World Air Quality
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Live air quality (AQI) city ranking
World's most polluted cities
World's most polluted countries
World's most polluted cities 2019 (PM2.5)
The most polluted cities according to data aggregated from over 60,000 data points.
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City
Zurich, Switzerland
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2019
NEW
World air quality report
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2019 Report - English
2019 World air quality report
Download PDF
PM2.5 Legend
WHO target
Good
Moderate
Unhealthy for sensitive groups
Unhealthy
Very unhealthy
Hazardous
Unit:
µg/m³
Rank
City
2019 AVG
JAN
FEB
MAR
APR
MAY
JUN
JUL
AUG
SEP
OCT
NOV
DEC
2018 AVG
2017 AVG
2254
Zurich, Switzerland
10.9
11.8
20.9
12
17.3
8.6
8.6
9.3
8.3
7.2
7.6
10.6
8.9
11.2
10.4
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0 - 10 µg/m³
10 - 12 µg/m³
12.1 - 35.4 µg/m³
35.5 - 55.4 µg/m³
55.5 - 150.4 µg/m³
150.5 - 250.4 µg/m³
>250.4 µg/m³