Bali's Morning Air Pollution (24/10) is the Worst in Indonesia

Air quality in Bali 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 Friday (October 24, 2025) at 08:00 AM WIB, it was revealed that Bali's air quality index was 103.

According to the KLHK's Directorate of Air Pollution Control, APSI is a unitless number used to describe ambient air quality conditions at a specific location and is based on its impact on human health, aesthetic value, and other living things.

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

(Read: The Impact of Damage Due to Natural Disasters in January-March 2023)

Based on KLHK 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 indicates unhealthy air quality that is detrimental to humans, animals, and plants.

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

Below Bali, Banten ranks second worst in Indonesia with an air quality index of 95. Then, in third place is South Sumatra with an air quality index of 91.

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 Friday, October 24, 2025, at 08:00 AM WIB.

1. Bali: 103

2. Banten: 95

3. South Sumatra: 91

4. East Java: 90

5. Aceh: 89

6. West Sumatra: 87

7. North Sumatra: 86

8. West Java: 84

9. South Sulawesi: 75

10. Central Java: 73

(Read: The Impact of Damage Due to Natural Disasters in January-March 2023)