Current Local Time in Boulder, Colorado, USA

6:07:57 am MST

Wednesday, January 21, 2026

Country:	United States
State:	Colorado (CO)
Lat/Long:	40°01'N / 105°16'W
Elevation:	1623 m
Currency:	United States Dollar (USD)
Languages:	English
Country Code:	+1

°F

Weather

41 °F

Clear.
49 / 22 °F

Thu 22.		37 / 19 °F
Fri 23.		24 / 11 °F

More weather details

Time Zone

MST (Mountain Standard Time)
UTC/GMT -7 hours

DST starts

Mar 8, 2026
Forward 1 hour

DST ends

Nov 1, 2026
Back 1 hour

Difference

2 hours behind
Columbus

About MST — Mountain Standard Time

Set your location

Sunrise

7:17 am
↑ 115° Southeast

Sunset

5:07 pm
↑ 245° Southwest

Day length

9 hours, 49 minutes
+1m 45s longer

Moon 7.6%

Rise – 8:59 am
Set – 8:20 pm

More Sun & Moon in Boulder
+ Show More Twilight and Moon Phase Information

Solar Noon

Sun in South: 12:12 pm
Altitude: 30.2°

Astronomical
Twilight

5:43 am – 6:15 am
6:09 pm – 6:41 pm

Nautical
Twilight

6:15 am – 6:48 am
5:36 pm – 6:09 pm

Civil
Twilight

6:48 am – 7:17 am
5:07 pm – 5:36 pm

Previous
Moon Phase

New Moon
January 18, 2026
12:51 pm

Next
Moon Phase

First Quarter
January 25, 2026
9:47 pm

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Tools & Converters

Calendar & Holidays

Create the United States calendar

Upcoming Holidays

More Holidays in the United States

Airports

Denver International Airport, DEN
About 33 mi ESE of Boulder
Colorado Springs Airport, COS
About 89 mi SSE of Boulder

Other cities near Boulder

Fullscreen Exit

Boulder

USA

6:0757am

Wednesday, January 21, 2026