10 Most Polluted Regions in Indonesia Tonight (16/8)

Air quality in West Java is the worst in Indonesia tonight. Based on the Air Pollution Standard Index (ISPU) page of the Ministry of Environment and Forestry (KLHK) on Saturday (16/8/2025) at 6:00 PM WIB, it was revealed that the air quality index in West Java was 107.

According to the Directorate of Air Pollution Control KLHK, ISPU is a dimensionless number used to describe the ambient air quality conditions at a certain location and is based on the 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: Banten's Air Quality in the Morning (6/8) is the Worst in Indonesia)

Based on Minister of Environment and Forestry Regulation No. 14 of 2020 concerning the Air Pollution Standard Index, ISPU in the range of 0-50 indicates good air quality, the range of 51-100 means moderate air quality, and the range of 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 rapid handling.

Below West Java, Banten ranks second worst in Indonesia with an air quality index of 104. Then, in third place is Riau Islands with an air quality index of 99.

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, August 16, 2025 at 6:00 PM WIB.

1. West Java: 107

2. Banten: 104

3. Riau Islands: 99

4. Lampung: 96

5. North Sumatra: 95

6. Riau: 94

7. West Sumatra: 88

8. South Sumatra: 87

9. Central Kalimantan: 86

10. Bali: 85

(Read: Banten's Air Quality in the Morning (6/8) is the Worst in Indonesia)