AQSQID: 060371201

Site Name: Reseda

Location: LA, CA

Reporting: True, Located: True

Current AQI: 29.0

LA CA, US: 34.1992, -118.5331

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
March 22, 2019, 5 a.m. 7.0 ppb (6) 0.0 ppb (0) N/A 7.0 ppb (6) N/A N/A 38.0 ppb (29) 0.31 ppb (3) N/A 6.3 μg/m3 (26) 29.0
 
March 22, 2019, 4 a.m. 4.9 ppb (5) -0.1 ppb (0) N/A 5.0 ppb (5) N/A N/A 42.0 ppb (32) 0.31 ppb (3) N/A 3.9 μg/m3 (16) 32.0
 
March 22, 2019, 3 a.m. 3.4 ppb (3) -0.1 ppb (0) N/A 4.0 ppb (4) N/A N/A 48.0 ppb (37) 0.26 ppb (3) N/A 5.9 μg/m3 (25) 37.0
 
March 22, 2019, 2 a.m. 4.1 ppb (4) 0.2 ppb (0) N/A 4.0 ppb (4) N/A N/A 50.0 ppb (38) 0.27 ppb (3) N/A 3.9 μg/m3 (16) 38.0
 
March 22, 2019, 1 a.m. 2.6 ppb (2) 0.2 ppb (0) N/A 2.0 ppb (2) N/A N/A 53.0 ppb (41) 0.24 ppb (3) N/A 0.5 μg/m3 (2) 41.0
 
March 22, 2019, midnight 2.1 ppb (2) 0.5 ppb (0) N/A 2.0 ppb (2) N/A N/A 52.0 ppb (40) 0.25 ppb (3) N/A 2.9 μg/m3 (12) 40.0
 
March 21, 2019, 11 p.m. 3.9 ppb (4) 0.7 ppb (1) N/A 3.0 ppb (3) N/A N/A 48.0 ppb (37) 0.24 ppb (3) N/A 6.4 μg/m3 (27) 37.0
 
March 21, 2019, 10 p.m. 2.1 ppb (2) 0.4 ppb (0) N/A 2.0 ppb (2) N/A N/A 51.0 ppb (39) 0.23 ppb (3) N/A 6.4 μg/m3 (27) 39.0
 
March 21, 2019, 9 p.m. 2.4 ppb (2) 0.6 ppb (1) N/A 2.0 ppb (2) N/A N/A 50.0 ppb (38) 0.23 ppb (3) N/A 5.1 μg/m3 (21) 38.0
 
March 21, 2019, 8 p.m. 3.0 ppb (3) 0.7 ppb (1) N/A 2.0 ppb (2) N/A N/A 49.0 ppb (38) 0.24 ppb (3) N/A 3.9 μg/m3 (16) 38.0
 
March 21, 2019, 7 p.m. 5.6 ppb (5) 1.5 ppb (1) N/A 4.0 ppb (4) N/A N/A 48.0 ppb (37) 0.24 ppb (3) N/A 5.6 μg/m3 (23) 37.0
 
March 21, 2019, 6 p.m. 8.4 ppb (8) 2.4 ppb (2) N/A 6.0 ppb (6) N/A N/A 42.0 ppb (32) 0.33 ppb (4) N/A 7.5 μg/m3 (31) 32.0
 
March 21, 2019, 5 p.m. 12.4 ppb (11) 2.1 ppb (2) N/A 10.0 ppb (9) N/A N/A 36.0 ppb (28) 0.33 ppb (4) N/A 9.0 μg/m3 (38) 38.0
 
March 21, 2019, 4 p.m. 14.7 ppb (14) 3.2 ppb (3) N/A 12.0 ppb (11) N/A N/A 32.0 ppb (25) 0.34 ppb (4) N/A 8.8 μg/m3 (37) 37.0
 
March 21, 2019, 3 p.m. 27.1 ppb (25) 5.6 ppb (5) N/A 22.0 ppb (20) N/A N/A 19.0 ppb (15) 0.52 ppb (6) N/A 8.3 μg/m3 (35) 35.0
 
March 21, 2019, 2 p.m. 23.7 ppb (22) 2.7 ppb (3) N/A 21.0 ppb (19) N/A N/A 17.0 ppb (13) 0.53 ppb (6) N/A 6.1 μg/m3 (25) 25.0
 
March 21, 2019, 1 p.m. 31.1 ppb (29) 9.3 ppb (9) N/A 22.0 ppb (20) N/A N/A 13.0 ppb (10) 0.4 ppb (4) N/A 4.8 μg/m3 (20) 29.0
 
March 21, 2019, noon 17.6 ppb (16) 1.6 ppb (1) N/A 16.0 ppb (15) N/A N/A 19.0 ppb (15) 0.35 ppb (4) N/A 6.0 μg/m3 (25) 25.0
 
March 21, 2019, 11 a.m. 13.6 ppb (13) 0.6 ppb (1) N/A 13.0 ppb (12) N/A N/A 18.0 ppb (14) 0.33 ppb (4) N/A 4.3 μg/m3 (18) 18.0
 
March 21, 2019, 10 a.m. 11.7 ppb (11) 0.3 ppb (0) N/A 11.0 ppb (10) N/A N/A 19.0 ppb (15) 0.28 ppb (3) N/A 4.3 μg/m3 (18) 18.0
 
