Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
January | 15°F | 39°F | 26°F | 0.2" |
February | 16°F | 41°F | 27°F | 0.6" |
March | 27°F | 56°F | 39°F | 1.0" |
April | 36°F | 63°F | 48°F | 3.1" |
May | 46°F | 73°F | 59°F | 4.5" |
June | 58°F | 84°F | 70°F | 3.9" |
July | 62°F | 88°F | 74°F | 3.3" |
August | 59°F | 85°F | 71°F | 3.5" |
September | 50°F | 79°F | 63°F | 2.3" |
October | 38°F | 65°F | 50°F | 2.4" |
November | 25°F | 53°F | 37°F | 0.3" |
December | 14°F | 38°F | 25°F | 0.5" |
Index | Mason City | Nebraska | National |
Air quality index | 19 | 86 | 42 |
Pollution index | 5,232,950 | 590,627 | 2,726,193 |
Measurement | Total |
Days measured | 60 |
Days with good air quality | 55 |
Days with moderate air quality | 5 |
Days w/ poor A.Q. for sensitive groups | |
Days with unhealthy air quality |
Pollutant | Total |
Arsenic | 0.010% |
Benzene | 0.080% |
Carbon Tetrachloride | 0.010% |
Lead | 0.010% |
Mercury | 0.010% |
City | Population | Air Quality Index | National Avg. |
Berwyn, NE | 95 | 19 | 62.0% |
Litchfield, NE | 306 | 19 | 62.0% |
Westerville, NE | 0 | 19 | 62.0% |
Ansley, NE | 568 | 19 | 62.0% |
Arcadia, NE | 364 | 19 | 62.0% |
Mason City, NE | 163 | 19 | 62.0% |
City | Population | Air Quality Index | National Avg. |
Oil Trough, AR | 163 | 45 | 10.0% |
Antares, AZ | 163 | 13 | 74.0% |
Sedgwick, CO | 163 | 19 | 62.0% |
Maunie, IL | 163 | 45 | 10.0% |
Lincolnville, KS | 163 | 22 | 56.0% |
Mason City, NE | 163 | 19 | 62.0% |