Environment Canada GeoMet API

Base URL

https://api.weather.gc.ca

Authentication

No API key and no registration. Canadian federal government open data.

Rate limit

No published limit. Use `limit` and paging rather than requesting whole collections.

Pricing

Free under the Open Government Licence - Canada.

CORS

Enabled — callable directly from browser JavaScript

Official docs

Read the docs

Every request below was executed against the live API on 21 Aug 2026, and the response shown is the real body it returned — not an illustration.

curl 'https://api.weather.gc.ca/collections/climate-stations/items?limit=1&f=json'

const res = await fetch("https://api.weather.gc.ca/collections/climate-stations/items?limit=1&f=json");
if (!res.ok) throw new Error(`Request failed: ${res.status}`);
const data = await res.json();
console.log(data);

import requests

res = requests.get("https://api.weather.gc.ca/collections/climate-stations/items?limit=1&f=json", timeout=20)
res.raise_for_status()
print(res.json())

{
  "type": "FeatureCollection",
  "features": [
    {
      "type": "Feature",
      "properties": {
        "STN_ID": 2,
        "STATION_NAME": "CHEMAINUS BARE POINT",
        "PROV_STATE_TERR_CODE": "BC",
        "ENG_PROV_NAME": "BRITISH COLUMBIA",
        "FRE_PROV_NAME": "COLOMBIE-BRITANNIQUE",
        "COUNTRY": "CAN",
        "LATITUDE": 485500000,
        "LONGITUDE": -1234200000,
        "TIMEZONE": "PST",
        "ELEVATION": "3.00",
        "CLIMATE_IDENTIFIER": "101AE00",
        "TC_IDENTIFIER": null,
        "WMO_IDENTIFIER": null,
        "STATION_TYPE": "N/A",
        "NORMAL_CODE": "G",
        "PUBLICATION_CODE": 1,
        "DISPLAY_CODE": 9,
        "ENG_STN_OPERATOR_ACRONYM": null,
        "FRE_STN_OPERATOR_ACRONYM": null,
        "ENG_STN_OPERATOR_NAME": null,
        "FRE_STN_OPERATOR_NAME": null,
        "FIRST_DATE": "1979-01-01 00:00:00",
        "LAST_DATE": "1979-12-31 00:00:00",
        "HLY_FIRST_DATE": null,
        "HLY_LAST_DATE": null,
        "DLY_FIRST_DATE": "1979-11-01 00:00:00",
        "DLY_LAST_DATE": "1979-12-31 00:00:00",
        "MLY_FIRST_DATE": "1979-01-01 00:00:00",
        "MLY_LAST_DATE": "1979-12-01 00:00:00",
        "HAS_MONTHLY_SUMMARY": "Y",
        "HAS_NORMALS_DATA": "N",
        "HAS_HOURLY_DATA": "N"
      },
      "geometry": {
        "type": "Point",
        "coordinates": [
          -123.7,
          48.916666666666664
        ]
      },
      "id": "101AE00"
    }
  ],
  "numberMatched": 8615,
  "numberReturned": 1,
  "links": [
    {
      "type": "application/geo+json",
      "rel": "self",
      "title": "T

typestring

Always `FeatureCollection` — this is standard GeoJSON.

features[].geometryobject

Point geometry with properly formatted decimal coordinates. Use this for mapping, not the scaled properties.

features[].properties.STN_IDinteger

Internal station identifier.

features[].properties.STATION_NAMEstring

Station name, in uppercase.

features[].properties.LATITUDE / LONGITUDEinteger

Coordinates scaled by 10⁷ — `485500000` means 48.55 degrees. Divide, or use the geometry instead.

features[].properties.CLIMATE_IDENTIFIERstring

The key that links this station to the daily and hourly observation collections.

features[].properties.PROV_STATE_TERR_CODE / ENG_PROV_NAME / FRE_PROV_NAMEstring

Province code plus its English and French names.

features[].properties.ELEVATIONstring

Elevation in metres, serialised as a string.

features[].properties.TIMEZONEstring

Station timezone abbreviation such as `PST`.

features[].properties.TC_IDENTIFIER / WMO_IDENTIFIERstring

Transport Canada and World Meteorological Organization identifiers, often null.

features[].properties.NORMAL_CODE / STATION_TYPEstring

Whether climate normals are computed for the station, and its operational classification.

• Find Canadian climate stations within a bounding box
• Pull historical daily or hourly observations for a station
• Feed a GIS client that already speaks OGC API - Features
• Build a bilingual weather product using the paired English and French fields

If Environment Canada GeoMet does not fit, these weather apis cover similar ground. Every one was called before publishing, and each links to its own reference page with a working curl command and the response it returned.