AQSQID: 060371103

Site Name: Los Angeles - N. Main Street

Location: LA (Chavez Ravine Place), CA

Reporting: True, Located: True

Current AQI: 54.0

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
May 25, 2019, 9 p.m. 7.5 ppb (7) 1.3 ppb (1) 8.3 ppb (8) 6.0 ppb (6) 6.7 ppb (6) 0.0 ppb (0) 42.0 ppb (32) 0.2 ppb (2) 24.0 μg/m3 (22) 14.0 μg/m3 (54) 54.0
 
May 25, 2019, 8 p.m. 10.4 ppb (10) 1.9 ppb (2) 11.8 ppb (11) 8.0 ppb (7) 9.6 ppb (9) 0.0 ppb (0) 44.0 ppb (34) 0.24 ppb (3) 30.0 μg/m3 (27) 18.0 μg/m3 (63) 63.0
 
May 25, 2019, 7 p.m. 12.5 ppb (12) 2.9 ppb (3) 14.2 ppb (13) 10.0 ppb (9) 10.9 ppb (10) 0.0 ppb (0) 39.0 ppb (30) 0.25 ppb (3) 29.0 μg/m3 (26) 16.0 μg/m3 (59) 59.0
 
May 25, 2019, 6 p.m. 13.7 ppb (13) 3.6 ppb (3) 15.4 ppb (14) 10.0 ppb (9) 11.4 ppb (11) 0.0 ppb (0) 32.0 ppb (25) 0.24 ppb (3) 32.0 μg/m3 (29) 12.0 μg/m3 (50) 50.0
 
May 25, 2019, 5 p.m. 13.7 ppb (13) 3.5 ppb (3) 15.4 ppb (14) 10.0 ppb (9) 11.7 ppb (11) 0.0 ppb (0) 28.0 ppb (22) 0.25 ppb (3) 22.0 μg/m3 (20) 10.0 μg/m3 (42) 42.0
 
May 25, 2019, 4 p.m. 23.7 ppb (22) 7.9 ppb (7) 25.1 ppb (23) 16.0 ppb (15) 16.8 ppb (16) 0.0 ppb (0) 21.0 ppb (16) 0.32 ppb (4) 30.0 μg/m3 (27) 16.0 μg/m3 (59) 59.0
 
May 25, 2019, 3 p.m. 36.2 ppb (34) 14.8 ppb (14) 36.7 ppb (34) 21.0 ppb (19) 21.2 ppb (20) 1.0 ppb (1) 13.0 ppb (10) 0.35 ppb (4) 33.0 μg/m3 (30) 21.0 μg/m3 (69) 69.0
 
May 25, 2019, 2 p.m. 33.6 ppb (31) 14.1 ppb (13) 34.6 ppb (32) 19.0 ppb (18) 18.8 ppb (17) 0.0 ppb (0) 10.0 ppb (8) 0.38 ppb (4) 38.0 μg/m3 (35) 18.0 μg/m3 (63) 63.0
 
May 25, 2019, 1 p.m. 49.7 ppb (46) 29.8 ppb (28) 42.7 ppb (40) 20.0 ppb (19) 14.5 ppb (13) 0.0 ppb (0) 2.0 ppb (2) 0.55 ppb (6) 30.0 μg/m3 (27) 17.0 μg/m3 (61) 61.0
 
May 25, 2019, noon 35.8 ppb (33) 15.6 ppb (14) 31.2 ppb (29) 20.0 ppb (19) 20.4 ppb (19) 0.0 ppb (0) 1.0 ppb (1) 0.52 ppb (6) 23.0 μg/m3 (21) 9.0 μg/m3 (38) 38.0
 
May 25, 2019, 11 a.m. 26.7 ppb (25) 6.4 ppb (6) 23.9 ppb (22) 20.0 ppb (19) 18.7 ppb (17) 0.0 ppb (0) 3.0 ppb (2) 0.39 ppb (4) 21.0 μg/m3 (19) 10.0 μg/m3 (42) 42.0
 
May 25, 2019, 10 a.m. 22.8 ppb (21) 2.3 ppb (2) 22.7 ppb (21) 20.0 ppb (19) 21.7 ppb (20) 0.0 ppb (0) 5.0 ppb (4) 0.35 ppb (4) 20.0 μg/m3 (18) 10.0 μg/m3 (42) 42.0
 
May 25, 2019, 9 a.m. 24.2 ppb (22) 2.1 ppb (2) 21.9 ppb (20) 22.0 ppb (20) 21.0 ppb (19) 0.0 ppb (0) 6.0 ppb (5) 0.28 ppb (3) 21.0 μg/m3 (19) 7.0 μg/m3 (29) 29.0
 
May 25, 2019, 8 a.m. 15.0 ppb (14) 1.0 ppb (1) 15.1 ppb (14) 14.0 ppb (13) 14.4 ppb (13) 0.0 ppb (0) 18.0 ppb (14) 0.18 ppb (2) 31.0 μg/m3 (28) 8.0 μg/m3 (33) 33.0
 
May 25, 2019, 7 a.m. 14.0 ppb (13) 0.5 ppb (0) 14.4 ppb (13) 13.0 ppb (12) 14.3 ppb (13) 0.0 ppb (0) 18.0 ppb (14) 0.24 ppb (3) 20.0 μg/m3 (18) 7.0 μg/m3 (29) 29.0
 
May 25, 2019, 6 a.m. 19.6 ppb (18) 0.8 ppb (1) 20.7 ppb (19) 19.0 ppb (18) 20.4 ppb (19) 0.0 ppb (0) 18.0 ppb (14) 0.23 ppb (3) 17.0 μg/m3 (15) 10.0 μg/m3 (42) 42.0
 
May 25, 2019, 5 a.m. 17.0 ppb (16) 0.7 ppb (1) 18.3 ppb (17) 16.0 ppb (15) 17.8 ppb (16) 0.0 ppb (0) 20.0 ppb (15) 0.21 ppb (2) 20.0 μg/m3 (18) 5.0 μg/m3 (21) 21.0
 
May 25, 2019, 4 a.m. 15.3 ppb (14) 0.8 ppb (1) 15.7 ppb (15) 15.0 ppb (14) 15.0 ppb (14) 0.0 ppb (0) 21.0 ppb (16) 0.22 ppb (2) 23.0 μg/m3 (21) 5.0 μg/m3 (21) 21.0
 
May 25, 2019, 3 a.m. 11.1 ppb (10) 0.5 ppb (0) 11.6 ppb (11) 11.0 ppb (10) 10.7 ppb (10) 0.0 ppb (0) 26.0 ppb (20) 0.18 ppb (2) 19.0 μg/m3 (17) 4.0 μg/m3 (17) 20.0
 
May 25, 2019, 2 a.m. 6.7 ppb (6) 0.1 ppb (0) 7.1 ppb (7) 7.0 ppb (6) 6.8 ppb (6) 0.0 ppb (0) 32.0 ppb (25) 0.17 ppb (2) 16.0 μg/m3 (15) 6.0 μg/m3 (25) 25.0
 
