Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
January | 22°F | 36°F | 29°F | 6.9" |
February | 19°F | 34°F | 26°F | 3.4" |
March | 33°F | 54°F | 42°F | 3.3" |
April | 41°F | 65°F | 52°F | 5.8" |
May | 52°F | 78°F | 65°F | 3.4" |
June | 63°F | 85°F | 74°F | 6.1" |
July | 63°F | 83°F | 73°F | 5.8" |
August | 65°F | 86°F | 75°F | 5.4" |
September | 57°F | 83°F | 69°F | 7.0" |
October | 46°F | 69°F | 57°F | 5.6" |
November | 33°F | 53°F | 42°F | 7.3" |
December | 21°F | 35°F | 27°F | 3.7" |
Index | St. Joseph | Illinois | National |
Air quality index | 42 | 41 | 42 |
Pollution index | 9,793,540 | 3,148,694 | 2,726,193 |
Measurement | Total |
Days measured | 365 |
Days with good air quality | 281 |
Days with moderate air quality | 84 |
Days w/ poor A.Q. for sensitive groups | 0 |
Days with unhealthy air quality | 0 |
Pollutant | Total |
Arsenic | 0.010% |
Benzene | 0.070% |
Carbon Tetrachloride | 0.010% |
Lead | 0.001% |
Mercury | 0.040% |
City | Population | Air Quality Index | National Avg. |
Rantoul, IL | 12,946 | 42 | 16.0% |
Allerton, IL | 267 | 42 | 16.0% |
Champaign, IL | 88,288 | 42 | 16.0% |
Ogden, IL | 773 | 42 | 16.0% |
Savoy, IL | 8,802 | 42 | 16.0% |
St. Joseph, IL | 4,053 | 42 | 16.0% |
City | Population | Air Quality Index | National Avg. |
Cannon Falls, MN | 4,053 | 37 | 26.0% |
St. James, MO | 4,053 | 39 | 22.0% |
Northern Lights County, AB | 4,053 | n/a | |
Mount Olive, AL | 4,052 | 53 | 6.0% |
Singac, NJ | 4,054 | 51 | 2.0% |
St. Joseph, IL | 4,053 | 42 | 16.0% |