Moon phases and lunar calendar for Boulder

Today Tomorrow Month

Monday, 03 August 2026, 07:38

Moonrise: 22:35

Moon phase:: Waning gibbous

Moonset: 11:16

Tuesday, 04 August 2026

Moonrise: 23:04

Moon phase:: Waning gibbous

Moonset: 12:27

Moon phase calendar for month for Boulder

Day	Moon phase	Moonrise	Nadir	Moonset	Illumination
01 August, 2026	Waning gibbous	21:47	01:08	09:00	91.62%
02 August, 2026	Waning gibbous	22:08	01:08	10:07	84.8%
03 August, 2026	Waning gibbous	22:35	01:08	11:16	76.17%
04 August, 2026	Waning gibbous	23:04	01:08	12:27	66.06%
05 August, 2026	Waning gibbous	23:37	01:08	13:42	54.91%
06 August, 2026	Waning crescent	--:--	01:08	14:58	43.33%
07 August, 2026	Waning crescent	00:19	01:08	16:13	31.97%
08 August, 2026	Waning crescent	01:12	01:08	17:22	21.52%
09 August, 2026	Waning crescent	02:15	01:07	18:21	12.63%
10 August, 2026	Waning crescent	03:28	01:07	19:08	5.87%
11 August, 2026	Waning crescent	04:45	01:07	19:46	1.6%
12 August, 2026	Waning crescent	06:02	01:07	20:17	0.02%
13 August, 2026	Waxing crescent	07:15	01:07	20:43	1.11%
14 August, 2026	Waxing crescent	08:26	01:07	21:06	4.65%
15 August, 2026	Waxing crescent	09:34	01:06	21:28	10.29%
16 August, 2026	Waxing crescent	10:40	01:06	21:51	17.6%
17 August, 2026	Waxing crescent	11:45	01:06	22:15	26.1%
18 August, 2026	Waxing crescent	12:51	01:06	22:42	35.34%
19 August, 2026	First quarter	13:54	01:06	23:15	44.92%
20 August, 2026	First quarter	14:56	01:05	23:53	54.5%
21 August, 2026	Waxing gibbous	15:54	01:05	--:--	63.78%
22 August, 2026	Waxing gibbous	16:45	01:05	00:39	72.51%
23 August, 2026	Waxing gibbous	17:29	01:05	01:32	80.45%
24 August, 2026	Waxing gibbous	18:06	01:04	02:31	87.36%
25 August, 2026	Waxing gibbous	18:36	01:04	03:33	93.01%
26 August, 2026	Waxing gibbous	19:03	01:04	04:37	97.14%
27 August, 2026	Full Moon	19:27	01:04	05:42	99.51%
28 August, 2026	Full Moon	19:50	01:03	06:47	99.88%
29 August, 2026	Waning gibbous	20:13	01:03	07:53	98.1%
30 August, 2026	Waning gibbous	20:37	01:03	09:00	94.07%
31 August, 2026	Waning gibbous	21:03	01:02	10:09	87.83%

Calculations City information

Illumination: 76.17%

Moonrise: 22:35

Nadir: 01:08

Moonset: 11:16

Altitude above/below the horizon: 38.8527°

Azimuth: 61.8128°

Distance to Earth: 234 785,68 mi

City: Boulder, United States

Population: 107349

Time Zone: America/Denver

GMT/UTC: -6 hours

Latitude: 40.01499

Latitude: -105.27055

Erie Arvada Westminster Longmont Broomfield Golden Lafayette Louisville