May 25, 2019, 1 a.m. 5.7 ppb (5) 0.6 ppb (1) 6.1 ppb (6) 5.0 ppb (5) 5.2 ppb (5) 0.0 ppb (0) 35.0 ppb (27) 0.19 ppb (2) 14.0 μg/m3 (13) 9.0 μg/m3 (38) 38.0
 
May 25, 2019, midnight 5.1 ppb (5) 0.8 ppb (1) 5.7 ppb (5) 4.0 ppb (4) 4.6 ppb (4) 0.0 ppb (0) 36.0 ppb (28) 0.18 ppb (2) 14.0 μg/m3 (13) 8.0 μg/m3 (33) 33.0
 
May 24, 2019, 11 p.m. 6.3 ppb (6) 1.2 ppb (1) 6.8 ppb (6) 5.0 ppb (5) 5.3 ppb (5) 0.0 ppb (0) 37.0 ppb (28) 0.19 ppb (2) 18.0 μg/m3 (16) 6.0 μg/m3 (25) 28.0
 
May 24, 2019, 10 p.m. 6.8 ppb (6) 1.4 ppb (1) 7.4 ppb (7) 5.0 ppb (5) 5.6 ppb (5) 0.0 ppb (0) 38.0 ppb (29) 0.19 ppb (2) 21.0 μg/m3 (19) 7.0 μg/m3 (29) 29.0
 
May 24, 2019, 9 p.m. 8.3 ppb (8) 2.0 ppb (2) 8.9 ppb (8) 6.0 ppb (6) 6.4 ppb (6) 0.0 ppb (0) 37.0 ppb (28) 0.2 ppb (2) 19.0 μg/m3 (17) 8.0 μg/m3 (33) 33.0
 
May 24, 2019, 8 p.m. 7.6 ppb (7) 1.8 ppb (2) 8.4 ppb (8) 6.0 ppb (6) 6.3 ppb (6) 0.0 ppb (0) 37.0 ppb (28) 0.2 ppb (2) 21.0 μg/m3 (19) 9.0 μg/m3 (38) 38.0
 
May 24, 2019, 7 p.m. 9.6 ppb (9) 2.3 ppb (2) 10.4 ppb (10) 7.0 ppb (6) 7.8 ppb (7) 0.0 ppb (0) 36.0 ppb (28) 0.21 ppb (2) 27.0 μg/m3 (25) 10.0 μg/m3 (42) 42.0
 
May 24, 2019, 6 p.m. 14.5 ppb (13) 4.2 ppb (4) 15.5 ppb (14) 10.0 ppb (9) 10.9 ppb (10) 0.0 ppb (0) 33.0 ppb (25) 0.28 ppb (3) 26.0 μg/m3 (24) 12.0 μg/m3 (50) 50.0
 
May 24, 2019, 5 p.m. 24.3 ppb (23) 8.7 ppb (8) 24.3 ppb (23) 16.0 ppb (15) 15.4 ppb (14) 0.0 ppb (0) 26.0 ppb (20) 0.38 ppb (4) 28.0 μg/m3 (25) 13.0 μg/m3 (52) 52.0
 
May 24, 2019, 4 p.m. N/A N/A 37.7 ppb (35) N/A 19.0 ppb (18) N/A N/A N/A 32.0 μg/m3 (29) 15.0 μg/m3 (56) 56.0
 
May 24, 2019, 3 p.m. N/A N/A 30.7 ppb (28) N/A 14.6 ppb (14) N/A N/A N/A 28.0 μg/m3 (25) 17.0 μg/m3 (61) 61.0
 
May 24, 2019, 2 p.m. 39.4 ppb (36) 20.9 ppb (19) 37.3 ppb (35) 18.0 ppb (17) 16.2 ppb (15) 0.0 ppb (0) 7.0 ppb (5) 0.41 ppb (5) 22.0 μg/m3 (20) 12.0 μg/m3 (50) 50.0
 
May 24, 2019, 1 p.m. 54.0 ppb (50) 35.5 ppb (33) 45.4 ppb (42) 18.0 ppb (17) 12.4 ppb (11) 0.0 ppb (0) 2.0 ppb (2) 0.6 ppb (7) 25.0 μg/m3 (23) 13.0 μg/m3 (52) 52.0
 
May 24, 2019, noon 49.6 ppb (46) 29.7 ppb (28) 41.3 ppb (38) 20.0 ppb (19) 19.8 ppb (18) 0.0 ppb (0) 1.0 ppb (1) 0.49 ppb (5) 27.0 μg/m3 (25) 12.0 μg/m3 (50) 50.0
 
May 24, 2019, 11 a.m. 37.9 ppb (35) 18.7 ppb (17) 33.5 ppb (31) 19.0 ppb (18) 17.0 ppb (16) 0.0 ppb (0) 1.0 ppb (1) 0.42 ppb (5) 23.0 μg/m3 (21) 16.0 μg/m3 (59) 59.0
 
May 24, 2019, 10 a.m. 36.4 ppb (34) 17.9 ppb (17) 34.5 ppb (32) 18.0 ppb (17) 18.8 ppb (17) 0.0 ppb (0) 1.0 ppb (1) 0.45 ppb (5) 22.0 μg/m3 (20) 9.0 μg/m3 (38) 38.0
 
May 24, 2019, 9 a.m. 38.7 ppb (36) 19.8 ppb (18) 32.5 ppb (30) 19.0 ppb (18) 17.0 ppb (16) 0.0 ppb (0) 1.0 ppb (1) 0.51 ppb (6) 24.0 μg/m3 (22) 13.0 μg/m3 (52) 52.0
 
May 24, 2019, 8 a.m. 43.8 ppb (41) 23.9 ppb (22) 46.5 ppb (43) 20.0 ppb (19) 21.8 ppb (20) 0.0 ppb (0) 1.0 ppb (1) 0.58 ppb (6) 25.0 μg/m3 (23) 16.0 μg/m3 (59) 59.0
 
May 24, 2019, 7 a.m. 39.5 ppb (37) 14.4 ppb (13) 44.4 ppb (41) 25.0 ppb (23) 26.1 ppb (24) 0.0 ppb (0) 1.0 ppb (1) 0.53 ppb (6) 40.0 μg/m3 (36) 12.0 μg/m3 (50) 50.0
 
May 24, 2019, 6 a.m. 21.8 ppb (20) 2.4 ppb (2) 22.6 ppb (21) 19.0 ppb (18) 21.0 ppb (19) 0.0 ppb (0) 9.0 ppb (7) 0.4 ppb (4) 40.0 μg/m3 (36) 15.0 μg/m3 (56) 56.0
 
May 24, 2019, 5 a.m. 18.2 ppb (17) 1.9 ppb (2) 18.5 ppb (17) 16.0 ppb (15) 17.6 ppb (16) 0.0 ppb (0) 13.0 ppb (10) 0.37 ppb (4) 67.0 μg/m3 (56) 11.0 μg/m3 (46) 56.0
 
May 24, 2019, 4 a.m. 11.7 ppb (11) 0.4 ppb (0) 12.9 ppb (12) 11.0 ppb (10) 12.7 ppb (12) 0.0 ppb (0) 19.0 ppb (15) 0.27 ppb (3) 56.0 μg/m3 (50) 8.0 μg/m3 (33) 50.0
 
