SmogRank / Episodes / Japan
Japan, March 2025
For 1 day, on 27 March 2025, 92 cities in Japan had PM2.5 at least twice their usual for the time of year. The worst reading was Saijō, Ehime, Japan: 41.6 µg/m³ on 27 March, about 3.0× its usual 13.7.
No cause named We have no fire or smoke records for these days, so we only say what the measurements show.
Cities reached 92 in 1 country
Days 1 27 March 2025
Worst day 27 March 92 cities counted
Furthest above usual 4.5× Fujieda
Day by day
Play 27 March 92 cities at twice their usual or more
Nisshin Seto Inuyama Toyota Okazaki Minamichita Shinshiro Ono Jōyō Iida Sugai Tenri Fukui-shi Kōtari Yawata Obama Kashihara-shi Hōryūji Ikoma Hirakata Takatsuki Kashiwara Kameoka Higashiosaka Yao Ina Nantan Yono Komatsu Habikino Tondabayashichō Osaka Sayama Toyonaka Kawachi-Nagano Matsutō Nonoichi Hashimoto Sakai Amagasaki Takarazuka Kanazawa Tonami Izumi Maizuru Okaya Nishinomiya Oyabe Tsubata Suwa Ayabe Kishiwada Matsumoto Shingū Sandachō Toyama Kinokawa Takaoka Izumisano Miyazu Imizu Kobe Minami-Alps Fukuchiyama Sennan Iwade Namerikawa Himimachi Hakui Uozu Tanba Kyōtango Nishiwaki Kainan Akashi Chikuma Minato Ono Ueda Nanao Nyūzen Higashinozoe Saku Arida Tanabe Kakogawachō-honmachi Nagano Toyooka Gobō Sumoto Izunokuni Anamizu Suzaka Himeji Shimoda Itoigawa Atami Ikaruga Minamiashigara Tatsuno Odawara Tomioka Aioi Narutochō-mitsuishi Hadano Chichibu Kariya Jōetsu Anan Tokushima Nakanojō Ōme Takasaki Hiratsuka Minawa Aihara Kodamachō-kodamaminami Hachiōji Atsugi Yorii Shibukawa Ebina Chigasaki Morohongō Ogawamachi Ayase Honjō Bizen Akishima Tottori-shi Yokota Minamirinkan Yamato Machida Fujisawa Sakai-nakajima Sayama Kamojimachō-jōgejima Numata Sakado Fuchū Higashimurayama Kamakura Kodaira Tokorozawa Higashi-Matsuyama Azamino Yoshinogawa Higashikurume Kumagaya Igusa Kawagoe Noborito Menuma Miura Ōta Kiryū Niiza Gyōda Yokohama Yokosuka Minamiuonuma Kōnosu Asaka Kurihama Mima Ashikaga Hanyū Ageo Tokyo Tatebayashi Saitama Kazo Kawaguchi Kukichūō Sano Tateyama Kasukabe Kimitsu Sōka Koshigaya Koga Minamibōsō Nagaoka Kisarazu Urayasu Misato, Saitama Matsudo Noda Tochigi Zentsujichó Bandō Oyama Sodegaura Ikedachō Kashiwa Kamagaya Kanuma Narashino Jōsō Imaichi Ichihara Shimo-tsuma Chiba Aki Toride Yachiyo Kaminokawa Niimi Chikusei Yotsukaidō Utsunomiya Inzai Mooka Sakura Naka Ajiki Mobara Katsuura Ōami Yonago Tsuchiura Yachimata Nankoku Yaita Narita Tōgane Ōhara Inashiki Ishioka Yasugichō Kochi Kasama Nasukarasuyama Yokoshiba Onomichi Nasushiobara Ino Sawara Sōsa Matsue Mihara Mito Hokota Omigawa Hitachiomiya Kashima-shi Hitachi-Naka Aizu-Wakamatsu Susaki Unnan Shirakawa Takehara Miyoshi Choshi Izumo Shinagawa Hitachi Higashihiroshima Kōriyama Matsuyama Kitaibaraki Yae Ōdachō-ōda Iyo Kure Gion Nakamura Hiroshima Iwaki Gōtsuchō Uwajima Yawatahama Ōtake Iwakuni Hamada Yanai Masuda Hikari Kudamatsu Tsukumiura Saiki Shikokuchūō Owariasahi Kan’onjichō Tamano Tsuyama Iruma Hannō Kurashiki Kurayoshi Sōja Takahashi Asakuchi Fukuyama Kasaoka Kyoto Okayama Yamanashi Kofu Shido Shin’ichi Kizugawa Kamisu Marugame Niihama Uji Hiragi Kaga Saijō Gotemba Numazu Tahara Takamatsu Ōmihachiman Ichinomiya Nabari Ōtsuki Sakaiminato Ise Suzuka Takinomiya Ueno-ebisumachi Youkaichi Yokkaichi Kumano Takashima Imabari Chiryū Kariya Kusatsu Nishio Tsuruga Iga Fujiyoshida Fukuroi Hekinan Hikone Iwata Kitahama Kosai Anjō Nagahama Toba Toyohashi Tōkai Susono Fuji Kameyama Nagoya Ōtsu Sabae Shima Kuwana Kōka Tsu Ama Hamakita Handa Mikuni Tokoname Kaminoma Matsusaka Inabe Gamagōri Owase Hamamatsu Saikū Kakegawa Fujieda Kikugawa Shizuoka Fujinomiya Shimada 24 Mar 25 26 27 28 29 30 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
