SmogRank / Episodes / Spain
North-eastern Spain, August 2025
For 9 days, from 14 to 22 August 2025, 44 cities in Spain, Portugal and Andorra had PM2.5 at least twice their usual for the time of year. The worst reading was Ponferrada, Castille and León, Spain: 203.0 µg/m³ on 16 August, about 29× its usual 7.0.
No cause named We have no fire or smoke records for these days, so we only say what the measurements show.
Cities reached 44 in 3 countries
Days 9 14 to 22 August 2025
Worst day 18 August 21 cities counted
Furthest above usual 29× Ponferrada
Day by day
Play 18 August 21 cities at twice their usual or more
Ciudad Real Albacete Valladolid Logroño Calahorra Tudela Miranda de Ebro Gasteiz / Vitoria Laudio / Llodio Villena Onda Durango Amorebieta Sagunto Bilbao Ontinyent Grao de Murviedro Tolosa Elda Santurtzi Getxo Burriana Castelló de la Plana Zarautz Oria Bermeo Hernani Donostia / San Sebastián Benicàssim Alicante Torrevieja Cartagena Almería Málaga Sama Cártama Pau Lourdes Oviedo Gijón Alcalá de Guadaira Tarbes Salou Mont-de-Marsan Tarragona Huelva Barcelona Paredes Toulouse Ponte de Lima Montauban Palma Marratxí Faro Pontevedra Vigo Santiago de Compostela Ferrol Girona A Coruña Arteixo Castres Perpignan Sevilla Mollet del Vallès Alcalá de Henares Bailén Córdoba Valencia Manlleu Granada Barrio de Peral Zaragoza Murcia Lleida les Escaldes Jaén Molina de Segura Coslada Ourense Alcantarilla Soria Torrejón de Ardoz Avilés Fuenlabrada Algete Madrid Jumilla Palencia Valdemoro Narón Aranda de Duero Culleredo Pamplona Collado-Villalba Móstoles Caravaca Lorca Salamanca Manzanares Medina del Campo Lugo Vila Real Burgos Lalín León Ponferrada 11 Aug 12 13 14 15 16 17 18 19 20 21 22 23 24 25 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
Ponferrada Ponferrada, 11 August: 73.1 µg/m³, 10× usual Ponferrada, 12 August: 43.1 µg/m³, 6.2× usual Ponferrada, 13 August: 79.7 µg/m³, 11× usual Ponferrada, 14 August: 75.8 µg/m³, 11× usual Ponferrada, 15 August: 101.0 µg/m³, 14× usual Ponferrada, 16 August: 203.0 µg/m³, 29× usual Ponferrada, 17 August: 194.0 µg/m³, 28× usual Ponferrada, 18 August: 167.0 µg/m³, 24× usual Ponferrada, 19 August: 40.6 µg/m³, 5.8× usual Ponferrada, 20 August: 24.0 µg/m³, 3.4× usual Ponferrada, 21 August: 25.4 µg/m³, 3.6× usual Ponferrada, 22 August: 31.8 µg/m³, 4.5× usual Ponferrada, 23 August: 15.1 µg/m³, 2.2× usual Ponferrada, 24 August: 48.0 µg/m³, 6.9× usual Ponferrada, 25 August: 33.2 µg/m³, 4.7× usual Manlleu Manlleu, 11 August: 28.7 µg/m³, 2.4× usual Manlleu, 12 August: 29.5 µg/m³, 2.4× usual Manlleu, 13 August: 29.3 µg/m³, 2.4× usual Manlleu, 14 August: 22.7 µg/m³, 1.9× usual Manlleu, 15 August: 20.0 µg/m³, 1.7× usual Manlleu, 16 August: 24.8 µg/m³, 2.0× usual Manlleu, 17 August: 32.4 µg/m³, 2.7× usual Manlleu, 18 August: 36.8 µg/m³, 3.0× usual Manlleu, 19 August: 20.8 µg/m³, 1.7× usual Manlleu, 20 August: 15.7 µg/m³, 1.3× usual Manlleu, 21 August: 14.1 µg/m³, 1.2× usual Manlleu, 22 August: 10.5 µg/m³, 0.9× usual Manlleu, 23 August: 10.7 µg/m³, 0.9× usual Manlleu, 24 August: 15.9 µg/m³, 1.3× usual Manlleu, 25 August: 19.1 µg/m³, 1.6× usual León León, 11 August: 28.4 µg/m³, 4.8× usual León, 12 August: 50.3 µg/m³, 8.5× usual León, 13 August: 51.3 µg/m³, 8.7× usual León, 14 August: 25.0 µg/m³, 4.2× usual León, 15 August: 21.7 µg/m³, 3.7× usual León, 16 August: 34.8 µg/m³, 5.9× usual León, 17 August: 126.0 µg/m³, 21× usual León, 18 August: 111.0 µg/m³, 19× usual León, 19 August: 64.3 µg/m³, 11× usual León, 20 August: 4.2 µg/m³, 0.7× usual León, 21 August: 5.9 µg/m³, 1.0× usual León, 22 August: 9.0 µg/m³, 1.5× usual León, 23 August: 14.5 µg/m³, 2.5× usual León, 24 August: 20.4 µg/m³, 3.5× usual León, 25 August: 19.5 µg/m³, 3.3× usual Fuenlabrada Fuenlabrada, 11 August: 27.4 µg/m³, 2.0× usual Fuenlabrada, 12 August: 39.2 µg/m³, 2.9× usual Fuenlabrada, 13 August: 22.3 µg/m³, 1.6× usual Fuenlabrada, 14 August: 20.2 µg/m³, 1.5× usual Fuenlabrada, 15 August: 20.4 µg/m³, 1.5× usual Fuenlabrada, 16 August: 23.9 µg/m³, 1.8× usual Fuenlabrada, 17 August: no reading Fuenlabrada, 18 August: 40.7 µg/m³, 3.0× usual Fuenlabrada, 19 August: 61.2 µg/m³, 4.5× usual Fuenlabrada, 20 August: 37.7 µg/m³, 2.8× usual Fuenlabrada, 21 August: 17.2 µg/m³, 1.3× usual Fuenlabrada, 22 August: 15.7 µg/m³, 1.2× usual Fuenlabrada, 23 August: 19.5 