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Portage, Indiana

City in Porter County, Indiana

Air quality

The air at Portage

Index 33, good, led by fine particles. Read at 11 PM from its reporting area, Hammond-Gary (IN), 9 miles off.

33Good
  • Fine particles (PM2.5)33Good3.5 mi
  • Ozone13Good11 ppb3.5 mi
  • Coarse particles (PM10)7Good6.9 mi
  • Nitrogen dioxide3Good3.3 ppb6.9 mi
  • Sulfur dioxide0Good0.3 ppb6.9 mi

The days ahead

Good each day through Today, led by ozone. Yesterday measured 40, good.

Smoke, the next 44 hours

No smoke near the ground through Sat 7 PM.

FriSat

Precipitation

What has fallen at Portage

0.04 in in the last 24 hours, 0.10 in over the last 3 days, to Thu 11 PM. Measured by radar and rain gauges, as water.

Last 24 hours
0.04in
Last 3 days
0.10in

Visibility

How far you can see at Portage, the next 44 hours

Mist or haze: visibility falls to 2 miles Sat 2 AM.

FriSat

On the radar over Portage, IndianaReflectivityStorm topsRain rateRain, last 24 hoursForecast temperatureForecast rain totalEvery picture

What is measuring near here

The 6 instruments nearest Portage, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 0.8 miles away.

measured now4 instruments

ValparaisoVPZ

At an airfield/12.2 mi away/758 ft/125 ft above here

temp, wind, gust, visibility, precip, pressure

Rank4of 1,111

measured daily2 instruments

Portage 0.4 SSWIN-PT-188

In a volunteer observer's own ground/0.8 mi away/640 ft/7 ft above here

precip, snowfall, snow depth

Rank-

Station report

The weather at Valparaiso, drawn

The nearest airport reporting now, 12.2 mi from Portage, Indiana. From its report of Oct 15, 2026, 11:56 PM local time: 3 of its 6 sheets.

The sky

Overcast at 1,300 ft; the ceiling is 1,300 ft; visibility 8 mi.

Section of the sky over Valparaiso, height above the station to scale: overcast cloud with its base at 1,300 feet, the ceiling at 1,300 feet, and visibility of 8 mi.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT VPZFIG. A THE SKY OVER VALPARAISOSECTION, 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 1,300 FTOVERCAST, 8 EIGHTHS OF THE SKYCEILING 1,300 FTVISIBILITY, MILES: 8 MI0510TITLEValparaiso, the skySTATION REPORT · ASOS VPZTYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 1 of 6DATE2026-10-16IDSR-VPZ-1DRAWN AS linework on paperSOURCES FB-SKY-001, FB-SKY-017, FB-SKY-016, FB-SKY-018

The air

67.0 F with a dew point of 64.0 F, 90 per cent relative humidity. Air lifted from the station would cool to its dew point, where cloud forms, about 700 ft up; the lowest cloud reported is at 1,300 ft.

Chart of the air at Valparaiso: temperature 67.0 degrees Fahrenheit and dew point 64.0, 90 per cent relative humidity; air lifted from the station cools along the dry rate and meets its dew point about 700 feet above the station, against the lowest cloud reported at 1,300 feet; height to scale.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT VPZFIG. B THE AIR AT VALPARAISOTHE REPORTED TEMPERATURE AND DEW POINT, AND AIR LIFTED FROM THE STATION WITHOUT MIXING UNTIL IT SATURATES; HEIGHT ABOVE THE STATION TO SCALEFT ABOVE THE STATION01,0002,0003,00050 F60 F70 F80 FSATURATES 700 FT ABOVE THE STATION, AT 63.3 FLOWEST CLOUD REPORTED, OVC 1,300 FTTEMPERATURE 67.0 FDEW POINT 64.0 FSPREAD 3.0 FRELATIVE HUMIDITY 90 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 POINTTITLEValparaiso, the airSTATION REPORT · ASOS VPZTYPECHARTSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 2 of 6DATE2026-10-16IDSR-VPZ-2DRAWN AS linework on paperSOURCES FB-WAT-020, FB-WAT-002, FB-ENG-011, FB-ENG-005

The wind

From the west (280 degrees) at 20 mph, gusting 26 mph: force 5, a fresh breeze on the Beaufort scale. The strongest gust today was 33 mph.

Plan of the wind at Valparaiso, north up: blowing from 280 degrees, the west, at 20 miles an hour, gusting 26; beside it the Beaufort scale from calm to hurricane force, force 5, fresh breeze, marked.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT VPZFIG. C THE WIND AT VALPARAISOPLAN, NORTH UP: THE WIND AS REPORTED, AND WHERE IT SITS ON THE BEAUFORT SCALENESWTHE STATIONFROM 280°BEAUFORT FORCELEAST WIND, MPH0CALM01LIGHT AIR12LIGHT BREEZE43GENTLE BREEZE84MODERATE BREEZE135FRESH BREEZE19NOW, 20 MPH6STRONG BREEZE25GUST, 26 MPH7NEAR GALE328GALE399STRONG GALE4710STORM5511VIOLENT STORM6412HURRICANE FORCE73TITLEValparaiso, the windSTATION REPORT · ASOS VPZTYPEPLAN north upSCALENOT TO SCALEREVAS REPORTED SHEET 3 of 6DATE2026-10-16IDSR-VPZ-3DRAWN AS linework on paperSOURCES FB-EVT-150, FB-ENG-008, FB-INS-002

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

0in

Snow on the ground

Measured at Indiana Dunes National Park (IDNI3), 6.6 miles from here, read 15 Oct, 08:00. measured daily

Elsewhere in Indiana

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

Near Portage

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

Near Portage

River and lake gauges