Most polluted cities in United States

693 measured cities ranked by PM2.5, last 30 days. Worst: Calexico at 23.0 µg/m³, #134 in the world.

#	City	µg/m³
1	Calexico California	23.0
2	Jurupa Valley California	12.9
3	Riverside California	12.3
4	Little Rock Arkansas	12.2
5	Hanford California	11.9
6	Oceanside California	11.8
7	Laredo Texas	11.4
8	Shreveport Louisiana	11.0
9	Wake Forest low-cost sensorsNorth Carolina	11.0
10	Corcoran California	11.0
11	Fontana California	11.0
12	West Memphis Arkansas	10.9
13	Clovis California	10.9
14	Wyoming Michigan	10.8
15	Fresno California	10.7
16	Dallas Texas	10.6
17	Los Angeles California	10.6
18	Lima Ohio	10.4
19	Macon Georgia	10.3
20	Middletown Ohio	10.3
21	Whittier California	10.3
22	Monroe Louisiana	10.2
23	Springdale Arkansas	10.1
24	Bartlett Tennessee	10.1
25	Granite City Illinois	9.8
26	Wheaton low-cost sensorsIllinois	9.8
27	Compton California	9.8
28	Brownsville Texas	9.7
29	San Diego California	9.7
30	Oklahoma City Oklahoma	9.6
31	Chattanooga Tennessee	9.6
32	Mission Texas	9.6
33	Richmond California	9.6
34	Tulare low-cost sensorsCalifornia	9.6
35	Edmond Oklahoma	9.5
36	Hawthorne low-cost sensorsCalifornia	9.5
37	Great Falls Montana	9.5
38	Tulsa Oklahoma	9.4
39	Glendora California	9.4
40	Chula Vista California	9.3
41	Birmingham Alabama	9.2
42	Edinburg Texas	9.2
43	San Antonio Texas	9.2
44	Madera California	9.2
45	Odessa Texas	9.2
46	Austin Texas	9.1
47	Mission Viejo California	9.1
48	Corpus Christi Texas	9.0
49	Denton Texas	9.0
50	Pasadena Texas	9.0
51	Arroyo Grande California	9.0
52	Merced California	9.0
53	Norwood Ohio	8.9
54	Live Oak Texas	8.9
55	Carson low-cost sensorsCalifornia	8.9
56	Porterville California	8.9
57	Atlanta Georgia	8.8
58	Upper Alton Illinois	8.8
59	Jackson Tennessee	8.8
60	Fort Worth Texas	8.8
61	Bakersfield California	8.8
62	Santa Clarita California	8.8
63	Wichita Kansas	8.7
64	Louisville Kentucky	8.7
65	Bridgeview Illinois	8.7
66	Burbank California	8.7
67	Valley Station Kentucky	8.6
68	Moore Oklahoma	8.6
69	Nashville Tennessee	8.6
70	Agoura low-cost sensorsCalifornia	8.6
71	Montgomery Alabama	8.5
72	Indianapolis Indiana	8.5
73	Hernando Mississippi	8.5
74	Ponca City Oklahoma	8.5
75	Baytown Texas	8.5
76	Texarkana Texas	8.5
77	Lake Elsinore California	8.5
78	Santa Monica low-cost sensorsCalifornia	8.5
79	Evansville Indiana	8.4
80	Cincinnati Ohio	8.4
81	Portsmouth Ohio	8.4
82	Spartanburg South Carolina	8.4
83	Blue Island low-cost sensorsIllinois	8.4
84	El Cajon California	8.4
85	East Saint Louis Illinois	8.3
86	Calumet City Illinois	8.3
87	Franklin Park Illinois	8.3
88	Oak Lawn Illinois	8.3
89	Anaheim California	8.3
90	Inglewood low-cost sensorsCalifornia	8.3
91	El Paso Texas	8.3
92	Decatur Alabama	8.2
93	Houston Texas	8.2
94	Poway California	8.2
