Live index with partial source coverage. Prior values were preserved where live retrieval was unavailable: AirNow.

State profile

California

4 indexed cities · average score 49.0

State rank	City	Score	AQI	Water	Moisture	Housing year
#1	San Francisco	51.6	32	0.0%	10.5	1946
#2	San Diego	48.4	67	0.0%	23.5	1979
#3	Sacramento	48.1	57	0.0%	32.3	1977
#4	Los Angeles	47.9	52	0.0%	26.7	1965