AQSQID: 130890002

Site Name: South Dekalb

Location: DeKalb Co, GA

Reporting: True, Located: True

Current AQI: 14.0

DeKalb Co GA, US: 33.6906, -84.2731

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
Sept. 15, 2019, 11 a.m. 14.1 ppb (13) 4.0 ppb (4) 15.0 ppb (14) 10.0 ppb (9) N/A 0.0 ppb (0) 0.0 ppb (0) 0.32 ppb (4) N/A N/A 14.0
 
Sept. 15, 2019, 10 a.m. 10.7 ppb (10) 0.7 ppb (1) 11.0 ppb (10) 10.0 ppb (9) N/A 0.0 ppb (0) 1.0 ppb (1) 0.3 ppb (3) 14.0 μg/m3 (13) 8.2 μg/m3 (34) 34.0
 
Sept. 15, 2019, 9 a.m. 7.5 ppb (7) 0.2 ppb (0) 7.0 ppb (6) 7.0 ppb (6) N/A 0.0 ppb (0) 6.0 ppb (5) 0.24 ppb (3) 12.0 μg/m3 (11) 7.9 μg/m3 (33) 33.0
 
Sept. 15, 2019, 8 a.m. 5.8 ppb (5) 0.1 ppb (0) 5.0 ppb (5) 6.0 ppb (6) N/A 0.0 ppb (0) 10.0 ppb (8) 0.24 ppb (3) 12.0 μg/m3 (11) 7.9 μg/m3 (33) 33.0
 
Sept. 15, 2019, 7 a.m. 5.9 ppb (5) 0.1 ppb (0) 5.0 ppb (5) 6.0 ppb (6) N/A 0.0 ppb (0) 12.0 ppb (9) 0.24 ppb (3) 12.0 μg/m3 (11) 7.9 μg/m3 (33) 33.0
 
Sept. 15, 2019, 6 a.m. 5.9 ppb (5) 0.0 ppb (0) 5.0 ppb (5) 6.0 ppb (6) N/A 0.0 ppb (0) 19.0 ppb (15) 0.23 ppb (3) 11.0 μg/m3 (10) 7.6 μg/m3 (32) 32.0
 
Sept. 15, 2019, 5 a.m. 5.6 ppb (5) 0.0 ppb (0) 5.0 ppb (5) 6.0 ppb (6) N/A 0.0 ppb (0) 25.0 ppb (19) 0.23 ppb (3) 11.0 μg/m3 (10) 7.1 μg/m3 (30) 30.0
 
Sept. 15, 2019, 4 a.m. 5.4 ppb (5) -0.1 ppb (0) 5.0 ppb (5) 6.0 ppb (6) N/A 0.0 ppb (0) 30.0 ppb (23) 0.23 ppb (3) N/A N/A 23.0
 
Sept. 15, 2019, 3 a.m. 5.7 ppb (5) -0.1 ppb (0) 5.0 ppb (5) 6.0 ppb (6) N/A 0.0 ppb (0) 27.0 ppb (21) 0.25 ppb (3) 13.0 μg/m3 (12) 9.4 μg/m3 (39) 39.0
 
Sept. 15, 2019, 2 a.m. 6.9 ppb (6) -0.1 ppb (0) 6.0 ppb (6) 7.0 ppb (6) N/A 0.0 ppb (0) 22.0 ppb (17) 0.31 ppb (3) 18.0 μg/m3 (16) 12.6 μg/m3 (51) 51.0
 
Sept. 15, 2019, 1 a.m. 8.7 ppb (8) -0.1 ppb (0) 8.0 ppb (7) 9.0 ppb (8) N/A 0.0 ppb (0) 21.0 ppb (16) 0.33 ppb (4) 19.0 μg/m3 (17) 13.4 μg/m3 (53) 53.0
 
Sept. 15, 2019, midnight 4.9 ppb (5) -0.1 ppb (0) 4.0 ppb (4) 5.0 ppb (5) N/A 0.0 ppb (0) 30.0 ppb (23) 0.24 ppb (3) 18.0 μg/m3 (16) 12.6 μg/m3 (51) 51.0
 
Sept. 14, 2019, 11 p.m. 2.8 ppb (3) -0.1 ppb (0) 2.0 ppb (2) 3.0 ppb (3) N/A 0.0 ppb (0) 38.0 ppb (29) 0.2 ppb (2) 17.0 μg/m3 (15) 12.3 μg/m3 (51) 51.0
 
Sept. 14, 2019, 10 p.m. 2.2 ppb (2) -0.1 ppb (0) 2.0 ppb (2) 2.0 ppb (2) N/A 0.0 ppb (0) 41.0 ppb (32) 0.2 ppb (2) 17.0 μg/m3 (15) 12.1 μg/m3 (50) 50.0
 
Sept. 14, 2019, 9 p.m. 1.9 ppb (2) 0.0 ppb (0) 1.0 ppb (1) 2.0 ppb (2) N/A 0.0 ppb (0) 43.0 ppb (33) 0.2 ppb (2) 17.0 μg/m3 (15) 11.7 μg/m3 (49) 49.0
 
Sept. 14, 2019, 8 p.m. 1.9 ppb (2) 0.0 ppb (0) 1.0 ppb (1) 2.0 ppb (2) N/A 0.0 ppb (0) 43.0 ppb (33) 0.2 ppb (2) 17.0 μg/m3 (15) 11.4 μg/m3 (48) 48.0
 
Sept. 14, 2019, 7 p.m. 2.5 ppb (2) 0.0 ppb (0) 2.0 ppb (2) 2.0 ppb (2) N/A 0.0 ppb (0) 42.0 ppb (32) 0.21 ppb (2) 16.0 μg/m3 (15) 11.3 μg/m3 (47) 47.0
 
Sept. 14, 2019, 6 p.m. 2.3 ppb (2) 0.0 ppb (0) 2.0 ppb (2) 2.0 ppb (2) N/A 0.0 ppb (0) 41.0 ppb (32) 0.2 ppb (2) 17.0 μg/m3 (15) 11.1 μg/m3 (46) 46.0
 
Sept. 14, 2019, 5 p.m. 2.4 ppb (2) 0.1 ppb (0) 2.0 ppb (2) 2.0 ppb (2) N/A 0.0 ppb (0) 42.0 ppb (32) 0.2 ppb (2) 17.0 μg/m3 (15) 10.8 μg/m3 (45) 45.0
 
Sept. 14, 2019, 4 p.m. 2.8 ppb (3) 0.1 ppb (0) 2.0 ppb (2) 3.0 ppb (3) N/A 0.0 ppb (0) 42.0 ppb (32) 0.2 ppb (2) 17.0 μg/m3 (15) 10.8 μg/m3 (45) 45.0
 
