Saint Clair County, Michigan, United States

Last updated: 7:30 PM CDT  ·  Refresh
22°C
Feels like 21°
Clear
▲ 26°  /  ▼ 16°
Wind
8 mph NNW
Humidity
62%
Dew Point
13°
Pressure
29.21 inHg
Visibility
10 mi
UV Index
1.0
Cloud Cover
1%
Sunrise
6:18 AM
Sunset
8:54 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Saint Clair County is currently clear at 22°C. Dry conditions are expected through the next 24 hours. Sunrise: 6:18AM · Sunset: 8:54PM.

Alerts

No active alerts for this location.
34 AQI · Good Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
22°
11%
9 PM
22°
27%
10 PM
20°
20%
11 PM
19°
20%
12 AM
18°
14%
1 AM
18°
14%
2 AM
17°
3%
3 AM
17°
3%
4 AM
17°
3%
5 AM
17°
3%
6 AM
16°
3%
7 AM
17°
3%
8 AM
18°
3%
9 AM
21°
3%
10 AM
23°
3%
11 AM
24°
3%
12 PM
25°
4%
1 PM
26°
4%
2 PM
27°
4%
3 PM
27°
4%
4 PM
27°
4%
5 PM
27°
4%
6 PM
27°
4%
7 PM
27°
4%
7-Day Forecast
Tonight
26° 16°
Clear with a 20% chance of rain.
Thu
27° 16°
Clear.
Fri
31° 18°
Mostly Cloudy with a 36% chance of rain.
Sat
26° 18°
Overcast with a 77% chance of rain.
Sun
26° 16°
Fog with a 45% chance of rain.
Mon
28° 15°
Clear with a 38% chance of rain.
Tue
31° 17°
Partly Cloudy.
TimeTempConditionsPrecipWindHumidity
Now 22° Clear 11% 8 mph NNW 62%
9 PM 22° Clear 27% 5 mph NNW 63%
10 PM 20° Clear 20% 5 mph NW 67%
11 PM 19° Clear 20% 5 mph NW 70%
12 AM 18° Clear 14% 6 mph NW 73%
1 AM 18° Clear 14% 5 mph NW 76%
2 AM 17° Clear 3% 6 mph NW 79%
3 AM 17° Clear 3% 6 mph NW 81%
4 AM 17° Clear 3% 7 mph NW 83%
5 AM 17° Clear 3% 7 mph NW 84%
6 AM 16° Clear 3% 7 mph NW 82%
7 AM 17° Clear 3% 7 mph NNW 80%
8 AM 18° Clear 3% 7 mph NNW 73%
9 AM 21° Clear 3% 7 mph NNW 64%
10 AM 23° Clear 3% 8 mph NNW 56%
11 AM 24° Clear 3% 8 mph N 52%
12 PM 25° Clear 4% 8 mph N 50%
1 PM 26° Clear 4% 8 mph N 49%
2 PM 27° Clear 4% 8 mph N 48%
3 PM 27° Clear 4% 8 mph N 48%
4 PM 27° Clear 4% 7 mph N 48%
5 PM 27° Clear 4% 7 mph NNE 51%
6 PM 27° Clear 4% 6 mph NNE 56%
7 PM 27° Clear 4% 5 mph NE 61%
15-Day Forecast
Today
7/29
Clear
20%
16°
26°
Thu
7/30
Clear
5%
16°
27°
Fri
7/31
Mostly Cloudy
36%
18°
31°
Sat
8/1
Overcast
77%
18°
26°
Sun
8/2
Fog
45%
16°
26°
Mon
8/3
Clear
38%
15°
28°
Tue
8/4
Partly Cloudy
15%
17°
31°
Wed
8/5
Drizzle
54%
18°
32°
Thu
8/6
Rain
73%
19°
30°
Fri
8/7
Drizzle
47%
18°
31°
Sat
8/8
Drizzle
60%
17°
30°
Sun
8/9
Drizzle
60%
19°
29°
Mon
8/10
Drizzle
60%
18°
28°
Tue
8/11
Drizzle
60%
18°
28°
Wed
8/12
Drizzle
60%
17°
27°
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 6.1 µg/m³
O3
Ground-level ozone
21 AQI 24 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Today 34 Good 21 34
Fri 55 Moderate 28 55
Sat 60 Moderate 44 60
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 LCL0°C Temperature (°C) Pressure (hPa)
Temp Dewpoint Parcel (SB) CAPE CIN Dry adiabat Moist adiabat Mixing ratio
RAP
Valid Wed Jul 29, 23:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 50 60 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE0 J/kg
MLCAPE4 J/kg
MUCAPE0 J/kg
SBCIN-9707 J/kg
MLCIN0 J/kg
Lifted Index6.0
Kinematics
0–6 km Shear23 kt
0–1 km Shear15 kt
Eff. Shear—
0–1 km SRH-49
0–3 km SRH-53
Eff. SRH—
Storm Motion323° @ 26 kt
0–1 km EHI-0.0
Composite Parameters
Sig. Tornado-0.0
STP (eff)—
Supercell—
K-Index10.7
Thermo & Levels
PWAT0.82 in
0–3 km LR5.7 °C/km
700–500 LR5.1 °C/km
Total Totals36.4
LCL863 hPa
LFC—
EL—
Freezing Lvl13,898 ft