SmogRank / Episodes / Spain
North-eastern Spain and France, January and February 2024
For 7 days, from 27 January to 2 February 2024, 33 cities in Spain, France and Portugal had PM2.5 at least twice their usual for the time of year. The worst reading was Paredes, Porto, Portugal: 43.7 µg/m³ on 30 January, about 3.5× its usual 12.4.
No cause named We have no fire or smoke records for these days, so we only say what the measurements show.
Cities reached 33 in 3 countries
Days 7 27 January to 2 February 2024
Worst day 1 February 15 cities counted
Furthest above usual 5.9× Tolosa
Day by day
Play 1 February 15 cities at twice their usual or more
Algete Torrejón de Ardoz Alcalá de Henares Coslada Azuqueca de Henares Madrid Valdemoro Fuenlabrada Móstoles Collado-Villalba Toledo Medina del Campo Valladolid Burgos Palencia Puertollano Logroño Albacete Salamanca Tudela Gasteiz / Vitoria Santurtzi Zaragoza Jaén Bermeo Córdoba Zarautz Oria Hernani Donostia / San Sebastián Villena Onda Sagunto Ontinyent Grao de Murviedro Molina de Segura Elda Granada Lorca Burriana Castelló de la Plana Anglet Benicàssim Alicante Avilés Alcalá de Guadaira Sevilla Vila Real Mont-de-Marsan Salou Ourense Lugo Huelva Lalín Viveiro les Escaldes Teo Narón Santiago de Compostela Culleredo Arteixo Toulouse Manlleu Montauban Lisbon Corroios Cacém Palma Marratxí Girona Castres Perpignan Mollet del Vallès Bailén Lleida Cuenca Gijón Tarragona Murcia Amora Sama Tarbes León Vilanova i la Geltrú Barrio de Peral Amorebieta Oviedo A Coruña Barcelona Cartagena Paredes Calahorra Vigo Ciudad Real Bilbao Lourdes Pau Ferrol Torrevieja Laudio / Llodio Durango Valencia Getxo Pontevedra Tolosa 24 Jan 25 26 27 28 29 30 31 1 Feb 2 3 4 5 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
Lleida Lleida, 24 January: 49.5 µg/m³, 3.1× usual Lleida, 25 January: 37.0 µg/m³, 2.3× usual Lleida, 26 January: 25.6 µg/m³, 1.6× usual Lleida, 27 January: 32.7 µg/m³, 2.1× usual Lleida, 28 January: 32.1 µg/m³, 2.0× usual Lleida, 29 January: 16.0 µg/m³, 1.0× usual Lleida, 30 January: 26.2 µg/m³, 1.7× usual Lleida, 31 January: 32.7 µg/m³, 2.1× usual Lleida, 1 February: no reading Lleida, 2 February: 38.0 µg/m³, 2.4× usual Lleida, 3 February: 29.5 µg/m³, 1.9× usual Lleida, 4 February: 24.6 µg/m³, 1.6× usual Lleida, 5 February: 21.3 µg/m³, 1.3× usual Barcelona Barcelona, 24 January: 25.0 µg/m³, 2.3× usual Barcelona, 25 January: 32.9 µg/m³, 3.0× usual Barcelona, 26 January: 31.8 µg/m³, 2.9× usual Barcelona, 27 January: 37.0 µg/m³, 3.4× usual Barcelona, 28 January: 21.9 µg/m³, 2.0× usual Barcelona, 29 January: 12.2 µg/m³, 1.1× usual Barcelona, 30 January: 11.5 µg/m³, 1.1× usual Barcelona, 31 January: 16.0 µg/m³, 1.5× usual Barcelona, 1 February: 26.7 µg/m³, 2.5× usual Barcelona, 2 February: 26.7 µg/m³, 2.5× usual Barcelona, 3 February: 20.2 µg/m³, 1.9× usual Barcelona, 4 February: 19.8 µg/m³, 1.8× usual Barcelona, 5 February: 22.5 µg/m³, 2.1× usual Vigo Vigo, 24 January: 22.6 µg/m³, 1.9× usual Vigo, 25 