{
 "title": "かえでの紅葉日・いちょうの黄葉日（気象庁 生物季節観測）",
 "as_of": "2026-11-12",
 "season": 2026,
 "note": "気象台などが決めた標本木の観測。見頃の予想ではない。2026年はまだ観測が無い地点は「まだ」と表示。平年日は2025年の観測日と平年差（2020年平年値との差）から計算した日付",
 "sources": [
  {
   "name": "気象庁「生物季節観測の情報」",
   "url": "https://www.data.jma.go.jp/sakura/data/index.html"
  },
  {
   "name": "気象庁「かえでの紅葉日」",
   "url": "https://www.data.jma.go.jp/sakura/data/phn_014.html"
  },
  {
   "name": "気象庁「いちょうの黄葉日」",
   "url": "https://www.data.jma.go.jp/sakura/data/phn_012.html"
  },
  {
   "name": "気象庁「地域気象観測所一覧」（観測所の位置）",
   "url": "https://www.jma.go.jp/jma/kishou/know/amedas/ame_master.zip"
  }
 ],
 "license": "気象庁ホームページの利用規約（公共データ利用規約 第1.0版）。気象庁の公表資料をもとに加工して作成",
 "stations": [
  {
   "station": "旭川",
   "lat": 43.7567,
   "lon": 142.3717,
   "addr": "旭川市宮前1条　旭川地方気象台",
   "area": "上川",
   "kaede": {
    "obs_2025": "2025-10-22",
    "diff_normal_2025": -1,
    "diff_lastyear_2025": -3,
    "obs_2026": "2026-10-29",
    "diff_normal_2026": 6,
    "normal_md_derived": "10-23",
    "substitute_species": "やまもみじ"
   }
  },
  {
   "station": "札幌",
   "lat": 43.06,
   "lon": 141.3267,
   "addr": "札幌市中央区北2条西",
   "area": "石狩",
   "kaede": {
    "obs_2025": "2025-11-06",
    "diff_normal_2025": 9,
    "diff_lastyear_2025": -5,
    "obs_2026": "2026-11-09",
    "diff_normal_2026": 12,
    "normal_md_derived": "10-28",
    "substitute_species": "やまもみじ"
   },
   "ichou": {
    "obs_2025": "2025-11-07",
    "diff_normal_2025": 3,
    "diff_lastyear_2025": -5,
    "obs_2026": null,
    "diff_normal_2026": null,
    "normal_md_derived": "11-04",
    "substitute_species": null
   }
  },
  {
   "station": "帯広",
   "lat": 42.9083,
   "lon": 143.2233,
   "addr": "帯広市東9条南",
   "area": "十勝",
   "kaede": {
    "obs_2025": "2025-10-29",
    "diff_normal_2025": 9,
    "diff_lastyear_2025": 0,
    "obs_2026": "2026-10-30",
    "diff_normal_2026": 10,
    "normal_md_derived": "10-20",
    "substitute_species": "おおもみじ"
   },
   "ichou": {
    "obs_2025": "2025-11-04",
    "diff_normal_2025": 7,
    "diff_lastyear_2025": -1,
    "obs_2026": "2026-11-05",
    "diff_normal_2026": 8,
    "normal_md_derived": "10-28",
    "substitute_species": null
   }
  },
  {
   "station": "釧路",
   "lat": 42.985,
   "lon": 144.3767,
   "addr": "釧路市幸町　釧路地方気象台",
   "area": "釧路",
   "kaede": {
    "obs_2025": null,
    "diff_normal_2025": null,
    "diff_lastyear_2025": null,
    "obs_2026": "2026-10-22",
    "diff_normal_2026": 6,
    "normal_md_derived": "10-16",
    "substitute_species": "いたやかえで"
   }
  },
  {
   "station": "室蘭",
   "lat": 42.3117,
   "lon": 140.975,
   "addr": "室蘭市山手町　室蘭地方気象台",
   "area": "胆振",
   "kaede": {
    "obs_2025": "2025-11-14",
    "diff_normal_2025": 7,
    "diff_lastyear_2025": -3,
    "obs_2026": null,
    "diff_normal_2026": null,
    "normal_md_derived": "11-07",
    "substitute_species": "やまもみじ"
   }
  },
  {
   "station": "函館",
   "lat": 41.8167,
   "lon": 140.7533,
   "addr": "函館市美原　函館地方気象台",
   "area": "渡島",
   "kaede": {
    "obs_2025": "2025-11-06",
