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Siasconset, Massachusetts

Community in Nantucket County, Massachusetts

Air quality

The air at Siasconset

Index 29, good, led by ozone. Read at 12 AM from its reporting area, Cape Cod and Islands (MA), 32 miles off.

29Good
  • Ozone29Good-

The days ahead

Good each day through Sat Oct 17, led by fine particles. Yesterday measured 43, good.

Smoke, the next 44 hours

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

FriSat

Precipitation

What has fallen at Siasconset

None in the last 3 days, to Thu 11 PM. Measured by radar and rain gauges, as water.

Last 24 hours
0.00in
Last 3 days
0.00in

Visibility

How far you can see at Siasconset, the next 44 hours

Dense fog: visibility falls to 0 miles Fri 8 PM, under a mile for 6 hours.

FriSat

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

What is measuring near here

The 6 instruments nearest Siasconset, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 1.1 miles away.

measured now4 instruments

measured daily2 instruments

Nantucket ASOSACKM3

At a cooperative observer's station/6.6 mi away/23 ft/15 ft below here

snowfall, snow depth, precip, high, low

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Station report

The weather at Nantucket Memorial, drawn

The nearest airport reporting now, 5.0 mi from Siasconset, Massachusetts. From its report of Oct 15, 2026, 11:53 PM local time: 3 of its 6 sheets.

The sky

No cloud below 12,000 ft; visibility 10 mi or more.

Section of the sky over Nantucket Memorial, height above the station to scale: no cloud detected below 12,000 feet, the reach of its ceilometer, and visibility of 10 mi or more.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT ACKFIG. A THE SKY OVER NANTUCKET MEMORIALSECTION, 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 STATION05001,0001,5002,0002,5003,000ETAGESLOWTHE STATIONTHE CEILOMETER READS TO 12,000 FT, ABOVE THIS SHEETNO CLOUD DETECTED BELOW 12,000 FTVISIBILITY, MILES: 10 MI OR MORE0510TITLENantucket Memorial, the skySTATION REPORT · ASOS ACKTYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 1 of 6DATE2026-10-16IDSR-ACK-1DRAWN AS linework on paperSOURCES FB-SKY-001

The air

44.0 F with a dew point of 39.0 F, 82 per cent relative humidity. Air lifted from the station would cool to its dew point, where cloud forms, about 1,200 ft up.

Chart of the air at Nantucket Memorial: temperature 44.0 degrees Fahrenheit and dew point 39.0, 82 per cent relative humidity; air lifted from the station cools along the dry rate and meets its dew point about 1,200 feet above the station; height to scale.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT ACKFIG. B THE AIR AT NANTUCKET MEMORIALTHE REPORTED TEMPERATURE AND DEW POINT, AND AIR LIFTED FROM THE STATION WITHOUT MIXING UNTIL IT SATURATES; HEIGHT ABOVE THE STATION TO SCALEFT ABOVE THE STATION01,0002,0003,00030 F40 F50 FSATURATES 1,200 FT ABOVE THE STATION, AT 37.8 FTEMPERATURE 44.0 FDEW POINT 39.0 FSPREAD 5.0 FRELATIVE HUMIDITY 82 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 POINTTITLENantucket Memorial, the airSTATION REPORT · ASOS ACKTYPECHARTSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 2 of 6DATE2026-10-16IDSR-ACK-2DRAWN AS linework on paperSOURCES FB-WAT-002, FB-ENG-011, FB-ENG-005

The wind

From the east southeast (110 degrees) at 9 mph: force 3, a gentle breeze on the Beaufort scale. The strongest gust today was 35 mph.

Plan of the wind at Nantucket Memorial, north up: blowing from 110 degrees, the east southeast, 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 ACKFIG. C THE WIND AT NANTUCKET MEMORIALPLAN, NORTH UP: THE WIND AS REPORTED, AND WHERE IT SITS ON THE BEAUFORT SCALENESWTHE STATIONFROM 110°BEAUFORT FORCELEAST WIND, MPH0CALM01LIGHT AIR12LIGHT BREEZE43GENTLE BREEZE8NOW, 9 MPH4MODERATE BREEZE135FRESH BREEZE196STRONG BREEZE257NEAR GALE328GALE399STRONG GALE4710STORM5511VIOLENT STORM6412HURRICANE FORCE73TITLENantucket Memorial, the windSTATION REPORT · ASOS ACKTYPEPLAN north upSCALENOT TO SCALEREVAS REPORTED SHEET 3 of 6DATE2026-10-16IDSR-ACK-3DRAWN AS linework on paperSOURCES FB-EVT-150, FB-ENG-008, FB-INS-002

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

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Snow on the ground

Elsewhere in Massachusetts

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

Near Siasconset

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

Near Siasconset

River and lake gauges