WeatherAPI Alerts API

openapi: 3.1.0
info:
  title: WeatherAPI.com Alerts API
  description: 'WeatherAPI.com provides real-time, forecast, historical, marine, future, astronomy, air quality, pollen, sports, IP lookup, timezone, and geolocation data via a JSON/XML REST API. Trusted by 850,000+ developers worldwide. Average response time ~200ms.


    ## Authentication

    All endpoints require an API key passed as the `key` query parameter.


    ## Base URL

    `https://api.weatherapi.com/v1`


    ## Location Query (`q` parameter)

    Accepts: city name, lat/lon decimal, US zip, UK postcode, Canada postal code, METAR code (`metar:EGLL`), IATA airport code (`iata:DXB`), IP lookup (`auto:ip`), IPv4/IPv6 address, or location ID (`id:2801268`).


    ## Plans

    - **Free**: 100K calls/month, 3-day forecast, 1-day history

    - **Starter**: $7/mo — 3M calls, 7-day forecast, 7-day history

    - **Pro+**: $25/mo — 5M calls, 300-day future, 365-day history

    - **Business**: $65/mo — 10M calls, evapotranspiration

    - **Enterprise**: Custom — 15-min interval, pollen history, wind@100m, SLA'
  version: 1.0.2
  contact:
    name: WeatherAPI.com Support
    url: https://www.weatherapi.com/contact.aspx
  license:
    name: Commercial / Non-Commercial
    url: https://www.weatherapi.com/terms.aspx
  x-logo:
    url: https://cdn.weatherapi.com/v4/images/weatherapi_logo.png
  x-last-validated: '2026-05-28'
  x-generated-from: provider-openapi
servers:
- url: https://api.weatherapi.com/v1
  description: Production (HTTPS)
- url: http://api.weatherapi.com/v1
  description: Production (HTTP)
security:
- ApiKeyAuth: []
tags:
- name: Alerts
  description: Government weather alerts
paths:
  /alerts.json:
    get:
      tags:
      - Alerts
      summary: WeatherAPI Weather Alerts
      description: Returns government weather alerts and warnings (USA, UK, Europe, rest of world) for a given location, if available.
      operationId: getAlerts
      parameters:
      - $ref: '#/components/parameters/key'
      - $ref: '#/components/parameters/q'
      responses:
        '200':
          description: Weather alerts
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/AlertsResponse'
              examples:
                GetAlerts200Example:
                  summary: Default getAlerts 200 response
                  x-microcks-default: true
                  value:
                    location:
                      name: London
                      region: City of London, Greater London
                      country: United Kingdom
                      lat: 51.5074
                      lon: -0.1278
                      tz_id: Europe/London
                      localtime_epoch: 1748441400
                      localtime: 2026-05-28 15:30
                    alerts:
                      alert:
                      - headline: sample value
                        msgtype: sample value
                        severity: sample value
                        urgency: sample value
                        areas: sample value
                        category: sample value
                        certainty: sample value
                        event: Severe Thunderstorm Warning
                        note: sample value
                        effective: '2026-05-28T13:00:00Z'
                        expires: '2026-05-28T13:00:00Z'
                        desc: Severe thunderstorms with damaging winds expected in the warning area.
                        instruction: sample value
        '400':
          $ref: '#/components/responses/BadRequest'
        '401':
          $ref: '#/components/responses/Unauthorized'
        '403':
          $ref: '#/components/responses/Forbidden'
      x-microcks-operation:
        delay: 0
        dispatcher: FALLBACK
components:
  parameters:
    q:
      name: q
      in: query
      required: true
      description: 'Location query. Accepts: city name, lat/lon, US zip, UK postcode, Canada postal code, METAR code (metar:EGLL), IATA (iata:DXB), auto:ip, IPv4/IPv6, or location ID (id:2801268).'
      schema:
        type: string
        example: London
    key:
      name: key
      in: query
      required: true
      description: Your WeatherAPI.com API key.
      schema:
        type: string
        example: YOUR_API_KEY
  responses:
    Forbidden:
      description: Forbidden — API key quota exceeded, disabled, or plan does not include this resource.
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/ErrorResponse'
    Unauthorized:
      description: Unauthorized — API key missing or invalid.
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/ErrorResponse'
    BadRequest:
      description: Bad request — invalid parameter or location not found.
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/ErrorResponse'
  schemas:
    Alert:
      type: object
      properties:
        headline:
          type: string
          example: sample value
        msgtype:
          type: string
          example: sample value
        severity:
          type: string
          example: sample value
        urgency:
          type: string
          example: sample value
        areas:
          type: string
          example: sample value
        category:
          type: string
          example: sample value
        certainty:
          type: string
          example: sample value
        event:
          type: string
          example: Severe Thunderstorm Warning
        note:
          type: string
          example: sample value
        effective:
          type: string
          example: '2026-05-28T13:00:00Z'
        expires:
          type: string
          example: '2026-05-28T13:00:00Z'
        desc:
          type: string
          example: Severe thunderstorms with damaging winds expected in the warning area.
        instruction:
          type: string
          example: sample value
    AlertsResponse:
      type: object
      properties:
        location:
          $ref: '#/components/schemas/Location'
        alerts:
          type: object
          properties:
            alert:
              type: array
              items:
                $ref: '#/components/schemas/Alert'
    ErrorResponse:
      type: object
      properties:
        error:
          type: object
          properties:
            code:
              type: integer
              description: WeatherAPI error code
            message:
              type: string
      example:
        error:
          code: 1006
          message: No location found matching parameter 'q'
    Location:
      type: object
      description: Location metadata returned with every weather response.
      properties:
        name:
          type: string
          description: Location name
          example: London
        region:
          type: string
          description: Region or state
          example: City of London, Greater London
        country:
          type: string
          description: Country name
          example: United Kingdom
        lat:
          type: number
          format: float
          description: Latitude
          example: 51.5074
        lon:
          type: number
          format: float
          description: Longitude
          example: -0.1278
        tz_id:
          type: string
          description: IANA timezone ID, e.g. Europe/London
          example: Europe/London
        localtime_epoch:
          type: integer
          description: Local time as Unix epoch
          example: 1748441400
        localtime:
          type: string
          description: Local date and time string
          example: 2026-05-28 15:30
  securitySchemes:
    ApiKeyAuth:
      type: apiKey
      in: query
      name: key
      description: API key obtained from https://www.weatherapi.com/my/. Pass as `?key=YOUR_API_KEY` query parameter.
externalDocs:
  description: Official WeatherAPI.com Documentation
  url: https://www.weatherapi.com/docs/