AQSQID: 100032004

Site Name: Mlk

Location: Wilmington, DE

Reporting: True, Located: True

Current AQI: 55.0

Wilmington DE, US: 39.7394, -75.5581

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
Sept. 22, 2019, 6 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 63.0 ppb (48) 0.21 ppb (2) N/A 14.2 μg/m3 (55) 55.0
 
Sept. 22, 2019, 5 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 60.0 ppb (46) 0.2 ppb (2) N/A 13.2 μg/m3 (53) 53.0
 
Sept. 22, 2019, 4 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 56.0 ppb (43) 0.2 ppb (2) N/A 13.1 μg/m3 (52) 52.0
 
Sept. 22, 2019, 3 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 49.0 ppb (38) 0.23 ppb (3) N/A 12.4 μg/m3 (51) 51.0
 
Sept. 22, 2019, 2 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 36.0 ppb (28) 0.27 ppb (3) N/A 11.8 μg/m3 (49) 49.0
 
Sept. 22, 2019, 1 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 28.0 ppb (22) 0.26 ppb (3) N/A 11.0 μg/m3 (46) 46.0
 
Sept. 22, 2019, noon N/A N/A N/A N/A N/A 1.0 ppb (1) 24.0 ppb (18) 0.23 ppb (3) N/A 11.0 μg/m3 (46) 46.0
 
Sept. 22, 2019, 11 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 8.0 ppb (6) 0.33 ppb (4) N/A 13.1 μg/m3 (52) 52.0
 
Sept. 22, 2019, 10 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 6.0 ppb (5) 0.51 ppb (6) N/A 13.7 μg/m3 (54) 54.0
 
Sept. 22, 2019, 9 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 4.0 ppb (3) 0.46 ppb (5) N/A 15.3 μg/m3 (57) 57.0
 
Sept. 22, 2019, 8 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 5.0 ppb (4) 0.49 ppb (5) N/A 16.2 μg/m3 (59) 59.0
 
Sept. 22, 2019, 7 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 4.0 ppb (3) 0.52 ppb (6) N/A 17.7 μg/m3 (62) 62.0
 
Sept. 22, 2019, 6 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 3.0 ppb (2) 0.63 ppb (7) N/A 16.9 μg/m3 (60) 60.0
 
Sept. 22, 2019, 5 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 7.0 ppb (5) 0.59 ppb (7) N/A 12.8 μg/m3 (52) 52.0
 
Sept. 22, 2019, 4 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 11.0 ppb (8) 0.55 ppb (6) N/A 11.6 μg/m3 (48) 48.0
 
Sept. 22, 2019, 3 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 34.0 ppb (26) 0.37 ppb (4) N/A 10.0 μg/m3 (42) 42.0
 
Sept. 22, 2019, 2 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 43.0 ppb (33) 0.28 ppb (3) N/A 9.8 μg/m3 (41) 41.0
 
Sept. 22, 2019, 1 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 39.0 ppb (30) 0.27 ppb (3) N/A 9.3 μg/m3 (39) 39.0
 
Sept. 22, 2019, midnight N/A N/A N/A N/A N/A 0.0 ppb (0) 48.0 ppb (37) 0.22 ppb (2) N/A 9.2 μg/m3 (38) 38.0
 
Sept. 21, 2019, 11 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 49.0 ppb (38) 0.24 ppb (3) N/A 8.9 μg/m3 (37) 38.0
 
Sept. 21, 2019, 10 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 67.0 ppb (52) 0.23 ppb (3) N/A 9.4 μg/m3 (39) 52.0
 
Sept. 21, 2019, 9 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 72.0 ppb (56) 0.21 ppb (2) N/A 8.9 μg/m3 (37) 56.0
 
Sept. 21, 2019, 8 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 71.0 ppb (55) 0.21 ppb (2) N/A 9.0 μg/m3 (38) 55.0
 
Sept. 21, 2019, 7 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 71.0 ppb (55) 0.22 ppb (2) N/A 9.3 μg/m3 (39) 55.0
 
Sept. 21, 2019, 6 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 69.0 ppb (53) 0.24 ppb (3) N/A 9.3 μg/m3 (39) 53.0
 
Sept. 21, 2019, 5 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 64.0 ppb (49) 0.23 ppb (3) N/A 9.1 μg/m3 (38) 49.0
 
Sept. 21, 2019, 4 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 56.0 ppb (43) 0.23 ppb (3) N/A 9.2 μg/m3 (38) 43.0
 
