Lake County, South Dakota, United States

Last updated: 10:37 PM CDT  ·  Refresh
28°C
Feels like 29°
Clear
▲ 34°  /  ▼ 19°
Wind
8 mph NNE
Humidity
58%
Dew Point
20°
Pressure
28.12 inHg
Visibility
10 mi
UV Index
0.0
Cloud Cover
5%
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 28°C. Dry conditions are expected through the next 24 hours. Atmospheric instability is elevated (CAPE up to 1897 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
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
30°
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%
9 PM
26°
3%
7-Day Forecast
Tonight
34° 19°
Clear.
Sat
33° 19°
Partly Cloudy.
Sun
35° 18°
Partly Cloudy.
Mon
38° 19°
Clear with a 25% chance of rain.
Tue
29° 14°
Clear.
Wed
28° 13°
Drizzle, 51% chance.
Thu
29° 14°
Rain, 52% chance.
TimeTempConditionsPrecipWindHumidity
Now 28° Clear 3% 8 mph NNE 58%
11 PM 27° Clear 3% 11 mph NE 62%
12 AM 25° Clear 3% 10 mph ENE 67%
1 AM 24° Clear 3% 10 mph ENE 70%
2 AM 23° Clear 3% 9 mph NE 72%
3 AM 22° Mostly Clear 3% 9 mph NE 76%
4 AM 22° Partly Cloudy 3% 10 mph NE 76%
5 AM 19° Partly Cloudy 3% 10 mph NE 75%
6 AM 19° Partly Cloudy 3% 10 mph ENE 74%
7 AM 20° Partly Cloudy 3% 11 mph ENE 69%
8 AM 21° Mostly Clear 3% 12 mph ENE 62%
9 AM 23° Partly Cloudy 3% 12 mph ENE 54%
10 AM 24° Partly Cloudy 3% 11 mph ENE 47%
11 AM 26° Partly Cloudy 3% 11 mph ENE 41%
12 PM 27° Mostly Clear 3% 10 mph ENE 34%
1 PM 30° Partly Cloudy 3% 10 mph ENE 30%
2 PM 31° Mostly Cloudy 3% 9 mph ENE 28%
3 PM 31° Mostly Cloudy 3% 9 mph ENE 27%
4 PM 31° Mostly Cloudy 3% 9 mph ENE 27%
5 PM 32° Mostly Cloudy 3% 9 mph ENE 28%
6 PM 32° Partly Cloudy 3% 9 mph ENE 29%
7 PM 30° Partly Cloudy 3% 9 mph ENE 34%
8 PM 28° Partly Cloudy 3% 9 mph E 42%
9 PM 26° Partly Cloudy 3% 9 mph E 49%
15-Day Forecast
Today
7/17
Clear
3%
19°
34°
Sat
7/18
Partly Cloudy
3%
19°
33°
Sun
7/19
Partly Cloudy
13%
18°
35°
Mon
7/20
Clear
25%
19°
38°
Tue
7/21
Clear
8%
14°
29°
Wed
7/22
Drizzle
51%
13°
28°
Thu
7/23
Rain
52%
14°
29°
Fri
7/24
Rain
18%
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, 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
SBCAPE1180 J/kg
MLCAPE2162 J/kg
MUCAPE3006 J/kg
SBCIN-306 J/kg
MLCIN0 J/kg
Lifted Index-3.5
Kinematics
0–6 km Shear14 kt
0–1 km Shear7 kt
Eff. Shear18 kt
0–1 km SRH-2
0–3 km SRH-19
Eff. SRH-23
Storm Motion250° @ 15 kt
0–1 km EHI-0.0
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index39.7
Thermo & Levels
PWAT1.72 in
0–3 km LR6.7 °C/km
700–500 LR5.9 °C/km
Total Totals50.3
LCL847 hPa
LFC714 hPa
EL185 hPa
Freezing Lvl14,406 ft