January: 31.2 µg/m³, 2.7× usual Vigo, 26 January: 33.8 µg/m³, 2.9× usual Vigo, 27 January: 28.4 µg/m³, 2.4× usual Vigo, 28 January: 24.2 µg/m³, 2.1× usual Vigo, 29 January: 21.2 µg/m³, 1.8× usual Vigo, 30 January: 30.5 µg/m³, 2.6× usual Vigo, 31 January: 32.3 µg/m³, 2.8× usual Vigo, 1 February: 32.7 µg/m³, 2.8× usual Vigo, 2 February: 41.7 µg/m³, 3.6× usual Vigo, 3 February: 26.6 µg/m³, 2.3× usual Vigo, 4 February: 30.4 µg/m³, 2.6× usual Vigo, 5 February: 36.7 µg/m³, 3.2× usual Tarragona Tarragona, 24 January: 17.9 µg/m³, 1.7× usual Tarragona, 25 January: 28.4 µg/m³, 2.7× usual Tarragona, 26 January: 16.3 µg/m³, 1.6× usual Tarragona, 27 January: 25.2 µg/m³, 2.4× usual Tarragona, 28 January: 23.1 µg/m³, 2.2× usual Tarragona, 29 January: 12.6 µg/m³, 1.2× usual Tarragona, 30 January: 11.4 µg/m³, 1.1× usual Tarragona, 31 January: 17.3 µg/m³, 1.7× usual Tarragona, 1 February: no reading Tarragona, 2 February: 16.8 µg/m³, 1.6× usual Tarragona, 3 February: 16.9 µg/m³, 1.6× usual Tarragona, 4 February: 13.5 µg/m³, 1.3× usual Tarragona, 5 February: 15.3 µg/m³, 1.5× usual Valencia Valencia, 24 January: 14.0 µg/m³, 1.9× usual Valencia, 25 January: 25.7 µg/m³, 3.5× usual Valencia, 26 January: 20.8 µg/m³, 2.8× usual Valencia, 27 January: 31.1 µg/m³, 4.3× usual Valencia, 28 January: 32.6 µg/m³, 4.5× usual Valencia, 29 January: 19.2 µg/m³, 2.6× usual Valencia, 30 January: 21.4 µg/m³, 2.9× usual Valencia, 31 January: 19.6 µg/m³, 2.7× usual Valencia, 1 February: 21.7 µg/m³, 3.0× usual Valencia, 2 February: 20.2 µg/m³, 2.8× usual Valencia, 3 February: 19.7 µg/m³, 2.7× usual Valencia, 4 February: 17.3 µg/m³, 2.4× usual Valencia, 5 February: no reading Bailén Bailén, 24 January: 18.8 µg/m³, 1.4× usual Bailén, 25 January: 23.4 µg/m³, 1.7× usual Bailén, 26 January: 27.1 µg/m³, 2.0× usual Bailén, 27 January: 24.7 µg/m³, 1.8× usual Bailén, 28 January: 28.3 µg/m³, 2.1× usual Bailén, 29 January: 29.5 µg/m³, 2.2× usual Bailén, 30 January: 27.0 µg/m³, 2.0× usual Bailén, 31 January: 18.6 µg/m³, 1.4× usual Bailén, 1 February: 18.5 µg/m³, 1.4× usual Bailén, 2 February: no reading Bailén, 3 February: 22.8 µg/m³, 1.7× usual Bailén, 4 February: 34.7 µg/m³, 2.6× usual Bailén, 5 February: 31.0 µg/m³, 2.3× usual Ciudad Real Ciudad Real, 24 January: 13.0 µg/m³, 1.8× usual Ciudad Real, 25 January: 20.4 µg/m³, 2.9× usual Ciudad Real, 26 January: 26.8 µg/m³, 3.8× usual Ciudad Real, 27 January: 27.7 µg/m³, 3.9× usual Ciudad Real, 28 January: 23.8 µg/m³, 3.4× usual Ciudad Real, 29 January: 16.8 µg/m³, 2.4× usual Ciudad Real, 30 January: 15.1 µg/m³, 2.1× usual Ciudad Real, 31 January: 13.7 µg/m³, 1.9× usual Ciudad Real, 1 February: 19.9 µg/m³, 2.8× usual Ciudad Real, 2 February: 26.0 µg/m³, 3.7× usual Ciudad Real, 3 February: 18.1 µg/m³, 2.5× usual Ciudad Real, 4 February: 21.5 µg/m³, 3.0× usual Ciudad Real, 5 February: 17.4 µg/m³, 2.5× usual Bilbao Bilbao, 24 January: 13.0 µg/m³, 2.0× usual Bilbao, 25 January: 16.4 µg/m³, 2.5× usual Bilbao, 26 January: 25.5 µg/m³, 3.9× usual