Hourly Weather in South Portland, Maine, United States
∙ View on Radar5 min
1 hour
6 hours
1 day
Wind
8 mph
Light
8 mph
Light
6 mph
Light
3 mph
Calm
10 mph
Breezy
8 mph
Light
11 mph
Breezy
8 mph
Light
6 mph
Light
Humidity
64%
Humid
64%
Humid
66%
Humid
75%
Extremely humid
80%
Extremely humid
83%
Extremely humid
98%
Extremely humid
93%
Extremely humid
93%
Extremely humid
Visibility
10 mi
Good
10 mi
Good
10 mi
Good
10 mi
Good
10 mi
Good
10 mi
Good
0 mi
Low
8 mi
Good
8 mi
Good
Pressure
1015 hPa
Normal
1014 hPa
Normal
1014 hPa
Normal
1013 hPa
Normal
1014 hPa
Normal
1015 hPa
Normal
1016 hPa
Normal
1016 hPa
Normal
1016 hPa
Normal
Clouds
58%
43%
3%
10%
100%
96%
100%
75%
96%
Dew point
73°
73°
73°
75°
74°
69°
71°
70°
70°
UV Index
3
1
0
0
0
0
0
0
0
Air quality
67
Moderate
67
Moderate
65
Moderate
61
Moderate
58
Moderate
55
Moderate
54
Moderate
54
Moderate
54
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
0.28 μg/ft3
0.29 μg/ft3
0.30 μg/ft3
0.31 μg/ft3
0.31 μg/ft3
0.31 μg/ft3
0.31 μg/ft3
0.31 μg/ft3
0.31 μg/ft3
PM25
0.28 μg/ft3
0.28 μg/ft3
0.29 μg/ft3
0.30 μg/ft3
0.30 μg/ft3
0.30 μg/ft3
0.30 μg/ft3
0.30 μg/ft3
0.30 μg/ft3
NO2
1.2 ppb
1.3 ppb
2.3 ppb
3.4 ppb
4.5 ppb
4.9 ppb
5.4 ppb
5.9 ppb
5.5 ppb
SO2
0.9 ppb
0.9 ppb
0.9 ppb
0.9 ppb
0.9 ppb
0.8 ppb
0.8 ppb
0.7 ppb
0.7 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
77.2 ppb
77.4 ppb
74 ppb
69 ppb
65.3 ppb
60.5 ppb
52.1 ppb
44 ppb
41 ppb