March 21, 2019, 9 a.m. 6.4 ppb (6) 0.0 ppb (0) N/A 6.0 ppb (6) N/A N/A 29.0 ppb (22) 0.26 ppb (3) N/A 7.6 μg/m3 (32) 32.0
 
March 21, 2019, 8 a.m. 6.2 ppb (6) 0.0 ppb (0) N/A 6.0 ppb (6) N/A N/A 36.0 ppb (28) 0.24 ppb (3) N/A 6.6 μg/m3 (28) 28.0
 
March 21, 2019, 7 a.m. 4.0 ppb (4) 0.0 ppb (0) N/A 4.0 ppb (4) N/A N/A 42.0 ppb (32) 0.23 ppb (3) N/A 5.1 μg/m3 (21) 32.0
 
March 21, 2019, 6 a.m. 8.3 ppb (8) 0.1 ppb (0) N/A 8.0 ppb (7) N/A N/A 38.0 ppb (29) 0.27 ppb (3) N/A 9.5 μg/m3 (40) 40.0
 
March 21, 2019, 5 a.m. 8.3 ppb (8) 0.1 ppb (0) N/A 8.0 ppb (7) N/A N/A 39.0 ppb (30) 0.32 ppb (4) N/A 10.0 μg/m3 (42) 42.0
 
March 21, 2019, 4 a.m. 8.7 ppb (8) 0.0 ppb (0) N/A 9.0 ppb (8) N/A N/A 36.0 ppb (28) 0.37 ppb (4) N/A 5.9 μg/m3 (25) 28.0
 
March 21, 2019, 3 a.m. 8.1 ppb (8) 0.1 ppb (0) N/A 8.0 ppb (7) N/A N/A 38.0 ppb (29) 0.36 ppb (4) N/A 7.2 μg/m3 (30) 30.0
 
March 21, 2019, 2 a.m. 15.5 ppb (14) 0.2 ppb (0) N/A 15.0 ppb (14) N/A N/A 32.0 ppb (25) 0.44 ppb (5) N/A 9.1 μg/m3 (38) 38.0
 
March 21, 2019, 1 a.m. 12.0 ppb (11) 1.0 ppb (1) N/A 11.0 ppb (10) N/A N/A 42.0 ppb (32) 0.4 ppb (4) N/A 8.2 μg/m3 (34) 34.0
 
March 21, 2019, midnight 10.7 ppb (10) 1.3 ppb (1) N/A 9.0 ppb (8) N/A N/A 44.0 ppb (34) 0.35 ppb (4) N/A 8.2 μg/m3 (34) 34.0
 
March 20, 2019, 11 p.m. 14.4 ppb (13) 2.7 ppb (3) N/A 12.0 ppb (11) N/A N/A 41.0 ppb (32) 0.39 ppb (4) N/A 6.1 μg/m3 (25) 32.0
 
March 20, 2019, 10 p.m. 6.5 ppb (6) 0.5 ppb (0) N/A 6.0 ppb (6) N/A N/A 49.0 ppb (38) 0.3 ppb (3) N/A 4.1 μg/m3 (17) 38.0
 
March 20, 2019, 9 p.m. 5.7 ppb (5) 0.9 ppb (1) N/A 5.0 ppb (5) N/A N/A 47.0 ppb (36) 0.29 ppb (3) N/A N/A 36.0
 
March 20, 2019, 8 p.m. 5.1 ppb (5) 0.6 ppb (1) N/A 4.0 ppb (4) N/A N/A 50.0 ppb (38) 0.23 ppb (3) N/A 1.6 μg/m3 (7) 38.0
 
March 20, 2019, 7 p.m. 4.6 ppb (4) 0.6 ppb (1) N/A 4.0 ppb (4) N/A N/A 51.0 ppb (39) 0.23 ppb (3) N/A 8.4 μg/m3 (35) 39.0
 
March 20, 2019, 6 p.m. 5.0 ppb (5) 1.2 ppb (1) N/A 4.0 ppb (4) N/A N/A 50.0 ppb (38) 0.23 ppb (3) N/A N/A 38.0
 
March 20, 2019, 5 p.m. 6.5 ppb (6) 1.0 ppb (1) N/A 6.0 ppb (6) N/A N/A 46.0 ppb (35) 0.24 ppb (3) N/A N/A 35.0
 
March 20, 2019, 4 p.m. 8.1 ppb (8) 1.0 ppb (1) N/A 7.0 ppb (6) N/A N/A 41.0 ppb (32) 0.25 ppb (3) N/A 3.9 μg/m3 (16) 32.0
 
March 20, 2019, 3 p.m. 9.9 ppb (9) 1.2 ppb (1) N/A 9.0 ppb (8) N/A N/A 36.0 ppb (28) 0.27 ppb (3) N/A 9.7 μg/m3 (40) 40.0
 
March 20, 2019, 2 p.m. 12.0 ppb (11) 1.7 ppb (2) N/A 10.0 ppb (9) N/A N/A 31.0 ppb (24) 0.31 ppb (3) N/A 11.7 μg/m3 (49) 49.0
 
