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Saybrook, Illinois

Village in McLean County, Illinois

Air quality

The air at Saybrook

Index 21, good, led by ozone. Read at 5 AM from its reporting area, Champaign (IL), 19 miles off.

21Good
  • Fine particles (PM2.5)11Good-
  • Ozone21Good-

The days ahead

Good each day through Mon Oct 19, led by fine particles. Yesterday measured 42, good.

Smoke, the next 45 hours

No smoke near the ground through Sun 1 AM.

FriSat

Precipitation

What has fallen at Saybrook

0.20 in in the last 24 hours, 0.28 in over the last 3 days, to Fri 4 AM. Measured by radar and rain gauges, as water.

Last 24 hours
0.20in
Last 3 days
0.28in

Visibility

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

Visibility stays 8 miles or more through Sun 1 AM, lowest 9 miles Fri 1 PM.

FriSat

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

What is measuring near here

The 7 instruments nearest Saybrook, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 4.2 miles away.

measured now5 instruments

measured daily2 instruments

FisherFSHI2

At a cooperative observer's station/11.9 mi away/717 ft/94 ft below here

snowfall, snow depth, precip, high, low

Rank-

Station report

The weather at Bloomington/Norm, drawn

The nearest airport reporting now, 20.8 mi from Saybrook, Illinois. From its report of Oct 16, 2026, 5:38 AM local time: 3 of its 6 sheets.

The sky

Broken at 2,200 ft; the ceiling is 2,200 ft; visibility 10 mi or more.

Section of the sky over Bloomington/Norm, height above the station to scale: broken cloud with its base at 2,200 feet, the ceiling at 2,200 feet, and visibility of 10 mi or more.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT BMIFIG. A THE SKY OVER BLOOMINGTON/NORMSECTION, 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 STATION05001,0001,5002,0002,5003,0003,500ETAGESLOWTHE STATIONTHE CEILOMETER READS TO 12,000 FT, ABOVE THIS SHEETBKN 2,200 FTBROKEN, 5 TO 7 EIGHTHS OF THE SKYCEILING 2,200 FTVISIBILITY, MILES: 10 MI OR MORE0510TITLEBloomington/Norm, the skySTATION REPORT · ASOS BMITYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 1 of 6DATE2026-10-16IDSR-BMI-1DRAWN AS linework on paperSOURCES FB-SKY-001, FB-SKY-017, FB-SKY-016, FB-SKY-018

The air

48.2 F with a dew point of 44.6 F, 87 per cent relative humidity. Air lifted from the station would cool to its dew point, where cloud forms, about 800 ft up; the lowest cloud reported is at 2,200 ft.

Chart of the air at Bloomington/Norm: temperature 48.2 degrees Fahrenheit and dew point 44.6, 87 per cent relative humidity; air lifted from the station cools along the dry rate and meets its dew point about 800 feet above the station, against the lowest cloud reported at 2,200 feet; height to scale.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT BMIFIG. B THE AIR AT BLOOMINGTON/NORMTHE REPORTED TEMPERATURE AND DEW POINT, AND AIR LIFTED FROM THE STATION WITHOUT MIXING UNTIL IT SATURATES; HEIGHT ABOVE THE STATION TO SCALEFT ABOVE THE STATION01,0002,0003,00030 F40 F50 F60 FSATURATES 800 FT ABOVE THE STATION, AT 43.7 FLOWEST CLOUD REPORTED, BKN 2,200 FTTEMPERATURE 48.2 FDEW POINT 44.6 FSPREAD 3.6 FRELATIVE HUMIDITY 87 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 POINTTITLEBloomington/Norm, the airSTATION REPORT · ASOS BMITYPECHARTSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 2 of 6DATE2026-10-16IDSR-BMI-2DRAWN AS linework on paperSOURCES FB-WAT-020, FB-WAT-002, FB-ENG-011, FB-ENG-005

The wind

From the west northwest (300 degrees) at 18 mph, gusting 23 mph: force 4, a moderate breeze on the Beaufort scale. The strongest gust today was 36 mph.

Plan of the wind at Bloomington/Norm, north up: blowing from 300 degrees, the west northwest, at 18 miles an hour, gusting 23; beside it the Beaufort scale from calm to hurricane force, force 4, moderate breeze, marked.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT BMIFIG. C THE WIND AT BLOOMINGTON/NORMPLAN, NORTH UP: THE WIND AS REPORTED, AND WHERE IT SITS ON THE BEAUFORT SCALENESWTHE STATIONFROM 300°BEAUFORT FORCELEAST WIND, MPH0CALM01LIGHT AIR12LIGHT BREEZE43GENTLE BREEZE84MODERATE BREEZE13NOW, 18 MPH5FRESH BREEZE19GUST, 23 MPH6STRONG BREEZE257NEAR GALE328GALE399STRONG GALE4710STORM5511VIOLENT STORM6412HURRICANE FORCE73TITLEBloomington/Norm, the windSTATION REPORT · ASOS BMITYPEPLAN north upSCALENOT TO SCALEREVAS REPORTED SHEET 3 of 6DATE2026-10-16IDSR-BMI-3DRAWN AS linework on paperSOURCES FB-EVT-150, FB-ENG-008, FB-INS-002

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

0in

Snow on the ground

Measured at Fisher (FSHI2), 11.9 miles from here, read 13 Oct, 07:00. measured daily

Elsewhere in Illinois

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

Near Saybrook

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

Near Saybrook

River and lake gauges