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

Montgomery County, Missouri, United States

Last updated: 6:07 AM CDT  ·  Refresh
24°C
Feels like 26°
Mostly Clear
▲ 34°  /  ▼ 24°
Wind
8 mph SSW
Humidity
76%
Dew Point
21°
Pressure
29.12 inHg
Visibility
10 mi
UV Index
0.0
Cloud Cover
12%
Sunrise
6:15 AM
Sunset
8:05 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Montgomery County is currently mostly clear at 24°C. Dry conditions are expected through the next 24 hours. Atmospheric instability is elevated (CAPE up to 3707 J/kg) — isolated convective development possible. Sunrise: 6:15AM · Sunset: 8:05PM.

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
38 AQI · Good Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
24°
3%
7 AM
23°
19%
8 AM
25°
20%
9 AM
26°
20%
10 AM
27°
20%
11 AM
28°
20%
12 PM
30°
20%
1 PM
32°
3%
2 PM
33°
4%
3 PM
33°
4%
4 PM
34°
7%
5 PM
34°
8%
6 PM
33°
8%
7 PM
32°
13%
8 PM
31°
21%
9 PM
28°
21%
10 PM
28°
29%
11 PM
27°
29%
12 AM
27°
30%
1 AM
26°
30%
2 AM
26°
31%
3 AM
26°
31%
4 AM
26°
32%
5 AM
24°
35%
7-Day Forecast
Today
34° 24°
Partly Cloudy with a 21% chance of rain.
Wed
36° 24°
Partly Cloudy with a 42% chance of rain.
Thu
34° 23°
Partly Cloudy with a 38% chance of rain.
Fri
34° 21°
Mostly Clear with a 51% chance of rain.
Sat
38° 23°
Mostly Clear.
Sun
36° 21°
Rain, 46% chance.
Mon
33° 19°
Mostly Clear with a 49% chance of rain.
TimeTempConditionsPrecipWindHumidity
Now 24° Mostly Clear 3% 8 mph SSW 76%
7 AM 23° Mostly Clear 19% 9 mph SW 73%
8 AM 25° Partly Cloudy 20% 10 mph SW 69%
9 AM 26° Partly Cloudy 20% 12 mph SW 64%
10 AM 27° Mostly Cloudy 20% 13 mph SW 60%
11 AM 28° Partly Cloudy 20% 13 mph SW 56%
12 PM 30° Partly Cloudy 20% 13 mph SW 53%
1 PM 32° Partly Cloudy 3% 13 mph SW 49%
2 PM 33° Partly Cloudy 4% 12 mph SW 48%
3 PM 33° Mostly Clear 4% 12 mph SW 47%
4 PM 34° Partly Cloudy 7% 11 mph SW 46%
5 PM 34° Partly Cloudy 8% 9 mph SW 50%
6 PM 33° Mostly Cloudy 8% 7 mph SW 56%
7 PM 32° Mostly Cloudy 13% 6 mph SW 61%
8 PM 31° Partly Cloudy 21% 6 mph SSW 63%
9 PM 28° Partly Cloudy 21% 6 mph SSW 66%
10 PM 28° Partly Cloudy 29% 7 mph SSW 67%
11 PM 27° Partly Cloudy 29% 7 mph SSW 69%
12 AM 27° Partly Cloudy 30% 8 mph SSW 70%
1 AM 26° Partly Cloudy 30% 8 mph SSW 71%
2 AM 26° Partly Cloudy 31% 8 mph SSW 71%
3 AM 26° Partly Cloudy 31% 8 mph SSW 72%
4 AM 26° Partly Cloudy 32% 8 mph SSW 72%
5 AM 24° Mostly Clear 35% 8 mph SSW 72%
15-Day Forecast
Today
8/11
Partly Cloudy
21%
24°
34°
Wed
8/12
Partly Cloudy
42%
24°
36°
Thu
8/13
Partly Cloudy
38%
23°
34°
Fri
8/14
Mostly Clear
51%
21°
34°
Sat
8/15
Mostly Clear
15%
23°
38°
Sun
8/16
Rain
46%
21°
36°
Mon
8/17
Mostly Clear
49%
19°
33°
Tue
8/18
Rain
53%
19°
38°
Wed
8/19
Partly Cloudy
35%
22°
38°
Thu
8/20
Partly Cloudy
35%
23°
39°
Fri
8/21
Drizzle
60%
21°
39°
Sat
8/22
Drizzle
60%
20°
35°
Sun
8/23
Clear
60%
21°
35°
Mon
8/24
Drizzle
60%
19°
33°
Tue
8/25
Drizzle
60%
19°
32°
38
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
38 AQI 6.8 µg/m³
O3
Ground-level ozone
36 AQI 39 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Today 38 Good 36 38
Wed 35 Good 35 22
Thu 36 Good 33 36
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, 09:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 50 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE1138 J/kg
MLCAPE1411 J/kg
MUCAPE1606 J/kg
SBCIN-599 J/kg
MLCIN0 J/kg
Lifted Index-4.9
Kinematics
0–6 km Shear17 kt
0–1 km Shear21 kt
Eff. Shear—
0–1 km SRH168
0–3 km SRH145
Eff. SRH—
Storm Motion308° @ 18 kt
0–1 km EHI1.2
Composite Parameters
Sig. Tornado0.0
STP (eff)—
Supercell—
K-Index25.7
Thermo & Levels
PWAT1.45 in
0–3 km LR3.9 °C/km
700–500 LR8.2 °C/km
Total Totals53.5
LCL939 hPa
LFC642 hPa
EL209 hPa
Freezing Lvl14,370 ft