West Java's Air Quality on Monday Morning (April 13) is the Worst in Indonesia

West Java's air quality this morning is the worst in Indonesia. Based on the Air Pollution Standard Index (ISPU) page of the Ministry of Environment and Forestry (KLHK) on Monday (April 13, 2026) at 08:00 WIB, it was revealed that West Java's air quality index is 110.

According to KLHK's Air Pollution Control Directorate, ISPU 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 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.

(Read: Floods and Forest Fires, the Most Common Disasters in Indonesia Throughout 2025)

Based on KLHK Regulation No. 14 of 2020 concerning the Air Pollution Standard Index, ISPU in the 0-50 range means 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, DKI Jakarta ranks second worst in Indonesia with an air quality index of 94. Then, in third place is Riau with an air quality index of 93.

This means that no region has hazardous air quality.

Here is the list of 10 provinces with the worst air quality index in Indonesia on Monday, April 13, 2026 at 08:00 WIB.

1. West Java: 110

2. DKI Jakarta: 94

3. Riau: 93

4. South Sumatra: 90

5. Aceh: 88

6. West Sumatra: 87

7. East Kalimantan: 81

8. Jambi: 80

9. South Sulawesi: 79

10. Banten: 74

(Read: Floods and Forest Fires, the Most Common Disasters in Indonesia Throughout 2025)