Most polluted cities in United States

694 measured cities ranked by PM2.5, last 7 days. Worst: Calexico at 29.6 µg/m³, #80 in the world.

#	City	µg/m³
1	Calexico California	29.6
2	Richmond California	14.5
3	Jurupa Valley California	14.3
4	Clovis California	13.7
5	Riverside California	13.4
6	Los Angeles California	13.0
7	Hanford California	12.6
8	Fontana California	12.5
9	Dallas Texas	12.4
10	Fresno California	12.1
11	Whittier California	12.1
12	Shreveport Louisiana	11.9
13	Wyoming Michigan	11.9
14	Monroe Louisiana	11.6
15	Durant low-cost sensorsOklahoma	11.3
16	Hawthorne low-cost sensorsCalifornia	11.3
17	San Diego California	11.3
18	Little Rock Arkansas	11.2
19	Oklahoma City Oklahoma	11.1
20	Pasadena Texas	11.1
21	Compton California	11.1
22	Edmond Oklahoma	11.0
23	Corcoran California	11.0
24	Chula Vista California	10.9
25	Inglewood low-cost sensorsCalifornia	10.8
26	Carson low-cost sensorsCalifornia	10.7
27	Lima Ohio	10.5
28	Porterville California	10.5
29	Tulare low-cost sensorsCalifornia	10.5
30	Houston Texas	10.4
31	Santa Monica low-cost sensorsCalifornia	10.4
32	New Orleans Louisiana	10.3
33	Tulsa Oklahoma	10.3
34	Deer Park Texas	10.3
35	Glendora California	10.3
36	Baytown Texas	10.2
37	Great Falls Montana	10.2
38	Fort Worth Texas	10.1
39	Bakersfield California	10.1
40	Hattiesburg Mississippi	10.0
41	Austin Texas	10.0
42	Denton Texas	10.0
43	El Cajon California	10.0
44	Mission Viejo California	10.0
45	Madera California	9.9
46	Oceanside California	9.9
47	Bridgeview Illinois	9.8
48	Pasadena low-cost sensorsCalifornia	9.8
49	Valdosta Georgia	9.6
50	Terre Haute Indiana	9.6
51	Texarkana Texas	9.6
52	Burbank California	9.6
53	Merced California	9.6
54	Torrance low-cost sensorsCalifornia	9.6
55	Springdale Arkansas	9.5
56	Columbus Georgia	9.5
57	Baton Rouge Louisiana	9.5
58	College Station Texas	9.5
59	Anaheim California	9.5
60	San Jose California	9.5
61	Moore Oklahoma	9.3
62	Live Oak Texas	9.3
63	San Antonio Texas	9.3
64	Holland Michigan	9.3
65	Lomita low-cost sensorsCalifornia	9.3
66	Chalmette Louisiana	9.2
67	Gulfport Mississippi	9.2
68	Wichita Kansas	9.1
69	Kenner Louisiana	9.1
70	Wheaton low-cost sensorsIllinois	9.1
71	Buffalo New York	9.1
72	Poway California	9.1
73	Middletown Ohio	9.0
74	Laredo Texas	9.0
75	Lake Elsinore California	9.0
76	San Leandro California	9.0
77	Thousand Oaks California	9.0
78	Ferry Pass Florida	8.9
79	Ocala Florida	8.9
80	Tallahassee Florida	8.9
81	Indianapolis Indiana	8.9
82	Conroe Texas	8.9
83	Calumet City Illinois	8.9
84	Lawrence low-cost sensorsKansas	8.8
85	Lawton Oklahoma	8.8
86	Agoura low-cost sensorsCalifornia	8.8
87	Long Beach California	8.8
88	Missouri City Texas	8.7
89	Saginaw Texas	8.7
90	Turlock California	8.7
91	Badger Alaska	8.6
92	Sulphur Louisiana	8.5
93	Lemay Missouri	8.5
94	Belton Texas	8.5
95	Cedar Park Texas	8.5
96	Corpus Christi Texas	8.5
97	Manteca California	8.5
98	Ponca City Oklahoma	8.4
