SmogRank / Episodes / Spain

Northern Spain, August 2025

For 2 days, from 26 to 27 August 2025, 15 cities in Spain had PM2.5 at least twice their usual for the time of year. The worst reading was León, Castille and León, Spain: 60.7 µg/m³ on 26 August, about 9.3× its usual 6.5. Ended 27 August.

No cause namedWe have no fire or smoke records for these days, so we only say what the measurements show.
Cities reached15in 1 country
Days226 to 27 August 2025
Worst day26 August10 cities counted
Furthest above usual9.3×León

Day by day

26 August 10 cities at twice their usual or more
ValdemoroFuenlabradaVillarejo de SalvanésMadridCosladaTorrejón de ArdozAlgeteVilla del PradoCollado-VillalbaSan IldefonsoBailénAranda de DueroMedina del CampoCórdobaSoriaSalamancaUtielBurgosGranadaBuñolLogroñoMiranda de EbroVillenaTudelaEldaGasteiz / VitoriaOntinyentMálagaAlmeríaCártamaValenciaZaragozaAlcalá de GuadairaSaguntoSevillaGrao de MurviedroEl PlanBarrio de PeralCartagenaAlicanteBeasainBurrianaPrado del ReyCastelló de la PlanaPamplonaBenicàssimHuelvaVila RealLleidaXinzo de LimiaSarriaParedesOurenseFreamundeSalouConstantíLugoTarragonaFaroLalínPonte de LimaSantiago do CacémSinesVigoPontevedraSantiago de Compostelales EscaldesMurciaMóstolesAlcantarillaAlcalá de HenaresMolina de SeguraPalenciaJumillaCampillosTorreviejaJaénManzanaresLorcaCaravacaPonferradaLeón
23 Aug24252627282930
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

