SmogRank / History / week of July 17, 2023

Most polluted cities, week of July 17, 2023

1,274 cities ranked by their average PM2.5 over the 7 days; the worst was Piedras Negras, Mexico, at 986.0 µg/m³. A city needs measurements on 70% of the days to be ranked.

  1. 1Piedras NegrasCoahuila, Mexico
    986.0
  2. 2DushanbeDushanbe, Tajikistan
    114.8
  3. 3Lahorelow-cost sensorsPunjab, Pakistan
    50.4
  4. 4Fort McMurrayAlberta, Canada
    44.7
  5. 5Peshawarlow-cost sensorsKhyber Pakhtunkhwa, Pakistan
    38.7
  6. 6AsprópyrgosAttica, Greece
    38.6
  7. 7EdmontonAlberta, Canada
    38.5
  8. 8TlaquepaqueJalisco, Mexico
    38.3
  9. 9HanoiHanoi, Vietnam
    36.2
  10. 10Santa Anita - Los FicusLima region, Peru
    35.3
  11. 11PristinaPristina, Kosovo
    35.2
  12. 12Dhakalow-cost sensorsDhaka Division, Bangladesh
    33.4
  13. 13MostaIl-Mosta, Malta
    32.9
  14. 14ShenyangLiaoning, China
    31.8
  15. 15XonacatlánMéxico, Mexico
    30.6
  16. 16DelhiDelhi, India
    30.5
  17. 16Grande PrairieAlberta, Canada
    30.5
  18. 18Karachilow-cost sensorsSindh, Pakistan
    29.8
  19. 19BeijingBeijing, China
    28.9
  20. 20Şabāḩ as SālimMubārak al Kabīr, Kuwait
    28.7
  21. 21Fort St. JohnBritish Columbia, Canada
    28.4
  22. 22SliemaTas-Sliema, Malta
    28.3
  23. 23SarajevoFederation of B&H, Bosnia and Herzegovina
    28.2
  24. 24ChennaiTamil Nadu, India
    28.1
  25. 25Prince AlbertSaskatchewan, Canada
    27.8
  26. 26MexicaliBaja California, Mexico
    27.6
  27. 27AlgiersAlgiers, Algeria
    27.4
  28. 28LimaLima Province, Peru
    27.2
  29. 29Ciudad ApodacaNuevo León, Mexico
    26.7
  30. 30CatañoCataño, Puerto Rico
    26.6
  31. 30SaskatoonSaskatchewan, Canada
    26.6
  32. 32CuencaCastille-La Mancha, Spain
    26.2
  33. 33AlbanyGeorgia, United States
    25.3
  34. 34SalorTashkent Region, Uzbekistan
    25.1
  35. 35ŻabbarĦaż-Żabbar, Malta
    24.6
  36. 35MaconGeorgia, United States
    24.6
  37. 35Warner RobinsGeorgia, United States
    24.6
  38. 38Islamabadlow-cost sensorsIslamabad, Pakistan
    24.2
  39. 39San Francisco De BorjaLima region, Peru
    24.0
  40. 40Winston-SalemNorth Carolina, United States
    23.2
  41. 41McDonoughGeorgia, United States
    23.1
  42. 42CranbrookBritish Columbia, Canada
    22.7
  43. 43UkiahCalifornia, United States
    22.5
  44. 44BamakoBamako, Mali
    22.4
  45. 45AntananarivoAnalamanga, Madagascar
    21.7
  46. 45Le RobertMartinique, Martinique
    21.7
  47. 45ReginaSaskatchewan, Canada
    21.7
  48. 48Swift CurrentSaskatchewan, Canada
    21.6
  49. 49ValdostaGeorgia, United States
    21.4
  50. 50ClemmonsNorth Carolina, United States
    21.1
  51. 51Ciudad JuárezChihuahua, Mexico
    21.0
  52. 51Candler-McAfeeGeorgia, United States
    21.0
  53. 53GainesvilleGeorgia, United States
    20.9
  54. 53BensalemPennsylvania, United States
    20.9
  55. 55TolucaMéxico, Mexico
    20.7
  56. 56SpartanburgSouth Carolina, United States
    20.6
  57. 57Le LamentinMartinique, Martinique
    20.5
  58. 58HueytownAlabama, United States
    20.4
  59. 58CantonOhio, United States
    20.4
  60. 58LancasterPennsylvania, United States
    20.4
  61. 58BurlingtonVermont, United States
    20.4
  62. 62RaleighNorth Carolina, United States
    20.3
  63. 63BirminghamAlabama, United States
    20.1
  64. 63AlbanyNew York, United States
    20.1
  65. 63WarrenOhio, United States
    20.1
  66. 63WestervilleOhio, United States
    20.1