Sept. 14, 2019, 3 p.m. 3.3 ppb (3) 0.1 ppb (0) 3.0 ppb (3) 3.0 ppb (3) N/A 0.0 ppb (0) 40.0 ppb (31) 0.2 ppb (2) 16.0 μg/m3 (15) 10.1 μg/m3 (42) 42.0
 
Sept. 14, 2019, 2 p.m. 3.5 ppb (3) 0.2 ppb (0) 3.0 ppb (3) 3.0 ppb (3) N/A 0.0 ppb (0) 35.0 ppb (27) 0.2 ppb (2) 15.0 μg/m3 (14) 10.2 μg/m3 (42) 42.0
 
Sept. 14, 2019, 1 p.m. 4.5 ppb (4) 0.3 ppb (0) 4.0 ppb (4) 4.0 ppb (4) N/A 0.0 ppb (0) 29.0 ppb (22) 0.21 ppb (2) 17.0 μg/m3 (15) 10.6 μg/m3 (44) 44.0
 
Sept. 14, 2019, noon 4.0 ppb (4) 0.0 ppb (0) 4.0 ppb (4) 4.0 ppb (4) N/A 0.0 ppb (0) 27.0 ppb (21) 0.2 ppb (2) 16.0 μg/m3 (15) 10.0 μg/m3 (42) 42.0
 
Sept. 14, 2019, 11 a.m. 4.2 ppb (4) 0.0 ppb (0) 4.0 ppb (4) 4.0 ppb (4) N/A 0.0 ppb (0) 24.0 ppb (18) 0.23 ppb (3) 17.0 μg/m3 (15) 10.1 μg/m3 (42) 42.0
 
Sept. 14, 2019, 10 a.m. 4.3 ppb (4) -0.1 ppb (0) 4.0 ppb (4) 4.0 ppb (4) N/A 0.0 ppb (0) 25.0 ppb (19) 0.19 ppb (2) 15.0 μg/m3 (14) 10.0 μg/m3 (42) 42.0
 
Sept. 14, 2019, 9 a.m. 5.0 ppb (5) -0.1 ppb (0) 4.0 ppb (4) 5.0 ppb (5) N/A 0.0 ppb (0) 21.0 ppb (16) 0.2 ppb (2) 14.0 μg/m3 (13) 9.8 μg/m3 (41) 41.0
 
Sept. 14, 2019, 8 a.m. 4.2 ppb (4) -0.1 ppb (0) 4.0 ppb (4) 4.0 ppb (4) N/A 0.0 ppb (0) 25.0 ppb (19) 0.19 ppb (2) 13.0 μg/m3 (12) 9.6 μg/m3 (40) 40.0
 
Sept. 14, 2019, 7 a.m. 4.0 ppb (4) -0.1 ppb (0) 3.0 ppb (3) 4.0 ppb (4) N/A 0.0 ppb (0) 28.0 ppb (22) 0.18 ppb (2) 13.0 μg/m3 (12) 8.9 μg/m3 (37) 37.0
 
Sept. 14, 2019, 6 a.m. 4.8 ppb (4) -0.1 ppb (0) 4.0 ppb (4) 5.0 ppb (5) N/A 0.0 ppb (0) 29.0 ppb (22) 0.21 ppb (2) 12.0 μg/m3 (11) 7.8 μg/m3 (32) 32.0
 
Sept. 14, 2019, 5 a.m. 4.5 ppb (4) -0.1 ppb (0) 4.0 ppb (4) 5.0 ppb (5) N/A 0.0 ppb (0) 33.0 ppb (25) 0.21 ppb (2) 10.0 μg/m3 (9) 6.5 μg/m3 (27) 27.0
 
Sept. 14, 2019, 4 a.m. 5.8 ppb (5) -0.1 ppb (0) 5.0 ppb (5) 6.0 ppb (6) N/A 0.0 ppb (0) 34.0 ppb (26) 0.23 ppb (3) N/A N/A 26.0
 
Sept. 14, 2019, 3 a.m. 3.8 ppb (4) -0.1 ppb (0) 3.0 ppb (3) 4.0 ppb (4) N/A 0.0 ppb (0) 42.0 ppb (32) 0.2 ppb (2) 12.0 μg/m3 (11) 5.6 μg/m3 (23) 32.0
 
Sept. 14, 2019, 2 a.m. 6.1 ppb (6) 0.0 ppb (0) 7.0 ppb (6) 6.0 ppb (6) N/A 0.0 ppb (0) 30.0 ppb (23) 0.29 ppb (3) 23.0 μg/m3 (21) 12.7 μg/m3 (51) 51.0
 
Sept. 14, 2019, 1 a.m. 10.2 ppb (9) 0.1 ppb (0) 9.0 ppb (8) 10.0 ppb (9) N/A 0.0 ppb (0) 24.0 ppb (18) 0.36 ppb (4) 23.0 μg/m3 (21) 15.4 μg/m3 (57) 57.0
 
Sept. 14, 2019, midnight 5.3 ppb (5) -0.1 ppb (0) 4.0 ppb (4) 5.0 ppb (5) N/A 0.0 ppb (0) 34.0 ppb (26) 0.27 ppb (3) 24.0 μg/m3 (22) 14.7 μg/m3 (56) 56.0
 
Sept. 13, 2019, 11 p.m. 4.5 ppb (4) 0.0 ppb (0) 4.0 ppb (4) 5.0 ppb (5) N/A 0.0 ppb (0) 40.0 ppb (31) 0.25 ppb (3) 21.0 μg/m3 (19) 14.2 μg/m3 (55) 55.0
 
Sept. 13, 2019, 10 p.m. 4.0 ppb (4) 0.0 ppb (0) 3.0 ppb (3) 4.0 ppb (4) N/A 0.0 ppb (0) 46.0 ppb (35) 0.24 ppb (3) 21.0 μg/m3 (19) 13.8 μg/m3 (54) 54.0
 
Sept. 13, 2019, 9 p.m. 6.3 ppb (6) 0.2 ppb (0) 5.0 ppb (5) 6.0 ppb (6) N/A 0.0 ppb (0) 49.0 ppb (38) 0.26 ppb (3) 22.0 μg/m3 (20) 13.5 μg/m3 (53) 53.0
 
Sept. 13, 2019, 8 p.m. 4.5 ppb (4) 0.0 ppb (0) 3.0 ppb (3) 4.0 ppb (4) N/A 0.0 ppb (0) 60.0 ppb (46) 0.23 ppb (3) 24.0 μg/m3 (22) 14.5 μg/m3 (55) 55.0
 
Sept. 13, 2019, 7 p.m. 4.1 ppb (4) 0.0 ppb (0) 3.0 ppb (3) 4.0 ppb (4) N/A 0.0 ppb (0) 67.0 ppb (52) 0.24 ppb (3) 24.0 μg/m3 (22) 15.3 μg/m3 (57) 57.0
 
