| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 41°F | 71°F | 55°F | 0.4" |
| February | 46°F | 76°F | 60°F | 0.2" |
| March | 51°F | 83°F | 67°F | 0.1" |
| April | 56°F | 88°F | 72°F | 0.0" |
| May | 62°F | 96°F | 79°F | 0.1" |
| June | 71°F | 106°F | 89°F | 0.0" |
| July | 80°F | 109°F | 94°F | 0.2" |
| August | 80°F | 109°F | 94°F | 0.3" |
| September | 73°F | 104°F | 88°F | 0.1" |
| October | 61°F | 92°F | 76°F | 0.1" |
| November | 50°F | 81°F | 64°F | 0.1" |
| December | 42°F | 70°F | 55°F | 0.4" |
| Index | Calipatria | California | National |
| Air quality index | 58 | 55 | 42 |
| Pollution index | 6,200,930 | 10,473,190 | 2,726,193 |
| Measurement | Total |
| Days measured | 365 |
| Days with good air quality | 125 |
| Days with moderate air quality | 219 |
| Days w/ poor A.Q. for sensitive groups | 19 |
| Days with unhealthy air quality | 2 |
| Pollutant | Total |
| Arsenic | 0.200% |
| Benzene | 0.130% |
| Carbon Tetrachloride | 0.000% |
| Lead | 0.090% |
| Mercury | 0.070% |
| City | Population | Air Quality Index | National Avg. |
| Westmorland, CA | 2,680 | 58 | 16.0% |
| Niland, CA | 743 | 58 | 16.0% |
| Brawley, CA | 25,942 | 58 | 16.0% |
| Calipatria, CA | 7,260 | 58 | 16.0% |
| City | Population | Air Quality Index | National Avg. |
| McNab/Braeside, ON | 7,260 | n/a | |
| Kahaluu-Keauhou, HI | 7,258 | 16 | 68.0% |
| Pleasantville, NY | 7,256 | 43 | 14.0% |
| Crystal City, TX | 7,256 | 25 | 50.0% |
| Whitemarsh Island, GA | 7,264 | 39 | 22.0% |
| Calipatria, CA | 7,260 | 58 | 16.0% |
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