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Delafield, Wisconsin

City in Waukesha County, Wisconsin

Air quality

The air at Delafield

Index 18, good, led by ozone. Read at 7 AM from its reporting area, Kettle Moraine South (WI), 21 miles off.

18Good
  • Fine particles (PM2.5)8Good10 mi
  • Ozone18Good18 ppb10 mi
  • Coarse particles (PM10)3Good10 mi

The days ahead

Good each day through Sat Oct 17, led by ozone. Yesterday measured 23, good.

Smoke, the next 42 hours

No smoke near the ground through Sun 1 AM.

FriSat

Precipitation

What has fallen at Delafield

0.25 in in the last 24 hours, 0.30 in over the last 3 days, to Fri 7 AM. Measured by radar and rain gauges, as water.

Last 24 hours
0.25in
Last 3 days
0.30in

Visibility

How far you can see at Delafield, the next 42 hours

Visibility stays 5 miles or more through Sun 1 AM, lowest 5 miles Fri 3 PM.

FriSat

On the radar over Delafield, WisconsinReflectivityStorm topsRain rateRain, last 24 hoursForecast temperatureForecast rain totalEvery picture

What is measuring near here

The 6 instruments nearest Delafield, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 1.9 miles away.

measured now4 instruments

Pewaukee WWTPPWKW3

At a water treatment plant/5.5 mi away/912 ft/10 ft above here

temp, wind, gust, humidity, pressure

Rank-

measured daily2 instruments

Oconomowoc 4.5 SEWI-WK-26

In a volunteer observer's own ground/1.9 mi away/887 ft/15 ft below here

precip, snowfall, snow depth

Rank-

OconomowocOCOW3

At a cooperative observer's station/5.6 mi away/860 ft/42 ft below here

snowfall, snow depth, precip, high, low

Rank209of 1,313

Station report

The weather at Waukesha Cnty, drawn

The nearest airport reporting now, 8.6 mi from Delafield, Wisconsin. From its report of Oct 16, 2026, 7:45 AM local time: 3 of its 6 sheets.

The sky

Scattered at 1,400 ft, broken at 2,100 ft, overcast at 3,400 ft; the ceiling is 2,100 ft; visibility 5 mi.

Section of the sky over Waukesha Cnty, height above the station to scale: scattered cloud with its base at 1,400 feet, broken cloud with its base at 2,100 feet, overcast cloud with its base at 3,400 feet, the ceiling at 2,100 feet, and visibility of 5 mi.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT UESFIG. A THE SKY OVER WAUKESHA CNTYSECTION, 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 STATION01,0002,0003,0004,0005,0006,000ETAGESLOWTHE STATIONOVC 3,400 FTOVERCAST, 8 EIGHTHS OF THE SKYBKN 2,100 FTBROKEN, 5 TO 7 EIGHTHS OF THE SKYSCT 1,400 FTSCATTERED, 3 TO 4 EIGHTHS OF THE SKYCEILING 2,100 FTVISIBILITY, MILES: 5 MI0510TITLEWaukesha Cnty, the skySTATION REPORT · ASOS UESTYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 1 of 6DATE2026-10-16IDSR-UES-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 48.2 F, 100 per cent relative humidity. The air is saturated at the ground; the lowest cloud reported is at 1,400 ft.

Chart of the air at Waukesha Cnty: temperature 48.2 degrees Fahrenheit and dew point 48.2, 100 per cent relative humidity; the air saturated at the ground, against the lowest cloud reported at 1,400 feet; height to scale.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT UESFIG. B THE AIR AT WAUKESHA CNTYTHE 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 FSATURATED AT THE GROUNDLOWEST CLOUD REPORTED, SCT 1,400 FTTEMPERATURE AND DEW POINT 48.2 F, 48.2 FRELATIVE HUMIDITY 100 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 POINTTITLEWaukesha Cnty, the airSTATION REPORT · ASOS UESTYPECHARTSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 2 of 6DATE2026-10-16IDSR-UES-2DRAWN AS linework on paperSOURCES FB-WAT-020, FB-WAT-002, FB-ENG-011, FB-ENG-005

The wind

From the west northwest (290 degrees) at 13 mph, gusting 24 mph: force 4, a moderate breeze on the Beaufort scale. The strongest gust today was 35 mph.

Plan of the wind at Waukesha Cnty, north up: blowing from 290 degrees, the west northwest, at 13 miles an hour, gusting 24; beside it the Beaufort scale from calm to hurricane force, force 4, moderate breeze, marked.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT UESFIG. C THE WIND AT WAUKESHA CNTYPLAN, NORTH UP: THE WIND AS REPORTED, AND WHERE IT SITS ON THE BEAUFORT SCALENESWTHE STATIONFROM 290°BEAUFORT FORCELEAST WIND, MPH0CALM01LIGHT AIR12LIGHT BREEZE43GENTLE BREEZE84MODERATE BREEZE13NOW, 13 MPH5FRESH BREEZE19GUST, 24 MPH6STRONG BREEZE257NEAR GALE328GALE399STRONG GALE4710STORM5511VIOLENT STORM6412HURRICANE FORCE73TITLEWaukesha Cnty, the windSTATION REPORT · ASOS UESTYPEPLAN north upSCALENOT TO SCALEREVAS REPORTED SHEET 3 of 6DATE2026-10-16IDSR-UES-3DRAWN AS linework on paperSOURCES FB-EVT-150, FB-ENG-008, FB-INS-002

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

0in

Snow on the ground

Measured at Oconomowoc (OCOW3), 5.6 miles from here, read 16 Oct, 07:00. measured daily

Elsewhere in Wisconsin

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

Near Delafield

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

Near Delafield

River and lake gauges