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Hudson, Massachusetts

Community in Middlesex County, Massachusetts

Air quality

The air at Hudson

Index 21, good, led by fine particles. Read at 8 AM from its reporting area, West Middlesex (MA), 10 miles off.

21Good
  • Fine particles (PM2.5)21Good14.4 mi
  • Ozone9Good27 ppb17.5 mi
  • Coarse particles (PM10)-14.4 mi
  • Nitrogen dioxide11Good12 ppb14.4 mi
  • Sulfur dioxide0Good0.1 ppb14.4 mi
  • Carbon monoxide-0.2 ppm14.4 mi

The days ahead

Good each day through Sat Oct 17, led by fine particles. Yesterday measured 26, good.

Smoke, the next 43 hours

No smoke near the ground through Sun 2 AM.

FriSat

Precipitation

What has fallen at Hudson

None in the last 24 hours; 0.18 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
0.18in

Visibility

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

Fog: visibility falls to 0.7 miles Fri 8 PM, under a mile for 1 hour.

FriSat

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

What is measuring near here

The 6 instruments nearest Hudson, 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

FitchburgFIT

At an airfield/14.5 mi away/348 ft/112 ft above here

temp, wind, gust, visibility, precip, pressure

Rank145of 744

measured daily2 instruments

Hudson 0.6 WSWMA-MD-130

In a volunteer observer's own ground/0.6 mi away/222 ft/14 ft below here

precip, snowfall, snow depth

Rank-

MilfordMILM3

At a cooperative observer's station/16.3 mi away/273 ft/37 ft above here

snowfall, snow depth, precip, high, low

Rank56of 744

Station report

The weather at Fitchburg, drawn

The nearest airport reporting now, 14.5 mi from Hudson, Massachusetts. From its report of Oct 16, 2026, 7:52 AM local time: 3 of its 6 sheets.

The sky

Broken at 3,600 ft, broken at 5,000 ft, overcast at 8,500 ft; the ceiling is 3,600 ft; visibility 4 mi.

Section of the sky over Fitchburg, height above the station to scale: broken cloud with its base at 3,600 feet, broken cloud with its base at 5,000 feet, overcast cloud with its base at 8,500 feet, the ceiling at 3,600 feet, and visibility of 4 mi.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT FITFIG. A THE SKY OVER FITCHBURGSECTION, 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 STATION02,5005,0007,50010,00012,50015,000ETAGESLOWMIDDLETHE STATIONTHE CEILOMETER READS TO 12,000 FTOVC 8,500 FTOVERCAST, 8 EIGHTHS OF THE SKYBKN 5,000 FTBROKEN, 5 TO 7 EIGHTHS OF THE SKYBKN 3,600 FTBROKEN, 5 TO 7 EIGHTHS OF THE SKYCEILING 3,600 FTVISIBILITY, MILES: 4 MI0510TITLEFitchburg, the skySTATION REPORT · ASOS FITTYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 1 of 6DATE2026-10-16IDSR-FIT-1DRAWN AS linework on paperSOURCES FB-SKY-001, FB-SKY-017, FB-SKY-016, FB-SKY-018, FB-SKY-013, FB-SKY-014

The air

51.0 F with a dew point of 48.0 F, 89 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 3,600 ft.

Chart of the air at Fitchburg: temperature 51.0 degrees Fahrenheit and dew point 48.0, 89 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 3,600 feet; height to scale.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT FITFIG. B THE AIR AT FITCHBURGTHE REPORTED TEMPERATURE AND DEW POINT, AND AIR LIFTED FROM THE STATION WITHOUT MIXING UNTIL IT SATURATES; HEIGHT ABOVE THE STATION TO SCALEFT ABOVE THE STATION01,0002,0003,0004,0005,00040 F50 F60 FSATURATES 700 FT ABOVE THE STATION, AT 47.3 FLOWEST CLOUD REPORTED, BKN 3,600 FTTEMPERATURE 51.0 FDEW POINT 48.0 FSPREAD 3.0 FRELATIVE HUMIDITY 89 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 POINTTITLEFitchburg, the airSTATION REPORT · ASOS FITTYPECHARTSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 2 of 6DATE2026-10-16IDSR-FIT-2DRAWN AS linework on paperSOURCES FB-WAT-020, FB-WAT-002, FB-ENG-011, FB-ENG-005

The wind

From the south southeast (150 degrees) at 6 mph: force 2, a light breeze on the Beaufort scale.

Plan of the wind at Fitchburg, north up: blowing from 150 degrees, the south southeast, at 6 miles an hour; beside it the Beaufort scale from calm to hurricane force, force 2, light breeze, marked.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT FITFIG. C THE WIND AT FITCHBURGPLAN, NORTH UP: THE WIND AS REPORTED, AND WHERE IT SITS ON THE BEAUFORT SCALENESWTHE STATIONFROM 150°BEAUFORT FORCELEAST WIND, MPH0CALM01LIGHT AIR12LIGHT BREEZE4NOW, 6 MPH3GENTLE BREEZE84MODERATE BREEZE135FRESH BREEZE196STRONG BREEZE257NEAR GALE328GALE399STRONG GALE4710STORM5511VIOLENT STORM6412HURRICANE FORCE73TITLEFitchburg, the windSTATION REPORT · ASOS FITTYPEPLAN north upSCALENOT TO SCALEREVAS REPORTED SHEET 3 of 6DATE2026-10-16IDSR-FIT-3DRAWN AS linework on paperSOURCES FB-EVT-150, FB-ENG-008, FB-INS-002

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

0in

Snow on the ground

Measured at Milford (MILM3), 16.3 miles from here, read 16 Oct, 07:00. measured daily

Elsewhere in Massachusetts

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

Near Hudson

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

Near Hudson

River and lake gauges