St. Clair County, Missouri, United States

Last updated: 5:01 PM CDT · Refresh

26°C

Feels like 29°

Mostly Cloudy

▲ 27° / ▼ 16°

Wind

4 mph SSE

Humidity

70%

Dew Point

20°

Pressure

29.23 inHg

Visibility

10 mi

UV Index

4.4

Cloud Cover

81%

Sunrise

5:53 AM

Sunset

8:41 PM

Drag to pan · double-click to forecast a point

WeatherAI™ Analysis

WeatherAI Analysis: St. Clair County is currently mostly cloudy at 26°C. Precipitation is likely — peak probability 71% around 10 PM. Atmospheric instability is elevated (CAPE up to 1190 J/kg) — isolated convective development possible. Sunrise: 5:53AM · Sunset: 8:41PM.

34 AQI · Good Dominant: O3 Air Quality

Hourly Forecast · Next 24 Hours

Now

26°

24%

6 PM

26°

30%

7 PM

26°

33%

8 PM

24°

50%

9 PM

24°

70%

10 PM

22°

70%

11 PM

22°

58%

12 AM

22°

38%

1 AM

21°

29%

2 AM

22°

27%

3 AM

21°

37%

4 AM

21°

38%

5 AM

21°

38%

6 AM

19°

27%

7 AM

19°

36%

8 AM

20°

40%

9 AM

21°

41%

10 AM

22°

45%

11 AM

22°

45%

12 PM

22°

45%

1 PM

22°

39%

2 PM

26°

39%

3 PM

26°

39%

4 PM

26°

44%

7-Day Forecast

Today

27° 16°

Rain, 58% chance.

Wed

27° 19°

Mostly Cloudy with a 45% chance of rain.

Thu

28° 19°

Rain, 90% chance.

Fri

29° 19°

Rain, 90% chance.

Sat

32° 21°

Drizzle, 58% chance.

Sun

32° 22°

Clear.

Mon

33° 21°

Clear.

+ Feels like

TimeTempConditionsPrecipWindHumidity

Now 26° Mostly Cloudy 24% 4 mph SSE 70%

6 PM 26° Overcast 30% 4 mph SSE 73%

7 PM 26° Rain 33% 4 mph SE 77%

8 PM 24° Rain 50% 2 mph SE 83%

9 PM 24° Rain 70% 3 mph S 88%

10 PM 22° Heavy Rain 70% 3 mph NW 92%

11 PM 22° Heavy Rain 58% 4 mph ENE 92%

12 AM 22° Rain 38% 4 mph ESE 92%

1 AM 21° Drizzle 29% 5 mph SSE 92%

2 AM 22° Drizzle 27% 3 mph SSE 94%

3 AM 21° Drizzle 37% 3 mph S 95%

4 AM 21° Drizzle 38% 3 mph SSW 96%

5 AM 21° Rain 38% 4 mph SSE 96%

6 AM 19° Drizzle 27% 4 mph S 96%

7 AM 19° Drizzle 36% 5 mph S 96%

8 AM 20° Drizzle 40% 5 mph S 94%

9 AM 21° Drizzle 41% 6 mph S 91%

10 AM 22° Drizzle 45% 6 mph S 88%

11 AM 22° Mostly Cloudy 45% 5 mph SSW 87%

12 PM 22° Mostly Cloudy 45% 5 mph SW 86%

1 PM 22° Overcast 39% 5 mph SW 85%

2 PM 26° Overcast 39% 4 mph SW 86%

3 PM 26° Rain 39% 5 mph SSW 88%

4 PM 26° Rain 44% 6 mph SSE 89%

15-Day Forecast

Today

6/23

Rain

58%

16°

27°

Wed

6/24

Mostly Cloudy

45%

19°

27°

Thu

6/25

Rain

90%

19°

28°

Fri

6/26

Rain

90%

19°

29°

Sat

6/27

Drizzle

58%

21°

32°

Sun

6/28

Clear

22°

32°

Mon

6/29

Clear

14%

21°

33°

Tue

6/30

Clear

20%

22°

33°

Wed

7/1

Clear

38%

21°

34°

Thu

7/2

Drizzle

63%

20°

33°

Fri

7/3

Drizzle

63%

20°

29°

Sat

7/4

Drizzle

66%

20°

33°

Sun

7/5

Drizzle

66%

20°

33°

Mon

7/6

Drizzle

66%

20°

33°

Tue

7/7

Drizzle

66%

20°

33°

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

PM_2.5

Fine particulate matter

14 AQI 2.6 µg/m³

O₃

Ground-level ozone

Dominant

34 AQI 37 ppb

3-Day Outlook

DayAQICategoryO₃PM2.5

Wed 34 Good 34 14

Thu 33 Good 33 26

Fri 35 Good 35 32

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. PM_2.5 (fine particles) is reported in µg/m³ and ozone (O₃) in ppb. Forecast source: NWS NAQFC.

Temp Dewpoint Parcel (SB) CAPE CIN Dry adiabat Moist adiabat Mixing ratio

RAP

Valid Tue Jun 23, 20:00'Z' · F0 · 130 (13 km CONUS/NA)

Hodograph · kt

0–1 1–3 3–6 6–9 km

Instability

SBCAPE1086 J/kg

MLCAPE407 J/kg

MUCAPE1086 J/kg

SBCIN0 J/kg

MLCIN0 J/kg

Lifted Index-3.8

Kinematics

0–6 km Shear28 kt

0–1 km Shear3 kt

Eff. Shear26 kt

0–1 km SRH12

0–3 km SRH-37

Eff. SRH-37

Storm Motion219° @ 19 kt

0–1 km EHI0.1

Composite Parameters

Sig. Tornado0.1

STP (eff)0.0

Supercell0.0

K-Index30.6

Thermo & Levels

PWAT1.57 in

0–3 km LR6.2 °C/km

700–500 LR6.3 °C/km

Total Totals44.9

LCL900 hPa

LFC990 hPa

EL222 hPa

Freezing Lvl13,560 ft

St. Clair County, Missouri, United States

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