Weather Forecast for Boulder
Colorado, United States of America
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Current Weather - Boulder: 32°C
Current Weather - Boulder: 32°C
Colorado, United States of America
Partly cloudy
Feels like 31°C
Wind
13 km/h E
Humidity
32%
Pressure
1023 mb
UV Index
11
Visibility
16 km
Sunny
Friday, July 24, 2026
High
34°C
Low
16°C
Rain Chance
3%
Hourly Forecast
26°C
23°C
23°C
21°C
Day Statistics
Maximum Wind
18 km/h
Humidity
41%
Precipitation
0 mm
UV Index
11
Visibility
10 km
Rain Chance
3%
Snow Chance
0%
Sun & Moon
Sunrise
05:52 AM
Sunset
08:22 PM
Moonrise
05:24 PM
Moonset
01:26 AM
Moon Phase
Waxing Gibbous
Moon Illumination
82%
Air Quality
PM2.5
6.1
μg/m³
PM10
6.6
μg/m³
NO₂
7.8
μg/m³
O₃
81.8
μg/m³
SO₂
0.4
μg/m³
CO
128.5
μg/m³
Sunny
Saturday, July 25, 2026
High
35°C
Low
19°C
Rain Chance
57%
Hourly Forecast
22°C
23°C
22°C
21°C
20°C
20°C
19°C
21°C
28°C
31°C
31°C
33°C
34°C
35°C
33°C
32°C
34°C
20°C
22°C
25°C
23°C
19°C
20°C
20°C
Day Statistics
Maximum Wind
23 km/h
Humidity
38%
Precipitation
2 mm
UV Index
11
Visibility
10 km
Rain Chance
57%
Snow Chance
0%
Sun & Moon
Sunrise
05:53 AM
Sunset
08:22 PM
Moonrise
06:19 PM
Moonset
02:11 AM
Moon Phase
Waxing Gibbous
Moon Illumination
90%
Air Quality
PM2.5
5.5
μg/m³
PM10
5.7
μg/m³
NO₂
6.7
μg/m³
O₃
87
μg/m³
SO₂
0.4
μg/m³
CO
130.3
μg/m³
Sunny
Sunday, July 26, 2026
High
36°C
Low
19°C
Rain Chance
36%
Hourly Forecast
20°C
20°C
19°C
19°C
19°C
19°C
19°C
21°C
27°C
31°C
33°C
34°C
35°C
36°C
36°C
36°C
29°C
28°C
30°C
29°C
24°C
23°C
21°C
21°C
Day Statistics
Maximum Wind
24 km/h
Humidity
37%
Precipitation
1 mm
UV Index
11
Visibility
10 km
Rain Chance
36%
Snow Chance
0%
Sun & Moon
Sunrise
05:54 AM
Sunset
08:21 PM
Moonrise
07:06 PM
Moonset
03:04 AM
Moon Phase
Waxing Gibbous
Moon Illumination
95%
Air Quality
PM2.5
4.9
μg/m³
PM10
5.5
μg/m³
NO₂
7.6
μg/m³
O₃
81
μg/m³
SO₂
0.3
μg/m³
CO
116.2
μg/m³
Sunny
Monday, July 27, 2026
High
34°C
Low
18°C
Rain Chance
57%
Hourly Forecast
21°C
21°C
21°C
20°C
20°C
20°C
20°C
22°C
27°C
30°C
31°C
32°C
33°C
34°C
34°C
18°C
20°C
28°C
25°C
26°C
22°C
21°C
20°C
20°C
Day Statistics
Maximum Wind
26 km/h
Humidity
43%
Precipitation
3 mm
UV Index
11
Visibility
10 km
Rain Chance
57%
Snow Chance
0%
Sun & Moon
Sunrise
05:55 AM
Sunset
08:20 PM
Moonrise
07:45 PM
Moonset
04:02 AM
Moon Phase
Full Moon
Moon Illumination
99%
Air Quality
PM2.5
4.2
μg/m³
PM10
5.2
μg/m³
NO₂
7.5
μg/m³
O₃
80.8
μg/m³
SO₂
0.4
μg/m³
CO
123.8
μg/m³
Sunny
Tuesday, July 28, 2026
High
35°C
Low
17°C
Rain Chance
59%
Hourly Forecast
20°C
19°C
18°C
18°C
18°C
18°C
18°C
20°C
26°C
28°C
30°C
31°C
32°C
33°C
34°C
35°C
31°C
22°C
19°C
20°C
18°C
