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

Roberts County, South Dakota, United States

Last updated: 5:04 PM CDT  ·  Refresh
32°C
Feels like 33°
Clear
▲ 33°  /  ▼ 21°
Wind
8 mph SSE
Humidity
45%
Dew Point
20°
Pressure
28.71 inHg
Visibility
10 mi
UV Index
7.4
Cloud Cover
5%
Sunrise
5:53 AM
Sunset
9:13 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Roberts County is currently clear at 32°C. Dry conditions are expected through the next 24 hours. Atmospheric instability is elevated (CAPE up to 1373 J/kg) — isolated convective development possible. Sunrise: 5:53AM · Sunset: 9:13PM.

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
36 AQI · Good Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
32°
3%
6 PM
33°
3%
7 PM
33°
3%
8 PM
31°
3%
9 PM
29°
3%
10 PM
26°
6%
11 PM
26°
3%
12 AM
24°
3%
1 AM
24°
3%
2 AM
24°
3%
3 AM
23°
3%
4 AM
22°
3%
5 AM
22°
3%
6 AM
21°
3%
7 AM
21°
3%
8 AM
23°
3%
9 AM
25°
3%
10 AM
26°
3%
11 AM
27°
3%
12 PM
28°
3%
1 PM
29°
3%
2 PM
30°
3%
3 PM
30°
3%
4 PM
32°
3%
7-Day Forecast
Today
33° 21°
Clear.
Thu
33° 21°
Mostly Clear.
Fri
36° 22°
Mostly Clear.
Sat
30° 18°
Mostly Clear.
Sun
35° 20°
Mostly Clear.
Mon
34° 18°
Clear.
Tue
29° 16°
Clear.
TimeTempConditionsPrecipWindHumidity
Now 32° Clear 3% 8 mph SSE 45%
6 PM 33° Mostly Clear 3% 7 mph SSE 44%
7 PM 33° Clear 3% 6 mph SE 46%
8 PM 31° Clear 3% 5 mph SE 54%
9 PM 29° Clear 3% 5 mph SE 60%
10 PM 26° Clear 6% 6 mph SSE 66%
11 PM 26° Clear 3% 6 mph SSE 69%
12 AM 24° Mostly Clear 3% 6 mph SSE 71%
1 AM 24° Mostly Clear 3% 5 mph S 72%
2 AM 24° Mostly Clear 3% 5 mph S 74%
3 AM 23° Clear 3% 5 mph S 76%
4 AM 22° Clear 3% 5 mph S 77%
5 AM 22° Clear 3% 5 mph S 78%
6 AM 21° Clear 3% 6 mph SSW 79%
7 AM 21° Clear 3% 5 mph S 80%
8 AM 23° Clear 3% 6 mph S 72%
9 AM 25° Clear 3% 6 mph S 63%
10 AM 26° Clear 3% 7 mph S 55%
11 AM 27° Clear 3% 8 mph S 50%
12 PM 28° Mostly Clear 3% 8 mph S 46%
1 PM 29° Mostly Clear 3% 9 mph S 42%
2 PM 30° Mostly Clear 3% 8 mph S 42%
3 PM 30° Mostly Clear 3% 8 mph S 41%
4 PM 32° Mostly Clear 3% 9 mph SSE 41%
15-Day Forecast
Today
7/15
Clear
3%
21°
33°
Thu
7/16
Mostly Clear
3%
21°
33°
Fri
7/17
Mostly Clear
3%
22°
36°
Sat
7/18
Mostly Clear
8%
18°
30°
Sun
7/19
Mostly Clear
19%
20°
35°
Mon
7/20
Clear
9%
18°
34°
Tue
7/21
Clear
9%
16°
29°
Wed
7/22
Overcast
60%
15°
29°
Thu
7/23
Drizzle
60%
17°
31°
Fri
7/24
Drizzle
60%
17°
32°
Sat
7/25
Drizzle
60%
9°
32°
Sun
7/26
Drizzle
60%
17°
32°
Mon
7/27
Drizzle
60%
18°
32°
Tue
7/28
Drizzle
60%
18°
33°
Wed
7/29
Drizzle
60%
19°
34°
36
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
36 AQI 6.5 µg/m³
O3
Ground-level ozone
34 AQI 38 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Thu 36 Good 34 36
Fri 39 Good 38 39
Sat 55 Moderate 45 55
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
SBCAPE1281 J/kg
MLCAPE688 J/kg
MUCAPE1281 J/kg
SBCIN0 J/kg
MLCIN0 J/kg
Lifted Index-2.1
Kinematics
0–6 km Shear35 kt
0–1 km Shear3 kt
Eff. Shear38 kt
0–1 km SRH7
0–3 km SRH-22
Eff. SRH-22
Storm Motion192° @ 25 kt
0–1 km EHI0.1
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index22.8
Thermo & Levels
PWAT1.28 in
0–3 km LR7.4 °C/km
700–500 LR5.0 °C/km
Total Totals40.5
LCL819 hPa
LFC972 hPa
EL184 hPa
Freezing Lvl16,434 ft