AQSQID: 060371103

Site Name: Los Angeles - N. Main Street

Location: LA (Chavez Ravine Place), CA

Reporting: True, Located: True

Current AQI: 46.0

LA (Chavez Ravine Place) CA, US: 34.0669, -118.2417

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
July 18, 2019, 7 a.m. 15.8 ppb (15) 1.0 ppb (1) 13.9 ppb (13) 15.0 ppb (14) 13.5 ppb (12) 0.0 ppb (0) 16.0 ppb (12) N/A 24.0 μg/m3 (22) 11.0 μg/m3 (46) 46.0
 
July 18, 2019, 6 a.m. 15.7 ppb (15) 0.9 ppb (1) 13.7 ppb (13) 15.0 ppb (14) 13.5 ppb (12) 0.0 ppb (0) 19.0 ppb (15) N/A 34.0 μg/m3 (31) 18.0 μg/m3 (63) 63.0
 
July 18, 2019, 5 a.m. 10.4 ppb (10) 0.5 ppb (0) 9.5 ppb (9) 10.0 ppb (9) 9.4 ppb (9) 0.0 ppb (0) 27.0 ppb (21) N/A 26.0 μg/m3 (24) 14.0 μg/m3 (54) 54.0
 
July 18, 2019, 4 a.m. 9.9 ppb (9) 0.6 ppb (1) 8.4 ppb (8) 9.0 ppb (8) 8.0 ppb (7) 0.0 ppb (0) 30.0 ppb (23) N/A 26.0 μg/m3 (24) 11.0 μg/m3 (46) 46.0
 
July 18, 2019, 3 a.m. 9.6 ppb (9) 0.3 ppb (0) 8.1 ppb (8) 9.0 ppb (8) 8.0 ppb (7) 0.0 ppb (0) 31.0 ppb (24) N/A 27.0 μg/m3 (25) 11.0 μg/m3 (46) 46.0
 
July 18, 2019, 2 a.m. 11.6 ppb (11) 0.7 ppb (1) 10.1 ppb (9) 11.0 ppb (10) 9.5 ppb (9) 0.0 ppb (0) 30.0 ppb (23) N/A 25.0 μg/m3 (23) 9.0 μg/m3 (38) 38.0
 
July 18, 2019, 1 a.m. 13.6 ppb (13) 1.8 ppb (2) 12.2 ppb (11) 12.0 ppb (11) 10.3 ppb (10) 1.0 ppb (1) 34.0 ppb (26) N/A 27.0 μg/m3 (25) 8.0 μg/m3 (33) 33.0
 
July 18, 2019, midnight 17.0 ppb (16) 2.9 ppb (3) 15.5 ppb (14) 14.0 ppb (13) 12.4 ppb (11) 1.0 ppb (1) 37.0 ppb (28) N/A 31.0 μg/m3 (28) 10.0 μg/m3 (42) 42.0
 
July 17, 2019, 11 p.m. 14.0 ppb (13) 2.4 ppb (2) 13.0 ppb (12) 12.0 ppb (11) 10.4 ppb (10) 1.0 ppb (1) 41.0 ppb (32) N/A 36.0 μg/m3 (33) 11.0 μg/m3 (46) 46.0
 
July 17, 2019, 10 p.m. 13.6 ppb (13) 2.4 ppb (2) 12.4 ppb (11) 11.0 ppb (10) 10.0 ppb (9) 1.0 ppb (1) 43.0 ppb (33) N/A 38.0 μg/m3 (35) 16.0 μg/m3 (59) 59.0
 
July 17, 2019, 9 p.m. 13.0 ppb (12) 2.3 ppb (2) 12.4 ppb (11) 11.0 ppb (10) 10.0 ppb (9) 1.0 ppb (1) 44.0 ppb (34) N/A 38.0 μg/m3 (35) 20.0 μg/m3 (67) 67.0
 
July 17, 2019, 8 p.m. 14.4 ppb (13) 2.9 ppb (3) 13.3 ppb (12) 11.0 ppb (10) 10.5 ppb (10) 1.0 ppb (1) 42.0 ppb (32) N/A 44.0 μg/m3 (40) 19.0 μg/m3 (65) 65.0
 
July 17, 2019, 7 p.m. 18.6 ppb (17) 4.4 ppb (4) 17.4 ppb (16) 14.0 ppb (13) 13.4 ppb (12) 1.0 ppb (1) 42.0 ppb (32) N/A 52.0 μg/m3 (47) 17.0 μg/m3 (61) 61.0
 
July 17, 2019, 6 p.m. 20.4 ppb (19) 5.0 ppb (5) 18.7 ppb (17) 15.0 ppb (14) 14.0 ppb (13) 0.0 ppb (0) 38.0 ppb (29) N/A 46.0 μg/m3 (42) 34.0 μg/m3 (97) 97.0
 
July 17, 2019, 5 p.m. 25.6 ppb (24) 8.3 ppb (8) 24.8 ppb (23) 17.0 ppb (16) 16.5 ppb (15) 0.0 ppb (0) 26.0 ppb (20) N/A 46.0 μg/m3 (42) 8.0 μg/m3 (33) 42.0
 
July 17, 2019, 4 p.m. 29.2 ppb (27) 11.2 ppb (10) 25.6 ppb (24) 18.0 ppb (17) 14.6 ppb (14) 0.0 ppb (0) 19.0 ppb (15) N/A 41.0 μg/m3 (37) 23.0 μg/m3 (73) 73.0
 
July 17, 2019, 3 p.m. 24.3 ppb (23) 9.4 ppb (9) 21.1 ppb (20) 15.0 ppb (14) 11.9 ppb (11) 0.0 ppb (0) 17.0 ppb (13) N/A 42.0 μg/m3 (38) 24.0 μg/m3 (76) 76.0
 
July 17, 2019, 2 p.m. 19.5 ppb (18) 5.5 ppb (5) 16.0 ppb (15) 14.0 ppb (13) 10.4 ppb (10) 0.0 ppb (0) 14.0 ppb (11) N/A 34.0 μg/m3 (31) 18.0 μg/m3 (63) 63.0
 
July 17, 2019, 1 p.m. 17.2 ppb (16) 3.4 ppb (3) 12.9 ppb (12) 14.0 ppb (13) 9.3 ppb (9) 0.0 ppb (0) 13.0 ppb (10) N/A 49.0 μg/m3 (45) 21.0 μg/m3 (69) 69.0
 
July 17, 2019, noon 11.9 ppb (11) 1.2 ppb (1) 8.2 ppb (8) 11.0 ppb (10) 7.8 ppb (7) 0.0 ppb (0) 16.0 ppb (12) N/A 28.0 μg/m3 (25) 14.0 μg/m3 (54) 54.0
 
