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| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 30°F | 60°F | 44°F | 1.6" |
| February | 34°F | 64°F | 48°F | 1.2" |
| March | 40°F | 70°F | 54°F | 0.6" |
| April | 44°F | 76°F | 59°F | 0.3" |
| May | 53°F | 84°F | 68°F | 0.1" |
| June | 62°F | 94°F | 78°F | 0.0" |
| July | 68°F | 100°F | 84°F | 0.2" |
| August | 65°F | 99°F | 83°F | 0.0" |
| September | 56°F | 93°F | 75°F | 0.2" |
| October | 46°F | 81°F | 63°F | 0.4" |
| November | 36°F | 70°F | 52°F | 0.4" |
| December | 30°F | 59°F | 43°F | 1.0" |
| Index | Rosamond | California | National |
| Air quality index | 67 | 55 | 42 |
| Pollution index | 21,095,500 | 10,473,190 | 2,726,193 |
| Measurement | Total |
| Days measured | 365 |
| Days with good air quality | 119 |
| Days with moderate air quality | 151 |
| Days w/ poor A.Q. for sensitive groups | 87 |
| Days with unhealthy air quality | 6 |
| Pollutant | Total |
| Arsenic | 1.700% |
| Benzene | 0.350% |
| Carbon Tetrachloride | 0.004% |
| Lead | 0.580% |
| Mercury | 1.550% |
| City | Population | Air Quality Index | National Avg. |
| Mojave, CA | 3,780 | 67 | 34.0% |
| Elizabeth Lake, CA | 1,632 | 72 | 44.0% |
| Lancaster, CA | 157,697 | 72 | 44.0% |
| Quartz Hill, CA | 10,405 | 72 | 44.0% |
| Rosamond, CA | 20,255 | 67 | 34.0% |
| City | Population | Air Quality Index | National Avg. |
| American Canyon, CA | 20,256 | 40 | 20.0% |
| Columbia Heights, MN | 20,247 | 46 | 8.0% |
| Tukwila, WA | 20,265 | 45 | 10.0% |
| Agoura Hills, CA | 20,269 | 72 | 44.0% |
| Rolla, MO | 20,273 | 39 | 22.0% |
| Rosamond, CA | 20,255 | 67 | 34.0% |
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