Air Quality Lab — Monterrey, Mexico
Air Quality Profile
Monterrey reports an annual PM2.5 of 20.4 µg/m³. That's meaningfully above the WHO 2021 guideline of 5 µg/m³ yet within the EU annual limit of 25 µg/m³.
Monterrey
Mexico
MexicoAnnual Average
ModerateWHO annual classification
20.4µg/m³
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
PM2.5
2424 µg/m³ — Moderate
2626 µg/m³ — Poor
2323 µg/m³ — Moderate
2020 µg/m³ — Moderate
2323 µg/m³ — Moderate
1616 µg/m³ — Moderate
1616 µg/m³ — Moderate
1919 µg/m³ — Moderate
1919 µg/m³ — Moderate
2121 µg/m³ — Moderate
1919 µg/m³ — Moderate
2121 µg/m³ — Moderate
Jan
Feb
Mar
Apr
May
Jun
2424 µg/m³ — Moderate
2626 µg/m³ — Poor
2323 µg/m³ — Moderate
2020 µg/m³ — Moderate
2323 µg/m³ — Moderate
1616 µg/m³ — Moderate
Jul
Aug
Sep
Oct
Nov
Dec
1616 µg/m³ — Moderate
1919 µg/m³ — Moderate
1919 µg/m³ — Moderate
2121 µg/m³ — Moderate
1919 µg/m³ — Moderate
2121 µg/m³ — Moderate
Best months: Jun–AugWorst months: Jan–Feb, May
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 Mexico
Monterrey: 20.4 µg/m³. Typical range in Mexico: 10.8–16.4 µg/m³. Low anchor: Nogales, 6.3 µg/m³. High anchor: Texcoco de Mora, 28.4 µg/m³.
464 cities tracked