  67. 67La Línea de la ConcepciónAndalusia, Spain
    20.0
  68. 67BrandonManitoba, Canada
    20.0
  69. 69Phenix CityAlabama, United States
    19.9
  70. 69HarrisburgPennsylvania, United States
    19.9
  71. 71GreensboroNorth Carolina, United States
    19.8
  72. 71ElizabethNew Jersey, United States
    19.8
  73. 71Red DeerAlberta, Canada
    19.8
  74. 74GuadalajaraJalisco, Mexico
    19.7
  75. 75SpringfieldOhio, United States
    19.6
  76. 75ClevelandOhio, United States
    19.6
  77. 77PhiladelphiaPennsylvania, United States
    19.5
  78. 78AthensAttica, Greece
    19.4
  79. 78CharlotteNorth Carolina, United States
    19.4
  80. 78BethlehemPennsylvania, United States
    19.4
  81. 78St. AlbertAlberta, Canada
    19.4
  82. 82Fort-de-FranceMartinique, Martinique
    19.3
  83. 83MorrisvilleNorth Carolina, United States
    19.2
  84. 83GreenvilleSouth Carolina, United States
    19.2
  85. 85Santa CatarinaNuevo León, Mexico
    19.1
  86. 85Ciudad Benito JuárezNuevo León, Mexico
    19.1
  87. 85West MifflinPennsylvania, United States
    19.1
  88. 88ChihuahuaChihuahua, Mexico
    19.0
  89. 88CalgaryAlberta, Canada
    19.0
  90. 88Sherwood ParkAlberta, Canada
    19.0
  91. 91SavannahGeorgia, United States
    18.9
  92. 91East RidgeTennessee, United States
    18.9
  93. 93MálagaAndalusia, Spain
    18.8
  94. 93MóstolesMadrid, Spain
    18.8
  95. 93SpringdaleArkansas, United States
    18.8
  96. 93LawrencevilleGeorgia, United States
    18.8
  97. 93PittsburghPennsylvania, United States
    18.8
  98. 98TrnavaTrnava Region, Slovakia
    18.7
  99. 99Collado-VillalbaMadrid, Spain
    18.6
  100. 99CelayaGuanajuato, Mexico
    18.6
  101. 99TrentonNew Jersey, United States
    18.6
  102. 102KnoxvilleTennessee, United States
    18.5
  103. 102YoungstownOhio, United States
    18.5
  104. 102AllentownPennsylvania, United States
    18.5
  105. 105NorristownPennsylvania, United States
    18.4
  106. 106San RoqueAndalusia, Spain
    18.2
  107. 106AtlantaGeorgia, United States
    18.2
  108. 106PennsaukenNew Jersey, United States
    18.2
  109. 106Rose HillVirginia, United States
    18.2
  110. 110BitolaBitola, North Macedonia
    18.1
  111. 110SalamancaGuanajuato, Mexico
    18.1
  112. 110NewarkDelaware, United States
    18.1
  113. 110CheektowagaNew York, United States
    18.1
  114. 110LebanonPennsylvania, United States
    18.1
  115. 115BakuBaki, Azerbaijan
    18.0
  116. 115San Mateo AtencoMéxico, Mexico
    18.0
  117. 115LexingtonNorth Carolina, United States
    18.0
  118. 115West FargoNorth Dakota, United States
    18.0
  119. 115Rapid CitySouth Dakota, United States
    18.0
  120. 120IndianapolisIndiana, United States
    17.9
  121. 120HickoryNorth Carolina, United States
    17.9
  122. 120DaytonOhio, United States
    17.9
  123. 120LansingMichigan, United States
    17.9
  124. 124FlorenceSouth Carolina, United States
    17.8
  125. 124HoustonTexas, United States
    17.8
  126. 124DublinOhio, United States
    17.8
  127. 124CarlislePennsylvania, United States
    17.8
  128. 128BrunswickGeorgia, United States
    17.7
  129. 128WilkinsburgPennsylvania, United States
    17.7
  130. 128L'Ancienne-LoretteQuebec, Canada
    17.7
  131. 131ChattanoogaTennessee, United States
    17.6
  132. 131EwingNew Jersey, United States
    17.6
  133. 131EriePennsylvania, United States
    17.6
  134. 131ScrantonPennsylvania, United States
    17.6
  135. 135ClaytonNorth Carolina, United States