95	Huntsville Alabama	8.1
96	Terre Haute Indiana	8.1
97	St. Louis Missouri	8.1
98	Knoxville Tennessee	8.1
99	Evergreen Park low-cost sensorsIllinois	8.1
100	Skokie low-cost sensorsIllinois	8.1
101	Long Beach California	8.1
102	Jasper Indiana	8.0
103	Jeffersonville Indiana	8.0
104	Derby Kansas	8.0
105	Kansas City Kansas	8.0
106	Lawton Oklahoma	8.0
107	Niles low-cost sensorsIllinois	8.0
108	Orcutt California	8.0
109	San Jose California	8.0
110	Gadsden Alabama	7.9
111	New Albany Indiana	7.9
112	Topeka Kansas	7.9
113	Jenks Oklahoma	7.9
114	Saint Andrews South Carolina	7.9
115	Naperville Illinois	7.9
116	Park Ridge low-cost sensorsIllinois	7.9
117	Lomita low-cost sensorsCalifornia	7.9
118	Salinas California	7.9
119	Turlock California	7.9
120	Athens Georgia	7.8
121	Olathe Kansas	7.8
122	Saint Matthews Kentucky	7.8
123	Charlotte North Carolina	7.8
124	Cedar Park Texas	7.8
125	Candler-McAfee Georgia	7.8
126	Tallahassee Florida	7.7
127	Lemay Missouri	7.7
128	Columbus Ohio	7.7
129	Conroe Texas	7.7
130	Brookfield Illinois	7.7
131	Peoria Illinois	7.7
132	Muncie Indiana	7.7
133	Manteca California	7.7
134	Augusta Georgia	7.6
135	Valdosta Georgia	7.6
136	Decatur Illinois	7.6
137	Hattiesburg Mississippi	7.6
138	McAlester Oklahoma	7.6
139	Hendersonville Tennessee	7.6
140	Deer Park Texas	7.6
141	Saginaw Texas	7.6
142	Hobbs New Mexico	7.6
143	Lewiston Idaho	7.6
144	Kendale Lakes Florida	7.5
145	Warner Robins Georgia	7.5
146	Owensboro Kentucky	7.5
147	Baton Rouge Louisiana	7.5
148	Winston-Salem North Carolina	7.5
149	College Station Texas	7.5
150	Evanston low-cost sensorsIllinois	7.5
151	Westerville Ohio	7.5
152	San Leandro California	7.5
153	Torrance low-cost sensorsCalifornia	7.5
154	Asheville North Carolina	7.4
155	Dolton Illinois	7.4
156	Buffalo New York	7.4
157	Cleveland Ohio	7.4
158	Socorro Texas	7.4
159	Dyersburg Tennessee	7.3
160	Belton Texas	7.3
161	Corsicana Texas	7.3
162	Perrysburg Ohio	7.3
163	Oconomowoc low-cost sensorsWisconsin	7.3
164	Pasadena low-cost sensorsCalifornia	7.3
165	Lawrence low-cost sensorsKansas	7.2
166	Jeffersontown Kentucky	7.2
167	Clemmons North Carolina	7.2
168	Fayetteville North Carolina	7.2
169	Morrisville North Carolina	7.2
170	North Charleston South Carolina	7.2
171	Clarksville Tennessee	7.2
172	Santa Cruz California	7.2
173	Yuba City California	7.2
174	Bessemer Alabama	7.1
175	Ferry Pass Florida	7.1
176	Elizabethtown Kentucky	7.1
177	Dayton Ohio	7.1
178	Michigan City Indiana	7.1
179	Ann Arbor low-cost sensorsMichigan	7.1
180	Midway Florida	7.1
181	Columbus Georgia	7.0
182	Columbia low-cost sensorsMissouri	7.0
183	Lexington North Carolina	7.0
184	Maryville Tennessee	7.0
185	Missouri City Texas	7.0
186	Chicago Illinois	7.0
187	Fort Wayne Indiana	7.0
188	Kalamazoo Michigan	7.0
189	Toledo Ohio	7.0