Sept. 21, 2019, 3 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 41.0 ppb (32) 0.26 ppb (3) N/A 10.0 μg/m3 (42) 42.0
 
Sept. 21, 2019, 2 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 32.0 ppb (25) 0.28 ppb (3) N/A 10.0 μg/m3 (42) 42.0
 
Sept. 21, 2019, 1 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 22.0 ppb (17) 0.3 ppb (3) N/A 10.4 μg/m3 (43) 43.0
 
Sept. 21, 2019, noon N/A N/A N/A N/A N/A 1.0 ppb (1) 13.0 ppb (10) 0.34 ppb (4) N/A 10.4 μg/m3 (43) 43.0
 
Sept. 21, 2019, 11 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 2.0 ppb (2) 0.42 ppb (5) N/A 10.9 μg/m3 (45) 45.0
 
Sept. 21, 2019, 10 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 5.0 ppb (4) 0.34 ppb (4) N/A 12.1 μg/m3 (50) 50.0
 
Sept. 21, 2019, 9 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 11.0 ppb (8) 0.31 ppb (3) N/A 12.3 μg/m3 (51) 51.0
 
Sept. 21, 2019, 8 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 7.0 ppb (5) 0.39 ppb (4) N/A 13.0 μg/m3 (52) 52.0
 
Sept. 21, 2019, 7 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 9.0 ppb (7) 0.38 ppb (4) N/A 11.6 μg/m3 (48) 48.0
 
Sept. 21, 2019, 6 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 28.0 ppb (22) 0.25 ppb (3) N/A 9.4 μg/m3 (39) 39.0
 
Sept. 21, 2019, 5 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 31.0 ppb (24) 0.24 ppb (3) N/A 9.8 μg/m3 (41) 41.0
 
Sept. 21, 2019, 4 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 22.0 ppb (17) 0.38 ppb (4) N/A 12.7 μg/m3 (51) 51.0
 
Sept. 21, 2019, 3 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 31.0 ppb (24) 0.4 ppb (4) N/A 12.2 μg/m3 (50) 50.0
 
Sept. 21, 2019, 2 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 37.0 ppb (28) 0.39 ppb (4) N/A 12.4 μg/m3 (51) 51.0
 
Sept. 21, 2019, 1 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 42.0 ppb (32) 0.41 ppb (5) N/A 13.8 μg/m3 (54) 54.0
 
Sept. 21, 2019, midnight N/A N/A N/A N/A N/A 1.0 ppb (1) 45.0 ppb (35) 0.41 ppb (5) N/A 11.6 μg/m3 (48) 48.0
 
Sept. 20, 2019, 11 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 54.0 ppb (42) 0.35 ppb (4) N/A 9.8 μg/m3 (41) 42.0
 
Sept. 20, 2019, 10 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 63.0 ppb (48) 0.27 ppb (3) N/A 8.9 μg/m3 (37) 48.0
 
Sept. 20, 2019, 9 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 62.0 ppb (48) 0.27 ppb (3) N/A 8.4 μg/m3 (35) 48.0
 
Sept. 20, 2019, 8 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 62.0 ppb (48) 0.26 ppb (3) N/A 8.2 μg/m3 (34) 48.0
 
Sept. 20, 2019, 7 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 60.0 ppb (46) 0.23 ppb (3) N/A 7.5 μg/m3 (31) 46.0
 
Sept. 20, 2019, 6 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 55.0 ppb (42) 0.21 ppb (2) N/A 7.6 μg/m3 (32) 42.0
 
Sept. 20, 2019, 5 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 50.0 ppb (38) 0.21 ppb (2) N/A 7.4 μg/m3 (31) 38.0
 
Sept. 20, 2019, 4 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 47.0 ppb (36) 0.2 ppb (2) N/A 6.7 μg/m3 (28) 36.0
 
Sept. 20, 2019, 3 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 38.0 ppb (29) 0.21 ppb (2) N/A 8.8 μg/m3 (37) 37.0
 
Sept. 20, 2019, 2 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 32.0 ppb (25) 0.22 ppb (2) N/A 7.3 μg/m3 (30) 30.0
 
Sept. 20, 2019, 1 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 23.0 ppb (18) 0.27 ppb (3) N/A 8.0 μg/m3 (33) 33.0
 
Sept. 20, 2019, noon N/A N/A N/A N/A N/A 1.0 ppb (1) 15.0 ppb (12) 0.33 ppb (4) N/A 9.5 μg/m3 (40) 40.0
 