May 24, 2019, 3 a.m. 14.0 ppb (13) 0.8 ppb (1) 14.4 ppb (13) 13.0 ppb (12) 14.0 ppb (13) 0.0 ppb (0) 17.0 ppb (13) 0.28 ppb (3) 46.0 μg/m3 (42) 9.0 μg/m3 (38) 42.0
 
May 24, 2019, 2 a.m. 11.3 ppb (10) 0.5 ppb (0) 12.1 ppb (11) 11.0 ppb (10) 11.7 ppb (11) 0.0 ppb (0) 22.0 ppb (17) 0.22 ppb (2) 27.0 μg/m3 (25) 10.0 μg/m3 (42) 42.0
 
May 24, 2019, 1 a.m. 16.3 ppb (15) 1.0 ppb (1) 16.8 ppb (16) 15.0 ppb (14) 16.0 ppb (15) 0.0 ppb (0) 20.0 ppb (15) 0.26 ppb (3) 34.0 μg/m3 (31) 10.0 μg/m3 (42) 42.0
 
May 24, 2019, midnight 18.9 ppb (18) 3.0 ppb (3) 19.5 ppb (18) 16.0 ppb (15) 16.2 ppb (15) 0.0 ppb (0) 20.0 ppb (15) 0.26 ppb (3) 24.0 μg/m3 (22) 11.0 μg/m3 (46) 46.0
 
May 23, 2019, 11 p.m. 11.1 ppb (10) 0.9 ppb (1) 11.8 ppb (11) 10.0 ppb (9) 10.8 ppb (10) 0.0 ppb (0) 26.0 ppb (20) 0.18 ppb (2) 22.0 μg/m3 (20) 13.0 μg/m3 (52) 52.0
 
May 23, 2019, 10 p.m. 13.1 ppb (12) 2.6 ppb (2) 13.0 ppb (12) 11.0 ppb (10) 10.5 ppb (10) 0.0 ppb (0) 27.0 ppb (21) 0.2 ppb (2) 33.0 μg/m3 (30) 10.0 μg/m3 (42) 42.0
 
May 23, 2019, 9 p.m. 17.5 ppb (16) 2.0 ppb (2) 17.5 ppb (16) 15.0 ppb (14) 15.6 ppb (14) 0.0 ppb (0) 25.0 ppb (19) 0.22 ppb (2) 30.0 μg/m3 (27) 11.0 μg/m3 (46) 46.0
 
May 23, 2019, 8 p.m. 15.7 ppb (15) 1.5 ppb (1) 15.6 ppb (14) 14.0 ppb (13) 14.1 ppb (13) 0.0 ppb (0) 21.0 ppb (16) 0.25 ppb (3) 31.0 μg/m3 (28) 10.0 μg/m3 (42) 42.0
 
May 23, 2019, 7 p.m. N/A N/A 14.4 ppb (13) N/A 11.3 ppb (10) N/A N/A N/A 47.0 μg/m3 (43) 15.0 μg/m3 (56) 56.0
 
May 23, 2019, 6 p.m. N/A N/A 14.8 ppb (14) N/A 9.2 ppb (9) N/A N/A N/A 48.0 μg/m3 (44) 17.0 μg/m3 (61) 61.0
 
May 23, 2019, 5 p.m. N/A N/A 27.2 ppb (25) N/A 15.8 ppb (15) N/A N/A N/A 34.0 μg/m3 (31) 13.0 μg/m3 (52) 52.0
 
May 23, 2019, 4 p.m. 26.2 ppb (24) 8.4 ppb (8) 24.2 ppb (22) 18.0 ppb (17) 16.7 ppb (15) 0.0 ppb (0) 19.0 ppb (15) 0.21 ppb (2) 79.0 μg/m3 (62) 17.0 μg/m3 (61) 62.0
 
May 23, 2019, 3 p.m. 28.9 ppb (27) 7.1 ppb (7) 25.7 ppb (24) 22.0 ppb (20) 19.3 ppb (18) 0.0 ppb (0) 17.0 ppb (13) 0.22 ppb (2) 30.0 μg/m3 (27) 14.0 μg/m3 (54) 54.0
 
May 23, 2019, 2 p.m. 27.5 ppb (25) 5.3 ppb (5) 26.1 ppb (24) 22.0 ppb (20) 21.1 ppb (20) 0.0 ppb (0) 16.0 ppb (12) 0.26 ppb (3) 47.0 μg/m3 (43) 12.0 μg/m3 (50) 50.0
 
May 23, 2019, 1 p.m. 29.1 ppb (27) 5.9 ppb (5) 24.0 ppb (22) 23.0 ppb (21) 18.5 ppb (17) 0.0 ppb (0) 14.0 ppb (11) 0.26 ppb (3) 34.0 μg/m3 (31) 14.0 μg/m3 (54) 54.0
 
May 23, 2019, noon 27.1 ppb (25) 3.9 ppb (4) 24.7 ppb (23) 23.0 ppb (21) 21.7 ppb (20) 0.0 ppb (0) 12.0 ppb (9) 0.28 ppb (3) 27.0 μg/m3 (25) 15.0 μg/m3 (56) 56.0
 
May 23, 2019, 11 a.m. 17.4 ppb (16) 1.2 ppb (1) 18.3 ppb (17) 16.0 ppb (15) 17.0 ppb (16) 0.0 ppb (0) 15.0 ppb (12) 0.24 ppb (3) 21.0 μg/m3 (19) 11.0 μg/m3 (46) 46.0
 
May 23, 2019, 10 a.m. 11.0 ppb (10) 0.4 ppb (0) 10.9 ppb (10) 11.0 ppb (10) 10.5 ppb (10) 0.0 ppb (0) 23.0 ppb (18) 0.18 ppb (2) 19.0 μg/m3 (17) 8.0 μg/m3 (33) 33.0
 
May 23, 2019, 9 a.m. 16.6 ppb (15) 1.6 ppb (1) 13.7 ppb (13) 15.0 ppb (14) 12.3 ppb (11) 0.0 ppb (0) 17.0 ppb (13) 0.22 ppb (2) 14.0 μg/m3 (13) 9.0 μg/m3 (38) 38.0
 
May 23, 2019, 8 a.m. 17.4 ppb (16) 0.4 ppb (0) 18.7 ppb (17) 17.0 ppb (16) 18.0 ppb (17) 0.0 ppb (0) 15.0 ppb (12) 0.25 ppb (3) 14.0 μg/m3 (13) 7.0 μg/m3 (29) 29.0
 
May 23, 2019, 7 a.m. 19.8 ppb (18) 1.1 ppb (1) 19.2 ppb (18) 19.0 ppb (18) 18.4 ppb (17) 0.0 ppb (0) 18.0 ppb (14) 0.23 ppb (3) 16.0 μg/m3 (15) 8.0 μg/m3 (33) 33.0
 
May 23, 2019, 6 a.m. 16.4 ppb (15) 0.2 ppb (0) 17.0 ppb (16) 16.0 ppb (15) 16.9 ppb (16) 0.0 ppb (0) 23.0 ppb (18) 0.24 ppb (3) 10.0 μg/m3 (9) 6.0 μg/m3 (25) 25.0
 
