Extreme Heat Warning — Corson, SD, Campbell, SD, McPherson, SD, Walworth, SD, Edmunds, SD, Dewey, SD, Potter, SD, Faulk, SD, Stanley, SD, Sully, SD, Hughes, SD, Hyde, SD, Hand, SD, Jones, SD, Lyman, SD, Buffalo, SD 9:00 PM Heat Advisory — Brown, SD, Marshall, SD, Roberts, SD, Day, SD, Spink, SD, Clark, SD, Codington, SD, Grant, SD, Hamlin, SD, Deuel, SD, Corson, SD, Campbell, SD, McPherson, SD, Walworth, SD, Edmunds, SD, Dewey, SD, Potter, SD, Faulk, SD, Stanley, SD, Sully, SD, Hughes, SD, Hyde, SD, Hand, SD, Jones, SD, Lyman, SD, Buffalo, SD 9:00 PM

Corson County, South Dakota, United States

Last updated: 6:14 AM CDT  ·  Refresh
24°C
Feels like 24°
Rain
▲ 38°  /  ▼ 21°
Wind
7 mph SSE
Humidity
68%
Dew Point
18°
Pressure
27.75 inHg
Visibility
10 mi
UV Index
0.0
Cloud Cover
58%
Sunrise
5:21 AM
Sunset
8:20 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Corson County is currently rain at 24°C. Dry conditions are expected through the next 24 hours. Atmospheric instability is elevated (CAPE up to 1003 J/kg) — isolated convective development possible. Sunrise: 5:21AM · Sunset: 8:20PM.

Alerts

Extreme Heat Warning
Corson, SD, Campbell, SD, McPherson, SD, Walworth, SD, Edmunds, SD, Dewey, SD, Potter, SD, Faulk, SD, Stanley, SD, Sully, SD, Hughes, SD, Hyde, SD, Hand, SD, Jones, SD, Lyman, SD, Buffalo, SD
Expires 9:00 PM
Heat Advisory
Brown, SD, Marshall, SD, Roberts, SD, Day, SD, Spink, SD, Clark, SD, Codington, SD, Grant, SD, Hamlin, SD, Deuel, SD, Corson, SD, Campbell, SD, McPherson, SD, Walworth, SD, Edmunds, SD, Dewey, SD, Potter, SD, Faulk, SD, Stanley, SD, Sully, SD, Hughes, SD, Hyde, SD, Hand, SD, Jones, SD, Lyman, SD, Buffalo, SD
Expires 9:00 PM
55 AQI · Moderate Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
24°
45%
6 AM
21°
45%
7 AM
23°
27%
8 AM
25°
20%
9 AM
28°
20%
10 AM
30°
14%
11 AM
32°
14%
12 PM
34°
3%
1 PM
36°
3%
2 PM
37°
3%
3 PM
37°
3%
4 PM
37°
3%
5 PM
38°
3%
6 PM
38°
3%
7 PM
35°
3%
8 PM
32°
3%
9 PM
28°
3%
10 PM
27°
3%
11 PM
26°
3%
12 AM
25°
3%
1 AM
24°
5%
2 AM
24°
5%
3 AM
23°
5%
4 AM
23°
5%
7-Day Forecast
Today
38° 21°
Clear with a 45% chance of rain.
Mon
38° 21°
Mostly Cloudy with a 35% chance of rain.
Tue
37° 18°
Clear.
Wed
37° 21°
Clear with a 75% chance of rain.
Thu
33° 19°
Rain, 64% chance.
Fri
33° 16°
Partly Cloudy with a 25% chance of rain.
Sat
32° 17°
Mostly Clear.
TimeTempConditionsPrecipWindHumidity
Now 24° Rain 45% 7 mph SSE 68%
6 AM 21° Partly Cloudy 45% 8 mph SE 65%
7 AM 23° Clear 27% 5 mph S 60%
8 AM 25° Clear 20% 7 mph SSW 53%
9 AM 28° Clear 20% 8 mph WSW 46%
10 AM 30° Mostly Clear 14% 7 mph NW 40%
11 AM 32° Mostly Clear 14% 8 mph NNW 33%
12 PM 34° Clear 3% 9 mph NNW 28%
1 PM 36° Clear 3% 9 mph N 26%
2 PM 37° Clear 3% 8 mph N 23%
3 PM 37° Clear 3% 8 mph NNW 22%
4 PM 37° Clear 3% 9 mph NNW 21%
5 PM 38° Clear 3% 10 mph N 21%
6 PM 38° Clear 3% 10 mph N 22%
7 PM 35° Clear 3% 9 mph N 24%
8 PM 32° Clear 3% 8 mph NNE 27%
9 PM 28° Clear 3% 7 mph NNE 29%
10 PM 27° Clear 3% 6 mph NNE 30%
11 PM 26° Clear 3% 5 mph NNE 30%
12 AM 25° Clear 3% 5 mph NNE 31%
1 AM 24° Clear 5% 5 mph NNE 33%
2 AM 24° Mostly Clear 5% 5 mph NNE 34%
3 AM 23° Mostly Clear 5% 5 mph NNE 36%
4 AM 23° Mostly Clear 5% 4 mph NNE 38%
15-Day Forecast
Today
7/26
Clear
45%
21°
38°
Mon
7/27
Mostly Cloudy
35%
21°
38°
Tue
7/28
Clear
13%
18°
37°
Wed
7/29
Clear
75%
21°
37°
Thu
7/30
Rain
64%
19°
33°
Fri
7/31
Partly Cloudy
25%
16°
33°
Sat
8/1
Mostly Clear
8%
17°
32°
Sun
8/2
Mostly Clear
34%
19°
37°
Mon
8/3
Partly Cloudy
15%
19°
34°
Tue
8/4
Mostly Clear
19%
14°
28°
Wed
8/5
Clear
25%
16°
29°
Thu
8/6
Clear
25%
18°
29°
Fri
8/7
Clear
25%
18°
32°
Sat
8/8
Drizzle
60%
19°
33°
Sun
8/9
Clear
60%
19°
31°
55
Moderate
U.S. Air Quality Index · Dominant: PM2.5
50 100 150 200