Sept. 13, 2019, 6 p.m. 4.1 ppb (4) 0.0 ppb (0) 4.0 ppb (4) 4.0 ppb (4) N/A 0.0 ppb (0) 75.0 ppb (58) 0.25 ppb (3) 27.0 μg/m3 (25) 16.0 μg/m3 (59) 59.0
 
Sept. 13, 2019, 5 p.m. 5.0 ppb (5) 0.1 ppb (0) 5.0 ppb (5) 5.0 ppb (5) N/A 0.0 ppb (0) 78.0 ppb (61) 0.26 ppb (3) 27.0 μg/m3 (25) 15.9 μg/m3 (58) 61.0
 
Sept. 13, 2019, 4 p.m. 10.9 ppb (10) 0.7 ppb (1) 11.0 ppb (10) 10.0 ppb (9) N/A 0.0 ppb (0) 71.0 ppb (55) 0.3 ppb (3) 36.0 μg/m3 (33) 16.9 μg/m3 (60) 60.0
 
Sept. 13, 2019, 3 p.m. 35.4 ppb (33) 6.7 ppb (6) 35.0 ppb (32) 29.0 ppb (27) N/A 1.0 ppb (1) 40.0 ppb (31) 0.43 ppb (5) 44.0 μg/m3 (40) 17.9 μg/m3 (63) 63.0
 
Sept. 13, 2019, 2 p.m. 40.8 ppb (38) 10.5 ppb (10) 41.0 ppb (38) 30.0 ppb (28) N/A 1.0 ppb (1) 23.0 ppb (18) 0.48 ppb (5) 39.0 μg/m3 (35) 18.3 μg/m3 (63) 63.0
 
Sept. 13, 2019, 1 p.m. 28.1 ppb (26) 7.8 ppb (7) 28.0 ppb (26) 20.0 ppb (19) N/A 0.0 ppb (0) 15.0 ppb (12) 0.48 ppb (5) 31.0 μg/m3 (28) 18.4 μg/m3 (64) 64.0
 
Sept. 13, 2019, noon 59.7 ppb (56) 48.1 ppb (45) 55.0 ppb (51) 12.0 ppb (11) N/A 0.0 ppb (0) 0.0 ppb (0) 0.72 ppb (8) 27.0 μg/m3 (25) 15.2 μg/m3 (57) 57.0
 
Sept. 13, 2019, 11 a.m. 97.6 ppb (96) 85.7 ppb (84) 98.0 ppb (97) 12.0 ppb (11) N/A 0.0 ppb (0) 0.0 ppb (0) 0.87 ppb (10) 26.0 μg/m3 (24) 16.0 μg/m3 (59) 97.0
 
Sept. 13, 2019, 10 a.m. 91.9 ppb (90) 78.2 ppb (76) 94.0 ppb (93) 14.0 ppb (13) N/A 0.0 ppb (0) 0.0 ppb (0) 0.79 ppb (9) 27.0 μg/m3 (25) 16.3 μg/m3 (59) 93.0
 
Sept. 13, 2019, 9 a.m. 74.0 ppb (71) 59.5 ppb (56) 74.0 ppb (71) 14.0 ppb (13) N/A 0.0 ppb (0) 0.0 ppb (0) 0.73 ppb (8) 26.0 μg/m3 (24) 15.7 μg/m3 (58) 71.0
 
Sept. 13, 2019, 8 a.m. 74.8 ppb (72) 57.4 ppb (54) 74.0 ppb (71) 17.0 ppb (16) N/A 0.0 ppb (0) 0.0 ppb (0) 0.72 ppb (8) 27.0 μg/m3 (25) 16.2 μg/m3 (59) 72.0
 
Sept. 13, 2019, 7 a.m. 69.3 ppb (66) 50.0 ppb (46) 71.0 ppb (68) 19.0 ppb (18) N/A 0.0 ppb (0) 0.0 ppb (0) 0.71 ppb (8) 27.0 μg/m3 (25) 15.7 μg/m3 (58) 68.0
 
Sept. 13, 2019, 6 a.m. 61.9 ppb (58) 38.2 ppb (35) 62.0 ppb (59) 24.0 ppb (22) N/A 0.0 ppb (0) 0.0 ppb (0) 0.72 ppb (8) 25.0 μg/m3 (23) 15.6 μg/m3 (58) 59.0
 
Sept. 13, 2019, 5 a.m. 69.1 ppb (66) 43.3 ppb (40) 71.0 ppb (68) 26.0 ppb (24) N/A 0.0 ppb (0) 0.0 ppb (0) 0.73 ppb (8) 26.0 μg/m3 (24) 16.1 μg/m3 (59) 68.0
 
Sept. 13, 2019, 4 a.m. 62.4 ppb (59) 36.2 ppb (34) 65.0 ppb (62) 26.0 ppb (24) N/A 0.0 ppb (0) 0.0 ppb (0) 0.64 ppb (7) N/A N/A 62.0
 
Sept. 13, 2019, 3 a.m. 53.4 ppb (49) 22.3 ppb (21) 58.0 ppb (54) 31.0 ppb (29) N/A 0.0 ppb (0) 0.0 ppb (0) 0.59 ppb (7) 22.0 μg/m3 (20) 15.3 μg/m3 (57) 57.0
 
Sept. 13, 2019, 2 a.m. 53.0 ppb (49) 18.0 ppb (17) 56.0 ppb (52) 35.0 ppb (32) N/A 0.0 ppb (0) 0.0 ppb (0) 0.56 ppb (6) 22.0 μg/m3 (20) 14.3 μg/m3 (55) 55.0
 
Sept. 13, 2019, 1 a.m. 34.7 ppb (32) 6.1 ppb (6) 47.0 ppb (44) 29.0 ppb (27) N/A 0.0 ppb (0) 8.0 ppb (6) 0.42 ppb (5) 23.0 μg/m3 (21) 14.3 μg/m3 (55) 55.0
 
Sept. 13, 2019, midnight 5.7 ppb (5) -0.1 ppb (0) 5.0 ppb (5) 6.0 ppb (6) N/A 0.0 ppb (0) 37.0 ppb (28) 0.26 ppb (3) 26.0 μg/m3 (24) 18.3 μg/m3 (63) 63.0
 
Sept. 12, 2019, 11 p.m. 4.9 ppb (5) -0.1 ppb (0) 3.0 ppb (3) 5.0 ppb (5) N/A 0.0 ppb (0) 46.0 ppb (35) 0.24 ppb (3) 24.0 μg/m3 (22) 15.6 μg/m3 (58) 58.0
 
Sept. 12, 2019, 10 p.m. 4.0 ppb (4) 0.0 ppb (0) 3.0 ppb (3) 4.0 ppb (4) N/A 0.0 ppb (0) 54.0 ppb (42) 0.23 ppb (3) 21.0 μg/m3 (19) 12.6 μg/m3 (51) 51.0
 
