SmogRank / Italy / Trentino-Alto Adige / Trento
Trento, month by month
Trento has a measured daily mean on 816 days since 4 January 2023. Its worst month was February 2024, at 77 US AQI (23.1 µg/m³), 159th of 2,486 cities on that month's world ranking. Its cleanest was May 2025, at 43 US AQI (7.8 µg/m³).
Every month since 2023
The US EPA's Air Quality Index for PM2.5 (2024 breakpoints). Show values as: µg/m³ · US AQI · India AQI · China AQI · European AQI · UK DAQI · Canada AQHI+. About the scales
Months without a mean, and why
21 months
| Month | Why |
|---|---|
| Mar 2026 | 3 of 31 days measured; a month needs 22. The others: 28 with under 18 hours of readings or readings that failed our checks. |
| Feb 2026 | No day measured. The others: 28 with under 18 hours of readings or readings that failed our checks. |
| Jan 2026 | 3 of 31 days measured; a month needs 22. The others: 28 with under 18 hours of readings or readings that failed our checks. |
| Dec 2025 | No day measured. The others: 31 with under 18 hours of readings or readings that failed our checks. |
| Nov 2025 | No day measured. The others: 30 with under 18 hours of readings or readings that failed our checks. |
| Oct 2025 | 13 of 31 days measured; a month needs 22. The others: 18 with under 18 hours of readings or readings that failed our checks. |
| Mar 2025 | 2 of 31 days measured; a month needs 22. The others: 29 with under 18 hours of readings or readings that failed our checks. |
| Feb 2025 | No day measured. The others: 28 with under 18 hours of readings or readings that failed our checks. |
| Jan 2025 | No day measured. The others: 31 with under 18 hours of readings or readings that failed our checks. |
| Dec 2024 | No day measured. The others: 31 with under 18 hours of readings or readings that failed our checks. |
| Nov 2024 | No day measured. The others: 30 with under 18 hours of readings or readings that failed our checks. |
| Oct 2024 | 8 of 31 days measured; a month needs 22. The others: 23 with under 18 hours of readings or readings that failed our checks. |
| Sep 2024 | No day measured. The others: 30 with under 18 hours of readings or readings that failed our checks. |
| Aug 2024 | 15 of 31 days measured; a month needs 22. The others: 16 with under 18 hours of readings or readings that failed our checks. |
| Jun 2024 | 17 of 30 days measured; a month needs 21. The others: 13 with under 18 hours of readings or readings that failed our checks. |
| Mar 2024 | 13 of 31 days measured; a month needs 22. The others: 18 with under 18 hours of readings or readings that failed our checks. |
| Aug 2023 | 17 of 31 days measured; a month needs 22. The others: 14 with under 18 hours of readings or readings that failed our checks. |
| Jul 2023 | 18 of 31 days measured; a month needs 22. The others: 1 missing from OpenAQ's archive, 12 with under 18 hours of readings or readings that failed our checks. |
| Mar 2023 | 11 of 31 days measured; a month needs 22. The others: 20 missing from OpenAQ's archive. |
| Feb 2023 | 2 of 28 days measured; a month needs 20. The others: 25 missing from OpenAQ's archive, 1 with under 18 hours of readings or readings that failed our checks. |
| Jan 2023 | 19 of 31 days measured; a month needs 22. The others: 7 missing from OpenAQ's archive, 2 with under 18 hours of readings or readings that failed our checks. |
A day counts once 18 hours of it are measured; a month needs 70% of its days.
Trento's worst months
| Month | US AQI | World rank | Episode |
|---|---|---|---|
| February 2024 | 7723.1 µg/m³ | 159thof 2,486 | Italy, Switzerland and France, February 2024 Southern Europe, February 2024 |
| December 2023 | 6818.2 µg/m³ | 195thof 2,247 | – |
| January 2024 | 6516.4 µg/m³ | 390thof 2,385 | – |
| June 2025 | 6416.3 µg/m³ | 354thof 2,508 | Italy, France and 2 more countries, June 2025 Europe, June 2025 |
| June 2026 | 6215.0 µg/m³ | 349thof 2,497 | – |
| August 2025 | 6214.8 µg/m³ | 373rdof 2,901 | – |
Monthly means over the days measured; finished months only. World rank: its place on that month's world ranking of every city with enough days. Each month opens that ranking.
Trento's worst days
| Day | US AQI | Episode |
|---|---|---|
| 6 Feb 2024 | 16372.6 µg/m³ | Southern Europe, February 2024 |
| 8 Feb 2024 | 15662.1 µg/m³ | Southern Europe, February 2024 |
| 7 Feb 2024 | 15358.3 µg/m³ | Southern Europe, February 2024 |
| 19 Feb 2024 | 15055.3 µg/m³ | Italy, Switzerland and France, February 2024 |
| 23 Aug 2025 | 14954.8 µg/m³ | – |
| 5 Feb 2024 | 13047.2 µg/m³ | Southern Europe, February 2024 |
| 27 May 2026 | 11239.8 µg/m³ | – |
| 9 Feb 2024 | 11139.4 µg/m³ | Southern Europe, February 2024 |
| 29 May 2026 | 10838.4 µg/m³ | – |
| 28 May 2026 | 9834.3 µg/m³ | – |
Daily means, the highest since 4 Jan 2023; the WHO's daily guideline is 15 µg/m³. Each date opens that day's world ranking, and each episode the bad-air spell it was part of.
Use this history
SmogRank, PM2.5 monthly and daily means, Trento, Italy, 4 Jan 2023 – 11 Oct 2026. Monitor data from EEA, via OpenAQ and from the publisher directly; sources listed at smogrank.com/sources. smogrank.com/it/trento/history (accessed 12 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.
Trento now: the last 24 hours, its ranks today and the last 12 months day by day.
Updated 2026-10-12 21:07 UTC. Values are PM2.5 (fine particles), the median of each city's monitors, as the US AQI PM2.5 sub-index. Some low-cost readings: Sensor.Community, ODbL (data and licence). Some readings: Uzhydromet (Uzbekistan's Hydrometeorological Service); Department of Environment, Nepal; Vietnam's government monitors; Aurassure; Umhverfisstofnun (Environment Agency of Iceland); RMCAB (Secretaría Distrital de Ambiente, Bogotá); Love My Air (City and County of Denver), no reuse terms published (why we use them).