Hourly Weather in Greylock, Massachusetts, United States
∙ View on Radar5 min
1 hour
6 hours
1 day
Wind
0 km/h
Calm
1 km/h
Calm
3 km/h
Calm
2 km/h
Calm
2 km/h
Calm
4 km/h
Calm
7 km/h
Calm
7 km/h
Calm
8 km/h
Light
Humidity
72%
Extremely humid
61%
Humid
52%
Comfortable
42%
Dry
38%
Dry
37%
Dry
37%
Dry
36%
Dry
38%
Dry
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
1020 hPa
High
1019 hPa
High
1019 hPa
High
1018 hPa
High
1018 hPa
Normal
1017 hPa
Normal
1017 hPa
Normal
Clouds
0%
0%
0%
0%
1%
3%
2%
1%
2%
Dew point
11°
11°
11°
10°
9°
10°
10°
10°
11°
UV Index
1
3
4
6
7
7
6
5
4
Air quality
36
Good
38
Good
40
Good
43
Good
45
Good
48
Good
50
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
9.7 μg/m3
9.7 μg/m3
9.7 μg/m3
9.7 μg/m3
9.7 μg/m3
9.7 μg/m3
9.7 μg/m3
8.4 μg/m3
8 μg/m3
PM25
6.4 μg/m3
6.7 μg/m3
7.1 μg/m3
7.6 μg/m3
8 μg/m3
8.5 μg/m3
8.9 μg/m3
7.8 μg/m3
7.5 μg/m3
NO2
1.9 ppb
1.4 ppb
0.9 ppb
0.4 ppb
0.4 ppb
0.3 ppb
0.3 ppb
0.3 ppb
0.3 ppb
SO2
0.3 ppb
0.3 ppb
0.4 ppb
0.4 ppb
0.3 ppb
0.3 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
0.1 ppb
0.2 ppb
0.2 ppb
O3
10.2 ppb
13.3 ppb
17.5 ppb
22.4 ppb
27.5 ppb
32.4 ppb
36.6 ppb
59.1 ppb
58.8 ppb