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Collinsville, Connecticut

Community in Hartford County, Connecticut

Air quality

The air at Collinsville

Index 45, good, led by fine particles. Read at 6 PM from its reporting area, Hartford (CT), 15 miles off.

45Good
  • Fine particles (PM2.5)45Good12.8 mi
  • Ozone22Good23 ppb15.1 mi
  • Coarse particles (PM10)15Good12.8 mi
  • Nitrogen dioxide19Good20 ppb12.8 mi
  • Sulfur dioxide0Good0 ppb19.8 mi
  • Carbon monoxide-0.4 ppm12.8 mi

The days ahead

Good each day through Mon Oct 19, led by fine particles. Yesterday measured 29, good.

Smoke, the next 45 hours

No smoke near the ground through Sun 2 PM.

FriSatSun

Precipitation

What has fallen at Collinsville

0.34 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
0.34in
Last 3 days
0.34in

Visibility

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

Visibility stays 5 miles or more through Sun 2 PM, lowest 6 miles Fri 7 PM.

FriSatSun

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

What is measuring near here

The 6 instruments nearest Collinsville, 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

Plainville4B8

At an airfield/9.4 mi away/200 ft/110 ft below here

temp, wind, gust, visibility, precip, pressure

Rank183of 375

measured daily2 instruments

Canton 1.5 WCT-HR-70

In a volunteer observer's own ground/0.6 mi away/320 ft/10 ft above here

precip, snowfall, snow depth

Rank280of 375

Station report

The weather at Plainville, drawn

The nearest airport reporting now, 9.4 mi from Collinsville, Connecticut. From its report of Oct 16, 2026, 6:15 PM local time: 3 of its 6 sheets.

The sky

Overcast at 4,800 ft; the ceiling is 4,800 ft; visibility 9 mi.

Section of the sky over Plainville, height above the station to scale: overcast cloud with its base at 4,800 feet, the ceiling at 4,800 feet, and visibility of 9 mi.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT 4B8FIG. A THE SKY OVER PLAINVILLESECTION, 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 4,800 FTOVERCAST, 8 EIGHTHS OF THE SKYCEILING 4,800 FTVISIBILITY, MILES: 9 MI0510TITLEPlainville, the skySTATION REPORT · ASOS 4B8TYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 1 of 6DATE2026-10-16IDSR-4B8-1DRAWN 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 65.7 F, 92 per cent relative humidity. Air lifted from the station would cool to its dew point, where cloud forms, about 500 ft up; the lowest cloud reported is at 4,800 ft.

Chart of the air at Plainville: temperature 68.0 degrees Fahrenheit and dew point 65.7, 92 per cent relative humidity; air lifted from the station cools along the dry rate and meets its dew point about 500 feet above the station, against the lowest cloud reported at 4,800 feet; height to scale.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT 4B8FIG. B THE AIR AT PLAINVILLETHE REPORTED TEMPERATURE AND DEW POINT, AND AIR LIFTED FROM THE STATION WITHOUT MIXING UNTIL IT SATURATES; HEIGHT ABOVE THE STATION TO SCALEFT ABOVE THE STATION01,0002,0003,0004,00050 F60 F70 F80 FSATURATES 500 FT ABOVE THE STATION, AT 65.1 FABOVE THIS SHEET: LOWEST CLOUD REPORTED, OVC 4,800 FTTEMPERATURE AND DEW POINT 68.0 F, 65.7 FRELATIVE HUMIDITY 92 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 POINTTITLEPlainville, the airSTATION REPORT · ASOS 4B8TYPECHARTSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 2 of 6DATE2026-10-16IDSR-4B8-2DRAWN AS linework on paperSOURCES FB-WAT-020, FB-WAT-002, FB-ENG-011, FB-ENG-005

The wind

From the south (180 degrees) at 7 mph: force 2, a light breeze on the Beaufort scale.

Plan of the wind at Plainville, north up: blowing from 180 degrees, the south, at 7 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 4B8FIG. C THE WIND AT PLAINVILLEPLAN, NORTH UP: THE WIND AS REPORTED, AND WHERE IT SITS ON THE BEAUFORT SCALENESWTHE STATIONFROM 180°BEAUFORT FORCELEAST WIND, MPH0CALM01LIGHT AIR12LIGHT BREEZE4NOW, 7 MPH3GENTLE BREEZE84MODERATE BREEZE135FRESH BREEZE196STRONG BREEZE257NEAR GALE328GALE399STRONG GALE4710STORM5511VIOLENT STORM6412HURRICANE FORCE73TITLEPlainville, the windSTATION REPORT · ASOS 4B8TYPEPLAN north upSCALENOT TO SCALEREVAS REPORTED SHEET 3 of 6DATE2026-10-16IDSR-4B8-3DRAWN AS linework on paperSOURCES FB-EVT-150, FB-ENG-008, FB-INS-002

The full report of Plainville, 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 Collinsville

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

Near Collinsville

River and lake gauges