Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
January | 42°F | 58°F | 50°F | 3.5" |
February | 46°F | 61°F | 53°F | 3.3" |
March | 46°F | 64°F | 54°F | 2.6" |
April | 48°F | 66°F | 56°F | 1.8" |
May | 52°F | 69°F | 59°F | 0.6" |
June | 56°F | 73°F | 62°F | 0.1" |
July | 57°F | 75°F | 64°F | 0.0" |
August | 58°F | 76°F | 64°F | 0.0" |
September | 57°F | 76°F | 64°F | 0.2" |
October | 53°F | 72°F | 61°F | 1.4" |
November | 48°F | 66°F | 56°F | 1.3" |
December | 42°F | 58°F | 49°F | 3.2" |
Index | Castro Valley | California | National |
Air quality index | 40 | 55 | 50 |
Pollution index | 6,427,290 | 18,106,726 | 5,066,862 |
Measurement | Total |
Days measured | 365 |
Days with good air quality | 290 |
Days with moderate air quality | 74 |
Days w/ poor A.Q. for sensitive groups | 1 |
Days with unhealthy air quality | 0 |
Pollutant | Total |
Arsenic | 0.010% |
Benzene | 0.110% |
Carbon Tetrachloride | 0.010% |
Lead | 0.010% |
Mercury | 0.003% |
City, State | Population | Air Quality Index | National Avg. |
San Lorenzo, CA | 24,790 | 40 | 20% |
Alameda, CA | 77,409 | 40 | 20% |
Oakland, CA | 412,040 | 40 | 20% |
Albany, CA | 19,420 | 40 | 20% |
Kensington, CA | 5,602 | 40 | 20% |
Castro Valley, CA | 62,825 | 40 | 20% |
City, State | Population | Air Quality Index | National Avg. |
Bowling Green, KY | 62,824 | 43 | 14% |
Greenville, SC | 62,776 | 46 | 8% |
Cheyenne, WY | 62,879 | 43 | 14% |
South Jordan, UT | 62,751 | 51 | 2% |
Waltham, MA | 62,699 | 43 | 14% |
Castro Valley, CA | 62,825 | 40 | 20% |