Highest risk cities in California
Highest air quality risk cities in California
Ranked city list for poor air quality and smoke stress. Open any city to view local risk details and live outlook context.
State average
AQI score
30/100
Updated Fri, May 8, 6:20 PM.
More state ranking pages
Highest overall weather risk citiesHighest flood risk citiesHighest wind risk citiesHighest lightning risk citiesHighest tornado risk citiesHighest hail risk citiesRanked cities
Top 25 cities by aqi score.
#1
Bakersfield, CA
7 points above the state average
#2
Eastvale, CA
7 points above the state average
#3
Chino, CA
6 points above the state average
#4
Corona, CA
6 points above the state average
#5
Ontario, CA
5 points above the state average
#6
Colton, CA
4 points above the state average
#7
Fontana, CA
4 points above the state average
#8
Jurupa Valley, CA
4 points above the state average
#9
Rancho Cucamonga, CA
4 points above the state average
#10
Riverside, CA
4 points above the state average
#11
Upland, CA
4 points above the state average
#12
Delano, CA
3 points above the state average
#13
Los Angeles, CA
3 points above the state average
#14
Moreno Valley, CA
3 points above the state average
#15
Porterville, CA
3 points above the state average
#16
Pittsburg, CA
2 points above the state average
#17
Alhambra, CA
1 points above the state average
#18
Antioch, CA
1 points above the state average
#19
Brentwood, CA
1 points above the state average
#20
East Los Angeles, CA
1 points above the state average
#21
El Monte, CA
1 points above the state average
#22
Montebello, CA
1 points above the state average
#23
Monterey Park, CA
1 points above the state average
#24
Norwalk, CA
1 points above the state average
#25
Pico Rivera, CA
1 points above the state average
How this ranking works
Rankings use HomeRiskIQ weather risk data and statewide score snapshots.
Scores are normalized to a 0-100 scale and shown against the state average for context.
City entries link to hazard-specific pages where available, otherwise to the city overview.