Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
January | 23°F | 40°F | 31°F | 2.6" |
February | 23°F | 42°F | 32°F | 2.4" |
March | 31°F | 53°F | 41°F | 3.1" |
April | 42°F | 66°F | 54°F | 3.6" |
May | 51°F | 75°F | 63°F | 3.7" |
June | 61°F | 84°F | 72°F | 4.8" |
July | 66°F | 88°F | 77°F | 5.0" |
August | 64°F | 85°F | 74°F | 4.7" |
September | 57°F | 79°F | 68°F | 4.4" |
October | 46°F | 67°F | 56°F | 4.8" |
November | 35°F | 55°F | 45°F | 2.7" |
December | 29°F | 45°F | 36°F | 3.8" |
Index | Pennwyn | Pennsylvania | National |
Air quality index | 42 | 45 | 42 |
Pollution index | 11,091,200 | 4,584,805 | 2,726,193 |
Measurement | Total |
Days measured | 365 |
Days with good air quality | 279 |
Days with moderate air quality | 80 |
Days w/ poor A.Q. for sensitive groups | 5 |
Days with unhealthy air quality | 1 |
Pollutant | Total |
Arsenic | 0.010% |
Benzene | 0.140% |
Carbon Tetrachloride | 0.030% |
Lead | 0.310% |
Mercury | 0.004% |
City | Population | Air Quality Index | National Avg. |
Douglassville, PA | 439 | 42 | 16.0% |
Hyde Park, PA | 2,148 | 42 | 16.0% |
Mount Penn, PA | 3,112 | 42 | 16.0% |
Reading, PA | 88,333 | 42 | 16.0% |
Newmanstown, PA | 2,798 | 42 | 16.0% |
Pennwyn, PA | 658 | 42 | 16.0% |
City | Population | Air Quality Index | National Avg. |
Ona, FL | 658 | 36 | 28.0% |
Melba, ID | 658 | 36 | 28.0% |
Marengo, IN | 658 | 6 | 88.0% |
Russell, MA | 658 | 40 | 20.0% |
Marshall, NC | 658 | 44 | 12.0% |
Pennwyn, PA | 658 | 42 | 16.0% |