Xweather

Xweather, a Vaisala company, provides weather data APIs delivering science-backed, hyper-local weather intelligence for operational applications. The Xweather Weather API exposes current conditions, forecasts, severe weather alerts, lightning data, air quality, observations, wildfire information, tropical cyclone tracks, and maritime weather through a single REST API. Authentication uses a client_id and client_secret passed as query parameters or HTTP headers.

Xweather publishes 9 API contracts indexed on the APIs.io network, including Air Quality API, Alerts API, Conditions API, and 6 more. Tagged areas include Air Quality, Company, Data, Forecast, and Lightning.

The Xweather catalog on APIs.io includes 1 JSON-LD context and 2 Spectral governance rulesets.

Xweather’s developer surface includes engineering blog, authentication, documentation, API reference, signup flow, pricing, code examples, and 28 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

41.7/100 developing ▬ flat Agent 28/100 agent aware Front door AI 4/6 moderate saas Full breakdown ↓
scored 2026-10-23 · rubric v0.25.0 · Show this score on your site →

AccessFreemiumSelf serve⚡ Free to try

1 published contract 9 Features 7 Use Cases

Air Quality Company Data Forecast Lightning Maritime Observations Severe Weather Weather Climate Satellite Mapping REST

Kin Score

Kin Score How this is scored →
scored 2026-10-23 · rubric v0.25.0

Composite quality — 41.7/100 · developing

Contract Quality 13.0 / 21

Developer Ergonomics 7.3 / 17

Access Clarity 5.4 / 17

Operational Transparency 1.2 / 11

Contract Governance 2.8 / 10

Discoverability 5.6 / 9

Regulatory Posture 2.5 / 15

Agent readiness — 28/100 · agent aware

Machine-Readable Contract 18 / 18

Agentic Access Contract 10 / 10

Documented Reversibility 6 / 6

MCP Server 0 / 12

Machine-Readable Auth 10 / 10

Idempotency 9 / 9

Stable Error Semantics 0 / 8

Request/Response Examples 7 / 7

Rate-Limit Signaling 7 / 7

Typed Event Surface 0 / 6

Agent Skills 0 / 5

Well-Known Catalog 0 / 4

Consent & Bot Identity 0 / 3

A2A Agent Card 0 / 8

Dry-Run / Simulate Mode 4 / 4

Delegated User Identity 0 / 6

Protected Resource Metadata 0 / 5

Registration Without a Human 0 / 6

Agentic Commerce Well-Known Document 0 / 5

Pagination 5 / 5

Distinct Operations 3 / 3

Regulatory Posture applies to this provider. Its tags matched the Horizontal (data, software, accessibility, platform) regime, so Regulatory Posture carries 15 points of the composite. If this regime is wrong for your business, say so on your provider repo — the applicability map is public and we will correct it.

Create-or-Update Ergonomics does not apply to this provider. The published contracts declare no write operations, and a read-only API cannot create-or-update. The facet is excluded from this provider's denominator entirely — not scored zero. A reference or data API is not deficient for being unable to upsert.

The six quality facets above are damped to 85 points between them, because the conditional facet above carries the other 15. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 85% of its nominal weight, not 100%. The full arithmetic is at apis.io/rating/.

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<a href="https://apis.io/providers/xweather/"><img src="https://apis.io/badge/xweather/card.svg" alt="Xweather on APIs.io — Kin Score by API Evangelist"></a>

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Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. Every facet and dimension name above is a link: it opens that measurement's own page — what it means, the exact checks that feed it, how the whole catalog distributes on it, and the providers at the top of it. This rating is computed from github.com/api-evangelist/xweather: open an issue to ask a question, or submit a pull request to add artifacts. Submit an artifact on GitHub — free → Manage your own listing — the Influence plan, $499/mo →

Markets this provider is in provisional

The Kin Score Market layer reads a provider inside its market: its position, and how deep its integrations go. Depth is only comparable within a position. Provisional and unweighted: not part of the Kin Score or agent readiness.

