SmogRank / Alessandria / Milan

Alessandria vs Milan: PM2.5 compared

Over the last year, Alessandria and Milan had about the same air: PM2.5 averaged 14.2 and 14.5 µg/m³, on the 83 days both cities were measured. Alessandria had the dirtier air on 41 of those days, Milan on 42. Alessandria was over the WHO's daily guideline of 15 µg/m³ on 25 of them, Milan on 24.

Right now

Alessandria–not on the 24-hour board right now
Milan–not on the 24-hour board right now

The last year, day by day

Alessandria
Milan
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 2026FebMarAlessandria, Apr: 14.7 µg/m³Milan, Apr: 14.0 µg/m³AprMayAlessandria, Jun: 11.9 µg/m³Milan, Jun: 10.6 µg/m³JunJulAlessandria, Aug: 10.8 µg/m³Milan, Aug: 11.0 µg/m³AugAlessandria, Sep: 12.8 µg/m³Milan, Sep: 13.4 µg/m³SepOct
Monthly means in µg/m³ over the days both cities were measured. Solid: Alessandria. Faded: Milan. A month shows once both share 10 such days. Dashed line: the WHO daily guideline.

Year by year

YearAlessandriaMilanDays both measuredDays Alessandria was worse
2026 so far60608040
202555579249
202465618159

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

Alessandria

Milan

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

Alessandria

Side by side with Sannazzaro de' Burgondi, Gujranwala.

Milan

Side by side with Monza, Vinovo, Gujranwala.

Use this page

SmogRank, PM2.5 daily means compared, Alessandria and Milan, 14 Oct 2025 – 4 Oct 2026, smogrank.com/compare/it-alessandria/it-milan (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.