| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 45°F | 67°F | 55°F | 0.7" |
| February | 48°F | 73°F | 60°F | 0.5" |
| March | 53°F | 82°F | 67°F | 0.2" |
| April | 59°F | 89°F | 74°F | 0.2" |
| May | 69°F | 98°F | 84°F | 0.1" |
| June | 79°F | 108°F | 95°F | 0.0" |
| July | 86°F | 112°F | 99°F | 0.4" |
| August | 84°F | 110°F | 97°F | 0.7" |
| September | 76°F | 103°F | 89°F | 0.3" |
| October | 63°F | 90°F | 76°F | 0.2" |
| November | 52°F | 78°F | 64°F | 0.2" |
| December | 44°F | 65°F | 54°F | 0.6" |
| Index | Needles | California | National |
| Air quality index | 13 | 55 | 42 |
| Pollution index | 5,460,430 | 10,473,190 | 2,726,193 |
| Measurement | Total |
| Days measured | 364 |
| Days with good air quality | 357 |
| Days with moderate air quality | 7 |
| Days w/ poor A.Q. for sensitive groups | 0 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.000% |
| Benzene | 0.070% |
| Carbon Tetrachloride | 0.010% |
| Lead | 0.040% |
| Mercury | 0.001% |
| City | Population | Air Quality Index | National Avg. |
| Arizona Village, AZ | 822 | 13 | 74.0% |
| Mojave Ranch Estates, AZ | 8 | 13 | 74.0% |
| Topock, AZ | 0 | 13 | 74.0% |
| Fort Mohave, AZ | 16,016 | 13 | 74.0% |
| Oatman, AZ | 43 | 13 | 74.0% |
| Needles, CA | 4,959 | 13 | 74.0% |
| City | Population | Air Quality Index | National Avg. |
| Perry, OK | 4,959 | 40 | 20.0% |
| Buckley, WA | 4,960 | 45 | 10.0% |
| Barling, AR | 4,957 | 36 | 28.0% |
| Prospect, KY | 4,961 | 49 | 2.0% |
| Watseka, IL | 4,956 | 42 | 16.0% |
| Needles, CA | 4,959 | 13 | 74.0% |
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