SmogRank / History / February 2, 2023

Most polluted cities on February 2, 2023

1,180 cities ranked by their average PM2.5 over the day; the worst was Marigliano, Italy, at 81.4 µg/m³. Each city's own local calendar day.

OpenAQ's archive, where our readings come from, has almost none for this day. Cities in the United States and Europe have it from the EPA's and the European Environment Agency's own records of the same monitors; many cities elsewhere are missing from this board, not clean. Why.

Bad-air episodes during February 2, 2023. All episodes.

← Marigliano 81.4 µg/m³ 80 µg/m³15 WHO 24-hour guideline
Every city ranked for February 2, 2023, 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. 1MariglianoCampania, Italy
    1695.4×
  2. 2KoperUrban Municipality of Koper, Slovenia
    1624.7×
  3. 3AcerraCampania, Italy
    1533.9×
  4. 4Banja LukaSrpska, Bosnia and Herzegovina
    1523.8×
  5. 5Novo MestoUrban Municipality of Novo Mesto, Slovenia
    1513.7×
  6. 6StrumicaStrumica, North Macedonia
    1493.7×
  7. 7LjubljanaLjubljana, Slovenia
    1473.6×
  8. 8KranjUrban Municipality of Kranj, Slovenia
    1403.4×
  9. 9GevgelijaGevgelija, North Macedonia
    1403.4×
  10. 10SkopjeGrad Skopje, North Macedonia
    1343.3×
  11. 11BihaćFederation of B&H, Bosnia and Herzegovina
    1333.2×
  12. 12RijekaPrimorje-Gorski Kotar, Croatia
    1323.2×
  13. 13BailénAndalusia, Spain
    1313.2×
  14. 14Nocera InferioreCampania, Italy
    1303.2×
  15. 15KavadarciKavadarci, North Macedonia
    1253.0×
  16. 16AmoraSetúbal, Portugal
    1253.0×
  17. 17TetovoTetovo, North Macedonia
    1172.8×
  18. 18TrbovljeMunicipality of Trbovlje, Slovenia
    1152.7×
  19. 19MillcreekUtah, United States
    1152.7×
  20. 20PrilepPrilep, North Macedonia
    1142.7×
  21. 20StocktonCalifornia, United States
    1142.7×
  22. 22GalatinaApulia, Italy
    1112.6×
  23. 22West JordanUtah, United States
    1112.6×
  24. 24LecceApulia, Italy
    1102.6×
  25. 25North OgdenUtah, United States
    1062.5×
  26. 26San Felice A CancelloCampania, Italy
    1032.4×
  27. 27TurinPiedmont, Italy
    1032.4×
  28. 28Salt Lake CityUtah, United States
    1022.4×
  29. 29ModestoCalifornia, United States
    1002.4×
  30. 30HillsboroOregon, United States
    992.3×
  31. 31SallanchesAuvergne-Rhône-Alpes, France
    982.3×
  32. 32West Valley CityUtah, United States
    972.3×
  33. 33San SeveroApulia, Italy
    962.2×
  34. 34PátraWest Greece, Greece
    952.2×
  35. 34BeneventoCampania, Italy
    952.2×
  36. 36AthensAttica, Greece
    942.2×
  37. 36MagnaUtah, United States
    942.2×
  38. 38GreeleyColorado, United States
    922.1×
  39. 39Ciudad RealCastille-La Mancha, Spain
    912.0×
  40. 40VigoGalicia, Spain
    892.0×
  41. 41Arden-ArcadeCalifornia, United States
    892.0×
  42. 42VancouverWashington, United States
    892.0×
  43. 43HanfordCalifornia, United States
    881.9×
  44. 44PejëPec, Kosovo
    861.9×
  45. 45SevillaAndalusia, Spain
    861.9×
  46. 46ValdemoroMadrid, Spain
    861.8×
  47. 47KochaniKochani, North Macedonia
    851.8×
  48. 48TigardOregon, United States
    851.8×
  49. 49KorçëKorçë County, Albania
    851.8×
  50. 49CeljeUrban Municipality of Celje, Slovenia
    851.8×
  51. 51GjilanGjilan, Kosovo
    841.8×
  52. 52IlindenIlinden, North Macedonia
    841.8×
  53. 52MostarFederation of B&H, Bosnia and Herzegovina
    841.8×
  54. 54ButteMontana, United States
    841.8×
  55. 55TurlockCalifornia, United States
    821.7×
  56. 55OremUtah, United States
    821.7×
  57. 57ThessaloníkiCentral Macedonia, Greece
    821.7×
  58. 58EugeneOregon, United States
    811.7×
  59. 59TorreviejaValencia, Spain
    811.7×
  60. 59Grants PassOregon, United States
