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

Stanley County, South Dakota, United States

Last updated: 5:05 PM CDT  ·  Refresh
35°C
Feels like 33°
Clear
▲ 36°  /  ▼ 20°
Wind
15 mph SSE
Humidity
22%
Dew Point
12°
Pressure
27.87 inHg
Visibility
10 mi
UV Index
7.7
Cloud Cover
0%
Sunrise
5:13 AM
Sunset
8:24 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Stanley County is currently clear at 35°C. Dry conditions are expected through the next 24 hours. Sunrise: 5:13AM · Sunset: 8:24PM.

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
54 AQI · Moderate Dominant: O3 Air Quality
Hourly Forecast · Next 24 Hours
Now
35°
3%
4 PM
36°
8%
5 PM
36°
8%
6 PM
34°
8%
7 PM
32°
8%
8 PM
28°
8%
9 PM
27°
8%
10 PM
26°
3%
11 PM
25°
3%
12 AM
24°
3%
1 AM
24°
3%
2 AM
23°
3%
3 AM
23°
3%
4 AM
21°
3%
5 AM
20°
3%
6 AM
22°
3%
7 AM
24°
3%
8 AM
27°
3%
9 AM
28°
3%
10 AM
31°
3%
11 AM
32°
3%
12 PM
34°
3%
1 PM
34°
3%
2 PM
34°
3%
7-Day Forecast
Today
36° 20°
Clear.
Thu
38° 20°
Clear.
Fri
38° 21°
Mostly Clear.
Sat
34° 21°
Mostly Clear with a 20% chance of rain.
Sun
40° 20°
Partly Cloudy with a 20% chance of rain.
Mon
37° 22°
Rain, 71% chance.
Tue
31° 20°
Clear with a 50% chance of rain.
TimeTempConditionsPrecipWindHumidity
Now 35° Clear 3% 15 mph SSE 22%
4 PM 36° Clear 8% 14 mph SSE 22%
5 PM 36° Clear 8% 14 mph SSE 22%
6 PM 34° Clear 8% 13 mph SE 25%
7 PM 32° Clear 8% 12 mph SE 29%
8 PM 28° Clear 8% 11 mph SE 34%
9 PM 27° Clear 8% 11 mph SE 38%
10 PM 26° Clear 3% 10 mph SE 42%
11 PM 25° Clear 3% 10 mph SE 46%
12 AM 24° Clear 3% 9 mph SE 49%
1 AM 24° Clear 3% 8 mph SSE 51%
2 AM 23° Clear 3% 8 mph SSE 54%
3 AM 23° Clear 3% 8 mph SSE 56%
4 AM 21° Clear 3% 8 mph SSE 59%
5 AM 20° Clear 3% 8 mph S 62%
6 AM 22° Clear 3% 9 mph S 55%
7 AM 24° Clear 3% 10 mph S 47%
8 AM 27° Clear 3% 11 mph S 40%
9 AM 28° Clear 3% 11 mph S 35%
10 AM 31° Clear 3% 11 mph S 30%
11 AM 32° Clear 3% 11 mph S 27%
12 PM 34° Clear 3% 10 mph S 26%
1 PM 34° Clear 3% 10 mph S 25%
2 PM 34° Clear 3% 10 mph SSE 24%
15-Day Forecast
Today
7/15
Clear
8%
20°
36°
Thu
7/16
Clear
3%
20°
38°
Fri
7/17
Mostly Clear
15%
21°
38°
Sat
7/18
Mostly Clear
20%
21°
34°
Sun
7/19
Partly Cloudy
20%
20°
40°
Mon
7/20
Rain
71%
22°
37°
Tue
7/21
Clear
50%
20°
31°
Wed
7/22
Drizzle
60%
18°
32°
Thu
7/23
Drizzle
60%
19°
34°
Fri
7/24
Drizzle
60%
17°
35°
Sat
7/25
Drizzle
60%
14°
34°
Sun
7/26
Drizzle
60%
21°
34°
Mon
7/27
Drizzle
60%
22°
34°
Tue
7/28
Drizzle
60%
22°
36°
Wed
7/29
Drizzle
60%
23°
37°
54
Moderate
U.S. Air Quality Index · Dominant: O3
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
24 AQI 4.5 µg/m³
O3
Ground-level ozone
Dominant
54 AQI 56 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Thu 54 Moderate 54 24
Fri 51 Moderate 51 22
Sat 43 Good 43 23
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
SBCAPE100 J/kg
MLCAPE18 J/kg
MUCAPE100 J/kg
SBCIN0 J/kg
MLCIN0 J/kg
Lifted Index3.4
Kinematics
0–6 km Shear19 kt
0–1 km Shear2 kt
Eff. Shear—
0–1 km SRH1
0–3 km SRH-30
Eff. SRH—
Storm Motion178° @ 26 kt
0–1 km EHI0.0
Composite Parameters
Sig. Tornado0.0
STP (eff)—
Supercell—
K-Index25.8
Thermo & Levels
PWAT0.93 in
0–3 km LR8.7 °C/km
700–500 LR4.6 °C/km
Total Totals38.8
LCL677 hPa
LFC944 hPa
EL712 hPa
Freezing Lvl16,296 ft