Authorities in central Mexico have sounded the alarm over deteriorating air quality. The Environmental Commission of the Megalopolis, known by its Spanish acronym CAMe, announced the activation of Phase 1 of its environmental contingency plan after ozone concentrations in the Valley of Mexico climbed above safe thresholds.
The Valley of Mexico, home to Mexico City and surrounding municipalities in the States of Mexico, Hidalgo, and Tlaxcala, is one of the most densely populated and traffic-congested regions in North America, making it especially prone to ozone buildup during periods of intense sunlight and stagnant air—conditions common in the late dry season.
Under a Phase 1 alert, officials typically ask residents, especially children, older adults, and people with respiratory or cardiovascular conditions, to avoid strenuous outdoor exercise and prolonged sun exposure. Vehicle restrictions and limits on industrial emissions are also standard tools used to curb pollution until air quality improves.
CAMe monitors pollution levels across the region in real time and coordinates response measures among local governments to protect public health when ozone or particulate matter reaches hazardous levels.
For full details on the contingency measures and affected areas, read the original report from La Jornada.
Source: CAMe activa la fase 1 de contingencia ambiental por ozono en el Valle de México (jornada.com.mx). English version produced with AI assistance.
Image: kevin dooley, BY 2.0 (via Openverse).