SmogRank / Episodes / Spain

Canary Islands, Spain, October 2023

For 2 days, from 7 to 8 October 2023, 12 cities in Spain had PM2.5 at least twice their usual for the time of year. The worst reading was La Orotava, Canary Islands, Spain: 47.7 µg/m³ on 8 October, about 9.5× its usual 4.6.

No cause namedWe have no fire or smoke records for these days, so we only say what the measurements show.
Cities reached12in 1 country
Days27 to 8 October 2023
Worst day8 October11 cities counted
Furthest above usual9.5×La Orotava

Day by day

8 October 11 cities at twice their usual or more
TeldeAronaPuerto del RosarioIngenioArucasCandelariaAgüimesMaspalomasSan IsidroArrecifeGranadilla de AbonaSanta Cruz de la PalmaLas Palmas de Gran CanariaSanta Cruz de TenerifeLa Orotava
4 Oct567891011
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

MaspalomasMaspalomas, 4 October: 9.4 µg/m³, 1.0× usualMaspalomas, 5 October: 9.9 µg/m³, 1.1× usualMaspalomas, 6 October: 10.1 µg/m³, 1.1× usualMaspalomas, 7 October: 43.6 µg/m³, 4.7× usualMaspalomas, 8 October: 31.5 µg/m³, 3.4× usualMaspalomas, 9 October: 17.5 µg/m³, 1.9× usualMaspalomas, 10 October: no readingMaspalomas, 11 October: no readingAgüimesAgüimes, 4 October: 8.5 µg/m³, 1.0× usualAgüimes, 5 October: 9.1 µg/m³, 1.0× usualAgüimes, 6 October: 11.1 µg/m³, 1.2× usualAgüimes, 7 October: 39.0 µg/m³, 4.4× usualAgüimes, 8 October: 34.5 µg/m³, 3.9× usualAgüimes, 9 October: 17.6 µg/m³, 2.0× usualAgüimes, 10 October: no readingAgüimes, 11 October: no readingIngenioIngenio, 4 October: 4.0 µg/m³, 0.4× usualIngenio, 5 October: no readingIngenio, 6 October: 6.8 µg/m³, 0.7× usualIngenio, 7 October: 37.0 µg/m³, 3.8× usualIngenio, 8 October: 25.0 µg/m³, 2.6× usualIngenio, 9 October: 16.1 µg/m³, 1.7× usualIngenio, 10 October: no readingIngenio, 11 October: no readingArrecifeArrecife, 4 October: 15.9 µg/m³, 2.3× usualArrecife, 5 October: 15.5 µg/m³, 2.3× usualArrecife, 6 October: 18.8 µg/m³, 2.8× usualArrecife, 7 October: 35.1 µg/m³, 5.2× usualArrecife, 8 October: 16.6 µg/m³, 2.4× usualArrecife, 9 October: 13.5 µg/m³, 2.0× usualArrecife, 10 October: no readingArrecife, 11 October: no readingLas Palmas de Gran …Las Palmas de Gran Canaria, 4 October: 19.1 µg/m³, 3.2× usualLas Palmas de Gran Canaria, 5 October: 17.9 µg/m³, 3.0× usualLas Palmas de Gran Canaria, 6 October: 17.8 µg/m³, 3.0× usualLas Palmas de Gran Canaria, 7 October: 31.2 µg/m³, 5.3× usualLas Palmas de Gran Canaria, 8 October: 47.6 µg/m³, 8.1× usualLas Palmas de Gran Canaria, 9 October: 24.8 µg/m³, 4.2× usualLas Palmas de Gran Canaria, 10 October: no readingLas Palmas de Gran Canaria, 11 October: no readingSanta Cruz de Tener…Santa Cruz de Tenerife, 4 October: 17.2 µg/m³, 3.2× usualSanta Cruz de Tenerife, 5 October: 14.7 µg/m³, 2.8× usualSanta Cruz de Tenerife, 6 October: 16.8 µg/m³, 3.2× usualSanta Cruz de Tenerife, 7 October: 30.8 µg/m³, 5.8× usualSanta Cruz de Tenerife, 8 October: 44.1 µg/m³, 8.3× usualSanta Cruz de Tenerife, 9 October: 27.5 µg/m³, 5.2× usualSanta Cruz de Tenerife, 10 October: no readingSanta Cruz de Tenerife, 11 October: no readingArucasArucas, 4 October: no readingArucas, 5 October: no readingArucas, 6 October: 13.2 µg/m³, 1.9× usualArucas, 7 October: 28.3 µg/m³, 4.1× usualArucas, 8 