SmogRank / History / January 29, 2024

Most polluted cities on January 29, 2024

2,204 cities ranked by their average PM2.5 over the day; the worst was Delhi, India, at 233.0 µg/m³. Each city's own local calendar day.

Bad-air episodes during January 29, 2024. All episodes.

← Delhi 233.0 µg/m³ 200 µg/m³15 WHO 24-hour guideline
Every city ranked for January 29, 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. 1DelhiDelhi, India
    31615.5×
  2. 2N'DjamenaN’Djaména, Chad
    26912.9×
  3. 3Dhakalow-cost sensorsDhaka Division, Bangladesh
    25612.1×
  4. 4KolkataWest Bengal, India
    24111.1×
  5. 5Ulan BatorUlaanbaatar, Mongolia
    23110.4×
  6. 6Abujalow-cost sensorsFCT, Nigeria
    2219.7×
  7. 7Kathmandulow-cost sensorsBagmati Province, Nepal
    1826.6×
  8. 8TlaquepaqueJalisco, Mexico
    1816.5×
  9. 9Kampalalow-cost sensorsCentral Region, Uganda
    1806.4×
  10. 10Almatylow-cost sensorsAlmaty, Kazakhstan
    1796.4×
  11. 11Islamabadlow-cost sensorsIslamabad, Pakistan
    1796.4×
  12. 12Peshawarlow-cost sensorsKhyber Pakhtunkhwa, Pakistan
    1725.7×
  13. 13KigaliKigali, Rwanda
    1715.6×
  14. 14Czechowice-DziedziceSilesia, Poland
    1685.4×
  15. 15NysaOpole Voivodeship, Poland
    1685.3×
  16. 16MumbaiMaharashtra, India
    1685.3×
  17. 17HyderabadTelangana, India
    1675.2×
  18. 18AstanaAstana, Kazakhstan
    1665.1×
  19. 19Banja LukaSrpska, Bosnia and Herzegovina
    1634.9×
  20. 20La OrotavaCanary Islands, Spain
    1624.7×
  21. 21SarajevoFederation of B&H, Bosnia and Herzegovina
    1614.7×
  22. 22SaronnoLombardy, Italy
    1614.6×
  23. 23RatchaburiRatchaburi, Thailand
    1584.4×
  24. 24KanchanaburiKanchanaburi, Thailand
    1574.3×
  25. 25LazarevacCentral Serbia, Serbia
    1564.2×
  26. 26DalmineLombardy, Italy
    1554.1×
  27. 27Santa Cruz de la PalmaCanary Islands, Spain
    1554.0×
  28. 28Hua HinPrachuap Khiri Khan, Thailand
    1544.0×
  29. 29Santa Cruz de TenerifeCanary Islands, Spain
    1544.0×
  30. 30ObrenovacCentral Serbia, Serbia
    1544.0×
  31. 31DziałdowoWarmia-Masuria, Poland
    1543.9×
  32. 32PhetchaburiPhetchaburi, Thailand
    1533.9×
  33. 33Samut SakhonSamut Sakhon, Thailand
    1533.9×
  34. 34KoprivnicaKoprivnica-Križevci, Croatia
    1523.8×
  35. 35Nakhon PathomNakhon Pathom, Thailand
    1523.8×
  36. 36DushanbeDushanbe, Tajikistan
    1523.8×
  37. 37HanoiHanoi, Vietnam
    1513.7×
  38. 38Nong KhaemBangkok, Thailand
    1503.7×
  39. 39KłodzkoLower Silesia, Poland
    1483.6×
  40. 40CapannoriTuscany, Italy
    1483.6×
  41. 41Lat KrabangBangkok, Thailand
    1463.6×
  42. 42Khlong LuangPathum Thani, Thailand
    1463.6×
  43. 43SmederevoCentral Serbia, Serbia
    1413.5×
  44. 44LučenecBanská Bystrica Region, Slovakia
    1413.4×
