Extreme Heat Warning — Clinton, IL, Washington, IL, Randolph, IL, Madison, IL, St. Clair, IL, Monroe, IL, Boone, MO, Moniteau, MO, Cole, MO, Osage, MO, Callaway, MO, Montgomery, MO, Gasconade, MO, Warren, MO, St. Charles, MO, Franklin, MO, St. Louis, MO, St. Louis City, MO, Jefferson, MO 8:00 PM Heat Advisory — Greene, IL, Macoupin, IL, Montgomery, IL, Bond, IL, Fayette, IL, Marion, 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, Audrain, MO, Lincoln, MO, Crawford, MO, Washington, MO, St. Francois, MO, Ste. Genevieve, MO, Iron, MO, Madison, MO, Reynolds, MO 8:00 PM

Madison County, Missouri, United States

Last updated: 5:13 AM CDT  ·  Refresh
24°C
Feels like 26°
Clear
▲ 36°  /  ▼ 23°
Wind
7 mph SSW
Humidity
81%
Dew Point
21°
Pressure
29.04 inHg
Visibility
10 mi
UV Index
0.0
Cloud Cover
5%
Sunrise
6:14 AM
Sunset
7:58 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Madison County is currently clear at 24°C. Dry conditions are expected through the next 24 hours. Atmospheric instability is elevated (CAPE up to 2774 J/kg) — isolated convective development possible. Sunrise: 6:14AM · Sunset: 7:58PM.

Alerts

Extreme Heat Warning
Clinton, IL, Washington, IL, Randolph, IL, Madison, IL, St. Clair, IL, Monroe, IL, Boone, MO, Moniteau, MO, Cole, MO, Osage, MO, Callaway, MO, Montgomery, MO, Gasconade, MO, Warren, MO, St. Charles, MO, Franklin, MO, St. Louis, MO, St. Louis City, MO, Jefferson, MO
Expires 8:00 PM
Heat Advisory
Greene, IL, Macoupin, IL, Montgomery, IL, Bond, IL, Fayette, IL, Marion, 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, Audrain, MO, Lincoln, MO, Crawford, MO, Washington, MO, St. Francois, MO, Ste. Genevieve, MO, Iron, MO, Madison, MO, Reynolds, MO
Expires 8:00 PM
37 AQI · Good Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
24°
7%
6 AM
21°
18%
7 AM
22°
14%
8 AM
23°
14%
9 AM
26°
14%
10 AM
28°
14%
11 AM
29°
14%
12 PM
31°
7%
1 PM
34°
3%
2 PM
34°
3%
3 PM
34°
3%
4 PM
34°
3%
5 PM
34°
3%
6 PM
34°
3%
7 PM
32°
3%
8 PM
31°
5%
9 PM
28°
5%
10 PM
28°
5%
11 PM
27°
5%
12 AM
27°
8%
1 AM
26°
8%
2 AM
26°
14%
3 AM
26°
24%
4 AM
25°
26%
7-Day Forecast
Today
36° 23°
Clear.
Wed
38° 23°
Partly Cloudy with a 32% chance of rain.
Thu
39° 24°
Mostly Clear with a 25% chance of rain.
Fri
36° 23°
Clear.
Sat
39° 23°
Clear.
Sun
40° 23°
Partly Cloudy with a 21% chance of rain.
Mon
36° 21°
Mostly Cloudy with a 33% chance of rain.
TimeTempConditionsPrecipWindHumidity
Now 24° Clear 7% 7 mph SSW 81%
6 AM 21° Clear 18% 7 mph SSW 80%
7 AM 22° Clear 14% 7 mph SW 80%
8 AM 23° Clear 14% 8 mph SW 72%
9 AM 26° Clear 14% 9 mph SW 66%
10 AM 28° Clear 14% 9 mph SW 59%
11 AM 29° Clear 14% 9 mph SW 54%
12 PM 31° Clear 7% 9 mph SW 49%
1 PM 34° Clear 3% 9 mph SW 45%
2 PM 34° Mostly Clear 3% 9 mph SW 44%
3 PM 34° Mostly Clear 3% 8 mph SW 42%
4 PM 34° Partly Cloudy 3% 8 mph SW 41%
5 PM 34° Mostly Clear 3% 6 mph SW 46%
6 PM 34° Mostly Clear 3% 5 mph SW 51%
7 PM 32° Mostly Clear 3% 5 mph SSW 57%
8 PM 31° Mostly Clear 5% 6 mph SSW 61%
9 PM 28° Mostly Clear 5% 6 mph SSW 63%
10 PM 28° Mostly Clear 5% 6 mph SSW 66%
11 PM 27° Mostly Clear 5% 6 mph SSW 67%
12 AM 27° Mostly Clear 8% 6 mph SSW 69%
1 AM 26° Clear 8% 7 mph SSW 70%
2 AM 26° Clear 14% 7 mph SSW 70%
3 AM 26° Clear 24% 7 mph SW 71%
4 AM 25° Clear 26% 6 mph SW 72%
15-Day Forecast
Today
8/11
Clear
14%
23°
36°
Wed
8/12
Partly Cloudy
32%
23°
38°
Thu
8/13
Mostly Clear
25%
24°
39°
Fri
8/14
Clear
15%
23°
36°
Sat
8/15
Clear
7%
23°
39°
Sun
8/16
Partly Cloudy
21%
23°
40°
Mon
8/17
Mostly Cloudy
33%
21°
36°
Tue
8/18
Rain
53%
19°
37°
Wed
8/19
Mostly Clear
35%
22°
39°
Thu
8/20
Clear
35%
23°
37°
Fri
8/21
Clear
25%
21°
36°
Sat
8/22
Drizzle
60%
21°
36°
Sun
8/23
Clear
60%
21°
36°
Mon
8/24
Drizzle
60%
20°
33°
Tue
8/25
Drizzle
60%
19°
33°
37
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
37 AQI 6.6 µg/m³
O3
Ground-level ozone
34 AQI 37 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Today 37 Good 34 37
Wed 31 Good 31 18
Thu 35 Good 35 26
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 Tue Aug 11, 08:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE1012 J/kg
MLCAPE1237 J/kg
MUCAPE1537 J/kg
SBCIN-498 J/kg
MLCIN0 J/kg
Lifted Index-4.8
Kinematics
0–6 km Shear9 kt
0–1 km Shear18 kt
Eff. Shear16 kt
0–1 km SRH112
0–3 km SRH62
Eff. SRH-36
Storm Motion339° @ 11 kt
0–1 km EHI0.7
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index27.8
Thermo & Levels
PWAT1.50 in
0–3 km LR4.0 °C/km
700–500 LR8.0 °C/km
Total Totals52.5
LCL942 hPa
LFC624 hPa
EL210 hPa
Freezing Lvl14,498 ft