Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
January | 16°F | 32°F | 24°F | 1.4" |
February | 17°F | 34°F | 25°F | 1.2" |
March | 30°F | 49°F | 38°F | 2.2" |
April | 39°F | 62°F | 50°F | 3.8" |
May | 49°F | 73°F | 60°F | 4.5" |
June | 59°F | 82°F | 70°F | 4.4" |
July | 63°F | 85°F | 74°F | 4.1" |
August | 62°F | 83°F | 72°F | 3.8" |
September | 54°F | 77°F | 65°F | 3.4" |
October | 43°F | 64°F | 53°F | 3.1" |
November | 32°F | 50°F | 40°F | 1.9" |
December | 21°F | 36°F | 29°F | 2.1" |
Index | Streamwood | Illinois | National |
Air quality index | 55 | 41 | 42 |
Pollution index | 14,981,300 | 3,148,694 | 2,726,193 |
Measurement | Total |
Days measured | 365 |
Days with good air quality | 121 |
Days with moderate air quality | 227 |
Days w/ poor A.Q. for sensitive groups | 16 |
Days with unhealthy air quality | 1 |
Pollutant | Total |
Arsenic | 0.010% |
Benzene | 0.140% |
Carbon Tetrachloride | 0.030% |
Lead | 0.020% |
Mercury | 0.010% |
City | Population | Air Quality Index | National Avg. |
Crystal Lake, IL | 39,685 | 42 | 16.0% |
Lake in the Hills, IL | 28,617 | 42 | 16.0% |
Huntley, IL | 27,413 | 42 | 16.0% |
Algonquin, IL | 30,848 | 42 | 16.0% |
Lakewood, IL | 4,013 | 42 | 16.0% |
Streamwood, IL | 39,917 | 55 | 10.0% |
City | Population | Air Quality Index | National Avg. |
Marion, IA | 39,910 | 39 | 22.0% |
Friendswood, TX | 39,893 | 52 | 4.0% |
Chelsea, MA | 39,878 | 43 | 14.0% |
The Acreage, FL | 39,863 | 36 | 28.0% |
Calexico, CA | 39,841 | 58 | 16.0% |
Streamwood, IL | 39,917 | 55 | 10.0% |