    811.7×
  61. 61DaxNew Aquitaine, France
    801.7×
  62. 61PesaroThe Marches, Italy
    801.7×
  63. 63AvellinoCampania, Italy
    801.6×
  64. 64ReddingCalifornia, United States
    801.6×
  65. 65PiraeusAttica, Greece
    791.6×
  66. 65FredrikstadØstfold, Norway
    791.6×
  67. 67LillestrømAkershus, Norway
    791.6×
  68. 68Yuba CityCalifornia, United States
    791.6×
  69. 68YakimaWashington, United States
    791.6×
  70. 70SarpsborgØstfold, Norway
    781.6×
  71. 71CorroiosSetúbal, Portugal
    771.6×
  72. 71ValenciaValencia, Spain
    771.6×
  73. 73Spišská Nová VesKošice Region, Slovakia
    771.5×
  74. 74LisbonLisbon, Portugal
    771.5×
  75. 74KoprivnicaKoprivnica-Križevci, Croatia
    771.5×
  76. 76CasamassimaApulia, Italy
    771.5×
  77. 76CorcoranCalifornia, United States
    771.5×
  78. 78SacramentoCalifornia, United States
    761.5×
  79. 79OhridOhrid, North Macedonia
    761.5×
  80. 79PleasantonCalifornia, United States
    761.5×
  81. 81Cava Dè TirreniCampania, Italy
    751.5×
  82. 82HumennéPrešov Region, Slovakia
    751.5×
  83. 83AcharnésAttica, Greece
    741.4×
  84. 83BitolaBitola, North Macedonia
    741.4×
  85. 83MonopoliApulia, Italy
    741.4×
  86. 86JaénAndalusia, Spain
    731.4×
  87. 86CuencaCastille-La Mancha, Spain
    731.4×
  88. 86BakersfieldCalifornia, United States
    731.4×
  89. 86HerrimanUtah, United States
    731.4×
  90. 90MitrovicëMitrovica, Kosovo
    731.4×
  91. 90NiortNew Aquitaine, France
    731.4×
  92. 90HernaniBasque Country, Spain
    731.4×
  93. 93Klagenfurt am WörtherseeCarinthia, Austria
    731.4×
  94. 94MercedCalifornia, United States
    721.4×
  95. 94Carson CityNevada, United States
    721.4×
  96. 96IaşiIași County, Romania
    721.4×
  97. 97ParklandWashington, United States
    721.3×
  98. 98HernandoMississippi, United States
    711.3×
  99. 99LugoGalicia, Spain
    711.3×
  100. 100NaplesCampania, Italy
    711.3×
  101. 101BrindisiApulia, Italy
    711.3×
  102. 101JeffersontownKentucky, United States
    711.3×
  103. 103CasertaCampania, Italy
    711.3×
  104. 104NairobiNairobi County, Kenya
    701.3×
  105. 105LivermoreCalifornia, United States
    701.3×
  106. 105TooeleUtah, United States
    701.3×
  107. 107BariApulia, Italy
    701.3×
  108. 107NewarkDelaware, United States
    701.3×
  109. 109GardanneProvence-Alpes-Côte d'Azur, France
    701.3×
  110. 109ElizabethtownKentucky, United States
    701.3×
  111. 111VillenaValencia, Spain
    691.3×
  112. 111RichmondCalifornia, United States
    691.3×
  113. 113IngenioCanary Islands, Spain
    691.3×
  114. 114AngoulêmeNew Aquitaine, France
    691.2×
  115. 114SteubenvilleOhio, United States
    691.2×
  116. 114OaklandCalifornia, United States
    691.2×
  117. 114VisaliaCalifornia, United States
    691.2×
  118. 118AsprópyrgosAttica, Greece
    691.2×
  119. 118West MifflinPennsylvania, United States
    691.2×
  120. 120Collado-VillalbaMadrid, Spain
    681.2×
  121. 120PortlandOregon, United States
    681.2×
  122. 122HamarInnlandet, Norway
    681.2×
  123. 123ArrecifeCanary Islands, Spain
    681.2×
  124. 123GetxoBasque Country, Spain
    681.2×
  125. 123RosevilleCalifornia, United States
    681.2×
  126. 123TacomaWashington, United States
    681.2×
  127. 127MontaubanOccitanie, France
    681.2×
  128. 128OsloOslo, Norway
    671.2×
  129. 128WoodlandCalifornia, United States
    671.2×
  130. 130BelgradeCentral Serbia, Serbia
    671.2×
  131. 130BensalemPennsylvania, United States
    671.2×
  132. 132LimogesNew Aquitaine, France
    671.2×
  133. 132LeónCastille and León, Spain
    671.2×
  134. 132JacksonTennessee, United States
    671.2×
  135. 135San RafaelCalifornia, United States
