| 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 | Huntley | Illinois | National |
| Air quality index | 42 | 41 | 42 |
| Pollution index | 543,516 | 3,148,694 | 2,726,193 |
| Measurement | Total |
| Days measured | 341 |
| Days with good air quality | 240 |
| Days with moderate air quality | 100 |
| Days w/ poor A.Q. for sensitive groups | 1 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.000% |
| Benzene | 0.004% |
| Carbon Tetrachloride | 0.000% |
| Lead | 0.000% |
| Mercury | 0.000% |
| City | Population | Air Quality Index | National Avg. |
| Holiday Hills, IL | 653 | 39 | 22.0% |
| Oakwood Hills, IL | 2,543 | 39 | 22.0% |
| Volo, IL | 5,498 | 39 | 22.0% |
| Prairie Grove, IL | 2,023 | 39 | 22.0% |
| Island Lake, IL | 8,112 | 39 | 22.0% |
| Huntley, IL | 27,413 | 42 | 16.0% |
| City | Population | Air Quality Index | National Avg. |
| Oak Forest, IL | 27,403 | 55 | 10.0% |
| Anderson, SC | 27,387 | 31 | 38.0% |
| Short Pump, VA | 27,385 | 44 | 12.0% |
| Bergenfield, NJ | 27,375 | 51 | 2.0% |
| Mililani Town, HI | 27,459 | 30 | 40.0% |
| Huntley, IL | 27,413 | 42 | 16.0% |
Here are the best places to live in Illinois
Most Dangerous States In The US
See the best places to live in Huntley
These are the 10 cheapest cities in Illinois