SmogRank / Hacienda Santa Fe / Tijuana

Hacienda Santa Fe vs Tijuana: PM2.5 compared

Over the last year, Hacienda Santa Fe's air was 21% more polluted than Tijuana's: PM2.5 averaged 31.2 µg/m³ against 25.8, on the 309 days both cities were measured. Hacienda Santa Fe had the dirtier air on 216 of those days, Tijuana on 93. Hacienda Santa Fe was over the WHO's daily guideline of 15 µg/m³ on 301 of them, Tijuana on 223.

Right now

Hacienda Santa Fe–not on the 24-hour board right now
Tijuana#177on the 24-hour board of 2,351, at 71 US AQI (19.7 µg/m³)

The last year, day by day

Hacienda Santa Fe
Tijuana
Each city's daily mean from 9 Oct 2025 to 8 Oct 2026, one stripe a day, coloured by band. A blank stripe is a day without a daily mean.

Month by month

Hacienda Santa Fe, Nov 2025: 44.2 µg/m³Tijuana, Nov 2025: 30.8 µg/m³Nov2025Hacienda Santa Fe, Dec 2025: 44.0 µg/m³Tijuana, Dec 2025: 53.4 µg/m³DecHacienda Santa Fe, Jan 2026: 40.4 µg/m³Tijuana, Jan 2026: 31.8 µg/m³Jan2026Hacienda Santa Fe, Feb 2026: 33.1 µg/m³Tijuana, Feb 2026: 31.9 µg/m³FebHacienda Santa Fe, Mar 2026: 26.1 µg/m³Tijuana, Mar 2026: 21.6 µg/m³MarHacienda Santa Fe, Apr 2026: 24.4 µg/m³Tijuana, Apr 2026: 14.3 µg/m³AprHacienda Santa Fe, May 2026: 32.5 µg/m³Tijuana, May 2026: 14.7 µg/m³MayHacienda Santa Fe, Jun 2026: 25.1 µg/m³Tijuana, Jun 2026: 17.4 µg/m³JunHacienda Santa Fe, Jul 2026: 25.0 µg/m³Tijuana, Jul 2026: 16.4 µg/m³JulHacienda Santa Fe, Aug 2026: 26.2 µg/m³Tijuana, Aug 2026: 20.9 µg/m³AugHacienda Santa Fe, Sep 2026: 24.3 µg/m³Tijuana, Sep 2026: 22.5 µg/m³SepOct
Monthly means in µg/m³ over the days both cities were measured. Solid: Hacienda Santa Fe. Faded: Tijuana. A month shows once both share 10 such days. Dashed line: the WHO daily guideline, 15 µg/m³.

Year by year

YearHacienda Santa FeTijuanaDays both measuredDays Hacienda Santa Fe was worse
2026 so far8874230177
20259078208134

Means in US AQI over the days both cities were measured that year; a year shows once they share 30 such days.

Each city's worst days

Hacienda Santa Fe

Tijuana

Daily means in US AQI, with µg/m³ beside them, since the index stops at its top value, over the days both cities were measured in the last year. Each date opens that day's world board.

Compare either city with another

Hacienda Santa Fe

Side by side with Santa Anita (the nearest), Mexicali (Mexico's 2nd worst on 30 days), Gujranwala (the world's worst on 30 days).

Tijuana

Side by side with Imperial Beach (the nearest), Gujranwala (the world's worst on 30 days).

Use this page

SmogRank, PM2.5 daily means compared, Hacienda Santa Fe and Tijuana, 9 Oct 2025 – 8 Oct 2026, smogrank.com/compare/mx-hacienda-santa-fe/mx-tijuana (accessed 9 Oct 2026).

You're welcome to reuse a single chart, image or figure with this citation and a link. Terms. Raw monitor readings in bulk are published by OpenAQ, under each provider's licence.

The same rules as every SmogRank figure: reference monitors first, and a day counts with 18 measured hours. How we measure.

Updated 2026-10-09 07:07 UTC. Values are PM2.5 (fine particles), the median of each city's monitors, as the US AQI PM2.5 sub-index. Some readings: Uzhydromet (Uzbekistan's Hydrometeorological Service); Department of Environment, Nepal; Vietnam's government monitors; Aurassure; Umhverfisstofnun (Environment Agency of Iceland); Love My Air (City and County of Denver), no reuse terms published (why we use them).