Sunday Morning Air Pollution (1/4): South Sumatra Worst, How About Other Regions?

Air quality in South Sumatra this morning is the worst in Indonesia. Based on the Air Pollution Standard Index (ISPU) page of the Ministry of Environment and Forestry (KLHK) on Sunday (1/4/2026) 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, ISPU is a dimensionless number used to describe the ambient air quality conditions at a certain location, based on its impact on human health, aesthetic value, and other living things.

ISPU 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: Due to Forest Fires, South Kalimantan's ARI Cases Reached 189 Thousand as of September 2023)

Based on Minister 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, 51-100 means moderate air quality, and 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 prompt action.

Below South Sumatra, Riau ranks as the second worst in Indonesia with an air quality index of 98. 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 Sunday, January 4, 2026, at 08:00 AM WIB.

1. South Sumatra: 100

2. Riau: 98

3. Banten: 95

4. Jambi: 93

5. West Sumatra: 88

6. West Java: 80

7. North Sumatra: 79

8. Lampung: 74

9. Central Kalimantan: 70

10. East Kalimantan: 69

(Read: Due to Forest Fires, South Kalimantan's ARI Cases Reached 189 Thousand as of September 2023)