µg/m³, 1.4× usual Fuenlabrada, 24 August: 21.3 µg/m³, 1.6× usual Fuenlabrada, 25 August: no reading Mollet del Vallès Mollet del Vallès, 11 August: 26.1 µg/m³, 2.3× usual Mollet del Vallès, 12 August: 24.9 µg/m³, 2.2× usual Mollet del Vallès, 13 August: 25.9 µg/m³, 2.3× usual Mollet del Vallès, 14 August: 20.2 µg/m³, 1.8× usual Mollet del Vallès, 15 August: 20.3 µg/m³, 1.8× usual Mollet del Vallès, 16 August: 21.4 µg/m³, 1.9× usual Mollet del Vallès, 17 August: 25.4 µg/m³, 2.2× usual Mollet del Vallès, 18 August: 24.7 µg/m³, 2.2× usual Mollet del Vallès, 19 August: 21.7 µg/m³, 1.9× usual Mollet del Vallès, 20 August: 17.2 µg/m³, 1.5× usual Mollet del Vallès, 21 August: 12.3 µg/m³, 1.1× usual Mollet del Vallès, 22 August: 11.7 µg/m³, 1.0× usual Mollet del Vallès, 23 August: 13.3 µg/m³, 1.2× usual Mollet del Vallès, 24 August: 13.8 µg/m³, 1.2× usual Mollet del Vallès, 25 August: 20.0 µg/m³, 1.8× usual Lleida Lleida, 11 August: 25.9 µg/m³, 2.8× usual Lleida, 12 August: 25.0 µg/m³, 2.7× usual Lleida, 13 August: 20.3 µg/m³, 2.2× usual Lleida, 14 August: 19.3 µg/m³, 2.1× usual Lleida, 15 August: 17.8 µg/m³, 2.0× usual Lleida, 16 August: 23.5 µg/m³, 2.6× usual Lleida, 17 August: 31.1 µg/m³, 3.4× usual Lleida, 18 August: 33.0 µg/m³, 3.6× usual Lleida, 19 August: 13.5 µg/m³, 1.5× usual Lleida, 20 August: 10.5 µg/m³, 1.2× usual Lleida, 21 August: 6.3 µg/m³, 0.7× usual Lleida, 22 August: 7.5 µg/m³, 0.8× usual Lleida, 23 August: 8.0 µg/m³, 0.9× usual Lleida, 24 August: 13.5 µg/m³, 1.5× usual Lleida, 25 August: 17.6 µg/m³, 1.9× usual Jumilla Jumilla, 11 August: 25.0 µg/m³, 2.2× usual Jumilla, 12 August: 28.5 µg/m³, 2.5× usual Jumilla, 13 August: 21.7 µg/m³, 1.9× usual Jumilla, 14 August: 23.4 µg/m³, 2.1× usual Jumilla, 15 August: 26.1 µg/m³, 2.3× usual Jumilla, 16 August: 26.9 µg/m³, 2.4× usual Jumilla, 17 August: 35.7 µg/m³, 3.2× usual Jumilla, 18 August: 24.6 µg/m³, 2.2× usual Jumilla, 19 August: 20.3 µg/m³, 1.8× usual Jumilla, 20 August: 51.9 µg/m³, 4.6× usual Jumilla, 21 August: 25.2 µg/m³, 2.2× usual Jumilla, 22 August: 22.8 µg/m³, 2.0× usual Jumilla, 23 August: 16.2 µg/m³, 1.4× usual Jumilla, 24 August: 11.1 µg/m³, 1.0× usual Jumilla, 25 August: 18.4 µg/m³, 1.6× usual Móstoles Móstoles, 11 August: 17.5 µg/m³, 1.4× usual Móstoles, 12 August: 41.2 µg/m³, 3.3× usual Móstoles, 13 August: no reading Móstoles, 14 August: 18.2 µg/m³, 1.4× usual Móstoles, 15 August: 22.0 µg/m³, 1.7× usual Móstoles, 16 August: 27.1 µg/m³, 2.2× usual Móstoles, 17 August: no reading Móstoles, 18 August: no reading Móstoles, 19 August: 69.4 µg/m³, 5.5× usual Móstoles, 20 August: 43.1 µg/m³, 3.4× usual Móstoles, 21 August: 19.6 µg/m³, 1.6× usual Móstoles, 22 August: 18.8 µg/m³, 1.5× usual Móstoles, 23 August: 16.7 µg/m³, 1.3× usual Móstoles, 24 August: 21.1 µg/m³, 1.7× usual Móstoles, 25 August: 15.9 µg/m³, 1.3× usual Ourense Ourense, 11 August: 21.1 µg/m³, 1.6× usual Ourense, 12 August: 20.9 µg/m³, 1.6× usual Ourense, 13 August: 27.1 µg/m³, 2.1× usual Ourense, 14 August: 26.3 µg/m³, 2.0× usual Ourense, 15 August: 51.2 µg/m³, 3.9× usual Ourense, 16 August: 42.6 µg/m³, 3.3× usual Ourense, 17 August: 40.0 µg/m³, 3.1× usual Ourense, 18 August: 24.3 µg/m³, 1.9× usual Ourense, 19 August: 18.3 µg/m³, 1.4× usual Ourense, 20 August: 16.8 µg/m³, 1.3× usual Ourense, 21 August: 15.6 µg/m³, 1.2× usual Ourense, 22 August: 30.4 µg/m³, 2.3× usual Ourense, 23 August: 39.6 µg/m³, 3.0× usual Ourense, 24 August: 24.2 µg/m³, 1.9× usual Ourense, 25 August: 22.5 µg/m³, 1.7× usual Vila Real Vila Real, 11 August: 17.4 µg/m³, 3.5× usual Vila Real, 12 August: 17.1 µg/m³, 3.4× usual Vila Real, 13 August: no reading Vila Real, 14 August: 26.1 µg/m³, 5.2× usual Vila Real, 15 August: 50.8 µg/m³, 10× usual Vila Real, 16 August: 27.8 µg/m³, 5.6× usual Vila Real, 17 August: no reading Vila Real, 18 August: no reading Vila Real, 19 August: no reading Vila Real, 20 August: no reading Vila Real, 21 August: 15.0 µg/m³, 3.0× usual Vila Real, 22 August: 9.7 µg/m³, 1.9× usual Vila Real, 23 August: 7.1 µg/m³, 1.4× usual Vila Real, 24 August: no reading Vila Real, 25 August: no reading Lalín Lalín, 11 August: 7.7 µg/m³, 1.5× usual Lalín, 12 August: 8.7 µg/m³, 1.7× usual Lalín, 13 August: 3.4 µg/m³, 0.7× usual Lalín, 14 August: 17.4 µg/m³, 3.5× usual Lalín, 15 August: 66.5 µg/m³, 13× usual Lalín, 16 August: 