| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 48°F | 62°F | 54°F | 4.0" |
| February | 49°F | 65°F | 56°F | 7.4" |
| March | 54°F | 70°F | 61°F | 5.9" |
| April | 62°F | 76°F | 69°F | 1.9" |
| May | 70°F | 83°F | 76°F | 4.6" |
| June | 76°F | 88°F | 82°F | 3.1" |
| July | 78°F | 89°F | 83°F | 7.7" |
| August | 78°F | 89°F | 83°F | 8.5" |
| September | 76°F | 86°F | 81°F | 3.5" |
| October | 67°F | 80°F | 73°F | 6.6" |
| November | 56°F | 70°F | 63°F | 3.0" |
| December | 52°F | 67°F | 59°F | 5.6" |
| Index | Triumph | Louisiana | National |
| Air quality index | 45 | 106 | 42 |
| Pollution index | 3,881,730 | 2,526,475 | 2,726,193 |
| Measurement | Total |
| Days measured | 365 |
| Days with good air quality | 229 |
| Days with moderate air quality | 134 |
| Days w/ poor A.Q. for sensitive groups | 2 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.000% |
| Benzene | 0.040% |
| Carbon Tetrachloride | 0.002% |
| Lead | 0.010% |
| Mercury | 0.000% |
| City | Population | Air Quality Index | National Avg. |
| Boothville, LA | 618 | 45 | 10.0% |
| Venice, LA | 289 | 45 | 10.0% |
| Buras, LA | 917 | 45 | 10.0% |
| Empire, LA | 1,147 | 45 | 10.0% |
| Port Sulphur, LA | 2,224 | 45 | 10.0% |
| Triumph, LA | 331 | 45 | 10.0% |
| City | Population | Air Quality Index | National Avg. |
| Shaktoolik, AK | 331 | 38 | 24.0% |
| Limestone, FL | 331 | 36 | 28.0% |
| Kukuihaele, HI | 331 | 16 | 68.0% |
| Summerfield, IL | 331 | 54 | 8.0% |
| Freeborn, MN | 331 | 15 | 70.0% |
| Triumph, LA | 331 | 45 | 10.0% |