Hourly Weather in Alta, Illinois, United States
∙ View on Radar5 min
1 hour
6 hours
1 day
Wind
11 km/h
Light
11 km/h
Light
12 km/h
Light
13 km/h
Light
13 km/h
Light
12 km/h
Light
6 km/h
Calm
2 km/h
Calm
1 km/h
Calm
Humidity
87%
Extremely humid
89%
Extremely humid
86%
Extremely humid
84%
Extremely humid
89%
Extremely humid
87%
Extremely humid
85%
Extremely humid
76%
Extremely humid
71%
Extremely humid
Visibility
15 km
Good
14 km
Good
15 km
Good
16 km
Good
14 km
Good
14 km
Good
15 km
Good
16 km
Good
16 km
Good
Pressure
1015 hPa
Normal
1015 hPa
Normal
1015 hPa
Normal
1015 hPa
Normal
1015 hPa
Normal
1015 hPa
Normal
1015 hPa
Normal
1014 hPa
Normal
1014 hPa
Normal
Clouds
100%
100%
100%
100%
100%
100%
87%
59%
82%
Dew point
17°
18°
18°
18°
19°
19°
20°
20°
21°
UV Index
0
0
0
1
1
1
2
2
3
Air quality
45
Good
45
Good
45
Good
54
Moderate
56
Moderate
58
Moderate
60
Moderate
36
Good
34
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
18.3 μg/m3
18.3 μg/m3
18.3 μg/m3
18.3 μg/m3
18.3 μg/m3
18.3 μg/m3
18.3 μg/m3
6.7 μg/m3
6.4 μg/m3
PM25
8 μg/m3
8.1 μg/m3
8.1 μg/m3
10.8 μg/m3
11.8 μg/m3
12.8 μg/m3
13.7 μg/m3
6.4 μg/m3
6 μg/m3
NO2
7 ppb
7.1 ppb
6.2 ppb
4.8 ppb
4.4 ppb
3.8 ppb
3.2 ppb
2.6 ppb
2.3 ppb
SO2
1.1 ppb
1.1 ppb
1.3 ppb
0.9 ppb
0.9 ppb
0.9 ppb
0.9 ppb
0.9 ppb
0.9 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
33.7 ppb
34.3 ppb
35.1 ppb
37.8 ppb
39.4 ppb
41 ppb
42.3 ppb
30.2 ppb
32.5 ppb