SmogRank / Episodes / Spain
North-eastern Spain, October 2024
For 2 days, from 30 to 31 October 2024, 23 cities in Spain had PM2.5 at least twice their usual for the time of year. The worst reading was Alcalá de Henares, Madrid, Spain: 47.8 µg/m³ on 31 October, about 6.8× 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 23 in 1 country
Days 2 30 to 31 October 2024
Worst day 31 October 20 cities counted
Furthest above usual 7.4× Madrid
Day by day
Play 31 October 20 cities at twice their usual or more
Toledo Ciudad Real Salamanca Palencia Bailén Córdoba Burgos Jaén Granada Sevilla Gasteiz / Vitoria Vila Real Tudela Huelva Zaragoza Elda Ourense Onda Lugo Sagunto Torrevieja Alicante Burriana Ponte de Lima Castelló de la Plana Lalín Benicàssim Pontevedra Santiago de Compostela Lleida Xàtiva Vigo Collado-Villalba Murcia Cartagena Valdemoro Cuenca Valencia Molina de Segura León Grao de Murviedro Lorca Fuenlabrada Villena Valladolid Barrio de Peral Torrejón de Ardoz Medina del Campo Coslada Alcalá de Henares Algete Móstoles Madrid 27 Oct 28 29 30 31 1 Nov 2 3 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
Cartagena Cartagena, 27 October: no reading Cartagena, 28 October: 6.5 µg/m³, 0.7× usual Cartagena, 29 October: 28.8 µg/m³, 3.3× usual Cartagena, 30 October: 12.8 µg/m³, 1.5× usual Cartagena, 31 October: 34.7 µg/m³, 4.0× usual Cartagena, 1 November: 18.7 µg/m³, 2.1× usual Cartagena, 2 November: 9.2 µg/m³, 1.1× usual Cartagena, 3 November: 8.9 µg/m³, 1.0× usual Cuenca Cuenca, 27 October: 4.2 µg/m³, 0.4× usual Cuenca, 28 October: 5.0 µg/m³, 0.5× usual Cuenca, 29 October: no reading Cuenca, 30 October: 44.4 µg/m³, 4.4× usual Cuenca, 31 October: 33.8 µg/m³, 3.4× usual Cuenca, 1 November: 10.2 µg/m³, 1.0× usual Cuenca, 2 November: 8.4 µg/m³, 0.8× usual Cuenca, 3 November: 7.9 µg/m³, 0.8× usual Alcalá de Henares Alcalá de Henares, 27 October: 5.9 µg/m³, 0.8× usual Alcalá de Henares, 28 October: 5.5 µg/m³, 0.8× usual Alcalá de Henares, 29 October: 6.3 µg/m³, 0.9× usual Alcalá de Henares, 30 October: 36.4 µg/m³, 5.2× usual Alcalá de Henares, 31 October: 47.8 µg/m³, 6.8× usual Alcalá de Henares, 1 November: 13.4 µg/m³, 1.9× usual Alcalá de Henares, 2 November: 8.5 µg/m³, 1.2× usual Alcalá de Henares, 3 November: 10.1 µg/m³, 1.4× usual Xàtiva Xàtiva, 27 October: 4.2 µg/m³, 0.4× usual Xàtiva, 28 October: 4.8 µg/m³, 0.5× usual Xàtiva, 29 October: 9.3 µg/m³, 1.0× usual Xàtiva, 30 October: 31.2 µg/m³, 3.3× usual Xàtiva, 31 October: 19.1 µg/m³, 2.0× usual Xàtiva, 1 November: 7.4 µg/m³, 0.8× usual Xàtiva, 2 November: 6.7 µg/m³, 0.7× usual Xàtiva, 3 November: 7.6 µg/m³, 0.8× usual Villena Villena, 27 October: 3.0 µg/m³, 0.5× usual Villena, 28 October: 3.8 µg/m³, 0.6× usual Villena, 29 October: 12.5 µg/m³, 2.1× usual Villena, 30 October: 31.0 µg/m³, 5.3× usual Villena, 31 October: 23.9 µg/m³, 4.1× usual Villena, 1 November: 6.9 µg/m³, 1.2× usual Villena, 2 November: 5.8 µg/m³, 1.0× usual Villena, 3 November: 5.7 µg/m³, 1.0× usual Collado-Villalba