South Sumatra's Air Quality on the Morning of October 1st is the Worst in Indonesia

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 Wednesday (October 1, 2025) at 08:00 AM WIB, it was revealed that the air quality index in South Sumatra was 97.

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

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Based on Ministry of Environment and Forestry 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 detrimental to humans, animals, and plants.

Furthermore, 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, Lampung 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 region has hazardous air quality.

Here is a list of the 10 provinces with the worst air quality index in Indonesia on Wednesday, October 1, 2025, at 08:00 AM WIB.

1. South Sumatra: 97

2. Lampung: 96

3. Banten: 95

4. Riau Islands: 92

5. Jambi: 90

6. South Kalimantan: 89

7. West Sumatra: 88

8. West Java: 86

9. Bali: 83

10. North Sumatra: 81

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