Wes Lowe uses so much Claritin that he started an Amazon subscription to avoid running out. His kids take two asthma medications. This reflects the normalcy of pollution in California’s San Joaquin Valley, where residents breathe some of the dirtiest air in the nation.
Lowe lives about 20 miles outside of Fresno, in the valley’s heart. More than a dozen highways, including Interstate 5, run through the region, carrying almost half of the state’s truck traffic. The sky is usually hazy, the air is often deemed hazardous, and 1 in 6 children live with asthma. “You don’t realize how bad it is until you leave,” Lowe said.