Cambria vs Mecca: PM2.5 compared
Over the last year, Mecca's air was 9% more polluted than Cambria's: PM2.5 averaged 12.0 µg/m³ against 11.0, on the 30 days both cities were measured. Mecca had the dirtier air on 17 of those days, Cambria on 13. Mecca was over the WHO's daily guideline of 15 µg/m³ on 11 of them, Cambria on 3.
Right now
The last year, day by day
Month by month
Each city's worst days
Cambria
- 10 Sept 20268024.6 µg/m³
- 2 Sept 20266818.0 µg/m³
- 11 Sept 20266215.1 µg/m³
Mecca
- 1 Oct 20268225.9 µg/m³
- 23 Sept 20267421.2 µg/m³
- 24 Sept 20267220.2 µg/m³
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
Cambria
Side by side with Morro Bay (the nearest), Gujranwala (the world's worst on 30 days).
Mecca
Side by side with Indio (the nearest), Hanford (United States's 2nd worst on 30 days), Gujranwala (the world's worst on 30 days).
Use this page
SmogRank, PM2.5 daily means compared, Cambria and Mecca, 7 Oct 2025 – 6 Oct 2026, smogrank.com/compare/us-cambria/us-mecca (accessed 7 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 2026-10-07 08:07 UTC. Values are PM2.5 (fine particles), the median of each city's monitors, as the US AQI PM2.5 sub-index.