Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
January | 12°F | 27°F | 19°F | 0.7" |
February | 13°F | 29°F | 21°F | 0.7" |
March | 29°F | 45°F | 36°F | 1.7" |
April | 39°F | 60°F | 48°F | 2.8" |
May | 50°F | 71°F | 60°F | 2.4" |
June | 60°F | 80°F | 70°F | 5.1" |
July | 62°F | 82°F | 72°F | 2.5" |
August | 60°F | 79°F | 69°F | 2.3" |
September | 53°F | 75°F | 63°F | 3.0" |
October | 42°F | 61°F | 50°F | 2.8" |
November | 29°F | 47°F | 37°F | 1.1" |
December | 17°F | 31°F | 24°F | 1.8" |
Index | Tripoli | Iowa | National |
Air quality index | 39 | 39 | 42 |
Pollution index | 530,484 | 1,154,535 | 2,726,193 |
Measurement | Total |
Days measured | 363 |
Days with good air quality | 286 |
Days with moderate air quality | 77 |
Days w/ poor A.Q. for sensitive groups | 0 |
Days with unhealthy air quality | 0 |
Pollutant | Total |
Arsenic | 0.000% |
Benzene | 0.010% |
Carbon Tetrachloride | 0.001% |
Lead | 0.002% |
Mercury | 0.000% |
City | Population | Air Quality Index | National Avg. |
Readlyn, IA | 804 | 39 | 22.0% |
Fredericksburg, IA | 1,122 | 39 | 22.0% |
Sumner, IA | 2,224 | 39 | 22.0% |
Denver, IA | 1,759 | 39 | 22.0% |
Frederika, IA | 315 | 39 | 22.0% |
Tripoli, IA | 1,337 | 39 | 22.0% |
City | Population | Air Quality Index | National Avg. |
Diamond Ridge, AK | 1,336 | 31 | 38.0% |
Sultana, CA | 1,336 | 66 | 32.0% |
Byers, CO | 1,338 | 58 | 16.0% |
Dutch Island, GA | 1,338 | 39 | 22.0% |
Irvington, KY | 1,336 | 39 | 22.0% |
Tripoli, IA | 1,337 | 39 | 22.0% |