  45. 45Khlong Sam WaBangkok, Thailand
    1403.4×
  46. 46WłocławekKujawsko-Pomorskie, Poland
    1403.4×
  47. 47Ban Samae DamBangkok, Thailand
    1393.4×
  48. 48Ban ChangRayong, Thailand
    1383.4×
  49. 49Las Palmas de Gran CanariaCanary Islands, Spain
    1373.4×
  50. 50Granadilla de AbonaCanary Islands, Spain
    1363.3×
  51. 51TratTrat, Thailand
    1353.3×
  52. 52PinetownKwaZulu-Natal, South Africa
    1353.3×
  53. 53Bang Bo DistrictSamut Prakan, Thailand
    1353.3×
  54. 54MilanLombardy, Italy
    1353.3×
  55. 55Karachilow-cost sensorsSindh, Pakistan
    1333.2×
  56. 56Samut PrakanSamut Prakan, Thailand
    1323.2×
  57. 57ZemunCentral Serbia, Serbia
    1323.2×
  58. 58Bang NaBangkok, Thailand
    1313.2×
  59. 59PančevoVojvodina, Serbia
    1313.2×
  60. 59ChennaiTamil Nadu, India
    1313.2×
  61. 59CandelariaCanary Islands, Spain
    1313.2×
  62. 62GuangzhouGuangdong, China
    1293.1×
  63. 63Bueng KumBangkok, Thailand
    1293.1×
  64. 64San IsidroCanary Islands, Spain
    1283.1×
  65. 64BresciaLombardy, Italy
    1283.1×
  66. 66CodleaBrașov County, Romania
    1283.1×
  67. 67Lak SiBangkok, Thailand
    1283.1×
  68. 68TurinPiedmont, Italy
    1273.1×
  69. 69Saphan SungBangkok, Thailand
    1273.1×
  70. 70BelgradeCentral Serbia, Serbia
    1273.1×
  71. 71SremčicaCentral Serbia, Serbia
    1263.0×
  72. 71KatowiceSilesia, Poland
    1263.0×
  73. 71UžiceCentral Serbia, Serbia
    1263.0×
  74. 74RayongRayong, Thailand
    1263.0×
  75. 74AranyaprathetSa Kaeo, Thailand
    1263.0×
  76. 76BangkokBangkok, Thailand
    1222.9×
  77. 77AronaCanary Islands, Spain
    1222.9×
  78. 78Jastrzębie ZdrójSilesia, Poland
    1222.9×
  79. 79Phra PradaengSamut Prakan, Thailand
    1222.9×
  80. 80Mueang NonthaburiNonthaburi, Thailand
    1212.9×
  81. 80Khan Na YaoBangkok, Thailand
    1212.9×
  82. 82Phra Nakhon Si AyutthayaPhra Nakhon Si Ayutthaya, Thailand
    1212.9×
  83. 83Suphan BuriSuphan Buri, Thailand
    1202.9×
  84. 84Bang KapiBangkok, Thailand
    1192.9×
  85. 85CremonaLombardy, Italy
    1192.9×
  86. 86OlomoucOlomouc Region, Czechia
    1192.8×
  87. 87BergamoLombardy, Italy
    1182.8×
  88. 88BraPiedmont, Italy
    1182.8×
  89. 89ShenyangLiaoning, China
    1182.8×
  90. 90Nong ChokBangkok, Thailand
    1172.8×
  91. 90DěčínÚstí nad Labem Region, Czechia
    1172.8×
  92. 92OpoleOpole Voivodeship, Poland
    1172.8×
  93. 92Jelenia GóraLower Silesia, Poland
    1172.8×
  94. 94Bishkeklow-cost sensorsBishkek, Kyrgyzstan
    1172.8×
  95. 94San Tung Chung HangIslands, Hong Kong
    1172.8×
  96. 94Laem ChabangChon Buri, Thailand
    1172.8×
  97. 97Wodzisław ŚląskiSilesia, Poland
    1162.8×
  98. 98DejCluj County, Romania
    1152.7×
  99. 99Si Maha PhotPrachin Buri, Thailand
    1142.7×