56.7 µg/m³, 11× usual Lalín, 17 August: 11.9 µg/m³, 2.4× usual Lalín, 18 August: 10.3 µg/m³, 2.1× usual Lalín, 19 August: 2.6 µg/m³, 0.5× usual Lalín, 20 August: 3.4 µg/m³, 0.7× usual Lalín, 21 August: 3.4 µg/m³, 0.7× usual Lalín, 22 August: 6.7 µg/m³, 1.3× usual Lalín, 23 August: 6.2 µg/m³, 1.2× usual Lalín, 24 August: 9.4 µg/m³, 1.9× usual Lalín, 25 August: 4.2 µg/m³, 0.8× usual Lugo Lugo, 11 August: 13.1 µg/m³, 2.6× usual Lugo, 12 August: 11.9 µg/m³, 2.4× usual Lugo, 13 August: 14.1 µg/m³, 2.8× usual Lugo, 14 August: 10.9 µg/m³, 2.2× usual Lugo, 15 August: 50.8 µg/m³, 10× usual Lugo, 16 August: 39.9 µg/m³, 8.0× usual Lugo, 17 August: 13.8 µg/m³, 2.8× usual Lugo, 18 August: 8.3 µg/m³, 1.7× usual Lugo, 19 August: 7.1 µg/m³, 1.4× usual Lugo, 20 August: 5.0 µg/m³, 1.0× usual Lugo, 21 August: 5.6 µg/m³, 1.1× usual Lugo, 22 August: 6.3 µg/m³, 1.3× usual Lugo, 23 August: 7.2 µg/m³, 1.4× usual Lugo, 24 August: 10.5 µg/m³, 2.1× usual Lugo, 25 August: 9.4 µg/m³, 1.9× usual Culleredo Culleredo, 11 August: 18.1 µg/m³, 3.3× usual Culleredo, 12 August: 11.0 µg/m³, 2.0× usual Culleredo, 13 August: 9.9 µg/m³, 1.8× usual Culleredo, 14 August: 12.6 µg/m³, 2.3× usual Culleredo, 15 August: 29.1 µg/m³, 5.3× usual Culleredo, 16 August: 14.6 µg/m³, 2.7× usual Culleredo, 17 August: 14.0 µg/m³, 2.5× usual Culleredo, 18 August: 10.6 µg/m³, 1.9× usual Culleredo, 19 August: 6.2 µg/m³, 1.1× usual Culleredo, 20 August: 5.9 µg/m³, 1.1× usual Culleredo, 21 August: 8.6 µg/m³, 1.6× usual Culleredo, 22 August: 7.2 µg/m³, 1.3× usual Culleredo, 23 August: 7.7 µg/m³, 1.4× usual Culleredo, 24 August: 12.7 µg/m³, 2.3× usual Culleredo, 25 August: 8.3 µg/m³, 1.5× usual Narón Narón, 11 August: 10.1 µg/m³, 2.0× usual Narón, 12 August: 8.8 µg/m³, 1.8× usual Narón, 13 August: 5.4 µg/m³, 1.1× usual Narón, 14 August: 8.1 µg/m³, 1.6× usual Narón, 15 August: 26.0 µg/m³, 5.2× usual Narón, 16 August: 10.6 µg/m³, 2.1× usual Narón, 17 August: no reading Narón, 18 August: 7.4 µg/m³, 1.5× usual Narón, 19 August: no reading Narón, 20 August: no reading Narón, 21 August: no reading Narón, 22 August: no reading Narón, 23 August: 4.9 µg/m³, 1.0× usual Narón, 24 August: 7.0 µg/m³, 1.4× usual Narón, 25 August: 4.6 µg/m³, 0.9× usual Avilés Avilés, 11 August: no reading Avilés, 12 August: 20.2 µg/m³, 3.2× usual Avilés, 13 August: 15.4 µg/m³, 2.4× usual Avilés, 14 August: 15.9 µg/m³, 2.5× usual Avilés, 15 August: 25.5 µg/m³, 4.0× usual Avilés, 16 August: 28.0 µg/m³, 4.4× usual Avilés, 17 August: 27.3 µg/m³, 4.3× usual Avilés, 18 August: 15.3 µg/m³, 2.4× usual Avilés, 19 August: 8.1 µg/m³, 1.3× usual Avilés, 20 August: 8.0 µg/m³, 1.3× usual Avilés, 21 August: no reading Avilés, 22 August: 10.1 µg/m³, 1.6× usual Avilés, 23 August: no reading Avilés, 24 August: no reading Avilés, 25 August: 13.2 µg/m³, 2.1× usual Medina del Campo Medina del Campo, 11 August: 24.0 µg/m³, 2.8× usual Medina del Campo, 12 August: 16.4 µg/m³, 1.9× usual Medina del Campo, 13 August: 17.6 µg/m³, 2.1× usual Medina del Campo, 14 August: 19.4 µg/m³, 2.3× usual Medina del Campo, 15 August: 19.0 µg/m³, 2.2× usual Medina del Campo, 16 August: 27.9 µg/m³, 3.3× usual Medina del Campo, 17 August: 37.0 µg/m³, 4.4× usual Medina del Campo, 18 August: 73.5 µg/m³, 8.6× usual Medina del Campo, 19 August: 34.7 µg/m³, 4.1× usual Medina del Campo, 20 August: 9.4 µg/m³, 1.1× usual Medina del Campo, 21 August: 11.3 µg/m³, 1.3× usual Medina del Campo, 22 August: 7.9 µg/m³, 0.9× usual Medina del Campo, 23 August: 11.5 µg/m³, 1.4× usual Medina del Campo, 24 August: 21.3 µg/m³, 2.5× usual Medina del Campo, 25 August: 15.9 µg/m³, 1.9× usual Palencia Palencia, 11 August: 23.6 µg/m³, 2.5× usual Palencia, 12 August: 24.3 µg/m³, 2.6× usual Palencia, 13 August: 19.0 µg/m³, 2.0× usual Palencia, 14 August: 16.4 µg/m³, 1.7× usual Palencia, 15 August: 20.0 µg/m³, 2.1× usual Palencia, 16 August: 27.5 µg/m³, 2.9× usual Palencia, 17 August: 27.8 µg/m³, 3.0× usual Palencia, 18 August: 44.7 µg/m³, 4.8× usual Palencia, 19 August: 16.8 µg/m³, 1.8× usual Palencia, 20 August: 10.0 µg/m³, 1.1× usual Palencia, 21 August: no reading Palencia, 22 August: 10.2 µg/m³, 1.1× usual Palencia, 23 August: 11.6 µg/m³, 1.2× usual Palencia, 24 August: 15.3 µg/m³, 1.6× usual Palencia, 25 August: 18.7 µg/m³, 2.0× usual Pamplona Pamplona, 11 August: 19.2 µg/m³, 3.8× usual Pamplona, 