May 23, 2019, 5 a.m. 18.1 ppb (17) 0.3 ppb (0) 18.2 ppb (17) 18.0 ppb (17) 18.1 ppb (17) 0.0 ppb (0) 25.0 ppb (19) 0.21 ppb (2) 11.0 μg/m3 (10) 7.0 μg/m3 (29) 29.0
 
May 23, 2019, 4 a.m. 28.6 ppb (26) 8.1 ppb (8) 34.7 ppb (32) 19.0 ppb (18) 26.0 ppb (24) 0.0 ppb (0) 25.0 ppb (19) 0.23 ppb (3) 13.0 μg/m3 (12) 4.0 μg/m3 (17) 32.0
 
May 23, 2019, 3 a.m. 21.6 ppb (20) 3.6 ppb (3) 21.0 ppb (19) 18.0 ppb (17) 16.7 ppb (15) 0.0 ppb (0) 26.0 ppb (20) 0.2 ppb (2) 18.0 μg/m3 (16) 6.0 μg/m3 (25) 25.0
 
May 23, 2019, 2 a.m. 14.8 ppb (14) 0.7 ppb (1) 14.8 ppb (14) 14.0 ppb (13) 14.0 ppb (13) 0.0 ppb (0) 33.0 ppb (25) 0.2 ppb (2) 12.0 μg/m3 (11) 4.0 μg/m3 (17) 25.0
 
May 23, 2019, 1 a.m. 12.3 ppb (11) 1.5 ppb (1) 12.8 ppb (12) 11.0 ppb (10) 11.0 ppb (10) 0.0 ppb (0) 35.0 ppb (27) 0.2 ppb (2) 12.0 μg/m3 (11) 5.0 μg/m3 (21) 27.0
 
May 23, 2019, midnight 12.8 ppb (12) 2.2 ppb (2) 12.6 ppb (12) 11.0 ppb (10) 10.1 ppb (9) 0.0 ppb (0) 34.0 ppb (26) 0.2 ppb (2) 9.0 μg/m3 (8) 7.0 μg/m3 (29) 29.0
 
May 22, 2019, 11 p.m. 8.6 ppb (8) 1.5 ppb (1) 9.0 ppb (8) 7.0 ppb (6) 7.1 ppb (7) 0.0 ppb (0) 40.0 ppb (31) 0.16 ppb (2) 9.0 μg/m3 (8) 5.0 μg/m3 (21) 31.0
 
May 22, 2019, 10 p.m. 9.9 ppb (9) 1.6 ppb (1) 9.6 ppb (9) 8.0 ppb (7) 8.0 ppb (7) 0.0 ppb (0) 35.0 ppb (27) 0.18 ppb (2) 12.0 μg/m3 (11) 6.0 μg/m3 (25) 27.0
 
May 22, 2019, 9 p.m. 6.7 ppb (6) 0.9 ppb (1) 6.7 ppb (6) 6.0 ppb (6) 5.6 ppb (5) 0.0 ppb (0) 39.0 ppb (30) 0.16 ppb (2) 22.0 μg/m3 (20) 6.0 μg/m3 (25) 30.0
 
May 22, 2019, 8 p.m. 5.7 ppb (5) 1.2 ppb (1) 6.4 ppb (6) 4.0 ppb (4) 4.9 ppb (5) 0.0 ppb (0) 41.0 ppb (32) 0.15 ppb (2) 16.0 μg/m3 (15) 6.0 μg/m3 (25) 32.0
 
May 22, 2019, 7 p.m. 8.1 ppb (8) 2.0 ppb (2) 8.6 ppb (8) 6.0 ppb (6) 6.3 ppb (6) 0.0 ppb (0) 37.0 ppb (28) 0.17 ppb (2) 20.0 μg/m3 (18) 5.0 μg/m3 (21) 28.0
 
May 22, 2019, 6 p.m. 11.8 ppb (11) 3.2 ppb (3) 11.8 ppb (11) 9.0 ppb (8) 8.2 ppb (8) 0.0 ppb (0) 34.0 ppb (26) 0.19 ppb (2) 19.0 μg/m3 (17) 7.0 μg/m3 (29) 29.0
 
May 22, 2019, 5 p.m. 17.5 ppb (16) 5.2 ppb (5) 16.9 ppb (16) 12.0 ppb (11) 11.4 ppb (11) 0.0 ppb (0) 28.0 ppb (22) 0.24 ppb (3) 26.0 μg/m3 (24) 10.0 μg/m3 (42) 42.0
 
May 22, 2019, 4 p.m. 21.7 ppb (20) 7.7 ppb (7) 21.4 ppb (20) 14.0 ppb (13) 13.4 ppb (12) 0.0 ppb (0) 24.0 ppb (18) 0.27 ppb (3) 26.0 μg/m3 (24) 11.0 μg/m3 (46) 46.0
 
May 22, 2019, 3 p.m. 24.3 ppb (23) 9.6 ppb (9) 22.6 ppb (21) 15.0 ppb (14) 12.4 ppb (11) 0.0 ppb (0) 21.0 ppb (16) 0.24 ppb (3) 48.0 μg/m3 (44) 19.0 μg/m3 (65) 65.0
 
May 22, 2019, 2 p.m. 31.5 ppb (29) 12.1 ppb (11) 28.1 ppb (26) 19.0 ppb (18) 15.5 ppb (14) 0.0 ppb (0) 15.0 ppb (12) 0.28 ppb (3) 51.0 μg/m3 (46) 13.0 μg/m3 (52) 52.0
 
May 22, 2019, 1 p.m. 25.3 ppb (23) 6.2 ppb (6) 21.4 ppb (20) 19.0 ppb (18) 15.6 ppb (14) 0.0 ppb (0) 13.0 ppb (10) 0.29 ppb (3) 28.0 μg/m3 (25) 8.0 μg/m3 (33) 33.0
 
May 22, 2019, noon 18.8 ppb (17) 2.2 ppb (2) 16.5 ppb (15) 17.0 ppb (16) 14.7 ppb (14) 0.0 ppb (0) 14.0 ppb (11) 0.25 ppb (3) 28.0 μg/m3 (25) 11.0 μg/m3 (46) 46.0
 
May 22, 2019, 11 a.m. 17.6 ppb (16) 1.6 ppb (1) 15.0 ppb (14) 16.0 ppb (15) 14.1 ppb (13) 0.0 ppb (0) 14.0 ppb (11) 0.2 ppb (2) 31.0 μg/m3 (28) 11.0 μg/m3 (46) 46.0
 
May 22, 2019, 10 a.m. 10.3 ppb (10) 0.2 ppb (0) 9.9 ppb (9) 10.0 ppb (9) 9.8 ppb (9) 0.0 ppb (0) 21.0 ppb (16) 0.16 ppb (2) 29.0 μg/m3 (26) 14.0 μg/m3 (54) 54.0
 
