SmogRank / Episodes / Spain
Spain, April 2024
For 3 days, from 6 to 8 April 2024, 25 cities in Spain had PM2.5 at least twice their usual for the time of year. The worst reading was Campillos, Andalusia, Spain: 62.8 µg/m³ on 6 April, about 7.6× its usual 8.3. Readings stopped after 8 April, so this episode may have run longer.
No cause named We have no fire or smoke records for these days, so we only say what the measurements show.
Cities reached 25 in 1 country
Days 3 6 to 8 April 2024
Worst day 7 April 22 cities counted
Furthest above usual 11× Villarejo de Salvanés
Day by day
Play 7 April 22 cities at twice their usual or more
Toledo Cártama Valdemoro Fuenlabrada Villa del Prado Sevilla Madrid Coslada Torrejón de Ardoz Collado-Villalba San Ildefonso San Fernando Cartagena Utiel Villena Elda Salamanca Torrevieja Buñol Ontinyent Alicante Valencia Sagunto Grao de Murviedro Faro Burriana Castelló de la Plana Benicàssim Santiago do Cacém Sines Huelva San Roque Prado del Rey Alcalá de Henares Molina de Segura Barrio de Peral El Plan Murcia Móstoles La Línea de la Concepción Algeciras Ceuta Granada Algete Azuqueca de Henares Bailén Almería Albacete Lorca Ciudad Real Cuenca Puertollano Campillos Jaén Villarejo de Salvanés 3 Apr 4 5 6 7 8 9 10 11 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
Campillos Campillos, 3 April: 5.3 µg/m³ Campillos, 4 April: 4.0 µg/m³ Campillos, 5 April: 5.9 µg/m³ Campillos, 6 April: 62.8 µg/m³, 7.6× its usual 8.3 Campillos, 7 April: 62.4 µg/m³, 7.5× its usual 8.3 Campillos, 8 April: 6.1 µg/m³ Campillos, 9 April: no reading Campillos, 10 April: 3.4 µg/m³ Campillos, 11 April: 6.8 µg/m³ Puertollano Puertollano, 3 April: no reading Puertollano, 4 April: 4.8 µg/m³ Puertollano, 5 April: 7.3 µg/m³ Puertollano, 6 April: 42.6 µg/m³, 7.5× its usual 5.7 Puertollano, 7 April: 32.0 µg/m³, 5.8× its usual 5.5 Puertollano, 8 April: 4.4 µg/m³ Puertollano, 9 April: no reading Puertollano, 10 April: no reading Puertollano, 11 April: 3.6 µg/m³ Jaén Jaén, 3 April: 9.5 µg/m³ Jaén, 4 April: 7.6 µg/m³ Jaén, 5 April: 12.3 µg/m³ Jaén, 6 April: 39.3 µg/m³, 6.6× its usual 6.0 Jaén, 7 April: 54.2 µg/m³, 9.7× its usual 5.6 Jaén, 8 April: 13.7 µg/m³ Jaén, 9 April: no reading Jaén, 10 April: 4.9 µg/m³ Jaén, 11 April: 6.6 µg/m³ Bailén Bailén, 3 April: 6.5 µg/m³ Bailén, 4 April: 13.5 µg/m³ Bailén, 5 April: 16.9 µg/m³ Bailén, 6 April: 38.4 µg/m³, 3.7× its usual 10.3 Bailén, 7 April: 54.3 µg/m³, 5.4× its usual 10.0 Bailén, 8 April: 11.1 µg/m³ Bailén, 9 April: no reading Bailén, 10 April: 10.2 µg/m³ Bailén, 11 April: 13.7 µg/m³ Cuenca Cuenca, 3 April: 9.4 µg/m³ Cuenca, 4 April: 9.2 µg/m³ Cuenca, 5 April: 10.9 µg/m³ Cuenca, 6 April: 37.6 µg/m³, 4.5× its usual 8.4 Cuenca, 7 April: 53.5 µg/m³, 6.4× its usual 8.3 Cuenca, 8 April: 22.9 µg/m³ Cuenca, 9 April: no reading Cuenca, 10 April: 5.7 µg/m³ Cuenca, 11 April: 4.3 µg/m³ Villarejo de Salvan… Villarejo de Salvanés, 3 April: 4.9 µg/m³ Villarejo de Salvanés, 4 April: 5.5 µg/m³ Villarejo de Salvanés, 5 April: 