99	Huntington Beach low-cost sensorsCalifornia	8.4
100	Corsicana Texas	8.3
101	Galveston Texas	8.3
102	Brookfield Illinois	8.3
103	Kalamazoo Michigan	8.3
104	Salinas California	8.3
105	Vallejo California	8.3
106	Yuba City California	8.3
107	Ponte Vedra Beach Florida	8.2
108	Columbus Ohio	8.2
109	Blue Island low-cost sensorsIllinois	8.2
110	Toledo Ohio	8.2
111	Arroyo Grande California	8.2
112	San Francisco California	8.2
113	Derby Kansas	8.1
114	Jenks Oklahoma	8.1
115	Mission Bend Texas	8.1
116	Naperville Illinois	8.1
117	Redwood City California	8.1
118	Santa Cruz California	8.1
119	Macon Georgia	8.0
120	Lafayette Louisiana	8.0
121	McAlester Oklahoma	8.0
122	Oak Lawn Illinois	8.0
123	Birmingham Alabama	7.9
124	North Charleston South Carolina	7.9
125	Franklin Park Illinois	7.9
126	Arden-Arcade California	7.9
127	West Memphis Arkansas	7.8
128	Valrico Florida	7.8
129	Savannah Georgia	7.8
130	Mission Texas	7.8
131	Augusta Georgia	7.7
132	Valley Station Kentucky	7.7
133	Wake Forest low-cost sensorsNorth Carolina	7.7
134	Edinburg Texas	7.7
135	Evergreen Park low-cost sensorsIllinois	7.7
136	Niles low-cost sensorsIllinois	7.7
137	Fort Wayne Indiana	7.7
138	Elk Grove low-cost sensorsCalifornia	7.7
139	Livermore California	7.7
140	Oakland California	7.7
141	Norwood Ohio	7.6
142	Waterloo Iowa	7.6
143	Skokie low-cost sensorsIllinois	7.6
144	Elkhart Indiana	7.6
145	Brawley California	7.6
146	Orcutt California	7.6
147	Santa Clarita California	7.6
148	Stockton California	7.6
149	Midway Florida	7.6
150	Kansas City Kansas	7.5
151	Pascagoula Mississippi	7.5
152	Park Ridge low-cost sensorsIllinois	7.5
153	Maplewood low-cost sensorsMinnesota	7.5
154	Prunedale low-cost sensorsCalifornia	7.5
155	El Paso Texas	7.5
156	Lewiston Idaho	7.5
157	Venice Florida	7.4
158	Cleveland Ohio	7.4
159	West Pensacola Florida	7.3
160	Warren Ohio	7.3
161	Jeffersonville Indiana	7.2
162	La Porte Texas	7.2
163	Waukesha Wisconsin	7.2
164	Jacksonville Florida	7.1
165	Olathe Kansas	7.1
166	Asheville North Carolina	7.1
167	Kokomo Indiana	7.1
168	Oconomowoc low-cost sensorsWisconsin	7.1
169	Gilroy California	7.1
170	Fort Smith Arkansas	7.0
171	Albany Georgia	7.0
172	Brunswick Georgia	7.0
173	St. Louis Missouri	7.0
174	Jackson Mississippi	7.0
175	Conway South Carolina	7.0
176	Chicago Illinois	7.0
177	Kendale Lakes Florida	6.9
178	New Albany Indiana	6.9
179	Topeka Kansas	6.9
180	Bay City Michigan	6.9
181	Concord California	6.9
182	Temecula California	6.9
183	Davenport Iowa	6.8
184	Muncie Indiana	6.8
185	Dearborn Michigan	6.8
186	Flint Michigan	6.8
187	Lansing Michigan	6.8
188	Oregon Ohio	6.8
189	Galt California	6.8
190	South Lake Tahoe California	6.8
191	Odessa Texas	6.8
192	Warner Robins Georgia	6.7
193	Springfield Missouri	6.7
194	Cincinnati Ohio	6.7
195	Aurora Illinois	6.7
196	Elgin Illinois	6.7
197	Evanston low-cost sensorsIllinois	6.7
198	Davis California	6.7
