Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
January | 20°F | 37°F | 28°F | 3.3" |
February | 20°F | 38°F | 28°F | 3.0" |
March | 29°F | 49°F | 38°F | 3.2" |
April | 39°F | 63°F | 51°F | 3.8" |
May | 50°F | 73°F | 61°F | 3.7" |
June | 60°F | 82°F | 71°F | 4.5" |
July | 63°F | 85°F | 74°F | 4.5" |
August | 62°F | 84°F | 73°F | 4.4" |
September | 56°F | 77°F | 66°F | 4.2" |
October | 45°F | 66°F | 55°F | 4.5" |
November | 35°F | 54°F | 44°F | 3.4" |
December | 26°F | 41°F | 33°F | 3.5" |
Index | North Royalton | Ohio | National |
Air quality index | 50 | 40 | 42 |
Pollution index | 28,421,300 | 4,472,386 | 2,726,193 |
Measurement | Total |
Days measured | 365 |
Days with good air quality | 185 |
Days with moderate air quality | 173 |
Days w/ poor A.Q. for sensitive groups | 7 |
Days with unhealthy air quality | 0 |
Pollutant | Total |
Arsenic | 0.220% |
Benzene | 0.280% |
Carbon Tetrachloride | 0.170% |
Lead | 0.250% |
Mercury | 0.090% |
City | Population | Air Quality Index | National Avg. |
Peninsula, OH | 654 | 43 | 14.0% |
Fairlawn, OH | 7,536 | 43 | 14.0% |
Silver Lake, OH | 2,496 | 43 | 14.0% |
Richfield, OH | 3,767 | 43 | 14.0% |
Medina, OH | 26,026 | 43 | 14.0% |
North Royalton, OH | 30,179 | 50 | = 100 |
City | Population | Air Quality Index | National Avg. |
Elizabethtown, KY | 30,179 | 39 | 22.0% |
Ballwin, MO | 30,177 | 54 | 8.0% |
Lawrenceville, GA | 30,125 | 37 | 26.0% |
Fountain, CO | 30,240 | 45 | 10.0% |
San Lorenzo, CA | 30,117 | 40 | 20.0% |
North Royalton, OH | 30,179 | 50 | = 100 |