Bilbao, 27 January: 17.6 µg/m³, 2.7× usual Bilbao, 28 January: 10.3 µg/m³, 1.6× usual Bilbao, 29 January: 10.7 µg/m³, 1.6× usual Bilbao, 30 January: 14.0 µg/m³, 2.1× usual Bilbao, 31 January: 18.6 µg/m³, 2.8× usual Bilbao, 1 February: 26.3 µg/m³, 4.0× usual Bilbao, 2 February: 12.2 µg/m³, 1.8× usual Bilbao, 3 February: 12.4 µg/m³, 1.9× usual Bilbao, 4 February: 23.0 µg/m³, 3.5× usual Bilbao, 5 February: no reading Murcia Murcia, 24 January: 20.9 µg/m³, 1.5× usual Murcia, 25 January: 21.8 µg/m³, 1.5× usual Murcia, 26 January: 25.2 µg/m³, 1.8× usual Murcia, 27 January: 35.5 µg/m³, 2.5× usual Murcia, 28 January: 23.6 µg/m³, 1.7× usual Murcia, 29 January: 17.5 µg/m³, 1.2× usual Murcia, 30 January: 21.0 µg/m³, 1.5× usual Murcia, 31 January: 16.9 µg/m³, 1.2× usual Murcia, 1 February: 21.5 µg/m³, 1.5× usual Murcia, 2 February: 26.3 µg/m³, 1.8× usual Murcia, 3 February: 28.6 µg/m³, 2.0× usual Murcia, 4 February: 20.8 µg/m³, 1.5× usual Murcia, 5 February: 21.4 µg/m³, 1.5× usual Torrevieja Torrevieja, 24 January: 15.8 µg/m³, 2.1× usual Torrevieja, 25 January: 11.5 µg/m³, 1.5× usual Torrevieja, 26 January: 22.7 µg/m³, 3.0× usual Torrevieja, 27 January: 31.1 µg/m³, 4.1× usual Torrevieja, 28 January: 16.4 µg/m³, 2.2× usual Torrevieja, 29 January: 9.3 µg/m³, 1.2× usual Torrevieja, 30 January: 8.5 µg/m³, 1.1× usual Torrevieja, 31 January: 7.2 µg/m³, 1.0× usual Torrevieja, 1 February: 10.9 µg/m³, 1.5× usual Torrevieja, 2 February: 21.8 µg/m³, 2.9× usual Torrevieja, 3 February: 21.0 µg/m³, 2.8× usual Torrevieja, 4 February: 14.3 µg/m³, 1.9× usual Torrevieja, 5 February: no reading Cartagena Cartagena, 24 January: 15.0 µg/m³, 1.6× usual Cartagena, 25 January: 11.0 µg/m³, 1.2× usual Cartagena, 26 January: 19.1 µg/m³, 2.1× usual Cartagena, 27 January: 31.1 µg/m³, 3.4× usual Cartagena, 28 January: 15.0 µg/m³, 1.6× usual Cartagena, 29 January: 12.2 µg/m³, 1.3× usual Cartagena, 30 January: 13.4 µg/m³, 1.5× usual Cartagena, 31 January: 9.3 µg/m³, 1.0× usual Cartagena, 1 February: 11.2 µg/m³, 1.2× usual Cartagena, 2 February: 17.0 µg/m³, 1.8× usual Cartagena, 3 February: 15.8 µg/m³, 1.7× usual Cartagena, 4 February: 12.3 µg/m³, 1.3× usual Cartagena, 5 February: 15.1 µg/m³, 1.6× usual Tarbes Tarbes, 24 January: 17.4 µg/m³, 1.4× usual Tarbes, 25 January: 17.8 µg/m³, 1.5× usual Tarbes, 26 January: 22.5 µg/m³, 1.8× usual Tarbes, 27 January: 28.8 µg/m³, 2.4× usual Tarbes, 28 January: 22.2 µg/m³, 1.8× usual Tarbes, 29 January: 28.1 µg/m³, 2.3× usual Tarbes, 30 January: 33.4 µg/m³, 2.7× usual Tarbes, 31 January: 30.7 µg/m³, 2.5× usual Tarbes, 1 February: 33.7 µg/m³, 2.8× usual Tarbes, 2 February: 19.4 µg/m³, 1.6× usual Tarbes, 3 February: 18.7 µg/m³, 1.5× usual Tarbes, 4 February: 27.0 µg/m³, 2.2× usual Tarbes, 5 February: 19.3 µg/m³, 1.6× usual Vilanova i la Geltrú Vilanova i la Geltrú, 24 January: 16.0 µg/m³, 1.6× usual Vilanova i la Geltrú, 25 January: 21.3 µg/m³, 2.2× usual Vilanova i la Geltrú, 26 January: 15.2 µg/m³, 1.6× usual Vilanova i la Geltrú, 27 