July 17, 2019, 11 a.m. 9.8 ppb (9) 0.8 ppb (1) 6.1 ppb (6) 9.0 ppb (8) 6.0 ppb (6) 0.0 ppb (0) 18.0 ppb (14) N/A 28.0 μg/m3 (25) 16.0 μg/m3 (59) 59.0
 
July 17, 2019, 10 a.m. 10.5 ppb (10) 1.1 ppb (1) 8.1 ppb (8) 9.0 ppb (8) 7.8 ppb (7) 0.0 ppb (0) 17.0 ppb (13) N/A 27.0 μg/m3 (25) 17.0 μg/m3 (61) 61.0
 
July 17, 2019, 9 a.m. 9.2 ppb (9) 0.8 ppb (1) 7.1 ppb (7) 8.0 ppb (7) 6.6 ppb (6) 0.0 ppb (0) 19.0 ppb (15) N/A 24.0 μg/m3 (22) 16.0 μg/m3 (59) 59.0
 
July 17, 2019, 8 a.m. 9.9 ppb (9) 0.9 ppb (1) 8.5 ppb (8) 9.0 ppb (8) 8.3 ppb (8) 0.0 ppb (0) 18.0 ppb (14) N/A 23.0 μg/m3 (21) 17.0 μg/m3 (61) 61.0
 
July 17, 2019, 7 a.m. 12.6 ppb (12) 1.2 ppb (1) 10.3 ppb (10) 11.0 ppb (10) 10.0 ppb (9) 0.0 ppb (0) 19.0 ppb (15) N/A 34.0 μg/m3 (31) 15.0 μg/m3 (56) 56.0
 
July 17, 2019, 6 a.m. 20.8 ppb (19) 3.9 ppb (4) 20.2 ppb (19) 17.0 ppb (16) 18.2 ppb (17) 0.0 ppb (0) 13.0 ppb (10) N/A 34.0 μg/m3 (31) 16.0 μg/m3 (59) 59.0
 
July 17, 2019, 5 a.m. 19.7 ppb (18) 1.3 ppb (1) 18.6 ppb (17) 18.0 ppb (17) 18.2 ppb (17) 1.0 ppb (1) 17.0 ppb (13) N/A 35.0 μg/m3 (32) 14.0 μg/m3 (54) 54.0
 
July 17, 2019, 4 a.m. 15.3 ppb (14) 0.8 ppb (1) 13.6 ppb (13) 14.0 ppb (13) 13.4 ppb (12) 1.0 ppb (1) 24.0 ppb (18) N/A 30.0 μg/m3 (27) 14.0 μg/m3 (54) 54.0
 
July 17, 2019, 3 a.m. 15.1 ppb (14) 0.7 ppb (1) 13.4 ppb (12) 14.0 ppb (13) 13.3 ppb (12) 0.0 ppb (0) 30.0 ppb (23) N/A 39.0 μg/m3 (35) 16.0 μg/m3 (59) 59.0
 
July 17, 2019, 2 a.m. 18.3 ppb (17) 1.0 ppb (1) 16.8 ppb (16) 17.0 ppb (16) 16.1 ppb (15) 1.0 ppb (1) 34.0 ppb (26) N/A 38.0 μg/m3 (35) 16.0 μg/m3 (59) 59.0
 
July 17, 2019, 1 a.m. 20.8 ppb (19) 2.3 ppb (2) 19.1 ppb (18) 18.0 ppb (17) 16.8 ppb (16) 1.0 ppb (1) 40.0 ppb (31) N/A 40.0 μg/m3 (36) 20.0 μg/m3 (67) 67.0
 
July 17, 2019, midnight 19.9 ppb (18) 2.7 ppb (3) 18.6 ppb (17) 17.0 ppb (16) 15.7 ppb (15) 1.0 ppb (1) 46.0 ppb (35) N/A 42.0 μg/m3 (38) 20.0 μg/m3 (67) 67.0
 
July 16, 2019, 11 p.m. 19.6 ppb (18) 2.5 ppb (2) 18.5 ppb (17) 17.0 ppb (16) 15.7 ppb (15) 1.0 ppb (1) 52.0 ppb (40) N/A 47.0 μg/m3 (43) 23.0 μg/m3 (73) 73.0
 
July 16, 2019, 10 p.m. 19.6 ppb (18) 2.5 ppb (2) 18.8 ppb (17) 17.0 ppb (16) 16.2 ppb (15) 1.0 ppb (1) 57.0 ppb (44) N/A 51.0 μg/m3 (46) 22.0 μg/m3 (71) 71.0
 
July 16, 2019, 9 p.m. 18.2 ppb (17) 2.2 ppb (2) 17.5 ppb (16) 16.0 ppb (15) 15.3 ppb (14) 2.0 ppb (3) 62.0 ppb (48) N/A 46.0 μg/m3 (42) 21.0 μg/m3 (69) 69.0
 
July 16, 2019, 8 p.m. 21.0 ppb (19) 3.5 ppb (3) 20.3 ppb (19) 18.0 ppb (17) 16.5 ppb (15) 2.0 ppb (3) 54.0 ppb (42) N/A 51.0 μg/m3 (46) 17.0 μg/m3 (61) 61.0
 
July 16, 2019, 7 p.m. 27.0 ppb (25) 5.5 ppb (5) 25.9 ppb (24) 22.0 ppb (20) 20.7 ppb (19) 2.0 ppb (3) 47.0 ppb (36) N/A 51.0 μg/m3 (46) 22.0 μg/m3 (71) 71.0
 
July 16, 2019, 6 p.m. 39.1 ppb (36) 10.0 ppb (9) 35.3 ppb (33) 29.0 ppb (27) 26.1 ppb (24) 1.0 ppb (1) 38.0 ppb (29) N/A 52.0 μg/m3 (47) 31.0 μg/m3 (90) 90.0
 
July 16, 2019, 5 p.m. 48.5 ppb (45) 16.1 ppb (15) 45.0 ppb (42) 32.0 ppb (30) 29.6 ppb (27) 1.0 ppb (1) 27.0 ppb (21) N/A 52.0 μg/m3 (47) 33.0 μg/m3 (95) 95.0
 
July 16, 2019, 4 p.m. 84.0 ppb (82) 35.8 ppb (33) 81.8 ppb (80) 48.0 ppb (44) 43.4 ppb (40) 1.0 ppb (1) 15.0 ppb (12) N/A 72.0 μg/m3 (58) 31.0 μg/m3 (90) 90.0
 
July 16, 2019, 3 p.m. 114.3 ppb (103) 69.2 ppb (66) 106.4 ppb (101) 45.0 ppb (42) 38.0 ppb (35) 1.0 ppb (1) 6.0 ppb (5) N/A 71.0 μg/m3 (58) 33.0 μg/m3 (95) 103.0
 