    17.5
  136. 135GalvestonTexas, United States
    17.5
  137. 135AkronOhio, United States
    17.5
  138. 138MoreliaMichoacán, Mexico
    17.4
  139. 138ShreveportLouisiana, United States
    17.4
  140. 138BuffaloNew York, United States
    17.4
  141. 138MedinaOhio, United States
    17.4
  142. 138AltoonaPennsylvania, United States
    17.4
  143. 138State CollegePennsylvania, United States
    17.4
  144. 144ReadingPennsylvania, United States
    17.3
  145. 145AndersonIndiana, United States
    17.2
  146. 145LindenNew Jersey, United States
    17.2
  147. 145PatersonNew Jersey, United States
    17.2
  148. 145Shaker HeightsOhio, United States
    17.2
  149. 145TurlockCalifornia, United States
    17.2
  150. 150Alcalá de HenaresMadrid, Spain
    17.1
  151. 150HuntsvilleAlabama, United States
    17.1
  152. 150SpringfieldVirginia, United States
    17.1
  153. 150YumaArizona, United States
    17.1
  154. 154GreenvilleNorth Carolina, United States
    17.0
  155. 154Saint AndrewsSouth Carolina, United States
    17.0
  156. 156AcharnésAttica, Greece
    16.9
  157. 156TrussvilleAlabama, United States
    16.9
  158. 156New BrunswickNew Jersey, United States
    16.9
  159. 156RutlandVermont, United States
    16.9
  160. 156BakersfieldCalifornia, United States
    16.9
  161. 156Yuba CityCalifornia, United States
    16.9
  162. 162JaénAndalusia, Spain
    16.8
  163. 162BaytownTexas, United States
    16.8
  164. 162CharlottesvilleVirginia, United States
    16.8
  165. 162SteubenvilleOhio, United States
    16.8
  166. 166GranadaAndalusia, Spain
    16.7
  167. 166AustinTexas, United States
    16.7
  168. 166RochesterNew York, United States
    16.7
  169. 169GuangzhouGuangdong, China
    16.6
  170. 169WilmingtonDelaware, United States
    16.6
  171. 169Missouri CityTexas, United States
    16.6
  172. 169GreenfieldMassachusetts, United States
    16.6
  173. 169El CentroCalifornia, United States
    16.6
  174. 174SaltilloCoahuila, Mexico
    16.5
  175. 174DallasTexas, United States
    16.5
  176. 174New CityNew York, United States
    16.5
  177. 177TijuanaBaja California, Mexico
    16.4
  178. 177MonterreyNuevo León, Mexico
    16.4
  179. 177Fort LauderdaleFlorida, United States
    16.4
  180. 177YorkPennsylvania, United States
    16.4
  181. 177PittsfieldMassachusetts, United States
    16.4
  182. 177KeeneNew Hampshire, United States
    16.4
  183. 177McKeesportPennsylvania, United States
    16.4
  184. 177MaderaCalifornia, United States
    16.4
  185. 177VisaliaCalifornia, United States
    16.4
  186. 186BaltimoreMaryland, United States
    16.3
  187. 186MaryvilleTennessee, United States
    16.3
  188. 186Fort WorthTexas, United States
    16.3
  189. 186SyracuseNew York, United States
    16.3
  190. 186CalexicoCalifornia, United States
    16.3
  191. 191Little RockArkansas, United States
    16.2
  192. 191MiddletownOhio, United States
    16.2
  193. 191New York CityNew York, United States
    16.2
  194. 191FresnoCalifornia, United States
    16.2
  195. 191Great FallsMontana, United States
    16.2
  196. 196PiraeusAttica, Greece
    16.1
  197. 196TorreviejaValencia, Spain
    16.1
  198. 196AlgeteMadrid, Spain
    16.1
  199. 196WashingtonDistrict of Columbia, United States
    16.1
  200. 196TexarkanaTexas, United States
    16.1

Top 200 of 1,274 shown.

Good0–9.0
Moderate9.1–35.4
Sensitive groups35.5–55.4
Unhealthy55.5–125.4
Very unhealthy125.5–225.4
Hazardous225.5+