Wednesday Morning Air Pollution (17/12): Banten is the Worst, How About Other Regions?

Air quality in Banten this morning is the worst in Indonesia. According to the Air Pollution Standard Index (APSI) page of the Ministry of Environment and Forestry (KLHK) on Wednesday (17/12/2025) at 08.00 AM WIB, Banten's air quality index was 95.

According to the Directorate of Air Pollution Control KLHK, APSI is a unitless number used to describe ambient air quality conditions at a certain location, 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. Measurements of these air pollutant parameters are spread across 72 stations in various regions.

(Read: Jakarta Road Sections Still Flooded (July 9, 2025 at 09.00 AM WIB))

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, 51-100 means moderate air quality, and 101-200 indicates unhealthy air quality that is harmful to humans, animals, and plants.

Next, 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 prompt action.

Below Banten, Riau ranks second worst in Indonesia with an air quality index of 93. Then, in third place is Central Kalimantan with an air quality index of 89.

This means that no region has hazardous air quality.

Here is a list of the 10 provinces with the worst air quality index in Indonesia on Wednesday, December 17, 2025 at 08.00 AM WIB.

1. Banten: 95

2. Riau: 93

3. Central Kalimantan: 89

4. North Sumatra: 85

5. West Sumatra: 82

6. Lampung: 74

7. East Kalimantan: 73

8. Central Java: 70

9. South Kalimantan: 66

10. West Java: 65

(Read: Jakarta Road Sections Still Flooded (July 9, 2025 at 09.00 AM WIB))