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South Hempstead, New York

Community in Nassau County, New York

Air quality

The air at South Hempstead

Index 18, good, led by fine particles. Read at 2 AM from its reporting area, Long Island Region (NY), 6 miles off.

18Good
  • Fine particles (PM2.5)18Good11.1 mi
  • Ozone18Good24 ppb11.8 mi
  • Nitrogen dioxide4Good4 ppb21.7 mi
  • Sulfur dioxide0Good0 ppb23.7 mi
  • Carbon monoxide-0.1 ppm21.7 mi

The days ahead

Good each day through Today, led by fine particles. Yesterday measured 11, good.

Smoke, the next 43 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 South Hempstead

None in the last 3 days, to Fri 1 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 South Hempstead, the next 43 hours

Mist or haze: visibility falls to 2 miles Fri 10 AM.

FriSat

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

What is measuring near here

The 6 instruments nearest South Hempstead, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 1.1 miles away.

measured now4 instruments

SchodackNY003

Beside a road/7.1 mi away/328 ft/282 ft above here

temp, pavement temp, wind, visibility, precip

Rank1,057of 1,432

measured daily2 instruments

Rockville Centre 0.7 NNY-NS-20

In a volunteer observer's own ground/1.1 mi away/34 ft/12 ft below here

precip, snowfall, snow depth

Rank-

SyossetSYON6

At a cooperative observer's station/11.8 mi away/251 ft/205 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, 8.0 mi from South Hempstead, New York. From its report of Oct 16, 2026, 1:51 AM local time: 3 of its 6 sheets.

The sky

Broken at 3,300 ft, broken at 5,500 ft, overcast at 8,000 ft; the ceiling is 3,300 ft; visibility 10 mi or more.

Section of the sky over New York/Jf Kennedy, height above the station to scale: broken cloud with its base at 3,300 feet, broken cloud with its base at 5,500 feet, overcast cloud with its base at 8,000 feet, the ceiling at 3,300 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 STATION02,5005,0007,50010,00012,500ETAGESLOWMIDDLETHE STATIONTHE CEILOMETER READS TO 12,000 FTOVC 8,000 FTOVERCAST, 8 EIGHTHS OF THE SKYBKN 5,500 FTBROKEN, 5 TO 7 EIGHTHS OF THE SKYBKN 3,300 FTBROKEN, 5 TO 7 EIGHTHS OF THE SKYCEILING 3,300 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

The air

61.0 F with a dew point of 52.0 F, 72 per cent relative humidity. Air lifted from the station would cool to its dew point, where cloud forms, about 2,100 ft up; the lowest cloud reported is at 3,300 ft.

Chart of the air at New York/Jf Kennedy: temperature 61.0 degrees Fahrenheit and dew point 52.0, 72 per cent relative humidity; air lifted from the station cools along the dry rate and meets its dew point about 2,100 feet above the station, against the lowest cloud reported at 3,300 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 STATION01,0002,0003,0004,0005,00040 F50 F60 F70 FSATURATES 2,100 FT ABOVE THE STATION, AT 50.0 FLOWEST CLOUD REPORTED, BKN 3,300 FTTEMPERATURE 61.0 FDEW POINT 52.0 FSPREAD 9.0 FRELATIVE HUMIDITY 72 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 10 mph: force 3, a gentle breeze on the Beaufort scale.

Plan of the wind at New York/Jf Kennedy, north up: blowing from 160 degrees, the south southeast, at 10 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, 10 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 South Hempstead

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

Near South Hempstead

River and lake gauges