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Cambridge, Massachusetts

City in Middlesex County, Massachusetts

Air quality

The air at Cambridge

Index 17, good, led by fine particles. Read at 3 AM from its reporting area, Boston Metro (MA), 2 miles off.

17Good
  • Fine particles (PM2.5)17Good-
  • Ozone16Good-
  • Coarse particles (PM10)5Good-

The days ahead

Good each day through Sat Oct 17, led by fine particles. Yesterday measured 24, good.

Smoke, the next 41 hours

No smoke near the ground through Sat 8 PM.

FriSat

Precipitation

What has fallen at Cambridge

None in the last 24 hours; 0.14 in over the last 3 days, to Fri 2 AM. Measured by radar and rain gauges, as water.

Last 24 hours
0.00in
Last 3 days
0.14in

Visibility

How far you can see at Cambridge, the next 41 hours

Mist or haze: visibility falls to 2 miles Fri 9 AM.

FriSat

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

What is measuring near here

The 6 instruments nearest Cambridge, 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

NewtonMA006

Beside a road/7.9 mi away/62 ft/32 ft above here

temp, pavement temp, wind, visibility, precip

Rank740of 744

measured daily2 instruments

Cambridge 0.8 SSEMA-MD-124

In a volunteer observer's own ground/0.4 mi away/9 ft/21 ft below here

precip, snowfall, snow depth

Rank-

Jamacia PlainJPBM3

At a cooperative observer's station/4.7 mi away/102 ft/72 ft above here

snowfall, snow depth, precip, high, low

Rank464of 744

Station report

The weather at Boston/Logan INTL, drawn

The nearest airport reporting now, 5.2 mi from Cambridge, Massachusetts. From its report of Oct 16, 2026, 3:54 AM local time: 3 of its 6 sheets.

The sky

A few clouds at 7,000 ft, scattered at 12,000 ft, overcast at 18,000 ft; the ceiling is 18,000 ft; visibility 10 mi or more.

Section of the sky over Boston/Logan INTL, height above the station to scale: a few clouds cloud with its base at 7,000 feet, scattered cloud with its base at 12,000 feet, overcast cloud with its base at 18,000 feet, the ceiling at 18,000 feet, and visibility of 10 mi or more.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT BOSFIG. A THE SKY OVER BOSTON/LOGAN INTLSECTION, 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 STATION05,00010,00015,00020,00025,00030,000ETAGESLOWMIDDLEHIGHTHE STATIONTHE CEILOMETER READS TO 12,000 FTOVC 18,000 FTOVERCAST, 8 EIGHTHS OF THE SKYSCT 12,000 FTSCATTERED, 3 TO 4 EIGHTHS OF THE SKYFEW 7,000 FTA FEW CLOUDS, 1 TO 2 EIGHTHS OF THE SKYCEILING 18,000 FTVISIBILITY, MILES: 10 MI OR MORE0510TITLEBoston/Logan INTL, the skySTATION REPORT · ASOS BOSTYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 1 of 6DATE2026-10-16IDSR-BOS-1DRAWN AS linework on paperSOURCES FB-SKY-001, FB-SKY-013, FB-SKY-014, FB-SKY-010, FB-SKY-011, FB-SKY-012

The air

52.0 F with a dew point of 43.0 F, 71 per cent relative humidity. Air lifted from the station would cool to its dew point, where cloud forms, about 2,100 ft up; the lowest cloud reported is at 7,000 ft.

Chart of the air at Boston/Logan INTL: temperature 52.0 degrees Fahrenheit and dew point 43.0, 71 per cent relative humidity; air lifted from the station cools along the dry rate and meets its dew point about 2,100 feet above the station, against the lowest cloud reported at 7,000 feet; height to scale.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT BOSFIG. B THE AIR AT BOSTON/LOGAN INTLTHE REPORTED TEMPERATURE AND DEW POINT, AND AIR LIFTED FROM THE STATION WITHOUT MIXING UNTIL IT SATURATES; HEIGHT ABOVE THE STATION TO SCALEFT ABOVE THE STATION01,0002,0003,0004,0005,0006,0007,0008,00030 F40 F50 F60 FSATURATES 2,100 FT ABOVE THE STATION, AT 41.0 FLOWEST CLOUD REPORTED, FEW 7,000 FTTEMPERATURE 52.0 FDEW POINT 43.0 FSPREAD 9.0 FRELATIVE HUMIDITY 71 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 POINTTITLEBoston/Logan INTL, the airSTATION REPORT · ASOS BOSTYPECHARTSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 2 of 6DATE2026-10-16IDSR-BOS-2DRAWN AS linework on paperSOURCES FB-WAT-002, FB-ENG-011, FB-ENG-005

The wind

From the south (180 degrees) at 13 mph: force 4, a moderate breeze on the Beaufort scale.

Plan of the wind at Boston/Logan INTL, north up: blowing from 180 degrees, the south, at 13 miles an hour; beside it the Beaufort scale from calm to hurricane force, force 4, moderate breeze, marked.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT BOSFIG. C THE WIND AT BOSTON/LOGAN INTLPLAN, NORTH UP: THE WIND AS REPORTED, AND WHERE IT SITS ON THE BEAUFORT SCALENESWTHE STATIONFROM 180°BEAUFORT FORCELEAST WIND, MPH0CALM01LIGHT AIR12LIGHT BREEZE43GENTLE BREEZE84MODERATE BREEZE13NOW, 13 MPH5FRESH BREEZE196STRONG BREEZE257NEAR GALE328GALE399STRONG GALE4710STORM5511VIOLENT STORM6412HURRICANE FORCE73TITLEBoston/Logan INTL, the windSTATION REPORT · ASOS BOSTYPEPLAN north upSCALENOT TO SCALEREVAS REPORTED SHEET 3 of 6DATE2026-10-16IDSR-BOS-3DRAWN AS linework on paperSOURCES FB-EVT-150, FB-ENG-008, FB-INS-002

The full report of Boston/Logan INTL, in 6 sheets, each beside the Field Book plates that explain it

-

Snow on the ground

Elsewhere in Massachusetts

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

Near Cambridge

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

Near Cambridge

River and lake gauges