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Mount Prospect, Illinois

Village in Cook County, Illinois

Air quality

The air at Mount Prospect

Index 12, good, led by ozone. Read at 2 AM from its reporting area, North and West Suburbs (Chicago) (IL), 19 miles off.

12Good
  • Fine particles (PM2.5)7Good-
  • Ozone12Good-
  • Coarse particles (PM10)5Good-

The days ahead

Good each day through Mon Oct 19, led by fine particles. Yesterday measured 32, good.

Smoke, the next 41 hours

No smoke near the ground through Sat 7 PM.

FriSat

Precipitation

What has fallen at Mount Prospect

0.52 in in the last 24 hours, 1.30 in over the last 3 days, to Fri 1 AM. Measured by radar and rain gauges, as water.

Last 24 hours
0.52in
Last 3 days
1.30in

Visibility

How far you can see at Mount Prospect, the next 41 hours

Visibility stays 9 miles or more through Sat 7 PM, lowest 9 miles Fri 12 PM.

FriSat

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

What is measuring near here

The 6 instruments nearest Mount Prospect, 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

PalwaukeePWK

At an airfield/4.6 mi away/666 ft/6 ft above here

temp, wind, gust, visibility, precip, pressure

Rank10of 1,393

measured daily2 instruments

Lake Zurich (Hydro)LKZI2

At a cooperative observer's station/10.8 mi away/807 ft/147 ft above here

snowfall, snow depth, precip, high, low

Rank-

Station report

The weather at Palwaukee, drawn

The nearest airport reporting now, 4.6 mi from Mount Prospect, Illinois. From its report of Oct 16, 2026, 1:52 AM local time: 3 of its 6 sheets.

The sky

Overcast at 2,100 ft; the ceiling is 2,100 ft; visibility 10 mi or more.

Section of the sky over Palwaukee, height above the station to scale: overcast cloud with its base at 2,100 feet, the ceiling at 2,100 feet, and visibility of 10 mi or more.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT PWKFIG. A THE SKY OVER PALWAUKEESECTION, 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 SHEETOVC 2,100 FTOVERCAST, 8 EIGHTHS OF THE SKYCEILING 2,100 FTVISIBILITY, MILES: 10 MI OR MORE0510TITLEPalwaukee, the skySTATION REPORT · ASOS PWKTYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 1 of 6DATE2026-10-16IDSR-PWK-1DRAWN AS linework on paperSOURCES FB-SKY-001, FB-SKY-017, FB-SKY-016, FB-SKY-018

The air

56.0 F with a dew point of 49.0 F, 77 per cent relative humidity. Air lifted from the station would cool to its dew point, where cloud forms, about 1,600 ft up; the lowest cloud reported is at 2,100 ft.

Chart of the air at Palwaukee: temperature 56.0 degrees Fahrenheit and dew point 49.0, 77 per cent relative humidity; air lifted from the station cools along the dry rate and meets its dew point about 1,600 feet above the station, against the lowest cloud reported at 2,100 feet; height to scale.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT PWKFIG. B THE AIR AT PALWAUKEETHE 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 1,600 FT ABOVE THE STATION, AT 47.4 FLOWEST CLOUD REPORTED, OVC 2,100 FTTEMPERATURE 56.0 FDEW POINT 49.0 FSPREAD 7.0 FRELATIVE HUMIDITY 77 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 POINTTITLEPalwaukee, the airSTATION REPORT · ASOS PWKTYPECHARTSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 2 of 6DATE2026-10-16IDSR-PWK-2DRAWN AS linework on paperSOURCES FB-WAT-002, FB-ENG-011, FB-ENG-005

The wind

From the west northwest (300 degrees) at 17 mph, gusting 28 mph: force 4, a moderate breeze on the Beaufort scale. The strongest gust today was 35 mph.

Plan of the wind at Palwaukee, north up: blowing from 300 degrees, the west northwest, at 17 miles an hour, gusting 28; beside it the Beaufort scale from calm to hurricane force, force 4, moderate breeze, marked.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT PWKFIG. C THE WIND AT PALWAUKEEPLAN, NORTH UP: THE WIND AS REPORTED, AND WHERE IT SITS ON THE BEAUFORT SCALENESWTHE STATIONFROM 300°BEAUFORT FORCELEAST WIND, MPH0CALM01LIGHT AIR12LIGHT BREEZE43GENTLE BREEZE84MODERATE BREEZE13NOW, 17 MPH5FRESH BREEZE196STRONG BREEZE25GUST, 28 MPH7NEAR GALE328GALE399STRONG GALE4710STORM5511VIOLENT STORM6412HURRICANE FORCE73TITLEPalwaukee, the windSTATION REPORT · ASOS PWKTYPEPLAN north upSCALENOT TO SCALEREVAS REPORTED SHEET 3 of 6DATE2026-10-16IDSR-PWK-3DRAWN AS linework on paperSOURCES FB-EVT-150, FB-ENG-008, FB-INS-002

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

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Snow on the ground

Elsewhere in Illinois

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

Near Mount Prospect

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

Near Mount Prospect

River and lake gauges