SmogRank / Episodes / Chile

Southern Chile, 29 June to 4 July 2025

For 6 days, from 29 June to 4 July 2025, 17 cities in Chile had PM2.5 at least twice their usual for the time of year. The worst reading was Osorno, Los Lagos Region, Chile: 290.5 µg/m³ on 2 July, about 5.0× its usual 58.1.

No cause namedWe have no fire or smoke records for these days, so we only say what the measurements show.
Cities reached17in 1 country
Days629 June to 4 July 2025
Worst day2 July11 cities counted
Furthest above usual5.9×Los Ángeles

Day by day

2 July 11 cities at twice their usual or more
LotaChiguayanteConcepciónSan Pedro de la PazHualpénTalcahuanoToméCauquenesCuricóCoronelHualquiNacimientoTalcaLa UniónTemucoVillarricaCuranilahuePuerto MonttPuerto VarasValdiviaLinaresOsornoSan CarlosChillánLos Ángeles
26 Jun272829301 Jul234567
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

Puerto VarasPuerto Varas, 26 June: 48.4 µg/m³Puerto Varas, 27 June: 71.3 µg/m³Puerto Varas, 28 June: 109.0 µg/m³Puerto Varas, 29 June: 161.0 µg/m³, 2.9× its usual 55.5Puerto Varas, 30 June: 189.0 µg/m³, 3.4× its usual 55.5Puerto Varas, 1 July: 97.9 µg/m³Puerto Varas, 2 July: 32.3 µg/m³Puerto Varas, 3 July: 28.3 µg/m³Puerto Varas, 4 July: 46.8 µg/m³Puerto Varas, 5 July: 75.3 µg/m³Puerto Varas, 6 July: 90.3 µg/m³Puerto Varas, 7 July: 25.7 µg/m³CuranilahueCuranilahue, 26 June: 54.9 µg/m³Curanilahue, 27 June: 60.1 µg/m³Curanilahue, 28 June: 63.0 µg/m³Curanilahue, 29 June: 114.0 µg/m³, 2.2× its usual 51.3Curanilahue, 30 June: 165.0 µg/m³, 3.2× its usual 51.6Curanilahue, 1 July: no readingCuranilahue, 2 July: no readingCuranilahue, 3 July: 103.0 µg/m³Curanilahue, 4 July: 99.9 µg/m³Curanilahue, 5 July: 85.5 µg/m³Curanilahue, 6 July: 29.2 µg/m³Curanilahue, 7 July: 28.7 µg/m³LinaresLinares, 26 June: 84.4 µg/m³Linares, 27 June: 104.0 µg/m³Linares, 28 June: 136.0 µg/m³Linares, 29 June: 112.0 µg/m³, 2.2× its usual 50.8Linares, 30 June: 140.0 µg/m³, 2.8× its usual 50.8Linares, 1 July: 142.0 µg/m³, 2.8× its usual 50.8Linares, 2 July: 179.0 µg/m³, 3.4× its usual 52.0Linares, 3 July: 214.0 µg/m³, 4.1× its usual 52.4Linares, 4 July: 180.0 µg/m³, 3.5× its usual 52.0Linares, 5 July: 90.8 µg/m³Linares, 6 July: 25.6 µg/m³Linares, 7 July: 33.8 µg/m³La UniónLa Unión, 26 June: 70.3 µg/m³La Unión, 27 June: 79.7 µg/m³La Unión, 28 June: 58.4 µg/m³La Unión, 29 June: 110.0 µg/m³, 2.4× its usual 46.5La Unión, 30 June: 142.0 µg/m³, 3.1× its usual 46.5La Unión, 1 July: 120.0 µg/m³, 2.5× its usual 48.4La Unión, 2 July: 110.0 µg/m³, 2.3× its usual 48.8La Unión, 3 July: 43.8 µg/m³La Unión, 4 July: 49.6 µg/m³La Unión, 5 July: 40.3 µg/m³La Unión, 6 July: 37.1 µg/m³La Unión, 7 July: 20.4 µg/m³ValdiviaValdivia, 26 June: 37.1 µg/m³Valdivia, 27 June: 36.3 µg/m³Valdivia, 28 June: 65.8 µg/m³Valdivia, 29 June: 100.9 µg/m³, 2.4× its usual 42.9Valdivia, 30 June: 113.1 µg/m³, 2.7× its usual 41.8Valdivia, 1 July: 111.8 µg/m³, 2.6× its usual 43.4Valdivia, 2 July: 156.5 µg/m³, 3.6× its usual 43.1Valdivia, 3 July: 154.0 µg/m³, 3.5× its usual 43.5Valdivia, 4 July: 84.6 µg/m³Valdivia, 5 July: 49.2 µg/m³Valdivia, 6 July: 71.6 