Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
January | 17°F | 37°F | 26°F | 2.3" |
February | 18°F | 39°F | 28°F | 2.1" |
March | 31°F | 54°F | 42°F | 3.1" |
April | 41°F | 67°F | 54°F | 4.7" |
May | 51°F | 77°F | 64°F | 4.4" |
June | 62°F | 85°F | 73°F | 5.4" |
July | 65°F | 88°F | 76°F | 3.4" |
August | 64°F | 86°F | 74°F | 3.5" |
September | 56°F | 81°F | 68°F | 4.1" |
October | 44°F | 68°F | 55°F | 3.4" |
November | 33°F | 55°F | 43°F | 2.9" |
December | 22°F | 39°F | 30°F | 2.7" |
Index | Heritage Lake | Illinois | National |
Air quality index | 44 | 41 | 42 |
Pollution index | 672,031 | 3,148,694 | 2,726,193 |
Measurement | Total |
Days measured | 364 |
Days with good air quality | 256 |
Days with moderate air quality | 108 |
Days w/ poor A.Q. for sensitive groups | 0 |
Days with unhealthy air quality | 0 |
Pollutant | Total |
Arsenic | 0.001% |
Benzene | 0.030% |
Carbon Tetrachloride | 0.000% |
Lead | 0.001% |
Mercury | 0.020% |
City | Population | Air Quality Index | National Avg. |
Deer Creek, IL | 641 | 41 | 18.0% |
Mackinaw, IL | 1,970 | 41 | 18.0% |
Tremont, IL | 2,261 | 41 | 18.0% |
East Peoria, IL | 22,615 | 41 | 18.0% |
Marquette Heights, IL | 2,742 | 41 | 18.0% |
Heritage Lake, IL | 1,664 | 44 | 12.0% |
City | Population | Air Quality Index | National Avg. |
Milford, IN | 1,664 | 37 | 26.0% |
Lumberton, MS | 1,664 | 35 | 30.0% |
Holland, OH | 1,664 | 40 | 20.0% |
Nouvelle, QC | 1,664 | n/a | |
Oakland, IA | 1,665 | 40 | 20.0% |
Heritage Lake, IL | 1,664 | 44 | 12.0% |