Heat Advisory — Jefferson, IL, Wayne, IL, Edwards, IL, Wabash, IL, Franklin, IL, Hamilton, IL, White, IL, Jackson, IL, Williamson, IL, Saline, IL, Gallatin, IL, Union, IL, Johnson, IL, Pope, IL, Hardin, IL, Alexander, IL, Pulaski, IL, Massac, IL, Gibson, IN, Pike, IN, Posey, IN, Vanderburgh, IN, Warrick, IN, Spencer, IN, Fulton, KY, Hickman, KY, Carlisle, KY, Ballard, KY, McCracken, KY, Graves, KY, Livingston, KY, Marshall, KY, Calloway, KY, Crittenden, KY, Lyon, KY, Trigg, KY, Caldwell, KY, Union, KY, Webster, KY, Hopkins, KY, Christian, KY, Henderson, KY, Daviess, KY, McLean, KY, Muhlenberg, KY, Todd, KY, Perry, MO, Bollinger, MO, Cape Girardeau, MO, Wayne, MO, Carter, MO, Ripley, MO, Butler, MO, Stoddard, MO, Scott, MO, Mississippi, MO, New Madrid, MO 8:00 PM

Marshall County, Kentucky, United States

Last updated: 8:08 AM CDT  ·  Refresh
25°C
Feels like 27°
Mostly Clear
▲ 33°  /  ▼ 23°
Wind
7 mph SSW
Humidity
83%
Dew Point
22°
Pressure
29.63 inHg
Visibility
9 mi
UV Index
5.3
Cloud Cover
19%
Sunrise
6:06 AM
Sunset
7:50 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Marshall County is currently mostly clear at 25°C. Dry conditions are expected through the next 24 hours. Atmospheric instability is elevated (CAPE up to 3707 J/kg) — isolated convective development possible. Sunrise: 6:06AM · Sunset: 7:50PM.

