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Henderson, New York

Community in Jefferson County, New York

Air quality

The air at Henderson

Index 20, good, led by ozone. Read at 12 AM from its reporting area, Eastern Lake Ontario Region (NY), 39 miles off.

20Good
  • Fine particles (PM2.5)19Good-
  • Ozone20Good17 ppb19.6 mi

The days ahead

Good each day through Today, led by fine particles. Yesterday measured 20, good.

Smoke, the next 44 hours

No smoke near the ground through Sat 8 PM.

FriSat

Precipitation

What has fallen at Henderson

None in the last 24 hours; 2.45 in over the last 3 days, to Fri 12 AM. Measured by radar and rain gauges, as water.

Last 24 hours
0.00in
Last 3 days
2.45in

Visibility

How far you can see at Henderson, the next 44 hours

Mist or haze: visibility falls to 1 miles Fri 7 AM.

FriSat

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

What is measuring near here

The 5 instruments nearest Henderson, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 7.4 miles away.

measured now3 instruments

measured daily2 instruments

Adams 3.4 SWNY-JF-46

In a volunteer observer's own ground/7.5 mi away/521 ft/152 ft above here

precip, snowfall, snow depth

Rank-

WatertownWTTN6

At a cooperative observer's station/17.9 mi away/481 ft/112 ft above here

snowfall, snow depth, precip, high, low

Rank-

Station report

The weather at Watertown INTL Arpt, drawn

The nearest airport reporting now, 12.6 mi from Henderson, New York. From its report of Oct 15, 2026, 11:56 PM local time: 3 of its 6 sheets.

The sky

Broken at 12,000 ft; the ceiling is 12,000 ft; visibility 10 mi or more.

Section of the sky over Watertown INTL Arpt, height above the station to scale: broken cloud with its base at 12,000 feet, the ceiling at 12,000 feet, and visibility of 10 mi or more.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT ARTFIG. A THE SKY OVER WATERTOWN INTL ARPTSECTION, 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 STATION02,5005,0007,50010,00012,50015,00017,50020,000ETAGESLOWMIDDLEHIGHTHE STATIONTHE CEILOMETER READS TO 12,000 FTBKN 12,000 FTBROKEN, 5 TO 7 EIGHTHS OF THE SKYCEILING 12,000 FTVISIBILITY, MILES: 10 MI OR MORE0510TITLEWatertown INTL Arpt, the skySTATION REPORT · ASOS ARTTYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 1 of 6DATE2026-10-16IDSR-ART-1DRAWN AS linework on paperSOURCES FB-SKY-001, FB-SKY-013, FB-SKY-014

The air

48.0 F with a dew point of 41.0 F, 77 per cent relative humidity. Air lifted from the station would cool to its dew point, where cloud forms, about 1,600 ft up; the lowest cloud reported is at 12,000 ft.

Chart of the air at Watertown INTL Arpt: temperature 48.0 degrees Fahrenheit and dew point 41.0, 77 per cent relative humidity; air lifted from the station cools along the dry rate and meets its dew point about 1,600 feet above the station, against the lowest cloud reported at 12,000 feet; height to scale.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT ARTFIG. B THE AIR AT WATERTOWN INTL ARPTTHE REPORTED TEMPERATURE AND DEW POINT, AND AIR LIFTED FROM THE STATION WITHOUT MIXING UNTIL IT SATURATES; HEIGHT ABOVE THE STATION TO SCALEFT ABOVE THE STATION01,0002,0003,0004,0005,0006,0007,00030 F40 F50 F60 FSATURATES 1,600 FT ABOVE THE STATION, AT 39.4 FABOVE THIS SHEET: LOWEST CLOUD REPORTED, BKN 12,000 FTTEMPERATURE 48.0 FDEW POINT 41.0 FSPREAD 7.0 FRELATIVE HUMIDITY 77 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 POINTTITLEWatertown INTL Arpt, the airSTATION REPORT · ASOS ARTTYPECHARTSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 2 of 6DATE2026-10-16IDSR-ART-2DRAWN AS linework on paperSOURCES FB-WAT-002, FB-ENG-011, FB-ENG-005

The wind

From the east northeast (70 degrees) at 5 mph: force 2, a light breeze on the Beaufort scale. The strongest gust today was 18 mph.

Plan of the wind at Watertown INTL Arpt, north up: blowing from 70 degrees, the east northeast, at 5 miles an hour; beside it the Beaufort scale from calm to hurricane force, force 2, light breeze, marked.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT ARTFIG. C THE WIND AT WATERTOWN INTL ARPTPLAN, NORTH UP: THE WIND AS REPORTED, AND WHERE IT SITS ON THE BEAUFORT SCALENESWTHE STATIONFROM 70°BEAUFORT FORCELEAST WIND, MPH0CALM01LIGHT AIR12LIGHT BREEZE4NOW, 5 MPH3GENTLE BREEZE84MODERATE BREEZE135FRESH BREEZE196STRONG BREEZE257NEAR GALE328GALE399STRONG GALE4710STORM5511VIOLENT STORM6412HURRICANE FORCE73TITLEWatertown INTL Arpt, the windSTATION REPORT · ASOS ARTTYPEPLAN north upSCALENOT TO SCALEREVAS REPORTED SHEET 3 of 6DATE2026-10-16IDSR-ART-3DRAWN AS linework on paperSOURCES FB-EVT-150, FB-ENG-008, FB-INS-002

The full report of Watertown INTL Arpt, 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 Henderson

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

Near Henderson

River and lake gauges