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Windsor, Illinois

City in Shelby County, Illinois

Air quality

The air at Windsor

Index 28, good, led by fine particles. Read at 10 PM from its reporting area, Decatur (IL), 35 miles off.

28Good
  • Fine particles (PM2.5)28Good-
  • Ozone14Good-

The days ahead

Good each day through Mon Oct 19, led by fine particles. Yesterday measured 45, good.

Smoke, the next 45 hours

No smoke near the ground through Sat 7 PM.

FriSat

Precipitation

What has fallen at Windsor

0.38 in in the last 24 hours, 0.44 in over the last 3 days, to Thu 10 PM. Measured by radar and rain gauges, as water.

Last 24 hours
0.38in
Last 3 days
0.44in

Visibility

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

Visibility stays 8 miles or more through Sat 7 PM, lowest 9 miles Thu 11 PM.

FriSat

On the radar over Windsor, IllinoisReflectivityStorm topsRain rateRain, last 24 hoursForecast temperatureForecast rain totalEvery picture

What is measuring near here

The 5 instruments nearest Windsor, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 0.2 miles away.

measured now3 instruments

measured daily2 instruments

WindsorWISI2

At a cooperative observer's station/0.2 mi away/712 ft/8 ft above here

snowfall, snow depth, precip, high, low

Rank167of 1,393

Mattoon 2.1 WIL-CE-17

In a volunteer observer's own ground/10.4 mi away/718 ft/14 ft above here

precip, snowfall, snow depth

Rank-

Station report

The weather at Mattoon/Charlest, drawn

The nearest airport reporting now, 17.1 mi from Windsor, Illinois. From its report of Oct 15, 2026, 10:53 PM local time: 3 of its 6 sheets.

The sky

A few clouds at 4,300 ft, broken at 5,500 ft, broken at 8,500 ft; the ceiling is 5,500 ft; visibility 10 mi or more.

Section of the sky over Mattoon/Charlest, height above the station to scale: a few clouds cloud with its base at 4,300 feet, broken cloud with its base at 5,500 feet, broken cloud with its base at 8,500 feet, the ceiling at 5,500 feet, and visibility of 10 mi or more.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT MTOFIG. A THE SKY OVER MATTOON/CHARLESTSECTION, 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 STATION02,5005,0007,50010,00012,50015,000ETAGESLOWMIDDLETHE STATIONTHE CEILOMETER READS TO 12,000 FTBKN 8,500 FTBROKEN, 5 TO 7 EIGHTHS OF THE SKYBKN 5,500 FTBROKEN, 5 TO 7 EIGHTHS OF THE SKYFEW 4,300 FTA FEW CLOUDS, 1 TO 2 EIGHTHS OF THE SKYCEILING 5,500 FTVISIBILITY, MILES: 10 MI OR MORE0510TITLEMattoon/Charlest, the skySTATION REPORT · ASOS MTOTYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 1 of 6DATE2026-10-16IDSR-MTO-1DRAWN AS linework on paperSOURCES FB-SKY-001, FB-SKY-017, FB-SKY-016, FB-SKY-018, FB-SKY-013, FB-SKY-014

The air

72.0 F with a dew point of 67.0 F, 84 per cent relative humidity. Air lifted from the station would cool to its dew point, where cloud forms, about 1,200 ft up; the lowest cloud reported is at 4,300 ft.

Chart of the air at Mattoon/Charlest: temperature 72.0 degrees Fahrenheit and dew point 67.0, 84 per cent relative humidity; air lifted from the station cools along the dry rate and meets its dew point about 1,200 feet above the station, against the lowest cloud reported at 4,300 feet; height to scale.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT MTOFIG. B THE AIR AT MATTOON/CHARLESTTHE REPORTED TEMPERATURE AND DEW POINT, AND AIR LIFTED FROM THE STATION WITHOUT MIXING UNTIL IT SATURATES; HEIGHT ABOVE THE STATION TO SCALEFT ABOVE THE STATION01,0002,0003,0004,0005,0006,00050 F60 F70 F80 FSATURATES 1,200 FT ABOVE THE STATION, AT 65.7 FLOWEST CLOUD REPORTED, FEW 4,300 FTTEMPERATURE 72.0 FDEW POINT 67.0 FSPREAD 5.0 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 POINTTITLEMattoon/Charlest, the airSTATION REPORT · ASOS MTOTYPECHARTSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 2 of 6DATE2026-10-16IDSR-MTO-2DRAWN AS linework on paperSOURCES FB-WAT-002, FB-ENG-011, FB-ENG-005

The wind

From the west southwest (250 degrees) at 10 mph: force 3, a gentle breeze on the Beaufort scale. The strongest gust today was 18 mph.

Plan of the wind at Mattoon/Charlest, north up: blowing from 250 degrees, the west southwest, at 10 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 MTOFIG. C THE WIND AT MATTOON/CHARLESTPLAN, NORTH UP: THE WIND AS REPORTED, AND WHERE IT SITS ON THE BEAUFORT SCALENESWTHE STATIONFROM 250°BEAUFORT FORCELEAST WIND, MPH0CALM01LIGHT AIR12LIGHT BREEZE43GENTLE BREEZE8NOW, 10 MPH4MODERATE BREEZE135FRESH BREEZE196STRONG BREEZE257NEAR GALE328GALE399STRONG GALE4710STORM5511VIOLENT STORM6412HURRICANE FORCE73TITLEMattoon/Charlest, the windSTATION REPORT · ASOS MTOTYPEPLAN north upSCALENOT TO SCALEREVAS REPORTED SHEET 3 of 6DATE2026-10-16IDSR-MTO-3DRAWN AS linework on paperSOURCES FB-EVT-150, FB-ENG-008, FB-INS-002

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

0in

Snow on the ground

Measured at Windsor (WISI2), 0.2 miles from here, read 15 Oct, 06:30. measured daily

Elsewhere in Illinois

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

Near Windsor

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

Near Windsor

River and lake gauges