Air Quality Lab — San Salvador, El Salvador
Air Quality Profile
San Salvador reports an annual PM2.5 of 24.6 µg/m³. That's meaningfully above the WHO 2021 guideline of 5 µg/m³ yet within the EU annual limit of 25 µg/m³.
San Salvador
El Salvador
El SalvadorAnnual Average
ModerateWHO annual classification
24.6µg/m³
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
PM2.5
2424 µg/m³ — Moderate
2424 µg/m³ — Moderate
2424 µg/m³ — Moderate
3535 µg/m³ — Unhealthy
2828 µg/m³ — Poor
2222 µg/m³ — Moderate
2424 µg/m³ — Moderate
2424 µg/m³ — Moderate
2323 µg/m³ — Moderate
2424 µg/m³ — Moderate
2323 µg/m³ — Moderate
2222 µg/m³ — Moderate
Jan
Feb
Mar
Apr
May
Jun
2424 µg/m³ — Moderate
2424 µg/m³ — Moderate
2424 µg/m³ — Moderate
3535 µg/m³ — Unhealthy
2828 µg/m³ — Poor
2222 µg/m³ — Moderate
Jul
Aug
Sep
Oct
Nov
Dec
2424 µg/m³ — Moderate
2424 µg/m³ — Moderate
2323 µg/m³ — Moderate
2424 µg/m³ — Moderate
2323 µg/m³ — Moderate
2222 µg/m³ — Moderate
Best months: Jun, Sep, DecWorst months: Jan, Apr–May
Moderate15–25 µg/m³Poor25–35 µg/m³Unhealthy35–50 µg/m³
Based on WUSTL PM2.5 dataset (2020–2024) · WHO 2021 thresholds
Confidence: ●●●
How air quality compares
Compared across El Salvador
San Salvador: 24.6 µg/m³. Typical range in El Salvador: 15.9–21.5 µg/m³. Low anchor: Puerto El Triunfo, 14.9 µg/m³.
24 cities tracked