Hourly Weather in Boulder, Colorado, United States
∙ View on Radar5 min
1 hour
6 hours
1 day
Wind
6 km/h
Calm
8 km/h
Light
9 km/h
Light
10 km/h
Light
15 km/h
Light
7 km/h
Calm
11 km/h
Light
8 km/h
Calm
8 km/h
Calm
Humidity
36%
Dry
35%
Dry
31%
Dry
33%
Dry
30%
Dry
27%
Very dry
30%
Dry
27%
Very dry
28%
Very dry
Visibility
16 km
Good
16 km
Good
16 km
Good
16 km
Good
16 km
Good
16 km
Good
16 km
Good
16 km
Good
16 km
Good
Pressure
1008 hPa
Low
1008 hPa
Low
1008 hPa
Low
1007 hPa
Low
1006 hPa
Low
1006 hPa
Low
1005 hPa
Low
1005 hPa
Low
1006 hPa
Low
Clouds
100%
100%
100%
19%
30%
58%
12%
52%
89%
Dew point
13°
12°
11°
14°
12°
11°
13°
12°
12°
UV Index
3
3
7
9
8
7
4
2
1
Air quality
37
Good
39
Good
41
Good
44
Good
46
Good
49
Good
51
Moderate
54
Moderate
54
Moderate
Pollen index
Tree
0 / 5
0 / 5
0 / 5
0 / 5
0 / 5
0 / 5
0 / 5
0 / 5
0 / 5
Weed
0 / 5
0 / 5
0 / 5
0 / 5
0 / 5
0 / 5
0 / 5
0 / 5
0 / 5
Grass
2 / 5
2 / 5
2 / 5
1 / 5
2 / 5
1 / 5
2 / 5
2 / 5
1 / 5
Pollutants
Low risk
High risk
PM10
24.8 μg/m3
24.8 μg/m3
24.8 μg/m3
24.8 μg/m3
24.8 μg/m3
24.8 μg/m3
24.8 μg/m3
4.3 μg/m3
4.4 μg/m3
PM25
4 μg/m3
4.3 μg/m3
4.6 μg/m3
5 μg/m3
5.4 μg/m3
5.7 μg/m3
6 μg/m3
3.4 μg/m3
3.7 μg/m3
NO2
2.2 ppb
1.5 ppb
0.9 ppb
0.7 ppb
0.6 ppb
0.5 ppb
0.9 ppb
1.4 ppb
1.9 ppb
SO2
0.1 ppb
0.1 ppb
0.2 ppb
0.2 ppb
0.2 ppb
0.2 ppb
0.3 ppb
0.3 ppb
0.3 ppb
CO
0.1 ppb
0.1 ppb
0.1 ppb
0.1 ppb
0.1 ppb
0.1 ppb
0.1 ppb
0.1 ppb
0.1 ppb
O3
39.8 ppb
41.6 ppb
44 ppb
46.9 ppb
49.9 ppb
52.8 ppb
55.3 ppb
59.6 ppb
58.7 ppb