Sept. 20, 2019, 11 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 4.0 ppb (3) 0.47 ppb (5) N/A 9.0 μg/m3 (38) 38.0
 
Sept. 20, 2019, 10 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 4.0 ppb (3) 0.29 ppb (3) N/A 7.5 μg/m3 (31) 31.0
 
Sept. 20, 2019, 9 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 15.0 ppb (12) 0.23 ppb (3) N/A 6.7 μg/m3 (28) 28.0
 
Sept. 20, 2019, 8 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 17.0 ppb (13) 0.2 ppb (2) N/A 6.5 μg/m3 (27) 27.0
 
Sept. 20, 2019, 7 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 19.0 ppb (15) 0.22 ppb (2) N/A 6.5 μg/m3 (27) 27.0
 
Sept. 20, 2019, 4 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 19.0 ppb (15) 0.27 ppb (3) N/A 7.5 μg/m3 (31) 31.0
 
Sept. 20, 2019, 3 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 17.0 ppb (13) 0.31 ppb (3) N/A 7.7 μg/m3 (32) 32.0
 
Sept. 20, 2019, 2 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 12.0 ppb (9) 0.42 ppb (5) N/A 9.0 μg/m3 (38) 38.0
 
Sept. 20, 2019, 1 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 5.0 ppb (4) 0.64 ppb (7) N/A 10.8 μg/m3 (45) 45.0
 
Sept. 20, 2019, midnight N/A N/A N/A N/A N/A 1.0 ppb (1) 21.0 ppb (16) 0.42 ppb (5) N/A 7.8 μg/m3 (32) 32.0
 
Sept. 19, 2019, 11 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 36.0 ppb (28) 0.29 ppb (3) N/A 6.5 μg/m3 (27) 28.0
 
Sept. 19, 2019, 10 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 43.0 ppb (33) 0.23 ppb (3) N/A 6.1 μg/m3 (25) 33.0
 
Sept. 19, 2019, 9 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 44.0 ppb (34) 0.23 ppb (3) N/A 6.0 μg/m3 (25) 34.0
 
Sept. 19, 2019, 8 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 45.0 ppb (35) 0.21 ppb (2) N/A 5.7 μg/m3 (24) 35.0
 
Sept. 19, 2019, 7 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 44.0 ppb (34) N/A N/A 5.6 μg/m3 (23) 34.0
 
Sept. 19, 2019, 6 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 41.0 ppb (32) 0.2 ppb (2) N/A 5.6 μg/m3 (23) 32.0
 
Sept. 19, 2019, 5 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 37.0 ppb (28) 0.2 ppb (2) N/A 5.2 μg/m3 (22) 28.0
 
Sept. 19, 2019, 4 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 34.0 ppb (26) 0.21 ppb (2) N/A 4.9 μg/m3 (20) 26.0
 
Sept. 19, 2019, 3 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 31.0 ppb (24) 0.21 ppb (2) N/A 4.8 μg/m3 (20) 24.0
 
Sept. 19, 2019, 2 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 28.0 ppb (22) 0.22 ppb (2) N/A 5.2 μg/m3 (22) 22.0
 
Sept. 19, 2019, 1 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 23.0 ppb (18) 0.24 ppb (3) N/A 5.3 μg/m3 (22) 22.0
 
Sept. 19, 2019, noon N/A N/A N/A N/A N/A 1.0 ppb (1) 18.0 ppb (14) 0.3 ppb (3) N/A 5.7 μg/m3 (24) 24.0
 
Sept. 19, 2019, 11 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 13.0 ppb (10) 0.34 ppb (4) N/A 6.2 μg/m3 (26) 26.0
 
Sept. 19, 2019, 10 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 13.0 ppb (10) 0.32 ppb (4) N/A 6.0 μg/m3 (25) 25.0
 
Sept. 19, 2019, 9 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 16.0 ppb (12) 0.25 ppb (3) N/A 5.9 μg/m3 (25) 25.0
 
Sept. 19, 2019, 8 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 19.0 ppb (15) 0.22 ppb (2) N/A 5.8 μg/m3 (24) 24.0
 
Sept. 19, 2019, 7 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 22.0 ppb (17) 0.21 ppb (2) N/A 5.9 μg/m3 (25) 25.0
 
Sept. 19, 2019, 6 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 24.0 ppb (18) 0.18 ppb (2) N/A 5.6 μg/m3 (23) 23.0
 
