SmogRank / History / May 2, 2024

Most polluted cities on May 2, 2024

2,330 cities ranked by their average PM2.5 over the day; the worst was Puerto Varas, Chile, at 152.0 µg/m³. Each city's own local calendar day.

Bad-air episodes during May 2, 2024. All episodes.

← Puerto Varas 152.0 µg/m³ 100 µg/m³15 WHO 24-hour guideline
Every city ranked for May 2, 2024, one column each, worst on the left and cleanest on the right; height is PM2.5 in µg/m³. Point at it to read a city; tap to open it.
  1. 1Puerto VarasLos Lagos Region, Chile
    22710.1×
  2. 2San CarlosÑuble, Chile
    2058.7×
  3. 3Chiang RaiChiang Rai, Thailand
    2038.5×
  4. 4Mae SaiChiang Rai, Thailand
    1978.1×
  5. 5OsornoLos Lagos Region, Chile
    1967.9×
  6. 6Ubon RatchathaniUbon Ratchathani, Thailand
    1897.3×
  7. 7PhayaoPhayao, Thailand
    1867.0×
  8. 8Lahorelow-cost sensorsPunjab, Pakistan
    1846.9×
  9. 8UttaraditUttaradit, Thailand
    1846.9×
  10. 10CoyhaiqueAysén, Chile
    1816.6×
  11. 11LampangLampang, Thailand
    1796.4×
  12. 12N'DjamenaN’Djaména, Chad
    1766.1×
  13. 13HualpénBiobio, Chile
    1745.9×
  14. 14NanNan, Thailand
    1745.8×
  15. 15Kathmandulow-cost sensorsBagmati Province, Nepal
    1715.6×
  16. 16Chiang MaiChiang Mai, Thailand
    1695.4×
  17. 17PhraePhrae, Thailand
    1695.4×
  18. 18Santa Anita - Los FicusLima region, Peru
    1634.8×
  19. 19Peshawarlow-cost sensorsKhyber Pakhtunkhwa, Pakistan
    1624.7×
  20. 20SukhothaiSukhothai, Thailand
    1614.7×
  21. 20DelhiDelhi, India
    1614.7×
  22. 22NacimientoBiobio, Chile
    1614.6×
  23. 23Los ÁngelesBiobio, Chile
    1604.6×
  24. 24LamphunLamphun, Thailand
    1604.6×
  25. 25ChillánÑuble, Chile
    1604.5×
  26. 26MukdahanMukdahan, Thailand
    1594.5×
  27. 27KalasinKalasin, Thailand
    1574.3×
  28. 28Dhakalow-cost sensorsDhaka Division, Bangladesh
    1564.2×
  29. 29CuranilahueBiobio, Chile
    1554.1×
  30. 30LoeiLoei, Thailand
    1554.0×
  31. 31Kamphaeng PhetKamphaeng Phet, Thailand
    1544.0×
  32. 32La UniónLos Ríos Region, Chile
    1544.0×
  33. 33Amnat CharoenAmnat Charoen, Thailand
    1543.9×
  34. 34San Salvador TizatlalliMéxico, Mexico
    1523.8×
  35. 35Udon ThaniUdon Thani, Thailand
    1513.7×
  36. 36TalcahuanoBiobio, Chile
    1513.7×
  37. 37Nong Bua LamphuNong Bua Lamphu, Thailand
    1513.7×
  38. 38PhetchabunPhetchabun, Thailand
    1483.6×
  39. 38Puerto MonttLos Lagos Region, Chile
    1483.6×
  40. 40PhichitPhichit, Thailand
    1483.6×
  41. 41HyderabadTelangana, India
    1473.6×
  42. 41Sakon NakhonSakon Nakhon, Thailand
    1473.6×
  43. 43Nakhon SawanNakhon Sawan, Thailand
    1453.5×
  44. 43CoronelBiobio, Chile
    1453.5×
  45. 45Vientianelow-cost sensorsVientiane Prefecture, Laos
    1443.5×
  46. 46VillarricaAraucania, Chile
    1413.4×
  47. 47Si Sa KetSi Sa Ket, Thailand
    1353.3×
