| 44 | Adelaide, Australia | Oceania | AQI 30 | PM2.5 5.3 µg/m³ |
| 116 | Auckland, New Zealand | Oceania | AQI 34 | PM2.5 6 µg/m³ |
| 127 | Brisbane, Australia | Oceania | AQI 34 | PM2.5 6.3 µg/m³ |
| 142 | Perth, Australia | Oceania | AQI 35 | PM2.5 6.3 µg/m³ |
| 181 | Ottawa, Canada | North America | AQI 37 | PM2.5 6.3 µg/m³ |
| 216 | Melbourne, Australia | Oceania | AQI 38 | PM2.5 7.1 µg/m³ |
| 277 | Port Elizabeth, South Africa | Africa & Middle East | AQI 40 | PM2.5 7.4 µg/m³ |
| 279 | Sydney, Australia | Oceania | AQI 40 | PM2.5 7.5 µg/m³ |
| 332 | Cape Town, South Africa | Africa & Middle East | AQI 42 | PM2.5 7.8 µg/m³ |
| 343 | Mogadishu, Somalia | Africa & Middle East | AQI 42 | PM2.5 8 µg/m³ |
| 377 | Sarasota FL, United States of America | North America | AQI 43 | PM2.5 7.9 µg/m³ |
| 384 | Calgary, Canada | North America | AQI 43 | PM2.5 8.1 µg/m³ |
| 461 | Toronto, Canada | North America | AQI 45 | PM2.5 8.5 µg/m³ |
| 471 | Edmonton, Canada | North America | AQI 45 | PM2.5 8.8 µg/m³ |
| 499 | Recife, Brazil | South America | AQI 46 | PM2.5 8.6 µg/m³ |
| 523 | Montreal, Canada | North America | AQI 46 | PM2.5 8.9 µg/m³ |
| 554 | Jacksonville FL, United States of America | North America | AQI 47 | PM2.5 8.9 µg/m³ |
| 563 | Fortaleza, Brazil | South America | AQI 47 | PM2.5 9 µg/m³ |
| 570 | Sapporo, Japan | Asia | AQI 47 | PM2.5 9 µg/m³ |
| 641 | São Luís, Brazil | South America | AQI 48 | PM2.5 9.8 µg/m³ |
| 650 | Salvador, Brazil | South America | AQI 49 | PM2.5 9.2 µg/m³ |
| 683 | Havana, Cuba | North America | AQI 49 | PM2.5 9.6 µg/m³ |
| 703 | Queens NY, United States of America | North America | AQI 49 | PM2.5 9.8 µg/m³ |
| 746 | San Antonio TX, United States of America | North America | AQI 50 | PM2.5 9.8 µg/m³ |
| 775 | Mombasa, Kenya | Africa & Middle East | AQI 50 | PM2.5 10.1 µg/m³ |