# Tomorrow.io

**Canonical:** https://apis.io/providers/tomorrow/  
**Website:** https://www.tomorrow.io  
**APIs profiled:** 11

Tomorrow.io is a weather and climate intelligence platform exposing a unified v4 HTTP API. The API combines real-time observations, hyperlocal forecast timelines (minutely / hourly / daily), 20+ years of historical data, climate normals, weather-on-routes, configurable insights and event detection, per-location alerts with webhook delivery, and raster map tiles. 60+ data layers cover core weather, air quality, pollen, fire, flood, soil, solar, aviation, maritime, and lightning.

## Kin Score — 39.6 / 100 (developing)

Scored 2026-08-20 under rubric 0.12.0. Trend: flat (+0.0 from 39.6).

| Facet | Score |
|---|---|
| Discoverability | 81.5 |
| Contract Quality | 25.7 |
| Governance | 25.0 |
| Contract Governance | 25.0 |
| Operational Transparency | 50.0 |
| Developer Ergonomics | 14.3 |
| Commercial Clarity | 63.2 |
| Access Clarity | 63.2 |

## Agent readiness — 35.0 (agent-ready)

| Dimension | Value |
|---|---|
| Spec Presence | yes |
| Agentic Access | derived |
| Reversibility Documented | no |
| MCP Server | no |
| Auth Clarity | yes |
| Idempotency | no |
| Error Semantics | no |
| OpenAPI Examples | verified |
| Rate Limit Signal | documented |
| Event Surface Described | no |
| Agent Skills | no |
| Well Known Catalog | no |
| Consent Identity | no |
| Agent Card | no |
| Dry Run Mode | no |

## Access

Freemium · Self-serve signup — onboarding: self-serve, pricing: freemium, trial: no (confidence: high).

## APIs (11)

- **Tomorrow.io Alerts API** — Persistent alerts linked to one or more locations with webhook delivery.
- **Tomorrow.io Climate API** — 30-year climate normals for a location.
- **Tomorrow.io Events API** — Query events matching insights at a location or buffered geometry.
- **Tomorrow.io Forecast API** — Hourly and daily forecast timelines via a simple GET interface.
- **Tomorrow.io Historical API** — Historical weather data for a point or polygon, up to 20 years back.
- **Tomorrow.io Insights API** — Define threshold rules over weather fields to detect business-significant events.
- **Tomorrow.io Locations API** — CRUD over monitored point / polygon / polyline locations with tags.
- **Tomorrow.io Map Tiles API** — Raster tile endpoint for weather field overlays.
- **Tomorrow.io Realtime API** — Current-conditions snapshot for a single location.
- **Tomorrow.io Routes API** — Weather along a polyline / list of waypoints with arrival-time interpolation.
- **Tomorrow.io Timelines API** — Advanced multi-step (minutely / hourly / daily / current) forecast and historical timelines.

## Agentic access (1)

- **Tomorrow Agentic Access** — 32 operations · 20 acting

## Security (2)

- **Tomorrow Authentication** — apiKey · 1 scheme
- **Tomorrow Domain Security** — TLSv1.3 · HSTS · DMARC

## Plans (1)

- **Tomorrow Plans Pricing**

## Tags

Weather, Climate, Forecast, Historical Weather, Air Quality, Pollen, Fire, Flood, Routes, Map Tiles, Aviation, Maritime, Public APIs

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Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/providers/tomorrow/). Scores are computed from the provider's own public artifacts under a published rubric.