µg/m³Valdivia, 7 July: 38.0 µg/m³Puerto MonttPuerto Montt, 26 June: 46.9 µg/m³Puerto Montt, 27 June: 47.5 µg/m³Puerto Montt, 28 June: 58.7 µg/m³Puerto Montt, 29 June: 85.7 µg/m³, 2.1× its usual 41.1Puerto Montt, 30 June: 141.0 µg/m³, 3.4× its usual 41.1Puerto Montt, 1 July: 79.8 µg/m³Puerto Montt, 2 July: 37.3 µg/m³Puerto Montt, 3 July: 27.0 µg/m³Puerto Montt, 4 July: 23.8 µg/m³Puerto Montt, 5 July: 62.0 µg/m³Puerto Montt, 6 July: 42.6 µg/m³Puerto Montt, 7 July: 30.5 µg/m³Los ÁngelesLos Ángeles, 26 June: 100.2 µg/m³Los Ángeles, 27 June: 66.5 µg/m³Los Ángeles, 28 June: 53.9 µg/m³Los Ángeles, 29 June: 71.7 µg/m³, 2.0× its usual 35.7Los Ángeles, 30 June: 33.8 µg/m³Los Ángeles, 1 July: 64.9 µg/m³Los Ángeles, 2 July: 157.5 µg/m³, 4.4× its usual 35.7Los Ángeles, 3 July: 216.0 µg/m³, 5.9× its usual 36.5Los Ángeles, 4 July: 63.7 µg/m³Los Ángeles, 5 July: 111.7 µg/m³Los Ángeles, 6 July: 25.2 µg/m³Los Ángeles, 7 July: 21.7 µg/m³OsornoOsorno, 26 June: 51.9 µg/m³Osorno, 27 June: 49.8 µg/m³Osorno, 28 June: 58.0 µg/m³Osorno, 29 June: 111.5 µg/m³Osorno, 30 June: 211.0 µg/m³, 3.8× its usual 55.9Osorno, 1 July: 218.5 µg/m³, 3.8× its usual 57.5Osorno, 2 July: 290.5 µg/m³, 5.0× its usual 58.1Osorno, 3 July: 118.4 µg/m³, 2.0× its usual 58.1Osorno, 4 July: 66.1 µg/m³Osorno, 5 July: 47.6 µg/m³Osorno, 6 July: 72.4 µg/m³Osorno, 7 July: 41.8 µg/m³TemucoTemuco, 26 June: 33.8 µg/m³Temuco, 27 June: 39.7 µg/m³Temuco, 28 June: 55.3 µg/m³Temuco, 29 June: 88.7 µg/m³Temuco, 30 June: 130.0 µg/m³, 2.4× its usual 53.4Temuco, 1 July: 127.0 µg/m³, 2.3× its usual 55.0Temuco, 2 July: 137.0 µg/m³, 2.4× its usual 56.2Temuco, 3 July: 169.0 µg/m³, 3.1× its usual 55.0Temuco, 4 July: 167.0 µg/m³, 3.1× its usual 53.9Temuco, 5 July: 120.0 µg/m³Temuco, 6 July: 23.3 µg/m³Temuco, 7 July: 22.5 µg/m³San CarlosSan Carlos, 26 June: 91.7 µg/m³San Carlos, 27 June: 96.6 µg/m³San Carlos, 28 June: 75.2 µg/m³San Carlos, 29 June: 68.7 µg/m³San Carlos, 30 June: 51.8 µg/m³San Carlos, 1 July: 84.3 µg/m³, 2.0× its usual 41.3San Carlos, 2 July: 184.0 µg/m³, 4.3× its usual 42.3San Carlos, 3 July: 213.0 µg/m³, 5.1× its usual 41.4San Carlos, 4 July: 83.9 µg/m³San Carlos, 5 July: 78.3 µg/m³San Carlos, 6 July: 19.0 µg/m³San Carlos, 7 July: 24.3 µg/m³TalcaTalca, 26 June: 64.9 µg/m³Talca, 27 June: 91.5 µg/m³Talca, 28 June: 69.8 µg/m³Talca, 29 June: 60.0 µg/m³Talca, 30 June: 67.9 µg/m³Talca, 1 July: 83.9 µg/m³, 2.1× its usual 40.1Talca, 2 July: 103.0 µg/m³, 2.5× its usual 41.2Talca, 3 July: 106.0 µg/m³, 2.5× its usual 42.1Talca, 4 July: 100.0 µg/m³, 2.4× its usual 42.5Talca, 5 July: 68.1 µg/m³Talca, 6 July: 29.0 µg/m³Talca, 7 July: 35.0 µg/m³VillarricaVillarrica, 26 June: 30.4 µg/m³Villarrica, 27 June: 38.0 µg/m³Villarrica, 28 June: 56.4 µg/m³Villarrica, 29 June: no readingVillarrica, 30 June: no readingVillarrica, 1 July: no readingVillarrica, 2 July: 190.0 µg/m³, 3.0× its usual 63.8Villarrica, 3 July: 192.0 µg/m³, 3.1× its usual 62.1Villarrica, 4 July: 138.0 µg/m³, 2.3× its usual 60.5Villarrica, 5 July: 63.7 µg/m³Villarrica, 6 July: 24.4 µg/m³Villarrica, 7 July: 30.9 µg/m³ChillánChillán, 26 June: 71.0 µg/m³Chillán, 