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

Union County, Kentucky, United States

Last updated: 8:06 AM CDT  ·  Refresh
25°C
Feels like 27°
Mostly Clear
▲ 34°  /  ▼ 23°
Wind
9 mph SSW
Humidity
83%
Dew Point
22°
Pressure
29.61 inHg
Visibility
9 mi
UV Index
5.3
Cloud Cover
10%
Sunrise
6:03 AM
Sunset
7:50 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Union County is currently mostly clear at 25°C. Dry conditions are expected through the next 24 hours. Atmospheric instability is elevated (CAPE up to 3876 J/kg) — isolated convective development possible. Sunrise: 6:03AM · 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
47 AQI · Good Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
25°
15%
9 AM
26°
23%
10 AM
28°
23%
11 AM
29°
23%
12 PM
31°
15%
1 PM
33°
7%
2 PM
33°
7%
3 PM
33°
7%
4 PM
33°
7%
5 PM
33°
7%
6 PM
32°
3%
7 PM
31°
3%
8 PM
30°
3%
9 PM
28°
3%
10 PM
27°
11%
11 PM
27°
11%
12 AM
27°
11%
1 AM
26°
11%
2 AM
26°
11%
3 AM
25°
11%
4 AM
25°
4%
5 AM
24°
4%
6 AM
24°
4%
7 AM
24°
5%
7-Day Forecast
Today
34° 23°
Mostly Clear with a 23% chance of rain.
Tue
36° 24°
Mostly Clear with a 23% chance of rain.
Wed
37° 24°
Mostly Clear with a 60% chance of rain.
Thu
34° 24°
Mostly Clear with a 68% chance of rain.
Fri
32° 22°
Partly Cloudy with a 51% chance of rain.
Sat
35° 22°
Clear with a 41% chance of rain.
Sun
36° 24°
Clear with a 28% chance of rain.
TimeTempConditionsPrecipWindHumidity
Now 25° Mostly Clear 15% 9 mph SSW 83%
9 AM 26° Clear 23% 11 mph SW 77%
10 AM 28° Clear 23% 12 mph SW 72%
11 AM 29° Mostly Clear 23% 12 mph SW 68%
12 PM 31° Clear 15% 12 mph SW 64%
1 PM 33° Partly Cloudy 7% 12 mph SW 60%
2 PM 33° Partly Cloudy 7% 12 mph SW 60%
3 PM 33° Mostly Clear 7% 12 mph SW 60%
4 PM 33° Partly Cloudy 7% 12 mph SSW 60%
5 PM 33° Partly Cloudy 7% 10 mph SW 64%
6 PM 32° Partly Cloudy 3% 8 mph SSW 69%
7 PM 31° Partly Cloudy 3% 7 mph SSW 74%
8 PM 30° Partly Cloudy 3% 7 mph SSW 75%
9 PM 28° Mostly Clear 3% 7 mph SSW 76%
10 PM 27° Mostly Clear 11% 7 mph SSW 77%
11 PM 27° Mostly Clear 11% 7 mph SSW 78%
12 AM 27° Mostly Clear 11% 8 mph SSW 80%
1 AM 26° Partly Cloudy 11% 8 mph SSW 81%
2 AM 26° Partly Cloudy 11% 9 mph SSW 82%
3 AM 25° Partly Cloudy 11% 9 mph SSW 82%
4 AM 25° Partly Cloudy 4% 9 mph SSW 84%
5 AM 24° Mostly Clear 4% 9 mph SSW 84%
6 AM 24° Mostly Clear 4% 10 mph SSW 85%
7 AM 24° Clear 5% 10 mph SSW 86%
15-Day Forecast
Today
8/10
Mostly Clear
23%
23°
34°
Tue
8/11
Mostly Clear
23%
24°
36°
Wed
8/12
Mostly Clear
60%
24°
37°
Thu
8/13
Mostly Clear
68%
24°
34°
Fri
8/14
Partly Cloudy
51%
22°
32°
Sat
8/15
Clear
41%
22°
35°
Sun
8/16
Clear
28%
24°
36°
Mon
8/17
Drizzle
59%
21°
32°
Tue
8/18
Mostly Clear
35%
19°
32°
Wed
8/19
Thunderstorm
45%
21°
33°
Thu
8/20
Drizzle
60%
22°
34°
Fri
8/21
Drizzle
60%
21°
33°
Sat
8/22
Clear
60%
21°
33°
Sun
8/23
Drizzle
60%
21°
34°
Mon
8/24
Clear
60%
20°
33°
47
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
47 AQI 8.4 µg/m³
O3
Ground-level ozone
42 AQI 46 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Tue 47 Good 42 47
Wed 40 Good 40 26
Thu 39 Good 39 28
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
SBCAPE1309 J/kg
MLCAPE1327 J/kg
MUCAPE1460 J/kg
SBCIN0 J/kg
MLCIN0 J/kg
Lifted Index-6.1
Kinematics
0–6 km Shear12 kt
0–1 km Shear18 kt
Eff. Shear10 kt
0–1 km SRH107
0–3 km SRH124
Eff. SRH124
Storm Motion7° @ 7 kt
0–1 km EHI0.9
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index26.9
Thermo & Levels
PWAT1.62 in
0–3 km LR4.2 °C/km
700–500 LR7.9 °C/km
Total Totals52.9
LCL964 hPa
LFC1003 hPa
EL200 hPa
Freezing Lvl14,823 ft