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Granby, Massachusetts

Community in Hampshire County, Massachusetts

Air quality

The air at Granby

Index 32, good, led by fine particles. Read at 5 PM from its reporting area, Hampden-Hampshire (MA), 6 miles off.

32Good
  • Fine particles (PM2.5)32Good4.7 mi
  • Ozone20Good24 ppb4.7 mi
  • Coarse particles (PM10)12Good-
  • Nitrogen dioxide5Good5 ppb4.7 mi
  • Sulfur dioxide0Good0 ppb10.1 mi

The days ahead

Good each day through Tue Oct 20, led by fine particles. Yesterday measured 28, good.

Smoke, the next 45 hours

No smoke near the ground through Sun 2 PM.

FriSatSun

Precipitation

What has fallen at Granby

0.28 in in the last 24 hours, and none in the 2 days before, to Fri 5 PM. Measured by radar and rain gauges, as water.

Last 24 hours
0.28in
Last 3 days
0.28in

Visibility

How far you can see at Granby, the next 45 hours

Mist or haze: visibility falls to 3 miles Fri 7 PM.

FriSatSun

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

What is measuring near here

The 6 instruments nearest Granby, 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

measured daily2 instruments

Granby 0.5 WSWMA-HS-47

In a volunteer observer's own ground/0.4 mi away/293 ft/33 ft above here

precip, snowfall, snow depth

Rank423of 744

AmherstAHRM3

At a cooperative observer's station/8.9 mi away/154 ft/106 ft below here

snowfall, snow depth, precip, high, low

Rank60of 744

Station report

The weather at Chicopee/Westover, drawn

The nearest airport reporting now, 4.4 mi from Granby, Massachusetts. From its report of Oct 16, 2026, 4:55 PM local time: 3 of its 6 sheets.

The sky

A few clouds at 700 ft, broken at 1,700 ft, overcast at 2,100 ft; the ceiling is 1,700 ft; visibility 7 mi.

Section of the sky over Chicopee/Westover, height above the station to scale: a few clouds cloud with its base at 700 feet, broken cloud with its base at 1,700 feet, overcast cloud with its base at 2,100 feet, the ceiling at 1,700 feet, and visibility of 7 mi.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 STATION05001,0001,5002,0002,5003,0003,500ETAGESLOWTHE STATIONOVC 2,100 FTOVERCAST, 8 EIGHTHS OF THE SKYBKN 1,700 FTBROKEN, 5 TO 7 EIGHTHS OF THE SKYFEW 700 FTA FEW CLOUDS, 1 TO 2 EIGHTHS OF THE SKYCEILING 1,700 FTVISIBILITY, MILES: 7 MI0510TITLEChicopee/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

68.0 F with a dew point of 62.8 F, 83 per cent relative humidity. Air lifted from the station would cool to its dew point, where cloud forms, about 1,200 ft up; the lowest cloud reported is at 700 ft.

Chart of the air at Chicopee/Westover: temperature 68.0 degrees Fahrenheit and dew point 62.8, 83 per cent relative humidity; air lifted from the station cools along the dry rate and meets its dew point about 1,200 feet above the station, against the lowest cloud reported at 700 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 STATION01,0002,0003,00050 F60 F70 F80 FSATURATES 1,200 FT ABOVE THE STATION, AT 61.5 FLOWEST CLOUD REPORTED, FEW 700 FTTEMPERATURE 68.0 FDEW POINT 62.8 FSPREAD 5.2 FRELATIVE HUMIDITY 83 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-002, FB-ENG-011, FB-ENG-005

The wind

From the south (190 degrees) at 10 mph: force 3, a gentle breeze on the Beaufort scale.

Plan of the wind at Chicopee/Westover, north up: blowing from 190 degrees, the south, at 10 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 CEFFIG. C THE WIND AT CHICOPEE/WESTOVERPLAN, NORTH UP: THE WIND AS REPORTED, AND WHERE IT SITS ON THE BEAUFORT SCALENESWTHE STATIONFROM 190°BEAUFORT FORCELEAST WIND, MPH0CALM01LIGHT AIR12LIGHT BREEZE43GENTLE BREEZE8NOW, 10 MPH4MODERATE 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 Granby

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

Near Granby

River and lake gauges