Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
January | 16°F | 33°F | 25°F | 1.8" |
February | 15°F | 34°F | 25°F | 1.6" |
March | 26°F | 47°F | 36°F | 2.4" |
April | 36°F | 61°F | 48°F | 3.4" |
May | 46°F | 72°F | 59°F | 3.8" |
June | 54°F | 80°F | 68°F | 3.7" |
July | 58°F | 84°F | 72°F | 3.2" |
August | 57°F | 82°F | 70°F | 2.7" |
September | 50°F | 76°F | 62°F | 2.4" |
October | 40°F | 63°F | 51°F | 2.5" |
November | 29°F | 50°F | 40°F | 2.1" |
December | 22°F | 38°F | 30°F | 1.9" |
Index | Ann Arbor | Michigan | National |
Air quality index | 40 | 69 | 42 |
Pollution index | 180,667 | 4,161,606 | 2,726,193 |
Measurement | Total |
Days measured | 365 |
Days with good air quality | 292 |
Days with moderate air quality | 73 |
Days w/ poor A.Q. for sensitive groups | 0 |
Days with unhealthy air quality | 0 |
Pollutant | Total |
Arsenic | 0.000% |
Benzene | 0.002% |
Carbon Tetrachloride | 0.001% |
Lead | 0.000% |
Mercury | 0.000% |
City | Population | Air Quality Index | National Avg. |
Clinton, MI | 2,885 | 39 | 22.0% |
Northville, MI | 5,968 | 40 | 20.0% |
Pinckney, MI | 2,132 | 40 | 20.0% |
Saline, MI | 9,296 | 40 | 20.0% |
Chelsea, MI | 5,378 | 40 | 20.0% |
Ann Arbor, MI | 121,093 | 40 | 20.0% |
City | Population | Air Quality Index | National Avg. |
Allentown, PA | 121,156 | 42 | 16.0% |
Vallejo, CA | 121,275 | 40 | 20.0% |
East Los Angeles, CA | 120,504 | 72 | 44.0% |
Arvada, CO | 120,229 | 58 | 16.0% |
Wilmington, NC | 122,162 | 34 | 32.0% |
Ann Arbor, MI | 121,093 | 40 | 20.0% |