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

McPherson County, South Dakota, United States

Last updated: 5:50 PM CDT  ·  Refresh
32°C
Feels like 31°
Clear
▲ 33°  /  ▼ 18°
Wind
14 mph SE
Humidity
33%
Dew Point
15°
Pressure
28.01 inHg
Visibility
10 mi
UV Index
6.6
Cloud Cover
4%
Sunrise
6:02 AM
Sunset
9:23 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: McPherson County is currently clear at 32°C. Dry conditions are expected through the next 24 hours. Atmospheric instability is elevated (CAPE up to 612 J/kg) — isolated convective development possible. Sunrise: 6:02AM · Sunset: 9:23PM.

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
43 AQI · Good Dominant: O3 Air Quality
Hourly Forecast · Next 24 Hours
Now
32°
3%
6 PM
33°
3%
7 PM
32°
3%
8 PM
29°
3%
9 PM
26°
3%
10 PM
24°
3%
11 PM
23°
3%
12 AM
23°
3%
1 AM
22°
3%
2 AM
21°
3%
3 AM
20°
3%
4 AM
20°
3%
5 AM
18°
3%
6 AM
18°
3%
7 AM
20°
3%
8 AM
22°
3%
9 AM
23°
3%
10 AM
25°
3%
11 AM
27°
3%
12 PM
29°
3%
1 PM
31°
3%
2 PM
31°
3%
3 PM
31°
3%
4 PM
31°
6%
7-Day Forecast
Today
33° 18°
Clear.
Thu
34° 18°
Mostly Clear.
Fri
35° 21°
Mostly Clear.
Sat
31° 17°
Partly Cloudy.
Sun
36° 19°
Partly Cloudy.
Mon
34° 18°
Clear.
Tue
29° 17°
Mostly Cloudy.
TimeTempConditionsPrecipWindHumidity
Now 32° Clear 3% 14 mph SE 33%
6 PM 33° Clear 3% 12 mph SE 32%
7 PM 32° Clear 3% 11 mph SE 36%
8 PM 29° Clear 3% 9 mph SE 42%
9 PM 26° Clear 3% 8 mph SE 48%
10 PM 24° Clear 3% 7 mph SE 52%
11 PM 23° Clear 3% 7 mph SE 55%
12 AM 23° Mostly Clear 3% 7 mph SE 57%
1 AM 22° Clear 3% 7 mph SE 61%
2 AM 21° Clear 3% 7 mph SE 65%
3 AM 20° Clear 3% 7 mph SE 69%
4 AM 20° Clear 3% 7 mph SE 72%
5 AM 18° Clear 3% 7 mph SE 74%
6 AM 18° Clear 3% 8 mph SE 76%
7 AM 20° Mostly Clear 3% 8 mph SSE 72%
8 AM 22° Mostly Clear 3% 8 mph SSE 66%
9 AM 23° Mostly Clear 3% 9 mph SSE 61%
10 AM 25° Mostly Clear 3% 10 mph SSE 54%
11 AM 27° Mostly Clear 3% 11 mph SSE 47%
12 PM 29° Clear 3% 11 mph SSE 41%
1 PM 31° Clear 3% 11 mph SSE 39%
2 PM 31° Mostly Clear 3% 11 mph SSE 38%
3 PM 31° Mostly Clear 3% 10 mph SSE 37%
4 PM 31° Mostly Clear 6% 10 mph SSE 37%
15-Day Forecast
Today
7/15
Clear
3%
18°
33°
Thu
7/16
Mostly Clear
7%
18°
34°
Fri
7/17
Mostly Clear
3%
21°
35°
Sat
7/18
Partly Cloudy
17%
17°
31°
Sun
7/19
Partly Cloudy
19%
19°
36°
Mon
7/20
Clear
9%
18°
34°
Tue
7/21
Mostly Cloudy
9%
17°
29°
Wed
7/22
Mostly Cloudy
60%
16°
29°
Thu
7/23
Drizzle
60%
17°
32°
Fri
7/24
Drizzle
60%
15°
32°
Sat
7/25
Drizzle
60%
11°
32°
Sun
7/26
Drizzle
60%
18°
33°
Mon
7/27
Drizzle
60%
18°
32°
Tue
7/28
Drizzle
60%
19°
33°
Wed
7/29
Drizzle
60%
20°
34°
43
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
28 AQI 5.1 µg/m³
O3
Ground-level ozone
Dominant
43 AQI 47 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Thu 43 Good 43 28
Fri 49 Good 49 28
Sat 42 Good 42 29
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, 21:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE136 J/kg
MLCAPE10 J/kg
MUCAPE136 J/kg
SBCIN0 J/kg
MLCIN0 J/kg
Lifted Index1.2
Kinematics
0–6 km Shear27 kt
0–1 km Shear2 kt
Eff. Shear15 kt
0–1 km SRH7
0–3 km SRH-17
Eff. SRH-17
Storm Motion182° @ 25 kt
0–1 km EHI0.0
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index15.0
Thermo & Levels
PWAT0.92 in
0–3 km LR7.5 °C/km
700–500 LR5.2 °C/km
Total Totals40.7
LCL746 hPa
LFC948 hPa
EL261 hPa
Freezing Lvl15,551 ft