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Worst Air Quality ZIP Codes in Wisconsin

Top 50 worst air quality zip codes in america in Wisconsin. ZIP-level data from EPA Air Quality Index.

Top 50

#	ZIP Code	City / Suburb	Median AQI
1	53005	Brookfield	43
2	53007	Butler	43
3	53018	Delafield	43
4	53029	Hartland	43
5	53045	Brookfield	43
6	53046	Lannon	43
7	53051	Menomonee Falls	43
8	53058	Nashotah	43
9	53066	Summit	43
10	53069	Okauchee Lake	43
11	53072	Pewaukee	43
12	53089	Sussex	43
13	53103	Big Bend	43
14	53110	Cudahy	43
15	53118	Dousman	43
16	53119	Eagle	43
17	53122	Elm Grove	43
18	53127	—	43
19	53129	Greendale	43
20	53130	Hales Corners	43
21	53132	Franklin	43
22	53146	New Berlin	43
23	53149	Mukwonago	43
24	53150	Muskego	43
25	53151	New Berlin	43
26	53153	North Prairie	43
27	53154	Oak Creek	43
28	53172	South Milwaukee	43
29	53183	Wales	43
30	53186	Waukesha	43
31	53188	Waukesha	43
32	53189	Waukesha	43
33	53202	Milwaukee	43
34	53203	Milwaukee	43
35	53204	Milwaukee	43
36	53205	Milwaukee	43
37	53206	Milwaukee	43
38	53207	Milwaukee	43
39	53208	Milwaukee	43
40	53209	Milwaukee	43
41	53210	Milwaukee	43
42	53211	Milwaukee	43
43	53212	Milwaukee	43
44	53213	Wauwatosa	43
45	53214	West Allis	43
46	53215	Milwaukee	43
47	53216	Milwaukee	43
48	53217	River Hills	43
49	53218	Milwaukee	43
50	53219	Milwaukee	43

Methodology

This ranking is based on EPA Air Quality Index data, scoped to Wisconsin ZIP codes. Up to 50 ZIP codes are listed, ordered by median aqi. Data is refreshed periodically. See our methodology page for full details on data sources and update frequency.

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Other states

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