Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
January | 6°F | 24°F | 15°F | 0.5" |
February | 5°F | 26°F | 15°F | 0.3" |
March | 19°F | 41°F | 30°F | 1.1" |
April | 31°F | 55°F | 42°F | 2.3" |
May | 42°F | 68°F | 54°F | 3.2" |
June | 51°F | 75°F | 63°F | 4.8" |
July | 55°F | 80°F | 67°F | 4.9" |
August | 53°F | 77°F | 65°F | 5.0" |
September | 45°F | 70°F | 57°F | 3.2" |
October | 36°F | 57°F | 45°F | 2.6" |
November | 25°F | 42°F | 33°F | 1.6" |
December | 12°F | 27°F | 20°F | 1.2" |
Index | Merrill | Wisconsin | National |
Air quality index | 34 | 69 | 42 |
Pollution index | 4,968,600 | 2,842,418 | 2,726,193 |
Measurement | Total |
Days measured | 205 |
Days with good air quality | 196 |
Days with moderate air quality | 9 |
Days w/ poor A.Q. for sensitive groups | 0 |
Days with unhealthy air quality | 0 |
Pollutant | Total |
Arsenic | 0.020% |
Benzene | 0.060% |
Carbon Tetrachloride | 0.010% |
Lead | 0.030% |
Mercury | 0.040% |
City | Population | Air Quality Index | National Avg. |
Brokaw, WI | 237 | 34 | 32.0% |
Maine, WI | 2,577 | 34 | 32.0% |
Merrill, WI | 9,081 | 34 | 32.0% |
City | Population | Air Quality Index | National Avg. |
Boulder Hill, IL | 9,081 | 55 | 10.0% |
Innsbrook, VA | 9,081 | 44 | 12.0% |
San Elizario, TX | 9,079 | 53 | 6.0% |
Saint-Rémi, QC | 9,079 | n/a | |
Rochelle, IL | 9,083 | 42 | 16.0% |
Merrill, WI | 9,081 | 34 | 32.0% |