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Watchung, New Jersey

Borough in Somerset County, New Jersey

Air quality

The air at Watchung

Index 27, good, led by fine particles. Read at 12 AM from its reporting area, North Central (NJ), 13 miles off.

27Good
  • Fine particles (PM2.5)27Good9.4 mi
  • Ozone19Good10 ppb12.3 mi
  • Nitrogen dioxide8Good9 ppb12.3 mi
  • Sulfur dioxide0Good0 ppb12.7 mi
  • Carbon monoxide-0.2 ppm12.7 mi

The days ahead

Good each day through Today, led by ozone. Yesterday measured 55, 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 Watchung

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

Last 24 hours
0.00in
Last 3 days
0.00in

Visibility

How far you can see at Watchung, the next 45 hours

Mist or haze: visibility falls to 1 mile Fri 9 AM.

FriSat

On the radar over Watchung, New JerseyReflectivityStorm topsRain rateRain, last 24 hoursForecast temperatureForecast rain totalEvery picture

What is measuring near here

The 5 instruments nearest Watchung, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 0.5 miles away.

measured now3 instruments

LindenLDJ

At an airfield/10.7 mi away/23 ft/246 ft below here

temp, wind, gust, visibility, precip, pressure

Rank481of 737

measured daily2 instruments

Watchung 0.8 WNWNJ-SM-77

In a volunteer observer's own ground/0.5 mi away/514 ft/245 ft above here

precip, snowfall, snow depth

Rank-

Canoe BrookCHMN4

At a cooperative observer's station/8.4 mi away/188 ft/81 ft below here

snowfall, snow depth, precip, high, low

Rank-

Station report

The weather at Linden, drawn

The nearest airport reporting now, 10.7 mi from Watchung, New Jersey. From its report of Oct 16, 2026, 12:15 AM local time: 3 of its 6 sheets.

The sky

Scattered at 6,000 ft, scattered at 8,000 ft, broken at 10,000 ft; the ceiling is 10,000 ft; visibility 10 mi or more.

Section of the sky over Linden, height above the station to scale: scattered cloud with its base at 6,000 feet, scattered cloud with its base at 8,000 feet, broken cloud with its base at 10,000 feet, the ceiling at 10,000 feet, and visibility of 10 mi or more.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT LDJFIG. A THE SKY OVER LINDENSECTION, 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 STATION02,5005,0007,50010,00012,50015,000ETAGESLOWMIDDLETHE STATIONTHE CEILOMETER READS TO 12,000 FTBKN 10,000 FTBROKEN, 5 TO 7 EIGHTHS OF THE SKYSCT 8,000 FTSCATTERED, 3 TO 4 EIGHTHS OF THE SKYSCT 6,000 FTSCATTERED, 3 TO 4 EIGHTHS OF THE SKYCEILING 10,000 FTVISIBILITY, MILES: 10 MI OR MORE0510TITLELinden, the skySTATION REPORT · ASOS LDJTYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 1 of 6DATE2026-10-16IDSR-LDJ-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

58.6 F with a dew point of 50.0 F, 73 per cent relative humidity. Air lifted from the station would cool to its dew point, where cloud forms, about 2,000 ft up; the lowest cloud reported is at 6,000 ft.

Chart of the air at Linden: temperature 58.6 degrees Fahrenheit and dew point 50.0, 73 per cent relative humidity; air lifted from the station cools along the dry rate and meets its dew point about 2,000 feet above the station, against the lowest cloud reported at 6,000 feet; height to scale.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT LDJFIG. B THE AIR AT LINDENTHE REPORTED TEMPERATURE AND DEW POINT, AND AIR LIFTED FROM THE STATION WITHOUT MIXING UNTIL IT SATURATES; HEIGHT ABOVE THE STATION TO SCALEFT ABOVE THE STATION01,0002,0003,0004,0005,0006,0007,0008,00040 F50 F60 F70 FSATURATES 2,000 FT ABOVE THE STATION, AT 48.0 FLOWEST CLOUD REPORTED, SCT 6,000 FTTEMPERATURE 58.6 FDEW POINT 50.0 FSPREAD 8.6 FRELATIVE HUMIDITY 73 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 POINTTITLELinden, the airSTATION REPORT · ASOS LDJTYPECHARTSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 2 of 6DATE2026-10-16IDSR-LDJ-2DRAWN AS linework on paperSOURCES FB-WAT-002, FB-ENG-011, FB-ENG-005

The wind

Calm.

Plan of the wind at Linden, north up: calm; beside it the Beaufort scale from calm to hurricane force, force 0, calm, marked.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT LDJFIG. C THE WIND AT LINDENPLAN, NORTH UP: THE WIND AS REPORTED, AND WHERE IT SITS ON THE BEAUFORT SCALENESWTHE STATIONCALMBEAUFORT FORCELEAST WIND, MPH0CALM0NOW, 0 MPH1LIGHT AIR12LIGHT BREEZE43GENTLE BREEZE84MODERATE BREEZE135FRESH BREEZE196STRONG BREEZE257NEAR GALE328GALE399STRONG GALE4710STORM5511VIOLENT STORM6412HURRICANE FORCE73TITLELinden, the windSTATION REPORT · ASOS LDJTYPEPLAN north upSCALENOT TO SCALEREVAS REPORTED SHEET 3 of 6DATE2026-10-16IDSR-LDJ-3DRAWN AS linework on paperSOURCES FB-EVT-150, FB-ENG-008, FB-INS-002

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

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Snow on the ground

Elsewhere in New Jersey

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

Near Watchung

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

Near Watchung

River and lake gauges