Breaking stories and in‑depth analysis: up‑to‑the‑minute global news on politics, business, technology, culture, and more—24/7, all in one place.
Mexico City and surrounding areas are continuing to grapple with poor air quality as the Comisión Ambiental de la Megalópolis (CAMe) maintains Phase 1 of the environmental contingency for ozone. The alert, initially triggered earlier this week, remains in effect due to unfavorable meteorological conditions that are trapping pollutants and driving up ozone levels.
The ongoing contingency impacts vehicle circulation restrictions within the Zona Metropolitana del Valle de México (ZMVM). CAMe’s decision comes as a result of persistent atmospheric stability, weak winds, and warm temperatures, all contributing to the buildup of ozone. Air quality is currently considered “very poor” according to the commission.
As of Monday, February 16, 2026, vehicles with a verification hologram 2 are prohibited from circulating. Restrictions also apply to vehicles with a hologram 1, with limitations based on the last digit of the license plate – specifically, those ending in 1, 3, 5, 6, 7, and 9 are affected. Vehicles with a hologram 0 or 00, with a yellow sticker and ending in 5 or 6, are also subject to the restrictions. Older vehicles without a verification hologram, demonstration vehicles, modern cars, those with a tourist pass, or vehicles with out-of-state plates are also included in the circulation ban.
CAMe reported that at 3:00 PM local time on February 16th, the Ajusco Medio monitoring station in the Tlalpan borough registered a peak ozone concentration of 149 parts per billion (ppb). This level triggered the continuation of the contingency measures. The commission anticipates that these conditions will persist in the coming hours, maintaining the poor air quality index.
Factors Contributing to the Air Quality Crisis
The current situation is attributed to an anticyclonic influence over central Mexico and a stable, dry air mass. These conditions result in mostly clear skies, intense solar radiation, and weak, undefined winds, all of which hinder the dispersion of pollutants. Recent reactivation of the contingency highlights the volatility of air quality in the region, with conditions shifting rapidly.
This marks the third ozone contingency this year for the Valley of Mexico, with previous phases activated and then lifted as weather patterns changed. The cyclical nature of these events underscores the challenges in managing air pollution in this densely populated metropolitan area.
Impact on Residents and Transportation
The restrictions are designed to reduce vehicle emissions, a major contributor to ozone formation. Residents are encouraged to utilize public transportation, postpone unnecessary travel, and limit outdoor activities, particularly during peak hours. The contingency measures aim to protect vulnerable populations, including children, the elderly, and individuals with respiratory conditions.
The Phase 1 contingency also serves as a reminder of the ongoing efforts to improve air quality in the Valley of Mexico. CAMe continues to monitor conditions closely and will provide updates as the situation evolves. Residents can stay informed through official CAMe channels and local news outlets.
Looking ahead, the duration of the contingency will depend on changes in meteorological conditions. CAMe will continue to assess ozone levels and adjust restrictions as needed. The commission is closely monitoring the atmospheric conditions and will provide further updates as they become available. The public is encouraged to remain vigilant and follow official recommendations to minimize exposure to air pollution.
Share your thoughts on the air quality situation in the comments below, and please share this article with anyone affected by the restrictions.
