SmogRank / Episodes / Spain

Canary Islands, Spain, September 2025

For 6 days, from 16 to 21 September 2025, 14 cities in Spain had PM2.5 at least twice their usual for the time of year. The worst reading was Ingenio, Canary Islands, Spain: 94.7 µg/m³ on 17 September, about 11× its usual 9.0. Ended 21 September.

Few fires were detected near these cities on those days. Spreads like this usually come from still weather trapping smoke from heating, traffic and industry, or from dust.
Cities reached14in 1 country
Days616 to 21 September 2025
Worst day17 September13 cities counted
Furthest above usual14×Santa Lucía

Day by day

17 September 13 cities at twice their usual or more
CandelariaLas Palmas de Gran CanariaSanta Cruz de la PalmaPuerto del RosarioArrecifeSan IsidroArucasTeldeSanta Cruz de TenerifeAronaLomo de AricoMaspalomasLa OrotavaVecindarioAgüimesGranadilla de AbonaIngenioSan Sebastián de la GomeraSanta Lucía
13 Sep1415161718192021222324
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

Santa LucíaSanta Lucía, 13 September: 2.5 µg/m³Santa Lucía, 14 September: 14.0 µg/m³Santa Lucía, 15 September: 11.8 µg/m³Santa Lucía, 16 September: 42.5 µg/m³, 8.5× its usual 3.8Santa Lucía, 17 September: 70.7 µg/m³, 14× its usual 4.4Santa Lucía, 18 September: 25.4 µg/m³, 3.6× its usual 7.1Santa Lucía, 19 September: 26.4 µg/m³, 3.6× its usual 7.3Santa Lucía, 20 September: 17.3 µg/m³Santa Lucía, 21 September: 16.0 µg/m³Santa Lucía, 22 September: 8.0 µg/m³Santa Lucía, 23 September: 2.9 µg/m³Santa Lucía, 24 September: 1.3 µg/m³MaspalomasMaspalomas, 13 September: 10.2 µg/m³Maspalomas, 14 September: 15.5 µg/m³Maspalomas, 15 September: 17.2 µg/m³Maspalomas, 16 September: 40.1 µg/m³, 4.6× its usual 8.8Maspalomas, 17 September: 69.0 µg/m³, 7.4× its usual 9.3Maspalomas, 18 September: 44.1 µg/m³, 4.7× its usual 9.4Maspalomas, 19 September: 36.0 µg/m³, 3.7× its usual 9.8Maspalomas, 20 September: 30.8 µg/m³, 3.1× its usual 9.8Maspalomas, 21 September: 25.0 µg/m³, 2.5× its usual 9.9Maspalomas, 22 September: 16.5 µg/m³Maspalomas, 23 September: 9.4 µg/m³Maspalomas, 24 September: 8.4 µg/m³AgüimesAgüimes, 13 September: 13.5 µg/m³Agüimes, 14 September: 18.1 µg/m³Agüimes, 15 September: 20.8 µg/m³Agüimes, 16 September: 38.2 µg/m³, 4.2× its usual 9.0Agüimes, 17 September: 89.7 µg/m³, 8.5× its usual 10.6Agüimes, 18 September: 54.3 µg/m³, 4.9× its usual 11.1Agüimes, 19 September: 44.1 µg/m³, 3.8× its usual 11.6Agüimes, 20 September: 34.0 µg/m³, 2.9× its usual 11.7Agüimes, 21 September: 29.8 µg/m³, 2.5× its usual 11.9Agüimes, 22 September: 21.2 µg/m³Agüimes, 23 September: 10.6 µg/m³Agüimes, 24 September: 8.8 µg/m³VecindarioVecindario, 13 September: 13.5 µg/m³Vecindario, 14 September: 18.1 µg/m³Vecindario, 15 September: 20.8 µg/m³Vecindario, 16 September: 38.2 µg/m³, 4.2× its usual 9.0Vecindario, 17 September: 89.7 µg/m³, 8.5× its usual 10.6Vecindario, 18 September: 54.3 µg/m³, 4.9× its usual 11.1Vecindario, 19 September: 44.1 µg/m³, 3.8× its usual 11.6Vecindario, 20 September: 34.0 µg/m³, 2.9× its usual 11.7Vecindario, 21 September: 29.8 µg/m³, 2.5× its usual 11.9Vecindario, 22 September: 21.2 µg/m³Vecindario, 23 September: 10.6 µg/m³Vecindario, 24 September: 8.8 µg/m³IngenioIngenio, 