12 August: 19.6 µg/m³, 3.9× usual Pamplona, 13 August: 15.4 µg/m³, 3.1× usual Pamplona, 14 August: 17.1 µg/m³, 3.4× usual Pamplona, 15 August: 21.0 µg/m³, 4.2× usual Pamplona, 16 August: 27.0 µg/m³, 5.4× usual Pamplona, 17 August: 19.4 µg/m³, 3.9× usual Pamplona, 18 August: 6.1 µg/m³, 1.2× usual Pamplona, 19 August: 8.0 µg/m³, 1.6× usual Pamplona, 20 August: 4.8 µg/m³, 1.0× usual Pamplona, 21 August: 6.7 µg/m³, 1.3× usual Pamplona, 22 August: 5.3 µg/m³, 1.1× usual Pamplona, 23 August: 6.2 µg/m³, 1.2× usual Pamplona, 24 August: 9.4 µg/m³, 1.9× usual Pamplona, 25 August: 14.5 µg/m³, 2.9× usual Soria Soria, 11 August: 18.1 µg/m³, 2.4× usual Soria, 12 August: 16.1 µg/m³, 2.1× usual Soria, 13 August: 13.6 µg/m³, 1.8× usual Soria, 14 August: 14.1 µg/m³, 1.9× usual Soria, 15 August: 18.5 µg/m³, 2.5× usual Soria, 16 August: 26.3 µg/m³, 3.5× usual Soria, 17 August: 30.9 µg/m³, 4.1× usual Soria, 18 August: 25.7 µg/m³, 3.4× usual Soria, 19 August: 17.8 µg/m³, 2.4× usual Soria, 20 August: 11.5 µg/m³, 1.5× usual Soria, 21 August: 6.0 µg/m³, 0.8× usual Soria, 22 August: 5.8 µg/m³, 0.8× usual Soria, 23 August: 7.1 µg/m³, 0.9× usual Soria, 24 August: 12.1 µg/m³, 1.6× usual Soria, 25 August: 16.1 µg/m³, 2.1× usual Aranda de Duero Aranda de Duero, 11 August: 17.1 µg/m³, 1.9× usual Aranda de Duero, 12 August: 14.9 µg/m³, 1.7× usual Aranda de Duero, 13 August: 14.4 µg/m³, 1.6× usual Aranda de Duero, 14 August: 14.1 µg/m³, 1.6× usual Aranda de Duero, 15 August: 17.6 µg/m³, 2.0× usual Aranda de Duero, 16 August: 25.3 µg/m³, 2.8× usual Aranda de Duero, 17 August: 26.5 µg/m³, 3.0× usual Aranda de Duero, 18 August: 47.3 µg/m³, 5.3× usual Aranda de Duero, 19 August: 22.8 µg/m³, 2.6× usual Aranda de Duero, 20 August: 15.1 µg/m³, 1.7× usual Aranda de Duero, 21 August: 6.7 µg/m³, 0.8× usual Aranda de Duero, 22 August: 6.4 µg/m³, 0.7× usual Aranda de Duero, 23 August: 9.1 µg/m³, 1.0× usual Aranda de Duero, 24 August: 14.9 µg/m³, 1.7× usual Aranda de Duero, 25 August: 12.6 µg/m³, 1.4× usual Salamanca Salamanca, 11 August: 22.0 µg/m³, 3.7× usual Salamanca, 12 August: 13.0 µg/m³, 2.2× usual Salamanca, 13 August: 16.3 µg/m³, 2.8× usual Salamanca, 14 August: 14.4 µg/m³, 2.4× usual Salamanca, 15 August: 16.4 µg/m³, 2.8× usual Salamanca, 16 August: 22.6 µg/m³, 3.8× usual Salamanca, 17 August: 36.3 µg/m³, 6.2× usual Salamanca, 18 August: 38.8 µg/m³, 6.6× usual Salamanca, 19 August: 31.9 µg/m³, 5.4× usual Salamanca, 20 August: 21.1 µg/m³, 3.6× usual Salamanca, 21 August: 19.0 µg/m³, 3.2× usual Salamanca, 22 August: 8.9 µg/m³, 1.5× usual Salamanca, 23 August: 10.1 µg/m³, 1.7× usual Salamanca, 24 August: 14.6 µg/m³, 2.5× usual Salamanca, 25 August: 11.1 µg/m³, 1.9× usual les Escaldes les Escaldes, 11 August: 16.2 µg/m³, 1.8× usual les Escaldes, 12 August: 16.9 µg/m³, 1.8× usual les Escaldes, 13 August: 17.0 µg/m³, 1.8× usual les Escaldes, 14 August: 14.6 µg/m³, 1.6× usual les Escaldes, 15 August: 19.9 µg/m³, 2.2× usual les Escaldes, 16 August: 19.7 µg/m³, 2.1× usual les Escaldes, 17 August: 32.5 µg/m³, 3.5× usual les Escaldes, 18 August: 33.4 µg/m³, 3.6× usual les Escaldes, 19 August: 10.1 µg/m³, 1.1× usual les Escaldes, 20 August: 10.3 µg/m³, 1.1× usual les Escaldes, 21 August: 4.8 µg/m³, 0.5× usual les Escaldes, 22 August: 5.2 µg/m³, 0.6× usual les Escaldes, 23 August: 7.8 µg/m³, 0.8× usual les Escaldes, 24 August: 10.2 µg/m³, 1.1× usual les Escaldes, 25 August: 16.7 µg/m³, 1.8× usual Burgos Burgos, 11 August: 19.5 µg/m³, 2.7× usual Burgos, 12 August: 21.2 µg/m³, 2.9× usual Burgos, 13 August: 14.2 µg/m³, 1.9× usual Burgos, 14 August: 16.7 µg/m³, 2.3× usual Burgos, 15 August: 16.3 µg/m³, 2.2× usual Burgos, 16 August: 24.0 µg/m³, 3.3× usual Burgos, 17 August: 28.3 µg/m³, 3.9× usual Burgos, 18 August: 20.2 µg/m³, 2.8× usual Burgos, 19 August: 93.5 µg/m³, 13× usual Burgos, 20 August: 4.9 µg/m³, 0.7× usual Burgos, 21 August: 4.4 µg/m³, 0.6× usual Burgos, 22 August: 5.8 µg/m³, 0.8× usual Burgos, 23 August: 9.0 µg/m³, 1.2× usual Burgos, 24 August: 12.8 µg/m³, 1.8× usual Burgos, 25 August: 16.0 µg/m³, 2.2× usual Zaragoza Zaragoza, 11 August: 20.4 µg/m³, 2.2× usual Zaragoza, 12 August: 19.2 µg/m³, 2.1× usual Zaragoza, 13 August: 14.7 µg/m³, 1.6× usual Zaragoza, 14 August: 14.4 µg/m³, 1.6× usual Zaragoza, 15 August: 14.9 µg/m³, 1.6× usual Zaragoza, 16 August: 21.8 µg/m³, 