West Kalimantan's Morning Air Pollution (3/2) Worst in Indonesia

Air quality in West Kalimantan 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 Tuesday (2/3/2026) at 10:00 AM WIB, it was revealed that the air quality index in West Kalimantan was 105.

According to the Directorate of Air Pollution Control of KLHK, 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 organisms.

ISPU calculation is based on the measurement results of seven air pollutant parameters: PM10, PM2.5, NO2, SO2, CO, O3, and HC. The measurements of these pollutant parameters are distributed across 72 stations in various regions.

(Read: Air Quality in Major Indonesian Cities is Poor, Far from WHO Standards)

Based on KLHK Regulation No. 14 of 2020 concerning the Air Pollution Standard Index, ISPU 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 more than 300 can seriously harm health and requires quick action.

Below West Kalimantan, Riau ranks as the second worst in Indonesia with an air quality index of 100. Then, in third place is Banten with an air quality index of 95.

This means that no region has hazardous air quality.

Here is a list of the 10 provinces with the worst air quality index in Indonesia on Tuesday, February 3, 2026, at 10:00 AM WIB.

1. West Kalimantan: 105

2. Riau: 100

3. Banten: 95

4. South Sumatra: 91

5. Jambi: 89

6. South Kalimantan: 87

7. West Java: 83

8. Aceh: 82

9. North Sumatra: 79

10. DKI Jakarta: 76

(Read: Air Quality in Major Indonesian Cities is Poor, Far from WHO Standards)