Għarb vs Valletta: PM2.5 compared
Over the last year, Valletta's air was 36% more polluted than Għarb's: PM2.5 averaged 13.5 µg/m³ against 9.9, on the 222 days both cities were measured. Valletta had the dirtier air on 215 of those days, Għarb on 7. Valletta was over the WHO's daily guideline of 15 µg/m³ on 52 of them, Għarb on 25.
Right now
The last year, day by day
Month by month
Year by year
| Year | Għarb | Valletta | Days Għarb was worse |
|---|---|---|---|
| 2026 so far | 54 | 61 | 6 |
| 2025 | 45 | 54 | 9 |
| 2024 | 53 | 58 | 13 |
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
Għarb
- 13 Apr 202616879.9 µg/m³
- 14 Apr 202612846.4 µg/m³
- 5 Jan 202611742.0 µg/m³
Valletta
- 13 Apr 202616879.8 µg/m³
- 14 Apr 202616067.7 µg/m³
- 5 Jan 202611943.0 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
Għarb
Side by side with San Pawl il-Baħar (the nearest), Gujranwala (the world's worst on 30 days).
Valletta
Side by side with Żabbar (the nearest), Mosta (Malta's 2nd worst on 30 days), Gujranwala (the world's worst on 30 days).
Use this page
SmogRank, PM2.5 daily means compared, Għarb and Valletta, 11 Oct 2025 – 10 Oct 2026, smogrank.com/compare/mt-gharb/mt-valletta (accessed 11 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 2026-10-11 05:07 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); RMCAB (Secretaría Distrital de Ambiente, Bogotá); Love My Air (City and County of Denver), no reuse terms published (why we use them).