7.3 µg/m³ Villarejo de Salvanés, 6 April: 35.6 µg/m³, 7.1× its usual 4.5 Villarejo de Salvanés, 7 April: 53.0 µg/m³, 11× its usual 4.5 Villarejo de Salvanés, 8 April: 6.4 µg/m³ Villarejo de Salvanés, 9 April: no reading Villarejo de Salvanés, 10 April: 4.9 µg/m³ Villarejo de Salvanés, 11 April: 3.8 µg/m³ Ciudad Real Ciudad Real, 3 April: 4.1 µg/m³ Ciudad Real, 4 April: 4.7 µg/m³ Ciudad Real, 5 April: 5.5 µg/m³ Ciudad Real, 6 April: 32.0 µg/m³, 6.4× its usual 3.4 Ciudad Real, 7 April: 27.9 µg/m³, 5.6× its usual 3.4 Ciudad Real, 8 April: 4.6 µg/m³ Ciudad Real, 9 April: no reading Ciudad Real, 10 April: 3.1 µg/m³ Ciudad Real, 11 April: 2.7 µg/m³ Huelva Huelva, 3 April: no reading Huelva, 4 April: no reading Huelva, 5 April: no reading Huelva, 6 April: 26.6 µg/m³, 3.1× its usual 8.6 Huelva, 7 April: no reading Huelva, 8 April: no reading Huelva, 9 April: no reading Huelva, 10 April: 3.2 µg/m³ Huelva, 11 April: 12.3 µg/m³ Lorca Lorca, 3 April: 6.9 µg/m³ Lorca, 4 April: 6.7 µg/m³ Lorca, 5 April: 6.6 µg/m³ Lorca, 6 April: 20.9 µg/m³ Lorca, 7 April: 39.1 µg/m³, 6.1× its usual 6.4 Lorca, 8 April: 38.7 µg/m³, 6.0× its usual 6.4 Lorca, 9 April: no reading Lorca, 10 April: 5.0 µg/m³ Lorca, 11 April: 6.2 µg/m³ La Línea de la Conc… La Línea de la Concepción, 3 April: 9.9 µg/m³ La Línea de la Concepción, 4 April: 10.5 µg/m³ La Línea de la Concepción, 5 April: 11.2 µg/m³ La Línea de la Concepción, 6 April: 21.9 µg/m³ La Línea de la Concepción, 7 April: 37.4 µg/m³, 4.1× its usual 9.2 La Línea de la Concepción, 8 April: 8.7 µg/m³ La Línea de la Concepción, 9 April: no reading La Línea de la Concepción, 10 April: 6.7 µg/m³ La Línea de la Concepción, 11 April: 5.4 µg/m³ Albacete Albacete, 3 April: no reading Albacete, 4 April: 4.1 µg/m³ Albacete, 5 April: no reading Albacete, 6 April: no reading Albacete, 7 April: 32.2 µg/m³, 6.1× its usual 5.3 Albacete, 8 April: no reading Albacete, 9 April: no reading Albacete, 10 April: 4.9 µg/m³ Albacete, 11 April: no reading Murcia Murcia, 3 April: 9.5 µg/m³ Murcia, 4 April: 9.0 µg/m³ Murcia, 5 April: 11.0 µg/m³ Murcia, 6 April: 20.0 µg/m³ Murcia, 7 April: 32.2 µg/m³, 3.9× its usual 8.2 Murcia, 8 April: 28.4 µg/m³, 3.5× its usual 8.1 Murcia, 9 April: no reading Murcia, 10 April: 8.2 µg/m³ Murcia, 11 April: 8.5 µg/m³ Prado del Rey Prado del Rey, 3 April: 7.3 µg/m³ Prado del Rey, 4 April: 7.0 µg/m³ Prado del Rey, 5 April: 6.5 µg/m³ Prado del Rey, 6 April: 21.1 µg/m³ Prado del Rey, 7 April: 31.5 µg/m³, 3.5× its usual 8.9 Prado del Rey, 8 April: 8.6 µg/m³ Prado del Rey, 9 April: no reading Prado del Rey, 10 April: 5.7 µg/m³ Prado del Rey, 11 April: 6.0 µg/m³ Almería Almería, 3 April: 3.9 µg/m³ Almería, 4 April: 5.5 µg/m³ Almería, 5 April: 6.8 µg/m³ Almería, 6 April: 22.3 µg/m³ Almería, 7 April: 31.3 µg/m³, 5.7× its usual 5.5 Almería, 8 April: 9.9 µg/m³ Almería, 9 April: no reading Almería, 10 April: 4.2 µg/m³ Almería, 11 April: 6.3 µg/m³ San Roque San Roque, 3 April: 6.6 µg/m³ San Roque, 4 April: 7.1 µg/m³ San Roque, 5 April: 6.7 