Hourly Weather in Needham, Massachusetts, United States
∙ View on Radar5 min
1 hour
6 hours
1 day
Wind
6 mph
Light
6 mph
Light
6 mph
Light
6 mph
Light
6 mph
Light
6 mph
Light
6 mph
Light
7 mph
Light
8 mph
Light
Humidity
79%
Extremely humid
79%
Extremely humid
79%
Extremely humid
79%
Extremely humid
76%
Extremely humid
71%
Extremely humid
67%
Humid
63%
Humid
58%
Comfortable
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
1016 hPa
Normal
1016 hPa
Normal
1015 hPa
Normal
1015 hPa
Normal
1015 hPa
Normal
1015 hPa
Normal
1016 hPa
Normal
1015 hPa
Normal
1015 hPa
Normal
Clouds
74%
89%
82%
68%
98%
100%
100%
100%
22%
Dew point
48°
48°
48°
48°
48°
50°
51°
52°
53°
UV Index
0
0
0
0
0
1
2
4
5
Air quality
53
Moderate
51
Moderate
51
Moderate
50
Moderate
50
Moderate
51
Moderate
52
Moderate
52
Moderate
52
Moderate
Pollen index
Tree
5 / 5
5 / 5
5 / 5
3 / 5
3 / 5
2 / 5
2 / 5
2 / 5
5 / 5
Weed
0 / 5
0 / 5
0 / 5
0 / 5
0 / 5
0 / 5
0 / 5
0 / 5
0 / 5
Grass
1 / 5
1 / 5
1 / 5
1 / 5
0 / 5
0 / 5
0 / 5
0 / 5
1 / 5
Pollutants
Low risk
High risk
PM10
0.51 μg/ft3
0.49 μg/ft3
0.48 μg/ft3
0.48 μg/ft3
0.49 μg/ft3
0.53 μg/ft3
0.56 μg/ft3
0.56 μg/ft3
0.53 μg/ft3
PM25
0.35 μg/ft3
0.34 μg/ft3
0.34 μg/ft3
0.34 μg/ft3
0.34 μg/ft3
0.37 μg/ft3
0.39 μg/ft3
0.39 μg/ft3
0.37 μg/ft3
NO2
3.57 ppb
3.49 ppb
3.42 ppb
3.06 ppb
2.71 ppb
2.35 ppb
1.86 ppb
1.36 ppb
0.87 ppb
SO2
1.77 ppb
1.76 ppb
1.74 ppb
1.61 ppb
1.47 ppb
1.33 ppb
1.26 ppb
1.19 ppb
1.12 ppb
CO
0.17 ppb
0.17 ppb
0.18 ppb
0.18 ppb
0.18 ppb
0.18 ppb
0.17 ppb
0.17 ppb
0.16 ppb
O3
36.19 ppb
35.05 ppb
33.92 ppb
33.81 ppb
33.7 ppb
33.59 ppb
39.13 ppb
44.67 ppb
50.21 ppb