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Jennerstown, Pennsylvania

Borough in Somerset County, Pennsylvania

Air quality

The air at Jennerstown

Index 22, good, led by fine particles. Read at 5 AM from its reporting area, Johnstown (PA), 14 miles off.

22Good
  • Fine particles (PM2.5)22Good12.8 mi
  • Ozone6Good3 ppb12.8 mi

The days ahead

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

Smoke, the next 46 hours

Little smoke near the ground through Sun 2 AM: the index from smoke stays at 11 or under.

FriSat

Precipitation

What has fallen at Jennerstown

0.09 in in the last 24 hours, 0.51 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
0.51in

Visibility

How far you can see at Jennerstown, the next 46 hours

Mist or haze: visibility falls to 2 miles Fri 3 PM.

FriSat

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

What is measuring near here

The 6 instruments nearest Jennerstown, 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

Quarry TrailQTRP1

At a river or reservoir gauge/8.3 mi away/2,749 ft/807 ft above here

temp, wind, gust, humidity, pressure

Rank339of 1,383

Somerset2G9

At an airfield/8.8 mi away/2,231 ft/289 ft above here

temp, wind, gust, visibility, precip, pressure

Rank8of 1,383

measured daily2 instruments

Boswell 6.0 WPA-SM-11

In a volunteer observer's own ground/4.1 mi away/2,704 ft/762 ft above here

precip, snowfall, snow depth

Rank-

Station report

The weather at Somerset, drawn

The nearest airport reporting now, 8.8 mi from Jennerstown, Pennsylvania. From its report of Oct 16, 2026, 5:35 AM local time: 3 of its 6 sheets.

The sky

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 Somerset, height above the station to scale: 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 2G9FIG. A THE SKY OVER SOMERSETSECTION, 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 SKYCEILING 6,500 FTVISIBILITY, MILES: 10 MI OR MORE0510TITLESomerset, the skySTATION REPORT · ASOS 2G9TYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 1 of 6DATE2026-10-16IDSR-2G9-1DRAWN AS linework on paperSOURCES FB-SKY-001, FB-SKY-013, FB-SKY-014

The air

66.2 F with a dew point of 64.4 F, 94 per cent relative humidity. Air lifted from the station would cool to its dew point, where cloud forms, about 400 ft up; the lowest cloud reported is at 6,500 ft.

Chart of the air at Somerset: temperature 66.2 degrees Fahrenheit and dew point 64.4, 94 per cent relative humidity; air lifted from the station cools along the dry rate and meets its dew point about 400 feet above the station, against the lowest cloud reported at 6,500 feet; height to scale.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT 2G9FIG. B THE AIR AT SOMERSETTHE REPORTED TEMPERATURE AND DEW POINT, AND AIR LIFTED FROM THE STATION WITHOUT MIXING UNTIL IT SATURATES; HEIGHT ABOVE THE STATION TO SCALEFT ABOVE THE STATION01,0002,0003,0004,00050 F60 F70 F80 FSATURATES 400 FT ABOVE THE STATION, AT 63.9 FABOVE THIS SHEET: LOWEST CLOUD REPORTED, BKN 6,500 FTTEMPERATURE AND DEW POINT 66.2 F, 64.4 FRELATIVE HUMIDITY 94 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 POINTTITLESomerset, the airSTATION REPORT · ASOS 2G9TYPECHARTSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 2 of 6DATE2026-10-16IDSR-2G9-2DRAWN AS linework on paperSOURCES FB-WAT-020, FB-WAT-002, FB-ENG-011, FB-ENG-005

The wind

From the southwest (220 degrees) at 9 mph: force 3, a gentle breeze on the Beaufort scale. The strongest gust today was 17 mph.

Plan of the wind at Somerset, north up: blowing from 220 degrees, the 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 2G9FIG. C THE WIND AT SOMERSETPLAN, NORTH UP: THE WIND AS REPORTED, AND WHERE IT SITS ON THE BEAUFORT SCALENESWTHE STATIONFROM 220°BEAUFORT FORCELEAST WIND, MPH0CALM01LIGHT AIR12LIGHT BREEZE43GENTLE BREEZE8NOW, 9 MPH4MODERATE BREEZE135FRESH BREEZE196STRONG BREEZE257NEAR GALE328GALE399STRONG GALE4710STORM5511VIOLENT STORM6412HURRICANE FORCE73TITLESomerset, the windSTATION REPORT · ASOS 2G9TYPEPLAN north upSCALENOT TO SCALEREVAS REPORTED SHEET 3 of 6DATE2026-10-16IDSR-2G9-3DRAWN AS linework on paperSOURCES FB-EVT-150, FB-ENG-008, FB-INS-002

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

0in

Snow on the ground

Measured at Laughlintown 1SE (RRFP1), 8.6 miles from here, read 15 Oct, 08:00. measured daily

Elsewhere in Pennsylvania

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

Near Jennerstown

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

Near Jennerstown

River and lake gauges