17°C
17°C
17°C
Day Statistics
Maximum Wind
18 km/h
Humidity
53%
Precipitation
19 mm
UV Index
8
Visibility
9 km
Rain Chance
59%
Snow Chance
0%
Sun & Moon
Sunrise
05:55 AM
Sunset
08:19 PM
Moonrise
08:18 PM
Moonset
05:03 AM
Moon Phase
Full Moon
Moon Illumination
100%
Air Quality
PM2.5
4.7
μg/m³
PM10
5.2
μg/m³
NO₂
10.7
μg/m³
O₃
47.3
μg/m³
SO₂
0.4
μg/m³
CO
162.7
μg/m³
Sunny
Wednesday, July 29, 2026
High
34°C
Low
16°C
Rain Chance
2%
Hourly Forecast
16°C
16°C
16°C
16°C
16°C
16°C
16°C
19°C
22°C
25°C
27°C
28°C
30°C
31°C
33°C
34°C
31°C
29°C
26°C
25°C
23°C
21°C
21°C
21°C
Day Statistics
Maximum Wind
17 km/h
Humidity
50%
Precipitation
0 mm
UV Index
8
Visibility
10 km
Rain Chance
2%
Snow Chance
0%
Sun & Moon
Sunrise
05:56 AM
Sunset
08:18 PM
Moonrise
08:45 PM
Moonset
06:05 AM
Moon Phase
Full Moon
Moon Illumination
99%
Sunny
Thursday, July 30, 2026
High
36°C
Low
19°C
Rain Chance
1%
Hourly Forecast
20°C
20°C
20°C
20°C
20°C
19°C
19°C
23°C
26°C
30°C
31°C
33°C
34°C
35°C
35°C
36°C
31°C
25°C
20°C
20°C
20°C
20°C
20°C
20°C
Day Statistics
Maximum Wind
16 km/h
Humidity
39%
Precipitation
0 mm
UV Index
9
Visibility
10 km
Rain Chance
1%
Snow Chance
0%
Sun & Moon
Sunrise
05:57 AM
Sunset
08:17 PM
Moonrise
09:09 PM
Moonset
07:07 AM
Moon Phase
Waning Gibbous
Moon Illumination
96%
Solar Radiation Data
Shortwave Radiation
508.96
Diffuse Radiation
58.66
DNI
0
GTI
0
Weather Alerts
Heat Advisory issued July 24 at 2:51AM MDT until July 26 at 9:00PM MDT by NWS Denver CO
* WHAT...Temperatures from 99 to 103. * WHERE...Fort Collins, Boulder and the western suburbs of Denver, Denver, and Greeley. * WHEN...From 11 AM to 9 PM MDT both Saturday and Sunday. * IMPACTS...Hot temperatures may cause heat illnesses.
Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Take extra precautions when outside. Wear lightweight and loose fitting clothing. Try to limit strenuous activities to early morning or evening. Take action when you see symptoms of heat exhaustion and heat stroke.
Heat Advisory issued July 24 at 2:51AM MDT until July 25 at 9:00PM MDT by NWS Denver CO
* WHAT...Temperatures from 99 to 103. * WHERE...Fort Collins, Boulder and the western suburbs of Denver, Denver, and Greeley. * WHEN...From 11 AM to 9 PM MDT both Saturday and Sunday. * IMPACTS...Hot temperatures may cause heat illnesses.
Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Take extra precautions when outside. Wear lightweight and loose fitting clothing. Try to limit strenuous activities to early morning or evening. Take action when you see symptoms of heat exhaustion and heat stroke.
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