May 22, 2019, 9 a.m. 18.7 ppb (17) 1.8 ppb (2) 13.7 ppb (13) 17.0 ppb (16) 13.0 ppb (12) 0.0 ppb (0) 16.0 ppb (12) 0.19 ppb (2) 33.0 μg/m3 (30) 11.0 μg/m3 (46) 46.0
 
May 22, 2019, 8 a.m. 12.2 ppb (11) 0.6 ppb (1) 11.9 ppb (11) 12.0 ppb (11) 11.6 ppb (11) 0.0 ppb (0) 23.0 ppb (18) 0.22 ppb (2) 22.0 μg/m3 (20) 10.0 μg/m3 (42) 42.0
 
May 22, 2019, 7 a.m. 10.9 ppb (10) 0.4 ppb (0) 11.0 ppb (10) 10.0 ppb (9) 10.5 ppb (10) 0.0 ppb (0) 24.0 ppb (18) 0.15 ppb (2) 26.0 μg/m3 (24) 6.0 μg/m3 (25) 25.0
 
May 22, 2019, 6 a.m. 9.6 ppb (9) 0.3 ppb (0) 9.7 ppb (9) 9.0 ppb (8) 9.4 ppb (9) 0.0 ppb (0) 26.0 ppb (20) 0.17 ppb (2) 27.0 μg/m3 (25) 7.0 μg/m3 (29) 29.0
 
May 22, 2019, 5 a.m. 19.0 ppb (18) 6.3 ppb (6) 17.5 ppb (16) 13.0 ppb (12) 14.3 ppb (13) 0.0 ppb (0) 24.0 ppb (18) 0.18 ppb (2) 28.0 μg/m3 (25) 11.0 μg/m3 (46) 46.0
 
May 22, 2019, 4 a.m. 15.8 ppb (15) 1.2 ppb (1) 15.7 ppb (15) 15.0 ppb (14) 13.7 ppb (13) 0.0 ppb (0) 23.0 ppb (18) 0.21 ppb (2) 34.0 μg/m3 (31) 11.0 μg/m3 (46) 46.0
 
May 22, 2019, 3 a.m. 18.4 ppb (17) 1.1 ppb (1) 18.3 ppb (17) 17.0 ppb (16) 17.2 ppb (16) 0.0 ppb (0) 22.0 ppb (17) 0.21 ppb (2) 32.0 μg/m3 (29) 9.0 μg/m3 (38) 38.0
 
May 22, 2019, 2 a.m. 10.9 ppb (10) 0.5 ppb (0) 10.7 ppb (10) 10.0 ppb (9) 9.3 ppb (9) 0.0 ppb (0) 29.0 ppb (22) 0.19 ppb (2) 38.0 μg/m3 (35) 9.0 μg/m3 (38) 38.0
 
May 22, 2019, 1 a.m. 7.8 ppb (7) 0.8 ppb (1) 7.9 ppb (7) 7.0 ppb (6) 6.8 ppb (6) 0.0 ppb (0) 35.0 ppb (27) 0.16 ppb (2) 29.0 μg/m3 (26) 8.0 μg/m3 (33) 33.0
 
May 22, 2019, midnight 4.7 ppb (4) 0.2 ppb (0) 5.1 ppb (5) 4.0 ppb (4) 4.6 ppb (4) 0.0 ppb (0) 38.0 ppb (29) 0.15 ppb (2) 27.0 μg/m3 (25) 9.0 μg/m3 (38) 38.0
 
May 21, 2019, 11 p.m. 4.9 ppb (5) 0.6 ppb (1) 5.0 ppb (5) 4.0 ppb (4) 4.1 ppb (4) 0.0 ppb (0) 39.0 ppb (30) 0.15 ppb (2) 31.0 μg/m3 (28) 7.0 μg/m3 (29) 30.0
 
May 21, 2019, 10 p.m. 4.3 ppb (4) 0.8 ppb (1) 4.6 ppb (4) 3.0 ppb (3) 3.6 ppb (3) 0.0 ppb (0) 40.0 ppb (31) 0.14 ppb (2) 29.0 μg/m3 (26) 8.0 μg/m3 (33) 33.0
 
May 21, 2019, 9 p.m. 4.0 ppb (4) 0.8 ppb (1) 4.3 ppb (4) 3.0 ppb (3) 3.2 ppb (3) 0.0 ppb (0) 41.0 ppb (32) 0.14 ppb (2) 29.0 μg/m3 (26) 7.0 μg/m3 (29) 32.0
 
May 21, 2019, 8 p.m. 5.1 ppb (5) 1.3 ppb (1) 5.3 ppb (5) 4.0 ppb (4) 3.7 ppb (3) 0.0 ppb (0) 38.0 ppb (29) 0.14 ppb (2) 22.0 μg/m3 (20) 7.0 μg/m3 (29) 29.0
 
May 21, 2019, 7 p.m. 5.7 ppb (5) 1.2 ppb (1) 6.2 ppb (6) 4.0 ppb (4) 4.5 ppb (4) 0.0 ppb (0) 40.0 ppb (31) 0.14 ppb (2) 24.0 μg/m3 (22) 9.0 μg/m3 (38) 38.0
 
May 21, 2019, 6 p.m. 7.1 ppb (7) 1.2 ppb (1) 7.3 ppb (7) 6.0 ppb (6) 5.8 ppb (5) 0.0 ppb (0) 40.0 ppb (31) 0.15 ppb (2) 27.0 μg/m3 (25) 14.0 μg/m3 (54) 54.0
 
May 21, 2019, 5 p.m. 14.8 ppb (14) 4.0 ppb (4) 14.4 ppb (13) 11.0 ppb (10) 9.5 ppb (9) 0.0 ppb (0) 33.0 ppb (25) 0.19 ppb (2) 27.0 μg/m3 (25) 9.0 μg/m3 (38) 38.0
 
May 21, 2019, 4 p.m. 19.3 ppb (18) 4.8 ppb (4) 18.8 ppb (17) 15.0 ppb (14) 13.1 ppb (12) 0.0 ppb (0) 28.0 ppb (22) 0.2 ppb (2) 28.0 μg/m3 (25) 14.0 μg/m3 (54) 54.0
 
May 21, 2019, 3 p.m. 20.6 ppb (19) 5.5 ppb (5) 19.4 ppb (18) 15.0 ppb (14) 13.4 ppb (12) 0.0 ppb (0) 27.0 ppb (21) 0.2 ppb (2) 26.0 μg/m3 (24) 9.0 μg/m3 (38) 38.0
 
May 21, 2019, 2 p.m. 16.0 ppb (15) 2.2 ppb (2) 14.2 ppb (13) 14.0 ppb (13) 12.1 ppb (11) 0.0 ppb (0) 29.0 ppb (22) 0.19 ppb (2) 28.0 μg/m3 (25) 7.0 μg/m3 (29) 29.0
 
May 21, 2019, 1 p.m. 15.1 ppb (14) 1.1 ppb (1) 13.2 ppb (12) 14.0 ppb (13) 12.1 ppb (11) 0.0 ppb (0) 28.0 ppb (22) 0.17 ppb (2) 28.0 μg/m3 (25) 8.0 μg/m3 (33) 33.0
 
