Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
January | 17°F | 31°F | 24°F | 1.7" |
February | 17°F | 32°F | 24°F | 1.1" |
March | 26°F | 44°F | 34°F | 1.9" |
April | 37°F | 59°F | 47°F | 4.0" |
May | 48°F | 71°F | 59°F | 3.4" |
June | 58°F | 80°F | 68°F | 4.0" |
July | 61°F | 83°F | 72°F | 3.1" |
August | 60°F | 81°F | 70°F | 4.6" |
September | 52°F | 75°F | 63°F | 2.9" |
October | 42°F | 62°F | 52°F | 3.1" |
November | 32°F | 49°F | 40°F | 2.1" |
December | 23°F | 35°F | 29°F | 1.7" |
Index | St. Charles | Michigan | National |
Air quality index | 26 | 69 | 42 |
Pollution index | 7,127,120 | 4,161,606 | 2,726,193 |
Measurement | Total |
Days measured | 316 |
Days with good air quality | 288 |
Days with moderate air quality | 28 |
Days w/ poor A.Q. for sensitive groups | 0 |
Days with unhealthy air quality | 0 |
Pollutant | Total |
Arsenic | 0.160% |
Benzene | 0.040% |
Carbon Tetrachloride | 0.010% |
Lead | 0.050% |
Mercury | 0.140% |
City | Population | Air Quality Index | National Avg. |
Merrill, MI | 852 | 26 | 48.0% |
Saginaw, MI | 48,407 | 26 | 48.0% |
Buena Vista, MI | 6,401 | 26 | 48.0% |
Shields, MI | 7,301 | 26 | 48.0% |
Bridgeport, MI | 6,208 | 26 | 48.0% |
St. Charles, MI | 2,101 | 26 | 48.0% |
City | Population | Air Quality Index | National Avg. |
Anza, CA | 2,101 | 89 | 78.0% |
Sturbridge, MA | 2,101 | 40 | 20.0% |
Southmont, PA | 2,101 | 39 | 22.0% |
Blacksburg, SC | 2,101 | 36 | 28.0% |
Sainte-Béatrix, QC | 2,101 | n/a | |
St. Charles, MI | 2,101 | 26 | 48.0% |