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Flossmoor, Illinois

Village in Cook County, Illinois

Air quality

The air at Flossmoor

Index 10, good, led by fine particles. Read at 3 AM from its reporting area, South and West Suburbs (Chicago) (IL), 14 miles off.

10Good
  • Fine particles (PM2.5)10Good9.3 mi
  • Ozone9Good9 ppb9.3 mi
  • Coarse particles (PM10)4Good12.9 mi
  • Nitrogen dioxide5Good5.5 ppb20.4 mi
  • Sulfur dioxide0Good0.4 ppb12.3 mi

The days ahead

Good each day through Mon Oct 19, led by fine particles. Yesterday measured 35, good.

Smoke, the next 41 hours

No smoke near the ground through Sat 7 PM.

FriSat

Precipitation

What has fallen at Flossmoor

0.46 in in the last 24 hours, 0.59 in over the last 3 days, to Fri 2 AM. Measured by radar and rain gauges, as water.

Last 24 hours
0.46in
Last 3 days
0.59in

Visibility

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

Visibility stays 9 miles or more through Sat 7 PM, lowest 10 miles Fri 3 AM.

FriSat

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

What is measuring near here

The 6 instruments nearest Flossmoor, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 0.6 miles away.

measured now4 instruments

MattesonMTTI2

At a river or reservoir gauge/2.9 mi away/698 ft/28 ft above here

temp, wind, gust, humidity, pressure

Rank974of 1,393

measured daily2 instruments

Flossmoor 0.6 NIL-CK-436

In a volunteer observer's own ground/0.6 mi away/682 ft/12 ft above here

precip, snowfall, snow depth

Rank-

Station report

The weather at Chicago/Lansing, drawn

The nearest airport reporting now, 8.1 mi from Flossmoor, Illinois. From its report of Oct 16, 2026, 3:35 AM local time: 3 of its 6 sheets.

The sky

Overcast at 1,800 ft; the ceiling is 1,800 ft; visibility 10 mi or more.

Section of the sky over Chicago/Lansing, height above the station to scale: overcast cloud with its base at 1,800 feet, the ceiling at 1,800 feet, and visibility of 10 mi or more.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT IGQFIG. A THE SKY OVER CHICAGO/LANSINGSECTION, 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 1,800 FTOVERCAST, 8 EIGHTHS OF THE SKYCEILING 1,800 FTVISIBILITY, MILES: 10 MI OR MORE0510TITLEChicago/Lansing, the skySTATION REPORT · ASOS IGQTYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 1 of 6DATE2026-10-16IDSR-IGQ-1DRAWN AS linework on paperSOURCES FB-SKY-001, FB-SKY-017, FB-SKY-016, FB-SKY-018

The air

54.0 F with a dew point of 48.2 F, 81 per cent relative humidity. Air lifted from the station would cool to its dew point, where cloud forms, about 1,300 ft up; the lowest cloud reported is at 1,800 ft.

Chart of the air at Chicago/Lansing: temperature 54.0 degrees Fahrenheit and dew point 48.2, 81 per cent relative humidity; air lifted from the station cools along the dry rate and meets its dew point about 1,300 feet above the station, against the lowest cloud reported at 1,800 feet; height to scale.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT IGQFIG. B THE AIR AT CHICAGO/LANSINGTHE 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 FSATURATES 1,300 FT ABOVE THE STATION, AT 46.8 FLOWEST CLOUD REPORTED, OVC 1,800 FTTEMPERATURE 54.0 FDEW POINT 48.2 FSPREAD 5.8 FRELATIVE HUMIDITY 81 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 POINTTITLEChicago/Lansing, the airSTATION REPORT · ASOS IGQTYPECHARTSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 2 of 6DATE2026-10-16IDSR-IGQ-2DRAWN AS linework on paperSOURCES FB-WAT-002, FB-ENG-011, FB-ENG-005

The wind

From the west northwest (290 degrees) at 15 mph, gusting 23 mph: force 4, a moderate breeze on the Beaufort scale. The strongest gust today was 28 mph.

Plan of the wind at Chicago/Lansing, north up: blowing from 290 degrees, the west northwest, at 15 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 IGQFIG. C THE WIND AT CHICAGO/LANSINGPLAN, NORTH UP: THE WIND AS REPORTED, AND WHERE IT SITS ON THE BEAUFORT SCALENESWTHE STATIONFROM 290°BEAUFORT FORCELEAST WIND, MPH0CALM01LIGHT AIR12LIGHT BREEZE43GENTLE BREEZE84MODERATE BREEZE13NOW, 15 MPH5FRESH BREEZE19GUST, 23 MPH6STRONG BREEZE257NEAR GALE328GALE399STRONG GALE4710STORM5511VIOLENT STORM6412HURRICANE FORCE73TITLEChicago/Lansing, the windSTATION REPORT · ASOS IGQTYPEPLAN north upSCALENOT TO SCALEREVAS REPORTED SHEET 3 of 6DATE2026-10-16IDSR-IGQ-3DRAWN AS linework on paperSOURCES FB-EVT-150, FB-ENG-008, FB-INS-002

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

0in

Snow on the ground

Measured at Park Forest Water (PKFI2), 3.1 miles from here, read 15 Oct, 05:00. measured daily

Elsewhere in Illinois

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

Near Flossmoor

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

Near Flossmoor

River and lake gauges