Quantcast

Mexico City Declares Environmental Emergency as Wildfire Smoke Chokes the Air

Climate
Air pollution from wildfire smoke in Mexico City Tuesday. PEDRO PARDO / AFP / Getty Images

Authorities in Mexico City declared an environmental emergency Tuesday as smoke from wildfires caused air pollution to reach levels well above what the World Health Organization (WHO) considers safe.


The Nezahualcoyotl measuring station recorded particulate matter (PM2.5) levels of 158 micrograms per cubic meter of air at 5 a.m. Tuesday morning, Reuters reported. That's more than six times the WHO recommended level of below 25. While the emergency was declared Tuesday, the air had been thick with smoke since Saturday, NBC News reported.

"You can't escape it," a tour bus operator told Bloomberg News.

Government agency the Megalópolis Environmental Commission (CAME) advised residents to stay inside, place wet towels under their doors and avoid activities that could make air quality worse, like cooking with wood or coal, smoking and lighting candles, NBC News reported.

The local government also said it would restrict vehicle traffic Wednesday, according to Reuters. Mexico City Mayor Claudia Sheinbaum said she was considering closing schools, and a local soccer league, Liga MX, decided to delay its semifinals.

Mexico City's once famously dangerous air quality has improved in recent decades, partly through a policy of restricting traffic on days when pollution reaches elevated levels, Bloomberg reported. But the current pollution comes mostly from wildfires outside the city, not exhaust.

There were 23 fires burning on Sunday, Mexico City's Fire Department said, as NBC News reported. The fires have prompted authorities to declare emergencies in 11 municipalities in the southern state of Oaxaca. Blazes have also been reported in Valle de Bravo, Tepoztlán and Jalisco. The fires around the city have been fueled partly by hot, dry weather. Mexico City temperatures have been above average on 73 days this year.

"The climate works against Mexico City and the area has a baseline of poor air quality from urban sources," Air Quality Program director and NYU Marron Institute of Urban Management associate professor Kevin Cromar told NBC News.

Rising temperatures in Mexico have been linked to climate change, according to the Climate Reality Project:

In fact, by the end of this century, northern Mexico could see its average annual temperatures rise by 3 – 4 degrees Celsius (about 5.4 – 7.2 Fahrenheit). And the rest of the country? It could see temperatures climb by 1.5 – 2.5 degrees Celsius (about 2.7 – 4.5 Fahrenheit).

A few degrees might not seem like a big deal, but think of it this way: What's the difference between 0 and 1 degree Celsius? Well, that's the difference between ice and water. A small change in temperature can really disrupt the systems we depend on to survive.

As Mexico (and our world) becomes warmer, the fingerprints of climate change can be seen everywhere you look. Climate scientists observe impacts like sea-level rise, longer and more intense wildfire seasons, and devastating droughts (just to name a few). And more importantly, everyday people experience the effects.
Air pollution has been associated with a growing list of negative health impacts, from lung and heart disease to dementia. It is responsible for an estimated 4.2 million early deaths each year, according to WHO.

NASA satellite imagery showing smoke from wildfires spreading over Mexico Tuesday

Photo credit: NASA Worldview

EcoWatch Daily Newsletter

A new report spotlights a U.N. estimate that at least 275 million people rely on healthy coral reefs. A sea turtle near the Heron Island in the Great Barrier Reef is seen above. THE OCEAN AGENCY / XL CATLIN SEAVIEW SURVEY

By Jessica Corbett

In a new report about how the world's coral reefs face "the combined threats of climate change, pollution, and overfishing" — endangering the future of marine biodiversity — a London-based nonprofit calls for greater global efforts to end the climate crisis and ensure the survival of these vital underwater ecosystems.

Read More
Half of the extracted resources used were sand, clay, gravel and cement, seen above, for building, along with the other minerals that produce fertilizer. Cavan Images / Cavan / Getty Images

The world is using up more and more resources and global recycling is falling. That's the grim takeaway from a new report by the Circle Economy think tank, which found that the world used up more than 110 billion tons, or 100.6 billion metric tons, of natural resources, as Agence France-Presse (AFP) reported.

Read More
Sponsored

By Gero Rueter

Heating with coal, oil and natural gas accounts for around a quarter of global greenhouse gas emissions. But that's something we can change, says Wolfgang Feist, founder of the Passive House Institute in the western German city of Darmstadt.

Read More
Researchers estimate that 142,000 people died due to drug use in 2016. Markus Spiske / Unsplash

By George Citroner

  • Recent research finds that official government figures may be underestimating drug deaths by half.
  • Researchers estimate that 142,000 people died due to drug use in 2016.
  • Drug use decreases life expectancy after age 15 by 1.4 years for men and by just under 1 year for women, on average.

Government records may be severely underreporting how many Americans die from drug use, according to a new study by researchers from the University of Pennsylvania and Georgetown University.

Read More
Water coolers in front of shut-off water fountains at Center School in Stow, MA on Sept. 4, 2019 after elevated levels of PFAS were found in the water. David L. Ryan / The Boston Globe via Getty Images

In a new nationwide assessment of drinking water systems, the Environmental Working Group found that toxic fluorinated chemicals known as PFAS are far more prevalent than previously thought.

Read More