Weatheo

Air quality in Chiayi

Air quality index (AQI) and PM2.5 air pollution in Chiayi · 08:00, 6 Nov local time

Over the next 24 hours the index should stay between 99 and 187: cleanest air around Sat 08:00, most polluted around 18:00.

Modelled values: Copernicus CAMS, via OpenWeather · updated 08:00

Hourly air quality forecast in Chiayi

4-day forecast, 96 hours
  1. 8 AM15325°3 km/h
  2. 9 AM15427°4 km/h
  3. 10 AM15628°5 km/h
  4. 11 AM15830°5 km/h
  5. 12 PM16130°4 km/h
  6. 1 PM16531°4 km/h
  7. 2 PM17031°6 km/h
  8. 3 PM17630°8 km/h
  9. 4 PM18229°9 km/h
  10. 5 PM18528°6 km/h
  11. 6 PM18726°5 km/h
  12. 7 PM18525°1 km/h
  13. 8 PM18125°1 km/h
  14. 9 PM17524°1 km/h
  15. 10 PM16924°1 km/h
  16. 11 PM16223°1 km/h
  17. 12 AM15523°1 km/h
  18. 1 AM14322°0 km/h
  19. 2 AM12623°1 km/h
  20. 3 AM11422°2 km/h
  21. 4 AM10822°2 km/h
  22. 5 AM10622°3 km/h
  23. 6 AM10721°5 km/h
  24. 7 AM10523°5 km/h
  25. 8 AM9926°2 km/h
  26. 9 AM9427°4 km/h
  27. 10 AM9229°5 km/h
  28. 11 AM9130°7 km/h
  29. 12 PM9131°7 km/h
  30. 1 PM9231°6 km/h
  31. 2 PM9330°6 km/h
  32. 3 PM9229°9 km/h
  33. 4 PM9028°8 km/h
  34. 5 PM8626°6 km/h
  35. 6 PM8325°5 km/h
  36. 7 PM8024°4 km/h
  37. 8 PM7724°5 km/h
  38. 9 PM7524°4 km/h
  39. 10 PM7323°4 km/h
  40. 11 PM7223°6 km/h
  41. 12 AM7123°7 km/h
  42. 1 AM7123°7 km/h
  43. 2 AM7122°6 km/h
  44. 3 AM7122°6 km/h
  45. 4 AM7221°7 km/h
  46. 5 AM7321°6 km/h
  47. 6 AM7521°5 km/h
  48. 7 AM7622°6 km/h
  49. 8 AM7626°6 km/h
  50. 9 AM7727°3 km/h
  51. 10 AM7928°2 km/h
  52. 11 AM8229°4 km/h
  53. 12 PM8530°7 km/h
  54. 1 PM8930°4 km/h
  55. 2 PM9131°8 km/h
  56. 3 PM9330°9 km/h
  57. 4 PM9629°10 km/h
  58. 5 PM9927°10 km/h
  59. 6 PM10526°8 km/h
  60. 7 PM11025°5 km/h
  61. 8 PM11625°1 km/h
  62. 9 PM12224°1 km/h
  63. 10 PM12923°2 km/h
  64. 11 PM13423°2 km/h
  65. 12 AM13622°2 km/h
  66. 1 AM13821°3 km/h
  67. 2 AM14121°3 km/h
  68. 3 AM14420°3 km/h
  69. 4 AM14420°2 km/h
  70. 5 AM14320°1 km/h
  71. 6 AM14221°2 km/h
  72. 7 AM14222°4 km/h
  73. 8 AM14324°8 km/h
  74. 9 AM14425°7 km/h
  75. 10 AM14826°9 km/h
  76. 11 AM15226°10 km/h
  77. 12 PM15327°15 km/h
  78. 1 PM15227°17 km/h
  79. 2 PM14327°19 km/h
  80. 3 PM12526°19 km/h
  81. 4 PM10425°19 km/h
  82. 5 PM8823°18 km/h
  83. 6 PM7922°16 km/h
  84. 7 PM7521°14 km/h
  85. 8 PM7220°12 km/h
  86. 9 PM6919°11 km/h
  87. 10 PM6719°11 km/h
  88. 11 PM6719°11 km/h
  89. 12 AM6819°11 km/h
  90. 1 AM6919°11 km/h
  91. 2 AM7119°11 km/h
  92. 3 AM7418°10 km/h
  93. 4 AM7518°9 km/h
  94. 5 AM7718°8 km/h
  95. 6 AM8018°7 km/h
  96. 7 AM8218°7 km/h