2.4× usual Zaragoza, 17 August: 27.8 µg/m³, 3.1× usual Zaragoza, 18 August: 17.2 µg/m³, 1.9× usual Zaragoza, 19 August: 8.1 µg/m³, 0.9× usual Zaragoza, 20 August: 5.9 µg/m³, 0.6× usual Zaragoza, 21 August: 6.9 µg/m³, 0.8× usual Zaragoza, 22 August: 5.6 µg/m³, 0.6× usual Zaragoza, 23 August: 7.9 µg/m³, 0.9× usual Zaragoza, 24 August: 13.2 µg/m³, 1.5× usual Zaragoza, 25 August: 11.4 µg/m³, 1.3× usual Collado-Villalba Collado-Villalba, 11 August: 7.4 µg/m³, 0.8× usual Collado-Villalba, 12 August: 10.4 µg/m³, 1.2× usual Collado-Villalba, 13 August: 6.4 µg/m³, 0.7× usual Collado-Villalba, 14 August: 8.5 µg/m³, 0.9× usual Collado-Villalba, 15 August: 10.4 µg/m³, 1.2× usual Collado-Villalba, 16 August: 13.6 µg/m³, 1.5× usual Collado-Villalba, 17 August: 20.9 µg/m³, 2.3× usual Collado-Villalba, 18 August: 43.6 µg/m³, 4.8× usual Collado-Villalba, 19 August: 49.3 µg/m³, 5.5× usual Collado-Villalba, 20 August: 32.1 µg/m³, 3.6× usual Collado-Villalba, 21 August: 10.8 µg/m³, 1.2× usual Collado-Villalba, 22 August: 6.7 µg/m³, 0.7× usual Collado-Villalba, 23 August: 7.8 µg/m³, 0.9× usual Collado-Villalba, 24 August: 10.0 µg/m³, 1.1× usual Collado-Villalba, 25 August: 4.6 µg/m³, 0.5× usual Madrid Madrid, 11 August: 16.2 µg/m³, 1.6× usual Madrid, 12 August: 24.5 µg/m³, 2.4× usual Madrid, 13 August: 15.8 µg/m³, 1.5× usual Madrid, 14 August: 16.6 µg/m³, 1.6× usual Madrid, 15 August: 16.3 µg/m³, 1.6× usual Madrid, 16 August: 19.8 µg/m³, 1.9× usual Madrid, 17 August: 22.5 µg/m³, 2.2× usual Madrid, 18 August: 33.4 µg/m³, 3.3× usual Madrid, 19 August: 47.3 µg/m³, 4.6× usual Madrid, 20 August: 28.3 µg/m³, 2.8× usual Madrid, 21 August: 14.0 µg/m³, 1.4× usual Madrid, 22 August: 10.6 µg/m³, 1.0× usual Madrid, 23 August: 13.3 µg/m³, 1.3× usual Madrid, 24 August: 16.4 µg/m³, 1.6× usual Madrid, 25 August: 13.1 µg/m³, 1.3× usual Valdemoro Valdemoro, 11 August: 20.5 µg/m³, 1.5× usual Valdemoro, 12 August: 22.3 µg/m³, 1.6× usual Valdemoro, 13 August: 15.8 µg/m³, 1.2× usual Valdemoro, 14 August: 17.6 µg/m³, 1.3× usual Valdemoro, 15 August: 18.9 µg/m³, 1.4× usual Valdemoro, 16 August: 23.4 µg/m³, 1.7× usual Valdemoro, 17 August: 25.9 µg/m³, 1.9× usual Valdemoro, 18 August: 31.6 µg/m³, 2.3× usual Valdemoro, 19 August: 67.5 µg/m³, 4.9× usual Valdemoro, 20 August: 40.4 µg/m³, 2.9× usual Valdemoro, 21 August: 16.9 µg/m³, 1.2× usual Valdemoro, 22 August: 14.5 µg/m³, 1.1× usual Valdemoro, 23 August: 17.5 µg/m³, 1.3× usual Valdemoro, 24 August: 15.4 µg/m³, 1.1× usual Valdemoro, 25 August: 14.4 µg/m³, 1.1× usual Valencia Valencia, 11 August: 22.5 µg/m³, 2.5× usual Valencia, 12 August: 21.4 µg/m³, 2.4× usual Valencia, 13 August: 20.0 µg/m³, 2.2× usual Valencia, 14 August: 16.8 µg/m³, 1.8× usual Valencia, 15 August: 18.3 µg/m³, 2.0× usual Valencia, 16 August: 19.4 µg/m³, 2.1× usual Valencia, 17 August: 24.3 µg/m³, 2.7× usual Valencia, 18 August: 27.3 µg/m³, 3.0× usual Valencia, 19 August: 20.2 µg/m³, 2.2× usual Valencia, 20 August: 18.9 µg/m³, 2.1× usual Valencia, 21 August: 15.6 µg/m³, 1.7× usual Valencia, 22 August: 10.8 µg/m³, 1.2× usual Valencia, 23 August: 11.8 µg/m³, 1.3× usual Valencia, 24 August: 13.8 µg/m³, 1.5× usual Valencia, 25 August: 16.2 µg/m³, 1.8× usual Sevilla Sevilla, 11 August: 20.7 µg/m³, 1.6× usual Sevilla, 12 August: 19.7 µg/m³, 1.5× usual Sevilla, 13 August: no reading Sevilla, 14 August: 17.7 µg/m³, 1.4× usual Sevilla, 15 August: 16.8 µg/m³, 1.3× usual Sevilla, 16 August: no reading Sevilla, 17 August: no reading Sevilla, 18 August: 27.1 µg/m³, 2.1× usual Sevilla, 19 August: 17.9 µg/m³, 1.4× usual Sevilla, 20 August: no reading Sevilla, 21 August: 17.9 µg/m³, 1.4× usual Sevilla, 22 August: 16.1 µg/m³, 1.2× usual Sevilla, 23 August: 15.3 µg/m³, 1.2× usual Sevilla, 24 August: no reading Sevilla, 25 August: 22.0 µg/m³, 1.7× usual Torrejón de Ardoz Torrejón de Ardoz, 11 August: 15.1 µg/m³, 1.5× usual Torrejón de Ardoz, 12 August: 13.0 µg/m³, 1.3× usual Torrejón de Ardoz, 13 August: 14.0 µg/m³, 1.4× usual Torrejón de Ardoz, 14 August: 12.3 µg/m³, 1.2× usual Torrejón de Ardoz, 15 August: 12.9 µg/m³, 1.3× usual Torrejón de Ardoz, 16 August: 16.7 µg/m³, 1.6× usual Torrejón de Ardoz, 17 August: 18.1 µg/m³, 1.8× usual Torrejón de Ardoz, 18 August: 26.8 µg/m³, 2.6× usual Torrejón de Ardoz, 19 August: 43.6 µg/m³, 4.2× usual Torrejón de Ardoz, 20 August: 21.1 µg/m³, 