May 21, 2019, noon 12.6 ppb (12) 0.8 ppb (1) 11.2 ppb (10) 12.0 ppb (11) 10.5 ppb (10) 0.0 ppb (0) 30.0 ppb (23) 0.16 ppb (2) 33.0 μg/m3 (30) 8.0 μg/m3 (33) 33.0
 
May 21, 2019, 11 a.m. 11.9 ppb (11) 0.3 ppb (0) 10.4 ppb (10) 12.0 ppb (11) 10.3 ppb (10) 0.0 ppb (0) 28.0 ppb (22) 0.16 ppb (2) 26.0 μg/m3 (24) 7.0 μg/m3 (29) 29.0
 
May 21, 2019, 10 a.m. 10.4 ppb (10) 0.2 ppb (0) 9.3 ppb (9) 10.0 ppb (9) 9.3 ppb (9) 0.0 ppb (0) 28.0 ppb (22) 0.15 ppb (2) 29.0 μg/m3 (26) 10.0 μg/m3 (42) 42.0
 
May 21, 2019, 9 a.m. 4.4 ppb (4) -0.1 ppb (0) 5.7 ppb (5) 4.0 ppb (4) 5.7 ppb (5) 0.0 ppb (0) 35.0 ppb (27) 0.11 ppb (1) 21.0 μg/m3 (19) 6.0 μg/m3 (25) 27.0
 
May 21, 2019, 8 a.m. 2.2 ppb (2) -0.2 ppb (0) 3.5 ppb (3) 2.0 ppb (2) 3.5 ppb (3) 0.0 ppb (0) 37.0 ppb (28) 0.11 ppb (1) 19.0 μg/m3 (17) 9.0 μg/m3 (38) 38.0
 
May 21, 2019, 7 a.m. 8.8 ppb (8) 0.0 ppb (0) 8.8 ppb (8) 9.0 ppb (8) 8.8 ppb (8) 0.0 ppb (0) 31.0 ppb (24) 0.13 ppb (1) 29.0 μg/m3 (26) 7.0 μg/m3 (29) 29.0
 
May 21, 2019, 6 a.m. 10.4 ppb (10) 0.0 ppb (0) 10.6 ppb (10) 10.0 ppb (9) 10.3 ppb (10) 0.0 ppb (0) 30.0 ppb (23) 0.15 ppb (2) 23.0 μg/m3 (21) 7.0 μg/m3 (29) 29.0
 
May 21, 2019, 5 a.m. 6.6 ppb (6) 0.0 ppb (0) 7.0 ppb (6) 7.0 ppb (6) 6.9 ppb (6) 0.0 ppb (0) 34.0 ppb (26) 0.14 ppb (2) 33.0 μg/m3 (30) 4.0 μg/m3 (17) 30.0
 
May 21, 2019, 4 a.m. 5.5 ppb (5) -0.1 ppb (0) 5.8 ppb (5) 6.0 ppb (6) 5.8 ppb (5) 0.0 ppb (0) 36.0 ppb (28) 0.16 ppb (2) 24.0 μg/m3 (22) 6.0 μg/m3 (25) 28.0
 
May 21, 2019, 3 a.m. 6.5 ppb (6) -0.1 ppb (0) 6.7 ppb (6) 7.0 ppb (6) 6.6 ppb (6) 0.0 ppb (0) 37.0 ppb (28) 0.14 ppb (2) 17.0 μg/m3 (15) 4.0 μg/m3 (17) 28.0
 
May 21, 2019, 2 a.m. 5.5 ppb (5) -0.1 ppb (0) 5.7 ppb (5) 6.0 ppb (6) 5.6 ppb (5) 0.0 ppb (0) 39.0 ppb (30) 0.14 ppb (2) 19.0 μg/m3 (17) 5.0 μg/m3 (21) 30.0
 
May 21, 2019, 1 a.m. 6.1 ppb (6) 0.2 ppb (0) 6.3 ppb (6) 6.0 ppb (6) 5.8 ppb (5) 0.0 ppb (0) 40.0 ppb (31) 0.15 ppb (2) 15.0 μg/m3 (14) 7.0 μg/m3 (29) 31.0
 
May 21, 2019, midnight 5.9 ppb (5) 0.7 ppb (1) 6.2 ppb (6) 5.0 ppb (5) 5.0 ppb (5) 0.0 ppb (0) 43.0 ppb (33) 0.15 ppb (2) 13.0 μg/m3 (12) 4.0 μg/m3 (17) 33.0
 
May 20, 2019, 11 p.m. 6.7 ppb (6) 1.0 ppb (1) 6.8 ppb (6) 6.0 ppb (6) 5.4 ppb (5) 0.0 ppb (0) 43.0 ppb (33) 0.16 ppb (2) 12.0 μg/m3 (11) 6.0 μg/m3 (25) 33.0
 
May 20, 2019, 10 p.m. 6.4 ppb (6) 1.2 ppb (1) 6.7 ppb (6) 5.0 ppb (5) 5.0 ppb (5) 0.0 ppb (0) 44.0 ppb (34) 0.16 ppb (2) 15.0 μg/m3 (14) 6.0 μg/m3 (25) 34.0
 
May 20, 2019, 9 p.m. 6.5 ppb (6) 1.3 ppb (1) 6.8 ppb (6) 5.0 ppb (5) 5.3 ppb (5) 0.0 ppb (0) 45.0 ppb (35) 0.16 ppb (2) 14.0 μg/m3 (13) 8.0 μg/m3 (33) 35.0
 
May 20, 2019, 8 p.m. 7.4 ppb (7) 1.4 ppb (1) 7.7 ppb (7) 6.0 ppb (6) 6.0 ppb (6) 0.0 ppb (0) 45.0 ppb (35) 0.18 ppb (2) 15.0 μg/m3 (14) 10.0 μg/m3 (42) 42.0
 
May 20, 2019, 7 p.m. 9.2 ppb (9) 1.9 ppb (2) 9.4 ppb (9) 7.0 ppb (6) 6.8 ppb (6) 0.0 ppb (0) 43.0 ppb (33) 0.18 ppb (2) 19.0 μg/m3 (17) 7.0 μg/m3 (29) 33.0
 
May 20, 2019, 6 p.m. 7.1 ppb (7) 1.4 ppb (1) 7.4 ppb (7) 6.0 ppb (6) 5.6 ppb (5) 0.0 ppb (0) 42.0 ppb (32) 0.18 ppb (2) 19.0 μg/m3 (17) 5.0 μg/m3 (21) 32.0
 
May 20, 2019, 5 p.m. 7.3 ppb (7) 1.6 ppb (1) 7.4 ppb (7) 6.0 ppb (6) 5.4 ppb (5) 0.0 ppb (0) 41.0 ppb (32) 0.18 ppb (2) 11.0 μg/m3 (10) 5.0 μg/m3 (21) 32.0
 
May 20, 2019, 4 p.m. 9.8 ppb (9) 2.6 ppb (2) 9.1 ppb (8) 7.0 ppb (6) 6.4 ppb (6) 0.0 ppb (0) 36.0 ppb (28) 0.2 ppb (2) 11.0 μg/m3 (10) 7.0 μg/m3 (29) 29.0
 