  100. 100Ban Talat BuengChon Buri, Thailand
    1132.7×
  101. 100PřerovOlomouc Region, Czechia
    1132.7×
  102. 100Sai MaiBangkok, Thailand
    1132.7×
  103. 103VimercateLombardy, Italy
    1132.7×
  104. 104Lop BuriLopburi, Thailand
    1122.7×
  105. 104MonzaLombardy, Italy
    1122.7×
  106. 106YangonYangon, Myanmar
    1122.7×
  107. 107Mae SotTak, Thailand
    1112.6×
  108. 107Sing BuriSing Buri, Thailand
    1112.6×
  109. 109Ban Khlong PrawetBangkok, Thailand
    1112.6×
  110. 110KladnoCentral Bohemia, Czechia
    1102.6×
  111. 111Sha TinSha Tin, Hong Kong
    1092.6×
  112. 112StrumicaStrumica, North Macedonia
    1082.6×
  113. 112PoznańGreater Poland, Poland
    1082.6×
  114. 114Skarżysko-KamiennaŚwiętokrzyskie, Poland
    1082.6×
  115. 115TepliceÚstí nad Labem Region, Czechia
    1082.6×
  116. 116MidrandGauteng, South Africa
    1082.5×
  117. 117LampangLampang, Thailand
    1072.5×
  118. 117AlgiersAlgiers, Algeria
    1072.5×
  119. 119MaspalomasCanary Islands, Spain
    1062.5×
  120. 120Chai NatChai Nat, Thailand
    1062.5×
  121. 121Wan ChaiWan Chai, Hong Kong
    1052.5×
  122. 122KazincbarcikaBorsod-Abaúj-Zemplén, Hungary
    1042.4×
  123. 123OurenseGalicia, Spain
    1032.4×
  124. 124ColomboWestern Province, Sri Lanka
    1022.4×
  125. 125PrzemyślSubcarpathia, Poland
    1022.4×
  126. 126BydgoszczKujawsko-Pomorskie, Poland
    1022.4×
  127. 127SaraburiSaraburi, Thailand
    992.3×
  128. 128KościerzynaPomerania, Poland
    992.3×
  129. 129Tuen MunTuen Mun, Hong Kong
    992.3×
  130. 129PúchovTrenčín Region, Slovakia
    992.3×
  131. 131Nakhon SawanNakhon Sawan, Thailand
    982.3×
  132. 131AgüimesCanary Islands, Spain
    982.3×
  133. 133ParedesPorto, Portugal
    982.3×
  134. 134Novi PazarCentral Serbia, Serbia
    982.3×
  135. 134BerounCentral Bohemia, Czechia
    982.3×
  136. 136HavířovMoravian-Silesian Region, Czechia
    972.3×
  137. 136OviedoAsturias, Spain
    972.3×
  138. 138RacibórzSilesia, Poland
    972.3×
  139. 138KutnoŁódź Voivodeship, Poland
    972.3×
  140. 140WormsRheinland-Pfalz, Germany
    962.2×
  141. 140Gorzów WielkopolskiLubusz, Poland
    962.2×
  142. 140Novi SadVojvodina, Serbia
    962.2×
  143. 143Ústí nad LabemÚstí nad Labem Region, Czechia
    952.2×
  144. 144Mong KokYau Tsim Mong District, Hong Kong
    952.2×
  145. 145MiskolcBorsod-Abaúj-Zemplén, Hungary
    942.2×
  146. 146KościanGreater Poland, Poland
    942.1×
  147. 147Sainte-Geneviève-des-BoisÎle-de-France, France
    942.1×
  148. 148Nakhon RatchasimaNakhon Ratchasima, Thailand
    932.1×
  149. 149KaliszGreater Poland, Poland
    932.1×
  150. 150ComoLombardy, Italy
    932.1×
  151. 151Chiang MaiChiang Mai, Thailand
    922.1×
  152. 151PhetchabunPhetchabun, Thailand
