Weather Forecast for Boulder
Colorado, United States of America
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Current Weather - Boulder: 36°C
Current Weather - Boulder: 36°C
Colorado, United States of America
Sunny
Feels like 32°C
Wind
6 km/h NW
Humidity
8%
Pressure
1011 mb
UV Index
8
Visibility
10 km
Sunny
Saturday, August 08, 2026
High
37°C
Low
17°C
Rain Chance
1%
Hourly Forecast
27°C
24°C
22°C
22°C
Day Statistics
Maximum Wind
21 km/h
Humidity
14%
Precipitation
0 mm
UV Index
8
Visibility
10 km
Rain Chance
1%
Snow Chance
0%
Sun & Moon
Sunrise
06:06 AM
Sunset
08:07 PM
Moonrise
12:46 AM
Moonset
04:52 PM
Moon Phase
Waning Crescent
Moon Illumination
16%
Air Quality
PM2.5
10.2
μg/m³
PM10
11.8
μg/m³
NO₂
9
μg/m³
O₃
94.2
μg/m³
SO₂
0.8
μg/m³
CO
133.4
μg/m³
Sunny
Sunday, August 09, 2026
High
36°C
Low
18°C
Rain Chance
17%
Hourly Forecast
23°C
22°C
20°C
19°C
19°C
19°C
18°C
20°C
28°C
32°C
34°C
35°C
36°C
35°C
36°C
33°C
35°C
32°C
29°C
25°C
20°C
20°C
19°C
18°C
Day Statistics
Maximum Wind
21 km/h
Humidity
23%
Precipitation
0 mm
UV Index
8
Visibility
10 km
Rain Chance
17%
Snow Chance
0%
Sun & Moon
Sunrise
06:07 AM
Sunset
08:06 PM
Moonrise
01:44 AM
Moonset
05:55 PM
Moon Phase
Waning Crescent
Moon Illumination
9%
Air Quality
PM2.5
7.7
μg/m³
PM10
9
μg/m³
NO₂
8.3
μg/m³
O₃
81
μg/m³
SO₂
0.6
μg/m³
CO
142.2
μg/m³
Sunny
Monday, August 10, 2026
High
35°C
Low
16°C
Rain Chance
57%
Hourly Forecast
18°C
19°C
19°C
19°C
19°C
18°C
16°C
19°C
27°C
29°C
31°C
33°C
34°C
35°C
35°C
35°C
34°C
19°C
25°C
28°C
21°C
22°C
22°C
21°C
Day Statistics
Maximum Wind
19 km/h
Humidity
29%
Precipitation
1 mm
UV Index
8
Visibility
10 km
Rain Chance
57%
Snow Chance
0%
Sun & Moon
Sunrise
06:08 AM
Sunset
08:04 PM
Moonrise
02:54 AM
Moonset
06:47 PM
Moon Phase
New Moon
Moon Illumination
4%
Air Quality
PM2.5
7.6
μg/m³
PM10
8.4
μg/m³
NO₂
6.9
μg/m³
O₃
94.3
μg/m³
SO₂
0.5
μg/m³
CO
165.4
μg/m³
Sunny
Tuesday, August 11, 2026
High
35°C
Low
17°C
Rain Chance
57%
Hourly Forecast
20°C
19°C
19°C
18°C
17°C
17°C
17°C
19°C
27°C
30°C
31°C
32°C
34°C
35°C
34°C
33°C
34°C
32°C
21°C
30°C
21°C
18°C
17°C
17°C
Day Statistics
Maximum Wind
37 km/h
Humidity
32%
Precipitation
1 mm
UV Index
8
Visibility
10 km
Rain Chance
57%
Snow Chance
0%
Sun & Moon
Sunrise
06:09 AM
Sunset
08:03 PM
Moonrise
04:14 AM
Moonset
07:29 PM
Moon Phase
New Moon
Moon Illumination
1%
Air Quality
PM2.5
7
μg/m³
PM10
7.8
μg/m³
NO₂
7.2
μg/m³
O₃
96.3
μg/m³
SO₂
0.5
μg/m³
CO
158.4
μg/m³
Sunny
Wednesday, August 12, 2026
High
34°C
Low
16°C
Rain Chance
17%
Hourly Forecast
20°C
16°C
16°C
18°C
16°C
16°C
17°C
19°C
27°C
26°C
31°C
32°C
31°C
32°C
33°C
34°C
29°C
28°C
32°C
26°C
21°C
19°C
18°C
17°C
Day Statistics
Maximum Wind
28 km/h
Humidity
33%
Precipitation
0 mm
UV Index
8
Visibility
10 km
Rain Chance
17%
Snow Chance
0%
Sun & Moon
Sunrise
06:09 AM