Sept. 19, 2019, 5 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 29.0 ppb (22) N/A N/A 5.4 μg/m3 (23) 23.0
 
Sept. 19, 2019, 4 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 27.0 ppb (21) 0.19 ppb (2) N/A 6.0 μg/m3 (25) 25.0
 
Sept. 19, 2019, 3 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 28.0 ppb (22) 0.21 ppb (2) N/A 5.7 μg/m3 (24) 24.0
 
Sept. 19, 2019, 2 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 30.0 ppb (23) 0.19 ppb (2) N/A 5.6 μg/m3 (23) 23.0
 
Sept. 19, 2019, 1 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 30.0 ppb (23) 0.19 ppb (2) N/A 5.7 μg/m3 (24) 24.0
 
Sept. 19, 2019, midnight N/A N/A N/A N/A N/A 0.0 ppb (0) 31.0 ppb (24) 0.21 ppb (2) N/A 5.5 μg/m3 (23) 24.0
 
Sept. 18, 2019, 11 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 32.0 ppb (25) 0.26 ppb (3) N/A 5.7 μg/m3 (24) 25.0
 
Sept. 18, 2019, 10 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 39.0 ppb (30) 0.28 ppb (3) N/A 4.9 μg/m3 (20) 30.0
 
Sept. 18, 2019, 9 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 41.0 ppb (32) 0.27 ppb (3) N/A 5.1 μg/m3 (21) 32.0
 
Sept. 18, 2019, 8 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 42.0 ppb (32) 0.23 ppb (3) N/A 5.5 μg/m3 (23) 32.0
 
Sept. 18, 2019, 7 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 41.0 ppb (32) 0.24 ppb (3) N/A 6.2 μg/m3 (26) 32.0
 
Sept. 18, 2019, 6 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 40.0 ppb (31) 0.22 ppb (2) N/A 6.2 μg/m3 (26) 31.0
 
Sept. 18, 2019, 5 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 37.0 ppb (28) 0.23 ppb (3) N/A 6.0 μg/m3 (25) 28.0
 
Sept. 18, 2019, 4 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 32.0 ppb (25) 0.24 ppb (3) N/A 6.3 μg/m3 (26) 26.0
 
Sept. 18, 2019, 3 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 27.0 ppb (21) 0.26 ppb (3) N/A 6.4 μg/m3 (27) 27.0
 
Sept. 18, 2019, 2 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 20.0 ppb (15) 0.3 ppb (3) N/A 6.0 μg/m3 (25) 25.0
 
Sept. 18, 2019, 1 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 22.0 ppb (17) 0.28 ppb (3) N/A 5.4 μg/m3 (23) 23.0
 
Sept. 18, 2019, noon N/A N/A N/A N/A N/A 1.0 ppb (1) 19.0 ppb (15) 0.32 ppb (4) N/A 5.7 μg/m3 (24) 24.0
 
Sept. 18, 2019, 11 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 13.0 ppb (10) 0.4 ppb (4) N/A 6.5 μg/m3 (27) 27.0
 
Sept. 18, 2019, 10 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 7.0 ppb (5) 0.39 ppb (4) N/A 6.9 μg/m3 (29) 29.0
 
Sept. 18, 2019, 9 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 9.0 ppb (7) 0.3 ppb (3) N/A 6.1 μg/m3 (25) 25.0
 
Sept. 18, 2019, 8 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 12.0 ppb (9) 0.26 ppb (3) N/A 6.1 μg/m3 (25) 25.0
 
Sept. 18, 2019, 7 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 15.0 ppb (12) 0.27 ppb (3) N/A 5.8 μg/m3 (24) 24.0
 
Sept. 18, 2019, 6 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 11.0 ppb (8) 0.26 ppb (3) N/A 6.3 μg/m3 (26) 26.0
 
Sept. 18, 2019, 5 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 12.0 ppb (9) 0.28 ppb (3) N/A 5.9 μg/m3 (25) 25.0
 
Sept. 18, 2019, 4 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 15.0 ppb (12) 0.32 ppb (4) N/A 6.1 μg/m3 (25) 25.0
 
Sept. 18, 2019, 3 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 34.0 ppb (26) 0.19 ppb (2) N/A 5.1 μg/m3 (21) 26.0
 
Sept. 18, 2019, 2 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 33.0 ppb (25) 0.19 ppb (2) N/A 5.7 μg/m3 (24) 25.0
 