  48. 48TemucoAraucania, Chile
    1343.3×
  49. 49ValdiviaLos Ríos Region, Chile
    1343.3×
  50. 50RatchaburiRatchaburi, Thailand
    1343.2×
  51. 50YasothonYasothon, Thailand
    1343.2×
  52. 52Khon KaenKhon Kaen, Thailand
    1323.2×
  53. 53Kinshasalow-cost sensorsKinshasa, Democratic Republic of the Congo
    1323.2×
  54. 54ChaiyaphumChaiyaphum, Thailand
    1313.2×
  55. 55Sing BuriSing Buri, Thailand
    1303.1×
  56. 56CatañoCataño, Puerto Rico
    1293.1×
  57. 57Roi EtRoi Et, Thailand
    1273.1×
  58. 58Ciudad Benito JuárezNuevo León, Mexico
    1273.1×
  59. 59KolkataWest Bengal, India
    1263.0×
  60. 60Chai NatChai Nat, Thailand
    1263.0×
  61. 61Lop BuriLopburi, Thailand
    1253.0×
  62. 62Bang NaBangkok, Thailand
    1202.9×
  63. 63PhetchaburiPhetchaburi, Thailand
    1202.9×
  64. 63Nakhon RatchasimaNakhon Ratchasima, Thailand
    1202.9×
  65. 65Nong KhaemBangkok, Thailand
    1202.9×
  66. 66CuricóMaule Region, Chile
    1192.9×
  67. 67Nakhon PathomNakhon Pathom, Thailand
    1172.8×
  68. 68LimaLima Province, Peru
    1172.8×
  69. 69BangkokBangkok, Thailand
    1162.8×
  70. 70Ban Samae DamBangkok, Thailand
    1162.8×
  71. 71RabinalBaja Verapaz, Guatemala
    1162.8×
  72. 72SaraburiSaraburi, Thailand
    1152.7×
  73. 73Phra PradaengSamut Prakan, Thailand
    1142.7×
  74. 74HualquiBiobio, Chile
    1142.7×
  75. 75LochristiFlanders, Belgium
    1122.7×
  76. 76Bang KapiBangkok, Thailand
    1122.7×
  77. 76Guatemala CityGuatemala, Guatemala
    1122.7×
  78. 78Victoria de DurangoDurango, Mexico
    1112.6×
  79. 79CairoCairo, Egypt
    1112.6×
  80. 80Samut SakhonSamut Sakhon, Thailand
    1112.6×
  81. 80Mueang NonthaburiNonthaburi, Thailand
    1112.6×
  82. 82Hua HinPrachuap Khiri Khan, Thailand
    1102.6×
  83. 83Phra Nakhon Si AyutthayaPhra Nakhon Si Ayutthaya, Thailand
    1102.6×
  84. 83Jardines de la SillaNuevo León, Mexico
    1102.6×
  85. 85Suphan BuriSuphan Buri, Thailand
    1092.6×
  86. 85JakartaJakarta, Indonesia
    1092.6×
  87. 87KanchanaburiKanchanaburi, Thailand
    1082.6×
  88. 88BaghdadBaghdad, Iraq
    1082.6×
  89. 89Lak SiBangkok, Thailand
    1082.5×
  90. 90Nakhon NayokNakhon Nayok, Thailand
    1072.5×
  91. 90Khlong LuangPathum Thani, Thailand
    1072.5×
  92. 90Ciudad ApodacaNuevo León, Mexico
    1072.5×
  93. 93PhuketPhuket, Thailand
    1072.5×
  94. 94ToméBiobio, Chile
    1072.5×
  95. 95Khan Na YaoBangkok, Thailand
    1052.5×
  96. 96MaldegemFlanders, Belgium
    1042.5×
  97. 96EvergemFlanders, Belgium
    1042.5×
  98. 98MonsWallonia, Belgium
    1032.4×
  99. 99ZwijndrechtFlanders, Belgium
    1032.4×
  100. 100Nong ChokBangkok, Thailand
    1022.4×
  101. 101TalcaMaule Region, Chile
    1012.4×
  102. 102Karachilow-cost sensorsSindh, Pakistan
    992.3×
  103. 103Ban Khlong PrawetBangkok, Thailand
    982.3×
