SmogRank / Episodes / Chile
South-western Chile, July 2026
For 7 days, from 2 to 8 July 2026, 19 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: 347.0 µg/m³ on 5 July, about 6.0× its usual 58.0.
No cause named We have no fire or smoke records for these days, so we only say what the measurements show.
Cities reached 19 in 1 country
Days 7 2 to 8 July 2026
Worst day 5 July 13 cities counted
Furthest above usual 6.0× Osorno
Day by day
Play 5 July 13 cities at twice their usual or more
Nacimiento Hualqui Lota Chiguayante Concepción Tomé San Pedro de la Paz Cauquenes Curicó Temuco Villarrica Hualpén Coronel Curanilahue Talcahuano San Carlos Chillán Talca Linares Valdivia Puerto Montt La Unión Los Ángeles Puerto Varas Osorno 29 Jun 30 1 Jul 2 3 4 5 6 7 8 9 10 11 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
Valdivia Valdivia, 29 June: 47.9 µg/m³, 1.1× usual Valdivia, 30 June: 96.7 µg/m³, 2.2× usual Valdivia, 1 July: 36.2 µg/m³, 0.8× usual Valdivia, 2 July: 58.4 µg/m³, 1.3× usual Valdivia, 3 July: 157.0 µg/m³, 3.6× usual Valdivia, 4 July: 138.0 µg/m³, 3.2× usual Valdivia, 5 July: 147.0 µg/m³, 3.4× usual Valdivia, 6 July: 52.1 µg/m³, 1.2× usual Valdivia, 7 July: 40.9 µg/m³, 0.9× usual Valdivia, 8 July: 21.8 µg/m³, 0.5× usual Valdivia, 9 July: 32.6 µg/m³, 0.7× usual Valdivia, 10 July: 61.1 µg/m³, 1.4× usual Valdivia, 11 July: 86.1 µg/m³, 2.0× usual Puerto Varas Puerto Varas, 29 June: 40.0 µg/m³, 0.7× usual Puerto Varas, 30 June: 78.8 µg/m³, 1.5× usual Puerto Varas, 1 July: 92.6 µg/m³, 1.7× usual Puerto Varas, 2 July: 143.0 µg/m³, 2.7× usual Puerto Varas, 3 July: 155.0 µg/m³, 2.9× usual Puerto Varas, 4 July: 223.0 µg/m³, 4.1× usual Puerto Varas, 5 July: 315.0 µg/m³, 5.8× usual Puerto Varas, 6 July: 217.0 µg/m³, 4.0× usual Puerto Varas, 7 July: 22.6 µg/m³, 0.4× usual Puerto Varas, 8 July: 19.0 µg/m³, 0.4× usual Puerto Varas, 9 July: 35.4 µg/m³, 0.7× usual Puerto Varas, 10 July: 88.5 µg/m³, 1.6× usual Puerto Varas, 11 July: 167.0 µg/m³, 3.1× usual Linares Linares, 29 June: 40.1 µg/m³, 0.8× usual Linares, 30 June: 74.0 µg/m³, 1.4× usual Linares, 1 July: 58.2 µg/m³, 1.1× usual Linares, 2 July: 116.0 µg/m³, 2.2× usual Linares, 3 July: 170.0 µg/m³, 3.3× usual Linares, 4 July: 120.0 µg/m³, 2.3× usual Linares, 5 July: 128.0 µg/m³, 2.5× usual Linares, 6 July: 127.0 µg/m³, 2.4× usual Linares, 7 July: 162.0 µg/m³, 3.1× usual Linares, 8 July: 143.0 µg/m³, 2.8× usual Linares, 9 July: 57.1 µg/m³, 1.1× usual Linares, 10 July: 38.3 µg/m³, 0.7× usual Linares, 11 July: 39.8 µg/m³, 0.8× usual Chillán Chillán, 29 June: 26.9 µg/m³, 0.7× usual Chillán, 30 June: 29.2 µg/m³, 0.7× usual Chillán, 1 July: 42.6 µg/m³, 1.0× usual Chillán, 