NewzThe 2025 World Air Quality Report by IQAir identifies Mexico as having the highest concentration of air pollution in Latin America. According to the data, five of the ten cities with the highest levels of fine particulate matter (PM2.5) in the region are located within Mexican territory.
Saltillo currently leads the regional ranking with a concentration of 32.3 μg/m³ of PM2.5. This figure surpasses the pollution levels recorded in Beijing, which stands at 26.8 μg/m³.
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