Lake County, South Dakota, United States

Last updated: 9:42 PM CDT  ·  Refresh
30°C
Feels like 31°
Clear
▲ 34°  /  ▼ 19°
Wind
6 mph NE
Humidity
47%
Dew Point
19°
Pressure
28.10 inHg
Visibility
10 mi
UV Index
0.0
Cloud Cover
8%
Sunrise
6:01 AM
Sunset
9:07 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Lake County is currently clear at 30°C. Dry conditions are expected through the next 24 hours. Atmospheric instability is elevated (CAPE up to 2048 J/kg) — isolated convective development possible. Sunrise: 6:01AM · Sunset: 9:07PM.

Alerts

No active alerts for this location.
51 AQI · Moderate Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
30°
3%
10 PM
28°
3%
11 PM
27°
3%
12 AM
25°
3%
1 AM
24°
3%
2 AM
23°
3%
3 AM
22°
3%
4 AM
22°
3%
5 AM
19°
3%
6 AM
19°
3%
7 AM
20°
3%
8 AM
21°
3%
9 AM
23°
3%
10 AM
24°
3%
11 AM
26°
3%
12 PM
27°
3%
1 PM
31°
3%
2 PM
31°
3%
3 PM
31°
3%
4 PM
31°
3%
5 PM
32°
3%
6 PM
32°
3%
7 PM
30°
3%
8 PM
28°
3%
7-Day Forecast
Tonight
34° 19°
Clear.
Sat
33° 19°
Mostly Clear.
Sun
34° 18°
Partly Cloudy.
Mon
38° 20°
Clear with a 21% chance of rain.
Tue
29° 14°
Clear.
Wed
28° 13°
Drizzle, 51% chance.
Thu
29° 14°
Clear with a 52% chance of rain.
TimeTempConditionsPrecipWindHumidity
Now 30° Clear 3% 6 mph NE 47%
10 PM 28° Clear 3% 9 mph NE 54%
11 PM 27° Clear 3% 10 mph NE 62%
12 AM 25° Clear 3% 11 mph ENE 67%
1 AM 24° Clear 3% 10 mph ENE 69%
2 AM 23° Clear 3% 10 mph NE 70%
3 AM 22° Partly Cloudy 3% 10 mph NE 71%
4 AM 22° Partly Cloudy 3% 10 mph NE 71%
5 AM 19° Partly Cloudy 3% 10 mph NE 70%
6 AM 19° Partly Cloudy 3% 10 mph ENE 69%
7 AM 20° Partly Cloudy 3% 11 mph ENE 65%
8 AM 21° Partly Cloudy 3% 12 mph ENE 59%
9 AM 23° Mostly Clear 3% 12 mph ENE 52%
10 AM 24° Partly Cloudy 3% 11 mph ENE 45%
11 AM 26° Partly Cloudy 3% 11 mph ENE 39%
12 PM 27° Mostly Clear 3% 10 mph ENE 33%
1 PM 31° Clear 3% 10 mph ENE 29%
2 PM 31° Mostly Clear 3% 10 mph ENE 27%
3 PM 31° Mostly Clear 3% 9 mph ENE 26%
4 PM 31° Mostly Clear 3% 9 mph ENE 26%
5 PM 32° Mostly Clear 3% 9 mph ENE 27%
6 PM 32° Mostly Clear 3% 9 mph ENE 28%
7 PM 30° Clear 3% 9 mph ENE 33%
8 PM 28° Clear 3% 9 mph E 40%
15-Day Forecast
Today
7/17
Clear
3%
19°
34°
Sat
7/18
Mostly Clear
3%
19°
33°
Sun
7/19
Partly Cloudy
14%
18°
34°
Mon
7/20
Clear
21%
20°
38°
Tue
7/21
Clear
3%
14°
29°
Wed
7/22
Drizzle
51%
13°
28°
Thu
7/23
Clear
52%
14°
29°
Fri
7/24
Rain
28%
15°
28°
Sat
7/25
Drizzle
44%
14°
33°
Sun
7/26
Rain
68%
15°
32°
Mon
7/27
Clear
60%
15°
32°
Tue
7/28
Drizzle
60%
19°
35°
Wed
7/29
Drizzle
60%
19°
35°
Thu
7/30
Drizzle
60%
20°
34°
Fri
7/31
Clear
60%
19°
34°
51
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
51 AQI 9.3 µg/m³
O3
Ground-level ozone
47 AQI 51 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Today 51 Moderate 47 51
Sun 42 Good 42 34
Mon 44 Good 39 44
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
SBCAPE1237 J/kg
MLCAPE1700 J/kg
MUCAPE3037 J/kg
SBCIN-286 J/kg
MLCIN0 J/kg
Lifted Index-3.1
Kinematics
0–6 km Shear17 kt
0–1 km Shear8 kt
Eff. Shear22 kt
0–1 km SRH-7
0–3 km SRH-21
Eff. SRH-27
Storm Motion258° @ 18 kt
0–1 km EHI-0.1
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index39.5
Thermo & Levels
PWAT1.61 in
0–3 km LR7.4 °C/km
700–500 LR5.7 °C/km
Total Totals49.0
LCL812 hPa
LFC715 hPa
EL183 hPa
Freezing Lvl14,590 ft