Alerts

Heat Advisory
Jefferson, IL, Wayne, IL, Edwards, IL, Wabash, IL, Franklin, IL, Hamilton, IL, White, IL, Jackson, IL, Williamson, IL, Saline, IL, Gallatin, IL, Union, IL, Johnson, IL, Pope, IL, Hardin, IL, Alexander, IL, Pulaski, IL, Massac, IL, Gibson, IN, Pike, IN, Posey, IN, Vanderburgh, IN, Warrick, IN, Spencer, IN, Fulton, KY, Hickman, KY, Carlisle, KY, Ballard, KY, McCracken, KY, Graves, KY, Livingston, KY, Marshall, KY, Calloway, KY, Crittenden, KY, Lyon, KY, Trigg, KY, Caldwell, KY, Union, KY, Webster, KY, Hopkins, KY, Christian, KY, Henderson, KY, Daviess, KY, McLean, KY, Muhlenberg, KY, Todd, KY, Perry, MO, Bollinger, MO, Cape Girardeau, MO, Wayne, MO, Carter, MO, Ripley, MO, Butler, MO, Stoddard, MO, Scott, MO, Mississippi, MO, New Madrid, MO
Expires 8:00 PM
35 AQI · Good Dominant: O3 Air Quality
Hourly Forecast · Next 24 Hours
Now
25°
15%
9 AM
26°
18%
10 AM
28°
18%
11 AM
29°
15%
12 PM
30°
8%
1 PM
32°
4%
2 PM
32°
4%
3 PM
33°
4%
4 PM
33°
4%
5 PM
32°
7%
6 PM
31°
7%
7 PM
30°
7%
8 PM
29°
7%
9 PM
27°
4%
10 PM
26°
4%
11 PM
26°
4%
12 AM
25°
4%
1 AM
25°
3%
2 AM
24°
5%
3 AM
24°
5%
4 AM
24°
5%
5 AM
24°
5%
6 AM
24°
9%
7 AM
24°
9%
7-Day Forecast
Today
33° 23°
Mostly Clear.
Tue
34° 24°
Mostly Clear.
Wed
35° 24°
Mostly Clear with a 25% chance of rain.
Thu
34° 24°
Clear with a 58% chance of rain.
Fri
33° 23°
Clear with a 47% chance of rain.
Sat
35° 23°
Clear.
Sun
36° 24°
Clear.
TimeTempConditionsPrecipWindHumidity
Now 25° Mostly Clear 15% 7 mph SSW 83%
9 AM 26° Clear 18% 9 mph SW 76%
10 AM 28° Clear 18% 10 mph SW 72%
11 AM 29° Clear 15% 10 mph SW 69%
12 PM 30° Clear 8% 10 mph SW 65%
1 PM 32° Clear 4% 10 mph SW 62%
2 PM 32° Clear 4% 10 mph SW 60%
3 PM 33° Partly Cloudy 4% 10 mph SW 58%
4 PM 33° Mostly Clear 4% 10 mph SW 58%
5 PM 32° Mostly Clear 7% 9 mph SW 62%
6 PM 31° Clear 7% 8 mph SW 67%
7 PM 30° Clear 7% 6 mph SSW 73%
8 PM 29° Mostly Clear 7% 6 mph SSW 75%
9 PM 27° Mostly Clear 4% 6 mph SSW 77%
10 PM 26° Mostly Clear 4% 7 mph SSW 79%
11 PM 26° Clear 4% 7 mph SSW 79%
12 AM 25° Clear 4% 8 mph SSW 80%
1 AM 25° Clear 3% 8 mph SSW 80%
2 AM 24° Clear 5% 8 mph SSW 82%
3 AM 24° Mostly Clear 5% 8 mph SSW 84%
4 AM 24° Mostly Clear 5% 8 mph SSW 86%
5 AM 24° Mostly Clear 5% 8 mph SSW 86%
6 AM 24° Mostly Clear 9% 8 mph SSW 86%
7 AM 24° Partly Cloudy 9% 9 mph SSW 86%
15-Day Forecast
Today
8/10
Mostly Clear
15%
23°
33°
Tue
8/11
Mostly Clear
9%
24°
34°
Wed
8/12
Mostly Clear
25%
24°
35°
Thu
8/13
Clear
58%
24°
34°
Fri
8/14
Clear
47%
23°
33°
Sat
8/15
Clear
15%
23°
35°
Sun
8/16
Clear
15%
24°
36°
Mon
8/17
Thunderstorm
53%
22°
33°
Tue
8/18
Mostly Clear
47%
21°
33°
Wed
8/19
Clear
44%
22°
32°
Thu
8/20
Drizzle
60%
23°
34°
Fri
8/21
Drizzle
60%
22°
33°
Sat
8/22
Drizzle
60%
21°
33°
Sun
8/23
Clear
60%
21°
33°
Mon
8/24
Clear
60%
21°
33°
35
Good
U.S. Air Quality Index · Dominant: O3
50 100 150 200

Air quality is satisfactory and poses little or no health risk.

Pollutant Breakdown · Today
PM2.5
Fine particulate matter
30 AQI 5.4 µg/m³
O3
Ground-level ozone
Dominant
35 AQI 38 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Tue 35 Good 35 30
Wed 38 Good 38 15
Thu 37 Good 37 24
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 Mon Aug 10, 11:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE1170 J/kg
MLCAPE1167 J/kg
MUCAPE1364 J/kg
SBCIN0 J/kg
MLCIN0 J/kg
Lifted Index-5.4
Kinematics
0–6 km Shear6 kt
0–1 km Shear17 kt
Eff. Shear6 kt
0–1 km SRH71
0–3 km SRH62
Eff. SRH62
Storm Motion54° @ 8 kt
0–1 km EHI0.5
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index28.4
Thermo & Levels
PWAT1.69 in
0–3 km LR4.2 °C/km
700–500 LR7.7 °C/km
Total Totals52.0
LCL963 hPa
LFC1003 hPa
EL208 hPa
Freezing Lvl14,793 ft