Hourly Weather in Greystone, Connecticut, United States
∙ View on Radar5 min
1 hour
6 hours
1 day
Wind
4 km/h
Calm
6 km/h
Calm
6 km/h
Calm
7 km/h
Calm
8 km/h
Calm
8 km/h
Calm
8 km/h
Light
9 km/h
Light
8 km/h
Light
Humidity
98%
Extremely humid
85%
Extremely humid
81%
Extremely humid
78%
Extremely humid
77%
Extremely humid
70%
Extremely humid
63%
Humid
56%
Comfortable
48%
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
1015 hPa
Normal
1015 hPa
Normal
1015 hPa
Normal
1015 hPa
Normal
1014 hPa
Normal
1013 hPa
Normal
1012 hPa
Normal
1012 hPa
Normal
1011 hPa
Normal
Clouds
0%
0%
0%
3%
13%
23%
100%
7%
4%
Dew point
12°
13°
14°
15°
15°
15°
15°
14°
12°
UV Index
0
0
1
2
4
6
7
6
6
Air quality
37
Good
37
Good
38
Good
38
Good
39
Good
40
Good
41
Good
42
Good
57
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
10.8 μg/m3
10.8 μg/m3
10.8 μg/m3
10.8 μg/m3
10.8 μg/m3
10.8 μg/m3
10.8 μg/m3
10.8 μg/m3
13.4 μg/m3
PM25
6.6 μg/m3
6.6 μg/m3
6.7 μg/m3
6.8 μg/m3
7 μg/m3
7.1 μg/m3
7.3 μg/m3
7.4 μg/m3
12.2 μg/m3
NO2
10.3 ppb
7.6 ppb
5 ppb
3.6 ppb
2.2 ppb
0.8 ppb
0.7 ppb
0.6 ppb
0.5 ppb
SO2
0.3 ppb
0.2 ppb
0.2 ppb
0.2 ppb
0.3 ppb
0.3 ppb
0.3 ppb
0.2 ppb
0.2 ppb
CO
0.2 ppb
0.2 ppb
0.2 ppb
0.2 ppb
0.2 ppb
0.1 ppb
0.1 ppb
0.1 ppb
0.2 ppb
O3
24.8 ppb
25.9 ppb
27.9 ppb
30.7 ppb
34 ppb
37.4 ppb
40.6 ppb
43.5 ppb
62 ppb