Banten''s Air Quality Tonight (4/9) is the 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 Thursday (4/9/2025) at 6:00 PM WIB, it was revealed that Banten''s air quality index was 94.

According to the KLHK Directorate of Air Pollution Control, 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. The air pollutant parameter measurements are spread across 72 stations in various regions.

(Read: 137 Natural Disasters Occurred Towards the End of January 2024, Floods Were the Most Frequent)

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

Furthermore, very unhealthy air quality in the 201-300 range 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, South Sumatra ranks second worst in Indonesia with an air quality index of 93. Then, in third place is Riau Islands with an air quality index of 92.

This means that no region has hazardous air quality.

Here is the list of the 10 provinces with the worst air quality index in Indonesia on Thursday, September 4, 2025, at 6:00 PM WIB.

1. Banten: 94

2. South Sumatra: 93

3. Riau Islands: 92

4. North Sumatra: 90

5. Central Kalimantan: 89

6. Aceh: 87

7. West Java: 86

8. Central Java: 83

9. DKI Jakarta: 78

10. Lampung: 73

(Read: 137 Natural Disasters Occurred Towards the End of January 2024, Floods Were the Most Frequent)