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Hartland, Wisconsin

Village in Waukesha County, Wisconsin

Air quality

The air at Hartland

Index 9, good, led by nitrogen dioxide. Read at 1 PM from its reporting area, Milwaukee-Ozaukee (WI), 20 miles off.

9Good
  • Fine particles (PM2.5)8Good8.4 mi
  • Coarse particles (PM10)6Good8.4 mi
  • Nitrogen dioxide9Good10.9 ppb23.5 mi
  • Carbon monoxide-0.3 ppm23.5 mi

The days ahead

Good each day through Sat Oct 17, led by ozone. Yesterday measured 19, good.

Smoke, the next 43 hours

No smoke near the ground through Sun 7 AM.

FriSatSun

Precipitation

What has fallen at Hartland

0.28 in in the last 24 hours, 0.32 in over the last 3 days, to Fri 12 PM. Measured by radar and rain gauges, as water.

Last 24 hours
0.28in
Last 3 days
0.32in

Visibility

How far you can see at Hartland, the next 43 hours

Visibility stays 7 miles or more through Sun 7 AM, lowest 8 miles Sat 7 AM.

FriSatSun

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

What is measuring near here

The 6 instruments nearest Hartland, 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 now4 instruments

Pewaukee WWTPPWKW3

At a water treatment plant/3.5 mi away/912 ft/10 ft below here

temp, wind, gust, humidity, pressure

Rank-

measured daily2 instruments

Hartland 0.7 NEWI-WK-145

In a volunteer observer's own ground/0.2 mi away/947 ft/25 ft above here

precip, snowfall, snow depth

Rank-

SouthONCW3

At a cooperative observer's station/8.3 mi away/866 ft/56 ft below here

snowfall, snow depth, precip, high, low

Rank173of 1,313

Station report

The weather at Waukesha Cnty, drawn

The nearest airport reporting now, 6.5 mi from Hartland, Wisconsin. From its report of Oct 16, 2026, 12:45 PM local time: 3 of its 6 sheets.

The sky

Broken at 2,200 ft, broken at 2,800 ft, broken at 3,800 ft; the ceiling is 2,200 ft; visibility 4 mi.

Section of the sky over Waukesha Cnty, height above the station to scale: broken cloud with its base at 2,200 feet, broken cloud with its base at 2,800 feet, broken cloud with its base at 3,800 feet, the ceiling at 2,200 feet, and visibility of 4 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 STATIONBKN 3,800 FTBROKEN, 5 TO 7 EIGHTHS OF THE SKYBKN 2,800 FTBROKEN, 5 TO 7 EIGHTHS OF THE SKYBKN 2,200 FTBROKEN, 5 TO 7 EIGHTHS OF THE SKYCEILING 2,200 FTVISIBILITY, MILES: 4 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

50.0 F with a dew point of 46.4 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 Waukesha Cnty: temperature 50.0 degrees Fahrenheit and dew point 46.4, 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 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 STATION01,0002,0003,00030 F40 F50 F60 FSATURATES 800 FT ABOVE THE STATION, AT 45.5 FLOWEST CLOUD REPORTED, BKN 2,200 FTTEMPERATURE 50.0 FDEW POINT 46.4 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 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 north northwest (340 degrees) at 18 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 Waukesha Cnty, north up: blowing from 340 degrees, the north northwest, at 18 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 UESFIG. C THE WIND AT WAUKESHA CNTYPLAN, NORTH UP: THE WIND AS REPORTED, AND WHERE IT SITS ON THE BEAUFORT SCALENESWTHE STATIONFROM 340°BEAUFORT FORCELEAST WIND, MPH0CALM01LIGHT AIR12LIGHT BREEZE43GENTLE BREEZE84MODERATE BREEZE13NOW, 18 MPH5FRESH BREEZE196STRONG BREEZE25GUST, 28 MPH7NEAR 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 South (ONCW3), 8.3 miles from here, read 16 Oct, 08:05. measured daily

Elsewhere in Wisconsin

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

Near Hartland

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

Near Hartland

River and lake gauges