Market	Position	Depth	Registered MCP server	Declares compatibility
Weather and Climate Data	undeclared	-	1	-

Registered MCP server and declares compatibility are report only — not weighted. Undeclared means we found nothing we can read, so there is no number: we never infer integrations.

Standards implemented 1

Standards this provider implements or carries. De facto ones are profiled and measured by the API Commons; formal ones come from the standards directory and are linked by the provider's own tags. The evidence column says how each claim was established — not that it was made.

REST

tagged — the provider's own APIs.json carries the standard as a tag; implementation not verified

APIs 9

Individual APIs this provider publishes, each with its own machine-readable definition.

Xweather Air Quality API

Air quality index and pollutant data

Xweather Alerts API

Severe weather alerts and warnings

Xweather Conditions API

Current and historical weather conditions

Xweather Fires API

Wildfire data

Xweather Forecasts API

Weather forecasts

Xweather Lightning API

Lightning strike data and nowcasts

Xweather Maritime API

Marine and ocean weather data

Xweather Observations API

Weather station observations

Xweather Tropical API

Tropical cyclone and hurricane data

Pricing Plans 1

Published pricing tiers and plan structures.

Xweather Plans Pricing

3 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Xweather Rate Limits

5 limits

RATE LIMITS

FinOps 1

Cost, billing, and metering signals for API financial operations.

Xweather Finops

FINOPS

Features 9

Notable capabilities this provider offers.

Real-Time Conditions

Current surface weather observations for any location worldwide.

Hourly and Daily Forecasts

Forecast records out to 15 days with hourly and daily granularity.

Severe Weather Alerts

Government-issued alerts, watches, and warnings with severity, urgency, and certainty.

Global Lightning Network

Cloud-to-ground and in-cloud lightning strike data from Vaisala's global detection network.

Lightning Threat Nowcast

Probabilistic short-term lightning threat used to drive stop-work and all-clear automation.

Air Quality

AQI values, primary pollutant, and detailed pollutant breakdowns for monitoring and reporting.

Maritime Weather

Marine weather including waves, swell, sea-surface temperature, and sea state.

Wildfire Data

Active wildfire incident records and perimeters for situational awareness.

Tropical Cyclones

Active tropical cyclone tracks, intensity, and forecast cones.

Scroll for all 9

Semantic Vocabularies 1

JSON-LD contexts and semantic vocabularies used across these APIs.

Xweather Context

0 classes · 66 properties

JSON-LD

Spectral Rules 2

Spectral governance rulesets for linting and validating these APIs.

Xweather — jsonschema rules

5 rules · 3 warnings 2 info

SPECTRAL

Xweather API Rules

11 rules · 4 errors 6 warnings

SPECTRAL

0 properties

JSON SCHEMA

TropicalCyclonesResponse

0 properties

JSON SCHEMA

Scroll for all 17

JSON Structure 1

JSON Structure definitions describing this provider's data shapes.

Xweather Weather Api Structure

3 properties

JSON STRUCTURE

3 fields

EXAMPLE

Xweather List Tropical Cyclones Example

3 fields

EXAMPLE

Scroll for all 7

Security Posture 2

Authentication, domain security, vulnerability disclosure, and trust-center signals.

Xweather Authentication

apiKey · 1 scheme

SECURITY

Xweather Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Agentic Access 1

Recommended x-agentic-access execution contracts for AI agents.

Xweather Agentic Access

10 operations

10 operations · 0 acting

AGENTIC

Use Cases 7

What developers build with this provider.

Construction Lightning Safety

Automatically pause and resume outdoor construction work using lightning threat nowcasts.

Aviation Ground Operations

Drive ramp closures and re-openings around lightning, severe weather, and visibility thresholds.

Outdoor Sports and Events

Manage stadium and event evacuations and re-entries based on lightning and severe weather.

