AQSQID: 060371103

Site Name: Los Angeles - N. Main Street

Location: Los Angeles (Central City E), CA

Reporting: True, Located: True

Current AQI: 76.0

Los Angeles (Central City E) CA, US: 34.066429, -118.226755

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
Jan. 27, 2020, 4 a.m. 30.8 ppb (29) 1.7 ppb (2) 30.4 ppb (28) 29.0 ppb (27) 29.8 ppb (28) N/A 12.0 ppb (9) 0.56 ppb (6) 34.0 μg/m3 (31) 24.0 μg/m3 (76) 76.0
 
Jan. 27, 2020, 3 a.m. 17.7 ppb (16) 0.9 ppb (1) 17.7 ppb (16) 17.0 ppb (16) 17.3 ppb (16) N/A 23.0 ppb (18) 0.35 ppb (4) 29.0 μg/m3 (26) 19.0 μg/m3 (65) 65.0
 
Jan. 27, 2020, 2 a.m. 14.6 ppb (14) 0.8 ppb (1) 14.7 ppb (14) 14.0 ppb (13) 14.8 ppb (14) N/A 26.0 ppb (20) 0.37 ppb (4) 30.0 μg/m3 (27) 19.0 μg/m3 (65) 65.0
 
Jan. 27, 2020, 1 a.m. 12.3 ppb (11) 0.4 ppb (0) 13.0 ppb (12) 12.0 ppb (11) 13.0 ppb (12) N/A 30.0 ppb (23) 0.32 ppb (4) 30.0 μg/m3 (27) 27.0 μg/m3 (82) 82.0
 
Jan. 27, 2020, midnight 13.4 ppb (12) 0.7 ppb (1) 12.5 ppb (12) 13.0 ppb (12) 12.1 ppb (11) N/A 32.0 ppb (25) 0.3 ppb (3) 38.0 μg/m3 (35) 23.0 μg/m3 (73) 73.0
 
Jan. 26, 2020, 11 p.m. 19.2 ppb (18) 2.0 ppb (2) N/A 17.0 ppb (16) N/A N/A 30.0 ppb (23) 0.36 ppb (4) 45.0 μg/m3 (41) 31.0 μg/m3 (90) 90.0
 
Jan. 26, 2020, 10 p.m. 17.0 ppb (16) 2.2 ppb (2) 22.3 ppb (21) 15.0 ppb (14) 20.4 ppb (19) N/A 32.0 ppb (25) 0.38 ppb (4) 50.0 μg/m3 (45) 34.0 μg/m3 (97) 97.0
 
Jan. 26, 2020, 9 p.m. 22.9 ppb (21) 4.1 ppb (4) 28.6 ppb (26) 19.0 ppb (18) 24.7 ppb (23) N/A 26.0 ppb (20) 0.45 ppb (5) 58.0 μg/m3 (52) 47.0 μg/m3 (129) 129.0
 
Jan. 26, 2020, 8 p.m. 24.5 ppb (23) 5.0 ppb (5) 29.7 ppb (28) 19.0 ppb (18) 25.2 ppb (23) N/A 20.0 ppb (15) 0.43 ppb (5) 60.0 μg/m3 (52) 44.0 μg/m3 (121) 121.0
 
Jan. 26, 2020, 7 p.m. 21.2 ppb (20) 3.0 ppb (3) 26.5 ppb (25) 18.0 ppb (17) 24.0 ppb (22) N/A 18.0 ppb (14) 0.4 ppb (4) 59.0 μg/m3 (52) 46.0 μg/m3 (126) 126.0
 
Jan. 26, 2020, 6 p.m. 20.1 ppb (19) 4.7 ppb (4) 26.6 ppb (25) 15.0 ppb (14) 21.7 ppb (20) N/A 17.0 ppb (13) 0.39 ppb (4) 60.0 μg/m3 (52) 47.0 μg/m3 (129) 129.0
 
Jan. 26, 2020, 5 p.m. 21.3 ppb (20) 3.4 ppb (3) 27.4 ppb (25) 18.0 ppb (17) 24.8 ppb (23) N/A 14.0 ppb (11) 0.41 ppb (5) 61.0 μg/m3 (53) 46.0 μg/m3 (126) 126.0
 
Jan. 26, 2020, 4 p.m. 26.6 ppb (25) 6.0 ppb (6) 31.8 ppb (29) 21.0 ppb (19) 27.1 ppb (25) N/A 10.0 ppb (8) 0.41 ppb (5) 66.0 μg/m3 (56) 53.0 μg/m3 (144) 144.0
 
Jan. 26, 2020, 3 p.m. 19.6 ppb (18) 1.8 ppb (2) 25.1 ppb (23) 18.0 ppb (17) 24.6 ppb (23) N/A 11.0 ppb (8) 0.42 ppb (5) 63.0 μg/m3 (54) 53.0 μg/m3 (144) 144.0
 
Jan. 26, 2020, 2 p.m. 21.7 ppb (20) 1.6 ppb (1) 25.9 ppb (24) 20.0 ppb (19) 25.7 ppb (24) N/A 9.0 ppb (7) 0.45 ppb (5) 70.0 μg/m3 (58) 56.0 μg/m3 (150) 150.0
 
Jan. 26, 2020, 1 p.m. 19.7 ppb (18) 1.4 ppb (1) 21.8 ppb (20) 18.0 ppb (17) 21.8 ppb (20) N/A 11.0 ppb (8) 0.45 ppb (5) 65.0 μg/m3 (55) 54.0 μg/m3 (146) 146.0
 
Jan. 26, 2020, noon 17.9 ppb (17) 1.6 ppb (1) 22.0 ppb (20) 16.0 ppb (15) 21.9 ppb (20) N/A 13.0 ppb (10) 0.43 ppb (5) 62.0 μg/m3 (54) 50.0 μg/m3 (136) 136.0
 
Jan. 26, 2020, 11 a.m. 19.6 ppb (18) 1.5 ppb (1) 21.4 ppb (20) 18.0 ppb (17) 21.3 ppb (20) N/A 12.0 ppb (9) 0.42 ppb (5) 67.0 μg/m3 (56) 54.0 μg/m3 (146) 146.0
 
Jan. 26, 2020, 10 a.m. 17.6 ppb (16) 1.4 ppb (1) 20.1 ppb (19) 16.0 ppb (15) 20.1 ppb (19) N/A 15.0 ppb (12) 0.36 ppb (4) 61.0 μg/m3 (53) 45.0 μg/m3 (124) 124.0
 
Jan. 26, 2020, 9 a.m. 20.0 ppb (19) 1.6 ppb (1) 18.7 ppb (17) 18.0 ppb (17) 18.7 ppb (17) N/A 15.0 ppb (12) 0.33 ppb (4) 56.0 μg/m3 (50) 42.0 μg/m3 (116) 116.0
 
