Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
January | 20°F | 38°F | 29°F | 2.4" |
February | 20°F | 40°F | 30°F | 1.9" |
March | 29°F | 51°F | 39°F | 2.6" |
April | 39°F | 65°F | 52°F | 3.4" |
May | 49°F | 75°F | 61°F | 3.8" |
June | 59°F | 83°F | 71°F | 3.9" |
July | 62°F | 86°F | 74°F | 4.7" |
August | 60°F | 84°F | 71°F | 4.2" |
September | 53°F | 78°F | 64°F | 4.4" |
October | 43°F | 66°F | 53°F | 4.5" |
November | 32°F | 54°F | 42°F | 3.0" |
December | 26°F | 43°F | 34°F | 3.2" |
Index | Herndon | Pennsylvania | National |
Air quality index | 44 | 45 | 42 |
Pollution index | 3,637,020 | 4,584,805 | 2,726,193 |
Measurement | Total |
Days measured | 365 |
Days with good air quality | 252 |
Days with moderate air quality | 107 |
Days w/ poor A.Q. for sensitive groups | 5 |
Days with unhealthy air quality | 1 |
Pollutant | Total |
Arsenic | 0.020% |
Benzene | 0.030% |
Carbon Tetrachloride | 0.004% |
Lead | 0.010% |
Mercury | 0.002% |
City | Population | Air Quality Index | National Avg. |
Hummels Wharf, PA | 939 | 35 | 30.0% |
New Berlin, PA | 771 | 35 | 30.0% |
Sunbury, PA | 9,446 | 35 | 30.0% |
Kapp Heights, PA | 697 | 35 | 30.0% |
Kratzerville, PA | 336 | 35 | 30.0% |
Herndon, PA | 374 | 44 | 12.0% |
City | Population | Air Quality Index | National Avg. |
Potter Valley, CA | 374 | 33 | 34.0% |
Mondamin, IA | 374 | 40 | 20.0% |
Eden, ID | 374 | 20 | 60.0% |
Marshall, IN | 374 | 45 | 10.0% |
Sylvan Grove, KS | 374 | 32 | 36.0% |
Herndon, PA | 374 | 44 | 12.0% |