Clay County, South Dakota, United States

Last updated: 9:41 PM CDT  ·  Refresh
29°C
Feels like 31°
Clear
▲ 34°  /  ▼ 20°
Wind
8 mph S
Humidity
53%
Dew Point
19°
Pressure
28.58 inHg
Visibility
9 mi
UV Index
0.0
Cloud Cover
0%
Sunrise
6:04 AM
Sunset
9:03 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Clay County is currently clear at 29°C. Dry conditions are expected through the next 24 hours. Atmospheric instability is elevated (CAPE up to 951 J/kg) — isolated convective development possible. Sunrise: 6:04AM · Sunset: 9:03PM.

Alerts

No active alerts for this location.
49 AQI · Good Dominant: O3 Air Quality
Hourly Forecast · Next 24 Hours
Now
29°
3%
10 PM
28°
14%
11 PM
27°
7%
12 AM
27°
3%
1 AM
26°
3%
2 AM
24°
3%
3 AM
24°
3%
4 AM
23°
3%
5 AM
20°
3%
6 AM
20°
3%
7 AM
21°
3%
8 AM
23°
3%
9 AM
25°
5%
10 AM
26°
5%
11 AM
27°
3%
12 PM
28°
3%
1 PM
31°
3%
2 PM
32°
3%
3 PM
32°
3%
4 PM
32°
3%
5 PM
33°
3%
6 PM
32°
3%
7 PM
31°
3%
8 PM
29°
3%
7-Day Forecast
Tonight
34° 20°
Clear.
Sat
34° 20°
Partly Cloudy.
Sun
37° 19°
Mostly Clear with a 34% chance of rain.
Mon
42° 22°
Clear.
Tue
32° 17°
Clear.
Wed
24° 9°
Rain, 64% chance.
Thu
28° 14°
Clear with a 52% chance of rain.
TimeTempConditionsPrecipWindHumidity
Now 29° Clear 3% 8 mph S 53%
10 PM 28° Clear 14% 8 mph S 56%
11 PM 27° Clear 7% 7 mph SSW 60%
12 AM 27° Clear 3% 7 mph SSW 63%
1 AM 26° Clear 3% 5 mph SSW 66%
2 AM 24° Clear 3% 2 mph SSW 68%
3 AM 24° Clear 3% 2 mph ENE 70%
4 AM 23° Mostly Clear 3% 3 mph E 72%
5 AM 20° Partly Cloudy 3% 3 mph ENE 73%
6 AM 20° Partly Cloudy 3% 4 mph NE 75%
7 AM 21° Partly Cloudy 3% 7 mph ENE 72%
8 AM 23° Partly Cloudy 3% 9 mph ENE 66%
9 AM 25° Partly Cloudy 5% 11 mph ENE 59%
10 AM 26° Partly Cloudy 5% 11 mph ENE 55%
11 AM 27° Partly Cloudy 3% 11 mph ENE 52%
12 PM 28° Partly Cloudy 3% 10 mph ENE 48%
1 PM 31° Partly Cloudy 3% 10 mph ENE 45%
2 PM 32° Partly Cloudy 3% 10 mph ENE 42%
3 PM 32° Partly Cloudy 3% 10 mph ENE 38%
4 PM 32° Partly Cloudy 3% 10 mph ENE 37%
5 PM 33° Partly Cloudy 3% 10 mph ENE 37%
6 PM 32° Partly Cloudy 3% 10 mph ENE 37%
7 PM 31° Partly Cloudy 3% 10 mph ENE 41%
8 PM 29° Partly Cloudy 3% 10 mph ENE 47%
15-Day Forecast
Today
7/17
Clear
3%
20°
34°
Sat
7/18
Partly Cloudy
5%
20°
34°
Sun
7/19
Mostly Clear
34%
19°
37°
Mon
7/20
Clear
14%
22°
42°
Tue
7/21
Clear
8%
17°
32°
Wed
7/22
Rain
64%
9°
24°
Thu
7/23
Clear
52%
14°
28°
Fri
7/24
Clear
31%
16°
29°
Sat
7/25
Drizzle
44%
13°
33°
Sun
7/26
Drizzle
68%
16°
33°
Mon
7/27
Rain
60%
17°
32°
Tue
7/28
Drizzle
60%
21°
36°
Wed
7/29
Drizzle
60%
20°
37°
Thu
7/30
Clear
60%
21°
36°
Fri
7/31
Clear
60%
21°
36°
49
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
35 AQI 6.3 µg/m³
O3
Ground-level ozone
Dominant
49 AQI 53 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Today 49 Good 49 35
Sun 40 Good 40 32
Mon 43 Good 43 24
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 Sat Jul 18, 01:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE597 J/kg
MLCAPE470 J/kg
MUCAPE1187 J/kg
SBCIN-303 J/kg
MLCIN0 J/kg
Lifted Index-2.1
Kinematics
0–6 km Shear12 kt
0–1 km Shear13 kt
Eff. Shear22 kt
0–1 km SRH71
0–3 km SRH12
Eff. SRH-35
Storm Motion262° @ 19 kt
0–1 km EHI0.3
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index36.2
Thermo & Levels
PWAT1.43 in
0–3 km LR6.6 °C/km
700–500 LR5.5 °C/km
Total Totals46.3
LCL839 hPa
LFC715 hPa
EL196 hPa
Freezing Lvl15,538 ft