SmogRank / Episodes / Spain
Canary Islands, Spain, 11 to 13 December 2023
For 3 days, from 11 to 13 December 2023, 15 cities in Spain had PM2.5 at least twice their usual for the time of year. The worst reading was Granadilla de Abona, Canary Islands, Spain: 89.2 µg/m³ on 13 December, about 16× its usual 5.5.
No cause named We have no fire or smoke records for these days, so we only say what the measurements show.
Cities reached 15 in 1 country
Days 3 11 to 13 December 2023
Worst day 12 December 14 cities counted
Furthest above usual 16× Granadilla de Abona
Day by day
Play 12 December 14 cities at twice their usual or more
Puerto del Rosario Arrecife Arucas Santa Cruz de la Palma Las Palmas de Gran Canaria San Isidro Candelaria Agüimes Maspalomas Santa Cruz de Tenerife Arona Ingenio La Orotava Telde Granadilla de Abona 8 Dec 9 10 11 12 13 14 15 16 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
Las Palmas de Gran … Las Palmas de Gran Canaria, 8 December: 6.0 µg/m³ Las Palmas de Gran Canaria, 9 December: 9.3 µg/m³ Las Palmas de Gran Canaria, 10 December: 10.4 µg/m³ Las Palmas de Gran Canaria, 11 December: 36.0 µg/m³, 5.1× its usual 7.0 Las Palmas de Gran Canaria, 12 December: 54.3 µg/m³, 7.9× its usual 6.9 Las Palmas de Gran Canaria, 13 December: 64.9 µg/m³, 9.4× its usual 6.9 Las Palmas de Gran Canaria, 14 December: 14.6 µg/m³ Las Palmas de Gran Canaria, 15 December: 14.1 µg/m³ Las Palmas de Gran Canaria, 16 December: 55.1 µg/m³ Santa Cruz de Tener… Santa Cruz de Tenerife, 8 December: 5.4 µg/m³ Santa Cruz de Tenerife, 9 December: 7.6 µg/m³ Santa Cruz de Tenerife, 10 December: 10.8 µg/m³ Santa Cruz de Tenerife, 11 December: 35.7 µg/m³, 4.7× its usual 7.6 Santa Cruz de Tenerife, 12 December: 50.0 µg/m³, 6.7× its usual 7.5 Santa Cruz de Tenerife, 13 December: 80.3 µg/m³, 11× its usual 7.6 Santa Cruz de Tenerife, 14 December: 18.6 µg/m³ Santa Cruz de Tenerife, 15 December: 10.2 µg/m³ Santa Cruz de Tenerife, 16 December: 44.0 µg/m³ Maspalomas Maspalomas, 8 December: 3.7 µg/m³ Maspalomas, 9 December: 5.0 µg/m³ Maspalomas, 10 December: 6.1 µg/m³ Maspalomas, 11 December: 34.8 µg/m³, 4.2× its usual 8.2 Maspalomas, 12 December: 41.1 µg/m³, 5.1× its usual 8.0 Maspalomas, 13 December: 81.2 µg/m³, 10× its usual 8.0 Maspalomas, 14 December: 15.9 µg/m³ Maspalomas, 15 December: 9.1 µg/m³ Maspalomas, 16 December: 43.4 µg/m³ Arrecife Arrecife, 8 December: 7.6 µg/m³ Arrecife, 9 December: 9.9 µg/m³ Arrecife, 10 December: 14.3 µg/m³ Arrecife, 11 December: 34.8 µg/m³, 5.0× its usual 6.9 Arrecife, 12 December: 33.4 µg/m³, 5.1× its usual 6.6 Arrecife, 13 December: no reading Arrecife, 14 December: no reading Arrecife, 15 December: 22.0 µg/m³ Arrecife, 16 December: 70.4 µg/m³ Agüimes Agüimes, 8 December: 3.5 µg/m³ Agüimes, 9 December: 5.0 µg/m³ Agüimes, 10 December: 7.7 µg/m³ Agüimes, 11 December: 32.4 µg/m³, 4.1× its usual 7.9 Agüimes, 12 December: 40.5 µg/m³, 5.3× its usual 7.7 Agüimes, 13 December: 75.8 µg/m³, 