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

Franklin County, Missouri, United States

Last updated: 6:57 PM CDT  ·  Refresh
31°C
Feels like 37°
Partly Cloudy
▲ 34°  /  ▼ 22°
Wind
6 mph S
Humidity
66%
Dew Point
23°
Pressure
29.26 inHg
Visibility
10 mi
UV Index
3.6
Cloud Cover
49%
Sunrise
5:44 AM
Sunset
8:31 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Franklin County is currently partly cloudy at 31°C. Dry conditions are expected through the next 24 hours. Atmospheric instability is elevated (CAPE up to 2907 J/kg) — isolated convective development possible. Sunrise: 5:44AM · Sunset: 8:31PM.

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
31°
32%
7 PM
30°
48%
8 PM
28°
47%
9 PM
26°
32%
10 PM
26°
32%
11 PM
26°
31%
12 AM
25°
14%
1 AM
24°
4%
2 AM
24°
4%
3 AM
23°
8%
4 AM
24°
8%
5 AM
22°
8%
6 AM
23°
8%
7 AM
24°
14%
8 AM
26°
14%
9 AM
29°
14%
10 AM
31°
23%
11 AM
32°
28%
12 PM
33°
25%
1 PM
34°
25%
2 PM
33°
32%
3 PM
32°
32%
4 PM
32°
22%
5 PM
32°
18%
7-Day Forecast
Tonight
34° 22°
Partly Cloudy with a 32% chance of rain.
Fri
36° 22°
Clear with a 25% chance of rain.
Sat
36° 23°
Partly Cloudy with a 31% chance of rain.
Sun
33° 21°
Partly Cloudy with a 31% chance of rain.
Mon
33° 20°
Mostly Cloudy with a 54% chance of rain.
Tue
33° 19°
Drizzle, 51% chance.
Wed
34° 20°
Rain, 63% chance.
TimeTempConditionsPrecipWindHumidity
Now 31° Partly Cloudy 32% 6 mph S 66%
7 PM 30° Partly Cloudy 48% 6 mph SSE 74%
8 PM 28° Partly Cloudy 47% 6 mph SSE 80%
9 PM 26° Partly Cloudy 32% 6 mph SSE 85%
10 PM 26° Partly Cloudy 32% 5 mph S 86%
11 PM 26° Mostly Cloudy 31% 5 mph SSW 87%
12 AM 25° Mostly Cloudy 14% 5 mph SSW 87%
1 AM 24° Mostly Cloudy 4% 5 mph SSW 89%
2 AM 24° Mostly Cloudy 4% 5 mph SSW 91%
3 AM 23° Partly Cloudy 8% 4 mph SSW 92%
4 AM 24° Mostly Clear 8% 4 mph SSW 89%
5 AM 22° Mostly Clear 8% 4 mph SSW 89%
6 AM 23° Clear 8% 4 mph SSW 89%
7 AM 24° Clear 14% 5 mph SSW 82%
8 AM 26° Clear 14% 6 mph SSW 74%
9 AM 29° Clear 14% 6 mph SSW 67%
10 AM 31° Clear 23% 7 mph SSW 61%
11 AM 32° Clear 28% 7 mph SSW 56%
12 PM 33° Mostly Clear 25% 7 mph SW 51%
1 PM 34° Mostly Clear 25% 7 mph SSW 52%
2 PM 33° Partly Cloudy 32% 7 mph SSW 53%
3 PM 32° Partly Cloudy 32% 7 mph SSW 54%
4 PM 32° Partly Cloudy 22% 6 mph SSW 57%
5 PM 32° Mostly Clear 18% 5 mph SSW 60%
15-Day Forecast
Today
7/2
Partly Cloudy
32%
22°
34°
Fri
7/3
Clear
25%
22°
36°
Sat
7/4
Partly Cloudy
31%
23°
36°
Sun
7/5
Partly Cloudy
31%
21°
33°
Mon
7/6
Mostly Cloudy
54%
20°
33°
Tue
7/7
Drizzle
51%
19°
33°
Wed
7/8
Rain
63%
20°
34°
Thu
7/9
Partly Cloudy
41%
22°
34°
Fri
7/10
Thunderstorm
63%
21°
33°
Sat
7/11
Mostly Cloudy
44%
21°
34°
Sun
7/12
Rain
68%
19°
32°
Mon
7/13
Drizzle
60%
19°
32°
Tue
7/14
Drizzle
60%
19°
32°
Wed
7/15
Drizzle
60%
19°
33°
Thu
7/16
Drizzle
60%
20°
34°
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 12.0 µg/m³
O3
Ground-level ozone
27 AQI 30 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Fri 56 Moderate 27 56
Sat 55 Moderate 25 55
Sun 57 Moderate 28 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, 22:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE3188 J/kg
MLCAPE2606 J/kg
MUCAPE3188 J/kg
SBCIN-96 J/kg
MLCIN0 J/kg
Lifted Index-6.5
Kinematics
0–6 km Shear11 kt
0–1 km Shear10 kt
Eff. Shear14 kt
0–1 km SRH-6
0–3 km SRH-33
Eff. SRH-33
Storm Motion188° @ 26 kt
0–1 km EHI-0.1
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index33.5
Thermo & Levels
PWAT1.88 in
0–3 km LR6.6 °C/km
700–500 LR6.2 °C/km
Total Totals49.5
LCL888 hPa
LFC832 hPa
EL145 hPa
Freezing Lvl15,105 ft