Douglas County, South Dakota, United States

Last updated: 10:37 PM CDT  ·  Refresh
29°C
Feels like 29°
Clear
▲ 37°  /  ▼ 20°
Wind
5 mph SE
Humidity
44%
Dew Point
17°
Pressure
28.26 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 29°C. Dry conditions are expected through the next 24 hours. Atmospheric instability is elevated (CAPE up to 1639 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
29°
3%
11 PM
27°
3%
12 AM
26°
3%
1 AM
26°
3%
2 AM
25°
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
23°
3%
10 AM
25°
3%
11 AM
27°
3%
12 PM
28°
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%
9 PM
28°
3%
7-Day Forecast
Tonight
37° 20°
Clear.
Sat
35° 20°
Mostly Clear.
Sun
39° 19°
Clear.
Mon
39° 22°
Mostly Clear.
Tue
29° 16°
Clear.
Wed
24° 11°
Drizzle, 51% chance.
Thu
28° 14°
Clear with a 52% chance of rain.
TimeTempConditionsPrecipWindHumidity
Now 29° Clear 3% 5 mph SE 44%
11 PM 27° Clear 3% 5 mph NNE 50%
12 AM 26° Clear 3% 4 mph N 56%
1 AM 26° Clear 3% 4 mph N 62%
2 AM 25° Clear 3% 6 mph NNE 66%
3 AM 24° Clear 3% 10 mph NNE 70%
4 AM 23° Partly Cloudy 3% 11 mph NE 72%
5 AM 21° Partly Cloudy 3% 11 mph NE 72%
6 AM 20° Partly Cloudy 3% 11 mph NE 73%
7 AM 21° Partly Cloudy 3% 11 mph ENE 70%
8 AM 22° Partly Cloudy 3% 12 mph ENE 65%
9 AM 23° Partly Cloudy 3% 12 mph ENE 59%
10 AM 25° Partly Cloudy 3% 11 mph ENE 53%
11 AM 27° Partly Cloudy 3% 11 mph ENE 48%
12 PM 28° Partly Cloudy 3% 10 mph ENE 43%
1 PM 32° Mostly Clear 3% 10 mph ENE 39%
2 PM 32° Mostly Clear 3% 10 mph ENE 36%
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° Mostly Clear 3% 9 mph ENE 31%
7 PM 32° Mostly Clear 3% 9 mph ENE 33%
8 PM 31° Clear 3% 9 mph E 37%
9 PM 28° Clear 3% 9 mph E 41%
15-Day Forecast
Today
7/17
Clear
3%
20°
37°
Sat
7/18
Mostly Clear
3%
20°
35°
Sun
7/19
Clear
11%
19°
39°
Mon
7/20
Mostly Clear
15%
22°
39°
Tue
7/21
Clear
16%
16°
29°
Wed
7/22
Drizzle
51%
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
60%
22°
35°
Fri
7/31
Drizzle
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, 02:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE39 J/kg
MLCAPE330 J/kg
MUCAPE1303 J/kg
SBCIN-466 J/kg
MLCIN0 J/kg
Lifted Index-0.3
Kinematics
0–6 km Shear15 kt
0–1 km Shear7 kt
Eff. Shear14 kt
0–1 km SRH18
0–3 km SRH-27
Eff. SRH-36
Storm Motion268° @ 17 kt
0–1 km EHI0.0
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index36.5
Thermo & Levels
PWAT1.49 in
0–3 km LR6.9 °C/km
700–500 LR5.7 °C/km
Total Totals45.7
LCL806 hPa
LFC661 hPa
EL485 hPa
Freezing Lvl14,692 ft