| 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 | Morningside | Pittsburgh | Pennsylvania |
| Air quality index | 56 | 56 | 45 |
| Pollution index | 960,213 | 960,213 | 4,327,992 |
| Measurement | Total |
| Days measured | 365 |
| Days with good air quality | 123 |
| Days with moderate air quality | 224 |
| Days w/ poor A.Q. for sensitive groups | 17 |
| Days with unhealthy air quality | 1 |
| Pollutant | Total |
| Arsenic | 0.001% |
| Benzene | 0.020% |
| Carbon Tetrachloride | 0.002% |
| Lead | 0.001% |
| Mercury | 0.000% |
| City, State | Population | Air Quality Index | National Avg. |
| Rosslyn Farms, PA | 465 | 56 | 12% |
| Sewickley Heights, PA | 730 | 56 | 12% |
| Springdale, PA | 3,388 | 56 | 12% |
| Thornburg, PA | 449 | 56 | 12% |
| Valencia, PA | 607 | 56 | 12% |
| Pittsburgh, PA | 305,305 | 56 | 12% |
| City, State | Population | Air Quality Index | National Avg. |
| Stockton, CA | 301,443 | 57 | 14% |
| Anchorage, AK | 299,321 | 29 | 42% |
| Lexington-Fayette, KY | 311,529 | 42 | 16% |
| Cincinnati, OH | 298,011 | 54 | 8% |
| St. Paul, MN | 297,160 | 44 | 12% |
| Pittsburgh, PA | 305,305 | 56 | 12% |