Heat Advisory — McPherson, SD, Brown, SD, Marshall, SD, Roberts, SD, Edmunds, SD, Day, SD, Clark, SD, Grant, SD, Deuel, SD, Corson, SD, Campbell, SD, Walworth, SD, Dewey, SD, Potter, SD, Faulk, SD, Spink, 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: 5:18 PM CDT  ·  Refresh
37°C
Feels like 36°
Mostly Clear
▲ 38°  /  ▼ 20°
Wind
17 mph SSE
Humidity
25%
Dew Point
16°
Pressure
27.73 inHg
Visibility
10 mi
UV Index
7.2
Cloud Cover
13%
Sunrise
5:27 AM
Sunset
8:11 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Stanley County is currently mostly clear at 37°C. Precipitation is likely — peak probability 70% around 1 PM. Atmospheric instability is elevated (CAPE up to 1513 J/kg) — isolated convective development possible. Sunrise: 5:27AM · Sunset: 8:11PM.

Alerts

Heat Advisory
McPherson, SD, Brown, SD, Marshall, SD, Roberts, SD, Edmunds, SD, Day, SD, Clark, SD, Grant, SD, Deuel, SD, Corson, SD, Campbell, SD, Walworth, SD, Dewey, SD, Potter, SD, Faulk, SD, Spink, SD, Stanley, SD, Sully, SD, Hughes, SD, Hyde, SD, Hand, SD, Jones, SD, Lyman, SD, Buffalo, SD
Expires 9:00 PM
60 AQI · Moderate Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
37°
8%
5 PM
36°
26%
6 PM
36°
28%
7 PM
33°
30%
8 PM
32°
30%
9 PM
29°
34%
10 PM
28°
34%
11 PM
26°
49%
12 AM
26°
55%
1 AM
24°
64%
2 AM
23°
64%
3 AM
23°
64%
4 AM
23°
64%
5 AM
20°
64%
6 AM
20°
52%
7 AM
21°
66%
8 AM
21°
58%
9 AM
23°
67%
10 AM
23°
63%
11 AM
23°
68%
12 PM
23°
68%
1 PM
24°
69%
2 PM
25°
56%
3 PM
26°
57%
7-Day Forecast
Today
38° 20°
Partly Cloudy with a 34% chance of rain.
Thu
33° 19°
Rain, 66% chance.
Fri
31° 16°
Mostly Clear.
Sat
33° 14°
Clear.
Sun
38° 17°
Partly Cloudy.
Mon
36° 19°
Mostly Clear.
Tue
28° 13°
Partly Cloudy.
TimeTempConditionsPrecipWindHumidity
Now 37° Mostly Clear 8% 17 mph SSE 25%
5 PM 36° Mostly Clear 26% 15 mph SSE 25%
6 PM 36° Partly Cloudy 28% 16 mph SSE 28%
7 PM 33° Partly Cloudy 30% 14 mph SSE 33%
8 PM 32° Partly Cloudy 30% 12 mph SSE 38%
9 PM 29° Mostly Cloudy 34% 11 mph SSE 44%
10 PM 28° Rain 34% 10 mph SSE 49%
11 PM 26° Rain 49% 12 mph S 54%
12 AM 26° Rain 55% 10 mph S 60%
1 AM 24° Rain 64% 8 mph S 66%
2 AM 23° Rain 64% 8 mph S 70%
3 AM 23° Rain 64% 7 mph S 73%
4 AM 23° Overcast 64% 7 mph S 77%
5 AM 20° Rain 64% 9 mph SSE 81%
6 AM 20° Rain 52% 8 mph S 83%
7 AM 21° Rain 66% 7 mph SSE 79%
8 AM 21° Rain 58% 6 mph SSE 74%
9 AM 23° Rain 67% 6 mph SE 72%
10 AM 23° Rain 63% 6 mph SE 74%
11 AM 23° Rain 68% 7 mph SE 76%
12 PM 23° Heavy Rain 68% 6 mph SE 77%
1 PM 24° Mostly Cloudy 69% 6 mph ESE 75%
2 PM 25° Mostly Cloudy 56% 7 mph E 72%
3 PM 26° Partly Cloudy 57% 8 mph ENE 70%
15-Day Forecast
Today
7/29
Partly Cloudy
34%
20°
38°
Thu
7/30
Rain
66%
19°
33°
Fri
7/31
Mostly Clear
9%
16°
31°
Sat
8/1
Clear
3%
14°
33°
Sun
8/2
Partly Cloudy
3%
17°
38°
Mon
8/3
Mostly Clear
17%
19°
36°
Tue
8/4
Partly Cloudy
17%
13°
28°
Wed
8/5
Clear
43%
12°
28°
Thu
8/6
Mostly Clear
18%
15°
32°
Fri
8/7
Clear
25%
19°
34°
Sat
8/8
Drizzle
60%
14°
33°
Sun
8/9
Drizzle
60%
21°
32°
Mon
8/10
Drizzle
60%
21°
32°
Tue
8/11
Drizzle
60%
22°
33°
Wed
8/12
Drizzle
60%
22°
34°
60
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
60 AQI 14.2 µg/m³
O3
Ground-level ozone
58 AQI 57 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Thu 60 Moderate 58 60
Fri 53 Moderate 49 53
Sat 58 Moderate 49 58
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 29, 21:00'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
SBCAPE1297 J/kg
MLCAPE1029 J/kg
MUCAPE1297 J/kg
SBCIN0 J/kg
MLCIN0 J/kg
Lifted Index-4.9
Kinematics
0–6 km Shear29 kt
0–1 km Shear1 kt
Eff. Shear27 kt
0–1 km SRH2
0–3 km SRH-25
Eff. SRH-25
Storm Motion214° @ 20 kt
0–1 km EHI0.0
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index38.5
Thermo & Levels
PWAT1.35 in
0–3 km LR9.3 °C/km
700–500 LR6.9 °C/km
Total Totals53.7
LCL696 hPa
LFC939 hPa
EL206 hPa
Freezing Lvl14,367 ft