13 September: 10.1 µg/m³Ingenio, 14 September: 17.1 µg/m³Ingenio, 15 September: 11.3 µg/m³Ingenio, 16 September: 25.7 µg/m³, 2.9× its usual 9.0Ingenio, 17 September: 94.7 µg/m³, 11× its usual 9.0Ingenio, 18 September: 68.5 µg/m³, 7.4× its usual 9.3Ingenio, 19 September: 45.9 µg/m³, 4.7× its usual 9.7Ingenio, 20 September: 29.8 µg/m³, 3.0× its usual 9.8Ingenio, 21 September: 29.7 µg/m³, 2.9× its usual 10.1Ingenio, 22 September: 20.3 µg/m³Ingenio, 23 September: 10.5 µg/m³Ingenio, 24 September: 10.0 µg/m³San Sebastián de la…San Sebastián de la Gomera, 13 September: 6.3 µg/m³San Sebastián de la Gomera, 14 September: 7.9 µg/m³San Sebastián de la Gomera, 15 September: 10.9 µg/m³San Sebastián de la Gomera, 16 September: 16.5 µg/m³San Sebastián de la Gomera, 17 September: 85.8 µg/m³, 14× its usual 6.3San Sebastián de la Gomera, 18 September: 59.8 µg/m³, 8.8× its usual 6.8San Sebastián de la Gomera, 19 September: 42.7 µg/m³, 6.3× its usual 6.8San Sebastián de la Gomera, 20 September: 24.9 µg/m³San Sebastián de la Gomera, 21 September: 21.0 µg/m³San Sebastián de la Gomera, 22 September: 9.3 µg/m³San Sebastián de la Gomera, 23 September: 3.6 µg/m³San Sebastián de la Gomera, 24 September: 2.7 µg/m³Granadilla de AbonaGranadilla de Abona, 13 September: 4.3 µg/m³Granadilla de Abona, 14 September: 4.8 µg/m³Granadilla de Abona, 15 September: 6.1 µg/m³Granadilla de Abona, 16 September: 15.4 µg/m³Granadilla de Abona, 17 September: 63.3 µg/m³, 10× its usual 6.2Granadilla de Abona, 18 September: 52.3 µg/m³, 8.2× its usual 6.4Granadilla de Abona, 19 September: 20.6 µg/m³Granadilla de Abona, 20 September: 18.4 µg/m³Granadilla de Abona, 21 September: 16.2 µg/m³Granadilla de Abona, 22 September: 5.7 µg/m³Granadilla de Abona, 23 September: 2.0 µg/m³Granadilla de Abona, 24 September: 1.2 µg/m³Lomo de AricoLomo de Arico, 13 September: 3.9 µg/m³Lomo de Arico, 14 September: 5.2 µg/m³Lomo de Arico, 15 September: 6.8 µg/m³Lomo de Arico, 16 September: 15.2 µg/m³Lomo de Arico, 17 September: 46.3 µg/m³, 6.7× its usual 6.9Lomo de Arico, 18 September: 34.8 µg/m³, 5.0× its usual 7.0Lomo de Arico, 19 September: 18.9 µg/m³Lomo de Arico, 20 September: 16.6 µg/m³Lomo de Arico, 21 September: 15.8 µg/m³Lomo de Arico, 22 September: 6.2 µg/m³Lomo de Arico, 23 September: 1.9 µg/m³Lomo de Arico, 24 September: 1.6 µg/m³ArucasArucas, 13 September: 7.5 µg/m³Arucas, 14 September: 7.6 µg/m³Arucas, 15 September: 8.6 µg/m³Arucas, 16 September: 12.7 µg/m³Arucas, 17 September: 33.6 µg/m³, 4.9× its usual 6.9Arucas, 18 September: 23.4 µg/m³Arucas, 19 September: 20.1 µg/m³Arucas, 20 September: 15.2 µg/m³Arucas, 21 September: 14.8 µg/m³Arucas, 22 September: 9.7 µg/m³Arucas, 23 September: 6.5 µg/m³Arucas, 24 September: 6.4 µg/m³AronaArona, 13 September: 4.4 µg/m³Arona, 14 September: 7.4 µg/m³Arona, 15 September: 9.1 µg/m³Arona, 16 September: 9.1 µg/m³Arona, 17 September: 31.8 µg/m³, 6.4× its usual 4.7Arona, 18 September: 31.1 µg/m³, 6.2× its usual 4.8Arona, 19 September: 21.5 µg/m³Arona, 20 September: 20.9 µg/m³Arona, 21 September: 17.9 µg/m³Arona, 22 September: 7.5 µg/m³Arona, 23 September: 3.0 µg/m³Arona, 24 September: 4.2 µg/m³La OrotavaLa Orotava, 13 September: 6.4 µg/m³La Orotava, 14 September: 7.1 