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Donegal, Pennsylvania

Borough in Westmoreland County, Pennsylvania

Air quality

The air at Donegal

Index 20, good, led by fine particles. Read at 1 AM from its reporting area, Johnstown (PA), 28 miles off.

20Good
  • Fine particles (PM2.5)20Good15 mi
  • Ozone11Good14 ppb15 mi

The days ahead

Good each day through Sun Oct 18, led by fine particles. Yesterday measured 27, good.

Smoke, the next 43 hours

Little smoke near the ground through Sat 8 PM: the index from smoke stays at 11 or under.

FriSat

Precipitation

What has fallen at Donegal

0.05 in in the last 24 hours, 0.22 in over the last 3 days, to Fri 1 AM. Measured by radar and rain gauges, as water.

Last 24 hours
0.05in
Last 3 days
0.22in

Visibility

How far you can see at Donegal, the next 43 hours

Mist or haze: visibility falls to 1 miles Fri 4 AM.

FriSat

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

What is measuring near here

The 6 instruments nearest Donegal, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 2.0 miles away.

measured now4 instruments

Quarry TrailQTRP1

At a river or reservoir gauge/8.9 mi away/2,749 ft/911 ft above here

temp, wind, gust, humidity, pressure

Rank339of 1,383

measured daily2 instruments

Donegal 2 NwACEP1

At a cooperative observer's station/2.0 mi away/1,772 ft/66 ft below here

snowfall, snow depth, precip, high, low

Rank1,128of 1,383

Station report

The weather at Latrobe/Westmorland, drawn

The nearest airport reporting now, 11.3 mi from Donegal, Pennsylvania. From its report of Oct 16, 2026, 12:55 AM local time: 3 of its 6 sheets.

The sky

Overcast at 1,200 ft; the ceiling is 1,200 ft; visibility 10 mi or more.

Section of the sky over Latrobe/Westmorland, height above the station to scale: overcast cloud with its base at 1,200 feet, the ceiling at 1,200 feet, and visibility of 10 mi or more.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT LBEFIG. A THE SKY OVER LATROBE/WESTMORLANDSECTION, 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 1,200 FTOVERCAST, 8 EIGHTHS OF THE SKYCEILING 1,200 FTVISIBILITY, MILES: 10 MI OR MORE0510TITLELatrobe/Westmorland, the skySTATION REPORT · ASOS LBETYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 1 of 6DATE2026-10-16IDSR-LBE-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 64.4 F, 88 per cent relative humidity. Air lifted from the station would cool to its dew point, where cloud forms, about 800 ft up; the lowest cloud reported is at 1,200 ft.

Chart of the air at Latrobe/Westmorland: temperature 68.0 degrees Fahrenheit and dew point 64.4, 88 per cent relative humidity; air lifted from the station cools along the dry rate and meets its dew point about 800 feet above the station, against the lowest cloud reported at 1,200 feet; height to scale.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT LBEFIG. B THE AIR AT LATROBE/WESTMORLANDTHE 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 F80 FSATURATES 800 FT ABOVE THE STATION, AT 63.5 FLOWEST CLOUD REPORTED, OVC 1,200 FTTEMPERATURE 68.0 FDEW POINT 64.4 FSPREAD 3.6 FRELATIVE HUMIDITY 88 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 POINTTITLELatrobe/Westmorland, the airSTATION REPORT · ASOS LBETYPECHARTSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 2 of 6DATE2026-10-16IDSR-LBE-2DRAWN AS linework on paperSOURCES FB-WAT-020, FB-WAT-002, FB-ENG-011, FB-ENG-005

The wind

From the south southwest (200 degrees) at 3 mph: force 1, a light air on the Beaufort scale.

Plan of the wind at Latrobe/Westmorland, north up: blowing from 200 degrees, the south southwest, 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 LBEFIG. C THE WIND AT LATROBE/WESTMORLANDPLAN, NORTH UP: THE WIND AS REPORTED, AND WHERE IT SITS ON THE BEAUFORT SCALENESWTHE STATIONFROM 200°BEAUFORT FORCELEAST WIND, MPH0CALM01LIGHT AIR1NOW, 3 MPH2LIGHT BREEZE43GENTLE BREEZE84MODERATE BREEZE135FRESH BREEZE196STRONG BREEZE257NEAR GALE328GALE399STRONG GALE4710STORM5511VIOLENT STORM6412HURRICANE FORCE73TITLELatrobe/Westmorland, the windSTATION REPORT · ASOS LBETYPEPLAN north upSCALENOT TO SCALEREVAS REPORTED SHEET 3 of 6DATE2026-10-16IDSR-LBE-3DRAWN AS linework on paperSOURCES FB-EVT-150, FB-ENG-008, FB-INS-002

The full report of Latrobe/Westmorland, in 6 sheets, each beside the Field Book plates that explain it

0in

Snow on the ground

Measured at Donegal 2 Nw (ACEP1), 2.0 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 Donegal

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

Near Donegal

River and lake gauges