Riau is the Most Polluted in Indonesia This Morning (April 28)
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Riau has the worst air quality in Indonesia this morning. Based on the Air Pollution Standard Index (ISPU) page of the Ministry of Environment and Forestry (KLHK) on Tuesday (April 28, 2026) at 8:00 AM WIB, it was revealed that Riau's air quality index is 94.
According to KLHK's Air Pollution Control Directorate, ISPU is a unitless number used to describe ambient air quality conditions at a specific location, based on impacts on human health, aesthetic value, and other living beings.
ISPU calculations are based on measurements of seven air pollutant parameters: PM10, PM2.5, NO2, SO2, CO, O3, and HC. Pollutant parameter measurements are spread across 72 stations in various regions.
(Read: Jakarta's Air Quality is the Second Worst in the World This Morning (Friday, June 17, 2022))
Based on KLHK Regulation No. 14 of 2020 concerning the Air Pollution Standard Index, an ISPU in the 0-50 range means good air quality, 51-100 means moderate air quality, and 101-200 means unhealthy air that harms humans, animals, and plants.
Next, very unhealthy air quality in the 201-300 range can increase health risks for sensitive groups. Meanwhile, hazardous air quality in the range above 300 can seriously harm health and requires immediate handling.
Following Riau, West Java ranks second worst in Indonesia with an air quality index of 93. Then, West Sumatra is in third place with an air quality index of 90.
This means no region has hazardous air quality.
Below is the list of the 10 provinces with the worst air quality index in Indonesia on Tuesday, April 28, 2026, at 8:00 AM WIB.
1. Riau: 94
2. West Java: 93
3. West Sumatra: 90
4. South Sumatra: 89
5. Banten: 88
6. Aceh: 84
7. Jambi: 83
8. South Sulawesi: 80
9. Central Kalimantan: 78
10. Central Java: 68
(Read: Jakarta's Air Quality is the Second Worst in the World This Morning (Friday, June 17, 2022))
"Disclosure: This is an AI-generated translation of the original article. We strive for accuracy, but please note that automated translations may contain errors or slight inconsistencies."
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