Air Quality Lab — Saint-Denis, Reunion
Air Quality Profile·
Saint-Denis reports an annual PM2.5 of 7.1 µg/m³. That's close to the WHO 2021 annual guideline (5 µg/m³) and well inside historically healthy ranges.
Saint-Denis
Reunion
ReunionAnnual Average
GoodWHO annual classification
7.1µg/m³
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
PM2.5
7.87.8 µg/m³ — Good
8.38.3 µg/m³ — Good
7.57.5 µg/m³ — Good
6.16.1 µg/m³ — Good
6.86.8 µg/m³ — Good
6.96.9 µg/m³ — Good
6.96.9 µg/m³ — Good
6.76.7 µg/m³ — Good
6.76.7 µg/m³ — Good
6.66.6 µg/m³ — Good
7.27.2 µg/m³ — Good
7.97.9 µg/m³ — Good
Jan
Feb
Mar
Apr
May
Jun
7.87.8 µg/m³ — Good
8.38.3 µg/m³ — Good
7.57.5 µg/m³ — Good
6.16.1 µg/m³ — Good
6.86.8 µg/m³ — Good
6.96.9 µg/m³ — Good
Jul
Aug
Sep
Oct
Nov
Dec
6.96.9 µg/m³ — Good
6.76.7 µg/m³ — Good
6.76.7 µg/m³ — Good
6.66.6 µg/m³ — Good
7.27.2 µg/m³ — Good
7.97.9 µg/m³ — Good
Best months: Apr, Aug, OctWorst months: Jan–Feb, Dec
Good5–10 µg/m³
Based on WUSTL PM2.5 dataset (2020–2024) · WHO 2021 thresholds
Confidence: ●●●
How air quality compares
Compared across Reunion
Saint-Denis: 7.1 µg/m³. Typical range in Reunion: 6.2–7.2 µg/m³. Low anchor: Saint-Benoît, 5.1 µg/m³. High anchor: Le Tampon, 8.0 µg/m³.
13 cities tracked