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Carnegie, Pennsylvania

Borough in Allegheny County, Pennsylvania

Air quality

The air at Carnegie

Index 64, moderate, led by fine particles. Read at 8 AM from its reporting area, Mon Valley Area (PA), 13 miles off.

64Moderate
  • Fine particles (PM2.5)64Moderate5.4 mi
  • Ozone-33 ppb5.4 mi

The days ahead

Good each day through Sun Oct 18, led by fine particles. Yesterday measured 29, good.

Smoke, the next 43 hours

Little smoke near the ground through Sun 2 AM: the index from smoke stays at 6 or under.

FriSat

Precipitation

What has fallen at Carnegie

None in the last 24 hours; 0.51 in over the last 3 days, to Fri 7 AM. Measured by radar and rain gauges, as water.

Last 24 hours
0.00in
Last 3 days
0.51in

Visibility

How far you can see at Carnegie, the next 43 hours

Visibility stays 3 miles or more through Sun 2 AM, lowest 3 miles Fri 1 PM.

FriSat

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

What is measuring near here

The 6 instruments nearest Carnegie, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 0.4 miles away.

measured now4 instruments

measured daily2 instruments

Carnegie 0.5 SSWPA-AL-45

In a volunteer observer's own ground/0.4 mi away/833 ft/19 ft below here

precip, snowfall, snow depth

Rank-

Station report

The weather at Pittsburgh/Alleghen, drawn

The nearest airport reporting now, 9.3 mi from Carnegie, Pennsylvania. From its report of Oct 16, 2026, 7:53 AM local time: 3 of its 6 sheets.

The sky

Broken at 3,200 ft; the ceiling is 3,200 ft; visibility 10 mi or more.

Section of the sky over Pittsburgh/Alleghen, height above the station to scale: broken cloud with its base at 3,200 feet, the ceiling at 3,200 feet, and visibility of 10 mi or more.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT AGCFIG. A THE SKY OVER PITTSBURGH/ALLEGHENSECTION, 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 STATION01,0002,0003,0004,0005,000ETAGESLOWTHE STATIONTHE CEILOMETER READS TO 12,000 FT, ABOVE THIS SHEETBKN 3,200 FTBROKEN, 5 TO 7 EIGHTHS OF THE SKYCEILING 3,200 FTVISIBILITY, MILES: 10 MI OR MORE0510TITLEPittsburgh/Alleghen, the skySTATION REPORT · ASOS AGCTYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 1 of 6DATE2026-10-16IDSR-AGC-1DRAWN AS linework on paperSOURCES FB-SKY-001, FB-SKY-017, FB-SKY-016, FB-SKY-018

The air

70.0 F with a dew point of 64.0 F, 81 per cent relative humidity. Air lifted from the station would cool to its dew point, where cloud forms, about 1,400 ft up; the lowest cloud reported is at 3,200 ft.

Chart of the air at Pittsburgh/Alleghen: temperature 70.0 degrees Fahrenheit and dew point 64.0, 81 per cent relative humidity; air lifted from the station cools along the dry rate and meets its dew point about 1,400 feet above the station, against the lowest cloud reported at 3,200 feet; height to scale.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT AGCFIG. B THE AIR AT PITTSBURGH/ALLEGHENTHE 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 1,400 FT ABOVE THE STATION, AT 62.6 FLOWEST CLOUD REPORTED, BKN 3,200 FTTEMPERATURE 70.0 FDEW POINT 64.0 FSPREAD 6.0 FRELATIVE HUMIDITY 81 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 POINTTITLEPittsburgh/Alleghen, the airSTATION REPORT · ASOS AGCTYPECHARTSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 2 of 6DATE2026-10-16IDSR-AGC-2DRAWN AS linework on paperSOURCES FB-WAT-002, FB-ENG-011, FB-ENG-005

The wind

From the south (190 degrees) at 8 mph: force 3, a gentle breeze on the Beaufort scale. The strongest gust today was 18 mph.

Plan of the wind at Pittsburgh/Alleghen, north up: blowing from 190 degrees, the south, 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 AGCFIG. C THE WIND AT PITTSBURGH/ALLEGHENPLAN, NORTH UP: THE WIND AS REPORTED, AND WHERE IT SITS ON THE BEAUFORT SCALENESWTHE STATIONFROM 190°BEAUFORT FORCELEAST WIND, MPH0CALM01LIGHT AIR12LIGHT BREEZE43GENTLE BREEZE8NOW, 8 MPH4MODERATE BREEZE135FRESH BREEZE196STRONG BREEZE257NEAR GALE328GALE399STRONG GALE4710STORM5511VIOLENT STORM6412HURRICANE FORCE73TITLEPittsburgh/Alleghen, the windSTATION REPORT · ASOS AGCTYPEPLAN north upSCALENOT TO SCALEREVAS REPORTED SHEET 3 of 6DATE2026-10-16IDSR-AGC-3DRAWN AS linework on paperSOURCES FB-EVT-150, FB-ENG-008, FB-INS-002

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

0in

Snow on the ground

Measured at Emsworth Dam (EMSP1), 6.8 miles from here, read 16 Oct, 06:00. measured daily

Elsewhere in Pennsylvania

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

Near Carnegie

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

Near Carnegie

River and lake gauges