    "diff_normal_2025": 4,
    "diff_lastyear_2025": -8,
    "obs_2026": "2026-11-06",
    "diff_normal_2026": 4,
    "normal_md_derived": "11-02",
    "substitute_species": "おおもみじ"
   },
   "ichou": {
    "obs_2025": "2025-11-06",
    "diff_normal_2025": 4,
    "diff_lastyear_2025": -9,
    "obs_2026": "2026-11-06",
    "diff_normal_2026": 4,
    "normal_md_derived": "11-02",
    "substitute_species": null
   }
  },
  {
   "station": "青森",
   "lat": 40.8217,
   "lon": 140.7683,
   "addr": "青森市花園　青森地方気象台",
   "area": "青森",
   "kaede": {
    "obs_2025": "2025-11-10",
    "diff_normal_2025": -3,
    "diff_lastyear_2025": -5,
    "obs_2026": "2026-11-06",
    "diff_normal_2026": -7,
    "normal_md_derived": "11-13",
    "substitute_species": null
   },
   "ichou": {
    "obs_2025": "2025-11-05",
    "diff_normal_2025": 3,
    "diff_lastyear_2025": -3,
    "obs_2026": "2026-11-04",
    "diff_normal_2026": 2,
    "normal_md_derived": "11-02",
    "substitute_species": null
   }
  },
  {
   "station": "秋田",
   "lat": 39.7167,
   "lon": 140.0983,
   "addr": "秋田市山王　秋田地方気象台",
   "area": "秋田",
   "kaede": {
    "obs_2025": "2025-11-14",
    "diff_normal_2025": 2,
    "diff_lastyear_2025": -3,
    "obs_2026": null,
    "diff_normal_2026": null,
    "normal_md_derived": "11-12",
    "substitute_species": null
   },
   "ichou": {
    "obs_2025": "2025-11-03",
    "diff_normal_2025": -2,
    "diff_lastyear_2025": -4,
    "obs_2026": "2026-11-04",
    "diff_normal_2026": -1,
    "normal_md_derived": "11-05",
    "substitute_species": null
   }
  },
  {
   "station": "盛岡",
   "lat": 39.6983,
   "lon": 141.165,
   "addr": "盛岡市山王町　盛岡地方気象台",
   "area": "岩手",
   "kaede": {
    "obs_2025": "2025-11-12",
    "diff_normal_2025": -1,
    "diff_lastyear_2025": -15,
    "obs_2026": null,
    "diff_normal_2026": null,
    "normal_md_derived": "11-13",
    "substitute_species": null
   },
   "ichou": {
    "obs_2025": "2025-11-07",
    "diff_normal_2025": 8,
    "diff_lastyear_2025": -1,
    "obs_2026": "2026-11-02",
    "diff_normal_2026": 3,
    "normal_md_derived": "10-30",
    "substitute_species": null
   }
  },
  {
   "station": "山形",
   "lat": 38.255,
   "lon": 140.345,
   "addr": "山形市緑町　山形地方気象台",
   "area": "山形",
   "kaede": {
    "obs_2025": "2025-12-01",
    "diff_normal_2025": 6,
    "diff_lastyear_2025": -3,
    "obs_2026": null,
    "diff_normal_2026": null,
    "normal_md_derived": "11-25",
    "substitute_species": null
   },
   "ichou": {
    "obs_2025": "2025-11-17",
    "diff_normal_2025": 7,
    "diff_lastyear_2025": -1,
    "obs_2026": null,
    "diff_normal_2026": null,
    "normal_md_derived": "11-10",
    "substitute_species": null
   }
  },
  {
   "station": "仙台",
   "lat": 38.2617,
   "lon": 140.8967,
   "addr": "仙台市宮城野区五輪　仙台管区気象台",
   "area": "宮城",
   "kaede": {
    "obs_2025": "2025-11-20",
    "diff_normal_2025": -1,
    "diff_lastyear_2025": -2,
    "obs_2026": null,
    "diff_normal_2026": null,
    "normal_md_derived": "11-21",
    "substitute_species": null
   },
