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

Clark County, South Dakota, United States

Last updated: 5:17 PM CDT  ·  Refresh
33°C
Feels like 33°
Clear
▲ 36°  /  ▼ 20°
Wind
11 mph S
Humidity
32%
Dew Point
18°
Pressure
28.04 inHg
Visibility
10 mi
UV Index
7.0
Cloud Cover
10%
Sunrise
6:13 AM
Sunset
9:00 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Clark County is currently clear at 34°C. Precipitation is likely — peak probability 90% around 5 PM. Atmospheric instability is elevated (CAPE up to 1679 J/kg) — isolated convective development possible. Sunrise: 6:13AM · Sunset: 9:00PM.

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
57 AQI · Moderate Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
33°
3%
6 PM
32°
21%
7 PM
31°
21%
8 PM
29°
23%
9 PM
27°
23%
10 PM
26°
26%
11 PM
25°
26%
12 AM
24°
27%
1 AM
24°
8%
2 AM
24°
16%
3 AM
23°
16%
4 AM
23°
25%
5 AM
23°
25%
6 AM
20°
23%
7 AM
20°
31%
8 AM
22°
48%
9 AM
23°
55%
10 AM
23°
59%
11 AM
23°
63%
12 PM
23°
68%
1 PM
23°
76%
2 PM
24°
76%
3 PM
24°
80%
4 PM
24°
80%
7-Day Forecast
Today
36° 20°
Mostly Clear with a 26% chance of rain.
Thu
30° 18°
Overcast with a 90% chance of rain.
Fri
27° 16°
Mostly Clear with a 37% chance of rain.
Sat
29° 14°
Clear.
Sun
32° 17°
Clear.
Mon
34° 19°
Rain, 71% chance.
Tue
27° 14°
Partly Cloudy with a 38% chance of rain.
TimeTempConditionsPrecipWindHumidity
Now 33° Clear 3% 11 mph S 32%
6 PM 32° Mostly Clear 21% 10 mph S 31%
7 PM 31° Mostly Clear 21% 10 mph S 33%
8 PM 29° Partly Cloudy 23% 9 mph SSE 38%
9 PM 27° Partly Cloudy 23% 8 mph SSE 44%
10 PM 26° Partly Cloudy 26% 8 mph SSE 49%
11 PM 25° Partly Cloudy 26% 9 mph SSE 54%
12 AM 24° Mostly Cloudy 27% 10 mph SSE 58%
1 AM 24° Mostly Cloudy 8% 11 mph SSE 63%
2 AM 24° Mostly Cloudy 16% 10 mph SSE 68%
3 AM 23° Overcast 16% 10 mph SSE 74%
4 AM 23° Overcast 25% 9 mph S 79%
5 AM 23° Overcast 25% 8 mph SSE 83%
6 AM 20° Overcast 23% 7 mph SSE 86%
7 AM 20° Overcast 31% 7 mph SSE 86%
8 AM 22° Overcast 48% 8 mph S 80%
9 AM 23° Overcast 55% 10 mph S 74%
10 AM 23° Rain 59% 10 mph S 70%
11 AM 23° Rain 63% 9 mph S 70%
12 PM 23° Rain 68% 9 mph S 71%
1 PM 23° Rain 76% 9 mph S 72%
2 PM 24° Rain 76% 10 mph S 72%
3 PM 24° Heavy Rain 80% 10 mph S 72%
4 PM 24° Heavy Rain 80% 10 mph S 74%
15-Day Forecast
Today
7/29
Mostly Clear
26%
20°
36°
Thu
7/30
Overcast
90%
18°
30°
Fri
7/31
Mostly Clear
37%
16°
27°
Sat
8/1
Clear
3%
14°
29°
Sun
8/2
Clear
8%
17°
32°
Mon
8/3
Rain
71%
19°
34°
Tue
8/4
Partly Cloudy
38%
14°
27°
Wed
8/5
Clear
43%
12°
27°
Thu
8/6
Clear
44%
14°
30°
Fri
8/7
Drizzle
51%
18°
32°
Sat
8/8
Drizzle
60%
13°
32°
Sun
8/9
Drizzle
60%
18°
30°
Mon
8/10
Drizzle
60%
18°
30°
Tue
8/11
Drizzle
60%
19°
31°
Wed
8/12
Drizzle
60%
19°
32°
57
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
57 AQI 12.6 µg/m³
O3
Ground-level ozone
46 AQI 50 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Thu 57 Moderate 46 57
Fri 52 Moderate 41 52
Sat 57 Moderate 39 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 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
SBCAPE1345 J/kg
MLCAPE921 J/kg
MUCAPE1345 J/kg
SBCIN0 J/kg
MLCIN0 J/kg
Lifted Index-4.6
Kinematics
0–6 km Shear27 kt
0–1 km Shear4 kt
Eff. Shear27 kt
0–1 km SRH14
0–3 km SRH-28
Eff. SRH-28
Storm Motion243° @ 17 kt
0–1 km EHI0.1
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index29.4
Thermo & Levels
PWAT1.31 in
0–3 km LR8.3 °C/km
700–500 LR6.3 °C/km
Total Totals49.9
LCL755 hPa
LFC950 hPa
EL207 hPa
Freezing Lvl13,796 ft