| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 47°F | 67°F | 56°F | 3.1" |
| February | 47°F | 66°F | 56°F | 2.7" |
| March | 49°F | 66°F | 57°F | 1.4" |
| April | 50°F | 68°F | 58°F | 1.0" |
| May | 53°F | 68°F | 60°F | 0.2" |
| June | 57°F | 70°F | 63°F | 0.0" |
| July | 60°F | 72°F | 65°F | 0.0" |
| August | 60°F | 73°F | 65°F | 0.0" |
| September | 58°F | 74°F | 65°F | 0.1" |
| October | 55°F | 74°F | 64°F | 0.5" |
| November | 50°F | 71°F | 60°F | 0.6" |
| December | 46°F | 66°F | 55°F | 2.1" |
| Index | Oxnard | California | National |
| Air quality index | 46 | 55 | 42 |
| Pollution index | 13,529,800 | 10,473,190 | 2,726,193 |
| Measurement | Total |
| Days measured | 365 |
| Days with good air quality | 214 |
| Days with moderate air quality | 142 |
| Days w/ poor A.Q. for sensitive groups | 9 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.150% |
| Benzene | 0.190% |
| Carbon Tetrachloride | 0.010% |
| Lead | 0.180% |
| Mercury | 0.070% |
| City | Population | Air Quality Index | National Avg. |
| Casa Conejo, CA | 3,184 | 46 | 8.0% |
| San Buenaventura (Ventura), CA | 108,467 | 46 | 8.0% |
| Channel Islands Beach, CA | 2,699 | 46 | 8.0% |
| Oak View, CA | 6,557 | 46 | 8.0% |
| El Rio, CA | 6,506 | 46 | 8.0% |
| Oxnard, CA | 207,722 | 46 | 8.0% |
| City | Population | Air Quality Index | National Avg. |
| Moreno Valley, CA | 208,751 | 89 | 78.0% |
| Rochester, NY | 206,357 | 37 | 26.0% |
| Birmingham, AL | 210,928 | 53 | 6.0% |
| Fayetteville, NC | 211,201 | 41 | 18.0% |
| Oakville, ON | 212,353 | n/a | |
| Oxnard, CA | 207,722 | 46 | 8.0% |
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