| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 18°F | 43°F | 29°F | 0.5" |
| February | 21°F | 46°F | 33°F | 1.4" |
| March | 35°F | 61°F | 46°F | 2.4" |
| April | 44°F | 70°F | 56°F | 4.4" |
| May | 54°F | 78°F | 65°F | 5.1" |
| June | 65°F | 88°F | 76°F | 4.8" |
| July | 68°F | 91°F | 79°F | 4.5" |
| August | 65°F | 90°F | 77°F | 3.7" |
| September | 56°F | 82°F | 68°F | 3.9" |
| October | 44°F | 70°F | 56°F | 3.1" |
| November | 33°F | 58°F | 44°F | 1.6" |
| December | 23°F | 45°F | 33°F | 1.5" |
| Index | Lawrence | Kansas | National |
| Air quality index | 41 | 47 | 42 |
| Pollution index | 1,138,800 | 989,153 | 2,726,193 |
| Measurement | Total |
| Days measured | 365 |
| Days with good air quality | 294 |
| Days with moderate air quality | 70 |
| Days w/ poor A.Q. for sensitive groups | 0 |
| Days with unhealthy air quality | 1 |
| Pollutant | Total |
| Arsenic | 0.001% |
| Benzene | 0.020% |
| Carbon Tetrachloride | 0.004% |
| Lead | 0.010% |
| Mercury | 0.000% |
| City | Population | Air Quality Index | National Avg. |
| Lecompton, KS | 857 | 41 | 18.0% |
| Baldwin City, KS | 4,684 | 41 | 18.0% |
| Perry, KS | 1,277 | 41 | 18.0% |
| Edgerton, KS | 1,750 | 47 | 6.0% |
| Linwood, KS | 420 | 47 | 6.0% |
| Lawrence, KS | 97,348 | 41 | 18.0% |
| City | Population | Air Quality Index | National Avg. |
| Yuma, AZ | 97,428 | 45 | 10.0% |
| Bend, OR | 97,032 | 20 | 60.0% |
| Edinburg, TX | 97,734 | 42 | 16.0% |
| Albany, NY | 96,860 | 37 | 26.0% |
| Nampa, ID | 96,825 | 36 | 28.0% |
| Lawrence, KS | 97,348 | 41 | 18.0% |
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