Jan. 26, 2020, 8 a.m. 18.1 ppb (17) 1.5 ppb (1) 18.4 ppb (17) 17.0 ppb (16) 18.4 ppb (17) N/A 18.0 ppb (14) 0.31 ppb (3) 43.0 μg/m3 (39) 37.0 μg/m3 (104) 104.0
 
Jan. 26, 2020, 7 a.m. 16.2 ppb (15) 1.3 ppb (1) 18.4 ppb (17) 15.0 ppb (14) 18.4 ppb (17) N/A 20.0 ppb (15) 0.32 ppb (4) 40.0 μg/m3 (36) 35.0 μg/m3 (99) 99.0
 
Jan. 26, 2020, 6 a.m. 21.4 ppb (20) 1.9 ppb (2) 24.1 ppb (22) 19.0 ppb (18) 23.9 ppb (22) N/A 15.0 ppb (12) 0.39 ppb (4) 45.0 μg/m3 (41) 34.0 μg/m3 (97) 97.0
 
Jan. 26, 2020, 5 a.m. 44.6 ppb (41) 8.1 ppb (8) 44.6 ppb (41) 36.0 ppb (33) 38.8 ppb (36) N/A 3.0 ppb (2) 0.62 ppb (7) 48.0 μg/m3 (44) 30.0 μg/m3 (88) 88.0
 
Jan. 26, 2020, 4 a.m. 52.3 ppb (48) 12.4 ppb (11) 55.3 ppb (51) 40.0 ppb (37) 45.5 ppb (42) N/A 1.0 ppb (1) 0.79 ppb (9) 66.0 μg/m3 (56) 42.0 μg/m3 (116) 116.0
 
Jan. 26, 2020, 3 a.m. 40.5 ppb (38) 3.9 ppb (4) 43.8 ppb (41) 37.0 ppb (34) 41.5 ppb (38) N/A 4.0 ppb (3) 0.67 ppb (7) 64.0 μg/m3 (54) 47.0 μg/m3 (129) 129.0
 
Jan. 26, 2020, 2 a.m. 38.9 ppb (36) 2.2 ppb (2) 40.9 ppb (38) 37.0 ppb (34) 40.5 ppb (38) N/A 7.0 ppb (5) 0.65 ppb (7) 60.0 μg/m3 (52) 44.0 μg/m3 (121) 121.0
 
Jan. 26, 2020, 1 a.m. 37.3 ppb (35) 1.9 ppb (2) 39.0 ppb (36) 35.0 ppb (32) 38.5 ppb (36) N/A 12.0 ppb (9) 0.58 ppb (6) 58.0 μg/m3 (52) 40.0 μg/m3 (111) 111.0
 
Jan. 26, 2020, midnight 35.5 ppb (33) 4.6 ppb (4) 37.2 ppb (34) 31.0 ppb (29) 33.5 ppb (31) N/A 16.0 ppb (12) 0.53 ppb (6) 61.0 μg/m3 (53) 43.0 μg/m3 (119) 119.0
 
Jan. 25, 2020, 11 p.m. 46.0 ppb (43) 11.0 ppb (10) 46.9 ppb (43) 35.0 ppb (32) 36.7 ppb (34) N/A 16.0 ppb (12) 0.62 ppb (7) 67.0 μg/m3 (56) 40.0 μg/m3 (111) 111.0
 
Jan. 25, 2020, 10 p.m. 43.3 ppb (40) 8.8 ppb (8) 44.4 ppb (41) 34.0 ppb (31) 36.0 ppb (33) N/A 24.0 ppb (18) 0.71 ppb (8) 50.0 μg/m3 (45) 31.0 μg/m3 (90) 90.0
 
Jan. 25, 2020, 9 p.m. 45.6 ppb (42) 12.4 ppb (11) 46.6 ppb (43) 33.0 ppb (31) 34.7 ppb (32) N/A 24.0 ppb (18) 0.78 ppb (9) 46.0 μg/m3 (42) 22.0 μg/m3 (71) 71.0
 
Jan. 25, 2020, 8 p.m. 59.4 ppb (56) 22.1 ppb (20) 58.8 ppb (55) 37.0 ppb (34) 37.7 ppb (35) N/A 17.0 ppb (13) 0.8 ppb (9) 51.0 μg/m3 (46) 33.0 μg/m3 (95) 95.0
 
Jan. 25, 2020, 7 p.m. 70.4 ppb (67) 32.0 ppb (30) 68.5 ppb (65) 38.0 ppb (35) 38.3 ppb (35) N/A 12.0 ppb (9) 0.8 ppb (9) 48.0 μg/m3 (44) 33.0 μg/m3 (95) 95.0
 
Jan. 25, 2020, 6 p.m. 100.0 ppb (99) 57.8 ppb (54) 96.2 ppb (95) 42.0 ppb (39) 41.6 ppb (39) N/A 7.0 ppb (5) 1.04 ppb (12) 54.0 μg/m3 (49) 35.0 μg/m3 (99) 99.0
 
Jan. 25, 2020, 5 p.m. 138.0 ppb (107) 95.4 ppb (94) 130.5 ppb (106) 43.0 ppb (40) 41.7 ppb (39) N/A 3.0 ppb (2) 1.38 ppb (15) 58.0 μg/m3 (52) 31.0 μg/m3 (90) 107.0
 
Jan. 25, 2020, 4 p.m. 124.1 ppb (104) 94.5 ppb (93) 116.7 ppb (103) 30.0 ppb (28) 30.2 ppb (28) N/A 1.0 ppb (1) 1.34 ppb (15) 49.0 μg/m3 (45) 23.0 μg/m3 (73) 104.0
 
Jan. 25, 2020, 3 p.m. 108.9 ppb (102) 85.7 ppb (84) 102.5 ppb (100) 23.0 ppb (21) 23.6 ppb (22) N/A 0.0 ppb (0) 1.27 ppb (14) 30.0 μg/m3 (27) 17.0 μg/m3 (61) 102.0
 
Jan. 25, 2020, 2 p.m. 82.1 ppb (80) 60.3 ppb (57) 76.8 ppb (74) 22.0 ppb (20) 21.9 ppb (20) N/A 0.0 ppb (0) 1.04 ppb (12) 27.0 μg/m3 (25) 9.0 μg/m3 (38) 80.0
 
Jan. 25, 2020, 1 p.m. 86.2 ppb (84) 64.2 ppb (61) 73.8 ppb (71) 22.0 ppb (20) 19.3 ppb (18) N/A 0.0 ppb (0) 1.22 ppb (14) 27.0 μg/m3 (25) 16.0 μg/m3 (59) 84.0
 
Jan. 25, 2020, noon 83.4 ppb (81) 57.9 ppb (54) 74.0 ppb (71) 26.0 ppb (24) 26.1 ppb (24) N/A 0.0 ppb (0) 1.09 ppb (12) 22.0 μg/m3 (20) 20.0 μg/m3 (67) 81.0
 