2 July: 90.6 µg/m³, 2.2× usual Chillán, 3 July: 125.3 µg/m³, 3.1× usual Chillán, 4 July: 85.5 µg/m³, 2.1× usual Chillán, 5 July: 100.7 µg/m³, 2.5× usual Chillán, 6 July: 128.0 µg/m³, 3.1× usual Chillán, 7 July: 105.8 µg/m³, 2.6× usual Chillán, 8 July: 90.2 µg/m³, 2.2× usual Chillán, 9 July: 34.4 µg/m³, 0.8× usual Chillán, 10 July: 32.2 µg/m³, 0.8× usual Chillán, 11 July: 25.3 µg/m³, 0.6× usual San Carlos San Carlos, 29 June: 29.0 µg/m³, 0.7× usual San Carlos, 30 June: 37.3 µg/m³, 0.9× usual San Carlos, 1 July: 67.2 µg/m³, 1.6× usual San Carlos, 2 July: 90.6 µg/m³, 2.1× usual San Carlos, 3 July: 126.0 µg/m³, 3.0× usual San Carlos, 4 July: 74.2 µg/m³, 1.7× usual San Carlos, 5 July: 103.0 µg/m³, 2.4× usual San Carlos, 6 July: 99.5 µg/m³, 2.3× usual San Carlos, 7 July: 95.4 µg/m³, 2.2× usual San Carlos, 8 July: 92.8 µg/m³, 2.2× usual San Carlos, 9 July: 31.3 µg/m³, 0.7× usual San Carlos, 10 July: 24.8 µg/m³, 0.6× usual San Carlos, 11 July: 27.5 µg/m³, 0.6× usual Talca Talca, 29 June: 31.6 µg/m³, 0.7× usual Talca, 30 June: 48.5 µg/m³, 1.1× usual Talca, 1 July: 41.5 µg/m³, 1.0× usual Talca, 2 July: 86.8 µg/m³, 2.0× usual Talca, 3 July: 75.0 µg/m³, 1.7× usual Talca, 4 July: 75.2 µg/m³, 1.7× usual Talca, 5 July: 99.2 µg/m³, 2.3× usual Talca, 6 July: 83.3 µg/m³, 1.9× usual Talca, 7 July: 117.0 µg/m³, 2.7× usual Talca, 8 July: 133.0 µg/m³, 3.1× usual Talca, 9 July: 53.5 µg/m³, 1.2× usual Talca, 10 July: 36.2 µg/m³, 0.8× usual Talca, 11 July: 31.7 µg/m³, 0.7× usual Los Ángeles Los Ángeles, 29 June: 25.5 µg/m³, 0.6× usual Los Ángeles, 30 June: 27.0 µg/m³, 0.7× usual Los Ángeles, 1 July: 29.8 µg/m³, 0.8× usual Los Ángeles, 2 July: 71.6 µg/m³, 1.8× usual Los Ángeles, 3 July: 165.8 µg/m³, 4.2× usual Los Ángeles, 4 July: 108.7 µg/m³, 2.8× usual Los Ángeles, 5 July: 126.9 µg/m³, 3.2× usual Los Ángeles, 6 July: 194.0 µg/m³, 4.9× usual Los Ángeles, 7 July: 82.1 µg/m³, 2.1× usual Los Ángeles, 8 July: 42.3 µg/m³, 1.1× usual Los Ángeles, 9 July: 30.1 µg/m³, 0.8× usual Los Ángeles, 10 July: 35.7 µg/m³, 0.9× usual Los Ángeles, 11 July: 25.3 µg/m³, 0.6× usual Osorno Osorno, 29 June: 54.6 µg/m³, 0.9× usual Osorno, 30 June: 105.8 µg/m³, 1.8× usual Osorno, 1 July: 36.7 µg/m³, 0.6× usual Osorno, 2 July: 61.5 µg/m³, 1.1× usual Osorno, 3 July: 232.0 µg/m³, 4.0× usual Osorno, 4 July: 275.0 µg/m³, 4.7× usual Osorno, 5 July: 347.0 µg/m³, 6.0× usual Osorno, 6 July: 247.5 µg/m³, 4.3× usual Osorno, 7 July: 71.5 µg/m³, 1.2× usual Osorno, 8 July: 23.6 µg/m³, 0.4× usual Osorno, 9 July: 47.5 µg/m³, 0.8× usual Osorno, 10 July: 98.2 µg/m³, 1.7× usual Osorno, 11 July: 136.5 µg/m³, 2.4× usual Hualpén Hualpén, 29 June: 113.0 µg/m³, 1.8× usual Hualpén, 30 