| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 36°F | 56°F | 45°F | 6.3" |
| February | 40°F | 62°F | 50°F | 1.6" |
| March | 49°F | 72°F | 59°F | 11.3" |
| April | 53°F | 75°F | 63°F | 13.0" |
| May | 64°F | 82°F | 73°F | 7.5" |
| June | 71°F | 91°F | 81°F | 13.7" |
| July | 72°F | 93°F | 82°F | 9.9" |
| August | 74°F | 96°F | 85°F | 5.1" |
| September | 69°F | 93°F | 81°F | 11.7" |
| October | 56°F | 82°F | 68°F | 4.3" |
| November | 47°F | 72°F | 59°F | 5.6" |
| December | 35°F | 61°F | 47°F | 1.9" |
| Index | Newark | Texas | National |
| Air quality index | 33 | 52 | 42 |
| Pollution index | 1,399,310 | 2,009,300 | 2,726,193 |
| Measurement | Total |
| Days measured | 365 |
| Days with good air quality | 329 |
| Days with moderate air quality | 33 |
| Days w/ poor A.Q. for sensitive groups | 3 |
| Days with unhealthy air quality |
| Pollutant | Total |
| Arsenic | 0.003% |
| Benzene | 0.020% |
| Carbon Tetrachloride | 0.001% |
| Lead | 0.010% |
| Mercury | 0.002% |
| City | Population | Air Quality Index | National Avg. |
| Azle, TX | 13,412 | 33 | 34.0% |
| Lakeside town (San Patricio County), TX | 316 | 33 | 34.0% |
| Boyd, TX | 1,424 | 33 | 34.0% |
| Decatur, TX | 7,200 | 33 | 34.0% |
| Pelican Bay, TX | 1,657 | 33 | 34.0% |
| Newark, TX | 1,223 | 33 | 34.0% |
| City | Population | Air Quality Index | National Avg. |
| Ash Flat, AR | 1,223 | 36 | 28.0% |
| Pomona Park, FL | 1,223 | 17 | 66.0% |
| Cottonwood, MN | 1,223 | 32 | 36.0% |
| Maidstone, SK | 1,223 | n/a | |
| Sand Point, AK | 1,222 | 31 | 38.0% |
| Newark, TX | 1,223 | 33 | 34.0% |