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Yorklyn, Pennsylvania

Community in York County, Pennsylvania

Air quality

The air at Yorklyn

Index 30, good, led by fine particles. Read at 8 PM from its reporting area, Susquehanna Valley (PA), 4 miles off.

30Good
  • Fine particles (PM2.5)30Good3.6 mi
  • Ozone30Good29 ppb3.6 mi

The days ahead

Good each day through Tue Oct 20, led by fine particles. Yesterday measured 28, good.

Smoke, the next 42 hours

No smoke near the ground through Sun 2 PM.

SatSun

Precipitation

What has fallen at Yorklyn

0.25 in in the last 24 hours, 0.30 in over the last 3 days, to Fri 8 PM. Measured by radar and rain gauges, as water.

Last 24 hours
0.25in
Last 3 days
0.30in

Visibility

How far you can see at Yorklyn, the next 42 hours

Visibility stays 10 miles or more through Sun 2 PM.

SatSun

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

What is measuring near here

The 6 instruments nearest Yorklyn, 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 now4 instruments

measured daily2 instruments

Stonybrook-Wilshire 0.8 ENEPA-YR-6

In a volunteer observer's own ground/1.1 mi away/423 ft/2 ft below here

precip, snowfall, snow depth

Rank-

LandisvilleLDVP1

At a cooperative observer's station/14.1 mi away/367 ft/58 ft below here

snowfall, snow depth, precip, high, low

Rank-

Station report

The weather at Thomasville/York, drawn

The nearest airport reporting now, 13.2 mi from Yorklyn, Pennsylvania. From its report of Oct 16, 2026, 8:53 PM local time: 3 of its 6 sheets.

The sky

Scattered at 9,000 ft, broken at 12,000 ft; the ceiling is 12,000 ft; visibility 10 mi or more.

Section of the sky over Thomasville/York, height above the station to scale: scattered cloud with its base at 9,000 feet, broken cloud with its base at 12,000 feet, the ceiling at 12,000 feet, and visibility of 10 mi or more.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT THVFIG. A THE SKY OVER THOMASVILLE/YORKSECTION, 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 STATION02,5005,0007,50010,00012,50015,00017,50020,000ETAGESLOWMIDDLEHIGHTHE STATIONTHE CEILOMETER READS TO 12,000 FTBKN 12,000 FTBROKEN, 5 TO 7 EIGHTHS OF THE SKYSCT 9,000 FTSCATTERED, 3 TO 4 EIGHTHS OF THE SKYCEILING 12,000 FTVISIBILITY, MILES: 10 MI OR MORE0510TITLEThomasville/York, the skySTATION REPORT · ASOS THVTYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 1 of 6DATE2026-10-17IDSR-THV-1DRAWN AS linework on paperSOURCES FB-SKY-001, FB-SKY-013, FB-SKY-014

The air

62.0 F with a dew point of 53.0 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 9,000 ft.

Chart of the air at Thomasville/York: temperature 62.0 degrees Fahrenheit and dew point 53.0, 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 9,000 feet; height to scale.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT THVFIG. B THE AIR AT THOMASVILLE/YORKTHE REPORTED TEMPERATURE AND DEW POINT, AND AIR LIFTED FROM THE STATION WITHOUT MIXING UNTIL IT SATURATES; HEIGHT ABOVE THE STATION TO SCALEFT ABOVE THE STATION01,0002,0003,0004,0005,0006,0007,0008,00040 F50 F60 F70 FSATURATES 2,100 FT ABOVE THE STATION, AT 50.9 FABOVE THIS SHEET: LOWEST CLOUD REPORTED, SCT 9,000 FTTEMPERATURE 62.0 FDEW POINT 53.0 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 POINTTITLEThomasville/York, the airSTATION REPORT · ASOS THVTYPECHARTSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 2 of 6DATE2026-10-17IDSR-THV-2DRAWN AS linework on paperSOURCES FB-WAT-002, FB-ENG-011, FB-ENG-005

The wind

From the north northwest (330 degrees) at 3 mph: force 1, a light air on the Beaufort scale. The strongest gust today was 41 mph.

Plan of the wind at Thomasville/York, north up: blowing from 330 degrees, the north northwest, 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 THVFIG. C THE WIND AT THOMASVILLE/YORKPLAN, NORTH UP: THE WIND AS REPORTED, AND WHERE IT SITS ON THE BEAUFORT SCALENESWTHE STATIONFROM 330°BEAUFORT FORCELEAST WIND, MPH0CALM01LIGHT AIR1NOW, 3 MPH2LIGHT BREEZE43GENTLE BREEZE84MODERATE BREEZE135FRESH BREEZE196STRONG BREEZE257NEAR GALE328GALE399STRONG GALE4710STORM5511VIOLENT STORM6412HURRICANE FORCE73TITLEThomasville/York, the windSTATION REPORT · ASOS THVTYPEPLAN north upSCALENOT TO SCALEREVAS REPORTED SHEET 3 of 6DATE2026-10-17IDSR-THV-3DRAWN AS linework on paperSOURCES FB-EVT-150, FB-ENG-008, FB-INS-002

The full report of Thomasville/York, 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 Yorklyn

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

Near Yorklyn

River and lake gauges