Tahara Tahara, 24 March: 25.7 µg/m³, 2.4× usual Tahara, 25 March: 22.4 µg/m³, 2.1× usual Tahara, 26 March: 53.9 µg/m³, 4.9× usual Tahara, 27 March: 32.2 µg/m³, 3.0× usual Tahara, 28 March: 10.5 µg/m³, 1.0× usual Tahara, 29 March: 9.7 µg/m³, 0.9× usual Tahara, 30 March: 8.3 µg/m³, 0.8× usual Matsusaka Matsusaka, 24 March: 25.6 µg/m³, 2.6× usual Matsusaka, 25 March: 26.5 µg/m³, 2.7× usual Matsusaka, 26 March: 36.4 µg/m³, 3.7× usual Matsusaka, 27 March: 38.5 µg/m³, 3.9× usual Matsusaka, 28 March: 14.4 µg/m³, 1.5× usual Matsusaka, 29 March: 7.5 µg/m³, 0.8× usual Matsusaka, 30 March: 7.1 µg/m³, 0.7× usual Yokkaichi Yokkaichi, 24 March: 27.0 µg/m³, 2.5× usual Yokkaichi, 25 March: 24.6 µg/m³, 2.2× usual Yokkaichi, 26 March: 36.4 µg/m³, 3.3× usual Yokkaichi, 27 March: 35.1 µg/m³, 3.2× usual Yokkaichi, 28 March: 11.3 µg/m³, 1.0× usual Yokkaichi, 29 March: 9.1 µg/m³, 0.8× usual Yokkaichi, 30 March: 8.1 µg/m³, 0.7× usual Kameyama Kameyama, 24 March: 26.8 µg/m³, 2.7× usual Kameyama, 25 March: 27.0 µg/m³, 2.7× usual Kameyama, 26 March: 36.4 µg/m³, 3.6× usual Kameyama, 27 March: 36.4 µg/m³, 3.6× usual Kameyama, 28 March: 13.4 µg/m³, 1.3× usual Kameyama, 29 March: 9.5 µg/m³, 1.0× usual Kameyama, 30 March: 7.8 µg/m³, 0.8× usual Inabe Inabe, 24 March: 25.5 µg/m³, 2.8× usual Inabe, 25 March: 23.2 µg/m³, 2.6× usual Inabe, 26 March: 34.4 µg/m³, 3.8× usual Inabe, 27 March: 34.8 µg/m³, 3.9× usual Inabe, 28 March: 10.6 µg/m³, 1.2× usual Inabe, 29 March: 7.3 µg/m³, 0.8× usual Inabe, 30 March: 6.1 µg/m³, 0.7× usual Kurashiki Kurashiki, 24 March: 28.4 µg/m³, 2.4× usual Kurashiki, 25 March: 27.3 µg/m³, 2.3× usual Kurashiki, 26 March: 34.3 µg/m³, 2.9× usual Kurashiki, 27 March: 30.4 µg/m³, 2.6× usual Kurashiki, 28 March: 8.4 µg/m³, 0.7× usual Kurashiki, 29 March: 9.4 µg/m³, 0.8× usual Kurashiki, 30 March: 8.6 µg/m³, 0.7× usual Suzuka Suzuka, 24 March: 27.2 µg/m³, 2.6× usual Suzuka, 25 March: 25.8 µg/m³, 2.5× usual Suzuka, 26 March: 34.3 µg/m³, 3.3× usual Suzuka, 27 March: 32.6 µg/m³, 3.2× usual Suzuka, 28 March: 9.7 µg/m³, 0.9× usual Suzuka, 29 March: 8.7 µg/m³, 0.8× usual Suzuka, 30 March: 7.2 µg/m³, 0.7× usual Takamatsu Takamatsu, 24 March: 31.3 µg/m³, 3.1× usual Takamatsu, 25 March: 30.0 µg/m³, 3.0× usual Takamatsu, 26 March: 34.1 µg/m³, 3.4× usual Takamatsu, 27 March: 30.0 µg/m³, 3.0× usual Takamatsu, 28 March: 9.8 µg/m³, 1.0× usual Takamatsu, 29 March: 9.0 µg/m³, 0.9× usual Takamatsu, 30 March: 9.9 µg/m³, 1.0× usual Shido Shido, 24 March: 30.7 µg/m³, 3.0× usual Shido, 25 March: 23.8 µg/m³, 2.3× usual Shido, 26 March: 33.1 µg/m³, 3.2× usual Shido, 27 March: 29.5 µg/m³, 2.8× usual Shido, 28 March: 9.0 µg/m³, 0.9× usual Shido, 29 March: 8.5 µg/m³, 0.8× usual Shido, 30 March: 10.2 µg/m³, 1.0× usual Owariasahi Owariasahi, 24 March: 23.9 µg/m³, 2.2× usual Owariasahi, 25 March: 25.3 µg/m³, 2.3× usual Owariasahi, 26 March: 57.5 µg/m³, 5.2× usual Owariasahi, 27 March: 