SmogRank / Mexico

Air quality in Romita estimated

Guanajuato, Mexico. No ground monitor we can use is in this city, so these numbers are model estimates, not measurements.

≈ 11 µg/m³
Moderate

Estimated PM2.5, 7-day average to 2026-09-30, about 0.8× the WHO 24-hour guideline. 30-day average ≈ 24 µg/m³.

Model estimate from the Copernicus Atmosphere Monitoring Service (CAMS), scaled by 2.25 to match 10 measured cities within 300 km over the last week. Adjusted this way, a single day lands within ×1.5 of what a monitor would read about two times in three: a guide, not a measurement. Not ranked on SmogRank's boards.

Last 30 days, estimated

152026-09-01: ≈ 28 µg/m³ (estimate)09-012026-09-02: ≈ 37 µg/m³ (estimate)2026-09-03: ≈ 47 µg/m³ (estimate)2026-09-04: ≈ 47 µg/m³ (estimate)2026-09-05: ≈ 34 µg/m³ (estimate)2026-09-06: ≈ 33 µg/m³ (estimate)2026-09-07: ≈ 24 µg/m³ (estimate)2026-09-08: ≈ 35 µg/m³ (estimate)09-082026-09-09: ≈ 25 µg/m³ (estimate)2026-09-10: ≈ 20 µg/m³ (estimate)2026-09-11: ≈ 36 µg/m³ (estimate)2026-09-12: ≈ 32 µg/m³ (estimate)2026-09-13: ≈ 31 µg/m³ (estimate)2026-09-14: ≈ 33 µg/m³ (estimate)2026-09-15: ≈ 21 µg/m³ (estimate)09-152026-09-16: ≈ 40 µg/m³ (estimate)2026-09-17: ≈ 21 µg/m³ (estimate)2026-09-18: ≈ 10 µg/m³ (estimate)2026-09-19: ≈ 10 µg/m³ (estimate)2026-09-20: ≈ 28 µg/m³ (estimate)2026-09-21: ≈ 39 µg/m³ (estimate)2026-09-22: ≈ 12 µg/m³ (estimate)09-222026-09-23: ≈ 8 µg/m³ (estimate)2026-09-24: ≈ 8 µg/m³ (estimate)2026-09-25: ≈ 11 µg/m³ (estimate)2026-09-26: ≈ 9 µg/m³ (estimate)2026-09-27: ≈ 15 µg/m³ (estimate)2026-09-28: ≈ 8 µg/m³ (estimate)2026-09-29: ≈ 22 µg/m³ (estimate)09-292026-09-30: ≈ 7 µg/m³ (estimate)

Daily means, UTC days. Dashed line: WHO 24-hour guideline (15 µg/m³).

Measured cities nearby

CityDistance7-day average
Silao de la Victoria12 km–
Irapuato28 km9.9 µg/m³
Guanajuato31 km5.9 µg/m³
León de los Aldama33 km10.6 µg/m³
Abasolo47 km6.2 µg/m³
Salamanca47 km11.0 µg/m³

Estimates contain modified Copernicus Atmosphere Monitoring Service information 2026. How estimates are made.