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Danielson, Connecticut

Borough in Windham County, Connecticut

Air quality

The air at Danielson

Index 7, good, led by ozone. Read at 8 AM from its reporting area, Western (RI), 11 miles off.

7Good
  • Fine particles (PM2.5)4Good15.8 mi
  • Ozone7Good3 ppb15.8 mi
  • Coarse particles (PM10)-24.1 mi

The days ahead

Good each day through Sun Oct 18, led by ozone. Yesterday measured 27, good.

Smoke, the next 42 hours

No smoke near the ground through Sun 2 AM.

FriSat

Precipitation

What has fallen at Danielson

None in the last 3 days, to Fri 8 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 Danielson, the next 42 hours

Visibility stays 3 miles or more through Sun 2 AM, lowest 4 miles Fri 7 PM.

FriSat

On the radar over Danielson, ConnecticutReflectivityStorm topsRain rateRain, last 24 hoursForecast temperatureForecast rain totalEvery picture

What is measuring near here

The 6 instruments nearest Danielson, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 2.9 miles away.

measured now4 instruments

measured daily2 instruments

HamptonHMTC3

At a cooperative observer's station/9.3 mi away/538 ft/302 ft above here

snowfall, snow depth, precip, high, low

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Station report

The weather at Willimantic (ASOS), drawn

The nearest airport reporting now, 16.1 mi from Danielson, Connecticut. From its report of Oct 16, 2026, 8:52 AM local time: 3 of its 6 sheets.

The sky

Broken at 1,400 ft, broken at 2,600 ft, overcast at 3,300 ft; the ceiling is 1,400 ft; visibility 3 mi.

Section of the sky over Willimantic (ASOS), height above the station to scale: broken cloud with its base at 1,400 feet, broken cloud with its base at 2,600 feet, overcast cloud with its base at 3,300 feet, the ceiling at 1,400 feet, and visibility of 3 mi.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT IJDFIG. A THE SKY OVER WILLIMANTIC (ASOS)SECTION, 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 STATION01,0002,0003,0004,0005,000ETAGESLOWTHE STATIONTHE CEILOMETER READS TO 12,000 FT, ABOVE THIS SHEETOVC 3,300 FTOVERCAST, 8 EIGHTHS OF THE SKYBKN 2,600 FTBROKEN, 5 TO 7 EIGHTHS OF THE SKYBKN 1,400 FTBROKEN, 5 TO 7 EIGHTHS OF THE SKYCEILING 1,400 FTVISIBILITY, MILES: 3 MI0510TITLEWillimantic (ASOS), the skySTATION REPORT · ASOS IJDTYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 1 of 6DATE2026-10-16IDSR-IJD-1DRAWN AS linework on paperSOURCES FB-SKY-001, FB-SKY-017, FB-SKY-016, FB-SKY-018

The air

53.0 F with a dew point of 52.0 F, 96 per cent relative humidity. Air lifted from the station would cool to its dew point, where cloud forms, about 200 ft up; the lowest cloud reported is at 1,400 ft.

Chart of the air at Willimantic (ASOS): temperature 53.0 degrees Fahrenheit and dew point 52.0, 96 per cent relative humidity; air lifted from the station cools along the dry rate and meets its dew point about 200 feet above the station, against the lowest cloud reported at 1,400 feet; height to scale.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT IJDFIG. B THE AIR AT WILLIMANTIC (ASOS)THE REPORTED TEMPERATURE AND DEW POINT, AND AIR LIFTED FROM THE STATION WITHOUT MIXING UNTIL IT SATURATES; HEIGHT ABOVE THE STATION TO SCALEFT ABOVE THE STATION01,0002,0003,00040 F50 F60 FSATURATES 200 FT ABOVE THE STATION, AT 51.8 FLOWEST CLOUD REPORTED, BKN 1,400 FTTEMPERATURE AND DEW POINT 53.0 F, 52.0 FRELATIVE HUMIDITY 96 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 POINTTITLEWillimantic (ASOS), the airSTATION REPORT · ASOS IJDTYPECHARTSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 2 of 6DATE2026-10-16IDSR-IJD-2DRAWN AS linework on paperSOURCES FB-WAT-020, FB-WAT-002, FB-ENG-011, FB-ENG-005

The wind

From the west (270 degrees) at 3 mph: force 1, a light air on the Beaufort scale.

Plan of the wind at Willimantic (ASOS), north up: blowing from 270 degrees, the west, at 3 miles an hour; beside it the Beaufort scale from calm to hurricane force, force 1, light air, marked.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT IJDFIG. C THE WIND AT WILLIMANTIC (ASOS)PLAN, NORTH UP: THE WIND AS REPORTED, AND WHERE IT SITS ON THE BEAUFORT SCALENESWTHE STATIONFROM 270°BEAUFORT FORCELEAST WIND, MPH0CALM01LIGHT AIR1NOW, 3 MPH2LIGHT BREEZE43GENTLE BREEZE84MODERATE BREEZE135FRESH BREEZE196STRONG BREEZE257NEAR GALE328GALE399STRONG GALE4710STORM5511VIOLENT STORM6412HURRICANE FORCE73TITLEWillimantic (ASOS), the windSTATION REPORT · ASOS IJDTYPEPLAN north upSCALENOT TO SCALEREVAS REPORTED SHEET 3 of 6DATE2026-10-16IDSR-IJD-3DRAWN AS linework on paperSOURCES FB-EVT-150, FB-ENG-008, FB-INS-002

The full report of Willimantic (ASOS), in 6 sheets, each beside the Field Book plates that explain it

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Snow on the ground

Elsewhere in Connecticut

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

Near Danielson

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

Near Danielson

River and lake gauges