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

Alexander County, Illinois, United States

Last updated: 12:12 PM CDT  ·  Refresh
32°C
Feels like 41°
Mostly Clear
▲ 37°  /  ▼ 24°
Wind
5 mph SSW
Humidity
71%
Dew Point
27°
Pressure
29.53 inHg
Visibility
10 mi
UV Index
9.5
Cloud Cover
15%
Sunrise
5:57 AM
Sunset
8:09 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Alexander County is currently mostly clear at 32°C. Dry conditions are expected through the next 24 hours. Atmospheric instability is elevated (CAPE up to 4294 J/kg) — isolated convective development possible. Sunrise: 5:57AM · Sunset: 8:09PM.

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
52 AQI · Moderate Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
32°
7%
1 PM
34°
18%
2 PM
34°
23%
3 PM
35°
23%
4 PM
36°
10%
5 PM
36°
10%
6 PM
35°
8%
7 PM
34°
13%
8 PM
33°
13%
9 PM
30°
17%
10 PM
29°
5%
11 PM
29°
5%
12 AM
28°
5%
1 AM
28°
5%
2 AM
27°
5%
3 AM
27°
5%
4 AM
26°
5%
5 AM
24°
5%
6 AM
24°
3%
7 AM
25°
3%
8 AM
27°
10%
9 AM
28°
10%
10 AM
29°
21%
11 AM
32°
24%
7-Day Forecast
Today
37° 24°
Clear with a 23% chance of rain.
Mon
37° 24°
Mostly Clear with a 25% chance of rain.
Tue
38° 24°
Clear with a 49% chance of rain.
Wed
31° 21°
Mostly Clear with a 51% chance of rain.
Thu
32° 19°
Clear.
Fri
30° 21°
Drizzle, 60% chance.
Sat
31° 19°
Clear with a 60% chance of rain.
TimeTempConditionsPrecipWindHumidity
Now 32° Mostly Clear 7% 5 mph SSW 71%
1 PM 34° Mostly Clear 18% 6 mph SW 63%
2 PM 34° Clear 23% 6 mph SW 63%
3 PM 35° Clear 23% 6 mph SW 62%
4 PM 36° Clear 10% 7 mph SW 60%
5 PM 36° Mostly Clear 10% 8 mph SW 63%
6 PM 35° Clear 8% 7 mph SW 66%
7 PM 34° Clear 13% 6 mph SSW 71%
8 PM 33° Mostly Clear 13% 6 mph SSW 72%
9 PM 30° Partly Cloudy 17% 5 mph SW 74%
10 PM 29° Partly Cloudy 5% 4 mph SW 74%
11 PM 29° Mostly Cloudy 5% 4 mph SW 77%
12 AM 28° Mostly Cloudy 5% 4 mph S 80%
1 AM 28° Partly Cloudy 5% 5 mph SE 82%
2 AM 27° Partly Cloudy 5% 6 mph SSE 85%
3 AM 27° Partly Cloudy 5% 6 mph SSE 87%
4 AM 26° Partly Cloudy 5% 6 mph SSE 89%
5 AM 24° Partly Cloudy 5% 6 mph S 88%
6 AM 24° Partly Cloudy 3% 5 mph S 87%
7 AM 25° Mostly Clear 3% 5 mph S 86%
8 AM 27° Mostly Clear 10% 5 mph SSW 80%
9 AM 28° Mostly Clear 10% 6 mph SSW 76%
10 AM 29° Mostly Clear 21% 6 mph SW 72%
11 AM 32° Mostly Clear 24% 5 mph SW 70%
15-Day Forecast
Today
7/26
Clear
23%
24°
37°
Mon
7/27
Mostly Clear
25%
24°
37°
Tue
7/28
Clear
49%
24°
38°
Wed
7/29
Mostly Clear
51%
21°
31°
Thu
7/30
Clear
9%
19°
32°
Fri
7/31
Drizzle
60%
21°
30°
Sat
8/1
Clear
60%
19°
31°
Sun
8/2
Drizzle
60%
20°
31°
Mon
8/3
Drizzle
60%
20°
32°
Tue
8/4
Drizzle
60%
22°
34°
Wed
8/5
Drizzle
60%
23°
34°
Thu
8/6
Drizzle
60%
22°
33°
Fri
8/7
Drizzle
60%
22°
32°
Sat
8/8
Drizzle
60%
21°
33°
Sun
8/9
Drizzle
60%
22°
33°
52
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
52 AQI 9.8 µg/m³
O3
Ground-level ozone
31 AQI 34 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Mon 52 Moderate 31 52
Tue 54 Moderate 30 54
Wed 41 Good 41 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
SBCAPE5273 J/kg
MLCAPE3509 J/kg
MUCAPE5273 J/kg
SBCIN0 J/kg
MLCIN0 J/kg
Lifted Index-8.4
Kinematics
0–6 km Shear19 kt
0–1 km Shear9 kt
Eff. Shear24 kt
0–1 km SRH-23
0–3 km SRH-48
Eff. SRH-48
Storm Motion295° @ 18 kt
0–1 km EHI-0.8
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index34.5
Thermo & Levels
PWAT1.94 in
0–3 km LR6.7 °C/km
700–500 LR5.6 °C/km
Total Totals47.2
LCL925 hPa
LFC1000 hPa
EL123 hPa
Freezing Lvl16,975 ft