Banten''s Night Air Pollution (23/9) Worst in Indonesia

Banten''s air quality tonight is the worst in Indonesia. Based on the Air Pollution Standard Index (APSI) page of the Ministry of Environment and Forestry (KLHK) on Tuesday (23/9/2025) at 6:00 PM WIB, Banten''s air quality index was 95.

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

APSI calculation is based on the measurement results of seven air pollutant parameters, namely PM10, PM2.5, NO2, SO2, CO, O3, and HC. Air pollutant parameter measurements are spread across 72 stations in various regions.

(Read: Air Quality in Major Indonesian Cities is Poor, Far from WHO Standards)

Based on Ministry of Environment and Forestry Regulation No. 14 of 2020 concerning the Air Pollution Standard Index, an APSI in the range of 0-50 indicates good air quality, 51-100 means moderate air quality, and 101-200 indicates 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 over 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 Bali with an air quality index of 90.

This means no region has hazardous air quality.

Here is the list of the 10 provinces with the worst air quality index in Indonesia on Tuesday, September 23, 2025, at 6:00 PM WIB.

1. Banten: 95

2. Riau Islands: 92

3. Bali: 90

4. Aceh: 88

5. West Sumatra: 87

6. Jambi: 86

7. West Java: 85

8. North Sumatra: 84

9. West Papua: 79

10. East Java: 73

(Read: Air Quality in Major Indonesian Cities is Poor, Far from WHO Standards)