Extreme Heat Warning — Jefferson, IL, Wayne, IL, Edwards, IL, Wabash, IL, Perry, 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

Gallatin County, Illinois, United States

Last updated: 2:25 AM CDT  ·  Refresh
25°C
Feels like 28°
Clear
▲ 38°  /  ▼ 23°
Wind
3 mph S
Humidity
78%
Dew Point
22°
Pressure
29.55 inHg
Visibility
9 mi
UV Index
0.0
Cloud Cover
5%
Sunrise
6:25 AM
Sunset
7:17 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Gallatin County is currently clear at 25°C. Dry conditions are expected through the next 24 hours. Atmospheric instability is elevated (CAPE up to 2146 J/kg) — isolated convective development possible. Sunrise: 6:25AM · Sunset: 7:17PM.

Alerts

Extreme Heat Warning
Jefferson, IL, Wayne, IL, Edwards, IL, Wabash, IL, Perry, 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
53 AQI · Moderate Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
25°
16%
3 AM
24°
4%
4 AM
24°
4%
5 AM
23°
4%
6 AM
23°
3%
7 AM
24°
7%
8 AM
27°
7%
9 AM
31°
15%
10 AM
33°
15%
11 AM
34°
19%
12 PM
34°
19%
1 PM
37°
19%
2 PM
37°
24%
3 PM
37°
21%
4 PM
36°
34%
5 PM
38°
23%
6 PM
37°
24%
7 PM
36°
18%
8 PM
34°
18%
9 PM
28°
21%
10 PM
27°
22%
11 PM
27°
19%
12 AM
27°
19%
1 AM
27°
20%
7-Day Forecast
Today
38° 23°
Mostly Clear with a 24% chance of rain.
Sat
39° 23°
Partly Cloudy with a 51% chance of rain.
Sun
36° 17°
Partly Cloudy.
Mon
32° 13°
Haze.
Tue
38° 18°
Clear.
Wed
42° 22°
Clear.
Thu
38° 20°
Clear.
TimeTempConditionsPrecipWindHumidity
Now 25° Clear 16% 3 mph S 78%
3 AM 24° Mostly Clear 4% 2 mph S 78%
4 AM 24° Mostly Clear 4% 2 mph S 80%
5 AM 23° Mostly Clear 4% 3 mph S 80%
6 AM 23° Mostly Clear 3% 3 mph S 81%
7 AM 24° Clear 7% 3 mph SSW 79%
8 AM 27° Clear 7% 2 mph SSW 70%
9 AM 31° Clear 15% 3 mph SW 60%
10 AM 33° Clear 15% 3 mph SW 53%
11 AM 34° Clear 19% 3 mph SW 48%
12 PM 34° Mostly Clear 19% 3 mph SSW 44%
1 PM 37° Mostly Clear 19% 4 mph SSW 42%
2 PM 37° Mostly Clear 24% 5 mph SSW 42%
3 PM 37° Partly Cloudy 21% 6 mph S 43%
4 PM 36° Partly Cloudy 34% 5 mph S 45%
5 PM 38° Mostly Clear 23% 4 mph S 49%
6 PM 37° Mostly Clear 24% 4 mph S 53%
7 PM 36° Mostly Clear 18% 4 mph S 58%
8 PM 34° Mostly Clear 18% 4 mph S 64%
9 PM 28° Mostly Clear 21% 4 mph S 69%
10 PM 27° Clear 22% 4 mph SSW 71%
11 PM 27° Mostly Clear 19% 5 mph SSW 71%
12 AM 27° Mostly Clear 19% 5 mph SSW 71%
1 AM 27° Mostly Clear 20% 5 mph SSW 71%
15-Day Forecast
Today
9/4
Mostly Clear
24%
23°
38°
Sat
9/5
Partly Cloudy
51%
23°
39°
Sun
9/6
Partly Cloudy
13%
17°
36°
Mon
9/7
Haze
3%
13°
32°
Tue
9/8
Clear
3%
18°
38°
Wed
9/9
Clear
17%
22°
42°
Thu
9/10
Clear
17%
20°
38°
Fri
9/11
Rain
69%
16°
37°
Sat
9/12
Rain
44%
21°
42°
Sun
9/13
Drizzle
44%
17°
36°
Mon
9/14
Drizzle
60%
21°
38°
Tue
9/15
Drizzle
60%
22°
38°
Wed
9/16
Drizzle
60%
21°
37°
Thu
9/17
Clear
60%
19°
34°
Fri
9/18
Clear
25%
18°
34°
53
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
53 AQI 10.4 µg/m³
O3
Ground-level ozone
44 AQI 48 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Today 53 Moderate 44 53
Sat 57 Moderate 43 57
Sun 55 Moderate 42 55
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 Fri Sep 4, 06:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE262 J/kg
MLCAPE573 J/kg
MUCAPE846 J/kg
SBCIN-478 J/kg
MLCIN-220 J/kg
Lifted Index-0.8
Kinematics
0–6 km Shear6 kt
0–1 km Shear11 kt
Eff. Shear2 kt
0–1 km SRH13
0–3 km SRH11
Eff. SRH-3
Storm Motion343° @ 10 kt
0–1 km EHI0.0
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index35.8
Thermo & Levels
PWAT1.64 in
0–3 km LR5.0 °C/km
700–500 LR5.2 °C/km
Total Totals46.3
LCL953 hPa
LFC559 hPa
EL287 hPa
Freezing Lvl16,453 ft