Hourly Weather in Bull Run Research Natural Area, United States
∙ View on Radar5 min
1 hour
6 hours
1 day
Wind
17 km/h
Breezy
22 km/h
Breezy
22 km/h
Breezy
21 km/h
Breezy
20 km/h
Breezy
17 km/h
Breezy
14 km/h
Light
15 km/h
Light
17 km/h
Breezy
Humidity
75%
Extremely humid
76%
Extremely humid
73%
Extremely humid
74%
Extremely humid
76%
Extremely humid
76%
Extremely humid
79%
Extremely humid
84%
Extremely humid
90%
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
14 km
Good
Pressure
1014 hPa
Normal
1013 hPa
Normal
1013 hPa
Normal
1013 hPa
Normal
1014 hPa
Normal
1014 hPa
Normal
1014 hPa
Normal
1014 hPa
Normal
1015 hPa
Normal
Clouds
65%
23%
17%
15%
13%
2%
3%
17%
38%
Dew point
10°
11°
11°
11°
11°
10°
10°
10°
11°
UV Index
2
2
1
1
0
0
0
0
0
Air quality
25
Good
25
Good
25
Good
177
Unhealthy
177
Unhealthy
177
Unhealthy
177
Unhealthy
177
Unhealthy
20
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
4.4 μg/m3
4.4 μg/m3
4.4 μg/m3
307 μg/m3
307 μg/m3
307 μg/m3
307 μg/m3
307 μg/m3
4.5 μg/m3
PM25
3.4 μg/m3
3.4 μg/m3
3.5 μg/m3
3.6 μg/m3
3.8 μg/m3
3.9 μg/m3
4.1 μg/m3
4.2 μg/m3
3.5 μg/m3
NO2
0.3 ppb
0.3 ppb
0.3 ppb
0.5 ppb
0.6 ppb
0.6 ppb
1.5 ppb
2.4 ppb
4.5 ppb
SO2
0.2 ppb
0.2 ppb
0.2 ppb
0.2 ppb
0.2 ppb
0.2 ppb
0.2 ppb
0.2 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
27 ppb
26.9 ppb
26.7 ppb
26.5 ppb
26.2 ppb
26 ppb
25.7 ppb
25.5 ppb
17.5 ppb