Sunset
08:02 PM
Moonrise
05:36 AM
Moonset
08:04 PM
Moon Phase
New Moon
Moon Illumination
0%
Air Quality
PM2.5
7.8
μg/m³
PM10
8.1
μg/m³
NO₂
14.6
μg/m³
O₃
49.6
μg/m³
SO₂
0.4
μg/m³
CO
206.4
μg/m³
Sunny
Thursday, August 13, 2026
High
32°C
Low
11°C
Rain Chance
3%
Hourly Forecast
17°C
15°C
13°C
11°C
11°C
11°C
12°C
14°C
17°C
20°C
23°C
25°C
28°C
29°C
30°C
32°C
31°C
31°C
31°C
28°C
24°C
21°C
20°C
19°C
Day Statistics
Maximum Wind
10 km/h
Humidity
50%
Precipitation
0 mm
UV Index
8
Visibility
10 km
Rain Chance
3%
Snow Chance
0%
Sun & Moon
Sunrise
06:10 AM
Sunset
08:00 PM
Moonrise
06:57 AM
Moonset
08:33 PM
Moon Phase
New Moon
Moon Illumination
2%
Sunny
Friday, August 14, 2026
High
28°C
Low
11°C
Rain Chance
58%
Hourly Forecast
18°C
17°C
16°C
15°C
14°C
13°C
11°C
14°C
17°C
20°C
22°C
24°C
25°C
26°C
27°C
28°C
26°C
24°C
22°C
21°C
21°C
20°C
19°C
18°C
Day Statistics
Maximum Wind
19 km/h
Humidity
61%
Precipitation
4 mm
UV Index
7
Visibility
10 km
Rain Chance
58%
Snow Chance
0%
Sun & Moon
Sunrise
06:11 AM
Sunset
07:59 PM
Moonrise
08:14 AM
Moonset
08:59 PM
Moon Phase
Waxing Crescent
Moon Illumination
5%
Weather Alerts
Air Quality Alert issued August 7 at 10:10PM MDT by NWS Denver CO
The Colorado Department of Public Health and Environment has issued the following... WHAT...Action Day for Multiple Pollutants. WHERE...Douglas, Jefferson, Denver, western Arapahoe, western Adams, Broomfield, Boulder, Larimer, and Weld Counties WHEN...400 PM Friday August 07 to 400 PM Saturday August 08 IMPACTS...Action Day for Multiple Pollutants is now in effect for the Front Range Urban Corridor. Ozone is expected to be in the Moderate to Unhealthy for Sensitive Groups range on Thursday and Friday. The highest concentrations of ozone are most likely in the southern and western portions of the Denver Metro area. Fine particulate concentrations are expected to be in the Moderate to Unhealthy for Sensitive Groups range on Thursday and Friday. For Colorado air quality conditions, forecasts, and advisories, visit: https://www.colorado.gov/airquality/colorado_summary.aspx If possible, please help us reduce ozone pollution by limiting driving gas and diesel-powered vehicles until at least 4 p.m. Saturday, August 8, 2026. Colorado is also addressing ozone pollution through state policies. For more information about health impacts and how ozone pollution forms in Colorado, visit: https://cdphe.colorado.gov/ozone-pollution-and-your-health HEALTH INFORMATION...Increasing likelihood of respiratory symptoms and breathing discomfort in active children and adults and people with lung disease, such as asthma. Active children and adults, and people with lung disease, such as asthma, should reduce prolonged or heavy outdoor exertion.
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