Jan. 25, 2020, 11 a.m. 72.8 ppb (70) 48.9 ppb (45) 66.5 ppb (63) 24.0 ppb (22) 23.2 ppb (21) N/A 0.0 ppb (0) 1.04 ppb (12) 25.0 μg/m3 (23) 19.0 μg/m3 (65) 70.0
 
Jan. 25, 2020, 10 a.m. 78.1 ppb (76) 51.3 ppb (48) 69.1 ppb (66) 27.0 ppb (25) 30.9 ppb (29) N/A 0.0 ppb (0) 1.0 ppb (11) 22.0 μg/m3 (20) 17.0 μg/m3 (61) 76.0
 
Jan. 25, 2020, 9 a.m. 81.2 ppb (79) 53.5 ppb (50) 72.2 ppb (69) 28.0 ppb (26) 29.2 ppb (27) N/A 0.0 ppb (0) 1.09 ppb (12) 36.0 μg/m3 (33) 18.0 μg/m3 (63) 79.0
 
Jan. 25, 2020, 8 a.m. 82.2 ppb (80) 53.6 ppb (50) 85.9 ppb (84) 29.0 ppb (27) 37.2 ppb (34) N/A 0.0 ppb (0) 1.07 ppb (12) 27.0 μg/m3 (25) 18.0 μg/m3 (63) 84.0
 
Jan. 25, 2020, 7 a.m. 90.5 ppb (89) 57.5 ppb (54) 97.8 ppb (97) 33.0 ppb (31) 43.9 ppb (41) N/A 0.0 ppb (0) 0.81 ppb (9) 19.0 μg/m3 (17) 19.0 μg/m3 (65) 97.0
 
Jan. 25, 2020, 6 a.m. 71.2 ppb (68) 39.2 ppb (36) 76.0 ppb (73) 32.0 ppb (30) 41.9 ppb (39) N/A 0.0 ppb (0) 0.79 ppb (9) 25.0 μg/m3 (23) 21.0 μg/m3 (69) 73.0
 
Jan. 25, 2020, 5 a.m. 58.9 ppb (55) 24.9 ppb (23) 58.1 ppb (54) 34.0 ppb (31) 34.9 ppb (32) N/A 0.0 ppb (0) 0.68 ppb (8) 48.0 μg/m3 (44) 25.0 μg/m3 (78) 78.0
 
Jan. 25, 2020, 4 a.m. 57.8 ppb (54) 21.4 ppb (20) 54.4 ppb (50) 36.0 ppb (33) 36.1 ppb (33) N/A 0.0 ppb (0) 0.72 ppb (8) 38.0 μg/m3 (35) 20.0 μg/m3 (67) 67.0
 
Jan. 25, 2020, 3 a.m. 52.1 ppb (48) 13.1 ppb (12) 48.0 ppb (44) 39.0 ppb (36) 37.6 ppb (35) N/A 1.0 ppb (1) 0.56 ppb (6) 35.0 μg/m3 (32) 16.0 μg/m3 (59) 59.0
 
Jan. 25, 2020, 2 a.m. 41.3 ppb (38) 4.1 ppb (4) 37.1 ppb (34) 37.0 ppb (34) 34.9 ppb (32) N/A 6.0 ppb (5) 0.67 ppb (7) 34.0 μg/m3 (31) 17.0 μg/m3 (61) 61.0
 
Jan. 25, 2020, 1 a.m. 37.3 ppb (35) 2.0 ppb (2) 33.9 ppb (31) 35.0 ppb (32) 32.9 ppb (30) N/A 13.0 ppb (10) 0.57 ppb (6) 35.0 μg/m3 (32) 12.0 μg/m3 (50) 50.0
 
Jan. 25, 2020, midnight 30.4 ppb (28) 3.4 ppb (3) 27.1 ppb (25) 27.0 ppb (25) 24.4 ppb (23) N/A 20.0 ppb (15) 0.47 ppb (5) 30.0 μg/m3 (27) 17.0 μg/m3 (61) 61.0
 
Jan. 24, 2020, 11 p.m. 43.0 ppb (40) 9.7 ppb (9) 38.8 ppb (36) 33.0 ppb (31) 30.4 ppb (28) N/A 18.0 ppb (14) 0.53 ppb (6) 38.0 μg/m3 (35) 15.0 μg/m3 (56) 56.0
 
Jan. 24, 2020, 10 p.m. 52.0 ppb (48) 14.9 ppb (14) 47.2 ppb (44) 37.0 ppb (34) 33.7 ppb (31) N/A 18.0 ppb (14) 0.61 ppb (7) 40.0 μg/m3 (36) 17.0 μg/m3 (61) 61.0
 
Jan. 24, 2020, 9 p.m. 52.9 ppb (49) 16.3 ppb (15) 47.9 ppb (44) 37.0 ppb (34) 33.4 ppb (31) N/A 18.0 ppb (14) 0.66 ppb (7) 40.0 μg/m3 (36) 13.0 μg/m3 (52) 52.0
 
Jan. 24, 2020, 8 p.m. 77.9 ppb (75) 33.8 ppb (31) 70.3 ppb (67) 44.0 ppb (41) 39.9 ppb (37) N/A 13.0 ppb (10) 0.66 ppb (7) 49.0 μg/m3 (45) 19.0 μg/m3 (65) 75.0
 
Jan. 24, 2020, 7 p.m. 55.5 ppb (52) 25.5 ppb (24) 47.0 ppb (44) 30.0 ppb (28) 26.1 ppb (24) N/A 15.0 ppb (12) 0.48 ppb (5) 21.0 μg/m3 (19) 7.0 μg/m3 (29) 52.0
 
Jan. 24, 2020, 6 p.m. 50.5 ppb (47) 24.1 ppb (22) 41.0 ppb (38) 26.0 ppb (24) 22.5 ppb (21) N/A 14.0 ppb (11) 0.42 ppb (5) 26.0 μg/m3 (24) 8.0 μg/m3 (33) 47.0
 
Jan. 24, 2020, 5 p.m. 92.6 ppb (91) 57.2 ppb (53) 78.4 ppb (76) 35.0 ppb (32) 31.2 ppb (29) N/A 6.0 ppb (5) 0.81 ppb (9) 27.0 μg/m3 (25) 8.0 μg/m3 (33) 91.0
 
Jan. 24, 2020, 4 p.m. 171.3 ppb (114) 132.5 ppb (106) 149.3 ppb (109) 39.0 ppb (36) 33.3 ppb (31) N/A 1.0 ppb (1) 1.34 ppb (15) 52.0 μg/m3 (47) 15.0 μg/m3 (56) 114.0
 
Jan. 24, 2020, 3 p.m. 149.5 ppb (109) 114.6 ppb (103) 135.5 ppb (107) 35.0 ppb (32) 30.2 ppb (28) N/A 0.0 ppb (0) 1.18 ppb (13) 38.0 μg/m3 (35) 12.0 μg/m3 (50) 109.0
 
