Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
January | 37°F | 59°F | 46°F | 6.3" |
February | 41°F | 64°F | 50°F | 4.5" |
March | 47°F | 70°F | 57°F | 6.1" |
April | 55°F | 77°F | 65°F | 8.2" |
May | 62°F | 82°F | 71°F | 8.7" |
June | 71°F | 91°F | 80°F | 9.1" |
July | 74°F | 94°F | 83°F | 9.0" |
August | 74°F | 94°F | 83°F | 8.4" |
September | 69°F | 91°F | 79°F | 9.7" |
October | 58°F | 81°F | 68°F | 13.3" |
November | 47°F | 68°F | 56°F | 7.5" |
December | 40°F | 60°F | 48°F | 7.9" |
Index | Rockwall | Texas | National |
Air quality index | 51 | 52 | 42 |
Pollution index | 37,723,200 | 2,009,300 | 2,726,193 |
Measurement | Total |
Days measured | 365 |
Days with good air quality | 181 |
Days with moderate air quality | 155 |
Days w/ poor A.Q. for sensitive groups | 28 |
Days with unhealthy air quality | 1 |
Pollutant | Total |
Arsenic | 0.060% |
Benzene | 0.290% |
Carbon Tetrachloride | 0.220% |
Lead | 0.230% |
Mercury | 0.020% |
City | Population | Air Quality Index | National Avg. |
Fate, TX | 14,300 | 51 | 2.0% |
Lavon, TX | 3,504 | 51 | 2.0% |
Nevada, TX | 872 | 51 | 2.0% |
Sachse, TX | 25,888 | 51 | 2.0% |
Terrell, TX | 18,513 | 51 | 2.0% |
Rockwall, TX | 45,168 | 51 | 2.0% |
City | Population | Air Quality Index | National Avg. |
Pearl City, HI | 45,159 | 30 | 40.0% |
Herriman, UT | 45,211 | 51 | 2.0% |
Cleveland, TN | 45,115 | 1 | 98.0% |
Lake Ridge, VA | 45,111 | 47 | 6.0% |
Hilo, HI | 45,248 | 16 | 68.0% |
Rockwall, TX | 45,168 | 51 | 2.0% |