SmogRank / Episodes / Chile

South-western Chile, June 2024

For 2 days, from 24 to 25 June 2024, 9 cities in Chile had PM2.5 at least twice their usual for the time of year. The worst reading was Hualpén, Biobio, Chile: 149.0 µg/m³ on 25 June, about 2.0× its usual 73.4.

No cause namedWe have no fire or smoke records for these days, so we only say what the measurements show.
Cities reached9in 1 country
Days224 to 25 June 2024
Worst day25 June7 cities counted
Furthest above usual3.3×San Carlos

Day by day

25 June 7 cities at twice their usual or more
ValdiviaLa UniónNacimientoCuranilahueLotaCoronelHualquiChiguayanteConcepciónSan Pedro de la PazToméPuerto VarasHualpénOsornoTemucoVillarricaPuerto MonttChillánTalcahuanoLos ÁngelesSan Carlos
21 Jun22232425262728
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

TalcahuanoTalcahuano, 21 June: 16.2 µg/m³, 0.3× usualTalcahuano, 22 June: 26.2 µg/m³, 0.6× usualTalcahuano, 23 June: 92.2 µg/m³, 2.0× usualTalcahuano, 24 June: 130.5 µg/m³, 2.8× usualTalcahuano, 25 June: 115.5 µg/m³, 2.5× usualTalcahuano, 26 June: 42.1 µg/m³, 0.9× usualTalcahuano, 27 June: 18.0 µg/m³, 0.4× usualTalcahuano, 28 June: 38.0 µg/m³, 0.8× usualVillarricaVillarrica, 21 June: 17.8 µg/m³, 0.3× usualVillarrica, 22 June: no readingVillarrica, 23 June: 84.5 µg/m³, 1.5× usualVillarrica, 24 June: 126.0 µg/m³, 2.3× usualVillarrica, 25 June: 113.0 µg/m³, 2.0× usualVillarrica, 26 June: 43.7 µg/m³, 0.8× usualVillarrica, 27 June: 30.6 µg/m³, 0.6× usualVillarrica, 28 June: 75.0 µg/m³, 1.4× usualLos ÁngelesLos Ángeles, 21 June: 12.6 µg/m³, 0.3× usualLos Ángeles, 22 June: 22.3 µg/m³, 0.5× usualLos Ángeles, 23 June: 77.5 µg/m³, 1.9× usualLos Ángeles, 24 June: 121.7 µg/m³, 3.0× usualLos Ángeles, 25 June: 53.8 µg/m³, 1.3× usualLos Ángeles, 26 June: 28.0 µg/m³, 0.7× usualLos Ángeles, 27 June: 20.7 µg/m³, 0.5× usualLos Ángeles, 28 June: 39.5 µg/m³, 1.0× usualChillánChillán, 21 June: 15.6 µg/m³, 0.4× usualChillán, 22 June: 25.9 µg/m³, 0.6× usualChillán, 23 June: 59.9 µg/m³, 1.4× usualChillán, 24 June: 110.0 µg/m³, 2.6× usualChillán, 25 June: 98.2 µg/m³, 2.3× usualChillán, 26 June: 51.2 µg/m³, 1.2× usualChillán, 27 June: 47.3 µg/m³, 1.1× usualChillán, 28 June: 31.2 µg/m³, 0.7× usualSan CarlosSan Carlos, 21 June: no readingSan Carlos, 22 June: 21.5 µg/m³, 0.5× usualSan Carlos, 23 June: 67.9 µg/m³, 1.5× usualSan Carlos, 24 June: 108.0 µg/m³, 2.4× usualSan Carlos, 25 June: 146.0 µg/m³, 3.3× usualSan Carlos, 26 June: 49.8 µg/m³, 1.1× usualSan Carlos, 27 June: 43.8 µg/m³, 1.0× usualSan Carlos, 28 June: 35.8 µg/m³, 0.8× usualHualpénHualpén, 21 June: 32.4 µg/m³, 0.4× usualHualpén, 22 June: 53.5 µg/m³, 0.7× usualHualpén, 23 June: 87.6 µg/m³, 1.2× usualHualpén, 24 June: no readingHualpén, 25 June: 149.0 µg/m³, 2.0× usualHualpén, 26 June: 112.0 µg/m³, 1.5× usualHualpén, 27 June: no readingHualpén, 28 June: no readingOsornoOsorno, 21 June: 23.4 µg/m³, 0.4× usualOsorno, 22 June: 51.5 µg/m³, 0.8× usualOsorno, 23 June: 44.8 µg/m³, 0.7× usualOsorno, 24 June: 81.8 µg/m³, 1.3× usualOsorno, 25 June: 126.5 µg/m³, 2.0× usualOsorno, 26 June: 34.3 µg/m³, 0.6× usualOsorno, 27 June: 27.6 µg/m³, 0.4× usualOsorno, 28 June: 61.2 µg/m³, 1.0× usualTemucoTemuco, 21 June: 20.9 µg/m³, 0.4× usualTemuco, 22 June: 25.6 µg/m³, 0.5× usualTemuco, 23 June: 39.0 µg/m³, 0.7× usualTemuco, 24 June: 77.0 µg/m³, 1.4× usualTemuco, 25 June: 117.0 µg/m³, 2.2× usualTemuco, 26 June: 41.3 µg/m³, 0.8× usualTemuco, 27 June: 21.1 µg/m³, 0.4× usualTemuco, 28 June: 53.9 µg/m³, 1.0× usualPuerto MonttPuerto Montt, 21 June: 17.2 µg/m³, 0.4× usualPuerto Montt, 22 June: 31.9 µg/m³, 0.8× usualPuerto Montt, 23 June: 32.5 µg/m³, 0.8× usualPuerto Montt, 24 June: 46.1 µg/m³, 1.1× usualPuerto Montt, 25 June: 102.2 µg/m³, 2.5× usualPuerto Montt, 26 June: 29.8 µg/m³, 0.7× usualPuerto Montt, 27 June: 38.7 µg/m³, 0.9× usualPuerto Montt, 28 June: 55.8 µg/m³, 1.3× usual21 Jun22232425262728
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
San CarlosÑuble, Chile2 146.025 June44.23.3×
Los ÁngelesBiobio, Chile1 121.724 June40.83.0×
TalcahuanoBiobio, Chile2 130.524 June46.32.8×
ChillánÑuble, Chile2 110.024 June41.82.6×
Puerto MonttLos Lagos Region, Chile1 102.225 June41.72.5×
VillarricaAraucania, Chile1 126.024 June55.52.3×
TemucoAraucania, Chile1 117.025 June53.42.2×
OsornoLos Lagos Region, Chile1 126.525 June61.82.0×
HualpénBiobio, Chile1 149.025 June73.42.0×

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 Chile

Number 24 of 30 episodes in Chile since our records began, by cities reached.

Bars: cities reached; colour: the level of the episode's highest daily reading. All 30.

Use this page

SmogRank, South-western Chile, June 2024: 9 cities with PM2.5 at twice their usual or more, 24 to 25 June 2024, smogrank.com/episodes/2024-06-south-western-chile (accessed 3 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.