199	Delano low-cost sensorsCalifornia	6.7
200	Sacramento California	6.7
201	Millcreek Utah	6.7
202	Bonita Springs Florida	6.6
203	Lafayette Indiana	6.6
204	Grand Rapids Michigan	6.6
205	South Milwaukee Wisconsin	6.6
206	The Dalles Oregon	6.6
207	Montgomery Alabama	6.5
208	Louisville Kentucky	6.5
209	Charleston West Virginia	6.5
210	Michigan City Indiana	6.5
211	San Rafael California	6.5
212	Simi Valley California	6.5
213	South San Francisco low-cost sensorsCalifornia	6.5
214	Cedar Rapids Iowa	6.4
215	Hammond Indiana	6.4
216	Portage Indiana	6.4
217	Jenison Michigan	6.4
218	Perrysburg Ohio	6.4
219	Green Bay Wisconsin	6.4
220	Banning California	6.4
221	Nipomo California	6.4
222	Roseville California	6.4
223	Victorville California	6.4
224	Nampa Idaho	6.4
225	Fairhope Alabama	6.3
226	East Saint Louis Illinois	6.3
227	Muscatine Iowa	6.3
228	Peoria Illinois	6.3
229	South Bend Indiana	6.3
230	Westerville Ohio	6.3
231	Youngstown Ohio	6.3
232	Florin low-cost sensorsCalifornia	6.3
233	Seaside low-cost sensorsCalifornia	6.3
234	Bartow Florida	6.2
235	Atlanta Georgia	6.2
236	Bartlett Tennessee	6.2
237	Dolton Illinois	6.2
238	Elmwood Park Illinois	6.2
239	Detroit Michigan	6.2
240	Canton Ohio	6.2
241	Fillmore California	6.2
242	Nogales Arizona	6.2
243	Kahului Hawaii	6.2
244	Columbia low-cost sensorsMissouri	6.1
245	Live Oak low-cost sensorsCalifornia	6.1
246	Oxnard California	6.1
247	Watsonville low-cost sensorsCalifornia	6.1
248	Columbia City Washington	6.1
249	La Crescenta-Montrose low-cost sensorsCalifornia	6.1
250	Oak Ridge Florida	6.0
251	Dayton Ohio	6.0
252	Portsmouth Ohio	6.0
253	Clinton Iowa	6.0
254	Rockford Illinois	6.0
255	Minneapolis Minnesota	6.0
256	Lincoln California	6.0
257	West Valley City Utah	6.0
258	St. Petersburg Florida	5.9
259	Ypsilanti Michigan	5.9
260	Rochester Minnesota	5.9
261	Flagstaff Arizona	5.9
262	Meridian Idaho	5.9
263	Four Corners Florida	5.9
264	Bessemer Alabama	5.8
265	Tampa Florida	5.8
266	Arnold Missouri	5.8
267	White Oak Ohio	5.8
268	Chattanooga Tennessee	5.8
269	Gary Indiana	5.8
270	Lincoln Park Michigan	5.8
271	Redford Michigan	5.8
272	Hollister California	5.8
273	Bozeman Montana	5.8
274	Sunnyside Washington	5.8
275	Lake Mary Florida	5.7
276	Saint Joseph Missouri	5.7
277	Iowa City Iowa	5.7
278	Steubenville Ohio	5.7
279	Los Banos low-cost sensorsCalifornia	5.7
280	Ukiah California	5.7
281	Gresham Oregon	5.7
282	Gainesville Florida	5.6
283	Fayetteville North Carolina	5.6
284	Saint Andrews South Carolina	5.6
285	Ankeny Iowa	5.6
286	Joliet Illinois	5.6
287	Moline Illinois	5.6
288	Omaha Nebraska	5.6
289	Akron Ohio	5.6
290	Madison Wisconsin	5.6
291	El Centro California	5.6
292	Tracy California	5.6
293	Socorro Texas	5.6
294	Tacoma Washington	5.6
295	Miami Florida	5.5
296	Athens Georgia	5.5
297	Decatur Illinois	5.5
298	Upper Alton Illinois	5.5
299	Fishers Indiana	5.5
300	Owensboro Kentucky	5.5
301	Lebanon Ohio	5.5