March 20, 2019, 1 p.m. 10.7 ppb (10) 0.4 ppb (0) N/A 10.0 ppb (9) N/A N/A 31.0 ppb (24) 0.34 ppb (4) N/A 11.3 μg/m3 (47) 47.0
 
March 20, 2019, noon 3.9 ppb (4) 0.1 ppb (0) N/A 4.0 ppb (4) N/A N/A 41.0 ppb (32) 0.22 ppb (2) N/A 12.0 μg/m3 (50) 50.0
 
March 20, 2019, 11 a.m. 1.9 ppb (2) -0.1 ppb (0) N/A 2.0 ppb (2) N/A N/A 45.0 ppb (35) 0.17 ppb (2) N/A 10.5 μg/m3 (44) 44.0
 
March 20, 2019, 10 a.m. 1.8 ppb (2) -0.1 ppb (0) N/A 2.0 ppb (2) N/A N/A 47.0 ppb (36) 0.17 ppb (2) N/A 10.5 μg/m3 (44) 44.0
 
March 20, 2019, 9 a.m. 2.1 ppb (2) -0.1 ppb (0) N/A 2.0 ppb (2) N/A N/A 47.0 ppb (36) 0.17 ppb (2) N/A 9.6 μg/m3 (40) 40.0
 
March 20, 2019, 8 a.m. 2.2 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A N/A 47.0 ppb (36) 0.17 ppb (2) N/A 5.5 μg/m3 (23) 36.0
 
March 20, 2019, 7 a.m. 4.3 ppb (4) 0.1 ppb (0) N/A 4.0 ppb (4) N/A N/A 42.0 ppb (32) 0.21 ppb (2) N/A 5.8 μg/m3 (24) 32.0
 
March 20, 2019, 6 a.m. 4.2 ppb (4) 0.1 ppb (0) N/A 4.0 ppb (4) N/A N/A 44.0 ppb (34) 0.21 ppb (2) N/A 6.8 μg/m3 (28) 34.0
 
March 20, 2019, 5 a.m. 2.9 ppb (3) 0.0 ppb (0) N/A 3.0 ppb (3) N/A N/A 48.0 ppb (37) 0.17 ppb (2) N/A 11.2 μg/m3 (47) 47.0
 
March 20, 2019, 4 a.m. 4.4 ppb (4) 0.1 ppb (0) N/A 4.0 ppb (4) N/A N/A 47.0 ppb (36) 0.19 ppb (2) N/A 14.6 μg/m3 (56) 56.0
 
March 20, 2019, 3 a.m. 6.4 ppb (6) 0.0 ppb (0) N/A 6.0 ppb (6) N/A N/A 45.0 ppb (35) 0.23 ppb (3) N/A 13.1 μg/m3 (52) 52.0
 
March 20, 2019, 2 a.m. 9.8 ppb (9) 0.4 ppb (0) N/A 9.0 ppb (8) N/A N/A 42.0 ppb (32) 0.27 ppb (3) N/A 12.1 μg/m3 (50) 50.0
 
March 20, 2019, 1 a.m. 10.1 ppb (9) 0.3 ppb (0) N/A 10.0 ppb (9) N/A N/A 46.0 ppb (35) 0.25 ppb (3) N/A 13.9 μg/m3 (54) 54.0
 
March 20, 2019, midnight 11.0 ppb (10) 0.8 ppb (1) N/A 10.0 ppb (9) N/A N/A 49.0 ppb (38) 0.26 ppb (3) N/A 13.9 μg/m3 (54) 54.0
 
March 19, 2019, 11 p.m. 10.7 ppb (10) 1.3 ppb (1) N/A 9.0 ppb (8) N/A N/A 53.0 ppb (41) 0.27 ppb (3) N/A 11.9 μg/m3 (50) 50.0
 
March 19, 2019, 10 p.m. 12.2 ppb (11) 1.3 ppb (1) N/A 11.0 ppb (10) N/A N/A 52.0 ppb (40) 0.29 ppb (3) N/A 17.3 μg/m3 (61) 61.0
 
March 19, 2019, 9 p.m. 15.9 ppb (15) 2.5 ppb (2) N/A 13.0 ppb (12) N/A N/A 51.0 ppb (39) 0.29 ppb (3) N/A 19.3 μg/m3 (66) 66.0
 
March 19, 2019, 8 p.m. 14.9 ppb (14) 2.6 ppb (2) N/A 12.0 ppb (11) N/A N/A 54.0 ppb (42) 0.31 ppb (3) N/A 19.3 μg/m3 (66) 66.0
 
March 19, 2019, 7 p.m. 15.9 ppb (15) 3.1 ppb (3) N/A 13.0 ppb (12) N/A N/A 52.0 ppb (40) 0.38 ppb (4) N/A 14.1 μg/m3 (54) 54.0
 
March 19, 2019, 6 p.m. 20.3 ppb (19) 4.4 ppb (4) N/A 16.0 ppb (15) N/A N/A 45.0 ppb (35) 0.46 ppb (5) N/A 19.6 μg/m3 (66) 66.0
 
March 19, 2019, 5 p.m. 27.0 ppb (25) 6.7 ppb (6) N/A 20.0 ppb (19) N/A N/A 33.0 ppb (25) 0.5 ppb (6) N/A 14.4 μg/m3 (55) 55.0
 