July 16, 2019, 2 p.m. 106.6 ppb (101) 71.6 ppb (69) 96.7 ppb (95) 35.0 ppb (32) 24.9 ppb (23) 1.0 ppb (1) 4.0 ppb (3) N/A 84.0 μg/m3 (64) 28.0 μg/m3 (84) 101.0
 
July 16, 2019, 1 p.m. 94.3 ppb (93) 67.0 ppb (64) 78.7 ppb (76) 27.0 ppb (25) 11.1 ppb (10) 1.0 ppb (1) 2.0 ppb (2) N/A 44.0 μg/m3 (40) 25.0 μg/m3 (78) 93.0
 
July 16, 2019, noon 62.6 ppb (59) 37.1 ppb (34) 54.6 ppb (51) 26.0 ppb (24) 19.8 ppb (18) 0.0 ppb (0) 2.0 ppb (2) N/A 35.0 μg/m3 (32) 18.0 μg/m3 (63) 63.0
 
July 16, 2019, 11 a.m. 52.2 ppb (48) 27.0 ppb (25) 45.3 ppb (42) 25.0 ppb (23) 17.0 ppb (16) 0.0 ppb (0) 2.0 ppb (2) N/A 35.0 μg/m3 (32) 18.0 μg/m3 (63) 63.0
 
July 16, 2019, 10 a.m. 42.1 ppb (39) 14.6 ppb (14) 36.0 ppb (33) 28.0 ppb (26) 26.4 ppb (24) 0.0 ppb (0) 2.0 ppb (2) N/A 39.0 μg/m3 (35) 13.0 μg/m3 (52) 52.0
 
July 16, 2019, 9 a.m. 39.7 ppb (37) 9.1 ppb (8) 34.4 ppb (32) 31.0 ppb (29) 25.8 ppb (24) 0.0 ppb (0) 2.0 ppb (2) N/A 35.0 μg/m3 (32) 19.0 μg/m3 (65) 65.0
 
July 16, 2019, 8 a.m. 40.9 ppb (38) 9.7 ppb (9) 38.8 ppb (36) 31.0 ppb (29) 31.5 ppb (29) 0.0 ppb (0) 2.0 ppb (2) N/A 43.0 μg/m3 (39) 22.0 μg/m3 (71) 71.0
 
July 16, 2019, 7 a.m. 39.2 ppb (36) 6.4 ppb (6) 37.2 ppb (34) 33.0 ppb (31) 32.5 ppb (30) 0.0 ppb (0) 2.0 ppb (2) N/A 37.0 μg/m3 (34) 17.0 μg/m3 (61) 61.0
 
July 16, 2019, 6 a.m. 45.3 ppb (42) 13.0 ppb (12) 40.5 ppb (38) 32.0 ppb (30) 30.9 ppb (29) 0.0 ppb (0) 2.0 ppb (2) N/A 26.0 μg/m3 (24) 17.0 μg/m3 (61) 61.0
 
July 16, 2019, 5 a.m. 23.0 ppb (21) 1.6 ppb (1) 23.4 ppb (22) 21.0 ppb (19) 22.6 ppb (21) 0.0 ppb (0) 12.0 ppb (9) N/A 24.0 μg/m3 (22) 14.0 μg/m3 (54) 54.0
 
July 16, 2019, 4 a.m. 15.8 ppb (15) 0.9 ppb (1) 14.0 ppb (13) 15.0 ppb (14) 13.9 ppb (13) 0.0 ppb (0) 20.0 ppb (15) N/A 20.0 μg/m3 (18) 9.0 μg/m3 (38) 38.0
 
July 16, 2019, 3 a.m. 13.3 ppb (12) 0.6 ppb (1) 11.4 ppb (11) 13.0 ppb (12) 11.3 ppb (10) 0.0 ppb (0) 24.0 ppb (18) N/A 22.0 μg/m3 (20) 12.0 μg/m3 (50) 50.0
 
July 16, 2019, 2 a.m. 11.9 ppb (11) 0.7 ppb (1) 10.1 ppb (9) 11.0 ppb (10) 9.5 ppb (9) 0.0 ppb (0) 30.0 ppb (23) N/A 25.0 μg/m3 (23) 12.0 μg/m3 (50) 50.0
 
July 16, 2019, 1 a.m. 15.5 ppb (14) 1.7 ppb (2) 13.6 ppb (13) 14.0 ppb (13) 11.6 ppb (11) 0.0 ppb (0) 38.0 ppb (29) N/A 27.0 μg/m3 (25) 16.0 μg/m3 (59) 59.0
 
July 16, 2019, midnight 15.2 ppb (14) 2.0 ppb (2) 13.9 ppb (13) 13.0 ppb (12) 11.7 ppb (11) 0.0 ppb (0) 46.0 ppb (35) N/A 25.0 μg/m3 (23) 16.0 μg/m3 (59) 59.0
 
July 15, 2019, 11 p.m. 12.0 ppb (11) 1.6 ppb (1) 11.2 ppb (10) 10.0 ppb (9) 9.5 ppb (9) 0.0 ppb (0) 51.0 ppb (39) N/A 27.0 μg/m3 (25) 13.0 μg/m3 (52) 52.0
 
July 15, 2019, 10 p.m. 12.9 ppb (12) 1.5 ppb (1) 13.1 ppb (12) 11.0 ppb (10) 11.4 ppb (11) 1.0 ppb (1) 60.0 ppb (46) N/A 28.0 μg/m3 (25) 19.0 μg/m3 (65) 65.0
 
July 15, 2019, 9 p.m. 17.8 ppb (16) 2.4 ppb (2) 17.7 ppb (16) 15.0 ppb (14) 15.3 ppb (14) 1.0 ppb (1) 60.0 ppb (46) N/A 41.0 μg/m3 (37) 26.0 μg/m3 (80) 80.0
 
July 15, 2019, 8 p.m. 17.7 ppb (16) 2.4 ppb (2) 18.5 ppb (17) 15.0 ppb (14) 16.1 ppb (15) 1.0 ppb (1) 58.0 ppb (45) N/A 44.0 μg/m3 (40) 27.0 μg/m3 (82) 82.0
 
July 15, 2019, 7 p.m. 27.2 ppb (25) 4.9 ppb (5) 28.1 ppb (26) 22.0 ppb (20) 23.2 ppb (21) 1.0 ppb (1) 48.0 ppb (37) N/A 64.0 μg/m3 (54) 32.0 μg/m3 (93) 93.0
 
July 15, 2019, 6 p.m. 27.0 ppb (25) 5.1 ppb (5) 28.1 ppb (26) 22.0 ppb (20) 23.1 ppb (21) 0.0 ppb (0) 48.0 ppb (37) N/A 58.0 μg/m3 (52) 34.0 μg/m3 (97) 97.0
 
