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Clappertown, Pennsylvania

Community in Blair County, Pennsylvania

Air quality

The air at Clappertown

Index 20, good, led by ozone. Read at 7 PM from its reporting area, Altoona (PA), 10 miles off.

20Good
  • Fine particles (PM2.5)7Good10.1 mi
  • Ozone20Good16 ppb10.1 mi

The days ahead

Good each day through Wed Oct 21, led by fine particles. Yesterday measured 24, good.

Smoke, the next 44 hours

No smoke near the ground through Sun 2 PM.

FriSatSun

Precipitation

What has fallen at Clappertown

0.09 in in the last 24 hours, 0.22 in over the last 3 days, to Fri 6 PM. Measured by radar and rain gauges, as water.

Last 24 hours
0.09in
Last 3 days
0.22in

Visibility

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

Visibility stays 9 miles or more through Sun 2 PM, lowest 10 miles Fri 10 PM.

FriSatSun

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

What is measuring near here

The 7 instruments nearest Clappertown, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 1.3 miles away.

measured now5 instruments

measured daily2 instruments

Williamsburg 0.4 SEPA-BL-3

In a volunteer observer's own ground/5.3 mi away/863 ft/285 ft below here

precip, snowfall, snow depth

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Station report

The weather at Altoona/Blair Co., drawn

The nearest airport reporting now, 7.9 mi from Clappertown, Pennsylvania. From its report of Oct 16, 2026, 6:53 PM local time: 3 of its 6 sheets.

The sky

A few clouds at 2,400 ft, broken at 7,000 ft; the ceiling is 7,000 ft; visibility 10 mi or more.

Section of the sky over Altoona/Blair Co., height above the station to scale: a few clouds cloud with its base at 2,400 feet, broken cloud with its base at 7,000 feet, the ceiling at 7,000 feet, and visibility of 10 mi or more.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT AOOFIG. A THE SKY OVER ALTOONA/BLAIR CO.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 STATION02,5005,0007,50010,00012,500ETAGESLOWMIDDLETHE STATIONTHE CEILOMETER READS TO 12,000 FTBKN 7,000 FTBROKEN, 5 TO 7 EIGHTHS OF THE SKYFEW 2,400 FTA FEW CLOUDS, 1 TO 2 EIGHTHS OF THE SKYCEILING 7,000 FTVISIBILITY, MILES: 10 MI OR MORE0510TITLEAltoona/Blair Co., the skySTATION REPORT · ASOS AOOTYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 1 of 6DATE2026-10-16IDSR-AOO-1DRAWN AS linework on paperSOURCES FB-SKY-001, FB-SKY-017, FB-SKY-016, FB-SKY-018, FB-SKY-013, FB-SKY-014

The air

58.0 F with a dew point of 51.0 F, 77 per cent relative humidity. Air lifted from the station would cool to its dew point, where cloud forms, about 1,600 ft up; the lowest cloud reported is at 2,400 ft.

Chart of the air at Altoona/Blair Co.: temperature 58.0 degrees Fahrenheit and dew point 51.0, 77 per cent relative humidity; air lifted from the station cools along the dry rate and meets its dew point about 1,600 feet above the station, against the lowest cloud reported at 2,400 feet; height to scale.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT AOOFIG. B THE AIR AT ALTOONA/BLAIR CO.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 STATION01,0002,0003,00040 F50 F60 F70 FSATURATES 1,600 FT ABOVE THE STATION, AT 49.4 FLOWEST CLOUD REPORTED, FEW 2,400 FTTEMPERATURE 58.0 FDEW POINT 51.0 FSPREAD 7.0 FRELATIVE HUMIDITY 77 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 POINTTITLEAltoona/Blair Co., the airSTATION REPORT · ASOS AOOTYPECHARTSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 2 of 6DATE2026-10-16IDSR-AOO-2DRAWN AS linework on paperSOURCES FB-WAT-002, FB-ENG-011, FB-ENG-005

The wind

From the west northwest (290 degrees) at 8 mph: force 3, a gentle breeze on the Beaufort scale. The strongest gust today was 47 mph.

Plan of the wind at Altoona/Blair Co., north up: blowing from 290 degrees, the west northwest, at 8 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 AOOFIG. C THE WIND AT ALTOONA/BLAIR CO.PLAN, NORTH UP: THE WIND AS REPORTED, AND WHERE IT SITS ON THE BEAUFORT SCALENESWTHE STATIONFROM 290°BEAUFORT FORCELEAST WIND, MPH0CALM01LIGHT AIR12LIGHT BREEZE43GENTLE BREEZE8NOW, 8 MPH4MODERATE BREEZE135FRESH BREEZE196STRONG BREEZE257NEAR GALE328GALE399STRONG GALE4710STORM5511VIOLENT STORM6412HURRICANE FORCE73TITLEAltoona/Blair Co., the windSTATION REPORT · ASOS AOOTYPEPLAN north upSCALENOT TO SCALEREVAS REPORTED SHEET 3 of 6DATE2026-10-16IDSR-AOO-3DRAWN AS linework on paperSOURCES FB-EVT-150, FB-ENG-008, FB-INS-002

The full report of Altoona/Blair Co., 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 Clappertown

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

Near Clappertown

River and lake gauges