26.1 µg/m³, 2.4× usual Owariasahi, 28 March: 9.2 µg/m³, 0.8× usual Owariasahi, 29 March: 9.4 µg/m³, 0.9× usual Owariasahi, 30 March: 8.7 µg/m³, 0.8× usual Yamanashi Yamanashi, 24 March: 20.4 µg/m³, 1.9× usual Yamanashi, 25 March: 27.0 µg/m³, 2.5× usual Yamanashi, 26 March: 50.4 µg/m³, 4.7× usual Yamanashi, 27 March: 30.4 µg/m³, 2.8× usual Yamanashi, 28 March: no reading Yamanashi, 29 March: no reading Yamanashi, 30 March: no reading Saijō Saijō, 24 March: 21.5 µg/m³, 1.6× usual Saijō, 25 March: 29.4 µg/m³, 2.1× usual Saijō, 26 March: 29.5 µg/m³, 2.2× usual Saijō, 27 March: 41.6 µg/m³, 3.0× usual Saijō, 28 March: 13.0 µg/m³, 0.9× usual Saijō, 29 March: 8.8 µg/m³, 0.6× usual Saijō, 30 March: 9.8 µg/m³, 0.7× usual Kumano Kumano, 24 March: 22.4 µg/m³, 2.6× usual Kumano, 25 March: 25.2 µg/m³, 2.9× usual Kumano, 26 March: 41.2 µg/m³, 4.8× usual Kumano, 27 March: 28.5 µg/m³, 3.3× usual Kumano, 28 March: 11.5 µg/m³, 1.3× usual Kumano, 29 March: 7.2 µg/m³, 0.8× usual Kumano, 30 March: 10.0 µg/m³, 1.2× usual Imabari Imabari, 24 March: 22.4 µg/m³, 1.9× usual Imabari, 25 March: 26.7 µg/m³, 2.3× usual Imabari, 26 March: 30.0 µg/m³, 2.6× usual Imabari, 27 March: 38.5 µg/m³, 3.3× usual Imabari, 28 March: 11.7 µg/m³, 1.0× usual Imabari, 29 March: 8.6 µg/m³, 0.7× usual Imabari, 30 March: 10.1 µg/m³, 0.9× usual Niihama Niihama, 24 March: 22.0 µg/m³, 1.7× usual Niihama, 25 March: 30.2 µg/m³, 2.3× usual Niihama, 26 March: 28.1 µg/m³, 2.2× usual Niihama, 27 March: 37.1 µg/m³, 2.9× usual Niihama, 28 March: 12.2 µg/m³, 0.9× usual Niihama, 29 March: 7.5 µg/m³, 0.6× usual Niihama, 30 March: 9.2 µg/m³, 0.7× usual Tsu Tsu, 24 March: 24.5 µg/m³, 2.6× usual Tsu, 25 March: 25.0 µg/m³, 2.6× usual Tsu, 26 March: 34.9 µg/m³, 3.6× usual Tsu, 27 March: 35.8 µg/m³, 3.7× usual Tsu, 28 March: 14.1 µg/m³, 1.5× usual Tsu, 29 March: 9.2 µg/m³, 1.0× usual Tsu, 30 March: 7.2 µg/m³, 0.8× usual Kofu Kofu, 24 March: 17.5 µg/m³, 1.9× usual Kofu, 25 March: 25.8 µg/m³, 2.8× usual Kofu, 26 March: 35.7 µg/m³, 3.8× usual Kofu, 27 March: 26.4 µg/m³, 2.8× usual Kofu, 28 March: 9.6 µg/m³, 1.0× usual Kofu, 29 March: 0.9 µg/m³, 0.1× usual Kofu, 30 March: 10.9 µg/m³, 1.2× usual Nabari Nabari, 24 March: 24.5 µg/m³, 2.6× usual Nabari, 25 March: 29.9 µg/m³, 3.1× usual Nabari, 26 March: 35.5 µg/m³, 3.7× usual Nabari, 27 March: 29.7 µg/m³, 3.1× usual Nabari, 28 March: 11.2 µg/m³, 1.2× usual Nabari, 29 March: 9.9 µg/m³, 1.0× usual Nabari, 30 March: 8.6 µg/m³, 0.9× usual Kurayoshi Kurayoshi, 24 March: 19.2 µg/m³, 1.8× usual Kurayoshi, 25 March: 33.4 µg/m³, 3.2× usual Kurayoshi, 26 March: 31.9 µg/m³, 3.1× usual Kurayoshi, 27 March: 26.9 µg/m³, 2.6× usual Kurayoshi, 28 March: 11.6 µg/m³, 1.1× usual Kurayoshi, 29 March: 8.2 µg/m³, 0.8× usual Kurayoshi, 30 March: 6.8 µg/m³, 0.7× usual Mikuni Mikuni, 24 March: 20.9 µg/m³, 2.4× usual Mikuni, 25 March: 25.8 µg/m³, 3.0× usual Mikuni, 26 March: 29.0 µg/m³, 3.3× usual Mikuni, 27 March: 33.1 µg/m³, 3.8× usual Mikuni, 28 March: 12.6 µg/m³, 1.4× usual Mikuni, 29 March: 7.2 µg/m³, 0.8× usual Mikuni, 30 March: 6.1 µg/m³, 0.7× usual Numazu Numazu, 24 March: 20.0 µg/m³, 2.3× usual Numazu, 25 March: 20.3 µg/m³, 2.3× usual Numazu, 26 March: 65.0 µg/m³, 7.4× usual Numazu, 27 March: 26.5 µg/m³, 3.0× usual Numazu, 28 March: 8.8 µg/m³, 1.0× usual Numazu, 29 March: 