Hourly Weather in Portland, Maine, United States
∙ View on Radar5 min
1 hour
6 hours
1 day
Wind
10 km/h
Light
19 km/h
Breezy
19 km/h
Breezy
16 km/h
Breezy
12 km/h
Light
14 km/h
Light
11 km/h
Light
8 km/h
Calm
6 km/h
Calm
Humidity
62%
Humid
57%
Comfortable
68%
Humid
68%
Humid
69%
Humid
55%
Comfortable
53%
Comfortable
50%
Comfortable
46%
Comfortable
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
1021 hPa
High
1022 hPa
High
1022 hPa
High
1022 hPa
High
1021 hPa
High
1021 hPa
High
1021 hPa
High
1021 hPa
High
Clouds
25%
67%
100%
100%
100%
13%
18%
21%
18%
Dew point
12°
13°
14°
14°
14°
13°
13°
12°
12°
UV Index
0
1
2
4
5
5
4
3
2
Air quality
31
Good
34
Good
37
Good
40
Good
43
Good
45
Good
36
Good
38
Good
38
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
8.5 μg/m3
8.4 μg/m3
8.3 μg/m3
8.1 μg/m3
7.9 μg/m3
7.7 μg/m3
2.5 μg/m3
3.2 μg/m3
3.8 μg/m3
PM25
5.6 μg/m3
6.1 μg/m3
6.6 μg/m3
7.1 μg/m3
7.6 μg/m3
8 μg/m3
2.1 μg/m3
2.6 μg/m3
3 μg/m3
NO2
1.9 ppb
1.5 ppb
1.1 ppb
0.8 ppb
0.6 ppb
0.6 ppb
0.5 ppb
0.6 ppb
0.7 ppb
SO2
0.3 ppb
0.3 ppb
0.3 ppb
0.3 ppb
0.3 ppb
0.3 ppb
0.2 ppb
0.2 ppb
0.2 ppb
CO
0.2 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
23.5 ppb
24.3 ppb
25.8 ppb
27.9 ppb
30.6 ppb
33.6 ppb
39.2 ppb
40.5 ppb
41.4 ppb