July 15, 2019, 5 p.m. 48.5 ppb (45) 16.7 ppb (15) 48.3 ppb (45) 32.0 ppb (30) 31.4 ppb (29) 0.0 ppb (0) 25.0 ppb (19) N/A 59.0 μg/m3 (52) 37.0 μg/m3 (104) 104.0
 
July 15, 2019, 4 p.m. 58.0 ppb (54) 26.8 ppb (25) 55.9 ppb (52) 31.0 ppb (29) 28.8 ppb (27) 1.0 ppb (1) 15.0 ppb (12) N/A 61.0 μg/m3 (53) 35.0 μg/m3 (99) 99.0
 
July 15, 2019, 3 p.m. 59.0 ppb (55) 31.8 ppb (29) 55.4 ppb (51) 27.0 ppb (25) 24.1 ppb (22) 1.0 ppb (1) 9.0 ppb (7) N/A 52.0 μg/m3 (47) 37.0 μg/m3 (104) 104.0
 
July 15, 2019, 2 p.m. 46.4 ppb (43) 22.6 ppb (21) 41.5 ppb (38) 24.0 ppb (22) 19.9 ppb (18) 1.0 ppb (1) 7.0 ppb (5) N/A 45.0 μg/m3 (41) 31.0 μg/m3 (90) 90.0
 
July 15, 2019, 1 p.m. 59.7 ppb (56) 32.5 ppb (30) 50.3 ppb (47) 27.0 ppb (25) 17.2 ppb (16) 0.0 ppb (0) 3.0 ppb (2) N/A 45.0 μg/m3 (41) 29.0 μg/m3 (86) 86.0
 
July 15, 2019, noon 29.5 ppb (27) 10.1 ppb (9) 24.6 ppb (23) 19.0 ppb (18) 14.8 ppb (14) 0.0 ppb (0) 5.0 ppb (4) N/A 25.0 μg/m3 (23) 19.0 μg/m3 (65) 65.0
 
July 15, 2019, 11 a.m. 12.1 ppb (11) 1.5 ppb (1) 9.1 ppb (8) 11.0 ppb (10) 8.7 ppb (8) 0.0 ppb (0) 13.0 ppb (10) N/A 24.0 μg/m3 (22) 11.0 μg/m3 (46) 46.0
 
July 15, 2019, 10 a.m. 15.1 ppb (14) 2.2 ppb (2) 13.0 ppb (12) 13.0 ppb (12) 11.9 ppb (11) 0.0 ppb (0) 11.0 ppb (8) N/A 18.0 μg/m3 (16) 16.0 μg/m3 (59) 59.0
 
July 15, 2019, 9 a.m. 17.2 ppb (16) 1.8 ppb (2) 10.8 ppb (10) 15.0 ppb (14) 10.4 ppb (10) 0.0 ppb (0) 11.0 ppb (8) N/A 23.0 μg/m3 (21) 15.0 μg/m3 (56) 56.0
 
July 15, 2019, 8 a.m. 24.8 ppb (23) 1.6 ppb (1) 21.4 ppb (20) 23.0 ppb (21) 21.2 ppb (20) 0.0 ppb (0) 10.0 ppb (8) N/A 34.0 μg/m3 (31) 21.0 μg/m3 (69) 69.0
 
July 15, 2019, 7 a.m. 20.5 ppb (19) 1.3 ppb (1) 19.1 ppb (18) 19.0 ppb (18) 18.9 ppb (18) 0.0 ppb (0) 15.0 ppb (12) N/A 34.0 μg/m3 (31) 15.0 μg/m3 (56) 56.0
 
July 15, 2019, 6 a.m. 16.1 ppb (15) 1.0 ppb (1) 14.3 ppb (13) 15.0 ppb (14) 14.3 ppb (13) 0.0 ppb (0) 18.0 ppb (14) N/A 24.0 μg/m3 (22) 15.0 μg/m3 (56) 56.0
 
July 15, 2019, 5 a.m. 11.7 ppb (11) 0.7 ppb (1) 10.9 ppb (10) 11.0 ppb (10) 10.7 ppb (10) 0.0 ppb (0) 24.0 ppb (18) N/A 22.0 μg/m3 (20) 12.0 μg/m3 (50) 50.0
 
July 15, 2019, 4 a.m. 8.7 ppb (8) 0.5 ppb (0) 6.8 ppb (6) 8.0 ppb (7) 6.7 ppb (6) 0.0 ppb (0) 28.0 ppb (22) N/A 18.0 μg/m3 (16) 6.0 μg/m3 (25) 25.0
 
July 15, 2019, 3 a.m. 9.8 ppb (9) 0.5 ppb (0) 7.7 ppb (7) 9.0 ppb (8) 7.5 ppb (7) 0.0 ppb (0) 30.0 ppb (23) N/A 14.0 μg/m3 (13) 7.0 μg/m3 (29) 29.0
 
July 15, 2019, 2 a.m. 7.9 ppb (7) 0.4 ppb (0) 5.9 ppb (5) 7.0 ppb (6) 5.6 ppb (5) 0.0 ppb (0) 31.0 ppb (24) N/A 23.0 μg/m3 (21) 11.0 μg/m3 (46) 46.0
 
July 15, 2019, 1 a.m. 6.3 ppb (6) 0.6 ppb (1) 3.8 ppb (4) 6.0 ppb (6) 3.2 ppb (3) 0.0 ppb (0) 41.0 ppb (32) N/A 22.0 μg/m3 (20) 15.0 μg/m3 (56) 56.0
 
July 15, 2019, midnight 5.9 ppb (5) 0.7 ppb (1) 3.1 ppb (3) 5.0 ppb (5) 2.4 ppb (2) 0.0 ppb (0) 44.0 ppb (34) N/A 25.0 μg/m3 (23) 15.0 μg/m3 (56) 56.0
 
July 14, 2019, 11 p.m. 5.4 ppb (5) 0.5 ppb (0) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 51.0 ppb (39) N/A 28.0 μg/m3 (25) 19.0 μg/m3 (65) 65.0
 
July 14, 2019, 10 p.m. 6.9 ppb (6) 0.5 ppb (0) 7.2 ppb (7) 6.0 ppb (6) 6.7 ppb (6) 0.0 ppb (0) 64.0 ppb (49) N/A 43.0 μg/m3 (39) 29.0 μg/m3 (86) 86.0
 
July 14, 2019, 9 p.m. 7.0 ppb (6) 0.5 ppb (0) 7.2 ppb (7) 6.0 ppb (6) 6.8 ppb (6) 0.0 ppb (0) 65.0 ppb (50) N/A 45.0 μg/m3 (41) 27.0 μg/m3 (82) 82.0
 
July 14, 2019, 8 p.m. 7.2 ppb (7) 0.6 ppb (1) 7.5 ppb (7) 7.0 ppb (6) 7.0 ppb (6) 0.0 ppb (0) 62.0 ppb (48) N/A 46.0 μg/m3 (42) 27.0 μg/m3 (82) 82.0
 
