Storm Station
Sign in

Martinsburg Junction, Pennsylvania

Community in Blair County, Pennsylvania

Air quality

The air at Martinsburg Junction

Index 28, good, led by fine particles. Read at 2 PM from its reporting area, Altoona (PA), 15 miles off.

28Good
  • Fine particles (PM2.5)28Good14.5 mi
  • Ozone27Good36 ppb14.5 mi

The days ahead

Good each day through Sun Oct 18, led by fine particles. Yesterday measured 24, good.

Smoke, the next 43 hours

Little smoke near the ground through Sun 8 AM: the index from smoke stays at 6 or under.

FriSatSun

Precipitation

What has fallen at Martinsburg Junction

0.03 in in the last 24 hours, 0.22 in over the last 3 days, to Fri 1 PM. Measured by radar and rain gauges, as water.

Last 24 hours
0.03in
Last 3 days
0.22in

Visibility

How far you can see at Martinsburg Junction, the next 43 hours

Visibility stays 9 miles or more through Sun 8 AM, lowest 9 miles Fri 4 PM.

FriSatSun

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

What is measuring near here

The 7 instruments nearest Martinsburg Junction, 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/10.6 mi away/1,032 ft/314 ft below here

precip, snowfall, snow depth

Rank-

Station report

The weather at Altoona/Blair Co., drawn

The nearest airport reporting now, 1.2 mi from Martinsburg Junction, Pennsylvania. From its report of Oct 16, 2026, 1:53 PM local time: 3 of its 6 sheets.

The sky

Scattered at 5,000 ft, broken at 6,000 ft; the ceiling is 6,000 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 5,000 feet, broken cloud with its base at 6,000 feet, the ceiling at 6,000 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 STATION02,5005,0007,50010,000ETAGESLOWMIDDLETHE STATIONTHE CEILOMETER READS TO 12,000 FT, ABOVE THIS SHEETBKN 6,000 FTBROKEN, 5 TO 7 EIGHTHS OF THE SKYSCT 5,000 FTSCATTERED, 3 TO 4 EIGHTHS OF THE SKYCEILING 6,000 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

The air

81.0 F with a dew point of 61.0 F, 51 per cent relative humidity. Air lifted from the station would cool to its dew point, where cloud forms, about 4,600 ft up; the lowest cloud reported is at 5,000 ft.

Chart of the air at Altoona/Blair Co.: temperature 81.0 degrees Fahrenheit and dew point 61.0, 51 per cent relative humidity; air lifted from the station cools along the dry rate and meets its dew point about 4,600 feet above the station, against the lowest cloud reported at 5,000 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 STATION01,0002,0003,0004,0005,0006,0007,00050 F60 F70 F80 F90 FSATURATES 4,600 FT ABOVE THE STATION, AT 56.4 FLOWEST CLOUD REPORTED, SCT 5,000 FTTEMPERATURE 81.0 FDEW POINT 61.0 FSPREAD 20.0 FRELATIVE HUMIDITY 51 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 southwest (240 degrees) at 23 mph, gusting 40 mph: force 5, a fresh breeze on the Beaufort scale. The strongest gust today was 40 mph.

Plan of the wind at Altoona/Blair Co., north up: blowing from 240 degrees, the west southwest, at 23 miles an hour, gusting 40; beside it the Beaufort scale from calm to hurricane force, force 5, fresh 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 240°BEAUFORT FORCELEAST WIND, MPH0CALM01LIGHT AIR12LIGHT BREEZE43GENTLE BREEZE84MODERATE BREEZE135FRESH BREEZE19NOW, 23 MPH6STRONG BREEZE257NEAR GALE328GALE39GUST, 40 MPH9STRONG 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

-

Snow on the ground

Elsewhere in Pennsylvania

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

Near Martinsburg Junction

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

Near Martinsburg Junction

River and lake gauges