June: 69.3 µg/m³, 1.1× usual Hualpén, 1 July: 116.0 µg/m³, 1.8× usual Hualpén, 2 July: no reading Hualpén, 3 July: 162.0 µg/m³, 2.5× usual Hualpén, 4 July: no reading Hualpén, 5 July: no reading Hualpén, 6 July: no reading Hualpén, 7 July: 139.0 µg/m³, 2.2× usual Hualpén, 8 July: 60.0 µg/m³, 0.9× usual Hualpén, 9 July: 123.0 µg/m³, 1.9× usual Hualpén, 10 July: 68.8 µg/m³, 1.1× usual Hualpén, 11 July: 74.4 µg/m³, 1.2× usual La Unión La Unión, 29 June: 30.0 µg/m³, 0.6× usual La Unión, 30 June: 55.7 µg/m³, 1.2× usual La Unión, 1 July: 42.3 µg/m³, 0.9× usual La Unión, 2 July: 93.5 µg/m³, 2.0× usual La Unión, 3 July: 149.0 µg/m³, 3.2× usual La Unión, 4 July: 138.0 µg/m³, 3.0× usual La Unión, 5 July: 201.0 µg/m³, 4.3× usual La Unión, 6 July: 155.0 µg/m³, 3.3× usual La Unión, 7 July: 41.4 µg/m³, 0.9× usual La Unión, 8 July: 21.1 µg/m³, 0.5× usual La Unión, 9 July: 33.4 µg/m³, 0.7× usual La Unión, 10 July: 60.7 µg/m³, 1.3× usual La Unión, 11 July: 73.1 µg/m³, 1.6× usual Talcahuano Talcahuano, 29 June: 46.0 µg/m³, 1.1× usual Talcahuano, 30 June: 32.1 µg/m³, 0.7× usual Talcahuano, 1 July: 55.3 µg/m³, 1.3× usual Talcahuano, 2 July: 53.3 µg/m³, 1.2× usual Talcahuano, 3 July: 131.0 µg/m³, 3.0× usual Talcahuano, 4 July: 99.4 µg/m³, 2.3× usual Talcahuano, 5 July: 55.7 µg/m³, 1.3× usual Talcahuano, 6 July: 81.0 µg/m³, 1.9× usual Talcahuano, 7 July: 97.6 µg/m³, 2.2× usual Talcahuano, 8 July: 35.1 µg/m³, 0.8× usual Talcahuano, 9 July: 110.0 µg/m³, 2.5× usual Talcahuano, 10 July: 38.5 µg/m³, 0.9× usual Talcahuano, 11 July: 42.2 µg/m³, 1.0× usual Puerto Montt Puerto Montt, 29 June: 32.2 µg/m³, 0.8× usual Puerto Montt, 30 June: 57.1 µg/m³, 1.4× usual Puerto Montt, 1 July: 47.3 µg/m³, 1.2× usual Puerto Montt, 2 July: 72.6 µg/m³, 1.8× usual Puerto Montt, 3 July: 122.7 µg/m³, 3.0× usual Puerto Montt, 4 July: 154.0 µg/m³, 3.8× usual Puerto Montt, 5 July: 89.4 µg/m³, 2.2× usual Puerto Montt, 6 July: 59.6 µg/m³, 1.5× usual Puerto Montt, 7 July: 26.8 µg/m³, 0.7× usual Puerto Montt, 8 July: 24.3 µg/m³, 0.6× usual Puerto Montt, 9 July: 27.7 µg/m³, 0.7× usual Puerto Montt, 10 July: 55.8 µg/m³, 1.4× usual Puerto Montt, 11 July: 95.3 µg/m³, 2.3× usual Curanilahue Curanilahue, 29 June: 55.3 µg/m³, 1.1× usual Curanilahue, 30 June: 33.0 µg/m³, 0.6× usual Curanilahue, 1 July: 53.5 µg/m³, 1.0× usual Curanilahue, 2 July: 95.7 µg/m³, 1.9× usual Curanilahue, 3 July: 97.3 µg/m³, 1.9× usual Curanilahue, 4 July: 133.0 µg/m³, 2.6× usual Curanilahue, 5 July: 155.0 µg/m³, 3.0× usual Curanilahue, 6 July: 137.0 µg/m³, 2.7× usual Curanilahue, 7 July: 86.0 µg/m³, 1.7× usual Curanilahue, 8 July: 36.1 µg/m³, 0.7× usual Curanilahue, 9 July: 69.8 µg/m³, 1.4× usual