10 Regions with the Least Air Pollution in Indonesia, Rembang Regency Ranks 1st on Wednesday Afternoon

Rembang Regency's air quality this afternoon is the cleanest in Indonesia. Based on the air quality index version of the Ministry of Environment and Forestry (KLHK), Rembang Regency had a score of 9 on Wednesday (19/11/2025) at 4:00 PM WIB.

At that time, Rembang Regency's air quality was classified as good, meaning the pollutant levels in Rembang Regency's air were very minimal. Furthermore, Madiun Regency ranked second with an air quality index of 13. Next, Nabire Regency was in third place with an air quality index of 15.

Here is the complete list of the 10 cities with the cleanest air quality in Indonesia according to KLHK on Wednesday, November 19, 2025, at 4:00 PM WIB.

1. Rembang Regency (Central Java): 9
2. Madiun Regency (East Java): 13
3. Nabire Regency (Central Papua): 15
4. Kendari (Southeast Sulawesi): 19
5. Probolinggo (East Java): 22
6. Bulungan Regency (North Kalimantan): 23
7. Purwakarta Regency (West Java): 24
8. Lumajang Regency (East Java): 25
9. Samarinda (East Kalimantan): 26
10. Gresik (East Java): 28

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Based on Ministry of Environment and Forestry Regulation No. 14 of 2020 concerning the Air Pollutant Standard Index, KLHK applies the following air quality index classification.

• 0-50: good
• 51-100: moderate
• 101-200: unhealthy
• 201-300: very unhealthy
• 300+: hazardous

This means that on Wednesday (19/11/2025) at 4:00 PM WIB, all these cities had good air quality.

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