Air quality

New York City’s air contains particles, drops of liquid, gasses, and other pollution that can affect health. Bad air quality can be particularly dangerous for older adults, children, and people with heart or lung conditions.

Air quality varies from neighborhood to neighborhood, based on local levels of emissions and many other factors. We monitor air quality using the New York City Community Air Survey (NYCCAS), NYC’s comprehensive air quality monitoring and modeling network. NYCCAS allows us to understand neighborhood differences in air quality - and what contributes to those differences.

Related Data Stories

Efforts to reduce air pollution should focus on neighborhoods with the worst health impacts.

Every year in NYC between 2015 and 2017 (the most recent years for which this analysis is available), fine particulate matter pollution from motor …

Read more...

ZAPPA: A tool to understand air quality policies

How do we know what air quality policies will have the biggest effect? New York City’s air quality is generally good and has been improving over …

Read more...

An update on air quality during COVID-19

Big improvements in outdoor air quality during COVID-19 reveal impacts of traffic and commercial cooking On March 20, 2020, New York State announced …

Read more...

Tracking changes in New York City's sources of air pollution

As city life changes, so does its air quality, as sources of emissions that affect the city’s outdoor air quality, like truck traffic, building …

Read more...

Air quality during COVID-19

What happens when NYC stays home? The COVID-19 pandemic upended the lives of all New Yorkers. The outbreak has affected many aspects of our daily …

Read more...

Air quality snapshots: special findings from 10 years of NYCCAS

Skip Nav Air quality snapshots: 10 years of NYC air quality monitoring A traffic health threat: air toxics Noise levels that harm health The benefits …

Read more...

Air quality in car-free areas

Does the air improve in car-free zones? People often ask us this, and it’s a great question. To answer, we turn to the NYC Community Air Survey, or …

Read more...

What our air quality monitors tell us about NYC's neighborhoods

In Part 1, we looked at data from the New York City Community Air Survey (NYCCAS) - a network of about 100 air quality monitors - to see if air …

Read more...

Breathe easy: NYC's air quality is improving

The air we breathe can have a major effect on our health — air pollution can make asthma worse and can cause heart disease, lung disease, strokes, and …

Read more...