AQSQID: 240270006

Site Name: Howard County Near Road

Location: Howard Co, MD

Reporting: True, Located: True

Current AQI: 19.0

Howard Co MD, US: 39.143197, -76.846192

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
Nov. 16, 2019, 2 p.m. 20.7 ppb (19) 6.7 ppb (6) N/A 14.0 ppb (13) N/A N/A N/A 0.23 ppb (3) N/A N/A 19.0
 
Nov. 16, 2019, 1 p.m. 26.8 ppb (25) 10.6 ppb (10) N/A 16.0 ppb (15) N/A N/A N/A 0.22 ppb (2) N/A N/A 25.0
 
Nov. 16, 2019, noon 46.5 ppb (43) 24.0 ppb (22) N/A 23.0 ppb (21) N/A N/A N/A 0.23 ppb (3) N/A N/A 43.0
 
Nov. 16, 2019, 11 a.m. 52.7 ppb (49) 27.2 ppb (25) N/A 25.0 ppb (23) N/A N/A N/A 0.23 ppb (3) N/A N/A 49.0
 
Nov. 16, 2019, 10 a.m. 43.8 ppb (41) 20.1 ppb (19) N/A 24.0 ppb (22) N/A N/A N/A 0.22 ppb (2) N/A N/A 41.0
 
Nov. 16, 2019, 9 a.m. 40.7 ppb (38) 20.2 ppb (19) N/A 21.0 ppb (19) N/A N/A N/A 0.21 ppb (2) N/A N/A 38.0
 
Nov. 16, 2019, 8 a.m. 55.6 ppb (52) 34.6 ppb (32) N/A 21.0 ppb (19) N/A N/A N/A 0.2 ppb (2) N/A N/A 52.0
 
Nov. 16, 2019, 7 a.m. 27.9 ppb (26) 8.1 ppb (8) N/A 20.0 ppb (19) N/A N/A N/A 0.22 ppb (2) N/A N/A 26.0
 
Nov. 16, 2019, 6 a.m. 25.2 ppb (23) 7.2 ppb (7) N/A 18.0 ppb (17) N/A N/A N/A 0.23 ppb (3) N/A N/A 23.0
 
Nov. 16, 2019, 5 a.m. 30.4 ppb (28) 11.0 ppb (10) N/A 19.0 ppb (18) N/A N/A N/A 0.28 ppb (3) N/A N/A 28.0
 
Nov. 16, 2019, 4 a.m. 40.1 ppb (37) 17.7 ppb (16) N/A 22.0 ppb (20) N/A N/A N/A N/A N/A N/A 37.0
 
Nov. 16, 2019, 3 a.m. 42.7 ppb (40) 20.7 ppb (19) N/A 22.0 ppb (20) N/A N/A N/A 0.4 ppb (4) N/A N/A 40.0
 
Nov. 16, 2019, 2 a.m. 40.8 ppb (38) 18.6 ppb (17) N/A 22.0 ppb (20) N/A N/A N/A 0.35 ppb (4) N/A N/A 38.0
 
Nov. 16, 2019, 1 a.m. 29.5 ppb (27) 10.2 ppb (9) N/A 19.0 ppb (18) N/A N/A N/A 0.31 ppb (3) N/A N/A 27.0
 
Nov. 16, 2019, midnight 30.6 ppb (28) 10.9 ppb (10) N/A 20.0 ppb (19) N/A N/A N/A 0.27 ppb (3) N/A N/A 28.0
 
Nov. 15, 2019, 11 p.m. 28.8 ppb (27) 11.6 ppb (11) N/A 17.0 ppb (16) N/A N/A N/A 0.25 ppb (3) N/A N/A 27.0
 
Nov. 15, 2019, 10 p.m. 19.1 ppb (18) 4.2 ppb (4) N/A 15.0 ppb (14) N/A N/A N/A 0.23 ppb (3) N/A N/A 18.0
 
Nov. 15, 2019, 9 p.m. 14.6 ppb (14) 2.3 ppb (2) N/A 12.0 ppb (11) N/A N/A N/A 0.22 ppb (2) N/A N/A 14.0
 
