SmogRank / World / Asia / Indonesia / Bali

Most polluted cities in Bali, Indonesia

4 measured cities, last 30 days; 4 above the WHO 24-hour guideline. Worst: Tabanan at 39.2 µg/m³, #61 in the world.

About 228K people in these 4 cities breathed unhealthy air on an average day over the last 30 days.

Ranked by people: each city's population times its share of unhealthy days, those with a daily mean over 35.4 µg/m³ (US AQI 101+). That is how many people living there breathed unhealthy air on an average day. Only cities measured at 2 or more places at least 3 km apart are ranked: one monitor shouldn't speak for a whole city. Population is the city itself, not its wider metro area.

West Nusa TenggaraEast JavaBali: 4 measured cities#4 Denpasar: 26.2 µg/m³#3 Dalung: 32.1 µg/m³#2 Ubud: 36.1 µg/m³#1 Tabanan: 39.2 µg/m³
Each dot is a measured city, coloured by its PM2.5; tap a dot to open the city.
← Denpasar 156K 100K0
Every measured city in Bali, Indonesia with monitors in two or more places, one column each, ranked by people breathing unhealthy air: height is people on an average day, colour its average. Point at it to read a city; tap to open it.
  1. 1Denpasarlow-cost sensors 156K
  2. 2Ubudlow-cost sensors 42.4K
  3. 3Tabananlow-cost sensors 18K
  4. 4Dalunglow-cost sensors 11.1K

Low-cost sensors: consumer units, counted only in cities with no government-grade monitor; they read close to reference monitors on the whole, but 15 to 25% high in humid air. How we use them.

Good0–50
Moderate51–100
Sensitive groups101–150
Unhealthy151–200
Very unhealthy201–300
Hazardous301+

The US EPA's Air Quality Index for PM2.5 (2024 breakpoints). Show values as: µg/m³ · US AQI · India AQI · China AQI · European AQI · UK DAQI · Canada AQHI+. About the scales

Estimated: cities without a monitor

Bali cities we can't measure, with model estimates for the last 7 days. Listed by population, not ranked: estimates aren't precise enough to rank. Model estimates from the Copernicus Atmosphere Monitoring Service (CAMS), adjusted to measured cities nearby where there are any. Adjusted, a single day lands within ×1.5 of what a monitor would read about two times in three; unadjusted, it can be off by half or double. Treat them as a guide, not a measurement.

City7-day estimateBand
Klungkung≈ 20 µg/m³Moderate
Singaraja≈ 17 µg/m³Moderate
Sukawati≈ 20 µg/m³Moderate
Negara≈ 16 µg/m³Moderate
Banjar≈ 16 µg/m³Moderate
Benoa≈ 14 µg/m³Moderate
Amlapura≈ 13 µg/m³Moderate
Amlapura city≈ 13 µg/m³Moderate
Kuta≈ 14 µg/m³Moderate
Batubulan≈ 14 µg/m³Moderate
Seririt≈ 16 µg/m³Moderate
Tuban≈ 14 µg/m³Moderate
Bedugul≈ 13 µg/m³Moderate

Use this board

SmogRank, most polluted cities in Bali, Indonesia, PM2.5, last 30 days to 6 Oct 2026, 23:00 UTC, smogrank.com/id/region/bali?w=30d.

Download top 10 (PNG)

You're welcome to reuse a single chart, image or figure with this citation and a link. Terms. Raw monitor readings in bulk are published by OpenAQ, under each provider's licence.

Updated 2026-10-06 23:07 UTC. Values are PM2.5 (fine particles), the median of each city's monitors, as the US AQI PM2.5 sub-index.