Excessive Heat Warning — Greene, IL, Macoupin, IL, Montgomery, IL, Bond, IL, Fayette, IL, Clinton, IL, Marion, IL, Washington, IL, Randolph, IL, Adams, IL, Brown, IL, Pike, IL, Calhoun, IL, Jersey, IL, Knox, MO, Lewis, MO, Shelby, MO, Marion, MO, Monroe, MO, Ralls, MO, Pike, MO, Montgomery, MO, Lincoln, MO, Gasconade, MO, Warren, MO, Franklin, MO, Crawford, MO, Washington, MO, St. Francois, MO, Ste. Genevieve, MO, Iron, MO, Madison, MO, Reynolds, MO 9:00 PM Excessive Heat Watch 7:00 PM

Madison County, Missouri, United States

Last updated: 7:43 AM CDT  ·  Refresh
26°C
Feels like 30°
Mostly Clear
▲ 37°  /  ▼ 23°
Wind
3 mph WSW
Humidity
92%
Dew Point
24°
Pressure
28.99 inHg
Visibility
6 mi
UV Index
4.6
Cloud Cover
28%
Sunrise
6:00 AM
Sunset
8:14 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Madison County is currently mostly clear at 25°C. Dry conditions are expected through the next 24 hours. Atmospheric instability is elevated (CAPE up to 3794 J/kg) — isolated convective development possible. Sunrise: 6:00AM · Sunset: 8:14PM.

Alerts

Excessive Heat Warning
Greene, IL, Macoupin, IL, Montgomery, IL, Bond, IL, Fayette, IL, Clinton, IL, Marion, IL, Washington, IL, Randolph, IL, Adams, IL, Brown, IL, Pike, IL, Calhoun, IL, Jersey, IL, Knox, MO, Lewis, MO, Shelby, MO, Marion, MO, Monroe, MO, Ralls, MO, Pike, MO, Montgomery, MO, Lincoln, MO, Gasconade, MO, Warren, MO, Franklin, MO, Crawford, MO, Washington, MO, St. Francois, MO, Ste. Genevieve, MO, Iron, MO, Madison, MO, Reynolds, MO
Expires 9:00 PM
Excessive Heat Watch
Expires 7:00 PM
44 AQI · Good Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
26°
45%
8 AM
27°
33%
9 AM
29°
25%
10 AM
31°
31%
11 AM
32°
36%
12 PM
33°
29%
1 PM
34°
29%
2 PM
34°
29%
3 PM
34°
29%
4 PM
33°
37%
5 PM
34°
37%
6 PM
32°
38%
7 PM
31°
38%
8 PM
29°
25%
9 PM
27°
26%
10 PM
27°
8%
11 PM
26°
8%
12 AM
26°
3%
1 AM
24°
3%
2 AM
24°
3%
3 AM
24°
9%
4 AM
24°
9%
5 AM
24°
9%
6 AM
24°
9%
7-Day Forecast
Today
37° 23°
Mostly Cloudy with a 45% chance of rain.
Mon
38° 23°
Mostly Clear.
Tue
38° 23°
Mostly Clear with a 42% chance of rain.
Wed
32° 19°
Mostly Cloudy with a 28% chance of rain.
Thu
32° 19°
Rain, 29% chance.
Fri
29° 18°
Rain, 64% chance.
Sat
31° 17°
Drizzle, 53% chance.
TimeTempConditionsPrecipWindHumidity
Now 26° Mostly Clear 45% 3 mph WSW 92%
8 AM 27° Partly Cloudy 33% 3 mph W 82%
9 AM 29° Partly Cloudy 25% 4 mph W 74%
10 AM 31° Partly Cloudy 31% 4 mph W 68%
11 AM 32° Partly Cloudy 36% 4 mph W 62%
12 PM 33° Partly Cloudy 29% 5 mph W 57%
1 PM 34° Partly Cloudy 29% 5 mph W 55%
2 PM 34° Mostly Cloudy 29% 6 mph WSW 54%
3 PM 34° Mostly Cloudy 29% 8 mph SW 52%
4 PM 33° Mostly Cloudy 37% 6 mph WSW 55%
5 PM 34° Mostly Cloudy 37% 6 mph W 58%
6 PM 32° Overcast 38% 7 mph NNW 63%
7 PM 31° Overcast 38% 6 mph NNW 68%
8 PM 29° Mostly Cloudy 25% 5 mph SW 73%
9 PM 27° Mostly Cloudy 26% 4 mph SSE 78%
10 PM 27° Partly Cloudy 8% 5 mph SSE 78%
11 PM 26° Partly Cloudy 8% 5 mph S 78%
12 AM 26° Partly Cloudy 3% 5 mph SSW 77%
1 AM 24° Mostly Clear 3% 5 mph SSW 78%
2 AM 24° Mostly Clear 3% 5 mph SSW 78%
3 AM 24° Clear 9% 5 mph SSW 79%
4 AM 24° Clear 9% 5 mph SSW 80%
5 AM 24° Mostly Clear 9% 4 mph SSW 81%
6 AM 24° Mostly Clear 9% 4 mph SSW 82%
15-Day Forecast
Today
7/26
Mostly Cloudy
45%
23°
37°
Mon
7/27
Mostly Clear
10%
23°
38°
Tue
7/28
Mostly Clear
42%
23°
38°
Wed
7/29
Mostly Cloudy
28%
19°
32°
Thu
7/30
Rain
29%
19°
32°
Fri
7/31
Rain
64%
18°
29°
Sat
8/1
Drizzle
53%
17°
31°
Sun
8/2
Drizzle
43%
19°
31°
Mon
8/3
Drizzle
44%
19°
32°
Tue
8/4
Drizzle
51%
20°
33°
Wed
8/5
Drizzle
60%
22°
33°
Thu
8/6
Drizzle
60%
21°
33°
Fri
8/7
Drizzle
60%
20°
32°
Sat
8/8
Drizzle
60%
20°
33°
Sun
8/9
Drizzle
60%
21°
33°
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
34 AQI 37 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Mon 44 Good 34 44
Tue 41 Good 31 41
Wed 49 Good 49 29
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, 11:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE1805 J/kg
MLCAPE1620 J/kg
MUCAPE1942 J/kg
SBCIN-231 J/kg
MLCIN0 J/kg
Lifted Index-3.1
Kinematics
0–6 km Shear12 kt
0–1 km Shear15 kt
Eff. Shear14 kt
0–1 km SRH1
0–3 km SRH-32
Eff. SRH-32
Storm Motion312° @ 20 kt
0–1 km EHI0.0
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index24.1
Thermo & Levels
PWAT1.43 in
0–3 km LR4.9 °C/km
700–500 LR5.4 °C/km
Total Totals43.6
LCL960 hPa
LFC719 hPa
EL178 hPa
Freezing Lvl16,726 ft