| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 36°F | 46°F | 41°F | 2.9" |
| February | 35°F | 49°F | 41°F | 1.9" |
| March | 38°F | 52°F | 45°F | 2.3" |
| April | 41°F | 55°F | 47°F | 2.0" |
| May | 46°F | 60°F | 52°F | 1.8" |
| June | 50°F | 63°F | 55°F | 1.8" |
| July | 53°F | 68°F | 59°F | 0.7" |
| August | 53°F | 68°F | 59°F | 1.5" |
| September | 49°F | 65°F | 56°F | 1.4" |
| October | 45°F | 58°F | 51°F | 1.8" |
| November | 40°F | 51°F | 45°F | 3.5" |
| December | 35°F | 46°F | 40°F | 2.2" |
| Index | Port Hadlock-Irondale | Washington | National |
| Air quality index | 34 | 36 | 42 |
| Pollution index | 1,626,160 | 4,541,850 | 2,726,193 |
| Measurement | Total |
| Days measured | 365 |
| Days with good air quality | 341 |
| Days with moderate air quality | 24 |
| Days w/ poor A.Q. for sensitive groups | 0 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.005% |
| Benzene | 0.020% |
| Carbon Tetrachloride | 0.002% |
| Lead | 0.020% |
| Mercury | 0.001% |
| City | Population | Air Quality Index | National Avg. |
| Quilcene, WA | 664 | 18 | 64.0% |
| Coupeville, WA | 1,850 | 24 | 52.0% |
| Camano, WA | 17,073 | 24 | 52.0% |
| Marrowstone, WA | 943 | 24 | 52.0% |
| Cavalero, WA | 5,395 | 24 | 52.0% |
| Port Hadlock-Irondale, WA | 3,329 | 34 | 32.0% |
| City | Population | Air Quality Index | National Avg. |
| Lowville, NY | 3,329 | 35 | 30.0% |
| Winnsboro, TX | 3,330 | 37 | 26.0% |
| Stanhope, NJ | 3,327 | 34 | 32.0% |
| Three Hills, AB | 3,327 | n/a | |
| Glasgow, MT | 3,332 | 34 | 32.0% |
| Port Hadlock-Irondale, WA | 3,329 | 34 | 32.0% |
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