Excessive Heat Warning — Corson, SD, Campbell, SD, Walworth, SD, Dewey, SD, Potter, SD, McPherson, SD, Brown, SD, Marshall, SD, Roberts, SD, Edmunds, SD, Day, SD, Faulk, SD, Spink, SD, Grant, SD, Stanley, SD, Sully, SD, Hughes, SD, Hyde, SD, Hand, SD, Jones, SD, Lyman, SD, Buffalo, SD 10:00 PM Heat Advisory — McPherson, SD, Brown, SD, Marshall, SD, Roberts, SD, Edmunds, SD, Day, SD, Faulk, SD, Spink, SD, Grant, SD, Corson, SD, Campbell, SD, Walworth, SD, Dewey, SD, Potter, SD, Stanley, SD, Sully, SD, Hughes, SD, Hyde, SD, Hand, SD, Jones, SD, Lyman, SD, Buffalo, SD 10:00 PM

Corson County, South Dakota, United States

Last updated: 5:06 PM CDT  ·  Refresh
36°C
Feels like 34°
Clear
▲ 36°  /  ▼ 19°
Wind
14 mph SSE
Humidity
22%
Dew Point
12°
Pressure
27.91 inHg
Visibility
10 mi
UV Index
7.7
Cloud Cover
0%
Sunrise
5:09 AM
Sunset
8:30 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Corson County is currently clear at 36°C. Dry conditions are expected through the next 24 hours. Sunrise: 5:09AM · Sunset: 8:30PM.

Alerts

Excessive Heat Warning
Corson, SD, Campbell, SD, Walworth, SD, Dewey, SD, Potter, SD, McPherson, SD, Brown, SD, Marshall, SD, Roberts, SD, Edmunds, SD, Day, SD, Faulk, SD, Spink, SD, Grant, SD, Stanley, SD, Sully, SD, Hughes, SD, Hyde, SD, Hand, SD, Jones, SD, Lyman, SD, Buffalo, SD
Expires 10:00 PM
Heat Advisory
McPherson, SD, Brown, SD, Marshall, SD, Roberts, SD, Edmunds, SD, Day, SD, Faulk, SD, Spink, SD, Grant, SD, Corson, SD, Campbell, SD, Walworth, SD, Dewey, SD, Potter, SD, Stanley, SD, Sully, SD, Hughes, SD, Hyde, SD, Hand, SD, Jones, SD, Lyman, SD, Buffalo, SD
Expires 10:00 PM
46 AQI · Good Dominant: O3 Air Quality
Hourly Forecast · Next 24 Hours
Now
36°
3%
5 PM
36°
8%
6 PM
36°
8%
7 PM
34°
8%
8 PM
32°
8%
9 PM
28°
8%
10 PM
27°
8%
11 PM
26°
3%
12 AM
24°
3%
1 AM
23°
3%
2 AM
22°
3%
3 AM
22°
3%
4 AM
21°
3%
5 AM
19°
3%
6 AM
19°
3%
7 AM
22°
3%
8 AM
24°
3%
9 AM
27°
3%
10 AM
28°
3%
11 AM
32°
3%
12 PM
33°
3%
1 PM
35°
3%
2 PM
36°
10%
3 PM
38°
14%
7-Day Forecast
Today
36° 19°
Clear.
Thu
39° 19°
Mostly Clear.
Fri
35° 21°
Partly Cloudy.
Sat
34° 19°
Partly Cloudy.
Sun
39° 19°
Mostly Clear.
Mon
35° 19°
Clear.
Tue
31° 18°
Partly Cloudy.
TimeTempConditionsPrecipWindHumidity
Now 36° Clear 3% 14 mph SSE 22%
5 PM 36° Clear 8% 14 mph SSE 21%
6 PM 36° Clear 8% 13 mph SE 23%
7 PM 34° Clear 8% 13 mph SE 26%
8 PM 32° Clear 8% 12 mph SE 31%
9 PM 28° Clear 8% 10 mph SE 36%
10 PM 27° Clear 8% 10 mph ESE 40%
11 PM 26° Clear 3% 11 mph SE 43%
12 AM 24° Clear 3% 11 mph SE 47%
1 AM 23° Clear 3% 10 mph SE 50%
2 AM 22° Clear 3% 9 mph SE 54%
3 AM 22° Clear 3% 8 mph SE 58%
4 AM 21° Clear 3% 7 mph SE 60%
5 AM 19° Clear 3% 7 mph SE 62%
6 AM 19° Clear 3% 6 mph SE 63%
7 AM 22° Mostly Clear 3% 8 mph SE 56%
8 AM 24° Mostly Clear 3% 8 mph SSE 49%
9 AM 27° Mostly Clear 3% 9 mph SSE 42%
10 AM 28° Mostly Clear 3% 9 mph SSE 37%
11 AM 32° Mostly Clear 3% 10 mph SSE 32%
12 PM 33° Mostly Clear 3% 11 mph SSE 28%
1 PM 35° Mostly Clear 3% 10 mph SSE 27%
2 PM 36° Mostly Clear 10% 9 mph SSE 26%
3 PM 38° Mostly Clear 14% 9 mph S 25%
15-Day Forecast
Today
7/15
Clear
8%
19°
36°
Thu
7/16
Mostly Clear
14%
19°
39°
Fri
7/17
Partly Cloudy
6%
21°
35°
Sat
7/18
Partly Cloudy
17%
19°
34°
Sun
7/19
Mostly Clear
19%
19°
39°
Mon
7/20
Clear
9%
19°
35°
Tue
7/21
Partly Cloudy
9%
18°
31°
Wed
7/22
Overcast
60%
18°
31°
Thu
7/23
Drizzle
60%
17°
33°
Fri
7/24
Drizzle
60%
13°
34°
Sat
7/25
Drizzle
60%
12°
33°
Sun
7/26
Drizzle
60%
19°
34°
Mon
7/27
Drizzle
60%
20°
34°
Tue
7/28
Drizzle
60%
21°
36°
Wed
7/29
Drizzle
60%
21°
35°
46
Good
U.S. Air Quality Index · Dominant: O3
50 100 150 200

Air quality is satisfactory and poses little or no health risk.

Pollutant Breakdown · Today
PM2.5
Fine particulate matter
28 AQI 5.1 µg/m³
O3
Ground-level ozone
Dominant
46 AQI 51 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Thu 46 Good 46 28
Fri 49 Good 49 33
Sat 44 Good 44 34
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 Wed Jul 15, 20:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE98 J/kg
MLCAPE19 J/kg
MUCAPE98 J/kg
SBCIN0 J/kg
MLCIN0 J/kg
Lifted Index2.4
Kinematics
0–6 km Shear22 kt
0–1 km Shear4 kt
Eff. Shear—
0–1 km SRH7
0–3 km SRH-12
Eff. SRH—
Storm Motion187° @ 23 kt
0–1 km EHI0.0
Composite Parameters
Sig. Tornado0.0
STP (eff)—
Supercell—
K-Index23.7
Thermo & Levels
PWAT0.82 in
0–3 km LR8.8 °C/km
700–500 LR5.2 °C/km
Total Totals39.7
LCL666 hPa
LFC945 hPa
EL706 hPa
Freezing Lvl15,535 ft