Curanilahue, 10 July: 56.2 µg/m³, 1.1× usual Curanilahue, 11 July: 85.3 µg/m³, 1.7× usual Villarrica Villarrica, 29 June: 82.5 µg/m³, 1.5× usual Villarrica, 30 June: 40.3 µg/m³, 0.7× usual Villarrica, 1 July: 25.3 µg/m³, 0.4× usual Villarrica, 2 July: no reading Villarrica, 3 July: 42.5 µg/m³, 0.8× usual Villarrica, 4 July: 112.0 µg/m³, 2.0× usual Villarrica, 5 July: 140.0 µg/m³, 2.5× usual Villarrica, 6 July: 133.0 µg/m³, 2.4× usual Villarrica, 7 July: 74.3 µg/m³, 1.3× usual Villarrica, 8 July: 34.2 µg/m³, 0.6× usual Villarrica, 9 July: 42.0 µg/m³, 0.7× usual Villarrica, 10 July: 78.4 µg/m³, 1.4× usual Villarrica, 11 July: 60.5 µg/m³, 1.1× usual Temuco Temuco, 29 June: 73.7 µg/m³, 1.4× usual Temuco, 30 June: 46.3 µg/m³, 0.9× usual Temuco, 1 July: 30.6 µg/m³, 0.6× usual Temuco, 2 July: 88.0 µg/m³, 1.7× usual Temuco, 3 July: 87.5 µg/m³, 1.7× usual Temuco, 4 July: 100.0 µg/m³, 1.9× usual Temuco, 5 July: 123.0 µg/m³, 2.3× usual Temuco, 6 July: 126.0 µg/m³, 2.4× usual Temuco, 7 July: 87.7 µg/m³, 1.7× usual Temuco, 8 July: 30.7 µg/m³, 0.6× usual Temuco, 9 July: 46.6 µg/m³, 0.9× usual Temuco, 10 July: 58.5 µg/m³, 1.1× usual Temuco, 11 July: 96.3 µg/m³, 1.8× usual Coronel Coronel, 29 June: 58.9 µg/m³, 1.3× usual Coronel, 30 June: 37.3 µg/m³, 0.8× usual Coronel, 1 July: 49.2 µg/m³, 1.1× usual Coronel, 2 July: 31.3 µg/m³, 0.7× usual Coronel, 3 July: 48.8 µg/m³, 1.1× usual Coronel, 4 July: 52.4 µg/m³, 1.1× usual Coronel, 5 July: 52.9 µg/m³, 1.2× usual Coronel, 6 July: 124.8 µg/m³, 2.7× usual Coronel, 7 July: 65.8 µg/m³, 1.4× usual Coronel, 8 July: 33.7 µg/m³, 0.7× usual Coronel, 9 July: 49.2 µg/m³, 1.1× usual Coronel, 10 July: 29.0 µg/m³, 0.6× usual Coronel, 11 July: 49.2 µg/m³, 1.1× usual Curicó Curicó, 29 June: 33.6 µg/m³, 0.6× usual Curicó, 30 June: 66.3 µg/m³, 1.2× usual Curicó, 1 July: 42.9 µg/m³, 0.8× usual Curicó, 2 July: 79.1 µg/m³, 1.4× usual Curicó, 3 July: 104.0 µg/m³, 1.9× usual Curicó, 4 July: 112.0 µg/m³, 2.0× usual Curicó, 5 July: 103.0 µg/m³, 1.9× usual Curicó, 6 July: 80.0 µg/m³, 1.5× usual Curicó, 7 July: 111.0 µg/m³, 2.0× usual Curicó, 8 July: 120.0 µg/m³, 2.2× usual Curicó, 9 July: 79.1 µg/m³, 1.4× usual Curicó, 10 July: 54.5 µg/m³, 1.0× usual Curicó, 11 July: 56.6 µg/m³, 1.0× usual Cauquenes Cauquenes, 29 June: 29.8 µg/m³, 0.7× usual Cauquenes, 30 June: 41.3 µg/m³, 1.0× usual Cauquenes, 1 July: 56.9 µg/m³, 1.4× usual Cauquenes, 2 July: 62.3 µg/m³, 1.5× usual Cauquenes, 3 July: 70.9 µg/m³, 1.7× usual Cauquenes, 4 July: 51.8 µg/m³, 1.3× usual Cauquenes, 5 July: 60.4 µg/m³, 1.5× usual Cauquenes, 6 July: 63.9 µg/m³, 1.6× usual Cauquenes, 7 July: 92.0 µg/m³, 2.2× usual Cauquenes, 8 July: 72.6 µg/m³, 1.8× usual