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Williamston, Michigan

City in Ingham County, Michigan

Air quality

The air at Williamston

Index 19, good, led by fine particles. Read at 4 AM from its reporting area, Lansing (MI), 23 miles off.

19Good
  • Fine particles (PM2.5)19Good15.2 mi
  • Ozone11Good9 ppb8.6 mi
  • Coarse particles (PM10)6Good15.2 mi
  • Nitrogen dioxide3Good3.7 ppb15.2 mi
  • Sulfur dioxide0Good0.7 ppb15.2 mi

The days ahead

Good each day through Today, led by ozone. Yesterday measured 23, good.

Smoke, the next 41 hours

No smoke near the ground through Sat 8 PM.

FriSat

Precipitation

What has fallen at Williamston

0.06 in in the last 24 hours, 0.10 in over the last 3 days, to Fri 3 AM. Measured by radar and rain gauges, as water.

Last 24 hours
0.06in
Last 3 days
0.10in

Visibility

How far you can see at Williamston, the next 41 hours

Visibility stays 8 miles or more through Sat 8 PM, lowest 8 miles Fri 6 AM.

FriSat

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

What is measuring near here

The 6 instruments nearest Williamston, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 1.9 miles away.

measured now4 instruments

MasonTEW

At an airfield/11.0 mi away/919 ft/47 ft above here

temp, wind, gust, visibility, precip, pressure

Rank850of 979

B-17MC121

Beside a road/29.2 mi away/906 ft/34 ft above here

temp, pavement temp, wind, visibility, precip

Rank-

measured daily2 instruments

Williamston 1.8 NNWMI-IH-49

In a volunteer observer's own ground/1.9 mi away/906 ft/34 ft above here

precip, snowfall, snow depth

Rank-

Waste Water PlantHOWM4

At a cooperative observer's station/18.8 mi away/906 ft/34 ft above here

snowfall, snow depth, precip, high, low

Rank-

Station report

The weather at Mason, drawn

The nearest airport reporting now, 11.0 mi from Williamston, Michigan. From its report of Oct 16, 2026, 4:35 AM local time: 3 of its 6 sheets.

The sky

Broken at 1,400 ft, overcast at 4,500 ft; the ceiling is 1,400 ft; visibility 10 mi or more.

Section of the sky over Mason, height above the station to scale: broken cloud with its base at 1,400 feet, overcast cloud with its base at 4,500 feet, the ceiling at 1,400 feet, and visibility of 10 mi or more.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT TEWFIG. A THE SKY OVER MASONSECTION, 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 STATION01,0002,0003,0004,0005,0006,0007,000ETAGESLOWMIDDLETHE STATIONTHE CEILOMETER READS TO 12,000 FT, ABOVE THIS SHEETOVC 4,500 FTOVERCAST, 8 EIGHTHS OF THE SKYBKN 1,400 FTBROKEN, 5 TO 7 EIGHTHS OF THE SKYCEILING 1,400 FTVISIBILITY, MILES: 10 MI OR MORE0510TITLEMason, the skySTATION REPORT · ASOS TEWTYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 1 of 6DATE2026-10-16IDSR-TEW-1DRAWN AS linework on paperSOURCES FB-SKY-001, FB-SKY-017, FB-SKY-016, FB-SKY-018

The air

60.3 F with a dew point of 55.6 F, 84 per cent relative humidity. Air lifted from the station would cool to its dew point, where cloud forms, about 1,100 ft up; the lowest cloud reported is at 1,400 ft.

Chart of the air at Mason: temperature 60.3 degrees Fahrenheit and dew point 55.6, 84 per cent relative humidity; air lifted from the station cools along the dry rate and meets its dew point about 1,100 feet above the station, against the lowest cloud reported at 1,400 feet; height to scale.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT TEWFIG. B THE AIR AT MASONTHE REPORTED TEMPERATURE AND DEW POINT, AND AIR LIFTED FROM THE STATION WITHOUT MIXING UNTIL IT SATURATES; HEIGHT ABOVE THE STATION TO SCALEFT ABOVE THE STATION01,0002,0003,00040 F50 F60 F70 FSATURATES 1,100 FT ABOVE THE STATION, AT 54.5 FLOWEST CLOUD REPORTED, BKN 1,400 FTTEMPERATURE 60.3 FDEW POINT 55.6 FSPREAD 4.7 FRELATIVE HUMIDITY 84 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 POINTTITLEMason, the airSTATION REPORT · ASOS TEWTYPECHARTSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 2 of 6DATE2026-10-16IDSR-TEW-2DRAWN AS linework on paperSOURCES FB-WAT-002, FB-ENG-011, FB-ENG-005

The wind

From the west (270 degrees) at 13 mph, gusting 20 mph: force 4, a moderate breeze on the Beaufort scale. The strongest gust today was 30 mph.

Plan of the wind at Mason, north up: blowing from 270 degrees, the west, at 13 miles an hour, gusting 20; beside it the Beaufort scale from calm to hurricane force, force 4, moderate breeze, marked.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT TEWFIG. C THE WIND AT MASONPLAN, NORTH UP: THE WIND AS REPORTED, AND WHERE IT SITS ON THE BEAUFORT SCALENESWTHE STATIONFROM 270°BEAUFORT FORCELEAST WIND, MPH0CALM01LIGHT AIR12LIGHT BREEZE43GENTLE BREEZE84MODERATE BREEZE13NOW, 13 MPH5FRESH BREEZE19GUST, 20 MPH6STRONG BREEZE257NEAR GALE328GALE399STRONG GALE4710STORM5511VIOLENT STORM6412HURRICANE FORCE73TITLEMason, the windSTATION REPORT · ASOS TEWTYPEPLAN north upSCALENOT TO SCALEREVAS REPORTED SHEET 3 of 6DATE2026-10-16IDSR-TEW-3DRAWN AS linework on paperSOURCES FB-EVT-150, FB-ENG-008, FB-INS-002

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

-

Snow on the ground

Elsewhere in Michigan

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

Near Williamston

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

Near Williamston

River and lake gauges