| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 40°F | 61°F | 49°F | 0.7" |
| February | 44°F | 66°F | 53°F | 0.7" |
| March | 51°F | 73°F | 60°F | 1.3" |
| April | 57°F | 80°F | 67°F | 2.8" |
| May | 64°F | 85°F | 73°F | 4.0" |
| June | 70°F | 91°F | 80°F | 0.6" |
| July | 71°F | 92°F | 81°F | 0.7" |
| August | 72°F | 94°F | 82°F | 1.0" |
| September | 67°F | 87°F | 76°F | 4.1" |
| October | 60°F | 80°F | 68°F | 0.0" |
| November | 50°F | 69°F | 58°F | 1.1" |
| December | 42°F | 61°F | 50°F | 0.8" |
| Index | Leakey | Texas | National |
| Air quality index | 49 | 52 | 42 |
| Pollution index | 683,072 | 2,009,300 | 2,726,193 |
| Measurement | Total |
| Days measured | 365 |
| Days with good air quality | 196 |
| Days with moderate air quality | 163 |
| Days w/ poor A.Q. for sensitive groups | 5 |
| Days with unhealthy air quality | 1 |
| Pollutant | Total |
| Arsenic | 0.001% |
| Benzene | 0.010% |
| Carbon Tetrachloride | 0.001% |
| Lead | 0.010% |
| Mercury | 0.000% |
| City | Population | Air Quality Index | National Avg. |
| Camp Wood, TX | 1,015 | 25 | 50.0% |
| Leakey, TX | 555 | 49 | 2.0% |
| City | Population | Air Quality Index | National Avg. |
| Woodlawn, IL | 555 | 43 | 14.0% |
| North Chevy Chase, MD | 555 | 47 | 6.0% |
| Naples, ME | 555 | 31 | 38.0% |
| Big Bay, MI | 555 | 8 | 84.0% |
| Brownton, MN | 555 | 46 | 8.0% |
| Leakey, TX | 555 | 49 | 2.0% |
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