Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
January | 35°F | 62°F | 49°F | 2.2" |
February | 34°F | 64°F | 49°F | 2.2" |
March | 36°F | 68°F | 51°F | 1.3" |
April | 38°F | 72°F | 54°F | 0.7" |
May | 42°F | 77°F | 59°F | 0.4" |
June | 46°F | 88°F | 68°F | 0.1" |
July | 55°F | 92°F | 74°F | 0.2" |
August | 55°F | 93°F | 74°F | 0.2" |
September | 52°F | 89°F | 70°F | 0.5" |
October | 44°F | 79°F | 61°F | 0.6" |
November | 39°F | 70°F | 54°F | 0.8" |
December | 35°F | 62°F | 48°F | 2.8" |
Index | Descanso | California | National |
Air quality index | 64 | 55 | 42 |
Pollution index | 162,740 | 10,473,190 | 2,726,193 |
Measurement | Total |
Days measured | 365 |
Days with good air quality | 87 |
Days with moderate air quality | 253 |
Days w/ poor A.Q. for sensitive groups | 23 |
Days with unhealthy air quality | 2 |
Pollutant | Total |
Arsenic | 0.000% |
Benzene | 0.003% |
Carbon Tetrachloride | 0.000% |
Lead | 0.000% |
Mercury | 0.000% |
City | Population | Air Quality Index | National Avg. |
Jamul, CA | 5,776 | 64 | 28.0% |
Alpine, CA | 14,958 | 64 | 28.0% |
San Diego Country Estates, CA | 9,752 | 64 | 28.0% |
Julian, CA | 1,318 | 64 | 28.0% |
Crest, CA | 2,721 | 64 | 28.0% |
Descanso, CA | 1,398 | 64 | 28.0% |
City | Population | Air Quality Index | National Avg. |
Payson, IL | 1,398 | 41 | 18.0% |
Philo, IL | 1,398 | 42 | 16.0% |
Brookston, IN | 1,398 | 42 | 16.0% |
Okarche, OK | 1,398 | 48 | 4.0% |
Aptos Hills-Larkin Valley, CA | 1,397 | 35 | 30.0% |
Descanso, CA | 1,398 | 64 | 28.0% |