10 Cities Where It’s Hardest to Breathe

Phoenix, Arizona

 AQI Rank: 6 Smoking Rank: 119 Asthma Rank: 51 COPD Rank: 113 Driving Rank: 167 Density Rank: 10 Elevation Rank: 54

Glendale, California

  AQI Rank: 6 Smoking Rank: 101 Asthma Rank: 41 COPD Rank: 97 Driving Rank: 167 Density Rank: 101 Elevation Rank: 42

San Bernardino, California

AQI Rank: 53 Smoking Rank: 97 Asthma Rank: 94 COPD Rank: 56 Driving Rank: 1 Density Rank: 126 Elevation Rank: 48

Fontana, California

AQI Rank: 32 Smoking Rank: 197 Asthma Rank: 192 COPD Rank: 177 Driving Rank: 1 Density Rank: 69 Elevation Rank: 37

Rochester, Minnesota

AQI Rank: 21 Smoking Rank: 24 Asthma Rank: 242 COPD Rank: 242 Driving Rank: 120 Density Rank: 52 Elevation Rank: 55

Riverside, California

AQI Rank: 16 Smoking Rank: 181 Asthma Rank: 173 COPD Rank: 158 Driving Rank: 1 Density Rank: 111 Elevation Rank: 75

Pasadena, California

AQI Rank: 16 Smoking Rank: 108 Asthma Rank: 205 COPD Rank: 113 Driving Rank: 57 Density Rank: 130 Elevation Rank: 65

Pomona, California

AQI Rank: 53 Smoking Rank: 193 Asthma Rank: 164 COPD Rank: 171 Driving Rank: 1 Density Rank: 43 Elevation Rank: 79

Ontario, California

AQI Rank: 32 Smoking Rank: 195 Asthma Rank: 192 COPD Rank: 165 Driving Rank: 1 Density Rank: 129 Elevation Rank: 59

Kansas City, Kansa

AQI Rank: 9 Smoking Rank: 14 Asthma Rank: 62 COPD Rank: 56 Driving Rank: 158 Density Rank: 225 Elevation Rank: 66