SmogRank / Episodes / Chile

Southern Chile, 2 to 4 June 2025

For 3 days, from 2 to 4 June 2025, 9 cities in Chile had PM2.5 at least twice their usual for the time of year. The worst reading was San Carlos, Ñuble, Chile: 139.0 µg/m³ on 2 June, about 2.9× its usual 48.5.

No cause namedWe have no fire or smoke records for these days, so we only say what the measurements show.
Cities reached9in 1 country
Days32 to 4 June 2025
Worst day3 June6 cities counted
Furthest above usual3.1×Los Ángeles

Day by day

3 June 6 cities at twice their usual or more
NacimientoChiguayanteConcepciónToméSan Pedro de la PazCoronelLotaHualpénTalcahuanoCuranilahueTemucoCuricóTalcaHualquiLinaresChillánCauquenesVillarricaSan CarlosLos Ángeles
30 May311 Jun234567
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

San CarlosSan Carlos, 30 May: 35.9 µg/m³San Carlos, 31 May: 28.5 µg/m³San Carlos, 1 June: 58.9 µg/m³San Carlos, 2 June: 139.0 µg/m³, 2.9× its usual 48.5San Carlos, 3 June: 81.6 µg/m³San Carlos, 4 June: 112.0 µg/m³, 2.4× its usual 46.5San Carlos, 5 June: 153.0 µg/m³San Carlos, 6 June: 43.9 µg/m³San Carlos, 7 June: 46.1 µg/m³Los ÁngelesLos Ángeles, 30 May: 43.3 µg/m³Los Ángeles, 31 May: 22.5 µg/m³Los Ángeles, 1 June: 36.5 µg/m³Los Ángeles, 2 June: 124.4 µg/m³, 3.1× its usual 40.6Los Ángeles, 3 June: 95.8 µg/m³, 2.4× its usual 39.8Los Ángeles, 4 June: 104.2 µg/m³, 2.6× its usual 40.6Los Ángeles, 5 June: 41.1 µg/m³Los Ángeles, 6 June: 37.7 µg/m³Los Ángeles, 7 June: 58.1 µg/m³LinaresLinares, 30 May: 123.0 µg/m³Linares, 31 May: 42.6 µg/m³Linares, 1 June: 74.4 µg/m³Linares, 2 June: 109.0 µg/m³, 2.0× its usual 54.4Linares, 3 June: 105.0 µg/m³Linares, 4 June: 120.0 µg/m³, 2.3× its usual 53.1Linares, 5 June: 99.5 µg/m³Linares, 6 June: 44.2 µg/m³Linares, 7 June: 51.4 µg/m³ChillánChillán, 30 May: 32.7 µg/m³Chillán, 31 May: 29.0 µg/m³Chillán, 1 June: 42.1 µg/m³Chillán, 2 June: 95.1 µg/m³, 2.1× its usual 45.8Chillán, 3 June: 97.4 µg/m³, 2.2× its usual 44.4Chillán, 4 June: 108.8 µg/m³, 2.5× its usual 43.4Chillán, 5 June: 106.0 µg/m³Chillán, 6 June: 63.1 µg/m³Chillán, 7 June: 47.5 µg/m³VillarricaVillarrica, 30 May: 60.3 µg/m³Villarrica, 31 May: 94.5 µg/m³Villarrica, 1 June: 79.2 µg/m³Villarrica, 2 June: 52.5 µg/m³Villarrica, 3 June: 124.0 µg/m³, 2.9× its usual 43.4Villarrica, 4 June: 65.9 µg/m³Villarrica, 5 June: 44.3 µg/m³Villarrica, 6 June: 39.9 µg/m³Villarrica, 7 June: 92.1 µg/m³CuricóCuricó, 30 May: 74.5 µg/m³Curicó, 31 May: 40.0 µg/m³Curicó, 1 June: 50.4 µg/m³Curicó, 2 June: 95.8 µg/m³Curicó, 3 June: 113.0 µg/m³, 2.0× its usual 56.5Curicó, 4 June: 87.1 µg/m³Curicó, 5 June: 79.7 µg/m³Curicó, 6 June: 56.5 µg/m³Curicó, 7 June: 54.8 µg/m³CauquenesCauquenes, 30 May: 31.9 µg/m³Cauquenes, 31 May: 29.4 µg/m³Cauquenes, 1 June: 55.0 µg/m³Cauquenes, 2 June: 61.3 µg/m³Cauquenes, 3 June: 98.9 µg/m³, 2.4× its usual 40.5Cauquenes, 4 June: 114.0 µg/m³, 2.8× its usual 40.3Cauquenes, 5 June: 67.8 µg/m³Cauquenes, 6 June: 58.3 µg/m³Cauquenes, 7 June: 56.9 µg/m³HualquiHualqui, 30 May: 60.8 µg/m³Hualqui, 31 May: 65.0 µg/m³Hualqui, 1 June: 66.4 µg/m³Hualqui, 2 June: 80.4 µg/m³Hualqui, 3 June: 97.8 µg/m³, 2.2× its usual 44.3Hualqui, 4 June: 72.5 µg/m³Hualqui, 5 June: 63.5 µg/m³Hualqui, 6 June: 53.6 µg/m³Hualqui, 7 June: 56.3 µg/m³TalcaTalca, 30 May: 64.7 µg/m³Talca, 31 May: 29.1 µg/m³Talca, 1 June: 41.2 µg/m³Talca, 2 June: 64.9 µg/m³Talca, 3 June: 82.1 µg/m³Talca, 4 June: 89.5 µg/m³, 2.1× its usual 43.3Talca, 5 June: 85.0 µg/m³Talca, 6 June: 42.4 µg/m³Talca, 7 June: 43.3 µg/m³30 May311 Jun234567
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 124.42 June40.63.1×
San CarlosÑuble, Chile2 139.02 June48.52.9×
VillarricaAraucania, Chile1 124.03 June43.42.9×
CauquenesMaule Region, Chile2 114.04 June40.32.8×
ChillánÑuble, Chile3 108.84 June43.42.5×
LinaresMaule Region, Chile2 120.04 June53.12.3×
HualquiBiobio, Chile1 97.83 June44.32.2×
TalcaMaule Region, Chile1 89.54 June43.32.1×
CuricóMaule Region, Chile1 113.03 June56.52.0×

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 22 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, 2 to 4 June 2025: 9 cities with PM2.5 at twice their usual or more, 2 to 4 June 2025, smogrank.com/episodes/2025-06-02-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.