Hourly Weather in Erwin, South Dakota, United States
∙ View on Radar5 min
1 hour
6 hours
1 day
Wind
8 mph
Light
7 mph
Light
8 mph
Light
8 mph
Light
8 mph
Light
7 mph
Light
6 mph
Light
6 mph
Light
10 mph
Breezy
Humidity
77%
Extremely humid
79%
Extremely humid
75%
Extremely humid
70%
Extremely humid
64%
Humid
58%
Comfortable
51%
Comfortable
45%
Comfortable
48%
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
6 mi
Good
Pressure
1013 hPa
Normal
1014 hPa
Normal
1014 hPa
Normal
1014 hPa
Normal
1014 hPa
Normal
1014 hPa
Normal
1014 hPa
Normal
1013 hPa
Normal
1012 hPa
Normal
Clouds
0%
0%
0%
0%
0%
0%
17%
28%
25%
Dew point
67°
67°
67°
68°
69°
69°
67°
65°
69°
UV Index
0
0
1
2
4
7
9
10
10
Air quality
47
Good
48
Good
48
Good
49
Good
51
Moderate
52
Moderate
52
Moderate
52
Moderate
52
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
3 / 5
4 / 5
4 / 5
4 / 5
4 / 5
4 / 5
4 / 5
4 / 5
4 / 5
Pollutants
Low risk
High risk
PM10
0.35 μg/ft3
0.35 μg/ft3
0.35 μg/ft3
0.38 μg/ft3
0.40 μg/ft3
0.42 μg/ft3
0.43 μg/ft3
0.43 μg/ft3
0.42 μg/ft3
PM25
0.24 μg/ft3
0.24 μg/ft3
0.24 μg/ft3
0.25 μg/ft3
0.26 μg/ft3
0.27 μg/ft3
0.27 μg/ft3
0.28 μg/ft3
0.27 μg/ft3
NO2
3.3 ppb
3.3 ppb
2.5 ppb
1.6 ppb
0.8 ppb
0.6 ppb
0.4 ppb
0.3 ppb
0.3 ppb
SO2
0.3 ppb
0.3 ppb
0.3 ppb
0.3 ppb
0.3 ppb
0.3 ppb
0.3 ppb
0.3 ppb
0.3 ppb
CO
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
O3
18.8 ppb
18.2 ppb
20 ppb
22.5 ppb
26.9 ppb
31 ppb
34.2 ppb
37.2 ppb
38.8 ppb