Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
January | 20°F | 37°F | 28°F | 2.1" |
February | 21°F | 38°F | 29°F | 2.0" |
March | 34°F | 54°F | 43°F | 3.0" |
April | 44°F | 66°F | 55°F | 4.3" |
May | 54°F | 74°F | 63°F | 3.7" |
June | 64°F | 84°F | 74°F | 6.0" |
July | 66°F | 86°F | 76°F | 4.5" |
August | 66°F | 86°F | 75°F | 4.2" |
September | 57°F | 79°F | 67°F | 4.3" |
October | 45°F | 64°F | 54°F | 3.9" |
November | 36°F | 54°F | 44°F | 2.7" |
December | 23°F | 38°F | 29°F | 2.4" |
Index | Quincy | Illinois | National |
Air quality index | 41 | 41 | 42 |
Pollution index | 425,218 | 3,148,694 | 2,726,193 |
Measurement | Total |
Days measured | 241 |
Days with good air quality | 208 |
Days with moderate air quality | 33 |
Days w/ poor A.Q. for sensitive groups | 0 |
Days with unhealthy air quality | 0 |
Pollutant | Total |
Arsenic | 0.001% |
Benzene | 0.010% |
Carbon Tetrachloride | 0.001% |
Lead | 0.001% |
Mercury | 0.000% |
City | Population | Air Quality Index | National Avg. |
Mendon, IL | 1,092 | 41 | 18.0% |
Canton, MO | 2,455 | 41 | 18.0% |
Payson, IL | 1,398 | 41 | 18.0% |
Ursa, IL | 541 | 41 | 18.0% |
Columbus, IL | 80 | 41 | 18.0% |
Quincy, IL | 40,111 | 41 | 18.0% |
City | Population | Air Quality Index | National Avg. |
San Gabriel, CA | 40,108 | 72 | 44.0% |
Hollister, CA | 40,100 | 37 | 26.0% |
Cape Girardeau, MO | 40,100 | 44 | 12.0% |
Spanish Fork, UT | 40,069 | 46 | 8.0% |
Holyoke, MA | 40,161 | 40 | 20.0% |
Quincy, IL | 40,111 | 41 | 18.0% |