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Twin Rocks, Pennsylvania

Community in Cambria County, Pennsylvania

Air quality

The air at Twin Rocks

Index 22, good, led by fine particles. Read at 4 AM from its reporting area, Johnstown (PA), 12 miles off.

22Good
  • Fine particles (PM2.5)22Good5.4 mi
  • Ozone6Good13 ppb5.4 mi

The days ahead

Good each day through Sun Oct 18, led by fine particles. Yesterday measured 27, good.

Smoke, the next 40 hours

Little smoke near the ground through Sat 8 PM: the index from smoke stays at 11 or under.

FriSat

Precipitation

What has fallen at Twin Rocks

0.09 in in the last 24 hours, 0.39 in over the last 3 days, to Fri 4 AM. Measured by radar and rain gauges, as water.

Last 24 hours
0.09in
Last 3 days
0.39in

Visibility

How far you can see at Twin Rocks, the next 40 hours

Visibility stays 3 miles or more through Sat 8 PM, lowest 4 miles Fri 3 PM.

FriSat

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

What is measuring near here

The 6 instruments nearest Twin Rocks, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 4.1 miles away.

measured now4 instruments

measured daily2 instruments

Colver 0.5 SSWPA-CM-6

In a volunteer observer's own ground/4.1 mi away/1,995 ft/225 ft above here

precip, snowfall, snow depth

Rank-

EbensburgEBNP1

At a cooperative observer's station/7.1 mi away/1,929 ft/159 ft above here

snowfall, snow depth, precip, high, low

Rank-

Station report

The weather at Johnstown/Cambria, drawn

The nearest airport reporting now, 12.9 mi from Twin Rocks, Pennsylvania. From its report of Oct 16, 2026, 4:54 AM local time: 3 of its 6 sheets.

The sky

A few clouds at 300 ft, broken at 6,500 ft, overcast at 8,000 ft; the ceiling is 6,500 ft; visibility 10 mi or more.

Section of the sky over Johnstown/Cambria, height above the station to scale: a few clouds cloud with its base at 300 feet, broken cloud with its base at 6,500 feet, overcast cloud with its base at 8,000 feet, the ceiling at 6,500 feet, and visibility of 10 mi or more.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT JSTFIG. A THE SKY OVER JOHNSTOWN/CAMBRIASECTION, 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 FTOVC 8,000 FTOVERCAST, 8 EIGHTHS OF THE SKYBKN 6,500 FTBROKEN, 5 TO 7 EIGHTHS OF THE SKYFEW 300 FTA FEW CLOUDS, 1 TO 2 EIGHTHS OF THE SKYCEILING 6,500 FTVISIBILITY, MILES: 10 MI OR MORE0510TITLEJohnstown/Cambria, the skySTATION REPORT · ASOS JSTTYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 1 of 6DATE2026-10-16IDSR-JST-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

64.0 F with a dew point of 63.0 F, 97 per cent relative humidity. Air lifted from the station would cool to its dew point, where cloud forms, about 200 ft up; the lowest cloud reported is at 300 ft.

Chart of the air at Johnstown/Cambria: temperature 64.0 degrees Fahrenheit and dew point 63.0, 97 per cent relative humidity; air lifted from the station cools along the dry rate and meets its dew point about 200 feet above the station, against the lowest cloud reported at 300 feet; height to scale.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT JSTFIG. B THE AIR AT JOHNSTOWN/CAMBRIATHE 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 FSATURATES 200 FT ABOVE THE STATION, AT 62.7 FLOWEST CLOUD REPORTED, FEW 300 FTTEMPERATURE AND DEW POINT 64.0 F, 63.0 FRELATIVE HUMIDITY 97 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 POINTTITLEJohnstown/Cambria, the airSTATION REPORT · ASOS JSTTYPECHARTSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 2 of 6DATE2026-10-16IDSR-JST-2DRAWN AS linework on paperSOURCES FB-WAT-020, FB-WAT-002, FB-ENG-011, FB-ENG-005

The wind

From the south southwest (210 degrees) at 9 mph: force 3, a gentle breeze on the Beaufort scale. The strongest gust today was 20 mph.

Plan of the wind at Johnstown/Cambria, north up: blowing from 210 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 JSTFIG. C THE WIND AT JOHNSTOWN/CAMBRIAPLAN, NORTH UP: THE WIND AS REPORTED, AND WHERE IT SITS ON THE BEAUFORT SCALENESWTHE STATIONFROM 210°BEAUFORT FORCELEAST WIND, MPH0CALM01LIGHT AIR12LIGHT BREEZE43GENTLE BREEZE8NOW, 9 MPH4MODERATE BREEZE135FRESH BREEZE196STRONG BREEZE257NEAR GALE328GALE399STRONG GALE4710STORM5511VIOLENT STORM6412HURRICANE FORCE73TITLEJohnstown/Cambria, the windSTATION REPORT · ASOS JSTTYPEPLAN north upSCALENOT TO SCALEREVAS REPORTED SHEET 3 of 6DATE2026-10-16IDSR-JST-3DRAWN AS linework on paperSOURCES FB-EVT-150, FB-ENG-008, FB-INS-002

The full report of Johnstown/Cambria, in 6 sheets, each beside the Field Book plates that explain it

0in

Snow on the ground

Measured at Ebensburg (EBNP1), 7.1 miles from here, read 13 Oct, 08:00. measured daily

Elsewhere in Pennsylvania

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

Near Twin Rocks

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

Near Twin Rocks

River and lake gauges