March 19, 2019, 4 p.m. 33.1 ppb (31) 8.6 ppb (8) N/A 24.0 ppb (22) N/A N/A 25.0 ppb (19) 0.68 ppb (8) N/A 21.1 μg/m3 (69) 69.0
 
March 19, 2019, 3 p.m. 48.4 ppb (45) 18.6 ppb (17) N/A 30.0 ppb (28) N/A N/A 12.0 ppb (9) 0.92 ppb (10) N/A 23.7 μg/m3 (75) 75.0
 
March 19, 2019, 2 p.m. 62.1 ppb (59) 30.0 ppb (28) N/A 32.0 ppb (30) N/A N/A 4.0 ppb (3) 1.0 ppb (11) N/A 21.5 μg/m3 (70) 70.0
 
March 19, 2019, 1 p.m. 49.6 ppb (46) 17.7 ppb (16) N/A 32.0 ppb (30) N/A N/A 2.0 ppb (2) 0.62 ppb (7) N/A 17.6 μg/m3 (62) 62.0
 
March 19, 2019, noon 36.5 ppb (34) 8.6 ppb (8) N/A 28.0 ppb (26) N/A N/A 5.0 ppb (4) 0.55 ppb (6) N/A 16.7 μg/m3 (60) 60.0
 
March 19, 2019, 11 a.m. 19.4 ppb (18) 0.4 ppb (0) N/A 19.0 ppb (18) N/A N/A 12.0 ppb (9) 0.51 ppb (6) N/A 10.4 μg/m3 (43) 43.0
 
March 19, 2019, 10 a.m. 18.8 ppb (17) 0.3 ppb (0) N/A 19.0 ppb (18) N/A N/A 14.0 ppb (11) 0.52 ppb (6) N/A 20.5 μg/m3 (68) 68.0
 
March 19, 2019, 9 a.m. 19.3 ppb (18) 0.2 ppb (0) N/A 19.0 ppb (18) N/A N/A 18.0 ppb (14) 0.51 ppb (6) N/A 11.1 μg/m3 (46) 46.0
 
March 19, 2019, 8 a.m. 21.8 ppb (20) 0.4 ppb (0) N/A 21.0 ppb (19) N/A N/A 19.0 ppb (15) 0.57 ppb (6) N/A 11.2 μg/m3 (47) 47.0
 
March 19, 2019, 7 a.m. 17.4 ppb (16) 0.0 ppb (0) N/A 17.0 ppb (16) N/A N/A 38.0 ppb (29) 0.46 ppb (5) N/A 17.6 μg/m3 (62) 62.0
 
March 19, 2019, 6 a.m. 15.3 ppb (14) 0.0 ppb (0) N/A 15.0 ppb (14) N/A N/A 50.0 ppb (38) 0.44 ppb (5) N/A 20.7 μg/m3 (69) 69.0
 
March 19, 2019, 5 a.m. 11.3 ppb (10) 0.0 ppb (0) N/A 11.0 ppb (10) N/A N/A 60.0 ppb (46) 0.36 ppb (4) N/A 18.1 μg/m3 (63) 63.0
 
March 19, 2019, 4 a.m. 12.5 ppb (12) 0.0 ppb (0) N/A 12.0 ppb (11) N/A N/A 58.0 ppb (45) 0.4 ppb (4) N/A 14.0 μg/m3 (54) 54.0
 
March 19, 2019, 3 a.m. 11.5 ppb (11) 0.0 ppb (0) N/A 12.0 ppb (11) N/A N/A 68.0 ppb (52) 0.38 ppb (4) N/A 13.0 μg/m3 (52) 52.0
 
March 19, 2019, 2 a.m. 12.6 ppb (12) 0.0 ppb (0) N/A 13.0 ppb (12) N/A N/A 63.0 ppb (48) 0.36 ppb (4) N/A 10.3 μg/m3 (43) 48.0
 
March 19, 2019, 1 a.m. 6.8 ppb (6) 0.1 ppb (0) N/A 7.0 ppb (6) N/A N/A 73.0 ppb (57) 0.29 ppb (3) N/A 8.1 μg/m3 (34) 57.0
 
March 19, 2019, midnight 4.3 ppb (4) 0.2 ppb (0) N/A 4.0 ppb (4) N/A N/A 72.0 ppb (56) 0.25 ppb (3) N/A 6.4 μg/m3 (27) 56.0
 
March 18, 2019, 11 p.m. 2.8 ppb (3) 0.3 ppb (0) N/A 3.0 ppb (3) N/A N/A 64.0 ppb (49) 0.2 ppb (2) N/A 7.1 μg/m3 (30) 49.0
 
March 18, 2019, 10 p.m. 2.1 ppb (2) 0.1 ppb (0) N/A 2.0 ppb (2) N/A N/A 65.0 ppb (50) 0.2 ppb (2) N/A 6.7 μg/m3 (28) 50.0
 
March 18, 2019, 9 p.m. 3.1 ppb (3) 0.2 ppb (0) N/A 3.0 ppb (3) N/A N/A 64.0 ppb (49) 0.2 ppb (2) N/A 5.4 μg/m3 (23) 49.0
 
