Pricing

from $0.50 / 1,000 observation records

METAR & NWS Weather Station Observations API

Raw METAR strings and decoded NWS ASOS hourly observations by ICAO station or lat/lon: temp, wind, ceiling, visibility, flight category. The official station data Kalshi weather markets settle on. No login, no API keys. From $0.50 per 1,000 records.

Pricing

from $0.50 / 1,000 observation records

Rating

0.0

(0)

Developer

Jack Sheward

Actor stats

Bookmarked

Total users

Monthly active users

a day ago

Last modified

Categories

Other

Travel

Developer tools

Station IDs (ICAO)

stationIds

Optional

Weather station ICAO codes, e.g. KORD, KJFK, KLAX. US ASOS stations have full support; international ICAO stations are served for lookbacks up to 72 hours.

Type:array

Default:

[
  "KORD"
]

Coordinates (optional)

latLon

Optional

Lat/lon points to resolve to the nearest observation station, e.g. [{"lat": 41.97, "lon": -87.9}]. Each resolves via the NWS station registry and is added to the station list.

Type:array

Default:

[]

Hours of history

hoursBack

Optional

How many hours of hourly observations to pull per station. Up to 72h is served from aviationweather.gov (freshest, sub-hour latency); 73-720h is served from the Iowa State Mesonet ASOS archive.

Type:integer

Minimum:1

Maximum:720

Default:24

Fields filter (optional)

fields

Optional

Subset of output fields to keep (station_id and utc_time always included). Leave empty for all fields.

Type:array

Default:

[]

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