SmogRank / Alessandria / Ancona
Alessandria vs Ancona: PM2.5 compared
Over the last year, Alessandria and Ancona had about the same air: PM2.5 averaged 13.3 and 13.9 µg/m³, on the 39 days both cities were measured. Alessandria had the dirtier air on 29 of those days, Ancona on 10. Alessandria was over the WHO's daily guideline of 15 µg/m³ on 10 of them, Ancona on 5.
Right now
The last year, day by day
Month by month
Year by year
| Year | Alessandria | Ancona | Days Alessandria was worse |
|---|---|---|---|
| 2026 so far | 59 | 60 | 29 |
| 2024 | 73 | 62 | 77 |
| 2023 | 72 | 62 | 132 |
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
- 2 Oct 20269030.2 µg/m³
- 6 Oct 20268527.6 µg/m³
- 30 Sept 20267923.9 µg/m³
Ancona
- 11 Aug 2026199124.0 µg/m³
- 12 Aug 202614553.3 µg/m³
- 29 Aug 20267924.1 µg/m³
Daily means in US AQI, with µg/m³ beside them, since the index stops at its top value, 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 (the nearest), Vinovo (Italy's 2nd worst on 30 days), Gujranwala (the world's worst on 30 days).
Ancona
Side by side with Teramo (the nearest), Gujranwala (the world's worst on 30 days).
Use this page
SmogRank, PM2.5 daily means compared, Alessandria and Ancona, 7 Oct 2025 – 6 Oct 2026, smogrank.com/compare/it-alessandria/it-ancona (accessed 7 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 2026-10-07 13:07 UTC. Values are PM2.5 (fine particles), the median of each city's monitors, as the US AQI PM2.5 sub-index.