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South Pottstown, Pennsylvania

Community in Chester County, Pennsylvania

Air quality

The air at South Pottstown

Index 29, good, led by fine particles. Read at 2 PM from its reporting area, Lehigh Valley (PA), 27 miles off.

29Good
  • Fine particles (PM2.5)29Good19.4 mi
  • Ozone18Good19 ppb19.4 mi

The days ahead

Good each day through Tue Oct 20, led by fine particles. Yesterday measured 31, good.

Smoke, the next 43 hours

Little smoke near the ground through Sun 8 AM: the index from smoke stays at 6 or under.

FriSatSun

Precipitation

What has fallen at South Pottstown

None in the last 24 hours; 0.01 in over the last 3 days, to Fri 1 PM. Measured by radar and rain gauges, as water.

Last 24 hours
0.00in
Last 3 days
0.01in

Visibility

How far you can see at South Pottstown, the next 43 hours

Visibility stays 3 miles or more through Sun 8 AM, lowest 3 miles Fri 6 PM.

FriSatSun

On the radar over South Pottstown, PennsylvaniaReflectivityStorm topsRain rateRain, last 24 hoursForecast temperatureForecast rain totalEvery picture

What is measuring near here

The 7 instruments nearest South Pottstown, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 0.6 miles away.

measured now5 instruments

Avondale 2 N03761

At a climate reference station/27.4 mi away/400 ft/195 ft above here

temp, humidity, wind, solar, precip

Rank759of 1,383

measured daily2 instruments

Stowe 0.0 ENEPA-MT-173

In a volunteer observer's own ground/1.8 mi away/198 ft/7 ft below here

precip, snowfall, snow depth

Rank-

Spring City 2WSWSGCP1

At a cooperative observer's station/5.7 mi away/253 ft/48 ft above here

snowfall, snow depth, precip, high, low

Rank-

Station report

The weather at Pottstown Limerick Airport, drawn

The nearest airport reporting now, 5.2 mi from South Pottstown, Pennsylvania. From its report of Oct 16, 2026, 1:54 PM local time: 3 of its 6 sheets.

The sky

Broken at 1,200 ft; the ceiling is 1,200 ft; visibility 10 mi or more.

Section of the sky over Pottstown Limerick Airport, height above the station to scale: broken cloud with its base at 1,200 feet, the ceiling at 1,200 feet, and visibility of 10 mi or more.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT PTWFIG. A THE SKY OVER POTTSTOWN LIMERICK AIRPORTSECTION, 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 SHEETBKN 1,200 FTBROKEN, 5 TO 7 EIGHTHS OF THE SKYCEILING 1,200 FTVISIBILITY, MILES: 10 MI OR MORE0510TITLEPottstown Limerick Airport, the skySTATION REPORT · ASOS PTWTYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 1 of 6DATE2026-10-16IDSR-PTW-1DRAWN AS linework on paperSOURCES FB-SKY-001, FB-SKY-017, FB-SKY-016, FB-SKY-018

The air

72.0 F with a dew point of 65.0 F, 79 per cent relative humidity. Air lifted from the station would cool to its dew point, where cloud forms, about 1,600 ft up; the lowest cloud reported is at 1,200 ft.

Chart of the air at Pottstown Limerick Airport: temperature 72.0 degrees Fahrenheit and dew point 65.0, 79 per cent relative humidity; air lifted from the station cools along the dry rate and meets its dew point about 1,600 feet above the station, against the lowest cloud reported at 1,200 feet; height to scale.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT PTWFIG. B THE AIR AT POTTSTOWN LIMERICK AIRPORTTHE 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 1,600 FT ABOVE THE STATION, AT 63.3 FLOWEST CLOUD REPORTED, BKN 1,200 FTTEMPERATURE 72.0 FDEW POINT 65.0 FSPREAD 7.0 FRELATIVE HUMIDITY 79 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 POINTTITLEPottstown Limerick Airport, the airSTATION REPORT · ASOS PTWTYPECHARTSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 2 of 6DATE2026-10-16IDSR-PTW-2DRAWN AS linework on paperSOURCES FB-WAT-002, FB-ENG-011, FB-ENG-005

The wind

From the south (180 degrees) at 7 mph: force 2, a light breeze on the Beaufort scale.

Plan of the wind at Pottstown Limerick Airport, north up: blowing from 180 degrees, the south, at 7 miles an hour; beside it the Beaufort scale from calm to hurricane force, force 2, light breeze, marked.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT PTWFIG. C THE WIND AT POTTSTOWN LIMERICK AIRPORTPLAN, NORTH UP: THE WIND AS REPORTED, AND WHERE IT SITS ON THE BEAUFORT SCALENESWTHE STATIONFROM 180°BEAUFORT FORCELEAST WIND, MPH0CALM01LIGHT AIR12LIGHT BREEZE4NOW, 7 MPH3GENTLE BREEZE84MODERATE BREEZE135FRESH BREEZE196STRONG BREEZE257NEAR GALE328GALE399STRONG GALE4710STORM5511VIOLENT STORM6412HURRICANE FORCE73TITLEPottstown Limerick Airport, the windSTATION REPORT · ASOS PTWTYPEPLAN north upSCALENOT TO SCALEREVAS REPORTED SHEET 3 of 6DATE2026-10-16IDSR-PTW-3DRAWN AS linework on paperSOURCES FB-EVT-150, FB-ENG-008, FB-INS-002

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

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Snow on the ground

Elsewhere in Pennsylvania

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

Near South Pottstown

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

Near South Pottstown

River and lake gauges