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Onset, Massachusetts

Community in Plymouth County, Massachusetts

Air quality

The air at Onset

Index 30, good, led by ozone. Read at 8 AM from its reporting area, South Bristol-Plymouth (MA), 16 miles off.

30Good
  • Fine particles (PM2.5)17Good-
  • Ozone30Good31 ppb13.9 mi

The days ahead

Good each day through Sat Oct 17, led by fine particles. Yesterday measured 31, 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 Onset

None in the last 24 hours; 0.15 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
0.15in

Visibility

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

Dense fog: visibility falls to 0.1 miles Fri 3 PM, under a mile for 5 hours.

FriSat

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

What is measuring near here

The 6 instruments nearest Onset, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 1.5 miles away.

measured now4 instruments

Otis ANGBFMH

At an airfield/9.4 mi away/131 ft/116 ft above here

temp, wind, gust, visibility, precip, pressure

Rank166of 744

measured daily2 instruments

Buzzards Bay 1.3 NMA-BA-104

In a volunteer observer's own ground/2.6 mi away/23 ft/8 ft above here

precip, snowfall, snow depth

Rank-

Station report

The weather at Otis ANGB, drawn

The nearest airport reporting now, 9.4 mi from Onset, Massachusetts. From its report of Oct 16, 2026, 7:56 AM local time: 3 of its 6 sheets.

The sky

Overcast at 5,000 ft; the ceiling is 5,000 ft; visibility 10 mi or more.

Section of the sky over Otis ANGB, height above the station to scale: overcast cloud with its base at 5,000 feet, the ceiling at 5,000 feet, and visibility of 10 mi or more.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT FMHFIG. A THE SKY OVER OTIS ANGBSECTION, 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 STATIONOVC 5,000 FTOVERCAST, 8 EIGHTHS OF THE SKYCEILING 5,000 FTVISIBILITY, MILES: 10 MI OR MORE0510TITLEOtis ANGB, the skySTATION REPORT · ASOS FMHTYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 1 of 6DATE2026-10-16IDSR-FMH-1DRAWN AS linework on paperSOURCES FB-SKY-001, FB-SKY-017, FB-SKY-016, FB-SKY-018

The air

57.2 F with a dew point of 51.8 F, 82 per cent relative humidity. Air lifted from the station would cool to its dew point, where cloud forms, about 1,300 ft up; the lowest cloud reported is at 5,000 ft.

Chart of the air at Otis ANGB: temperature 57.2 degrees Fahrenheit and dew point 51.8, 82 per cent relative humidity; air lifted from the station cools along the dry rate and meets its dew point about 1,300 feet above the station, against the lowest cloud reported at 5,000 feet; height to scale.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT FMHFIG. B THE AIR AT OTIS ANGBTHE REPORTED TEMPERATURE AND DEW POINT, AND AIR LIFTED FROM THE STATION WITHOUT MIXING UNTIL IT SATURATES; HEIGHT ABOVE THE STATION TO SCALEFT ABOVE THE STATION01,0002,0003,0004,0005,0006,00040 F50 F60 F70 FSATURATES 1,300 FT ABOVE THE STATION, AT 50.5 FLOWEST CLOUD REPORTED, OVC 5,000 FTTEMPERATURE 57.2 FDEW POINT 51.8 FSPREAD 5.4 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 POINTTITLEOtis ANGB, the airSTATION REPORT · ASOS FMHTYPECHARTSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 2 of 6DATE2026-10-16IDSR-FMH-2DRAWN AS linework on paperSOURCES FB-WAT-002, FB-ENG-011, FB-ENG-005

The wind

From the south southeast (160 degrees) at 16 mph, gusting 23 mph: force 4, a moderate breeze on the Beaufort scale. The strongest gust today was 23 mph.

Plan of the wind at Otis ANGB, north up: blowing from 160 degrees, the south southeast, at 16 miles an hour, gusting 23; beside it the Beaufort scale from calm to hurricane force, force 4, moderate breeze, marked.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT FMHFIG. C THE WIND AT OTIS ANGBPLAN, NORTH UP: THE WIND AS REPORTED, AND WHERE IT SITS ON THE BEAUFORT SCALENESWTHE STATIONFROM 160°BEAUFORT FORCELEAST WIND, MPH0CALM01LIGHT AIR12LIGHT BREEZE43GENTLE BREEZE84MODERATE BREEZE13NOW, 16 MPH5FRESH BREEZE19GUST, 23 MPH6STRONG BREEZE257NEAR GALE328GALE399STRONG GALE4710STORM5511VIOLENT STORM6412HURRICANE FORCE73TITLEOtis ANGB, the windSTATION REPORT · ASOS FMHTYPEPLAN north upSCALENOT TO SCALEREVAS REPORTED SHEET 3 of 6DATE2026-10-16IDSR-FMH-3DRAWN AS linework on paperSOURCES FB-EVT-150, FB-ENG-008, FB-INS-002

The full report of Otis ANGB, 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 Onset

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

Near Onset

River and lake gauges