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New Castle, Delaware

City in New Castle County, Delaware

Air quality

The air at New Castle

Index 23, good, led by ozone. Read at 11 PM from its reporting area, Wilmington Area (DE), 6 miles off.

23Good
  • Fine particles (PM2.5)14Good13.7 mi
  • Ozone23Good20 ppb15.7 mi
  • Coarse particles (PM10)9Good-

The days ahead

Yesterday measured 55, moderate.

Smoke, the next 46 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 New Castle

None in the last 24 hours; 0.06 in over the last 3 days, to Thu 10 PM. Measured by radar and rain gauges, as water.

Last 24 hours
0.00in
Last 3 days
0.06in

Visibility

How far you can see at New Castle, the next 46 hours

Visibility stays 4 miles or more through Sat 8 PM, lowest 4 miles Fri 8 PM.

FriSat

On the radar over New Castle, DelawareReflectivityStorm topsRain rateRain, last 24 hoursForecast temperatureForecast rain totalEvery picture

What is measuring near here

The 6 instruments nearest New Castle, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 1.7 miles away.

measured now4 instruments

Delaware CityNDBC-DELD1

At a river or reservoir gauge/5.6 mi away/-/- ft from here

temp, wind, gust, humidity, pressure

Rank120of 127

measured daily2 instruments

New Castle 2.6 WSWDE-NC-36

In a volunteer observer's own ground/2.4 mi away/48 ft/30 ft above here

precip, snowfall, snow depth

Rank-

WilmingtonWILD1

At a cooperative observer's station/7.5 mi away/157 ft/139 ft above here

snowfall, snow depth, precip, high, low

Rank-

Station report

The weather at Wilmington Airport, drawn

The nearest airport reporting now, 1.7 mi from New Castle, Delaware. From its report of Oct 15, 2026, 10:51 PM local time: 3 of its 6 sheets.

The sky

Scattered at 2,300 ft, overcast at 4,400 ft; the ceiling is 4,400 ft; visibility 10 mi or more.

Section of the sky over Wilmington Airport, height above the station to scale: scattered cloud with its base at 2,300 feet, overcast cloud with its base at 4,400 feet, the ceiling at 4,400 feet, and visibility of 10 mi or more.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT ILGFIG. A THE SKY OVER WILMINGTON AIRPORTSECTION, 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 4,400 FTOVERCAST, 8 EIGHTHS OF THE SKYSCT 2,300 FTSCATTERED, 3 TO 4 EIGHTHS OF THE SKYCEILING 4,400 FTVISIBILITY, MILES: 10 MI OR MORE0510TITLEWilmington Airport, the skySTATION REPORT · ASOS ILGTYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 1 of 6DATE2026-10-16IDSR-ILG-1DRAWN AS linework on paperSOURCES FB-SKY-001, FB-SKY-017, FB-SKY-016, FB-SKY-018

The air

60.0 F with a dew point of 54.0 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 2,300 ft.

Chart of the air at Wilmington Airport: temperature 60.0 degrees Fahrenheit and dew point 54.0, 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 2,300 feet; height to scale.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT ILGFIG. B THE AIR AT WILMINGTON AIRPORTTHE REPORTED TEMPERATURE AND DEW POINT, AND AIR LIFTED FROM THE STATION WITHOUT MIXING UNTIL IT SATURATES; HEIGHT ABOVE THE STATION TO SCALEFT ABOVE THE STATION01,0002,0003,00040 F50 F60 F70 FSATURATES 1,400 FT ABOVE THE STATION, AT 52.6 FLOWEST CLOUD REPORTED, SCT 2,300 FTTEMPERATURE 60.0 FDEW POINT 54.0 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 POINTTITLEWilmington Airport, the airSTATION REPORT · ASOS ILGTYPECHARTSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 2 of 6DATE2026-10-16IDSR-ILG-2DRAWN AS linework on paperSOURCES FB-WAT-002, FB-ENG-011, FB-ENG-005

The wind

From the south southeast (150 degrees) at 7 mph: force 2, a light breeze on the Beaufort scale. The strongest gust today was 22 mph.

Plan of the wind at Wilmington Airport, north up: blowing from 150 degrees, the south southeast, at 7 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 ILGFIG. C THE WIND AT WILMINGTON AIRPORTPLAN, NORTH UP: THE WIND AS REPORTED, AND WHERE IT SITS ON THE BEAUFORT SCALENESWTHE STATIONFROM 150°BEAUFORT FORCELEAST WIND, MPH0CALM01LIGHT AIR12LIGHT BREEZE4NOW, 7 MPH3GENTLE BREEZE84MODERATE BREEZE135FRESH BREEZE196STRONG BREEZE257NEAR GALE328GALE399STRONG GALE4710STORM5511VIOLENT STORM6412HURRICANE FORCE73TITLEWilmington Airport, the windSTATION REPORT · ASOS ILGTYPEPLAN north upSCALENOT TO SCALEREVAS REPORTED SHEET 3 of 6DATE2026-10-16IDSR-ILG-3DRAWN AS linework on paperSOURCES FB-EVT-150, FB-ENG-008, FB-INS-002

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

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Snow on the ground

Elsewhere in Delaware

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

Near New Castle

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

Near New Castle

River and lake gauges