190	Warren Ohio	7.0
191	Elk Grove low-cost sensorsCalifornia	7.0
192	South Lake Tahoe California	7.0
193	Victorville California	7.0
194	Sunnyside Washington	7.0
195	La Crescenta-Montrose low-cost sensorsCalifornia	7.0
196	Paducah Kentucky	6.9
197	Bloomington Indiana	6.9
198	New Orleans Louisiana	6.9
199	Jackson Mississippi	6.9
200	Champaign Illinois	6.9
201	Elgin Illinois	6.9
202	Portage Indiana	6.9
203	Lincoln Nebraska	6.9
204	Oregon Ohio	6.9
205	Livermore California	6.9
206	Nipomo California	6.9
207	Amarillo Texas	6.9
208	Kansas City Missouri	6.8
209	Roanoke Rapids North Carolina	6.8
210	Springfield Ohio	6.8
211	Charleston West Virginia	6.8
212	Canton Ohio	6.8
213	Brawley California	6.8
214	Prunedale low-cost sensorsCalifornia	6.8
215	Redwood City California	6.8
216	San Francisco California	6.8
217	Prichard Alabama	6.7
218	Ocala Florida	6.7
219	Ponte Vedra Beach Florida	6.7
220	Springfield Illinois	6.7
221	Chalmette Louisiana	6.7
222	University City Missouri	6.7
223	Mission Bend Texas	6.7
224	Chesapeake Virginia	6.7
225	Waterloo Iowa	6.7
226	Elkhart Indiana	6.7
227	Delano low-cost sensorsCalifornia	6.7
228	Simi Valley California	6.7
229	Stockton California	6.7
230	Savannah Georgia	6.6
231	Lexington-Fayette Kentucky	6.6
232	Gulfport Mississippi	6.6
233	Greensboro North Carolina	6.6
234	Columbia Tennessee	6.6
235	Bloomington Illinois	6.6
236	Northbrook Illinois	6.6
237	Dearborn Michigan	6.6
238	Flint Michigan	6.6
239	West Mifflin Pennsylvania	6.6
240	Fillmore California	6.6
241	Banning California	6.6
242	Davis California	6.6
243	Gainesville Georgia	6.5
244	Springfield Missouri	6.5
245	Hickory North Carolina	6.5
246	Pennsauken New Jersey	6.5
247	Anderson Indiana	6.5
248	Hammond Indiana	6.5
249	Lancaster Pennsylvania	6.5
250	Pittsburgh Pennsylvania	6.5
251	Berkeley California	6.5
252	Oxnard California	6.5
253	Thousand Oaks California	6.5
254	Nampa Idaho	6.5
255	Gresham Oregon	6.5
256	Millcreek Utah	6.5
257	Renton Washington	6.5
258	Arden-Arcade California	6.5
259	Lawrenceville Georgia	6.4
260	Leawood Kansas	6.4
261	Nicholasville Kentucky	6.4
262	Kenner Louisiana	6.4
263	Arnold Missouri	6.4
264	Clayton North Carolina	6.4
265	Camden low-cost sensorsNew Jersey	6.4
266	Cookeville Tennessee	6.4
267	Bristol Virginia	6.4
268	Aurora Illinois	6.4
269	Elmwood Park Illinois	6.4
270	Rockford Illinois	6.4
271	Kokomo Indiana	6.4
272	Lincoln California	6.4
273	Temecula California	6.4
274	Vallejo California	6.4
275	Bonita Springs Florida	6.3
276	Ashland Kentucky	6.3
277	Fort Thomas Kentucky	6.3
278	Greenville South Carolina	6.3
279	Joliet Illinois	6.3
280	Gary Indiana	6.3
281	South Bend Indiana	6.3
282	Lansing Michigan	6.3
283	Maplewood low-cost sensorsMinnesota	6.3
284	Venice Florida	6.2
285	Harrisonburg Virginia	6.2
