10 Most Polluted Regions in Indonesia This Morning (26/7)

Air quality in Banten this morning is the worst in Indonesia. Based on the Air Pollution Standard Index (APSI) page of the Ministry of Environment and Forestry (KLHK) on Saturday (July 26, 2025) at 08.00 AM WIB, it was revealed that the air quality index in Banten was 155.

According to the Directorate of Air Pollution Control KLHK, APSI is a unitless number used to describe ambient air quality conditions at a specific 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 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 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 Banten, West Java ranks second worst in Indonesia with an air quality index of 138. Then, in third place is Lampung with an air quality index of 133.

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 Saturday, July 26, 2025 at 08.00 AM WIB.

1. Banten: 155

2. West Java: 138

3. Lampung: 133

4. Riau: 121

5. North Sumatra: 113

6. Riau Islands: 97

7. West Sumatra: 96

8. North Sumatra: 92

9. South Sumatra: 90

10. DKI Jakarta: 87

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