Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
January | 14°F | 46°F | 29°F | 6.9" |
February | 20°F | 52°F | 35°F | 9.4" |
March | 24°F | 58°F | 40°F | 3.0" |
April | 26°F | 60°F | 43°F | 3.9" |
May | 31°F | 68°F | 49°F | 3.6" |
June | 38°F | 80°F | 60°F | 1.4" |
July | 43°F | 85°F | 65°F | 2.1" |
August | 40°F | 83°F | 63°F | 2.0" |
September | 35°F | 77°F | 56°F | 2.2" |
October | 28°F | 67°F | 46°F | 4.3" |
November | 19°F | 55°F | 35°F | 2.6" |
December | 15°F | 47°F | 29°F | 5.7" |
Index | Arnold | California | National |
Air quality index | 39 | 55 | 42 |
Pollution index | 1,641,280 | 10,473,190 | 2,726,193 |
Measurement | Total |
Days measured | 365 |
Days with good air quality | 331 |
Days with moderate air quality | 33 |
Days w/ poor A.Q. for sensitive groups | 1 |
Days with unhealthy air quality |
Pollutant | Total |
Arsenic | 0.090% |
Benzene | 0.030% |
Carbon Tetrachloride | 0.000% |
Lead | 0.020% |
Mercury | 0.010% |
City | Population | Air Quality Index | National Avg. |
Red Corral, CA | 1,557 | 39 | 22.0% |
Sierra Village, CA | 226 | 39 | 22.0% |
Dorrington, CA | 407 | 39 | 22.0% |
Twain Harte, CA | 2,502 | 39 | 22.0% |
Buckhorn, CA | 2,175 | 39 | 22.0% |
Arnold, CA | 2,099 | 39 | 22.0% |
City | Population | Air Quality Index | National Avg. |
Gurdon, AR | 2,099 | 32 | 36.0% |
Oakland, MD | 2,099 | 36 | 28.0% |
Hoyt Lakes, MN | 2,099 | 35 | 30.0% |
Choctaw Lake, OH | 2,099 | 45 | 10.0% |
Winnsboro Mills, SC | 2,099 | 43 | 14.0% |
Arnold, CA | 2,099 | 39 | 22.0% |