West Java's Nighttime Air Quality (April 14) is the Worst in Indonesia

West Java's air quality tonight is the worst in Indonesia. Based on the Air Pollution Standard Index (ISPU) page of the Ministry of Environment and Forestry (KLHK) on Tuesday (April 14, 2026) at 6:00 PM WIB, it was revealed that West Java's air quality index is 127.

According to KLHK's Air Pollution Control Directorate, ISPU is a unitless number used to describe ambient air quality conditions at a specific location, based on impacts on human health, aesthetic values, and other living beings.

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

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

Next, very unhealthy air quality in the 201-300 range can increase health risks for sensitive groups. Meanwhile, hazardous air quality in the range above 300 can seriously harm health and requires immediate handling.

Below West Java, Riau ranks second worst in Indonesia with an air quality index of 99. Then, South Sumatra is in third place with an air quality index of 91.

This means that no region has hazardous air quality.

Here is the list of the 10 provinces with the worst air quality index in Indonesia on Tuesday, April 14, 2026 at 6:00 PM WIB.

1. West Java: 127

2. Riau: 99

3. South Sumatra: 91

4. Aceh: 87

5. Jambi: 84

6. South Sulawesi: 79

7. Yogyakarta: 77

8. Central Java: 75

9. Banten: 74

10. East Java: 71

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