| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 33°F | 49°F | 40°F | 4.9" |
| February | 34°F | 53°F | 43°F | 4.3" |
| March | 37°F | 58°F | 47°F | 5.0" |
| April | 38°F | 63°F | 50°F | 2.6" |
| May | 43°F | 70°F | 56°F | 2.2" |
| June | 47°F | 76°F | 61°F | 1.2" |
| July | 51°F | 86°F | 68°F | 0.4" |
| August | 51°F | 87°F | 68°F | 0.3" |
| September | 47°F | 80°F | 62°F | 1.2" |
| October | 42°F | 66°F | 53°F | 3.6" |
| November | 37°F | 55°F | 45°F | 6.0" |
| December | 32°F | 48°F | 39°F | 6.7" |
| Index | Springfield | Oregon | National |
| Air quality index | 38 | 32 | 42 |
| Pollution index | 3,310,060 | 7,156,356 | 2,726,193 |
| Measurement | Total |
| Days measured | 365 |
| Days with good air quality | 254 |
| Days with moderate air quality | 103 |
| Days w/ poor A.Q. for sensitive groups | 8 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.010% |
| Benzene | 0.050% |
| Carbon Tetrachloride | 0.020% |
| Lead | 0.020% |
| Mercury | 0.005% |
| City | Population | Air Quality Index | National Avg. |
| Coburg, OR | 1,384 | 38 | 24.0% |
| Eugene, OR | 170,457 | 38 | 24.0% |
| Junction City, OR | 6,140 | 38 | 24.0% |
| Lowell, OR | 1,027 | 38 | 24.0% |
| Creswell, OR | 5,445 | 38 | 24.0% |
| Springfield, OR | 62,729 | 38 | 24.0% |
| City | Population | Air Quality Index | National Avg. |
| Brentwood, NY | 62,743 | 43 | 14.0% |
| Coon Rapids, MN | 62,706 | 46 | 8.0% |
| Montebello, CA | 62,697 | 72 | 44.0% |
| La Habra, CA | 62,787 | 72 | 44.0% |
| Waltham, MA | 62,597 | 43 | 14.0% |
| Springfield, OR | 62,729 | 38 | 24.0% |
Here are the best places to live in Oregon
Top 10 cities in Oregon with the best education system
These are the 10 most affordable cities in Oregon
10 Best cities in Oregon for employment