10 Most Polluted Regions in Indonesia Tonight (25/8)

Air quality in Banten tonight is the worst in Indonesia. Based on the Ministry of Environment and Forestry (KLHK)''s Air Pollution Standard Index (ISPU) page on Monday (August 25, 2025) at 6:00 PM WIB, it was revealed that the air quality index in Banten was 118.

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

(Read: Despite the Dry Season, Many Floods in Early July 2024)

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, 51-100 means moderate air quality, and 101-200 means unhealthy air quality that is detrimental to humans, animals, and plants.

Next, very unhealthy air quality in the 201-300 range can increase health risks for sensitive groups. Meanwhile, hazardous air quality in the range of over 300 can seriously harm health and requires quick action.

Below Banten, DKI Jakarta ranks second worst in Indonesia with an air quality index of 115. Then, in third place is Riau Islands with an air quality index of 100.

This means no region has hazardous air quality.

Here is a list of the 10 provinces with the worst air quality index in Indonesia on Monday, August 25, 2025, at 6:00 PM WIB.

1. Banten: 118

2. DKI Jakarta: 115

3. Riau Islands: 100

4. West Java: 99

5. Bali: 91

6. South Sumatra: 90

7. Riau: 89

8. Central Kalimantan: 88

9. West Sumatra: 87

10. Aceh: 86

(Read: Despite the Dry Season, Many Floods in Early July 2024)