7Timer!

Overview

7Timer! provides weather forecasts optimized for astronomy — cloud cover, transparency, and seeing — keyless (verified live).

Quick Start

Civil forecast (verified live):

curl "https://www.7timer.info/bin/api.pl?lon=113.17&lat=23.09&product=civil&output=json"

{
  "product": "civil",
  "init": "2026082212",
  "dataseries": [
    { "timepoint": 3, "cloudcover": 2, "seeing": 5, "transparency": 4, "rh2m": 63, "wind10m": { "direction": "E", "speed": 2 }, "temp2m": 28 }
  ]
}

Astro products:

curl "https://www.7timer.info/bin/api.pl?lon=113.17&lat=23.09&product=astro&output=json"
curl "https://www.7timer.info/bin/api.pl?lon=113.17&lat=23.09&product=civillight&output=json"

Authentication

None — keyless.

Rate Limits & Notes

• Free; be polite — no hard published limit.
• Products: civil, civilLight, astro, astroLight, meteo.
• Fields include cloud cover, seeing, transparency, temperature, and wind.

FAQ

Is 7Timer free? Yes — free and keyless (verified).

What’s it for? Astronomy weather (cloud cover, seeing, transparency).

What products exist? civil, astro, meteo, and light variants.