Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
January | 41°F | 59°F | 50°F | 2.8" |
February | 45°F | 62°F | 53°F | 3.1" |
March | 47°F | 65°F | 55°F | 2.9" |
April | 49°F | 67°F | 57°F | 1.8" |
May | 52°F | 69°F | 59°F | 0.4" |
June | 54°F | 72°F | 62°F | 0.3" |
July | 56°F | 73°F | 63°F | 0.0" |
August | 57°F | 73°F | 63°F | 0.0" |
September | 55°F | 76°F | 64°F | 0.1" |
October | 52°F | 73°F | 61°F | 1.0" |
November | 47°F | 65°F | 56°F | 1.9" |
December | 42°F | 59°F | 50°F | 4.1" |
Index | San Leandro | California | National |
Air quality index | 40 | 55 | 42 |
Pollution index | 6,427,290 | 10,473,190 | 2,726,193 |
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 | Population | Air Quality Index | National Avg. |
Lafayette, CA | 25,949 | 40 | 20.0% |
San Miguel CDP (San Luis Obispo County), CA | 2,696 | 40 | 20.0% |
Blackhawk, CA | 10,590 | 40 | 20.0% |
Danville, CA | 44,933 | 40 | 20.0% |
Norris Canyon, CA | 790 | 40 | 20.0% |
San Leandro, CA | 90,489 | 40 | 20.0% |
City | Population | Air Quality Index | National Avg. |
Bellingham, WA | 90,821 | 34 | 32.0% |
Westminster, CA | 90,857 | 72 | 44.0% |
Toms River, NJ | 90,081 | 41 | 18.0% |
Santa Barbara, CA | 90,911 | 44 | 12.0% |
Indio, CA | 89,996 | 89 | 78.0% |
San Leandro, CA | 90,489 | 40 | 20.0% |