Hourly Weather in Portland, Maine, United States
∙ View on Radar5 min
1 hour
6 hours
1 day
Wind
3 km/h
Calm
14 km/h
Light
15 km/h
Light
14 km/h
Light
14 km/h
Light
13 km/h
Light
14 km/h
Light
14 km/h
Light
10 km/h
Light
Humidity
41%
Dry
42%
Dry
42%
Dry
43%
Dry
41%
Dry
40%
Dry
42%
Dry
46%
Comfortable
54%
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
1022 hPa
High
1022 hPa
High
1022 hPa
High
1022 hPa
High
1022 hPa
High
1022 hPa
High
1021 hPa
High
1022 hPa
High
1021 hPa
High
Clouds
10%
12%
12%
68%
97%
75%
99%
4%
0%
Dew point
11°
11°
11°
12°
11°
10°
10°
10°
11°
UV Index
7
7
6
5
3
2
1
0
0
Air quality
56
Moderate
56
Moderate
55
Moderate
55
Moderate
55
Moderate
54
Moderate
54
Moderate
61
Moderate
60
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
29.1 μg/m3
29.1 μg/m3
29.1 μg/m3
29.1 μg/m3
29.1 μg/m3
29.1 μg/m3
29.1 μg/m3
17.5 μg/m3
17 μg/m3
PM25
11.7 μg/m3
11.6 μg/m3
11.4 μg/m3
11.3 μg/m3
11.1 μg/m3
10.9 μg/m3
10.8 μg/m3
14.5 μg/m3
14 μg/m3
NO2
0.9 ppb
0.8 ppb
0.8 ppb
0.9 ppb
0.9 ppb
1 ppb
1.3 ppb
1.7 ppb
2 ppb
SO2
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
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
11.8 ppb
13.6 ppb
16.2 ppb
19.2 ppb
22.4 ppb
25.3 ppb
27.9 ppb
61.4 ppb
57.9 ppb