Heat Advisory — Bourbon, KS, Crawford, KS, Cherokee, KS, Benton, MO, Morgan, MO, Miller, MO, Maries, MO, Vernon, MO, St. Clair, MO, Hickory, MO, Camden, MO, Pulaski, MO, Phelps, MO, Barton, MO, Cedar, MO, Polk, MO, Dallas, MO, Laclede, MO, Texas, MO, Dent, 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: 6:07 AM CDT  ·  Refresh
22°C
Feels like 25°
Mostly Cloudy
▲ 36°  /  ▼ 22°
Wind
6 mph ENE
Humidity
94%
Dew Point
21°
Pressure
29.27 inHg
Visibility
9 mi
UV Index
0.0
Cloud Cover
79%
Sunrise
6:57 AM
Sunset
7:21 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: St. Clair County is currently mostly cloudy at 22°C. Dry conditions are expected through the next 24 hours. Atmospheric instability is elevated (CAPE up to 1691 J/kg) — isolated convective development possible. Sunrise: 6:57AM · Sunset: 7:21PM.

Alerts

Heat Advisory
Bourbon, KS, Crawford, KS, Cherokee, KS, Benton, MO, Morgan, MO, Miller, MO, Maries, MO, Vernon, MO, St. Clair, MO, Hickory, MO, Camden, MO, Pulaski, MO, Phelps, MO, Barton, MO, Cedar, MO, Polk, MO, Dallas, MO, Laclede, MO, Texas, MO, Dent, 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
36 AQI · Good Dominant: O3 Air Quality
Hourly Forecast · Next 24 Hours
Now
22°
17%
7 AM
21°
31%
8 AM
22°
31%
9 AM
24°
31%
10 AM
26°
24%
11 AM
28°
15%
12 PM
30°
15%
1 PM
32°
14%
2 PM
36°
14%
3 PM
36°
7%
4 PM
36°
17%
5 PM
35°
17%
6 PM
34°
18%
7 PM
33°
13%
8 PM
32°
13%
9 PM
31°
13%
10 PM
29°
3%
11 PM
28°
3%
12 AM
27°
3%
1 AM
26°
3%
2 AM
26°
3%
3 AM
26°
3%
4 AM
25°
3%
5 AM
24°
3%
7-Day Forecast
Today
36° 22°
Clear with a 31% chance of rain.
Thu
38° 23°
Mostly Clear.
Fri
37° 22°
Partly Cloudy.
Sat
37° 23°
Clear with a 42% chance of rain.
Sun
32° 19°
Drizzle, 57% chance.
Mon
29° 17°
Rain, 63% chance.
Tue
31° 16°
Rain, 45% chance.
TimeTempConditionsPrecipWindHumidity
Now 22° Mostly Cloudy 17% 6 mph ENE 94%
7 AM 21° Partly Cloudy 31% 6 mph E 95%
8 AM 22° Mostly Clear 31% 6 mph E 90%
9 AM 24° Mostly Clear 31% 5 mph ESE 84%
10 AM 26° Clear 24% 5 mph SE 77%
11 AM 28° Clear 15% 6 mph S 66%
12 PM 30° Clear 15% 6 mph SSW 57%
1 PM 32° Mostly Clear 14% 6 mph SW 48%
2 PM 36° Mostly Clear 14% 6 mph SW 46%
3 PM 36° Mostly Clear 7% 7 mph WSW 44%
4 PM 36° Mostly Clear 17% 7 mph WSW 43%
5 PM 35° Clear 17% 6 mph SW 48%
6 PM 34° Clear 18% 5 mph SSW 53%
7 PM 33° Clear 13% 4 mph SSE 59%
8 PM 32° Clear 13% 5 mph SSE 59%
9 PM 31° Clear 13% 5 mph SSE 61%
10 PM 29° Clear 3% 5 mph SSE 62%
11 PM 28° Clear 3% 5 mph S 67%
12 AM 27° Mostly Clear 3% 5 mph S 72%
1 AM 26° Mostly Clear 3% 5 mph S 75%
2 AM 26° Mostly Clear 3% 5 mph S 76%
3 AM 26° Mostly Clear 3% 5 mph S 77%
4 AM 25° Mostly Clear 3% 6 mph SSW 77%
5 AM 24° Mostly Clear 3% 6 mph S 78%
15-Day Forecast
Today
9/16
Clear
31%
22°
36°
Thu
9/17
Mostly Clear
6%
23°
38°
Fri
9/18
Partly Cloudy
3%
22°
37°
Sat
9/19
Clear
42%
23°
37°
Sun
9/20
Drizzle
57%
19°
32°
Mon
9/21
Rain
63%
17°
29°
Tue
9/22
Rain
45%
16°
31°
Wed
9/23
Rain
73%
17°
31°
Thu
9/24
Mostly Cloudy
34%
16°
29°
Fri
9/25
Partly Cloudy
39%
16°
33°
Sat
9/26
Clear
25%
15°
31°
Sun
9/27
Drizzle
60%
16°
29°
Mon
9/28
Drizzle
60%
16°
30°
Tue
9/29
Drizzle
60%
16°
30°
Wed
9/30
Drizzle
60%
16°
29°
36
Good
U.S. Air Quality Index · Dominant: O3
50 100 150 200

Air quality is satisfactory and poses little or no health risk.

Pollutant Breakdown · Today
PM2.5
Fine particulate matter
27 AQI 4.9 µg/m³
O3
Ground-level ozone
Dominant
36 AQI 40 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Today 36 Good 36 27
Thu 35 Good 35 23
Fri 51 Moderate 43 51
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 Wed Sep 16, 09:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE3 J/kg
MLCAPE179 J/kg
MUCAPE440 J/kg
SBCIN-347 J/kg
MLCIN-231 J/kg
Lifted Index-0.1
Kinematics
0–6 km Shear27 kt
0–1 km Shear31 kt
Eff. Shear23 kt
0–1 km SRH178
0–3 km SRH166
Eff. SRH139
Storm Motion261° @ 24 kt
0–1 km EHI0.0
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.7
K-Index33.9
Thermo & Levels
PWAT1.66 in
0–3 km LR4.5 °C/km
700–500 LR5.4 °C/km
Total Totals45.9
LCL974 hPa
LFC520 hPa
EL441 hPa
Freezing Lvl15,410 ft