Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
January | 16°F | 28°F | 22°F | 2.0" |
February | 14°F | 27°F | 20°F | 0.7" |
March | 22°F | 37°F | 29°F | 3.3" |
April | 33°F | 48°F | 39°F | 3.7" |
May | 42°F | 61°F | 51°F | 3.9" |
June | 52°F | 69°F | 60°F | 5.3" |
July | 59°F | 75°F | 66°F | 5.8" |
August | 59°F | 74°F | 66°F | 4.5" |
September | 53°F | 68°F | 60°F | 4.5" |
October | 43°F | 56°F | 49°F | 5.0" |
November | 33°F | 44°F | 38°F | 3.6" |
December | 22°F | 32°F | 27°F | 3.6" |
Index | St. Ignace | Michigan | National |
Air quality index | 32 | 69 | 42 |
Pollution index | 2,221,050 | 4,161,606 | 2,726,193 |
Measurement | Total |
Days measured | 58 |
Days with good air quality | 53 |
Days with moderate air quality | 5 |
Days w/ poor A.Q. for sensitive groups | 0 |
Days with unhealthy air quality | 0 |
Pollutant | Total |
Arsenic | 0.040% |
Benzene | 0.020% |
Carbon Tetrachloride | 0.002% |
Lead | 0.010% |
Mercury | 0.003% |
City | Population | Air Quality Index | National Avg. |
Mackinac Island, MI | 992 | 32 | 36.0% |
Mackinaw City, MI | 704 | 32 | 36.0% |
Carp Lake, MI | 525 | 32 | 36.0% |
St. Ignace, MI | 2,133 | 32 | 36.0% |
City | Population | Air Quality Index | National Avg. |
Ferdinand, IN | 2,133 | 6 | 88.0% |
East Jordan, MI | 2,133 | 36 | 28.0% |
Kahoka, MO | 2,133 | 29 | 42.0% |
Caledonia, NY | 2,133 | 37 | 26.0% |
Chinchilla, PA | 2,133 | 38 | 24.0% |
St. Ignace, MI | 2,133 | 32 | 36.0% |