Current Lightest Skies
30
Current score
Rio de Janeiro
Brazil
Current Darkest Skies
78
Current score
Sydney
Australia
Top 5 Lightest Cities
View All Lightest Cities
What is light pollution?
Light pollution is excessive artificial light at night from street lamps, buildings, and vehicles. It brightens the night sky and makes faint stars harder to see.
Sky darkness scores combine satellite-based sky brightness with local moon and weather conditions to estimate current stargazing conditions.
Last updated: 20 Sep 14:58
