Sweden Seasonal Pollution
Find each city's worst and cleanest months from daily OpenAQ-derived EPA AQI. This pilot covers 31 eligible cities with OpenAQ-derived daily AQI history.
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Seasonal EPA AQI heatmap
JanFebMarAprMayJunJulAugSepOctNovDec
Malmö
39
38
63
33
35
33
24
33
35
38
32
33
Gothenburg
38
33
43
-
41
38
30
14
29
38
33
34
Kalmar
53
38
57
33
40
34
25
31
31
35
26
29
Skellefteå
20
26
-
62
49
27
28
35
23
42
22
20
Visby
29
41
55
34
36
33
29
34
34
29
22
28
Malmo
37
33
53
30
39
32
23
32
30
36
30
33
Tumba
40
36
56
40
41
33
30
30
28
30
23
25
Linköping
24
38
43
32
37
30
24
32
31
28
21
24
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.