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Air Quality

Tracking the impacts to air quality from wildfire smoke to air pollution, and what we can do about it.

The latest in Air Quality

Why Canada’s wildfires will affect air quality for weeks to comeWhy Canada’s wildfires will affect air quality for weeks to come
Climate

Canada’s fire season is especially bad, and it could lead to smoke drifting southward for the rest of the summer.

By Li Zhou
The Air Quality Index and how to use it, explainedThe Air Quality Index and how to use it, explained
Climate

8 things you should know about the number that measures bad air.

By Rebecca Leber
Scientists fear the Western wildfires could lead to long-term lung damageScientists fear the Western wildfires could lead to long-term lung damage
Explainers

Young children, older adults, and people with preexisting conditions face the highest risks.

By Umair Irfan
The orange skies and smoky air from Western wildfires, explained
Explainers

Air pollution may be the most dangerous element of the massive fires.

By Umair Irfan
Air pollution is much worse than we thought
Climate

Ditching fossil fuels would pay for itself through clean air alone.

By David Roberts
Gas stoves can generate unsafe levels of indoor air pollutionGas stoves can generate unsafe levels of indoor air pollution
Climate

An accumulating body of research suggests gas stoves are a health risk.

By David Roberts
The deadly mix of Covid-19, air pollution, and inequality, explainedThe deadly mix of Covid-19, air pollution, and inequality, explained
Explainers

Covid-19 is disproportionately affecting black and brown communities in New York and elsewhere. Air pollution seems to be one reason why.

By Lois Parshley
Study: Small increases in air pollution make coronavirus much more deadlyStudy: Small increases in air pollution make coronavirus much more deadly
Politics

Preliminary data suggests fine particulates can explain variances in Covid-19 death rates and racial disparities.

By Matthew Yglesias
Installing air filters in classrooms has surprisingly large educational benefitsInstalling air filters in classrooms has surprisingly large educational benefits
Future Perfect

$1,000 can raise a class’s test scores by as much as cutting class size by a third.

By Matthew Yglesias
What makes Delhi’s air so deadlyWhat makes Delhi’s air so deadly
Video

The policy behind the pollution.

By Christina Thornell and Mac Schneider
The law that’s helping fuel Delhi’s deadly air pollutionThe law that’s helping fuel Delhi’s deadly air pollution
Science

A policy to conserve water led to the rise of a major source of air pollution, making breathing Delhi’s air as bad as smoking 50 cigarettes.

By Umair Irfan
Air pollution is much more harmful than you knowAir pollution is much more harmful than you know
Future Perfect

The Trump administration is making a bad problem worse.

By Matthew Yglesias
Wildfires are making California’s deadly air pollution even worseWildfires are making California’s deadly air pollution even worse
Climate

Poor air quality can harm millions and take years off lifespans. Dust and wildfire smoke are major contributors.

By Umair Irfan
Study: US air pollution deaths increased by 9,700 a year from 2016 to 2018Study: US air pollution deaths increased by 9,700 a year from 2016 to 2018
Future Perfect

The increase might be due to overly lax policies from both Trump and Obama.

By Dylan Matthews
Breathing dirty air takes years off people’s lives. This tool shows just how much.Breathing dirty air takes years off people’s lives. This tool shows just how much.
Climate

How improving air quality could add years to people’s lives around the world.

By Umair Irfan
We’ll soon know the exact air pollution from every power plant in the world. That’s huge.We’ll soon know the exact air pollution from every power plant in the world. That’s huge.
Climate

Satellite data plus artificial intelligence equals no place to hide.

By David Roberts
Trump EPA appointees want more air pollution — that’s a very bad ideaTrump EPA appointees want more air pollution — that’s a very bad idea
Politics

Fine particulates are, if anything, massively under-regulated.

By Matthew Yglesias
As air pollution gets worse, a dystopian accessory is born
Money

The air is getting more dangerous to breathe all over the world — and a suite of companies are hoping to capitalize with a new fashion item.

By Rose Eveleth
Northern California still has dangerous air quality due to wildfire smokeNorthern California still has dangerous air quality due to wildfire smoke
Climate

An enormous area of California has smoke-polluted air.

By Brian Resnick
Breathing Seattle’s air right now is like smoking 7 cigarettes. Blame wildfires.Breathing Seattle’s air right now is like smoking 7 cigarettes. Blame wildfires.
Climate

Major wildfires are delivering choking haze to much of the western United States.

By Umair Irfan
The Trump administration is lifting key controls on toxic air pollutionThe Trump administration is lifting key controls on toxic air pollution
Climate

The EPA says its reading of the Clean Air Act means polluters can be held to lower standards.

By Umair Irfan
How Delhi became the most polluted city on EarthHow Delhi became the most polluted city on Earth
Climate

Breathing in the Indian capital this month was like smoking 50 cigarettes a day.

By Umair Irfan
Map: see where wildfires are causing record pollution in CaliforniaMap: see where wildfires are causing record pollution in California
Climate

Particulates from smoke have drastically impacted air quality in areas of several states.

By Umair Irfan and Casey Miller
These countries have the deadliest air pollution. (Surprisingly, Georgia is No. 1.)These countries have the deadliest air pollution. (Surprisingly, Georgia is No. 1.)
Climate

And the US has much cleaner air than Western Europe.

By Brad Plumer
Mexico City's adopting a popular method to fight air pollution. It probably won't work.Mexico City's adopting a popular method to fight air pollution. It probably won't work.
World Politics

Starting Tuesday, all cars in Mexico City will be banned from driving one day a week.

By Tara Golshan
Meet the scientist connecting the dots between air pollution and dementiaMeet the scientist connecting the dots between air pollution and dementia
Climate

Increasingly, research suggests a link between dirty air and diseases like Alzheimer’s and Parkinson’s.

By Clayton Aldern
India's air pollution is so bad it's reducing life expectancy by 3.2 yearsIndia's air pollution is so bad it's reducing life expectancy by 3.2 years
Science

A new study finds that excess air pollution in India is shortening the lives of 660 million people by 3.2 years on average.

By Brad Plumer
Indoor air pollution is now the world's deadliest environmental problemIndoor air pollution is now the world's deadliest environmental problem
Climate

It now kills 4 million people each year — more than malaria and AIDS combined.

By Brad Plumer
India has the world's worst air pollutionIndia has the world's worst air pollution
Air Quality

If you live in a large Indian city, your lungs are taking in dangerous levels of air pollution on a daily basis.

By Joseph Stromberg
47% of Americans live with unsafe air pollution47% of Americans live with unsafe air pollution
Air Quality

The US has made a ton of progress in the last few decades — but air pollution is still with us.

By Brad Plumer
Air pollution now kills 7 million people per yearAir pollution now kills 7 million people per year
Air Quality

The World Health Organization finds that indoor and outdoor air pollution are now one of the leading causes of death worldwide.

By Brad Plumer