| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 15°F | 36°F | 25°F | 3.2" |
| February | 15°F | 37°F | 26°F | 4.2" |
| March | 24°F | 44°F | 34°F | 4.0" |
| April | 34°F | 57°F | 45°F | 5.0" |
| May | 44°F | 67°F | 55°F | 4.5" |
| June | 53°F | 75°F | 63°F | 5.8" |
| July | 60°F | 82°F | 70°F | 4.3" |
| August | 58°F | 80°F | 69°F | 4.4" |
| September | 51°F | 74°F | 62°F | 4.1" |
| October | 41°F | 62°F | 51°F | 6.9" |
| November | 31°F | 52°F | 41°F | 4.4" |
| December | 21°F | 40°F | 30°F | 5.3" |
| Index | Saco | Maine | National |
| Air quality index | 40 | 33 | 42 |
| Pollution index | 91,790 | 3,417,521 | 2,726,193 |
| Measurement | Total |
| Days measured | 365 |
| Days with good air quality | 308 |
| Days with moderate air quality | 56 |
| Days w/ poor A.Q. for sensitive groups | 1 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.000% |
| Benzene | 0.002% |
| Carbon Tetrachloride | 0.000% |
| Lead | 0.001% |
| Mercury | 0.000% |
| City | Population | Air Quality Index | National Avg. |
| Gorham, ME | 7,322 | 40 | 20.0% |
| North Berwick, ME | 1,716 | 40 | 20.0% |
| Portland, ME | 66,706 | 40 | 20.0% |
| Kennebunk, ME | 5,792 | 40 | 20.0% |
| Old Orchard Beach, ME | 8,952 | 40 | 20.0% |
| Saco, ME | 19,716 | 40 | 20.0% |
| City | Population | Air Quality Index | National Avg. |
| Willmar, MN | 19,728 | 32 | 36.0% |
| North Bay Shore, NY | 19,728 | 43 | 14.0% |
| Murrysville, PA | 19,692 | 56 | 12.0% |
| Niskayuna, NY | 19,741 | 37 | 26.0% |
| West Mifflin, PA | 19,742 | 56 | 12.0% |
| Saco, ME | 19,716 | 40 | 20.0% |
Here are the best places to live in Maine
Top 10 best public schools in Saco
Top 10 cities in Maine with the best education system
Check out the 10 safest cities in Maine