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Sparta, Wisconsin

City in Monroe County, Wisconsin

Air quality

The air at Sparta

Index 19, good, led by fine particles. Read at 4 AM from its reporting area, Driftless Area North (WI), 15 miles off.

19Good
  • Fine particles (PM2.5)19Good-
  • Ozone18Good-

The days ahead

Good each day through Sat Oct 17, led by ozone. Yesterday measured 16, good.

Smoke, the next 46 hours

No smoke near the ground through Sun 1 AM.

FriSat

Precipitation

What has fallen at Sparta

0.93 in in the last 24 hours, 1.00 in over the last 3 days, to Fri 3 AM. Measured by radar and rain gauges, as water.

Last 24 hours
0.93in
Last 3 days
1.00in

Visibility

How far you can see at Sparta, the next 46 hours

Visibility stays 6 miles or more through Sun 1 AM, lowest 7 miles Fri 9 AM.

FriSat

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

What is measuring near here

The 7 instruments nearest Sparta, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 0.7 miles away.

measured now5 instruments

measured daily2 instruments

Sparta 1.0 WNWWI-MN-11

In a volunteer observer's own ground/0.7 mi away/898 ft/109 ft above here

precip, snowfall, snow depth

Rank-

Caston 3NNWCTNW3

At a cooperative observer's station/10.9 mi away/950 ft/161 ft above here

snowfall, snow depth, precip, high, low

Rank878of 1,313

Station report

The weather at Sparta/Mccoy AAF, drawn

The nearest airport reporting now, 4.0 mi from Sparta, Wisconsin. From its report of Oct 16, 2026, 3:55 AM local time: 3 of its 6 sheets.

The sky

Overcast at 1,400 ft; the ceiling is 1,400 ft; visibility 9 mi.

Section of the sky over Sparta/Mccoy AAF, height above the station to scale: overcast cloud with its base at 1,400 feet, the ceiling at 1,400 feet, and visibility of 9 mi.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT CMYFIG. A THE SKY OVER SPARTA/MCCOY AAFSECTION, 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 1,400 FTOVERCAST, 8 EIGHTHS OF THE SKYCEILING 1,400 FTVISIBILITY, MILES: 9 MI0510TITLESparta/Mccoy AAF, the skySTATION REPORT · ASOS CMYTYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 1 of 6DATE2026-10-16IDSR-CMY-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 44.0 F, 85 per cent relative humidity. Air lifted from the station would cool to its dew point, where cloud forms, about 1,000 ft up; the lowest cloud reported is at 1,400 ft.

Chart of the air at Sparta/Mccoy AAF: temperature 48.2 degrees Fahrenheit and dew point 44.0, 85 per cent relative humidity; air lifted from the station cools along the dry rate and meets its dew point about 1,000 feet above the station, against the lowest cloud reported at 1,400 feet; height to scale.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT CMYFIG. B THE AIR AT SPARTA/MCCOY AAFTHE 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 1,000 FT ABOVE THE STATION, AT 43.0 FLOWEST CLOUD REPORTED, OVC 1,400 FTTEMPERATURE 48.2 FDEW POINT 44.0 FSPREAD 4.2 FRELATIVE HUMIDITY 85 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 POINTTITLESparta/Mccoy AAF, the airSTATION REPORT · ASOS CMYTYPECHARTSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 2 of 6DATE2026-10-16IDSR-CMY-2DRAWN AS linework on paperSOURCES FB-WAT-002, FB-ENG-011, FB-ENG-005

The wind

Calm.

Plan of the wind at Sparta/Mccoy AAF, north up: calm; beside it the Beaufort scale from calm to hurricane force, force 0, calm, marked.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT CMYFIG. C THE WIND AT SPARTA/MCCOY AAFPLAN, NORTH UP: THE WIND AS REPORTED, AND WHERE IT SITS ON THE BEAUFORT SCALENESWTHE STATIONCALMBEAUFORT FORCELEAST WIND, MPH0CALM0NOW, 0 MPH1LIGHT AIR12LIGHT BREEZE43GENTLE BREEZE84MODERATE BREEZE135FRESH BREEZE196STRONG BREEZE257NEAR GALE328GALE399STRONG GALE4710STORM5511VIOLENT STORM6412HURRICANE FORCE73TITLESparta/Mccoy AAF, the windSTATION REPORT · ASOS CMYTYPEPLAN north upSCALENOT TO SCALEREVAS REPORTED SHEET 3 of 6DATE2026-10-16IDSR-CMY-3DRAWN AS linework on paperSOURCES FB-EVT-150, FB-ENG-008, FB-INS-002

The full report of Sparta/Mccoy AAF, in 6 sheets, each beside the Field Book plates that explain it

0in

Snow on the ground

Measured at Caston 3NNW (CTNW3), 10.9 miles from here, read 15 Oct, 07:57. measured daily

Elsewhere in Wisconsin

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

Near Sparta

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

Near Sparta

River and lake gauges