- World Air Quality
- Community
- Products
- Shop Home
- Best Sellers
- Best Sellers
- Shop Commercial
- Best Sellers
- Best Sellers
- Shop Home
- Solutions HomeOn-the-goOfficesAir monitoringSchoolsHospitals & clinicsDental officesDoctors' officesLaboratoriesHospitalityMuseumsFind a dealerFind an IQAir dealer to customize your air quality solutions.start
Find a dealer
Our Customers
Air quality services - Support
World's most polluted cities 2019 (PM2.5)
The most polluted cities according to data aggregated from over 60,000 data points.
Filter cities by
2019
NEW
World air quality report
Download PDF
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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 |  Branistea, Romania | 25.9 | 28.3 | 35.6 | 26.5 | 13 | 7 | 4.7 | - | 10.9 | 20.7 | 43.6 | 19 | 34.6 | 16.8 | - |
| 2 | Iasi, Romania | 22.4 | 30.4 | 25.5 | 28 | 16.4 | 13.3 | 21.2 | 15.9 | 21.4 | 20.8 | 25 | 27 | 7.9 | 27 | - |
| 3 | Bucharest, Romania | 18.4 | 27 | 30.4 | 20.8 | 16.6 | 13.1 | 15.9 | 13.5 | 13.1 | 14 | 21 | 16.8 | 19.2 | 20.3 | - |
| 4 | Brasov, Romania | 18 | 27.1 | 25.1 | 18.3 | 14.9 | 7.9 | 11.2 | 11.1 | 11.8 | 11.2 | 21.9 | 14.7 | 43.7 | 21.3 | - |
| 5 | Cluj-Napoca, Romania | 15.7 | 20.7 | 19.9 | 10.1 | 6.3 | 18.3 | 11.9 | 11.3 | 11.8 | 13 | 20.4 | 15.7 | 25.2 | 21.4 | - |
| 6 | Magurele, Romania | 15.7 | 26.3 | - | - | 13.9 | 12.3 | 13.8 | 12.6 | 11.1 | 15.8 | 23.7 | 14.9 | 20 | 18.9 | - |
| 7 | Botosani, Romania | 13.3 | 23.8 | 15.6 | 11.4 | 11.4 | 7.7 | 11.5 | 10.8 | 8.7 | 9.8 | 15 | 15.7 | 22.6 | 14.8 | - |
| 8 | Baia Mare, Romania | 11.9 | - | - | 11.1 | 13 | 7.8 | 10.2 | 10.3 | 10 | 11.1 | 22.3 | 13.9 | 17.8 | - | - |
Track your air quality anywhere you are
Download the app
