| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 25°F | 38°F | 31°F | 2.0" |
| February | 28°F | 43°F | 34°F | 1.4" |
| March | 32°F | 52°F | 41°F | 2.4" |
| April | 36°F | 61°F | 47°F | 1.3" |
| May | 43°F | 72°F | 57°F | 1.2" |
| June | 50°F | 78°F | 64°F | 2.0" |
| July | 57°F | 90°F | 73°F | 0.5" |
| August | 55°F | 88°F | 71°F | 0.4" |
| September | 47°F | 78°F | 61°F | 0.6" |
| October | 39°F | 62°F | 49°F | 1.7" |
| November | 32°F | 47°F | 39°F | 2.0" |
| December | 25°F | 37°F | 30°F | 2.4" |
| Index | Mead | Washington | National |
| Air quality index | 43 | 36 | 42 |
| Pollution index | 408,717 | 4,541,850 | 2,726,193 |
| Measurement | Total |
| Days measured | 365 |
| Days with good air quality | 252 |
| Days with moderate air quality | 111 |
| Days w/ poor A.Q. for sensitive groups | 2 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.000% |
| Benzene | 0.010% |
| Carbon Tetrachloride | 0.000% |
| Lead | 0.001% |
| Mercury | 0.000% |
| City | Population | Air Quality Index | National Avg. |
| Fairchild AFB, WA | 3,464 | 43 | 14.0% |
| Green Bluff, WA | 366 | 43 | 14.0% |
| Spokane, WA | 219,185 | 43 | 14.0% |
| Four Lakes, WA | 515 | 43 | 14.0% |
| Liberty Lake, WA | 10,381 | 43 | 14.0% |
| Mead, WA | 6,995 | 43 | 14.0% |
| City | Population | Air Quality Index | National Avg. |
| Nibley, UT | 6,993 | 44 | 12.0% |
| Pinehurst, MA | 6,997 | 43 | 14.0% |
| Spring Hill, KS | 6,992 | 47 | 6.0% |
| Nuevo, CA | 6,999 | 89 | 78.0% |
| Ormond-by-the-Sea, FL | 6,999 | 31 | 38.0% |
| Mead, WA | 6,995 | 43 | 14.0% |
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