SmogRank / Episodes / Taiwan

Taiwan, February 2026

For 2 days, from 13 to 14 February 2026, 13 cities in Taiwan had PM2.5 at least twice their usual for the time of year. The worst reading was Erlun, Taiwan: 43.6 µg/m³ on 14 February, about 2.2× its usual 19.7.

No cause namedWe have no fire or smoke records for these days, so we only say what the measurements show.
Cities reached13in 1 country
Days213 to 14 February 2026
Worst day14 February10 cities counted
Furthest above usual3.2×Taoyuan

Day by day

14 February 10 cities at twice their usual or more
TaichungXizhouPuliNantouChanghuaYuanlinMiaoliLuguZhushanDouliuZhudongHualien CityDaxiChiayi CityYilanTaipeiXizhiSanzhiKeelungYongkangTainanMagongTaitungFengshanKaohsiungChaozhouHengchunJinchengIshigakiMiyakojimaXinyingHsinchuBeigangBuziTaibaoErlunToufenNeiliShulinErlinNew Taipei CityZhubeiTaoyuan
10 Feb11121314151617
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

ErlunErlun, 10 February: 21.2 µg/m³, 1.1× usualErlun, 11 February: 33.2 µg/m³, 1.7× usualErlun, 12 February: 27.3 µg/m³, 1.4× usualErlun, 13 February: 40.7 µg/m³, 2.1× usualErlun, 14 February: 43.6 µg/m³, 2.2× usualErlun, 15 February: 25.0 µg/m³, 1.3× usualErlun, 16 February: 32.4 µg/m³, 1.6× usualErlun, 17 February: 15.6 µg/m³, 0.8× usualXinyingXinying, 10 February: 22.9 µg/m³, 1.2× usualXinying, 11 February: 29.3 µg/m³, 1.5× usualXinying, 12 February: 27.3 µg/m³, 1.4× usualXinying, 13 February: 38.5 µg/m³, 2.0× usualXinying, 14 February: 30.8 µg/m³, 1.6× usualXinying, 15 February: 18.8 µg/m³, 1.0× usualXinying, 16 February: 33.4 µg/m³, 1.7× usualXinying, 17 February: 19.2 µg/m³, 1.0× usualZhubeiZhubei, 10 February: 11.3 µg/m³, 0.9× usualZhubei, 11 February: 18.0 µg/m³, 1.5× usualZhubei, 12 February: 17.7 µg/m³, 1.4× usualZhubei, 13 February: 32.2 µg/m³, 2.6× usualZhubei, 14 February: 26.5 µg/m³, 2.1× usualZhubei, 15 February: 20.3 µg/m³, 1.6× usualZhubei, 16 February: 18.0 µg/m³, 1.5× usualZhubei, 17 February: 6.3 µg/m³, 0.5× usualToufenToufen, 10 February: 13.0 µg/m³, 1.0× usualToufen, 11 February: 15.4 µg/m³, 1.1× usualToufen, 12 February: 19.7 µg/m³, 1.5× usualToufen, 13 February: 29.5 µg/m³, 2.2× usualToufen, 14 February: 22.4 µg/m³, 1.7× usualToufen, 15 February: 19.3 µg/m³, 1.4× usualToufen, 16 February: 23.2 µg/m³, 1.7× usualToufen, 17 February: 7.3 µg/m³, 0.5× usualNeiliNeili, 10 February: 16.9 µg/m³, 1.3× usualNeili, 11 February: 23.3 µg/m³, 1.7× usualNeili, 12 February: 18.5 µg/m³, 1.4× usualNeili, 13 February: 29.3 µg/m³, 2.2× usualNeili, 14 February: 30.8 µg/m³, 2.3× usualNeili, 15 February: 21.7 µg/m³, 1.6× usualNeili, 16 February: 22.8 µg/m³, 1.7× usualNeili, 17 February: 8.4 µg/m³, 0.6× usualHsinchuHsinchu, 10 February: 11.6 µg/m³, 0.8× usualHsinchu, 11 February: 18.0 µg/m³, 1.3× usualHsinchu, 12 February: 18.1 µg/m³, 1.3× usualHsinchu, 13 February: 28.4 µg/m³, 2.1× usualHsinchu, 14 February: 23.8 µg/m³, 1.7× usualHsinchu, 15 February: 17.6 µg/m³, 1.3× usualHsinchu, 16 February: 18.9 µg/m³, 1.4× usualHsinchu, 17 February: 7.3 µg/m³, 0.5× usualTaoyuanTaoyuan, 10 February: 16.2 µg/m³, 1.7× usualTaoyuan, 11 February: 20.3 µg/m³, 2.1× usualTaoyuan, 12 February: 17.3 µg/m³, 1.8× usualTaoyuan, 13 February: 25.8 µg/m³, 2.7× usualTaoyuan, 14 February: 31.5 µg/m³, 3.2× usualTaoyuan, 15 February: 