SmogRank / France / Auvergne-Rhône-Alpes / Villefranche-sur-Saône

Villefranche-sur-Saône, month by month

Villefranche-sur-Saône has a measured daily mean on 710 days since 11 January 2023. Its worst month was February 2023, at 76 US AQI (22.7 µg/m³), 77th of 1,129 cities on that month's world ranking. Its cleanest was September 2025, at 26 US AQI (4.6 µg/m³).

Every month since 2023

202643 so far238 days measured1,913th of 2,798 in the world
Jan18 daysFeb49#1,730Mar56#1,296Apr33#2,241May32#2,069Jun16 daysJul42#1,988Aug39#2,047Sep27#2,403Oct34#1,689
202549 for the year271 days measured1,398th of 2,681 in the world
Jan21 daysFeb70#629Mar50#1,776Apr32#2,364May18 daysJun14 daysJul31#2,486Aug19 daysSep26#2,768Oct19 daysNov44#1,544Dec63#703
2024too few days for a mean (a year needs 257)149 days measured
Jan3 daysFeb53#661Mar10 daysApr2 daysMaynoneJun2 daysJul33#1,972Aug15 daysSepnoneOct13 daysNov58#506Dec62#473
2023too few days for a mean (a year needs 256)52 days measured
Jan5 daysFeb76#77Mar20 daysApr3 daysMaynoneJunnoneJul1 dayAugnoneSepnoneOctnoneNovnoneDecnone
Each square is a month's mean PM2.5 in US AQI from Villefranche-sur-Saône'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 Villefranche-sur-Saône marked; each year, the year's. A dashed square is the running month, so far.
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

26 months
MonthWhy
Jun 202616 of 30 days measured; a month needs 21. The others: 14 with under 18 hours of readings or readings that failed our checks.
Jan 202618 of 31 days measured; a month needs 22. The others: 13 with under 18 hours of readings or readings that failed our checks.
Oct 202519 of 31 days measured; a month needs 22. The others: 12 with under 18 hours of readings or readings that failed our checks.
Aug 202519 of 31 days measured; a month needs 22. The others: 12 with under 18 hours of readings or readings that failed our checks.
Jun 202514 of 30 days measured; a month needs 21. The others: 16 with under 18 hours of readings or readings that failed our checks.
May 202518 of 31 days measured; a month needs 22. The others: 13 with under 18 hours of readings or readings that failed our checks.
Jan 202521 of 31 days measured; a month needs 22. The others: 10 with under 18 hours of readings or readings that failed our checks.
Oct 202413 of 31 days measured; a month needs 22. The others: 18 with under 18 hours of readings or readings that failed our checks.
Sep 2024No day measured. The others: 30 with under 18 hours of readings or readings that failed our checks.
Aug 202415 of 31 days measured; a month needs 22. The others: 16 with under 18 hours of readings or readings that failed our checks.
Jun 20242 of 30 days measured; a month needs 21. The others: 28 with under 18 hours of readings or readings that failed our checks.
May 2024No day measured. The others: 31 with under 18 hours of readings or readings that failed our checks.
Apr 20242 of 30 days measured; a month needs 21. The others: 28 with under 18 hours of readings or readings that failed our checks.
Mar 202410 of 31 days measured; a month needs 22. The others: 21 with under 18 hours of readings or readings that failed our checks.
Jan 20243 of 31 days measured; a month needs 22. The others: 28 with under 18 hours of readings or readings that failed our checks.
Dec 2023No day measured. The others: 31 with under 18 hours of readings or readings that failed our checks.
Nov 2023No day measured. The others: 30 with under 18 hours of readings or readings that failed our checks.
Oct 2023No day measured. The others: 31 with under 18 hours of readings or readings that failed our checks.
Sep 2023No day measured. The others: 30 with under 18 hours of readings or readings that failed our checks.
Aug 2023No day measured. The others: 31 with under 18 hours of readings or readings that failed our checks.
Jul 20231 of 31 days measured; a month needs 22. The others: 30 with under 18 hours of readings or readings that failed our checks.
Jun 2023No day measured. The others: 30 with under 18 hours of readings or readings that failed our checks.
May 2023No day measured. The others: 31 with under 18 hours of readings or readings that failed our checks.
Apr 20233 of 30 days measured; a month needs 21. The others: 27 with under 18 hours of readings or readings that failed our checks.
Mar 202320 of 31 days measured; a month needs 22. The others: 11 with under 18 hours of readings or readings that failed our checks.
Jan 20235 of 31 days measured; a month needs 22. The others: 2 missing from OpenAQ's archive, 14 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.

Villefranche-sur-Saône's worst months

MonthUS AQIDays measuredWorld rankEpisode
February 2023 7622.7 µg/m³23 of 2877thof 1,129Europe, 28 February to 4 March 2023
Europe, 6 to 25 February 2023and 1 more
February 2025 7019.1 µg/m³22 of 28629thof 2,633Europe, 14 February to 1 March 2025
December 2025 6315.5 µg/m³27 of 31703rdof 3,006–
December 2024 6215.0 µg/m³22 of 31473rdof 2,616Europe, 24 December 2024 to 3 January 2025
Europe, 12 to 14 December 2024
November 2024 5813.1 µg/m³27 of 30506thof 2,624Auvergne-Rhône-Alpes and Provence-Alpes-Côte d'Azur, France, November 2024
March 2026 5611.6 µg/m³27 of 311,296thof 2,971–

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.

Villefranche-sur-Saône's worst days

DayUS AQIEpisode
13 Feb 2023 14854.5 µg/m³Europe, 6 to 25 February 2023
12 Feb 2023 13649.6 µg/m³Europe, 6 to 25 February 2023
18 Feb 2025 13348.4 µg/m³Europe, 14 February to 1 March 2025
20 Jan 2025 13248.0 µg/m³Germany, France and 19 more countries, January 2025
11 Feb 2023 13147.8 µg/m³Europe, 6 to 25 February 2023
3 Mar 2023 11240.0 µg/m³Europe, 28 February to 4 March 2023
4 Mar 2023 11240.0 µg/m³Europe, 4 to 7 March 2023
Europe, 28 February to 4 March 2023
10 Feb 2023 11039.0 µg/m³Europe, 6 to 25 February 2023
17 Feb 2025 10938.8 µg/m³Europe, 14 February to 1 March 2025
21 Jan 2025 10537.1 µg/m³Germany, France and 19 more countries, January 2025

Daily means, the highest since 11 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, Villefranche-sur-Saône, France, 11 Jan 2023 – 12 Oct 2026. Monitor data from EEA, via OpenAQ and from the publisher directly; sources listed at smogrank.com/sources. smogrank.com/fr/villefranche-sur-saone/history (accessed 13 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.

Villefranche-sur-Saône now: the last 24 hours, its ranks today and the last 12 months day by day.

Updated 2026-10-13 02:07 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).