286	Hopewell Virginia	6.2
287	Grand Rapids Michigan	6.2
288	Jenison Michigan	6.2
289	Elizabeth New Jersey	6.2
290	Harrisburg Pennsylvania	6.2
291	Galt California	6.2
292	Lubbock Texas	6.2
293	Columbia City Washington	6.2
294	Tacoma Washington	6.2
295	York Pennsylvania	6.1
296	Galveston Texas	6.1
297	Salem Virginia	6.1
298	Clinton Iowa	6.1
299	Detroit Michigan	6.1
300	Steubenville Ohio	6.1
301	McKeesport Pennsylvania	6.1
302	Tigard Oregon	6.1
303	Vancouver Washington	6.1
304	Miami Florida	6.0
305	Saint Joseph Missouri	6.0
306	Durham North Carolina	6.0
307	East Hampton Virginia	6.0
308	Cedar Rapids Iowa	6.0
309	Iowa City Iowa	6.0
310	East Chicago Indiana	6.0
311	Medina Ohio	6.0
312	Wilkinsburg Pennsylvania	6.0
313	Waukesha Wisconsin	6.0
314	Concord California	6.0
315	Florin low-cost sensorsCalifornia	6.0
316	Huntington Beach low-cost sensorsCalifornia	6.0
317	Roseville California	6.0
318	Redding California	6.0
319	Seattle Washington	6.0
320	Wenatchee Washington	6.0
321	Raleigh North Carolina	5.9
322	Ankeny Iowa	5.9
323	Bay City Michigan	5.9
324	Lincoln Park Michigan	5.9
325	Youngstown Ohio	5.9
326	Bensalem Pennsylvania	5.9
327	Reno Nevada	5.9
328	West Valley City Utah	5.9
329	Washington District of Columbia	5.8
330	Fort Lauderdale Florida	5.8
331	Valrico Florida	5.8
332	West Pensacola Florida	5.8
333	Albany Georgia	5.8
334	Sulphur Louisiana	5.8
335	Lebanon Ohio	5.8
336	Mason Ohio	5.8
337	El Centro California	5.8
338	Oakland California	5.8
339	Lafayette Louisiana	5.7
340	Pascagoula Mississippi	5.7
341	Chambersburg Pennsylvania	5.7
342	Philadelphia Pennsylvania	5.7
343	Roanoke Virginia	5.7
344	Davenport Iowa	5.7
345	Moline Illinois	5.7
346	Ypsilanti Michigan	5.7
347	Akron Ohio	5.7
348	Johnstown Pennsylvania	5.7
349	South San Francisco low-cost sensorsCalifornia	5.7
350	West Jordan Utah	5.7
351	Baltimore Maryland	5.6
352	Raymore Missouri	5.6
353	Kingsport Tennessee	5.6
354	Richmond Virginia	5.6
355	Short Pump Virginia	5.6
356	Abington low-cost sensorsPennsylvania	5.6
357	South Milwaukee Wisconsin	5.6
358	Weirton West Virginia	5.6
359	Nogales Arizona	5.6
360	Yuma Arizona	5.6
361	Gilroy California	5.6
362	Sacramento California	5.6
363	Seaside low-cost sensorsCalifornia	5.6
364	Auburn Washington	5.6
365	Bellingham Washington	5.6
366	Fairhope Alabama	5.5
367	Fort Smith Arkansas	5.5
368	Dover Delaware	5.5
369	Toms River New Jersey	5.5
370	Cleveland Heights Ohio	5.5
371	Fort Dodge Iowa	5.5
372	Cary Illinois	5.5
373	Des Plaines Illinois	5.5
374	Taylor Michigan	5.5
375	Jersey City New Jersey	5.5
376	Linden New Jersey	5.5
377	Dublin Ohio	5.5
378	Shaker Heights Ohio	5.5
379	Upper Saint Clair Pennsylvania	5.5
380	Green Bay Wisconsin	5.5
381	Tucson Arizona	5.5
382	Sunland Park New Mexico	5.5
383	Meridian Idaho	5.5
384	Kent Washington	5.5
