SmogRank / Episodes / Italy

Campania and Apulia, Italy, February 2023

For 1 day, on 25 February 2023, 10 cities in Italy had PM2.5 at least twice their usual for the time of year. The worst reading was Marigliano, Campania, Italy: 99.9 µg/m³ on 25 February, about 4.4× its usual 22.5.

No cause namedWe have no fire or smoke records for these days, so we only say what the measurements show.
Cities reached10in 1 country
Days125 February 2023
Worst day25 February10 cities counted
Furthest above usual4.4×Marigliano

Day by day

25 February 10 cities at twice their usual or more
Civitanova MarcheAvellinoNaplesNocera InferioreCava Dè TirreniSalernoFalconara MarittimaBarlettaAndriaPesaroAltamuraModugnoBariCasamassimaMonopoliPaolo VITarantoCeglie MessapicaMostarBrindisiTrebinjeLecceGalatinaLa SpeziaBastiaDurrësJesiAcerraAnconaSan Felice A CancelloCasertaFoggiaSan SeveroBeneventoLuceraMarigliano
22 Feb232425262728
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

MariglianoMarigliano, 22 February: 80.1 µg/m³, 3.6× usualMarigliano, 23 February: 75.7 µg/m³, 3.4× usualMarigliano, 24 February: 72.8 µg/m³, 3.2× usualMarigliano, 25 February: 99.9 µg/m³, 4.4× usualMarigliano, 26 February: 39.3 µg/m³, 1.7× usualMarigliano, 27 February: 31.1 µg/m³, 1.4× usualMarigliano, 28 February: 25.2 µg/m³, 1.1× usualAnconaAncona, 22 February: 38.5 µg/m³, 3.1× usualAncona, 23 February: 27.1 µg/m³, 2.2× usualAncona, 24 February: 41.6 µg/m³, 3.3× usualAncona, 25 February: 28.6 µg/m³, 2.3× usualAncona, 26 February: 14.4 µg/m³, 1.1× usualAncona, 27 February: 4.3 µg/m³, 0.3× usualAncona, 28 February: 8.3 µg/m³, 0.7× usualSan SeveroSan Severo, 22 February: 33.7 µg/m³, 2.8× usualSan Severo, 23 February: no readingSan Severo, 24 February: 40.7 µg/m³, 3.3× usualSan Severo, 25 February: 34.6 µg/m³, 2.8× usualSan Severo, 26 February: 20.9 µg/m³, 1.7× usualSan Severo, 27 February: 6.5 µg/m³, 0.5× usualSan Severo, 28 February: 9.9 µg/m³, 0.8× usualSan Felice A Cancel…San Felice A Cancello, 22 February: 33.1 µg/m³, 2.1× usualSan Felice A Cancello, 23 February: 33.0 µg/m³, 2.1× usualSan Felice A Cancello, 24 February: 41.9 µg/m³, 2.7× usualSan Felice A Cancello, 25 February: 42.4 µg/m³, 2.7× usualSan Felice A Cancello, 26 February: 23.7 µg/m³, 1.5× usualSan Felice A Cancello, 27 February: 10.9 µg/m³, 0.7× usualSan Felice A Cancello, 28 February: 9.6 µg/m³, 0.6× usualLuceraLucera, 22 February: 27.3 µg/m³, 3.0× usualLucera, 23 February: 30.0 µg/m³, 3.3× usualLucera, 24 February: 34.8 µg/m³, 3.9× usualLucera, 25 February: 37.6 µg/m³, 4.2× usualLucera, 26 February: 19.1 µg/m³, 2.1× usualLucera, 27 February: 5.9 µg/m³, 0.7× usualLucera, 28 February: 9.6 µg/m³, 1.1× usualBeneventoBenevento, 22 February: 36.1 µg/m³, 1.9× usualBenevento, 23 February: 46.0 µg/m³, 2.4× usualBenevento, 24 February: 47.2 µg/m³, 2.5× usualBenevento, 25 February: 57.9 µg/m³, 3.0× usualBenevento, 26 February: 20.3 µg/m³, 1.1× usualBenevento, 27 February: 16.4 µg/m³, 0.9× usualBenevento, 28 February: 10.7 µg/m³, 0.6× usualFoggiaFoggia, 22 February: 21.2 µg/m³, 2.4× usualFoggia, 23 February: 26.8 µg/m³, 3.0× usualFoggia, 24 February: 31.1 µg/m³, 3.5× usualFoggia, 25 February: 25.5 µg/m³, 2.8× usualFoggia, 26 February: 18.4 µg/m³, 2.0× usualFoggia, 27 February: 5.9 µg/m³, 0.7× usualFoggia, 28 February: 7.2 µg/m³, 0.8× usualAcerraAcerra, 22 February: 34.6 µg/m³, 2.0× usualAcerra, 23 February: 29.6 µg/m³, 1.7× usualAcerra, 24 February: 34.9 µg/m³, 2.0× usualAcerra, 25 February: 39.6 µg/m³, 2.3× usualAcerra, 26 February: 15.3 µg/m³, 0.9× usualAcerra, 27 February: 11.7 µg/m³, 0.7× usualAcerra, 28 February: 10.9 µg/m³, 0.6× usualCasertaCaserta, 22 February: 18.1 µg/m³, 1.8× usualCaserta, 23 February: 21.9 µg/m³, 2.2× usualCaserta, 24 February: 25.8 µg/m³, 2.6× usualCaserta, 25 February: 27.3 µg/m³, 2.8× usualCaserta, 26 February: 11.9 µg/m³, 1.2× usualCaserta, 27 February: 6.1 µg/m³, 0.6× usualCaserta, 28 February: 5.0 µg/m³, 0.5× usualJesiJesi, 22 February: 36.6 µg/m³, 1.9× usualJesi, 23 February: 30.2 µg/m³, 1.6× usualJesi, 24 February: 25.9 µg/m³, 1.4× usualJesi, 25 February: 38.8 µg/m³, 2.1× usualJesi, 26 February: 13.9 µg/m³, 0.7× usualJesi, 27 February: 5.7 µg/m³, 0.3× usualJesi, 28 February: 14.7 µg/m³, 0.8× usual22 Feb232425262728
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
MariglianoCampania, Italy1 99.925 February22.54.4×
LuceraApulia, Italy1 37.625 February9.04.2×
FoggiaApulia, Italy1 31.124 February9.03.5×
San SeveroApulia, Italy1 40.724 February12.23.3×
AnconaThe Marches, Italy1 41.624 February12.63.3×
BeneventoCampania, Italy1 57.925 February19.03.0×
CasertaCampania, Italy1 27.325 February9.82.8×
San Felice A CancelloCampania, Italy1 42.425 February15.82.7×
AcerraCampania, Italy1 39.625 February17.42.3×
JesiThe Marches, Italy1 38.825 February18.82.1×

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 Italy

The largest of 2 episodes in Italy since our records began, by cities reached.

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

Use this page

SmogRank, Campania and Apulia, Italy, February 2023: 10 cities with PM2.5 at twice their usual or more, 25 February 2023, smogrank.com/episodes/2023-02-campania-and-apulia-italy (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.