Sept. 18, 2019, 1 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 33.0 ppb (25) 0.26 ppb (3) N/A 5.8 μg/m3 (24) 25.0
 
Sept. 18, 2019, midnight N/A N/A N/A N/A N/A 0.0 ppb (0) 34.0 ppb (26) 0.24 ppb (3) N/A 4.1 μg/m3 (17) 26.0
 
Sept. 17, 2019, 11 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 36.0 ppb (28) 0.28 ppb (3) N/A 4.0 μg/m3 (17) 28.0
 
Sept. 17, 2019, 10 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 43.0 ppb (33) 0.23 ppb (3) N/A 3.9 μg/m3 (16) 33.0
 
Sept. 17, 2019, 9 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 46.0 ppb (35) 0.25 ppb (3) N/A 4.4 μg/m3 (18) 35.0
 
Sept. 17, 2019, 8 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 50.0 ppb (38) 0.2 ppb (2) N/A 4.6 μg/m3 (19) 38.0
 
Sept. 17, 2019, 7 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 50.0 ppb (38) 0.23 ppb (3) N/A 4.8 μg/m3 (20) 38.0
 
Sept. 17, 2019, 6 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 48.0 ppb (37) 0.23 ppb (3) N/A 5.3 μg/m3 (22) 37.0
 
Sept. 17, 2019, 5 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 40.0 ppb (31) 0.21 ppb (2) N/A 5.9 μg/m3 (25) 31.0
 
Sept. 17, 2019, 4 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 34.0 ppb (26) 0.21 ppb (2) N/A 5.5 μg/m3 (23) 26.0
 
Sept. 17, 2019, 3 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 30.0 ppb (23) N/A N/A 5.2 μg/m3 (22) 23.0
 
Sept. 17, 2019, 2 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 25.0 ppb (19) 0.23 ppb (3) N/A 5.0 μg/m3 (21) 21.0
 
Sept. 17, 2019, 1 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 24.0 ppb (18) 0.22 ppb (2) N/A 4.7 μg/m3 (20) 20.0
 
Sept. 17, 2019, noon N/A N/A N/A N/A N/A 1.0 ppb (1) 24.0 ppb (18) 0.2 ppb (2) N/A 4.4 μg/m3 (18) 18.0
 
Sept. 17, 2019, 11 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 24.0 ppb (18) 0.21 ppb (2) N/A 4.6 μg/m3 (19) 19.0
 
Sept. 17, 2019, 10 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 27.0 ppb (21) 0.21 ppb (2) N/A 7.2 μg/m3 (30) 30.0
 
Sept. 17, 2019, 9 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 25.0 ppb (19) 0.26 ppb (3) N/A 9.2 μg/m3 (38) 38.0
 
Sept. 17, 2019, 8 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 31.0 ppb (24) 0.25 ppb (3) N/A 9.0 μg/m3 (38) 38.0
 
Sept. 17, 2019, 7 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 37.0 ppb (28) 0.25 ppb (3) N/A 9.3 μg/m3 (39) 39.0
 
Sept. 17, 2019, 6 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 42.0 ppb (32) 0.25 ppb (3) N/A 9.9 μg/m3 (41) 41.0
 
Sept. 17, 2019, 5 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 51.0 ppb (39) 0.24 ppb (3) N/A 9.7 μg/m3 (40) 40.0
 
Sept. 17, 2019, 4 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 53.0 ppb (41) 0.24 ppb (3) N/A 9.2 μg/m3 (38) 41.0
 
Sept. 17, 2019, 3 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 39.0 ppb (30) 0.23 ppb (3) N/A 8.1 μg/m3 (34) 34.0
 
Sept. 17, 2019, 2 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 34.0 ppb (26) 0.27 ppb (3) N/A 7.8 μg/m3 (32) 32.0
 
Sept. 17, 2019, 1 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 46.0 ppb (35) 0.23 ppb (3) N/A 7.7 μg/m3 (32) 35.0
 
Sept. 17, 2019, midnight N/A N/A N/A N/A N/A 1.0 ppb (1) 44.0 ppb (34) 0.33 ppb (4) N/A 9.2 μg/m3 (38) 38.0
 
Sept. 16, 2019, 11 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 42.0 ppb (32) 0.35 ppb (4) N/A 8.3 μg/m3 (35) 35.0
 
Sept. 16, 2019, 10 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 46.0 ppb (35) 0.32 ppb (4) N/A 7.7 μg/m3 (32) 35.0
 