Collado-Villalba, 27 October: 5.2 µg/m³, 0.5× usual Collado-Villalba, 28 October: 1.9 µg/m³, 0.2× usual Collado-Villalba, 29 October: 5.3 µg/m³, 0.6× usual Collado-Villalba, 30 October: 30.1 µg/m³, 3.1× usual Collado-Villalba, 31 October: 35.2 µg/m³, 3.7× usual Collado-Villalba, 1 November: 12.1 µg/m³, 1.3× usual Collado-Villalba, 2 November: 8.7 µg/m³, 0.9× usual Collado-Villalba, 3 November: 11.5 µg/m³, 1.2× usual Lorca Lorca, 27 October: no reading Lorca, 28 October: 4.4 µg/m³, 0.6× usual Lorca, 29 October: 20.6 µg/m³, 2.9× usual Lorca, 30 October: 28.9 µg/m³, 4.1× usual Lorca, 31 October: 36.9 µg/m³, 5.2× usual Lorca, 1 November: 26.8 µg/m³, 3.8× usual Lorca, 2 November: 13.2 µg/m³, 1.9× usual Lorca, 3 November: 10.6 µg/m³, 1.5× usual Torrejón de Ardoz Torrejón de Ardoz, 27 October: 5.4 µg/m³, 0.7× usual Torrejón de Ardoz, 28 October: 7.3 µg/m³, 0.9× usual Torrejón de Ardoz, 29 October: 4.5 µg/m³, 0.6× usual Torrejón de Ardoz, 30 October: 27.7 µg/m³, 3.5× usual Torrejón de Ardoz, 31 October: 43.9 µg/m³, 5.5× usual Torrejón de Ardoz, 1 November: 13.7 µg/m³, 1.7× usual Torrejón de Ardoz, 2 November: 6.8 µg/m³, 0.9× usual Torrejón de Ardoz, 3 November: 8.1 µg/m³, 1.0× usual Medina del Campo Medina del Campo, 27 October: 3.0 µg/m³, 0.6× usual Medina del Campo, 28 October: 2.1 µg/m³, 0.4× usual Medina del Campo, 29 October: 4.5 µg/m³, 0.9× usual Medina del Campo, 30 October: 27.5 µg/m³, 5.5× usual Medina del Campo, 31 October: 29.9 µg/m³, 6.0× usual Medina del Campo, 1 November: 9.5 µg/m³, 1.9× usual Medina del Campo, 2 November: 7.4 µg/m³, 1.5× usual Medina del Campo, 3 November: 6.1 µg/m³, 1.2× usual Móstoles Móstoles, 27 October: 6.1 µg/m³, 1.1× usual Móstoles, 28 October: 3.1 µg/m³, 0.5× usual Móstoles, 29 October: 5.7 µg/m³, 1.0× usual Móstoles, 30 October: 26.8 µg/m³, 4.6× usual Móstoles, 31 October: 41.5 µg/m³, 7.2× usual Móstoles, 1 November: 14.0 µg/m³, 2.4× usual Móstoles, 2 November: 8.7 µg/m³, 1.5× usual Móstoles, 3 November: 8.5 µg/m³, 1.5× usual Grao de Murviedro Grao de Murviedro, 27 October: 1.6 µg/m³, 0.3× usual Grao de Murviedro, 28 October: 3.8 µg/m³, 0.8× usual Grao de Murviedro, 29 October: 11.4 µg/m³, 2.3× usual Grao de Murviedro, 30 October: 25.9 µg/m³, 5.2× usual Grao de Murviedro, 31 October: 16.5 µg/m³, 3.3× usual Grao de Murviedro, 1 November: 5.9 µg/m³, 1.2× usual Grao de Murviedro, 2 November: 6.8 µg/m³, 1.4× usual Grao de Murviedro, 3 November: 9.9 µg/m³, 2.0× usual Fuenlabrada Fuenlabrada, 27 October: 5.8 µg/m³, 0.7× usual Fuenlabrada, 28 October: 5.0 µg/m³, 0.6× usual Fuenlabrada, 29 October: 5.8 µg/m³, 0.7× usual Fuenlabrada, 30 October: 22.8 µg/m³, 2.6× usual Fuenlabrada, 31 October: 46.3 µg/m³, 5.3× usual Fuenlabrada, 1 November: 15.5 µg/m³, 1.8× usual Fuenlabrada, 2 November: 9.3 µg/m³, 1.1× usual Fuenlabrada, 3 November: 9.5 µg/m³, 1.1× usual Madrid Madrid, 27 October: 3.4 µg/m³, 0.6× usual Madrid, 28 October: 3.0 µg/m³, 0.5× usual Madrid, 29 October: 3.9 µg/m³, 0.7× usual Madrid, 30 October: 23.4 µg/m³, 4.0× usual