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Harlansburg, Pennsylvania

Community in Lawrence County, Pennsylvania

Air quality

The air at Harlansburg

Index 46, good, led by fine particles. Read at 3 AM from its reporting area, Mercer County (PA), 17 miles off.

46Good
  • Fine particles (PM2.5)46Good20.1 mi
  • Ozone14Good-

The days ahead

Good each day through Sun Oct 18, led by fine particles. Yesterday measured 28, good.

Smoke, the next 42 hours

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

FriSat

Precipitation

What has fallen at Harlansburg

None in the last 24 hours; 0.16 in over the last 3 days, to Fri 2 AM. Measured by radar and rain gauges, as water.

Last 24 hours
0.00in
Last 3 days
0.16in

Visibility

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

Visibility stays 4 miles or more through Sat 8 PM, lowest 5 miles Fri 4 PM.

FriSat

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

What is measuring near here

The 6 instruments nearest Harlansburg, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 3.5 miles away.

measured now4 instruments

Slippery RockSLPP1

At a river or reservoir gauge/8.7 mi away/1,224 ft/99 ft above here

temp, wind, gust, humidity, pressure

Rank-

New CastleUCP

At an airfield/11.9 mi away/1,072 ft/53 ft below here

temp, wind, gust, visibility, precip, pressure

Rank4of 1,383

measured daily2 instruments

Slippery Rock 5.6 SWPA-BT-26

In a volunteer observer's own ground/3.5 mi away/1,268 ft/143 ft above here

precip, snowfall, snow depth

Rank-

Station report

The weather at New Castle, drawn

The nearest airport reporting now, 11.9 mi from Harlansburg, Pennsylvania. From its report of Oct 16, 2026, 2:56 AM local time: 3 of its 6 sheets.

The sky

Broken at 700 ft, overcast at 1,100 ft; the ceiling is 700 ft; visibility 9 mi.

Section of the sky over New Castle, height above the station to scale: broken cloud with its base at 700 feet, overcast cloud with its base at 1,100 feet, the ceiling at 700 feet, and visibility of 9 mi.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT UCPFIG. A THE SKY OVER NEW CASTLESECTION, 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 1,100 FTOVERCAST, 8 EIGHTHS OF THE SKYBKN 700 FTBROKEN, 5 TO 7 EIGHTHS OF THE SKYCEILING 700 FTVISIBILITY, MILES: 9 MI0510TITLENew Castle, the skySTATION REPORT · ASOS UCPTYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 1 of 6DATE2026-10-16IDSR-UCP-1DRAWN AS linework on paperSOURCES FB-SKY-001, FB-SKY-017, FB-SKY-016, FB-SKY-018

The air

68.0 F with a dew point of 67.0 F, 97 per cent relative humidity. Air lifted from the station would cool to its dew point, where cloud forms, about 200 ft up; the lowest cloud reported is at 700 ft.

Chart of the air at New Castle: temperature 68.0 degrees Fahrenheit and dew point 67.0, 97 per cent relative humidity; air lifted from the station cools along the dry rate and meets its dew point about 200 feet above the station, against the lowest cloud reported at 700 feet; height to scale.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT UCPFIG. B THE AIR AT NEW CASTLETHE REPORTED TEMPERATURE AND DEW POINT, AND AIR LIFTED FROM THE STATION WITHOUT MIXING UNTIL IT SATURATES; HEIGHT ABOVE THE STATION TO SCALEFT ABOVE THE STATION01,0002,0003,00060 F70 F80 FSATURATES 200 FT ABOVE THE STATION, AT 66.8 FLOWEST CLOUD REPORTED, BKN 700 FTTEMPERATURE AND DEW POINT 68.0 F, 67.0 FRELATIVE HUMIDITY 97 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 POINTTITLENew Castle, the airSTATION REPORT · ASOS UCPTYPECHARTSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 2 of 6DATE2026-10-16IDSR-UCP-2DRAWN AS linework on paperSOURCES FB-WAT-020, FB-WAT-002, FB-ENG-011, FB-ENG-005

The wind

At 6 mph: force 2, a light breeze on the Beaufort scale.

Plan of the wind at New Castle, north up: at 6 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 UCPFIG. C THE WIND AT NEW CASTLEPLAN, NORTH UP: THE WIND AS REPORTED, AND WHERE IT SITS ON THE BEAUFORT SCALENESWTHE STATIONDIRECTION NOT REPORTEDBEAUFORT FORCELEAST WIND, MPH0CALM01LIGHT AIR12LIGHT BREEZE4NOW, 6 MPH3GENTLE BREEZE84MODERATE BREEZE135FRESH BREEZE196STRONG BREEZE257NEAR GALE328GALE399STRONG GALE4710STORM5511VIOLENT STORM6412HURRICANE FORCE73TITLENew Castle, the windSTATION REPORT · ASOS UCPTYPEPLAN north upSCALENOT TO SCALEREVAS REPORTED SHEET 3 of 6DATE2026-10-16IDSR-UCP-3DRAWN AS linework on paperSOURCES FB-EVT-150, FB-ENG-008, FB-INS-002

The full report of New Castle, 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 Harlansburg

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

Near Harlansburg

River and lake gauges