Saint Clair County, Michigan, United States

Last updated: 8:26 PM CDT · Refresh

8°C

Feels like 4°

Mostly Clear

▲ 19° / ▼ 4°

Wind

16 mph NNW

Humidity

73%

Dew Point

4°

Pressure

29.39 inHg

Visibility

10 mi

UV Index

0.0

Cloud Cover

27%

Sunrise

7:45 AM

Sunset

6:46 PM

Drag to pan · double-click to forecast a point

WeatherAI™ Analysis

WeatherAI Analysis: Saint Clair County is currently mostly clear at 8°C. Dry conditions are expected through the next 24 hours. Sunrise: 7:45AM · Sunset: 6:46PM.

26 AQI · Good Dominant: O3 Air Quality

Hourly Forecast · Next 24 Hours

Now

8°

15%

10 PM

7°

18%

11 PM

7°

16%

12 AM

7°

10%

1 AM

7°

10%

2 AM

6°

21%

3 AM

6°

20%

4 AM

5°

5 AM

5°

6 AM

4°

7 AM

4°

8 AM

4°

9 AM

6°

10 AM

6°

11 AM

7°

12 PM

8°

1 PM

9°

2 PM

11°

3 PM

11°

4 PM

12°

5 PM

12°

6 PM

10°

7 PM

9°

8 PM

8°

7-Day Forecast

Tonight

19° 4°

Mostly Clear.

Sat

12° 4°

Clear with a 20% chance of rain.

Sun

18° 4°

Clear.

Mon

21° 6°

Clear.

Tue

22° 9°

Mostly Clear.

Wed

21° 8°

Mostly Cloudy.

Thu

23° 8°

Mostly Clear.

+ Feels like

TimeTempConditionsPrecipWindHumidity

Now 8° Mostly Clear 15% 16 mph NNW 73%

10 PM 7° Mostly Clear 18% 16 mph NNW 75%

11 PM 7° Mostly Clear 16% 17 mph NNW 75%

12 AM 7° Partly Cloudy 10% 16 mph NNW 75%

1 AM 7° Partly Cloudy 10% 16 mph NNW 76%

2 AM 6° Mostly Cloudy 21% 16 mph NNW 75%

3 AM 6° Partly Cloudy 20% 15 mph NNW 74%

4 AM 5° Partly Cloudy 3% 14 mph NNW 73%

5 AM 5° Partly Cloudy 3% 13 mph NNW 72%

6 AM 4° Partly Cloudy 3% 12 mph NNW 70%

7 AM 4° Partly Cloudy 3% 11 mph NNW 68%

8 AM 4° Partly Cloudy 3% 11 mph NNW 66%

9 AM 6° Mostly Clear 3% 11 mph NNW 61%

10 AM 6° Mostly Clear 3% 11 mph NNW 56%

11 AM 7° Mostly Clear 3% 10 mph NNW 52%

12 PM 8° Clear 3% 8 mph NNW 48%

1 PM 9° Clear 3% 7 mph NW 44%

2 PM 11° Clear 3% 6 mph NW 41%

3 PM 11° Clear 3% 7 mph WNW 39%

4 PM 12° Clear 3% 7 mph W 37%

5 PM 12° Clear 3% 7 mph W 39%

6 PM 10° Clear 3% 6 mph W 42%

7 PM 9° Clear 3% 6 mph W 46%

8 PM 8° Clear 3% 6 mph WSW 49%

15-Day Forecast

Today

10/16

Mostly Clear

15%

4°

19°

Sat

10/17

Clear

20%

4°

12°

Sun

10/18

Clear

4°

18°

Mon

10/19

Clear

6°

21°

Tue

10/20

Mostly Clear

9°

22°

Wed

10/21

Mostly Cloudy

8°

21°

Thu

10/22

Mostly Clear

8°

23°

Fri

10/23

Partly Cloudy

10°

22°

Sat

10/24

Mostly Clear

8°

21°

Sun

10/25

Overcast

15%

9°

21°

Mon

10/26

Overcast

32%

8°

19°

Tue

10/27

Clear

25%

10°

18°

Wed

10/28

Drizzle

60%

9°

17°

Thu

10/29

Drizzle

60%

9°

18°

Fri

10/30

Drizzle

60%

11°

17°

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

17 AQI 3.1 µg/m³

O₃

Ground-level ozone

Dominant

26 AQI 29 ppb

3-Day Outlook

DayAQICategoryO₃PM2.5

Today 26 Good 26 17

Sun 30 Good 30 4

Mon 28 Good 28 25

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 Fri Oct 16, 23:00'Z' · F0 · 130 (13 km CONUS/NA)

Hodograph · kt

0–1 1–3 3–6 6–9 km

Instability

SBCAPE0 J/kg

MLCAPE9 J/kg

MUCAPE9 J/kg

SBCIN—

MLCIN0 J/kg

Lifted Index10.0

Kinematics

0–6 km Shear29 kt

0–1 km Shear21 kt

Eff. Shear—

0–1 km SRH-49

0–3 km SRH53

Eff. SRH—

Storm Motion328° @ 38 kt

0–1 km EHI-0.0

Composite Parameters

Sig. Tornado0.0

STP (eff)—

Supercell—

K-Index16.6

Thermo & Levels

PWAT0.52 in

0–3 km LR6.2 °C/km

700–500 LR4.8 °C/km

Total Totals42.7

LCL935 hPa

LFC—

EL—

Freezing Lvl4,052 ft

Saint Clair County, Michigan, United States

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