  104. 104RengoO'Higgins Region, Chile
    982.3×
  105. 105Puerto AysénAysén, Chile
    972.2×
  106. 106RancaguaO'Higgins Region, Chile
    962.2×
  107. 107RanongRanong province, Thailand
    952.2×
  108. 108GentFlanders, Belgium
    942.2×
  109. 108AntwerpFlanders, Belgium
    942.2×
  110. 110StabroekFlanders, Belgium
    942.1×
  111. 111Si Maha PhotPrachin Buri, Thailand
    942.1×
  112. 111Laem ChabangChon Buri, Thailand
    942.1×
  113. 111Santa CatarinaNuevo León, Mexico
    942.1×
  114. 111SalamancaGuanajuato, Mexico
    942.1×
  115. 115KapellenFlanders, Belgium
    932.1×
  116. 116Mae SotTak, Thailand
    932.1×
  117. 117MissionTexas, United States
    932.1×
  118. 118BeverenFlanders, Belgium
    922.1×
  119. 118Lat KrabangBangkok, Thailand
    922.1×
  120. 120Cadereyta JiménezNuevo León, Mexico
    922.1×
  121. 121CelayaGuanajuato, Mexico
    912.1×
  122. 122Ban ChangRayong, Thailand
    912.0×
  123. 123Islamabadlow-cost sensorsIslamabad, Pakistan
    912.0×
  124. 124TepicNayarit, Mexico
    902.0×
  125. 125MolFlanders, Belgium
    892.0×
  126. 125TalaganteSantiago Metropolitan, Chile
    892.0×
  127. 127RoeselareFlanders, Belgium
    892.0×
  128. 128Buri RamBuriram, Thailand
    881.9×
  129. 129HanoiHanoi, Vietnam
    881.9×
  130. 129MonterreyNuevo León, Mexico
    881.9×
  131. 131MenenFlanders, Belgium
    881.9×
  132. 132Bang Bo DistrictSamut Prakan, Thailand
    881.9×
  133. 133ConcepciónBiobio, Chile
    871.9×
  134. 134TournaiWallonia, Belgium
    871.9×
  135. 134GrimbergenFlanders, Belgium
    871.9×
  136. 134San Pedro de la PazBiobio, Chile
    871.9×
  137. 137IzegemFlanders, Belgium
    861.9×
  138. 138Kampalalow-cost sensorsCentral Region, Uganda
    851.8×
  139. 139RayongRayong, Thailand
    841.8×
  140. 139KoksijdeFlanders, Belgium
    841.8×
  141. 141Ban Talat BuengChon Buri, Thailand
    841.8×
  142. 142KortrijkFlanders, Belgium
    841.8×
  143. 143GunsanJeollabuk-do, South Korea
    831.8×
  144. 143's-GravenzandeSouth Holland, The Netherlands
    831.8×
  145. 145SurinSurin, Thailand
    831.8×
  146. 146Addis AbabaAddis Ababa, Ethiopia
    831.7×
  147. 146SantiagoSantiago Metropolitan, Chile
    831.7×
  148. 148TangjinChungcheongnam-do, South Korea
    831.7×
  149. 149San Luis de la PazGuanajuato, Mexico
    821.7×
  150. 150NorthamptonEngland, United Kingdom
    821.7×
  151. 150BrusselsBrussels Capital, Belgium
    821.7×
  152. 152EdinburgTexas, United States
    821.7×
  153. 153ZaventemFlanders, Belgium
    821.7×
  154. 154AntananarivoAnalamanga, Madagascar
    811.7×
  155. 155MechelenFlanders, Belgium
    811.7×
  156. 156WillebroekFlanders, Belgium
    811.7×
  157. 157RotterdamSouth Holland, The Netherlands
    801.6×
  158. 157MaassluisSouth Holland, The Netherlands
    801.6×
  159. 157CoquimboCoquimbo Region, Chile
    801.6×
