SmogRank / Milan / San Pietro Vernotico
Milan vs San Pietro Vernotico: PM2.5 compared
Over the last year, San Pietro Vernotico's air was about 2.8× as polluted as Milan's: PM2.5 averaged 37.2 µg/m³ against 13.2, on the 73 days both cities were measured. San Pietro Vernotico had the dirtier air on 30 of those days, Milan on 43. San Pietro Vernotico was over the WHO's daily guideline of 15 µg/m³ on 18 of them, Milan on 15.
Right now
The last year, day by day
Month by month
Year by year
| Year | Milan | San Pietro Vernotico | Days Milan was worse |
|---|---|---|---|
| 2026 so far | 54 | 59 | 39 |
| 2025 | 57 | 76 | 118 |
| 2024 | 64 | 63 | 73 |
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
- 9 Oct 2025136
- 14 Oct 2025110
- 23 Oct 202598
San Pietro Vernotico
- 21 Oct 2025500+
- 20 Oct 2025500+
- 19 Oct 2025500+
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.
San Pietro Vernotico
Side by side with Torchiarolo, Gujranwala.
Use this page
SmogRank, PM2.5 daily means compared, Milan and San Pietro Vernotico, 8 Oct 2025 – 26 Sep 2026, smogrank.com/compare/it-milan/it-san-pietro-vernotico (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.