East Java Most Polluted in Indonesia Tonight (27/11)

Air quality in East Java is the worst in Indonesia tonight. Based on the Air Pollution Standard Index (APSI) page of the Ministry of Environment and Forestry (KLHK) on Thursday (27/11/2025) at 6:00 PM WIB, it was revealed that the air quality index in East Java was 137.

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

APSI 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.

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According to KLHK Regulation No. 14 of 2020 concerning the Air Pollution Standard Index, an APSI in the range of 0-50 indicates good air quality, 51-100 indicates 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 201-300 range can increase health risks for sensitive groups. Meanwhile, hazardous air quality above 300 can seriously harm health and requires prompt action.

Below East Java, Riau ranks second worst in Indonesia with an air quality index of 99. Central Kalimantan then takes the third position with an air quality index of 98.

This means no region has hazardous air quality.

Below is a list of the 10 provinces with the worst air quality index in Indonesia on Thursday, November 27, 2025, at 6:00 PM WIB.

1. East Java: 137

2. Riau: 99

3. Central Kalimantan: 98

4. Banten: 95

5. West Java: 93

6. Jambi: 92

7. Aceh: 90

8. West Sumatra: 87

9. Central Java: 86

10. South Sumatra: 83

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