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Worst Air Quality ZIP Codes in America

Ranked list of ZIP codes with the worst air quality in the US by median AQI.

Top 100

#	ZIP Code	City / Suburb	State	Median AQI
1	91701	Rancho Cucamonga	CA	87
2	91708	Chino	CA	87
3	91709	Chino Hills	CA	87
4	85003	Phoenix	AZ	77
5	85004	Phoenix	AZ	77
6	85006	Phoenix	AZ	77
7	79821	Anthony	TX	67
8	79835	Canutillo	TX	67
9	79836	Clint	TX	67
10	89002	Henderson	NV	64
11	89004	Blue Diamond	NV	64
12	89005	Boulder City	NV	64
13	87936	Garfield	NM	62
14	87937	Hatch	NM	62
15	87940	Rincon	NM	62
16	35005	Adamsville	AL	57
17	35006	North Johns	AL	57
18	35020	Bessemer	AL	57
19	38002	Lakeland	TN	55
20	38016	Memphis	TN	55
21	38017	Collierville	TN	55
22	48101	Allen Park	MI	55
23	48111	Belleville	MI	55
24	48120	Dearborn	MI	55
25	72053	College Station	AR	55
26	72076	Jacksonville	AR	55
27	72099	Jacksonville	AR	55
28	80011	Aurora	CO	55
29	80019	Aurora	CO	55
30	80022	Commerce City	CO	55
31	44017	Berea	OH	54
32	44022	Hunting Valley	OH	54
33	44040	Gates Mills	OH	54
34	46107	Beech Grove	IN	54
35	46183	Indianapolis	IN	54
36	46201	Indianapolis	IN	54
37	60004	Arlington Heights	IL	54
38	60005	Arlington Heights	IL	54
39	60007	Elk Grove Village	IL	54
40	63005	Wildwood	MO	54
41	63011	Ballwin	MO	54
42	63017	Chesterfield	MO	54
43	84006	West Jordan	UT	54
44	84009	South Jordan	UT	54
45	84020	Draper	UT	54
46	30017	Grayson	GA	53
47	30019	Dacula	GA	53
48	30024	Suwanee	GA	53
49	15006	Bairdford	PA	52
50	15007	Bakerstown	PA	52
51	15014	Brackenridge	PA	52
52	73003	Edmond	OK	52
53	73007	Edmond	OK	52
54	73008	Bethany	OK	52
55	27503	Durham	NC	51
56	27701	Durham	NC	51
57	27703	Durham	NC	51
58	70501	Lafayette	LA	51
59	70503	Lafayette	LA	51
60	70506	Lafayette	LA	51
61	32202	Jacksonville	FL	50
62	32203	Jacksonville	FL	50
63	32204	Jacksonville	FL	50
64	40023	Louisville/Jefferson County metro government	KY	50
65	40025	Glenview	KY	50
66	40041	Louisville	KY	50
67	82055	Centennial	WY	50
68	82070	Laramie	WY	50
69	82072	Laramie	WY	50
70	29301	Spartanburg	SC	49
71	29302	Spartanburg	SC	49
72	29303	Southern Shops	SC	49
73	59917	Indian Springs	MT	49
74	59918	Fortine	MT	49
75	59923	Happys Inn	MT	49
76	97817	Greenhorn	OR	49
77	97820	Canyon City	OR	49
78	97825	Dayville	OR	49
79	39041	Clinton	MS	48
80	39056	Clinton	MS	48
81	39058	Clinton	MS	48
82	83602	Banks	ID	48
83	83622	Garden Valley	ID	48
84	83629	Horseshoe Bend	ID	48
85	50613	Cedar Falls	IA	47
86	50626	Dunkerton	IA	47
87	50634	Gilbertville	IA	47
88	66101	Kansas City	KS	46
89	66102	Kansas City	KS	46
90	66103	Kansas City	KS	46
91	11004	New York	NY	45
92	11005	New York	NY	45
93	11101	New York	NY	45
94	20001	Washington	DC	45
95	20002	Washington	DC	45
96	20003	Washington	DC	45
97	56001	Mankato	MN	45
98	56010	Amboy	MN	45
99	56024	Eagle Lake	MN	45
100	57706	Box Elder	SD	45

Methodology

This ranking is based on EPA Air Quality Index data. ZIP codes are ranked by median aqi, with a maximum of 3 ZIP codes per state to keep the ranking geographically diverse. Data is refreshed periodically. See our methodology page for full details on data sources and update frequency.

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