Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
January | 49°F | 68°F | 58°F | 5.5" |
February | 54°F | 72°F | 62°F | 4.7" |
March | 60°F | 76°F | 67°F | 3.3" |
April | 66°F | 82°F | 73°F | 0.7" |
May | 70°F | 86°F | 78°F | 2.9" |
June | 76°F | 91°F | 83°F | 4.8" |
July | 79°F | 92°F | 85°F | 10.7" |
August | 78°F | 94°F | 85°F | 2.5" |
September | 74°F | 91°F | 82°F | 4.5" |
October | 67°F | 85°F | 75°F | 5.5" |
November | 59°F | 78°F | 67°F | 10.6" |
December | 52°F | 70°F | 60°F | 4.0" |
Index | Portland | Texas | National |
Air quality index | 42 | 52 | 42 |
Pollution index | 11,617,000 | 2,009,300 | 2,726,193 |
Measurement | Total |
Days measured | 365 |
Days with good air quality | 262 |
Days with moderate air quality | 102 |
Days w/ poor A.Q. for sensitive groups | 1 |
Days with unhealthy air quality | 0 |
Pollutant | Total |
Arsenic | 0.010% |
Benzene | 0.140% |
Carbon Tetrachloride | 0.230% |
Lead | 0.020% |
Mercury | 0.020% |
City | Population | Air Quality Index | National Avg. |
Country Acres, TX | 278 | 42 | 16.0% |
Ingleside on the Bay, TX | 762 | 42 | 16.0% |
La Paloma Addition, TX | 361 | 42 | 16.0% |
Sinton, TX | 5,389 | 42 | 16.0% |
Falman, TX | 8 | 42 | 16.0% |
Portland, TX | 17,807 | 42 | 16.0% |
City | Population | Air Quality Index | National Avg. |
Albert Lea, MN | 17,804 | 15 | 70.0% |
Amsterdam, NY | 17,823 | 37 | 26.0% |
El Dorado, AR | 17,826 | 35 | 30.0% |
Colonia, NJ | 17,782 | 51 | 2.0% |
West Columbia, SC | 17,782 | 43 | 14.0% |
Portland, TX | 17,807 | 42 | 16.0% |