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

Warren County, Missouri, United States

Last updated: 7:44 AM CDT  ·  Refresh
27°C
Feels like 30°
Mostly Cloudy
▲ 38°  /  ▼ 25°
Wind
4 mph WSW
Humidity
88%
Dew Point
25°
Pressure
29.12 inHg
Visibility
5 mi
UV Index
3.3
Cloud Cover
73%
Sunrise
6:00 AM
Sunset
8:20 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Warren County is currently mostly cloudy at 27°C. Dry conditions are expected through the next 24 hours. Atmospheric instability is elevated (CAPE up to 4140 J/kg) — isolated convective development possible. Sunrise: 6:00AM · Sunset: 8:20PM.

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
52 AQI · Moderate Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
27°
11%
8 AM
28°
29%
9 AM
31°
21%
10 AM
32°
21%
11 AM
33°
36%
12 PM
35°
36%
1 PM
37°
35%
2 PM
37°
29%
3 PM
38°
29%
4 PM
37°
29%
5 PM
37°
29%
6 PM
35°
24%
7 PM
33°
16%
8 PM
33°
17%
9 PM
30°
17%
10 PM
29°
8%
11 PM
29°
8%
12 AM
28°
3%
1 AM
27°
3%
2 AM
27°
3%
3 AM
27°
3%
4 AM
27°
3%
5 AM
26°
3%
6 AM
26°
3%
7-Day Forecast
Today
38° 25°
Partly Cloudy with a 35% chance of rain.
Mon
40° 26°
Mostly Clear with a 30% chance of rain.
Tue
37° 23°
Partly Cloudy with a 51% chance of rain.
Wed
34° 19°
Mostly Cloudy with a 36% chance of rain.
Thu
35° 19°
Rain, 30% chance.
Fri
32° 20°
Rain, 64% chance.
Sat
33° 18°
Clear with a 52% chance of rain.
TimeTempConditionsPrecipWindHumidity
Now 27° Mostly Cloudy 11% 4 mph WSW 88%
8 AM 28° Partly Cloudy 29% 5 mph W 79%
9 AM 31° Mostly Cloudy 21% 6 mph W 71%
10 AM 32° Partly Cloudy 21% 6 mph W 65%
11 AM 33° Mostly Cloudy 36% 6 mph W 60%
12 PM 35° Mostly Cloudy 36% 6 mph W 55%
1 PM 37° Mostly Cloudy 35% 7 mph W 51%
2 PM 37° Partly Cloudy 29% 7 mph W 48%
3 PM 38° Mostly Clear 29% 8 mph WSW 45%
4 PM 37° Partly Cloudy 29% 7 mph WSW 49%
5 PM 37° Partly Cloudy 29% 7 mph WSW 55%
6 PM 35° Partly Cloudy 24% 7 mph WSW 61%
7 PM 33° Partly Cloudy 16% 5 mph WSW 63%
8 PM 33° Mostly Clear 17% 4 mph WSW 63%
9 PM 30° Clear 17% 3 mph SSE 63%
10 PM 29° Mostly Clear 8% 4 mph S 65%
11 PM 29° Mostly Clear 8% 4 mph S 67%
12 AM 28° Partly Cloudy 3% 5 mph SSW 69%
1 AM 27° Mostly Clear 3% 5 mph SSW 70%
2 AM 27° Mostly Clear 3% 5 mph SSW 71%
3 AM 27° Mostly Clear 3% 6 mph SSW 71%
4 AM 27° Mostly Clear 3% 6 mph SSW 72%
5 AM 26° Partly Cloudy 3% 6 mph SW 72%
6 AM 26° Partly Cloudy 3% 6 mph SW 73%
15-Day Forecast
Today
7/26
Partly Cloudy
35%
25°
38°
Mon
7/27
Mostly Clear
30%
26°
40°
Tue
7/28
Partly Cloudy
51%
23°
37°
Wed
7/29
Mostly Cloudy
36%
19°
34°
Thu
7/30
Rain
30%
19°
35°
Fri
7/31
Rain
64%
20°
32°
Sat
8/1
Clear
52%
18°
33°
Sun
8/2
Drizzle
42%
18°
33°
Mon
8/3
Drizzle
44%
19°
35°
Tue
8/4
Drizzle
51%
21°
36°
Wed
8/5
Drizzle
60%
21°
36°
Thu
8/6
Drizzle
60%
21°
36°
Fri
8/7
Drizzle
60%
20°
36°
Sat
8/8
Drizzle
60%
21°
36°
Sun
8/9
Drizzle
60%
21°
37°
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 9.5 µg/m³
O3
Ground-level ozone
37 AQI 40 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Mon 52 Moderate 37 52
Tue 36 Good 32 36
Wed 45 Good 45 31
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
SBCAPE2889 J/kg
MLCAPE2477 J/kg
MUCAPE2889 J/kg
SBCIN-177 J/kg
MLCIN0 J/kg
Lifted Index-5.3
Kinematics
0–6 km Shear11 kt
0–1 km Shear14 kt
Eff. Shear21 kt
0–1 km SRH-9
0–3 km SRH-3
Eff. SRH-3
Storm Motion287° @ 19 kt
0–1 km EHI-0.2
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index28.8
Thermo & Levels
PWAT1.62 in
0–3 km LR5.0 °C/km
700–500 LR5.9 °C/km
Total Totals45.4
LCL958 hPa
LFC727 hPa
EL157 hPa
Freezing Lvl16,562 ft