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Mason, Michigan

City in Ingham County, Michigan

Air quality

The air at Mason

Index 27, good, led by fine particles. Read at 11 PM from its reporting area, Lansing (MI), 19 miles off.

27Good
  • Fine particles (PM2.5)27Good13.8 mi
  • Ozone21Good18 ppb13.8 mi
  • Coarse particles (PM10)8Good13.8 mi
  • Nitrogen dioxide5Good5.6 ppb13.8 mi
  • Sulfur dioxide0Good0.7 ppb13.8 mi

The days ahead

Good each day through Today, led by ozone. Yesterday measured 28, good.

Smoke, the next 45 hours

No smoke near the ground through Sat 8 PM.

FriSat

Precipitation

What has fallen at Mason

0.10 in in the last 24 hours, 0.21 in over the last 3 days, to Thu 11 PM. Measured by radar and rain gauges, as water.

Last 24 hours
0.10in
Last 3 days
0.21in

Visibility

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

Visibility stays 6 miles or more through Sat 8 PM, lowest 6 miles Fri 12 AM.

FriSat

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

What is measuring near here

The 5 instruments nearest Mason, 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 now3 instruments

MasonTEW

At an airfield/1.6 mi away/919 ft/29 ft above here

temp, wind, gust, visibility, precip, pressure

Rank850of 979

I96Mm0760MC149

Beside a road/30.5 mi away/761 ft/129 ft below here

temp, pavement temp, wind, visibility, precip

Rank-

measured daily2 instruments

Mason 0.4 SMI-IH-59

In a volunteer observer's own ground/0.3 mi away/985 ft/95 ft above here

precip, snowfall, snow depth

Rank-

Eaton RapidsETNM4

At a cooperative observer's station/11.0 mi away/869 ft/21 ft below here

snowfall, snow depth, precip, high, low

Rank38of 979

Station report

The weather at Mason, drawn

The nearest airport reporting now, 1.6 mi from Mason, Michigan. From its report of Oct 16, 2026, 12:15 AM local time: 3 of its 6 sheets.

The sky

Overcast at 400 ft; the ceiling is 400 ft; visibility 4 mi.

Section of the sky over Mason, height above the station to scale: overcast cloud with its base at 400 feet, the ceiling at 400 feet, and visibility of 4 mi.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 STATION05001,0001,5002,0002,5003,000ETAGESLOWTHE STATIONTHE CEILOMETER READS TO 12,000 FT, ABOVE THIS SHEETOVC 400 FTOVERCAST, 8 EIGHTHS OF THE SKYCEILING 400 FTVISIBILITY, MILES: 4 MI0510TITLEMason, 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

61.7 F with a dew point of 59.4 F, 92 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 400 ft.

Chart of the air at Mason: temperature 61.7 degrees Fahrenheit and dew point 59.4, 92 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 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 STATION01,0002,0003,00050 F60 F70 FSATURATES 500 FT ABOVE THE STATION, AT 58.8 FLOWEST CLOUD REPORTED, OVC 400 FTTEMPERATURE AND DEW POINT 61.7 F, 59.4 FRELATIVE HUMIDITY 92 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-020, FB-WAT-002, FB-ENG-011, FB-ENG-005

The wind

From the south southwest (210 degrees) at 3 mph: force 1, a light air on the Beaufort scale.

Plan of the wind at Mason, north up: blowing from 210 degrees, the south southwest, at 3 miles an hour; beside it the Beaufort scale from calm to hurricane force, force 1, light air, 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 210°BEAUFORT FORCELEAST WIND, MPH0CALM01LIGHT AIR1NOW, 3 MPH2LIGHT BREEZE43GENTLE BREEZE84MODERATE BREEZE135FRESH BREEZE196STRONG 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

0in

Snow on the ground

Measured at Eaton Rapids (ETNM4), 11.0 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 Mason

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

Near Mason

River and lake gauges