385	Pleasantville New Jersey	5.4
386	Charlottesville Virginia	5.4
387	Gahanna Ohio	5.4
388	Lebanon Pennsylvania	5.4
389	Coeur d'Alene Idaho	5.4
390	Brunswick Georgia	5.3
391	McDonough Georgia	5.3
392	White Oak Ohio	5.3
393	Muscatine Iowa	5.3
394	Minneapolis Minnesota	5.3
395	Omaha Nebraska	5.3
396	Ewing New Jersey	5.3
397	Scranton Pennsylvania	5.3
398	Ukiah California	5.3
399	The Dalles Oregon	5.3
400	Salt Lake City Utah	5.3
401	Spanish Fork Utah	5.3
402	Bremerton Washington	5.3
403	Jacksonville Florida	5.2
404	Fishers Indiana	5.2
405	La Porte Texas	5.2
406	Springfield Virginia	5.2
407	Lafayette Indiana	5.2
408	Port Huron Michigan	5.2
409	Mankato Minnesota	5.2
410	Rochester Minnesota	5.2
411	Trenton New Jersey	5.2
412	Painesville Ohio	5.2
413	Pawtucket Rhode Island	5.2
414	Weirton Heights West Virginia	5.2
415	Paradise California	5.2
416	Truckee California	5.2
417	Watsonville low-cost sensorsCalifornia	5.2
418	Tooele Utah	5.2
419	Sheridan Wyoming	5.2
420	Pompano Beach Florida	5.1
421	Scaggsville Maryland	5.1
422	Liberty Missouri	5.1
423	Greenville North Carolina	5.1
424	Ashburn Virginia	5.1
425	Des Moines Iowa	5.1
426	Southfield Michigan	5.1
427	Newark New Jersey	5.1
428	Hermitage Pennsylvania	5.1
429	Eau Claire Wisconsin	5.1
430	Tempe Arizona	5.1
431	Modesto California	5.1
432	Windsor low-cost sensorsCalifornia	5.1
433	Bountiful Utah	5.1
434	Moses Lake Washington	5.1
435	Pullman Washington	5.1
436	Columbus Indiana	5.0
437	Bayonne New Jersey	5.0
438	Sioux Falls South Dakota	5.0
439	Tracy California	5.0
440	Northglenn low-cost sensorsColorado	5.0
441	Thornton Colorado	5.0
442	Brigham City Utah	5.0
443	Magna Utah	5.0
444	Wilmington Delaware	4.9
445	Gainesville Florida	4.9
446	Paterson New Jersey	4.9
447	New York City New York	4.9
448	Chico California	4.9
449	Los Banos low-cost sensorsCalifornia	4.9
450	Ridgecrest California	4.9
451	Billings Montana	4.9
452	Hermiston Oregon	4.9
453	Ellensburg Washington	4.9
454	Shoreline Washington	4.9
455	Yakima Washington	4.9
456	Badger Alaska	4.9
457	Bear Delaware	4.8
458	Bartow Florida	4.8
459	Oak Ridge Florida	4.8
460	South Laurel Maryland	4.8
461	Zion Illinois	4.8
462	Blaine Minnesota	4.8
463	Burnsville Minnesota	4.8
464	Rochester New York	4.8
465	State College Pennsylvania	4.8
466	Madison Wisconsin	4.8
467	Superior Wisconsin	4.8
468	Flagstaff Arizona	4.8
469	Phoenix Arizona	4.8
470	Atascadero California	4.8
471	Westminster low-cost sensorsColorado	4.8
472	Cedar City Utah	4.8
473	Greeley Colorado	4.8
474	Canby Oregon	4.8
475	Marysville Washington	4.8
476	Port Angeles Washington	4.8
477	Four Corners Florida	4.8
478	Delray Beach Florida	4.7
479	Hunt Valley Maryland	4.7
480	Rose Hill Virginia	4.7
481	Brockton Massachusetts	4.7
482	Redford Michigan	4.7
483	Saint Paul Minnesota	4.7