January: 28.7 µg/m³, 2.9× usual Vilanova i la Geltrú, 28 January: 25.3 µg/m³, 2.6× usual Vilanova i la Geltrú, 29 January: 13.6 µg/m³, 1.4× usual Vilanova i la Geltrú, 30 January: 13.0 µg/m³, 1.3× usual Vilanova i la Geltrú, 31 January: 15.2 µg/m³, 1.6× usual Vilanova i la Geltrú, 1 February: no reading Vilanova i la Geltrú, 2 February: 19.8 µg/m³, 2.0× usual Vilanova i la Geltrú, 3 February: 15.7 µg/m³, 1.6× usual Vilanova i la Geltrú, 4 February: 15.5 µg/m³, 1.6× usual Vilanova i la Geltrú, 5 February: 14.8 µg/m³, 1.5× usual Barrio de Peral Barrio de Peral, 24 January: 11.5 µg/m³, 1.3× usual Barrio de Peral, 25 January: 9.2 µg/m³, 1.0× usual Barrio de Peral, 26 January: 20.7 µg/m³, 2.3× usual Barrio de Peral, 27 January: 26.3 µg/m³, 2.9× usual Barrio de Peral, 28 January: 14.4 µg/m³, 1.6× usual Barrio de Peral, 29 January: 11.5 µg/m³, 1.3× usual Barrio de Peral, 30 January: 15.3 µg/m³, 1.7× usual Barrio de Peral, 31 January: 9.5 µg/m³, 1.0× usual Barrio de Peral, 1 February: 13.6 µg/m³, 1.5× usual Barrio de Peral, 2 February: 17.8 µg/m³, 2.0× usual Barrio de Peral, 3 February: 15.4 µg/m³, 1.7× usual Barrio de Peral, 4 February: 12.7 µg/m³, 1.4× usual Barrio de Peral, 5 February: 12.2 µg/m³, 1.3× usual Mollet del Vallès Mollet del Vallès, 24 January: 35.9 µg/m³, 1.8× usual Mollet del Vallès, 25 January: 40.0 µg/m³, 2.0× usual Mollet del Vallès, 26 January: 28.5 µg/m³, 1.4× usual Mollet del Vallès, 27 January: 37.4 µg/m³, 1.8× usual Mollet del Vallès, 28 January: 41.1 µg/m³, 2.0× usual Mollet del Vallès, 29 January: 22.3 µg/m³, 1.1× usual Mollet del Vallès, 30 January: 22.0 µg/m³, 1.1× usual Mollet del Vallès, 31 January: 24.9 µg/m³, 1.2× usual Mollet del Vallès, 1 February: no reading Mollet del Vallès, 2 February: 34.2 µg/m³, 1.7× usual Mollet del Vallès, 3 February: 28.5 µg/m³, 1.4× usual Mollet del Vallès, 4 February: 26.2 µg/m³, 1.3× usual Mollet del Vallès, 5 February: 26.3 µg/m³, 1.3× usual Paredes Paredes, 24 January: 13.4 µg/m³, 1.1× usual Paredes, 25 January: 12.7 µg/m³, 1.0× usual Paredes, 26 January: 18.3 µg/m³, 1.5× usual Paredes, 27 January: 23.2 µg/m³, 1.9× usual Paredes, 28 January: 27.4 µg/m³, 2.2× usual Paredes, 29 January: 34.2 µg/m³, 2.8× usual Paredes, 30 January: 43.7 µg/m³, 3.5× usual Paredes, 31 January: 29.3 µg/m³, 2.4× usual Paredes, 1 February: no reading Paredes, 2 February: 29.9 µg/m³, 2.4× usual Paredes, 3 February: 18.9 µg/m³, 1.5× usual Paredes, 4 February: 34.1 µg/m³, 2.8× usual Paredes, 5 February: 43.6 µg/m³, 3.5× usual Calahorra Calahorra, 24 January: 8.0 µg/m³, 1.0× usual Calahorra, 25 January: 7.8 µg/m³, 1.0× usual Calahorra, 26 January: 6.3 µg/m³, 0.8× usual Calahorra, 27 January: 23.8 µg/m³, 3.1× usual Calahorra, 28 January: 27.3 µg/m³, 3.5× usual Calahorra, 29 January: 18.5 µg/m³, 2.4× usual Calahorra, 30 January: 15.7 µg/m³, 2.0× usual Calahorra, 31 January: 13.7 µg/m³, 1.8× usual Calahorra, 1 February: 14.9 µg/m³, 1.9× usual Calahorra, 2 February: 7.4 µg/m³, 0.9× usual Calahorra, 3 February: 