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Dedham, Massachusetts

Community in Norfolk County, Massachusetts

Air quality

The air at Dedham

Index 22, good, led by ozone. Read at 2 PM from its reporting area, Norfolk (MA), 7 miles off.

22Good
  • Fine particles (PM2.5)13Good7.3 mi
  • Ozone22Good23 ppb7.3 mi
  • Coarse particles (PM10)-7.3 mi
  • Nitrogen dioxide4Good4 ppb7.3 mi
  • Sulfur dioxide0Good0.3 ppb7.3 mi
  • Carbon monoxide-0.1 ppm7.3 mi

The days ahead

Good each day through Tue Oct 20, led by fine particles. Yesterday measured 27, good.

Smoke, the next 43 hours

No smoke near the ground through Sun 8 AM.

FriSatSun

Precipitation

What has fallen at Dedham

0.47 in in the last 24 hours, 0.57 in over the last 3 days, to Fri 1 PM. Measured by radar and rain gauges, as water.

Last 24 hours
0.47in
Last 3 days
0.57in

Visibility

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

Mist or haze: visibility falls to 1 miles Fri 8 PM.

FriSatSun

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

What is measuring near here

The 6 instruments nearest Dedham, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 0.6 miles away.

measured now4 instruments

Blue Hills Obs USCRNBHIM3

At a river or reservoir gauge/3.2 mi away/620 ft/484 ft above here

temp, wind, gust, humidity, pressure

Rank-

CantonMA011

Beside a road/4.1 mi away/164 ft/28 ft above here

temp, pavement temp, wind, visibility, precip

Rank393of 744

measured daily2 instruments

Dedham 1.5 ESEMA-NF-71

In a volunteer observer's own ground/0.6 mi away/97 ft/39 ft below here

precip, snowfall, snow depth

Rank-

Blue Hill LCDBHOM3

At a cooperative observer's station/3.3 mi away/623 ft/487 ft above here

snowfall, snow depth, precip, high, low

Rank-

Station report

The weather at Norwood Memorial, drawn

The nearest airport reporting now, 3.7 mi from Dedham, Massachusetts. From its report of Oct 16, 2026, 1:53 PM local time: 3 of its 6 sheets.

The sky

Overcast at 800 ft; the ceiling is 800 ft; visibility 10 mi or more.

Section of the sky over Norwood Memorial, height above the station to scale: overcast cloud with its base at 800 feet, the ceiling at 800 feet, and visibility of 10 mi or more.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT OWDFIG. A THE SKY OVER NORWOOD 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 SHEETOVC 800 FTOVERCAST, 8 EIGHTHS OF THE SKYCEILING 800 FTVISIBILITY, MILES: 10 MI OR MORE0510TITLENorwood Memorial, the skySTATION REPORT · ASOS OWDTYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 1 of 6DATE2026-10-16IDSR-OWD-1DRAWN AS linework on paperSOURCES FB-SKY-001, FB-SKY-017, FB-SKY-016, FB-SKY-018

The air

67.0 F with a dew point of 64.0 F, 90 per cent relative humidity. Air lifted from the station would cool to its dew point, where cloud forms, about 700 ft up; the lowest cloud reported is at 800 ft.

Chart of the air at Norwood Memorial: temperature 67.0 degrees Fahrenheit and dew point 64.0, 90 per cent relative humidity; air lifted from the station cools along the dry rate and meets its dew point about 700 feet above the station, against the lowest cloud reported at 800 feet; height to scale.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT OWDFIG. B THE AIR AT NORWOOD 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 STATION01,0002,0003,00050 F60 F70 F80 FSATURATES 700 FT ABOVE THE STATION, AT 63.3 FLOWEST CLOUD REPORTED, OVC 800 FTTEMPERATURE 67.0 FDEW POINT 64.0 FSPREAD 3.0 FRELATIVE HUMIDITY 90 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 POINTTITLENorwood Memorial, the airSTATION REPORT · ASOS OWDTYPECHARTSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 2 of 6DATE2026-10-16IDSR-OWD-2DRAWN AS linework on paperSOURCES FB-WAT-020, FB-WAT-002, FB-ENG-011, FB-ENG-005

The wind

From the south southwest (200 degrees) at 9 mph: force 3, a gentle breeze on the Beaufort scale. The strongest gust today was 21 mph.

Plan of the wind at Norwood Memorial, north up: blowing from 200 degrees, the south 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 OWDFIG. C THE WIND AT NORWOOD MEMORIALPLAN, NORTH UP: THE WIND AS REPORTED, AND WHERE IT SITS ON THE BEAUFORT SCALENESWTHE STATIONFROM 200°BEAUFORT FORCELEAST WIND, MPH0CALM01LIGHT AIR12LIGHT BREEZE43GENTLE BREEZE8NOW, 9 MPH4MODERATE BREEZE135FRESH BREEZE196STRONG BREEZE257NEAR GALE328GALE399STRONG GALE4710STORM5511VIOLENT STORM6412HURRICANE FORCE73TITLENorwood Memorial, the windSTATION REPORT · ASOS OWDTYPEPLAN north upSCALENOT TO SCALEREVAS REPORTED SHEET 3 of 6DATE2026-10-16IDSR-OWD-3DRAWN AS linework on paperSOURCES FB-EVT-150, FB-ENG-008, FB-INS-002

The full report of Norwood 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 Dedham

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

Near Dedham

River and lake gauges