Air Quality Lab — Rio de Janeiro, Brazil
Air Quality Profile
Rio de Janeiro reports an annual PM2.5 of 15.7 µg/m³. That's meaningfully above the WHO 2021 guideline of 5 µg/m³ yet within the EU annual limit of 25 µg/m³.
Rio de Janeiro
Brazil
BrazilAnnual Average
ModerateWHO annual classification
15.7µg/m³
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
PM2.5
1717 µg/m³ — Moderate
1616 µg/m³ — Moderate
1616 µg/m³ — Moderate
1414 µg/m³ — Fair
1616 µg/m³ — Moderate
1616 µg/m³ — Moderate
1616 µg/m³ — Moderate
1616 µg/m³ — Moderate
1717 µg/m³ — Moderate
1616 µg/m³ — Moderate
1313 µg/m³ — Fair
1515 µg/m³ — Fair
Jan
Feb
Mar
Apr
May
Jun
1717 µg/m³ — Moderate
1616 µg/m³ — Moderate
1616 µg/m³ — Moderate
1414 µg/m³ — Fair
1616 µg/m³ — Moderate
1616 µg/m³ — Moderate
Jul
Aug
Sep
Oct
Nov
Dec
1616 µg/m³ — Moderate
1616 µg/m³ — Moderate
1717 µg/m³ — Moderate
1616 µg/m³ — Moderate
1313 µg/m³ — Fair
1515 µg/m³ — Fair
Best months: Apr, Nov–DecWorst months: Jan, Jun, Sep
Fair10–15 µg/m³Moderate15–25 µg/m³
Based on WUSTL PM2.5 dataset (2020–2024) · WHO 2021 thresholds
Confidence: ●●●
How air quality compares
Compared across Brazil
Rio de Janeiro: 15.7 µg/m³. Typical range in Brazil: 8.4–13.2 µg/m³. Low anchor: Itabuna, 7.2 µg/m³. High anchor: Manaus, 31.4 µg/m³.
1,136 cities tracked