302	Mason Ohio	5.5
303	Fort Dodge Iowa	5.5
304	Ann Arbor low-cost sensorsMichigan	5.5
305	Dublin Ohio	5.5
306	West Jordan Utah	5.5
307	Daytona Beach Florida	5.4
308	Granite City Illinois	5.4
309	Raymore Missouri	5.4
310	Hernando Mississippi	5.4
311	Springfield Ohio	5.4
312	Huntington West Virginia	5.4
313	East Chicago Indiana	5.4
314	Port Huron Michigan	5.4
315	Taylor Michigan	5.4
316	Saint Paul Minnesota	5.4
317	Pittsburgh Pennsylvania	5.4
318	Sioux Falls South Dakota	5.4
319	Sunland Park New Mexico	5.4
320	Salt Lake City Utah	5.4
321	Orlando Florida	5.3
322	Jasper Indiana	5.3
323	Leawood Kansas	5.3
324	Cary Illinois	5.3
325	Northbrook Illinois	5.3
326	Burnsville Minnesota	5.3
327	McKeesport Pennsylvania	5.3
328	Superior Wisconsin	5.3
329	Tucson Arizona	5.3
330	Hobbs New Mexico	5.3
331	Reno Nevada	5.3
332	Redding California	5.3
333	Coeur d'Alene Idaho	5.3
334	Highland Utah	5.3
335	Auburn Washington	5.3
336	Safety Harbor Florida	5.2
337	Bloomington Indiana	5.2
338	Evansville Indiana	5.2
339	Morrisville North Carolina	5.2
340	Toms River New Jersey	5.2
341	Chesapeake Virginia	5.2
342	Anderson Indiana	5.2
343	Blaine Minnesota	5.2
344	Medina Ohio	5.2
345	West Mifflin Pennsylvania	5.2
346	Atascadero California	5.2
347	Goleta low-cost sensorsCalifornia	5.2
348	Sheridan Wyoming	5.2
349	Huntsville Alabama	5.1
350	Lexington-Fayette Kentucky	5.1
351	Saint Matthews Kentucky	5.1
352	University City Missouri	5.1
353	Spartanburg South Carolina	5.1
354	Jackson Tennessee	5.1
355	Apple Valley Minnesota	5.1
356	Painesville Ohio	5.1
357	Appleton Wisconsin	5.1
358	Chico California	5.1
359	Amarillo Texas	5.1
360	Billings Montana	5.1
361	Bountiful Utah	5.1
362	Renton Washington	5.1
363	East Lake Florida	5.0
364	Fort Lauderdale Florida	5.0
365	Sarasota Florida	5.0
366	Elizabethtown Kentucky	5.0
367	Jeffersontown Kentucky	5.0
368	Charlotte North Carolina	5.0
369	Durham North Carolina	5.0
370	Saint Michael Minnesota	5.0
371	Bellevue Nebraska	5.0
372	Santa Rosa California	5.0
373	Windsor low-cost sensorsCalifornia	5.0
374	Rapid City South Dakota	5.0
375	Tooele Utah	5.0
376	Candler-McAfee Georgia	5.0
377	Ashland Kentucky	4.9
378	Roanoke Rapids North Carolina	4.9
379	Des Moines Iowa	4.9
380	Bloomington Illinois	4.9
381	Des Plaines Illinois	4.9
382	Southfield Michigan	4.9
383	Wilkinsburg Pennsylvania	4.9
384	Paradise California	4.9
385	Truckee California	4.9
386	Hurricane Utah	4.9
387	Twin Falls Idaho	4.9
388	Magna Utah	4.9
389	Spanish Fork Utah	4.9
390	Winter Park Florida	4.8
391	Springfield Illinois	4.8
392	East Hampton Virginia	4.8
393	Champaign Illinois	4.8
394	Eastpointe Michigan	4.8
395	Hermitage Pennsylvania	4.8
396	Weirton West Virginia	4.8
397	Tempe Arizona	4.8
398	Encinitas low-cost sensorsCalifornia	4.8
399	Indio California	4.8
400	Ridgecrest California	4.8
401	Lubbock Texas	4.8
402	Brigham City Utah	4.8
403	Bellingham Washington	4.8
