Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
January | 15°F | 34°F | 25°F | 3.1" |
February | 16°F | 36°F | 25°F | 3.1" |
March | 29°F | 50°F | 38°F | 4.2" |
April | 40°F | 65°F | 52°F | 7.0" |
May | 50°F | 74°F | 62°F | 5.1" |
June | 60°F | 81°F | 70°F | 5.3" |
July | 61°F | 81°F | 71°F | 4.8" |
August | 59°F | 81°F | 69°F | 8.6" |
September | 52°F | 78°F | 64°F | 5.3" |
October | 43°F | 67°F | 54°F | 7.0" |
November | 31°F | 51°F | 40°F | 4.4" |
December | 26°F | 42°F | 34°F | 4.5" |
Index | Richwood | Ohio | National |
Air quality index | 46 | 40 | 42 |
Pollution index | 2,158,180 | 4,472,386 | 2,726,193 |
Measurement | Total |
Days measured | 365 |
Days with good air quality | 237 |
Days with moderate air quality | 127 |
Days w/ poor A.Q. for sensitive groups | 1 |
Days with unhealthy air quality | 0 |
Pollutant | Total |
Arsenic | 0.160% |
Benzene | 0.030% |
Carbon Tetrachloride | 0.003% |
Lead | 0.010% |
Mercury | 0.000% |
City | Population | Air Quality Index | National Avg. |
Ridgeway, OH | 349 | 39 | 22.0% |
La Rue, OH | 581 | 39 | 22.0% |
Mount Victory, OH | 666 | 39 | 22.0% |
New Bloomington, OH | 345 | 39 | 22.0% |
Waldo, OH | 362 | 41 | 18.0% |
Richwood, OH | 2,414 | 46 | 8.0% |
City | Population | Air Quality Index | National Avg. |
Herald Harbor, MD | 2,414 | 46 | 8.0% |
Excelsior, MN | 2,414 | 46 | 8.0% |
Wright-Patterson AFB, OH | 2,414 | 47 | 6.0% |
Edgemont Park, MI | 2,413 | 36 | 28.0% |
Bayard, NM | 2,415 | 37 | 26.0% |
Richwood, OH | 2,414 | 46 | 8.0% |