East Java Air Quality Tonight (14/10) Worst in Indonesia

East Java's air quality is the worst in Indonesia tonight. Based on the Air Pollution Standard Index (ISPU) page of the Ministry of Environment and Forestry (KLHK) on Tuesday (October 14, 2025) at 18:00 WIB, East Java's air quality index was 99.

According to the KLHK's Directorate of Air Pollution Control, APSI is a unitless number used to describe ambient air quality conditions at a specific location and is based on its impact on human health, aesthetic value, and other living things.

APSI calculations are based on measurements 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: Nearly 300 Natural Disasters Until Mid-February 2024)

Based on 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 means moderate air quality, and 101-200 indicates unhealthy air quality that is harmful 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 over 300 can seriously harm health and requires prompt action.

Below East Java, Banten ranks second worst in Indonesia with an air quality index of 95. Then, in third place is South Sumatra with an air quality index of 94.

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 Tuesday, October 14, 2025, at 18:00 WIB.

1. East Java: 99

2. Banten: 95

3. South Sumatra: 94

4. Jambi: 93

5. West Java: 92

6. Riau: 88

7. West Sumatra: 87

8. South Kalimantan: 86

9. Lampung: 78

10. Central Java: 69

(Read: Nearly 300 Natural Disasters Until Mid-February 2024)