Douglas County, South Dakota, United States

Last updated: 9:42 PM CDT  ·  Refresh
31°C
Feels like 31°
Clear
▲ 37°  /  ▼ 20°
Wind
5 mph SSE
Humidity
38%
Dew Point
17°
Pressure
28.24 inHg
Visibility
10 mi
UV Index
0.0
Cloud Cover
2%
Sunrise
6:08 AM
Sunset
9:10 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Douglas County is currently clear at 31°C. Dry conditions are expected through the next 24 hours. Atmospheric instability is elevated (CAPE up to 1708 J/kg) — isolated convective development possible. Sunrise: 6:08AM · Sunset: 9:10PM.

Alerts

No active alerts for this location.
48 AQI · Good Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
31°
3%
10 PM
28°
3%
11 PM
27°
3%
12 AM
26°
3%
1 AM
26°
3%
2 AM
24°
3%
3 AM
24°
3%
4 AM
23°
3%
5 AM
21°
3%
6 AM
20°
3%
7 AM
21°
3%
8 AM
22°
3%
9 AM
24°
3%
10 AM
26°
3%
11 AM
27°
3%
12 PM
29°
3%
1 PM
32°
3%
2 PM
32°
3%
3 PM
33°
3%
4 PM
33°
3%
5 PM
33°
3%
6 PM
33°
3%
7 PM
32°
3%
8 PM
31°
3%
7-Day Forecast
Tonight
37° 20°
Clear.
Sat
36° 20°
Mostly Clear.
Sun
38° 19°
Mostly Clear.
Mon
41° 22°
Clear.
Tue
31° 17°
Clear.
Wed
24° 11°
Rain, 64% chance.
Thu
28° 14°
Clear with a 52% chance of rain.
TimeTempConditionsPrecipWindHumidity
Now 31° Clear 3% 5 mph SSE 38%
10 PM 28° Clear 3% 4 mph ESE 43%
11 PM 27° Clear 3% 5 mph NNE 50%
12 AM 26° Clear 3% 4 mph NNW 57%
1 AM 26° Clear 3% 4 mph NNE 62%
2 AM 24° Clear 3% 6 mph NNE 65%
3 AM 24° Clear 3% 10 mph NE 68%
4 AM 23° Partly Cloudy 3% 11 mph NE 69%
5 AM 21° Partly Cloudy 3% 11 mph NE 70%
6 AM 20° Partly Cloudy 3% 11 mph ENE 71%
7 AM 21° Mostly Clear 3% 12 mph ENE 67%
8 AM 22° Partly Cloudy 3% 12 mph ENE 61%
9 AM 24° Mostly Clear 3% 12 mph ENE 55%
10 AM 26° Mostly Clear 3% 11 mph ENE 50%
11 AM 27° Mostly Clear 3% 11 mph ENE 46%
12 PM 29° Mostly Clear 3% 10 mph ENE 41%
1 PM 32° Mostly Clear 3% 10 mph ENE 38%
2 PM 32° Mostly Clear 3% 10 mph ENE 35%
3 PM 33° Mostly Clear 3% 10 mph ENE 33%
4 PM 33° Mostly Clear 3% 10 mph ENE 32%
5 PM 33° Mostly Clear 3% 10 mph ENE 31%
6 PM 33° Partly Cloudy 3% 10 mph ENE 31%
7 PM 32° Partly Cloudy 3% 10 mph E 34%
8 PM 31° Mostly Clear 3% 9 mph E 37%
15-Day Forecast
Today
7/17
Clear
3%
20°
37°
Sat
7/18
Mostly Clear
3%
20°
36°
Sun
7/19
Mostly Clear
17%
19°
38°
Mon
7/20
Clear
7%
22°
41°
Tue
7/21
Clear
3%
17°
31°
Wed
7/22
Rain
64%
11°
24°
Thu
7/23
Clear
52%
14°
28°
Fri
7/24
Clear
17%
15°
31°
Sat
7/25
Drizzle
44%
14°
33°
Sun
7/26
Rain
68%
18°
34°
Mon
7/27
Clear
60%
16°
33°
Tue
7/28
Drizzle
60%
22°
36°
Wed
7/29
Drizzle
60%
21°
36°
Thu
7/30
Clear
25%
22°
35°
Fri
7/31
Clear
60%
21°
36°
48
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
48 AQI 8.7 µg/m³
O3
Ground-level ozone
47 AQI 52 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Today 48 Good 47 48
Sun 39 Good 39 39
Mon 43 Good 43 41
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
SBCAPE123 J/kg
MLCAPE4 J/kg
MUCAPE123 J/kg
SBCIN-448 J/kg
MLCIN0 J/kg
Lifted Index-0.8
Kinematics
0–6 km Shear18 kt
0–1 km Shear5 kt
Eff. Shear21 kt
0–1 km SRH14
0–3 km SRH-32
Eff. SRH-49
Storm Motion273° @ 18 kt
0–1 km EHI0.0
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index33.0
Thermo & Levels
PWAT1.29 in
0–3 km LR7.3 °C/km
700–500 LR5.9 °C/km
Total Totals43.5
LCL779 hPa
LFC647 hPa
EL228 hPa
Freezing Lvl14,672 ft