22.1 µg/m³, 2.3× usualTaoyuan, 16 February: 20.9 µg/m³, 2.2× usualTaoyuan, 17 February: 5.4 µg/m³, 0.6× usualErlinErlin, 10 February: 15.5 µg/m³, 0.9× usualErlin, 11 February: 26.9 µg/m³, 1.6× usualErlin, 12 February: 21.5 µg/m³, 1.3× usualErlin, 13 February: 32.1 µg/m³, 1.9× usualErlin, 14 February: 42.5 µg/m³, 2.5× usualErlin, 15 February: 31.8 µg/m³, 1.9× usualErlin, 16 February: 23.8 µg/m³, 1.4× usualErlin, 17 February: 10.4 µg/m³, 0.6× usualBeigangBeigang, 10 February: 19.1 µg/m³, 1.1× usualBeigang, 11 February: 27.8 µg/m³, 1.5× usualBeigang, 12 February: 24.0 µg/m³, 1.3× usualBeigang, 13 February: 34.2 µg/m³, 1.9× usualBeigang, 14 February: 40.3 µg/m³, 2.2× usualBeigang, 15 February: 23.7 µg/m³, 1.3× usualBeigang, 16 February: 34.8 µg/m³, 1.9× usualBeigang, 17 February: 13.9 µg/m³, 0.8× usualTaibaoTaibao, 10 February: 18.3 µg/m³, 1.1× usualTaibao, 11 February: 27.0 µg/m³, 1.6× usualTaibao, 12 February: 23.7 µg/m³, 1.4× usualTaibao, 13 February: 31.9 µg/m³, 1.8× usualTaibao, 14 February: 37.7 µg/m³, 2.2× usualTaibao, 15 February: 26.3 µg/m³, 1.5× usualTaibao, 16 February: 28.8 µg/m³, 1.7× usualTaibao, 17 February: 13.9 µg/m³, 0.8× usualBuziBuzi, 10 February: 16.1 µg/m³, 1.1× usualBuzi, 11 February: 22.1 µg/m³, 1.5× usualBuzi, 12 February: 23.5 µg/m³, 1.6× usualBuzi, 13 February: 29.0 µg/m³, 1.9× usualBuzi, 14 February: 33.2 µg/m³, 2.2× usualBuzi, 15 February: 17.4 µg/m³, 1.2× usualBuzi, 16 February: 28.2 µg/m³, 1.9× usualBuzi, 17 February: 11.5 µg/m³, 0.8× usualShulinShulin, 10 February: 16.8 µg/m³, 1.4× usualShulin, 11 February: 19.6 µg/m³, 1.6× usualShulin, 12 February: 20.3 µg/m³, 1.7× usualShulin, 13 February: 24.4 µg/m³, 2.0× usualShulin, 14 February: 29.4 µg/m³, 2.4× usualShulin, 15 February: 19.9 µg/m³, 1.7× usualShulin, 16 February: 25.8 µg/m³, 2.2× usualShulin, 17 February: 9.0 µg/m³, 0.8× usualNew Taipei CityNew Taipei City, 10 February: 14.4 µg/m³, 1.4× usualNew Taipei City, 11 February: 17.2 µg/m³, 1.6× usualNew Taipei City, 12 February: 17.6 µg/m³, 1.7× usualNew Taipei City, 13 February: 20.0 µg/m³, 1.9× usualNew Taipei City, 14 February: 27.1 µg/m³, 2.6× usualNew Taipei City, 15 February: 18.0 µg/m³, 1.7× usualNew Taipei City, 16 February: 21.8 µg/m³, 2.1× usualNew Taipei City, 17 February: 6.0 µg/m³, 0.6× usual10 Feb11121314151617
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
TaoyuanTaiwan2 31.514 February9.73.2×
ZhubeiTaiwan2 32.213 February12.42.6×
New Taipei CityTaipei, Taiwan1 27.114 February10.52.6×
ErlinTaiwan1 42.514 February16.82.5×
ShulinTaipei, Taiwan1 29.414 February12.02.4×
NeiliTaiwan2 30.814 February13.52.3×
BeigangTaiwan1 40.314 February18.12.2×
ErlunTaiwan2 43.614 February19.72.2×
ToufenTaiwan1 29.513 February13.42.2×
BuziTaiwan1 33.214 February15.12.2×
TaibaoTaiwan1 37.714 February17.42.2×
HsinchuTaiwan1 28.413 February13.82.1×
XinyingTaiwan1 38.513 February19.22.0×

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 Taiwan

Number 6 of 8 episodes in Taiwan since our records began, by cities reached.

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

Use this page

SmogRank, Taiwan, February 2026: 13 cities with PM2.5 at twice their usual or more, 13 to 14 February 2026, smogrank.com/episodes/2026-02-taiwan (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.