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Weather Underground API

Weather Underground API — free-tier JSON endpoint

🌦 WeatherON SCHEDULE
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.

—REACHABILITY SCORE ⓘ
▶ Run liveDocs ↗
Status badge · for your READMEshipapis health badge: — · unmonitored
ON PROBE SCHEDULE

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

Uptime historystarts after first probe

On our probe schedule. Uptime charts appear after the first check lands.

Example responsefrom provider docs — not verified by us
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 · 6On scheduleFULL DOCS ↗
On schedule — auth-wall reachability checks pending
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

Not tracked yet. Shape-change history starts once this API joins our probe schedule.

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?

Weather Underground API is catalogued but not yet on our probe schedule, so we don't publish a live status for it. Check the provider's own status page or docs for its current state.