The 25 Worst Cities for People With Spring Allergies

15. Memphis, Tennessee
> Score: 78.4 (Avg: 65.50)
> Rank in spring of 2019: 4th worst city
> PM2.5 pollution 24-hr average: 114 µg/m3 (EPA’s standard is 35 µg/m3)
> Population: 1,345,991

14. Las Vegas, Nevada
> Score: 80.2 (Avg: 65.50)
> Rank in spring of 2019: 34th worst city
> PM2.5 pollution 24-hr average: 29 µg/m3 (EPA’s standard is 35 µg/m3)
> Population: 2,141,574

13. Dayton, Ohio
> Score: 81.2 (Avg: 65.50)
> Rank in spring of 2019: 13th worst city
> PM2.5 pollution 24-hr average: 93 µg/m3 (EPA’s standard is 35 µg/m3)
> Population: 802,645

12. Riverside, California
> Score: 82.0 (Avg: 65.50)
> Rank in spring of 2019: 52th worst city
> PM2.5 pollution 24-hr average: 43 µg/m3 (EPA’s standard is 35 µg/m3)
> Population: 4,518,699

11. Virginia Beach, Virginia
> Score: 82.3 (Avg: 65.50)
> Rank in spring of 2019: 50th worst city
> PM2.5 pollution 24-hr average: 58 µg/m3 (EPA’s standard is 35 µg/m3)
> Population: 1,722,001