Aceh's Air Quality on Wednesday Morning (Oct 15) Ranks Worst in Indonesia

Aceh's air quality this morning is the worst in Indonesia. Based on the Air Pollution Standard Index (ISPU) page of the Ministry of Environment and Forestry (KLHK) on Wednesday (15/10/2025) at 08:00 AM WIB, Aceh's air quality index was revealed to be 97.

According to the KLHK's Directorate of Air Pollution Control, ISPU is a dimensionless 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, namely PM10, PM2.5, NO2, SO2, CO, O3, and HC. Air pollutant parameter measurements are spread across 72 stations in various regions.

(Read: There were 749 Natural Disaster Events in Indonesia Until the End of March 2023, Floods Were the Most Frequent)

Based on KLHK Regulation No. 14 of 2020 concerning the Air Pollution Standard Index, ISPU 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 prompt action.

Below Aceh, Banten ranks second worst in Indonesia with an air quality index of 95. Then, in third place is Jambi with an air quality index of 94.

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 15, 2025, at 08:00 AM WIB.

1. Aceh: 97

2. Banten: 95

3. Jambi: 94

4. South Sumatra: 93

5. East Java: 92

6. Riau: 91

7. South Kalimantan: 87

8. West Java: 85

9. North Sumatra: 81

10. DKI Jakarta: 80

(Read: There were 749 Natural Disaster Events in Indonesia Until the End of March 2023, Floods Were the Most Frequent)