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Northampton, Massachusetts

City in Hampshire County, Massachusetts

Air quality

The air at Northampton

Index 31, good, led by fine particles. Read at 4 AM from its reporting area, Hampden-Hampshire (MA), 6 miles off.

31Good
  • Fine particles (PM2.5)31Good9.9 mi
  • Ozone17Good3 ppb9.9 mi
  • Coarse particles (PM10)6Good-
  • Nitrogen dioxide10Good11 ppb9.9 mi
  • Sulfur dioxide0Good0.1 ppb14.2 mi

The days ahead

Good each day through Sat Oct 17, led by fine particles. Yesterday measured 28, good.

Smoke, the next 41 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 Northampton

None in the last 3 days, to Fri 3 AM. 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 Northampton, the next 41 hours

Mist or haze: visibility falls to 2 miles Fri 7 PM.

FriSat

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

What is measuring near here

The 6 instruments nearest Northampton, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 0.3 miles away.

measured now4 instruments

measured daily2 instruments

Northampton 1.6 EMA-HS-15

In a volunteer observer's own ground/0.3 mi away/193 ft/12 ft below here

precip, snowfall, snow depth

Rank-

AmherstAHRM3

At a cooperative observer's station/7.1 mi away/154 ft/51 ft below here

snowfall, snow depth, precip, high, low

Rank60of 744

Station report

The weather at Chicopee/Westover, drawn

The nearest airport reporting now, 10.7 mi from Northampton, Massachusetts. From its report of Oct 16, 2026, 4:29 AM local time: 3 of its 6 sheets.

The sky

Broken at 2,800 ft, overcast at 5,000 ft; the ceiling is 2,800 ft; visibility 10 mi or more.

Section of the sky over Chicopee/Westover, height above the station to scale: broken cloud with its base at 2,800 feet, overcast cloud with its base at 5,000 feet, the ceiling at 2,800 feet, and visibility of 10 mi or more.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT CEFFIG. A THE SKY OVER CHICOPEE/WESTOVERSECTION, 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 STATIONTHE CEILOMETER READS TO 12,000 FT, ABOVE THIS SHEETOVC 5,000 FTOVERCAST, 8 EIGHTHS OF THE SKYBKN 2,800 FTBROKEN, 5 TO 7 EIGHTHS OF THE SKYCEILING 2,800 FTVISIBILITY, MILES: 10 MI OR MORE0510TITLEChicopee/Westover, the skySTATION REPORT · ASOS CEFTYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 1 of 6DATE2026-10-16IDSR-CEF-1DRAWN AS linework on paperSOURCES FB-SKY-001, FB-SKY-017, FB-SKY-016, FB-SKY-018

The air

51.8 F with a dew point of 48.2 F, 87 per cent relative humidity. Air lifted from the station would cool to its dew point, where cloud forms, about 800 ft up; the lowest cloud reported is at 2,800 ft.

Chart of the air at Chicopee/Westover: temperature 51.8 degrees Fahrenheit and dew point 48.2, 87 per cent relative humidity; air lifted from the station cools along the dry rate and meets its dew point about 800 feet above the station, against the lowest cloud reported at 2,800 feet; height to scale.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT CEFFIG. B THE AIR AT CHICOPEE/WESTOVERTHE REPORTED TEMPERATURE AND DEW POINT, AND AIR LIFTED FROM THE STATION WITHOUT MIXING UNTIL IT SATURATES; HEIGHT ABOVE THE STATION TO SCALEFT ABOVE THE STATION01,0002,0003,0004,00040 F50 F60 FSATURATES 800 FT ABOVE THE STATION, AT 47.3 FLOWEST CLOUD REPORTED, BKN 2,800 FTTEMPERATURE 51.8 FDEW POINT 48.2 FSPREAD 3.6 FRELATIVE HUMIDITY 87 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 POINTTITLEChicopee/Westover, the airSTATION REPORT · ASOS CEFTYPECHARTSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 2 of 6DATE2026-10-16IDSR-CEF-2DRAWN AS linework on paperSOURCES FB-WAT-020, FB-WAT-002, FB-ENG-011, FB-ENG-005

The wind

Calm.

Plan of the wind at Chicopee/Westover, north up: calm; beside it the Beaufort scale from calm to hurricane force, force 0, calm, marked.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT CEFFIG. C THE WIND AT CHICOPEE/WESTOVERPLAN, NORTH UP: THE WIND AS REPORTED, AND WHERE IT SITS ON THE BEAUFORT SCALENESWTHE STATIONCALMBEAUFORT FORCELEAST WIND, MPH0CALM0NOW, 0 MPH1LIGHT AIR12LIGHT BREEZE43GENTLE BREEZE84MODERATE BREEZE135FRESH BREEZE196STRONG BREEZE257NEAR GALE328GALE399STRONG GALE4710STORM5511VIOLENT STORM6412HURRICANE FORCE73TITLEChicopee/Westover, the windSTATION REPORT · ASOS CEFTYPEPLAN north upSCALENOT TO SCALEREVAS REPORTED SHEET 3 of 6DATE2026-10-16IDSR-CEF-3DRAWN AS linework on paperSOURCES FB-EVT-150, FB-ENG-008, FB-INS-002

The full report of Chicopee/Westover, 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 Northampton

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

Near Northampton

River and lake gauges