SmogRank / Episodes / Taiwan
Taiwan, November 2025
For 1 day, on 28 November 2025, 17 cities in Taiwan had PM2.5 at least twice their usual for the time of year. The worst reading was Magong, Taiwan: 36.0 µg/m³ on 28 November, about 3.2× its usual 11.4.
No cause named We have no fire or smoke records for these days, so we only say what the measurements show.
Cities reached 17 in 1 country
Days 1 28 November 2025
Worst day 28 November 17 cities counted
Furthest above usual 3.6× Yilan
Day by day
Play 28 November 17 cities at twice their usual or more
Xizhou Taichung Yuanlin Nantou Puli Zhudong Zhushan Lugu Erlun Douliu Beigang Chiayi City Taibao Hualien City Xinying Sanzhi Yujing Yongkang Tainan Taitung Fengshan Kaohsiung Chaozhou Hengchun Jincheng Ishigaki Changhua Erlin Buzi Miaoli Toufen Neili Taipei Xizhi Hsinchu Zhubei New Taipei City Shulin Taoyuan Daxi Magong Keelung Yilan 25 Nov 26 27 28 29 30 1 Dec 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
Shulin Shulin, 25 November: 27.7 µg/m³, 2.6× usual Shulin, 26 November: 14.8 µg/m³, 1.4× usual Shulin, 27 November: 14.8 µg/m³, 1.4× usual Shulin, 28 November: 29.7 µg/m³, 2.8× usual Shulin, 29 November: 16.8 µg/m³, 1.6× usual Shulin, 30 November: 16.9 µg/m³, 1.6× usual Shulin, 1 December: 15.2 µg/m³, 1.4× usual Xizhi Xizhi, 25 November: 27.3 µg/m³, 2.4× usual Xizhi, 26 November: 14.1 µg/m³, 1.3× usual Xizhi, 27 November: 14.3 µg/m³, 1.3× usual Xizhi, 28 November: 29.6 µg/m³, 2.6× usual Xizhi, 29 November: 17.9 µg/m³, 1.6× usual Xizhi, 30 November: 15.3 µg/m³, 1.4× usual Xizhi, 1 December: 15.2 µg/m³, 1.4× usual Neili Neili, 25 November: 27.0 µg/m³, 2.3× usual Neili, 26 November: 13.6 µg/m³, 1.2× usual Neili, 27 November: 14.3 µg/m³, 1.2× usual Neili, 28 November: 29.0 µg/m³, 2.5× usual Neili, 29 November: 16.2 µg/m³, 1.4× usual Neili, 30 November: 19.4 µg/m³, 1.6× usual Neili, 1 December: 13.9 µg/m³, 1.2× usual Magong Magong, 25 November: 26.9 µg/m³, 2.4× usual Magong, 26 November: 20.1 µg/m³, 1.8× usual Magong, 27 November: 17.0 µg/m³, 1.5× usual Magong, 28 November: 36.0 µg/m³, 3.2× usual Magong, 29 November: 24.5 µg/m³, 2.1× usual Magong, 30 November: 15.6 µg/m³, 1.4× usual Magong, 1 December: 11.1 µg/m³, 1.0× usual Buzi Buzi, 25 November: 25.7 µg/m³, 2.0× usual Buzi, 26 November: 20.3 µg/m³, 1.6× usual Buzi, 27 November: 12.8 µg/m³, 1.0× usual Buzi, 28 November: 29.3 µg/m³, 2.3× usual Buzi, 29 November: 18.3 µg/m³, 1.4× usual Buzi, 30 November: 18.4 µg/m³, 1.4× usual Buzi, 1 December: 13.7 µg/m³, 1.1× usual Miaoli Miaoli, 25 November: 25.5 µg/m³, 2.2× usual Miaoli, 26 November: 16.0 µg/m³, 1.4× usual Miaoli, 27 November: 12.4 µg/m³, 1.1× usual Miaoli, 28 November: 27.1 µg/m³, 2.4× usual Miaoli, 29 November: 18.5 µg/m³, 1.6× usual Miaoli, 30 November: 17.2 µg/m³, 1.5× usual Miaoli, 1 December: 15.9 µg/m³, 1.4× usual Yilan Yilan, 25 November: 25.4 µg/m³, 3.3× usual Yilan, 26 November: 15.5 µg/m³, 2.0× usual Yilan, 27 November: 9.6 µg/m³, 1.3× usual Yilan, 28 November: 27.3 µg/m³, 3.6× usual Yilan, 29 November: 16.8 µg/m³, 2.2× usual Yilan, 30 November: 11.8 µg/m³, 1.6× usual Yilan, 1 December: 9.8 µg/m³, 1.3× usual New Taipei City New Taipei City, 25 November: 25.4 µg/m³, 2.5× usual New Taipei City, 26 November: 13.1 µg/m³, 1.3× usual New Taipei City, 27 November: 14.0 µg/m³, 1.4× usual New Taipei City, 28 November: 28.7 µg/m³, 2.8× usual New Taipei City, 29 November: 15.7 µg/m³, 1.6× usual New Taipei City, 30 November: 14.5 µg/m³, 1.4× usual New Taipei City, 1 December: 11.9 µg/m³, 1.2× usual Toufen Toufen, 25 November: 25.2 µg/m³, 2.2× usual Toufen, 26 November: 12.8 µg/m³, 1.1× usual Toufen, 27 November: 12.4 µg/m³, 1.1× usual Toufen, 28 November: 27.0 µg/m³, 2.4× usual Toufen, 