Insight / Air quality & pollution
Cleaner air is not lower carbon
PM2.5 is not a CO2 rank. MMR 2023 mean exposure highest 35.1 μg/m³; BN lowest 7.6 but highest CO2e/capita 20.2 t. ID largest tonnes (812 Mt) at 2.87 t/person. PH mid-pack PM2.5 22.2 among five peers; lowest of five on CO2e/capita 1.50 (vs ID 2.87, TH 3.96, VN 4.27, MY 8.32).
2023
Particulate exposure
National mean exposure retains its source vintage.
Mean PM2.5 exposure
| Economy | Value | Vintage |
|---|---|---|
| Brunei | 7.56922294285959 | 2023 |
| Cambodia | 19.4262068786841 | 2023 |
| Indonesia | 20.8444642120249 | 2023 |
| Laos | 25.9762899979383 | 2023 |
| Malaysia | 15.8650142432827 | 2023 |
| Myanmar | 35.0665284656219 | 2023 |
| Philippines | 22.2053003753671 | 2023 |
| Singaporehub | 15.1427300261359 | 2023 |
| Thailand | 23.4870743016258 | 2023 |
| Vietnam | 24.7845479100313 | 2023 |
| Timor-Leste | 11.9874398587491 | 2023 |
World Bank WDI EN.ATM.PM25.MC.M3 (IHME GBD 2023 air pollution exposure)
2017
WHO-guideline exceedance
The historical exceedance share uses the stated threshold and vintage.
Population above WHO guideline
| Economy | Value | Vintage |
|---|---|---|
| Brunei | 0 | 2017 |
| Cambodia | 100 | 2017 |
| Indonesia | 95.5671472610627 | 2017 |
| Laos | 100 | 2017 |
| Malaysia | 90.537343806725 | 2017 |
| Myanmar | 100 | 2017 |
| Philippines | 96.3706587650922 | 2017 |
| Singaporehub | 100 | 2017 |
| Thailand | 100 | 2017 |
| Vietnam | 100 | 2017 |
| Timor-Leste | 100 | 2017 |
2024
Carbon emissions
Per-capita and total emissions remain distinct scale stories.
CO2e per capita
| Economy | Value | Vintage |
|---|---|---|
| Brunei | 20.2426516194424 | 2024 |
| Cambodia | 1.10207037315065 | 2024 |
| Indonesia | 2.86503978188758 | 2024 |
| Laos | 3.35435098295083 | 2024 |
| Malaysia | 8.32321620146515 | 2024 |
| Myanmar | 0.575463259318228 | 2024 |
| Philippines | 1.5030109111702 | 2024 |
| Singaporehub | 9.75144363129176 | 2024 |
| Thailand | 3.96005269352319 | 2024 |
| Vietnam | 4.26605675468195 | 2024 |
| Timor-Leste | 0.499343870436187 | 2024 |
Total CO2e
| Economy | Value | Vintage |
|---|---|---|
| Brunei | 9.3667 | 2024 |
| Cambodia | 19.4392 | 2024 |
| Indonesia | 812.2042 | 2024 |
| Laos | 26.0627 | 2024 |
| Malaysia | 295.9542 | 2024 |
| Myanmar | 31.3628 | 2024 |
| Philippines | 174.1143 | 2024 |
| Singaporehub | 58.8681 | 2024 |
| Thailand | 283.8091 | 2024 |
| Vietnam | 430.8192 | 2024 |
| Timor-Leste | 0.6994 | 2024 |
Mixed vintages
Fossil electricity
Electricity share is not total final energy consumption.
Fossil-fuel electricity share
| Economy | Value | Vintage |
|---|---|---|
| Brunei | 99.875044626919 | 2022 |
| Cambodia | 35.190753617741 | 2022 |
| Indonesia | 84.0174410556914 | 2023 |
| Laos | 23.8658854421822 | 2022 |
| Malaysia | 81.568943608581 | 2022 |
| Myanmar | 55.856200401568 | 2022 |
| Philippines | 77.864861229431 | 2022 |
| Singaporehub | 94.9959365760033 | 2023 |
| Thailand | 80.4357802843331 | 2023 |
| Vietnam | 50.9022632553832 | 2022 |
| Timor-Leste | 99.6285529715762 | 2021 |
Mixed vintages
Fossil-energy gap
The unreliable total-energy series remains visibly empty.
Fossil-fuel energy share
| Economy | Value | Vintage |
|---|---|---|
| Brunei | GAP | GAP |
| Cambodia | GAP | GAP |
| Indonesia | GAP | GAP |
| Laos | GAP | GAP |
| Malaysia | GAP | GAP |
| Myanmar | GAP | GAP |
| Philippines | GAP | GAP |
| Singaporehub | GAP | GAP |
| Thailand | GAP | GAP |
| Vietnam | GAP | GAP |
| Timor-Leste | GAP | GAP |
Use this research
Cite this page
ASEAN in Data (2026). Air quality & pollution. /insights/air-quality