SmogRank / Avellino / Milan

Avellino vs Milan: PM2.5 compared

Over the last year, Milan's air was about 2.1× as polluted as Avellino's: PM2.5 averaged 12.5 µg/m³ against 6.0, on the 112 days both cities were measured. Milan had the dirtier air on 105 of those days, Avellino on 7. Milan was over the WHO's daily guideline of 15 µg/m³ on 26 of them, Avellino on 1.

Right now

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

The last year, day by day

Avellino
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 2026FebMarAvellino, Apr: 5.8 µg/m³Milan, Apr: 13.2 µg/m³AprAvellino, May: 3.8 µg/m³Milan, May: 8.9 µg/m³MayAvellino, Jun: 4.6 µg/m³Milan, Jun: 10.0 µg/m³JunAvellino, Jul: 7.1 µg/m³Milan, Jul: 11.5 µg/m³JulAvellino, Aug: 9.3 µg/m³Milan, Aug: 11.9 µg/m³AugAvellino, Sep: 6.0 µg/m³Milan, Sep: 13.3 µg/m³SepOct
Monthly means in µg/m³ over the days both cities were measured. Solid: Avellino. Faded: Milan. A month shows once both share 10 such days. Dashed line: the WHO daily guideline.

Each city's worst days

Avellino

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

Avellino

Side by side with Solofra, Gujranwala.

Milan

Side by side with Monza, Vinovo, Gujranwala.

Use this page

SmogRank, PM2.5 daily means compared, Avellino and Milan, 21 Oct 2025 – 4 Oct 2026, smogrank.com/compare/it-avellino/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 20:07 UTC. Values are PM2.5 (fine particles), the median of each city's monitors, as the US AQI PM2.5 sub-index.