Riau's Morning Air Pollution (22/12) is the Worst in Indonesia

Air quality in Riau 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 (22/12/2025) at 08.00 AM WIB, it was revealed that Riau's air quality index was 99.

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

ISPU 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: 4.5 M Earthquake Shakes 94 Km Southwest of Banda Aceh,)

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 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 for sensitive groups. Meanwhile, hazardous air quality in the range of more than 300 can seriously harm health and requires quick handling.

Below Riau, Banten ranks second worst in Indonesia with an air quality index of 95. Then, Jambi is in third place with an air quality index of 93.

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 22, 2025, at 08.00 AM WIB.

1. Riau: 99

2. Banten: 95

3. Jambi: 93

4. South Sumatra: 90

5. Aceh: 87

6. North Sumatra: 85

7. North Sumatra: 84

8. West Java: 83

9. Lampung: 74

10. Central Java: 69

(Read: 4.5 M Earthquake Shakes 94 Km Southwest of Banda Aceh,)