   "ichou": {
    "obs_2025": "2025-11-21",
    "diff_normal_2025": -2,
    "diff_lastyear_2025": -7,
    "obs_2026": null,
    "diff_normal_2026": null,
    "normal_md_derived": "11-23",
    "substitute_species": null
   }
  },
  {
   "station": "福島",
   "lat": 37.7683,
   "lon": 140.435,
   "addr": "福島市八島田字琵琶渕",
   "area": "福島",
   "kaede": {
    "obs_2025": "2025-11-19",
    "diff_normal_2025": 2,
    "diff_lastyear_2025": -3,
    "obs_2026": null,
    "diff_normal_2026": null,
    "normal_md_derived": "11-17",
    "substitute_species": null
   },
   "ichou": {
    "obs_2025": "2025-11-06",
    "diff_normal_2025": 6,
    "diff_lastyear_2025": -1,
    "obs_2026": "2026-11-10",
    "diff_normal_2026": 10,
    "normal_md_derived": "10-31",
    "substitute_species": null
   }
  },
  {
   "station": "新潟",
   "lat": 37.8883,
   "lon": 139.0483,
   "addr": "新潟市中央区女池南",
   "area": "新潟",
   "kaede": {
    "obs_2025": "2025-11-18",
    "diff_normal_2025": 3,
    "diff_lastyear_2025": -8,
    "obs_2026": null,
    "diff_normal_2026": null,
    "normal_md_derived": "11-15",
    "substitute_species": null
   },
   "ichou": {
    "obs_2025": "2025-11-14",
    "diff_normal_2025": 1,
    "diff_lastyear_2025": 0,
    "obs_2026": null,
    "diff_normal_2026": null,
    "normal_md_derived": "11-13",
    "substitute_species": null
   }
  },
  {
   "station": "金沢",
   "lat": 36.5883,
   "lon": 136.6333,
   "addr": "金沢市西念　金沢地方気象台",
   "area": "石川",
   "kaede": {
    "obs_2025": "2025-11-25",
    "diff_normal_2025": 1,
    "diff_lastyear_2025": -8,
    "obs_2026": null,
    "diff_normal_2026": null,
    "normal_md_derived": "11-24",
    "substitute_species": null
   },
   "ichou": {
    "obs_2025": "2025-11-04",
    "diff_normal_2025": -6,
    "diff_lastyear_2025": -6,
    "obs_2026": "2026-10-26",
    "diff_normal_2026": -15,
    "normal_md_derived": "11-10",
    "substitute_species": null
   }
  },
  {
   "station": "富山",
   "lat": 36.7083,
   "lon": 137.2017,
   "addr": "富山市石坂　富山地方気象台",
   "area": "富山",
   "kaede": {
    "obs_2025": "2025-11-25",
    "diff_normal_2025": 1,
    "diff_lastyear_2025": -4,
    "obs_2026": null,
    "diff_normal_2026": null,
    "normal_md_derived": "11-24",
    "substitute_species": null
   },
   "ichou": {
    "obs_2025": "2025-11-21",
    "diff_normal_2025": 2,
    "diff_lastyear_2025": -6,
    "obs_2026": null,
    "diff_normal_2026": null,
    "normal_md_derived": "11-19",
    "substitute_species": null
   }
  },
  {
   "station": "長野",
   "lat": 36.6617,
   "lon": 138.1917,
   "addr": "長野市箱清水　長野地方気象台",
   "area": "長野",
   "kaede": {
    "obs_2025": "2025-11-19",
    "diff_normal_2025": 7,
    "diff_lastyear_2025": -13,
    "obs_2026": null,
    "diff_normal_2026": null,
    "normal_md_derived": "11-12",
    "substitute_species": null
   },
   "ichou": {
    "obs_2025": "2025-11-12",
    "diff_normal_2025": 2,
    "diff_lastyear_2025": -13,
    "obs_2026": null,
    "diff_normal_2026": null,
    "normal_md_derived": "11-10",
    "substitute_species": null
