10 Most Polluted Regions in Indonesia This Morning (April 25)
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West Java has the worst air quality in Indonesia this morning. Based on the Air Pollution Standard Index (ISPU) page of the Ministry of Environment and Forestry (KLHK) on Saturday (April 25, 2026) at 08.00 WIB, it was revealed that West Java's air quality index is 116.
According to KLHK's Air Pollution Control Directorate, ISPU is a unitless number used to describe ambient air quality conditions at a specific location and is based on impacts on human health, aesthetic values, and other living beings.
ISPU calculations are based on measurements of seven air pollutant parameters: PM10, PM2.5, NO2, SO2, CO, O3, and HC. Air pollutant parameter measurements are spread across 72 stations in various regions.
(Read: Number of Natural Disaster Victims in Indonesia as of July 8, 2025)
Based on KLHK Regulation No. 14 of 2020 concerning the Air Pollution Standard Index, ISPU in the 0-50 range means good air quality, 51-100 means moderate air quality, and 101-200 means unhealthy air quality that is harmful to humans, animals, and plants.
Next, air quality is very unhealthy in the 201-300 range, which can increase health risks for sensitive groups. Meanwhile, hazardous air quality in the range above 300 can seriously harm health and requires immediate handling.
Below West Java, Lampung ranks second worst in Indonesia with an air quality index of 108. Then, Riau ranks third with an air quality index of 92.
This means that no region has hazardous air quality.
Here is the list of 10 provinces with the worst air quality index in Indonesia on Saturday, April 25, 2026 at 08.00 WIB.
1. West Java: 116
2. Lampung: 108
3. Riau: 92
4. South Sumatra: 88
5. Aceh: 85
6. Banten: 83
7. North Sumatra: 82
8. Jambi: 80
9. South Sulawesi: 79
10. East Java: 71
(Read: Number of Natural Disaster Victims in Indonesia as of July 8, 2025)
"Disclosure: This is an AI-generated translation of the original article. We strive for accuracy, but please note that automated translations may contain errors or slight inconsistencies."
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