Hourly Weather in Ashburn, Virginia, United States
∙ View on Radar5 min
1 hour
6 hours
1 day
Wind
7 mph
Light
7 mph
Light
7 mph
Light
7 mph
Light
7 mph
Light
7 mph
Light
6 mph
Light
6 mph
Light
6 mph
Light
Humidity
80%
Extremely humid
84%
Extremely humid
86%
Extremely humid
87%
Extremely humid
87%
Extremely humid
86%
Extremely humid
80%
Extremely humid
65%
Humid
51%
Comfortable
Visibility
10 mi
Good
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
1011 hPa
Normal
1010 hPa
Normal
1010 hPa
Normal
1010 hPa
Normal
1010 hPa
Normal
1010 hPa
Normal
1010 hPa
Normal
1010 hPa
Normal
1009 hPa
Normal
Clouds
0%
0%
0%
0%
28%
67%
100%
0%
0%
Dew point
52°
52°
52°
52°
51°
49°
49°
49°
47°
UV Index
0
0
0
0
0
0
0
0
1
Air quality
63
Moderate
64
Moderate
65
Moderate
62
Moderate
64
Moderate
65
Moderate
65
Moderate
64
Moderate
65
Moderate
Pollen index
Tree
Weed
Grass
Pollutants
Low risk
High risk
PM10
0.60 μg/ft3
0.66 μg/ft3
0.72 μg/ft3
0.76 μg/ft3
0.78 μg/ft3
0.78 μg/ft3
0.76 μg/ft3
0.73 μg/ft3
0.79 μg/ft3
PM25
0.42 μg/ft3
0.46 μg/ft3
0.50 μg/ft3
0.53 μg/ft3
0.54 μg/ft3
0.55 μg/ft3
0.53 μg/ft3
0.51 μg/ft3
0.55 μg/ft3
NO2
8.68 ppb
7.42 ppb
6.77 ppb
6.12 ppb
5.47 ppb
5.36 ppb
5.26 ppb
5.15 ppb
4.08 ppb
SO2
2.43 ppb
2.04 ppb
2.02 ppb
2 ppb
1.99 ppb
2.08 ppb
2.16 ppb
2.25 ppb
1.94 ppb
CO
0.18 ppb
0.18 ppb
0.18 ppb
0.18 ppb
0.19 ppb
0.19 ppb
0.19 ppb
0.19 ppb
0.2 ppb
O3
35.61 ppb
33.17 ppb
31.98 ppb
30.78 ppb
29.58 ppb
30.38 ppb
31.19 ppb
32 ppb
41.74 ppb