Sept. 12, 2019, 9 p.m. 3.1 ppb (3) -0.1 ppb (0) 2.0 ppb (2) 3.0 ppb (3) N/A 0.0 ppb (0) 61.0 ppb (47) 0.19 ppb (2) 20.0 μg/m3 (18) 12.7 μg/m3 (51) 51.0
 
Sept. 12, 2019, 8 p.m. 3.9 ppb (4) 0.0 ppb (0) 3.0 ppb (3) 4.0 ppb (4) N/A 0.0 ppb (0) 60.0 ppb (46) 0.21 ppb (2) 23.0 μg/m3 (21) 13.3 μg/m3 (53) 53.0
 
Sept. 12, 2019, 7 p.m. 3.6 ppb (3) 0.0 ppb (0) 3.0 ppb (3) 4.0 ppb (4) N/A 0.0 ppb (0) 63.0 ppb (48) 0.21 ppb (2) 24.0 μg/m3 (22) 14.0 μg/m3 (54) 54.0
 
Sept. 12, 2019, 6 p.m. 3.8 ppb (4) 0.0 ppb (0) 3.0 ppb (3) 4.0 ppb (4) N/A 0.0 ppb (0) 65.0 ppb (50) 0.22 ppb (2) 21.0 μg/m3 (19) 13.9 μg/m3 (54) 54.0
 
Sept. 12, 2019, 5 p.m. 3.6 ppb (3) 0.0 ppb (0) 3.0 ppb (3) 4.0 ppb (4) N/A 0.0 ppb (0) 65.0 ppb (50) 0.23 ppb (3) 24.0 μg/m3 (22) 14.6 μg/m3 (56) 56.0
 
Sept. 12, 2019, 4 p.m. 6.1 ppb (6) 0.2 ppb (0) 6.0 ppb (6) 6.0 ppb (6) N/A 0.0 ppb (0) 71.0 ppb (55) 0.28 ppb (3) 27.0 μg/m3 (25) 16.0 μg/m3 (59) 59.0
 
Sept. 12, 2019, 3 p.m. 17.3 ppb (16) 1.5 ppb (1) 17.0 ppb (16) 16.0 ppb (15) N/A 0.0 ppb (0) 67.0 ppb (52) 0.46 ppb (5) 32.0 μg/m3 (29) 18.3 μg/m3 (63) 63.0
 
Sept. 12, 2019, 2 p.m. 60.1 ppb (56) 24.3 ppb (23) 60.0 ppb (56) 36.0 ppb (33) N/A 0.0 ppb (0) 17.0 ppb (13) 0.83 ppb (9) 35.0 μg/m3 (32) 18.6 μg/m3 (64) 64.0
 
Sept. 12, 2019, 1 p.m. 80.4 ppb (78) 53.8 ppb (50) 80.0 ppb (78) 27.0 ppb (25) N/A 0.0 ppb (0) 3.0 ppb (2) 0.91 ppb (10) 31.0 μg/m3 (28) 17.2 μg/m3 (61) 78.0
 
Sept. 12, 2019, noon 107.5 ppb (101) 94.4 ppb (93) 107.0 ppb (101) 13.0 ppb (12) N/A 0.0 ppb (0) 0.0 ppb (0) 0.93 ppb (10) 26.0 μg/m3 (24) 15.9 μg/m3 (58) 101.0
 
Sept. 12, 2019, 11 a.m. 112.8 ppb (102) 99.7 ppb (99) 118.0 ppb (103) 13.0 ppb (12) N/A 0.0 ppb (0) 0.0 ppb (0) 0.88 ppb (10) 25.0 μg/m3 (23) 16.7 μg/m3 (60) 103.0
 
Sept. 12, 2019, 10 a.m. 88.7 ppb (87) 75.1 ppb (72) 92.0 ppb (90) 14.0 ppb (13) N/A 0.0 ppb (0) 0.0 ppb (0) 0.73 ppb (8) 23.0 μg/m3 (21) 16.1 μg/m3 (59) 90.0
 
Sept. 12, 2019, 9 a.m. 65.2 ppb (62) 50.9 ppb (47) 67.0 ppb (64) 14.0 ppb (13) N/A 0.0 ppb (0) 0.0 ppb (0) 0.64 ppb (7) 24.0 μg/m3 (22) 15.5 μg/m3 (57) 64.0
 
Sept. 12, 2019, 8 a.m. 57.0 ppb (53) 40.3 ppb (37) 57.0 ppb (53) 17.0 ppb (16) N/A 0.0 ppb (0) 0.0 ppb (0) 0.61 ppb (7) 24.0 μg/m3 (22) 15.8 μg/m3 (58) 58.0
 
Sept. 12, 2019, 7 a.m. 58.9 ppb (55) 36.5 ppb (34) 58.0 ppb (54) 22.0 ppb (20) N/A 0.0 ppb (0) 0.0 ppb (0) 0.63 ppb (7) 25.0 μg/m3 (23) 15.7 μg/m3 (58) 58.0
 
Sept. 12, 2019, 6 a.m. 50.6 ppb (47) 30.6 ppb (28) 52.0 ppb (48) 20.0 ppb (19) N/A 0.0 ppb (0) 0.0 ppb (0) 0.6 ppb (7) 24.0 μg/m3 (22) 15.6 μg/m3 (58) 58.0
 
Sept. 12, 2019, 5 a.m. 65.8 ppb (63) 40.7 ppb (38) 68.0 ppb (65) 25.0 ppb (23) N/A 0.0 ppb (0) 0.0 ppb (0) 0.66 ppb (7) 24.0 μg/m3 (22) 15.6 μg/m3 (58) 65.0
 
Sept. 12, 2019, 4 a.m. 50.6 ppb (47) 24.6 ppb (23) 57.0 ppb (53) 26.0 ppb (24) N/A 0.0 ppb (0) 0.0 ppb (0) 0.58 ppb (6) 23.0 μg/m3 (21) 15.0 μg/m3 (56) 56.0
 
Sept. 12, 2019, 3 a.m. 50.4 ppb (47) 19.7 ppb (18) 52.0 ppb (48) 31.0 ppb (29) N/A 0.0 ppb (0) 0.0 ppb (0) 0.57 ppb (6) 23.0 μg/m3 (21) 14.6 μg/m3 (56) 56.0
 
Sept. 12, 2019, 2 a.m. 47.3 ppb (44) 15.9 ppb (15) 49.0 ppb (45) 32.0 ppb (30) N/A 0.0 ppb (0) 0.0 ppb (0) 0.51 ppb (6) 21.0 μg/m3 (19) 14.1 μg/m3 (54) 54.0
 
Sept. 12, 2019, 1 a.m. 41.7 ppb (39) 9.5 ppb (9) 49.0 ppb (45) 32.0 ppb (30) N/A 0.0 ppb (0) 5.0 ppb (4) 0.44 ppb (5) 22.0 μg/m3 (20) 13.8 μg/m3 (54) 54.0
 
