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Prospect, Pennsylvania

Borough in Butler County, Pennsylvania

Air quality

The air at Prospect

Index 21, good, led by ozone. Read at 7 AM from its reporting area, Mercer County (PA), 26 miles off.

21Good
  • Fine particles (PM2.5)4Good17.5 mi
  • Ozone21Good19 ppb17.5 mi

The days ahead

Good each day through Tue Oct 20, led by fine particles. Yesterday measured 19, good.

Smoke, the next 44 hours

No smoke near the ground through Mon 2 AM.

SatSun

Precipitation

What has fallen at Prospect

0.52 in in the last 24 hours, 0.74 in over the last 3 days, to Sat 6 AM. Measured by radar and rain gauges, as water.

Last 24 hours
0.52in
Last 3 days
0.74in

Visibility

How far you can see at Prospect, the next 44 hours

Visibility stays 10 miles or more through Mon 2 AM.

SatSun

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

What is measuring near here

The 6 instruments nearest Prospect, 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

ZelienoplePJC

At an airfield/9.3 mi away/895 ft/465 ft below here

temp, wind, gust, visibility, precip, pressure

Rank756of 1,394

measured daily2 instruments

Butler 6.5 WNWPA-BT-28

In a volunteer observer's own ground/2.0 mi away/1,300 ft/60 ft below here

precip, snowfall, snow depth

Rank-

Station report

The weather at Zelienople, drawn

The nearest airport reporting now, 9.3 mi from Prospect, Pennsylvania. From its report of Oct 17, 2026, 7:15 AM local time: 3 of its 6 sheets.

The sky

Scattered at 5,000 ft; visibility 10 mi or more.

Section of the sky over Zelienople, height above the station to scale: scattered cloud with its base at 5,000 feet, and visibility of 10 mi or more.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT PJCFIG. A THE SKY OVER ZELIENOPLESECTION, 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 STATION01,0002,0003,0004,0005,0006,0007,0008,000ETAGESLOWMIDDLETHE STATIONTHE CEILOMETER READS TO 12,000 FT, ABOVE THIS SHEETSCT 5,000 FTSCATTERED, 3 TO 4 EIGHTHS OF THE SKYVISIBILITY, MILES: 10 MI OR MORE0510TITLEZelienople, the skySTATION REPORT · ASOS PJCTYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 1 of 6DATE2026-10-17IDSR-PJC-1DRAWN AS linework on paperSOURCES FB-SKY-001, FB-SKY-017, FB-SKY-016, FB-SKY-018

The air

41.0 F with a dew point of 35.6 F, 81 per cent relative humidity. Air lifted from the station would cool to its dew point, where cloud forms, about 1,200 ft up; the lowest cloud reported is at 5,000 ft.

Chart of the air at Zelienople: temperature 41.0 degrees Fahrenheit and dew point 35.6, 81 per cent relative humidity; air lifted from the station cools along the dry rate and meets its dew point about 1,200 feet above the station, against the lowest cloud reported at 5,000 feet; height to scale.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT PJCFIG. B THE AIR AT ZELIENOPLETHE REPORTED TEMPERATURE AND DEW POINT, AND AIR LIFTED FROM THE STATION WITHOUT MIXING UNTIL IT SATURATES; HEIGHT ABOVE THE STATION TO SCALEFT ABOVE THE STATION01,0002,0003,0004,0005,0006,00020 F30 F40 F50 FSATURATES 1,200 FT ABOVE THE STATION, AT 34.4 FLOWEST CLOUD REPORTED, SCT 5,000 FTTEMPERATURE 41.0 FDEW POINT 35.6 FSPREAD 5.4 FRELATIVE HUMIDITY 81 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 POINTTITLEZelienople, the airSTATION REPORT · ASOS PJCTYPECHARTSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 2 of 6DATE2026-10-17IDSR-PJC-2DRAWN AS linework on paperSOURCES FB-WAT-002, FB-ENG-011, FB-ENG-005

The wind

From the north northwest (340 degrees) at 10 mph: force 3, a gentle breeze on the Beaufort scale. The strongest gust today was 17 mph.

Plan of the wind at Zelienople, north up: blowing from 340 degrees, the north northwest, at 10 miles an hour; beside it the Beaufort scale from calm to hurricane force, force 3, gentle breeze, marked.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT PJCFIG. C THE WIND AT ZELIENOPLEPLAN, NORTH UP: THE WIND AS REPORTED, AND WHERE IT SITS ON THE BEAUFORT SCALENESWTHE STATIONFROM 340°BEAUFORT FORCELEAST WIND, MPH0CALM01LIGHT AIR12LIGHT BREEZE43GENTLE BREEZE8NOW, 10 MPH4MODERATE BREEZE135FRESH BREEZE196STRONG BREEZE257NEAR GALE328GALE399STRONG GALE4710STORM5511VIOLENT STORM6412HURRICANE FORCE73TITLEZelienople, the windSTATION REPORT · ASOS PJCTYPEPLAN north upSCALENOT TO SCALEREVAS REPORTED SHEET 3 of 6DATE2026-10-17IDSR-PJC-3DRAWN AS linework on paperSOURCES FB-EVT-150, FB-ENG-008, FB-INS-002

The full report of Zelienople, 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 Prospect

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

Near Prospect

River and lake gauges