4.6 µg/m³, 0.5× usual Numazu, 30 March: 9.8 µg/m³, 1.1× usual Fujieda Fujieda, 24 March: 21.5 µg/m³, 3.0× usual Fujieda, 25 March: 20.0 µg/m³, 2.8× usual Fujieda, 26 March: 61.0 µg/m³, 8.6× usual Fujieda, 27 March: 30.7 µg/m³, 4.3× usual Fujieda, 28 March: 7.1 µg/m³, 1.0× usual Fujieda, 29 March: 4.2 µg/m³, 0.6× usual Fujieda, 30 March: 4.0 µg/m³, 0.6× usual Fukuroi Fukuroi, 24 March: 20.8 µg/m³, 2.4× usual Fukuroi, 25 March: 19.5 µg/m³, 2.2× usual Fukuroi, 26 March: 60.9 µg/m³, 7.0× usual Fukuroi, 27 March: 29.3 µg/m³, 3.4× usual Fukuroi, 28 March: no reading Fukuroi, 29 March: no reading Fukuroi, 30 March: no reading Fuji Fuji, 24 March: 21.7 µg/m³, 2.5× usual Fuji, 25 March: 18.8 µg/m³, 2.2× usual Fuji, 26 March: 59.2 µg/m³, 6.8× usual Fuji, 27 March: 31.7 µg/m³, 3.6× usual Fuji, 28 March: 11.0 µg/m³, 1.3× usual Fuji, 29 March: 8.6 µg/m³, 1.0× usual Fuji, 30 March: 8.6 µg/m³, 1.0× usual Kariya Kariya, 24 March: 23.5 µg/m³, 2.5× usual Kariya, 25 March: 24.5 µg/m³, 2.6× usual Kariya, 26 March: 56.0 µg/m³, 6.0× usual Kariya, 27 March: 31.3 µg/m³, 3.3× usual Kariya, 28 March: 8.1 µg/m³, 0.9× usual Kariya, 29 March: 8.1 µg/m³, 0.9× usual Kariya, 30 March: 7.1 µg/m³, 0.8× usual Susono Susono, 24 March: 18.8 µg/m³, 2.4× usual Susono, 25 March: 19.0 µg/m³, 2.4× usual Susono, 26 March: 54.5 µg/m³, 6.9× usual Susono, 27 March: 28.1 µg/m³, 3.6× usual Susono, 28 March: 8.3 µg/m³, 1.1× usual Susono, 29 March: 6.5 µg/m³, 0.8× usual Susono, 30 March: 9.4 µg/m³, 1.2× usual Kosai Kosai, 24 March: 23.4 µg/m³, 2.7× usual Kosai, 25 March: 21.8 µg/m³, 2.5× usual Kosai, 26 March: 53.9 µg/m³, 6.3× usual Kosai, 27 March: 30.2 µg/m³, 3.5× usual Kosai, 28 March: 8.8 µg/m³, 1.0× usual Kosai, 29 March: 7.5 µg/m³, 0.9× usual Kosai, 30 March: 7.3 µg/m³, 0.8× usual Tōkai Tōkai, 24 March: 23.7 µg/m³, 2.7× usual Tōkai, 25 March: 22.9 µg/m³, 2.6× usual Tōkai, 26 March: 53.5 µg/m³, 6.0× usual Tōkai, 27 March: 31.7 µg/m³, 3.6× usual Tōkai, 28 March: 8.0 µg/m³, 0.9× usual Tōkai, 29 March: 6.3 µg/m³, 0.7× usual Tōkai, 30 March: 5.8 µg/m³, 0.7× usual Chiryū Chiryū, 24 March: 19.3 µg/m³, 2.3× usual Chiryū, 25 March: 20.1 µg/m³, 2.4× usual Chiryū, 26 March: 53.4 µg/m³, 6.3× usual Chiryū, 27 March: 27.7 µg/m³, 3.3× usual Chiryū, 28 March: 6.7 µg/m³, 0.8× usual Chiryū, 29 March: 6.7 µg/m³, 0.8× usual Chiryū, 30 March: 5.1 µg/m³, 0.6× usual Shizuoka Shizuoka, 24 March: 20.1 µg/m³, 2.6× usual Shizuoka, 25 March: 22.3 µg/m³, 2.9× usual Shizuoka, 26 March: 52.9 µg/m³, 6.9× usual Shizuoka, 27 March: 33.6 µg/m³, 4.4× usual Shizuoka, 28 March: 9.0 µg/m³, 1.2× usual Shizuoka, 29 March: 7.7 µg/m³, 1.0× usual Shizuoka, 30 March: 6.8 µg/m³, 0.9× usual Hamamatsu Hamamatsu, 24 March: 19.1 µg/m³, 2.5× usual Hamamatsu, 25 March: 19.8 µg/m³, 2.6× usual Hamamatsu, 26 March: 52.0 µg/m³, 6.8× usual Hamamatsu, 27 March: 30.8 µg/m³, 4.0× usual Hamamatsu, 28 March: 8.7 µg/m³, 1.1× usual Hamamatsu, 29 March: 6.6 µg/m³, 0.9× usual Hamamatsu, 30 March: 6.5 µg/m³, 0.8× usual Kakegawa Kakegawa, 24 March: 22.8 µg/m³, 2.9× usual Kakegawa, 25 March: 21.7 µg/m³, 2.7× usual Kakegawa, 26 March: 51.9 µg/m³, 6.6× usual Kakegawa, 27 March: 32.4 µg/m³, 4.1× usual Kakegawa, 28 March: 7.9 µg/m³, 1.0× usual Kakegawa, 29 March: 4.9 µg/m³, 0.6× usual Kakegawa, 30 March: 5.3 µg/m³, 0.7× usual Nagoya Nagoya, 24 