March 18, 2019, 8 p.m. 5.9 ppb (5) 0.6 ppb (1) N/A 5.0 ppb (5) N/A N/A 68.0 ppb (52) 0.25 ppb (3) N/A 5.8 μg/m3 (24) 52.0
 
March 18, 2019, 7 p.m. 9.7 ppb (9) 1.2 ppb (1) N/A 8.0 ppb (7) N/A N/A 62.0 ppb (48) 0.31 ppb (3) N/A 4.0 μg/m3 (17) 48.0
 
March 18, 2019, 6 p.m. 9.6 ppb (9) 1.6 ppb (1) N/A 8.0 ppb (7) N/A N/A 55.0 ppb (42) 0.27 ppb (3) N/A 8.6 μg/m3 (36) 42.0
 
March 18, 2019, 5 p.m. 19.9 ppb (18) 4.6 ppb (4) N/A 15.0 ppb (14) N/A N/A 41.0 ppb (32) 0.44 ppb (5) N/A 14.9 μg/m3 (56) 56.0
 
March 18, 2019, 4 p.m. 33.4 ppb (31) 9.9 ppb (9) N/A 24.0 ppb (22) N/A N/A 28.0 ppb (22) 0.63 ppb (7) N/A 14.7 μg/m3 (56) 56.0
 
March 18, 2019, 3 p.m. 51.4 ppb (48) 22.7 ppb (21) N/A 29.0 ppb (27) N/A N/A 12.0 ppb (9) 0.82 ppb (9) N/A 17.4 μg/m3 (61) 61.0
 
March 18, 2019, 2 p.m. 72.8 ppb (70) 45.3 ppb (42) N/A 27.0 ppb (25) N/A N/A 4.0 ppb (3) 1.1 ppb (12) N/A 11.9 μg/m3 (50) 70.0
 
March 18, 2019, 1 p.m. 48.8 ppb (45) 23.3 ppb (22) N/A 25.0 ppb (23) N/A N/A 3.0 ppb (2) 0.78 ppb (9) N/A 14.4 μg/m3 (55) 55.0
 
March 18, 2019, noon 33.4 ppb (31) 8.2 ppb (8) N/A 25.0 ppb (23) N/A N/A 4.0 ppb (3) 0.57 ppb (6) N/A 12.2 μg/m3 (50) 50.0
 
March 18, 2019, 11 a.m. 25.4 ppb (24) 0.5 ppb (0) N/A 25.0 ppb (23) N/A N/A 8.0 ppb (6) 0.49 ppb (5) N/A 11.2 μg/m3 (47) 47.0
 
March 18, 2019, 10 a.m. 27.5 ppb (25) 1.5 ppb (1) N/A 26.0 ppb (24) N/A N/A 9.0 ppb (7) 0.54 ppb (6) N/A 17.5 μg/m3 (62) 62.0
 
March 18, 2019, 9 a.m. 18.6 ppb (17) 0.2 ppb (0) N/A 18.0 ppb (17) N/A N/A 23.0 ppb (18) 0.43 ppb (5) N/A 11.9 μg/m3 (50) 50.0
 
March 18, 2019, 8 a.m. 19.3 ppb (18) 0.2 ppb (0) N/A 19.0 ppb (18) N/A N/A 26.0 ppb (20) 0.43 ppb (5) N/A 12.9 μg/m3 (52) 52.0
 
March 18, 2019, 7 a.m. 26.6 ppb (25) 0.5 ppb (0) N/A 26.0 ppb (24) N/A N/A 16.0 ppb (12) 0.57 ppb (6) N/A 14.6 μg/m3 (56) 56.0
 
March 18, 2019, 6 a.m. 30.6 ppb (28) 1.1 ppb (1) N/A 30.0 ppb (28) N/A N/A 11.0 ppb (8) 0.64 ppb (7) N/A 14.1 μg/m3 (54) 54.0
 
March 18, 2019, 5 a.m. 24.7 ppb (23) 1.1 ppb (1) N/A 24.0 ppb (22) N/A N/A 23.0 ppb (18) 0.52 ppb (6) N/A 11.0 μg/m3 (46) 46.0
 
March 18, 2019, 4 a.m. 14.1 ppb (13) 0.0 ppb (0) N/A 14.0 ppb (13) N/A N/A 37.0 ppb (28) 0.41 ppb (5) N/A 7.0 μg/m3 (29) 29.0
 
March 18, 2019, 3 a.m. 9.4 ppb (9) -0.1 ppb (0) N/A 9.0 ppb (8) N/A N/A 48.0 ppb (37) 0.3 ppb (3) N/A 4.1 μg/m3 (17) 37.0
 
March 18, 2019, 2 a.m. 6.0 ppb (6) 0.0 ppb (0) N/A 6.0 ppb (6) N/A N/A 54.0 ppb (42) 0.26 ppb (3) N/A 2.7 μg/m3 (11) 42.0
 
March 18, 2019, 1 a.m. 2.9 ppb (3) -0.1 ppb (0) N/A 3.0 ppb (3) N/A N/A 61.0 ppb (47) 0.21 ppb (2) N/A 2.9 μg/m3 (12) 47.0
 
March 18, 2019, midnight 1.7 ppb (2) -0.1 ppb (0) N/A 2.0 ppb (2) N/A N/A 63.0 ppb (48) 0.19 ppb (2) N/A 5.2 μg/m3 (22) 48.0
 
