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

Perry County, Illinois, United States

Last updated: 12:12 PM CDT  ·  Refresh
32°C
Feels like 41°
Partly Cloudy
▲ 37°  /  ▼ 23°
Wind
4 mph SW
Humidity
70%
Dew Point
26°
Pressure
29.47 inHg
Visibility
10 mi
UV Index
8.6
Cloud Cover
51%
Sunrise
5:55 AM
Sunset
8:12 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Perry County is currently partly cloudy at 32°C. Dry conditions are expected through the next 24 hours. Atmospheric instability is elevated (CAPE up to 4277 J/kg) — isolated convective development possible. Sunrise: 5:55AM · Sunset: 8:12PM.

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
32°
14%
1 PM
34°
32%
2 PM
34°
18%
3 PM
36°
21%
4 PM
36°
13%
5 PM
37°
22%
6 PM
36°
22%
7 PM
34°
31%
8 PM
33°
36%
9 PM
31°
41%
10 PM
29°
41%
11 PM
29°
41%
12 AM
28°
29%
1 AM
27°
11%
2 AM
26°
11%
3 AM
26°
11%
4 AM
25°
12%
5 AM
24°
12%
6 AM
24°
3%
7 AM
24°
3%
8 AM
26°
5%
9 AM
28°
13%
10 AM
29°
13%
11 AM
32°
14%
7-Day Forecast
Today
37° 23°
Partly Cloudy with a 41% chance of rain.
Mon
38° 24°
Mostly Clear with a 40% chance of rain.
Tue
35° 22°
Mostly Clear with a 49% chance of rain.
Wed
31° 19°
Clear with a 51% chance of rain.
Thu
31° 18°
Clear.
Fri
29° 19°
Drizzle, 60% chance.
Sat
30° 18°
Drizzle, 60% chance.
TimeTempConditionsPrecipWindHumidity
Now 32° Partly Cloudy 14% 4 mph SW 70%
1 PM 34° Partly Cloudy 32% 5 mph WSW 69%
2 PM 34° Mostly Clear 18% 5 mph WSW 66%
3 PM 36° Partly Cloudy 21% 6 mph WSW 62%
4 PM 36° Clear 13% 7 mph WSW 59%
5 PM 37° Clear 22% 6 mph WSW 61%
6 PM 36° Mostly Clear 22% 5 mph SW 64%
7 PM 34° Partly Cloudy 31% 3 mph SSW 70%
8 PM 33° Mostly Clear 36% 5 mph SSW 74%
9 PM 31° Partly Cloudy 41% 5 mph SSW 77%
10 PM 29° Mostly Cloudy 41% 4 mph SSW 79%
11 PM 29° Mostly Cloudy 41% 2 mph S 82%
12 AM 28° Partly Cloudy 29% 4 mph SE 85%
1 AM 27° Mostly Cloudy 11% 5 mph ESE 88%
2 AM 26° Partly Cloudy 11% 5 mph SE 90%
3 AM 26° Partly Cloudy 11% 6 mph SSE 91%
4 AM 25° Partly Cloudy 12% 7 mph SSE 93%
5 AM 24° Partly Cloudy 12% 7 mph S 92%
6 AM 24° Mostly Clear 3% 7 mph S 91%
7 AM 24° Mostly Clear 3% 7 mph SSW 89%
8 AM 26° Mostly Clear 5% 7 mph SSW 85%
9 AM 28° Mostly Clear 13% 7 mph SSW 82%
10 AM 29° Clear 13% 7 mph SW 78%
11 AM 32° Mostly Clear 14% 6 mph SSW 73%
15-Day Forecast
Today
7/26
Partly Cloudy
41%
23°
37°
Mon
7/27
Mostly Clear
40%
24°
38°
Tue
7/28
Mostly Clear
49%
22°
35°
Wed
7/29
Clear
51%
19°
31°
Thu
7/30
Clear
19%
18°
31°
Fri
7/31
Drizzle
60%
19°
29°
Sat
8/1
Drizzle
60%
18°
30°
Sun
8/2
Drizzle
60%
19°
30°
Mon
8/3
Drizzle
60%
19°
32°
Tue
8/4
Drizzle
60%
21°
33°
Wed
8/5
Drizzle
60%
22°
34°
Thu
8/6
Drizzle
60%
21°
32°
Fri
8/7
Drizzle
60%
20°
32°
Sat
8/8
Drizzle
60%
20°
33°
Sun
8/9
Drizzle
60%
21°
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
45 AQI 49 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Mon 47 Good 45 47
Tue 52 Moderate 32 52
Wed 41 Good 41 39
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
SBCAPE5312 J/kg
MLCAPE3811 J/kg
MUCAPE5312 J/kg
SBCIN0 J/kg
MLCIN0 J/kg
Lifted Index-9.4
Kinematics
0–6 km Shear20 kt
0–1 km Shear5 kt
Eff. Shear25 kt
0–1 km SRH-7
0–3 km SRH-44
Eff. SRH-44
Storm Motion288° @ 19 kt
0–1 km EHI-0.2
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index38.6
Thermo & Levels
PWAT2.00 in
0–3 km LR6.6 °C/km
700–500 LR6.2 °C/km
Total Totals49.9
LCL916 hPa
LFC998 hPa
EL125 hPa
Freezing Lvl16,765 ft