404	Vancouver Washington	4.8
405	Kīhei Hawaii	4.8
406	Honolulu Hawaii	4.8
407	Fort Myers Florida	4.7
408	Palm City Florida	4.7
409	Fort Thomas Kentucky	4.7
410	Hunt Valley Maryland	4.7
411	Lexington North Carolina	4.7
412	Raleigh North Carolina	4.7
413	Pennsauken New Jersey	4.7
414	Knoxville Tennessee	4.7
415	Maryville Tennessee	4.7
416	Bristol Virginia	4.7
417	Mankato Minnesota	4.7
418	Syracuse New York	4.7
419	Gahanna Ohio	4.7
420	Burlington Vermont	4.7
421	Eau Claire Wisconsin	4.7
422	Westminster low-cost sensorsColorado	4.7
423	Tigard Oregon	4.7
424	Pullman Washington	4.7
425	Seattle Washington	4.7
426	Paducah Kentucky	4.6
427	Decatur Alabama	4.6
428	Pompano Beach Florida	4.6
429	Baltimore Maryland	4.6
430	Harrisonburg Virginia	4.6
431	Cleveland Heights Ohio	4.6
432	Zion Illinois	4.6
433	Quincy Massachusetts	4.6
434	Saint Cloud Minnesota	4.6
435	Rochester New York	4.6
436	Johnstown Pennsylvania	4.6
437	Scranton Pennsylvania	4.6
438	Upper Saint Clair Pennsylvania	4.6
439	Payson Arizona	4.6
440	Palo Alto low-cost sensorsCalifornia	4.6
441	Moscow Idaho	4.6
442	Orem Utah	4.6
443	Coconut Creek Florida	4.5
444	Clemmons North Carolina	4.5
445	Winston-Salem North Carolina	4.5
446	Erie Pennsylvania	4.5
447	Phoenix Arizona	4.5
448	Yuma Arizona	4.5
449	Lancaster California	4.5
450	Thornton Colorado	4.5
451	Fairbanks Alaska	4.5
452	Delray Beach Florida	4.4
453	Nicholasville Kentucky	4.4
454	Nashville Tennessee	4.4
455	Bensalem Pennsylvania	4.4
456	Weirton Heights West Virginia	4.4
457	Greeley Colorado	4.4
458	Pocatello Idaho	4.4
459	Kent Washington	4.4
460	Anchorage Alaska	4.4
461	Gadsden Alabama	4.3
462	Belle Glade Florida	4.3
463	Deerfield Beach Florida	4.3
464	Wellington Florida	4.3
465	Columbus Indiana	4.3
466	Liberty Missouri	4.3
467	York Pennsylvania	4.3
468	Grand Island Nebraska	4.3
469	Elizabeth New Jersey	4.3
470	Shaker Heights Ohio	4.3
471	Lancaster Pennsylvania	4.3
472	Cedar City Utah	4.3
473	McDonough Georgia	4.2
474	Fall River Massachusetts	4.2
475	Marquette Michigan	4.2
476	Duluth Minnesota	4.2
477	Folsom California	4.2
478	Spanish Springs Nevada	4.2
479	Fort Collins Colorado	4.2
480	Longmont Colorado	4.2
481	North Ogden Utah	4.2
482	Edgewood Maryland	4.1
483	Camden low-cost sensorsNew Jersey	4.1
484	Philadelphia Pennsylvania	4.1
485	Clarksville Tennessee	4.1
486	Richmond Virginia	4.1
487	Harrisburg Pennsylvania	4.1
488	Rutland Vermont	4.1
489	Northglenn low-cost sensorsColorado	4.1
490	Port Angeles Washington	4.1
491	Palm Bay Florida	4.0
492	Chambersburg Pennsylvania	4.0
493	Short Pump Virginia	4.0
494	Pawtucket Rhode Island	4.0
495	Lompoc California	4.0
496	Denver Colorado	4.0
497	Rio Rancho New Mexico	4.0
498	Herriman Utah	4.0
499	Bremerton Washington	4.0
500	Shoreline Washington	4.0
501	Washington District of Columbia	3.9
502	Davie Florida	3.9
503	Gainesville Georgia	3.9
504	Greensboro North Carolina	3.9
505	Dyersburg Tennessee	3.9
