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Duncansville, Pennsylvania

Borough in Blair County, Pennsylvania

Air quality

The air at Duncansville

Index 21, good, led by ozone. Read at 9 PM from its reporting area, Altoona (PA), 6 miles off.

21Good
  • Fine particles (PM2.5)8Good6.3 mi
  • Ozone21Good21 ppb6.3 mi

The days ahead

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

Smoke, the next 42 hours

No smoke near the ground through Sun 2 PM.

SatSun

Precipitation

What has fallen at Duncansville

0.17 in in the last 24 hours, 0.22 in over the last 3 days, to Fri 8 PM. Measured by radar and rain gauges, as water.

Last 24 hours
0.17in
Last 3 days
0.22in

Visibility

How far you can see at Duncansville, the next 42 hours

Visibility stays 7 miles or more through Sun 2 PM, lowest 7 miles Fri 10 PM.

SatSun

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

What is measuring near here

The 7 instruments nearest Duncansville, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 1.2 miles away.

measured now5 instruments

measured daily2 instruments

Hollidaysburg 1.9 NPA-BL-16

In a volunteer observer's own ground/2.9 mi away/1,032 ft/22 ft above here

precip, snowfall, snow depth

Rank-

Altoona 3SWALTP1

At a cooperative observer's station/5.1 mi away/1,369 ft/359 ft above here

snowfall, snow depth, precip, high, low

Rank-

Station report

The weather at Altoona/Blair Co., drawn

The nearest airport reporting now, 10.7 mi from Duncansville, Pennsylvania. From its report of Oct 16, 2026, 9:12 PM local time: 3 of its 6 sheets.

The sky

Scattered at 2,500 ft, overcast at 3,600 ft; the ceiling is 3,600 ft; visibility 10 mi or more.

Section of the sky over Altoona/Blair Co., height above the station to scale: scattered cloud with its base at 2,500 feet, overcast cloud with its base at 3,600 feet, the ceiling at 3,600 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 STATION01,0002,0003,0004,0005,0006,000ETAGESLOWTHE STATIONTHE CEILOMETER READS TO 12,000 FT, ABOVE THIS SHEETOVC 3,600 FTOVERCAST, 8 EIGHTHS OF THE SKYSCT 2,500 FTSCATTERED, 3 TO 4 EIGHTHS OF THE SKYCEILING 3,600 FTVISIBILITY, MILES: 10 MI OR MORE0510TITLEAltoona/Blair Co., the skySTATION REPORT · ASOS AOOTYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 1 of 6DATE2026-10-17IDSR-AOO-1DRAWN AS linework on paperSOURCES FB-SKY-001, FB-SKY-017, FB-SKY-016, FB-SKY-018

The air

56.0 F with a dew point of 47.0 F, 72 per cent relative humidity. Air lifted from the station would cool to its dew point, where cloud forms, about 2,100 ft up; the lowest cloud reported is at 2,500 ft.

Chart of the air at Altoona/Blair Co.: temperature 56.0 degrees Fahrenheit and dew point 47.0, 72 per cent relative humidity; air lifted from the station cools along the dry rate and meets its dew point about 2,100 feet above the station, against the lowest cloud reported at 2,500 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 STATION01,0002,0003,0004,00030 F40 F50 F60 F70 FSATURATES 2,100 FT ABOVE THE STATION, AT 45.0 FLOWEST CLOUD REPORTED, SCT 2,500 FTTEMPERATURE 56.0 FDEW POINT 47.0 FSPREAD 9.0 FRELATIVE HUMIDITY 72 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 6DATE2026-10-17IDSR-AOO-2DRAWN AS linework on paperSOURCES FB-WAT-002, FB-ENG-011, FB-ENG-005

The wind

From the northwest (310 degrees) at 14 mph, gusting 29 mph: force 4, a moderate breeze on the Beaufort scale. The strongest gust today was 47 mph.

Plan of the wind at Altoona/Blair Co., north up: blowing from 310 degrees, the northwest, at 14 miles an hour, gusting 29; beside it the Beaufort scale from calm to hurricane force, force 4, moderate 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 310°BEAUFORT FORCELEAST WIND, MPH0CALM01LIGHT AIR12LIGHT BREEZE43GENTLE BREEZE84MODERATE BREEZE13NOW, 14 MPH5FRESH BREEZE196STRONG BREEZE25GUST, 29 MPH7NEAR GALE328GALE399STRONG GALE4710STORM5511VIOLENT STORM6412HURRICANE FORCE73TITLEAltoona/Blair Co., the windSTATION REPORT · ASOS AOOTYPEPLAN north upSCALENOT TO SCALEREVAS REPORTED SHEET 3 of 6DATE2026-10-17IDSR-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

0in

Snow on the ground

Measured at Altoona 3SW (ALTP1), 5.1 miles from here, read 7 Oct, 23:59. measured daily

Elsewhere in Pennsylvania

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

Near Duncansville

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

Near Duncansville

River and lake gauges