484	Rutland Vermont	4.7
485	Indio California	4.7
486	San Rafael California	4.7
487	Pocatello Idaho	4.7
488	Herriman Utah	4.7
489	Spokane Valley Washington	4.7
490	Randolph New Jersey	4.7
491	Coconut Creek Florida	4.6
492	Deerfield Beach Florida	4.6
493	Springfield Massachusetts	4.6
494	Eastpointe Michigan	4.6
495	Saint Michael Minnesota	4.6
496	Shakopee Minnesota	4.6
497	Erie Pennsylvania	4.6
498	Hollister California	4.6
499	Rapid City South Dakota	4.6
500	Orem Utah	4.6
501	Burien Washington	4.6
502	Spokane Washington	4.6
503	Walla Walla Washington	4.6
504	Palm City Florida	4.5
505	Edgewood Maryland	4.5
506	Elkton Maryland	4.5
507	Hagerstown Maryland	4.5
508	Atlantic City New Jersey	4.5
509	Portland Maine	4.5
510	Apple Valley Minnesota	4.5
511	Saint Cloud Minnesota	4.5
512	Allentown Pennsylvania	4.5
513	Reading Pennsylvania	4.5
514	Spanish Springs Nevada	4.5
515	Fort Collins Colorado	4.5
516	Bozeman Montana	4.5
517	Portland Oregon	4.5
518	Salem Oregon	4.5
519	Centralia Washington	4.5
520	Longview Washington	4.5
521	Newark Delaware	4.4
522	Daytona Beach Florida	4.4
523	Lake Mary Florida	4.4
524	St. Petersburg Florida	4.4
525	Tampa Florida	4.4
526	New Haven Connecticut	4.4
527	Waterbury Connecticut	4.4
528	Syracuse New York	4.4
529	Carlisle Pennsylvania	4.4
530	Appleton Wisconsin	4.4
531	Glendale Arizona	4.4
532	Goleta low-cost sensorsCalifornia	4.4
533	Lancaster California	4.4
534	Twin Falls Idaho	4.4
535	Eugene Oregon	4.4
536	Parkland Washington	4.4
537	Salmon Creek Washington	4.4
538	Davie Florida	4.3
539	Wellington Florida	4.3
540	Chester Pennsylvania	4.3
541	Hartford Connecticut	4.3
542	Boston Massachusetts	4.3
543	Fort Lee New Jersey	4.3
544	Bethlehem Pennsylvania	4.3
545	Casa Grande Arizona	4.3
546	Las Cruces New Mexico	4.3
547	Longmont Colorado	4.3
548	Albany Oregon	4.3
549	Altamont Oregon	4.3
550	Beaverton Oregon	4.3
551	Forest Grove Oregon	4.3
552	Aberdeen Washington	4.3
553	Lacey Washington	4.3
554	Kahului Hawaii	4.3
555	Belle Glade Florida	4.2
556	Orlando Florida	4.2
557	Fall River Massachusetts	4.2
558	Quincy Massachusetts	4.2
559	Augusta Maine	4.2
560	New Brunswick New Jersey	4.2
561	Bridgeport Connecticut	4.2
562	Mesa Arizona	4.2
563	Payson Arizona	4.2
564	Folsom California	4.2
565	Santa Rosa California	4.2
566	Denver Colorado	4.2
567	North Ogden Utah	4.2
568	Bellevue Washington	4.2
569	Kennewick Washington	4.2
570	Pasco Washington	4.2
571	Fort Myers Florida	4.1
572	South Vineland New Jersey	4.1
573	Danbury Connecticut	4.1
574	Lowell Massachusetts	4.1
575	Duluth Minnesota	4.1
576	Bellevue Nebraska	4.1
577	Portsmouth New Hampshire	4.1
578	Burlington Vermont	4.1
579	Brookfield low-cost sensorsWisconsin	4.1
580	Colorado Springs Colorado	4.1
581	Hillsboro Oregon	4.1
582	Safety Harbor Florida	4.0