March: 23.5 µg/m³, 2.7× usual Nagoya, 25 March: 22.8 µg/m³, 2.6× usual Nagoya, 26 March: 51.4 µg/m³, 5.9× usual Nagoya, 27 March: 30.9 µg/m³, 3.6× usual Nagoya, 28 March: 7.4 µg/m³, 0.9× usual Nagoya, 29 March: 6.6 µg/m³, 0.8× usual Nagoya, 30 March: 5.5 µg/m³, 0.6× usual Toyohashi Toyohashi, 24 March: 18.9 µg/m³, 2.3× usual Toyohashi, 25 March: 19.0 µg/m³, 2.3× usual Toyohashi, 26 March: 50.9 µg/m³, 6.3× usual Toyohashi, 27 March: 28.2 µg/m³, 3.5× usual Toyohashi, 28 March: 8.1 µg/m³, 1.0× usual Toyohashi, 29 March: 6.6 µg/m³, 0.8× usual Toyohashi, 30 March: 6.6 µg/m³, 0.8× usual Nishio Nishio, 24 March: 21.3 µg/m³, 2.3× usual Nishio, 25 March: 21.7 µg/m³, 2.3× usual Nishio, 26 March: 50.8 µg/m³, 5.4× usual Nishio, 27 March: 30.6 µg/m³, 3.3× usual Nishio, 28 March: 7.6 µg/m³, 0.8× usual Nishio, 29 March: 8.0 µg/m³, 0.9× usual Nishio, 30 March: 10.9 µg/m³, 1.2× usual Gamagōri Gamagōri, 24 March: 21.9 µg/m³, 2.8× usual Gamagōri, 25 March: 22.0 µg/m³, 2.8× usual Gamagōri, 26 March: 50.3 µg/m³, 6.4× usual Gamagōri, 27 March: 30.9 µg/m³, 3.9× usual Gamagōri, 28 March: 7.2 µg/m³, 0.9× usual Gamagōri, 29 March: 5.9 µg/m³, 0.7× usual Gamagōri, 30 March: 5.9 µg/m³, 0.7× usual Anjō Anjō, 24 March: 18.5 µg/m³, 2.4× usual Anjō, 25 March: 18.0 µg/m³, 2.3× usual Anjō, 26 March: 48.2 µg/m³, 6.3× usual Anjō, 27 March: 27.0 µg/m³, 3.5× usual Anjō, 28 March: 7.2 µg/m³, 0.9× usual Anjō, 29 March: 6.1 µg/m³, 0.8× usual Anjō, 30 March: 4.6 µg/m³, 0.6× usual Hamakita Hamakita, 24 March: 17.4 µg/m³, 2.5× usual Hamakita, 25 March: 18.1 µg/m³, 2.6× usual Hamakita, 26 March: 48.1 µg/m³, 6.9× usual Hamakita, 27 March: 26.4 µg/m³, 3.8× usual Hamakita, 28 March: 7.7 µg/m³, 1.1× usual Hamakita, 29 March: 5.1 µg/m³, 0.7× usual Hamakita, 30 March: 5.8 µg/m³, 0.8× usual Shimada Shimada, 24 March: 17.0 µg/m³, 2.5× usual Shimada, 25 March: 18.5 µg/m³, 2.7× usual Shimada, 26 March: 46.0 µg/m³, 6.8× usual Shimada, 27 March: 30.9 µg/m³, 4.5× usual Shimada, 28 March: 8.7 µg/m³, 1.3× usual Shimada, 29 March: 6.2 µg/m³, 0.9× usual Shimada, 30 March: 4.2 µg/m³, 0.6× usual Ichinomiya Ichinomiya, 24 March: 22.3 µg/m³, 2.5× usual Ichinomiya, 25 March: 20.7 µg/m³, 2.3× usual Ichinomiya, 26 March: 45.9 µg/m³, 5.1× usual Ichinomiya, 27 March: 27.7 µg/m³, 3.1× usual Ichinomiya, 28 March: 12.8 µg/m³, 1.4× usual Ichinomiya, 29 March: 7.1 µg/m³, 0.8× usual Ichinomiya, 30 March: 5.3 µg/m³, 0.6× usual Kikugawa Kikugawa, 24 March: 19.5 µg/m³, 2.5× usual Kikugawa, 25 March: 17.7 µg/m³, 2.3× usual Kikugawa, 26 March: 45.7 µg/m³, 5.9× usual Kikugawa, 27 March: 33.9 µg/m³, 4.4× usual Kikugawa, 28 March: 8.2 µg/m³, 1.1× usual Kikugawa, 29 March: 5.4 µg/m³, 0.7× usual Kikugawa, 30 March: 5.4 µg/m³, 0.7× usual Ama Ama, 24 March: 20.3 µg/m³, 2.5× usual Ama, 25 March: 20.7 µg/m³, 2.6× usual Ama, 26 March: 44.0 µg/m³, 5.4× usual Ama, 27 March: 31.0 µg/m³, 3.8× usual Ama, 28 March: 11.6 µg/m³, 1.4× usual Ama, 29 March: 6.1 µg/m³, 0.8× usual Ama, 30 March: 4.6 µg/m³, 0.6× usual Handa Handa, 24 March: 22.4 µg/m³, 2.5× usual Handa, 25 March: 21.5 µg/m³, 2.4× usual Handa, 26 March: 42.8 µg/m³, 4.8× usual Handa, 27 March: 33.6 µg/m³, 3.8× usual Handa, 28 March: 7.5 µg/m³, 0.8× usual Handa, 29 March: 6.2 µg/m³, 0.7× usual Handa, 30 March: 6.1 µg/m³, 0.7× usual Owase Owase, 24 March: 22.7 µg/m³, 