   }
  },
  {
   "station": "宇都宮",
   "lat": 36.5483,
   "lon": 139.8683,
   "addr": "宇都宮市明保野町　宇都宮地方気象台",
   "area": "栃木",
   "kaede": {
    "obs_2025": "2025-11-28",
    "diff_normal_2025": 8,
    "diff_lastyear_2025": -8,
    "obs_2026": null,
    "diff_normal_2026": null,
    "normal_md_derived": "11-20",
    "substitute_species": null
   },
   "ichou": {
    "obs_2025": "2025-11-28",
    "diff_normal_2025": -1,
    "diff_lastyear_2025": -5,
    "obs_2026": null,
    "diff_normal_2026": null,
    "normal_md_derived": "11-29",
    "substitute_species": null
   }
  },
  {
   "station": "福井",
   "lat": 36.055,
   "lon": 136.2217,
   "addr": "福井市豊島　福井地方気象台",
   "area": "福井",
   "kaede": {
    "obs_2025": "2025-12-01",
    "diff_normal_2025": 3,
    "diff_lastyear_2025": -8,
    "obs_2026": null,
    "diff_normal_2026": null,
    "normal_md_derived": "11-28",
    "substitute_species": null
   },
   "ichou": {
    "obs_2025": "2025-11-27",
    "diff_normal_2025": 6,
    "diff_lastyear_2025": -8,
    "obs_2026": null,
    "diff_normal_2026": null,
    "normal_md_derived": "11-21",
    "substitute_species": null
   }
  },
  {
   "station": "前橋",
   "lat": 36.3867,
   "lon": 139.0383,
   "addr": "前橋市元総社町",
   "area": "群馬",
   "kaede": {
    "obs_2025": "2025-12-04",
    "diff_normal_2025": -4,
    "diff_lastyear_2025": -2,
    "obs_2026": null,
    "diff_normal_2026": null,
    "normal_md_derived": "12-08",
    "substitute_species": null
   },
   "ichou": {
    "obs_2025": "2025-11-18",
    "diff_normal_2025": -9,
    "diff_lastyear_2025": -4,
    "obs_2026": null,
    "diff_normal_2026": null,
    "normal_md_derived": "11-27",
    "substitute_species": null
   }
  },
  {
   "station": "熊谷",
   "lat": 36.15,
   "lon": 139.38,
   "addr": "熊谷市桜町　熊谷地方気象台",
   "area": "埼玉",
   "kaede": {
    "obs_2025": "2025-12-08",
    "diff_normal_2025": 7,
    "diff_lastyear_2025": 4,
    "obs_2026": null,
    "diff_normal_2026": null,
    "normal_md_derived": "12-01",
    "substitute_species": null
   },
   "ichou": {
    "obs_2025": "2025-12-16",
    "diff_normal_2025": 18,
    "diff_lastyear_2025": 4,
    "obs_2026": null,
    "diff_normal_2026": null,
    "normal_md_derived": "11-28",
    "substitute_species": null
   }
  },
  {
   "station": "水戸",
   "lat": 36.38,
   "lon": 140.4667,
   "addr": "水戸市金町　水戸地方気象台",
   "area": "茨城",
   "kaede": {
    "obs_2025": "2025-11-27",
    "diff_normal_2025": 7,
    "diff_lastyear_2025": -5,
    "obs_2026": null,
    "diff_normal_2026": null,
    "normal_md_derived": "11-20",
    "substitute_species": null
   },
   "ichou": {
    "obs_2025": "2025-11-28",
    "diff_normal_2025": 7,
    "diff_lastyear_2025": 0,
    "obs_2026": null,
    "diff_normal_2026": null,
    "normal_md_derived": "11-21",
    "substitute_species": null
   }
  },
  {
   "station": "岐阜",
   "lat": 35.4,
   "lon": 136.7617,
   "addr": "岐阜市加納二之丸　岐阜地方気象台",
   "area": "岐阜",
   "kaede": {
    "obs_2025": "2025-11-26",
    "diff_normal_2025": 0,
    "diff_lastyear_2025": -9,
