Air Quality Lab — Aileu, Timor Leste
Air Quality Profile·
Aileu reports an annual PM2.5 of 9.6 µg/m³. That's close to the WHO 2021 annual guideline (5 µg/m³) and well inside historically healthy ranges.
Aileu
Timor Leste
Timor LesteAnnual Average
GoodWHO annual classification
9.6µg/m³
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
PM2.5
1313 µg/m³ — Fair
1616 µg/m³ — Moderate
1212 µg/m³ — Fair
1010 µg/m³ — Fair
6.86.8 µg/m³ — Good
5.55.5 µg/m³ — Good
6.06.0 µg/m³ — Good
4.84.8 µg/m³ — Excellent
5.45.4 µg/m³ — Good
1212 µg/m³ — Fair
1111 µg/m³ — Fair
1212 µg/m³ — Fair
Jan
Feb
Mar
Apr
May
Jun
1313 µg/m³ — Fair
1616 µg/m³ — Moderate
1212 µg/m³ — Fair
1010 µg/m³ — Fair
6.86.8 µg/m³ — Good
5.55.5 µg/m³ — Good
Jul
Aug
Sep
Oct
Nov
Dec
6.06.0 µg/m³ — Good
4.84.8 µg/m³ — Excellent
5.45.4 µg/m³ — Good
1212 µg/m³ — Fair
1111 µg/m³ — Fair
1212 µg/m³ — Fair
Best months: Jun, Aug–SepWorst months: Jan–Feb, Dec
Excellent0–5 µg/m³Good5–10 µg/m³Fair10–15 µg/m³Moderate15–25 µg/m³
Based on WUSTL PM2.5 dataset (2020–2024) · WHO 2021 thresholds
Confidence: ●●●
How air quality compares
Compared across Timor Leste
Aileu: 9.6 µg/m³. Typical range in Timor Leste: 8.0–10.8 µg/m³. Low anchor: Lospalos, 6.9 µg/m³. High anchor: Likisá, 10.9 µg/m³.
9 cities tracked