2.8× usual Owase, 25 March: 24.8 µg/m³, 3.1× usual Owase, 26 March: 40.1 µg/m³, 5.0× usual Owase, 27 March: 31.4 µg/m³, 3.9× usual Owase, 28 March: 8.1 µg/m³, 1.0× usual Owase, 29 March: 8.1 µg/m³, 1.0× usual Owase, 30 March: 9.8 µg/m³, 1.2× usual Hekinan Hekinan, 24 March: 17.4 µg/m³, 2.1× usual Hekinan, 25 March: 16.0 µg/m³, 2.0× usual Hekinan, 26 March: 39.6 µg/m³, 4.8× usual Hekinan, 27 March: 27.6 µg/m³, 3.4× usual Hekinan, 28 March: 6.1 µg/m³, 0.7× usual Hekinan, 29 March: 4.7 µg/m³, 0.6× usual Hekinan, 30 March: 5.4 µg/m³, 0.7× usual Tokoname Tokoname, 24 March: 22.1 µg/m³, 2.6× usual Tokoname, 25 March: 19.7 µg/m³, 2.3× usual Tokoname, 26 March: 38.2 µg/m³, 4.4× usual Tokoname, 27 March: 32.5 µg/m³, 3.8× usual Tokoname, 28 March: 6.8 µg/m³, 0.8× usual Tokoname, 29 March: 6.4 µg/m³, 0.7× usual Tokoname, 30 March: 4.7 µg/m³, 0.5× usual Ōtsuki Ōtsuki, 24 March: 19.5 µg/m³, 2.3× usual Ōtsuki, 25 March: 21.5 µg/m³, 2.5× usual Ōtsuki, 26 March: 36.9 µg/m³, 4.3× usual Ōtsuki, 27 March: 26.2 µg/m³, 3.1× usual Ōtsuki, 28 March: 11.0 µg/m³, 1.3× usual Ōtsuki, 29 March: 5.1 µg/m³, 0.6× usual Ōtsuki, 30 March: 7.9 µg/m³, 0.9× usual Fujiyoshida Fujiyoshida, 24 March: 18.7 µg/m³, 2.4× usual Fujiyoshida, 25 March: 22.8 µg/m³, 3.0× usual Fujiyoshida, 26 March: 35.6 µg/m³, 4.6× usual Fujiyoshida, 27 March: 26.4 µg/m³, 3.4× usual Fujiyoshida, 28 March: 5.0 µg/m³, 0.6× usual Fujiyoshida, 29 March: 3.4 µg/m³, 0.4× usual Fujiyoshida, 30 March: 9.2 µg/m³, 1.2× usual Fukuyama Fukuyama, 24 March: 20.4 µg/m³, 1.5× usual Fukuyama, 25 March: 22.0 µg/m³, 1.7× usual Fukuyama, 26 March: 29.9 µg/m³, 2.2× usual Fukuyama, 27 March: 35.5 µg/m³, 2.7× usual Fukuyama, 28 March: 10.4 µg/m³, 0.8× usual Fukuyama, 29 March: 10.5 µg/m³, 0.8× usual Fukuyama, 30 March: 10.0 µg/m³, 0.8× usual Kuwana Kuwana, 24 March: 22.5 µg/m³, 2.6× usual Kuwana, 25 March: 21.5 µg/m³, 2.5× usual Kuwana, 26 March: 35.4 µg/m³, 4.1× usual Kuwana, 27 March: 31.8 µg/m³, 3.7× usual Kuwana, 28 March: 9.0 µg/m³, 1.0× usual Kuwana, 29 March: 7.3 µg/m³, 0.8× usual Kuwana, 30 March: 5.6 µg/m³, 0.6× usual Ise Ise, 24 March: 23.8 µg/m³, 2.6× usual Ise, 25 March: 23.5 µg/m³, 2.6× usual Ise, 26 March: 35.2 µg/m³, 3.8× usual Ise, 27 March: 29.8 µg/m³, 3.2× usual Ise, 28 March: 9.2 µg/m³, 1.0× usual Ise, 29 March: 8.1 µg/m³, 0.9× usual Ise, 30 March: 6.2 µg/m³, 0.7× usual Saikū Saikū, 24 March: 22.3 µg/m³, 2.5× usual Saikū, 25 March: 24.5 µg/m³, 2.8× usual Saikū, 26 March: 34.0 µg/m³, 3.8× usual Saikū, 27 March: 35.2 µg/m³, 4.0× usual Saikū, 28 March: 10.7 µg/m³, 1.2× usual Saikū, 29 March: 6.9 µg/m³, 0.8× usual Saikū, 30 March: 6.6 µg/m³, 0.7× usual Iruma Iruma, 24 March: 18.7 µg/m³, 1.8× usual Iruma, 25 March: 23.0 µg/m³, 2.2× usual Iruma, 26 March: 34.6 µg/m³, 3.4× usual Iruma, 27 March: 26.9 µg/m³, 2.6× usual Iruma, 28 March: 17.8 µg/m³, 1.7× usual Iruma, 29 March: 5.0 µg/m³, 0.5× usual Iruma, 30 March: 6.9 µg/m³, 0.7× usual Kaminoma Kaminoma, 24 March: 23.3 µg/m³, 2.9× usual Kaminoma, 25 March: 23.8 µg/m³, 3.0× usual Kaminoma, 26 March: 34.4 µg/m³, 4.3× usual Kaminoma, 27 March: 31.1 µg/m³, 3.9× usual Kaminoma, 28 March: 7.1 µg/m³, 0.9× usual Kaminoma, 29 March: 6.6 µg/m³, 0.8× usual Kaminoma, 30 March: 5.3 µg/m³, 0.7× usual Toba Toba, 24 March: 22.5 µg/m³, 2.7× usual Toba, 25 March: 21.6 µg/m³, 