Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
January | 22°F | 37°F | 29°F | 11.1" |
February | 17°F | 32°F | 25°F | 2.6" |
March | 31°F | 50°F | 39°F | 6.7" |
April | 39°F | 62°F | 50°F | 7.1" |
May | 48°F | 74°F | 61°F | 1.6" |
June | 61°F | 85°F | 73°F | 5.4" |
July | 61°F | 84°F | 73°F | 5.5" |
August | 63°F | 86°F | 74°F | 10.2" |
September | 56°F | 79°F | 67°F | 5.9" |
October | 47°F | 67°F | 57°F | 3.2" |
November | 33°F | 52°F | 43°F | 5.1" |
December | 22°F | 36°F | 29°F | 3.3" |
Index | St. Johns | Ohio | National |
Air quality index | 39 | 40 | 42 |
Pollution index | 750,178 | 4,472,386 | 2,726,193 |
Measurement | Total |
Days measured | 364 |
Days with good air quality | 303 |
Days with moderate air quality | 61 |
Days w/ poor A.Q. for sensitive groups | 0 |
Days with unhealthy air quality | 0 |
Pollutant | Total |
Arsenic | 0.001% |
Benzene | 0.010% |
Carbon Tetrachloride | 0.002% |
Lead | 0.002% |
Mercury | 0.000% |
City | Population | Air Quality Index | National Avg. |
Anna, OH | 1,608 | 39 | 22.0% |
Jackson Center, OH | 1,575 | 39 | 22.0% |
New Knoxville, OH | 1,125 | 39 | 22.0% |
Cridersville, OH | 1,976 | 39 | 22.0% |
Lafayette CDP, OH | 256 | 39 | 22.0% |
St. Johns, OH | 178 | 39 | 22.0% |
City | Population | Air Quality Index | National Avg. |
Kaktovik, AK | 178 | 38 | 24.0% |
Kenny Lake, AK | 178 | 31 | 38.0% |
Gaylesville, AL | 178 | 39 | 22.0% |
Mount Vernon, AR | 178 | 45 | 10.0% |
Ravenden Springs, AR | 178 | 26 | 48.0% |
St. Johns, OH | 178 | 39 | 22.0% |