Daily report · 18 October 2026
World air quality on 18 October 2026
On 18 October 2026 at 12:00 UTC, Palembang, Indonesia had the most polluted air of any monitored city, at US AQI 296 (Very Unhealthy). Padang, Indonesia (289) and Manaus, Brazil (259) followed. Indonesia had 5 of the 20 most polluted cities. The day before, Pekanbaru topped the list at 416. The cleanest air was in Victoria de Durango, Mexico (5).
20 most polluted cities
- 296PalembangIndonesia · Very Unhealthy
- 289PadangIndonesia · Very Unhealthy
- 259ManausBrazil · Very Unhealthy
- 214PekanbaruIndonesia · Very Unhealthy
- 207Johor BahruMalaysia · Very Unhealthy
- 194Kuala LumpurMalaysia · Unhealthy
- 188KuchingMalaysia · Unhealthy
- 172MedanIndonesia · Unhealthy
- 167KhulnaBangladesh · Unhealthy
- 167PeshawarPakistan · Unhealthy
- 165NagpurIndia · Unhealthy
- 164AhmedabadIndia · Unhealthy
- 161DhakaBangladesh · Unhealthy
- 158Kuwait CityKuwait · Unhealthy
- 158KatowicePoland · Unhealthy
- 157FaisalabadPakistan · Unhealthy
- 156KotaIndia · Unhealthy
- 155ShanghaiChina · Unhealthy
- 153GhaziabadIndia · Unhealthy
- 152DepokIndonesia · Unhealthy
20 cleanest cities
- 5Victoria de DurangoMexico · Good
- 6Ulan BatorMongolia · Good
- 7CanberraAustralia · Good
- 7CalgaryCanada · Good
- 7HelsinkiFinland · Good
- 7SheffieldUnited Kingdom · Good
- 7Port LouisMauritius · Good
- 7KrasnoyarskRussia · Good
- 7GöteborgSweden · Good
- 8AdelaideAustralia · Good
- 8BirminghamUnited Kingdom · Good
- 9PhiladelphiaUnited States · Good
- 10Buenos AiresArgentina · Good
- 10CórdobaArgentina · Good
- 10MadridSpain · Good
- 10KaragandyKazakhstan · Good
- 10Santiago de QuerétaroMexico · Good
- 10LisbonPortugal · Good
- 11WinnipegCanada · Good
- 11GlasgowUnited Kingdom · Good
US AQI from government and research monitoring stations, recorded at 12:00 UTC. Modelled estimates are excluded.