France Seasonal Pollution
Find each city's worst and cleanest months from daily OpenAQ-derived EPA AQI. This pilot covers 272 eligible cities with OpenAQ-derived daily AQI history.
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Seasonal EPA AQI heatmap
JanFebMarAprMayJunJulAugSepOctNovDec
Grigny
70
67
-
-
-
-
-
-
-
-
-
-
Palaiseau
-
-
-
-
-
-
-
-
-
51
73
68
Saint-Denis
67
51
54
-
-
51
53
51
58
61
68
68
Saverne
-
-
-
-
-
-
48
51
53
53
70
64
Juvignac
-
61
60
54
55
55
56
60
54
52
57
54
Montlhéry
69
54
59
-
-
50
46
42
47
54
61
58
Passy
76
64
59
42
28
38
41
46
34
39
67
94
Gardanne
66
56
36
-
-
40
45
52
39
41
63
63
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.