May 20, 2019, 3 p.m. 12.8 ppb (12) 3.3 ppb (3) 12.2 ppb (11) 10.0 ppb (9) 8.2 ppb (8) 0.0 ppb (0) 31.0 ppb (24) 0.22 ppb (2) 16.0 μg/m3 (15) 7.0 μg/m3 (29) 29.0
 
May 20, 2019, 2 p.m. 7.0 ppb (6) 1.2 ppb (1) 6.4 ppb (6) 6.0 ppb (6) 5.0 ppb (5) 0.0 ppb (0) 34.0 ppb (26) 0.17 ppb (2) 16.0 μg/m3 (15) 6.0 μg/m3 (25) 26.0
 
May 20, 2019, 1 p.m. 18.9 ppb (18) 3.1 ppb (3) 11.1 ppb (10) 16.0 ppb (15) 9.5 ppb (9) 0.0 ppb (0) 22.0 ppb (17) 0.36 ppb (4) 17.0 μg/m3 (15) 7.0 μg/m3 (29) 29.0
 
May 20, 2019, noon 17.9 ppb (17) 2.7 ppb (3) 11.0 ppb (10) 15.0 ppb (14) 9.3 ppb (9) 0.0 ppb (0) 26.0 ppb (20) 0.31 ppb (3) 12.0 μg/m3 (11) 7.0 μg/m3 (29) 29.0
 
May 20, 2019, 11 a.m. 3.2 ppb (3) -0.1 ppb (0) 3.6 ppb (3) 3.0 ppb (3) 3.5 ppb (3) 0.0 ppb (0) 37.0 ppb (28) 0.14 ppb (2) 12.0 μg/m3 (11) 4.0 μg/m3 (17) 28.0
 
May 20, 2019, 10 a.m. 1.8 ppb (2) -0.2 ppb (0) 1.7 ppb (2) 2.0 ppb (2) 1.7 ppb (2) 0.0 ppb (0) 38.0 ppb (29) 0.13 ppb (1) 12.0 μg/m3 (11) 3.0 μg/m3 (12) 29.0
 
May 20, 2019, 9 a.m. 2.6 ppb (2) -0.2 ppb (0) 2.6 ppb (2) 3.0 ppb (3) 2.6 ppb (2) 0.0 ppb (0) 37.0 ppb (28) 0.12 ppb (1) 10.0 μg/m3 (9) 4.0 μg/m3 (17) 28.0
 
May 20, 2019, 8 a.m. 3.5 ppb (3) -0.1 ppb (0) 3.7 ppb (3) 4.0 ppb (4) 3.6 ppb (3) 0.0 ppb (0) 36.0 ppb (28) 0.14 ppb (2) 11.0 μg/m3 (10) 7.0 μg/m3 (29) 29.0
 
May 20, 2019, 7 a.m. 3.3 ppb (3) -0.2 ppb (0) 3.5 ppb (3) 3.0 ppb (3) 3.5 ppb (3) 0.0 ppb (0) 36.0 ppb (28) 0.14 ppb (2) 16.0 μg/m3 (15) 9.0 μg/m3 (38) 38.0
 
May 20, 2019, 6 a.m. 3.0 ppb (3) -0.2 ppb (0) 3.6 ppb (3) 3.0 ppb (3) 3.6 ppb (3) 0.0 ppb (0) 37.0 ppb (28) 0.15 ppb (2) 11.0 μg/m3 (10) 6.0 μg/m3 (25) 28.0
 
May 20, 2019, 5 a.m. 1.9 ppb (2) -0.3 ppb (0) 2.5 ppb (2) 2.0 ppb (2) 2.5 ppb (2) 0.0 ppb (0) 41.0 ppb (32) 0.12 ppb (1) 8.0 μg/m3 (7) 9.0 μg/m3 (38) 38.0
 
May 20, 2019, 4 a.m. 2.3 ppb (2) -0.2 ppb (0) 2.6 ppb (2) 3.0 ppb (3) 2.2 ppb (2) 0.0 ppb (0) 39.0 ppb (30) 0.13 ppb (1) 21.0 μg/m3 (19) 6.0 μg/m3 (25) 30.0
 
May 20, 2019, 3 a.m. 2.5 ppb (2) -0.2 ppb (0) 2.7 ppb (3) 3.0 ppb (3) 2.7 ppb (3) 0.0 ppb (0) 37.0 ppb (28) 0.12 ppb (1) 19.0 μg/m3 (17) 7.0 μg/m3 (29) 29.0
 
May 20, 2019, 2 a.m. 2.5 ppb (2) -0.2 ppb (0) 2.5 ppb (2) 3.0 ppb (3) 2.5 ppb (2) 0.0 ppb (0) 39.0 ppb (30) 0.12 ppb (1) 25.0 μg/m3 (23) 8.0 μg/m3 (33) 33.0
 
May 20, 2019, 1 a.m. 1.9 ppb (2) -0.1 ppb (0) 2.2 ppb (2) 2.0 ppb (2) 2.1 ppb (2) 0.0 ppb (0) 42.0 ppb (32) 0.13 ppb (1) 19.0 μg/m3 (17) 10.0 μg/m3 (42) 42.0
 
May 20, 2019, midnight 1.8 ppb (2) 0.0 ppb (0) 2.2 ppb (2) 2.0 ppb (2) 1.8 ppb (2) 0.0 ppb (0) 45.0 ppb (35) 0.13 ppb (1) 17.0 μg/m3 (15) 9.0 μg/m3 (38) 38.0
 
May 19, 2019, 11 p.m. 1.6 ppb (1) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 45.0 ppb (35) 0.12 ppb (1) 9.0 μg/m3 (8) 2.0 μg/m3 (8) 35.0
 
May 19, 2019, 10 p.m. 1.9 ppb (2) 0.1 ppb (0) 2.7 ppb (3) 2.0 ppb (2) 2.3 ppb (2) 0.0 ppb (0) 46.0 ppb (35) 0.12 ppb (1) 11.0 μg/m3 (10) 3.0 μg/m3 (12) 35.0
 
May 19, 2019, 9 p.m. 4.8 ppb (4) 0.5 ppb (0) 5.7 ppb (5) 4.0 ppb (4) 4.8 ppb (4) 0.0 ppb (0) 45.0 ppb (35) 0.16 ppb (2) 10.0 μg/m3 (9) 7.0 μg/m3 (29) 35.0
 
May 19, 2019, 8 p.m. 5.8 ppb (5) 0.8 ppb (1) 6.5 ppb (6) 5.0 ppb (5) 5.4 ppb (5) 0.0 ppb (0) 41.0 ppb (32) 0.15 ppb (2) 7.0 μg/m3 (6) 7.0 μg/m3 (29) 32.0
 
May 19, 2019, 7 p.m. 5.5 ppb (5) 1.2 ppb (1) 6.2 ppb (6) 4.0 ppb (4) 4.8 ppb (4) 0.0 ppb (0) 38.0 ppb (29) 0.13 ppb (1) 7.0 μg/m3 (6) 6.0 μg/m3 (25) 29.0
 
