Hourly Weather in Karen Knolls, Maryland, United States
∙ View on Radar5 min
1 hour
6 hours
1 day
Wind
4 mph
Calm
4 mph
Calm
4 mph
Calm
4 mph
Calm
4 mph
Calm
4 mph
Calm
4 mph
Calm
4 mph
Calm
4 mph
Calm
Humidity
52%
Comfortable
53%
Comfortable
54%
Comfortable
53%
Comfortable
54%
Comfortable
54%
Comfortable
56%
Comfortable
55%
Comfortable
48%
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
1018 hPa
High
1018 hPa
High
1018 hPa
High
1018 hPa
High
1018 hPa
High
1018 hPa
High
1018 hPa
High
1018 hPa
High
1018 hPa
High
Clouds
100%
100%
100%
100%
18%
95%
18%
100%
100%
Dew point
23°
22°
22°
21°
21°
20°
20°
20°
21°
UV Index
0
0
0
0
0
0
0
0
0
Air quality
52
Moderate
51
Moderate
53
Moderate
54
Moderate
52
Moderate
54
Moderate
55
Moderate
58
Moderate
58
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
0.36 μg/ft3
0.35 μg/ft3
0.35 μg/ft3
0.36 μg/ft3
0.37 μg/ft3
0.39 μg/ft3
0.44 μg/ft3
0.51 μg/ft3
0.45 μg/ft3
PM25
0.35 μg/ft3
0.34 μg/ft3
0.34 μg/ft3
0.35 μg/ft3
0.36 μg/ft3
0.38 μg/ft3
0.43 μg/ft3
0.50 μg/ft3
0.45 μg/ft3
NO2
13.53 ppb
12.65 ppb
11.76 ppb
10.87 ppb
11.64 ppb
12.41 ppb
13.19 ppb
10.71 ppb
8.24 ppb
SO2
1.58 ppb
1.5 ppb
1.41 ppb
1.33 ppb
1.38 ppb
1.43 ppb
1.47 ppb
1.8 ppb
2.12 ppb
CO
0.27 ppb
0.26 ppb
0.25 ppb
0.24 ppb
0.25 ppb
0.26 ppb
0.27 ppb
0.25 ppb
0.24 ppb
O3
10.8 ppb
10 ppb
9.2 ppb
8.4 ppb
6.5 ppb
4.6 ppb
2.7 ppb
8.1 ppb
13.5 ppb