Jan. 24, 2020, 2 p.m. 125.3 ppb (105) 91.4 ppb (90) 110.6 ppb (102) 34.0 ppb (31) 27.9 ppb (26) N/A 0.0 ppb (0) 1.01 ppb (11) 32.0 μg/m3 (29) 12.0 μg/m3 (50) 105.0
 
Jan. 24, 2020, 1 p.m. 84.0 ppb (82) 52.6 ppb (49) 73.3 ppb (71) 31.0 ppb (29) 23.5 ppb (22) N/A 0.0 ppb (0) 0.69 ppb (8) 25.0 μg/m3 (23) 7.0 μg/m3 (29) 82.0
 
Jan. 24, 2020, noon 67.3 ppb (64) 36.0 ppb (33) 57.3 ppb (54) 31.0 ppb (29) 27.0 ppb (25) N/A 0.0 ppb (0) 0.63 ppb (7) 20.0 μg/m3 (18) 8.0 μg/m3 (33) 64.0
 
Jan. 24, 2020, 11 a.m. 58.1 ppb (54) 27.6 ppb (26) 40.7 ppb (38) 30.0 ppb (28) 25.9 ppb (24) N/A 0.0 ppb (0) 0.62 ppb (7) 20.0 μg/m3 (18) 11.0 μg/m3 (46) 54.0
 
Jan. 24, 2020, 10 a.m. 75.8 ppb (73) 46.9 ppb (43) 74.5 ppb (72) 29.0 ppb (27) 26.5 ppb (25) N/A 0.0 ppb (0) 0.82 ppb (9) 26.0 μg/m3 (24) 11.0 μg/m3 (46) 73.0
 
Jan. 24, 2020, 9 a.m. 88.2 ppb (86) 58.9 ppb (55) 70.8 ppb (68) 29.0 ppb (27) 23.6 ppb (22) N/A 0.0 ppb (0) 1.0 ppb (11) 33.0 μg/m3 (30) 17.0 μg/m3 (61) 86.0
 
Jan. 24, 2020, 8 a.m. 83.3 ppb (81) 53.2 ppb (49) 81.2 ppb (79) 30.0 ppb (28) 29.3 ppb (27) N/A 0.0 ppb (0) 1.11 ppb (12) 33.0 μg/m3 (30) 16.0 μg/m3 (59) 81.0
 
Jan. 24, 2020, 7 a.m. 91.0 ppb (89) 59.8 ppb (56) 86.4 ppb (84) 31.0 ppb (29) 30.5 ppb (28) N/A 0.0 ppb (0) 1.22 ppb (14) 36.0 μg/m3 (33) 16.0 μg/m3 (59) 89.0
 
Jan. 24, 2020, 6 a.m. 97.6 ppb (96) 64.5 ppb (61) 90.1 ppb (88) 33.0 ppb (31) 32.5 ppb (30) N/A 0.0 ppb (0) 1.28 ppb (14) 37.0 μg/m3 (34) 14.0 μg/m3 (54) 96.0
 
Jan. 24, 2020, 5 a.m. 95.7 ppb (94) 62.8 ppb (59) 89.6 ppb (88) 33.0 ppb (31) 31.9 ppb (30) N/A 0.0 ppb (0) 1.33 ppb (15) 35.0 μg/m3 (32) 17.0 μg/m3 (61) 94.0
 
Jan. 24, 2020, 4 a.m. 77.8 ppb (75) 44.3 ppb (41) 72.0 ppb (69) 34.0 ppb (31) 32.4 ppb (30) N/A 0.0 ppb (0) 1.14 ppb (13) 39.0 μg/m3 (35) 14.0 μg/m3 (54) 75.0
 
Jan. 24, 2020, 3 a.m. 46.4 ppb (43) 12.8 ppb (12) 37.4 ppb (35) 34.0 ppb (31) 31.3 ppb (29) N/A 1.0 ppb (1) 0.75 ppb (8) 27.0 μg/m3 (25) 9.0 μg/m3 (38) 43.0
 
Jan. 24, 2020, 2 a.m. 44.0 ppb (41) 8.8 ppb (8) 36.9 ppb (34) 35.0 ppb (32) 32.2 ppb (30) N/A 4.0 ppb (3) 0.56 ppb (6) 25.0 μg/m3 (23) 8.0 μg/m3 (33) 41.0
 
Jan. 24, 2020, 1 a.m. 24.2 ppb (22) 3.1 ppb (3) 18.7 ppb (17) 21.0 ppb (19) 18.1 ppb (17) N/A 19.0 ppb (15) 0.39 ppb (4) 21.0 μg/m3 (19) 7.0 μg/m3 (29) 29.0
 
Jan. 24, 2020, midnight 17.5 ppb (16) 3.9 ppb (4) 12.1 ppb (11) 14.0 ppb (13) 10.8 ppb (10) N/A 29.0 ppb (22) 0.29 ppb (3) 21.0 μg/m3 (19) 4.0 μg/m3 (17) 22.0
 
Jan. 23, 2020, 11 p.m. 23.3 ppb (22) 8.5 ppb (8) 15.0 ppb (14) 15.0 ppb (14) 10.6 ppb (10) N/A 30.0 ppb (23) 0.28 ppb (3) 17.0 μg/m3 (15) 5.0 μg/m3 (21) 23.0
 
Jan. 23, 2020, 10 p.m. 32.5 ppb (30) 18.5 ppb (17) 13.8 ppb (13) 14.0 ppb (13) 9.5 ppb (9) N/A 31.0 ppb (24) 0.29 ppb (3) 22.0 μg/m3 (20) 7.0 μg/m3 (29) 30.0
 
Jan. 23, 2020, 9 p.m. 37.7 ppb (35) 22.3 ppb (21) 15.5 ppb (14) 15.0 ppb (14) 10.2 ppb (9) N/A 30.0 ppb (23) 0.32 ppb (4) 20.0 μg/m3 (18) 8.0 μg/m3 (33) 35.0
 
Jan. 23, 2020, 8 p.m. 29.9 ppb (28) 8.7 ppb (8) 27.5 ppb (25) 21.0 ppb (19) 19.2 ppb (18) N/A 25.0 ppb (19) 0.45 ppb (5) 22.0 μg/m3 (20) 10.0 μg/m3 (42) 42.0
 
Jan. 23, 2020, 7 p.m. 55.4 ppb (51) 24.3 ppb (23) 51.6 ppb (48) 31.0 ppb (29) 27.7 ppb (26) N/A 16.0 ppb (12) 0.58 ppb (6) 40.0 μg/m3 (36) 15.0 μg/m3 (56) 56.0
 
Jan. 23, 2020, 6 p.m. 66.4 ppb (63) 33.3 ppb (31) 59.9 ppb (56) 33.0 ppb (31) 29.0 ppb (27) N/A 10.0 ppb (8) 0.57 ppb (6) 35.0 μg/m3 (32) 16.0 μg/m3 (59) 63.0
 
