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Tomah, Wisconsin

City in Monroe County, Wisconsin

Air quality

The air at Tomah

Index 12, good, led by ozone. Read at 10 PM from its reporting area, Driftless Area North (WI), 27 miles off.

12Good
  • Fine particles (PM2.5)6Good-
  • Ozone12Good-

The days ahead

Good each day through Sat Oct 17, led by ozone. Yesterday measured 14, good.

Smoke, the next 46 hours

No smoke near the ground through Sat 7 PM.

FriSat

Precipitation

What has fallen at Tomah

0.93 in in the last 24 hours, 1.00 in over the last 3 days, to Thu 9 PM. 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 Tomah, the next 46 hours

Visibility stays 4 miles or more through Sat 7 PM, lowest 5 miles Fri 6 AM.

FriSat

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

What is measuring near here

The 7 instruments nearest Tomah, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 1.0 miles away.

measured now5 instruments

Tomah - I-94 @ USH 12TMAW3

Beside a road/2.6 mi away/991 ft/19 ft above here

temp, pavement temp, wind, visibility, precip

Rank-

measured daily2 instruments

Tomah 0.6 NEWI-MN-7

In a volunteer observer's own ground/1.0 mi away/958 ft/14 ft below here

precip, snowfall, snow depth

Rank-

Tomah Ranger Station 2TOMW3

At a fire lookout or ranger station/2.2 mi away/958 ft/14 ft below here

snowfall, snow depth, precip, high, low

Rank-

Station report

The weather at Sparta/Mccoy AAF, drawn

The nearest airport reporting now, 11.6 mi from Tomah, Wisconsin. From its report of Oct 15, 2026, 10:20 PM local time: 3 of its 6 sheets.

The sky

Overcast at 1,200 ft; the ceiling is 1,200 ft; visibility 8 mi.

Section of the sky over Sparta/Mccoy AAF, height above the station to scale: overcast cloud with its base at 1,200 feet, the ceiling at 1,200 feet, and visibility of 8 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 1,200 FTOVERCAST, 8 EIGHTHS OF THE SKYCEILING 1,200 FTVISIBILITY, MILES: 8 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

50.0 F with a dew point of 48.2 F, 93 per cent relative humidity. Air lifted from the station would cool to its dew point, where cloud forms, about 400 ft up; the lowest cloud reported is at 1,200 ft.

Chart of the air at Sparta/Mccoy AAF: temperature 50.0 degrees Fahrenheit and dew point 48.2, 93 per cent relative humidity; air lifted from the station cools along the dry rate and meets its dew point about 400 feet above the station, against the lowest cloud reported at 1,200 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 STATION01,0002,0003,00040 F50 F60 FSATURATES 400 FT ABOVE THE STATION, AT 47.8 FLOWEST CLOUD REPORTED, OVC 1,200 FTTEMPERATURE AND DEW POINT 50.0 F, 48.2 FRELATIVE HUMIDITY 93 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-020, FB-WAT-002, FB-ENG-011, FB-ENG-005

The wind

From the west northwest (300 degrees) at 12 mph: force 3, a gentle breeze on the Beaufort scale. The strongest gust today was 23 mph.

Plan of the wind at Sparta/Mccoy AAF, north up: blowing from 300 degrees, the west northwest, at 12 miles an hour; beside it the Beaufort scale from calm to hurricane force, force 3, gentle breeze, 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 STATIONFROM 300°BEAUFORT FORCELEAST WIND, MPH0CALM01LIGHT AIR12LIGHT BREEZE43GENTLE BREEZE8NOW, 12 MPH4MODERATE 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

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Snow on the ground

Elsewhere in Wisconsin

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

Near Tomah

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

Near Tomah

River and lake gauges