2017-2025

World's most polluted cities

The most polluted cities according to data aggregated from over 80,000 data points.

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2025

World Air Quality Report

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2025

World Air Quality Report

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PM2.5 legend
0-5Meets WHO guideline
5.1-10Exceeds by 1 to 2 times
10.1-15Exceeds by 2 to 3 times
15.1-25Exceeds by 3 to 5 times
25.1-35Exceeds by 5 to 7 times
35.1-50Exceeds by 7 to 10 times
>50.1Exceeds by over 10 times
RankCity202520242023202220212020201920182017
4019
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Alturas

USA

8.9
8.9
9.3
9
16.8
--
--
--
--
4020
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River Pines

USA

8.9
8.7
9.7
8.3
--
--
--
--
--
4021
flag

Yreka

USA

8.9
8
12.8
11.2
16.9
12.2
7.8
--
--
4022
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Lawrenceville

USA

8.9
10.1
11.8
8.5
9.9
8.4
--
--
--
4023
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Evanston

USA

8.9
8.2
11.4
9.8
11.6
--
--
--
--
4024
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Libertyville

USA

8.9
7.8
12.7
--
--
--
--
--
--
4025
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Melody Hill

USA

8.9
--
--
--
--
--
--
--
--
4026
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Noblesville

USA

8.9
8.5
9.1
--
--
--
--
--
--
4027
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Ogden Dunes

USA

8.9
7.1
10.3
8.6
--
--
--
--
--
4028
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Kansas City

USA

8.9
8.6
11.8
10.6
13.1
10.8
9.4
10.1
9.5
4029
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Millington

USA

8.9
6.6
10.3
--
--
--
--
--
--
4030
flag

Whitehall

USA

8.9
7
9.8
--
--
--
--
--
--
4031
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Crystal

USA

8.9
8.7
10.9
--
--
--
--
--
--
4032
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Morris

USA

8.9
8.6
--
--
--
--
--
--
--
4033
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St. Paul

USA

8.9
--
--
--
--
--
--
--
--
4034
flag

Kansas City

USA

8.9
8
11.2
10
8.4
7.2
7.9
8
9.1
4035
flag

Darby

USA

8.9
23.2
9
33.8
--
--
--
--
--
4036
flag

Lexington

USA

8.9
7.6
--
--
--
--
--
--
--
4037
flag

Niagara Falls

USA

8.9
--
--
--
--
--
--
--
--
4038
flag

White Shield

USA

8.9
7.9
--
--
--
--
--
--
--
4039
flag

Canton

USA

8.9
8.3
12.1
10.7
12
10
11.3
10.3
9.8
4040
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Stilwell

USA

8.9
9
9.6
7.4
6.8
6.3
6.6
7.5
8.1
4041
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Merion Station

USA

8.9
--
--
--
--
--
--
--
--
4042
flag

Milton

USA

8.9
7.8
12.1
--
--
--
--
--
--
4043
flag

Lake Wylie

USA

8.9
--
--
--
--
--
--
--
--
4044
flag

Edgecliff Village

USA

8.9
9.3
9
--
--
--
--
--
--
4045
flag

Orange

USA

8.9
8.7
9
8.2
7.9
9.1
8.4
10.5
8.7
4046
flag

Deerfield

USA

8.9
8.2
12.9
--
--
--
--
--
--
4047
flag

Delafield

USA

8.9
7.4
14.9
11.8
13.4
--
--
--
--
4048
flag

Milwaukee

USA

8.9
7
11.8
7.8
9.5
8.1
8.5
8.1
7.2
4049
flag

South Launceston

Australia

8.8
4.2
--
--
--
--
--
--
--
4050
flag

Enzersdorf an der Fischa

Austria

8.8
10
11.4
--
--
--
--
--
--
4051
flag

Innsbruck

Austria

8.8
8.5
8.8
10.1
11.1
11.2
11.3
--
--
4052
flag

Dovlici

Bosnia Herzegovina

8.8
11
--
--
--
--
--
--
--
4053
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Jaguariuna

Brazil

8.8
14.7
--
--
--
--
--
--
--
4054
flag

Hamilton

Canada

8.8
7.8
10.6
8.3
11
9.4
10.1
8.9
8.3
4055
flag

Saint-Joseph-de-Sorel

Canada

8.8
5.1
7.9
--
--
--
--
--
--
4056
flag

San Sebastián de La Gomera

Canary Islands

8.8
--
--
--
--
--
--
--
--
4057
flag

Cucunuba

Colombia

8.8
12.8
8
--
--
--
--
--
--
4058
flag

Žďár nad Sázavou

Czech Republic

8.8
9.3
8.6
6.7
10.1
--
12
15.4
12.5
4059
flag

Massilly

France

8.8
7.1
6.8
--
--
--
--
--
--
4060
flag

Metz

France

8.8
8.2
8.2
10.9
9.6
9.1
10.5
12.5
10.4
4061
flag

Le Lamentin

France

8.8
9.4
8.8
8.2
9.7
9.8
--
--
--
4062
flag

Le Mans

France

8.8
7.3
8.5
7.9
9.7
8.5
9.2
9.5
10.7
4063
flag

Toulon

France

8.8
7.7
8.3
9.3
8.5
9.1
11.8
11.9
12.4
4064
flag

Oranienburg

Germany

8.8
--
--
--
--
--
--
--
--
4065
flag

Bebra

Germany

8.8
8.5
7.1
9.4
9.8
--
--
--
--
4066
flag

Gustrow

Germany

8.8
8.8
8.2
9.3
10.4
8.9
10.2
11.6
12
4067
flag

Datteln

Germany

8.8
10.4
11
12.3
10.6
8.6
10.8
14.4
14.4
4068
flag

Essen

Germany

8.8
8.7
9.5
11.2
10.8
9.6
11.7
13.9
13.1
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