World's most polluted cities 2020 (PM2.5)

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

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2020

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2020 World air quality report

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PM2.5 Legend
WHO target
Good
Moderate
Unhealthy for sensitive groups
Unhealthy
Very unhealthy
Hazardous
Unit: µg/m³
Rank City 2020 AVG JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC 2019 AVG 2018 AVG 2017 AVG
351 USA
Santa Barbara, USA
10 7 9.1 4.3 6.3 7.5 7.1 9.3 14.1 20.7 18.7 8.9 6.6 8.4 8.7 -
352 USA
Thousand Oaks, USA
10 7.5 8.4 3.7 5.9 7.1 8.7 9.8 14.2 19.2 19.7 8.8 6 8.2 9.4 9.2
353 USA
Apple Valley, USA
9.9 10.5 7.7 4.6 6.1 5.2 7.3 6.2 13.8 19.9 15.2 9.2 10.6 7 - -
354 USA
Banning, USA
9.9 7.6 8 5.2 7 9.8 10.9 10.7 13.3 16.4 14.1 7.7 7.7 9.6 11 12
355 USA
Berkeley, USA
9.9 6.4 8.1 4.4 4 4 5.7 6.6 15.8 29.1 14.6 9.6 11 7.1 - -
356 USA
Corte Madera, USA
9.9 6.3 7.1 4.7 3.8 3.4 3.9 5.8 15.5 30.2 15.1 7.9 11.5 6.1 - -
357 USA
Fillmore, USA
9.9 5.7 6.2 3.6 5.7 6.5 8.2 10.1 15 20.9 19.9 7.4 5.7 7.6 9.9 8.4
358 USA
Hollister, USA
9.9 7.2 7.7 4.7 4.5 4.4 5.1 7.1 21.4 23.3 16.1 7.4 9.4 5.6 7.3 5.6
359 USA
Oak View, USA
9.9 5.6 7.4 4.5 5.7 6.3 7.9 8.3 13.3 18.9 19.3 8.6 8.1 7.9 - -
360 USA
San Carlos, USA
9.9 5.8 7.4 4.3 3 2.8 3.2 5.3 18.1 28.8 15 9.4 10.5 6.2 - -
361 USA
San Mateo, USA
9.9 5.5 6.8 4.3 3.5 3.2 3.2 4.9 23.5 27.1 14.6 9 11.1 6 - -
362 USA
Saratoga, USA
9.9 5.7 7.1 4.4 3.6 3.1 4 6.4 22.4 27.5 15.6 7.2 7.9 5.9 - -
363 USA
Sausalito, USA
9.9 6.3 7.3 5 4.3 4.5 4.7 6.2 12.8 29.5 14.3 7.8 12.5 6.5 - -
364 USA
Victorville, USA
9.9 11.1 8.1 4.5 5.9 6.2 7.7 7 13.4 19.3 14.3 9.8 10.6 7.3 - -
365 USA
Lancaster, USA
9.8 7 6.4 4 5.1 4.5 6 6.1 19.6 25.3 17.1 7.6 8.3 5.7 7.3 8.6
366 USA
Tiburon, USA
9.8 6.4 7.5 4.6 3.8 3.5 4 5.8 14.8 28.7 14.2 8.2 12.6 6.4 - -
367 USA
Trinidad, USA
9.8 8.4 7.9 6.2 6.3 4.9 6.2 6.6 8.9 27 13.8 8.4 10.8 6.7 - -
368 USA
Westmorland, USA
9.8 16.6 11.2 4.7 5.8 9.4 11.1 9.3 9.3 12.4 12.1 7.8 8.2 - - -
369 USA
Wrightwood, USA
9.8 11.4 7.5 6.1 4.2 3.4 4.4 4.1 11.6 18.8 10.6 11.9 18.4 - - -
370 USA
Burlingame, USA
9.7 6.1 7.2 4.6 3.2 3 3.2 4.6 16.8 28.9 14 9.5 11.1 6.2 - -
371 USA
Kensington, USA
9.7 5.9 7.8 4.8 3.7 3.6 4.4 6.5 15.1 27.6 15 9.3 10.1 6.7 - -
372 USA
Woodacre, USA
9.7 4.8 5.5 3.8 3 2 2.3 3.7 22.2 29.8 15.3 7.4 10 4.7 - -
373 USA
San Francisco, USA
