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 roller coaster on the Jersey Shore flooded after Hurricane Sandy. Photo credit: Hurricane_Sandy_New_Jersey_Pier.jpg: Master Sgt. Mark C. Olsen / U.S. Air Force / New Jersey National Guard / CC BY 2.0

New Jersey will be the first state in the U.S. to require builders to take the climate crisis into consideration before seeking permission for a project.

Read More
The Director of the Chinese Center for Disease Control and Prevention, Gao Fu speaks on Jan. 26 during a press briefing on studying the 2019-nCoV coronavirus and developing a vaccine to prevent it. Roman Balandin / TASS / Getty Images

Editor's note: The coronavirus that started in Wuhan has sickened more than 4,000 people and killed at least 100 in China as of Jan. 27, 2020. Thailand and Hong Kong each have reported eight confirmed cases, and five people in the U.S. have been diagnosed with the illness. People are hoping for a vaccine to slow the spread of the disease.

Read More
Sponsored
Healthline ranks Samoas, seen above, as the 11th healthiest Girl Scout Cookie. brian / Flickr / CC BY-ND 2.0

By Nancy Schimelpfening

  • Nutrition experts say healthy eating is about making good choices most of the time.
  • Treats like cookies can be eaten in moderation.
  • Information like total calories, saturated fat, and added sugars can be used to compare which foods are relatively healthier.
  • However, it's also important to savor and enjoy what you're eating so you don't feel deprived.

Yes, we know. Cookies aren't considered a "healthy" food by any stretch of the imagination.

Read More
Actress Jane Fonda is arrested during the "Fire Drill Friday" Climate Change Protest on Oct. 25, 2019 in Washington, DC. John Lamparski / Getty Images

When you see an actor in handcuffs, they're usually filming a movie. But when Jane Fonda, Ted Danson, Sally Field, and other celebrities were arrested in Washington, D.C., last fall, the only cameras rolling were from the news media.

Read More
A solitary Dungeness crab sits in the foreground, at low tide on an overcast day. The crabs' shells are dissolving because of ocean acidification on the West Coast. Claudia_Kuenkel / iStock / Getty Images

As the Pacific Ocean becomes more acidic, Dungeness crabs, which live in coastal areas, are seeing their shells eaten away, according to a new study commissioned by the National Oceanic and Atmospheric Administration (NOAA).

Read More