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Weather Underground API

Weather Underground API — free-tier JSON endpoint

🌦 WeatherREACHABLEchecked 4h ago
AUTH APIKEYCORS ✓AGENT ✓HTTPS ✓COMMERCIAL ?

Weather Underground API offers a free API tier. We verified JSON on a sample GET (Weather). Check provider docs for key requirements and limits.

100REACHABILITY SCORE ⓘ
▶ Run liveDocs ↗
Status badge · for your READMEshipapis health badge: — · healthy
CHECK TIER · REACHABILITY

We probe without your API key. A 401/403 auth wall means the server is up — not a full health pass.

Uptime history
100%90d reachable
100%30d reachable
4hLast check · since JUL 8 · server OK
operationalpartialdownno data
Live response samplecaptured by our last successful check
GET https://api.weather.com/v3/wx/forecast/daily/5day?apiKey=YOUR_API_KEY&geocode=0%2C0&units=e&language=en-US&format=json

{
  "calendarDayTemperatureMax": [
    74,
    73
  ],
  "calendarDayTemperatureMin": [
    71,
    71
  ],
  "dayOfWeek": [
    "Sunday",
    "Monday"
  ],
  "expirationTimeUtc": [
    1783284301,
    1783284301
  ],
  "moonPhase": [
    "Waning Gibbous",
    "Waning Gibbous"
  ],
  "moonPhaseCode": [
    "WNG",
    "WNG"
  ],
  "moonPhaseDay": [
    20,
    21
  ],
  "moonriseTimeLocal": [
    "2026-07-05T22:28:37+0000",
    "2026-07-06T23:12:27+0000"
  ]
}
Call itcurl · fetch · python
curl "https://api.weather.com/v3/wx/forecast/daily/5day?apiKey=YOUR_API_KEY&geocode=0%2C0&units=e&language=en-US&format=json"
const res = await fetch("https://api.weather.com/v3/wx/forecast/daily/5day?apiKey=YOUR_API_KEY&geocode=0%2C0&units=e&language=en-US&format=json");
const data = await res.json();
console.log(data);
import requests

res = requests.get("https://api.weather.com/v3/wx/forecast/daily/5day?apiKey=YOUR_API_KEY&geocode=0%2C0&units=e&language=en-US&format=json")
print(res.json())
Endpoints · 6ReachableFULL DOCS ↗
Auth wall reachable — GET /v3/wx/forecast/daily/5day?apiKey=YOUR_API_KEY&geocode=0%2C0&units=e&language=en-US&format=json (key stripped)104 mschecked 4h ago
GET/v3/wx/forecast/daily/5day?apiKey=YOUR_API_KEY&geocode=0%2C0&units=e&language=en-US&format=jsonPROBED

Weather Underground API — free-tier JSON endpoint

GET/v3

V3 — documented GET route.

GET/v3/1

V3 details by ID (example: 1).

GET/v3?limit=10

V3 — documented GET route.

GET/v3/search?q=test

Search by query parameters.

GET/v3/

V3 — documented GET route.

Machine-readable spec

We probe without your API key. A 401/403 auth wall means the server is up — not a full health pass. Export includes every documented route below.

Response-shape history

Stable. No schema drift observed since monitoring began — the response shape has not changed under our checks.

Weather Underground API: common questions

Is Weather Underground API free to use?

Yes — Weather Underground API is a free weather API. Free tier: Free tier — API key may be required for production. Whether the free tier allows commercial use is unclear — check the provider docs.

Does Weather Underground API need an API key?

Yes — Weather Underground API needs a free API key, which you pass on each request. Rate limits: Unpublished.

Can I call Weather Underground API from the browser?

Yes — Weather Underground API returns CORS headers over HTTPS, so front-end code can fetch it directly with no backend proxy. Use the fetch snippet on this page, or hit "Run live" to try it now.

Is Weather Underground API up right now?

As of our last scheduled check, Weather Underground API is healthy with 100% uptime over 90 days and a 104 ms median response. We re-probe it every sweep — the status badge and uptime chart above always show the latest.