SmogRank / Episodes / France

Auvergne-Rhône-Alpes, France, November 2024

For 2 days, from 16 to 17 November 2024, 8 cities in France had PM2.5 at least twice their usual for the time of year. The worst reading was Meyzieu, Auvergne-Rhône-Alpes, France: 36.2 µg/m³ on 17 November, about 5.2× its usual 6.9.

No cause namedWe have no fire or smoke records for these days, so we only say what the measurements show.
Cities reached8in 1 country
Days216 to 17 November 2024
Worst day16 November8 cities counted
Furthest above usual5.2×Meyzieu

Day by day

16 November 8 cities at twice their usual or more
GrenobleMeylanValenceChambéryManosqueAlbertvilleSalon-de-ProvenceAix-en-ProvenceSaint-ÉtienneBourg-en-BresseMarignaneAnnemasseMarseilleNîmesCannesLunelNiceMonacoMontpellierMentonDoleVichyClermont-FerrandBernMoulinsRodezAurillacMontluçonPerpignanLuganoCastresBellinzonaBourgesMontaubanToulouseBastiaChâteaurouxLimogesles EscaldesPérigueuxSallanchesRomans-sur-IsèreAvignonVillefranche-sur-SaôneVillefontaineLyonArlesMeyzieu
13 Nov14151617181920
Every measured city in the area, coloured by its PM2.5 that day; a dark ring marks a city at twice its usual or more. Bars: cities counted each day, coloured by their median level. Choose a day or press play; without JavaScript, the days link to that day's world ranking.

How it spread

Romans-sur-IsèreRomans-sur-Isère, 13 November: 18.8 µg/m³, 2.0× usualRomans-sur-Isère, 14 November: 18.8 µg/m³, 2.0× usualRomans-sur-Isère, 15 November: 26.9 µg/m³, 2.8× usualRomans-sur-Isère, 16 November: 26.0 µg/m³, 2.7× usualRomans-sur-Isère, 17 November: 22.0 µg/m³, 2.3× usualRomans-sur-Isère, 18 November: 8.7 µg/m³, 0.9× usualRomans-sur-Isère, 19 November: 13.8 µg/m³, 1.4× usualRomans-sur-Isère, 20 November: 4.8 µg/m³, 0.5× usualArlesArles, 13 November: 14.2 µg/m³, 2.0× usualArles, 14 November: 12.8 µg/m³, 1.8× usualArles, 15 November: 17.6 µg/m³, 2.4× usualArles, 16 November: 34.1 µg/m³, 4.7× usualArles, 17 November: 22.5 µg/m³, 3.1× usualArles, 18 November: 7.7 µg/m³, 1.1× usualArles, 19 November: 8.1 µg/m³, 1.1× usualArles, 20 November: 4.9 µg/m³, 0.7× usualMeyzieuMeyzieu, 13 November: no readingMeyzieu, 14 November: no readingMeyzieu, 15 November: 16.6 µg/m³, 2.4× usualMeyzieu, 16 November: 29.3 µg/m³, 4.2× usualMeyzieu, 17 November: 36.2 µg/m³, 5.2× usualMeyzieu, 18 November: 17.9 µg/m³, 2.6× usualMeyzieu, 19 November: 10.5 µg/m³, 1.5× usualMeyzieu, 20 November: 5.8 µg/m³, 0.8× usualVillefranche-sur-Sa…Villefranche-sur-Saône, 13 November: 13.6 µg/m³, 1.6× usualVillefranche-sur-Saône, 14 November: 9.5 µg/m³, 1.1× usualVillefranche-sur-Saône, 15 November: 12.7 µg/m³, 1.5× usualVillefranche-sur-Saône, 16 November: 28.8 µg/m³, 3.4× usualVillefranche-sur-Saône, 17 November: 28.3 µg/m³, 3.3× usualVillefranche-sur-Saône, 18 November: 22.7 µg/m³, 2.7× usualVillefranche-sur-Saône, 19 November: 11.8 µg/m³, 1.4× usualVillefranche-sur-Saône, 20 November: 3.9 µg/m³, 0.5× usualLyonLyon, 13 November: 14.8 µg/m³, 1.9× usualLyon, 14 November: 16.0 µg/m³, 2.1× usualLyon, 15 November: 14.7 µg/m³, 1.9× usualLyon, 16 November: 28.2 µg/m³, 3.7× usualLyon, 17 November: 33.9 µg/m³, 4.5× usualLyon, 18 November: 20.1 µg/m³, 2.6× usualLyon, 19 November: 12.7 µg/m³, 1.7× usualLyon, 20 November: 3.5 µg/m³, 0.5× usualSallanchesSallanches, 13 November: 12.2 µg/m³, 0.9× usualSallanches, 14 November: 17.5 µg/m³, 1.3× usualSallanches, 15 November: 24.4 µg/m³, 1.8× usualSallanches, 16 November: 27.1 µg/m³, 2.1× usualSallanches, 17 November: 30.7 µg/m³, 2.3× usualSallanches, 18 November: 28.1 µg/m³, 2.1× usualSallanches, 19 November: 19.8 µg/m³, 1.5× usualSallanches, 20 November: 9.4 µg/m³, 0.7× usualAvignonAvignon, 13 November: 12.1 µg/m³, 1.5× usualAvignon, 14 November: 11.9 µg/m³, 1.5× usualAvignon, 15 November: 12.9 µg/m³, 1.6× usualAvignon, 16 November: 26.5 µg/m³, 3.2× usualAvignon, 17 November: 21.5 µg/m³, 2.6× usualAvignon, 18 November: 5.0 µg/m³, 0.6× usualAvignon, 19 November: 7.6 µg/m³, 0.9× usualAvignon, 20 November: 3.4 µg/m³, 0.4× usualVillefontaineVillefontaine, 13 November: 16.7 µg/m³, 2.1× usualVillefontaine, 14 November: 17.7 µg/m³, 2.3× usualVillefontaine, 15 November: 21.7 µg/m³, 2.8× usualVillefontaine, 16 November: 25.4 µg/m³, 3.3× usualVillefontaine, 17 November: 27.3 µg/m³, 3.5× usualVillefontaine, 18 November: 15.1 µg/m³, 1.9× usualVillefontaine, 19 November: 11.8 µg/m³, 1.5× usualVillefontaine, 20 November: 4.5 µg/m³, 0.6× usual13 Nov14151617181920
Every counted city, in the order the episode reached them, 3 days before to 3 after. Each square is a day, coloured by that day's PM2.5; outlined: at twice the city's usual or more.
Good0–50
Moderate51–100
Sensitive groups101–150
Unhealthy151–200
Very unhealthy201–300
Hazardous301+

