# Carbon monoxide poisonings with the return of cold weather in France > In late October 2026, the Pas-de-Calais prefecture then the Paris police prefecture remind of the risks of carbon monoxide poisoning with the drop in temperatures. On October 27, three people are poisoned in Thury-en-Valois in the Oise by a generator, then several cases are reported in early November in Samer, in the Val-d'Oise, Boulogne-sur-Mer, Montauban and Janville-sur-Juine. On November 6, firefighters warn about these poisonings, the leading cause of accidental toxic mortality in France. On November 11, a 56-year-old woman dies after relighting her boiler, while a woman is seriously poisoned in Blagnac and a man and a child are hospitalized in the Pas-de-Calais after a gas stove breakdown. **In brief**: Ongoing story bringing together 12 events in 7 departments (Pas-de-Calais, Oise, Haute-Garonne and 4 more), followed from 26 October 2026 to 12 November 2026. 15 articles from 9 sources (health); last updated on 12 November 2026 at 09:12. Reported toll: 100 deaths, 6 injured. - Status: ongoing - Category: Health - Place: Pas-de-Calais, Oise, Haute-Garonne, Paris, Tarn-et-Garonne, Essonne, Val-d'Oise - First detected: 26 October 2026 at 20:00 - Updated: 12 November 2026 at 09:12 - Web page: https://acturadar.com/en/stories/427-carbon-monoxide-poisonings-with-the-return-of-cold-weather-in-france ## Reported figures - 100 deaths - 6 injured ## Timeline (12 events) ### 26 October 2026 — [Pas-de-Calais reminds of carbon monoxide poisoning risks](https://acturadar.com/en/events/1346-pas-de-calais-reminds-of-carbon-monoxide-poisoning-risks.md) The Pas-de-Calais prefecture reminds that falling temperatures increase the risks of carbon monoxide poisoning, responsible for around 3,000 poisonings per year in France. 1 sources, 1 articles · Pas-de-Calais ### 27 October 2026 — [Paris police prefecture reminds of the risks of carbon monoxide poisoning](https://acturadar.com/en/events/1594-paris-police-prefecture-reminds-of-the-risks-of-carbon-monoxide-poisoning.md) With the arrival of cold weather, the police prefecture calls for checking the proper functioning of heating appliances. 1 sources, 1 articles · Paris ### 28 October 2026 — [Three people poisoned by carbon monoxide in the Oise](https://acturadar.com/en/events/2764-three-people-poisoned-by-carbon-monoxide-in-the-oise.md) In Thury-en-Valois, three people were poisoned by carbon monoxide on the evening of October 27, with a generator running in their home. Firefighters are calling for vigilance. 1 sources, 1 articles · Thury-en-Valois — Oise ### 4 November 2026 — [Samer: a family hospitalized after suspected carbon monoxide poisoning](https://acturadar.com/en/events/9555-samer-a-family-hospitalized-after-suspected-carbon-monoxide-poisoning.md) In Samer, in the Pas-de-Calais department, a family was transported to the hospital following a suspicion of carbon monoxide poisoning. 1 sources, 1 articles · Samer — Pas-de-Calais ### 5 November 2026 — [Val-d'Oise: four victims of carbon monoxide poisoning](https://acturadar.com/en/events/10825-val-d-oise-four-victims-of-carbon-monoxide-poisoning.md) Firefighters in Val-d'Oise intervened twice in recent days to assist four people poisoned by carbon monoxide. 1 sources, 1 articles · Val-d'Oise ### 6 November 2026 — [Return of cold weather: firefighters warn of carbon monoxide poisoning](https://acturadar.com/en/events/13014-return-of-cold-weather-firefighters-warn-of-carbon-monoxide-poisoning.md) With falling temperatures and heating appliances being switched back on, firefighters are reminding people of the dangers of carbon monoxide, the leading cause of accidental toxic mortality in France. 1 sources, 1 articles · Nationwide ### 8 November 2026 — [Trois septuagénaires intoxiqués au monoxyde de carbone à Boulogne](https://acturadar.com/en/events/13179-trois-septuagenaires-intoxiques-au-monoxyde-de-carbone-a-boulogne.md) Trois personnes âgées de plus de 70 ans ont été intoxiquées au monoxyde de carbone à Boulogne-sur-Mer, dans le Pas-de-Calais. 1 sources, 1 articles · Boulogne-sur-Mer — Pas-de-Calais ### 9 November 2026 — [Montauban : quatre personnes hospitalisées après une suspicion d'intoxication au monoxyde de carbone](https://acturadar.com/en/events/14314-montauban-quatre-personnes-hospitalisees-apres-une-suspicion-d-intoxication-au.md) Une suspicion d'intoxication au monoxyde de carbone a mobilisé les secours lundi 9 novembre dans une maison de Montauban, où quatre personnes ont été transportées à l'hôpital. 2 sources, 2 articles · Montauban — Tarn-et-Garonne ### 10 November 2026 — [Essonne : deux personnes intoxiquées au monoxyde de carbone à Janville-sur-Juine](https://acturadar.com/en/events/15425-essonne-deux-personnes-intoxiquees-au-monoxyde-de-carbone-a-janville-sur-juine.md) Un homme et une femme ont été intoxiqués au monoxyde de carbone dans la nuit de vendredi à samedi dans un pavillon de Janville-sur-Juine, en Essonne. 1 sources, 1 articles · Janville-sur-Juine — Essonne ### 11 November 2026 — [Une femme de 56 ans meurt intoxiquée au monoxyde de carbone après avoir rallumé sa chaudière](https://acturadar.com/en/events/16599-une-femme-de-56-ans-meurt-intoxiquee-au-monoxyde-de-carbone-apres-avoir-rallume.md) Une femme de 56 ans est décédée des suites d'une intoxication au monoxyde de carbone survenue après qu'elle a rallumé sa chaudière. L'incident s'inscrit dans la série d'alertes liées au retour du froid. 2 sources, 2 articles · Pierrefonds — Oise ### 11 November 2026 — [Blagnac : une femme gravement intoxiquée au monoxyde de carbone](https://acturadar.com/en/events/16907-blagnac-une-femme-gravement-intoxiquee-au-monoxyde-de-carbone.md) Une femme a été hospitalisée en urgence absolue à l'hôpital de Purpan après une intoxication au monoxyde de carbone survenue rue Bacquié à Blagnac, le 11 novembre vers 18 heures. 2 sources, 2 articles · Blagnac — Haute-Garonne ### 12 November 2026 — [Un homme et un enfant hospitalisés après une panne de réchaud à gaz dans le Pas-de-Calais](https://acturadar.com/en/events/17121-un-homme-et-un-enfant-hospitalises-apres-une-panne-de-rechaud-a-gaz-dans-le-pas.md) Mercredi 11 novembre 2026, un adulte et un enfant ont été pris en charge par les sapeurs-pompiers du Pas-de-Calais après la panne d'un réchaud à gaz. 1 sources, 1 articles · Pas-de-Calais --- Cite as: Acturadar, “Carbon monoxide poisonings with the return of cold weather in France”, https://acturadar.com/en/stories/427-carbon-monoxide-poisonings-with-the-return-of-cold-weather-in-france Methodology: https://acturadar.com/en/methodology