Flagstaff Dark Skies Coalition

06/19/2026

06/19/2026

Arizona Department of Transportation leads the way with Flagstaff, installing what we think is the world's first amber LED lighting on an interstate highway system. This photo shows a crew replacing the very tall "high mast" lighting at the I40/I17 interchange (these fixtures are lowered to the ground for servicing). Kudos to the ADOT team!

06/14/2026

A great night of stargazing in Coconino Estates at Jim Cullen Memorial Park! Demonstrating dark skies in the heart of Flagstaff, a city of nearly eighty thousand residents!

For any savvy about dark sky measurements, we measured a zenith sky brightness of SQM 20.4, which corresponds to about Bortle Class 4.5. Less than 3/4 of a mile from City Hall.

Look up into the Universe!

06/14/2026

Sky is clear, Jupiter is here! Come to the neighborhood Star Party at Jim Cullen Memorial Park and meet the stars... it's just starting now!

Look up into the Universe!

06/11/2026

Jupiter and Venus are setting in our evening sky next to Gemini's Castor and Pollux these evenings... come join us Saturday evening 8pm for the neighborhood Star Party at Jim Cullen Park and see the real thing! (Weather permitting!🤞)

Look up into the Universe!

12/31/2025

🎉 2026 isn’t just another New Year. It’s the year of Flagstaff's Silver Jubilee—25 years since Flagstaff became the world’s first International Dark Sky City.

FDSC has ambitious plans for celebrating Flagstaff's Silver Jubilee in 2026 and for putting Flagstaff's success on the global stage.

Would you make a year-end gift to FDSC before you head out to welcome the New Year? Your gift—of any size—will help us continue to protect our star-filled skies here in northern Arizona and share this model with the rest of the world.

🫶 Donate here by midnight Arizona time (MST): https://flagstaffdarkskies.org/donate/