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West Haven, Connecticut

City in New Haven County, Connecticut

Air quality

The air at West Haven

Index 39, good, led by fine particles. Read at 12 AM from its reporting area, New Haven (CT), 5 miles off.

39Good
  • Fine particles (PM2.5)39Good3.7 mi
  • Ozone19Good21 ppb3.7 mi
  • Coarse particles (PM10)13Good3.7 mi
  • Nitrogen dioxide4Good4.4 ppb3.7 mi
  • Sulfur dioxide0Good0 ppb3.7 mi
  • Carbon monoxide-0.3 ppm3.7 mi

The days ahead

Good each day through Mon Oct 19, led by fine particles. Yesterday measured 11, good.

Smoke, the next 45 hours

No smoke near the ground through Sun 8 PM.

SatSun

Precipitation

What has fallen at West Haven

0.46 in in the last 24 hours, and none in the 2 days before, to Fri 11 PM. Measured by radar and rain gauges, as water.

Last 24 hours
0.46in
Last 3 days
0.46in

Visibility

How far you can see at West Haven, the next 45 hours

Visibility stays 10 miles or more through Sun 8 PM.

SatSun

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

What is measuring near here

The 6 instruments nearest West Haven, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 1.3 miles away.

measured now4 instruments

New HavenNDBC-NWHC3

At a river or reservoir gauge/2.8 mi away/-/- ft from here

temp, wind, gust, humidity, pressure

Rank337of 378

measured daily2 instruments

West Haven 1.2 SCT-NH-82

In a volunteer observer's own ground/1.3 mi away/155 ft/73 ft above here

precip, snowfall, snow depth

Rank-

AnsoniaANSC3

At a cooperative observer's station/7.6 mi away/177 ft/95 ft above here

snowfall, snow depth, precip, high, low

Rank-

Station report

The weather at New Haven/Tweed, drawn

The nearest airport reporting now, 3.9 mi from West Haven, Connecticut. From its report of Oct 16, 2026, 11:53 PM local time: 3 of its 6 sheets.

The sky

A few clouds at 3,600 ft, overcast at 10,000 ft; the ceiling is 10,000 ft; visibility 10 mi or more.

Section of the sky over New Haven/Tweed, height above the station to scale: a few clouds cloud with its base at 3,600 feet, overcast cloud with its base at 10,000 feet, the ceiling at 10,000 feet, and visibility of 10 mi or more.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT HVNFIG. A THE SKY OVER NEW HAVEN/TWEEDSECTION, 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 10,000 FTOVERCAST, 8 EIGHTHS OF THE SKYFEW 3,600 FTA FEW CLOUDS, 1 TO 2 EIGHTHS OF THE SKYCEILING 10,000 FTVISIBILITY, MILES: 10 MI OR MORE0510TITLENew Haven/Tweed, the skySTATION REPORT · ASOS HVNTYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 1 of 6DATE2026-10-17IDSR-HVN-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

62.0 F with a dew point of 57.0 F, 84 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 3,600 ft.

Chart of the air at New Haven/Tweed: temperature 62.0 degrees Fahrenheit and dew point 57.0, 84 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 3,600 feet; height to scale.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT HVNFIG. B THE AIR AT NEW HAVEN/TWEEDTHE 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 F70 FSATURATES 1,200 FT ABOVE THE STATION, AT 55.8 FLOWEST CLOUD REPORTED, FEW 3,600 FTTEMPERATURE 62.0 FDEW POINT 57.0 FSPREAD 5.0 FRELATIVE HUMIDITY 84 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 POINTTITLENew Haven/Tweed, the airSTATION REPORT · ASOS HVNTYPECHARTSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 2 of 6DATE2026-10-17IDSR-HVN-2DRAWN AS linework on paperSOURCES FB-WAT-002, FB-ENG-011, FB-ENG-005

The wind

From the north northwest (340 degrees) at 14 mph, gusting 26 mph: force 4, a moderate breeze on the Beaufort scale. The strongest gust today was 26 mph.

Plan of the wind at New Haven/Tweed, north up: blowing from 340 degrees, the north northwest, at 14 miles an hour, gusting 26; beside it the Beaufort scale from calm to hurricane force, force 4, moderate breeze, marked.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT HVNFIG. C THE WIND AT NEW HAVEN/TWEEDPLAN, NORTH UP: THE WIND AS REPORTED, AND WHERE IT SITS ON THE BEAUFORT SCALENESWTHE STATIONFROM 340°BEAUFORT FORCELEAST WIND, MPH0CALM01LIGHT AIR12LIGHT BREEZE43GENTLE BREEZE84MODERATE BREEZE13NOW, 14 MPH5FRESH BREEZE196STRONG BREEZE25GUST, 26 MPH7NEAR GALE328GALE399STRONG GALE4710STORM5511VIOLENT STORM6412HURRICANE FORCE73TITLENew Haven/Tweed, the windSTATION REPORT · ASOS HVNTYPEPLAN north upSCALENOT TO SCALEREVAS REPORTED SHEET 3 of 6DATE2026-10-17IDSR-HVN-3DRAWN AS linework on paperSOURCES FB-EVT-150, FB-ENG-008, FB-INS-002

The full report of New Haven/Tweed, 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 West Haven

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

Near West Haven

River and lake gauges