Sept. 12, 2019, midnight 5.5 ppb (5) -0.1 ppb (0) 7.0 ppb (6) 6.0 ppb (6) N/A 0.0 ppb (0) 38.0 ppb (29) 0.23 ppb (3) 21.0 μg/m3 (19) 13.5 μg/m3 (53) 53.0
 
Sept. 11, 2019, 11 p.m. 4.5 ppb (4) -0.1 ppb (0) 3.0 ppb (3) 5.0 ppb (5) N/A 0.0 ppb (0) 48.0 ppb (37) 0.2 ppb (2) 19.0 μg/m3 (17) 12.7 μg/m3 (51) 51.0
 
Sept. 11, 2019, 10 p.m. 3.6 ppb (3) -0.1 ppb (0) 3.0 ppb (3) 4.0 ppb (4) N/A 0.0 ppb (0) 59.0 ppb (45) 0.2 ppb (2) 19.0 μg/m3 (17) 13.0 μg/m3 (52) 52.0
 
Sept. 11, 2019, 9 p.m. 4.2 ppb (4) 0.0 ppb (0) 3.0 ppb (3) 4.0 ppb (4) N/A 0.0 ppb (0) 62.0 ppb (48) 0.2 ppb (2) 20.0 μg/m3 (18) 12.9 μg/m3 (52) 52.0
 
Sept. 11, 2019, 8 p.m. 3.5 ppb (3) 0.0 ppb (0) 3.0 ppb (3) 3.0 ppb (3) N/A 0.0 ppb (0) 60.0 ppb (46) 0.19 ppb (2) 21.0 μg/m3 (19) 13.1 μg/m3 (52) 52.0
 
Sept. 11, 2019, 7 p.m. 2.8 ppb (3) 0.0 ppb (0) 2.0 ppb (2) 3.0 ppb (3) N/A 0.0 ppb (0) 56.0 ppb (43) 0.19 ppb (2) 23.0 μg/m3 (21) 13.1 μg/m3 (52) 52.0
 
Sept. 11, 2019, 6 p.m. 2.7 ppb (3) 0.1 ppb (0) 2.0 ppb (2) 3.0 ppb (3) N/A 0.0 ppb (0) 56.0 ppb (43) 0.21 ppb (2) 24.0 μg/m3 (22) 13.4 μg/m3 (53) 53.0
 
Sept. 11, 2019, 5 p.m. 2.8 ppb (3) 0.0 ppb (0) 2.0 ppb (2) 3.0 ppb (3) N/A 0.0 ppb (0) 56.0 ppb (43) 0.2 ppb (2) 25.0 μg/m3 (23) 13.7 μg/m3 (54) 54.0
 
Sept. 11, 2019, 4 p.m. 3.5 ppb (3) 0.2 ppb (0) 3.0 ppb (3) 3.0 ppb (3) N/A 0.0 ppb (0) 53.0 ppb (41) 0.2 ppb (2) 21.0 μg/m3 (19) 13.4 μg/m3 (53) 53.0
 
Sept. 11, 2019, 3 p.m. 5.7 ppb (5) 0.6 ppb (1) 5.0 ppb (5) 5.0 ppb (5) N/A 0.0 ppb (0) 45.0 ppb (35) 0.22 ppb (2) 24.0 μg/m3 (22) 13.2 μg/m3 (53) 53.0
 
Sept. 11, 2019, 2 p.m. 8.3 ppb (8) 1.2 ppb (1) 8.0 ppb (7) 7.0 ppb (6) N/A 0.0 ppb (0) 32.0 ppb (25) 0.26 ppb (3) 32.0 μg/m3 (29) 13.8 μg/m3 (54) 54.0
 
Sept. 11, 2019, 1 p.m. 12.7 ppb (12) 2.7 ppb (3) 12.0 ppb (11) 10.0 ppb (9) N/A 0.0 ppb (0) 21.0 ppb (16) 0.32 ppb (4) 22.0 μg/m3 (20) 13.0 μg/m3 (52) 52.0
 
Sept. 11, 2019, noon 32.5 ppb (30) 22.5 ppb (21) 31.0 ppb (29) 10.0 ppb (9) N/A 0.0 ppb (0) 2.0 ppb (2) 0.45 ppb (5) 20.0 μg/m3 (18) 12.0 μg/m3 (50) 50.0
 
Sept. 11, 2019, 11 a.m. 47.4 ppb (44) 36.0 ppb (33) 49.0 ppb (45) 11.0 ppb (10) N/A 0.0 ppb (0) 0.0 ppb (0) 0.43 ppb (5) 20.0 μg/m3 (18) 12.8 μg/m3 (52) 52.0
 
Sept. 11, 2019, 10 a.m. 43.2 ppb (40) 31.6 ppb (29) 43.0 ppb (40) 12.0 ppb (11) N/A 0.0 ppb (0) 0.0 ppb (0) 0.4 ppb (4) 20.0 μg/m3 (18) 13.0 μg/m3 (52) 52.0
 
Sept. 11, 2019, 9 a.m. 38.4 ppb (36) 24.4 ppb (23) 42.0 ppb (39) 14.0 ppb (13) N/A 0.0 ppb (0) 0.0 ppb (0) N/A 20.0 μg/m3 (18) 13.2 μg/m3 (53) 53.0
 
Sept. 11, 2019, 8 a.m. 26.0 ppb (24) 9.4 ppb (9) 26.0 ppb (24) 17.0 ppb (16) N/A 0.0 ppb (0) 0.0 ppb (0) N/A 20.0 μg/m3 (18) 13.0 μg/m3 (52) 52.0
 
Sept. 11, 2019, 7 a.m. 26.3 ppb (24) 8.9 ppb (8) 27.0 ppb (25) 18.0 ppb (17) N/A 0.0 ppb (0) 0.0 ppb (0) 0.33 ppb (4) 20.0 μg/m3 (18) 12.9 μg/m3 (52) 52.0
 
Sept. 11, 2019, 6 a.m. 16.0 ppb (15) 1.6 ppb (1) 18.0 ppb (17) 14.0 ppb (13) N/A 0.0 ppb (0) 4.0 ppb (3) 0.29 ppb (3) 19.0 μg/m3 (17) 12.9 μg/m3 (52) 52.0
 
Sept. 11, 2019, 5 a.m. 12.5 ppb (12) 0.4 ppb (0) 12.0 ppb (11) 12.0 ppb (11) N/A 0.0 ppb (0) 6.0 ppb (5) 0.29 ppb (3) 19.0 μg/m3 (17) 12.5 μg/m3 (51) 51.0
 
Sept. 11, 2019, 4 a.m. 14.6 ppb (14) 0.1 ppb (0) 14.0 ppb (13) 14.0 ppb (13) N/A 0.0 ppb (0) 11.0 ppb (8) 0.29 ppb (3) N/A N/A 14.0
 
