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Bryn Athyn, Pennsylvania

Borough in Montgomery County, Pennsylvania

Air quality

The air at Bryn Athyn

Index 35, good, led by fine particles. Read at 12 AM from its reporting area, Philadelphia (PA), 13 miles off.

35Good
  • Fine particles (PM2.5)35Good13.2 mi
  • Ozone25Good26 ppb9.5 mi
  • Coarse particles (PM10)20Good-
  • Nitrogen dioxide5Good5 ppb14.6 mi
  • Sulfur dioxide0Good0 ppb14.6 mi
  • Carbon monoxide-0.1 ppm14.6 mi

The days ahead

Good each day through Tue Oct 20, led by fine particles. Yesterday measured 29, good.

Smoke, the next 45 hours

No smoke near the ground through Sun 8 PM.

SatSun

Precipitation

What has fallen at Bryn Athyn

0.14 in in the last 24 hours, 0.19 in over the last 3 days, to Fri 11 PM. Measured by radar and rain gauges, as water.

Last 24 hours
0.14in
Last 3 days
0.19in

Visibility

How far you can see at Bryn Athyn, the next 45 hours

Visibility stays 4 miles or more through Sun 8 PM, lowest 5 miles Sat 2 AM.

SatSun

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

What is measuring near here

The 6 instruments nearest Bryn Athyn, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 2.4 miles away.

measured now4 instruments

measured daily2 instruments

Willow GroveWGVP1

At a cooperative observer's station/3.6 mi away/312 ft/44 ft above here

snowfall, snow depth, precip, high, low

Rank101of 1,394

Station report

The weather at Philadelphia NE, drawn

The nearest airport reporting now, 4.5 mi from Bryn Athyn, Pennsylvania. From its report of Oct 16, 2026, 11:54 PM local time: 3 of its 6 sheets.

The sky

Overcast at 3,100 ft; the ceiling is 3,100 ft; visibility 10 mi or more.

Section of the sky over Philadelphia NE, height above the station to scale: overcast cloud with its base at 3,100 feet, the ceiling at 3,100 feet, and visibility of 10 mi or more.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT PNEFIG. A THE SKY OVER PHILADELPHIA NESECTION, 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 STATION01,0002,0003,0004,0005,000ETAGESLOWTHE STATIONTHE CEILOMETER READS TO 12,000 FT, ABOVE THIS SHEETOVC 3,100 FTOVERCAST, 8 EIGHTHS OF THE SKYCEILING 3,100 FTVISIBILITY, MILES: 10 MI OR MORE0510TITLEPhiladelphia NE, the skySTATION REPORT · ASOS PNETYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 1 of 6DATE2026-10-17IDSR-PNE-1DRAWN AS linework on paperSOURCES FB-SKY-001, FB-SKY-017, FB-SKY-016, FB-SKY-018

The air

63.0 F with a dew point of 60.0 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 3,100 ft.

Chart of the air at Philadelphia NE: temperature 63.0 degrees Fahrenheit and dew point 60.0, 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 3,100 feet; height to scale.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT PNEFIG. B THE AIR AT PHILADELPHIA NETHE REPORTED TEMPERATURE AND DEW POINT, AND AIR LIFTED FROM THE STATION WITHOUT MIXING UNTIL IT SATURATES; HEIGHT ABOVE THE STATION TO SCALEFT ABOVE THE STATION01,0002,0003,0004,00050 F60 F70 FSATURATES 700 FT ABOVE THE STATION, AT 59.3 FLOWEST CLOUD REPORTED, OVC 3,100 FTTEMPERATURE 63.0 FDEW POINT 60.0 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 POINTTITLEPhiladelphia NE, the airSTATION REPORT · ASOS PNETYPECHARTSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 2 of 6DATE2026-10-17IDSR-PNE-2DRAWN AS linework on paperSOURCES FB-WAT-020, FB-WAT-002, FB-ENG-011, FB-ENG-005

The wind

From the west (270 degrees) at 3 mph: force 1, a light air on the Beaufort scale. The strongest gust today was 30 mph.

Plan of the wind at Philadelphia NE, north up: blowing from 270 degrees, the west, at 3 miles an hour; beside it the Beaufort scale from calm to hurricane force, force 1, light air, marked.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT PNEFIG. C THE WIND AT PHILADELPHIA NEPLAN, NORTH UP: THE WIND AS REPORTED, AND WHERE IT SITS ON THE BEAUFORT SCALENESWTHE STATIONFROM 270°BEAUFORT FORCELEAST WIND, MPH0CALM01LIGHT AIR1NOW, 3 MPH2LIGHT BREEZE43GENTLE BREEZE84MODERATE BREEZE135FRESH BREEZE196STRONG BREEZE257NEAR GALE328GALE399STRONG GALE4710STORM5511VIOLENT STORM6412HURRICANE FORCE73TITLEPhiladelphia NE, the windSTATION REPORT · ASOS PNETYPEPLAN north upSCALENOT TO SCALEREVAS REPORTED SHEET 3 of 6DATE2026-10-17IDSR-PNE-3DRAWN AS linework on paperSOURCES FB-EVT-150, FB-ENG-008, FB-INS-002

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

0in

Snow on the ground

Measured at Willow Grove (WGVP1), 3.6 miles from here, read 16 Oct, 06:00. measured daily

Elsewhere in Pennsylvania

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

Near Bryn Athyn

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

Near Bryn Athyn

River and lake gauges