July 14, 2019, 7 p.m. 9.3 ppb (9) 0.9 ppb (1) 10.2 ppb (9) 8.0 ppb (7) 9.4 ppb (9) 0.0 ppb (0) 64.0 ppb (49) N/A 45.0 μg/m3 (41) 23.0 μg/m3 (73) 73.0
 
July 14, 2019, 6 p.m. 10.6 ppb (10) 1.2 ppb (1) 11.5 ppb (11) 9.0 ppb (8) 10.6 ppb (10) 0.0 ppb (0) 61.0 ppb (47) N/A 45.0 μg/m3 (41) 26.0 μg/m3 (80) 80.0
 
July 14, 2019, 5 p.m. 16.5 ppb (15) 3.3 ppb (3) 16.9 ppb (16) 13.0 ppb (12) 13.9 ppb (13) 0.0 ppb (0) 43.0 ppb (33) N/A 48.0 μg/m3 (44) 33.0 μg/m3 (95) 95.0
 
July 14, 2019, 4 p.m. 17.3 ppb (16) 4.6 ppb (4) 17.4 ppb (16) 13.0 ppb (12) 13.0 ppb (12) 0.0 ppb (0) 30.0 ppb (23) N/A 38.0 μg/m3 (35) 28.0 μg/m3 (84) 84.0
 
July 14, 2019, 3 p.m. 13.0 ppb (12) 3.9 ppb (4) 12.6 ppb (12) 9.0 ppb (8) 9.1 ppb (8) 0.0 ppb (0) 23.0 ppb (18) N/A 33.0 μg/m3 (30) 26.0 μg/m3 (80) 80.0
 
July 14, 2019, 2 p.m. 11.2 ppb (10) 3.1 ppb (3) 10.0 ppb (9) 8.0 ppb (7) 7.5 ppb (7) 0.0 ppb (0) 18.0 ppb (14) N/A 32.0 μg/m3 (29) 23.0 μg/m3 (73) 73.0
 
July 14, 2019, 1 p.m. 9.7 ppb (9) 1.3 ppb (1) 7.0 ppb (6) 8.0 ppb (7) 6.4 ppb (6) 0.0 ppb (0) 17.0 ppb (13) N/A 34.0 μg/m3 (31) 25.0 μg/m3 (78) 78.0
 
July 14, 2019, noon 9.1 ppb (8) 0.9 ppb (1) 7.4 ppb (7) 8.0 ppb (7) 7.3 ppb (7) 0.0 ppb (0) 18.0 ppb (14) N/A 27.0 μg/m3 (25) 22.0 μg/m3 (71) 71.0
 
July 14, 2019, 11 a.m. 9.9 ppb (9) 1.3 ppb (1) 6.7 ppb (6) 9.0 ppb (8) 6.1 ppb (6) 0.0 ppb (0) 18.0 ppb (14) N/A 31.0 μg/m3 (28) 19.0 μg/m3 (65) 65.0
 
July 14, 2019, 10 a.m. 8.6 ppb (8) 0.8 ppb (1) 6.5 ppb (6) 8.0 ppb (7) 6.5 ppb (6) 0.0 ppb (0) 20.0 ppb (15) N/A 25.0 μg/m3 (23) 19.0 μg/m3 (65) 65.0
 
July 14, 2019, 9 a.m. 9.3 ppb (9) 1.3 ppb (1) 7.6 ppb (7) 8.0 ppb (7) 6.7 ppb (6) 0.0 ppb (0) 20.0 ppb (15) N/A 27.0 μg/m3 (25) 21.0 μg/m3 (69) 69.0
 
July 14, 2019, 8 a.m. 10.3 ppb (10) 0.9 ppb (1) 9.8 ppb (9) 9.0 ppb (8) 9.6 ppb (9) 0.0 ppb (0) 19.0 ppb (15) N/A 31.0 μg/m3 (28) 23.0 μg/m3 (73) 73.0
 
July 14, 2019, 7 a.m. 15.1 ppb (14) 1.1 ppb (1) 13.4 ppb (12) 14.0 ppb (13) 13.2 ppb (12) 0.0 ppb (0) 13.0 ppb (10) N/A 36.0 μg/m3 (33) 19.0 μg/m3 (65) 65.0
 
July 14, 2019, 6 a.m. 16.7 ppb (15) 1.1 ppb (1) 14.8 ppb (14) 16.0 ppb (15) 14.6 ppb (14) 0.0 ppb (0) 15.0 ppb (12) N/A 30.0 μg/m3 (27) 17.0 μg/m3 (61) 61.0
 
July 14, 2019, 5 a.m. 9.5 ppb (9) 0.5 ppb (0) 9.4 ppb (9) 9.0 ppb (8) 8.3 ppb (8) 0.0 ppb (0) 26.0 ppb (20) N/A 30.0 μg/m3 (27) 15.0 μg/m3 (56) 56.0
 
July 14, 2019, 4 a.m. 8.3 ppb (8) 0.4 ppb (0) 6.8 ppb (6) 8.0 ppb (7) 6.7 ppb (6) 0.0 ppb (0) 30.0 ppb (23) N/A 32.0 μg/m3 (29) 18.0 μg/m3 (63) 63.0
 
July 14, 2019, 3 a.m. 8.4 ppb (8) 0.3 ppb (0) 7.0 ppb (6) 8.0 ppb (7) 7.0 ppb (6) 0.0 ppb (0) 34.0 ppb (26) N/A 32.0 μg/m3 (29) 19.0 μg/m3 (65) 65.0
 
July 14, 2019, 2 a.m. 10.7 ppb (10) 0.4 ppb (0) 9.8 ppb (9) 10.0 ppb (9) 9.5 ppb (9) 0.0 ppb (0) 44.0 ppb (34) N/A 37.0 μg/m3 (34) 16.0 μg/m3 (59) 59.0
 
July 14, 2019, 1 a.m. 10.6 ppb (10) 0.8 ppb (1) 9.7 ppb (9) 10.0 ppb (9) 9.0 ppb (8) 0.0 ppb (0) 54.0 ppb (42) N/A 30.0 μg/m3 (27) 16.0 μg/m3 (59) 59.0
 
July 14, 2019, midnight 10.2 ppb (9) 1.0 ppb (1) 9.7 ppb (9) 9.0 ppb (8) 8.7 ppb (8) 0.0 ppb (0) 55.0 ppb (42) N/A 31.0 μg/m3 (28) 19.0 μg/m3 (65) 65.0
 
July 13, 2019, 11 p.m. 13.6 ppb (13) 1.7 ppb (2) 13.3 ppb (12) 12.0 ppb (11) 11.5 ppb (11) 1.0 ppb (1) 54.0 ppb (42) N/A 35.0 μg/m3 (32) 19.0 μg/m3 (65) 65.0
 
