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
504
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Užliedžiai

Lithuania

12.8
12.7
21.6
--
--
--
--
--
--
505
flag

Zrenjanin

Serbia

12.8
14.1
14.8
32.5
--
--
--
--
--
506
flag

Bardejov

Slovakia

12.8
13.1
13.5
14.8
15.6
--
--
--
--
507
flag

Alcalá de Guadaíra

Spain

12.8
14.9
--
--
--
--
--
--
--
508
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Traun

Austria

12.7
11.3
11.5
12
12
11.9
12.9
14.9
14.6
509
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Mladá Boleslav

Czech Republic

12.7
12.4
11.6
13.1
13.4
13
15.6
19.1
15.9
510
flag

Olsztyn

Poland

12.7
14.1
11.3
11
13.4
14.1
15.5
20.3
17.9
511
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Krasnoyarsk

Russia

12.7
11.5
26
51.7
49.8
14.7
17.7
23.1
16.4
512
flag

Bailen

Spain

12.7
13.9
--
--
--
--
--
--
--
513
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Giresun

Turkey

12.7
11.7
12.5
14.3
23.7
21.3
21.9
14
--
514
flag

Kirikkale

Turkey

12.7
10.9
11.7
15
19.6
15.3
17.5
--
--
515
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Dundrum

United Kingdom

12.7
8.3
8.3
9.2
--
--
--
--
--
516
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Enns

Austria

12.6
11.5
13.6
11.9
10.2
8.9
11.6
16.8
13.8
517
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Zlín

Czech Republic

12.6
13.8
12.7
15.7
14.7
13
16.5
21.7
21.3
518
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Acharnes

Greece

12.6
13.1
18.9
21.6
19.5
--
--
--
--
519
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Pederobba

Italy

12.6
10.9
--
--
--
--
--
--
--
520
flag

Nistelrode

Netherlands

12.6
9.6
--
--
--
--
--
--
--
521
flag

Capelle aan den IJssel

Netherlands

12.6
11.6
11.6
12.7
13.4
11.3
--
--
--
522
flag

Lumina

Romania

12.6
11.1
--
--
--
--
--
--
--
523
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Borriana

Spain

12.6
8
7.3
5.3
5.1
4.8
5.1
5.4
6.7
524
flag

Rožďalovice

Czech Republic

12.5
12.2
11.6
12.7
13.4
13.6
13
19.2
18.6
525
flag

Usti nad Labem

Czech Republic

12.5
11.7
11.3
13.8
12.9
12
14.1
18.3
17
526
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Juvignac

France

12.5
13.4
9.7
--
--
--
--
--
--
527
flag

Lohmen

Germany

12.5
12
12.6
--
--
--
--
--
--
528
flag

Lousa

Portugal

12.5
16.4
--
--
--
--
--
--
--
529
flag

Hitzkirch

Switzerland

12.5
--
--
--
--
--
--
--
--
530
flag

Stadt Winterthur (Kreis 1) / Altstadt

Switzerland

12.5
18.1
--
--
--
--
--
--
--
531
flag

Mali Dmytrovychi

Ukraine

12.5
13.1
16.5
--
--
--
--
--
--
532
flag

Kirchstetten

Austria

12.4
11.6
12.9
--
--
--
--
--
--
533
flag

Lenzing

Austria

12.4
10.5
10.6
9.2
9.1
9.7
--
--
--
534
flag

Blagoevgrad

Bulgaria

12.4
11.8
14.9
17.4
11.2
--
--
--
--
535
flag

Paralimni

Cyprus

12.4
12.7
14.8
17.3
15.9
14.3
15.9
18.4
--
536
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Strakonice

Czech Republic

12.4
16.2
--
--
--
--
--
--
--
537
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Neu-Ulm

Germany

12.4
9.4
9.2
10.5
10.1
10
10.6
13.2
12.5
538
flag

Speyer

Germany

12.4
9.6
9.3
11.7
11.2
10.6
11.5
13.2
13.2
539
flag

Petroupolis

Greece

12.4
11.6
12.5
--
--
--
--
--
--
540
flag

Piraeus

Greece

12.4
10.7
16.4
2.2
15.5
16
18.2
--
--
541
flag

Bassano del Grappa

Italy

12.4
11.5
--
--
--
--
--
--
--
542
flag

Verona

Italy

12.4
13.9
17.2
--
--
--
--
--
--
543
flag

Kadoelen

Netherlands

12.4
19.6
--
--
--
--
--
--
--
544
flag

Marianka

Slovakia

12.4
13.3
--
--
--
--
--
--
--
545
flag

Nova Gorica

Slovenia

12.4
14.1
14.6
15.9
--
--
--
--
--
546
flag

Natahoyo

Spain

12.4
10.4
12.3
13.7
10.2
9.5
9.8
--
--
547
flag

Gazipasa

Turkey

12.4
12.3
12.9
--
--
--
--
--
--
548
flag

Protsiv

Ukraine

12.4
13.4
13.7
--
--
--
--
--
--
549
flag

Deinze

Belgium

12.3
10.3
14.9
17.4
18.7
--
--
--
--
550
flag

Brno

Czech Republic

12.3
12.8
11.6
13.9
15.4
13.5
15.7
20.4
18.8
551
flag

Rostěnice-Zvonovice

Czech Republic

12.3
12.8
15.5
--
--
--
--
--
--
552
flag

Panorama

Greece

12.3
9.1
9.6
--
--
--
--
--
--
553
flag

Kozani

Greece

12.3
12.8
15.7
14.5
16.5
--
--
--
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