Milan vs Salerno: PM2.5 compared
Over the last year, Milan's air was 25% more polluted than Salerno's: PM2.5 averaged 12.0 µg/m³ against 9.6, on the 116 days both cities were measured. Milan had the dirtier air on 81 of those days, Salerno on 32. Milan was over the WHO's daily guideline of 15 µg/m³ on 25 of them, Salerno on 5.
Right now
The last year, day by day
Month by month
Year by year
| Year | Milan | Salerno | Days Milan was worse |
|---|---|---|---|
| 2026 so far | 56 | 52 | 78 |
| 2024 | 66 | 56 | 53 |
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
Milan
Salerno
Daily means in US AQI, over the days both cities were measured in the last year. Each date opens that day's world board.
Compare either city with another
Milan
Side by side with Monza, Vinovo, Gujranwala.
Salerno
Side by side with Cava Dè Tirreni, Gujranwala.
Use this page
SmogRank, PM2.5 daily means compared, Milan and Salerno, 21 Oct 2025 – 4 Oct 2026, smogrank.com/compare/it-milan/it-salerno (accessed 6 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 2026-10-06 20:07 UTC. Values are PM2.5 (fine particles), the median of each city's monitors, as the US AQI PM2.5 sub-index.