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Hempstead, New York

Village in Nassau County, New York

Air quality

The air at Hempstead

Index 26, good, led by ozone. Read at 4 AM from its reporting area, Long Island Region (NY), 4 miles off.

26Good
  • Fine particles (PM2.5)18Good10.5 mi
  • Ozone26Good27 ppb11.3 mi
  • Nitrogen dioxide4Good4 ppb20.6 mi
  • Carbon monoxide-0.1 ppm20.6 mi

The days ahead

Good each day through Today, led by fine particles. Yesterday measured 23, good.

Smoke, the next 41 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 Hempstead

None in the last 3 days, to Fri 3 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 Hempstead, the next 41 hours

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

FriSat

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

What is measuring near here

The 6 instruments nearest 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/5.4 mi away/328 ft/267 ft above here

temp, pavement temp, wind, visibility, precip

Rank1,057of 1,432

measured daily2 instruments

Garden City 1.4 ENY-NS-39

In a volunteer observer's own ground/1.1 mi away/68 ft/7 ft above here

precip, snowfall, snow depth

Rank-

SyossetSYON6

At a cooperative observer's station/10.4 mi away/251 ft/190 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, 8.9 mi from Hempstead, New York. From its report of Oct 16, 2026, 4:51 AM local time: 3 of its 6 sheets.

The sky

A few clouds at 2,500 ft, overcast at 4,200 ft; the ceiling is 4,200 ft; visibility 10 mi or more.

Section of the sky over New York/Jf Kennedy, height above the station to scale: a few clouds cloud with its base at 2,500 feet, overcast cloud with its base at 4,200 feet, the ceiling at 4,200 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 STATION01,0002,0003,0004,0005,0006,0007,000ETAGESLOWMIDDLETHE STATIONTHE CEILOMETER READS TO 12,000 FT, ABOVE THIS SHEETOVC 4,200 FTOVERCAST, 8 EIGHTHS OF THE SKYFEW 2,500 FTA FEW CLOUDS, 1 TO 2 EIGHTHS OF THE SKYCEILING 4,200 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

The air

62.0 F with a dew point of 56.0 F, 81 per cent relative humidity. Air lifted from the station would cool to its dew point, where cloud forms, about 1,400 ft up; the lowest cloud reported is at 2,500 ft.

Chart of the air at New York/Jf Kennedy: temperature 62.0 degrees Fahrenheit and dew point 56.0, 81 per cent relative humidity; air lifted from the station cools along the dry rate and meets its dew point about 1,400 feet above the station, against the lowest cloud reported at 2,500 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 1,400 FT ABOVE THE STATION, AT 54.6 FLOWEST CLOUD REPORTED, FEW 2,500 FTTEMPERATURE 62.0 FDEW POINT 56.0 FSPREAD 6.0 FRELATIVE HUMIDITY 81 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 14 mph: force 4, a moderate breeze on the Beaufort scale.

Plan of the wind at New York/Jf Kennedy, north up: blowing from 160 degrees, the south southeast, at 14 miles an hour; beside it the Beaufort scale from calm to hurricane force, force 4, moderate 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 BREEZE84MODERATE BREEZE13NOW, 14 MPH5FRESH 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 Hempstead

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

Near Hempstead

River and lake gauges