Air Quality Lab — Santa Ana, El Salvador
Air Quality Profile·
Santa Ana reports an annual PM2.5 of 22.3 µg/m³. That's meaningfully above the WHO 2021 guideline of 5 µg/m³ yet within the EU annual limit of 25 µg/m³.
Santa Ana
El Salvador
El SalvadorAnnual Average
ModerateWHO annual classification
22.3µg/m³
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
PM2.5
1818 µg/m³ — Moderate
1919 µg/m³ — Moderate
2020 µg/m³ — Moderate
2929 µg/m³ — Poor
2727 µg/m³ — Poor
2323 µg/m³ — Moderate
2525 µg/m³ — Moderate
2424 µg/m³ — Moderate
2626 µg/m³ — Poor
2525 µg/m³ — Moderate
1717 µg/m³ — Moderate
1717 µg/m³ — Moderate
Jan
Feb
Mar
Apr
May
Jun
1818 µg/m³ — Moderate
1919 µg/m³ — Moderate
2020 µg/m³ — Moderate
2929 µg/m³ — Poor
2727 µg/m³ — Poor
2323 µg/m³ — Moderate
Jul
Aug
Sep
Oct
Nov
Dec
2525 µg/m³ — Moderate
2424 µg/m³ — Moderate
2626 µg/m³ — Poor
2525 µg/m³ — Moderate
1717 µg/m³ — Moderate
1717 µg/m³ — Moderate
Best months: Jan, Nov–DecWorst months: Apr–May, Sep
Moderate15–25 µg/m³Poor25–35 µg/m³
Based on WUSTL PM2.5 dataset (2020–2024) · WHO 2021 thresholds
Confidence: ●●●
How air quality compares
Compared across El Salvador
Santa Ana: 22.3 µg/m³. Typical range in El Salvador: 15.9–21.5 µg/m³. Low anchor: Puerto El Triunfo, 14.9 µg/m³. High anchor: San Salvador, 24.6 µg/m³.
24 cities tracked