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St. Petersburg, Pennsylvania

Borough in Clarion County, Pennsylvania

Air quality

The air at St. Petersburg

Index 45, good, led by fine particles. Read at 2 AM from its reporting area, Mercer County (PA), 29 miles off.

45Good
  • Fine particles (PM2.5)45Good24.3 mi
  • Ozone14Good11 ppb24.3 mi

The days ahead

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

Smoke, the next 43 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 St. Petersburg

None in the last 24 hours; 0.07 in over the last 3 days, to Fri 1 AM. Measured by radar and rain gauges, as water.

Last 24 hours
0.00in
Last 3 days
0.07in

Visibility

How far you can see at St. Petersburg, the next 43 hours

Mist or haze: visibility falls to 2 miles Fri 2 PM.

FriSat

On the radar over St. Petersburg, PennsylvaniaReflectivityStorm topsRain rateRain, last 24 hoursForecast temperatureForecast rain totalEvery picture

What is measuring near here

The 6 instruments nearest St. Petersburg, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 0.2 miles away.

measured now4 instruments

measured daily2 instruments

St. Petersburg 0.1 WSWPA-CL-12

In a volunteer observer's own ground/0.2 mi away/1,393 ft/49 ft above here

precip, snowfall, snow depth

Rank-

Piney LakeCLAP1

At a cooperative observer's station/11.6 mi away/1,132 ft/212 ft below here

snowfall, snow depth, precip, high, low

Rank938of 1,383

Station report

The weather at Franklin(AWOS), drawn

The nearest airport reporting now, 18.4 mi from St. Petersburg, Pennsylvania. From its report of Oct 16, 2026, 2:44 AM local time: 3 of its 6 sheets.

The sky

Overcast at 300 ft; the ceiling is 300 ft; visibility 3 mi.

Section of the sky over Franklin(AWOS), height above the station to scale: overcast cloud with its base at 300 feet, the ceiling at 300 feet, and visibility of 3 mi.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT FKLFIG. A THE SKY OVER FRANKLIN(AWOS)SECTION, 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 300 FTOVERCAST, 8 EIGHTHS OF THE SKYCEILING 300 FTVISIBILITY, MILES: 3 MI0510TITLEFranklin(AWOS), the skySTATION REPORT · ASOS FKLTYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 1 of 6DATE2026-10-16IDSR-FKL-1DRAWN AS linework on paperSOURCES FB-SKY-001, FB-SKY-017, FB-SKY-016, FB-SKY-018

The air

64.4 F with a dew point of 64.4 F, 100 per cent relative humidity. The air is saturated at the ground; the lowest cloud reported is at 300 ft.

Chart of the air at Franklin(AWOS): temperature 64.4 degrees Fahrenheit and dew point 64.4, 100 per cent relative humidity; the air saturated at the ground, against the lowest cloud reported at 300 feet; height to scale.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT FKLFIG. B THE AIR AT FRANKLIN(AWOS)THE 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 FSATURATED AT THE GROUNDLOWEST CLOUD REPORTED, OVC 300 FTTEMPERATURE AND DEW POINT 64.4 F, 64.4 FRELATIVE HUMIDITY 100 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 POINTTITLEFranklin(AWOS), the airSTATION REPORT · ASOS FKLTYPECHARTSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 2 of 6DATE2026-10-16IDSR-FKL-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 9 mph: force 3, a gentle breeze on the Beaufort scale. The strongest gust today was 21 mph.

Plan of the wind at Franklin(AWOS), north up: blowing from 200 degrees, the south southwest, at 9 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 FKLFIG. C THE WIND AT FRANKLIN(AWOS)PLAN, NORTH UP: THE WIND AS REPORTED, AND WHERE IT SITS ON THE BEAUFORT SCALENESWTHE STATIONFROM 200°BEAUFORT FORCELEAST WIND, MPH0CALM01LIGHT AIR12LIGHT BREEZE43GENTLE BREEZE8NOW, 9 MPH4MODERATE BREEZE135FRESH BREEZE196STRONG BREEZE257NEAR GALE328GALE399STRONG GALE4710STORM5511VIOLENT STORM6412HURRICANE FORCE73TITLEFranklin(AWOS), the windSTATION REPORT · ASOS FKLTYPEPLAN north upSCALENOT TO SCALEREVAS REPORTED SHEET 3 of 6DATE2026-10-16IDSR-FKL-3DRAWN AS linework on paperSOURCES FB-EVT-150, FB-ENG-008, FB-INS-002

The full report of Franklin(AWOS), in 6 sheets, each beside the Field Book plates that explain it

0in

Snow on the ground

Measured at Piney Lake (CLAP1), 11.6 miles from here, read 14 Oct, 07:00. measured daily

Elsewhere in Pennsylvania

24 places, each with its own forecast and its own instruments.

Near St. Petersburg

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

Near St. Petersburg

River and lake gauges