Air quality is acceptable. Unusually sensitive people should consider limiting prolonged outdoor exertion.

Pollutant Breakdown · Today
PM2.5
Fine particulate matter
Dominant
55 AQI 11.4 µg/m³
O3
Ground-level ozone
42 AQI 45 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Today 55 Moderate 42 55
Mon 53 Moderate 41 53
Tue 57 Moderate 48 57
About the Air Quality Index
0–50 Good
51–100 Moderate
101–150 Unhealthy for Sensitive Groups
151–200 Unhealthy
201–300 Very Unhealthy
301–500 Hazardous

The U.S. AQI runs 0–500. The overall value equals the highest individual pollutant sub-index, and the dominant pollutant is the one driving it. PM2.5 (fine particles) is reported in µg/m³ and ozone (O3) in ppb. Forecast source: NWS NAQFC.

1000850700500400300250200150100 -40-30-20-10010203040 0.41247101624 LCLLFCEL0°C Temperature (°C) Pressure (hPa)
Temp Dewpoint Parcel (SB) CAPE CIN Dry adiabat Moist adiabat Mixing ratio
RAP
Valid Sun Jul 26, 09:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 50 60 70 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE109 J/kg
MLCAPE65 J/kg
MUCAPE305 J/kg
SBCIN-778 J/kg
MLCIN0 J/kg
Lifted Index-1.4
Kinematics
0–6 km Shear24 kt
0–1 km Shear14 kt
Eff. Shear21 kt
0–1 km SRH94
0–3 km SRH25
Eff. SRH-50
Storm Motion208° @ 26 kt
0–1 km EHI0.1
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index35.0
Thermo & Levels
PWAT1.66 in
0–3 km LR4.5 °C/km
700–500 LR7.5 °C/km
Total Totals48.6
LCL859 hPa
LFC592 hPa
EL253 hPa
Freezing Lvl14,052 ft