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Porter, Indiana

Town in Porter County, Indiana

Air quality

The air at Porter

Index 31, good, led by coarse particles. Read at 11 PM from its reporting area, Hammond-Gary (IN), 15 miles off.

31Good
  • Fine particles (PM2.5)17Good24.1 mi
  • Ozone26Good-
  • Coarse particles (PM10)31Good-

The days ahead

Highest moderate, Sun Oct 18, led by ozone. Yesterday measured 28, good.

Smoke, the next 45 hours

No smoke near the ground through Sun 7 PM.

SatSun

Precipitation

What has fallen at Porter

0.24 in in the last 24 hours, 0.57 in over the last 3 days, to Fri 10 PM. Measured by radar and rain gauges, as water.

Last 24 hours
0.24in
Last 3 days
0.57in

Visibility

How far you can see at Porter, the next 45 hours

Visibility stays 10 miles or more through Sun 7 PM.

SatSun

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

What is measuring near here

The 6 instruments nearest Porter, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 0.3 miles away.

measured now4 instruments

ValparaisoVPZ

At an airfield/11.9 mi away/758 ft/124 ft above here

temp, wind, gust, visibility, precip, pressure

Rank5of 1,118

measured daily2 instruments

Station report

The weather at Valparaiso, drawn

The nearest airport reporting now, 11.9 mi from Porter, Indiana. From its report of Oct 16, 2026, 10:56 PM local time: 3 of its 5 sheets.

The sky

A few clouds at 3,100 ft, broken at 4,900 ft, broken at 7,000 ft; the ceiling is 4,900 ft; visibility 10 mi or more.

Section of the sky over Valparaiso, height above the station to scale: a few clouds cloud with its base at 3,100 feet, broken cloud with its base at 4,900 feet, broken cloud with its base at 7,000 feet, the ceiling at 4,900 feet, and visibility of 10 mi or more.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 STATION02,5005,0007,50010,00012,500ETAGESLOWMIDDLETHE STATIONTHE CEILOMETER READS TO 12,000 FTBKN 7,000 FTBROKEN, 5 TO 7 EIGHTHS OF THE SKYBKN 4,900 FTBROKEN, 5 TO 7 EIGHTHS OF THE SKYFEW 3,100 FTA FEW CLOUDS, 1 TO 2 EIGHTHS OF THE SKYCEILING 4,900 FTVISIBILITY, MILES: 10 MI OR MORE0510TITLEValparaiso, the skySTATION REPORT · ASOS VPZTYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 1 of 5DATE2026-10-17IDSR-VPZ-1DRAWN AS linework on paperSOURCES FB-SKY-001, FB-SKY-017, FB-SKY-016, FB-SKY-018, FB-SKY-013, FB-SKY-014

The air

46.0 F with a dew point of 41.0 F, 83 per cent relative humidity. Air lifted from the station would cool to its dew point, where cloud forms, about 1,200 ft up; the lowest cloud reported is at 3,100 ft.

Chart of the air at Valparaiso: temperature 46.0 degrees Fahrenheit and dew point 41.0, 83 per cent relative humidity; air lifted from the station cools along the dry rate and meets its dew point about 1,200 feet above the station, against the lowest cloud reported at 3,100 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 STATION01,0002,0003,0004,00030 F40 F50 F60 FSATURATES 1,200 FT ABOVE THE STATION, AT 39.8 FLOWEST CLOUD REPORTED, FEW 3,100 FTTEMPERATURE 46.0 FDEW POINT 41.0 FSPREAD 5.0 FRELATIVE HUMIDITY 83 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 5DATE2026-10-17IDSR-VPZ-2DRAWN AS linework on paperSOURCES FB-WAT-002, FB-ENG-011, FB-ENG-005

The column

At 758 ft above sea level, 3 per cent of the atmosphere's air lies below the station. The standard atmosphere puts the pressure there at 29.11 inHg and the temperature at 56.3 F; the station's altimeter setting of 30.36 inHg means its barometer reads 29.54 inHg; it reports 46.0 F, 10.3 F colder than standard.

Section from sea level of where Valparaiso stands in the atmosphere, height to scale: the station 758 feet above sea level with 3 per cent of the air below it; the standard atmosphere's pressure there, 29.11 inches of mercury, and temperature, 56.3 degrees Fahrenheit; the altimeter setting of 30.36 and the station pressure it means, 29.54.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT VPZFIG. D WHERE VALPARAISO 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 ATMOSPHEREVALPARAISO3 PER CENT OF THE AIR BELOW IT758 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 HERE29.11 inHgSTANDARD TEMPERATURE HERE56.3 FALTIMETER SETTING, REPORTED30.36 inHgITS BAROMETER READS29.54 inHgTEMPERATURE, REPORTED46.0 FTITLEValparaiso, the columnSTATION REPORT · ASOS VPZTYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 3 of 5DATE2026-10-17IDSR-VPZ-3DRAWN AS linework on paperSOURCES FB-ENG-001, FB-ENG-003

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

0in

Snow on the ground

Measured at Indiana Dunes National Park (IDNI3), 1.1 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 Porter

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

Near Porter

River and lake gauges