Current Phase
Waxing Crescent
Rise & Set Times
Upcoming Phases
Moon Calendar — May 2026
Upcoming Lunar Eclipses
Moon in Boulder Today
The moon over Boulder is currently a Waxing Crescent with 7.3% illumination, on day 2.31 of the 29.53-day lunar cycle. The moon's altitude is +14.5° and azimuth is 293.7°, at a distance of 360,351 km from Earth.
Moonrise is at 6:54 AM and moonset at 11:07 PM. Sunrise is at 5:43 AM and sunset at 8:12 PM. The next major phase is the First Quarter on May 23, 2026 at 5:12 AM MDT.
Current sky conditions in Boulder are Rain with 80% cloud cover, 16 km visibility, and 100% humidity. The temperature is 3°C (37°F).
At just +14.5° above the horizon, the moon appears slightly warm as its light passes through about 3.2 times the normal thickness of Earth's atmosphere — the same Rayleigh scattering effect that makes sunsets red. Moon viewing conditions are currently Good.
Upcoming Phases — Boulder
| Phase | Date & Time |
|---|---|
| 🌓 First Quarter | May 23, 2026 at 5:12 AM MDT |
| 🌕 Full Moon | May 31, 2026 at 2:46 AM MDT |
| 🌗 Last Quarter | Jun 8, 2026 at 4:01 AM MDT |
| 🌑 New Moon | Jun 14, 2026 at 8:55 PM MDT |
| 🌓 First Quarter | Jun 21, 2026 at 3:55 PM MDT |
| 🌕 Full Moon | Jun 29, 2026 at 5:57 PM MDT |
| 🌗 Last Quarter | Jul 7, 2026 at 1:29 PM MDT |
| 🌑 New Moon | Jul 14, 2026 at 3:43 AM MDT |
| 🌓 First Quarter | Jul 21, 2026 at 5:06 AM MDT |
| 🌕 Full Moon | Jul 29, 2026 at 8:36 AM MDT |
| 🌗 Last Quarter | Aug 5, 2026 at 8:22 PM MDT |
| 🌑 New Moon | Aug 12, 2026 at 11:37 AM MDT |