9.6 7.1 8.1 4.7 4.1 4.2 4.8 6.1 12.7 26.5 14.4 9 13.9 7.1 12.6 10
374 USA
Barstow, USA
9.5 8.5 7.4 4.2 5.7 5.3 10.3 6.7 16.4 23.1 15.2 5.6 4.3 6.7 - -
375 USA
Belmont, USA
9.5 5.7 6.8 3.9 3 2.9 3.7 5.1 18.2 28.3 14.4 8.8 11.4 5.9 - -
376 USA
Emerald Hills, USA
9.5 4.8 6.6 4.8 3.1 2.7 3.2 4.9 18.1 26.3 13.3 9.2 9.8 5.9 - -
377 USA
San Bruno, USA
9.5 5.5 6.9 4.3 3.5 3.4 3.7 5.3 15.9 28.6 13.1 8.6 11.3 5.8 - -
378 USA
Winchester, USA
9.5 7.5 7.3 4.9 7.4 9.7 9.9 10.2 12.7 16.2 14.2 8 6.3 7.8 7.4 10.2
379 USA
Calipatria, USA
9.4 6.6 7.6 5.8 6.7 9.1 10.7 10 11.1 11.7 12.3 8.8 10 6.5 - -
380 USA
Cayucos, USA
9.4 6.7 7.4 4.4 4.4 5.2 4.5 6.2 14.3 21.1 14.3 10.5 8.7 5.9 - -
381 USA
Crestline, USA
9.4 8.5 6.7 4.9 6.7 9.8 9.7 9.3 13.4 16.3 11.4 8.6 6.4 8.2 9.3 11.4
382 USA
Cupertino, USA
9.4 3.9 6.5 3.7 3 3 3.9 6.1 20.9 27 15.7 7.5 7.6 5.6 - -
383 USA
Keeler, USA
9.4 4.8 5.6 4.2 4.5 5.2 6.8 6.3 15.4 29.8 19.5 5.3 4.7 4.7 7.1 8.1
384 USA
Lake Arrowhead, USA
9.4 7 6.9 6.3 8.1 7.8 7.7 6.6 14 18.3 13.3 6.1 5.6 7.6 - -
385 USA
Palmdale, USA
9.4 5.1 5.7 3.6 5.2 4.2 6.2 5.6 18.8 27 17 5 4.9 5.5 - -
386 USA
Portola Valley, USA
9.4 3.6 5.9 3.8 2.9 2.7 3.8 5.4 24.8 27.3 13 6.4 6.6 5.2 - -
387 USA
Oxnard, USA
9.3 5.1 6.2 3.5 5.6 7.3 6.7 8.4 12.6 19.5 17.8 10.8 7.2 7.2 8.7 9.5
388 USA
Santa Maria, USA
9.3 5 6.5 4.4 5.2 6.1 6.7 8.5 15.5 21.9 15.8 8.4 7.1 6.5 7.1 7.5
389 USA
Goleta, USA
9.2 4.4 7.2 4.3 5.4 6.3 6.8 8.8 14 19.5 18 9 6.4 6.9 7.9 9.5
390 USA
San Luis Obispo, USA
9.2 5.6 7.2 3.9 3.8 4.4 5.2 6.4 20.2 20.6 16.8 8.6 7.1 5.4 7.6 8.4
391 USA
Nipomo, USA
9.1 5.4 7.5 4.5 4.7 5.8 7.2 7.3 14.4 19.8 16.4 8.5 7.2 6.2 8.4 9.7
392 USA
San Rafael, USA
9.1 6.4 7.3 4.9 3.4 2.7 3.6 4.3 18.6 26.3 14 6.6 11.1 5.7 11.2 10
393 USA
McKinleyville, USA
9 7.6 7.6 6.2 5.4 3.8 4.3 4.9 7.4 23.6 13.1 9.7 11.9 6.5 - -
394 USA
Phelan, USA
9 7.6 6.3 5 6.5 5.4 7.3 6.6 13.8 21.2 14.8 6 5.8 6.2 - -
395 USA
Point Reyes Station, USA
9 4.5 5.5 4.7 4.1 3.8 3.9 5.4 14 31.8 13 6.1 8.1 5.3 - -
396 USA
Gualala, USA
8.9 6.4 7.4 7.3 7.1 4.7 - 3.9 6.5 22.4 13.2 6.5 8 6 - -
397 USA
Helendale, USA
8.9 6.9 6.5 4.1 5 5 6.5 6 15 22.4 13.3 6.1 6.2 6.2 - -
398 USA
Muir Beach, USA
8.9 6 6.4 5.4 4.9 5.4 6.2 6.4 10 31.6 12.4 3.9 6.4 6.3 - -
399 USA
Pinon Hills, USA
8.8 4.8 5 3.7 3.9 3.4 4.7 5 13.9 27.3 12.2 3.9 3.4 4.4 - -
400 USA
Huron, USA
8.7 4 4.9 3.5 4 6.5 7.1 7 21.5 20.1 12.3 4.9 5.2 5.8 10.3 10.3

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