Air Pollution Wednesday Evening (March 11): West Java is the Worst, How About Other Regions?

West Java has the worst air quality in Indonesia tonight. Based on the Air Pollution Standard Index (ISPU) page of the Ministry of Environment and Forestry (KLHK) on Wednesday (March 11, 2026) at 18.00 WIB, it was revealed that the air quality index in West Java is 101.

According to the KLHK 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: Nearly 5 Thousand Natural Disaster Events in Indonesia Throughout 2023, Forest and Land Fires Dominate)

Based on KLHK Regulation No. 14 of 2020 concerning the Air Pollution Standard Index, ISPU in the 0-50 range means good air quality, the 51-100 range means moderate air quality, and the 101-200 range 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, Central Kalimantan ranks second worst in Indonesia with an air quality index of 100. Then, North Sumatra ranks third with an air quality index of 96.

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 Wednesday, March 11, 2026 at 18.00 WIB.

1. West Java: 101

2. Central Kalimantan: 100

3. North Sumatra: 96

4. South Sumatra: 95

5. Banten: 94

6. North Sumatra: 91

7. West Sumatra: 87

8. Riau: 86

9. Jambi: 85

10. DKI Jakarta: 84

(Read: Nearly 5 Thousand Natural Disaster Events in Indonesia Throughout 2023, Forest and Land Fires Dominate)