West Java's Air Quality Tonight (29/1) is the Worst in Indonesia

West Java's air quality tonight is the worst in Indonesia. Based on the Air Pollutant Standard Index (APSI) page of the Ministry of Environment and Forestry (KLHK) on Thursday (January 29, 2026) at 6:00 PM WIB, it was revealed that West Java's air quality index was 383.

According to the KLHK 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 impacts on human health, aesthetic value, and other living things.

APSI calculation is based on the measurement results of seven air pollutant parameters, namely PM10, PM2.5, NO2, SO2, CO, O3, and HC. Measurements of air pollutant parameters are spread across 72 stations in various regions.

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Based on KLHK Regulation No. 14 of 2020 concerning the Air Pollutant 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 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 over 300 can seriously harm health and requires prompt action.

Below West Java, DKI Jakarta ranks second worst in Indonesia with an air quality index of 331. Then, in third place is South Sumatra with an air quality index of 99.

This means that West Java and DKI Jakarta have hazardous air quality.

Here is a list of the 10 provinces with the worst air quality index in Indonesia on Thursday, January 29, 2026, at 6:00 PM WIB.

1. West Java: 383

2. DKI Jakarta: 331

3. South Sumatra: 99

4. Banten: 95

5. Riau: 92

6. Jambi: 91

7. West Kalimantan: 89

8. Aceh: 87

9. South Kalimantan: 85

10. West Nusa Tenggara: 78

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