8.0 µg/m³, 1.0× usual Calahorra, 4 February: 11.3 µg/m³, 1.4× usual Calahorra, 5 February: 12.6 µg/m³, 1.6× usual Oviedo Oviedo, 24 January: 15.4 µg/m³, 1.4× usual Oviedo, 25 January: 18.2 µg/m³, 1.7× usual Oviedo, 26 January: 21.0 µg/m³, 1.9× usual Oviedo, 27 January: 24.6 µg/m³, 2.3× usual Oviedo, 28 January: 23.0 µg/m³, 2.1× usual Oviedo, 29 January: 34.0 µg/m³, 3.1× usual Oviedo, 30 January: 24.0 µg/m³, 2.2× usual Oviedo, 31 January: 22.8 µg/m³, 2.1× usual Oviedo, 1 February: 19.8 µg/m³, 1.8× usual Oviedo, 2 February: 15.1 µg/m³, 1.4× usual Oviedo, 3 February: 17.3 µg/m³, 1.6× usual Oviedo, 4 February: 19.6 µg/m³, 1.8× usual Oviedo, 5 February: 24.0 µg/m³, 2.2× usual Sama Sama, 24 January: no reading Sama, 25 January: 15.6 µg/m³, 1.5× usual Sama, 26 January: 16.3 µg/m³, 1.5× usual Sama, 27 January: 17.8 µg/m³, 1.7× usual Sama, 28 January: 13.9 µg/m³, 1.3× usual Sama, 29 January: 27.4 µg/m³, 2.6× usual Sama, 30 January: 21.1 µg/m³, 2.0× usual Sama, 31 January: 20.4 µg/m³, 1.9× usual Sama, 1 February: 22.6 µg/m³, 2.1× usual Sama, 2 February: 15.8 µg/m³, 1.5× usual Sama, 3 February: 23.7 µg/m³, 2.2× usual Sama, 4 February: 20.7 µg/m³, 1.9× usual Sama, 5 February: 22.4 µg/m³, 2.1× usual Gijón Gijón, 24 January: 18.0 µg/m³, 1.6× usual Gijón, 25 January: 15.9 µg/m³, 1.4× usual Gijón, 26 January: 16.4 µg/m³, 1.4× usual Gijón, 27 January: 23.0 µg/m³, 2.0× usual Gijón, 28 January: 22.0 µg/m³, 1.9× usual Gijón, 29 January: 26.9 µg/m³, 2.4× usual Gijón, 30 January: 23.3 µg/m³, 2.0× usual Gijón, 31 January: 27.8 µg/m³, 2.4× usual Gijón, 1 February: 26.8 µg/m³, 2.4× usual Gijón, 2 February: 11.3 µg/m³, 1.0× usual Gijón, 3 February: 11.2 µg/m³, 1.0× usual Gijón, 4 February: 20.9 µg/m³, 1.8× usual Gijón, 5 February: 22.5 µg/m³, 2.0× usual A Coruña A Coruña, 24 January: 11.1 µg/m³, 1.3× usual A Coruña, 25 January: 15.0 µg/m³, 1.8× usual A Coruña, 26 January: 19.8 µg/m³, 2.4× usual A Coruña, 27 January: 16.5 µg/m³, 2.0× usual A Coruña, 28 January: 15.9 µg/m³, 1.9× usual A Coruña, 29 January: 14.5 µg/m³, 1.7× usual A Coruña, 30 January: 28.0 µg/m³, 3.3× usual A Coruña, 31 January: 27.3 µg/m³, 3.3× usual A Coruña, 1 February: 23.8 µg/m³, 2.8× usual A Coruña, 2 February: 16.2 µg/m³, 1.9× usual A Coruña, 3 February: 14.2 µg/m³, 1.7× usual A Coruña, 4 February: 22.0 µg/m³, 2.6× usual A Coruña, 5 February: 23.9 µg/m³, 2.8× usual Ferrol Ferrol, 24 January: 7.1 µg/m³, 1.1× usual Ferrol, 25 January: 14.2 µg/m³, 2.2× usual Ferrol, 26 January: 15.4 µg/m³, 2.4× usual Ferrol, 27 January: 21.3 µg/m³, 3.3× usual Ferrol, 28 January: 14.8 µg/m³, 2.3× usual Ferrol, 29 January: 12.0 µg/m³, 1.8× usual Ferrol, 30 January: 26.1 µg/m³, 4.0× usual Ferrol, 31 January: 20.5 µg/m³, 3.2× usual Ferrol, 1 February: no reading Ferrol, 2 February: 10.8 µg/m³, 1.7× usual Ferrol, 3 February: 14.6 µg/m³, 2.2× usual Ferrol, 4 February: 19.7 µg/m³, 3.0× usual Ferrol, 5 February: 23.5 µg/m³, 3.6× usual Lourdes Lourdes, 24 January: 15.1 µg/m³, 1.8× usual Lourdes, 25 January: 