Madrid, 31 October: 43.8 µg/m³, 7.4× usual Madrid, 1 November: 13.8 µg/m³, 2.3× usual Madrid, 2 November: 7.0 µg/m³, 1.2× usual Madrid, 3 November: 9.4 µg/m³, 1.6× usual Coslada Coslada, 27 October: 4.3 µg/m³, 0.6× usual Coslada, 28 October: 3.9 µg/m³, 0.5× usual Coslada, 29 October: 4.8 µg/m³, 0.7× usual Coslada, 30 October: 18.4 µg/m³, 2.6× usual Coslada, 31 October: 43.7 µg/m³, 6.2× usual Coslada, 1 November: 12.6 µg/m³, 1.8× usual Coslada, 2 November: 6.4 µg/m³, 0.9× usual Coslada, 3 November: 9.1 µg/m³, 1.3× usual Barrio de Peral Barrio de Peral, 27 October: no reading Barrio de Peral, 28 October: 5.6 µg/m³, 0.7× usual Barrio de Peral, 29 October: no reading Barrio de Peral, 30 October: 16.7 µg/m³, 2.2× usual Barrio de Peral, 31 October: 40.6 µg/m³, 5.4× usual Barrio de Peral, 1 November: 17.9 µg/m³, 2.4× usual Barrio de Peral, 2 November: 10.4 µg/m³, 1.4× usual Barrio de Peral, 3 November: no reading Murcia Murcia, 27 October: no reading Murcia, 28 October: 6.8 µg/m³, 0.7× usual Murcia, 29 October: 18.9 µg/m³, 1.9× usual Murcia, 30 October: 23.9 µg/m³, 2.4× usual Murcia, 31 October: 38.2 µg/m³, 3.9× usual Murcia, 1 November: 28.6 µg/m³, 2.9× usual Murcia, 2 November: 13.6 µg/m³, 1.4× usual Murcia, 3 November: 15.6 µg/m³, 1.6× usual Molina de Segura Molina de Segura, 27 October: no reading Molina de Segura, 28 October: 5.1 µg/m³, 0.7× usual Molina de Segura, 29 October: 18.4 µg/m³, 2.4× usual Molina de Segura, 30 October: 22.8 µg/m³, 2.9× usual Molina de Segura, 31 October: 36.6 µg/m³, 4.7× usual Molina de Segura, 1 November: 27.0 µg/m³, 3.5× usual Molina de Segura, 2 November: 9.3 µg/m³, 1.2× usual Molina de Segura, 3 November: 12.3 µg/m³, 1.6× usual Algete Algete, 27 October: 3.6 µg/m³, 0.7× usual Algete, 28 October: 2.5 µg/m³, 0.5× usual Algete, 29 October: 4.1 µg/m³, 0.8× usual Algete, 30 October: 18.5 µg/m³, 3.7× usual Algete, 31 October: 35.3 µg/m³, 7.1× usual Algete, 1 November: 9.9 µg/m³, 2.0× usual Algete, 2 November: 6.2 µg/m³, 1.2× usual Algete, 3 November: 5.5 µg/m³, 1.1× usual Vigo Vigo, 27 October: 9.0 µg/m³, 1.0× usual Vigo, 28 October: 11.9 µg/m³, 1.3× usual Vigo, 29 October: 15.6 µg/m³, 1.7× usual Vigo, 30 October: 20.8 µg/m³, 2.2× usual Vigo, 31 October: 32.8 µg/m³, 3.5× usual Vigo, 1 November: 14.5 µg/m³, 1.5× usual Vigo, 2 November: 17.5 µg/m³, 1.9× usual Vigo, 3 November: 23.9 µg/m³, 2.5× usual Valencia Valencia, 27 October: 3.0 µg/m³, 0.4× usual Valencia, 28 October: 6.7 µg/m³, 1.0× usual Valencia, 29 October: 19.1 µg/m³, 2.9× usual Valencia, 30 October: 20.8 µg/m³, 3.1× usual Valencia, 31 October: 29.9 µg/m³, 4.5× usual Valencia, 1 November: 11.0 µg/m³, 1.6× usual Valencia, 2 November: 10.2 µg/m³, 1.5× usual Valencia, 3 November: 13.9 µg/m³, 2.1× usual Valdemoro Valdemoro, 27 October: 4.2 µg/m³, 0.6× usual Valdemoro, 28 October: 5.0 µg/m³, 0.7× usual Valdemoro, 29 October: 4.5 µg/m³, 0.6× usual Valdemoro, 30 October: 20.9 µg/m³, 2.9× usual Valdemoro, 31 October: 29.9 µg/m³, 4.1× usual Valdemoro, 1 November: 11.7 