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Yarmouth Port, Massachusetts

Community in Barnstable County, Massachusetts

Air quality

The air at Yarmouth Port

Index 31, good, led by ozone. Read at 8 AM from its reporting area, Cape Cod and Islands (MA), 9 miles off.

31Good
  • Ozone31Good27 ppb20.9 mi

The days ahead

Good each day through Sat Oct 17, led by fine particles. Yesterday measured 30, good.

Smoke, the next 42 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 Yarmouth Port

None in the last 24 hours; 0.18 in over the last 3 days, to Fri 8 AM. Measured by radar and rain gauges, as water.

Last 24 hours
0.00in
Last 3 days
0.18in

Visibility

How far you can see at Yarmouth Port, the next 42 hours

Dense fog: visibility falls to 0.1 miles Fri 3 PM, under a mile for 4 hours.

FriSat

On the radar over Yarmouth Port, MassachusettsReflectivityStorm topsRain rateRain, last 24 hoursForecast temperatureForecast rain totalEvery picture

What is measuring near here

The 6 instruments nearest Yarmouth Port, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 1.0 miles away.

measured now4 instruments

measured daily2 instruments

Dennis 0.8 SMA-BA-107

In a volunteer observer's own ground/1.0 mi away/61 ft/8 ft below here

precip, snowfall, snow depth

Rank345of 744

Wpc FacilityHYSM3

At a cooperative observer's station/5.2 mi away/43 ft/26 ft below here

snowfall, snow depth, precip, high, low

Rank350of 744

Station report

The weather at Hyannis/Polando Fld, drawn

The nearest airport reporting now, 4.3 mi from Yarmouth Port, Massachusetts. From its report of Oct 16, 2026, 8:56 AM local time: 3 of its 6 sheets.

The sky

Broken at 3,000 ft, overcast at 5,000 ft; the ceiling is 3,000 ft; visibility 10 mi or more.

Section of the sky over Hyannis/Polando Fld, height above the station to scale: broken cloud with its base at 3,000 feet, overcast cloud with its base at 5,000 feet, the ceiling at 3,000 feet, and visibility of 10 mi or more.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT HYAFIG. A THE SKY OVER HYANNIS/POLANDO FLDSECTION, 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 STATION01,0002,0003,0004,0005,0006,0007,0008,000ETAGESLOWMIDDLETHE STATIONTHE CEILOMETER READS TO 12,000 FT, ABOVE THIS SHEETOVC 5,000 FTOVERCAST, 8 EIGHTHS OF THE SKYBKN 3,000 FTBROKEN, 5 TO 7 EIGHTHS OF THE SKYCEILING 3,000 FTVISIBILITY, MILES: 10 MI OR MORE0510TITLEHyannis/Polando Fld, the skySTATION REPORT · ASOS HYATYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 1 of 6DATE2026-10-16IDSR-HYA-1DRAWN AS linework on paperSOURCES FB-SKY-001, FB-SKY-017, FB-SKY-016, FB-SKY-018

The air

59.0 F with a dew point of 51.0 F, 75 per cent relative humidity. Air lifted from the station would cool to its dew point, where cloud forms, about 1,800 ft up; the lowest cloud reported is at 3,000 ft.

Chart of the air at Hyannis/Polando Fld: temperature 59.0 degrees Fahrenheit and dew point 51.0, 75 per cent relative humidity; air lifted from the station cools along the dry rate and meets its dew point about 1,800 feet above the station, against the lowest cloud reported at 3,000 feet; height to scale.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT HYAFIG. B THE AIR AT HYANNIS/POLANDO FLDTHE REPORTED TEMPERATURE AND DEW POINT, AND AIR LIFTED FROM THE STATION WITHOUT MIXING UNTIL IT SATURATES; HEIGHT ABOVE THE STATION TO SCALEFT ABOVE THE STATION01,0002,0003,0004,00040 F50 F60 F70 FSATURATES 1,800 FT ABOVE THE STATION, AT 49.2 FLOWEST CLOUD REPORTED, BKN 3,000 FTTEMPERATURE 59.0 FDEW POINT 51.0 FSPREAD 8.0 FRELATIVE HUMIDITY 75 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 POINTTITLEHyannis/Polando Fld, the airSTATION REPORT · ASOS HYATYPECHARTSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 2 of 6DATE2026-10-16IDSR-HYA-2DRAWN AS linework on paperSOURCES FB-WAT-002, FB-ENG-011, FB-ENG-005

The wind

From the south (180 degrees) at 8 mph, gusting 24 mph: force 3, a gentle breeze on the Beaufort scale. The strongest gust today was 24 mph.

Plan of the wind at Hyannis/Polando Fld, north up: blowing from 180 degrees, the south, at 8 miles an hour, gusting 24; beside it the Beaufort scale from calm to hurricane force, force 3, gentle breeze, marked.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT HYAFIG. C THE WIND AT HYANNIS/POLANDO FLDPLAN, NORTH UP: THE WIND AS REPORTED, AND WHERE IT SITS ON THE BEAUFORT SCALENESWTHE STATIONFROM 180°BEAUFORT FORCELEAST WIND, MPH0CALM01LIGHT AIR12LIGHT BREEZE43GENTLE BREEZE8NOW, 8 MPH4MODERATE BREEZE135FRESH BREEZE19GUST, 24 MPH6STRONG BREEZE257NEAR GALE328GALE399STRONG GALE4710STORM5511VIOLENT STORM6412HURRICANE FORCE73TITLEHyannis/Polando Fld, the windSTATION REPORT · ASOS HYATYPEPLAN north upSCALENOT TO SCALEREVAS REPORTED SHEET 3 of 6DATE2026-10-16IDSR-HYA-3DRAWN AS linework on paperSOURCES FB-EVT-150, FB-ENG-008, FB-INS-002

The full report of Hyannis/Polando Fld, in 6 sheets, each beside the Field Book plates that explain it

0in

Snow on the ground

Measured at Wpc Facility (HYSM3), 5.2 miles from here, read 15 Oct, 08:33. measured daily

Elsewhere in Massachusetts

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

Near Yarmouth Port

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

Near Yarmouth Port

River and lake gauges