Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
January | 18°F | 32°F | 25°F | 3.5" |
February | 16°F | 32°F | 24°F | 2.2" |
March | 26°F | 43°F | 33°F | 2.2" |
April | 36°F | 57°F | 45°F | 2.8" |
May | 46°F | 69°F | 57°F | 3.2" |
June | 56°F | 77°F | 66°F | 3.6" |
July | 61°F | 81°F | 71°F | 4.0" |
August | 60°F | 80°F | 69°F | 3.3" |
September | 53°F | 74°F | 63°F | 3.1" |
October | 43°F | 62°F | 52°F | 2.5" |
November | 33°F | 49°F | 41°F | 2.9" |
December | 24°F | 37°F | 30°F | 3.0" |
Index | St. Clair | Michigan | National |
Air quality index | 56 | 69 | 42 |
Pollution index | 30,180,300 | 4,161,606 | 2,726,193 |
Measurement | Total |
Days measured | 365 |
Days with good air quality | 135 |
Days with moderate air quality | 217 |
Days w/ poor A.Q. for sensitive groups | 13 |
Days with unhealthy air quality | 0 |
Pollutant | Total |
Arsenic | 0.030% |
Benzene | 0.390% |
Carbon Tetrachloride | 0.080% |
Lead | 0.130% |
Mercury | 0.010% |
City | Population | Air Quality Index | National Avg. |
Marysville, MI | 9,695 | 56 | 12.0% |
New Baltimore, MI | 12,333 | 56 | 12.0% |
Memphis, MI | 1,064 | 56 | 12.0% |
Richmond, MI | 5,851 | 56 | 12.0% |
Port Huron, MI | 28,918 | 56 | 12.0% |
St. Clair, MI | 5,354 | 56 | 12.0% |
City | Population | Air Quality Index | National Avg. |
Saint Marys, NB | 5,353 | n/a | |
Candlewick Lake, IL | 5,351 | 42 | 16.0% |
Tonganoxie, KS | 5,357 | 47 | 6.0% |
Macon, MO | 5,357 | 38 | 24.0% |
Toronto, OH | 5,357 | 46 | 8.0% |
St. Clair, MI | 5,354 | 56 | 12.0% |