Daily air quality forecast in Chiayi

DayPeak AQIiconHigh / LowWind
Fri6187avg 17031° / 23°C4 km/h
Sat7155avg 9831° / 21°C4 km/h
Sun8134avg 9031° / 21°C6 km/h
Mon9153avg 12127° / 19°C10 km/h
Tue1082avg 7519° / 18°C9 km/h

Each day shows its worst hour (peak) and its average.

Last update: 08:00
  • PM2.5 Fine particles (≤ 2.5 µm)58.8 µg/m³153
  • PM10 Coarse particles (≤ 10 µm)78.1 µg/m³62
  • NO₂ Nitrogen dioxide17.0 µg/m³8
  • SO₂ Sulphur dioxide23.3 µg/m³11
  • CO Carbon monoxide372.7 µg/m³3
  • O₃ Ozone77.7 µg/m³35

What this means today

Everyone may begin to feel effects. Reduce prolonged exertion outdoors; sensitive groups should stay indoors where possible.

Sensitive groups
Stay indoors as much as possible
Outdoor exercise
Move it indoors
Windows
Keep closed

The index is set by PM2.5 at 58.8 µg/m³ (sub-index 153).

These values come from the Copernicus atmospheric model as distributed by OpenWeather, sampled at the coordinates of Chiayi. They are modelled concentrations on a grid, not readings from a monitoring station inside the town, so neighbouring localities in the same grid cell will show similar figures. Treat them as a regional indication rather than a measurement taken at your street.

Air quality history in Chiayi

140 US AQI · Unhealthy for sensitive groups · November average

71% higher than the 12-month average (82).

Last 30 days
5010015084 (max 93)8 Oct103 (max 148)106 (max 149)112 (max 138)123 (max 140)138 (max 175)13 Oct167 (max 183)165 (max 173)148 (max 177)95 (max 121)91 (max 125)18 Oct121 (max 161)119 (max 153)140 (max 184)77 (max 98)56 (max 60)23 Oct74 (max 101)89 (max 131)135 (max 168)148 (max 164)129 (max 159)28 Oct98 (max 109)119 (max 162)146 (max 167)136 (max 165)132 (max 162)2 Nov150 (max 161)146 (max 159)137 (max 157)137 (max 153)

Hourly model data (Copernicus CAMS via OpenWeather), US AQI computed by Weatheo

Air quality near Chiayi

Modelled (Copernicus CAMS via Open-Meteo), worst first · Updated 08:00

#PlaceUS AQI
1Beigang87
2Chiayi87
3Dalin87
4Minxiong87
5Shuishang87
6Taibao87
7Xingang87
8Zhongbu87
9Zhuqi87

Taiwan: cities ranked by air quality right now

Modelled (Copernicus CAMS via Open-Meteo), worst first · Updated 07:00

#PlaceUS AQI
1Caotun123
2Nantou123
3Taichung123
4Kaohsiung115
5Pingtung115
6Changhua88
7Chiayi88
8Douliu88
9Yuanlin88
10Tainan78
11Keelung75
12Taipei75
13Hsinchu74
14Toufen74
15Zhunan74
16Taoyuan District71
17Zhubei71
18Zhudong71
19Hualien52
20Taitung39

More about Chiayi

Chiayi air quality: your questions

What is the air pollution index in Chiayi?

Right now the air quality index in Chiayi is 153 (Unhealthy). The main pollutant is fine particles (PM2.5) at 59 µg/m³. Over the next 24 hours the index stays between 99 and 187, best around 8:00 AM. Current weather: Chiayi weather today.

Why is the air quality bad in Chiayi today?

The air in Chiayi is unhealthy today (index 153) mainly because of fine particles (PM2.5), at 59 µg/m³. It should improve around 8:00 AM, when the index drops to 99. Current weather: Chiayi weather today.

Weather across Taiwan right now