9.8× its usual 7.7 Agüimes, 14 December: 13.1 µg/m³ Agüimes, 15 December: 8.7 µg/m³ Agüimes, 16 December: 40.8 µg/m³ San Isidro San Isidro, 8 December: 8.1 µg/m³ San Isidro, 9 December: 9.5 µg/m³ San Isidro, 10 December: 9.7 µg/m³ San Isidro, 11 December: 29.6 µg/m³, 4.6× its usual 6.5 San Isidro, 12 December: 37.7 µg/m³, 6.0× its usual 6.3 San Isidro, 13 December: 61.6 µg/m³, 9.8× its usual 6.3 San Isidro, 14 December: 17.5 µg/m³ San Isidro, 15 December: 11.5 µg/m³ San Isidro, 16 December: 30.5 µg/m³ Granadilla de Abona Granadilla de Abona, 8 December: 5.0 µg/m³ Granadilla de Abona, 9 December: 5.0 µg/m³ Granadilla de Abona, 10 December: 8.8 µg/m³ Granadilla de Abona, 11 December: 28.9 µg/m³, 5.3× its usual 5.5 Granadilla de Abona, 12 December: 44.5 µg/m³, 8.1× its usual 5.5 Granadilla de Abona, 13 December: 89.2 µg/m³, 16× its usual 5.5 Granadilla de Abona, 14 December: 21.7 µg/m³ Granadilla de Abona, 15 December: 7.1 µg/m³ Granadilla de Abona, 16 December: 31.8 µg/m³ Ingenio Ingenio, 8 December: no reading Ingenio, 9 December: no reading Ingenio, 10 December: 2.3 µg/m³ Ingenio, 11 December: 27.9 µg/m³, 4.4× its usual 6.3 Ingenio, 12 December: 42.9 µg/m³, 6.6× its usual 6.5 Ingenio, 13 December: 71.2 µg/m³, 11× its usual 6.6 Ingenio, 14 December: 7.1 µg/m³ Ingenio, 15 December: 4.8 µg/m³ Ingenio, 16 December: 36.8 µg/m³ Candelaria Candelaria, 8 December: 2.8 µg/m³ Candelaria, 9 December: 3.4 µg/m³ Candelaria, 10 December: 7.4 µg/m³ Candelaria, 11 December: 27.5 µg/m³, 4.1× its usual 6.7 Candelaria, 12 December: 30.3 µg/m³, 4.7× its usual 6.5 Candelaria, 13 December: 66.5 µg/m³, 9.8× its usual 6.8 Candelaria, 14 December: 17.6 µg/m³ Candelaria, 15 December: 8.4 µg/m³ Candelaria, 16 December: 32.6 µg/m³ Puerto del Rosario Puerto del Rosario, 8 December: 8.1 µg/m³ Puerto del Rosario, 9 December: 8.1 µg/m³ Puerto del Rosario, 10 December: 8.0 µg/m³ Puerto del Rosario, 11 December: 27.5 µg/m³, 3.7× its usual 7.4 Puerto del Rosario, 12 December: 24.0 µg/m³ Puerto del Rosario, 13 December: 13.4 µg/m³ Puerto del Rosario, 14 December: 11.6 µg/m³ Puerto del Rosario, 15 December: 14.5 µg/m³ Puerto del Rosario, 16 December: 52.1 µg/m³ Arucas Arucas, 8 December: 11.2 µg/m³ Arucas, 9 December: 9.6 µg/m³ Arucas, 10 December: 10.6 µg/m³ Arucas, 11 December: 27.3 µg/m³, 3.2× its usual 8.6 Arucas, 12 December: 38.5 µg/m³, 4.5× its usual 8.6 Arucas, 13 December: 52.0 µg/m³, 6.0× its usual 8.6 Arucas, 14 December: 13.3 µg/m³ Arucas, 15 December: 11.4 µg/m³ Arucas, 16 December: 34.8 µg/m³ Telde Telde, 8 December: 3.7 µg/m³ Telde, 9 December: 3.9 µg/m³ Telde, 10 December: 6.9 µg/m³ Telde, 11 December: 26.8 µg/m³, 4.6× its usual 5.8 Telde, 12 December: 71.3 µg/m³, 14× its usual 5.0 Telde, 13 December: 49.6 µg/m³, 9.7× its usual 5.1 Telde, 14 December: 8.8 µg/m³ Telde, 15 December: 7.4 µg/m³ Telde, 16 December: 29.7 µg/m³ La Orotava La Orotava, 8 December: 4.4 µg/m³ La Orotava, 9 December: 7.3 µg/m³ La Orotava, 10 