SmogRank / Episodes / Italy
Italy, France and 2 more countries, June 2025
For 1 day, on 14 June 2025, 25 cities in Italy, France, Switzerland and 1 more countries had PM2.5 at least twice their usual for the time of year. The worst reading was Vigevano, Lombardy, Italy: 41.2 µg/m³ on 14 June, about 3.6× its usual 11.6.
No cause named We have no fire or smoke records for these days, so we only say what the measurements show.
Cities reached 25 in 4 countries
Days 1 14 June 2025
Worst day 14 June 25 cities counted
Furthest above usual 3.9× Bellinzona
Day by day
Play 14 June 25 cities at twice their usual or more
Lindau Innsbruck Kempten (Allgäu) Friedrichshafen Kreuzlingen Konstanz Zürich Winterthur Aosta Biberach an der Riß Starnberg Bern Munich Villingen-Schwenningen Lörrach Basel Saalfelden am Steinernen Meer Gorizia Sallanches Freiburg Müllheim Koper Falconara Marittima Traunreut Albertville Salzburg Burghausen Annemasse Montbéliard Kranj Meylan Klagenfurt am Wörthersee Grenoble Ljubljana Manosque Wels Aix-en-Provence Wolfsberg Villefontaine Bourg-en-Bresse Dole Trbovlje Romans-sur-Isère Novo Mesto Marseille Steyr Valence Celje Marignane Salon-de-Provence Lyon Avignon Amstetten Graz Maribor Arles Saint-Étienne Bihać Ptuj Alessandria Jesi Trento Mulhouse Rovereto Vercelli Nichelino Bolzano Menton Monaco Cannes Bra Capannori Biella Nice Como Turin Borgomanero Novara Pavia Bastia Milan Vigevano Lugano Bellinzona 11 Jun 12 13 14 15 16 17 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
Vigevano Vigevano, 11 June: 24.6 µg/m³ Vigevano, 12 June: no reading Vigevano, 13 June: no reading Vigevano, 14 June: 41.2 µg/m³, 3.6× its usual 11.6 Vigevano, 15 June: no reading Vigevano, 16 June: no reading Vigevano, 17 June: no reading Pavia Pavia, 11 June: 26.3 µg/m³ Pavia, 12 June: no reading Pavia, 13 June: no reading Pavia, 14 June: 37.8 µg/m³, 3.1× its usual 12.1 Pavia, 15 June: no reading Pavia, 16 June: no reading Pavia, 17 June: no reading Novara Novara, 11 June: 25.1 µg/m³ Novara, 12 June: no reading Novara, 13 June: no reading Novara, 14 June: 36.3 µg/m³, 3.1× its usual 11.8 Novara, 15 June: no reading Novara, 16 June: no reading Novara, 17 June: no reading Nichelino Nichelino, 11 June: 26.2 µg/m³ Nichelino, 12 June: no reading Nichelino, 13 June: no reading Nichelino, 14 June: 33.5 µg/m³, 2.7× its usual 12.6 Nichelino, 15 June: no reading Nichelino, 16 June: no reading Nichelino, 17 June: no reading Milan Milan, 11 June: no reading Milan, 12 June: no reading Milan, 13 June: no reading Milan, 14 June: 32.5 µg/m³, 3.3× its usual 10.0 Milan, 15 June: no reading Milan, 16 June: no reading Milan, 17 June: no reading Bra Bra, 11 June: 22.9 µg/m³ Bra, 12 June: no reading Bra, 13 June: no reading Bra, 14 June: 32.4 µg/m³, 2.8× its usual 11.6 Bra, 15 June: no reading Bra, 16 June: no reading Bra, 17 June: no reading Vercelli Vercelli, 11 June: 23.5 µg/m³ Vercelli, 12 June: no reading Vercelli, 13 June: no reading Vercelli, 14 June: 32.0 µg/m³, 2.6× its usual 12.1 Vercelli, 15 June: no reading Vercelli, 16 June: no reading Vercelli, 17 June: no reading Borgomanero Borgomanero, 11 June: 24.3 µg/m³ Borgomanero, 12 June: no reading Borgomanero, 13 