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Algonac, Michigan

City in St. Clair County, Michigan

Air quality

The air at Algonac

Index 26, good, led by ozone. Read at 11 PM from its reporting area, Southeast (MI), 43 miles off.

26Good
  • Fine particles (PM2.5)23Good15 mi
  • Ozone26Good21 ppb15 mi
  • Coarse particles (PM10)8Good-
  • Sulfur dioxide6Good4.6 ppb23.4 mi

The days ahead

Good each day through Today, led by ozone. Yesterday measured 38, good.

Smoke, the next 45 hours

No smoke near the ground through Sat 8 PM.

FriSat

Precipitation

What has fallen at Algonac

None in the last 24 hours; 0.45 in over the last 3 days, to Thu 11 PM. Measured by radar and rain gauges, as water.

Last 24 hours
0.00in
Last 3 days
0.45in

Visibility

How far you can see at Algonac, the next 45 hours

Mist or haze: visibility falls to 2 miles Fri 12 AM.

FriSat

On the radar over Algonac, MichiganReflectivityStorm topsRain rateRain, last 24 hoursForecast temperatureForecast rain totalEvery picture

What is measuring near here

The 6 instruments nearest Algonac, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 0.3 miles away.

measured now4 instruments

M-1MC130

Beside a road/13.5 mi away/604 ft/21 ft above here

temp, pavement temp, wind, visibility, precip

Rank-

measured daily2 instruments

AlgonacAGCM4

At a cooperative observer's station/0.3 mi away/600 ft/17 ft above here

snowfall, snow depth, precip, high, low

Rank76of 979

Fair Haven 0.6 NMI-SC-25

In a volunteer observer's own ground/7.2 mi away/586 ft/3 ft above here

precip, snowfall, snow depth

Rank-

Station report

The weather at Selfridge ANGB, drawn

The nearest airport reporting now, 15.3 mi from Algonac, Michigan. From its report of Oct 15, 2026, 11:35 PM local time: 3 of its 6 sheets.

The sky

A few clouds at 500 ft, broken at 1,800 ft, overcast at 2,700 ft; the ceiling is 1,800 ft; visibility 7 mi.

Section of the sky over Selfridge ANGB, height above the station to scale: a few clouds cloud with its base at 500 feet, broken cloud with its base at 1,800 feet, overcast cloud with its base at 2,700 feet, the ceiling at 1,800 feet, and visibility of 7 mi.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT MTCFIG. A THE SKY OVER SELFRIDGE ANGBSECTION, HEIGHT ABOVE THE STATION TO SCALE, EACH LAYER AT THE HEIGHT OF ITS BASE AS REPORTED; COVER IN EIGHTHS OF THE SKY; TOPS NOT MEASUREDFT ABOVE THE STATION01,0002,0003,0004,0005,000ETAGESLOWTHE STATIONTHE CEILOMETER READS TO 12,000 FT, ABOVE THIS SHEETOVC 2,700 FTOVERCAST, 8 EIGHTHS OF THE SKYBKN 1,800 FTBROKEN, 5 TO 7 EIGHTHS OF THE SKYFEW 500 FTA FEW CLOUDS, 1 TO 2 EIGHTHS OF THE SKYCEILING 1,800 FTVISIBILITY, MILES: 7 MI0510TITLESelfridge ANGB, the skySTATION REPORT · ASOS MTCTYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 1 of 6DATE2026-10-16IDSR-MTC-1DRAWN AS linework on paperSOURCES FB-SKY-001, FB-SKY-017, FB-SKY-016, FB-SKY-018

The air

60.8 F with a dew point of 59.0 F, 94 per cent relative humidity. Air lifted from the station would cool to its dew point, where cloud forms, about 400 ft up; the lowest cloud reported is at 500 ft.

Chart of the air at Selfridge ANGB: temperature 60.8 degrees Fahrenheit and dew point 59.0, 94 per cent relative humidity; air lifted from the station cools along the dry rate and meets its dew point about 400 feet above the station, against the lowest cloud reported at 500 feet; height to scale.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT MTCFIG. B THE AIR AT SELFRIDGE ANGBTHE REPORTED TEMPERATURE AND DEW POINT, AND AIR LIFTED FROM THE STATION WITHOUT MIXING UNTIL IT SATURATES; HEIGHT ABOVE THE STATION TO SCALEFT ABOVE THE STATION01,0002,0003,00050 F60 F70 FSATURATES 400 FT ABOVE THE STATION, AT 58.5 FLOWEST CLOUD REPORTED, FEW 500 FTTEMPERATURE AND DEW POINT 60.8 F, 59.0 FRELATIVE HUMIDITY 94 PER CENTTHE AIR COOLS ABOUT 5.4 F EACH 1,000 FT IT RISES, AND ITS DEW POINT ABOUT 1 FSOLID: THE LIFTED AIR'S TEMPERATURE; DASHED: ITS DEW POINTTITLESelfridge ANGB, the airSTATION REPORT · ASOS MTCTYPECHARTSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 2 of 6DATE2026-10-16IDSR-MTC-2DRAWN AS linework on paperSOURCES FB-WAT-020, FB-WAT-002, FB-ENG-011, FB-ENG-005

The wind

From the south southeast (150 degrees) at 9 mph: force 3, a gentle breeze on the Beaufort scale.

Plan of the wind at Selfridge ANGB, north up: blowing from 150 degrees, the south southeast, at 9 miles an hour; beside it the Beaufort scale from calm to hurricane force, force 3, gentle breeze, marked.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT MTCFIG. C THE WIND AT SELFRIDGE ANGBPLAN, NORTH UP: THE WIND AS REPORTED, AND WHERE IT SITS ON THE BEAUFORT SCALENESWTHE STATIONFROM 150°BEAUFORT FORCELEAST WIND, MPH0CALM01LIGHT AIR12LIGHT BREEZE43GENTLE BREEZE8NOW, 9 MPH4MODERATE BREEZE135FRESH BREEZE196STRONG BREEZE257NEAR GALE328GALE399STRONG GALE4710STORM5511VIOLENT STORM6412HURRICANE FORCE73TITLESelfridge ANGB, the windSTATION REPORT · ASOS MTCTYPEPLAN north upSCALENOT TO SCALEREVAS REPORTED SHEET 3 of 6DATE2026-10-16IDSR-MTC-3DRAWN AS linework on paperSOURCES FB-EVT-150, FB-ENG-008, FB-INS-002

The full report of Selfridge ANGB, in 6 sheets, each beside the Field Book plates that explain it

0in

Snow on the ground

Measured at Algonac (AGCM4), 0.3 miles from here, read 15 Oct, 08:00. measured daily

Elsewhere in Michigan

66 places, each with its own forecast and its own instruments.

Near Algonac

The nearest places, each with its own forecast and the instruments nearest it.

Near Algonac

River and lake gauges