    661.2×
  136. 136PorsgrunnTelemark, Norway
    661.2×
  137. 136MissoulaMontana, United States
    661.2×
  138. 138PtujUrban Municipality of Ptuj, Slovenia
    661.1×
  139. 138BerkeleyCalifornia, United States
    661.1×
  140. 140La RochelleNew Aquitaine, France
    661.1×
  141. 140OwensboroKentucky, United States
    661.1×
  142. 142CacémLisbon, Portugal
    661.1×
  143. 142AltamontOregon, United States
    661.1×
  144. 144ThorntonColorado, United States
    661.1×
  145. 145Kosovo PoljePristina, Kosovo
    651.1×
  146. 145Saint MatthewsKentucky, United States
    651.1×
  147. 145San FranciscoCalifornia, United States
    651.1×
  148. 145KentWashington, United States
    651.1×
  149. 149PuertollanoCastille-La Mancha, Spain
    651.1×
  150. 149LouisvilleKentucky, United States
    651.1×
  151. 149FresnoCalifornia, United States
    651.1×
  152. 149Santa RosaCalifornia, United States
    651.1×
  153. 153BordeauxNew Aquitaine, France
    651.1×
  154. 153CosladaMadrid, Spain
    651.1×
  155. 153ClarksvilleTennessee, United States
    651.1×
  156. 153LancasterPennsylvania, United States
    651.1×
  157. 153San LeandroCalifornia, United States
    651.1×
  158. 158TarantoApulia, Italy
    651.1×
  159. 158Falconara MarittimaThe Marches, Italy
    651.1×
  160. 158Valley StationKentucky, United States
    651.1×
  161. 158CantonOhio, United States
    651.1×
  162. 162WolfsbergCarinthia, Austria
    641.1×
  163. 163Bourg-en-BresseAuvergne-Rhône-Alpes, France
    641.1×
  164. 163NorwoodOhio, United States
    641.1×
  165. 165Las Palmas de Gran CanariaCanary Islands, Spain
    641.1×
  166. 165MossØstfold, Norway
    641.1×
  167. 165PennsaukenNew Jersey, United States
    641.1×
  168. 168GranadaAndalusia, Spain
    641.1×
  169. 168JesiThe Marches, Italy
    641.1×
  170. 170ToulouseOccitanie, France
    641.1×
  171. 170Ceglie MessapicaApulia, Italy
    641.1×
  172. 170VallejoCalifornia, United States
    641.1×
  173. 173OviedoAsturias, Spain
    631.1×
  174. 173ReadingPennsylvania, United States
    631.1×
  175. 175Mont-de-MarsanNew Aquitaine, France
    631.0×
  176. 176MóstolesMadrid, Spain
    631.0×
  177. 177La SpeziaLiguria, Italy
    631.0×
  178. 177BethlehemPennsylvania, United States
    631.0×
  179. 179RēzekneRēzekne, Latvia
    631.0×
  180. 179TarbesOccitanie, France
    631.0×
  181. 179ModugnoApulia, Italy
    631.0×
  182. 179Spanish SpringsNevada, United States
    631.0×
  183. 179MedfordOregon, United States
    631.0×
  184. 184ToledoCastille-La Mancha, Spain
    621.0×
  185. 184Santa Cruz de TenerifeCanary Islands, Spain
    621.0×
  186. 184Granadilla de AbonaCanary Islands, Spain
    621.0×
  187. 184CharlottesvilleVirginia, United States
    621.0×
  188. 184SpringfieldVirginia, United States
    621.0×
  189. 184AllentownPennsylvania, United States
    621.0×
  190. 184LebanonPennsylvania, United States
    621.0×
  191. 191CartagenaMurcia, Spain
    621.0×
  192. 191LongmontColorado, United States
    621.0×
  193. 193GostivarGostivar, North Macedonia
    621.0×
  194. 193PérigueuxNew Aquitaine, France
    621.0×
  195. 193PauNew Aquitaine, France
    621.0×
  196. 193MadridMadrid, Spain
    621.0×
  197. 193AmorebietaBasque Country, Spain
    621.0×
  198. 193JeffersonvilleIndiana, United States
    621.0×
  199. 193HarrisburgPennsylvania, United States
    621.0×
  200. 200Puerto del RosarioCanary Islands, Spain
    621.0×

Top 200 of 1,180 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

Use this board

SmogRank, most polluted cities, PM2.5, February 2, 2023, smogrank.com/history/2023-02-02 (accessed 2 Oct 2026).

Download top 10 (PNG)

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