| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 40°F | 63°F | 50°F | 8.8" |
| February | 44°F | 69°F | 55°F | 2.4" |
| March | 50°F | 73°F | 60°F | 7.4" |
| April | 57°F | 81°F | 68°F | 6.4" |
| May | 63°F | 85°F | 73°F | 12.0" |
| June | 72°F | 93°F | 82°F | 5.7" |
| July | 74°F | 96°F | 84°F | 2.8" |
| August | 74°F | 97°F | 85°F | 12.7" |
| September | 70°F | 93°F | 81°F | 6.1" |
| October | 60°F | 84°F | 71°F | 5.6" |
| November | 50°F | 71°F | 59°F | 7.9" |
| December | 43°F | 63°F | 52°F | 6.6" |
| Index | Cameron | Texas | National |
| Air quality index | 42 | 52 | 42 |
| Pollution index | 692,760 | 2,009,300 | 2,726,193 |
| Measurement | Total |
| Days measured | 365 |
| Days with good air quality | 284 |
| Days with moderate air quality | 79 |
| Days w/ poor A.Q. for sensitive groups | 2 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.000% |
| Benzene | 0.010% |
| Carbon Tetrachloride | 0.001% |
| Lead | 0.000% |
| Mercury | 0.000% |
| City | Population | Air Quality Index | National Avg. |
| Rosebud, TX | 1,419 | 38 | 24.0% |
| Rogers, TX | 1,396 | 42 | 16.0% |
| Buckholts, TX | 480 | 42 | 16.0% |
| Milano, TX | 637 | 42 | 16.0% |
| Rockdale, TX | 5,505 | 44 | 12.0% |
| Cameron, TX | 5,476 | 42 | 16.0% |
| City | Population | Air Quality Index | National Avg. |
| Preston, ID | 5,477 | 44 | 12.0% |
| Charleston, MO | 5,478 | 44 | 12.0% |
| Buckhannon, WV | 5,473 | 31 | 38.0% |
| Somerdale, NJ | 5,479 | 51 | 2.0% |
| New Holland, PA | 5,479 | 45 | 10.0% |
| Cameron, TX | 5,476 | 42 | 16.0% |
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