2.0× usual Torrejón de Ardoz, 21 August: 9.3 µg/m³, 0.9× usual Torrejón de Ardoz, 22 August: 9.1 µg/m³, 0.9× usual Torrejón de Ardoz, 23 August: 11.4 µg/m³, 1.1× usual Torrejón de Ardoz, 24 August: 12.4 µg/m³, 1.2× usual Torrejón de Ardoz, 25 August: 12.9 µg/m³, 1.3× usual Manzanares Manzanares, 11 August: 17.5 µg/m³, 1.8× usual Manzanares, 12 August: 19.5 µg/m³, 2.0× usual Manzanares, 13 August: 13.6 µg/m³, 1.4× usual Manzanares, 14 August: 14.0 µg/m³, 1.4× usual Manzanares, 15 August: 18.7 µg/m³, 1.9× usual Manzanares, 16 August: 17.6 µg/m³, 1.8× usual Manzanares, 17 August: 22.2 µg/m³, 2.2× usual Manzanares, 18 August: 26.7 µg/m³, 2.7× usual Manzanares, 19 August: 69.1 µg/m³, 7.0× usual Manzanares, 20 August: 64.5 µg/m³, 6.5× usual Manzanares, 21 August: 39.7 µg/m³, 4.0× usual Manzanares, 22 August: 31.6 µg/m³, 3.2× usual Manzanares, 23 August: 23.1 µg/m³, 2.3× usual Manzanares, 24 August: 11.7 µg/m³, 1.2× usual Manzanares, 25 August: 16.5 µg/m³, 1.7× usual Coslada Coslada, 11 August: 17.5 µg/m³, 1.5× usual Coslada, 12 August: 14.7 µg/m³, 1.3× usual Coslada, 13 August: 13.3 µg/m³, 1.2× usual Coslada, 14 August: 13.8 µg/m³, 1.2× usual Coslada, 15 August: 14.0 µg/m³, 1.2× usual Coslada, 16 August: 18.7 µg/m³, 1.7× usual Coslada, 17 August: 17.8 µg/m³, 1.6× usual Coslada, 18 August: 26.6 µg/m³, 2.4× usual Coslada, 19 August: 44.2 µg/m³, 3.9× usual Coslada, 20 August: 22.9 µg/m³, 2.0× usual Coslada, 21 August: 13.3 µg/m³, 1.2× usual Coslada, 22 August: 8.3 µg/m³, 0.7× usual Coslada, 23 August: 11.5 µg/m³, 1.0× usual Coslada, 24 August: 15.3 µg/m³, 1.4× usual Coslada, 25 August: 12.6 µg/m³, 1.1× usual Alcantarilla Alcantarilla, 11 August: 15.2 µg/m³, 1.3× usual Alcantarilla, 12 August: 21.5 µg/m³, 1.8× usual Alcantarilla, 13 August: 14.7 µg/m³, 1.2× usual Alcantarilla, 14 August: 14.6 µg/m³, 1.2× usual Alcantarilla, 15 August: 14.9 µg/m³, 1.3× usual Alcantarilla, 16 August: 17.1 µg/m³, 1.4× usual Alcantarilla, 17 August: 17.1 µg/m³, 1.4× usual Alcantarilla, 18 August: 25.1 µg/m³, 2.1× usual Alcantarilla, 19 August: 21.7 µg/m³, 1.8× usual Alcantarilla, 20 August: 47.6 µg/m³, 4.0× usual Alcantarilla, 21 August: 23.1 µg/m³, 2.0× usual Alcantarilla, 22 August: 27.8 µg/m³, 2.4× usual Alcantarilla, 23 August: 13.6 µg/m³, 1.2× usual Alcantarilla, 24 August: 13.3 µg/m³, 1.1× usual Alcantarilla, 25 August: 18.8 µg/m³, 1.6× usual Algete Algete, 11 August: 12.1 µg/m³, 1.4× usual Algete, 12 August: 11.7 µg/m³, 1.3× usual Algete, 13 August: 12.3 µg/m³, 1.4× usual Algete, 14 August: 12.0 µg/m³, 1.4× usual Algete, 15 August: 13.5 µg/m³, 1.6× usual Algete, 16 August: 14.9 µg/m³, 1.7× usual Algete, 17 August: 18.1 µg/m³, 2.1× usual Algete, 18 August: 25.0 µg/m³, 2.9× usual Algete, 19 August: 39.7 µg/m³, 4.6× usual Algete, 20 August: 26.3 µg/m³, 3.0× usual Algete, 21 August: 10.6 µg/m³, 1.2× usual Algete, 22 August: 7.5 µg/m³, 0.9× usual Algete, 23 August: 9.6 µg/m³, 1.1× usual Algete, 24 August: 12.8 µg/m³, 1.5× usual Algete, 25 August: 10.7 µg/m³, 1.2× usual Córdoba Córdoba, 11 August: 15.3 µg/m³, 1.6× usual Córdoba, 12 August: 14.8 µg/m³, 1.5× usual Córdoba, 13 August: no reading Córdoba, 14 August: 12.2 µg/m³, 1.3× usual Córdoba, 15 August: 12.3 µg/m³, 1.3× usual Córdoba, 16 August: no reading Córdoba, 17 August: 15.9 µg/m³, 1.7× usual Córdoba, 18 August: 20.6 µg/m³, 2.1× usual Córdoba, 19 August: 28.8 µg/m³, 3.0× usual Córdoba, 20 August: 21.0 µg/m³, 2.2× usual Córdoba, 21 August: 23.6 µg/m³, 2.5× usual Córdoba, 22 August: 17.3 µg/m³, 1.8× usual Córdoba, 23 August: 14.0 µg/m³, 1.5× usual Córdoba, 24 August: no reading Córdoba, 25 August: 13.9 µg/m³, 1.4× usual Bailén Bailén, 11 August: 17.5 µg/m³, 1.7× usual Bailén, 12 August: 16.5 µg/m³, 1.6× usual Bailén, 13 August: no reading Bailén, 14 August: 12.5 µg/m³, 1.2× usual Bailén, 15 August: 15.4 µg/m³, 1.5× usual Bailén, 16 August: no reading Bailén, 17 August: no reading Bailén, 18 August: 16.6 µg/m³, 1.6× usual Bailén, 19 August: 28.0 µg/m³, 2.6× usual Bailén, 20 August: no reading Bailén, 21 August: 31.2 µg/m³, 2.9× usual Bailén, 22 August: 28.1 µg/m³, 2.7× usual Bailén, 23 August: 19.8 µg/m³, 1.9× usual Bailén, 24 August: no reading Bailén, 25 August: 16.3 µg/m³, 1.5× usual Lorca Lorca, 11 August: 15.8 µg/m³, 1.5× usual Lorca, 12 August: 19.0 µg/m³, 1.8× usual Lorca, 13 August: 15.5 µg/m³, 