Jan. 23, 2020, 5 p.m. 78.8 ppb (76) 44.4 ppb (41) 69.6 ppb (67) 34.0 ppb (31) 26.8 ppb (25) N/A 6.0 ppb (5) 0.74 ppb (8) 39.0 μg/m3 (35) 15.0 μg/m3 (56) 76.0
 
Jan. 23, 2020, 4 p.m. 125.0 ppb (105) 92.0 ppb (90) 114.8 ppb (103) 33.0 ppb (31) 30.6 ppb (28) N/A 2.0 ppb (2) 1.06 ppb (12) 43.0 μg/m3 (39) 18.0 μg/m3 (63) 105.0
 
Jan. 23, 2020, 3 p.m. 146.0 ppb (109) 115.6 ppb (103) 134.9 ppb (107) 30.0 ppb (28) 27.4 ppb (25) N/A 1.0 ppb (1) 1.24 ppb (14) 46.0 μg/m3 (42) 18.0 μg/m3 (63) 109.0
 
Jan. 23, 2020, 2 p.m. 109.3 ppb (102) 81.0 ppb (79) 100.1 ppb (99) 28.0 ppb (26) 24.3 ppb (23) N/A 0.0 ppb (0) 1.04 ppb (12) 35.0 μg/m3 (32) 12.0 μg/m3 (50) 102.0
 
Jan. 23, 2020, 1 p.m. 77.8 ppb (75) 49.2 ppb (46) 72.9 ppb (70) 29.0 ppb (27) 22.6 ppb (21) N/A 0.0 ppb (0) 0.77 ppb (9) 34.0 μg/m3 (31) 14.0 μg/m3 (54) 75.0
 
Jan. 23, 2020, noon 51.8 ppb (48) 23.4 ppb (22) 44.0 ppb (41) 28.0 ppb (26) 26.7 ppb (25) N/A 0.0 ppb (0) 0.6 ppb (7) 27.0 μg/m3 (25) 11.0 μg/m3 (46) 48.0
 
Jan. 23, 2020, 11 a.m. 39.9 ppb (37) 12.1 ppb (11) 36.3 ppb (34) 28.0 ppb (26) 25.3 ppb (23) N/A 0.0 ppb (0) 0.54 ppb (6) 29.0 μg/m3 (26) 13.0 μg/m3 (52) 52.0
 
Jan. 23, 2020, 10 a.m. 42.6 ppb (39) 16.1 ppb (15) 41.6 ppb (39) 27.0 ppb (25) 25.9 ppb (24) N/A 0.0 ppb (0) 0.59 ppb (7) 32.0 μg/m3 (29) 16.0 μg/m3 (59) 59.0
 
Jan. 23, 2020, 9 a.m. 54.7 ppb (51) 27.0 ppb (25) 50.9 ppb (47) 28.0 ppb (26) 26.4 ppb (24) N/A 0.0 ppb (0) 0.78 ppb (9) 36.0 μg/m3 (33) 18.0 μg/m3 (63) 63.0
 
Jan. 23, 2020, 8 a.m. 64.1 ppb (61) 38.9 ppb (36) 65.4 ppb (62) 25.0 ppb (23) 26.1 ppb (24) N/A 0.0 ppb (0) 0.95 ppb (11) 39.0 μg/m3 (35) 21.0 μg/m3 (69) 69.0
 
Jan. 23, 2020, 7 a.m. 59.7 ppb (56) 31.9 ppb (30) 63.7 ppb (60) 28.0 ppb (26) 28.1 ppb (26) N/A 0.0 ppb (0) 0.95 ppb (11) 36.0 μg/m3 (33) 16.0 μg/m3 (59) 60.0
 
Jan. 23, 2020, 6 a.m. 65.1 ppb (62) 34.5 ppb (32) 61.2 ppb (58) 31.0 ppb (29) 30.9 ppb (29) N/A 0.0 ppb (0) 0.97 ppb (11) 35.0 μg/m3 (32) 19.0 μg/m3 (65) 65.0
 
Jan. 23, 2020, 5 a.m. 58.4 ppb (55) 23.7 ppb (22) 55.1 ppb (51) 35.0 ppb (32) 33.7 ppb (31) N/A 0.0 ppb (0) 0.84 ppb (9) 33.0 μg/m3 (30) 13.0 μg/m3 (52) 55.0
 
Jan. 23, 2020, 4 a.m. 36.7 ppb (34) 5.6 ppb (5) 34.4 ppb (32) 31.0 ppb (29) 30.3 ppb (28) N/A 6.0 ppb (5) 0.64 ppb (7) 31.0 μg/m3 (28) 16.0 μg/m3 (59) 59.0
 
Jan. 23, 2020, 3 a.m. 32.0 ppb (30) 2.7 ppb (3) 29.6 ppb (27) 29.0 ppb (27) 27.9 ppb (26) N/A 9.0 ppb (7) 0.57 ppb (6) 29.0 μg/m3 (26) 15.0 μg/m3 (56) 56.0
 
Jan. 23, 2020, 2 a.m. 24.1 ppb (22) 1.1 ppb (1) 22.0 ppb (20) 23.0 ppb (21) 21.6 ppb (20) N/A 18.0 ppb (14) 0.44 ppb (5) 32.0 μg/m3 (29) 11.0 μg/m3 (46) 46.0
 
Jan. 23, 2020, 1 a.m. 28.3 ppb (26) 1.2 ppb (1) 25.9 ppb (24) 27.0 ppb (25) 25.4 ppb (24) N/A 17.0 ppb (13) 0.41 ppb (5) 30.0 μg/m3 (27) 12.0 μg/m3 (50) 50.0
 
Jan. 23, 2020, midnight 27.5 ppb (25) 2.6 ppb (2) 25.5 ppb (24) 25.0 ppb (23) 23.2 ppb (21) N/A 21.0 ppb (16) 0.37 ppb (4) 34.0 μg/m3 (31) 12.0 μg/m3 (50) 50.0
 
Jan. 22, 2020, 11 p.m. 28.4 ppb (26) 4.9 ppb (5) 26.9 ppb (25) 23.0 ppb (21) 22.1 ppb (20) N/A 24.0 ppb (18) 0.4 ppb (4) 38.0 μg/m3 (35) 17.0 μg/m3 (61) 61.0
 
Jan. 22, 2020, 10 p.m. 29.6 ppb (27) 7.1 ppb (7) 28.8 ppb (27) 23.0 ppb (21) 21.2 ppb (20) N/A 24.0 ppb (18) 0.35 ppb (4) 34.0 μg/m3 (31) 15.0 μg/m3 (56) 56.0
 
Jan. 22, 2020, 9 p.m. 18.9 ppb (18) 4.6 ppb (4) 18.1 ppb (17) 14.0 ppb (13) 13.4 ppb (12) N/A 27.0 ppb (21) 0.26 ppb (3) 22.0 μg/m3 (20) 8.0 μg/m3 (33) 33.0
 
