Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
January | 45°F | 69°F | 56°F | 7.4" |
February | 47°F | 68°F | 57°F | 5.5" |
March | 50°F | 71°F | 60°F | 2.6" |
April | 52°F | 73°F | 62°F | 1.3" |
May | 57°F | 74°F | 64°F | 2.3" |
June | 60°F | 77°F | 67°F | 0.1" |
July | 64°F | 81°F | 71°F | 0.5" |
August | 64°F | 83°F | 72°F | 0.2" |
September | 62°F | 84°F | 71°F | 5.2" |
October | 57°F | 80°F | 67°F | 1.7" |
November | 50°F | 74°F | 61°F | 2.9" |
December | 44°F | 67°F | 55°F | 7.6" |
Index | Westminster | California | National |
Air quality index | 72 | 55 | 42 |
Pollution index | 858,652 | 10,473,190 | 2,726,193 |
Measurement | Total |
Days measured | 365 |
Days with good air quality | 66 |
Days with moderate air quality | 208 |
Days w/ poor A.Q. for sensitive groups | 62 |
Days with unhealthy air quality | 28 |
Pollutant | Total |
Arsenic | 0.002% |
Benzene | 0.010% |
Carbon Tetrachloride | 0.000% |
Lead | 0.020% |
Mercury | 0.001% |
City | Population | Air Quality Index | National Avg. |
Bell Gardens, CA | 41,770 | 72 | 44.0% |
Fullerton, CA | 141,061 | 72 | 44.0% |
Lakewood, CA | 79,676 | 72 | 44.0% |
Norwalk, CA | 104,524 | 72 | 44.0% |
South Whittier, CA | 58,616 | 72 | 44.0% |
Westminster, CA | 90,857 | 72 | 44.0% |
City | Population | Air Quality Index | National Avg. |
Bellingham, WA | 90,821 | 34 | 32.0% |
Santa Barbara, CA | 90,911 | 44 | 12.0% |
Kirkland, WA | 91,146 | 45 | 10.0% |
San Leandro, CA | 90,489 | 40 | 20.0% |
Carson, CA | 91,354 | 72 | 44.0% |
Westminster, CA | 90,857 | 72 | 44.0% |