1.4× usual Lorca, 14 August: 15.2 µg/m³, 1.4× usual Lorca, 15 August: 14.9 µg/m³, 1.4× usual Lorca, 16 August: 15.6 µg/m³, 1.4× usual Lorca, 17 August: 17.2 µg/m³, 1.6× usual Lorca, 18 August: 24.1 µg/m³, 2.2× usual Lorca, 19 August: 24.3 µg/m³, 2.3× usual Lorca, 20 August: 61.5 µg/m³, 5.7× usual Lorca, 21 August: 43.5 µg/m³, 4.0× usual Lorca, 22 August: 32.7 µg/m³, 3.0× usual Lorca, 23 August: 19.9 µg/m³, 1.8× usual Lorca, 24 August: 14.3 µg/m³, 1.3× usual Lorca, 25 August: 22.8 µg/m³, 2.1× usual Caravaca Caravaca, 11 August: 13.6 µg/m³, 1.5× usual Caravaca, 12 August: 15.6 µg/m³, 1.7× usual Caravaca, 13 August: 12.9 µg/m³, 1.4× usual Caravaca, 14 August: 11.3 µg/m³, 1.2× usual Caravaca, 15 August: 6.1 µg/m³, 0.7× usual Caravaca, 16 August: 12.0 µg/m³, 1.3× usual Caravaca, 17 August: 16.3 µg/m³, 1.8× usual Caravaca, 18 August: 16.5 µg/m³, 1.8× usual Caravaca, 19 August: 17.5 µg/m³, 1.9× usual Caravaca, 20 August: 52.3 µg/m³, 5.7× usual Caravaca, 21 August: 30.1 µg/m³, 3.3× usual Caravaca, 22 August: 25.6 µg/m³, 2.8× usual Caravaca, 23 August: 17.2 µg/m³, 1.9× usual Caravaca, 24 August: 9.8 µg/m³, 1.1× usual Caravaca, 25 August: 15.7 µg/m³, 1.7× usual Molina de Segura Molina de Segura, 11 August: 14.5 µg/m³, 1.3× usual Molina de Segura, 12 August: 20.9 µg/m³, 1.9× usual Molina de Segura, 13 August: 12.0 µg/m³, 1.1× usual Molina de Segura, 14 August: 13.0 µg/m³, 1.2× usual Molina de Segura, 15 August: 13.2 µg/m³, 1.2× usual Molina de Segura, 16 August: 16.0 µg/m³, 1.5× usual Molina de Segura, 17 August: 17.4 µg/m³, 1.6× usual Molina de Segura, 18 August: 20.6 µg/m³, 1.9× usual Molina de Segura, 19 August: 20.0 µg/m³, 1.8× usual Molina de Segura, 20 August: 41.3 µg/m³, 3.8× usual Molina de Segura, 21 August: 21.2 µg/m³, 1.9× usual Molina de Segura, 22 August: 29.1 µg/m³, 2.6× usual Molina de Segura, 23 August: 11.6 µg/m³, 1.1× usual Molina de Segura, 24 August: 12.3 µg/m³, 1.1× usual Molina de Segura, 25 August: 17.8 µg/m³, 1.6× usual Murcia Murcia, 11 August: 16.0 µg/m³, 1.4× usual Murcia, 12 August: 19.5 µg/m³, 1.7× usual Murcia, 13 August: 14.4 µg/m³, 1.2× usual Murcia, 14 August: 14.6 µg/m³, 1.3× usual Murcia, 15 August: 15.9 µg/m³, 1.4× usual Murcia, 16 August: 18.4 µg/m³, 1.6× usual Murcia, 17 August: 19.2 µg/m³, 1.7× usual Murcia, 18 August: 23.5 µg/m³, 2.0× usual Murcia, 19 August: 19.8 µg/m³, 1.7× usual Murcia, 20 August: 39.8 µg/m³, 3.4× usual Murcia, 21 August: 20.7 µg/m³, 1.8× usual Murcia, 22 August: 25.2 µg/m³, 2.2× usual Murcia, 23 August: 13.0 µg/m³, 1.1× usual Murcia, 24 August: 12.5 µg/m³, 1.1× usual Murcia, 25 August: 18.3 µg/m³, 1.6× usual Barrio de Peral Barrio de Peral, 11 August: 13.1 µg/m³, 1.1× usual Barrio de Peral, 12 August: 15.8 µg/m³, 1.4× usual Barrio de Peral, 13 August: 12.9 µg/m³, 1.1× usual Barrio de Peral, 14 August: 12.8 µg/m³, 1.1× usual Barrio de Peral, 15 August: 14.7 µg/m³, 1.3× usual Barrio de Peral, 16 August: 14.3 µg/m³, 1.2× usual Barrio de Peral, 17 August: 14.3 µg/m³, 1.2× usual Barrio de Peral, 18 August: 21.7 µg/m³, 1.9× usual Barrio de Peral, 19 August: 20.1 µg/m³, 1.7× usual Barrio de Peral, 20 August: 36.0 µg/m³, 3.1× usual Barrio de Peral, 21 August: 21.8 µg/m³, 1.9× usual Barrio de Peral, 22 August: 24.5 µg/m³, 2.1× usual Barrio de Peral, 23 August: 11.4 µg/m³, 1.0× usual Barrio de Peral, 24 August: 12.4 µg/m³, 1.1× usual Barrio de Peral, 25 August: 22.3 µg/m³, 1.9× usual Alcalá de Henares Alcalá de Henares, 11 August: 19.1 µg/m³, 1.7× usual Alcalá de Henares, 12 August: 15.8 µg/m³, 1.4× usual Alcalá de Henares, 13 August: 15.4 µg/m³, 1.4× usual Alcalá de Henares, 14 August: 13.9 µg/m³, 1.2× usual Alcalá de Henares, 15 August: 14.1 µg/m³, 1.3× usual Alcalá de Henares, 16 August: 17.1 µg/m³, 1.5× usual Alcalá de Henares, 17 August: 17.7 µg/m³, 1.6× usual Alcalá de Henares, 18 August: 24.8 µg/m³, 2.2× usual Alcalá de Henares, 19 August: no reading Alcalá de Henares, 20 August: 25.2 µg/m³, 2.3× usual Alcalá de Henares, 21 August: 11.6 µg/m³, 1.0× usual Alcalá de Henares, 22 August: 8.7 µg/m³, 0.8× usual Alcalá de Henares, 23 August: 11.3 µg/m³, 1.0× usual Alcalá de Henares, 24 August: 13.2 µg/m³, 1.2× usual Alcalá de Henares, 25 August: 13.9 µg/m³, 1.2× usual Jaén Jaén, 11 August: 24.5 µg/m³, 2.5× usual Jaén, 12 August: 22.2 µg/m³, 2.3× usual Jaén, 13 August: no reading Jaén, 14 August: 