Hourly Weather in Longmont, Colorado, United States
∙ View on Radar5 min
1 hour
6 hours
1 day
Wind
3 mph
Calm
8 mph
Light
7 mph
Light
8 mph
Light
8 mph
Light
8 mph
Light
8 mph
Light
9 mph
Light
8 mph
Light
Humidity
94%
Extremely humid
79%
Extremely humid
78%
Extremely humid
71%
Extremely humid
64%
Humid
56%
Comfortable
50%
Comfortable
44%
Dry
45%
Dry
Visibility
5 mi
Fair
10 mi
Good
10 mi
Good
10 mi
Good
10 mi
Good
10 mi
Good
10 mi
Good
10 mi
Good
10 mi
Good
Pressure
1017 hPa
Normal
1022 hPa
High
1022 hPa
High
1022 hPa
High
1022 hPa
High
1021 hPa
High
1020 hPa
High
1020 hPa
High
1020 hPa
High
Clouds
50%
27%
13%
4%
1%
11%
100%
100%
100%
Dew point
22°
21°
22°
23°
23°
23°
22°
22°
21°
UV Index
0
0
1
2
2
2
1
0
0
Air quality
27
Good
26
Good
26
Good
25
Good
25
Good
27
Good
29
Good
44
Good
44
Good
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
0 / 5
0 / 5
0 / 5
0 / 5
0 / 5
0 / 5
0 / 5
0 / 5
0 / 5
Pollutants
Low risk
High risk
PM10
0.21 μg/ft3
0.21 μg/ft3
0.21 μg/ft3
0.21 μg/ft3
0.21 μg/ft3
0.21 μg/ft3
0.21 μg/ft3
0.09 μg/ft3
0.09 μg/ft3
PM25
0.18 μg/ft3
0.18 μg/ft3
0.17 μg/ft3
0.17 μg/ft3
0.16 μg/ft3
0.16 μg/ft3
0.16 μg/ft3
0.32 μg/ft3
0.31 μg/ft3
NO2
2.85 ppb
2.15 ppb
1.41 ppb
0.7 ppb
0.64 ppb
0.54 ppb
0.43 ppb
1 ppb
1.5 ppb
SO2
0.06 ppb
0.1 ppb
0.1 ppb
0.16 ppb
0.16 ppb
0.16 ppb
0.21 ppb
0.3 ppb
0.3 ppb
CO
0.32 ppb
0.27 ppb
0.27 ppb
0.21 ppb
0.16 ppb
0.16 ppb
0.16 ppb
0.2 ppb
0.2 ppb
O3
19.1 ppb
20.4 ppb
22.3 ppb
24.6 ppb
26.9 ppb
29.1 ppb
31 ppb
44.1 ppb
44.3 ppb