µg/m³ San Roque, 6 April: 17.8 µg/m³ San Roque, 7 April: 29.5 µg/m³, 3.4× its usual 8.8 San Roque, 8 April: 6.6 µg/m³ San Roque, 9 April: no reading San Roque, 10 April: 6.4 µg/m³ San Roque, 11 April: 5.3 µg/m³ Ceuta Ceuta, 3 April: 7.5 µg/m³ Ceuta, 4 April: 6.1 µg/m³ Ceuta, 5 April: 5.8 µg/m³ Ceuta, 6 April: 11.1 µg/m³ Ceuta, 7 April: 29.2 µg/m³, 4.5× its usual 6.5 Ceuta, 8 April: 6.3 µg/m³ Ceuta, 9 April: no reading Ceuta, 10 April: 5.0 µg/m³ Ceuta, 11 April: 4.3 µg/m³ Algeciras Algeciras, 3 April: 5.2 µg/m³ Algeciras, 4 April: 24.8 µg/m³ Algeciras, 5 April: 2.2 µg/m³ Algeciras, 6 April: 14.8 µg/m³ Algeciras, 7 April: 28.8 µg/m³, 4.3× its usual 6.7 Algeciras, 8 April: 6.0 µg/m³ Algeciras, 9 April: no reading Algeciras, 10 April: 4.4 µg/m³ Algeciras, 11 April: 4.2 µg/m³ Móstoles Móstoles, 3 April: no reading Móstoles, 4 April: no reading Móstoles, 5 April: 16.9 µg/m³ Móstoles, 6 April: no reading Móstoles, 7 April: 28.6 µg/m³, 4.0× its usual 7.2 Móstoles, 8 April: 4.3 µg/m³ Móstoles, 9 April: no reading Móstoles, 10 April: 7.2 µg/m³ Móstoles, 11 April: no reading Granada Granada, 3 April: 6.7 µg/m³ Granada, 4 April: 6.3 µg/m³ Granada, 5 April: 8.5 µg/m³ Granada, 6 April: 23.7 µg/m³ Granada, 7 April: 28.3 µg/m³, 4.6× its usual 6.1 Granada, 8 April: 7.7 µg/m³ Granada, 9 April: no reading Granada, 10 April: 5.9 µg/m³ Granada, 11 April: 5.4 µg/m³ Molina de Segura Molina de Segura, 3 April: 7.5 µg/m³ Molina de Segura, 4 April: 7.7 µg/m³ Molina de Segura, 5 April: 8.7 µg/m³ Molina de Segura, 6 April: 18.9 µg/m³ Molina de Segura, 7 April: 27.7 µg/m³, 3.7× its usual 7.5 Molina de Segura, 8 April: 23.0 µg/m³ Molina de Segura, 9 April: no reading Molina de Segura, 10 April: 5.4 µg/m³ Molina de Segura, 11 April: 6.8 µg/m³ Alcalá de Henares Alcalá de Henares, 3 April: no reading Alcalá de Henares, 4 April: 10.2 µg/m³ Alcalá de Henares, 5 April: 12.1 µg/m³ Alcalá de Henares, 6 April: 15.2 µg/m³ Alcalá de Henares, 7 April: 27.2 µg/m³, 3.6× its usual 7.6 Alcalá de Henares, 8 April: 8.1 µg/m³ Alcalá de Henares, 9 April: no reading Alcalá de Henares, 10 April: no reading Alcalá de Henares, 11 April: 6.3 µg/m³ Azuqueca de Henares Azuqueca de Henares, 3 April: no reading Azuqueca de Henares, 4 April: 5.3 µg/m³ Azuqueca de Henares, 5 April: 6.6 µg/m³ Azuqueca de Henares, 6 April: no reading Azuqueca de Henares, 7 April: 26.2 µg/m³, 5.2× its usual 4.8 Azuqueca de Henares, 8 April: 5.8 µg/m³ Azuqueca de Henares, 9 April: no reading Azuqueca de Henares, 10 April: no reading Azuqueca de Henares, 11 April: 4.4 µg/m³ Algete Algete, 3 April: 4.7 µg/m³ Algete, 4 April: 7.4 µg/m³ Algete, 5 April: 6.8 µg/m³ Algete, 6 April: 12.7 µg/m³ Algete, 7 April: 25.3 µg/m³, 5.1× its usual 4.6 Algete, 8 April: 4.6 µg/m³ Algete, 9 April: no reading Algete, 10 April: 3.4 µg/m³ Algete, 11 April: 2.8 µg/m³ El Plan El Plan, 3 April: 7.0 µg/m³ El Plan, 4 April: 9.6 µg/m³ El Plan, 5 April: 10.0 µg/m³ El Plan, 6 April: 16.7 µg/m³ El Plan, 7 April: 22.1 µg/m³ El Plan, 8 April: 28.4 µg/m³, 3.8× its