14.4 µg/m³, 1.7× usual Lourdes, 26 January: 17.7 µg/m³, 2.1× usual Lourdes, 27 January: 23.7 µg/m³, 2.8× usual Lourdes, 28 January: 13.0 µg/m³, 1.5× usual Lourdes, 29 January: 16.1 µg/m³, 1.9× usual Lourdes, 30 January: 24.4 µg/m³, 2.9× usual Lourdes, 31 January: 30.7 µg/m³, 3.7× usual Lourdes, 1 February: 33.6 µg/m³, 4.0× usual Lourdes, 2 February: 25.6 µg/m³, 3.0× usual Lourdes, 3 February: 27.7 µg/m³, 3.3× usual Lourdes, 4 February: 25.5 µg/m³, 3.0× usual Lourdes, 5 February: 21.8 µg/m³, 2.6× usual Pau Pau, 24 January: 7.1 µg/m³, 0.8× usual Pau, 25 January: 13.1 µg/m³, 1.4× usual Pau, 26 January: 18.2 µg/m³, 2.0× usual Pau, 27 January: 17.4 µg/m³, 1.9× usual Pau, 28 January: 10.2 µg/m³, 1.1× usual Pau, 29 January: 11.9 µg/m³, 1.3× usual Pau, 30 January: 18.1 µg/m³, 2.0× usual Pau, 31 January: 27.8 µg/m³, 3.1× usual Pau, 1 February: 36.7 µg/m³, 4.0× usual Pau, 2 February: 25.5 µg/m³, 2.8× usual Pau, 3 February: 16.3 µg/m³, 1.8× usual Pau, 4 February: 23.2 µg/m³, 2.5× usual Pau, 5 February: 18.4 µg/m³, 2.0× usual Durango Durango, 24 January: 14.8 µg/m³, 2.0× usual Durango, 25 January: 19.8 µg/m³, 2.6× usual Durango, 26 January: 24.3 µg/m³, 3.2× usual Durango, 27 January: 17.3 µg/m³, 2.3× usual Durango, 28 January: 11.0 µg/m³, 1.5× usual Durango, 29 January: 13.2 µg/m³, 1.8× usual Durango, 30 January: 17.5 µg/m³, 2.3× usual Durango, 31 January: 23.1 µg/m³, 3.1× usual Durango, 1 February: 33.8 µg/m³, 4.5× usual Durango, 2 February: 17.5 µg/m³, 2.3× usual Durango, 3 February: 13.1 µg/m³, 1.7× usual Durango, 4 February: 21.8 µg/m³, 2.9× usual Durango, 5 February: no reading Laudio / Llodio Laudio / Llodio, 24 January: 11.7 µg/m³, 1.6× usual Laudio / Llodio, 25 January: 16.7 µg/m³, 2.3× usual Laudio / Llodio, 26 January: 23.1 µg/m³, 3.2× usual Laudio / Llodio, 27 January: 17.8 µg/m³, 2.4× usual Laudio / Llodio, 28 January: 14.5 µg/m³, 2.0× usual Laudio / Llodio, 29 January: 13.7 µg/m³, 1.9× usual Laudio / Llodio, 30 January: 15.1 µg/m³, 2.1× usual Laudio / Llodio, 31 January: 20.5 µg/m³, 2.8× usual Laudio / Llodio, 1 February: 30.6 µg/m³, 4.2× usual Laudio / Llodio, 2 February: 13.3 µg/m³, 1.8× usual Laudio / Llodio, 3 February: 11.6 µg/m³, 1.6× usual Laudio / Llodio, 4 February: 20.4 µg/m³, 2.8× usual Laudio / Llodio, 5 February: no reading León León, 24 January: 15.4 µg/m³, 1.4× usual León, 25 January: 18.6 µg/m³, 1.7× usual León, 26 January: 22.3 µg/m³, 2.1× usual León, 27 January: 17.8 µg/m³, 1.6× usual León, 28 January: 16.9 µg/m³, 1.6× usual León, 29 January: 21.6 µg/m³, 2.0× usual León, 30 January: 16.5 µg/m³, 1.5× usual León, 31 January: 23.5 µg/m³, 2.2× usual León, 1 February: 30.3 µg/m³, 2.8× usual León, 2 February: 31.1 µg/m³, 2.9× usual León, 3 February: 14.9 µg/m³, 1.4× usual León, 4 February: 15.5 µg/m³, 1.4× usual León, 5 February: 19.3 µg/m³, 1.8× usual Tolosa Tolosa, 24 January: no reading Tolosa, 25 January: no reading Tolosa, 26 January: no reading Tolosa, 27 January: no reading Tolosa, 28 January: no reading Tolosa, 