Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
January | 15°F | 33°F | 22°F | 2.3" |
February | 20°F | 39°F | 28°F | 3.1" |
March | 34°F | 58°F | 44°F | 4.4" |
April | 42°F | 65°F | 52°F | 10.1" |
May | 55°F | 77°F | 65°F | 14.1" |
June | 64°F | 85°F | 73°F | 6.4" |
July | 67°F | 90°F | 78°F | 4.8" |
August | 67°F | 87°F | 76°F | 9.9" |
September | 58°F | 82°F | 68°F | 6.9" |
October | 46°F | 69°F | 56°F | 8.1" |
November | 31°F | 54°F | 40°F | 1.8" |
December | 16°F | 34°F | 24°F | 2.8" |
Index | Emerson | Iowa | National |
Air quality index | 40 | 39 | 42 |
Pollution index | 4,349,930 | 1,154,535 | 2,726,193 |
Measurement | Total |
Days measured | 365 |
Days with good air quality | 283 |
Days with moderate air quality | 82 |
Days w/ poor A.Q. for sensitive groups | 0 |
Days with unhealthy air quality | 0 |
Pollutant | Total |
Arsenic | 0.210% |
Benzene | 0.040% |
Carbon Tetrachloride | 0.004% |
Lead | 0.100% |
Mercury | 0.160% |
City | Population | Air Quality Index | National Avg. |
Imogene, IA | 33 | 40 | 20.0% |
Treynor, IA | 942 | 40 | 20.0% |
Silver City, IA | 320 | 40 | 20.0% |
Randolph, IA | 263 | 40 | 20.0% |
Hastings, IA | 154 | 40 | 20.0% |
Emerson, IA | 462 | 40 | 20.0% |
City | Population | Air Quality Index | National Avg. |
West Jefferson, AL | 462 | 53 | 6.0% |
Grimes, CA | 462 | 44 | 12.0% |
Coaldale, CO | 462 | 16 | 68.0% |
Deer Trail, CO | 462 | 58 | 16.0% |
Smithville, GA | 462 | 39 | 22.0% |
Emerson, IA | 462 | 40 | 20.0% |