On Nov 4, 2025, South Sumatra recorded Indonesia's worst air quality (ISPU 104, unhealthy), followed by Riau Islands and Jambi. No regions reached hazardous levels, according to KLHK's Air Pollutant S ...

West Java had the worst air quality in Indonesia on Oct 29, 2025, with an ISPU of 99. The description details ISPU calculations, categories, and lists the top 10 provinces with the poorest air quality ...