The Environmental Commission of the Megalopolis (CAMe) has suspended this Friday afternoon the environmental contingency decreed last Wednesday and after 48 hours of alert for air pollution in the metropolitan area. The CAMe has reported that it is withdrawing the measure, starting at 6:00 p.m., because the hourly ozone concentrations were lower than those established by the program to end the contingency: “The Mexico City Atmospheric Monitoring System reports “That in the last hours the high pressure system lost intensity, allowing an increase in wind speed, as well as the presence of humidity and cloud formation in the Valley of Mexico.” All air quality monitoring stations operate within the standard, according to the report.
The commission attributes the high levels of ozone at the surface to the high pressure system that has caused high temperatures and the absence of wind. This has been the tenth contingency of the year, two shy of the 1993 record. CAMe has specified that it will be attentive to the evolution of air quality and meteorological conditions.
The reason why air pollution has been maintained for 48 hours is the same reason that has caused 10 environmental contingencies so far this year and the one that a week ago caused the longest Phase I alert in the last five years. The climatic situation. “Throughout this day, the high pressure system maintains its influence over the Valley of Mexico, causing poor ventilation and atmospheric stability. These conditions, together with intense solar radiation and temperatures close to 30°C, favored the formation of ozone. ”, explained CAMe.
The main problem that experts consider, however, is the great pollutant of the Valley of Mexico: the vehicles that circulate on the streets. Restrictions on car traffic seem to be insufficient to stop the poor air quality, which is spurred by the atmospheric stability that occurs in Mexico between February and June. One more month with these weather conditions that could cause the metropolitan area to exceed the twelve contingencies that were decreed in 1993.
The poor air quality forces the CAMe to issue recommendations to avoid exposure of the population. The entity recommends that, whenever required, avoid outdoor activities between 1:00 p.m. and 7:00 p.m., fill with gasoline before 10 in the morning and after six in the afternoon, do not smoke and try not to use aerosols. , paints or solvents. It invites companies to facilitate teleworking to reduce travel.
The poor air quality in the Valley of Mexico is worrying. This 2024, the capital and the 18 suburban municipalities of the State of Mexico have only had good air quality one out of every seven days of the week. A silent monster, pollution, which prematurely kills between 8,000 and 14,000 people each year, according to the World Health Organization (WHO).
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