Hourly Weather in Alto, South Dakota, United States
∙ View on Radar5 min
1 hour
6 hours
1 day
Wind
15 km/h
Light
11 km/h
Light
9 km/h
Light
7 km/h
Calm
1 km/h
Calm
1 km/h
Calm
2 km/h
Calm
3 km/h
Calm
1 km/h
Calm
Humidity
75%
Extremely humid
77%
Extremely humid
80%
Extremely humid
80%
Extremely humid
77%
Extremely humid
71%
Extremely humid
66%
Humid
64%
Humid
53%
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
1006 hPa
Low
1005 hPa
Low
1006 hPa
Low
1006 hPa
Low
1006 hPa
Low
1006 hPa
Low
1006 hPa
Low
1007 hPa
Low
1008 hPa
Low
Clouds
0%
0%
1%
1%
1%
3%
34%
49%
100%
Dew point
22°
22°
22°
21°
21°
19°
18°
18°
17°
UV Index
0
0
0
0
0
0
0
1
2
Air quality
41
Good
46
Good
49
Good
53
Moderate
56
Moderate
59
Moderate
62
Moderate
65
Moderate
42
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
2 / 5
2 / 5
3 / 5
3 / 5
3 / 5
3 / 5
2 / 5
3 / 5
3 / 5
Pollutants
Low risk
High risk
PM10
10.6 μg/m3
9.8 μg/m3
9.1 μg/m3
8.5 μg/m3
12.9 μg/m3
12.9 μg/m3
12.9 μg/m3
12.9 μg/m3
7.7 μg/m3
PM25
7.3 μg/m3
7.8 μg/m3
8.8 μg/m3
10.2 μg/m3
11.8 μg/m3
13.5 μg/m3
15.1 μg/m3
16.5 μg/m3
7.4 μg/m3
NO2
2.3 ppb
2.5 ppb
2.8 ppb
3 ppb
3.1 ppb
3.4 ppb
3.5 ppb
2.9 ppb
2.3 ppb
SO2
0.1 ppb
0.1 ppb
0.1 ppb
0.1 ppb
0.1 ppb
0.1 ppb
0.1 ppb
0.1 ppb
0.1 ppb
CO
0.2 ppb
0.2 ppb
0.2 ppb
0.2 ppb
0.1 ppb
0.1 ppb
0.1 ppb
0.1 ppb
0.1 ppb
O3
31.7 ppb
49.6 ppb
49.5 ppb
49.4 ppb
49.3 ppb
49.1 ppb
49 ppb
48.9 ppb
24 ppb