Sept. 16, 2019, 9 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 54.0 ppb (42) 0.27 ppb (3) N/A 6.9 μg/m3 (29) 42.0
 
Sept. 16, 2019, 8 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 53.0 ppb (41) 0.25 ppb (3) N/A 6.6 μg/m3 (28) 41.0
 
Sept. 16, 2019, 7 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 58.0 ppb (45) 0.22 ppb (2) N/A 6.4 μg/m3 (27) 45.0
 
Sept. 16, 2019, 6 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 60.0 ppb (46) 0.21 ppb (2) N/A 6.3 μg/m3 (26) 46.0
 
Sept. 16, 2019, 5 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 57.0 ppb (44) 0.23 ppb (3) N/A 7.0 μg/m3 (29) 44.0
 
Sept. 16, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (35) 0.27 ppb (3) N/A 7.6 μg/m3 (32) 35.0
 
Sept. 16, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A N/A 0.21 ppb (2) N/A 5.6 μg/m3 (23) 23.0
 
Sept. 16, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A N/A 0.28 ppb (3) N/A 7.8 μg/m3 (32) 32.0
 
Sept. 16, 2019, 1 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 35.0 ppb (27) 0.27 ppb (3) N/A 6.1 μg/m3 (25) 27.0
 
Sept. 16, 2019, noon N/A N/A N/A N/A N/A 1.0 ppb (1) 24.0 ppb (18) 0.32 ppb (4) N/A 6.4 μg/m3 (27) 27.0
 
Sept. 16, 2019, 11 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 16.0 ppb (12) 0.4 ppb (4) N/A 7.2 μg/m3 (30) 30.0
 
Sept. 16, 2019, 10 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 12.0 ppb (9) 0.39 ppb (4) N/A 7.0 μg/m3 (29) 29.0
 
Sept. 16, 2019, 9 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 21.0 ppb (16) 0.22 ppb (2) N/A 6.1 μg/m3 (25) 25.0
 
Sept. 16, 2019, 8 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 7.0 ppb (5) 0.23 ppb (3) N/A 6.2 μg/m3 (26) 26.0
 
Sept. 16, 2019, 7 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 3.0 ppb (2) 0.24 ppb (3) N/A 6.5 μg/m3 (27) 27.0
 
Sept. 16, 2019, 6 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 9.0 ppb (7) 0.25 ppb (3) N/A 6.3 μg/m3 (26) 26.0
 
Sept. 16, 2019, 5 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 10.0 ppb (8) 0.3 ppb (3) N/A 7.3 μg/m3 (30) 30.0
 
Sept. 16, 2019, 4 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 14.0 ppb (11) 0.3 ppb (3) N/A 6.5 μg/m3 (27) 27.0
 
Sept. 16, 2019, 3 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 29.0 ppb (22) 0.24 ppb (3) N/A 5.6 μg/m3 (23) 23.0
 
Sept. 16, 2019, 2 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 21.0 ppb (16) 0.31 ppb (3) N/A 6.2 μg/m3 (26) 26.0
 
Sept. 16, 2019, 1 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 23.0 ppb (18) 0.34 ppb (4) N/A 6.3 μg/m3 (26) 26.0
 
Sept. 16, 2019, midnight N/A N/A N/A N/A N/A 0.0 ppb (0) 27.0 ppb (21) 0.37 ppb (4) N/A 6.6 μg/m3 (28) 28.0
 
Sept. 15, 2019, 11 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 33.0 ppb (25) 0.46 ppb (5) N/A 6.1 μg/m3 (25) 25.0
 
Sept. 15, 2019, 10 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 44.0 ppb (34) 0.22 ppb (2) N/A 4.7 μg/m3 (20) 34.0
 
Sept. 15, 2019, 9 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 49.0 ppb (38) 0.17 ppb (2) N/A 4.3 μg/m3 (18) 38.0
 
Sept. 15, 2019, 8 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 50.0 ppb (38) 0.16 ppb (2) N/A 4.1 μg/m3 (17) 38.0
 
Sept. 15, 2019, 7 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 51.0 ppb (39) 0.17 ppb (2) N/A 4.4 μg/m3 (18) 39.0
 
Sept. 15, 2019, 6 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 48.0 ppb (37) 0.17 ppb (2) N/A 4.6 μg/m3 (19) 37.0
 
Sept. 15, 2019, 5 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 45.0 ppb (35) 0.17 ppb (2) N/A 5.0 μg/m3 (21) 35.0