Riau Islands' Air Quality on Sunday Morning (Nov 16) Worst in Indonesia

Air quality in Riau Islands this morning is the worst in Indonesia. Based on the Air Pollutant Standard Index (ISPU) page of the Ministry of Environment and Forestry (KLHK) on Sunday (16/11/2025) at 08:00 AM WIB, it was revealed that the air quality index in Riau Islands was 95.

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

ISPU calculations are 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.

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Based on KLHK Regulation No. 14 of 2020 concerning the Air Pollutant Standard Index, an ISPU in the range of 0-50 indicates good air quality, a range of 51-100 means moderate air quality, and a range of 101-200 indicates unhealthy air quality that is harmful 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 above 300 can seriously harm health and requires prompt action.

Below Riau Islands, Jambi ranks second worst in Indonesia with an air quality index of 91. Then, in third place is West Java with an air quality index of 88.

This means that no region has hazardous air quality.

Below is a list of the 10 provinces with the worst air quality index in Indonesia on Sunday, November 16, 2025, at 08:00 AM WIB.

1. Riau Islands: 95

2. Jambi: 91

3. West Java: 88

4. North Sumatra: 85

5. Central Kalimantan: 83

6. South Sumatra: 82

7. West Sumatra: 81

8. Central Java: 74

9. South Sulawesi: 73

10. Aceh: 71

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