Every city it reached

CityDaysHighestUsualAbove usual
MeyzieuAuvergne-Rhône-Alpes, France2 36.217 November6.95.2×
ArlesProvence-Alpes-Côte d'Azur, France1 34.116 November7.24.7×
LyonAuvergne-Rhône-Alpes, France2 33.917 November7.64.5×
VillefontaineAuvergne-Rhône-Alpes, France2 27.317 November7.83.5×
Villefranche-sur-SaôneAuvergne-Rhône-Alpes, France2 28.816 November8.53.4×
AvignonProvence-Alpes-Côte d'Azur, France1 26.516 November8.23.2×
Romans-sur-IsèreAuvergne-Rhône-Alpes, France1 26.915 November9.62.8×
SallanchesAuvergne-Rhône-Alpes, France2 30.717 November13.22.3×

Daily means in µg/m³. Usual: the city's median for this time of year (its days within 21 days of the date, every year, leaving out the week around it). Above usual: its highest day against that.

Against other episodes in France

Number 24 of 27 episodes in France since our records began, by cities reached.

Bars: cities reached; colour: the level of the episode's highest daily reading. All 27.

Use this page

SmogRank, Auvergne-Rhône-Alpes, France, November 2024: 8 cities with PM2.5 at twice their usual or more, 16 to 17 November 2024, smogrank.com/episodes/2024-11-auvergne-rhone-alpes-france (accessed 3 October 2026).

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You're welcome to reuse a single chart, image or figure with this citation and a link. Terms.

An episode is a run of days when many cities close to each other (four or more within 350 km on a day, 8 or more in all) each had a daily PM2.5 mean of at least 25 µg/m³ and at least 2 times their usual for that time of year. Found in our own measurements, not picked by hand. How we find episodes. Values are each city's daily mean of its own monitors; causes are the usual kinds for a pattern like this, not a confirmed source.