CDMX, the second most polluted in the world


You can not breathe in Mexico City, and you can not to the degree that inhabitants of the megaurbe have considered that the day will come when they will have to use anti-pollution masks to go out, because maybe that will be the only option.

For the first time in history, the country's capital, one of the most populated cities in the world, ranks as the second most polluted city on the planet, just shy of Beijing, China. The Aztec city registers in the most recent measurement a score of 866 in the quality index, only surpassed by the Orientals who have 999; in the list follow India, with 449 and South Africa, with 319.

The journalist Enrique Acevedo of Univision Noctura Edition affirmed and verified that throughout the current week, the presence of carbon dioxide (CO2) in the atmosphere reached for the first time in the history of humanity in Mexico the figure exceeded 415 parts per million.

The Air Quality Index (AQI) is based on five indicators of atmospheric pollution, which are ground-level ozone, particulate pollution, carbon monoxide, sulfur dioxide, and carbon dioxide. nitrogen dioxide.

Acevedo warned that what is happening now are the first effects of climate change in urban areas because there is no effective plan to counteract pollution in all areas.

The environmental contingency is so serious that the population was asked not to do any outdoor activity, as it can cause serious health problems; in the case of children and older adults, more care must be taken, since they are the most vulnerable when breathing contaminated air, even the suspension of classes was determined for two days (Thursday and Friday) in most of the school levels. To make matters worse, pollution is not exclusive to CDMX: it has also impacted 11 other states.

Cities with record numbers

Important cities worldwide have also faced environmental contingencies in recent years, such as Beijing, Bogota and France.

The capital of China in 2015 for the first time in its history had two red alerts for its air pollution, before which the authorities decreed that half of the vehicles did not circulate and as a consequence the schedule of public transport had to be extended.

In South America, in Bogot√°, Colombia, the Secretariat of the Environment, the Metropolitan Area and the Early Warning System (SIATA) decreed that only some vehicles and motorcyclists could circulate, due to the high levels of pollutants in the environment.

Paris, France is not off the map, when particles that exceed 50 micrograms are present, the use of vehicles is suspended and last April the figure was reached, according to what was published by the European Environment Agency (EEA, by its acronym in English).

Mexico City's Air Pollution Problem (April 2021)