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Trappe, Pennsylvania

Borough in Montgomery County, Pennsylvania

Air quality

The air at Trappe

Index 24, good, led by ozone. Read at 10 PM from its reporting area, Philadelphia (PA), 25 miles off.

24Good
  • Fine particles (PM2.5)15Good10.9 mi
  • Ozone24Good24 ppb10.9 mi
  • Coarse particles (PM10)6Good-
  • Sulfur dioxide0Good0.4 ppb24.7 mi
  • Carbon monoxide-0.5 ppm20.5 mi

The days ahead

Good each day through Sun Oct 18, led by fine particles. Yesterday measured 59, moderate.

Smoke, the next 41 hours

Little smoke near the ground through Sat 2 PM: the index from smoke stays at 6 or under.

FriSat

Precipitation

What has fallen at Trappe

None in the last 3 days, to Thu 9 PM. Measured by radar and rain gauges, as water.

Last 24 hours
0.00in
Last 3 days
0.00in

Visibility

How far you can see at Trappe, the next 41 hours

Mist or haze: visibility falls to 2 miles Fri 7 PM.

FriSat

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

What is measuring near here

The 7 instruments nearest Trappe, 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 now5 instruments

Avondale 2 N03761

At a climate reference station/28.8 mi away/400 ft/146 ft above here

temp, humidity, wind, solar, precip

Rank759of 1,383

measured daily2 instruments

Trappe 0.6 NPA-MT-154

In a volunteer observer's own ground/0.4 mi away/281 ft/27 ft above here

precip, snowfall, snow depth

Rank170of 1,383

PhoenixvillePHXP1

At a cooperative observer's station/5.7 mi away/154 ft/100 ft below here

snowfall, snow depth, precip, high, low

Rank-

Station report

The weather at Pottstown Limerick Airport, drawn

The nearest airport reporting now, 5.1 mi from Trappe, Pennsylvania. From its report of Oct 15, 2026, 9:54 PM local time: 3 of its 6 sheets.

The sky

Scattered at 4,400 ft, overcast at 7,500 ft; the ceiling is 7,500 ft; visibility 10 mi or more.

Section of the sky over Pottstown Limerick Airport, height above the station to scale: scattered cloud with its base at 4,400 feet, overcast cloud with its base at 7,500 feet, the ceiling at 7,500 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 STATION02,5005,0007,50010,00012,500ETAGESLOWMIDDLETHE STATIONTHE CEILOMETER READS TO 12,000 FTOVC 7,500 FTOVERCAST, 8 EIGHTHS OF THE SKYSCT 4,400 FTSCATTERED, 3 TO 4 EIGHTHS OF THE SKYCEILING 7,500 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, FB-SKY-013, FB-SKY-014

The air

60.0 F with a dew point of 51.0 F, 72 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 4,400 ft.

Chart of the air at Pottstown Limerick Airport: temperature 60.0 degrees Fahrenheit and dew point 51.0, 72 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 4,400 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 STATION01,0002,0003,0004,0005,0006,00040 F50 F60 F70 FSATURATES 2,100 FT ABOVE THE STATION, AT 49.0 FLOWEST CLOUD REPORTED, SCT 4,400 FTTEMPERATURE 60.0 FDEW POINT 51.0 FSPREAD 9.0 FRELATIVE HUMIDITY 72 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 southeast (160 degrees) at 7 mph: force 2, a light breeze on the Beaufort scale. The strongest gust today was 26 mph.

Plan of the wind at Pottstown Limerick Airport, north up: blowing from 160 degrees, the south southeast, 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 160°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 Trappe

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

Near Trappe

River and lake gauges