29 January: no reading Tolosa, 30 January: no reading Tolosa, 31 January: no reading Tolosa, 1 February: 29.7 µg/m³, 5.9× usual Tolosa, 2 February: no reading Tolosa, 3 February: no reading Tolosa, 4 February: no reading Tolosa, 5 February: no reading Amorebieta Amorebieta, 24 January: no reading Amorebieta, 25 January: no reading Amorebieta, 26 January: no reading Amorebieta, 27 January: no reading Amorebieta, 28 January: no reading Amorebieta, 29 January: 13.1 µg/m³, 1.4× usual Amorebieta, 30 January: 14.8 µg/m³, 1.5× usual Amorebieta, 31 January: 23.3 µg/m³, 2.4× usual Amorebieta, 1 February: 28.6 µg/m³, 3.0× usual Amorebieta, 2 February: 12.5 µg/m³, 1.3× usual Amorebieta, 3 February: 12.2 µg/m³, 1.3× usual Amorebieta, 4 February: 17.8 µg/m³, 1.9× usual Amorebieta, 5 February: no reading Pontevedra Pontevedra, 24 January: no reading Pontevedra, 25 January: no reading Pontevedra, 26 January: no reading Pontevedra, 27 January: no reading Pontevedra, 28 January: no reading Pontevedra, 29 January: 19.0 µg/m³, 3.3× usual Pontevedra, 30 January: 20.7 µg/m³, 3.6× usual Pontevedra, 31 January: 23.7 µg/m³, 4.1× usual Pontevedra, 1 February: 26.4 µg/m³, 4.6× usual Pontevedra, 2 February: 33.0 µg/m³, 5.7× usual Pontevedra, 3 February: 18.3 µg/m³, 3.2× usual Pontevedra, 4 February: 20.5 µg/m³, 3.5× usual Pontevedra, 5 February: 25.2 µg/m³, 4.3× usual Cuenca Cuenca, 24 January: 23.7 µg/m³, 2.2× usual Cuenca, 25 January: 22.5 µg/m³, 2.1× usual Cuenca, 26 January: 22.7 µg/m³, 2.1× usual Cuenca, 27 January: 17.3 µg/m³, 1.6× usual Cuenca, 28 January: 14.5 µg/m³, 1.3× usual Cuenca, 29 January: 18.4 µg/m³, 1.7× usual Cuenca, 30 January: 12.2 µg/m³, 1.1× usual Cuenca, 31 January: 15.9 µg/m³, 1.5× usual Cuenca, 1 February: 26.2 µg/m³, 2.4× usual Cuenca, 2 February: 27.5 µg/m³, 2.5× usual Cuenca, 3 February: 19.0 µg/m³, 1.8× usual Cuenca, 4 February: 17.6 µg/m³, 1.6× usual Cuenca, 5 February: 20.8 µg/m³, 1.9× usual Getxo Getxo, 24 January: no reading Getxo, 25 January: no reading Getxo, 26 January: no reading Getxo, 27 January: no reading Getxo, 28 January: no reading Getxo, 29 January: 11.8 µg/m³, 2.1× usual Getxo, 30 January: 11.6 µg/m³, 2.1× usual Getxo, 31 January: 16.2 µg/m³, 2.9× usual Getxo, 1 February: 25.7 µg/m³, 4.6× usual Getxo, 2 February: 8.2 µg/m³, 1.5× usual Getxo, 3 February: 7.7 µg/m³, 1.4× usual Getxo, 4 February: 18.8 µg/m³, 3.4× usual Getxo, 5 February: no reading Amora Amora, 24 January: 12.1 µg/m³, 1.2× usual Amora, 25 January: 18.2 µg/m³, 1.8× usual Amora, 26 January: 21.6 µg/m³, 2.1× usual Amora, 27 January: 19.7 µg/m³, 2.0× usual Amora, 28 January: 18.2 µg/m³, 1.8× usual Amora, 29 January: 17.7 µg/m³, 1.8× usual Amora, 30 January: 15.0 µg/m³, 1.5× usual Amora, 31 January: 15.5 µg/m³, 1.5× usual Amora, 1 February: 19.8 µg/m³, 2.0× usual Amora, 2 February: 26.5 µg/m³, 2.6× usual Amora, 3 February: 26.3 µg/m³, 2.6× usual Amora, 4 February: 27.0 µg/m³, 2.7× usual Amora, 5 February: 28.5 µg/m³, 2.8× usual 24 Jan 26 28 30 1 Feb 3 5 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. Good 0–50
