Yesterday		Now		Yesterday		Now
Aix-en-provence		51		29		45		60
Almeria		18		7		40		42
Amsterdam		45		30		53		24
Andorra		-		-		31		31
Angoulême		-		-		43		42
Annecy		-		-		44		47
Annemasse		-		-		42		51
Arles		-		-		36		34
Avignon		27		29		47		65
Bahia Algeciras		44		1		82		38
Basel		46		36		35		43
Berlin		40		38		28		40
Bourg-en-Bresse		-		-		43		46
Bristol		36		-		17		-
Brno		27		12		32		33
Brussels		36		20		41		39
Cadiz		79		34		64		39
Cannes		-		-		47		53
Chambéry		-		-		44		48
Chamonix		45		14		38		43
Clermont-Ferrand		34		-		38		-
Cordoba		-		-		83		60
Coventry		21		13		-		-
Dunkerque		-		-		42		20
Freiburg		-		-		34		43
Gdansk		-		-		12		2
Gdynia		-		-		31		37
Granada		91		36		57		52
Graz		25		21		27		37
Grenoble		39		21		45		55
Huelva		77		43		84		54
Innsbruck		22		6		24		7
Jaen		-		-		60		60
Jerez		-		-		53		39
Karlsruhe		37		14		33		44
La Rochelle		-		-		38		23
Le Havre		38		21		32		23
Leicester		53		-		-		-
Lens		-		-		27		3
Lille		38		18		29		16
Linz		27		22		15		13
London		45		18		24		17
Lyon		62		51		43		62
Madrid		79		-		77		-
Malaga		-		-		60		42
Mannheim		42		22		34		45
Maribor		17		21		-		-
Marseille		84		39		47		58
Martigues		-		-		53		26
Melun		48		37		40		40
Montpellier		37		16		45		55
Mulhouse		-		-		36		44
Munich		76		20		34		42
Nancy		34		8		39		48
Nice		-		-		46		63
Nîmes		28		18		45		61
Niort		23		16		37		27
Orléans		32		23		44		48
Oslo		25		18		32		26
Padova		40		7		38		46
Paris		70		56		42		47
Perpignan		-		-		44		50
Poitiers		-		-		40		40
Prague		34		10		36		43
Reims		-		-		44		40
Rennes		36		23		35		25
Rome		-		-		-		-
Rotterdam		38		27		35		18
Rouen		43		22		43		37
Saint-Etienne		45		23		40		55
Salon de Provence		-		-		43		50
Salzburg		48		19		28		43
Sevilla		55		17		> 100		48
Sopot		-		-		31		11
Strasbourg		91		67		39		48
Stuttgart		52		47		27		43
Tczew		-		-		47		8
Toulon		64		19		58		58
Toulouse		44		20		87		49
Tours		25		18		37		40
Valence		63		21		44		52
Valenciennes		28		16		30		23
Zurich		34		14		36		44

The air quality is presented by an air quality index. The hourly index is updated every hour and allows you to see how air quality changes and evolves during the day. The daily index presents yesterday's overall air quality and is updated once a day. Air quality changes, for example subject to weather conditions. Compare the year average air quality for a general overview.