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Darien, Wisconsin

Village in Walworth County, Wisconsin

Air quality

The air at Darien

Index 5, good, led by fine particles. Read at 11 AM from its reporting area, Kettle Moraine South (WI), 15 miles off.

5Good
  • Fine particles (PM2.5)5Good-
  • Ozone-17 ppb24.8 mi
  • Coarse particles (PM10)2Good-

The days ahead

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

Smoke, the next 45 hours

No smoke near the ground through Sun 7 AM.

FriSatSun

Precipitation

What has fallen at Darien

0.40 in in the last 24 hours, 0.87 in over the last 3 days, to Fri 10 AM. Measured by radar and rain gauges, as water.

Last 24 hours
0.40in
Last 3 days
0.87in

Visibility

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

Visibility stays 8 miles or more through Sun 7 AM, lowest 8 miles Sat 6 AM.

FriSatSun

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

What is measuring near here

The 6 instruments nearest Darien, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 3.1 miles away.

measured now4 instruments

JanesvilleJANW3

At a river or reservoir gauge/16.0 mi away/876 ft/73 ft below here

temp, wind, gust, humidity, pressure

Rank716of 1,313

measured daily2 instruments

Delavan 2.2 SWI-WW-34

In a volunteer observer's own ground/3.5 mi away/992 ft/43 ft above here

precip, snowfall, snow depth

Rank-

Station report

The weather at Janesville/Rock, drawn

The nearest airport reporting now, 17.1 mi from Darien, Wisconsin. From its report of Oct 16, 2026, 10:45 AM local time: 3 of its 6 sheets.

The sky

Scattered at 1,900 ft, broken at 2,700 ft, overcast at 3,700 ft; the ceiling is 2,700 ft; visibility 10 mi or more.

Section of the sky over Janesville/Rock, height above the station to scale: scattered cloud with its base at 1,900 feet, broken cloud with its base at 2,700 feet, overcast cloud with its base at 3,700 feet, the ceiling at 2,700 feet, and visibility of 10 mi or more.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT JVLFIG. A THE SKY OVER JANESVILLE/ROCKSECTION, 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 3,700 FTOVERCAST, 8 EIGHTHS OF THE SKYBKN 2,700 FTBROKEN, 5 TO 7 EIGHTHS OF THE SKYSCT 1,900 FTSCATTERED, 3 TO 4 EIGHTHS OF THE SKYCEILING 2,700 FTVISIBILITY, MILES: 10 MI OR MORE0510TITLEJanesville/Rock, the skySTATION REPORT · ASOS JVLTYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 1 of 6DATE2026-10-16IDSR-JVL-1DRAWN AS linework on paperSOURCES FB-SKY-001, FB-SKY-017, FB-SKY-016, FB-SKY-018

The air

51.8 F with a dew point of 44.6 F, 76 per cent relative humidity. Air lifted from the station would cool to its dew point, where cloud forms, about 1,700 ft up; the lowest cloud reported is at 1,900 ft.

Chart of the air at Janesville/Rock: temperature 51.8 degrees Fahrenheit and dew point 44.6, 76 per cent relative humidity; air lifted from the station cools along the dry rate and meets its dew point about 1,700 feet above the station, against the lowest cloud reported at 1,900 feet; height to scale.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT JVLFIG. B THE AIR AT JANESVILLE/ROCKTHE 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 1,700 FT ABOVE THE STATION, AT 43.0 FLOWEST CLOUD REPORTED, SCT 1,900 FTTEMPERATURE 51.8 FDEW POINT 44.6 FSPREAD 7.2 FRELATIVE HUMIDITY 76 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 POINTTITLEJanesville/Rock, the airSTATION REPORT · ASOS JVLTYPECHARTSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 2 of 6DATE2026-10-16IDSR-JVL-2DRAWN AS linework on paperSOURCES FB-WAT-002, FB-ENG-011, FB-ENG-005

The wind

From the north northwest (330 degrees) at 16 mph, gusting 22 mph: force 4, a moderate breeze on the Beaufort scale. The strongest gust today was 26 mph.

Plan of the wind at Janesville/Rock, north up: blowing from 330 degrees, the north northwest, at 16 miles an hour, gusting 22; beside it the Beaufort scale from calm to hurricane force, force 4, moderate breeze, marked.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT JVLFIG. C THE WIND AT JANESVILLE/ROCKPLAN, NORTH UP: THE WIND AS REPORTED, AND WHERE IT SITS ON THE BEAUFORT SCALENESWTHE STATIONFROM 330°BEAUFORT FORCELEAST WIND, MPH0CALM01LIGHT AIR12LIGHT BREEZE43GENTLE BREEZE84MODERATE BREEZE13NOW, 16 MPH5FRESH BREEZE19GUST, 22 MPH6STRONG BREEZE257NEAR GALE328GALE399STRONG GALE4710STORM5511VIOLENT STORM6412HURRICANE FORCE73TITLEJanesville/Rock, the windSTATION REPORT · ASOS JVLTYPEPLAN north upSCALENOT TO SCALEREVAS REPORTED SHEET 3 of 6DATE2026-10-16IDSR-JVL-3DRAWN AS linework on paperSOURCES FB-EVT-150, FB-ENG-008, FB-INS-002

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

0in

Snow on the ground

Measured at Delavan-1 W-WWTP (DLNW3), 3.1 miles from here, read 16 Oct, 09:46. measured daily

Elsewhere in Wisconsin

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

Near Darien

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

Near Darien

River and lake gauges