Siak, Riau had the cleanest air quality in Indonesia this afternoon. According to the air quality index from the Ministry of Environment and Forestry (KLHK), Siak scored 15 on Tuesday, November 28, 2023, at 3:00 PM WIB.
At that time, Siak's air quality was categorized as "good," meaning pollutant levels were very minimal. Barito Selatan followed in second place with an air quality index of 22, and Pontianak was third with an index of 26.
Below is a complete list of the 10 cities with the cleanest air quality in Indonesia according to the KLHK on Tuesday, November 28, 2023, at 3:00 PM WIB:
1. Siak (Riau): 15
2. Barito Selatan (Central Kalimantan): 22
3. Pontianak (West Kalimantan): 26
4. Banjarmasin (South Kalimantan): 29
5. Palu (Central Sulawesi): 33
6. Ambon (Maluku): 37
7. Mamuju (West Sulawesi): 39
8. Ternate (North Maluku): 40
9. Balikpapan (East Kalimantan): 43
10. Tanjung Pinang (Riau Islands): 44
Based on the Minister of Environment and Forestry Regulation No. 14 of 2020 concerning the Air Pollutant Standard Index, the KLHK uses the following air quality index classifications:
* 0-50: Good
* 51-100: Moderate
* 101-200: Unhealthy
* 201-300: Very Unhealthy
* 300+: Hazardous
Therefore, on Tuesday, November 28, 2023, at 3:00 PM WIB, all of the aforementioned cities had good air quality.