Nov. 15, 2019, 8 p.m. 11.9 ppb (11) 1.6 ppb (1) N/A 10.0 ppb (9) N/A N/A N/A 0.19 ppb (2) N/A N/A 11.0
 
Nov. 15, 2019, 7 p.m. 13.6 ppb (13) 2.4 ppb (2) N/A 11.0 ppb (10) N/A N/A N/A 0.2 ppb (2) N/A N/A 13.0
 
Nov. 15, 2019, 6 p.m. 15.3 ppb (14) 2.7 ppb (3) N/A 13.0 ppb (12) N/A N/A N/A 0.21 ppb (2) N/A N/A 14.0
 
Nov. 15, 2019, 5 p.m. 18.7 ppb (17) 4.4 ppb (4) N/A 14.0 ppb (13) N/A N/A N/A 0.22 ppb (2) N/A N/A 17.0
 
Nov. 15, 2019, 4 p.m. 23.0 ppb (21) 7.5 ppb (7) N/A 15.0 ppb (14) N/A N/A N/A 0.24 ppb (3) N/A N/A 21.0
 
Nov. 15, 2019, 3 p.m. 28.5 ppb (26) 13.5 ppb (12) N/A 15.0 ppb (14) N/A N/A N/A 0.28 ppb (3) N/A N/A 26.0
 
Nov. 15, 2019, 2 p.m. 62.1 ppb (59) 42.2 ppb (39) N/A 20.0 ppb (19) N/A N/A N/A 0.45 ppb (5) N/A N/A 59.0
 
Nov. 15, 2019, 1 p.m. 78.9 ppb (76) 59.6 ppb (56) N/A 19.0 ppb (18) N/A N/A N/A 0.46 ppb (5) N/A N/A 76.0
 
Nov. 15, 2019, noon 72.0 ppb (69) 51.4 ppb (48) N/A 21.0 ppb (19) N/A N/A N/A 0.43 ppb (5) N/A 15.0 μg/m3 (56) 69.0
 
Nov. 15, 2019, 11 a.m. 85.6 ppb (84) 63.1 ppb (60) N/A 22.0 ppb (20) N/A N/A N/A 0.43 ppb (5) N/A 13.0 μg/m3 (52) 84.0
 
Nov. 15, 2019, 10 a.m. 85.5 ppb (84) 63.7 ppb (60) N/A 22.0 ppb (20) N/A N/A N/A 0.45 ppb (5) N/A 14.0 μg/m3 (54) 84.0
 
Nov. 15, 2019, 9 a.m. 63.8 ppb (60) 42.7 ppb (40) N/A 21.0 ppb (19) N/A N/A N/A 0.38 ppb (4) N/A 13.0 μg/m3 (52) 60.0
 
Nov. 15, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A N/A 0.37 ppb (4) N/A 12.0 μg/m3 (50) 50.0
 
Nov. 15, 2019, 7 a.m. 67.0 ppb (64) 43.1 ppb (40) N/A 24.0 ppb (22) N/A N/A N/A 0.4 ppb (4) N/A 16.0 μg/m3 (59) 64.0
 
Nov. 15, 2019, 6 a.m. 40.1 ppb (37) 19.4 ppb (18) N/A 21.0 ppb (19) N/A N/A N/A 0.4 ppb (4) N/A 11.0 μg/m3 (46) 46.0
 
Nov. 15, 2019, 5 a.m. 49.4 ppb (46) 27.1 ppb (25) N/A 22.0 ppb (20) N/A N/A N/A 0.42 ppb (5) N/A 14.0 μg/m3 (54) 54.0
 
Nov. 15, 2019, 4 a.m. 65.8 ppb (63) 40.5 ppb (38) N/A 25.0 ppb (23) N/A N/A N/A 0.46 ppb (5) N/A 18.0 μg/m3 (63) 63.0
 
Nov. 15, 2019, 3 a.m. 54.0 ppb (50) 29.7 ppb (28) N/A 24.0 ppb (22) N/A N/A N/A 0.29 ppb (3) N/A 13.0 μg/m3 (52) 52.0
 
