Hourly Weather in Preston, Maryland, United States
∙ View on Radar5 min
1 hour
6 hours
1 day
Wind
10 km/h
Light
11 km/h
Light
10 km/h
Light
7 km/h
Calm
9 km/h
Light
6 km/h
Calm
5 km/h
Calm
5 km/h
Calm
5 km/h
Calm
Humidity
55%
Comfortable
60%
Humid
69%
Humid
75%
Extremely humid
81%
Extremely humid
87%
Extremely humid
89%
Extremely humid
90%
Extremely humid
91%
Extremely humid
Visibility
16 km
Good
16 km
Good
16 km
Good
16 km
Good
16 km
Good
15 km
Good
14 km
Good
14 km
Good
14 km
Good
Pressure
1016 hPa
Normal
1016 hPa
Normal
1016 hPa
Normal
1016 hPa
Normal
1016 hPa
Normal
1015 hPa
Normal
1015 hPa
Normal
1015 hPa
Normal
1015 hPa
Normal
Clouds
8%
6%
2%
0%
1%
0%
1%
63%
0%
Dew point
16°
17°
17°
18°
18°
18°
18°
18°
18°
UV Index
1
0
0
0
0
0
0
0
0
Air quality
40
Good
39
Good
39
Good
38
Good
37
Good
36
Good
55
Moderate
55
Moderate
55
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
5.4 μg/m3
5.4 μg/m3
5.4 μg/m3
5.4 μg/m3
5.4 μg/m3
5.4 μg/m3
14.8 μg/m3
14.6 μg/m3
14.5 μg/m3
PM25
1.5 μg/m3
1.8 μg/m3
2.1 μg/m3
2.4 μg/m3
2.7 μg/m3
3 μg/m3
11.1 μg/m3
11 μg/m3
11 μg/m3
NO2
1 ppb
1.5 ppb
2 ppb
2.4 ppb
2.8 ppb
3.2 ppb
3.4 ppb
3.6 ppb
3.9 ppb
SO2
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
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
43.3 ppb
42.5 ppb
41.5 ppb
40.5 ppb
39.6 ppb
38.7 ppb
30.1 ppb
27.7 ppb
25.8 ppb