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Hewlett, New York

Community in Nassau County, New York

Air quality

The air at Hewlett

Index 19, good, led by fine particles. Read at 10 PM from its reporting area, Long Island Region (NY), 10 miles off.

19Good
  • Fine particles (PM2.5)19Good9.2 mi
  • Ozone19Good24 ppb16.1 mi
  • Nitrogen dioxide4Good4 ppb20.2 mi
  • Sulfur dioxide0Good0 ppb20.2 mi
  • Carbon monoxide-0.9 ppm20.2 mi

The days ahead

Good each day through Fri Oct 16, led by fine particles. Yesterday measured 51, moderate.

Smoke, the next 41 hours

Little smoke near the ground through Sat 2 PM: the index from smoke stays at 6 or under.

FriSat

Precipitation

What has fallen at Hewlett

None in the last 24 hours; 0.01 in over the last 3 days, to Thu 9 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 Hewlett, the next 41 hours

Visibility stays 3 miles or more through Sat 2 PM, lowest 4 miles Sat 4 AM.

FriSat

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

What is measuring near here

The 6 instruments nearest Hewlett, 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

SchodackNY003

Beside a road/11.1 mi away/328 ft/295 ft above here

temp, pavement temp, wind, visibility, precip

Rank1,057of 1,432

measured daily2 instruments

Lynbrook 0.6 SSENY-NS-21

In a volunteer observer's own ground/1.4 mi away/22 ft/11 ft below here

precip, snowfall, snow depth

Rank-

SyossetSYON6

At a cooperative observer's station/16.4 mi away/251 ft/218 ft above here

snowfall, snow depth, precip, high, low

Rank28of 1,432

Station report

The weather at New York/Jf Kennedy, drawn

The nearest airport reporting now, 3.5 mi from Hewlett, New York. From its report of Oct 15, 2026, 9:51 PM local time: 3 of its 6 sheets.

The sky

Scattered at 2,800 ft, broken at 14,000 ft, broken at 25,000 ft; the ceiling is 14,000 ft; visibility 10 mi or more.

Section of the sky over New York/Jf Kennedy, height above the station to scale: scattered cloud with its base at 2,800 feet, broken cloud with its base at 14,000 feet, broken cloud with its base at 25,000 feet, the ceiling at 14,000 feet, and visibility of 10 mi or more.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT JFKFIG. A THE SKY OVER NEW YORK/JF KENNEDYSECTION, 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 STATION05,00010,00015,00020,00025,00030,00035,00040,000ETAGESLOWMIDDLEHIGHTHE STATIONTHE CEILOMETER READS TO 12,000 FTBKN 25,000 FTBROKEN, 5 TO 7 EIGHTHS OF THE SKYBKN 14,000 FTBROKEN, 5 TO 7 EIGHTHS OF THE SKYSCT 2,800 FTSCATTERED, 3 TO 4 EIGHTHS OF THE SKYCEILING 14,000 FTVISIBILITY, MILES: 10 MI OR MORE0510TITLENew York/Jf Kennedy, the skySTATION REPORT · ASOS JFKTYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 1 of 6DATE2026-10-16IDSR-JFK-1DRAWN AS linework on paperSOURCES FB-SKY-001, FB-SKY-017, FB-SKY-016, FB-SKY-018, FB-SKY-013, FB-SKY-014, FB-SKY-010, FB-SKY-011, FB-SKY-012

The air

59.0 F with a dew point of 49.0 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; the lowest cloud reported is at 2,800 ft.

Chart of the air at New York/Jf Kennedy: temperature 59.0 degrees Fahrenheit and dew point 49.0, 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, against the lowest cloud reported at 2,800 feet; height to scale.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT JFKFIG. B THE AIR AT NEW YORK/JF KENNEDYTHE REPORTED TEMPERATURE AND DEW POINT, AND AIR LIFTED FROM THE STATION WITHOUT MIXING UNTIL IT SATURATES; HEIGHT ABOVE THE STATION TO SCALEFT ABOVE THE STATION01,0002,0003,0004,00040 F50 F60 F70 FSATURATES 2,300 FT ABOVE THE STATION, AT 46.7 FLOWEST CLOUD REPORTED, SCT 2,800 FTTEMPERATURE 59.0 FDEW POINT 49.0 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 POINTTITLENew York/Jf Kennedy, the airSTATION REPORT · ASOS JFKTYPECHARTSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 2 of 6DATE2026-10-16IDSR-JFK-2DRAWN AS linework on paperSOURCES FB-WAT-002, FB-ENG-011, FB-ENG-005

The wind

From the south southeast (160 degrees) at 8 mph: force 3, a gentle breeze on the Beaufort scale. The strongest gust today was 30 mph.

Plan of the wind at New York/Jf Kennedy, north up: blowing from 160 degrees, the south southeast, at 8 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 JFKFIG. C THE WIND AT NEW YORK/JF KENNEDYPLAN, NORTH UP: THE WIND AS REPORTED, AND WHERE IT SITS ON THE BEAUFORT SCALENESWTHE STATIONFROM 160°BEAUFORT FORCELEAST WIND, MPH0CALM01LIGHT AIR12LIGHT BREEZE43GENTLE BREEZE8NOW, 8 MPH4MODERATE BREEZE135FRESH BREEZE196STRONG BREEZE257NEAR GALE328GALE399STRONG GALE4710STORM5511VIOLENT STORM6412HURRICANE FORCE73TITLENew York/Jf Kennedy, the windSTATION REPORT · ASOS JFKTYPEPLAN north upSCALENOT TO SCALEREVAS REPORTED SHEET 3 of 6DATE2026-10-16IDSR-JFK-3DRAWN AS linework on paperSOURCES FB-EVT-150, FB-ENG-008, FB-INS-002

The full report of New York/Jf Kennedy, in 6 sheets, each beside the Field Book plates that explain it

-

Snow on the ground

Elsewhere in New York

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

Near Hewlett

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

Near Hewlett

River and lake gauges