Nov. 15, 2019, 2 a.m. 71.5 ppb (69) 44.8 ppb (41) N/A 27.0 ppb (25) N/A N/A N/A 0.32 ppb (4) N/A 11.0 μg/m3 (46) 69.0
 
Nov. 15, 2019, 1 a.m. 42.4 ppb (39) 20.0 ppb (19) N/A 22.0 ppb (20) N/A N/A N/A 0.24 ppb (3) N/A 10.0 μg/m3 (42) 42.0
 
Nov. 15, 2019, midnight 30.6 ppb (28) 9.8 ppb (9) N/A 21.0 ppb (19) N/A N/A N/A 0.19 ppb (2) N/A 8.0 μg/m3 (33) 33.0
 
Nov. 14, 2019, 11 p.m. 33.1 ppb (31) 10.8 ppb (10) N/A 22.0 ppb (20) N/A N/A N/A 0.18 ppb (2) N/A 8.0 μg/m3 (33) 33.0
 
Nov. 14, 2019, 10 p.m. 42.4 ppb (39) 15.9 ppb (15) N/A 27.0 ppb (25) N/A N/A N/A 0.22 ppb (2) N/A 10.0 μg/m3 (42) 42.0
 
Nov. 14, 2019, 9 p.m. 43.2 ppb (40) 18.1 ppb (17) N/A 25.0 ppb (23) N/A N/A N/A 0.22 ppb (2) N/A 9.0 μg/m3 (38) 40.0
 
Nov. 14, 2019, 8 p.m. 42.4 ppb (39) 19.3 ppb (18) N/A 23.0 ppb (21) N/A N/A N/A 0.21 ppb (2) N/A 5.0 μg/m3 (21) 39.0
 
Nov. 14, 2019, 7 p.m. 34.4 ppb (32) 15.2 ppb (14) N/A 19.0 ppb (18) N/A N/A N/A 0.2 ppb (2) N/A 5.0 μg/m3 (21) 32.0
 
Nov. 14, 2019, 6 p.m. 41.8 ppb (39) 21.4 ppb (20) N/A 20.0 ppb (19) N/A N/A N/A 0.22 ppb (2) N/A 6.0 μg/m3 (25) 39.0
 
Nov. 14, 2019, 5 p.m. 47.8 ppb (44) 26.5 ppb (25) N/A 21.0 ppb (19) N/A N/A N/A 0.23 ppb (3) N/A 7.0 μg/m3 (29) 44.0
 
Nov. 14, 2019, 4 p.m. 52.9 ppb (49) 29.9 ppb (28) N/A 23.0 ppb (21) N/A N/A N/A 0.25 ppb (3) N/A 8.0 μg/m3 (33) 49.0
 
Nov. 14, 2019, 3 p.m. 70.0 ppb (67) 44.8 ppb (41) N/A 25.0 ppb (23) N/A N/A N/A 0.35 ppb (4) N/A 10.0 μg/m3 (42) 67.0
 
Nov. 14, 2019, 2 p.m. 87.3 ppb (85) 61.6 ppb (58) N/A 26.0 ppb (24) N/A N/A N/A 0.46 ppb (5) N/A 13.0 μg/m3 (52) 85.0
 
Nov. 14, 2019, 1 p.m. 113.3 ppb (102) 84.7 ppb (83) N/A 29.0 ppb (27) N/A N/A N/A 0.52 ppb (6) N/A 9.0 μg/m3 (38) 102.0
 
Nov. 14, 2019, noon 146.9 ppb (109) 117.1 ppb (103) N/A 30.0 ppb (28) N/A N/A N/A 0.61 ppb (7) N/A 17.0 μg/m3 (61) 109.0
 
Nov. 14, 2019, 11 a.m. 149.7 ppb (109) 119.6 ppb (104) N/A 30.0 ppb (28) N/A N/A N/A 0.58 ppb (6) N/A 14.0 μg/m3 (54) 109.0
 
Nov. 14, 2019, 10 a.m. 151.1 ppb (110) 120.6 ppb (104) N/A 31.0 ppb (29) N/A N/A N/A 0.52 ppb (6) N/A 14.0 μg/m3 (54) 110.0
 
