East Java's Air Pollution This Morning (16/10) is the Worst in Indonesia

This morning, air quality in East Java is the worst in Indonesia. Based on the Air Pollution Standard Index (ISPU) page of the Ministry of Environment and Forestry (KLHK) on Thursday (October 16, 2025) at 08:00 AM WIB, East Java's air quality index was revealed to be 100.

According to the Directorate of Air Pollution Control, KLHK, 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 organisms.

ISPU calculation is based on measurements of seven air pollutant parameters: PM10, PM2.5, NO2, SO2, CO, O3, and HC. Measurements of these air pollutant parameters are spread across 72 stations in various regions.

(Read: Kurious Survey: Many People Feel Indonesia's Air Quality is Poor)

Based on Minister of Environment and Forestry Regulation No. 14 of 2020 concerning the Air Pollution Standard Index, an ISPU range of 0-50 indicates good air quality, 51-100 means moderate air quality, and 101-200 means unhealthy air quality, detrimental to humans, animals, and plants.

Furthermore, very unhealthy air quality in the 201-300 range 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 East Java, Riau ranks second worst in Indonesia with an air quality index of 96. Then, in third place is Banten with an air quality index of 95.

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 Thursday, October 16, 2025, at 08:00 AM WIB.

1. East Java: 100

2. Riau: 96

3. Banten: 95

4. Riau Islands: 90

5. South Sumatra: 89

6. South Kalimantan: 87

7. West Java: 86

8. Aceh: 85

9. DKI Jakarta: 81

10. Lampung: 75

(Read: Kurious Survey: Many People Feel Indonesia's Air Quality is Poor)