South Sumatra Most Polluted in Indonesia Tonight (6/12)

Air quality in South Sumatra tonight is the worst in Indonesia. Based on the Air Pollution Standard Index (ISPU) page of the Ministry of Environment and Forestry (KLHK) on Saturday (6/12/2025) at 18:00 Western Indonesian Time, it was revealed that the air quality index in South Sumatra was 105.

According to the Directorate of Air Pollution Control KLHK, ISPU is a unitless number used to describe the ambient air quality conditions at a certain location and is 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, namely PM10, PM2.5, NO2, SO2, CO, O3, and HC. Air pollutant parameter measurements are distributed across 72 stations in various regions.

(Read: Floods, Natural Disasters That Frequently Hit Indonesia as of September 2025)

Based on Ministry of Environment and Forestry Regulation No. 14 of 2020 concerning the Air Pollution Standard Index, an ISPU 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 detrimental 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 handling.

Below South Sumatra, Central Kalimantan ranks second worst in Indonesia with an air quality index of 96. Then, in third place is Banten with an air quality index of 95.

This means that no area has hazardous air quality.

Here is a list of the 10 provinces with the worst air quality index in Indonesia on Saturday, December 6, 2025, at 18:00 Western Indonesian Time.

1. South Sumatra: 105

2. Central Kalimantan: 96

3. Banten: 95

4. Riau: 91

5. West Sumatra: 87

6. West Java: 85

7. North Sumatra: 83

8. Central Java: 78

9. DKI Jakarta: 76

10. East Kalimantan: 75

(Read: Floods, Natural Disasters That Frequently Hit Indonesia as of September 2025)