Heat Advisory — Bourbon, KS, Crawford, KS, Cherokee, KS, Vernon, MO, St. Clair, MO, Hickory, MO, Barton, MO, Cedar, MO, Polk, MO, Dallas, MO, Laclede, MO, Texas, MO, Jasper, MO, Dade, MO, Greene, MO, Webster, MO, Wright, MO, Newton, MO, Lawrence, MO, Christian, MO, Douglas, MO, Howell, MO, Shannon, MO, McDonald, MO, Barry, MO, Stone, MO, Taney, MO, Ozark, MO, Oregon, MO 8:00 PM

St. Clair County, Missouri, United States

Last updated: 4:55 PM CDT  ·  Refresh
26°C
Feels like 28°
Mostly Cloudy
▲ 29°  /  ▼ 19°
Wind
6 mph NE
Humidity
70%
Dew Point
21°
Pressure
29.16 inHg
Visibility
10 mi
UV Index
4.7
Cloud Cover
66%
Sunrise
6:55 AM
Sunset
7:26 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: St. Clair County is currently mostly cloudy at 26°C. Dry conditions are expected through the next 24 hours. Atmospheric instability is elevated (CAPE up to 1731 J/kg) — isolated convective development possible. Sunrise: 6:55AM · Sunset: 7:26PM.

Alerts

Heat Advisory
Bourbon, KS, Crawford, KS, Cherokee, KS, Vernon, MO, St. Clair, MO, Hickory, MO, Barton, MO, Cedar, MO, Polk, MO, Dallas, MO, Laclede, MO, Texas, MO, Jasper, MO, Dade, MO, Greene, MO, Webster, MO, Wright, MO, Newton, MO, Lawrence, MO, Christian, MO, Douglas, MO, Howell, MO, Shannon, MO, McDonald, MO, Barry, MO, Stone, MO, Taney, MO, Ozark, MO, Oregon, MO
Expires 8:00 PM
34 AQI · Good Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
26°
4%
5 PM
27°
3%
6 PM
26°
3%
7 PM
25°
9%
8 PM
24°
12%
9 PM
23°
12%
10 PM
22°
12%
11 PM
22°
20%
12 AM
21°
20%
1 AM
21°
21%
2 AM
21°
21%
3 AM
21°
22%
4 AM
21°
22%
5 AM
19°
23%
6 AM
19°
14%
7 AM
21°
14%
8 AM
22°
15%
9 AM
21°
15%
10 AM
23°
15%
11 AM
27°
9%
12 PM
28°
5%
1 PM
31°
5%
2 PM
31°
5%
3 PM
32°
5%
7-Day Forecast
Today
29° 19°
Mostly Cloudy.
Mon
36° 19°
Mostly Clear with a 22% chance of rain.
Tue
37° 23°
Mostly Clear with a 55% chance of rain.
Wed
36° 21°
Clear with a 22% chance of rain.
Thu
35° 22°
Clear.
Fri
35° 22°
Drizzle, 52% chance.
Sat
33° 19°
Drizzle, 53% chance.
TimeTempConditionsPrecipWindHumidity
Now 26° Mostly Cloudy 4% 6 mph NE 70%
5 PM 27° Partly Cloudy 3% 6 mph NE 72%
6 PM 26° Partly Cloudy 3% 6 mph NE 76%
7 PM 25° Partly Cloudy 9% 7 mph ENE 77%
8 PM 24° Partly Cloudy 12% 7 mph ENE 76%
9 PM 23° Partly Cloudy 12% 7 mph ENE 75%
10 PM 22° Partly Cloudy 12% 7 mph ENE 74%
11 PM 22° Partly Cloudy 20% 8 mph ENE 74%
12 AM 21° Partly Cloudy 20% 8 mph E 74%
1 AM 21° Partly Cloudy 21% 8 mph E 72%
2 AM 21° Partly Cloudy 21% 8 mph E 71%
3 AM 21° Partly Cloudy 22% 8 mph E 69%
4 AM 21° Partly Cloudy 22% 8 mph E 69%
5 AM 19° Partly Cloudy 23% 8 mph ESE 70%
6 AM 19° Partly Cloudy 14% 8 mph ESE 71%
7 AM 21° Mostly Clear 14% 8 mph ESE 71%
8 AM 22° Mostly Clear 15% 10 mph SE 70%
9 AM 21° Clear 15% 10 mph SE 69%
10 AM 23° Clear 15% 10 mph SE 67%
11 AM 27° Clear 9% 10 mph SE 64%
12 PM 28° Clear 5% 11 mph SSE 61%
1 PM 31° Clear 5% 11 mph SSE 58%
2 PM 31° Clear 5% 11 mph SSE 56%
3 PM 32° Clear 5% 11 mph SSE 54%
15-Day Forecast
Today
9/13
Mostly Cloudy
12%
19°
29°
Mon
9/14
Mostly Clear
22%
19°
36°
Tue
9/15
Mostly Clear
55%
23°
37°
Wed
9/16
Clear
22%
21°
36°
Thu
9/17
Clear
17%
22°
35°
Fri
9/18
Drizzle
52%
22°
35°
Sat
9/19
Drizzle
53%
19°
33°
Sun
9/20
Mostly Clear
53%
17°
29°
Mon
9/21
Drizzle
60%
16°
28°
Tue
9/22
Drizzle
68%
14°
27°
Wed
9/23
Drizzle
64%
13°
27°
Thu
9/24
Drizzle
60%
16°
29°
Fri
9/25
Drizzle
60%
16°
29°
Sat
9/26
Drizzle
60%
16°
29°
Sun
9/27
Drizzle
60%
16°
29°
34
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
34 AQI 6.2 µg/m³
O3
Ground-level ozone
27 AQI 30 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Mon 34 Good 27 34
Tue 38 Good 38 37
Wed 36 Good 34 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 Sun Sep 13, 20:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE662 J/kg
MLCAPE60 J/kg
MUCAPE662 J/kg
SBCIN-166 J/kg
MLCIN-322 J/kg
Lifted Index-2.3
Kinematics
0–6 km Shear20 kt
0–1 km Shear11 kt
Eff. Shear20 kt
0–1 km SRH63
0–3 km SRH245
Eff. SRH245
Storm Motion354° @ 18 kt
0–1 km EHI0.3
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell1.7
K-Index34.0
Thermo & Levels
PWAT1.69 in
0–3 km LR5.4 °C/km
700–500 LR6.0 °C/km
Total Totals45.8
LCL915 hPa
LFC653 hPa
EL222 hPa
Freezing Lvl15,007 ft