SmogRank / Italy / Piedmont / Crescentino

Crescentino, month by month

Crescentino has a measured daily mean on 665 days since 3 January 2023. Its worst month was January 2024, at 100 US AQI (35.3 µg/m³), 90th of 2,385 cities on that month's world ranking. Its cleanest was May 2024, at 52 US AQI (9.4 µg/m³).

Every month since 2023

2026too few days for a mean (a year needs 200)150 days measured
Jan4 daysFebnoneMar2 daysApr19 daysMay55#637Jun20 daysJul57#811Aug58#504Sep20 daysOct6 days
2025too few days for a mean (a year needs 256)125 days measured
JannoneFebnoneMarnoneApr56#763May15 daysJun13 daysJul55#993Aug62#373Sep56#490Oct1 dayNovnoneDecnone
2024too few days for a mean (a year needs 257)129 days measured
Jan100#90Feb87#115Mar11 daysApr53#990May52#877Jun2 daysJulnoneAugnoneSepnoneOctnoneNovnoneDecnone
202367 for the year261 days measured92nd of 1,355 in the world
Jan20 daysFeb2 daysMar11 daysApr58#220May55#346Jun61#411Jul17 daysAug16 daysSep60#219Oct68#80Nov71#75Dec87#72
Each square is a month's mean PM2.5 in US AQI from Crescentino's measured days, with its place on that month's world ranking under it. A month has a mean once 70% of its days are measured, the rule the monthly rankings use; under that, the square gives the days measured. Each square opens that month's ranking with Crescentino marked; each year, the year's.
Good0–50
Moderate51–100
Sensitive groups101–150
Unhealthy151–200
Very unhealthy201–300
Hazardous301+

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

28 months
MonthWhy
Oct 20266 of 12 days measured; a month needs 9. The others: 2 with no readings from the monitor, 2 with readings for part of the day (a day needs 18 hours), 2 with under 18 hours of readings or readings that failed our checks.
Sep 202620 of 30 days measured; a month needs 21. The others: 1 with no readings from the monitor, 9 with readings for part of the day (a day needs 18 hours).
Jun 202620 of 30 days measured; a month needs 21. The others: 10 with readings for part of the day (a day needs 18 hours).
Apr 202619 of 30 days measured; a month needs 21. The others: 1 with no readings from the monitor, 10 with readings for part of the day (a day needs 18 hours).
Mar 20262 of 31 days measured; a month needs 22. The others: 29 with readings for part of the day (a day needs 18 hours).
Feb 2026No day measured. The others: 5 with no readings from the monitor, 23 with readings for part of the day (a day needs 18 hours).
Jan 20264 of 31 days measured; a month needs 22. The others: 27 with readings for part of the day (a day needs 18 hours).
Dec 2025No day measured. The others: 1 with no readings from the monitor, 30 with readings for part of the day (a day needs 18 hours).
Nov 2025No day measured. The others: 2 with no readings from the monitor, 28 with readings for part of the day (a day needs 18 hours).
Oct 20251 of 31 days measured; a month needs 22. The others: 6 with no readings from the monitor, 24 with readings for part of the day (a day needs 18 hours).
Jun 202513 of 30 days measured; a month needs 21. The others: 6 with no readings from the monitor, 11 with readings for part of the day (a day needs 18 hours).
May 202515 of 31 days measured; a month needs 22. The others: 3 with no readings from the monitor, 13 with readings for part of the day (a day needs 18 hours).
Mar 2025No day measured. The others: 4 with no readings from the monitor, 27 with readings for part of the day (a day needs 18 hours).
Feb 2025No day measured. The others: 3 with no readings from the monitor, 25 with readings for part of the day (a day needs 18 hours).
Jan 2025No day measured. The others: 6 with no readings from the monitor, 25 with readings for part of the day (a day needs 18 hours).
Dec 2024No day measured. The others: 31 with readings for part of the day (a day needs 18 hours).
Nov 2024No day measured. The others: 5 with no readings from the monitor, 25 with readings for part of the day (a day needs 18 hours).
Oct 2024No day measured. The others: 1 with no readings from the monitor, 30 with readings for part of the day (a day needs 18 hours).
Sep 2024No day measured. The others: 6 with no readings from the monitor, 24 with readings for part of the day (a day needs 18 hours).
Aug 2024No day measured. The others: 6 with no readings from the monitor, 25 with readings for part of the day (a day needs 18 hours).
Jul 2024No day measured. The others: 31 with readings for part of the day (a day needs 18 hours).
Jun 20242 of 30 days measured; a month needs 21. The others: 17 with no readings from the monitor, 11 with readings for part of the day (a day needs 18 hours).
Mar 202411 of 31 days measured; a month needs 22. The others: 10 with no readings from the monitor, 10 with readings for part of the day (a day needs 18 hours).
Aug 202316 of 31 days measured; a month needs 22. The others: 10 with no readings from the monitor, 5 with readings for part of the day (a day needs 18 hours).
Jul 202317 of 31 days measured; a month needs 22. The others: 9 with no readings from the monitor, 4 with readings for part of the day (a day needs 18 hours), 1 missing from OpenAQ's archive.
Mar 202311 of 31 days measured; a month needs 22. The others: 20 missing from OpenAQ's archive.
Feb 20232 of 28 days measured; a month needs 20. The others: 1 with readings for part of the day (a day needs 18 hours), 25 missing from OpenAQ's archive.
Jan 202320 of 31 days measured; a month needs 22. The others: 2 with readings for part of the day (a day needs 18 hours), 7 missing from OpenAQ's archive.

A day counts once 18 hours of it are measured; a month needs 70% of its days.

Crescentino's worst months

MonthUS AQIDays measuredWorld rankEpisode
January 2024 10035.3 µg/m³30 of 3190thof 2,385Italy, Switzerland and France, January 2024
February 2024 8728.6 µg/m³28 of 29115thof 2,486Italy, Switzerland and France, February 2024
December 2023 8728.3 µg/m³29 of 3172ndof 2,247–
November 2023 7119.7 µg/m³29 of 3075thof 2,243–
October 2023 6818.4 µg/m³30 of 3180thof 2,012–
August 2025 6214.8 µg/m³25 of 31373rdof 2,901Italy and Switzerland, August 2025

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.

Crescentino's worst days

DayUS AQIEpisode
26 Jan 2024 16169.1 µg/m³Italy, Switzerland and France, January 2024
25 Jan 2024 15764.1 µg/m³Italy, Switzerland and France, January 2024
18 Feb 2024 15459.7 µg/m³Italy, Switzerland and France, February 2024
19 Feb 2024 15459.3 µg/m³Italy, Switzerland and France, February 2024
31 Jan 2024 15256.8 µg/m³–
24 Jan 2024 14954.9 µg/m³Italy, Switzerland and France, January 2024
2 Feb 2024 14653.9 µg/m³–
31 Jan 2023 13950.8 µg/m³–
16 Jan 2024 13850.7 µg/m³–
14 Feb 2023 13850.6 µg/m³–

Daily means, the highest since 3 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, Crescentino, Italy, 3 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/crescentino/history (accessed 12 Oct 2026).

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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.

Crescentino 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).