TODAY AUG14
TEMPERATURE79
HUMIDITY72
PRESSURE29.92
WIND COND.260 8.1
  • 9072Wed
  • 9174Thu
  • 9173Fri50%50%
  • 8770Sat
  • 8669Sun30%30%
daynightWeather update from Wilmington, New Castle County Airport at

Wilmington Average Weather

In the event that the weather data was unavailable for this city, estimates based upon nearby cities were used.
MonthTemp. (min)Temp. (max)Temp. (avg)Precipitation
January27°F43°F34°F3.3"
February26°F43°F34°F2.5"
March34°F54°F43°F3.7"
April44°F66°F54°F4.9"
May52°F74°F63°F3.2"
June64°F83°F73°F5.0"
July68°F87°F77°F5.6"
August67°F86°F76°F3.7"
September59°F79°F69°F4.1"
October48°F67°F57°F6.1"
November40°F57°F48°F3.3"
December30°F46°F38°F5.3"

Did you know?

  • The highest monthly average temperature in Wilmington for July is 77 degrees.
  • The lowest monthly average temperature in Wilmington for February is 34 degrees.
  • The most monthly precipitation in Wilmington occurs in October with 6.1 inches.
  • The air quality index in Wilmington is 14% worse than the national average.
  • The pollution index in Wilmington is 57% better than the national average.

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Compare Wilmington, DE Weather To Other Cities

Wilmington air quality index & pollution index

In the event that the air quality/pollution data was unavailable for this city, estimates based upon nearby cities were used.
IndexWilmingtonDelawareNational
Air quality index574150
Pollution index2,169,6003,759,2125,066,862

Wilmington air quality information

MeasurementTotal
Days measured365
Days with good air quality110
Days with moderate air quality244
Days w/ poor A.Q. for sensitive groups11
Days with unhealthy air quality

Wilmington air quality information

PollutantTotal
Arsenic0.010%
Benzene0.030%
Carbon Tetrachloride0.002%
Lead0.010%
Mercury0.004%

Average monthly Wilmington temperature with heat index

Wilmington monthly precipitation with daily maximum

Wilmington monthly snow depth with daily maximum

Wilmington monthly wind speed information

Nearby cities with good air quality

City, StatePopulationAir Quality IndexNational Avg.
Alloway, NJ1,4573138%
Quinton, NJ5493138%
Salem, NJ4,9313138%
Pennsville, NJ11,4213138%
Woodstown, NJ3,5483138%
Wilmington, DE71,5025714%

Cities with similar population

City, StatePopulationAir Quality IndexNational Avg.
Apple Valley, CA71,4558570%
Pawtucket, RI71,3894510%
Missouri City, TX71,732524%
Gulfport, MS71,2653824%
Lafayette, IN71,249524%
Wilmington, DE71,5025714%
Source: The Wilmington, DE weather data displayed above is derived from the NOAA (National Oceanic and Atmospheric). Air quality and pollution data is derived from the EPA (United States Environmental Protection Agency). Air quality and pollution levels measured in a particular area may not be representative of the entire county.