Jan. 22, 2020, 8 p.m. 15.6 ppb (14) 4.2 ppb (4) 14.5 ppb (13) 11.0 ppb (10) 10.7 ppb (10) N/A 28.0 ppb (22) 0.24 ppb (3) 30.0 μg/m3 (27) 11.0 μg/m3 (46) 46.0
 
Jan. 22, 2020, 7 p.m. N/A N/A 14.9 ppb (14) N/A 9.7 ppb (9) N/A N/A 0.23 ppb (3) 26.0 μg/m3 (24) 11.0 μg/m3 (46) 46.0
 
Jan. 22, 2020, 6 p.m. 18.0 ppb (17) 5.7 ppb (5) 15.6 ppb (14) 12.0 ppb (11) 11.4 ppb (11) N/A 24.0 ppb (18) 0.25 ppb (3) 36.0 μg/m3 (33) 11.0 μg/m3 (46) 46.0
 
Jan. 22, 2020, 5 p.m. 43.9 ppb (41) 23.3 ppb (22) 40.4 ppb (37) 21.0 ppb (19) 18.5 ppb (17) N/A 12.0 ppb (9) N/A 34.0 μg/m3 (31) 15.0 μg/m3 (56) 56.0
 
Jan. 22, 2020, 4 p.m. 87.2 ppb (85) 61.4 ppb (58) 80.7 ppb (78) 26.0 ppb (24) 24.3 ppb (23) N/A 2.0 ppb (2) 0.84 ppb (9) 42.0 μg/m3 (38) 18.0 μg/m3 (63) 85.0
 
Jan. 22, 2020, 3 p.m. 78.0 ppb (76) 54.2 ppb (50) 71.8 ppb (69) 24.0 ppb (22) 22.4 ppb (21) N/A 0.0 ppb (0) 0.75 ppb (8) 31.0 μg/m3 (28) 14.0 μg/m3 (54) 76.0
 
Jan. 22, 2020, 2 p.m. 89.5 ppb (88) 66.2 ppb (63) 80.2 ppb (78) 23.0 ppb (21) 19.1 ppb (18) N/A 0.0 ppb (0) 0.86 ppb (10) 30.0 μg/m3 (27) 12.0 μg/m3 (50) 88.0
 
Jan. 22, 2020, 1 p.m. 66.9 ppb (64) 44.7 ppb (41) 56.9 ppb (53) 22.0 ppb (20) 16.8 ppb (16) N/A 0.0 ppb (0) 0.56 ppb (6) 29.0 μg/m3 (26) 12.0 μg/m3 (50) 64.0
 
Jan. 22, 2020, noon 49.0 ppb (45) 26.5 ppb (25) 44.3 ppb (41) 23.0 ppb (21) 20.1 ppb (19) N/A 0.0 ppb (0) 0.54 ppb (6) 26.0 μg/m3 (24) 12.0 μg/m3 (50) 50.0
 
Jan. 22, 2020, 11 a.m. 32.9 ppb (30) 9.5 ppb (9) 29.8 ppb (28) 23.0 ppb (21) 19.7 ppb (18) N/A 1.0 ppb (1) 0.45 ppb (5) 22.0 μg/m3 (20) 11.0 μg/m3 (46) 46.0
 
Jan. 22, 2020, 10 a.m. 28.5 ppb (26) 5.3 ppb (5) 25.1 ppb (23) 23.0 ppb (21) 21.4 ppb (20) N/A 1.0 ppb (1) 0.43 ppb (5) 19.0 μg/m3 (17) 7.0 μg/m3 (29) 29.0
 
Jan. 22, 2020, 9 a.m. 28.1 ppb (26) 3.7 ppb (3) 24.4 ppb (23) 24.0 ppb (22) 21.4 ppb (20) N/A 3.0 ppb (2) 0.44 ppb (5) 17.0 μg/m3 (15) 6.0 μg/m3 (25) 26.0
 
Jan. 22, 2020, 8 a.m. 23.7 ppb (22) 1.3 ppb (1) 18.8 ppb (17) 22.0 ppb (20) 18.5 ppb (17) N/A 9.0 ppb (7) 0.42 ppb (5) 18.0 μg/m3 (16) 6.0 μg/m3 (25) 25.0
 
Jan. 22, 2020, 7 a.m. 20.3 ppb (19) 1.6 ppb (1) 17.6 ppb (16) 19.0 ppb (18) 16.9 ppb (16) N/A 14.0 ppb (11) 0.33 ppb (4) 14.0 μg/m3 (13) 7.0 μg/m3 (29) 29.0
 
Jan. 22, 2020, 6 a.m. 23.7 ppb (22) 2.7 ppb (3) 21.7 ppb (20) 21.0 ppb (19) 20.0 ppb (19) N/A 12.0 ppb (9) 0.43 ppb (5) 16.0 μg/m3 (15) 8.0 μg/m3 (33) 33.0
 
Jan. 22, 2020, 5 a.m. 27.1 ppb (25) 2.7 ppb (3) 24.6 ppb (23) 24.0 ppb (22) 22.8 ppb (21) N/A 8.0 ppb (6) 0.54 ppb (6) 28.0 μg/m3 (25) 12.0 μg/m3 (50) 50.0
 
Jan. 22, 2020, 4 a.m. 18.9 ppb (18) 1.2 ppb (1) 14.8 ppb (14) 18.0 ppb (17) 14.4 ppb (13) N/A 17.0 ppb (13) 0.43 ppb (5) 21.0 μg/m3 (19) 5.0 μg/m3 (21) 21.0
 
Jan. 22, 2020, 3 a.m. 8.3 ppb (8) 0.3 ppb (0) 5.7 ppb (5) 8.0 ppb (7) 5.7 ppb (5) N/A 30.0 ppb (23) 0.2 ppb (2) 10.0 μg/m3 (9) 7.0 μg/m3 (29) 29.0
 
Jan. 22, 2020, 2 a.m. 7.7 ppb (7) 0.3 ppb (0) 5.3 ppb (5) 7.0 ppb (6) 5.3 ppb (5) N/A 32.0 ppb (25) 0.21 ppb (2) 10.0 μg/m3 (9) 5.0 μg/m3 (21) 25.0
 
Jan. 22, 2020, 1 a.m. 9.1 ppb (8) 0.4 ppb (0) 6.6 ppb (6) 9.0 ppb (8) 6.4 ppb (6) N/A 32.0 ppb (25) 0.2 ppb (2) 12.0 μg/m3 (11) 4.0 μg/m3 (17) 25.0
 
Jan. 22, 2020, midnight 9.4 ppb (9) 0.5 ppb (0) 6.8 ppb (6) 9.0 ppb (8) 6.4 ppb (6) N/A 33.0 ppb (25) 0.19 ppb (2) 11.0 μg/m3 (10) 6.0 μg/m3 (25) 25.0
 