Nov. 14, 2019, 9 a.m. 131.6 ppb (106) 104.2 ppb (101) N/A 27.0 ppb (25) N/A N/A N/A 0.43 ppb (5) N/A 10.0 μg/m3 (42) 106.0
 
Nov. 14, 2019, 8 a.m. 122.7 ppb (104) 98.1 ppb (97) N/A 25.0 ppb (23) N/A N/A N/A 0.42 ppb (5) N/A 12.0 μg/m3 (50) 104.0
 
Nov. 14, 2019, 7 a.m. 93.0 ppb (91) 67.2 ppb (64) N/A 26.0 ppb (24) N/A N/A N/A 0.42 ppb (5) N/A 12.0 μg/m3 (50) 91.0
 
Nov. 14, 2019, 6 a.m. 80.8 ppb (79) 57.6 ppb (54) N/A 23.0 ppb (21) N/A N/A N/A 0.43 ppb (5) N/A 10.0 μg/m3 (42) 79.0
 
Nov. 14, 2019, 5 a.m. 73.3 ppb (71) 49.6 ppb (46) N/A 24.0 ppb (22) N/A N/A N/A 0.43 ppb (5) N/A 9.0 μg/m3 (38) 71.0
 
Nov. 14, 2019, 4 a.m. 72.3 ppb (69) 47.9 ppb (44) N/A 24.0 ppb (22) N/A N/A N/A N/A N/A 8.0 μg/m3 (33) 69.0
 
Nov. 14, 2019, 3 a.m. 71.9 ppb (69) 46.8 ppb (43) N/A 25.0 ppb (23) N/A N/A N/A 0.43 ppb (5) N/A 7.0 μg/m3 (29) 69.0
 
Nov. 14, 2019, 2 a.m. 43.6 ppb (40) 21.1 ppb (20) N/A 23.0 ppb (21) N/A N/A N/A 0.33 ppb (4) N/A 6.0 μg/m3 (25) 40.0
 
Nov. 14, 2019, 1 a.m. 33.5 ppb (31) 12.8 ppb (12) N/A 21.0 ppb (19) N/A N/A N/A 0.27 ppb (3) N/A 10.0 μg/m3 (42) 42.0
 
Nov. 14, 2019, midnight 57.0 ppb (53) 30.1 ppb (28) N/A 27.0 ppb (25) N/A N/A N/A 0.28 ppb (3) N/A 11.0 μg/m3 (46) 53.0
 
Nov. 13, 2019, 11 p.m. 36.1 ppb (33) 14.8 ppb (14) N/A 21.0 ppb (19) N/A N/A N/A 0.26 ppb (3) N/A 8.0 μg/m3 (33) 33.0
 
Nov. 13, 2019, 10 p.m. 12.6 ppb (12) 2.7 ppb (3) N/A 10.0 ppb (9) N/A N/A N/A 0.19 ppb (2) N/A 4.0 μg/m3 (17) 17.0
 
Nov. 13, 2019, 9 p.m. 10.5 ppb (10) 2.1 ppb (2) N/A 8.0 ppb (7) N/A N/A N/A 0.19 ppb (2) N/A 3.0 μg/m3 (12) 12.0
 
Nov. 13, 2019, 8 p.m. 13.2 ppb (12) 4.0 ppb (4) N/A 9.0 ppb (8) N/A N/A N/A 0.2 ppb (2) N/A 4.0 μg/m3 (17) 17.0
 
Nov. 13, 2019, 7 p.m. 11.3 ppb (10) 3.5 ppb (3) N/A 8.0 ppb (7) N/A N/A N/A 0.18 ppb (2) N/A 4.0 μg/m3 (17) 17.0
 
Nov. 13, 2019, 6 p.m. 12.5 ppb (12) 4.2 ppb (4) N/A 8.0 ppb (7) N/A N/A N/A 0.19 ppb (2) N/A 5.0 μg/m3 (21) 21.0
 
Nov. 13, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A N/A 0.17 ppb (2) N/A 4.0 μg/m3 (17) 17.0
 