LeónLeón, 23 August: 14.5 µg/m³León, 24 August: 20.4 µg/m³León, 25 August: 19.5 µg/m³León, 26 August: 60.7 µg/m³, 9.3× its usual 6.5León, 27 August: 15.6 µg/m³León, 28 August: 5.3 µg/m³León, 29 August: 2.6 µg/m³León, 30 August: 2.7 µg/m³PonferradaPonferrada, 23 August: 15.1 µg/m³Ponferrada, 24 August: 48.0 µg/m³Ponferrada, 25 August: 33.2 µg/m³Ponferrada, 26 August: 36.7 µg/m³, 4.1× its usual 8.9Ponferrada, 27 August: 9.7 µg/m³Ponferrada, 28 August: 3.4 µg/m³Ponferrada, 29 August: 4.3 µg/m³Ponferrada, 30 August: 3.7 µg/m³JaénJaén, 23 August: 21.7 µg/m³Jaén, 24 August: no readingJaén, 25 August: 22.6 µg/m³Jaén, 26 August: 34.3 µg/m³, 3.6× its usual 9.6Jaén, 27 August: no readingJaén, 28 August: 14.9 µg/m³Jaén, 29 August: 12.8 µg/m³Jaén, 30 August: 14.0 µg/m³ManzanaresManzanares, 23 August: 23.1 µg/m³Manzanares, 24 August: 11.7 µg/m³Manzanares, 25 August: 16.5 µg/m³Manzanares, 26 August: 33.7 µg/m³, 3.3× its usual 10.3Manzanares, 27 August: 38.3 µg/m³, 3.7× its usual 10.3Manzanares, 28 August: 6.9 µg/m³Manzanares, 29 August: 5.5 µg/m³Manzanares, 30 August: 5.3 µg/m³LorcaLorca, 23 August: 19.9 µg/m³Lorca, 24 August: 14.3 µg/m³Lorca, 25 August: 22.8 µg/m³Lorca, 26 August: 31.5 µg/m³, 2.9× its usual 10.9Lorca, 27 August: 41.7 µg/m³, 3.8× its usual 10.9Lorca, 28 August: 17.1 µg/m³Lorca, 29 August: 10.8 µg/m³Lorca, 30 August: 7.9 µg/m³JumillaJumilla, 23 August: 16.2 µg/m³Jumilla, 24 August: 11.1 µg/m³Jumilla, 25 August: 18.4 µg/m³Jumilla, 26 August: 29.7 µg/m³, 2.6× its usual 11.3Jumilla, 27 August: 30.7 µg/m³, 2.7× its usual 11.3Jumilla, 28 August: 13.3 µg/m³Jumilla, 29 August: 5.6 µg/m³Jumilla, 30 August: 5.9 µg/m³PalenciaPalencia, 23 August: 11.6 µg/m³Palencia, 24 August: 15.3 µg/m³Palencia, 25 August: 18.7 µg/m³Palencia, 26 August: 28.0 µg/m³, 2.7× its usual 10.4Palencia, 27 August: 14.7 µg/m³Palencia, 28 August: 6.2 µg/m³Palencia, 29 August: 9.4 µg/m³Palencia, 30 August: 6.0 µg/m³CampillosCampillos, 23 August: 13.4 µg/m³Campillos, 24 August: no readingCampillos, 25 August: 12.1 µg/m³Campillos, 26 August: 27.0 µg/m³, 3.0× its usual 8.9Campillos, 27 August: no readingCampillos, 28 August: no readingCampillos, 29 August: 7.3 µg/m³Campillos, 30 August: 6.5 µg/m³TorreviejaTorrevieja, 23 August: 10.1 µg/m³Torrevieja, 24 August: 12.3 µg/m³Torrevieja, 25 August: 21.9 µg/m³Torrevieja, 26 August: 26.0 µg/m³, 3.4× its usual 7.7Torrevieja, 27 August: 21.1 µg/m³Torrevieja, 28 August: 16.0 µg/m³Torrevieja, 29 August: 7.5 µg/m³Torrevieja, 30 August: 8.7 µg/m³CaravacaCaravaca, 23 August: 17.2 µg/m³Caravaca, 24 August: 9.8 µg/m³Caravaca, 25 August: 15.7 µg/m³Caravaca, 26 August: 25.2 µg/m³, 2.7× its usual 9.2Caravaca, 27 August: 36.2 µg/m³, 3.9× its usual 9.2Caravaca, 28 August: 11.2 µg/m³Caravaca, 29 August: 3.5 µg/m³Caravaca, 30 August: 3.6 µg/m³MóstolesMóstoles, 23 August: 16.7 µg/m³Móstoles, 24 August: 21.1 µg/m³Móstoles, 25 August: 15.9 µg/m³Móstoles, 26 August: no readingMóstoles, 27 August: 29.2 µg/m³, 2.3× its usual 12.6Móstoles, 28 August: 6.4 µg/m³Móstoles, 29 August: 10.8 µg/m³Móstoles, 30 August: 6.7 µg/m³AlcantarillaAlcantarilla, 23 August: 13.6 µg/m³Alcantarilla, 24 August: 13.3 µg/m³Alcantarilla, 25 August: 18.8 µg/m³Alcantarilla, 26 August: 23.1 µg/m³Alcantarilla, 27 August: 28.6 µg/m³, 2.4× its usual 11.8Alcantarilla, 28 August: 17.7 µg/m³Alcantarilla, 29 August: 9.4 µg/m³Alcantarilla, 30 August: 8.2 µg/m³Molina de SeguraMolina de Segura, 23 August: 11.6 µg/m³Molina de Segura, 24 August: 12.3 µg/m³Molina de Segura, 25 August: 17.8 µg/m³Molina de Segura, 26 August: 22.8 µg/m³Molina de Segura, 27 August: 27.0 µg/m³, 2.5× its usual 11.0Molina de Segura, 28 August: 17.6 µg/m³Molina de Segura, 29 August: 8.8 µg/m³Molina de Segura, 30 August: 11.0 µg/m³MurciaMurcia, 23 August: 13.0 µg/m³Murcia, 24 August: 12.5 µg/m³Murcia, 25 August: 18.3 µg/m³Murcia, 26 August: 22.1 µg/m³Murcia, 27 August: 26.8 µg/m³, 2.3× its usual 11.9Murcia, 28 August: 18.9 µg/m³Murcia, 29 August: 10.0 µg/m³Murcia, 30 August: 10.1 µg/m³Alcalá de HenaresAlcalá de Henares, 23 August: 11.3 µg/m³Alcalá de Henares, 24 August: 13.2 µg/m³Alcalá de Henares, 25 August: 13.9 µg/m³Alcalá de Henares, 26 August: 19.6 µg/m³Alcalá de Henares, 27 August: 26.2 µg/m³, 2.5× its usual 10.5Alcalá de Henares, 28 August: 7.3 µg/m³Alcalá de Henares, 29 August: 14.0 µg/m³Alcalá de Henares, 30 August: 7.7 µg/m³23 Aug24252627282930
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.
Good0–50
Moderate51–100
Sensitive groups101–150
Unhealthy151–200
Very unhealthy201–300
Hazardous301+

Every city it reached

CityDaysHighestUsualAbove usual
LeónCastille and León, Spain1 60.726 August6.59.3×
PonferradaCastille and León, Spain1 36.726 August8.94.1×
CaravacaMurcia, Spain2 36.227 August9.23.9×
LorcaMurcia, Spain2 41.727 August10.93.8×
ManzanaresCastille-La Mancha, Spain2 38.327 August10.33.7×
JaénAndalusia, Spain1 34.326 August9.63.6×
TorreviejaValencia, Spain1 26.026 August7.73.4×
CampillosAndalusia, Spain1 27.026 August8.93.0×
JumillaMurcia, Spain2 30.727 August11.32.7×
PalenciaCastille and León, Spain1 28.026 August10.42.7×
Molina de SeguraMurcia, Spain1 27.027 August11.02.5×
Alcalá de HenaresMadrid, Spain1 26.227 August10.52.5×
AlcantarillaMurcia, Spain1 28.627 August11.82.4×
MóstolesMadrid, Spain1 29.227 August12.62.3×
MurciaMurcia, Spain1 26.827 August11.92.3×

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 18 of 41 episodes in Spain since our records began, by cities reached.

Bars: cities reached; colour: the level of the episode's highest daily reading. All 41.

Use this page

SmogRank, Northern Spain, August 2025: 15 cities with PM2.5 at twice their usual or more, 26 to 27 August 2025, smogrank.com/episodes/2025-08-northern-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.