583	Winter Park Florida	4.0
584	Marquette Michigan	4.0
585	Keene New Hampshire	4.0
586	Albany New York	4.0
587	Holbrook New York	4.0
588	Norristown Pennsylvania	4.0
589	Casas Adobes Arizona	4.0
590	Palo Alto low-cost sensorsCalifornia	4.0
591	Windsor Colorado	4.0
592	Moscow Idaho	4.0
593	Ashland Oregon	4.0
594	Bend Oregon	4.0
595	Pendleton Oregon	4.0
596	Tri-Cities Washington	4.0
597	Greenfield Massachusetts	3.9
598	Lynn Massachusetts	3.9
599	Milford Massachusetts	3.9
600	Derry New Hampshire	3.9
601	Watertown South Dakota	3.9
602	Pueblo Colorado	3.9
603	Rio Rancho New Mexico	3.9
604	Las Vegas Nevada	3.9
605	Apache Junction Arizona	3.9
606	Woodburn Oregon	3.9
607	Kīhei Hawaii	3.9
608	Honolulu Hawaii	3.9
609	East Lake Florida	3.8
610	Sarasota Florida	3.8
611	Sewell New Jersey	3.8
612	Pittsfield Massachusetts	3.8
613	Altoona Pennsylvania	3.8
614	Albuquerque New Mexico	3.8
615	Bismarck North Dakota	3.8
616	McMinnville Oregon	3.8
617	Medford Oregon	3.8
618	Picnic Point-North Lynnwood Washington	3.8
619	Palm Bay Florida	3.7
620	West Fargo North Dakota	3.7
621	La Vista Nebraska	3.7
622	Boise Idaho	3.7
623	Coos Bay Oregon	3.7
624	Mount Vernon Washington	3.7
625	Anchorage Alaska	3.7
626	Framingham Massachusetts	3.6
627	Haverhill Massachusetts	3.6
628	Worcester Massachusetts	3.6
629	Lompoc California	3.6
630	South Valley New Mexico	3.6
631	New London Connecticut	3.5
632	Lewiston Maine	3.5
633	Marana Arizona	3.5
634	Carson City Nevada	3.5
635	Hurricane Utah	3.5
636	Idaho Falls Idaho	3.5
637	Butte Montana	3.5
638	Helena Montana	3.5
639	Grants Pass Oregon	3.5
640	Milwaukie Oregon	3.5
641	Oxon Hill-Glassmanor Maryland	3.5
642	Arvada low-cost sensorsColorado	3.4
643	Enterprise Nevada	3.4
644	Dallas Oregon	3.4
645	Oregon City Oregon	3.4
646	Monroe low-cost sensorsWashington	3.4
647	Hilo Hawaii	3.4
648	North Chicopee Massachusetts	3.3
649	Bangor Maine	3.3
650	Utica New York	3.3
651	Henderson Nevada	3.3
652	Spring Valley Nevada	3.3
653	Inglewood-Finn Hill low-cost sensorsWashington	3.3
654	Providence Rhode Island	3.2
655	Encinitas low-cost sensorsCalifornia	3.2
656	Vacaville California	3.2
657	Boulder Colorado	3.2
658	Redmond Oregon	3.2
659	Roseburg Oregon	3.2
660	Bothell low-cost sensorsWashington	3.2
661	Ken Caryl Colorado	3.1
662	Corvallis Oregon	3.1
663	Brookings South Dakota	3.0
664	Green Valley Arizona	3.0
665	Cañon City Colorado	3.0
666	Anacortes Washington	3.0
667	Casper Wyoming	3.0
668	Summerlin South Nevada	3.0
669	Golden low-cost sensorsColorado	2.9
670	Boulder City Nevada	2.9
671	Mesquite Nevada	2.9
672	Littleton Colorado	2.8
673	Missoula Montana	2.8
674	Kirkland low-cost sensorsWashington	2.8
675	North Creek low-cost sensorsWashington	2.7
676	Union Hill-Novelty Hill low-cost sensorsWashington	2.7