December: 6.5 µg/m³ La Orotava, 11 December: 11.6 µg/m³ La Orotava, 12 December: 42.3 µg/m³, 7.6× its usual 5.6 La Orotava, 13 December: 75.0 µg/m³, 14× its usual 5.5 La Orotava, 14 December: 44.2 µg/m³ La Orotava, 15 December: 7.8 µg/m³ La Orotava, 16 December: 21.1 µg/m³ Arona Arona, 8 December: 4.0 µg/m³ Arona, 9 December: 3.5 µg/m³ Arona, 10 December: 6.0 µg/m³ Arona, 11 December: 24.3 µg/m³ Arona, 12 December: 34.2 µg/m³, 6.8× its usual 4.2 Arona, 13 December: 53.9 µg/m³, 11× its usual 4.6 Arona, 14 December: 14.7 µg/m³ Arona, 15 December: 5.3 µg/m³ Arona, 16 December: 23.4 µg/m³ Santa Cruz de la Pa… Santa Cruz de la Palma, 8 December: 3.5 µg/m³ Santa Cruz de la Palma, 9 December: 5.2 µg/m³ Santa Cruz de la Palma, 10 December: 5.8 µg/m³ Santa Cruz de la Palma, 11 December: 17.4 µg/m³ Santa Cruz de la Palma, 12 December: 31.7 µg/m³, 5.1× its usual 6.2 Santa Cruz de la Palma, 13 December: 51.8 µg/m³, 8.5× its usual 6.1 Santa Cruz de la Palma, 14 December: 18.3 µg/m³ Santa Cruz de la Palma, 15 December: 6.9 µg/m³ Santa Cruz de la Palma, 16 December: 23.5 µg/m³ 8 Dec 9 10 11 12 13 14 15 16 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
Granadilla de Abona Canary Islands, Spain 3 13 December 5.5 16× Telde Canary Islands, Spain 3 12 December 5.0 14× La Orotava Canary Islands, Spain 2 13 December 5.5 14× Ingenio Canary Islands, Spain 3 13 December 6.6 11× Arona Canary Islands, Spain 2 13 December 4.6 11× Santa Cruz de Tenerife Canary Islands, Spain 3 13 December 7.6 11× Maspalomas Canary Islands, Spain 3 13 December 8.0 10× Agüimes Canary Islands, Spain 3 13 December 7.7 9.8× Candelaria Canary Islands, Spain 3 13 December 6.8 9.8× San Isidro Canary Islands, Spain 3 13 December 6.3 9.8× Las Palmas de Gran Canaria Canary Islands, Spain 3 13 December 6.9 9.4× Santa Cruz de la Palma Canary Islands, Spain 2 13 December 6.1 8.5× Arucas Canary Islands, Spain 3 13 December 8.6 6.0× Arrecife Canary Islands, Spain 2 11 December 6.9 5.0× Puerto del Rosario Canary Islands, Spain 1 11 December 7.4 3.7×
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 12 of 34 episodes in Spain since our records began, by cities reached.
Spain, France and Portugal, February 2023 72 Spain, Portugal and Andorra, August 2025 44 Spain, France and 2 more countries, December 2023 to January 2024 44 Southern Europe, February 2024 38 Spain, France and Portugal, January and February 2024 33 Northern 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, 8 to 9 February 2024 15 Canary Islands, Spain, 16 to 17 December 2023 15 Canary Islands, Spain, 11 to 13 December 2023 15 Bars: cities reached; colour: the level of the episode's highest daily reading. All 34 .
Use this page SmogRank, Canary Islands, Spain, 11 to 13 December 2023: 15 cities with PM2.5 at twice their usual or more, 11 to 13 December 2023, smogrank.com/episodes/2023-12-11-canary-islands-spain (accessed 4 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.
