There are 179 stations on the map: May street (342) - MIAEH PurpleAir 7 (191) - Cvna1 (174) - Florales Drive (169) - Paramount - Site 1 - Vermont Ave (152) - Piedmont@I-5 (139) - FIU Purple Air 1 (138) - Rider U-04 (117) - FC1 P3-838 Mcgillivray (115) - BUF5226 (106) - Lake Gregory (Crestline), San Bernardino (101) - Morses Pond, Wellesley, MA (99) - Anderson Compound (98) - Doyle Sensor (90) - Parr, Arkansas (89) - Pine Hills 0 (86) - Newcomb at Phelps (85) - Alexander Mt. (84) - R6 ARPM Test (84) - Arnold Mills (location obscured) (82) - SASY1A (82) - Wylam, Alabama (82) - Honey (81) - 45th and Ashland (81) - Westwood - High Street (81) - ROCIS_ k3f3_O (80) - HSV Downtown (79) - Canterbury Dr (79) - AAH Glen Manor (79) - Lopez (78) - MLK-Houston (78) - Lisbon_2 (77) - Hunters Ridge (76) - Broad View Ave NE (75) - Shwab Elementary (72) - Circa37 (72) - Mpls-Loring Park (71) - Home (70) - Fresno - Drummond Street, Fresno, California (70) - Broadmoor (70) - Grantwood Village (70) - ONEOK Field (69) - City of St. Ann (69) - City of Minneapolis Community Air Monitoring Project 10 (69) - LOCHWOOD (69) - Northeast Colorado Springs (68) - Constellation Farmstead (68) - SE Bath (67) - North Highlands (67) - Lexington Farms (67) - Brookhill Estates (66) - Marion, Arkansas (65) - Friends and Allies (65) - Near Bauder (65) - ROCIS_e6w2_O (64) - Battle Ground vs (64) - Avondale (63) - Dolorosa (63) - Salinas #3, Monterey, California (63) - Westgate (63) - Heritage East (62) - Turner (62) - IMLS_SMV_Fan 1 (62) - CCA Butler and Wagner (60) - Mcmurray (60) - Xavier NCF building_MG (60) - UT-DrCs house (60) - NHDES_Collo_Pem5 (60) - Griffin Park (59) - Sunnyside (59) - Ascarate Park SE, El Paso, Texas (59) - Bridgetown Sanctuary (59) - Park House AC:86 (58) - Battle Creek Golf Course (58) - RN (58) - Cleveland Heights - Fire Station #2 (58) - Polk County Health Department Collocated (58) - I-40 @ Papermill Exit (58) - Campus Town (57) - Carriage Hills (57) - Shorewood East (57) - NW 22nd St (56) - PennFuture (55) - Edgewood - Scarsdale (55) - Forest Park, GA-Clayton Crescent (55) - Okemos-East (54) - Trinity St Marks, Michigan (54) - Fiori Hill (54) - LMCU Ballpark -1 (53) - CleanAirNow/Nebraska (53) - Glenpool, Oklahoma (52) - Waco Mazanec, Waco, Texas (52) - AMTS Bakersfield (52) - IUPUI-207 (52) - Central Omaha, Nebraska (52) - Peck, Kansas (52) - Bayside, WI (51) - ROCIS_FLEX_EAD_O (51) - Cabezon--Rio Rancho South (50) - Pflugerville Library (50) - Hampton Univ-CBBT (50) - Edgepark (49) - Hudson Hill Monitor #1 (48) - Dona Park, Corpus Christi, Texas (48) - Lake Ontario Shoreline (48) - TracFlex1 (48) - The Victor Cove (48) - Lapalco (48) - Hawk Island (48) - North Phoenix, Maricopa (47) - MSIC2 (47) - FAFE Manor (47) - Mount Vernon (47) - Baton Rouge Capitol site, Louisiana (47) - Schenectady, NY (47) - SURFRAD_SXF (46) - LCSD-Dayton (46) - Lake Forest HOA #2 (46) - Queen Anne (46) - Overlea (45) - mowhawk valley (45) - Bricks (44) - SR32 (43) - Springfield Ag, Illinois (42) - Killens, Delaware (42) - PurpleAir e8A7 (42) - Gaylor St (41) - Montg, Alabama (41) - Southwood (41) - Chesapeake (41) - Socorro Hueco, El Paso, Texas (39) - El Cajon-Lexington Elementary School, San Diego, California (39) - Clarksville, Tennessee (39) - Segra Stadium (36) - Salisbury, IL. (34) - 2471 Thornton Rd (34) - World Trade Bridge, Laredo, Texas (34) - Death by Particulate (34) - PCAPCD_MARCH_ROAD (32) - Science Building (31) - KNI-Topeka, Kansas (30) - SES (30) - Friendship Park, North Carolina (30) - Newtwn, Kentucky (30) - Bismarck Residential, North Dakota (29) - Hawheye (28) - Tucson (Rita Ranch), Arizona (28) - Kapolei, Hawaii (27) - Rossiter Pump House, Montana (27) - Liverpool (25) - MPCA-Eagan (23) - Columbus Airport (23) - Paynes Prairie State Park, Alachua, Florida (22) - Amarillo (21) - Northern Lights/Boniface Pkwy (20) - West Willoughby Avenue (19) - NAS5898 (18) - 10920 Canyon RD (17) - Southwest Eden Prairie (17) - Harvey (17) - Kaltenborn (17) - Hillcrest HS, Missouri (16) - SE Charltte, NC (15) - Erie, Ohio (14) - Hitchcock Nature Center (13) - LRAPA-Saginaw (11) - Seminole Community College, Seminole, Florida (11) - Crow Middle/High School (9) - Coyote Creek (6) - Mount Helena Drive (5) - Crestview Dr. Summit Park (5) - Tallhalla (5) - VA Outside (4) - 400 Block N 4th St (3) - Stonebrook West (3) - Pierre, South Dakota (2) - Pt Stephens (1) - Godsey Rd (0) - Idaho Shakespeare Festival (no data)