17.4 µg/m³, 1.8× usual Jaén, 15 August: 19.6 µg/m³, 2.0× usual Jaén, 16 August: no reading Jaén, 17 August: 21.6 µg/m³, 2.2× usual Jaén, 18 August: 24.9 µg/m³, 2.5× usual Jaén, 19 August: 23.9 µg/m³, 2.4× usual Jaén, 20 August: no reading Jaén, 21 August: 36.1 µg/m³, 3.7× usual Jaén, 22 August: 31.4 µg/m³, 3.2× usual Jaén, 23 August: 21.7 µg/m³, 2.2× usual Jaén, 24 August: no reading Jaén, 25 August: 22.6 µg/m³, 2.3× usual Granada Granada, 11 August: 13.0 µg/m³, 1.4× usual Granada, 12 August: 15.1 µg/m³, 1.6× usual Granada, 13 August: no reading Granada, 14 August: 13.2 µg/m³, 1.4× usual Granada, 15 August: 13.1 µg/m³, 1.4× usual Granada, 16 August: 13.2 µg/m³, 1.4× usual Granada, 17 August: 23.9 µg/m³, 2.5× usual Granada, 18 August: 15.2 µg/m³, 1.6× usual Granada, 19 August: 11.2 µg/m³, 1.2× usual Granada, 20 August: no reading Granada, 21 August: 28.9 µg/m³, 3.1× usual Granada, 22 August: 27.3 µg/m³, 2.9× usual Granada, 23 August: 11.8 µg/m³, 1.3× usual Granada, 24 August: no reading Granada, 25 August: 12.7 µg/m³, 1.4× usual 11 Aug 13 15 17 19 21 23 25 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
Ponferrada Castille and León, Spain 6 16 August 7.0 29× León Castille and León, Spain 5 17 August 5.9 21× Lalín Galicia, Spain 2 15 August 2.0 13× Burgos Castille and León, Spain 2 19 August 7.3 13× Vila Real Vila Real, Portugal 3 15 August 2.9 10× Lugo Galicia, Spain 2 15 August 4.1 10× Medina del Campo Castille and León, Spain 4 18 August 8.5 8.6× Manzanares Castille-La Mancha, Spain 5 19 August 9.9 7.0× Salamanca Castille and León, Spain 3 18 August 5.9 6.6× Caravaca Murcia, Spain 3 20 August 9.1 5.7× Lorca Murcia, Spain 3 20 August 10.8 5.7× Móstoles Madrid, Spain 3 19 August 12.6 5.5× Collado-Villalba Madrid, Spain 3 19 August 9.0 5.5× Pamplona Navarre, Spain 1 16 August 5.0 5.4× Aranda de Duero Castille and León, Spain 3 18 August 8.9 5.3× Culleredo Galicia, Spain 1 15 August 5.5 5.3× Narón Galicia, Spain 1 15 August 4.8 5.2× Valdemoro Madrid, Spain 3 19 August 13.7 4.9× Palencia Castille and León, Spain 3 18 August 9.4 4.8× Madrid Madrid, Spain 3 19 August 10.2 4.6× Jumilla Murcia, Spain 3 20 August 11.3 4.6× Algete Madrid, Spain 3 19 August 8.7 4.6× Fuenlabrada Madrid, Spain 3 19 August 13.6 4.5× Avilés Asturias, Spain 3 16 August 6.4 4.4× Torrejón de Ardoz Madrid, Spain 2 19 August 10.3 4.2× Soria Castille and León, Spain 3 17 August 7.5 4.1× Alcantarilla Murcia, Spain 3 20 August 11.8 4.0× Ourense Galicia, Spain 4 15 August 13.0 3.9× Coslada Madrid, Spain 2 19 August 11.3 3.9× Molina de Segura Murcia, Spain 2 20 August 11.0 3.8× Jaén Andalusia, Spain 2 21 August 9.8 3.7× les Escaldes Escaldes-Engordany, Andorra 2 18 August 9.2 3.6× Lleida Catalonia, Spain 2 18 August 9.1 3.6× Murcia Murcia, Spain 2 20 August 11.6 3.4× Barrio de Peral Murcia, Spain 1 20 August 11.5 3.1× Granada Andalusia, Spain 2 21 August 9.4 3.1× Zaragoza Aragon, Spain 1 17 August 9.1 3.1× Manlleu Catalonia, Spain 2 18 August 12.1 3.0× Valencia Valencia, Spain 1 18 August 9.1 3.0× Córdoba Andalusia, Spain 1 19 August 9.6 3.0× Bailén Andalusia, Spain 3 21 August 10.6 2.9× Mollet del Vallès Catalonia, Spain 1 11 August 11.4 2.3× Alcalá de Henares Madrid, Spain 1 20 August 11.2 2.3× Sevilla Andalusia, Spain 1 18 August 13.0 2.1×
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 Portugal
Number 3 of 21 episodes in Spain and Portugal since our records began, by cities reached.
North-eastern Spain and France, February 2023 72 Spain, France and Italy, December 2023 50 North-eastern Spain, August 2025 44 Canary Islands, Spain, November 2025 15 Canary Islands, Spain, December 2023 15 Canary Islands, Spain, December 2023 15 Andalusia and Madrid, Spain, July 2023 15 Canary Islands, Spain, April 2023 15 Canary Islands, Spain, February 2023 15 Canary Islands, Spain, February 2023 15 North-eastern Spain, August 2025 14 North-eastern Spain, November 2025 12 Bars: cities reached; colour: the level of the episode's highest daily reading. All 21 .
Use this page SmogRank, North-eastern Spain, August 2025: 44 cities with PM2.5 at twice their usual or more, 14 to 22 August 2025, smogrank.com/episodes/2025-08-north-eastern-spain-2 (accessed 2 October 2026).
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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.