Sept. 11, 2019, 3 a.m. 15.1 ppb (14) 0.1 ppb (0) 15.0 ppb (14) 15.0 ppb (14) N/A 0.0 ppb (0) 13.0 ppb (10) 0.28 ppb (3) 17.0 μg/m3 (15) 11.9 μg/m3 (50) 50.0
 
Sept. 11, 2019, 2 a.m. 12.1 ppb (11) 0.0 ppb (0) 12.0 ppb (11) 12.0 ppb (11) N/A 0.0 ppb (0) 20.0 ppb (15) 0.25 ppb (3) 20.0 μg/m3 (18) 11.7 μg/m3 (49) 49.0
 
Sept. 11, 2019, 1 a.m. 8.0 ppb (7) 0.0 ppb (0) 7.0 ppb (6) 8.0 ppb (7) N/A 0.0 ppb (0) 27.0 ppb (21) 0.22 ppb (2) 18.0 μg/m3 (16) 10.7 μg/m3 (45) 45.0
 
Sept. 11, 2019, midnight 5.3 ppb (5) 0.0 ppb (0) 4.0 ppb (4) 5.0 ppb (5) N/A 0.0 ppb (0) 34.0 ppb (26) 0.2 ppb (2) 17.0 μg/m3 (15) 10.4 μg/m3 (43) 43.0
 
Sept. 10, 2019, 11 p.m. 4.8 ppb (4) 0.0 ppb (0) 3.0 ppb (3) 5.0 ppb (5) N/A 0.0 ppb (0) 38.0 ppb (29) 0.18 ppb (2) 19.0 μg/m3 (17) 11.3 μg/m3 (47) 47.0
 
Sept. 10, 2019, 10 p.m. 5.1 ppb (5) 0.1 ppb (0) 3.0 ppb (3) 5.0 ppb (5) N/A 0.0 ppb (0) 34.0 ppb (26) 0.2 ppb (2) 21.0 μg/m3 (19) 11.5 μg/m3 (48) 48.0
 
Sept. 10, 2019, 9 p.m. 5.4 ppb (5) 0.2 ppb (0) 4.0 ppb (4) 5.0 ppb (5) N/A 0.0 ppb (0) 40.0 ppb (31) 0.25 ppb (3) 32.0 μg/m3 (29) 14.9 μg/m3 (56) 56.0
 
Sept. 10, 2019, 8 p.m. 3.3 ppb (3) 0.0 ppb (0) 3.0 ppb (3) 3.0 ppb (3) N/A 0.0 ppb (0) 55.0 ppb (42) 0.22 ppb (2) 33.0 μg/m3 (30) 15.7 μg/m3 (58) 58.0
 
Sept. 10, 2019, 7 p.m. 2.6 ppb (2) -0.1 ppb (0) 2.0 ppb (2) 3.0 ppb (3) N/A 0.0 ppb (0) 56.0 ppb (43) 0.21 ppb (2) 25.0 μg/m3 (23) 15.6 μg/m3 (58) 58.0
 
Sept. 10, 2019, 6 p.m. 2.6 ppb (2) 0.0 ppb (0) 2.0 ppb (2) 3.0 ppb (3) N/A 0.0 ppb (0) 59.0 ppb (45) 0.22 ppb (2) 26.0 μg/m3 (24) 16.0 μg/m3 (59) 59.0
 
Sept. 10, 2019, 5 p.m. 3.2 ppb (3) 0.0 ppb (0) 3.0 ppb (3) 3.0 ppb (3) N/A 0.0 ppb (0) 61.0 ppb (47) 0.23 ppb (3) 27.0 μg/m3 (25) 16.2 μg/m3 (59) 59.0
 
Sept. 10, 2019, 4 p.m. 3.8 ppb (4) 0.0 ppb (0) 3.0 ppb (3) 4.0 ppb (4) N/A 0.0 ppb (0) 64.0 ppb (49) 0.23 ppb (3) 25.0 μg/m3 (23) 16.2 μg/m3 (59) 59.0
 
Sept. 10, 2019, 3 p.m. 6.0 ppb (6) 0.3 ppb (0) 6.0 ppb (6) 6.0 ppb (6) N/A 0.0 ppb (0) 57.0 ppb (44) 0.25 ppb (3) 25.0 μg/m3 (23) 15.8 μg/m3 (58) 58.0
 
Sept. 10, 2019, 2 p.m. 19.7 ppb (18) 4.1 ppb (4) 19.0 ppb (18) 16.0 ppb (15) N/A 0.0 ppb (0) 31.0 ppb (24) 0.37 ppb (4) 39.0 μg/m3 (35) 17.0 μg/m3 (61) 61.0
 
Sept. 10, 2019, 1 p.m. 47.7 ppb (44) 24.1 ppb (22) 47.0 ppb (44) 24.0 ppb (22) N/A 0.0 ppb (0) 9.0 ppb (7) 0.59 ppb (7) 40.0 μg/m3 (36) 17.9 μg/m3 (63) 63.0
 
Sept. 10, 2019, noon 34.0 ppb (31) 22.1 ppb (20) 39.0 ppb (36) 12.0 ppb (11) N/A 0.0 ppb (0) 1.0 ppb (1) 0.42 ppb (5) 22.0 μg/m3 (20) 13.9 μg/m3 (54) 54.0
 
Sept. 10, 2019, 11 a.m. 22.0 ppb (20) 9.8 ppb (9) 23.0 ppb (21) 12.0 ppb (11) N/A 0.0 ppb (0) 0.0 ppb (0) 0.29 ppb (3) 25.0 μg/m3 (23) 18.3 μg/m3 (63) 63.0
 
Sept. 10, 2019, 10 a.m. 13.0 ppb (12) 1.3 ppb (1) 13.0 ppb (12) 12.0 ppb (11) N/A 0.0 ppb (0) 1.0 ppb (1) 0.27 ppb (3) 25.0 μg/m3 (23) 18.4 μg/m3 (64) 64.0
 
Sept. 10, 2019, 9 a.m. 11.1 ppb (10) 0.2 ppb (0) 11.0 ppb (10) 11.0 ppb (10) N/A 0.0 ppb (0) 4.0 ppb (3) 0.26 ppb (3) 25.0 μg/m3 (23) 18.4 μg/m3 (64) 64.0
 
Sept. 10, 2019, 8 a.m. 12.2 ppb (11) 0.9 ppb (1) 11.0 ppb (10) 11.0 ppb (10) N/A 0.0 ppb (0) 7.0 ppb (5) 0.26 ppb (3) 24.0 μg/m3 (22) 16.9 μg/m3 (60) 60.0
 
Sept. 10, 2019, 7 a.m. 25.0 ppb (23) 8.2 ppb (8) 29.0 ppb (27) 17.0 ppb (16) N/A 0.0 ppb (0) 1.0 ppb (1) 0.3 ppb (3) 24.0 μg/m3 (22) 16.6 μg/m3 (60) 60.0
 