July 13, 2019, 10 p.m. 17.3 ppb (16) 2.0 ppb (2) 17.2 ppb (16) 15.0 ppb (14) 15.1 ppb (14) 1.0 ppb (1) 61.0 ppb (47) N/A 40.0 μg/m3 (36) 25.0 μg/m3 (78) 78.0
 
July 13, 2019, 9 p.m. 16.8 ppb (16) 1.9 ppb (2) 17.2 ppb (16) 15.0 ppb (14) 15.3 ppb (14) 1.0 ppb (1) 64.0 ppb (49) N/A 50.0 μg/m3 (45) 28.0 μg/m3 (84) 84.0
 
July 13, 2019, 8 p.m. 12.3 ppb (11) 0.9 ppb (1) 13.2 ppb (12) 11.0 ppb (10) 12.5 ppb (12) 1.0 ppb (1) 83.0 ppb (65) N/A 48.0 μg/m3 (44) 28.0 μg/m3 (84) 84.0
 
July 13, 2019, 7 p.m. 14.3 ppb (13) 1.6 ppb (1) 14.8 ppb (14) 13.0 ppb (12) 13.5 ppb (12) 1.0 ppb (1) 71.0 ppb (55) N/A 51.0 μg/m3 (46) 27.0 μg/m3 (82) 82.0
 
July 13, 2019, 6 p.m. 20.5 ppb (19) 4.2 ppb (4) 19.9 ppb (18) 16.0 ppb (15) 16.0 ppb (15) 1.0 ppb (1) 48.0 ppb (37) N/A 52.0 μg/m3 (47) 30.0 μg/m3 (88) 88.0
 
July 13, 2019, 5 p.m. 26.9 ppb (25) 8.2 ppb (8) 25.7 ppb (24) 19.0 ppb (18) 17.9 ppb (17) 1.0 ppb (1) 30.0 ppb (23) N/A 49.0 μg/m3 (45) 29.0 μg/m3 (86) 86.0
 
July 13, 2019, 4 p.m. 34.6 ppb (32) 12.9 ppb (12) 31.9 ppb (30) 22.0 ppb (20) 19.1 ppb (18) 1.0 ppb (1) 20.0 ppb (15) N/A 47.0 μg/m3 (43) 21.0 μg/m3 (69) 69.0
 
July 13, 2019, 3 p.m. 52.2 ppb (48) 26.1 ppb (24) 47.3 ppb (44) 26.0 ppb (24) 21.4 ppb (20) 1.0 ppb (1) 11.0 ppb (8) N/A 42.0 μg/m3 (38) 25.0 μg/m3 (78) 78.0
 
July 13, 2019, 2 p.m. 56.0 ppb (52) 30.5 ppb (28) 45.7 ppb (42) 26.0 ppb (24) 19.2 ppb (18) 1.0 ppb (1) 7.0 ppb (5) N/A 45.0 μg/m3 (41) 23.0 μg/m3 (73) 73.0
 
July 13, 2019, 1 p.m. 50.2 ppb (46) 28.9 ppb (27) 37.8 ppb (35) 21.0 ppb (19) 14.1 ppb (13) 1.0 ppb (1) 3.0 ppb (2) N/A 33.0 μg/m3 (30) 18.0 μg/m3 (63) 63.0
 
July 13, 2019, noon 48.6 ppb (45) 26.5 ppb (25) 42.8 ppb (40) 22.0 ppb (20) 19.6 ppb (18) 1.0 ppb (1) 2.0 ppb (2) N/A 27.0 μg/m3 (25) 15.0 μg/m3 (56) 56.0
 
July 13, 2019, 11 a.m. 43.6 ppb (40) 15.6 ppb (14) 37.0 ppb (34) 28.0 ppb (26) 20.6 ppb (19) 1.0 ppb (1) 2.0 ppb (2) N/A 37.0 μg/m3 (34) 16.0 μg/m3 (59) 59.0
 
July 13, 2019, 10 a.m. 36.5 ppb (34) 11.8 ppb (11) 32.0 ppb (30) 25.0 ppb (23) 22.8 ppb (21) 0.0 ppb (0) 2.0 ppb (2) N/A 36.0 μg/m3 (33) 17.0 μg/m3 (61) 61.0
 
July 13, 2019, 9 a.m. 22.9 ppb (21) 3.9 ppb (4) 19.9 ppb (18) 19.0 ppb (18) 16.8 ppb (16) 0.0 ppb (0) 4.0 ppb (3) N/A 28.0 μg/m3 (25) 16.0 μg/m3 (59) 59.0
 
July 13, 2019, 8 a.m. 22.9 ppb (21) 3.0 ppb (3) 24.2 ppb (22) 20.0 ppb (19) 22.2 ppb (21) 0.0 ppb (0) 6.0 ppb (5) N/A 37.0 μg/m3 (34) 14.0 μg/m3 (54) 54.0
 
July 13, 2019, 7 a.m. 32.6 ppb (30) 6.5 ppb (6) 31.0 ppb (29) 26.0 ppb (24) 26.4 ppb (24) 0.0 ppb (0) 4.0 ppb (3) N/A 38.0 μg/m3 (35) 15.0 μg/m3 (56) 56.0
 
July 13, 2019, 6 a.m. 23.4 ppb (22) 2.8 ppb (3) 21.6 ppb (20) 21.0 ppb (19) 20.0 ppb (19) 0.0 ppb (0) 7.0 ppb (5) N/A 55.0 μg/m3 (50) 19.0 μg/m3 (65) 65.0
 
July 13, 2019, 5 a.m. 20.1 ppb (19) 1.7 ppb (2) 19.5 ppb (18) 18.0 ppb (17) 18.6 ppb (17) 0.0 ppb (0) 10.0 ppb (8) N/A 34.0 μg/m3 (31) 10.0 μg/m3 (42) 42.0
 
July 13, 2019, 4 a.m. 12.9 ppb (12) 0.9 ppb (1) 11.6 ppb (11) 12.0 ppb (11) 11.3 ppb (10) 0.0 ppb (0) 17.0 ppb (13) N/A 22.0 μg/m3 (20) 8.0 μg/m3 (33) 33.0
 
July 13, 2019, 3 a.m. 9.9 ppb (9) 0.5 ppb (0) 8.7 ppb (8) 9.0 ppb (8) 8.6 ppb (8) 0.0 ppb (0) 23.0 ppb (18) N/A 27.0 μg/m3 (25) 10.0 μg/m3 (42) 42.0
 
July 13, 2019, 2 a.m. 14.3 ppb (13) 0.9 ppb (1) 13.1 ppb (12) 13.0 ppb (12) 12.4 ppb (11) 0.0 ppb (0) 31.0 ppb (24) N/A 26.0 μg/m3 (24) 16.0 μg/m3 (59) 59.0
 
