Air Pollution Thursday Morning (25/12): South Sumatra Worst, How About Other Regions?

Air quality in South Sumatra this morning is the worst in Indonesia. Based on the Air Pollutant Standard Index (APSI) page of the Ministry of Environment and Forestry (KLHK) on Thursday (25/12/2025) at 08:00 AM WIB, it was revealed that the air quality index in South Sumatra was 100.

According to the KLHK Directorate of Air Pollution Control, APSI is a dimensionless 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. Measurements of these air pollutant parameters are spread across 72 stations in various regions.

(Read: Floods, The Most Frequent Disaster in Indonesia as of November 28, 2025)

Based on KLHK Regulation No. 14 of 2020 concerning the Air Pollutant 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 more than 300 can seriously harm health and requires quick action.

Below South Sumatra, Riau ranks second worst in Indonesia with an air quality index of 97. Then, in third place is Banten with an air quality index of 95.

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 Thursday, December 25, 2025, at 08:00 AM WIB.

1. South Sumatra: 100

2. Riau: 97

3. Banten: 95

4. West Java: 94

5. Aceh: 90

6. West Sumatra: 87

7. North Sumatra: 82

8. North Sumatra: 81

9. Lampung: 74

10. Central Kalimantan: 73

(Read: Floods, The Most Frequent Disaster in Indonesia as of November 28, 2025)