    922.1×
  153. 153NišCentral Serbia, Serbia
    922.1×
  154. 153LamphunLamphun, Thailand
    922.1×
  155. 153MartinŽilina Region, Slovakia
    922.1×
  156. 153Hradec KrálovéHradec Králové Region, Czechia
    922.1×
  157. 157CairoCairo, Egypt
    912.0×
  158. 157VictoriaCentral and Western, Hong Kong
    912.0×
  159. 159KochaniKochani, North Macedonia
    912.0×
  160. 160NiskoSubcarpathia, Poland
    912.0×
  161. 160TocopillaAntofagasta, Chile
    912.0×
  162. 162ChanthaburiChanthaburi, Thailand
    912.0×
  163. 162PraguePrague, Czechia
    912.0×
  164. 164TeldeCanary Islands, Spain
    902.0×
  165. 164Frýdek-MístekMoravian-Silesian Region, Czechia
    902.0×
  166. 166BitolaBitola, North Macedonia
    902.0×
  167. 167JakartaJakarta, Indonesia
    902.0×
  168. 167Tin Shui WaiYuen Long, Hong Kong
    902.0×
  169. 169ŽilinaŽilina Region, Slovakia
    902.0×
  170. 170ZgierzŁódź Voivodeship, Poland
    902.0×
  171. 171Spišská Nová VesKošice Region, Slovakia
    892.0×
  172. 172Mae SaiChiang Rai, Thailand
    892.0×
  173. 173BailénAndalusia, Spain
    892.0×
  174. 173MostÚstí nad Labem Region, Czechia
    892.0×
  175. 173PesaroThe Marches, Italy
    892.0×
  176. 176BeauvaisHauts-de-France, France
    892.0×
  177. 176BakersfieldCalifornia, United States
    892.0×
  178. 178PietermaritzburgKwaZulu-Natal, South Africa
    892.0×
  179. 179MantuaLombardy, Italy
    881.9×
  180. 179JesiThe Marches, Italy
    881.9×
  181. 181ArucasCanary Islands, Spain
    881.9×
  182. 181ThionvilleGrand Est, France
    881.9×
  183. 183Sham Shui PoSham Shui Po District, Hong Kong
    881.9×
  184. 183Sau Mau PingKwun Tong District, Hong Kong
    881.9×
  185. 183GrazStyria, Austria
    881.9×
  186. 183HaguenauGrand Est, France
    881.9×
  187. 187SallanchesAuvergne-Rhône-Alpes, France
    871.9×
  188. 187PardubicePardubice Region, Czechia
    871.9×
  189. 187LitvínovÚstí nad Labem Region, Czechia
    871.9×
  190. 190MainzRheinland-Pfalz, Germany
    871.9×
  191. 190PljevljaPljevlja, Montenegro
    871.9×
  192. 192SukhothaiSukhothai, Thailand
    871.9×
  193. 192Nakhon NayokNakhon Nayok, Thailand
    871.9×
  194. 192KrakówLesser Poland, Poland
    871.9×
  195. 195ČadcaŽilina Region, Slovakia
    871.9×
  196. 196Tsuen WanTsuen Wan, Hong Kong
    861.9×
  197. 196TarbesOccitanie, France
    861.9×
  198. 198Tai PoTai Po, Hong Kong
    861.9×
  199. 198ToruńKujawsko-Pomorskie, Poland
    861.9×
  200. 200JarosławSubcarpathia, Poland
    861.8×

Top 200 of 2,204 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, January 29, 2024, smogrank.com/history/2024-01-29 (accessed 3 Oct 2026).

Download top 10 (PNG)

You're welcome to reuse a single chart, image or figure with this citation and a link. Terms.