Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
January | 18°F | 34°F | 25°F | 2.5" |
February | 19°F | 36°F | 27°F | 2.8" |
March | 31°F | 50°F | 39°F | 4.5" |
April | 41°F | 63°F | 51°F | 4.9" |
May | 50°F | 73°F | 61°F | 4.7" |
June | 60°F | 83°F | 71°F | 5.4" |
July | 64°F | 85°F | 74°F | 5.7" |
August | 62°F | 83°F | 72°F | 6.8" |
September | 55°F | 77°F | 65°F | 5.4" |
October | 44°F | 64°F | 53°F | 5.7" |
November | 33°F | 51°F | 41°F | 4.9" |
December | 23°F | 37°F | 30°F | 3.7" |
Index | Joliet | Illinois | National |
Air quality index | 55 | 41 | 50 |
Pollution index | 1,558,070 | 3,347,295 | 5,066,862 |
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 | 0.010% |
Benzene | 0.010% |
Carbon Tetrachloride | 0.070% |
Lead | 0.090% |
Mercury | 0.010% |
City, State | Population | Air Quality Index | National Avg. |
Shorewood, IL | 16,539 | 0 | 100% |
Oswego, IL | 33,245 | 0 | 100% |
Channahon, IL | 12,329 | 0 | 100% |
Wilmington village, IL | 144 | 0 | 100% |
Minooka, IL | 11,786 | 0 | 100% |
Joliet, IL | 147,515 | 55 | 10% |
City, State | Population | Air Quality Index | National Avg. |
Torrance, CA | 147,307 | 72 | 44% |
Bridgeport, CT | 147,022 | 43 | 14% |
Hollywood, FL | 148,114 | 41 | 18% |
Paterson, NJ | 146,894 | 51 | 2% |
Clarksville, TN | 146,281 | 40 | 20% |
Joliet, IL | 147,515 | 55 | 10% |