June: no reading Borgomanero, 14 June: 31.9 µg/m³, 3.1× its usual 10.3 Borgomanero, 15 June: no reading Borgomanero, 16 June: no reading Borgomanero, 17 June: no reading Turin Turin, 11 June: 23.8 µg/m³ Turin, 12 June: no reading Turin, 13 June: no reading Turin, 14 June: 29.7 µg/m³, 3.1× its usual 9.7 Turin, 15 June: no reading Turin, 16 June: no reading Turin, 17 June: no reading Rovereto Rovereto, 11 June: 26.3 µg/m³ Rovereto, 12 June: 26.7 µg/m³ Rovereto, 13 June: no reading Rovereto, 14 June: 29.6 µg/m³, 2.6× its usual 11.5 Rovereto, 15 June: no reading Rovereto, 16 June: no reading Rovereto, 17 June: no reading Como Como, 11 June: no reading Como, 12 June: no reading Como, 13 June: no reading Como, 14 June: 29.5 µg/m³, 3.0× its usual 9.9 Como, 15 June: no reading Como, 16 June: no reading Como, 17 June: no reading Bellinzona Bellinzona, 11 June: 28.6 µg/m³ Bellinzona, 12 June: 29.6 µg/m³ Bellinzona, 13 June: no reading Bellinzona, 14 June: 29.4 µg/m³, 3.9× its usual 7.6 Bellinzona, 15 June: no reading Bellinzona, 16 June: no reading Bellinzona, 17 June: no reading Nice Nice, 11 June: 26.5 µg/m³ Nice, 12 June: no reading Nice, 13 June: no reading Nice, 14 June: 29.3 µg/m³, 2.9× its usual 10.0 Nice, 15 June: no reading Nice, 16 June: no reading Nice, 17 June: no reading Cannes Cannes, 11 June: 27.9 µg/m³ Cannes, 12 June: no reading Cannes, 13 June: no reading Cannes, 14 June: 29.0 µg/m³, 2.8× its usual 10.2 Cannes, 15 June: no reading Cannes, 16 June: no reading Cannes, 17 June: no reading Trento Trento, 11 June: 26.5 µg/m³ Trento, 12 June: 30.5 µg/m³ Trento, 13 June: no reading Trento, 14 June: 28.8 µg/m³, 2.4× its usual 11.9 Trento, 15 June: no reading Trento, 16 June: no reading Trento, 17 June: no reading Alessandria Alessandria, 11 June: 22.0 µg/m³ Alessandria, 12 June: no reading Alessandria, 13 June: no reading Alessandria, 14 June: 27.5 µg/m³, 2.1× its usual 13.2 Alessandria, 15 June: no reading Alessandria, 16 June: no reading Alessandria, 17 June: no reading Bastia Bastia, 11 June: 25.1 µg/m³ Bastia, 12 June: no reading Bastia, 13 June: no reading Bastia, 14 June: 27.2 µg/m³, 3.2× its usual 8.5 Bastia, 15 June: no reading Bastia, 16 June: no reading Bastia, 17 June: no reading Monaco Monaco, 11 June: 28.0 µg/m³ Monaco, 12 June: no reading Monaco, 13 June: no reading Monaco, 14 June: 27.0 µg/m³, 2.8× its usual 9.5 Monaco, 15 June: no reading Monaco, 16 June: no reading Monaco, 17 June: no reading Menton Menton, 11 June: 28.0 µg/m³ Menton, 12 June: no reading Menton, 13 June: no reading Menton, 14 June: 27.0 µg/m³, 2.8× its usual 9.5 Menton, 15 June: no reading Menton, 16 June: no reading Menton, 17 June: no reading Mulhouse Mulhouse, 11 June: 16.2 µg/m³ Mulhouse, 12 June: no reading Mulhouse, 13 June: no reading Mulhouse, 14 June: 26.9 µg/m³, 2.6× its usual 10.4 Mulhouse, 15 June: no reading Mulhouse, 16 June: no reading Mulhouse, 17 June: no reading Lugano Lugano, 11 June: 23.3 µg/m³ Lugano, 12 June: 26.2 µg/m³ Lugano, 13 June: no reading Lugano, 14 June: 26.1 µg/m³, 3.8× its usual 6.9 Lugano, 15 June: no reading Lugano, 16 June: no reading Lugano, 17 June: no reading Biella Biella, 11 June: 17.5 µg/m³ Biella, 12 June: no