Energy and Utilities

Plan grid operations, crew dispatch, and storm restoration around forecasts and alerts.

Logistics and Routing

Optimize routing and dispatch decisions using maritime, road weather, and severe weather feeds.

Insurance and Risk

Use historical and real-time storm and lightning data for claims and underwriting.

Environmental Reporting

Aggregate AQI and pollutant feeds for ESG and regulatory reporting.

Scroll for all 7

Integrations 4

Pre-built integrations with other platforms and tools.

AerisWeather Mapping

Tile and overlay services for visualizing Xweather data on web and mobile maps.

Vaisala Lightning Network

Underlying global lightning detection infrastructure feeding the Xweather lightning APIs.

Common Alerting Protocol

Severe-weather alert payloads align with CAP severity, urgency, and certainty fields.

METAR

Surface observations are derived from the international METAR observation standard.

Resources

Get Started 1

Portal, sign-up, and the first successful call

Signup

Signup

Documentation 9

Reference material describing how the API behaves

Documentation

APIReference

OpenAPI

JSONSchema

JSONSchema

JSONSchema

JSONSchema

JSONSchema

JSONSchema

Scroll for all 9

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess

AgenticAccess

Design & Contract 4

Pagination, idempotency, versioning, errors, and events

JSONStructure

JSONLDContext

Vocabulary

SpectralRules

Build 8

SDKs, sample code, and the tooling you integrate with

GitHubOrganization

Examples

Examples

Examples

Examples

Examples

Examples

Examples

Scroll for all 8

Access & Security 3

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Authentication

Authentication

Authentication

Authentication

Operate 1

Status, limits, changes, and where to get help

RateLimits

RateLimits

Commercial 3

Pricing, plans, and the legal terms of use

Plans

Plans

FinOps

FinOps

Pricing

Pricing

Company 5

The organization behind the API

Blog

Blog

BlogRSS

BlogRSS

LinkedIn

Website

Website

Blog

Blog

Source (apis.yml)

