Frost Advisory — Brown, SD, Marshall, SD, Roberts, SD, Day, SD, Spink, SD, Clark, SD 9:00 AM

Clark County, South Dakota, United States

Last updated: 8:27 PM CDT  ·  Refresh
5°C
Feels like 3°
Clear
▲ 10°  /  ▼ 3°
Wind
4 mph SW
Humidity
49%
Dew Point
-4°
Pressure
28.61 inHg
Visibility
10 mi
UV Index
0.0
Cloud Cover
0%
Sunrise
7:46 AM
Sunset
6:44 PM
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WeatherAI™ Analysis

WeatherAI Analysis: Clark County is currently clear at 5°C. Dry conditions are expected through the next 24 hours. Sunrise: 7:46AM · Sunset: 6:44PM.

Alerts

Frost Advisory
Brown, SD, Marshall, SD, Roberts, SD, Day, SD, Spink, SD, Clark, SD
Expires 9:00 AM
26 AQI · Good Dominant: O3 Air Quality
Hourly Forecast · Next 24 Hours
Now
5°
11%
9 PM
4°
3%
10 PM
3°
3%
11 PM
3°
3%
12 AM
3°
3%
1 AM
3°
3%
2 AM
3°
3%
3 AM
3°
3%
4 AM
3°
3%
5 AM
3°
3%
6 AM
3°
3%
7 AM
3°
3%
8 AM
4°
3%
9 AM
6°
3%
10 AM
7°
3%
11 AM
9°
3%
12 PM
11°
3%
1 PM
12°
3%
2 PM
15°
3%
3 PM
16°
3%
4 PM
16°
3%
5 PM
16°
3%
6 PM
13°
3%
7 PM
13°
3%
7-Day Forecast
Tonight
10° 3°
Clear.
Sat
17° 3°
Clear.
Sun
19° 7°
Mostly Clear.
Mon
18° 6°
Mostly Clear.
Tue
19° 9°
Partly Cloudy.
Wed
22° 11°
Clear.
Thu
23° 11°
Partly Cloudy.
TimeTempConditionsPrecipWindHumidity
Now 5° Clear 11% 4 mph SW 49%
9 PM 4° Clear 3% 6 mph SSW 48%
10 PM 3° Clear 3% 7 mph SSW 51%
11 PM 3° Clear 3% 8 mph S 53%
12 AM 3° Clear 3% 10 mph S 55%
1 AM 3° Clear 3% 11 mph S 57%
2 AM 3° Clear 3% 13 mph S 58%
3 AM 3° Clear 3% 14 mph SSW 58%
4 AM 3° Clear 3% 15 mph SSW 58%
5 AM 3° Clear 3% 16 mph SSW 58%
6 AM 3° Clear 3% 17 mph SSW 58%
7 AM 3° Clear 3% 18 mph SSW 58%
8 AM 4° Clear 3% 18 mph SSW 55%
9 AM 6° Clear 3% 18 mph SSW 52%
10 AM 7° Clear 3% 18 mph SSW 47%
11 AM 9° Clear 3% 18 mph SSW 42%
12 PM 11° Clear 3% 18 mph SSW 37%
1 PM 12° Clear 3% 18 mph SSW 34%
2 PM 15° Clear 3% 18 mph SSW 32%
3 PM 16° Clear 3% 18 mph SSW 31%
4 PM 16° Clear 3% 18 mph SSW 32%
5 PM 16° Clear 3% 18 mph SSW 34%
6 PM 13° Clear 3% 17 mph S 36%
7 PM 13° Clear 3% 17 mph S 38%
15-Day Forecast
Today
10/16
Clear
11%
3°
10°
Sat
10/17
Clear
3%
3°
17°
Sun
10/18
Mostly Clear
3%
7°
19°
Mon
10/19
Mostly Clear
3%
6°
18°
Tue
10/20
Partly Cloudy
5%
9°
19°
Wed
10/21
Clear
9%
11°
22°
Thu
10/22
Partly Cloudy
15%
11°
23°
Fri
10/23
Overcast
30%
11°
22°
Sat
10/24
Drizzle
47%
5°
16°
Sun
10/25
Drizzle
35%
2°
11°
Mon
10/26
Clear
31%
4°
11°
Tue
10/27
Drizzle
60%
3°
11°
Wed
10/28
Drizzle
60%
4°
12°
Thu
10/29
Clear
25%
4°
13°
Fri
10/30
Drizzle
60%
4°
11°
26
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
9 AQI 1.7 µg/m³
O3
Ground-level ozone
Dominant
26 AQI 29 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Today 26 Good 26 9
Sun 28 Good 28 10
Mon 22 Good 22 18
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 Fri Oct 16, 23:00'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
MLCAPE11 J/kg
MUCAPE0 J/kg
SBCIN—
MLCIN0 J/kg
Lifted Index23.0
Kinematics
0–6 km Shear44 kt
0–1 km Shear7 kt
Eff. Shear—
0–1 km SRH48
0–3 km SRH98
Eff. SRH—
Storm Motion14° @ 26 kt
0–1 km EHI0.0
Composite Parameters
Sig. Tornado0.0
STP (eff)—
Supercell—
K-Index-32.7
Thermo & Levels
PWAT0.25 in
0–3 km LR2.6 °C/km
700–500 LR5.0 °C/km
Total Totals-0.3
LCL844 hPa
LFC—
EL—
Freezing Lvl7,913 ft