May 19, 2019, 6 p.m. 4.0 ppb (4) 0.5 ppb (0) 4.8 ppb (4) 3.0 ppb (3) 3.9 ppb (4) 0.0 ppb (0) 39.0 ppb (30) 0.12 ppb (1) 6.0 μg/m3 (5) 4.0 μg/m3 (17) 30.0
 
May 19, 2019, 5 p.m. 7.5 ppb (7) 1.8 ppb (2) 7.1 ppb (7) 6.0 ppb (6) 4.9 ppb (5) 0.0 ppb (0) 38.0 ppb (29) 0.12 ppb (1) 7.0 μg/m3 (6) 5.0 μg/m3 (21) 29.0
 
May 19, 2019, 4 p.m. 5.8 ppb (5) 0.8 ppb (1) 6.4 ppb (6) 5.0 ppb (5) 5.0 ppb (5) 0.0 ppb (0) 39.0 ppb (30) 0.11 ppb (1) 8.0 μg/m3 (7) 6.0 μg/m3 (25) 30.0
 
May 19, 2019, 3 p.m. 6.9 ppb (6) 1.0 ppb (1) 6.9 ppb (6) 6.0 ppb (6) 5.8 ppb (5) 0.0 ppb (0) 37.0 ppb (28) 0.12 ppb (1) 10.0 μg/m3 (9) 4.0 μg/m3 (17) 28.0
 
May 19, 2019, 2 p.m. 9.8 ppb (9) 0.7 ppb (1) 10.3 ppb (10) 9.0 ppb (8) 9.5 ppb (9) 0.0 ppb (0) 34.0 ppb (26) 0.18 ppb (2) 11.0 μg/m3 (10) 7.0 μg/m3 (29) 29.0
 
May 19, 2019, 1 p.m. 12.1 ppb (11) 0.3 ppb (0) 11.7 ppb (11) 12.0 ppb (11) 11.5 ppb (11) 0.0 ppb (0) 31.0 ppb (24) 0.18 ppb (2) 12.0 μg/m3 (11) 9.0 μg/m3 (38) 38.0
 
May 19, 2019, noon 9.1 ppb (8) 0.1 ppb (0) 8.7 ppb (8) 9.0 ppb (8) 8.7 ppb (8) 0.0 ppb (0) 31.0 ppb (24) 0.17 ppb (2) 12.0 μg/m3 (11) 4.0 μg/m3 (17) 24.0
 
May 19, 2019, 11 a.m. 5.0 ppb (5) 0.1 ppb (0) 4.9 ppb (5) 5.0 ppb (5) 4.9 ppb (5) 0.0 ppb (0) 33.0 ppb (25) 0.16 ppb (2) 9.0 μg/m3 (8) 4.0 μg/m3 (17) 25.0
 
May 19, 2019, 10 a.m. 3.9 ppb (4) 0.0 ppb (0) 4.4 ppb (4) 4.0 ppb (4) 4.4 ppb (4) 0.0 ppb (0) 36.0 ppb (28) 0.15 ppb (2) 10.0 μg/m3 (9) 4.0 μg/m3 (17) 28.0
 
May 19, 2019, 9 a.m. 2.5 ppb (2) -0.1 ppb (0) 3.5 ppb (3) 3.0 ppb (3) 3.6 ppb (3) 0.0 ppb (0) 38.0 ppb (29) 0.12 ppb (1) 11.0 μg/m3 (10) 5.0 μg/m3 (21) 29.0
 
May 19, 2019, 8 a.m. 3.0 ppb (3) -0.1 ppb (0) 4.3 ppb (4) 3.0 ppb (3) 4.3 ppb (4) 0.0 ppb (0) 37.0 ppb (28) 0.14 ppb (2) 20.0 μg/m3 (18) 6.0 μg/m3 (25) 28.0
 
May 19, 2019, 7 a.m. 2.7 ppb (3) -0.2 ppb (0) 3.6 ppb (3) 3.0 ppb (3) 3.6 ppb (3) 0.0 ppb (0) 37.0 ppb (28) 0.11 ppb (1) 10.0 μg/m3 (9) 7.0 μg/m3 (29) 29.0
 
May 19, 2019, 6 a.m. 4.1 ppb (4) -0.1 ppb (0) 5.5 ppb (5) 4.0 ppb (4) 5.5 ppb (5) 0.0 ppb (0) 36.0 ppb (28) 0.13 ppb (1) 18.0 μg/m3 (16) 8.0 μg/m3 (33) 33.0
 
May 19, 2019, 5 a.m. 7.0 ppb (6) 0.1 ppb (0) 7.7 ppb (7) 7.0 ppb (6) 7.5 ppb (7) 0.0 ppb (0) 35.0 ppb (27) 0.15 ppb (2) 21.0 μg/m3 (19) 8.0 μg/m3 (33) 33.0
 
May 19, 2019, 4 a.m. 9.9 ppb (9) 0.2 ppb (0) 10.7 ppb (10) 10.0 ppb (9) 10.4 ppb (10) 0.0 ppb (0) 35.0 ppb (27) 0.2 ppb (2) 31.0 μg/m3 (28) 12.0 μg/m3 (50) 50.0
 
May 19, 2019, 3 a.m. 7.4 ppb (7) 0.0 ppb (0) 8.5 ppb (8) 7.0 ppb (6) 8.5 ppb (8) 0.0 ppb (0) 36.0 ppb (28) 0.19 ppb (2) 27.0 μg/m3 (25) 8.0 μg/m3 (33) 33.0
 
May 19, 2019, 2 a.m. 6.0 ppb (6) -0.1 ppb (0) 6.8 ppb (6) 6.0 ppb (6) 6.8 ppb (6) 0.0 ppb (0) 41.0 ppb (32) 0.18 ppb (2) 29.0 μg/m3 (26) 8.0 μg/m3 (33) 33.0
 
May 19, 2019, 1 a.m. 5.1 ppb (5) 0.0 ppb (0) 6.1 ppb (6) 5.0 ppb (5) 6.0 ppb (6) 0.0 ppb (0) 42.0 ppb (32) 0.16 ppb (2) 28.0 μg/m3 (25) 8.0 μg/m3 (33) 33.0
 
May 19, 2019, midnight 5.8 ppb (5) 0.3 ppb (0) 6.6 ppb (6) 5.0 ppb (5) 6.1 ppb (6) 0.0 ppb (0) 41.0 ppb (32) 0.16 ppb (2) 29.0 μg/m3 (26) 6.0 μg/m3 (25) 32.0
 
May 18, 2019, 11 p.m. 5.5 ppb (5) 0.4 ppb (0) 6.4 ppb (6) 5.0 ppb (5) 5.7 ppb (5) 0.0 ppb (0) 42.0 ppb (32) 0.15 ppb (2) 29.0 μg/m3 (26) 8.0 μg/m3 (33) 33.0
 
May 18, 2019, 10 p.m. 6.7 ppb (6) 0.8 ppb (1) 7.4 ppb (7) 6.0 ppb (6) 6.3 ppb (6) 0.0 ppb (0) 44.0 ppb (34) 0.16 ppb (2) 28.0 μg/m3 (25) 11.0 μg/m3 (46) 46.0