reading Biella, 13 June: no reading Biella, 14 June: 26.1 µg/m³, 2.9× its usual 9.1 Biella, 15 June: no reading Biella, 16 June: no reading Biella, 17 June: no reading Bolzano Bolzano, 11 June: 24.4 µg/m³ Bolzano, 12 June: 25.0 µg/m³ Bolzano, 13 June: no reading Bolzano, 14 June: 25.9 µg/m³, 2.8× its usual 9.1 Bolzano, 15 June: no reading Bolzano, 16 June: no reading Bolzano, 17 June: no reading Capannori Capannori, 11 June: no reading Capannori, 12 June: no reading Capannori, 13 June: no reading Capannori, 14 June: 25.3 µg/m³, 2.9× its usual 8.8 Capannori, 15 June: no reading Capannori, 16 June: no reading Capannori, 17 June: no reading Jesi Jesi, 11 June: 25.0 µg/m³ Jesi, 12 June: no reading Jesi, 13 June: no reading Jesi, 14 June: 25.1 µg/m³, 2.2× its usual 11.6 Jesi, 15 June: no reading Jesi, 16 June: no reading Jesi, 17 June: no reading 11 Jun 12 13 14 15 16 17 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
Bellinzona Ticino, Switzerland 1 14 June 7.6 3.9× Lugano Ticino, Switzerland 1 14 June 6.9 3.8× Vigevano Lombardy, Italy 1 14 June 11.6 3.6× Milan Lombardy, Italy 1 14 June 10.0 3.3× Bastia Corsica, France 1 14 June 8.5 3.2× Pavia Lombardy, Italy 1 14 June 12.1 3.1× Novara Piedmont, Italy 1 14 June 11.8 3.1× Borgomanero Piedmont, Italy 1 14 June 10.3 3.1× Turin Piedmont, Italy 1 14 June 9.7 3.1× Como Lombardy, Italy 1 14 June 9.9 3.0× Nice Provence-Alpes-Côte d'Azur, France 1 14 June 10.0 2.9× Biella Piedmont, Italy 1 14 June 9.1 2.9× Capannori Tuscany, Italy 1 14 June 8.8 2.9× Bra Piedmont, Italy 1 14 June 11.6 2.8× Cannes Provence-Alpes-Côte d'Azur, France 1 14 June 10.2 2.8× Monaco Municipality of Monaco, Monaco 1 14 June 9.5 2.8× Menton Provence-Alpes-Côte d'Azur, France 1 14 June 9.5 2.8× Bolzano Trentino-Alto Adige, Italy 1 14 June 9.1 2.8× Nichelino Piedmont, Italy 1 14 June 12.6 2.7× Vercelli Piedmont, Italy 1 14 June 12.1 2.6× Rovereto Trentino-Alto Adige, Italy 1 14 June 11.5 2.6× Mulhouse Grand Est, France 1 14 June 10.4 2.6× Trento Trentino-Alto Adige, Italy 1 14 June 11.9 2.4× Jesi The Marches, Italy 1 14 June 11.6 2.2× Alessandria Piedmont, Italy 1 14 June 13.2 2.1×
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 Italy and France
Number 15 of 30 episodes in Italy and France since our records began, by cities reached.
Europe, 28 February to 4 March 2023 279 Europe, December 2025 to January 2026 169 Europe, March 2023 121 Western Europe, January 2024 117 Western Europe, December 2024 75 Spain, France and Portugal, February 2023 72 France, The Netherlands and United Kingdom, January 2023 66 Europe, June 2025 65 Spain, France and 2 more countries, December 2023 to January 2024 44 France, Belgium and 2 more countries, November and December 2023 43 Southern Europe, February 2024 38 France, Belgium and Germany, April 2023 36 Italy, France and 2 more countries, June 2025 25 Bars: cities reached; colour: the level of the episode's highest daily reading. All 30 .
Use this page SmogRank, Italy, France and 2 more countries, June 2025: 25 cities with PM2.5 at twice their usual or more, 14 June 2025, smogrank.com/episodes/2025-06-italy-france-and-2-more-countries (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.
