Hourly Weather in Bull Run, Maryland, United States
∙ View on Radar5 min
1 hour
6 hours
1 day
Wind
12 km/h
Light
10 km/h
Light
14 km/h
Light
18 km/h
Breezy
15 km/h
Light
14 km/h
Light
15 km/h
Light
17 km/h
Breezy
15 km/h
Light
Humidity
51%
Comfortable
58%
Comfortable
64%
Humid
67%
Humid
68%
Humid
74%
Extremely humid
74%
Extremely humid
75%
Extremely humid
81%
Extremely humid
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
1020 hPa
High
1020 hPa
High
1020 hPa
High
1021 hPa
High
1020 hPa
High
1021 hPa
High
1020 hPa
High
1020 hPa
High
1020 hPa
High
Clouds
100%
100%
100%
100%
100%
54%
100%
100%
100%
Dew point
15°
17°
18°
18°
18°
19°
19°
19°
19°
UV Index
0
0
0
0
0
0
0
0
0
Air quality
42
Good
42
Good
42
Good
42
Good
42
Good
42
Good
42
Good
37
Good
38
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
1 / 5
1 / 5
1 / 5
1 / 5
1 / 5
1 / 5
1 / 5
1 / 5
1 / 5
Pollutants
Low risk
High risk
PM10
7.5 μg/m3
7.5 μg/m3
7.5 μg/m3
7.5 μg/m3
7.5 μg/m3
7.5 μg/m3
7.5 μg/m3
8.8 μg/m3
8.8 μg/m3
PM25
4.5 μg/m3
4.5 μg/m3
4.6 μg/m3
4.6 μg/m3
4.7 μg/m3
4.7 μg/m3
4.8 μg/m3
6.7 μg/m3
6.7 μg/m3
NO2
1.1 ppb
1.5 ppb
1.6 ppb
1.8 ppb
1.9 ppb
1.9 ppb
1.9 ppb
2.3 ppb
2.3 ppb
SO2
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
CO
0.2 ppb
0.2 ppb
0.2 ppb
0.2 ppb
0.2 ppb
0.2 ppb
0.2 ppb
0.1 ppb
0.1 ppb
O3
45.3 ppb
45.2 ppb
45.1 ppb
45 ppb
44.9 ppb
44.8 ppb
44.7 ppb
34 ppb
33 ppb