Sept. 10, 2019, 6 a.m. 9.1 ppb (8) 0.1 ppb (0) 9.0 ppb (8) 9.0 ppb (8) N/A 0.0 ppb (0) 8.0 ppb (6) 0.29 ppb (3) 23.0 μg/m3 (21) 16.0 μg/m3 (59) 59.0
 
Sept. 10, 2019, 5 a.m. 9.9 ppb (9) 0.0 ppb (0) 10.0 ppb (9) 10.0 ppb (9) N/A 0.0 ppb (0) 13.0 ppb (10) 0.3 ppb (3) 25.0 μg/m3 (23) 16.6 μg/m3 (60) 60.0
 
Sept. 10, 2019, 4 a.m. 10.3 ppb (10) 0.0 ppb (0) 10.0 ppb (9) 10.0 ppb (9) N/A 0.0 ppb (0) 18.0 ppb (14) 0.3 ppb (3) 23.0 μg/m3 (21) 16.0 μg/m3 (59) 59.0
 
Sept. 10, 2019, 3 a.m. 9.2 ppb (9) -0.1 ppb (0) 8.0 ppb (7) 9.0 ppb (8) N/A 0.0 ppb (0) 26.0 ppb (20) 0.31 ppb (3) 25.0 μg/m3 (23) 15.3 μg/m3 (57) 57.0
 
Sept. 10, 2019, 2 a.m. 10.8 ppb (10) 0.0 ppb (0) 9.0 ppb (8) 11.0 ppb (10) N/A N/A 30.0 ppb (23) 0.35 ppb (4) 24.0 μg/m3 (22) 14.5 μg/m3 (55) 55.0
 
Sept. 10, 2019, 1 a.m. 15.7 ppb (15) 0.0 ppb (0) 14.0 ppb (13) 16.0 ppb (15) N/A N/A 35.0 ppb (27) 0.39 ppb (4) 24.0 μg/m3 (22) 13.8 μg/m3 (54) 54.0
 
Sept. 10, 2019, midnight 31.8 ppb (29) 0.0 ppb (0) 43.0 ppb (40) 32.0 ppb (30) N/A N/A 33.0 ppb (25) 0.48 ppb (5) 24.0 μg/m3 (22) 13.0 μg/m3 (52) 52.0
 
Sept. 9, 2019, 11 p.m. 8.8 ppb (8) -0.1 ppb (0) 9.0 ppb (8) 9.0 ppb (8) N/A 0.0 ppb (0) 64.0 ppb (49) 0.33 ppb (4) 42.0 μg/m3 (38) 13.2 μg/m3 (53) 53.0
 
Sept. 9, 2019, 10 p.m. 5.6 ppb (5) -0.1 ppb (0) 5.0 ppb (5) 6.0 ppb (6) N/A 0.0 ppb (0) 85.0 ppb (67) 0.27 ppb (3) 22.0 μg/m3 (20) 12.1 μg/m3 (50) 67.0
 
Sept. 9, 2019, 9 p.m. 5.5 ppb (5) -0.1 ppb (0) 5.0 ppb (5) 6.0 ppb (6) N/A 0.0 ppb (0) 95.0 ppb (75) 0.27 ppb (3) 21.0 μg/m3 (19) 12.2 μg/m3 (50) 75.0
 
Sept. 9, 2019, 8 p.m. 6.3 ppb (6) 0.0 ppb (0) 6.0 ppb (6) 6.0 ppb (6) N/A 0.0 ppb (0) 104.0 ppb (82) 0.28 ppb (3) 23.0 μg/m3 (21) 13.0 μg/m3 (52) 82.0
 
Sept. 9, 2019, 7 p.m. 6.2 ppb (6) 0.0 ppb (0) 6.0 ppb (6) 6.0 ppb (6) N/A 0.0 ppb (0) 102.0 ppb (81) 0.28 ppb (3) 23.0 μg/m3 (21) 13.2 μg/m3 (53) 81.0
 
Sept. 9, 2019, 6 p.m. 6.7 ppb (6) 0.0 ppb (0) 6.0 ppb (6) 7.0 ppb (6) N/A 0.0 ppb (0) 99.0 ppb (78) 0.28 ppb (3) 22.0 μg/m3 (20) 13.0 μg/m3 (52) 78.0
 
Sept. 9, 2019, 5 p.m. 6.6 ppb (6) 0.0 ppb (0) 6.0 ppb (6) 7.0 ppb (6) N/A 0.0 ppb (0) 90.0 ppb (71) 0.28 ppb (3) 24.0 μg/m3 (22) 12.8 μg/m3 (52) 71.0
 
Sept. 9, 2019, 4 p.m. 10.0 ppb (9) 0.5 ppb (0) 10.0 ppb (9) 10.0 ppb (9) N/A 0.0 ppb (0) 78.0 ppb (61) 0.32 ppb (4) 24.0 μg/m3 (22) 12.0 μg/m3 (50) 61.0
 
Sept. 9, 2019, 3 p.m. 23.3 ppb (22) 3.8 ppb (4) 23.0 ppb (21) 20.0 ppb (19) N/A 0.0 ppb (0) 46.0 ppb (35) 0.41 ppb (5) 27.0 μg/m3 (25) 11.4 μg/m3 (48) 48.0
 
Sept. 9, 2019, 2 p.m. 42.8 ppb (40) 15.5 ppb (14) 42.0 ppb (39) 28.0 ppb (26) N/A 0.0 ppb (0) 17.0 ppb (13) 0.59 ppb (7) 25.0 μg/m3 (23) 11.1 μg/m3 (46) 46.0
 
Sept. 9, 2019, 1 p.m. 69.8 ppb (67) 47.4 ppb (44) 67.0 ppb (64) 22.0 ppb (20) N/A 0.0 ppb (0) 3.0 ppb (2) 0.77 ppb (9) 27.0 μg/m3 (25) 11.6 μg/m3 (48) 67.0
 
Sept. 9, 2019, noon 76.6 ppb (74) 61.3 ppb (58) 77.0 ppb (74) 15.0 ppb (14) N/A 0.0 ppb (0) 0.0 ppb (0) 0.78 ppb (9) 23.0 μg/m3 (21) 11.6 μg/m3 (48) 74.0
 
Sept. 9, 2019, 11 a.m. 74.0 ppb (71) 58.6 ppb (55) 73.0 ppb (70) 15.0 ppb (14) N/A 0.0 ppb (0) 0.0 ppb (0) 0.74 ppb (8) 19.0 μg/m3 (17) 11.8 μg/m3 (49) 71.0
 
Sept. 9, 2019, 10 a.m. 70.7 ppb (68) 54.4 ppb (50) 67.0 ppb (64) 16.0 ppb (15) N/A 0.0 ppb (0) 0.0 ppb (0) 0.71 ppb (8) 20.0 μg/m3 (18) 12.5 μg/m3 (51) 68.0
 
