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

Warren County, Missouri, United States

Last updated: 7:54 PM CDT  ·  Refresh
29°C
Feels like 34°
Mostly Cloudy
▲ 34°  /  ▼ 22°
Wind
6 mph SSE
Humidity
71%
Dew Point
23°
Pressure
29.16 inHg
Visibility
10 mi
UV Index
1.4
Cloud Cover
70%
Sunrise
5:44 AM
Sunset
8:33 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Warren County is currently mostly cloudy at 30°C. Dry conditions are expected through the next 24 hours. Atmospheric instability is elevated (CAPE up to 3155 J/kg) — isolated convective development possible. Sunrise: 5:44AM · Sunset: 8:33PM.

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
56 AQI · Moderate Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
29°
32%
8 PM
29°
48%
9 PM
27°
33%
10 PM
26°
31%
11 PM
26°
30%
12 AM
25°
11%
1 AM
24°
3%
2 AM
24°
4%
3 AM
23°
4%
4 AM
24°
5%
5 AM
22°
5%
6 AM
23°
8%
7 AM
24°
13%
8 AM
26°
19%
9 AM
29°
22%
10 AM
30°
30%
11 AM
31°
33%
12 PM
32°
21%
1 PM
33°
21%
2 PM
33°
21%
3 PM
33°
19%
4 PM
33°
21%
5 PM
32°
22%
6 PM
32°
22%
7-Day Forecast
Tonight
34° 22°
Mostly Cloudy with a 32% chance of rain.
Fri
35° 22°
Clear with a 30% chance of rain.
Sat
35° 23°
Clear with a 38% chance of rain.
Sun
32° 20°
Mostly Cloudy with a 64% chance of rain.
Mon
33° 20°
Rain, 64% chance.
Tue
32° 18°
Drizzle, 51% chance.
Wed
34° 20°
Drizzle, 52% chance.
TimeTempConditionsPrecipWindHumidity
Now 29° Mostly Cloudy 32% 6 mph SSE 71%
8 PM 29° Partly Cloudy 48% 8 mph S 78%
9 PM 27° Partly Cloudy 33% 9 mph S 83%
10 PM 26° Mostly Cloudy 31% 8 mph S 84%
11 PM 26° Mostly Cloudy 30% 7 mph S 85%
12 AM 25° Partly Cloudy 11% 5 mph SSW 86%
1 AM 24° Mostly Cloudy 3% 4 mph SSW 88%
2 AM 24° Partly Cloudy 4% 5 mph SSW 90%
3 AM 23° Mostly Clear 4% 5 mph SSW 92%
4 AM 24° Mostly Clear 5% 4 mph SSW 89%
5 AM 22° Clear 5% 5 mph SSW 89%
6 AM 23° Clear 8% 5 mph SSW 88%
7 AM 24° Clear 13% 6 mph SSW 81%
8 AM 26° Clear 19% 6 mph SSW 75%
9 AM 29° Clear 22% 7 mph SSW 69%
10 AM 30° Clear 30% 7 mph SSW 64%
11 AM 31° Clear 33% 7 mph SW 59%
12 PM 32° Clear 21% 7 mph SW 54%
1 PM 33° Mostly Clear 21% 6 mph SW 54%
2 PM 33° Mostly Clear 21% 6 mph SW 54%
3 PM 33° Partly Cloudy 19% 7 mph SW 55%
4 PM 33° Mostly Clear 21% 6 mph SW 57%
5 PM 32° Mostly Clear 22% 5 mph SW 59%
6 PM 32° Clear 22% 4 mph SW 61%
15-Day Forecast
Today
7/2
Mostly Cloudy
32%
22°
34°
Fri
7/3
Clear
30%
22°
35°
Sat
7/4
Clear
38%
23°
35°
Sun
7/5
Mostly Cloudy
64%
20°
32°
Mon
7/6
Rain
64%
20°
33°
Tue
7/7
Drizzle
51%
18°
32°
Wed
7/8
Drizzle
52%
20°
34°
Thu
7/9
Clear
28%
21°
34°
Fri
7/10
Rain
68%
21°
32°
Sat
7/11
Thunderstorm
68%
21°
36°
Sun
7/12
Rain
68%
19°
31°
Mon
7/13
Clear
60%
19°
31°
Tue
7/14
Drizzle
60%
19°
31°
Wed
7/15
Drizzle
60%
19°
32°
Thu
7/16
Drizzle
60%
20°
33°
56
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
56 AQI 11.7 µg/m³
O3
Ground-level ozone
26 AQI 28 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Today 56 Moderate 26 56
Sat 56 Moderate 26 56
Sun 58 Moderate 27 58
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
SBCAPE3077 J/kg
MLCAPE2562 J/kg
MUCAPE3077 J/kg
SBCIN-111 J/kg
MLCIN0 J/kg
Lifted Index-6.8
Kinematics
0–6 km Shear17 kt
0–1 km Shear11 kt
Eff. Shear19 kt
0–1 km SRH-6
0–3 km SRH-36
Eff. SRH-36
Storm Motion190° @ 27 kt
0–1 km EHI-0.1
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index31.4
Thermo & Levels
PWAT1.86 in
0–3 km LR6.2 °C/km
700–500 LR6.4 °C/km
Total Totals50.5
LCL904 hPa
LFC829 hPa
EL145 hPa
Freezing Lvl15,315 ft