Free Tonight score for any location: cloud, dew, transparency, and Go / Maybe / Skip, so you know if tonight is worth the drive.
Frequently asked questions
Is tonight good for stargazing?
Use the Tonight score: 70+ is Go, 45–69 Maybe, under 45 Skip. It weighs cloud cover, dew risk, transparency, and whether you have astronomical dark. Open Stargazing Weather for hourly detail.
How is the Tonight score calculated?
It scores forecast cloud, dew risk, aerosol transparency, astronomical-dark hours, nearby clear windows, and rain risk. It is weather-first, distinct from moon/Bortle scores on Sky Events.
Does this work outside Guyana?
Yes. Set any latitude and longitude. Guyana is the default demo because humid tropical nights need dew-aware scoring that still works worldwide.