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Cold Spring Harbor, New York

Community in Suffolk County, New York

Air quality

The air at Cold Spring Harbor

Index 24, good, led by ozone. Read at 11 PM from its reporting area, Long Island Region (NY), 11 miles off.

24Good
  • Fine particles (PM2.5)20Good20.7 mi
  • Ozone24Good27 ppb9.6 mi
  • Coarse particles (PM10)-24.7 mi
  • Nitrogen dioxide1Good1.3 ppb18.2 mi
  • Sulfur dioxide0Good0 ppb24.7 mi

The days ahead

Good each day through Today, led by fine particles. Yesterday measured 51, moderate.

Smoke, the next 45 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 Cold Spring Harbor

None in the last 24 hours; 0.01 in over the last 3 days, to Thu 11 PM. Measured by radar and rain gauges, as water.

Last 24 hours
0.00in
Last 3 days
0.01in

Visibility

How far you can see at Cold Spring Harbor, the next 45 hours

Mist or haze: visibility falls to 1 miles Fri 8 PM.

FriSat

On the radar over Cold Spring Harbor, New YorkReflectivityStorm topsRain rateRain, last 24 hoursForecast temperatureForecast rain totalEvery picture

What is measuring near here

The 6 instruments nearest Cold Spring Harbor, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 2.4 miles away.

measured now4 instruments

measured daily2 instruments

Huntington 0.8 NNWNY-SF-160

In a volunteer observer's own ground/2.4 mi away/129 ft/7 ft above here

precip, snowfall, snow depth

Rank-

SyossetSYON6

At a cooperative observer's station/3.8 mi away/251 ft/129 ft above here

snowfall, snow depth, precip, high, low

Rank28of 1,432

Station report

The weather at Farmingdale/Republc, drawn

The nearest airport reporting now, 9.7 mi from Cold Spring Harbor, New York. From its report of Oct 15, 2026, 11:53 PM local time: 3 of its 6 sheets.

The sky

No cloud below 12,000 ft; visibility 10 mi or more.

Section of the sky over Farmingdale/Republc, height above the station to scale: no cloud detected below 12,000 feet, the reach of its ceilometer, and visibility of 10 mi or more.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT FRGFIG. A THE SKY OVER FARMINGDALE/REPUBLCSECTION, 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 STATION05001,0001,5002,0002,5003,000ETAGESLOWTHE STATIONTHE CEILOMETER READS TO 12,000 FT, ABOVE THIS SHEETNO CLOUD DETECTED BELOW 12,000 FTVISIBILITY, MILES: 10 MI OR MORE0510TITLEFarmingdale/Republc, the skySTATION REPORT · ASOS FRGTYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 1 of 6DATE2026-10-16IDSR-FRG-1DRAWN AS linework on paperSOURCES FB-SKY-001

The air

57.0 F with a dew point of 47.0 F, 69 per cent relative humidity. Air lifted from the station would cool to its dew point, where cloud forms, about 2,300 ft up.

Chart of the air at Farmingdale/Republc: temperature 57.0 degrees Fahrenheit and dew point 47.0, 69 per cent relative humidity; air lifted from the station cools along the dry rate and meets its dew point about 2,300 feet above the station; height to scale.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT FRGFIG. B THE AIR AT FARMINGDALE/REPUBLCTHE REPORTED TEMPERATURE AND DEW POINT, AND AIR LIFTED FROM THE STATION WITHOUT MIXING UNTIL IT SATURATES; HEIGHT ABOVE THE STATION TO SCALEFT ABOVE THE STATION01,0002,0003,00030 F40 F50 F60 F70 FSATURATES 2,300 FT ABOVE THE STATION, AT 44.7 FTEMPERATURE 57.0 FDEW POINT 47.0 FSPREAD 10.0 FRELATIVE HUMIDITY 69 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 POINTTITLEFarmingdale/Republc, the airSTATION REPORT · ASOS FRGTYPECHARTSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 2 of 6DATE2026-10-16IDSR-FRG-2DRAWN AS linework on paperSOURCES FB-WAT-002, FB-ENG-011, FB-ENG-005

The wind

From the east southeast (110 degrees) at 3 mph: force 1, a light air on the Beaufort scale. The strongest gust today was 28 mph.

Plan of the wind at Farmingdale/Republc, north up: blowing from 110 degrees, the east southeast, 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 FRGFIG. C THE WIND AT FARMINGDALE/REPUBLCPLAN, NORTH UP: THE WIND AS REPORTED, AND WHERE IT SITS ON THE BEAUFORT SCALENESWTHE STATIONFROM 110°BEAUFORT FORCELEAST WIND, MPH0CALM01LIGHT AIR1NOW, 3 MPH2LIGHT BREEZE43GENTLE BREEZE84MODERATE BREEZE135FRESH BREEZE196STRONG BREEZE257NEAR GALE328GALE399STRONG GALE4710STORM5511VIOLENT STORM6412HURRICANE FORCE73TITLEFarmingdale/Republc, the windSTATION REPORT · ASOS FRGTYPEPLAN north upSCALENOT TO SCALEREVAS REPORTED SHEET 3 of 6DATE2026-10-16IDSR-FRG-3DRAWN AS linework on paperSOURCES FB-EVT-150, FB-ENG-008, FB-INS-002

The full report of Farmingdale/Republc, in 6 sheets, each beside the Field Book plates that explain it

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Snow on the ground

Elsewhere in New York

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

Near Cold Spring Harbor

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

Near Cold Spring Harbor

River and lake gauges