| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 36°F | 46°F | 41°F | 3.8" |
| February | 37°F | 49°F | 42°F | 2.7" |
| March | 39°F | 52°F | 45°F | 4.4" |
| April | 42°F | 57°F | 48°F | 2.8" |
| May | 47°F | 64°F | 54°F | 2.2" |
| June | 51°F | 68°F | 58°F | 1.8" |
| July | 55°F | 74°F | 63°F | 0.7" |
| August | 56°F | 75°F | 63°F | 0.9" |
| September | 53°F | 69°F | 59°F | 2.0" |
| October | 47°F | 59°F | 52°F | 3.6" |
| November | 40°F | 51°F | 45°F | 5.7" |
| December | 35°F | 44°F | 39°F | 4.9" |
| Index | Everett Mall South | Everett | Washington |
| Air quality index | 49 | 49 | 36 |
| Pollution index | 43,367,400 | 43,367,400 | 8,596,989 |
| Measurement | Total |
| Days measured | 365 |
| Days with good air quality | 195 |
| Days with moderate air quality | 162 |
| Days w/ poor A.Q. for sensitive groups | 8 |
| Days with unhealthy air quality |
| Pollutant | Total |
| Arsenic | 0.020% |
| Benzene | 0.790% |
| Carbon Tetrachloride | 0.120% |
| Lead | 0.210% |
| Mercury | 0.180% |
| City, State | Population | Air Quality Index | National Avg. |
| Freeland, WA | 1,642 | 31 | 38% |
| Lake Bosworth, WA | 758 | 31 | 38% |
| Lochsloy, WA | 2,789 | 31 | 38% |
| Canyon Creek, WA | 3,153 | 31 | 38% |
| Granite Falls, WA | 3,458 | 31 | 38% |
| Everett, WA | 106,580 | 49 | 2% |
| City, State | Population | Air Quality Index | National Avg. |
| Palm Bay, FL | 106,573 | 35 | 30% |
| Highlands Ranch, CO | 106,596 | 54 | 8% |
| Norwalk, CA | 106,360 | 74 | 48% |
| Pearland, TX | 106,238 | 52 | 4% |
| North Charleston, SC | 106,113 | 36 | 28% |
| Everett, WA | 106,580 | 49 | 2% |