| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 16°F | 31°F | 23°F | 2.8" |
| February | 17°F | 32°F | 24°F | 2.8" |
| March | 30°F | 47°F | 37°F | 4.6" |
| April | 39°F | 61°F | 49°F | 5.8" |
| May | 50°F | 72°F | 60°F | 5.3" |
| June | 59°F | 80°F | 69°F | 5.6" |
| July | 63°F | 82°F | 72°F | 5.8" |
| August | 61°F | 81°F | 70°F | 5.9" |
| September | 54°F | 75°F | 63°F | 3.7" |
| October | 43°F | 63°F | 52°F | 5.8" |
| November | 32°F | 49°F | 39°F | 4.0" |
| December | 21°F | 34°F | 27°F | 3.1" |
| Index | Kirkland | Illinois | National |
| Air quality index | 42 | 41 | 42 |
| Pollution index | 1,721,090 | 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 | 0.001% |
| Benzene | 0.020% |
| Carbon Tetrachloride | 0.001% |
| Lead | 0.002% |
| Mercury | 0.000% |
| City | Population | Air Quality Index | National Avg. |
| Garden Prairie, IL | 265 | 42 | 16.0% |
| Creston, IL | 535 | 42 | 16.0% |
| Maple Park, IL | 1,599 | 42 | 16.0% |
| Cherry Valley, IL | 2,783 | 42 | 16.0% |
| Monroe Center, IL | 384 | 42 | 16.0% |
| Kirkland, IL | 1,524 | 42 | 16.0% |
| City | Population | Air Quality Index | National Avg. |
| Parsons, WV | 1,524 | 31 | 38.0% |
| Saint-Ulric, QC | 1,524 | n/a | |
| Amherst, QC | 1,524 | n/a | |
| Lake Hamilton, FL | 1,525 | 36 | 28.0% |
| Collings Lakes, NJ | 1,525 | 40 | 20.0% |
| Kirkland, IL | 1,524 | 42 | 16.0% |
Here are the best places to live in Illinois
Check out the 10 most dangerous cities in Illinois
See the best places to live in Kirkland
Most Dangerous States In The US