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

Roberts County, South Dakota, United States

Last updated: 6:18 PM CDT  ·  Refresh
34°C
Feels like 34°
Mostly Clear
▲ 36°  /  ▼ 21°
Wind
10 mph SSE
Humidity
33%
Dew Point
18°
Pressure
28.51 inHg
Visibility
10 mi
UV Index
5.5
Cloud Cover
13%
Sunrise
6:08 AM
Sunset
8:59 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Roberts County is currently mostly clear at 34°C. Precipitation is likely — peak probability 90% around 6 PM. Atmospheric instability is elevated (CAPE up to 1747 J/kg) — isolated convective development possible. Sunrise: 6:08AM · Sunset: 8:59PM.

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
34°
15%
7 PM
33°
31%
8 PM
31°
29%
9 PM
28°
21%
10 PM
27°
21%
11 PM
26°
21%
12 AM
24°
20%
1 AM
23°
3%
2 AM
24°
9%
3 AM
23°
9%
4 AM
23°
9%
5 AM
23°
12%
6 AM
21°
13%
7 AM
21°
32%
8 AM
23°
44%
9 AM
24°
47%
10 AM
26°
64%
11 AM
25°
70%
12 PM
25°
74%
1 PM
24°
78%
2 PM
24°
80%
3 PM
23°
81%
4 PM
22°
81%
5 PM
22°
81%
7-Day Forecast
Tonight
36° 21°
Mostly Clear with a 21% chance of rain.
Thu
29° 18°
Heavy Rain, 90% chance.
Fri
28° 17°
Fog with a 67% chance of rain.
Sat
30° 16°
Clear.
Sun
34° 18°
Partly Cloudy.
Mon
34° 18°
Rain, 73% chance.
Tue
26° 13°
Partly Cloudy with a 63% chance of rain.
TimeTempConditionsPrecipWindHumidity
Now 34° Mostly Clear 15% 10 mph SSE 33%
7 PM 33° Mostly Clear 31% 10 mph SSE 32%
8 PM 31° Mostly Clear 29% 8 mph SSE 37%
9 PM 28° Partly Cloudy 21% 8 mph SSE 42%
10 PM 27° Mostly Cloudy 21% 8 mph S 47%
11 PM 26° Partly Cloudy 21% 8 mph S 50%
12 AM 24° Partly Cloudy 20% 8 mph S 54%
1 AM 23° Mostly Cloudy 3% 8 mph S 57%
2 AM 24° Mostly Cloudy 9% 9 mph S 62%
3 AM 23° Mostly Cloudy 9% 9 mph S 67%
4 AM 23° Mostly Cloudy 9% 10 mph SSW 71%
5 AM 23° Mostly Cloudy 12% 10 mph SSW 73%
6 AM 21° Mostly Cloudy 13% 10 mph SSW 75%
7 AM 21° Mostly Cloudy 32% 10 mph SSW 74%
8 AM 23° Mostly Cloudy 44% 9 mph SSW 70%
9 AM 24° Overcast 47% 8 mph SSW 64%
10 AM 26° Overcast 64% 8 mph S 62%
11 AM 25° Overcast 70% 9 mph SSW 65%
12 PM 25° Overcast 74% 11 mph SW 68%
1 PM 24° Rain 78% 12 mph WSW 72%
2 PM 24° Rain 80% 9 mph SW 77%
3 PM 23° Heavy Rain 81% 9 mph SSW 83%
4 PM 22° Heavy Rain 81% 10 mph SSE 87%
5 PM 22° Heavy Rain 81% 8 mph SSE 88%
15-Day Forecast
Today
7/29
Mostly Clear
21%
21°
36°
Thu
7/30
Heavy Rain
90%
18°
29°
Fri
7/31
Fog
67%
17°
28°
Sat
8/1
Clear
5%
16°
30°
Sun
8/2
Partly Cloudy
3%
18°
34°
Mon
8/3
Rain
73%
18°
34°
Tue
8/4
Partly Cloudy
63%
13°
26°
Wed
8/5
Clear
8%
12°
28°
Thu
8/6
Clear
34%
14°
29°
Fri
8/7
Rain
54%
14°
31°
Sat
8/8
Rain
55%
14°
28°
Sun
8/9
Drizzle
60%
17°
29°
Mon
8/10
Drizzle
60%
17°
28°
Tue
8/11
Drizzle
60%
18°
30°
Wed
8/12
Drizzle
60%
18°
30°
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 13.8 µg/m³
O3
Ground-level ozone
48 AQI 53 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Thu 60 Moderate 48 60
Fri 54 Moderate 44 54
Sat 57 Moderate 41 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, 22:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 50 60 70 80 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE1533 J/kg
MLCAPE2057 J/kg
MUCAPE2445 J/kg
SBCIN0 J/kg
MLCIN0 J/kg
Lifted Index-4.9
Kinematics
0–6 km Shear25 kt
0–1 km Shear6 kt
Eff. Shear26 kt
0–1 km SRH25
0–3 km SRH-2
Eff. SRH-2
Storm Motion252° @ 17 kt
0–1 km EHI0.2
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index30.5
Thermo & Levels
PWAT1.47 in
0–3 km LR8.4 °C/km
700–500 LR6.4 °C/km
Total Totals51.9
LCL770 hPa
LFC965 hPa
EL211 hPa
Freezing Lvl14,314 ft