Jan. 21, 2020, 11 p.m. 12.2 ppb (11) 2.0 ppb (2) 9.1 ppb (8) 10.0 ppb (9) 7.4 ppb (7) N/A 34.0 ppb (26) 0.2 ppb (2) 12.0 μg/m3 (11) 5.0 μg/m3 (21) 26.0
 
Jan. 21, 2020, 10 p.m. 11.2 ppb (10) 2.6 ppb (2) 8.9 ppb (8) 9.0 ppb (8) 6.7 ppb (6) N/A 35.0 ppb (27) 0.18 ppb (2) 13.0 μg/m3 (12) 5.0 μg/m3 (21) 27.0
 
Jan. 21, 2020, 9 p.m. N/A N/A 10.2 ppb (9) N/A 7.6 ppb (7) N/A N/A 0.19 ppb (2) 16.0 μg/m3 (15) 8.0 μg/m3 (33) 33.0
 
Jan. 21, 2020, 8 p.m. N/A N/A 14.8 ppb (14) N/A 9.7 ppb (9) N/A N/A 0.22 ppb (2) 18.0 μg/m3 (16) 7.0 μg/m3 (29) 29.0
 
Jan. 21, 2020, 7 p.m. N/A N/A 16.9 ppb (16) N/A 13.1 ppb (12) N/A N/A 0.28 ppb (3) 22.0 μg/m3 (20) 9.0 μg/m3 (38) 38.0
 
Jan. 21, 2020, 6 p.m. 33.7 ppb (31) 8.9 ppb (8) 30.5 ppb (28) 25.0 ppb (23) 22.3 ppb (21) N/A 14.0 ppb (11) 0.44 ppb (5) 28.0 μg/m3 (25) 10.0 μg/m3 (42) 42.0
 
Jan. 21, 2020, 5 p.m. 37.3 ppb (35) 13.0 ppb (12) 33.5 ppb (31) 24.0 ppb (22) 22.4 ppb (21) N/A 9.0 ppb (7) 0.47 ppb (5) 28.0 μg/m3 (25) 16.0 μg/m3 (59) 59.0
 
Jan. 21, 2020, 4 p.m. 45.2 ppb (42) 17.4 ppb (16) 40.8 ppb (38) 28.0 ppb (26) 25.8 ppb (24) N/A 3.0 ppb (2) 0.6 ppb (7) 22.0 μg/m3 (20) 15.0 μg/m3 (56) 56.0
 
Jan. 21, 2020, 3 p.m. 61.0 ppb (57) 31.6 ppb (29) 54.2 ppb (50) 29.0 ppb (27) 27.6 ppb (26) N/A 1.0 ppb (1) 0.74 ppb (8) 22.0 μg/m3 (20) 13.0 μg/m3 (52) 57.0
 
Jan. 21, 2020, 2 p.m. 50.8 ppb (47) 21.9 ppb (20) 42.1 ppb (39) 29.0 ppb (27) 24.8 ppb (23) N/A 1.0 ppb (1) 0.54 ppb (6) 19.0 μg/m3 (17) 15.0 μg/m3 (56) 56.0
 
Jan. 21, 2020, 1 p.m. 29.0 ppb (27) 5.1 ppb (5) 23.8 ppb (22) 24.0 ppb (22) 19.7 ppb (18) N/A 5.0 ppb (4) 0.45 ppb (5) 18.0 μg/m3 (16) 13.0 μg/m3 (52) 52.0
 
Jan. 21, 2020, noon 26.2 ppb (24) 5.3 ppb (5) 23.0 ppb (21) 21.0 ppb (19) 18.4 ppb (17) N/A 4.0 ppb (3) 0.51 ppb (6) 25.0 μg/m3 (23) 13.0 μg/m3 (52) 52.0
 
Jan. 21, 2020, 11 a.m. 26.2 ppb (24) 3.0 ppb (3) 21.1 ppb (20) 23.0 ppb (21) 19.5 ppb (18) N/A 4.0 ppb (3) 0.4 ppb (4) 25.0 μg/m3 (23) 13.0 μg/m3 (52) 52.0
 
Jan. 21, 2020, 10 a.m. 26.1 ppb (24) 2.2 ppb (2) 23.5 ppb (22) 24.0 ppb (22) 22.5 ppb (21) N/A 4.0 ppb (3) 0.38 ppb (4) 21.0 μg/m3 (19) 14.0 μg/m3 (54) 54.0
 
Jan. 21, 2020, 9 a.m. 41.2 ppb (38) 13.8 ppb (13) 32.0 ppb (30) 27.0 ppb (25) 21.3 ppb (20) N/A 6.0 ppb (5) 0.34 ppb (4) 24.0 μg/m3 (22) 11.0 μg/m3 (46) 46.0
 
Jan. 21, 2020, 8 a.m. 16.3 ppb (15) 0.9 ppb (1) 12.7 ppb (12) 15.0 ppb (14) 12.7 ppb (12) N/A 17.0 ppb (13) 0.31 ppb (3) 16.0 μg/m3 (15) 13.0 μg/m3 (52) 52.0
 
Jan. 21, 2020, 7 a.m. 12.4 ppb (11) 0.8 ppb (1) 10.3 ppb (10) 12.0 ppb (11) 10.3 ppb (10) N/A 22.0 ppb (17) 0.27 ppb (3) 18.0 μg/m3 (16) 6.0 μg/m3 (25) 25.0
 
Jan. 21, 2020, 6 a.m. 13.8 ppb (13) 0.8 ppb (1) 12.8 ppb (12) 13.0 ppb (12) 12.8 ppb (12) N/A 22.0 ppb (17) 0.29 ppb (3) 18.0 μg/m3 (16) 6.0 μg/m3 (25) 25.0
 
Jan. 21, 2020, 5 a.m. 22.5 ppb (21) 1.0 ppb (1) 19.8 ppb (18) 21.0 ppb (19) 19.7 ppb (18) N/A 15.0 ppb (12) 0.37 ppb (4) 21.0 μg/m3 (19) 8.0 μg/m3 (33) 33.0
 
Jan. 21, 2020, 4 a.m. 20.0 ppb (19) 0.9 ppb (1) 17.9 ppb (17) 19.0 ppb (18) 17.8 ppb (16) N/A 19.0 ppb (15) 0.3 ppb (3) 22.0 μg/m3 (20) 8.0 μg/m3 (33) 33.0
 
Jan. 21, 2020, 3 a.m. 16.2 ppb (15) 0.7 ppb (1) 14.4 ppb (13) 15.0 ppb (14) 14.4 ppb (13) N/A 23.0 ppb (18) 0.29 ppb (3) 16.0 μg/m3 (15) 9.0 μg/m3 (38) 38.0
 
Jan. 21, 2020, 2 a.m. 26.9 ppb (25) 1.9 ppb (2) 24.7 ppb (23) 25.0 ppb (23) 23.7 ppb (22) N/A 15.0 ppb (12) 0.41 ppb (5) 28.0 μg/m3 (25) 16.0 μg/m3 (59) 59.0
 