Cauquenes, 9 July: 36.9 µg/m³, 0.9× usual Cauquenes, 10 July: 30.8 µg/m³, 0.8× usual Cauquenes, 11 July: 25.6 µg/m³, 0.6× usual San Pedro de la Paz San Pedro de la Paz, 29 June: 39.3 µg/m³, 1.4× usual San Pedro de la Paz, 30 June: 25.2 µg/m³, 0.9× usual San Pedro de la Paz, 1 July: 34.5 µg/m³, 1.2× usual San Pedro de la Paz, 2 July: 34.3 µg/m³, 1.2× usual San Pedro de la Paz, 3 July: 47.4 µg/m³, 1.7× usual San Pedro de la Paz, 4 July: 44.8 µg/m³, 1.6× usual San Pedro de la Paz, 5 July: 37.0 µg/m³, 1.3× usual San Pedro de la Paz, 6 July: 35.5 µg/m³, 1.2× usual San Pedro de la Paz, 7 July: 58.1 µg/m³, 2.0× usual San Pedro de la Paz, 8 July: 27.6 µg/m³, 1.0× usual San Pedro de la Paz, 9 July: 34.1 µg/m³, 1.2× usual San Pedro de la Paz, 10 July: 22.3 µg/m³, 0.8× usual San Pedro de la Paz, 11 July: 29.4 µg/m³, 1.0× usual 29 Jun 1 Jul 3 5 7 9 11 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
Osorno Los Lagos Region, Chile 4 5 July 58.0 6.0× Puerto Varas Los Lagos Region, Chile 4 5 July 53.9 5.8× Los Ángeles Biobio, Chile 6 6 July 39.3 4.9× La Unión Los Ríos Region, Chile 4 5 July 46.5 4.3× Puerto Montt Los Lagos Region, Chile 3 4 July 40.8 3.8× Valdivia Los Ríos Region, Chile 3 3 July 43.7 3.6× Linares Maule Region, Chile 7 3 July 52.0 3.3× Chillán Ñuble, Chile 7 6 July 41.0 3.1× Talca Maule Region, Chile 4 8 July 43.1 3.1× Curanilahue Biobio, Chile 3 5 July 51.3 3.0× Talcahuano Biobio, Chile 3 3 July 43.6 3.0× San Carlos Ñuble, Chile 6 3 July 42.6 3.0× Coronel Biobio, Chile 1 6 July 45.9 2.7× Hualpén Biobio, Chile 2 3 July 64.4 2.5× Villarrica Araucania, Chile 2 5 July 56.4 2.5× Temuco Araucania, Chile 2 6 July 52.7 2.4× Cauquenes Maule Region, Chile 1 7 July 41.0 2.2× Curicó Maule Region, Chile 2 8 July 54.7 2.2× San Pedro de la Paz Biobio, Chile 1 7 July 28.7 2.0×
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
The largest of 11 episodes in Chile since our records began, by cities reached.
South-western Chile, July 2026 19 South-western Chile, May 2026 19 South-western Chile, June and July 2025 17 South-western Chile, August 2026 14 South-western Chile, May 2026 14 South-western Chile, June 2025 12 South-western Chile, August 2026 10 Biobio and Maule Region, Chile, January 2026 10 South-western Chile, August 2025 9 Southern Chile, June 2025 9 Los Lagos Region and Biobio, Chile, May 2026 8 Bars: cities reached; colour: the level of the episode's highest daily reading.
Use this page SmogRank, South-western Chile, July 2026: 19 cities with PM2.5 at twice their usual or more, 2 to 8 July 2026, smogrank.com/episodes/2026-07-south-western-chile (accessed 2 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.
