Globe at Night | globeatnight.org
International citizen-science campaign to raise public awareness of the impact of light pollution by inviting citizen-scientists to measure their night sky brightness and submit their observations to a website from a computer or smart phone.
Clear Sky Chart | cleardarksky.com
Astronomers forecast showing at a glance when, in the next 48 hours, we might expect clear and dark skies for one specific observing site.
NASA Blue Marble Navigator | www.blue-marble.de
Satellite maps of Earth showing how bad light pollution is where you live and around the world.
Light Pollution Map| www.lightpollutionmap.info
Map of lighting on Earth with overlays using data from 2010, 2014, 2015, 2016 and user SQM data.
Needless | need-less.org.uk
Free simulations, animations and posters creating awareness about light pollution.