Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
January | 22°F | 38°F | 30°F | 3.2" |
February | 23°F | 39°F | 30°F | 2.2" |
March | 32°F | 52°F | 41°F | 3.4" |
April | 43°F | 65°F | 53°F | 3.4" |
May | 52°F | 74°F | 62°F | 4.2" |
June | 60°F | 81°F | 70°F | 5.1" |
July | 64°F | 84°F | 73°F | 5.1" |
August | 63°F | 82°F | 72°F | 4.1" |
September | 56°F | 77°F | 66°F | 3.1" |
October | 46°F | 65°F | 54°F | 3.8" |
November | 35°F | 54°F | 44°F | 2.8" |
December | 28°F | 43°F | 35°F | 3.7" |
Index | Knoxville | Pittsburgh | Pennsylvania |
Air quality index | 56 | 56 | 45 |
Pollution index | 889,808 | 960,213 | 4,584,805 |
Measurement | Total |
Days measured | 365 |
Days with good air quality | 129 |
Days with moderate air quality | 220 |
Days w/ poor A.Q. for sensitive groups | 12 |
Days with unhealthy air quality | 4 |
Pollutant | Total |
Arsenic | 0.001% |
Benzene | 0.020% |
Carbon Tetrachloride | 0.002% |
Lead | 0.001% |
Mercury | 0.000% |
City | Population | Air Quality Index | National Avg. |
Aliquippa, PA | 8,918 | 6 | 88.0% |
Westland, PA | 45 | 46 | 8.0% |
Avalon, PA | 4,558 | 56 | 12.0% |
Blawnox, PA | 1,580 | 56 | 12.0% |
Emsworth, PA | 2,514 | 56 | 12.0% |
Pittsburgh, PA | 301,286 | 56 | 12.0% |
City | Population | Air Quality Index | National Avg. |
Cincinnati, OH | 302,687 | 54 | 8.0% |
St. Louis, MO | 304,709 | 54 | 8.0% |
St. Paul, MN | 305,877 | 46 | 8.0% |
Greensboro, NC | 294,395 | 43 | 14.0% |
Gatineau, QC | 293,695 | n/a | |
Pittsburgh, PA | 301,286 | 56 | 12.0% |