March 17, 2019, 11 p.m. 1.6 ppb (1) 0.0 ppb (0) N/A 2.0 ppb (2) N/A N/A 63.0 ppb (48) 0.19 ppb (2) N/A 4.9 μg/m3 (20) 48.0
 
March 17, 2019, 10 p.m. 1.3 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 68.0 ppb (52) 0.19 ppb (2) N/A 3.9 μg/m3 (16) 52.0
 
March 17, 2019, 9 p.m. 1.8 ppb (2) 0.2 ppb (0) N/A 2.0 ppb (2) N/A N/A 65.0 ppb (50) 0.19 ppb (2) N/A 2.1 μg/m3 (9) 50.0
 
March 17, 2019, 8 p.m. 1.3 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 61.0 ppb (47) 0.18 ppb (2) N/A 1.8 μg/m3 (8) 47.0
 
March 17, 2019, 7 p.m. 1.2 ppb (1) 0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 59.0 ppb (45) 0.17 ppb (2) N/A 5.9 μg/m3 (25) 45.0
 
March 17, 2019, 6 p.m. 2.7 ppb (3) 0.5 ppb (0) N/A 2.0 ppb (2) N/A N/A 54.0 ppb (42) 0.21 ppb (2) N/A 7.3 μg/m3 (30) 42.0
 
March 17, 2019, 5 p.m. 6.9 ppb (6) 1.3 ppb (1) N/A 6.0 ppb (6) N/A N/A 48.0 ppb (37) 0.24 ppb (3) N/A 8.7 μg/m3 (36) 37.0
 
March 17, 2019, 4 p.m. 27.8 ppb (26) 9.4 ppb (9) N/A 18.0 ppb (17) N/A N/A 28.0 ppb (22) 0.51 ppb (6) N/A 8.3 μg/m3 (35) 35.0
 
March 17, 2019, 3 p.m. 41.5 ppb (38) 17.8 ppb (16) N/A 24.0 ppb (22) N/A N/A 13.0 ppb (10) 0.64 ppb (7) N/A 5.8 μg/m3 (24) 38.0
 
March 17, 2019, 2 p.m. 36.5 ppb (34) 14.5 ppb (13) N/A 22.0 ppb (20) N/A N/A 5.0 ppb (4) 0.62 ppb (7) N/A 5.1 μg/m3 (21) 34.0
 
March 17, 2019, 1 p.m. 31.7 ppb (29) 8.8 ppb (8) N/A 23.0 ppb (21) N/A N/A 4.0 ppb (3) 0.63 ppb (7) N/A 8.1 μg/m3 (34) 34.0
 
March 17, 2019, noon 21.6 ppb (20) 1.0 ppb (1) N/A 21.0 ppb (19) N/A N/A 6.0 ppb (5) 0.46 ppb (5) N/A 10.9 μg/m3 (45) 45.0
 
March 17, 2019, 11 a.m. 22.3 ppb (21) 1.9 ppb (2) N/A 20.0 ppb (19) N/A N/A 8.0 ppb (6) 0.5 ppb (6) N/A 9.7 μg/m3 (40) 40.0
 
March 17, 2019, 10 a.m. 21.0 ppb (19) 0.7 ppb (1) N/A 20.0 ppb (19) N/A N/A 11.0 ppb (8) 0.48 ppb (5) N/A 10.0 μg/m3 (42) 42.0
 
March 17, 2019, 9 a.m. 29.8 ppb (28) 2.7 ppb (3) N/A 27.0 ppb (25) N/A N/A 7.0 ppb (5) 0.66 ppb (7) N/A 11.9 μg/m3 (50) 50.0
 
March 17, 2019, 8 a.m. 33.7 ppb (31) 3.8 ppb (4) N/A 30.0 ppb (28) N/A N/A 6.0 ppb (5) 0.71 ppb (8) N/A 10.7 μg/m3 (45) 45.0
 
March 17, 2019, 7 a.m. 36.2 ppb (34) 4.5 ppb (4) N/A 32.0 ppb (30) N/A N/A 6.0 ppb (5) 0.78 ppb (9) N/A 11.1 μg/m3 (46) 46.0
 
March 17, 2019, 6 a.m. 36.1 ppb (33) 3.9 ppb (4) N/A 32.0 ppb (30) N/A N/A 7.0 ppb (5) 0.84 ppb (9) N/A 13.3 μg/m3 (53) 53.0
 
March 17, 2019, 5 a.m. 41.2 ppb (38) 5.1 ppb (5) N/A 36.0 ppb (33) N/A N/A 6.0 ppb (5) 0.84 ppb (9) N/A 20.8 μg/m3 (69) 69.0
 
March 17, 2019, 4 a.m. 38.9 ppb (36) 5.0 ppb (5) N/A 34.0 ppb (31) N/A N/A 11.0 ppb (8) 0.77 ppb (9) N/A 15.3 μg/m3 (57) 57.0
 
March 17, 2019, 3 a.m. 27.2 ppb (25) 0.4 ppb (0) N/A 27.0 ppb (25) N/A N/A 24.0 ppb (18) 0.56 ppb (6) N/A 9.2 μg/m3 (38) 38.0
 
