Riau's Air Quality This Morning (15/12) Worst in Indonesia

Riau's air quality 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 Monday (15/12/2025) at 08.00 AM WIB, Riau's air quality index was 100.

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

ISPU calculations are based on the measurement results of seven air pollutant parameters: PM10, PM2.5, NO2, SO2, CO, O3, and HC. Measurements of these air pollutant parameters are spread across 72 stations in various regions.

(Read: Last Five Earthquakes Recorded by BMKG (Saturday, July 19, 2025, 18:25:55 WIB))

Based on Ministry of Environment and Forestry Regulation No. 14 of 2020 concerning the Air Pollution Standard Index, an ISPU 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.

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 over 300 can seriously harm health and requires rapid handling.

Below Riau, South Sumatra ranks as the second worst in Indonesia with an air quality index of 99. 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 Monday, December 15, 2025, at 08.00 AM WIB.

1. Riau: 100

2. South Sumatra: 99

3. Banten: 95

4. Jambi: 94

5. Aceh: 91

6. Central Kalimantan: 89

7. West Sumatra: 87

8. North Sumatra: 83

9. East Kalimantan: 77

10. Lampung: 74

(Read: Last Five Earthquakes Recorded by BMKG (Saturday, July 19, 2025, 18:25:55 WIB))