Hong Kong Seasonal Pollution
Find each city's worst and cleanest months from daily OpenAQ-derived EPA AQI. This pilot covers 11 eligible cities with OpenAQ-derived daily AQI history.
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Seasonal EPA AQI heatmap
JanFebMarAprMayJunJulAugSepOctNovDec
Hong Kong
100
79
91
76
73
62
60
70
74
81
78
108
Tin Shui Wai
89
72
74
63
58
43
37
56
59
72
74
106
Sham Shui Po
83
66
74
64
60
44
36
51
54
65
63
90
Wan Tau Tong
73
62
68
60
54
43
34
55
56
68
66
97
San Tung Chung Hang
83
62
68
57
57
34
28
52
52
68
66
101
Shek Wai Kok
80
66
70
61
55
38
33
53
53
64
60
89
Kwai Chung
73
60
67
60
55
43
34
56
53
65
62
93
Central District
72
51
57
53
52
54
38
52
51
63
61
82
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.