March 17, 2019, 2 a.m. 10.9 ppb (10) 0.1 ppb (0) N/A 11.0 ppb (10) N/A N/A 48.0 ppb (37) 0.31 ppb (3) N/A 2.9 μg/m3 (12) 37.0
 
March 17, 2019, 1 a.m. 3.4 ppb (3) 0.0 ppb (0) N/A 3.0 ppb (3) N/A N/A 56.0 ppb (43) 0.21 ppb (2) N/A 2.6 μg/m3 (11) 43.0
 
March 17, 2019, midnight 2.4 ppb (2) 0.1 ppb (0) N/A 2.0 ppb (2) N/A N/A 59.0 ppb (45) 0.19 ppb (2) N/A 4.1 μg/m3 (17) 45.0
 
March 16, 2019, 11 p.m. 2.3 ppb (2) 0.3 ppb (0) N/A 2.0 ppb (2) N/A N/A 59.0 ppb (45) 0.19 ppb (2) N/A 5.3 μg/m3 (22) 45.0
 
March 16, 2019, 10 p.m. 1.9 ppb (2) 0.2 ppb (0) N/A 2.0 ppb (2) N/A N/A 57.0 ppb (44) 0.2 ppb (2) N/A 3.6 μg/m3 (15) 44.0
 
March 16, 2019, 9 p.m. 2.4 ppb (2) 0.4 ppb (0) N/A 2.0 ppb (2) N/A N/A 55.0 ppb (42) 0.2 ppb (2) N/A 1.0 μg/m3 (4) 42.0
 
March 16, 2019, 8 p.m. 2.2 ppb (2) 0.5 ppb (0) N/A 2.0 ppb (2) N/A N/A 55.0 ppb (42) 0.18 ppb (2) N/A 1.9 μg/m3 (8) 42.0
 
March 16, 2019, 7 p.m. 2.2 ppb (2) 0.6 ppb (1) N/A 2.0 ppb (2) N/A N/A 53.0 ppb (41) 0.18 ppb (2) N/A 3.1 μg/m3 (13) 41.0
 
March 16, 2019, 6 p.m. 1.5 ppb (1) 0.2 ppb (0) N/A 1.0 ppb (1) N/A N/A 54.0 ppb (42) 0.17 ppb (2) N/A 4.8 μg/m3 (20) 42.0
 
March 16, 2019, 5 p.m. 3.6 ppb (3) 0.9 ppb (1) N/A 3.0 ppb (3) N/A N/A 50.0 ppb (38) 0.2 ppb (2) N/A 5.8 μg/m3 (24) 38.0
 
March 16, 2019, 4 p.m. 4.0 ppb (4) 0.8 ppb (1) N/A 3.0 ppb (3) N/A N/A 47.0 ppb (36) 0.22 ppb (2) N/A 5.8 μg/m3 (24) 36.0
 
March 16, 2019, 3 p.m. 4.6 ppb (4) 0.7 ppb (1) N/A 4.0 ppb (4) N/A N/A 45.0 ppb (35) 0.23 ppb (3) N/A 3.1 μg/m3 (13) 35.0
 
March 16, 2019, 2 p.m. 11.5 ppb (11) 1.2 ppb (1) N/A 10.0 ppb (9) N/A N/A 39.0 ppb (30) 0.3 ppb (3) N/A 2.6 μg/m3 (11) 30.0
 
March 16, 2019, 1 p.m. 4.0 ppb (4) 0.0 ppb (0) N/A 4.0 ppb (4) N/A N/A 44.0 ppb (34) 0.2 ppb (2) N/A 3.5 μg/m3 (15) 34.0
 
March 16, 2019, noon 2.0 ppb (2) -0.2 ppb (0) N/A 2.0 ppb (2) N/A N/A 46.0 ppb (35) 0.17 ppb (2) N/A 2.8 μg/m3 (12) 35.0
 
March 16, 2019, 11 a.m. 8.1 ppb (8) -0.1 ppb (0) N/A 8.0 ppb (7) N/A N/A 35.0 ppb (27) 0.22 ppb (2) N/A 3.3 μg/m3 (14) 27.0
 
March 16, 2019, 10 a.m. 11.6 ppb (11) 0.0 ppb (0) N/A 12.0 ppb (11) N/A N/A 29.0 ppb (22) 0.27 ppb (3) N/A 3.3 μg/m3 (14) 22.0
 
March 16, 2019, 9 a.m. 15.1 ppb (14) 0.8 ppb (1) N/A 14.0 ppb (13) N/A N/A 26.0 ppb (20) 0.3 ppb (3) N/A 3.3 μg/m3 (14) 20.0
 
March 16, 2019, 8 a.m. 17.8 ppb (16) 0.6 ppb (1) N/A 17.0 ppb (16) N/A N/A 23.0 ppb (18) 0.37 ppb (4) N/A 3.4 μg/m3 (14) 18.0
 
March 16, 2019, 7 a.m. 17.8 ppb (16) 0.1 ppb (0) N/A 18.0 ppb (17) N/A N/A 23.0 ppb (18) 0.39 ppb (4) N/A 4.9 μg/m3 (20) 20.0
 
