Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
January | 34°F | 49°F | 40°F | 10.9" |
February | 34°F | 52°F | 41°F | 7.4" |
March | 43°F | 68°F | 53°F | 5.4" |
April | 49°F | 71°F | 59°F | 8.1" |
May | 59°F | 83°F | 70°F | 9.3" |
June | 69°F | 90°F | 79°F | 3.3" |
July | 70°F | 89°F | 79°F | 9.9" |
August | 72°F | 95°F | 82°F | 1.9" |
September | 65°F | 87°F | 74°F | 4.3" |
October | 52°F | 76°F | 62°F | 15.9" |
November | 42°F | 64°F | 51°F | 5.4" |
December | 32°F | 50°F | 39°F | 7.9" |
Index | Portia | Arkansas | National |
Air quality index | 45 | 38 | 42 |
Pollution index | 507,185 | 1,487,822 | 2,726,193 |
Measurement | Total |
Days measured | 365 |
Days with good air quality | 221 |
Days with moderate air quality | 139 |
Days w/ poor A.Q. for sensitive groups | 5 |
Days with unhealthy air quality | 0 |
Pollutant | Total |
Arsenic | 0.001% |
Benzene | 0.010% |
Carbon Tetrachloride | 0.000% |
Lead | 0.002% |
Mercury | 0.000% |
City | Population | Air Quality Index | National Avg. |
Pocahontas, AR | 6,582 | 26 | 48.0% |
O'Kean, AR | 252 | 26 | 48.0% |
Imboden, AR | 805 | 26 | 48.0% |
Ravenden, AR | 426 | 36 | 28.0% |
Black Rock, AR | 854 | 45 | 10.0% |
Portia, AR | 511 | 45 | 10.0% |
City | Population | Air Quality Index | National Avg. |
Rough and Ready, CA | 511 | 44 | 12.0% |
Juliaetta, ID | 511 | 10 | 80.0% |
Mackay, ID | 511 | 27 | 46.0% |
South Range, MI | 511 | 8 | 84.0% |
Smithton, MO | 511 | 38 | 24.0% |
Portia, AR | 511 | 45 | 10.0% |