29 November: 18.6 µg/m³, 1.6× usual Toufen, 30 November: 15.0 µg/m³, 1.3× usual Toufen, 1 December: 13.7 µg/m³, 1.2× usual Daxi Daxi, 25 November: 25.0 µg/m³, 2.5× usual Daxi, 26 November: 12.3 µg/m³, 1.2× usual Daxi, 27 November: 12.7 µg/m³, 1.2× usual Daxi, 28 November: 30.5 µg/m³, 3.0× usual Daxi, 29 November: 16.8 µg/m³, 1.6× usual Daxi, 30 November: 14.3 µg/m³, 1.4× usual Daxi, 1 December: 12.5 µg/m³, 1.2× usual Taipei Taipei, 25 November: 25.0 µg/m³, 2.3× usual Taipei, 26 November: 12.3 µg/m³, 1.1× usual Taipei, 27 November: 13.6 µg/m³, 1.3× usual Taipei, 28 November: 27.3 µg/m³, 2.5× usual Taipei, 29 November: 15.6 µg/m³, 1.4× usual Taipei, 30 November: 14.5 µg/m³, 1.3× usual Taipei, 1 December: 13.2 µg/m³, 1.2× usual Erlin Erlin, 25 November: 26.7 µg/m³, 1.8× usual Erlin, 26 November: 19.5 µg/m³, 1.3× usual Erlin, 27 November: 14.1 µg/m³, 1.0× usual Erlin, 28 November: 30.8 µg/m³, 2.1× usual Erlin, 29 November: 20.9 µg/m³, 1.4× usual Erlin, 30 November: 18.3 µg/m³, 1.3× usual Erlin, 1 December: 16.1 µg/m³, 1.1× usual Taoyuan Taoyuan, 25 November: 24.6 µg/m³, 2.5× usual Taoyuan, 26 November: 11.8 µg/m³, 1.2× usual Taoyuan, 27 November: 13.6 µg/m³, 1.4× usual Taoyuan, 28 November: 29.5 µg/m³, 3.0× usual Taoyuan, 29 November: 16.3 µg/m³, 1.7× usual Taoyuan, 30 November: 17.3 µg/m³, 1.8× usual Taoyuan, 1 December: 16.1 µg/m³, 1.6× usual Changhua Changhua, 25 November: 24.2 µg/m³, 1.8× usual Changhua, 26 November: 18.1 µg/m³, 1.4× usual Changhua, 27 November: 11.5 µg/m³, 0.9× usual Changhua, 28 November: 27.8 µg/m³, 2.1× usual Changhua, 29 November: 19.2 µg/m³, 1.5× usual Changhua, 30 November: 18.5 µg/m³, 1.4× usual Changhua, 1 December: 14.8 µg/m³, 1.1× usual Keelung Keelung, 25 November: 24.9 µg/m³, 3.2× usual Keelung, 26 November: 10.8 µg/m³, 1.4× usual Keelung, 27 November: 13.0 µg/m³, 1.6× usual Keelung, 28 November: 25.7 µg/m³, 3.3× usual Keelung, 29 November: 15.1 µg/m³, 1.9× usual Keelung, 30 November: 10.9 µg/m³, 1.4× usual Keelung, 1 December: 11.4 µg/m³, 1.4× usual Zhubei Zhubei, 25 November: 23.8 µg/m³, 2.5× usual Zhubei, 26 November: 11.6 µg/m³, 1.2× usual Zhubei, 27 November: 11.3 µg/m³, 1.2× usual Zhubei, 28 November: 25.4 µg/m³, 2.7× usual Zhubei, 29 November: 18.1 µg/m³, 1.9× usual Zhubei, 30 November: 15.0 µg/m³, 1.6× usual Zhubei, 1 December: 8.8 µg/m³, 0.9× usual Hsinchu Hsinchu, 25 November: 24.3 µg/m³, 2.5× usual Hsinchu, 26 November: 10.6 µg/m³, 1.1× usual Hsinchu, 27 November: 10.5 µg/m³, 1.1× usual Hsinchu, 28 November: 25.0 µg/m³, 2.6× usual Hsinchu, 29 November: 17.3 µg/m³, 1.8× usual Hsinchu, 30 November: 14.2 µg/m³, 1.4× usual Hsinchu, 1 December: 10.3 µg/m³, 1.1× usual 25 Nov 26 27 28 29 30 1 Dec 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
Yilan Taiwan 1 28 November 7.6 3.6× Keelung Taiwan 1 28 November 7.9 3.3× Magong Taiwan 1 28 November 11.4 3.2× Taoyuan Taiwan 1 28 November 9.8 3.0× Daxi Taiwan 1 28 November 10.2 3.0× New Taipei City Taipei, Taiwan 1 28 November 10.1 2.8× Shulin Taipei, Taiwan 1 28 November 10.5 2.8× Zhubei Taiwan 1 28 November 9.5 2.7× Xizhi Taipei, Taiwan 1 28 November 11.2 2.6× Hsinchu Taiwan 1 28 November 9.8 2.6× Taipei Taiwan 1 28 November 10.8 2.5× Neili Taiwan 1 28 November 11.8 2.5× Toufen Taiwan 1 28 November 11.3 2.4× Miaoli Taiwan 1 28 November 11.5 2.4× Buzi Taiwan 1 28 November 12.8 2.3× Erlin Taiwan 1 28 November 14.5 2.1× Changhua Taiwan 1 28 November 13.1 2.1×
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 Taiwan
Number 4 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, November 2025: 17 cities with PM2.5 at twice their usual or more, 28 November 2025, smogrank.com/episodes/2025-11-taiwan-2 (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.
