Hourly Weather in Waltham, Maine, United States
∙ View on Radar5 min
1 hour
6 hours
1 day
Wind
9 mph
Light
9 mph
Light
9 mph
Light
11 mph
Breezy
11 mph
Breezy
11 mph
Breezy
12 mph
Breezy
11 mph
Breezy
11 mph
Breezy
Humidity
79%
Extremely humid
79%
Extremely humid
73%
Extremely humid
67%
Humid
61%
Humid
55%
Comfortable
49%
Comfortable
44%
Dry
39%
Dry
Visibility
10 mi
Good
10 mi
Good
10 mi
Good
10 mi
Good
10 mi
Good
10 mi
Good
10 mi
Good
10 mi
Good
10 mi
Good
Pressure
1010 hPa
Normal
1011 hPa
Normal
1012 hPa
Normal
1012 hPa
Normal
1012 hPa
Normal
1013 hPa
Normal
1013 hPa
Normal
1012 hPa
Normal
1012 hPa
Normal
Clouds
0%
0%
0%
0%
1%
1%
2%
69%
8%
Dew point
34°
33°
33°
33°
32°
31°
30°
28°
27°
UV Index
0
0
1
1
2
3
4
3
2
Air quality
52
Moderate
52
Moderate
52
Moderate
47
Good
42
Good
40
Good
41
Good
42
Good
43
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
0.27 μg/ft3
0.28 μg/ft3
0.28 μg/ft3
0.24 μg/ft3
0.21 μg/ft3
0.20 μg/ft3
0.20 μg/ft3
0.21 μg/ft3
0.22 μg/ft3
PM25
0.27 μg/ft3
0.27 μg/ft3
0.27 μg/ft3
0.24 μg/ft3
0.21 μg/ft3
0.20 μg/ft3
0.20 μg/ft3
0.21 μg/ft3
0.22 μg/ft3
NO2
16.7 ppb
17.8 ppb
15.3 ppb
12.8 ppb
10.3 ppb
10.4 ppb
10.6 ppb
10.7 ppb
11.9 ppb
SO2
1.9 ppb
1.8 ppb
1.6 ppb
1.5 ppb
1.4 ppb
1.4 ppb
1.3 ppb
1.3 ppb
1.4 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
22.3 ppb
21.9 ppb
23.6 ppb
26.3 ppb
29.5 ppb
30.9 ppb
32.8 ppb
34.9 ppb
35.7 ppb