Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
January | 39°F | 63°F | 50°F | 3.5" |
February | 42°F | 68°F | 54°F | 3.1" |
March | 47°F | 75°F | 61°F | 1.5" |
April | 52°F | 81°F | 66°F | 0.8" |
May | 61°F | 90°F | 75°F | 0.3" |
June | 71°F | 100°F | 86°F | 0.1" |
July | 78°F | 104°F | 91°F | 10.3" |
August | 75°F | 102°F | 89°F | 6.5" |
September | 68°F | 96°F | 82°F | 5.2" |
October | 56°F | 84°F | 70°F | 2.7" |
November | 46°F | 72°F | 58°F | 3.1" |
December | 38°F | 61°F | 49°F | 4.7" |
Index | Twentynine Palms | California | National |
Air quality index | 89 | 55 | 42 |
Pollution index | 31,575,300 | 10,473,190 | 2,726,193 |
Measurement | Total |
Days measured | 365 |
Days with good air quality | 42 |
Days with moderate air quality | 178 |
Days w/ poor A.Q. for sensitive groups | 79 |
Days with unhealthy air quality | 58 |
Pollutant | Total |
Arsenic | 0.110% |
Benzene | 0.260% |
Carbon Tetrachloride | 0.020% |
Lead | 0.350% |
Mercury | 0.280% |
City | Population | Air Quality Index | National Avg. |
Joshua Tree, CA | 7,786 | 89 | 78.0% |
Twentynine Palms, CA | 26,748 | 89 | 78.0% |
City | Population | Air Quality Index | National Avg. |
Xenia, OH | 26,751 | 47 | 6.0% |
Sanger, CA | 26,744 | 60 | 20.0% |
Chaska, MN | 26,753 | 46 | 8.0% |
Lemon Grove, CA | 26,739 | 64 | 28.0% |
Maple Valley, WA | 26,739 | 45 | 10.0% |
Twentynine Palms, CA | 26,748 | 89 | 78.0% |