Weather Forecast for Boulder
Colorado, United States of America
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Current Weather - Boulder: 18°C
Current Weather - Boulder: 18°C
Colorado, United States of America
Clear
Feels like 13°C
Wind
12 km/h WSW
Humidity
33%
Pressure
1010 mb
UV Index
0
Visibility
10 km
Sunny
Friday, September 04, 2026
High
31°C
Low
17°C
Rain Chance
2%
Hourly Forecast
26°C
27°C
28°C
30°C
30°C
31°C
31°C
29°C
27°C
22°C
22°C
22°C
20°C
19°C
Day Statistics
Maximum Wind
17 km/h
Humidity
29%
Precipitation
0 mm
UV Index
9
Visibility
10 km
Rain Chance
2%
Snow Chance
0%
Sun & Moon
Sunrise
06:31 AM
Sunset
07:28 PM
Moonrise
11:32 PM
Moonset
02:39 PM
Moon Phase
Last Quarter
Moon Illumination
39%
Air Quality
PM2.5
3.5
μg/m³
PM10
4.3
μg/m³
NO₂
8.7
μg/m³
O₃
60.4
μg/m³
SO₂
0.4
μg/m³
CO
121.7
μg/m³
Overcast
Saturday, September 05, 2026
High
30°C
Low
17°C
Rain Chance
18%
Hourly Forecast
19°C
19°C
19°C
18°C
18°C
17°C
17°C
18°C
21°C
24°C
26°C
27°C
28°C
29°C
30°C
25°C
26°C
27°C
27°C
24°C
24°C
23°C
21°C
21°C
Day Statistics
Maximum Wind
20 km/h
Humidity
36%
Precipitation
0 mm
UV Index
8
Visibility
10 km
Rain Chance
18%
Snow Chance
0%
Sun & Moon
Sunrise
06:32 AM
Sunset
07:26 PM
Moonrise
Does not rise today
Moonset
03:42 PM
Moon Phase
Waning Crescent
Moon Illumination
29%
Air Quality
PM2.5
3.5
μg/m³
PM10
3.9
μg/m³
NO₂
7.9
μg/m³
O₃
64
μg/m³
SO₂
0.4
μg/m³
CO
116.9
μg/m³
Overcast
Sunday, September 06, 2026
High
29°C
Low
18°C
Rain Chance
57%
Hourly Forecast
22°C
21°C
20°C
19°C
19°C
19°C
19°C
19°C
22°C
25°C
26°C
27°C
28°C
29°C
26°C
28°C
26°C
24°C
22°C
18°C
19°C
18°C
18°C
18°C
Day Statistics
Maximum Wind
23 km/h
Humidity
44%
Precipitation
1 mm
UV Index
9
Visibility
10 km
Rain Chance
57%
Snow Chance
0%
Sun & Moon
Sunrise
06:33 AM
Sunset
07:25 PM
Moonrise
12:35 AM
Moonset
04:37 PM
Moon Phase
Waning Crescent
Moon Illumination
20%
Air Quality
PM2.5
5.4
μg/m³
PM10
5.8
μg/m³
NO₂
10.5
μg/m³
O₃
71.8
μg/m³
SO₂
0.5
μg/m³
CO
119.3
μg/m³
Overcast
Monday, September 07, 2026
High
27°C
Low
16°C
Rain Chance
36%
Hourly Forecast
17°C
17°C
16°C
16°C
16°C
16°C
16°C
16°C
19°C
22°C
24°C
25°C
26°C
25°C
25°C
26°C
25°C
27°C
23°C
21°C
21°C
17°C
17°C
16°C
Day Statistics
Maximum Wind
15 km/h
Humidity
56%
Precipitation
0 mm
UV Index
6
Visibility
10 km
Rain Chance
36%
Snow Chance
0%
Sun & Moon
Sunrise
06:34 AM
Sunset
07:23 PM
Moonrise
01:49 AM
Moonset
05:22 PM
Moon Phase
Waning Crescent
Moon Illumination
12%
Air Quality
PM2.5
4.3
μg/m³
PM10
4.8
μg/m³
NO₂
8.9
μg/m³
O₃
58.9
μg/m³
SO₂
0.3
μg/m³
CO
122.2
μg/m³
Sunny
Tuesday, September 08, 2026
High
29°C
Low
15°C
Rain Chance
57%
Hourly Forecast
17°C
15°C
15°C
16°C
15°C
15°C
16°C
16°C
20°C
22°C
25°C
26°C
26°C
27°C
28°C
29°C
26°C
24°C
21°C
19°C
18°C
16°C
16°C
17°C
Day Statistics
Maximum Wind
26 km/h
Humidity
51%
Precipitation
2 mm
UV Index
7
Visibility
10 km
Rain Chance
57%
Snow Chance
0%
Sun & Moon
Sunrise
06:35 AM
Sunset
07:21 PM
Moonrise
03:07 AM
Moonset
05:59 PM
Moon Phase
Waning Crescent
Moon Illumination
6%
Air Quality
PM2.5
3.7
μg/m³
PM10
4
μg/m³
NO₂
11.6
μg/m³
O₃
32
μg/m³
SO₂
0.3
μg/m³
CO
156
μg/m³
Overcast
Wednesday, September 09, 2026
High
30°C
Low
16°C
Rain Chance
57%
Hourly Forecast
17°C
17°C
17°C
17°C
16°C
16°C
16°C
18°C
21°C
23°C
24°C
26°C
27°C
28°C
29°C
30°C
29°C
29°C
28°C
24°C
21°C
17°C
17°C
17°C
Day Statistics
Maximum Wind
31 km/h
Humidity
47%
Precipitation
3 mm
UV Index
7
Visibility
10 km
Rain Chance
57%
Snow Chance
0%
Sun & Moon
Sunrise
06:36 AM
Sunset
07:20 PM
Moonrise
04:27 AM
Moonset
06:30 PM
Moon Phase
New Moon
Moon Illumination
2%
Overcast
Thursday, September 10, 2026
High
26°C
Low
16°C
Rain Chance
13%
Hourly Forecast
18°C
17°C
16°C
16°C
16°C
16°C
16°C
17°C
19°C
20°C
22°C
23°C
24°C
24°C
24°C
24°C
25°C
25°C
26°C
24°C
22°C
20°C
19°C
17°C
Day Statistics
Maximum Wind
21 km/h
Humidity
53%
Precipitation
0 mm
UV Index
6
Visibility
10 km
Rain Chance
13%
Snow Chance
0%
Sun & Moon
Sunrise
06:37 AM
Sunset
07:18 PM
Moonrise
05:46 AM
Moonset
06:57 PM
Moon Phase
New Moon
Moon Illumination
0%
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