677	Laconia New Hampshire	2.6
678	Middleton low-cost sensorsWisconsin	2.6
679	Gillette Wyoming	2.6
680	Fairbanks Alaska	2.6
681	Cheyenne Wyoming	2.4
682	New City New York	2.3
683	Newburgh New York	2.3
684	Rockville Maryland	2.2
685	Aberdeen South Dakota	2.2
686	White Plains New York	2.1
687	Lakewood low-cost sensorsColorado	2.0
688	Laramie Wyoming	1.9
689	Lexington low-cost sensorsMassachusetts	1.6
690	Coventry Rhode Island	1.4
691	Parker low-cost sensorsColorado	0.6
692	Logan low-cost sensorsUtah	0.6
693	Oro Valley low-cost sensorsArizona	0.1

Good 0–9.0Moderate 9.1+Unhealthy for sensitive groups 35.5+Unhealthy 55.5+Very unhealthy 125.5+Hazardous 225.5+No data

Estimated: cities without a monitor

United States cities we can't measure, with model estimates for the last 7 days. Listed by population, not ranked: estimates aren't precise enough to rank. Model estimates from the Copernicus Atmosphere Monitoring Service (CAMS), adjusted to measured cities nearby where there are any. Adjusted, a single day lands within ×1.5 of what a monitor would read about two times in three; unadjusted, it can be off by half or double. Treat them as a guide, not a measurement.

City	7-day estimate	Band
Brooklyn estimated	≈ 4 µg/m³	Good
Queens estimated	≈ 4 µg/m³	Good
Manhattan estimated	≈ 4 µg/m³	Good
The Bronx estimated	≈ 4 µg/m³	Good
Memphis estimated	≈ 6 µg/m³	Good
Staten Island estimated	≈ 4 µg/m³	Good
Virginia Beach estimated	≈ 4 µg/m³	Good
Aurora estimated	≈ 5 µg/m³	Good
Lexington estimated	≈ 5 µg/m³	Good
Santa Ana estimated	≈ 8 µg/m³	Good
Meads estimated	≈ 5 µg/m³	Good
Plano estimated	≈ 9 µg/m³	Moderate
Chandler estimated	≈ 7 µg/m³	Good
Irvine estimated	≈ 8 µg/m³	Good
Gilbert estimated	≈ 4 µg/m³	Good
Norfolk estimated	≈ 4 µg/m³	Good
Hialeah estimated	≈ 6 µg/m³	Good
Garland estimated	≈ 10 µg/m³	Moderate
Scottsdale estimated	≈ 7 µg/m³	Good
Irving estimated	≈ 9 µg/m³	Moderate
North Las Vegas estimated	≈ 4 µg/m³	Good
Fremont estimated	≈ 9 µg/m³	Moderate
Paradise estimated	≈ 4 µg/m³	Good
San Bernardino estimated	≈ 9 µg/m³	Good
Arlington estimated	≈ 4 µg/m³	Good
Moreno Valley estimated	≈ 9 µg/m³	Good
Yonkers estimated	≈ 4 µg/m³	Good
Glendale estimated	≈ 12 µg/m³	Moderate
Cypress estimated	≈ 8 µg/m³	Good
Peoria estimated	≈ 7 µg/m³	Good
Sunrise Manor estimated	≈ 3 µg/m³	Good
Grand Prairie estimated	≈ 9 µg/m³	Moderate
Overland Park estimated	≈ 7 µg/m³	Good
Newport News estimated	≈ 4 µg/m³	Good
Mobile estimated	≈ 8 µg/m³	Good
Garden Grove estimated	≈ 8 µg/m³	Good
Rancho Cucamonga estimated	≈ 12 µg/m³	Moderate
Cape Coral estimated	≈ 5 µg/m³	Good
Pembroke Pines estimated	≈ 6 µg/m³	Good
Murfreesboro estimated	≈ 5 µg/m³	Good

Regions

Updated 2026-10-01 13:07 UTC. Values are PM2.5 in µg/m³ (fine particles), the median of each city's monitors.