Air Pollution Thursday Night (18/9): Banten Worst, How About Other Regions?

Air quality in Banten tonight is the worst in Indonesia. Based on the Air Pollutant Standard Index (ISPU) page of the Ministry of Environment and Forestry (KLHK) on Thursday (18/9/2025) at 18:00 WIB, it was revealed that Banten''s air quality index was 95.

According to the KLHK''s Directorate of Air Pollution Control, ISPU is a unitless number used to describe ambient air quality conditions at a specific location, based on its impact on human health, aesthetic value, and other living things.

ISPU calculations are based on the measurement results of seven air pollutant parameters: PM10, PM2.5, NO2, SO2, CO, O3, and HC. Measurements of these air pollutant parameters are distributed across 72 stations in various regions.

(Read: Floods Still the Most Frequent Disaster in Indonesia Until March 2025 )

Based on KLHK Regulation No. 14 of 2020 concerning the Air Pollutant Standard Index, an ISPU range of 0-50 indicates good air quality, 51-100 means moderate air quality, and 101-200 means unhealthy air quality that is harmful to humans, animals, and plants.

Furthermore, very unhealthy air quality in the range of 201-300 can increase health risks for sensitive groups. Meanwhile, hazardous air quality in the range of more than 300 can seriously harm health and requires quick action.

Below Banten, Riau Islands ranks second worst in Indonesia with an air quality index of 92. Then, in third place is Riau with an air quality index of 91.

This means no region has hazardous air quality.

Here is a list of the 10 provinces with the worst air quality index in Indonesia on Thursday, September 18, 2025, at 18:00 WIB.

1. Banten: 95

2. Riau Islands: 92

3. Riau: 91

4. Lampung: 88

5. DKI Jakarta: 87

6. Aceh: 86

7. West Java: 84

8. Central Java: 81

9. North Sumatra: 80

10. Central Kalimantan: 77

(Read: Floods Still the Most Frequent Disaster in Indonesia Until March 2025 )