McCook County, South Dakota, United States

Last updated: 9:40 PM CDT  ·  Refresh
30°C
Feels like 30°
Clear
▲ 35°  /  ▼ 20°
Wind
7 mph S
Humidity
44%
Dew Point
18°
Pressure
28.30 inHg
Visibility
10 mi
UV Index
0.0
Cloud Cover
6%
Sunrise
6:03 AM
Sunset
9:07 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: McCook County is currently clear at 30°C. Dry conditions are expected through the next 24 hours. Atmospheric instability is elevated (CAPE up to 1212 J/kg) — isolated convective development possible. Sunrise: 6:03AM · Sunset: 9:07PM.

Alerts

No active alerts for this location.
50 AQI · Good Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
30°
3%
10 PM
28°
3%
11 PM
27°
3%
12 AM
26°
3%
1 AM
25°
3%
2 AM
24°
3%
3 AM
23°
3%
4 AM
23°
3%
5 AM
20°
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
31°
3%
2 PM
32°
3%
3 PM
32°
3%
4 PM
32°
3%
5 PM
32°
3%
6 PM
32°
3%
7 PM
31°
3%
8 PM
29°
3%
7-Day Forecast
Tonight
35° 20°
Clear.
Sat
34° 20°
Partly Cloudy.
Sun
36° 20°
Partly Cloudy.
Mon
40° 21°
Partly Cloudy.
Tue
31° 16°
Clear.
Wed
26° 13°
Drizzle, 51% chance.
Thu
29° 14°
Clear with a 52% chance of rain.
TimeTempConditionsPrecipWindHumidity
Now 30° Clear 3% 7 mph S 44%
10 PM 28° Clear 3% 6 mph SSE 48%
11 PM 27° Clear 3% 4 mph ESE 54%
12 AM 26° Clear 3% 6 mph E 59%
1 AM 25° Clear 3% 8 mph ENE 64%
2 AM 24° Clear 3% 10 mph ENE 68%
3 AM 23° Mostly Clear 3% 11 mph ENE 71%
4 AM 23° Partly Cloudy 3% 12 mph ENE 71%
5 AM 20° Mostly Clear 3% 12 mph ENE 70%
6 AM 20° Partly Cloudy 3% 12 mph ENE 69%
7 AM 21° Partly Cloudy 3% 12 mph ENE 66%
8 AM 22° Partly Cloudy 3% 12 mph ENE 61%
9 AM 23° Partly Cloudy 3% 12 mph ENE 55%
10 AM 25° Partly Cloudy 3% 11 mph ENE 50%
11 AM 27° Partly Cloudy 3% 10 mph ENE 44%
12 PM 28° Partly Cloudy 3% 10 mph ENE 39%
1 PM 31° Partly Cloudy 3% 9 mph E 35%
2 PM 32° Partly Cloudy 3% 9 mph E 32%
3 PM 32° Mostly Cloudy 3% 9 mph E 29%
4 PM 32° Partly Cloudy 3% 9 mph E 28%
5 PM 32° Partly Cloudy 3% 9 mph E 28%
6 PM 32° Mostly Clear 3% 9 mph E 28%
7 PM 31° Mostly Clear 3% 9 mph E 32%
8 PM 29° Mostly Clear 3% 10 mph E 38%
15-Day Forecast
Today
7/17
Clear
3%
20°
35°
Sat
7/18
Partly Cloudy
3%
20°
34°
Sun
7/19
Partly Cloudy
7%
20°
36°
Mon
7/20
Partly Cloudy
7%
21°
40°
Tue
7/21
Clear
3%
16°
31°
Wed
7/22
Drizzle
51%
13°
26°
Thu
7/23
Clear
52%
14°
29°
Fri
7/24
Rain
27%
15°
29°
Sat
7/25
Drizzle
44%
14°
34°
Sun
7/26
Rain
68%
17°
33°
Mon
7/27
Clear
60%
16°
33°
Tue
7/28
Drizzle
60%
21°
36°
Wed
7/29
Drizzle
60%
20°
36°
Thu
7/30
Clear
60%
21°
35°
Fri
7/31
Clear
60%
21°
35°
50
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
50 AQI 9.0 µg/m³
O3
Ground-level ozone
48 AQI 53 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Today 50 Good 48 50
Sun 43 Good 43 35
Mon 41 Good 41 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
SBCAPE572 J/kg
MLCAPE6 J/kg
MUCAPE579 J/kg
SBCIN-420 J/kg
MLCIN0 J/kg
Lifted Index-2.0
Kinematics
0–6 km Shear21 kt
0–1 km Shear9 kt
Eff. Shear22 kt
0–1 km SRH17
0–3 km SRH-22
Eff. SRH-39
Storm Motion270° @ 20 kt
0–1 km EHI0.1
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index35.0
Thermo & Levels
PWAT1.34 in
0–3 km LR7.2 °C/km
700–500 LR5.8 °C/km
Total Totals44.7
LCL807 hPa
LFC697 hPa
EL198 hPa
Freezing Lvl14,865 ft