Air Quality in Riau Islands Friday Morning (22/8) Worst in Indonesia

The air quality in Riau Islands 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 (August 22, 2025) at 08.00 AM WIB, it was revealed that the air quality index in Riau Islands was 100.

According to the Directorate of Air Pollution Control of KLHK, APSI is a dimensionless number used to describe ambient air quality conditions at a specific location, 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.

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Based on Ministry of Environment and Forestry Regulation No. 14 of 2020 concerning the Air Pollution Standard Index, APSI in the range of 0-50 indicates good air quality, 51-100 indicates 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 for sensitive groups. Meanwhile, hazardous air quality in the range of more than 300 can seriously harm health and requires quick action.

Below Riau Islands, Bali ranked second worst in Indonesia with an air quality index of 95. Then, in third place was East Java with an air quality index of 92.

This means no region has hazardous air quality.

Here is a list of the 10 provinces with the worst air quality index in Indonesia on Friday, August 22, 2025, at 08.00 AM WIB.

1. Kep. Riau: 100

2. Bali: 95

3. Jawa Timur: 92

4. Suamtera Utara: 91

5. Aceh: 90

6. Sumatera Selatan: 88

7. Sumatera Barat: 87

8. Riau: 86

9. Banten: 81

10. Sumatera Utara: 80

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