Mon, Jan 4
Quadrantids meteor shower 2027 from Thornton, CO
Best 1:59 AM–5:59 AM (radiant up to 63°).
Up to about 110 meteors an hour under a perfectly dark sky. The Moon is 13% lit on the peak night.
in 63 days 13 h
Times are local (MST).
One notification in the late afternoon, only on nights with something worth going out for over Thornton, CO: a very bright ISS pass, a Starlink train, a meteor shower peak, planets together, a supermoon or eclipse, the northern lights, or a bright comet. Only the city is stored, not your location.
Put Thornton, CO's sky in your calendar
Full moons, meteor showers, eclipses and bright ISS passes (with a 10-minute reminder) appear in your calendar and update by themselves.
Plan your night
☁️ Clouds through the night
The hour-by-hour cloud forecast appears about five days before.
🌑 Find a dark sky
City light hides most of the show. Drive until the sky looks clearly darker (often 30–60 minutes out), away from streetlights, with an open view.
🛰️ Also crossing the sky that night
Bright ISS and Starlink passes during the best hours appear about five days before.
Shooting stars streak across the sky: up to about 110 an hour from a dark place.
How to watch
- Find a dark place away from city lights and give your eyes 20 minutes to adjust.
- Lie back and look at a wide part of the sky; you do not need to face the radiant.
- Rates are highest in the hours before dawn.
Other cities
- Westminster, COBest 2:00 AM–6:00 AM (radiant up to 63°)
- DenverBest 1:59 AM–5:59 AM (radiant up to 63°)
- Aurora, ColoradoBest 1:59 AM–5:59 AM (radiant up to 63°)
- Arvada, COBest 2:00 AM–6:00 AM (radiant up to 63°)
- Boulder, COBest 2:01 AM–6:01 AM (radiant up to 63°)
- Centennial, COBest 1:59 AM–5:59 AM (radiant up to 63°)
- Greeley, COBest 1:59 AM–6:14 AM (radiant up to 66°)
- Fort Collins, COBest 2:00 AM–6:15 AM (radiant up to 66°)
- Colorado SpringsBest 2:14 AM–5:59 AM (radiant up to 62°)
- Pueblo, COBest 2:13 AM–5:58 AM (radiant up to 62°)
Calculated with Astronomy Engine (MIT license).