506	Springfield Virginia	3.9
507	La Vista Nebraska	3.9
508	Colorado Springs Colorado	3.9
509	Las Cruces New Mexico	3.9
510	Las Vegas Nevada	3.9
511	Butte Montana	3.9
512	Lacey Washington	3.9
513	Longview Washington	3.9
514	Marysville Washington	3.9
515	Parkland Washington	3.9
516	Spokane Valley Washington	3.9
517	Randolph New Jersey	3.9
518	Dover Delaware	3.8
519	Jersey City New Jersey	3.8
520	Linden New Jersey	3.8
521	Brookfield low-cost sensorsWisconsin	3.8
522	Apache Junction Arizona	3.8
523	Portland Oregon	3.8
524	Lawrenceville Georgia	3.7
525	Hickory North Carolina	3.7
526	Greenville South Carolina	3.7
527	Columbia Tennessee	3.7
528	Salem Virginia	3.7
529	Boston Massachusetts	3.7
530	Newark New Jersey	3.7
531	Fremont low-cost sensorsCalifornia	3.7
532	Idaho Falls Idaho	3.7
533	Bismarck North Dakota	3.7
534	Hermiston Oregon	3.7
535	Salem Oregon	3.7
536	Burien Washington	3.7
537	Centralia Washington	3.7
538	Bear Delaware	3.6
539	Hendersonville Tennessee	3.6
540	Kingsport Tennessee	3.6
541	Springfield Massachusetts	3.6
542	Mesa Arizona	3.6
543	Pueblo Colorado	3.6
544	Windsor Colorado	3.6
545	Helena Montana	3.6
546	Pendleton Oregon	3.6
547	Pleasantville New Jersey	3.5
548	Ashburn Virginia	3.5
549	Charlottesville Virginia	3.5
550	Roanoke Virginia	3.5
551	Rose Hill Virginia	3.5
552	Brockton Massachusetts	3.5
553	Portsmouth New Hampshire	3.5
554	New York City New York	3.5
555	Casas Adobes Arizona	3.5
556	Albuquerque New Mexico	3.5
557	Carson City Nevada	3.5
558	Missoula Montana	3.5
559	Albany Oregon	3.5
560	Coos Bay Oregon	3.5
561	Eugene Oregon	3.5
562	Wenatchee Washington	3.5
563	Picnic Point-North Lynnwood Washington	3.5
564	Wilmington Delaware	3.4
565	Lynn Massachusetts	3.4
566	Augusta Maine	3.4
567	Trenton New Jersey	3.4
568	Reading Pennsylvania	3.4
569	Brookings South Dakota	3.4
570	Glendale Arizona	3.4
571	Arvada low-cost sensorsColorado	3.4
572	Enterprise Nevada	3.4
573	Henderson Nevada	3.4
574	Ashland Oregon	3.4
575	Canby Oregon	3.4
576	Aberdeen Washington	3.4
577	Bellevue Washington	3.4
578	Salmon Creek Washington	3.4
579	Elkton Maryland	3.3
580	Hagerstown Maryland	3.3
581	Portland Maine	3.3
582	Keene New Hampshire	3.3
583	Abington low-cost sensorsPennsylvania	3.3
584	Lebanon Pennsylvania	3.3
585	State College Pennsylvania	3.3
586	Marana Arizona	3.3
587	Spring Valley Nevada	3.3
588	Boise Idaho	3.3
589	Altamont Oregon	3.3
590	Medford Oregon	3.3
591	Milwaukie Oregon	3.3
592	Spokane Washington	3.3
593	Walla Walla Washington	3.3
594	Yakima Washington	3.3
595	Hilo Hawaii	3.3
596	Lowell Massachusetts	3.2
597	Lewiston Maine	3.2
598	West Fargo North Dakota	3.2
599	Paterson New Jersey	3.2
600	Utica New York	3.2
601	Vacaville California	3.2
602	Forest Grove Oregon	3.2
603	Woodburn Oregon	3.2
604	Summerlin South Nevada	3.2
605	Tri-Cities Washington	3.2
606	Scaggsville Maryland	3.1
607	Atlantic City New Jersey	3.1
608	Cookeville Tennessee	3.1
