2017-2023

World's most polluted cities

Most polluted city ranking based on annual average PM2.5 concentration (μg/m³)

2023

World Air Quality Report

NEWSROOM
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Chicago, USA x
London, United Kingdom x
Los Angeles, USA x
Moscow, Russia x
New York City, USA x
Paris, France x
PM2.5 legend

0-5

Meets WHO guideline

5.1-10

Exceeds by 1 to 2 times

10.1-15

Exceeds by 2 to 3 times

15.1-25

Exceeds by 3 to 5 times

25.1-35

Exceeds by 5 to 7 times

35.1-50

Exceeds by 7 to 10 times

>50.1

Exceeds by over 10 times

Rank
City
2023 Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec 2022 2021 2020 2019 2018 2017
2120 USA
Chicago, USA
13 14.6 9.4 10.1 9 9.8 28.4 17.4 16.8 12.6 7.9 9.9 9.8 11.8 13.4 11.1 12.8 9.4 6.7
2627 USA
New York City, USA
11.6 10.7 11.8 8 9.4 8 24.8 17.4 12.3 10.9 8.3 7.9 10.3 9.9 10 6.5 7 -- --
3256 Russia
Moscow, Russia
10.4 12 13.1 9 14.9 8.4 8.5 8.8 11.1 12.7 6.3 9.9 9.9 10.8 11.9 10.5 10 10.1 8.4
3299 France
Paris, France
10.3 11.3 17.8 10.4 10.4 11 12.9 7.2 6.7 9.5 9.8 7.5 9.8 12.7 13.7 12.2 14.7 15.6 15.4
3890 USA
Los Angeles, USA
9.5 5.7 6 5.9 12 10.1 9.3 13.5 11.2 13.8 8.7 7.4 9.9 10.5 13.7 14.6 12.7 14.4 16.1
4830 United Kingdom
London, United Kingdom
8.4 10.1 12 7.1 10.2 8.5 9.5 5.4 5.5 10.8 7.6 7.5 6.7 9.6 9.8 9.6 11.4 12 12.7

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