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Merrimac, Wisconsin

Village in Sauk County, Wisconsin

Air quality

The air at Merrimac

Index 8, good, led by fine particles. Read at 2 PM from its reporting area, Madison Area (WI), 23 miles off.

8Good
  • Fine particles (PM2.5)8Good5.2 mi
  • Coarse particles (PM10)4Good5.2 mi

The days ahead

Good each day through Sat Oct 17, led by ozone. Yesterday measured 13, good.

Smoke, the next 42 hours

No smoke near the ground through Sun 7 AM.

FriSatSun

Precipitation

What has fallen at Merrimac

0.64 in in the last 24 hours, 1.05 in over the last 3 days, to Fri 1 PM. Measured by radar and rain gauges, as water.

Last 24 hours
0.64in
Last 3 days
1.05in

Visibility

How far you can see at Merrimac, the next 42 hours

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

FriSatSun

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

What is measuring near here

The 6 instruments nearest Merrimac, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 2.2 miles away.

measured now4 instruments

Citizen station EW0200EW0200

In a volunteer observer's own ground/2.2 mi away/871 ft/49 ft above here

temp, humidity, wind, precip, pressure

Rank-

Devils Lake Near Baraboo05404500

At a river or reservoir gauge/6.3 mi away/955 ft/133 ft above here

temp, wind, gust, humidity, pressure

Rank-

Dells/BarabooDLL

At an airfield/12.6 mi away/978 ft/156 ft above here

temp, wind, gust, visibility, precip, pressure

Rank-

measured daily2 instruments

Merrimac 5.8 NNEWI-CB-19

In a volunteer observer's own ground/5.8 mi away/1,186 ft/364 ft above here

precip, snowfall, snow depth

Rank-

Spring Creek AT LodiLODW3

At a cooperative observer's station/6.0 mi away/820 ft/2 ft below here

snowfall, snow depth, precip, high, low

Rank-

Station report

The weather at Dells/Baraboo, drawn

The nearest airport reporting now, 12.6 mi from Merrimac, Wisconsin. From its report of Oct 16, 2026, 2:35 PM local time: 3 of its 6 sheets.

The sky

Scattered at 3,200 ft, scattered at 4,000 ft, scattered at 5,000 ft; visibility 10 mi or more.

Section of the sky over Dells/Baraboo, height above the station to scale: scattered cloud with its base at 3,200 feet, scattered cloud with its base at 4,000 feet, scattered cloud with its base at 5,000 feet, and visibility of 10 mi or more.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT DLLFIG. A THE SKY OVER DELLS/BARABOOSECTION, 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 STATION01,0002,0003,0004,0005,0006,0007,0008,000ETAGESLOWMIDDLETHE STATIONTHE CEILOMETER READS TO 12,000 FT, ABOVE THIS SHEETSCT 5,000 FTSCATTERED, 3 TO 4 EIGHTHS OF THE SKYSCT 4,000 FTSCATTERED, 3 TO 4 EIGHTHS OF THE SKYSCT 3,200 FTSCATTERED, 3 TO 4 EIGHTHS OF THE SKYVISIBILITY, MILES: 10 MI OR MORE0510TITLEDells/Baraboo, the skySTATION REPORT · ASOS DLLTYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 1 of 6DATE2026-10-16IDSR-DLL-1DRAWN AS linework on paperSOURCES FB-SKY-001, FB-SKY-017, FB-SKY-016, FB-SKY-018

The air

49.0 F with a dew point of 40.0 F, 71 per cent relative humidity. Air lifted from the station would cool to its dew point, where cloud forms, about 2,100 ft up; the lowest cloud reported is at 3,200 ft.

Chart of the air at Dells/Baraboo: temperature 49.0 degrees Fahrenheit and dew point 40.0, 71 per cent relative humidity; air lifted from the station cools along the dry rate and meets its dew point about 2,100 feet above the station, against the lowest cloud reported at 3,200 feet; height to scale.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT DLLFIG. B THE AIR AT DELLS/BARABOOTHE REPORTED TEMPERATURE AND DEW POINT, AND AIR LIFTED FROM THE STATION WITHOUT MIXING UNTIL IT SATURATES; HEIGHT ABOVE THE STATION TO SCALEFT ABOVE THE STATION01,0002,0003,0004,00030 F40 F50 F60 FSATURATES 2,100 FT ABOVE THE STATION, AT 38.0 FLOWEST CLOUD REPORTED, SCT 3,200 FTTEMPERATURE 49.0 FDEW POINT 40.0 FSPREAD 9.0 FRELATIVE HUMIDITY 71 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 POINTTITLEDells/Baraboo, the airSTATION REPORT · ASOS DLLTYPECHARTSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 2 of 6DATE2026-10-16IDSR-DLL-2DRAWN AS linework on paperSOURCES FB-WAT-002, FB-ENG-011, FB-ENG-005

The wind

From the north northwest (330 degrees) at 13 mph, gusting 23 mph: force 4, a moderate breeze on the Beaufort scale. The strongest gust today was 26 mph.

Plan of the wind at Dells/Baraboo, north up: blowing from 330 degrees, the north northwest, at 13 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 DLLFIG. C THE WIND AT DELLS/BARABOOPLAN, NORTH UP: THE WIND AS REPORTED, AND WHERE IT SITS ON THE BEAUFORT SCALENESWTHE STATIONFROM 330°BEAUFORT FORCELEAST WIND, MPH0CALM01LIGHT AIR12LIGHT BREEZE43GENTLE BREEZE84MODERATE BREEZE13NOW, 13 MPH5FRESH BREEZE19GUST, 23 MPH6STRONG BREEZE257NEAR GALE328GALE399STRONG GALE4710STORM5511VIOLENT STORM6412HURRICANE FORCE73TITLEDells/Baraboo, the windSTATION REPORT · ASOS DLLTYPEPLAN north upSCALENOT TO SCALEREVAS REPORTED SHEET 3 of 6DATE2026-10-16IDSR-DLL-3DRAWN AS linework on paperSOURCES FB-EVT-150, FB-ENG-008, FB-INS-002

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

0in

Snow on the ground

Measured at Spring Creek AT Lodi (LODW3), 6.0 miles from here, read 16 Oct, 06:00. measured daily

Elsewhere in Wisconsin

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

Near Merrimac

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

Near Merrimac

River and lake gauges