aid: xweather
name: Xweather
description: Xweather, a Vaisala company, provides weather data APIs delivering science-backed, hyper-local weather intelligence
  for operational applications. The Xweather Weather API exposes current conditions, forecasts, severe weather alerts, lightning
  data, air quality, observations, wildfire information, tropical cyclone tracks, and maritime weather through a single REST
  API. Authentication uses a client_id and client_secret passed as query parameters or HTTP headers.
type: Index
deliveryModel:
  model: saas
  open_source: false
  commercial: true
  callable_host: true
  label: Hosted service · you call their endpoint
  confidence: high
  source:
  - openapi
  - pricing
  generated: '2026-08-28'
  method: derived
accessModel:
  pricing: freemium
  onboarding: self-serve
  trial: false
  try_now: true
  public: false
  label: Freemium · Self-serve signup
  confidence: medium
  source:
  - plans
  - authentication
  - security
  generated: '2026-09-03'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/xweather.png
access: 3rd-Party
position: Consuming
url: https://raw.githubusercontent.com/api-evangelist/xweather/refs/heads/main/apis.yml
tags:
- Air Quality
- Company
- Data
- Forecast
- Lightning
- Maritime
- Observations
- Severe Weather
- Weather
- Climate
- Satellite
- Mapping
- REST
tags_raw:
- Air Quality
- Company
- Data
- Forecasts
- Lightning
- Maritime
- Observations
- Severe Weather
- Weather
- Climate
- Satellite
- Mapping
- REST
created: '2024-11-08'
modified: '2026-10-06'
specificationVersion: '0.23'
apis:
- aid: xweather:xweather-air-quality-api
  name: Xweather Air Quality API
  description: Air quality index and pollutant data
  humanURL: https://www.xweather.com/docs/weather-api
  baseURL: https://data.api.xweather.com
  tags:
  - Air Quality
  properties:
  - type: OpenAPI
    url: openapi/xweather-air-quality-api-openapi.yml
  - type: Documentation
    url: https://www.xweather.com/docs/weather-api
  - type: GettingStarted
    url: https://www.xweather.com/docs/weather-api/getting-started/authentication
  - type: APIReference
    url: https://www.xweather.com/docs/weather-api/endpoints
- aid: xweather:xweather-alerts-api
  name: Xweather Alerts API
  description: Severe weather alerts and warnings
  humanURL: https://www.xweather.com/docs/weather-api
  baseURL: https://data.api.xweather.com
  tags:
  - Alerts
  properties:
  - type: OpenAPI
    url: openapi/xweather-alerts-api-openapi.yml
  - type: Documentation
    url: https://www.xweather.com/docs/weather-api
  - type: GettingStarted
    url: https://www.xweather.com/docs/weather-api/getting-started/authentication
  - type: APIReference
    url: https://www.xweather.com/docs/weather-api/endpoints
- aid: xweather:xweather-conditions-api
  name: Xweather Conditions API
  description: Current and historical weather conditions
  humanURL: https://www.xweather.com/docs/weather-api
  baseURL: https://data.api.xweather.com
  tags:
  - Conditions
  properties:
  - type: OpenAPI
    url: openapi/xweather-conditions-api-openapi.yml
  - type: Documentation
    url: https://www.xweather.com/docs/weather-api
  - type: GettingStarted
    url: https://www.xweather.com/docs/weather-api/getting-started/authentication
  - type: APIReference
    url: https://www.xweather.com/docs/weather-api/endpoints
- aid: xweather:xweather-fires-api
  name: Xweather Fires API
  description: Wildfire data
  humanURL: https://www.xweather.com/docs/weather-api
  baseURL: https://data.api.xweather.com
  tags:
  - Fires
  properties:
  - type: OpenAPI
    url: openapi/xweather-fires-api-openapi.yml
  - type: Documentation
    url: https://www.xweather.com/docs/weather-api
  - type: GettingStarted
    url: https://www.xweather.com/docs/weather-api/getting-started/authentication
  - type: APIReference
    url: https://www.xweather.com/docs/weather-api/endpoints
- aid: xweather:xweather-forecasts-api
  name: Xweather Forecasts API
  description: Weather forecasts
  humanURL: https://www.xweather.com/docs/weather-api
  baseURL: https://data.api.xweather.com
  tags:
  - Forecast
  tags_raw:
  - Forecasts
  properties:
  - type: OpenAPI
    url: openapi/xweather-forecasts-api-openapi.yml
  - type: Documentation
    url: https://www.xweather.com/docs/weather-api
  - type: GettingStarted
    url: https://www.xweather.com/docs/weather-api/getting-started/authentication
  - type: APIReference
