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South Lyon, Michigan

City in Oakland County, Michigan

Air quality

The air at South Lyon

Index 51, moderate, led by fine particles. Read at 1 AM from its reporting area, Southeast (MI), 15 miles off.

51Moderate
  • Fine particles (PM2.5)51Moderate15.4 mi
  • Ozone22Good-
  • Coarse particles (PM10)15Good-
  • Nitrogen dioxide5Good5.5 ppb20.2 mi

The days ahead

Good each day through Today, led by ozone. Yesterday measured 26, good.

Smoke, the next 43 hours

No smoke near the ground through Sat 8 PM.

FriSat

Precipitation

What has fallen at South Lyon

0.13 in in the last 24 hours, 0.16 in over the last 3 days, to Fri 1 AM. Measured by radar and rain gauges, as water.

Last 24 hours
0.13in
Last 3 days
0.16in

Visibility

How far you can see at South Lyon, the next 43 hours

Visibility stays 7 miles or more through Sat 8 PM, lowest 8 miles Fri 2 AM.

FriSat

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

What is measuring near here

The 6 instruments nearest South Lyon, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 1.5 miles away.

measured now4 instruments

I96Mm1529MC208

Beside a road/3.8 mi away/899 ft/35 ft below here

temp, pavement temp, wind, visibility, precip

Rank-

Detroit/WillowYIP

At an airfield/16.7 mi away/705 ft/229 ft below here

temp, wind, gust, visibility, precip, pressure

Rank2of 979

measured daily2 instruments

South Lyon 1.6 NEMI-OK-191

In a volunteer observer's own ground/1.5 mi away/981 ft/47 ft above here

precip, snowfall, snow depth

Rank-

Station report

The weather at Detroit/Willow, drawn

The nearest airport reporting now, 16.7 mi from South Lyon, Michigan. From its report of Oct 16, 2026, 1:53 AM local time: 3 of its 6 sheets.

The sky

Overcast at 600 ft; the ceiling is 600 ft; visibility 5 mi.

Section of the sky over Detroit/Willow, height above the station to scale: overcast cloud with its base at 600 feet, the ceiling at 600 feet, and visibility of 5 mi.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT YIPFIG. A THE SKY OVER DETROIT/WILLOWSECTION, 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 STATION05001,0001,5002,0002,5003,000ETAGESLOWTHE STATIONTHE CEILOMETER READS TO 12,000 FT, ABOVE THIS SHEETOVC 600 FTOVERCAST, 8 EIGHTHS OF THE SKYCEILING 600 FTVISIBILITY, MILES: 5 MI0510TITLEDetroit/Willow, the skySTATION REPORT · ASOS YIPTYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 1 of 6DATE2026-10-16IDSR-YIP-1DRAWN AS linework on paperSOURCES FB-SKY-001, FB-SKY-017, FB-SKY-016, FB-SKY-018

The air

65.0 F with a dew point of 63.0 F, 93 per cent relative humidity. Air lifted from the station would cool to its dew point, where cloud forms, about 500 ft up; the lowest cloud reported is at 600 ft.

Chart of the air at Detroit/Willow: temperature 65.0 degrees Fahrenheit and dew point 63.0, 93 per cent relative humidity; air lifted from the station cools along the dry rate and meets its dew point about 500 feet above the station, against the lowest cloud reported at 600 feet; height to scale.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT YIPFIG. B THE AIR AT DETROIT/WILLOWTHE 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 F80 FSATURATES 500 FT ABOVE THE STATION, AT 62.5 FLOWEST CLOUD REPORTED, OVC 600 FTTEMPERATURE AND DEW POINT 65.0 F, 63.0 FRELATIVE HUMIDITY 93 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 POINTTITLEDetroit/Willow, the airSTATION REPORT · ASOS YIPTYPECHARTSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 2 of 6DATE2026-10-16IDSR-YIP-2DRAWN AS linework on paperSOURCES FB-WAT-020, FB-WAT-002, FB-ENG-011, FB-ENG-005

The wind

From the southwest (220 degrees) at 15 mph: force 4, a moderate breeze on the Beaufort scale. The strongest gust today was 24 mph.

Plan of the wind at Detroit/Willow, north up: blowing from 220 degrees, the southwest, at 15 miles an hour; beside it the Beaufort scale from calm to hurricane force, force 4, moderate breeze, marked.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT YIPFIG. C THE WIND AT DETROIT/WILLOWPLAN, NORTH UP: THE WIND AS REPORTED, AND WHERE IT SITS ON THE BEAUFORT SCALENESWTHE STATIONFROM 220°BEAUFORT FORCELEAST WIND, MPH0CALM01LIGHT AIR12LIGHT BREEZE43GENTLE BREEZE84MODERATE BREEZE13NOW, 15 MPH5FRESH BREEZE196STRONG BREEZE257NEAR GALE328GALE399STRONG GALE4710STORM5511VIOLENT STORM6412HURRICANE FORCE73TITLEDetroit/Willow, the windSTATION REPORT · ASOS YIPTYPEPLAN north upSCALENOT TO SCALEREVAS REPORTED SHEET 3 of 6DATE2026-10-16IDSR-YIP-3DRAWN AS linework on paperSOURCES FB-EVT-150, FB-ENG-008, FB-INS-002

The full report of Detroit/Willow, in 6 sheets, each beside the Field Book plates that explain it

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Snow on the ground

Elsewhere in Michigan

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

Near South Lyon

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

Near South Lyon

River and lake gauges