609	Bangor Maine	3.1
610	Fort Lee New Jersey	3.1
611	Allentown Pennsylvania	3.1
612	Carlisle Pennsylvania	3.1
613	Aberdeen South Dakota	3.1
614	Littleton Colorado	3.1
615	Beaverton Oregon	3.1
616	Grants Pass Oregon	3.1
617	Bethlehem Pennsylvania	3.0
618	Sunnyvale low-cost sensorsCalifornia	3.0
619	Bend Oregon	3.0
620	Hillsboro Oregon	3.0
621	Roseburg Oregon	3.0
622	Pasco Washington	3.0
623	Newark Delaware	2.9
624	New Haven Connecticut	2.9
625	Waterbury Connecticut	2.9
626	Greenfield Massachusetts	2.9
627	Haverhill Massachusetts	2.9
628	Albany New York	2.9
629	Casa Grande Arizona	2.9
630	Boulder Colorado	2.9
631	Ellensburg Washington	2.9
632	Chester Pennsylvania	2.8
633	New Brunswick New Jersey	2.8
634	Norristown Pennsylvania	2.8
635	Green Valley Arizona	2.8
636	Ceres low-cost sensorsCalifornia	2.8
637	Mount Vernon Washington	2.8
638	Sewell New Jersey	2.7
639	Hartford Connecticut	2.7
640	Framingham Massachusetts	2.7
641	Providence Rhode Island	2.7
642	Mountain View low-cost sensorsCalifornia	2.7
643	Cañon City Colorado	2.7
644	Boulder City Nevada	2.7
645	Mesquite Nevada	2.7
646	Anacortes Washington	2.7
647	Casper Wyoming	2.7
648	Gillette Wyoming	2.7
649	South Vineland New Jersey	2.6
650	Milford Massachusetts	2.6
651	Worcester Massachusetts	2.6
652	Holbrook New York	2.6
653	Bridgeport Connecticut	2.6
654	Ken Caryl Colorado	2.6
655	McMinnville Oregon	2.6
656	Oregon City Oregon	2.6
657	Danbury Connecticut	2.5
658	Pittsfield Massachusetts	2.5
659	Watertown South Dakota	2.5
660	South Valley New Mexico	2.5
661	Kennewick Washington	2.5
662	North Chicopee Massachusetts	2.4
663	Derry New Hampshire	2.4
664	Rock Springs Wyoming	2.4
665	Oxon Hill-Glassmanor Maryland	2.4
666	New London Connecticut	2.3
667	Middleton low-cost sensorsWisconsin	2.2
668	Corvallis Oregon	2.2
669	Golden low-cost sensorsColorado	2.1
670	Redmond Oregon	2.1
671	Cheyenne Wyoming	2.1
672	Laramie Wyoming	2.1
673	Rockville Maryland	2.0
674	Lakewood low-cost sensorsColorado	2.0
675	South Laurel Maryland	1.9
676	Laconia New Hampshire	1.9
677	Dallas Oregon	1.9
678	Monroe low-cost sensorsWashington	1.9
679	Newburgh New York	1.8
680	San Mateo low-cost sensorsCalifornia	1.6
681	Inglewood-Finn Hill low-cost sensorsWashington	1.6
682	Bothell low-cost sensorsWashington	1.4
683	New City New York	1.3
684	White Plains New York	1.3
685	Coventry Rhode Island	1.3
686	Kirkland low-cost sensorsWashington	1.2
687	Union Hill-Novelty Hill low-cost sensorsWashington	1.2
688	Logan low-cost sensorsUtah	1.1
689	North Creek low-cost sensorsWashington	1.0
690	Lexington low-cost sensorsMassachusetts	0.3
691	Altoona Pennsylvania	0.3
692	Parker low-cost sensorsColorado	0.2
693	Newton low-cost sensorsMassachusetts	0.1
694	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

Regions

Updated 2026-10-01 04:07 UTC. Values are PM2.5 in µg/m³ (fine particles), the median of each city's monitors.