2.6× usual Toba, 26 March: 34.3 µg/m³, 4.1× usual Toba, 27 March: 29.3 µg/m³, 3.5× usual Toba, 28 March: 5.8 µg/m³, 0.7× usual Toba, 29 March: 7.2 µg/m³, 0.9× usual Toba, 30 March: 5.7 µg/m³, 0.7× usual Hannō Hannō, 24 March: 18.7 µg/m³, 1.9× usual Hannō, 25 March: 23.4 µg/m³, 2.3× usual Hannō, 26 March: 34.1 µg/m³, 3.4× usual Hannō, 27 March: 25.6 µg/m³, 2.6× usual Hannō, 28 March: 20.0 µg/m³, 2.0× usual Hannō, 29 March: 5.1 µg/m³, 0.5× usual Hannō, 30 March: 6.9 µg/m³, 0.7× usual Shin’ichi Shin’ichi, 24 March: 19.6 µg/m³, 1.7× usual Shin’ichi, 25 March: 22.4 µg/m³, 1.9× usual Shin’ichi, 26 March: 29.9 µg/m³, 2.5× usual Shin’ichi, 27 March: 33.5 µg/m³, 2.8× usual Shin’ichi, 28 March: 10.3 µg/m³, 0.9× usual Shin’ichi, 29 March: 10.8 µg/m³, 0.9× usual Shin’ichi, 30 March: 10.5 µg/m³, 0.9× usual Ueno-ebisumachi Ueno-ebisumachi, 24 March: 24.0 µg/m³, 2.7× usual Ueno-ebisumachi, 25 March: 24.9 µg/m³, 2.8× usual Ueno-ebisumachi, 26 March: 33.3 µg/m³, 3.7× usual Ueno-ebisumachi, 27 March: 28.1 µg/m³, 3.2× usual Ueno-ebisumachi, 28 March: 9.1 µg/m³, 1.0× usual Ueno-ebisumachi, 29 March: 7.8 µg/m³, 0.9× usual Ueno-ebisumachi, 30 March: 5.4 µg/m³, 0.6× usual Asakuchi Asakuchi, 24 March: 10.2 µg/m³, 0.9× usual Asakuchi, 25 March: 17.7 µg/m³, 1.5× usual Asakuchi, 26 March: 32.4 µg/m³, 2.7× usual Asakuchi, 27 March: 31.9 µg/m³, 2.7× usual Asakuchi, 28 March: 8.0 µg/m³, 0.7× usual Asakuchi, 29 March: 9.4 µg/m³, 0.8× usual Asakuchi, 30 March: 9.1 µg/m³, 0.8× usual Fujinomiya Fujinomiya, 24 March: 21.0 µg/m³, 2.7× usual Fujinomiya, 25 March: 17.6 µg/m³, 2.3× usual Fujinomiya, 26 March: no reading Fujinomiya, 27 March: 34.5 µg/m³, 4.5× usual Fujinomiya, 28 March: 5.6 µg/m³, 0.7× usual Fujinomiya, 29 March: 6.3 µg/m³, 0.8× usual Fujinomiya, 30 March: 8.7 µg/m³, 1.1× usual 24 Mar 25 26 27 28 29 30 The 60 cities with the highest readings of 92, 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
Fujieda Shizuoka, Japan 1 26 March 7.1 8.6× Numazu Shizuoka, Japan 1 26 March 8.8 7.4× Fukuroi Shizuoka, Japan 1 26 March 8.7 7.0× Susono Shizuoka, Japan 1 26 March 7.9 6.9× Hamakita Shizuoka, Japan 1 26 March 7.0 6.9× Shizuoka Shizuoka, Japan 1 26 March 7.7 6.9× Fuji Shizuoka, Japan 1 26 March 8.7 6.8× Shimada Shizuoka, Japan 1 26 March 6.8 6.8× Hamamatsu Shizuoka, Japan 1 26 March 7.7 6.8× Kakegawa Shizuoka, Japan 1 26 March 7.9 6.6× Gamagōri Aichi, Japan 1 26 March 7.9 6.4× Toyohashi Aichi, Japan 1 26 March 8.1 6.3× Chiryū Aichi, Japan 1 26 March 8.5 6.3× Kosai Shizuoka, Japan 1 26 March 8.6 6.3× Anjō Aichi, Japan 1 26 March 7.7 6.3× Tōkai Aichi, Japan 1 26 March 8.9 6.0× Kariya Aichi, Japan 1 26 March 9.4 6.0× Kikugawa Shizuoka, Japan 1 26 March 7.7 5.9× Nagoya Aichi, Japan 1 26 March 8.7 5.9× Ama Aichi, Japan 1 26 March 8.1 5.4× Nishio Aichi, Japan 1 26 March 9.4 5.4× Owariasahi Aichi, Japan 1 26 March 11.0 5.2× Ichinomiya Aichi, Japan 1 26 March 9.0 5.1× Owase Mie, Japan 1 26 March 8.1 5.0× Tahara Aichi, Japan 1 26 March 10.9 4.9× Hekinan Aichi, Japan 1 26 March 8.2 4.8× Handa Aichi, Japan 1 26 March 8.9 4.8× Kumano Mie, Japan 1 26 March 8.6 4.8× Yamanashi Yamanashi, Japan 1 26 March 10.7 4.7× Fujiyoshida Yamanashi, Japan 1 26 March 7.7 4.6× Fujinomiya Shizuoka, Japan 1 27 March 7.7 4.5× Tokoname Aichi, Japan 1 26 March 8.6 4.4× Ōtsuki Yamanashi, Japan 