Hourly Weather in Gaithersburg, Maryland, United States
∙ View on Radar5 min
1 hour
6 hours
1 day
Wind
5 km/h
Calm
3 km/h
Calm
5 km/h
Calm
7 km/h
Calm
8 km/h
Calm
6 km/h
Calm
6 km/h
Calm
5 km/h
Calm
5 km/h
Calm
Humidity
85%
Extremely humid
80%
Extremely humid
70%
Extremely humid
72%
Extremely humid
67%
Humid
72%
Extremely humid
70%
Extremely humid
71%
Extremely humid
65%
Humid
Visibility
16 km
Good
16 km
Good
16 km
Good
16 km
Good
16 km
Good
16 km
Good
16 km
Good
16 km
Good
16 km
Good
Pressure
1020 hPa
High
1020 hPa
High
1019 hPa
High
1020 hPa
High
1019 hPa
High
1018 hPa
High
1018 hPa
High
1017 hPa
Normal
1017 hPa
Normal
Clouds
37%
9%
21%
89%
91%
100%
100%
100%
64%
Dew point
17°
17°
16°
17°
16°
17°
17°
18°
18°
UV Index
0
1
2
4
6
8
8
8
6
Air quality
24
Good
27
Good
30
Good
31
Good
34
Good
37
Good
40
Good
62
Moderate
62
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
5.4 μg/m3
19.5 μg/m3
19.3 μg/m3
PM25
2.3 μg/m3
2.6 μg/m3
3 μg/m3
3.2 μg/m3
3.5 μg/m3
3.9 μg/m3
4.2 μg/m3
15 μg/m3
14.9 μg/m3
NO2
6.3 ppb
5.9 ppb
4.3 ppb
3.2 ppb
1.6 ppb
1.4 ppb
1 ppb
0.8 ppb
0.8 ppb
SO2
0.7 ppb
0.7 ppb
0.6 ppb
0.6 ppb
0.5 ppb
0.5 ppb
0.5 ppb
0.5 ppb
0.5 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
26.1 ppb
28.5 ppb
31.9 ppb
33.6 ppb
36.8 ppb
39.9 ppb
42.6 ppb
62 ppb
64.7 ppb