  160. 160León de los AldamaGuanajuato, Mexico
    801.6×
  161. 161DartfordEngland, United Kingdom
    801.6×
  162. 162ChiguayanteBiobio, Chile
    801.6×
  163. 163SpijkenisseSouth Holland, The Netherlands
    791.6×
  164. 163Puente AltoSantiago Metropolitan, Chile
    791.6×
  165. 163Ciudad General EscobedoNuevo León, Mexico
    791.6×
  166. 166RidderkerkSouth Holland, The Netherlands
    791.6×
  167. 167ShenyangLiaoning, China
    791.6×
  168. 167QuillotaValparaiso, Chile
    791.6×
  169. 169HasseltFlanders, Belgium
    791.6×
  170. 170YesanChungcheongnam-do, South Korea
    781.6×
  171. 171LiègeWallonia, Belgium
    781.6×
  172. 172AarschotFlanders, Belgium
    781.6×
  173. 173AricaArica y Parinacota Region, Chile
    771.6×
  174. 174IksanJeollabuk-do, South Korea
    771.5×
  175. 174MaarssenUtrecht, The Netherlands
    771.5×
  176. 176AshgabatAshgabat, Turkmenistan
    771.5×
  177. 176ShanghaiShanghai, China
    771.5×
  178. 178DamyangJeollanam-do, South Korea
    771.5×
  179. 179DushanbeDushanbe, Tajikistan
    771.5×
  180. 180AndenneWallonia, Belgium
    761.5×
  181. 180Bad KreuznachRheinland-Pfalz, Germany
    761.5×
  182. 182CharleroiWallonia, Belgium
    761.5×
  183. 183IncheonIncheon, South Korea
    761.5×
  184. 183Flémalle-HauteWallonia, Belgium
    761.5×
  185. 185HongseongChungcheongnam-do, South Korea
    751.5×
  186. 186CanterburyEngland, United Kingdom
    751.5×
  187. 186Canvey IslandEngland, United Kingdom
    751.5×
  188. 188QuinteroValparaiso, Chile
    751.5×
  189. 189YeojuGyeonggi-do, South Korea
    741.4×
  190. 189SeonghwanChungcheongnam-do, South Korea
    741.4×
  191. 189BuanJeollabuk-do, South Korea
    741.4×
  192. 189Ulan BatorUlaanbaatar, Mongolia
    741.4×
  193. 189HouthalenFlanders, Belgium
    741.4×
  194. 194Wan ChaiWan Chai, Hong Kong
    741.4×
  195. 195Hwaseong-siGyeonggi-do, South Korea
    741.4×
  196. 195JülichNorth Rhine-Westphalia, Germany
    741.4×
  197. 195Corpus ChristiTexas, United States
    741.4×
  198. 198BadhoevedorpNorth Holland, The Netherlands
    741.4×
  199. 198CopiapóAtacama, Chile
    741.4×
  200. 198Villa Poeta José Gálvez BarrenecheaLima region, Peru
    741.4×

Top 200 of 2,330 shown.

Good0–50
Moderate51–100
Sensitive groups101–150
Unhealthy151–200
Very unhealthy201–300
Hazardous301+

The US EPA's Air Quality Index for PM2.5 (2024 breakpoints). Show values as: µg/m³ · US AQI · India AQI · China AQI · European AQI · UK DAQI · Canada AQHI+. About the scales

Not covered: the government monitoring networks of China and Turkey, which publish no terms that let us reuse their readings. Most cities there are missing from this board, not clean. Why.

Use this board

SmogRank, most polluted cities, PM2.5, May 2, 2024, smogrank.com/history/2024-05-02 (accessed 3 Oct 2026).

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