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Potosi, Wisconsin

Village in Grant County, Wisconsin

Air quality

The air at Potosi

Index 13, good, led by fine particles. Read at 10 PM from its reporting area, Driftless Area South (WI), 25 miles off.

13Good
  • Fine particles (PM2.5)13Good-

The days ahead

Good each day through Sat Oct 17, led by ozone. Yesterday measured 26, good.

Smoke, the next 46 hours

No smoke near the ground through Sat 7 PM.

FriSat

Precipitation

What has fallen at Potosi

0.96 in in the last 24 hours, 1.45 in over the last 3 days, to Thu 9 PM. Measured by radar and rain gauges, as water.

Last 24 hours
0.96in
Last 3 days
1.45in

Visibility

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

Visibility stays 6 miles or more through Sat 7 PM, lowest 7 miles Fri 9 AM.

FriSat

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

What is measuring near here

The 6 instruments nearest Potosi, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 0.4 miles away.

measured now4 instruments

LancasterLKRW3

At a river or reservoir gauge/10.7 mi away/1,094 ft/168 ft above here

temp, wind, gust, humidity, pressure

Rank499of 1,313

PlattevilleS2196

At a soil climate station/16.2 mi away/1,014 ft/88 ft above here

temp, humidity, soil temp, soil moisture

Rank861of 1,313

measured daily2 instruments

Potosi 0.1 EWI-GT-7

In a volunteer observer's own ground/0.4 mi away/825 ft/101 ft below here

precip, snowfall, snow depth

Rank-

Station report

The weather at Platteville, drawn

The nearest airport reporting now, 13.0 mi from Potosi, Wisconsin. From its report of Oct 15, 2026, 10:15 PM local time: 3 of its 5 sheets.

The sky

Overcast at 1,100 ft; the ceiling is 1,100 ft; visibility 10 mi or more.

Section of the sky over Platteville, height above the station to scale: overcast cloud with its base at 1,100 feet, the ceiling at 1,100 feet, and visibility of 10 mi or more.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT PVBFIG. A THE SKY OVER PLATTEVILLESECTION, 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 1,100 FTOVERCAST, 8 EIGHTHS OF THE SKYCEILING 1,100 FTVISIBILITY, MILES: 10 MI OR MORE0510TITLEPlatteville, the skySTATION REPORT · ASOS PVBTYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 1 of 5DATE2026-10-16IDSR-PVB-1DRAWN AS linework on paperSOURCES FB-SKY-001, FB-SKY-017, FB-SKY-016, FB-SKY-018

The wind

From the west northwest (300 degrees) at 14 mph, gusting 23 mph: force 4, a moderate breeze on the Beaufort scale. The strongest gust today was 29 mph.

Plan of the wind at Platteville, north up: blowing from 300 degrees, the west northwest, at 14 miles an hour, gusting 23; beside it the Beaufort scale from calm to hurricane force, force 4, moderate breeze, marked.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT PVBFIG. C THE WIND AT PLATTEVILLEPLAN, NORTH UP: THE WIND AS REPORTED, AND WHERE IT SITS ON THE BEAUFORT SCALENESWTHE STATIONFROM 300°BEAUFORT FORCELEAST WIND, MPH0CALM01LIGHT AIR12LIGHT BREEZE43GENTLE BREEZE84MODERATE BREEZE13NOW, 14 MPH5FRESH BREEZE19GUST, 23 MPH6STRONG BREEZE257NEAR GALE328GALE399STRONG GALE4710STORM5511VIOLENT STORM6412HURRICANE FORCE73TITLEPlatteville, the windSTATION REPORT · ASOS PVBTYPEPLAN north upSCALENOT TO SCALEREVAS REPORTED SHEET 2 of 5DATE2026-10-16IDSR-PVB-2DRAWN AS linework on paperSOURCES FB-EVT-150, FB-ENG-008, FB-INS-002

The column

At 1,024 ft above sea level, 4 per cent of the atmosphere's air lies below the station. The standard atmosphere puts the pressure there at 28.83 inHg and the temperature at 55.3 F; the station's altimeter setting of 29.90 inHg means its barometer reads 28.81 inHg.

Section from sea level of where Platteville stands in the atmosphere, height to scale: the station 1,024 feet above sea level with 4 per cent of the air below it; the standard atmosphere's pressure there, 28.83 inches of mercury, and temperature, 55.3 degrees Fahrenheit; the altimeter setting of 29.90 and the station pressure it means, 28.81.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT PVBFIG. D WHERE PLATTEVILLE STANDS IN THE ATMOSPHERESECTION FROM SEA LEVEL, HEIGHT TO SCALE, THE STATION IN THE STANDARD ATMOSPHEREFT ABOVE SEA LEVEL05,00010,00015,000SEA LEVEL, 29.92 inHg IN THE STANDARD ATMOSPHEREPLATTEVILLE4 PER CENT OF THE AIR BELOW IT1,024 FT10 PER CENT OF THE AIR BELOW, 2,890 FT20 PER CENT OF THE AIR BELOW, 6,050 FT30 PER CENT OF THE AIR BELOW, 9,540 FT40 PER CENT OF THE AIR BELOW, 13,470 FTSTANDARD PRESSURE HERE28.83 inHgSTANDARD TEMPERATURE HERE55.3 FALTIMETER SETTING, REPORTED29.90 inHgITS BAROMETER READS28.81 inHgTITLEPlatteville, the columnSTATION REPORT · ASOS PVBTYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 3 of 5DATE2026-10-16IDSR-PVB-3DRAWN AS linework on paperSOURCES FB-ENG-001, FB-ENG-003

The full report of Platteville, in 5 sheets, each beside the Field Book plates that explain it

0in

Snow on the ground

Measured at Lancaster 4WSW (LANW3), 10.4 miles from here, read 15 Oct, 08:00. measured daily

Elsewhere in Wisconsin

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

Near Potosi

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

Near Potosi

River and lake gauges