Moderate 51–100
Sensitive groups 101–150
Unhealthy 151–200
Very unhealthy 201–300
Hazardous 301+
Every city it reached
City Days Highest Usual Above usual
Tolosa Basque Country, Spain 1 1 February 4.2 5.9× Pontevedra Galicia, Spain 2 2 February 5.8 5.7× Getxo Basque Country, Spain 1 1 February 5.6 4.6× Durango Basque Country, Spain 1 1 February 7.5 4.5× Valencia Valencia, Spain 2 28 January 7.3 4.5× Laudio / Llodio Basque Country, Spain 1 1 February 7.3 4.2× Torrevieja Valencia, Spain 1 27 January 7.5 4.1× Pau New Aquitaine, France 1 1 February 9.1 4.0× Ferrol Galicia, Spain 1 30 January 6.5 4.0× Lourdes Occitanie, France 1 1 February 8.4 4.0× Bilbao Basque Country, Spain 1 1 February 6.6 4.0× Ciudad Real Castille-La Mancha, Spain 1 27 January 7.1 3.9× Vigo Galicia, Spain 4 2 February 11.6 3.6× Paredes Porto, Portugal 4 30 January 12.4 3.5× Calahorra La Rioja, Spain 1 28 January 7.8 3.5× Barcelona Catalonia, Spain 2 27 January 10.8 3.4× Cartagena Murcia, Spain 1 27 January 9.2 3.4× A Coruña Galicia, Spain 2 30 January 8.4 3.3× Oviedo Asturias, Spain 1 29 January 10.8 3.1× Lleida Catalonia, Spain 2 24 January 15.8 3.1× Amorebieta Basque Country, Spain 1 1 February 9.6 3.0× Vilanova i la Geltrú Catalonia, Spain 2 27 January 9.8 2.9× Barrio de Peral Murcia, Spain 1 27 January 9.1 2.9× León Castille and León, Spain 2 2 February 10.8 2.9× Amora Setúbal, Portugal 1 5 February 10.1 2.8× Tarbes Occitanie, France 2 1 February 12.2 2.8× Tarragona Catalonia, Spain 1 25 January 10.4 2.7× Sama Asturias, Spain 1 29 January 10.7 2.6× Bailén Andalusia, Spain 1 4 February 13.6 2.6× Cuenca Castille-La Mancha, Spain 1 2 February 10.8 2.5× Murcia Murcia, Spain 1 27 January 14.3 2.5× Gijón Asturias, Spain 3 31 January 11.4 2.4× Mollet del Vallès Catalonia, Spain 1 28 January 20.5 2.0×
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 Spain and France
Number 14 of 58 episodes in Spain and France since our records began, by cities reached.
Central Europe, February and March 2023 274 Central Europe, December 2025 to January 2026 170 Western Europe, March 2023 119 Western Europe, January 2024 117 Western Europe, December 2024 75 North-eastern Spain and France, February 2023 72 France, The Netherlands and United Kingdom, January 2023 66 Central Europe, June 2025 63 North-eastern Spain, August 2025 44 North-eastern Spain and France, December 2023 to January 2024 44 France, Belgium and United Kingdom, November and December 2023 43 South-western Europe, February 2024 37 North-eastern Spain and France, January and February 2024 33 Bars: cities reached; colour: the level of the episode's highest daily reading. All 58 .
Use this page SmogRank, North-eastern Spain and France, January and February 2024: 33 cities with PM2.5 at twice their usual or more, 27 January to 2 February 2024, smogrank.com/episodes/2024-01-north-eastern-spain-and-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.
