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Slippery Rock University, Pennsylvania

Community in Butler County, Pennsylvania

Air quality

The air at Slippery Rock University

Index 25, good, led by ozone. Read at 12 PM from its reporting area, Mercer County (PA), 16 miles off.

25Good
  • Fine particles (PM2.5)3Good-
  • Ozone25Good-

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 8 AM.

SatSunMon

Precipitation

What has fallen at Slippery Rock University

0.56 in in the last 24 hours, 0.68 in over the last 3 days, to Sat 12 PM. Measured by radar and rain gauges, as water.

Last 24 hours
0.56in
Last 3 days
0.68in

Visibility

How far you can see at Slippery Rock University, the next 44 hours

Visibility stays 10 miles or more through Mon 8 AM.

SatSunMon

On the radar over Slippery Rock University, PennsylvaniaReflectivityStorm topsRain rateRain, last 24 hoursForecast temperatureForecast rain totalEvery picture

What is measuring near here

The 6 instruments nearest Slippery Rock University, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 1.1 miles away.

measured now4 instruments

Slippery RockSLPP1

At a river or reservoir gauge/3.9 mi away/1,224 ft/24 ft below here

temp, wind, gust, humidity, pressure

Rank-

ZelienoplePJC

At an airfield/19.1 mi away/895 ft/353 ft below here

temp, wind, gust, visibility, precip, pressure

Rank756of 1,394

measured daily2 instruments

Slippery Rock 1.7 SSEPA-BT-13

In a volunteer observer's own ground/1.1 mi away/1,251 ft/3 ft above here

precip, snowfall, snow depth

Rank-

Station report

The weather at Zelienople, drawn

The nearest airport reporting now, 19.1 mi from Slippery Rock University, Pennsylvania. From its report of Oct 17, 2026, 12:55 PM local time: 3 of its 6 sheets.

The sky

Scattered at 4,200 ft; visibility 10 mi or more.

Section of the sky over Zelienople, height above the station to scale: scattered cloud with its base at 4,200 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 STATION01,0002,0003,0004,0005,0006,0007,000ETAGESLOWMIDDLETHE STATIONTHE CEILOMETER READS TO 12,000 FT, ABOVE THIS SHEETSCT 4,200 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

46.4 F with a dew point of 32.0 F, 57 per cent relative humidity. Air lifted from the station would cool to its dew point, where cloud forms, about 3,300 ft up; the lowest cloud reported is at 4,200 ft.

Chart of the air at Zelienople: temperature 46.4 degrees Fahrenheit and dew point 32.0, 57 per cent relative humidity; air lifted from the station cools along the dry rate and meets its dew point about 3,300 feet above the station, against the lowest cloud reported at 4,200 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 F60 FSATURATES 3,300 FT ABOVE THE STATION, AT 29.0 FLOWEST CLOUD REPORTED, SCT 4,200 FTTEMPERATURE 46.4 FDEW POINT 32.0 FSPREAD 14.4 FRELATIVE HUMIDITY 57 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 northwest (310 degrees) at 12 mph, gusting 18 mph: force 3, a gentle breeze on the Beaufort scale. The strongest gust today was 20 mph.

Plan of the wind at Zelienople, north up: blowing from 310 degrees, the northwest, at 12 miles an hour, gusting 18; 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 310°BEAUFORT FORCELEAST WIND, MPH0CALM01LIGHT AIR12LIGHT BREEZE43GENTLE BREEZE8NOW, 12 MPH4MODERATE BREEZE13GUST, 18 MPH5FRESH 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 Slippery Rock University

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

Near Slippery Rock University

River and lake gauges