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

McPherson County, South Dakota, United States

Last updated: 6:13 AM CDT  ·  Refresh
22°C
Feels like 23°
Mostly Cloudy
▲ 37°  /  ▼ 21°
Wind
5 mph S
Humidity
78%
Dew Point
17°
Pressure
27.80 inHg
Visibility
10 mi
UV Index
0.0
Cloud Cover
80%
Sunrise
6:13 AM
Sunset
9:12 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: McPherson County is currently mostly cloudy at 22°C. Dry conditions are expected through the next 24 hours. Atmospheric instability is elevated (CAPE up to 1733 J/kg) — isolated convective development possible. Sunrise: 6:13AM · Sunset: 9:12PM.

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: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
22°
24%
7 AM
19°
29%
8 AM
21°
31%
9 AM
23°
43%
10 AM
26°
33%
11 AM
28°
15%
12 PM
30°
15%
1 PM
32°
4%
2 PM
34°
4%
3 PM
34°
4%
4 PM
35°
4%
5 PM
35°
4%
6 PM
36°
5%
7 PM
36°
5%
8 PM
33°
5%
9 PM
31°
5%
10 PM
28°
5%
11 PM
27°
3%
12 AM
26°
3%
1 AM
24°
3%
2 AM
25°
3%
3 AM
24°
3%
4 AM
24°
3%
5 AM
23°
3%
7-Day Forecast
Today
37° 21°
Partly Cloudy with a 43% chance of rain.
Mon
36° 21°
Partly Cloudy.
Tue
36° 19°
Mostly Clear.
Wed
37° 19°
Clear with a 45% chance of rain.
Thu
30° 19°
Rain, 67% chance.
Fri
32° 16°
Rain, 56% chance.
Sat
32° 16°
Clear with a 20% chance of rain.
TimeTempConditionsPrecipWindHumidity
Now 22° Mostly Cloudy 24% 5 mph S 78%
7 AM 19° Overcast 29% 5 mph SW 71%
8 AM 21° Rain 31% 5 mph SSW 67%
9 AM 23° Mostly Cloudy 43% 8 mph SW 62%
10 AM 26° Partly Cloudy 33% 8 mph SSW 58%
11 AM 28° Mostly Clear 15% 7 mph SW 53%
12 PM 30° Partly Cloudy 15% 6 mph WSW 45%
1 PM 32° Partly Cloudy 4% 5 mph WSW 38%
2 PM 34° Mostly Clear 4% 4 mph WNW 34%
3 PM 34° Mostly Clear 4% 4 mph N 32%
4 PM 35° Mostly Clear 4% 4 mph NNW 30%
5 PM 35° Mostly Clear 4% 4 mph NNW 30%
6 PM 36° Mostly Clear 5% 4 mph NNW 29%
7 PM 36° Mostly Clear 5% 3 mph NW 30%
8 PM 33° Mostly Clear 5% 4 mph NNW 35%
9 PM 31° Mostly Clear 5% 5 mph N 40%
10 PM 28° Mostly Clear 5% 7 mph N 43%
11 PM 27° Mostly Clear 3% 7 mph NNW 44%
12 AM 26° Clear 3% 7 mph NNW 46%
1 AM 24° Clear 3% 7 mph NNW 47%
2 AM 25° Clear 3% 7 mph NNW 49%
3 AM 24° Clear 3% 6 mph N 50%
4 AM 24° Clear 3% 6 mph N 52%
5 AM 23° Mostly Clear 3% 7 mph N 54%
15-Day Forecast
Today
7/26
Partly Cloudy
43%
21°
37°
Mon
7/27
Partly Cloudy
14%
21°
36°
Tue
7/28
Mostly Clear
18%
19°
36°
Wed
7/29
Clear
45%
19°
37°
Thu
7/30
Rain
67%
19°
30°
Fri
7/31
Rain
56%
16°
32°
Sat
8/1
Clear
20%
16°
32°
Sun
8/2
Mostly Clear
34%
18°
37°
Mon
8/3
Clear
38%
19°
36°
Tue
8/4
Clear
19%
15°
29°
Wed
8/5
Drizzle
60%
14°
30°
Thu
8/6
Drizzle
60%
17°
31°
Fri
8/7
Clear
25%
17°
32°
Sat
8/8
Drizzle
60%
18°
33°
Sun
8/9
Clear
60%
19°
32°
45
Good
U.S. Air Quality Index · Dominant: PM2.5
50 100 150 200

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

Pollutant Breakdown · Today
PM2.5
Fine particulate matter
Dominant
45 AQI 8.1 µg/m³
O3
Ground-level ozone
43 AQI 47 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Today 45 Good 43 45
Mon 40 Good 39 40
Tue 53 Moderate 50 53
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 LCL0°C Temperature (°C) Pressure (hPa)
Temp Dewpoint Parcel (SB) CAPE CIN Dry adiabat Moist adiabat Mixing ratio
RAP
Valid Sun Jul 26, 09:00'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
SBCAPE0 J/kg
MLCAPE54 J/kg
MUCAPE211 J/kg
SBCIN-5766 J/kg
MLCIN0 J/kg
Lifted Index0.2
Kinematics
0–6 km Shear30 kt
0–1 km Shear28 kt
Eff. Shear23 kt
0–1 km SRH128
0–3 km SRH124
Eff. SRH-45
Storm Motion234° @ 26 kt
0–1 km EHI0.0
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index31.8
Thermo & Levels
PWAT1.28 in
0–3 km LR3.6 °C/km
700–500 LR7.8 °C/km
Total Totals50.6
LCL882 hPa
LFC—
EL—
Freezing Lvl14,131 ft