Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
January | 15°F | 36°F | 25°F | 3.2" |
February | 15°F | 37°F | 26°F | 4.2" |
March | 24°F | 44°F | 34°F | 4.0" |
April | 34°F | 57°F | 45°F | 5.0" |
May | 44°F | 67°F | 55°F | 4.5" |
June | 53°F | 75°F | 63°F | 5.8" |
July | 60°F | 82°F | 70°F | 4.3" |
August | 58°F | 80°F | 69°F | 4.4" |
September | 51°F | 74°F | 62°F | 4.1" |
October | 41°F | 62°F | 51°F | 6.9" |
November | 31°F | 52°F | 41°F | 4.4" |
December | 21°F | 40°F | 30°F | 5.3" |
Index | West Bayside | Portland | Maine |
Air quality index | 40 | 40 | 33 |
Pollution index | 2,043,700 | 2,043,700 | 2,555,853 |
Measurement | Total |
Days measured | 365 |
Days with good air quality | 308 |
Days with moderate air quality | 56 |
Days w/ poor A.Q. for sensitive groups | 1 |
Days with unhealthy air quality | 0 |
Pollutant | Total |
Arsenic | 0.030% |
Benzene | 0.020% |
Carbon Tetrachloride | 0.003% |
Lead | 0.030% |
Mercury | 0.002% |
City, State | Population | Air Quality Index | National Avg. |
Gorham, ME | 6,331 | 40 | 20% |
South Windham, ME | 1,117 | 40 | 20% |
Cousins Island, ME | 659 | 40 | 20% |
Freeport, ME | 1,527 | 40 | 20% |
Yarmouth, ME | 5,709 | 40 | 20% |
Portland, ME | 66,649 | 40 | 20% |
City, State | Population | Air Quality Index | National Avg. |
Palo Alto, CA | 66,649 | 43 | 14% |
Camarillo, CA | 66,630 | 46 | 8% |
Woodbury, MN | 66,699 | 46 | 8% |
South San Francisco, CA | 66,587 | 40 | 20% |
Oshkosh, WI | 66,713 | 36 | 28% |
Portland, ME | 66,649 | 40 | 20% |