October: 28.0 µg/m³, 4.1× usualArucas, 9 October: 17.3 µg/m³, 2.5× usualArucas, 10 October: no readingArucas, 11 October: no readingGranadilla de AbonaGranadilla de Abona, 4 October: 15.8 µg/m³, 3.2× usualGranadilla de Abona, 5 October: 14.6 µg/m³, 2.9× usualGranadilla de Abona, 6 October: 15.9 µg/m³, 3.2× usualGranadilla de Abona, 7 October: 27.5 µg/m³, 5.5× usualGranadilla de Abona, 8 October: 33.0 µg/m³, 6.6× usualGranadilla de Abona, 9 October: 23.6 µg/m³, 4.7× usualGranadilla de Abona, 10 October: no readingGranadilla de Abona, 11 October: no readingLa OrotavaLa Orotava, 4 October: 16.7 µg/m³, 3.3× usualLa Orotava, 5 October: 14.0 µg/m³, 2.8× usualLa Orotava, 6 October: 13.0 µg/m³, 2.6× usualLa Orotava, 7 October: 25.5 µg/m³, 5.1× usualLa Orotava, 8 October: 47.7 µg/m³, 9.5× usualLa Orotava, 9 October: 36.1 µg/m³, 7.2× usualLa Orotava, 10 October: no readingLa Orotava, 11 October: no readingSanta Cruz de la Pa…Santa Cruz de la Palma, 4 October: 15.4 µg/m³, 3.1× usualSanta Cruz de la Palma, 5 October: 13.3 µg/m³, 2.7× usualSanta Cruz de la Palma, 6 October: 13.2 µg/m³, 2.6× usualSanta Cruz de la Palma, 7 October: 18.5 µg/m³, 3.7× usualSanta Cruz de la Palma, 8 October: 33.7 µg/m³, 6.7× usualSanta Cruz de la Palma, 9 October: 25.6 µg/m³, 5.1× usualSanta Cruz de la Palma, 10 October: no readingSanta Cruz de la Palma, 11 October: no readingSan IsidroSan Isidro, 4 October: 14.7 µg/m³, 2.1× usualSan Isidro, 5 October: 11.9 µg/m³, 1.7× usualSan Isidro, 6 October: 15.6 µg/m³, 2.2× usualSan Isidro, 7 October: 22.9 µg/m³, 3.3× usualSan Isidro, 8 October: 33.4 µg/m³, 4.8× usualSan Isidro, 9 October: 20.8 µg/m³, 3.0× usualSan Isidro, 10 October: no readingSan Isidro, 11 October: no readingCandelariaCandelaria, 4 October: 12.2 µg/m³, 1.9× usualCandelaria, 5 October: 12.8 µg/m³, 2.0× usualCandelaria, 6 October: 16.0 µg/m³, 2.5× usualCandelaria, 7 October: 24.5 µg/m³, 3.9× usualCandelaria, 8 October: 27.9 µg/m³, 4.4× usualCandelaria, 9 October: 22.1 µg/m³, 3.5× usualCandelaria, 10 October: no readingCandelaria, 11 October: no reading4 Oct567891011
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
La OrotavaCanary Islands, Spain2 47.78 October4.69.5×
Santa Cruz de TenerifeCanary Islands, Spain2 44.18 October5.38.3×
Las Palmas de Gran CanariaCanary Islands, Spain2 47.68 October5.98.1×
Santa Cruz de la PalmaCanary Islands, Spain1 33.78 October4.66.7×
Granadilla de AbonaCanary Islands, Spain2 33.08 October4.06.6×
ArrecifeCanary Islands, Spain1 35.17 October6.85.2×
San IsidroCanary Islands, Spain1 33.48 October7.04.8×
MaspalomasCanary Islands, Spain2 43.67 October9.34.7×
CandelariaCanary Islands, Spain1 27.98 October6.34.4×
AgüimesCanary Islands, Spain2 39.07 October8.94.4×
ArucasCanary Islands, Spain2 28.37 October6.94.1×
IngenioCanary Islands, Spain2 37.07 October9.73.8×

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 9 of 12 episodes in Spain since our records began, by cities reached.

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

Use this page

SmogRank, Canary Islands, Spain, October 2023: 12 cities with PM2.5 at twice their usual or more, 7 to 8 October 2023, smogrank.com/episodes/2023-10-canary-islands-spain (accessed 2 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.