SmogRank / Milan / Santa Maria A Vico

Milan vs Santa Maria A Vico: PM2.5 compared

Over the last year, Milan's air was 6% more polluted than Santa Maria A Vico's: PM2.5 averaged 12.5 µg/m³ against 11.8, on the 112 days both cities were measured. Milan had the dirtier air on 50 of those days, Santa Maria A Vico on 62. Milan was over the WHO's daily guideline of 15 µg/m³ on 26 of them, Santa Maria A Vico on 26.

Right now

Milan–not on the 24-hour board right now
Santa Maria A Vico–not on the 24-hour board right now

The last year, day by day

Milan
Santa Maria A Vico
Each city's daily mean from 6 Oct 2025 to 5 Oct 2026, one stripe a day, coloured by band. A blank stripe is a day without a daily mean.

Month by month

15Nov 2025DecJan 2026FebMarMilan, Apr: 13.2 µg/m³Santa Maria A Vico, Apr: 12.4 µg/m³AprMilan, May: 9.0 µg/m³Santa Maria A Vico, May: 8.8 µg/m³MayMilan, Jun: 9.8 µg/m³Santa Maria A Vico, Jun: 11.5 µg/m³JunMilan, Jul: 11.5 µg/m³Santa Maria A Vico, Jul: 12.6 µg/m³JulMilan, Aug: 12.2 µg/m³Santa Maria A Vico, Aug: 15.5 µg/m³AugMilan, Sep: 13.2 µg/m³Santa Maria A Vico, Sep: 10.3 µg/m³SepOct
Monthly means in µg/m³ over the days both cities were measured. Solid: Milan. Faded: Santa Maria A Vico. A month shows once both share 10 such days. Dashed line: the WHO daily guideline.

Each city's worst days

Milan

Santa Maria A Vico

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.

Santa Maria A Vico

Side by side with Marigliano, Gujranwala.

Use this page

SmogRank, PM2.5 daily means compared, Milan and Santa Maria A Vico, 21 Oct 2025 – 4 Oct 2026, smogrank.com/compare/it-milan/it-santa-maria-a-vico (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 21:07 UTC. Values are PM2.5 (fine particles), the median of each city's monitors, as the US AQI PM2.5 sub-index.