    url: https://www.xweather.com/docs/weather-api/endpoints
- aid: xweather:xweather-lightning-api
  name: Xweather Lightning API
  description: Lightning strike data and nowcasts
  humanURL: https://www.xweather.com/docs/weather-api
  baseURL: https://data.api.xweather.com
  tags:
  - Lightning
  properties:
  - type: OpenAPI
    url: openapi/xweather-lightning-api-openapi.yml
  - type: Documentation
    url: https://www.xweather.com/docs/weather-api
  - type: GettingStarted
    url: https://www.xweather.com/docs/weather-api/getting-started/authentication
  - type: APIReference
    url: https://www.xweather.com/docs/weather-api/endpoints
- aid: xweather:xweather-maritime-api
  name: Xweather Maritime API
  description: Marine and ocean weather data
  humanURL: https://www.xweather.com/docs/weather-api
  baseURL: https://data.api.xweather.com
  tags:
  - Maritime
  properties:
  - type: OpenAPI
    url: openapi/xweather-maritime-api-openapi.yml
  - type: Documentation
    url: https://www.xweather.com/docs/weather-api
  - type: GettingStarted
    url: https://www.xweather.com/docs/weather-api/getting-started/authentication
  - type: APIReference
    url: https://www.xweather.com/docs/weather-api/endpoints
- aid: xweather:xweather-observations-api
  name: Xweather Observations API
  description: Weather station observations
  humanURL: https://www.xweather.com/docs/weather-api
  baseURL: https://data.api.xweather.com
  tags:
  - Observations
  properties:
  - type: OpenAPI
    url: openapi/xweather-observations-api-openapi.yml
  - type: Documentation
    url: https://www.xweather.com/docs/weather-api
  - type: GettingStarted
    url: https://www.xweather.com/docs/weather-api/getting-started/authentication
  - type: APIReference
    url: https://www.xweather.com/docs/weather-api/endpoints
- aid: xweather:xweather-tropical-api
  name: Xweather Tropical API
  description: Tropical cyclone and hurricane data
  humanURL: https://www.xweather.com/docs/weather-api
  baseURL: https://data.api.xweather.com
  tags:
  - Tropical
  properties:
  - type: OpenAPI
    url: openapi/xweather-tropical-api-openapi.yml
  - type: Documentation
    url: https://www.xweather.com/docs/weather-api
  - type: GettingStarted
    url: https://www.xweather.com/docs/weather-api/getting-started/authentication
  - type: APIReference
    url: https://www.xweather.com/docs/weather-api/endpoints
common:
- type: Plans
  url: plans/xweather-plans-pricing.yml
- type: RateLimits
  url: rate-limits/xweather-rate-limits.yml
- type: FinOps
  url: finops/xweather-finops.yml
- url: https://www.xweather.com/blog/category/news
  type: Blog
- url: https://www.xweather.com/feed.xml
  type: BlogRSS
- type: AgenticAccess
  url: agentic-access/xweather-agentic-access.yml
- type: DomainSecurity
  url: security/xweather-domain-security.yml
- type: Authentication
  url: authentication/xweather-authentication.yml
- type: GitHubOrganization
  url: https://github.com/vaisala-xweather
- type: LinkedIn
  url: https://www.linkedin.com/company/xweather
- type: Website
  url: https://xweather.com
- type: Documentation
  url: https://www.xweather.com/docs/weather-api
- type: APIReference
  url: https://www.xweather.com/docs/weather-api/endpoints
- type: Authentication
  url: https://www.xweather.com/docs/weather-api/getting-started/authentication
- type: Signup
  url: https://www.xweather.com/
- type: Pricing
  url: https://www.xweather.com/weather-api
- type: OpenAPI
  url: https://raw.githubusercontent.com/api-evangelist/xweather/refs/heads/main/openapi/xweather-weather-api-openapi.yml
- type: JSONSchema
  url: https://raw.githubusercontent.com/api-evangelist/xweather/refs/heads/main/json-schema/xweather-location-schema.json
- type: JSONSchema
  url: https://raw.githubusercontent.com/api-evangelist/xweather/refs/heads/main/json-schema/xweather-conditions-observation-schema.json
- type: JSONSchema
  url: https://raw.githubusercontent.com/api-evangelist/xweather/refs/heads/main/json-schema/xweather-forecast-period-schema.json
- type: JSONSchema
  url: https://raw.githubusercontent.com/api-evangelist/xweather/refs/heads/main/json-schema/xweather-alert-schema.json
- type: JSONSchema
  url: https://raw.githubusercontent.com/api-evangelist/xweather/refs/heads/main/json-schema/xweather-lightning-strike-schema.json
- type: JSONSchema
  url: https://raw.githubusercontent.com/api-evangelist/xweather/refs/heads/main/json-schema/xweather-air-quality-observation-schema.json
