| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 55°F | 75°F | 65°F | 1.7" |
| February | 51°F | 75°F | 63°F | 2.4" |
| March | 58°F | 78°F | 68°F | 5.3" |
| April | 58°F | 81°F | 70°F | 8.9" |
| May | 67°F | 84°F | 76°F | 6.5" |
| June | 72°F | 87°F | 79°F | 10.4" |
| July | 74°F | 90°F | 82°F | 11.4" |
| August | 74°F | 91°F | 82°F | 5.5" |
| September | 73°F | 88°F | 80°F | 5.3" |
| October | 72°F | 85°F | 78°F | 8.0" |
| November | 62°F | 79°F | 70°F | 6.0" |
| December | 56°F | 76°F | 66°F | 7.8" |
| Index | Rio | Florida | National |
| Air quality index | 36 | 35 | 42 |
| Pollution index | 30,648,300 | 7,570,785 | 2,726,193 |
| Measurement | Total |
| Days measured | 353 |
| Days with good air quality | 324 |
| Days with moderate air quality | 29 |
| Days w/ poor A.Q. for sensitive groups | 0 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.040% |
| Benzene | 0.370% |
| Carbon Tetrachloride | 0.080% |
| Lead | 0.150% |
| Mercury | 0.030% |
| City | Population | Air Quality Index | National Avg. |
| Jupiter Island, FL | 862 | 36 | 28.0% |
| North River Shores, FL | 3,895 | 36 | 28.0% |
| Port Salerno, FL | 12,070 | 36 | 28.0% |
| Fort Pierce, FL | 45,855 | 36 | 28.0% |
| Hutchinson Island South, FL | 5,025 | 36 | 28.0% |
| Rio, FL | 705 | 36 | 28.0% |
| City | Population | Air Quality Index | National Avg. |
| Kasilof, AK | 705 | 31 | 38.0% |
| Cactus Forest, AZ | 705 | 47 | 6.0% |
| Poulan, GA | 705 | 40 | 20.0% |
| Dawson, IL | 705 | 40 | 20.0% |
| Avoca, IN | 705 | 42 | 16.0% |
| Rio, FL | 705 | 36 | 28.0% |
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