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Caldwell, New Jersey

Borough in Essex County, New Jersey

Air quality

The air at Caldwell

Index 21, good, led by fine particles. Read at 3 AM from its reporting area, Northeast Urban (NJ), 11 miles off.

21Good
  • Fine particles (PM2.5)21Good-
  • Ozone20Good-

The days ahead

Highest 55, moderate, Mon Oct 19, led by fine particles. Yesterday measured 39, good.

Smoke, the next 42 hours

No smoke near the ground through Sun 8 PM.

SatSun

Precipitation

What has fallen at Caldwell

0.34 in in the last 24 hours, 0.37 in over the last 3 days, to Sat 2 AM. Measured by radar and rain gauges, as water.

Last 24 hours
0.34in
Last 3 days
0.37in

Visibility

How far you can see at Caldwell, the next 42 hours

Visibility stays 6 miles or more through Sun 8 PM, lowest 6 miles Sat 3 AM.

SatSun

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

What is measuring near here

The 5 instruments nearest Caldwell, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 0.7 miles away.

measured now3 instruments

measured daily2 instruments

Essex Fells 0.2 ENENJ-ES-46

In a volunteer observer's own ground/0.8 mi away/494 ft/112 ft above here

precip, snowfall, snow depth

Rank-

Boonton 1SEBOON4

At a cooperative observer's station/7.1 mi away/292 ft/90 ft below here

snowfall, snow depth, precip, high, low

Rank62of 756

Station report

The weather at Caldwell/Essex Co., drawn

The nearest airport reporting now, 2.6 mi from Caldwell, New Jersey. From its report of Oct 17, 2026, 2:53 AM local time: 3 of its 6 sheets.

The sky

A few clouds at 6,000 ft, broken at 9,000 ft, overcast at 11,000 ft; the ceiling is 9,000 ft; visibility 10 mi or more.

Section of the sky over Caldwell/Essex Co., height above the station to scale: a few clouds cloud with its base at 6,000 feet, broken cloud with its base at 9,000 feet, overcast cloud with its base at 11,000 feet, the ceiling at 9,000 feet, and visibility of 10 mi or more.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT CDWFIG. A THE SKY OVER CALDWELL/ESSEX CO.SECTION, 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 STATION02,5005,0007,50010,00012,50015,00017,500ETAGESLOWMIDDLEHIGHTHE STATIONTHE CEILOMETER READS TO 12,000 FTOVC 11,000 FTOVERCAST, 8 EIGHTHS OF THE SKYBKN 9,000 FTBROKEN, 5 TO 7 EIGHTHS OF THE SKYFEW 6,000 FTA FEW CLOUDS, 1 TO 2 EIGHTHS OF THE SKYCEILING 9,000 FTVISIBILITY, MILES: 10 MI OR MORE0510TITLECaldwell/Essex Co., the skySTATION REPORT · ASOS CDWTYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 1 of 6DATE2026-10-17IDSR-CDW-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

55.0 F with a dew point of 42.0 F, 61 per cent relative humidity. Air lifted from the station would cool to its dew point, where cloud forms, about 3,000 ft up; the lowest cloud reported is at 6,000 ft.

Chart of the air at Caldwell/Essex Co.: temperature 55.0 degrees Fahrenheit and dew point 42.0, 61 per cent relative humidity; air lifted from the station cools along the dry rate and meets its dew point about 3,000 feet above the station, against the lowest cloud reported at 6,000 feet; height to scale.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT CDWFIG. B THE AIR AT CALDWELL/ESSEX CO.THE REPORTED TEMPERATURE AND DEW POINT, AND AIR LIFTED FROM THE STATION WITHOUT MIXING UNTIL IT SATURATES; HEIGHT ABOVE THE STATION TO SCALEFT ABOVE THE STATION01,0002,0003,0004,0005,0006,0007,0008,00030 F40 F50 F60 F70 FSATURATES 3,000 FT ABOVE THE STATION, AT 39.1 FLOWEST CLOUD REPORTED, FEW 6,000 FTTEMPERATURE 55.0 FDEW POINT 42.0 FSPREAD 13.0 FRELATIVE HUMIDITY 61 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 POINTTITLECaldwell/Essex Co., the airSTATION REPORT · ASOS CDWTYPECHARTSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 2 of 6DATE2026-10-17IDSR-CDW-2DRAWN AS linework on paperSOURCES FB-WAT-002, FB-ENG-011, FB-ENG-005

The wind

From the northwest (320 degrees) at 8 mph, gusting 17 mph: force 3, a gentle breeze on the Beaufort scale. The strongest gust today was 25 mph.

Plan of the wind at Caldwell/Essex Co., north up: blowing from 320 degrees, the northwest, at 8 miles an hour, gusting 17; beside it the Beaufort scale from calm to hurricane force, force 3, gentle breeze, marked.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT CDWFIG. C THE WIND AT CALDWELL/ESSEX CO.PLAN, NORTH UP: THE WIND AS REPORTED, AND WHERE IT SITS ON THE BEAUFORT SCALENESWTHE STATIONFROM 320°BEAUFORT FORCELEAST WIND, MPH0CALM01LIGHT AIR12LIGHT BREEZE43GENTLE BREEZE8NOW, 8 MPH4MODERATE BREEZE13GUST, 17 MPH5FRESH BREEZE196STRONG BREEZE257NEAR GALE328GALE399STRONG GALE4710STORM5511VIOLENT STORM6412HURRICANE FORCE73TITLECaldwell/Essex Co., the windSTATION REPORT · ASOS CDWTYPEPLAN north upSCALENOT TO SCALEREVAS REPORTED SHEET 3 of 6DATE2026-10-17IDSR-CDW-3DRAWN AS linework on paperSOURCES FB-EVT-150, FB-ENG-008, FB-INS-002

The full report of Caldwell/Essex Co., in 6 sheets, each beside the Field Book plates that explain it

0in

Snow on the ground

Measured at Boonton 1SE (BOON4), 7.1 miles from here, read 16 Oct, 07:00. measured daily

Elsewhere in New Jersey

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

Near Caldwell

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

Near Caldwell

River and lake gauges