27 June: 93.0 µg/m³Chillán, 28 June: 68.0 µg/m³Chillán, 29 June: 67.7 µg/m³Chillán, 30 June: 53.0 µg/m³Chillán, 1 July: 73.2 µg/m³Chillán, 2 July: 172.0 µg/m³, 4.3× its usual 40.4Chillán, 3 July: 237.5 µg/m³, 5.8× its usual 40.6Chillán, 4 July: 87.8 µg/m³, 2.2× its usual 40.7Chillán, 5 July: 91.4 µg/m³Chillán, 6 July: 22.7 µg/m³Chillán, 7 July: 25.9 µg/m³HualquiHualqui, 26 June: 73.1 µg/m³Hualqui, 27 June: 69.7 µg/m³Hualqui, 28 June: 59.4 µg/m³Hualqui, 29 June: 58.8 µg/m³Hualqui, 30 June: 68.3 µg/m³Hualqui, 1 July: 74.6 µg/m³Hualqui, 2 July: 93.1 µg/m³, 2.0× its usual 45.8Hualqui, 3 July: 98.1 µg/m³, 2.1× its usual 45.8Hualqui, 4 July: 88.8 µg/m³Hualqui, 5 July: 88.4 µg/m³Hualqui, 6 July: 35.0 µg/m³Hualqui, 7 July: 35.7 µg/m³NacimientoNacimiento, 26 June: 101.0 µg/m³Nacimiento, 27 June: 86.0 µg/m³Nacimiento, 28 June: 124.7 µg/m³Nacimiento, 29 June: 116.9 µg/m³Nacimiento, 30 June: 96.4 µg/m³Nacimiento, 1 July: 107.6 µg/m³Nacimiento, 2 July: 139.5 µg/m³Nacimiento, 3 July: 169.0 µg/m³, 2.4× its usual 71.2Nacimiento, 4 July: 156.5 µg/m³, 2.2× its usual 71.5Nacimiento, 5 July: 94.4 µg/m³Nacimiento, 6 July: 54.0 µg/m³Nacimiento, 7 July: 80.3 µg/m³CuricóCuricó, 26 June: 46.3 µg/m³Curicó, 27 June: 76.5 µg/m³Curicó, 28 June: 81.2 µg/m³Curicó, 29 June: no readingCuricó, 30 June: no readingCuricó, 1 July: 95.7 µg/m³Curicó, 2 July: 83.3 µg/m³Curicó, 3 July: 113.0 µg/m³Curicó, 4 July: 115.0 µg/m³, 2.0× its usual 57.3Curicó, 5 July: 68.3 µg/m³Curicó, 6 July: 38.5 µg/m³Curicó, 7 July: 52.8 µg/m³CoronelCoronel, 26 June: 52.8 µg/m³Coronel, 27 June: 53.7 µg/m³Coronel, 28 June: 70.8 µg/m³Coronel, 29 June: 45.7 µg/m³Coronel, 30 June: 56.5 µg/m³Coronel, 1 July: 70.3 µg/m³Coronel, 2 July: 83.3 µg/m³Coronel, 3 July: 89.8 µg/m³Coronel, 4 July: 94.6 µg/m³, 2.1× its usual 45.9Coronel, 5 July: 75.5 µg/m³Coronel, 6 July: 24.5 µg/m³Coronel, 7 July: 33.5 µg/m³26 Jun28301 Jul246
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
Los ÁngelesBiobio, Chile3 216.03 July36.55.9×
ChillánÑuble, Chile3 237.53 July40.65.8×
San CarlosÑuble, Chile3 213.03 July41.45.1×
OsornoLos Lagos Region, Chile4 290.52 July58.15.0×
LinaresMaule Region, Chile6 214.03 July52.44.1×
ValdiviaLos Ríos Region, Chile5 156.52 July43.13.6×
Puerto VarasLos Lagos Region, Chile2 189.030 June55.53.4×
Puerto MonttLos Lagos Region, Chile2 141.030 June41.13.4×
CuranilahueBiobio, Chile2 165.030 June51.63.2×
VillarricaAraucania, Chile3 192.03 July62.13.1×
TemucoAraucania, Chile5 169.03 July55.03.1×
La UniónLos Ríos Region, Chile4 142.030 June46.53.1×
TalcaMaule Region, Chile4 106.03 July42.12.5×
NacimientoBiobio, Chile2 169.03 July71.22.4×
HualquiBiobio, Chile2 98.13 July45.82.1×
CoronelBiobio, Chile1 94.64 July45.92.1×
CuricóMaule Region, Chile1 115.04 July57.32.0×

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 Chile

Number 6 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, Southern Chile, 29 June to 4 July 2025: 17 cities with PM2.5 at twice their usual or more, 29 June to 4 July 2025, smogrank.com/episodes/2025-06-29-southern-chile (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.