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

Stanley County, South Dakota, United States

Last updated: 7:44 AM CDT  ·  Refresh
26°C
Feels like 24°
Partly Cloudy
▲ 40°  /  ▼ 24°
Wind
14 mph SSE
Humidity
64%
Dew Point
18°
Pressure
27.69 inHg
Visibility
10 mi
UV Index
3.6
Cloud Cover
31%
Sunrise
5:23 AM
Sunset
8:14 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Stanley County is currently partly cloudy at 26°C. Dry conditions are expected through the next 24 hours. Atmospheric instability is elevated (CAPE up to 1497 J/kg) — isolated convective development possible. Sunrise: 5:23AM · Sunset: 8:14PM.

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
45 AQI · Good Dominant: O3 Air Quality
Hourly Forecast · Next 24 Hours
Now
26°
13%
7 AM
26°
31%
8 AM
28°
23%
9 AM
31°
21%
10 AM
32°
14%
11 AM
34°
14%
12 PM
37°
3%
1 PM
38°
3%
2 PM
38°
3%
3 PM
39°
3%
4 PM
39°
3%
5 PM
39°
3%
6 PM
38°
3%
7 PM
36°
3%
8 PM
33°
3%
9 PM
32°
3%
10 PM
31°
3%
11 PM
30°
3%
12 AM
30°
5%
1 AM
28°
5%
2 AM
28°
5%
3 AM
28°
5%
4 AM
27°
5%
5 AM
27°
5%
7-Day Forecast
Today
40° 24°
Clear with a 21% chance of rain.
Mon
39° 27°
Partly Cloudy with a 49% chance of rain.
Tue
39° 22°
Mostly Clear.
Wed
38° 22°
Mostly Clear with a 81% chance of rain.
Thu
35° 19°
Drizzle, 51% chance.
Fri
34° 17°
Rain, 29% chance.
Sat
34° 17°
Clear.
TimeTempConditionsPrecipWindHumidity
Now 26° Partly Cloudy 13% 14 mph SSE 64%
7 AM 26° Clear 31% 11 mph S 54%
8 AM 28° Clear 23% 10 mph SSW 46%
9 AM 31° Clear 21% 8 mph SW 40%
10 AM 32° Clear 14% 7 mph W 36%
11 AM 34° Clear 14% 9 mph NW 33%
12 PM 37° Mostly Clear 3% 9 mph NNW 31%
1 PM 38° Clear 3% 10 mph N 28%
2 PM 38° Clear 3% 11 mph N 25%
3 PM 39° Clear 3% 10 mph N 24%
4 PM 39° Clear 3% 10 mph NNE 24%
5 PM 39° Clear 3% 9 mph NNE 24%
6 PM 38° Clear 3% 8 mph NNE 24%
7 PM 36° Clear 3% 6 mph NE 26%
8 PM 33° Clear 3% 6 mph ENE 29%
9 PM 32° Mostly Clear 3% 5 mph ENE 31%
10 PM 31° Mostly Clear 3% 5 mph ENE 33%
11 PM 30° Mostly Clear 3% 6 mph NE 35%
12 AM 30° Mostly Clear 5% 6 mph NE 36%
1 AM 28° Mostly Clear 5% 6 mph NE 37%
2 AM 28° Mostly Clear 5% 6 mph NNE 39%
3 AM 28° Mostly Clear 5% 6 mph NNE 39%
4 AM 27° Partly Cloudy 5% 6 mph NNE 40%
5 AM 27° Partly Cloudy 5% 6 mph NNE 40%
15-Day Forecast
Today
7/26
Clear
21%
24°
40°
Mon
7/27
Partly Cloudy
49%
27°
39°
Tue
7/28
Mostly Clear
16%
22°
39°
Wed
7/29
Mostly Clear
81%
22°
38°
Thu
7/30
Drizzle
51%
19°
35°
Fri
7/31
Rain
29%
17°
34°
Sat
8/1
Clear
8%
17°
34°
Sun
8/2
Clear
18%
21°
39°
Mon
8/3
Drizzle
44%
22°
39°
Tue
8/4
Clear
44%
18°
32°
Wed
8/5
Clear
25%
19°
32°
Thu
8/6
Drizzle
60%
21°
33°
Fri
8/7
Clear
60%
21°
34°
Sat
8/8
Drizzle
60%
22°
35°
Sun
8/9
Clear
25%
21°
33°
45
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
39 AQI 7.2 µg/m³
O3
Ground-level ozone
Dominant
45 AQI 49 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Mon 45 Good 45 39
Tue 58 Moderate 58 45
Wed 64 Moderate 64 51
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, 11:00'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
SBCAPE185 J/kg
MLCAPE210 J/kg
MUCAPE450 J/kg
SBCIN-1021 J/kg
MLCIN0 J/kg
Lifted Index-1.7
Kinematics
0–6 km Shear31 kt
0–1 km Shear21 kt
Eff. Shear16 kt
0–1 km SRH92
0–3 km SRH54
Eff. SRH-35
Storm Motion231° @ 32 kt
0–1 km EHI0.1
Composite Parameters
Sig. Tornado0.1
STP (eff)0.0
Supercell0.0
K-Index31.7
Thermo & Levels
PWAT1.49 in
0–3 km LR4.1 °C/km
700–500 LR8.4 °C/km
Total Totals51.1
LCL836 hPa
LFC561 hPa
EL336 hPa
Freezing Lvl14,642 ft