Heat waves increase pollution and health risks

Santo Domingo, (EFE).- Research from the University of Texas shows that heat waves, which are becoming more frequent, intense, and prolonged worldwide, not only pose a risk from high temperatures but also worsen air pollution. Presented at the American Chemical Society conference, the study analyzed the 2024 Texas heat wave, during which temperatures ranged from 32°C to 41°C.

Using air samples collected day and night on the Texas A&M University campus, researchers measured pollutants like nitrogen oxides, ozone, volatile organic compounds (VOCs), and nanoparticles. The study found that extreme heat increased levels of ozone, oxygenated VOCs, and highly acidic nanoparticles. Tree emissions of natural VOCs, such as isoprene, also rose during the heat wave, interacting with other pollutants to create harmful ozone and secondary organic aerosols.

To protect public health, researchers recommend limiting outdoor activity during peak heat hours, avoiding exercise, monitoring air quality, and keeping windows closed. They stress that understanding how climate change impacts atmospheric chemistry and air quality is crucial to mitigating these risks.