Hourly Weather in Frederick, Maryland, United States
∙ View on Radar5 min
1 hour
6 hours
1 day
Wind
5 mph
Calm
4 mph
Calm
4 mph
Calm
4 mph
Calm
4 mph
Calm
6 mph
Light
3 mph
Calm
4 mph
Calm
5 mph
Calm
Humidity
73%
Extremely humid
83%
Extremely humid
83%
Extremely humid
84%
Extremely humid
84%
Extremely humid
76%
Extremely humid
68%
Humid
57%
Comfortable
45%
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
1028 hPa
Very high
1027 hPa
Very high
1027 hPa
Very high
1027 hPa
Very high
1028 hPa
Very high
1028 hPa
Very high
1029 hPa
Very high
1029 hPa
Very high
1029 hPa
Very high
Clouds
1%
0%
0%
10%
27%
0%
3%
0%
6%
Dew point
36°
40°
39°
39°
39°
40°
43°
44°
41°
UV Index
0
0
0
0
0
0
1
3
4
Air quality
62
Moderate
63
Moderate
64
Moderate
64
Moderate
65
Moderate
65
Moderate
64
Moderate
61
Moderate
53
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
0 / 5
0 / 5
0 / 5
0 / 5
0 / 5
0 / 5
0 / 5
0 / 5
0 / 5
Pollutants
Low risk
High risk
PM10
0.42 μg/ft3
0.44 μg/ft3
0.45 μg/ft3
0.46 μg/ft3
0.47 μg/ft3
0.47 μg/ft3
0.46 μg/ft3
0.40 μg/ft3
0.29 μg/ft3
PM25
0.42 μg/ft3
0.44 μg/ft3
0.45 μg/ft3
0.45 μg/ft3
0.47 μg/ft3
0.47 μg/ft3
0.45 μg/ft3
0.40 μg/ft3
0.29 μg/ft3
NO2
8.5 ppb
8.1 ppb
8.5 ppb
8.8 ppb
9.2 ppb
7.6 ppb
6.1 ppb
4.5 ppb
3.6 ppb
SO2
0.9 ppb
0.9 ppb
0.9 ppb
0.9 ppb
0.8 ppb
1 ppb
1.2 ppb
1.5 ppb
1.5 ppb
CO
0.2 ppb
0.2 ppb
0.2 ppb
0.2 ppb
0.2 ppb
0.2 ppb
0.2 ppb
0.2 ppb
0.2 ppb
O3
20.2 ppb
19.8 ppb
19.2 ppb
19 ppb
18.3 ppb
19 ppb
20.5 ppb
23.8 ppb
29 ppb