Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
January | 34°F | 57°F | 44°F | 4.7" |
February | 32°F | 56°F | 43°F | 4.9" |
March | 40°F | 67°F | 53°F | 9.2" |
April | 46°F | 73°F | 59°F | 5.1" |
May | 54°F | 80°F | 67°F | 3.1" |
June | 65°F | 87°F | 75°F | 7.7" |
July | 69°F | 90°F | 78°F | 6.0" |
August | 71°F | 93°F | 81°F | 3.6" |
September | 63°F | 88°F | 75°F | 1.5" |
October | 54°F | 77°F | 64°F | 3.9" |
November | 39°F | 66°F | 52°F | 4.6" |
December | 34°F | 58°F | 44°F | 7.2" |
Index | Rock Hill | South Carolina | National |
Air quality index | 49 | 37 | 42 |
Pollution index | 5,729,570 | 3,620,438 | 2,726,193 |
Measurement | Total |
Days measured | 365 |
Days with good air quality | 200 |
Days with moderate air quality | 147 |
Days w/ poor A.Q. for sensitive groups | 18 |
Days with unhealthy air quality | 0 |
Pollutant | Total |
Arsenic | 4.280% |
Benzene | 0.050% |
Carbon Tetrachloride | 0.020% |
Lead | 0.130% |
Mercury | 0.040% |
City | Population | Air Quality Index | National Avg. |
York, SC | 8,287 | 36 | 28.0% |
Lowrys, SC | 247 | 36 | 28.0% |
McConnells, SC | 293 | 36 | 28.0% |
India Hook, SC | 3,762 | 49 | 2.0% |
Riverview, SC | 2,479 | 49 | 2.0% |
Rock Hill, SC | 74,410 | 49 | 2.0% |
City | Population | Air Quality Index | National Avg. |
Rancho Cordova, CA | 74,394 | 52 | 4.0% |
Buckeye, AZ | 74,467 | 74 | 48.0% |
Sarnia, ON | 74,477 | n/a | |
Rochester Hills, MI | 74,340 | 56 | 12.0% |
Bolingbrook, IL | 74,319 | 55 | 10.0% |
Rock Hill, SC | 74,410 | 49 | 2.0% |