Excessive Heat Watch 12:00 AM Heat Advisory — Knox, MO, Lewis, MO, Shelby, MO, Marion, MO, Monroe, MO, Ralls, MO, Pike, MO, Boone, MO, Audrain, MO, Moniteau, MO, Cole, MO, Osage, MO, Callaway, MO, Montgomery, MO, Lincoln, MO, Gasconade, MO, Crawford, MO, Washington, MO, St. Francois, MO, Iron, MO, Madison, MO, Reynolds, MO, Warren, MO, St. Charles, MO, Franklin, MO, St. Louis, MO, St. Louis City, MO, Jefferson, MO, Ste. Genevieve, MO 10:00 PM Excessive Heat Warning — 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, Ste. Genevieve, MO, 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, Iron, MO, Madison, MO, Reynolds, MO 8:00 PM

Madison County, Missouri, United States

Last updated: 7:51 PM CDT  ·  Refresh
29°C
Feels like 32°
Mostly Clear
▲ 34°  /  ▼ 21°
Wind
8 mph SSE
Humidity
69%
Dew Point
22°
Pressure
29.06 inHg
Visibility
10 mi
UV Index
1.7
Cloud Cover
17%
Sunrise
5:44 AM
Sunset
8:26 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Madison County is currently mostly clear at 29°C. Dry conditions are expected through the next 24 hours. Atmospheric instability is elevated (CAPE up to 2751 J/kg) — isolated convective development possible. Sunrise: 5:44AM · Sunset: 8:26PM.

Alerts

Excessive Heat Watch
Expires 12:00 AM
Heat Advisory
Knox, MO, Lewis, MO, Shelby, MO, Marion, MO, Monroe, MO, Ralls, MO, Pike, MO, Boone, MO, Audrain, MO, Moniteau, MO, Cole, MO, Osage, MO, Callaway, MO, Montgomery, MO, Lincoln, MO, Gasconade, MO, Crawford, MO, Washington, MO, St. Francois, MO, Iron, MO, Madison, MO, Reynolds, MO, Warren, MO, St. Charles, MO, Franklin, MO, St. Louis, MO, St. Louis City, MO, Jefferson, MO, Ste. Genevieve, MO
Expires 10:00 PM
Excessive Heat Warning
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, Ste. Genevieve, MO, 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, Iron, MO, Madison, MO, Reynolds, MO
Expires 8:00 PM
58 AQI · Moderate Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
29°
11%
8 PM
28°
31%
9 PM
26°
23%
10 PM
25°
16%
11 PM
24°
16%
12 AM
24°
12%
1 AM
23°
7%
2 AM
23°
7%
3 AM
23°
8%
4 AM
23°
8%
5 AM
21°
8%
6 AM
22°
8%
7 AM
23°
8%
8 AM
25°
8%
9 AM
27°
8%
10 AM
29°
8%
11 AM
30°
5%
12 PM
31°
3%
1 PM
33°
3%
2 PM
34°
3%
3 PM
34°
3%
4 PM
33°
3%
5 PM
33°
3%
6 PM
32°
3%
7-Day Forecast
Tonight
34° 21°
Mostly Clear.
Fri
34° 21°
Mostly Clear.
Sat
34° 22°
Partly Cloudy with a 36% chance of rain.
Sun
33° 21°
Mostly Cloudy with a 64% chance of rain.
Mon
33° 20°
Fog with a 60% chance of rain.
Tue
32° 19°
Thunderstorm, 70% chance.
Wed
33° 19°
Thunderstorm, 63% chance.
TimeTempConditionsPrecipWindHumidity
Now 29° Mostly Clear 11% 8 mph SSE 69%
8 PM 28° Mostly Clear 31% 7 mph SSE 74%
9 PM 26° Clear 23% 5 mph SSE 77%
10 PM 25° Clear 16% 5 mph SSE 80%
11 PM 24° Clear 16% 5 mph S 84%
12 AM 24° Mostly Clear 12% 5 mph S 88%
1 AM 23° Mostly Clear 7% 4 mph SSW 89%
2 AM 23° Mostly Clear 7% 4 mph SSW 89%
3 AM 23° Mostly Clear 8% 4 mph SSW 90%
4 AM 23° Mostly Clear 8% 3 mph S 88%
5 AM 21° Clear 8% 3 mph S 88%
6 AM 22° Clear 8% 3 mph S 88%
7 AM 23° Clear 8% 3 mph S 82%
8 AM 25° Mostly Clear 8% 3 mph S 74%
9 AM 27° Mostly Clear 8% 4 mph SSW 67%
10 AM 29° Mostly Clear 8% 5 mph SSW 61%
11 AM 30° Mostly Clear 5% 6 mph S 56%
12 PM 31° Partly Cloudy 3% 6 mph SSW 51%
1 PM 33° Partly Cloudy 3% 6 mph S 50%
2 PM 34° Partly Cloudy 3% 6 mph S 50%
3 PM 34° Partly Cloudy 3% 6 mph S 50%
4 PM 33° Partly Cloudy 3% 6 mph S 52%
5 PM 33° Partly Cloudy 3% 6 mph S 56%
6 PM 32° Partly Cloudy 3% 6 mph SSW 59%
15-Day Forecast
Today
7/2
Mostly Clear
16%
21°
34°
Fri
7/3
Mostly Clear
8%
21°
34°
Sat
7/4
Partly Cloudy
36%
22°
34°
Sun
7/5
Mostly Cloudy
64%
21°
33°
Mon
7/6
Fog
60%
20°
33°
Tue
7/7
Thunderstorm
70%
19°
32°
Wed
7/8
Thunderstorm
63%
19°
33°
Thu
7/9
Rain
63%
20°
33°
Fri
7/10
Rain
69%
21°
34°
Sat
7/11
Thunderstorm
51%
21°
36°
Sun
7/12
Rain
68%
19°
30°
Mon
7/13
Drizzle
60%
19°
32°
Tue
7/14
Drizzle
60%
19°
32°
Wed
7/15
Drizzle
60%
19°
32°
Thu
7/16
Drizzle
60%
20°
33°
58
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
58 AQI 13.0 µg/m³
O3
Ground-level ozone
35 AQI 38 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Today 58 Moderate 35 58
Sat 55 Moderate 34 55
Sun 57 Moderate 30 57
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 Thu Jul 2, 23:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE2018 J/kg
MLCAPE2776 J/kg
MUCAPE3378 J/kg
SBCIN-191 J/kg
MLCIN0 J/kg
Lifted Index-5.6
Kinematics
0–6 km Shear6 kt
0–1 km Shear9 kt
Eff. Shear3 kt
0–1 km SRH-38
0–3 km SRH-29
Eff. SRH-29
Storm Motion155° @ 23 kt
0–1 km EHI-0.5
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index25.9
Thermo & Levels
PWAT1.57 in
0–3 km LR6.1 °C/km
700–500 LR6.6 °C/km
Total Totals48.3
LCL890 hPa
LFC738 hPa
EL163 hPa
Freezing Lvl14,905 ft