Heat Advisory — Brown, SD, Marshall, SD, Roberts, SD, Walworth, SD, Edmunds, SD, Day, SD, Dewey, SD, Potter, SD, Faulk, SD, Spink, SD, Clark, SD, Codington, SD, Grant, SD, Hamlin, SD, Deuel, 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: 5:36 PM CDT  ·  Refresh
32°C
Feels like 34°
Mostly Clear
▲ 33°  /  ▼ 17°
Wind
10 mph N
Humidity
52%
Dew Point
22°
Pressure
28.55 inHg
Visibility
7 mi
UV Index
6.7
Cloud Cover
17%
Sunrise
5:55 AM
Sunset
9:12 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Roberts County is currently mostly clear at 32°C. Dry conditions are expected through the next 24 hours. Atmospheric instability is elevated (CAPE up to 3078 J/kg) — isolated convective development possible. Sunrise: 5:55AM · Sunset: 9:12PM.

Alerts

Heat Advisory
Brown, SD, Marshall, SD, Roberts, SD, Walworth, SD, Edmunds, SD, Day, SD, Dewey, SD, Potter, SD, Faulk, SD, Spink, SD, Clark, SD, Codington, SD, Grant, SD, Hamlin, SD, Deuel, 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
32°
5%
6 PM
32°
10%
7 PM
31°
10%
8 PM
28°
10%
9 PM
26°
10%
10 PM
24°
8%
11 PM
23°
8%
12 AM
21°
3%
1 AM
21°
3%
2 AM
20°
3%
3 AM
19°
3%
4 AM
18°
3%
5 AM
17°
3%
6 AM
17°
3%
7 AM
18°
3%
8 AM
20°
3%
9 AM
21°
3%
10 AM
22°
3%
11 AM
23°
3%
12 PM
25°
3%
1 PM
26°
3%
2 PM
26°
3%
3 PM
27°
3%
4 PM
27°
3%
7-Day Forecast
Today
33° 17°
Mostly Clear.
Sat
29° 17°
Partly Cloudy.
Sun
33° 19°
Mostly Clear with a 39% chance of rain.
Mon
32° 19°
Clear with a 22% chance of rain.
Tue
26° 14°
Partly Cloudy.
Wed
27° 14°
Clear.
Thu
29° 17°
Mostly Clear.
TimeTempConditionsPrecipWindHumidity
Now 32° Mostly Clear 5% 10 mph N 52%
6 PM 32° Clear 10% 11 mph N 54%
7 PM 31° Clear 10% 11 mph N 58%
8 PM 28° Clear 10% 9 mph N 62%
9 PM 26° Clear 10% 8 mph N 66%
10 PM 24° Mostly Clear 8% 7 mph N 70%
11 PM 23° Mostly Clear 8% 7 mph N 75%
12 AM 21° Mostly Clear 3% 7 mph N 79%
1 AM 21° Mostly Clear 3% 6 mph N 82%
2 AM 20° Mostly Clear 3% 6 mph N 84%
3 AM 19° Mostly Clear 3% 6 mph NNW 87%
4 AM 18° Mostly Clear 3% 5 mph NNW 88%
5 AM 17° Mostly Clear 3% 5 mph NNW 88%
6 AM 17° Mostly Clear 3% 4 mph NNW 88%
7 AM 18° Mostly Clear 3% 4 mph NNW 83%
8 AM 20° Mostly Clear 3% 4 mph NNE 74%
9 AM 21° Mostly Clear 3% 4 mph NE 64%
10 AM 22° Mostly Clear 3% 5 mph NE 57%
11 AM 23° Mostly Clear 3% 5 mph NE 51%
12 PM 25° Mostly Clear 3% 5 mph NE 46%
1 PM 26° Mostly Clear 3% 5 mph NE 44%
2 PM 26° Partly Cloudy 3% 5 mph NE 44%
3 PM 27° Partly Cloudy 3% 5 mph NE 43%
4 PM 27° Partly Cloudy 3% 5 mph NE 44%
15-Day Forecast
Today
7/17
Mostly Clear
10%
17°
33°
Sat
7/18
Partly Cloudy
3%
17°
29°
Sun
7/19
Mostly Clear
39%
19°
33°
Mon
7/20
Clear
22%
19°
32°
Tue
7/21
Partly Cloudy
3%
14°
26°
Wed
7/22
Clear
9%
14°
27°
Thu
7/23
Mostly Clear
19%
17°
29°
Fri
7/24
Overcast
60%
17°
29°
Sat
7/25
Drizzle
60%
17°
30°
Sun
7/26
Drizzle
60%
17°
31°
Mon
7/27
Drizzle
60%
16°
32°
Tue
7/28
Drizzle
60%
18°
33°
Wed
7/29
Drizzle
60%
18°
31°
Thu
7/30
Drizzle
60%
18°
31°
Fri
7/31
Drizzle
60%
18°
31°
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 12.2 µg/m³
O3
Ground-level ozone
34 AQI 37 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Sat 57 Moderate 34 57
Sun 55 Moderate 27 55
Mon 56 Moderate 33 56
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 Fri Jul 17, 21:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 50 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE3355 J/kg
MLCAPE3506 J/kg
MUCAPE4077 J/kg
SBCIN0 J/kg
MLCIN0 J/kg
Lifted Index-7.7
Kinematics
0–6 km Shear18 kt
0–1 km Shear5 kt
Eff. Shear24 kt
0–1 km SRH-4
0–3 km SRH-13
Eff. SRH-13
Storm Motion247° @ 15 kt
0–1 km EHI-0.1
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index37.7
Thermo & Levels
PWAT1.89 in
0–3 km LR7.3 °C/km
700–500 LR6.4 °C/km
Total Totals52.1
LCL846 hPa
LFC967 hPa
EL150 hPa
Freezing Lvl15,069 ft