Riau's Nighttime Air Quality (April 24) is the Worst in Indonesia
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Riau's air quality tonight is the worst in Indonesia. Based on the Ministry of Environment and Forestry (KLHK) Air Pollution Standard Index (ISPU) page on Friday (April 24, 2026) at 6:00 PM WIB, it was revealed that Riau's air quality index is 101.
According to the KLHK Air Pollution Control Directorate, ISPU is a unitless number used to describe ambient air quality conditions at a specific location and is 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. Air pollutant parameter measurements are spread across 72 stations in various regions.
(Read: Floods Dominate Disaster Events in Indonesia Q1 2026)
Based on KLHK Regulation No. 14 of 2020 concerning the Air Pollution Standard Index, ISPU in the 0-50 range means good air quality, 51-100 means moderate air quality, and 101-200 means unhealthy air quality that is harmful to 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.
Below Riau, Banten ranks second worst in Indonesia with an air quality index of 92. Then, West Java ranks third with an air quality index of 89.
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 Friday, April 24, 2026 at 6:00 PM WIB.
1. Riau: 101
2. Banten: 92
3. West Java: 89
4. West Sumatra: 88
5. Jambi: 87
6. Aceh: 86
7. South Sulawesi: 79
8. Central Kalimantan: 77
9. East Kalimantan: 76
10. East Java: 71
(Read: Floods Dominate Disaster Events in Indonesia Q1 2026)
"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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