Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
January | 28°F | 46°F | 37°F | 2.9" |
February | 28°F | 48°F | 38°F | 2.3" |
March | 36°F | 57°F | 46°F | 3.1" |
April | 45°F | 68°F | 56°F | 3.5" |
May | 54°F | 77°F | 65°F | 3.1" |
June | 64°F | 85°F | 74°F | 5.6" |
July | 69°F | 89°F | 78°F | 4.5" |
August | 67°F | 87°F | 76°F | 4.8" |
September | 61°F | 81°F | 70°F | 4.7" |
October | 50°F | 71°F | 60°F | 4.4" |
November | 39°F | 60°F | 49°F | 2.9" |
December | 33°F | 52°F | 42°F | 3.6" |
Index | Henlopen Acres | Delaware | National |
Air quality index | 36 | 41 | 42 |
Pollution index | 7,219,540 | 7,274,307 | 2,726,193 |
Measurement | Total |
Days measured | 365 |
Days with good air quality | 303 |
Days with moderate air quality | 61 |
Days w/ poor A.Q. for sensitive groups | 1 |
Days with unhealthy air quality |
Pollutant | Total |
Arsenic | 0.060% |
Benzene | 0.070% |
Carbon Tetrachloride | 0.000% |
Lead | 0.030% |
Mercury | 0.110% |
City | Population | Air Quality Index | National Avg. |
Frankford, DE | 712 | 36 | 28.0% |
Millville, DE | 1,484 | 36 | 28.0% |
Bethany Beach, DE | 1,150 | 36 | 28.0% |
Lewes, DE | 3,266 | 36 | 28.0% |
Milton, DE | 2,993 | 36 | 28.0% |
Henlopen Acres, DE | 187 | 36 | 28.0% |
City | Population | Air Quality Index | National Avg. |
Fox, AK | 187 | 38 | 24.0% |
Morristown, AZ | 187 | 74 | 48.0% |
Coffee Creek, CA | 187 | 42 | 16.0% |
Markleeville, CA | 187 | 13 | 74.0% |
Hillsboro, IA | 187 | 29 | 42.0% |
Henlopen Acres, DE | 187 | 36 | 28.0% |