usual 7.4 El Plan, 9 April: no reading El Plan, 10 April: 5.3 µg/m³ El Plan, 11 April: 6.1 µg/m³ Barrio de Peral Barrio de Peral, 3 April: 7.0 µg/m³ Barrio de Peral, 4 April: 9.6 µg/m³ Barrio de Peral, 5 April: 10.0 µg/m³ Barrio de Peral, 6 April: 16.7 µg/m³ Barrio de Peral, 7 April: 22.1 µg/m³ Barrio de Peral, 8 April: 28.4 µg/m³, 3.8× its usual 7.4 Barrio de Peral, 9 April: no reading Barrio de Peral, 10 April: 5.3 µg/m³ Barrio de Peral, 11 April: 6.1 µg/m³ 3 Apr 4 5 6 7 8 9 10 11 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
Villarejo de Salvanés Madrid, Spain 2 7 April 4.5 11× Jaén Andalusia, Spain 2 7 April 5.6 9.7× Campillos Andalusia, Spain 2 6 April 8.3 7.6× Puertollano Castille-La Mancha, Spain 2 6 April 5.7 7.5× Cuenca Castille-La Mancha, Spain 2 7 April 8.3 6.4× Ciudad Real Castille-La Mancha, Spain 2 6 April 3.4 6.4× Lorca Murcia, Spain 2 7 April 6.4 6.1× Albacete Castille-La Mancha, Spain 1 7 April 5.3 6.1× Almería Andalusia, Spain 1 7 April 5.5 5.7× Bailén Andalusia, Spain 2 7 April 10.0 5.4× Azuqueca de Henares Castille-La Mancha, Spain 1 7 April 4.8 5.2× Algete Madrid, Spain 1 7 April 4.6 5.1× Granada Andalusia, Spain 1 7 April 6.1 4.6× Ceuta Ceuta, Spain 1 7 April 6.5 4.5× Algeciras Andalusia, Spain 1 7 April 6.7 4.3× La Línea de la Concepción Andalusia, Spain 1 7 April 9.2 4.1× Móstoles Madrid, Spain 1 7 April 7.2 4.0× Murcia Murcia, Spain 2 7 April 8.2 3.9× El Plan Murcia, Spain 1 8 April 7.4 3.8× Barrio de Peral Murcia, Spain 1 8 April 7.4 3.8× Molina de Segura Murcia, Spain 1 7 April 7.5 3.7× Alcalá de Henares Madrid, Spain 1 7 April 7.6 3.6× Prado del Rey Andalusia, Spain 1 7 April 8.9 3.5× San Roque Andalusia, Spain 1 7 April 8.8 3.4× Huelva Andalusia, Spain 1 6 April 8.6 3.1×
Daily means in µg/m³, over the days each city counted in this episode. Highest: its highest of those days. Usual: the city's median for the time of year of that day (its days within 21 days of the date, every year, leaving out the week around it). Above usual: its highest day against that, with a usual under 5 µg/m³ taken as 5.
Against other episodes in Spain
Number 6 of 41 episodes in Spain since our records began, by cities reached.
Spain, France and Portugal, February 2023 72 Spain, Portugal and Andorra, August 2025 57 Southern Europe, February 2024 53 Spain, France and 2 more countries, December 2023 to January 2024 48 Northern Spain, October 2024 29 Spain, April 2024 25 Spain, Portugal and France, February 2024 20 Canary Islands, Spain, November 2025 18 Canary Islands, Spain, December 2024 18 Canary Islands, Spain, 8 to 9 February 2024 18 Canary Islands, Spain, 16 to 17 December 2023 18 Canary Islands, Spain, 11 to 13 December 2023 18 Bars: cities reached; colour: the level of the episode's highest daily reading. All 41 .
Use this page SmogRank, Spain, April 2024: 25 cities with PM2.5 at twice their usual or more, 6 to 8 April 2024, smogrank.com/episodes/2024-04-spain (accessed 5 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.
