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North Wales, Pennsylvania

Borough in Montgomery County, Pennsylvania

Air quality

The air at North Wales

Index 22, good, led by fine particles. Read at 7 AM from its reporting area, Philadelphia (PA), 19 miles off.

22Good
  • Fine particles (PM2.5)22Good6.9 mi
  • Ozone17Good14 ppb6.9 mi
  • Nitrogen dioxide6Good6 ppb21.4 mi
  • Sulfur dioxide0Good0 ppb21.4 mi

The days ahead

Good each day through Sun Oct 18, led by fine particles. Yesterday measured 29, good.

Smoke, the next 43 hours

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

FriSat

Precipitation

What has fallen at North Wales

None in the last 24 hours; 0.03 in over the last 3 days, to Fri 7 AM. Measured by radar and rain gauges, as water.

Last 24 hours
0.00in
Last 3 days
0.03in

Visibility

How far you can see at North Wales, the next 43 hours

Visibility stays 3 miles or more through Sun 2 AM, lowest 4 miles Fri 7 PM.

FriSat

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

What is measuring near here

The 7 instruments nearest North Wales, 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

measured daily2 instruments

North Wales 0.4 SPA-MT-110

In a volunteer observer's own ground/0.4 mi away/398 ft/level with here

precip, snowfall, snow depth

Rank-

NorristownNRSP1

At a cooperative observer's station/7.7 mi away/62 ft/336 ft below here

snowfall, snow depth, precip, high, low

Rank944of 1,383

Station report

The weather at Philadelphia/Wings Field, drawn

The nearest airport reporting now, 5.1 mi from North Wales, Pennsylvania. From its report of Oct 16, 2026, 7:55 AM local time: 3 of its 5 sheets.

The sky

Overcast at 200 ft; the ceiling is 200 ft; visibility 1.25 mi.

Section of the sky over Philadelphia/Wings Field, height above the station to scale: overcast cloud with its base at 200 feet, the ceiling at 200 feet, and visibility of 1.25 mi.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT LOMFIG. A THE SKY OVER PHILADELPHIA/WINGS FIELDSECTION, 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 200 FTOVERCAST, 8 EIGHTHS OF THE SKYCEILING 200 FTVISIBILITY, MILES: 1.25 MI0510TITLEPhiladelphia/Wings Field, the skySTATION REPORT · ASOS LOMTYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 1 of 5DATE2026-10-16IDSR-LOM-1DRAWN AS linework on paperSOURCES FB-SKY-001, FB-SKY-017, FB-SKY-016, FB-SKY-018

The air

59.0 F with a dew point of 59.0 F, 100 per cent relative humidity. The air is saturated at the ground; the lowest cloud reported is at 200 ft.

Chart of the air at Philadelphia/Wings Field: temperature 59.0 degrees Fahrenheit and dew point 59.0, 100 per cent relative humidity; the air saturated at the ground, against the lowest cloud reported at 200 feet; height to scale.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT LOMFIG. B THE AIR AT PHILADELPHIA/WINGS FIELDTHE 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 FSATURATED AT THE GROUNDLOWEST CLOUD REPORTED, OVC 200 FTTEMPERATURE AND DEW POINT 59.0 F, 59.0 FRELATIVE HUMIDITY 100 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/Wings Field, the airSTATION REPORT · ASOS LOMTYPECHARTSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 2 of 5DATE2026-10-16IDSR-LOM-2DRAWN AS linework on paperSOURCES FB-WAT-020, FB-WAT-002, FB-ENG-011, FB-ENG-005

The column

At 302 ft above sea level, 1 per cent of the atmosphere's air lies below the station. The standard atmosphere puts the pressure there at 29.60 inHg and the temperature at 57.9 F; the station's altimeter setting of 29.95 inHg means its barometer reads 29.62 inHg; it reports 59.0 F, 1.1 F warmer than standard.

Section from sea level of where Philadelphia/Wings Field stands in the atmosphere, height to scale: the station 302 feet above sea level with 1 per cent of the air below it; the standard atmosphere's pressure there, 29.60 inches of mercury, and temperature, 57.9 degrees Fahrenheit; the altimeter setting of 29.95 and the station pressure it means, 29.62.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT LOMFIG. D WHERE PHILADELPHIA/WINGS FIELD 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 ATMOSPHEREPHILADELPHIA/WINGS FIELD1 PER CENT OF THE AIR BELOW IT302 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 HERE29.60 inHgSTANDARD TEMPERATURE HERE57.9 FALTIMETER SETTING, REPORTED29.95 inHgITS BAROMETER READS29.62 inHgTEMPERATURE, REPORTED59.0 FTITLEPhiladelphia/Wings Field, the columnSTATION REPORT · ASOS LOMTYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 3 of 5DATE2026-10-16IDSR-LOM-3DRAWN AS linework on paperSOURCES FB-ENG-001, FB-ENG-003

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

0in

Snow on the ground

Measured at Norristown (NRSP1), 7.7 miles from here, read 15 Oct, 07:00. measured daily

Elsewhere in Pennsylvania

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

Near North Wales

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

Near North Wales

River and lake gauges