Czech Republic Seasonal Pollution
Find each city's worst and cleanest months from daily OpenAQ-derived EPA AQI. This pilot covers 61 eligible cities with OpenAQ-derived daily AQI history.
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Seasonal EPA AQI heatmap
JanFebMarAprMayJunJulAugSepOctNovDec
Turnov
-
-
-
-
-
-
-
-
-
117
107
97
Hostivice
-
-
-
-
-
-
-
-
-
-
88
81
Kralupy nad Vltavou
112
85
97
56
62
61
54
62
59
82
105
86
Bystrc
-
-
-
-
-
61
56
-
64
75
100
78
Říčany
-
-
-
-
-
-
55
64
60
78
97
81
Teplice
92
70
88
52
55
61
49
60
58
75
92
86
Poděbrady
91
75
84
54
57
57
52
64
59
58
77
67
Šumbark
76
58
68
56
53
53
54
56
52
70
71
80
Methodology
The extractor maps OpenAQ monitoring locations to the nearest AQI Now city in the same country, aggregates PM2.5 and PM10 to daily city averages, and converts those concentrations to US EPA AQI. Country tool pages use only city summaries that satisfy the configured minimum daily coverage threshold.