Heat Advisory — Jefferson, IL, Perry, IL, Franklin, IL, Jackson, IL, Williamson, IL, Union, IL, Johnson, IL, Pope, IL, Alexander, IL, Pulaski, IL, Massac, IL, Fulton, KY, Hickman, KY, Carlisle, KY, Ballard, KY, McCracken, KY, Graves, KY, Livingston, KY, Marshall, KY, Calloway, 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 7:00 PM

Jackson County, Illinois, United States

Last updated: 12:12 PM CDT  ·  Refresh
33°C
Feels like 41°
Partly Cloudy
▲ 37°  /  ▼ 24°
Wind
4 mph SW
Humidity
64%
Dew Point
26°
Pressure
29.47 inHg
Visibility
10 mi
UV Index
8.8
Cloud Cover
47%
Sunrise
5:56 AM
Sunset
8:11 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Jackson County is currently partly cloudy at 33°C. Dry conditions are expected through the next 24 hours. Atmospheric instability is elevated (CAPE up to 4342 J/kg) — isolated convective development possible. Sunrise: 5:56AM · Sunset: 8:11PM.

Alerts

Heat Advisory
Jefferson, IL, Perry, IL, Franklin, IL, Jackson, IL, Williamson, IL, Union, IL, Johnson, IL, Pope, IL, Alexander, IL, Pulaski, IL, Massac, IL, Fulton, KY, Hickman, KY, Carlisle, KY, Ballard, KY, McCracken, KY, Graves, KY, Livingston, KY, Marshall, KY, Calloway, 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 7:00 PM
47 AQI · Good Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
33°
14%
1 PM
34°
32%
2 PM
35°
33%
3 PM
36°
36%
4 PM
36°
30%
5 PM
37°
24%
6 PM
36°
34%
7 PM
34°
26%
8 PM
33°
30%
9 PM
31°
26%
10 PM
30°
18%
11 PM
29°
18%
12 AM
29°
12%
1 AM
28°
9%
2 AM
27°
9%
3 AM
27°
9%
4 AM
26°
5%
5 AM
24°
5%
6 AM
24°
5%
7 AM
25°
3%
8 AM
27°
10%
9 AM
28°
10%
10 AM
29°
24%
11 AM
32°
28%
7-Day Forecast
Today
37° 24°
Mostly Clear with a 36% chance of rain.
Mon
37° 24°
Mostly Clear with a 40% chance of rain.
Tue
36° 22°
Mostly Clear with a 67% chance of rain.
Wed
31° 19°
Clear with a 51% chance of rain.
Thu
32° 18°
Clear.
Fri
29° 20°
Drizzle, 60% chance.
Sat
30° 19°
Drizzle, 60% chance.
TimeTempConditionsPrecipWindHumidity
Now 33° Partly Cloudy 14% 4 mph SW 64%
1 PM 34° Mostly Clear 32% 5 mph WSW 59%
2 PM 35° Partly Cloudy 33% 5 mph WSW 59%
3 PM 36° Mostly Clear 36% 6 mph WSW 57%
4 PM 36° Partly Cloudy 30% 6 mph WSW 56%
5 PM 37° Mostly Clear 24% 6 mph WSW 59%
6 PM 36° Mostly Clear 34% 5 mph SW 63%
7 PM 34° Mostly Clear 26% 4 mph SW 69%
8 PM 33° Mostly Clear 30% 4 mph SSW 74%
9 PM 31° Partly Cloudy 26% 4 mph SW 76%
10 PM 30° Mostly Cloudy 18% 4 mph SW 78%
11 PM 29° Mostly Cloudy 18% 4 mph SSW 82%
12 AM 29° Mostly Cloudy 12% 5 mph S 86%
1 AM 28° Partly Cloudy 9% 6 mph SSE 89%
2 AM 27° Partly Cloudy 9% 6 mph S 90%
3 AM 27° Partly Cloudy 9% 6 mph S 91%
4 AM 26° Partly Cloudy 5% 7 mph S 92%
5 AM 24° Partly Cloudy 5% 7 mph S 90%
6 AM 24° Mostly Clear 5% 7 mph S 88%
7 AM 25° Mostly Clear 3% 7 mph SSW 86%
8 AM 27° Mostly Clear 10% 6 mph SSW 80%
9 AM 28° Mostly Clear 10% 6 mph SSW 77%
10 AM 29° Mostly Clear 24% 6 mph SW 73%
11 AM 32° Mostly Clear 28% 5 mph SW 69%
15-Day Forecast
Today
7/26
Mostly Clear
36%
24°
37°
Mon
7/27
Mostly Clear
40%
24°
37°
Tue
7/28
Mostly Clear
67%
22°
36°
Wed
7/29
Clear
51%
19°
31°
Thu
7/30
Clear
19%
18°
32°
Fri
7/31
Drizzle
60%
20°
29°
Sat
8/1
Drizzle
60%
19°
30°
Sun
8/2
Drizzle
60%
19°
30°
Mon
8/3
Drizzle
60%
19°
32°
Tue
8/4
Drizzle
60%
21°
34°
Wed
8/5
Drizzle
60%
22°
34°
Thu
8/6
Drizzle
60%
22°
32°
Fri
8/7
Drizzle
60%
21°
32°
Sat
8/8
Drizzle
60%
21°
33°
Sun
8/9
Drizzle
60%
22°
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 8.6 µg/m³
O3
Ground-level ozone
34 AQI 37 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Mon 47 Good 34 47
Tue 52 Moderate 31 52
Wed 42 Good 42 37
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 Sun Jul 26, 15:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE5103 J/kg
MLCAPE3423 J/kg
MUCAPE5103 J/kg
SBCIN0 J/kg
MLCIN0 J/kg
Lifted Index-8.7
Kinematics
0–6 km Shear20 kt
0–1 km Shear5 kt
Eff. Shear25 kt
0–1 km SRH-9
0–3 km SRH-46
Eff. SRH-46
Storm Motion291° @ 19 kt
0–1 km EHI-0.3
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index37.5
Thermo & Levels
PWAT1.96 in
0–3 km LR7.0 °C/km
700–500 LR5.8 °C/km
Total Totals48.1
LCL905 hPa
LFC998 hPa
EL125 hPa
Freezing Lvl16,818 ft