Poland Seasonal Pollution
Find each city's worst and cleanest months from daily OpenAQ-derived EPA AQI. This pilot covers 155 eligible cities with OpenAQ-derived daily AQI history.
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Seasonal EPA AQI heatmap
JanFebMarAprMayJunJulAugSepOctNovDec
Karczew
-
-
-
-
-
-
-
-
-
-
134
133
Wejherowo
-
-
-
-
-
-
-
-
84
-
-
-
Katowice
95
80
94
69
62
65
63
67
70
79
91
97
Warsaw
-
-
-
-
72
65
58
61
76
82
93
99
Racibórz
92
74
92
60
57
56
52
58
62
79
85
96
Jastrzębie-Zdrój
95
71
85
61
58
58
56
60
63
76
82
93
Skarżysko-Kamienna
100
82
91
61
48
45
43
52
60
78
86
99
Zgierz
97
81
91
61
46
43
44
51
60
77
95
91
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.