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

Franklin County, Illinois, United States

Last updated: 8:07 AM CDT  ·  Refresh
26°C
Feels like 27°
Mostly Clear
▲ 35°  /  ▼ 23°
Wind
10 mph SSW
Humidity
80%
Dew Point
22°
Pressure
29.57 inHg
Visibility
10 mi
UV Index
5.2
Cloud Cover
23%
Sunrise
6:06 AM
Sunset
7:54 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Franklin County is currently mostly clear at 26°C. Dry conditions are expected through the next 24 hours. Atmospheric instability is elevated (CAPE up to 3247 J/kg) — isolated convective development possible. Sunrise: 6:06AM · Sunset: 7:54PM.

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
44 AQI · Good Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
26°
15%
9 AM
27°
21%
10 AM
29°
21%
11 AM
30°
21%
12 PM
32°
15%
1 PM
34°
3%
2 PM
34°
3%
3 PM
34°
3%
4 PM
34°
3%
5 PM
35°
3%
6 PM
34°
3%
7 PM
33°
3%
8 PM
32°
3%
9 PM
29°
3%
10 PM
28°
3%
11 PM
28°
3%
12 AM
28°
6%
1 AM
27°
6%
2 AM
27°
6%
3 AM
27°
5%
4 AM
26°
5%
5 AM
25°
5%
6 AM
25°
5%
7 AM
24°
5%
7-Day Forecast
Today
35° 23°
Partly Cloudy with a 21% chance of rain.
Tue
37° 24°
Mostly Clear.
Wed
38° 24°
Partly Cloudy with a 60% chance of rain.
Thu
36° 23°
Partly Cloudy with a 81% chance of rain.
Fri
32° 23°
Drizzle, 67% chance.
Sat
36° 22°
Clear with a 46% chance of rain.
Sun
36° 23°
Clear with a 27% chance of rain.
TimeTempConditionsPrecipWindHumidity
Now 26° Mostly Clear 15% 10 mph SSW 80%
9 AM 27° Partly Cloudy 21% 11 mph SW 70%
10 AM 29° Partly Cloudy 21% 12 mph SW 64%
11 AM 30° Partly Cloudy 21% 12 mph SW 59%
12 PM 32° Partly Cloudy 15% 12 mph SW 55%
1 PM 34° Partly Cloudy 3% 13 mph SW 51%
2 PM 34° Partly Cloudy 3% 13 mph SW 50%
3 PM 34° Partly Cloudy 3% 12 mph SW 49%
4 PM 34° Partly Cloudy 3% 12 mph SW 49%
5 PM 35° Mostly Clear 3% 11 mph SW 52%
6 PM 34° Mostly Clear 3% 10 mph SSW 55%
7 PM 33° Mostly Clear 3% 8 mph SSW 60%
8 PM 32° Mostly Clear 3% 8 mph SSW 64%
9 PM 29° Mostly Clear 3% 8 mph SSW 69%
10 PM 28° Clear 3% 8 mph SSW 72%
11 PM 28° Partly Cloudy 3% 9 mph SSW 71%
12 AM 28° Partly Cloudy 6% 10 mph SSW 70%
1 AM 27° Partly Cloudy 6% 10 mph SSW 70%
2 AM 27° Partly Cloudy 6% 10 mph SSW 71%
3 AM 27° Partly Cloudy 5% 10 mph SSW 72%
4 AM 26° Partly Cloudy 5% 10 mph SSW 73%
5 AM 25° Partly Cloudy 5% 10 mph SSW 75%
6 AM 25° Partly Cloudy 5% 10 mph SSW 77%
7 AM 24° Clear 5% 10 mph SSW 78%
15-Day Forecast
Today
8/10
Partly Cloudy
21%
23°
35°
Tue
8/11
Mostly Clear
11%
24°
37°
Wed
8/12
Partly Cloudy
60%
24°
38°
Thu
8/13
Partly Cloudy
81%
23°
36°
Fri
8/14
Drizzle
67%
23°
32°
Sat
8/15
Clear
46%
22°
36°
Sun
8/16
Clear
27%
23°
36°
Mon
8/17
Partly Cloudy
39%
21°
32°
Tue
8/18
Rain
54%
18°
33°
Wed
8/19
Thunderstorm
47%
21°
35°
Thu
8/20
Clear
60%
22°
34°
Fri
8/21
Drizzle
60%
21°
33°
Sat
8/22
Clear
60%
21°
33°
Sun
8/23
Drizzle
60%
21°
33°
Mon
8/24
Clear
60%
20°
32°
44
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
44 AQI 8.0 µg/m³
O3
Ground-level ozone
43 AQI 46 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Tue 44 Good 43 44
Wed 38 Good 38 19
Thu 42 Good 42 31
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 50 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE1798 J/kg
MLCAPE1622 J/kg
MUCAPE1880 J/kg
SBCIN0 J/kg
MLCIN0 J/kg
Lifted Index-7.2
Kinematics
0–6 km Shear12 kt
0–1 km Shear24 kt
Eff. Shear11 kt
0–1 km SRH172
0–3 km SRH170
Eff. SRH170
Storm Motion355° @ 5 kt
0–1 km EHI1.9
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index26.4
Thermo & Levels
PWAT1.58 in
0–3 km LR4.5 °C/km
700–500 LR8.0 °C/km
Total Totals53.1
LCL955 hPa
LFC1001 hPa
EL192 hPa
Freezing Lvl14,783 ft