Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
January | 18°F | 34°F | 25°F | 3.2" |
February | 19°F | 36°F | 27°F | 2.6" |
March | 32°F | 51°F | 40°F | 3.2" |
April | 41°F | 64°F | 51°F | 5.2" |
May | 51°F | 74°F | 62°F | 5.3" |
June | 61°F | 83°F | 71°F | 9.7" |
July | 64°F | 86°F | 74°F | 5.3" |
August | 62°F | 84°F | 73°F | 9.8" |
September | 55°F | 79°F | 66°F | 6.1" |
October | 44°F | 65°F | 54°F | 7.0" |
November | 34°F | 52°F | 42°F | 3.8" |
December | 24°F | 38°F | 31°F | 3.7" |
Index | Grant Park | Illinois | National |
Air quality index | 55 | 41 | 42 |
Pollution index | 3,962,360 | 3,148,694 | 2,726,193 |
Measurement | Total |
Days measured | 365 |
Days with good air quality | 121 |
Days with moderate air quality | 227 |
Days w/ poor A.Q. for sensitive groups | 16 |
Days with unhealthy air quality | 1 |
Pollutant | Total |
Arsenic | 0.002% |
Benzene | 0.070% |
Carbon Tetrachloride | 0.020% |
Lead | 0.300% |
Mercury | 0.110% |
City | Population | Air Quality Index | National Avg. |
Sammons Point, IL | 207 | 0 | 100.0% |
Lake Dalecarlia, IN | 1,779 | 37 | 26.0% |
Lake Village, IN | 707 | 37 | 26.0% |
Cedar Lake, IN | 12,830 | 55 | 10.0% |
Lowell, IN | 9,793 | 55 | 10.0% |
Grant Park, IL | 1,681 | 55 | 10.0% |
City | Population | Air Quality Index | National Avg. |
Dalton, OH | 1,681 | 46 | 8.0% |
Tremont, PA | 1,681 | 42 | 16.0% |
Webster, SD | 1,681 | 25 | 50.0% |
Sacré-Coeur, QC | 1,681 | n/a | |
Ashland, AL | 1,680 | 38 | 24.0% |
Grant Park, IL | 1,681 | 55 | 10.0% |