Sept. 9, 2019, 9 a.m. 63.0 ppb (60) 48.4 ppb (45) N/A 15.0 ppb (14) N/A 0.0 ppb (0) N/A 0.7 ppb (8) 20.0 μg/m3 (18) 13.1 μg/m3 (52) 60.0
 
Sept. 9, 2019, 8 a.m. 50.7 ppb (47) 34.3 ppb (32) N/A 16.0 ppb (15) N/A 0.0 ppb (0) N/A 0.67 ppb (7) 19.0 μg/m3 (17) 13.4 μg/m3 (53) 53.0
 
Sept. 9, 2019, 7 a.m. 41.7 ppb (39) 22.6 ppb (21) N/A 19.0 ppb (18) N/A 0.0 ppb (0) 0.0 ppb (0) 0.67 ppb (7) 19.0 μg/m3 (17) 13.3 μg/m3 (53) 53.0
 
Sept. 9, 2019, 6 a.m. 45.6 ppb (42) 22.9 ppb (21) 45.0 ppb (42) 23.0 ppb (21) N/A 0.0 ppb (0) 0.0 ppb (0) 0.74 ppb (8) 20.0 μg/m3 (18) 13.6 μg/m3 (53) 53.0
 
Sept. 9, 2019, 5 a.m. 49.4 ppb (46) 22.1 ppb (20) 50.0 ppb (46) 27.0 ppb (25) N/A 0.0 ppb (0) 0.0 ppb (0) 0.73 ppb (8) 19.0 μg/m3 (17) 12.7 μg/m3 (51) 51.0
 
Sept. 9, 2019, 4 a.m. 53.3 ppb (49) 22.0 ppb (20) 55.0 ppb (51) 31.0 ppb (29) N/A 0.0 ppb (0) 0.0 ppb (0) 0.71 ppb (8) 20.0 μg/m3 (18) 12.8 μg/m3 (52) 52.0
 
Sept. 9, 2019, 3 a.m. 35.0 ppb (32) 5.3 ppb (5) 35.0 ppb (32) 30.0 ppb (28) N/A 0.0 ppb (0) 1.0 ppb (1) 0.6 ppb (7) 18.0 μg/m3 (16) 11.2 μg/m3 (47) 47.0
 
Sept. 9, 2019, 2 a.m. 26.8 ppb (25) 1.2 ppb (1) 31.0 ppb (29) 26.0 ppb (24) N/A 0.0 ppb (0) 11.0 ppb (8) 0.56 ppb (6) 17.0 μg/m3 (15) 10.6 μg/m3 (44) 44.0
 
Sept. 9, 2019, 1 a.m. 24.6 ppb (23) 0.0 ppb (0) 25.0 ppb (23) 25.0 ppb (23) N/A 0.0 ppb (0) 17.0 ppb (13) 0.53 ppb (6) 15.0 μg/m3 (14) 10.3 μg/m3 (43) 43.0
 
Sept. 9, 2019, midnight 24.0 ppb (22) -0.1 ppb (0) 26.0 ppb (24) 24.0 ppb (22) N/A 0.0 ppb (0) 26.0 ppb (20) 0.52 ppb (6) 16.0 μg/m3 (15) 9.7 μg/m3 (40) 40.0
 
Sept. 8, 2019, 11 p.m. N/A N/A 12.0 ppb (11) N/A N/A 0.0 ppb (0) 52.0 ppb (40) 0.35 ppb (4) 17.0 μg/m3 (15) 9.8 μg/m3 (41) 41.0
 
Sept. 8, 2019, 10 p.m. N/A N/A 5.0 ppb (5) N/A N/A 0.0 ppb (0) 76.0 ppb (59) 0.28 ppb (3) 19.0 μg/m3 (17) 10.0 μg/m3 (42) 59.0
 
Sept. 8, 2019, 9 p.m. N/A N/A 3.0 ppb (3) N/A N/A 0.0 ppb (0) 74.0 ppb (57) 0.23 ppb (3) 19.0 μg/m3 (17) 9.7 μg/m3 (40) 57.0
 
Sept. 8, 2019, 8 p.m. N/A N/A 3.0 ppb (3) N/A N/A 0.0 ppb (0) 69.0 ppb (53) 0.22 ppb (2) 18.0 μg/m3 (16) 10.0 μg/m3 (42) 53.0
 
Sept. 8, 2019, 7 p.m. N/A N/A 4.0 ppb (4) N/A N/A 0.0 ppb (0) 76.0 ppb (59) 0.23 ppb (3) 19.0 μg/m3 (17) 10.9 μg/m3 (45) 59.0
 
Sept. 8, 2019, 6 p.m. 5.8 ppb (5) 0.1 ppb (0) 5.0 ppb (5) 6.0 ppb (6) N/A 0.0 ppb (0) 80.0 ppb (62) 0.24 ppb (3) 20.0 μg/m3 (18) 11.0 μg/m3 (46) 62.0
 
Sept. 8, 2019, 5 p.m. 4.8 ppb (4) 0.1 ppb (0) 4.0 ppb (4) 5.0 ppb (5) N/A 0.0 ppb (0) 70.0 ppb (54) 0.23 ppb (3) 18.0 μg/m3 (16) 10.3 μg/m3 (43) 54.0
 
Sept. 8, 2019, 4 p.m. 3.7 ppb (3) 0.1 ppb (0) 3.0 ppb (3) 4.0 ppb (4) N/A 0.0 ppb (0) 56.0 ppb (43) 0.21 ppb (2) 17.0 μg/m3 (15) 9.5 μg/m3 (40) 43.0
 
Sept. 8, 2019, 3 p.m. 3.3 ppb (3) 0.0 ppb (0) 3.0 ppb (3) 3.0 ppb (3) N/A 0.0 ppb (0) 50.0 ppb (38) 0.23 ppb (3) 16.0 μg/m3 (15) 9.1 μg/m3 (38) 38.0
 
Sept. 8, 2019, 2 p.m. 6.6 ppb (6) 0.6 ppb (1) 6.0 ppb (6) 6.0 ppb (6) N/A 0.0 ppb (0) 41.0 ppb (32) 0.28 ppb (3) 17.0 μg/m3 (15) 9.8 μg/m3 (41) 41.0
 
Sept. 8, 2019, 1 p.m. 21.9 ppb (20) 10.8 ppb (10) 21.0 ppb (19) 11.0 ppb (10) N/A 0.0 ppb (0) 10.0 ppb (8) 0.49 ppb (5) 17.0 μg/m3 (15) 11.0 μg/m3 (46) 46.0
 
Sept. 8, 2019, noon 23.3 ppb (22) 13.1 ppb (12) 25.0 ppb (23) 10.0 ppb (9) N/A 0.0 ppb (0) 1.0 ppb (1) 0.51 ppb (6) 17.0 μg/m3 (15) 11.9 μg/m3 (50) 50.0