1 26 March 8.5 4.3× Kaminoma Aichi, Japan 1 26 March 8.0 4.3× Toba Mie, Japan 1 26 March 8.3 4.1× Kuwana Mie, Japan 1 26 March 8.7 4.1× Shima Mie, Japan 1 26 March 7.9 4.0× Saikū Mie, Japan 1 27 March 8.9 4.0× Matsusaka Mie, Japan 1 27 March 9.8 3.9× Inabe Mie, Japan 1 27 March 9.0 3.9× Kofu Yamanashi, Japan 1 26 March 9.3 3.8× Ise Mie, Japan 1 26 March 9.2 3.8× Mikuni Fukui, Japan 1 27 March 8.7 3.8× Ueno-ebisumachi Mie, Japan 1 26 March 8.9 3.7× Tsu Mie, Japan 1 27 March 9.6 3.7× Kōka Shiga, Japan 1 27 March 7.3 3.7× Nabari Mie, Japan 1 26 March 9.6 3.7× Kameyama Mie, Japan 1 26 March 10.0 3.6× Ōtsu Shiga, Japan 1 27 March 8.0 3.6× Sabae Fukui, Japan 1 27 March 8.2 3.6× Kizugawa Kyoto, Japan 1 26 March 8.8 3.5× Uji Kyoto, Japan 1 26 March 9.0 3.5× Hikone Shiga, Japan 1 26 March 9.1 3.5× Nagahama Shiga, Japan 1 27 March 9.0 3.5× Iga Mie, Japan 1 27 March 9.2 3.4× Kitahama Shiga, Japan 1 27 March 8.0 3.4× Takamatsu Kagawa, Japan 1 26 March 10.0 3.4× Hannō Saitama, Japan 1 26 March 10.0 3.4× Iwata Shizuoka, Japan 1 27 March 8.1 3.4× Iruma Saitama, Japan 1 26 March 10.3 3.4× Tsuruga Fukui, Japan 1 27 March 8.3 3.3× Suzuka Mie, Japan 1 26 March 10.3 3.3× Imabari Ehime, Japan 1 27 March 11.6 3.3× Yokkaichi Mie, Japan 1 26 March 11.0 3.3× Takashima Shiga, Japan 1 27 March 9.7 3.3× Kusatsu Shiga, Japan 1 27 March 9.4 3.3× Okayama Okayama, Japan 1 26 March 9.4 3.3× Youkaichi Shiga, Japan 1 26 March 9.3 3.2× Kurayoshi Tottori, Japan 1 25 March 10.4 3.2× Shido Kagawa, Japan 1 26 March 10.4 3.2× Takinomiya Kagawa, Japan 1 27 March 7.9 3.2× Ōmihachiman Shiga, Japan 1 27 March 8.5 3.1× Sakaiminato Tottori, Japan 1 25 March 8.6 3.1× Kamisu Ibaraki, Japan 1 26 March 8.8 3.1× Kyoto Kyoto, Japan 1 26 March 9.9 3.1× Kaga Ishikawa, Japan 1 26 March 8.6 3.1× Saijō Ehime, Japan 1 27 March 13.7 3.0× Gotemba Shizuoka, Japan 1 27 March 8.7 3.0× Hiragi Kagawa, Japan 1 27 March 9.3 3.0× Tsuyama Okayama, Japan 1 26 March 10.5 2.9× Kurashiki Okayama, Japan 1 26 March 11.8 2.9× Marugame Kagawa, Japan 1 27 March 10.7 2.9× Niihama Ehime, Japan 1 27 March 12.9 2.9× Shin’ichi Hiroshima, Japan 1 27 March 11.8 2.8× Sōja Okayama, Japan 1 26 March 11.0 2.8× Kasaoka Okayama, Japan 1 27 March 11.8 2.7× Asakuchi Okayama, Japan 1 26 March 12.0 2.7× Fukuyama Hiroshima, Japan 1 27 March 13.3 2.7× Tamano Okayama, Japan 1 26 March 11.8 2.7× Takahashi Okayama, Japan 1 27 March 10.5 2.6× Kan’onjichō Kagawa, Japan 1 27 March 11.6 2.4× Shikokuchūō Ehime, Japan 1 26 March 13.2 2.4×
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 Japan
Number 11 of 27 episodes in Japan since our records began, by cities reached.
Japan, June and July 2025 508 Japan and South Korea, March 2025 454 Japan and South Korea, March 2026 305 Japan and South Korea, January 2025 274 Japan and South Korea, February and March 2025 192 Japan, July 2026 172 Japan, November 2023 131 Japan, August 2025 126 Japan, January and February 2025 110 Japan, May 2025 103 Japan, March 2025 92 Japan and South Korea, April 2025 86 Bars: cities reached; colour: the level of the episode's highest daily reading. All 27 .
Use this page SmogRank, Japan, March 2025: 92 cities with PM2.5 at twice their usual or more, 27 March 2025, smogrank.com/episodes/2025-03-japan (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.
