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Colonia, New Jersey

Community in Middlesex County, New Jersey

Air quality

The air at Colonia

Index 27, good, led by fine particles. Read at 3 AM from its reporting area, Northeast Urban (NJ), 10 miles off.

27Good
  • Fine particles (PM2.5)27Good-
  • Ozone24Good-

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 Colonia

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 Colonia, the next 41 hours

Mist or haze: visibility falls to 2 miles Fri 9 AM.

FriSat

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

What is measuring near here

The 5 instruments nearest Colonia, 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

LindenLDJ

At an airfield/4.1 mi away/23 ft/54 ft below here

temp, wind, gust, visibility, precip, pressure

Rank481of 737

measured daily2 instruments

Woodbridge Twp 3.0 NNWNJ-MD-50

In a volunteer observer's own ground/0.7 mi away/72 ft/5 ft below here

precip, snowfall, snow depth

Rank-

Canoe BrookCHMN4

At a cooperative observer's station/10.5 mi away/188 ft/111 ft above here

snowfall, snow depth, precip, high, low

Rank-

Station report

The weather at Citizen station W2GRK-15, drawn

The nearest instrument reporting now, 3.4 mi from Colonia, New Jersey. From its report of undefined: 3 of its 4 sheets.

The wind

Calm.

Plan of the wind at Citizen station W2GRK-15, 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 W2GRK-15FIG. C THE WIND AT CITIZEN STATION W2GRK-15PLAN, 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 FORCE73TITLECitizen station W2GRK-15, the windSTATION REPORT · CWOP W2GRK-15TYPEPLAN north upSCALENOT TO SCALEREVAS REPORTED SHEET 1 of 4DATE2026-10-16IDSR-W2GRK15-1DRAWN AS linework on paperSOURCES FB-EVT-150, FB-ENG-008

The column

At 111 ft above sea level, 0 per cent of the atmosphere's air lies below the station. The standard atmosphere puts the pressure there at 29.80 inHg and the temperature at 58.6 F; the station's altimeter setting of 30.06 inHg means its barometer reads 29.94 inHg; it reports 59.0 F, 0.4 F warmer than standard.

Section from sea level of where Citizen station W2GRK-15 stands in the atmosphere, height to scale: the station 111 feet above sea level with 0 per cent of the air below it; the standard atmosphere's pressure there, 29.80 inches of mercury, and temperature, 58.6 degrees Fahrenheit; the altimeter setting of 30.06 and the station pressure it means, 29.94.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT W2GRK-15FIG. D WHERE CITIZEN STATION W2GRK-15 STANDS IN THE ATMOSPHERESECTION FROM SEA LEVEL, HEIGHT TO SCALE, THE STATION IN THE STANDARD ATMOSPHEREFT ABOVE SEA LEVEL05,00010,00015,000SEA LEVEL, 29.92 inHg IN THE STANDARD ATMOSPHERECITIZEN STATION W2GRK-150 PER CENT OF THE AIR BELOW IT111 FT10 PER CENT OF THE AIR BELOW, 2,890 FT20 PER CENT OF THE AIR BELOW, 6,050 FT30 PER CENT OF THE AIR BELOW, 9,540 FT40 PER CENT OF THE AIR BELOW, 13,470 FTSTANDARD PRESSURE HERE29.80 inHgSTANDARD TEMPERATURE HERE58.6 FALTIMETER SETTING, REPORTED30.06 inHgITS BAROMETER READS29.94 inHgTEMPERATURE, REPORTED59.0 FTITLECitizen station W2GRK-15, the columnSTATION REPORT · CWOP W2GRK-15TYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 2 of 4DATE2026-10-16IDSR-W2GRK15-2DRAWN AS linework on paperSOURCES FB-ENG-001, FB-ENG-003

The sun

On Oct 16 the noon sun stands 40 degrees above the horizon at 40.64 N, and the day is 10 h 57 min long. Level ground there takes 65 per cent of the noon sunlight a surface facing the sun would.

Elevation of the noon sun at Citizen station W2GRK-15, angles true: on Oct 16 it stands 40 degrees above the horizon, against 73 at the June solstice, 49 at the equinoxes and 26 at the December solstice; the day is 10 h 57 min long.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT W2GRK-15FIG. E THE SUN AT CITIZEN STATION W2GRK-15ELEVATION LOOKING WEST, SOUTH TO THE LEFT: THE NOON SUN ON THE DAY OF THE REPORT, AND AT THE SOLSTICES AND EQUINOXES; ANGLES TRUETHE STATIONJUNE SOLSTICE 73°EQUINOXES 49°DECEMBER SOLSTICE 26°OCT 16, 40°SOUTHANGLES TRUE; THE RAYS ARE OF ONE LENGTH AND DRAW DIRECTION ONLYDAY LENGTH 10 H 57 MINLEVEL GROUND TAKES 65 PER CENT OF THE NOON SUN A FACING SURFACE WOULDLATITUDE 40.64 N; THE SUN'S DECLINATION -9.1°TITLECitizen station W2GRK-15, the sunSTATION REPORT · CWOP W2GRK-15TYPEELEVATIONSCALEANGLES TRUEREVAS REPORTED SHEET 3 of 4DATE2026-10-16IDSR-W2GRK15-3DRAWN AS linework on paperSOURCES FB-ENG-007

The full report of Citizen station W2GRK-15, in 4 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 Colonia

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

Near Colonia

River and lake gauges