> ## Documentation Index > Fetch the complete documentation index at: https://docs.usecroma.com/llms.txt > Use this file to discover all available pages before exploring further. # SIATA Aburrá Valley Conditions > Live environmental conditions for the Aburrá Valley (Medellín metropolitan area) from SIATA: per-station weather (temperature, humidity, wind, pressure), rainfall (accumulated + intensity), and air quality (24h PM2.5 + ICA index). All inputs optional: an empty body returns every station; pass `latitude` + `longitude` (with optional `radius_km`, default 10) to get only nearby stations, nearest first with `distance_km` populated. Coverage is the Medellín metro area only. ## OpenAPI ````yaml /api-reference/openapi.json post /co/siata/v1 openapi: 3.1.0 info: title: Croma Marketplace API version: 1.0.0 description: >- Government-data APIs for Colombia, Peru, and global web search. Croma normalizes public-sector data into structured JSON for product teams and AI agents. servers: - url: https://api.croma.run security: [] paths: /co/siata/v1: post: tags: - Colombia - SIATA summary: SIATA Aburrá Valley Conditions description: >- Live environmental conditions for the Aburrá Valley (Medellín metropolitan area) from SIATA: per-station weather (temperature, humidity, wind, pressure), rainfall (accumulated + intensity), and air quality (24h PM2.5 + ICA index). All inputs optional: an empty body returns every station; pass `latitude` + `longitude` (with optional `radius_km`, default 10) to get only nearby stations, nearest first with `distance_km` populated. Coverage is the Medellín metro area only. operationId: siata_conditions requestBody: required: true content: application/json: schema: type: object required: [] properties: latitude: type: number minimum: -90 maximum: 90 description: >- Optional latitude. With `longitude`, returns only stations near that point. longitude: type: number minimum: -180 maximum: 180 description: >- Optional longitude. With `latitude`, returns only stations near that point. radius_km: type: number minimum: 1 maximum: 100 default: 10 description: >- Radius in km around `latitude`/`longitude` to include stations. Defaults to 10. additionalProperties: false example: latitude: 6.2442 longitude: -75.5812 radius_km: 5 responses: '200': description: Successful response headers: X-Request-Id: description: >- Unique id for the request (req_…). Include it in support reports. schema: type: string X-RateLimit-Limit: description: Requests allowed in the current window. schema: type: integer X-RateLimit-Remaining: description: Requests left before you are throttled. schema: type: integer X-RateLimit-Reset: description: ISO 8601 timestamp when the window resets. schema: type: string format: date-time X-Cache: description: HIT or MISS. Cached hits still count against your quota. schema: type: string enum: - HIT - MISS content: application/json: schema: $ref: '#/components/schemas/SiataConditionsResponse' '400': description: Invalid request body headers: X-Request-Id: description: >- Unique id for the request (req_…). Include it in support reports. schema: type: string content: application/json: schema: $ref: '#/components/schemas/ApiError' '401': description: Missing or invalid API key headers: X-Request-Id: description: >- Unique id for the request (req_…). Include it in support reports. schema: type: string content: application/json: schema: $ref: '#/components/schemas/ApiError' '429': description: Rate limit exceeded headers: X-Request-Id: description: >- Unique id for the request (req_…). Include it in support reports. schema: type: string X-RateLimit-Limit: description: Requests allowed in the current window. schema: type: integer X-RateLimit-Remaining: description: Requests left before you are throttled. schema: type: integer X-RateLimit-Reset: description: ISO 8601 timestamp when the window resets. schema: type: string format: date-time Retry-After: description: Seconds to wait before retrying. schema: type: integer content: application/json: schema: $ref: '#/components/schemas/ApiError' '500': description: Internal error headers: X-Request-Id: description: >- Unique id for the request (req_…). Include it in support reports. schema: type: string content: application/json: schema: $ref: '#/components/schemas/ApiError' '502': description: Upstream source returned an error headers: X-Request-Id: description: >- Unique id for the request (req_…). Include it in support reports. schema: type: string content: application/json: schema: $ref: '#/components/schemas/ApiError' security: - bearerAuth: [] externalDocs: description: Interactive documentation and examples url: https://usecroma.com/colombia/siata components: schemas: SiataConditionsResponse: type: object required: - data properties: data: type: object required: - meteorology - rain - air_quality properties: meteorology: type: array items: $ref: '#/components/schemas/SiataMeteorologyStation' rain: type: array items: $ref: '#/components/schemas/SiataRainStation' air_quality: type: array items: $ref: '#/components/schemas/SiataAirQualityStation' ApiError: type: object required: - error properties: error: type: object required: - type - code - message properties: type: type: string description: >- Broad category: invalid_request_error, authentication_error, not_found_error, rate_limit_error, upstream_error, api_error. code: type: string description: Machine-readable specific code. message: type: string description: Human-readable explanation, safe to surface in UI. param: type: string description: Field that triggered the error. Present on validation errors. details: type: object description: Free-form structured detail. SiataMeteorologyStation: type: object description: >- One weather station's current reading. Values are null when the station hasn't reported. required: - station - station_code - latitude - longitude - temperature_c - humidity_pct - wind_speed_ms - wind_direction_deg - wind_direction_cardinal - pressure_hpa - updated_at - distance_km properties: station: type: string station_code: type: - string - 'null' latitude: type: - number - 'null' longitude: type: - number - 'null' temperature_c: type: - number - 'null' description: Air temperature, °C. humidity_pct: type: - number - 'null' description: Relative humidity, %. wind_speed_ms: type: - number - 'null' description: Wind speed, m/s. wind_direction_deg: type: - number - 'null' description: Wind direction, degrees. wind_direction_cardinal: type: - string - 'null' description: Wind direction as a compass point (e.g. SSW). pressure_hpa: type: - number - 'null' description: Atmospheric pressure, hPa. updated_at: type: - string - 'null' description: Reading time, ISO 8601 UTC. distance_km: type: - number - 'null' description: >- Distance in km from the query point; null when no location filter was applied. SiataRainStation: type: object description: One rain-gauge station's current reading. required: - station - station_code - latitude - longitude - accumulated_mm - intensity_mm_h - updated_at - distance_km properties: station: type: string station_code: type: - string - 'null' latitude: type: - number - 'null' longitude: type: - number - 'null' accumulated_mm: type: - number - 'null' description: Accumulated rainfall, mm. intensity_mm_h: type: - number - 'null' description: Rain intensity, mm/h. updated_at: type: - string - 'null' description: Reading time, ISO 8601 UTC. distance_km: type: - number - 'null' description: >- Distance in km from the query point; null when no location filter was applied. SiataAirQualityStation: type: object description: One air-quality station's latest 24-hour average reading. required: - station - station_code - municipality - latitude - longitude - pm25 - air_quality_index - updated_at - distance_km properties: station: type: string station_code: type: - string - 'null' municipality: type: - string - 'null' latitude: type: - number - 'null' longitude: type: - number - 'null' pm25: type: - number - 'null' description: 24-hour average PM2.5 concentration, µg/m³. air_quality_index: type: - number - 'null' description: Colombia's air-quality index (ICA), 24-hour average. updated_at: type: - string - 'null' description: End of the 24-hour averaging window, ISO 8601 UTC. distance_km: type: - number - 'null' description: >- Distance in km from the query point; null when no location filter was applied. securitySchemes: bearerAuth: type: http scheme: bearer description: 'Use Authorization: Bearer YOUR_API_KEY' ````