    "obs_2026": null,
    "diff_normal_2026": null,
    "normal_md_derived": "11-26",
    "substitute_species": null
   },
   "ichou": {
    "obs_2025": null,
    "diff_normal_2025": null,
    "diff_lastyear_2025": null,
    "obs_2026": null,
    "diff_normal_2026": null,
    "normal_md_derived": null,
    "substitute_species": null
   }
  },
  {
   "station": "名古屋",
   "lat": 35.1667,
   "lon": 136.965,
   "addr": "名古屋市千種区日和町　名古屋地方気象台",
   "area": "愛知",
   "kaede": {
    "obs_2025": "2025-11-25",
    "diff_normal_2025": -3,
    "diff_lastyear_2025": -10,
    "obs_2026": null,
    "diff_normal_2026": null,
    "normal_md_derived": "11-28",
    "substitute_species": null
   },
   "ichou": {
    "obs_2025": "2025-11-10",
    "diff_normal_2025": -8,
    "diff_lastyear_2025": -6,
    "obs_2026": null,
    "diff_normal_2026": null,
    "normal_md_derived": "11-18",
    "substitute_species": null
   }
  },
  {
   "station": "甲府",
   "lat": 35.6667,
   "lon": 138.5533,
   "addr": "甲府市飯田　甲府地方気象台",
   "area": "山梨",
   "kaede": {
    "obs_2025": "2025-12-05",
    "diff_normal_2025": 6,
    "diff_lastyear_2025": -4,
    "obs_2026": null,
    "diff_normal_2026": null,
    "normal_md_derived": "11-29",
    "substitute_species": null
   },
   "ichou": {
    "obs_2025": "2025-11-25",
    "diff_normal_2025": 8,
    "diff_lastyear_2025": -8,
    "obs_2026": null,
    "diff_normal_2026": null,
    "normal_md_derived": "11-17",
    "substitute_species": null
   }
  },
  {
   "station": "銚子",
   "lat": 35.72,
   "lon": 140.8567,
   "addr": "銚子市小畑新町",
   "area": "千葉",
   "kaede": {
    "obs_2025": "2025-12-15",
    "diff_normal_2025": 3,
    "diff_lastyear_2025": -1,
    "obs_2026": null,
    "diff_normal_2026": null,
    "normal_md_derived": "12-12",
    "substitute_species": null
   },
   "ichou": {
    "obs_2025": "2025-12-11",
    "diff_normal_2025": 11,
    "diff_lastyear_2025": -5,
    "obs_2026": null,
    "diff_normal_2026": null,
    "normal_md_derived": "11-30",
    "substitute_species": null
   }
  },
  {
   "station": "津",
   "lat": 34.7217,
   "lon": 136.525,
   "addr": "津市末広町",
   "area": "三重",
   "kaede": {
    "obs_2025": "2025-11-25",
    "diff_normal_2025": 0,
    "diff_lastyear_2025": -3,
    "obs_2026": null,
    "diff_normal_2026": null,
    "normal_md_derived": "11-25",
    "substitute_species": null
   },
   "ichou": {
    "obs_2025": "2025-11-25",
    "diff_normal_2025": 5,
    "diff_lastyear_2025": -3,
    "obs_2026": null,
    "diff_normal_2026": null,
    "normal_md_derived": "11-20",
    "substitute_species": null
   }
  },
  {
   "station": "静岡",
   "lat": 34.975,
   "lon": 138.4033,
   "addr": "静岡市駿河区曲金　静岡地方気象台",
   "area": "静岡",
   "kaede": {
    "obs_2025": "2025-12-05",
    "diff_normal_2025": 0,
    "diff_lastyear_2025": -7,
    "obs_2026": null,
    "diff_normal_2026": null,
    "normal_md_derived": "12-05",
    "substitute_species": null
   },
   "ichou": {
    "obs_2025": "2025-11-21",
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