Mexico: High air pollution levels in capital region May 16

Event

Due to high levels of air pollution, authorities have implemented a “phase 1 contingency plan” for Mexico City and the surrounding Valle de México (valley) for Tuesday, May 16. This pollution could cause eye, nose, and throat irritation and aggravate cardiovascular and respiratory conditions (such as asthma). The government has advised vulnerable individuals to remain indoors as much as possible - particularly between 13:00 and 19:00 (local time) when pollution levels tend to peak - and to abstain from all outdoor exercise. Such individuals include children, pregnant women, and people with chronic illnesses.

Intensified driving restrictions (in addition to rotating driving restrictions permanently in place) are possible in the coming days should the situation worsen.

Context

The current peak in ozone contamination is a result of a high-pressure front in a combination with high vehicle use, high temperatures, higher-than-normal solar radiation, and a lack of rain. The capital region regularly suffers from high levels of air pollution, particularly in warmer periods.

Advice

Individuals present in the Mexico City region are advised to limit outdoor activities until the situation normalizes.