July 13, 2019, 1 a.m. 9.6 ppb (9) 0.8 ppb (1) 8.9 ppb (8) 9.0 ppb (8) 8.0 ppb (7) 0.0 ppb (0) 46.0 ppb (35) N/A 23.0 μg/m3 (21) 9.0 μg/m3 (38) 38.0
 
July 13, 2019, midnight 8.1 ppb (8) 1.0 ppb (1) 7.7 ppb (7) 7.0 ppb (6) 6.6 ppb (6) 0.0 ppb (0) 46.0 ppb (35) N/A 33.0 μg/m3 (30) 16.0 μg/m3 (59) 59.0
 
July 12, 2019, 11 p.m. 9.7 ppb (9) 1.0 ppb (1) 9.7 ppb (9) 9.0 ppb (8) 8.6 ppb (8) 0.0 ppb (0) 58.0 ppb (45) N/A 39.0 μg/m3 (35) 20.0 μg/m3 (67) 67.0
 
July 12, 2019, 10 p.m. 12.9 ppb (12) 1.5 ppb (1) 13.1 ppb (12) 11.0 ppb (10) 11.6 ppb (11) 1.0 ppb (1) 62.0 ppb (48) N/A 51.0 μg/m3 (46) 21.0 μg/m3 (69) 69.0
 
July 12, 2019, 9 p.m. 16.9 ppb (16) 2.1 ppb (2) 17.6 ppb (16) 15.0 ppb (14) 15.5 ppb (14) 1.0 ppb (1) 60.0 ppb (46) N/A 54.0 μg/m3 (49) 32.0 μg/m3 (93) 93.0
 
July 12, 2019, 8 p.m. 23.7 ppb (22) 4.2 ppb (4) 24.2 ppb (22) 19.0 ppb (18) 19.9 ppb (18) 1.0 ppb (1) 47.0 ppb (36) N/A 64.0 μg/m3 (54) 31.0 μg/m3 (90) 90.0
 
July 12, 2019, 7 p.m. 28.3 ppb (26) 4.7 ppb (4) 27.1 ppb (25) 24.0 ppb (22) 23.1 ppb (21) 1.0 ppb (1) 60.0 ppb (46) N/A 56.0 μg/m3 (50) 27.0 μg/m3 (82) 82.0
 
July 12, 2019, 6 p.m. 32.6 ppb (30) 6.9 ppb (6) 31.7 ppb (29) 26.0 ppb (24) 25.5 ppb (24) 1.0 ppb (1) 47.0 ppb (36) N/A 55.0 μg/m3 (50) 27.0 μg/m3 (82) 82.0
 
July 12, 2019, 5 p.m. 56.3 ppb (52) 20.6 ppb (19) 51.8 ppb (48) 36.0 ppb (33) 32.3 ppb (30) 1.0 ppb (1) 25.0 ppb (19) N/A 54.0 μg/m3 (49) 26.0 μg/m3 (80) 80.0
 
July 12, 2019, 4 p.m. 64.3 ppb (61) 30.3 ppb (28) 60.6 ppb (57) 34.0 ppb (31) 29.9 ppb (28) 1.0 ppb (1) 14.0 ppb (11) N/A 61.0 μg/m3 (53) 33.0 μg/m3 (95) 95.0
 
July 12, 2019, 3 p.m. 70.5 ppb (68) 41.6 ppb (39) 65.0 ppb (62) 29.0 ppb (27) 21.5 ppb (20) 1.0 ppb (1) 8.0 ppb (6) N/A 52.0 μg/m3 (47) 25.0 μg/m3 (78) 78.0
 
July 12, 2019, 2 p.m. 64.0 ppb (61) 39.2 ppb (36) 57.2 ppb (53) 25.0 ppb (23) 17.2 ppb (16) 1.0 ppb (1) 6.0 ppb (5) N/A 53.0 μg/m3 (48) 20.0 μg/m3 (67) 67.0
 
July 12, 2019, 1 p.m. 46.9 ppb (43) 26.1 ppb (24) 38.1 ppb (35) 21.0 ppb (19) 12.9 ppb (12) 1.0 ppb (1) 3.0 ppb (2) N/A 32.0 μg/m3 (29) 21.0 μg/m3 (69) 69.0
 
July 12, 2019, noon 40.5 ppb (38) 21.1 ppb (20) 35.0 ppb (32) 19.0 ppb (18) 16.8 ppb (16) 0.0 ppb (0) 2.0 ppb (2) N/A 32.0 μg/m3 (29) 16.0 μg/m3 (59) 59.0
 
July 12, 2019, 11 a.m. 30.1 ppb (28) 10.2 ppb (9) 27.0 ppb (25) 20.0 ppb (19) 15.8 ppb (15) 0.0 ppb (0) 3.0 ppb (2) N/A 28.0 μg/m3 (25) 11.0 μg/m3 (46) 46.0
 
July 12, 2019, 10 a.m. 26.6 ppb (25) 6.6 ppb (6) 22.4 ppb (21) 20.0 ppb (19) 19.5 ppb (18) 1.0 ppb (1) 4.0 ppb (3) N/A 21.0 μg/m3 (19) 14.0 μg/m3 (54) 54.0
 
July 12, 2019, 9 a.m. 23.3 ppb (22) 2.0 ppb (2) 19.8 ppb (18) 21.0 ppb (19) 19.0 ppb (18) 1.0 ppb (1) 6.0 ppb (5) N/A 20.0 μg/m3 (18) 11.0 μg/m3 (46) 46.0
 
July 12, 2019, 8 a.m. 20.4 ppb (19) 1.6 ppb (1) 18.0 ppb (17) 19.0 ppb (18) 17.8 ppb (16) 1.0 ppb (1) 10.0 ppb (8) N/A 22.0 μg/m3 (20) 13.0 μg/m3 (52) 52.0
 
July 12, 2019, 7 a.m. 20.3 ppb (19) 1.6 ppb (1) 19.3 ppb (18) 19.0 ppb (18) 18.8 ppb (17) 1.0 ppb (1) 11.0 ppb (8) N/A 23.0 μg/m3 (21) 12.0 μg/m3 (50) 50.0
 
July 12, 2019, 6 a.m. 22.9 ppb (21) 2.8 ppb (3) 22.6 ppb (21) 20.0 ppb (19) 21.0 ppb (19) 1.0 ppb (1) 10.0 ppb (8) N/A 24.0 μg/m3 (22) 12.0 μg/m3 (50) 50.0
 
July 12, 2019, 5 a.m. 24.7 ppb (23) 1.7 ppb (2) 23.7 ppb (22) 23.0 ppb (21) 22.9 ppb (21) 1.0 ppb (1) 9.0 ppb (7) N/A 21.0 μg/m3 (19) 13.0 μg/m3 (52) 52.0
 
