Central Kalimantan Most Polluted in Indonesia This Morning (29/11)

Air quality in Central Kalimantan this morning is the worst in Indonesia. Based on the Air Pollution Standard Index (APSI) page of the Ministry of Environment and Forestry (KLHK) on Saturday (29/11/2025) at 08.00 AM WIB, it was revealed that the air quality index in Central Kalimantan was 99.

According to the KLHK Directorate of Air Pollution Control, APSI is a unitless number used to describe ambient air quality conditions in a specific location and is based on its impact 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. Air pollutant parameter measurements are spread across 72 stations in various regions.

(Read: West Kalimantan Produced the Most CO2 Emissions from Forest and Land Fires Until July 2023)

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

Next, 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 handling.

Below Central Kalimantan, Riau Islands (Kep. Riau) ranks second worst in Indonesia with an air quality index of 95. Then, in third place is Riau with an air quality index of 94.

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 Saturday, November 29, 2025, at 08.00 AM WIB.

1. Central Kalimantan: 99

2. Riau Islands: 95

3. Riau: 94

4. Jambi: 92

5. West Sumatra: 86

6. Aceh: 84

7. Jakarta: 79

8. South Sulawesi: 74

9. Central Java: 69

10. South Kalimantan: 67

(Read: West Kalimantan Produced the Most CO2 Emissions from Forest and Land Fires Until July 2023)