March 16, 2019, 6 a.m. 8.3 ppb (8) -0.1 ppb (0) N/A 8.0 ppb (7) N/A N/A 40.0 ppb (31) 0.27 ppb (3) N/A 3.8 μg/m3 (16) 31.0
 
March 16, 2019, 5 a.m. 11.2 ppb (10) 0.0 ppb (0) N/A 11.0 ppb (10) N/A N/A 39.0 ppb (30) 0.29 ppb (3) N/A 2.2 μg/m3 (9) 30.0
 
March 16, 2019, 4 a.m. 12.0 ppb (11) 0.3 ppb (0) N/A 12.0 ppb (11) N/A N/A 40.0 ppb (31) 0.3 ppb (3) N/A 1.3 μg/m3 (5) 31.0
 
March 16, 2019, 3 a.m. 7.7 ppb (7) 0.0 ppb (0) N/A 8.0 ppb (7) N/A N/A 46.0 ppb (35) 0.26 ppb (3) N/A -1.4 μg/m3 (0) 35.0
 
March 16, 2019, 2 a.m. 4.4 ppb (4) -0.1 ppb (0) N/A 5.0 ppb (5) N/A N/A 50.0 ppb (38) 0.22 ppb (2) N/A 0.8 μg/m3 (3) 38.0
 
March 16, 2019, 1 a.m. 3.4 ppb (3) 0.3 ppb (0) N/A 3.0 ppb (3) N/A N/A 52.0 ppb (40) 0.2 ppb (2) N/A 2.1 μg/m3 (9) 40.0
 
March 16, 2019, midnight 4.8 ppb (4) 1.3 ppb (1) N/A 3.0 ppb (3) N/A N/A 51.0 ppb (39) 0.21 ppb (2) N/A 0.9 μg/m3 (4) 39.0
 
March 15, 2019, 11 p.m. 3.1 ppb (3) 0.8 ppb (1) N/A 2.0 ppb (2) N/A N/A 52.0 ppb (40) 0.2 ppb (2) N/A 0.4 μg/m3 (2) 40.0
 
March 15, 2019, 10 p.m. 2.5 ppb (2) 0.6 ppb (1) N/A 2.0 ppb (2) N/A N/A 52.0 ppb (40) 0.19 ppb (2) N/A 2.4 μg/m3 (10) 40.0
 
March 15, 2019, 9 p.m. 2.8 ppb (3) 0.7 ppb (1) N/A 2.0 ppb (2) N/A N/A 51.0 ppb (39) 0.2 ppb (2) N/A 3.8 μg/m3 (16) 39.0
 
March 15, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 2.0 μg/m3 (8) 8.0
 
March 15, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 2.4 μg/m3 (10) 10.0
 
March 15, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 2.9 μg/m3 (12) 12.0
 
March 15, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 2.3 μg/m3 (10) 10.0
 
March 15, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 1.8 μg/m3 (8) 8.0
 
March 15, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 2.8 μg/m3 (12) 12.0
 
March 15, 2019, 2 p.m. 6.2 ppb (6) 0.2 ppb (0) N/A 6.0 ppb (6) N/A N/A 41.0 ppb (32) 0.25 ppb (3) N/A 2.5 μg/m3 (10) 32.0
 
March 15, 2019, 1 p.m. 4.3 ppb (4) 0.2 ppb (0) N/A 4.0 ppb (4) N/A N/A 42.0 ppb (32) 0.24 ppb (3) N/A 1.5 μg/m3 (6) 32.0
 
March 15, 2019, noon 2.7 ppb (3) 0.0 ppb (0) N/A 3.0 ppb (3) N/A N/A 43.0 ppb (33) 0.2 ppb (2) N/A 2.3 μg/m3 (10) 33.0
 
March 15, 2019, 11 a.m. 1.4 ppb (1) -0.2 ppb (0) N/A 2.0 ppb (2) N/A N/A 44.0 ppb (34) 0.19 ppb (2) N/A 2.3 μg/m3 (10) 34.0
 
March 15, 2019, 10 a.m. 1.0 ppb (1) -0.2 ppb (0) N/A 1.0 ppb (1) N/A N/A 46.0 ppb (35) 0.19 ppb (2) N/A 2.0 μg/m3 (8) 35.0
 
March 15, 2019, 9 a.m. 5.7 ppb (5) 0.0 ppb (0) N/A 6.0 ppb (6) N/A N/A 44.0 ppb (34) 0.23 ppb (3) N/A 0.8 μg/m3 (3) 34.0
 
March 15, 2019, 8 a.m. 15.9 ppb (15) 0.3 ppb (0) N/A 16.0 ppb (15) N/A N/A 27.0 ppb (21) 0.31 ppb (3) N/A 1.3 μg/m3 (5) 21.0
 
March 15, 2019, 7 a.m. 9.3 ppb (9) -0.1 ppb (0) N/A 9.0 ppb (8) N/A N/A 36.0 ppb (28) 0.31 ppb (3) N/A 3.1 μg/m3 (13) 28.0
 
March 15, 2019, 6 a.m. 1.6 ppb (1) -0.1 ppb (0) N/A 2.0 ppb (2) N/A N/A 48.0 ppb (37) 0.21 ppb (2) N/A 1.6 μg/m3 (7) 37.0