SmogRank / Episodes / Chile

Southern Chile, 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×San Carlos

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

LinaresLinares, 30 May: 123.0 µg/m³, 2.3× usualLinares, 31 May: 42.6 µg/m³, 0.8× usualLinares, 1 June: 74.4 µg/m³, 1.4× usualLinares, 2 June: 109.0 µg/m³, 2.1× usualLinares, 3 June: 105.0 µg/m³, 2.0× usualLinares, 4 June: 120.0 µg/m³, 2.3× usualLinares, 5 June: 99.5 µg/m³, 1.9× usualLinares, 6 June: 44.2 µg/m³, 0.8× usualLinares, 7 June: 51.4 µg/m³, 1.0× usualVillarricaVillarrica, 30 May: 60.3 µg/m³, 1.4× usualVillarrica, 31 May: 94.5 µg/m³, 2.2× usualVillarrica, 1 June: 79.2 µg/m³, 1.8× usualVillarrica, 2 June: 52.5 µg/m³, 1.2× usualVillarrica, 3 June: 124.0 µg/m³, 2.9× usualVillarrica, 4 June: 65.9 µg/m³, 1.5× usualVillarrica, 5 June: 44.3 µg/m³, 1.0× usualVillarrica, 6 June: 39.9 µg/m³, 0.9× usualVillarrica, 7 June: 92.1 µg/m³, 2.1× usualSan CarlosSan Carlos, 30 May: 35.9 µg/m³, 0.7× usualSan Carlos, 31 May: 28.5 µg/m³, 0.6× usualSan Carlos, 1 June: 58.9 µg/m³, 1.2× usualSan Carlos, 2 June: 139.0 µg/m³, 2.9× usualSan Carlos, 3 June: 81.6 µg/m³, 1.7× usualSan Carlos, 4 June: 112.0 µg/m³, 2.3× usualSan Carlos, 5 June: 153.0 µg/m³, 3.2× usualSan Carlos, 6 June: 43.9 µg/m³, 0.9× usualSan Carlos, 7 June: 46.1 µg/m³, 1.0× usualLos ÁngelesLos Ángeles, 30 May: 43.3 µg/m³, 1.1× usualLos Ángeles, 31 May: 22.5 µg/m³, 0.6× usualLos Ángeles, 1 June: 36.5 µg/m³, 0.9× usualLos Ángeles, 2 June: 124.4 µg/m³, 3.1× usualLos Ángeles, 3 June: 95.8 µg/m³, 2.4× usualLos Ángeles, 4 June: 104.2 µg/m³, 2.6× usualLos Ángeles, 5 June: 41.1 µg/m³, 1.0× usualLos Ángeles, 6 June: 37.7 µg/m³, 0.9× usualLos Ángeles, 7 June: 58.1 µg/m³, 1.4× usualChillánChillán, 30 May: 32.7 µg/m³, 0.8× usualChillán, 31 May: 29.0 µg/m³, 0.7× usualChillán, 1 June: 42.1 µg/m³, 1.0× usualChillán, 2 June: 95.1 µg/m³, 2.2× usualChillán, 3 June: 97.4 µg/m³, 2.2× usualChillán, 4 June: 108.8 µg/m³, 2.5× usualChillán, 5 June: 106.0 µg/m³, 2.4× usualChillán, 6 June: 63.1 µg/m³, 1.5× usualChillán, 7 June: 47.5 µg/m³, 1.1× usualCuricóCuricó, 30 May: 74.5 µg/m³, 1.3× usualCuricó, 31 May: 40.0 µg/m³, 0.7× usualCuricó, 1 June: 50.4 µg/m³, 0.9× usualCuricó, 2 June: 95.8 µg/m³, 1.7× usualCuricó, 3 June: 113.0 µg/m³, 2.0× usualCuricó, 4 June: 87.1 µg/m³, 1.5× usualCuricó, 5 June: 79.7 µg/m³, 1.4× usualCuricó, 6 June: 56.5 µg/m³, 1.0× usualCuricó, 7 June: 54.8 µg/m³, 1.0× usualCauquenesCauquenes, 30 May: 31.9 µg/m³, 0.8× usualCauquenes, 31 May: 29.4 µg/m³, 0.7× usualCauquenes, 1 June: 55.0 µg/m³, 1.4× usualCauquenes, 2 June: 61.3 µg/m³, 1.5× usualCauquenes, 3 June: 98.9 µg/m³, 2.5× usualCauquenes, 4 June: 114.0 µg/m³, 2.8× usualCauquenes, 5 June: 67.8 µg/m³, 1.7× usualCauquenes, 6 June: 58.3 µg/m³, 1.4× usualCauquenes, 7 June: 56.9 µg/m³, 1.4× usualHualquiHualqui, 30 May: 60.8 µg/m³, 1.4× usualHualqui, 31 May: 65.0 µg/m³, 1.5× usualHualqui, 1 June: 66.4 µg/m³, 1.5× usualHualqui, 2 June: 80.4 µg/m³, 1.8× usualHualqui, 3 June: 97.8 µg/m³, 2.2× usualHualqui, 4 June: 72.5 µg/m³, 1.6× usualHualqui, 5 June: 63.5 µg/m³, 1.4× usualHualqui, 6 June: 53.6 µg/m³, 1.2× usualHualqui, 7 June: 56.3 µg/m³, 1.3× usualTalcaTalca, 30 May: 64.7 µg/m³, 1.5× usualTalca, 31 May: 29.1 µg/m³, 0.7× usualTalca, 1 June: 41.2 µg/m³, 1.0× usualTalca, 2 June: 64.9 µg/m³, 1.5× usualTalca, 3 June: 82.1 µg/m³, 1.9× usualTalca, 4 June: 89.5 µg/m³, 2.1× usualTalca, 5 June: 85.0 µg/m³, 2.0× usualTalca, 6 June: 42.4 µg/m³, 1.0× usualTalca, 7 June: 43.3 µg/m³, 1.0× usual30 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
San CarlosÑuble, Chile2 153.05 June48.53.2×
Los ÁngelesBiobio, Chile3 124.42 June40.63.1×
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 123.030 May53.12.3×
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. 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 10 of 11 episodes in Chile since our records began, by cities reached.

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

Use this page

SmogRank, Southern Chile, June 2025: 9 cities with PM2.5 at twice their usual or more, 2 to 4 June 2025, smogrank.com/episodes/2025-06-southern-chile (accessed 2 October 2026).

Download top 10 (PNG)

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.