Hourly Weather in Saint Denis, Maryland, United States
∙ View on Radar5 min
1 hour
6 hours
1 day
Wind
13 mph
Breezy
11 mph
Breezy
12 mph
Breezy
11 mph
Breezy
11 mph
Breezy
11 mph
Breezy
12 mph
Breezy
12 mph
Breezy
13 mph
Breezy
Humidity
93%
Extremely humid
80%
Extremely humid
78%
Extremely humid
76%
Extremely humid
77%
Extremely humid
78%
Extremely humid
79%
Extremely humid
82%
Extremely humid
81%
Extremely humid
Visibility
3 mi
Low
6 mi
Fair
9 mi
Good
9 mi
Good
9 mi
Good
8 mi
Good
9 mi
Good
9 mi
Good
9 mi
Good
Pressure
1016 hPa
Normal
1017 hPa
Normal
1018 hPa
High
1018 hPa
High
1019 hPa
High
1020 hPa
High
1021 hPa
High
1022 hPa
High
1023 hPa
High
Clouds
100%
100%
100%
100%
100%
100%
100%
100%
100%
Dew point
32°
30°
29°
29°
29°
30°
29°
30°
29°
UV Index
0
0
0
0
0
0
0
0
0
Air quality
49
Good
49
Good
50
Moderate
51
Moderate
51
Moderate
52
Moderate
52
Moderate
12
Good
14
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
0.37 μg/ft3
0.37 μg/ft3
0.37 μg/ft3
0.37 μg/ft3
0.37 μg/ft3
0.37 μg/ft3
0.37 μg/ft3
0.08 μg/ft3
0.09 μg/ft3
PM25
0.33 μg/ft3
0.33 μg/ft3
0.33 μg/ft3
0.34 μg/ft3
0.35 μg/ft3
0.35 μg/ft3
0.36 μg/ft3
0.35 μg/ft3
0.39 μg/ft3
NO2
6.44 ppb
5.1 ppb
5.73 ppb
6.3 ppb
6.93 ppb
7.39 ppb
7.86 ppb
9 ppb
7.7 ppb
SO2
1.46 ppb
1.2 ppb
1.67 ppb
2.08 ppb
2.55 ppb
2.39 ppb
2.21 ppb
2.2 ppb
1.8 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
12.3 ppb
13.2 ppb
14.4 ppb
15.9 ppb
17.4 ppb
18.8 ppb
20 ppb
11.8 ppb
12.5 ppb