Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
January | 18°F | 33°F | 25°F | 2.5" |
February | 17°F | 34°F | 26°F | 2.0" |
March | 25°F | 47°F | 36°F | 2.5" |
April | 36°F | 62°F | 48°F | 4.5" |
May | 47°F | 73°F | 60°F | 3.3" |
June | 57°F | 82°F | 70°F | 4.8" |
July | 61°F | 85°F | 73°F | 4.3" |
August | 60°F | 83°F | 71°F | 3.8" |
September | 52°F | 77°F | 64°F | 3.2" |
October | 42°F | 64°F | 52°F | 4.9" |
November | 32°F | 51°F | 41°F | 2.7" |
December | 24°F | 38°F | 30°F | 2.5" |
Index | Millbrook | Grand Rapids | Michigan |
Air quality index | 38 | 38 | 69 |
Pollution index | 1,401,450 | 1,401,450 | 4,161,606 |
Measurement | Total |
Days measured | 365 |
Days with good air quality | 298 |
Days with moderate air quality | 67 |
Days w/ poor A.Q. for sensitive groups | 0 |
Days with unhealthy air quality | 0 |
Pollutant | Total |
Arsenic | 0.001% |
Benzene | 0.020% |
Carbon Tetrachloride | 0.002% |
Lead | 0.005% |
Mercury | 0.000% |
City | Population | Air Quality Index | National Avg. |
Forest Hills, MI | 28,690 | 38 | 24.0% |
Kentwood, MI | 51,780 | 38 | 24.0% |
Wyoming, MI | 75,999 | 38 | 24.0% |
Comstock Park, MI | 10,659 | 38 | 24.0% |
Grandville, MI | 15,906 | 38 | 24.0% |
Grand Rapids, MI | 199,417 | 38 | 24.0% |
City | Population | Air Quality Index | National Avg. |
Glendale, CA | 199,357 | 72 | 44.0% |
Aurora, IL | 199,326 | 55 | 10.0% |
Amarillo, TX | 199,225 | 44 | 12.0% |
Huntington Beach, CA | 199,778 | 72 | 44.0% |
Montgomery, AL | 199,054 | 52 | 4.0% |
Grand Rapids, MI | 199,417 | 38 | 24.0% |