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US AQI
PM2.5
#MAJOR CITYUS AQI
1
Dhaka, Bangladesh
155
2
Beijing, China
155
3
Kathmandu, Nepal
153
4
Shenyang, China
153
5
Chiang Mai, Thailand
153
6
Kolkata, India
151
7
Hanoi, Vietnam
146
8
Santiago, Chile
143
9
Sarajevo, Bosnia Herzegovina
133
10
Milano, Italy
124
Most polluted cities
Most polluted countries
News
2020 World Air Quality Report reveals substantial air quality changes
See what 2020 air quality data says about the role human behavior plays in air pollution.
IQAir and Greenpeace report 2020 air pollution deaths
A partnership between IQAir and Greenpeace estimated deaths from PM2.5 in 2020. See the results.
Do air purifiers help protect against viruses like COVID-19?
Viruses like COVID-19 pose a threat to daily life. Find out how some air purifiers can help protect you against airborne viruses.
Dangerous air pollution from Mt. Etna and Kilauea
Learn how volcano smoke can impact air quality for thousands of miles – and how you can protect yourself.
Hazardous air quality descends on Kabul and Central Asia
Find out why Kabul, Afghanistan and cities across Central Asia are blanketed in winter smog.
more air quality news
Air quality for home
Learn more about IQAir’s full line of personal, room, and whole-house air purification systems.
Air quality on-the-go
Check out IQAir’s portable, travel, and wearable air purification products.
Air quality for offices
See IQAir’s wide range of air purification technology for offices and shared workspaces.
Air quality for schools
Learn how IQAir technology helps schools achieve the cleanest air.
Air quality for hospitals and clinics
IQAir offers solutions for the most critical environments.
Air quality for dental practices
Learn more about high-performance air cleaning for dental practices.
Air quality for doctor’s office
Learn how better air can profoundly impact patients and staff.
Air quality for labs
Learn more about effective cleanroom and laboratory contaminant control.
Air quality for hospitality
Make your customers and guests feel right at home with clean, healthy air.
Air quality for museums
Protect precious museum collections from corrosive indoor air pollutants.
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