Frequently asked questions
All questions
We use each city's weather to work out a sky quality score from 0 to 100. We combine how much cloud there is and how high it sits, the humidity, the visibility and the wind that evening, and from that we estimate how colorful the sunset will be.
Yes. Today's sunset forecast is free for everyone. With a free account you also see the next two days during your first week; after that, the free account keeps showing today. The Plus and Pro plans, which will see up to 7 and 14 days, will come later; nothing is charged today.
The score runs from 0 to 100. 90 to 100 is Spectacular, 70 to 89 is Excellent, 40 to 69 is Good, and below 40 is Fair. The higher it is, the more color to expect. The guide explains the score against the time, the forecast against the seasonal estimate, and how to use them.
Yes. You can see the time and quality of the sunrise the same way as the sunset, for any city.
The data is updated every hour with the latest weather, so the forecast gets better as sunset gets closer.
It is a forecast, not a certainty. It is most accurate for today and tomorrow and less so for days further out, because it depends on the weather forecast. Even so, it is a good way to decide whether it is worth heading out for the sunset.
No. It is an independent site and is not part of any official weather service. We use public weather data to estimate sky quality.
Yes. With an account you can turn on alerts, and we will let you know when a good sunset is expected in your city.
It works anywhere in the world: search for a city, a town or a neighborhood and you will see today's sunset time and quality. On top of that, 45 places have their own page in English, such as London and Sydney.