July 12, 2019, 4 a.m. 14.3 ppb (13) 1.1 ppb (1) 12.9 ppb (12) 13.0 ppb (12) 12.4 ppb (11) 0.0 ppb (0) 19.0 ppb (15) N/A 23.0 μg/m3 (21) 15.0 μg/m3 (56) 56.0
 
July 12, 2019, 3 a.m. 11.4 ppb (11) 0.4 ppb (0) 10.2 ppb (9) 11.0 ppb (10) 10.0 ppb (9) 0.0 ppb (0) 29.0 ppb (22) N/A 26.0 μg/m3 (24) 16.0 μg/m3 (59) 59.0
 
July 12, 2019, 2 a.m. 9.3 ppb (9) 0.3 ppb (0) 8.7 ppb (8) 9.0 ppb (8) 8.4 ppb (8) 0.0 ppb (0) 44.0 ppb (34) N/A 38.0 μg/m3 (35) 16.0 μg/m3 (59) 59.0
 
July 12, 2019, 1 a.m. 9.5 ppb (9) 0.8 ppb (1) 8.7 ppb (8) 9.0 ppb (8) 7.8 ppb (7) 0.0 ppb (0) 47.0 ppb (36) N/A 41.0 μg/m3 (37) 18.0 μg/m3 (63) 63.0
 
July 12, 2019, midnight 8.9 ppb (8) 1.0 ppb (1) 8.3 ppb (8) 8.0 ppb (7) 7.2 ppb (7) 0.0 ppb (0) 51.0 ppb (39) N/A 34.0 μg/m3 (31) 18.0 μg/m3 (63) 63.0
 
July 11, 2019, 11 p.m. 8.9 ppb (8) 1.2 ppb (1) 8.2 ppb (8) 8.0 ppb (7) 6.9 ppb (6) 1.0 ppb (1) 49.0 ppb (38) N/A 34.0 μg/m3 (31) 17.0 μg/m3 (61) 61.0
 
July 11, 2019, 10 p.m. 8.6 ppb (8) 1.2 ppb (1) 7.9 ppb (7) 7.0 ppb (6) 6.6 ppb (6) 1.0 ppb (1) 49.0 ppb (38) N/A 43.0 μg/m3 (39) 21.0 μg/m3 (69) 69.0
 
July 11, 2019, 9 p.m. 34.5 ppb (32) 15.3 ppb (14) 26.8 ppb (25) 19.0 ppb (18) 12.7 ppb (12) 1.0 ppb (1) 39.0 ppb (30) N/A 53.0 μg/m3 (48) 24.0 μg/m3 (76) 76.0
 
July 11, 2019, 8 p.m. 20.4 ppb (19) 4.7 ppb (4) 17.0 ppb (16) 16.0 ppb (15) 13.7 ppb (13) 1.0 ppb (1) 45.0 ppb (35) N/A 43.0 μg/m3 (39) 19.0 μg/m3 (65) 65.0
 
July 11, 2019, 7 p.m. 19.8 ppb (18) 3.6 ppb (3) 19.1 ppb (18) 16.0 ppb (15) 16.0 ppb (15) 1.0 ppb (1) 52.0 ppb (40) N/A 44.0 μg/m3 (40) 18.0 μg/m3 (63) 63.0
 
July 11, 2019, 6 p.m. 37.4 ppb (35) 10.0 ppb (9) 35.0 ppb (32) 27.0 ppb (25) 26.0 ppb (24) 1.0 ppb (1) 38.0 ppb (29) N/A 53.0 μg/m3 (48) 23.0 μg/m3 (73) 73.0
 
July 11, 2019, 5 p.m. 59.5 ppb (56) 22.5 ppb (21) 56.8 ppb (53) 37.0 ppb (34) 33.5 ppb (31) 1.0 ppb (1) 21.0 ppb (16) N/A 63.0 μg/m3 (54) 29.0 μg/m3 (86) 86.0
 
July 11, 2019, 4 p.m. 68.0 ppb (65) 34.4 ppb (32) 60.3 ppb (57) 34.0 ppb (31) 30.1 ppb (28) 1.0 ppb (1) 14.0 ppb (11) N/A 61.0 μg/m3 (53) 28.0 μg/m3 (84) 84.0
 
July 11, 2019, 3 p.m. 71.7 ppb (69) 41.2 ppb (38) 66.3 ppb (63) 30.0 ppb (28) 25.4 ppb (24) 1.0 ppb (1) 8.0 ppb (6) N/A 56.0 μg/m3 (50) 24.0 μg/m3 (76) 76.0
 
July 11, 2019, 2 p.m. 67.2 ppb (64) 41.6 ppb (39) 61.5 ppb (58) 26.0 ppb (24) 19.9 ppb (18) 1.0 ppb (1) 5.0 ppb (4) N/A 41.0 μg/m3 (37) 23.0 μg/m3 (73) 73.0
 
July 11, 2019, 1 p.m. 73.9 ppb (71) 46.5 ppb (43) 56.4 ppb (53) 23.0 ppb (21) 11.3 ppb (10) 1.0 ppb (1) 3.0 ppb (2) N/A 41.0 μg/m3 (37) 17.0 μg/m3 (61) 71.0
 
July 11, 2019, noon 59.2 ppb (56) 38.1 ppb (35) 48.4 ppb (45) 21.0 ppb (19) 16.6 ppb (15) 1.0 ppb (1) 2.0 ppb (2) N/A 28.0 μg/m3 (25) 11.0 μg/m3 (46) 56.0
 
July 11, 2019, 11 a.m. 27.9 ppb (26) 7.2 ppb (7) 26.5 ppb (25) 21.0 ppb (19) 15.9 ppb (15) 0.0 ppb (0) 3.0 ppb (2) N/A 24.0 μg/m3 (22) 9.0 μg/m3 (38) 38.0
 
July 11, 2019, 10 a.m. 24.7 ppb (23) 3.5 ppb (3) 23.1 ppb (21) 21.0 ppb (19) 20.7 ppb (19) 1.0 ppb (1) 4.0 ppb (3) N/A 27.0 μg/m3 (25) 15.0 μg/m3 (56) 56.0
 
July 11, 2019, 9 a.m. 37.1 ppb (34) 10.4 ppb (10) 28.9 ppb (27) 27.0 ppb (25) 21.4 ppb (20) 1.0 ppb (1) 2.0 ppb (2) N/A 23.0 μg/m3 (21) 15.0 μg/m3 (56) 56.0
 
July 11, 2019, 8 a.m. 33.6 ppb (31) 6.9 ppb (6) 28.7 ppb (27) 27.0 ppb (25) 25.1 ppb (23) 0.0 ppb (0) 3.0 ppb (2) N/A 24.0 μg/m3 (22) 13.0 μg/m3 (52) 52.0