µg/m³La Orotava, 15 September: 8.2 µg/m³La Orotava, 16 September: 11.1 µg/m³La Orotava, 17 September: 30.6 µg/m³, 6.1× its usual 5.0La Orotava, 18 September: 38.8 µg/m³, 7.8× its usual 5.0La Orotava, 19 September: 21.3 µg/m³La Orotava, 20 September: 13.2 µg/m³La Orotava, 21 September: 13.3 µg/m³La Orotava, 22 September: 7.8 µg/m³La Orotava, 23 September: 4.5 µg/m³La Orotava, 24 September: no readingTeldeTelde, 13 September: 5.5 µg/m³Telde, 14 September: 7.0 µg/m³Telde, 15 September: 8.0 µg/m³Telde, 16 September: 9.3 µg/m³Telde, 17 September: 27.3 µg/m³, 5.5× its usual 3.6Telde, 18 September: 20.3 µg/m³Telde, 19 September: 21.9 µg/m³Telde, 20 September: 15.0 µg/m³Telde, 21 September: 13.4 µg/m³Telde, 22 September: 7.0 µg/m³Telde, 23 September: 3.0 µg/m³Telde, 24 September: 1.6 µg/m³San IsidroSan Isidro, 13 September: 11.3 µg/m³San Isidro, 14 September: 12.5 µg/m³San Isidro, 15 September: 15.1 µg/m³San Isidro, 16 September: 16.0 µg/m³San Isidro, 17 September: 27.1 µg/m³, 3.3× its usual 8.1San Isidro, 18 September: 28.7 µg/m³, 3.5× its usual 8.3San Isidro, 19 September: 22.5 µg/m³San Isidro, 20 September: 24.3 µg/m³San Isidro, 21 September: 24.0 µg/m³San Isidro, 22 September: 14.3 µg/m³San Isidro, 23 September: 9.2 µg/m³San Isidro, 24 September: 7.4 µg/m³Santa Cruz de Tener…Santa Cruz de Tenerife, 13 September: 5.9 µg/m³Santa Cruz de Tenerife, 14 September: 7.4 µg/m³Santa Cruz de Tenerife, 15 September: 8.7 µg/m³Santa Cruz de Tenerife, 16 September: 10.8 µg/m³Santa Cruz de Tenerife, 17 September: 18.8 µg/m³Santa Cruz de Tenerife, 18 September: 19.3 µg/m³Santa Cruz de Tenerife, 19 September: 30.5 µg/m³, 5.5× its usual 5.5Santa Cruz de Tenerife, 20 September: 13.3 µg/m³Santa Cruz de Tenerife, 21 September: 13.4 µg/m³Santa Cruz de Tenerife, 22 September: 7.1 µg/m³Santa Cruz de Tenerife, 23 September: 3.8 µg/m³Santa Cruz de Tenerife, 24 September: 3.3 µg/m³13 Sep1517192123
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
Santa LucíaCanary Islands, Spain4 70.717 September4.414×
San Sebastián de la GomeraCanary Islands, Spain3 85.817 September6.314×
IngenioCanary Islands, Spain6 94.717 September9.011×
Granadilla de AbonaCanary Islands, Spain2 63.317 September6.210×
AgüimesCanary Islands, Spain6 89.717 September10.68.5×
VecindarioCanary Islands, Spain6 89.717 September10.68.5×
La OrotavaCanary Islands, Spain2 38.818 September5.07.8×
MaspalomasCanary Islands, Spain6 69.017 September9.37.4×
Lomo de AricoCanary Islands, Spain2 46.317 September6.96.7×
AronaCanary Islands, Spain2 31.817 September4.76.4×
Santa Cruz de TenerifeCanary Islands, Spain1 30.519 September5.55.5×
TeldeCanary Islands, Spain1 27.317 September3.65.5×
ArucasCanary Islands, Spain1 33.617 September6.94.9×
San IsidroCanary Islands, Spain2 28.718 September8.33.5×

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 23 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, Canary Islands, Spain, September 2025: 14 cities with PM2.5 at twice their usual or more, 16 to 21 September 2025, smogrank.com/episodes/2025-09-canary-islands-spain (accessed 5 October 2026).

Download top 10 (PNG)

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. Fire detections from NASA FIRMS; smoke maps from NOAA HMS.