- type: JSONStructure
  url: https://raw.githubusercontent.com/api-evangelist/xweather/refs/heads/main/json-structure/xweather-weather-api-structure.json
- type: JSONLDContext
  url: https://raw.githubusercontent.com/api-evangelist/xweather/refs/heads/main/json-ld/xweather-context.jsonld
- type: Vocabulary
  url: https://raw.githubusercontent.com/api-evangelist/xweather/refs/heads/main/vocabulary/xweather-vocabulary.yml
- type: SpectralRules
  url: https://raw.githubusercontent.com/api-evangelist/xweather/refs/heads/main/rules/xweather-rules.yml
- type: Examples
  url: https://raw.githubusercontent.com/api-evangelist/xweather/refs/heads/main/examples/xweather-get-conditions-example.json
- type: Examples
  url: https://raw.githubusercontent.com/api-evangelist/xweather/refs/heads/main/examples/xweather-get-forecasts-example.json
- type: Examples
  url: https://raw.githubusercontent.com/api-evangelist/xweather/refs/heads/main/examples/xweather-get-alerts-example.json
- type: Examples
  url: https://raw.githubusercontent.com/api-evangelist/xweather/refs/heads/main/examples/xweather-get-lightning-example.json
- type: Examples
  url: https://raw.githubusercontent.com/api-evangelist/xweather/refs/heads/main/examples/xweather-get-air-quality-example.json
- type: Examples
  url: https://raw.githubusercontent.com/api-evangelist/xweather/refs/heads/main/examples/xweather-list-tropical-cyclones-example.json
- type: Examples
  url: https://raw.githubusercontent.com/api-evangelist/xweather/refs/heads/main/examples/xweather-get-maritime-example.json
- type: Features
  data:
  - name: Real-Time Conditions
    description: Current surface weather observations for any location worldwide.
  - name: Hourly and Daily Forecasts
    description: Forecast records out to 15 days with hourly and daily granularity.
  - name: Severe Weather Alerts
    description: Government-issued alerts, watches, and warnings with severity, urgency, and certainty.
  - name: Global Lightning Network
    description: Cloud-to-ground and in-cloud lightning strike data from Vaisala's global detection network.
  - name: Lightning Threat Nowcast
    description: Probabilistic short-term lightning threat used to drive stop-work and all-clear automation.
  - name: Air Quality
    description: AQI values, primary pollutant, and detailed pollutant breakdowns for monitoring and reporting.
  - name: Maritime Weather
    description: Marine weather including waves, swell, sea-surface temperature, and sea state.
  - name: Wildfire Data
    description: Active wildfire incident records and perimeters for situational awareness.
  - name: Tropical Cyclones
    description: Active tropical cyclone tracks, intensity, and forecast cones.
- type: UseCases
  data:
  - name: Construction Lightning Safety
    description: Automatically pause and resume outdoor construction work using lightning threat nowcasts.
  - name: Aviation Ground Operations
    description: Drive ramp closures and re-openings around lightning, severe weather, and visibility thresholds.
  - name: Outdoor Sports and Events
    description: Manage stadium and event evacuations and re-entries based on lightning and severe weather.
  - name: Energy and Utilities
    description: Plan grid operations, crew dispatch, and storm restoration around forecasts and alerts.
  - name: Logistics and Routing
    description: Optimize routing and dispatch decisions using maritime, road weather, and severe weather feeds.
  - name: Insurance and Risk
    description: Use historical and real-time storm and lightning data for claims and underwriting.
  - name: Environmental Reporting
    description: Aggregate AQI and pollutant feeds for ESG and regulatory reporting.
- type: Integrations
  data:
  - name: AerisWeather Mapping
    description: Tile and overlay services for visualizing Xweather data on web and mobile maps.
  - name: Vaisala Lightning Network
    description: Underlying global lightning detection infrastructure feeding the Xweather lightning APIs.
  - name: Common Alerting Protocol
    description: Severe-weather alert payloads align with CAP severity, urgency, and certainty fields.
  - name: METAR
    description: Surface observations are derived from the international METAR observation standard.
- type: Blog
  url: https://www.xweather.com/blog
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com

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