10 Regions with the Lowest Air Pollution in Indonesia, Kutai Barat Regency Ranks 1st on Tuesday Morning

Kutai Barat Regency's air quality this morning is the cleanest in Indonesia. Based on the air quality index version of the Ministry of Environment and Forestry (KLHK), Kutai Barat Regency scored 10 on Tuesday (25/11/2025) at 06:00 AM WIB.

At that time, Kutai Barat Regency's air quality was classified as good, meaning the pollutant levels in Kutai Barat Regency's air were very minimal. Furthermore, Madiun Regency ranked second with an air quality index of 13. Next, South Lampung Regency was in third position with an air quality index of 14.

Below is the complete list of the 10 cities with the cleanest air quality in Indonesia according to KLHK on Tuesday, November 25, 2025, at 06:00 AM WIB.

1. Kutai Barat Regency (East Kalimantan): 10
2. Madiun Regency (East Java): 13
3. South Lampung Regency (Lampung): 14
4. Nabire Regency (Central Papua): 17
5. Tarakan (North Kalimantan): 20
6. Sukabumi Regency (West Java): 22
7. Lumajang Regency (East Java): 25
8. Murung Raya Regency (Central Kalimantan): 26
9. Musi Banyuasin Regency (South Sumatra): 27
10. Probolinggo (East Java): 28

(Read: 10 Peat Hydrological Area Regions Most Vulnerable to Forest and Land Fires in 2023)

Based on KLHK Regulation No. 14 of 2020 concerning the Air Pollutant Standard Index, KLHK implements the following air quality index classifications.

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

This means that on Tuesday (25/11/2025) at 06:00 AM WIB, all these cities had good air quality.

(Read: Indications of Forest and Land Fire Area in Central Kalimantan Province in the Last Decade)