Jan. 21, 2020, 1 a.m. 28.3 ppb (26) 2.0 ppb (2) 26.0 ppb (24) 26.0 ppb (24) 24.9 ppb (23) N/A 16.0 ppb (12) 0.39 ppb (4) 29.0 μg/m3 (26) 9.0 μg/m3 (38) 38.0
 
Jan. 21, 2020, midnight 36.7 ppb (34) 3.9 ppb (4) 35.0 ppb (32) 33.0 ppb (31) 31.9 ppb (30) N/A 12.0 ppb (9) 0.48 ppb (5) 41.0 μg/m3 (37) 15.0 μg/m3 (56) 56.0
 
Jan. 20, 2020, 11 p.m. 47.8 ppb (44) 9.3 ppb (9) 46.1 ppb (43) 39.0 ppb (36) 37.4 ppb (35) N/A 11.0 ppb (8) 0.55 ppb (6) 46.0 μg/m3 (42) 23.0 μg/m3 (73) 73.0
 
Jan. 20, 2020, 10 p.m. 43.9 ppb (41) 8.1 ppb (8) 42.0 ppb (39) 36.0 ppb (33) 35.0 ppb (32) N/A 14.0 ppb (11) 0.54 ppb (6) 44.0 μg/m3 (40) 26.0 μg/m3 (80) 80.0
 
Jan. 20, 2020, 9 p.m. 42.7 ppb (40) 10.6 ppb (10) 41.1 ppb (38) 32.0 ppb (30) 31.1 ppb (29) N/A 16.0 ppb (12) 0.57 ppb (6) 37.0 μg/m3 (34) 17.0 μg/m3 (61) 61.0
 
Jan. 20, 2020, 8 p.m. 51.5 ppb (48) 17.9 ppb (17) 49.1 ppb (45) 34.0 ppb (31) 32.0 ppb (30) N/A 12.0 ppb (9) 0.61 ppb (7) 39.0 μg/m3 (35) 22.0 μg/m3 (71) 71.0
 
Jan. 20, 2020, 7 p.m. 58.9 ppb (55) 24.1 ppb (22) 55.4 ppb (51) 35.0 ppb (32) 33.2 ppb (31) N/A 7.0 ppb (5) 0.7 ppb (8) 38.0 μg/m3 (35) 23.0 μg/m3 (73) 73.0
 
Jan. 20, 2020, 6 p.m. 55.5 ppb (52) 22.1 ppb (20) 51.8 ppb (48) 33.0 ppb (31) 32.4 ppb (30) N/A 7.0 ppb (5) 0.59 ppb (7) 40.0 μg/m3 (36) 22.0 μg/m3 (71) 71.0
 
Jan. 20, 2020, 5 p.m. 61.6 ppb (58) 28.5 ppb (26) 57.3 ppb (54) 33.0 ppb (31) 31.2 ppb (29) N/A 4.0 ppb (3) 0.67 ppb (7) 46.0 μg/m3 (42) 24.0 μg/m3 (76) 76.0
 
Jan. 20, 2020, 4 p.m. 69.2 ppb (66) 35.1 ppb (32) 63.5 ppb (60) 34.0 ppb (31) 32.9 ppb (30) N/A 2.0 ppb (2) 0.75 ppb (8) 40.0 μg/m3 (36) 22.0 μg/m3 (71) 71.0
 
Jan. 20, 2020, 3 p.m. 80.5 ppb (78) 45.2 ppb (42) 72.8 ppb (70) 35.0 ppb (32) 33.4 ppb (31) N/A 1.0 ppb (1) 0.95 ppb (11) 36.0 μg/m3 (33) 26.0 μg/m3 (80) 80.0
 
Jan. 20, 2020, 2 p.m. 85.0 ppb (83) 50.4 ppb (47) 76.1 ppb (74) 35.0 ppb (32) 31.5 ppb (29) N/A 0.0 ppb (0) 1.06 ppb (12) 34.0 μg/m3 (31) 14.0 μg/m3 (54) 83.0
 
Jan. 20, 2020, 1 p.m. 73.8 ppb (71) 40.9 ppb (38) 63.8 ppb (60) 33.0 ppb (31) 27.4 ppb (25) N/A 0.0 ppb (0) 0.91 ppb (10) 32.0 μg/m3 (29) 17.0 μg/m3 (61) 71.0
 
Jan. 20, 2020, noon 95.8 ppb (94) 62.3 ppb (59) 81.9 ppb (80) 34.0 ppb (31) 31.2 ppb (29) N/A 0.0 ppb (0) 1.08 ppb (12) 32.0 μg/m3 (29) 18.0 μg/m3 (63) 94.0
 
Jan. 20, 2020, 11 a.m. 67.1 ppb (64) 34.0 ppb (31) 65.1 ppb (62) 33.0 ppb (31) 29.0 ppb (27) N/A 0.0 ppb (0) 0.92 ppb (10) 31.0 μg/m3 (28) 16.0 μg/m3 (59) 64.0
 
Jan. 20, 2020, 10 a.m. 74.4 ppb (72) 41.4 ppb (38) 69.0 ppb (66) 33.0 ppb (31) 31.6 ppb (29) N/A 0.0 ppb (0) 1.09 ppb (12) 36.0 μg/m3 (33) 17.0 μg/m3 (61) 72.0
 
Jan. 20, 2020, 9 a.m. 83.9 ppb (82) 47.8 ppb (44) 73.2 ppb (70) 36.0 ppb (33) 30.5 ppb (28) N/A 0.0 ppb (0) 1.23 ppb (14) 36.0 μg/m3 (33) 22.0 μg/m3 (71) 82.0
 
Jan. 20, 2020, 8 a.m. 84.1 ppb (82) 46.3 ppb (43) 77.8 ppb (75) 38.0 ppb (35) 36.8 ppb (34) N/A 1.0 ppb (1) 1.23 ppb (14) 36.0 μg/m3 (33) 23.0 μg/m3 (73) 82.0
 
Jan. 20, 2020, 7 a.m. 71.2 ppb (68) 29.5 ppb (27) 68.2 ppb (65) 42.0 ppb (39) 40.6 ppb (38) N/A 0.0 ppb (0) 0.8 ppb (9) 37.0 μg/m3 (34) 19.0 μg/m3 (65) 68.0
 
Jan. 20, 2020, 6 a.m. 74.9 ppb (72) 31.7 ppb (29) 69.8 ppb (67) 43.0 ppb (40) 41.6 ppb (39) N/A 0.0 ppb (0) 0.9 ppb (10) 36.0 μg/m3 (33) 17.0 μg/m3 (61) 72.0
 
Jan. 20, 2020, 5 a.m. 52.4 ppb (49) 11.1 ppb (10) 53.5 ppb (50) 41.0 ppb (38) 38.9 ppb (36) N/A 1.0 ppb (1) 0.77 ppb (9) 34.0 μg/m3 (31) 18.0 μg/m3 (63) 63.0