µg/m³, 1.6× usual Valdemoro, 2 November: 8.6 µg/m³, 1.2× usual Valdemoro, 3 November: 7.9 µg/m³, 1.1× usual Valladolid Valladolid, 27 October: 5.8 µg/m³, 1.1× usual Valladolid, 28 October: 6.3 µg/m³, 1.2× usual Valladolid, 29 October: 7.5 µg/m³, 1.5× usual Valladolid, 30 October: 19.1 µg/m³, 3.7× usual Valladolid, 31 October: 27.6 µg/m³, 5.4× usual Valladolid, 1 November: 8.1 µg/m³, 1.6× usual Valladolid, 2 November: no reading Valladolid, 3 November: no reading León León, 27 October: 11.0 µg/m³, 2.1× usual León, 28 October: 7.0 µg/m³, 1.3× usual León, 29 October: 9.1 µg/m³, 1.7× usual León, 30 October: 13.9 µg/m³, 2.6× usual León, 31 October: 25.7 µg/m³, 4.8× usual León, 1 November: 8.1 µg/m³, 1.5× usual León, 2 November: 11.0 µg/m³, 2.1× usual León, 3 November: 10.1 µg/m³, 1.9× usual 27 Oct 28 29 30 31 1 Nov 2 3 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
Madrid Madrid, Spain 1 31 October 5.9 7.4× Móstoles Madrid, Spain 2 31 October 5.8 7.2× Algete Madrid, Spain 1 31 October 4.5 7.1× Alcalá de Henares Madrid, Spain 2 31 October 7.0 6.8× Coslada Madrid, Spain 1 31 October 7.1 6.2× Medina del Campo Castille and León, Spain 2 31 October 3.9 6.0× Torrejón de Ardoz Madrid, Spain 2 31 October 8.0 5.5× Barrio de Peral Murcia, Spain 1 31 October 7.5 5.4× Valladolid Castille and León, Spain 1 31 October 5.1 5.4× Fuenlabrada Madrid, Spain 1 31 October 8.7 5.3× Villena Valencia, Spain 1 30 October 5.9 5.3× Lorca Murcia, Spain 2 31 October 7.1 5.2× Grao de Murviedro Valencia, Spain 1 30 October 4.7 5.2× León Castille and León, Spain 1 31 October 5.3 4.8× Molina de Segura Murcia, Spain 1 31 October 7.8 4.7× Valencia Valencia, Spain 1 31 October 6.7 4.5× Cuenca Castille-La Mancha, Spain 2 30 October 10.0 4.4× Valdemoro Madrid, Spain 1 31 October 7.3 4.1× Cartagena Murcia, Spain 1 31 October 8.7 4.0× Murcia Murcia, Spain 1 31 October 9.9 3.9× Collado-Villalba Madrid, Spain 2 31 October 9.6 3.7× Vigo Galicia, Spain 1 31 October 9.4 3.5× Xàtiva Valencia, Spain 1 30 October 9.6 3.3×
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 Spain
Number 6 of 34 episodes in Spain since our records began, by cities reached.
North-eastern Spain and France, February 2023 72 North-eastern Spain, August 2025 44 North-eastern Spain and France, December 2023 to January 2024 44 South-western Europe, February 2024 37 North-eastern Spain and France, January and February 2024 33 North-eastern Spain, October 2024 23 North-eastern Spain, April 2024 20 Canary Islands, Spain, November 2025 15 Canary Islands, Spain, December 2024 15 Canary Islands, Spain, February 2024 15 Canary Islands, Spain, December 2023 15 Canary Islands, Spain, December 2023 15 Bars: cities reached; colour: the level of the episode's highest daily reading. All 34 .
Use this page SmogRank, North-eastern Spain, October 2024: 23 cities with PM2.5 at twice their usual or more, 30 to 31 October 2024, smogrank.com/episodes/2024-10-north-eastern-spain (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.