Nov. 13, 2019, 4 p.m. 9.5 ppb (9) 3.1 ppb (3) N/A 6.0 ppb (6) N/A N/A N/A 0.18 ppb (2) N/A 2.0 μg/m3 (8) 9.0
 
Nov. 13, 2019, 3 p.m. 8.8 ppb (8) 2.2 ppb (2) N/A 7.0 ppb (6) N/A N/A N/A 0.17 ppb (2) N/A 2.0 μg/m3 (8) 8.0
 
Nov. 13, 2019, 2 p.m. 10.0 ppb (9) 2.3 ppb (2) N/A 8.0 ppb (7) N/A N/A N/A 0.17 ppb (2) N/A 2.0 μg/m3 (8) 9.0
 
Nov. 13, 2019, 1 p.m. 11.9 ppb (11) 2.4 ppb (2) N/A 9.0 ppb (8) N/A N/A N/A 0.18 ppb (2) N/A 3.0 μg/m3 (12) 12.0
 
Nov. 13, 2019, noon 20.5 ppb (19) 5.3 ppb (5) N/A 15.0 ppb (14) N/A N/A N/A 0.19 ppb (2) N/A 5.0 μg/m3 (21) 21.0
 
Nov. 13, 2019, 11 a.m. 31.4 ppb (29) 11.2 ppb (10) N/A 20.0 ppb (19) N/A N/A N/A 0.19 ppb (2) N/A 2.0 μg/m3 (8) 29.0
 
Nov. 13, 2019, 10 a.m. 19.6 ppb (18) 5.9 ppb (5) N/A 14.0 ppb (13) N/A N/A N/A 0.17 ppb (2) N/A 3.0 μg/m3 (12) 18.0
 
Nov. 13, 2019, 9 a.m. 12.7 ppb (12) 3.2 ppb (3) N/A 9.0 ppb (8) N/A N/A N/A 0.15 ppb (2) N/A 3.0 μg/m3 (12) 12.0
 
Nov. 13, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A N/A 0.14 ppb (2) N/A 4.0 μg/m3 (17) 17.0
 
Nov. 13, 2019, 7 a.m. 10.2 ppb (9) 2.0 ppb (2) N/A 8.0 ppb (7) N/A N/A N/A 0.14 ppb (2) N/A 4.0 μg/m3 (17) 17.0
 
Nov. 13, 2019, 6 a.m. 11.7 ppb (11) 2.4 ppb (2) N/A 9.0 ppb (8) N/A N/A N/A N/A N/A 2.0 μg/m3 (8) 11.0
 
Nov. 13, 2019, 5 a.m. 14.2 ppb (13) 3.6 ppb (3) N/A 11.0 ppb (10) N/A N/A N/A 0.15 ppb (2) N/A 3.0 μg/m3 (12) 13.0
 
Nov. 13, 2019, 4 a.m. 9.5 ppb (9) 1.6 ppb (1) N/A 8.0 ppb (7) N/A N/A N/A N/A N/A 4.0 μg/m3 (17) 17.0
 
Nov. 13, 2019, 3 a.m. 10.9 ppb (10) 1.9 ppb (2) N/A 9.0 ppb (8) N/A N/A N/A 0.28 ppb (3) N/A 5.0 μg/m3 (21) 21.0
 
Nov. 13, 2019, 2 a.m. 10.3 ppb (10) 1.9 ppb (2) N/A 8.0 ppb (7) N/A N/A N/A 0.28 ppb (3) N/A 3.0 μg/m3 (12) 12.0
 
Nov. 13, 2019, 1 a.m. 8.5 ppb (8) 1.4 ppb (1) N/A 7.0 ppb (6) N/A N/A N/A 0.27 ppb (3) N/A 2.0 μg/m3 (8) 8.0
 
Nov. 13, 2019, midnight 7.2 ppb (7) 1.0 ppb (1) N/A 6.0 ppb (6) N/A N/A N/A 0.25 ppb (3) N/A 5.0 μg/m3 (21) 21.0
 
Nov. 12, 2019, 11 p.m. 9.5 ppb (9) 2.0 ppb (2) N/A 8.0 ppb (7) N/A N/A N/A 0.26 ppb (3) N/A 5.0 μg/m3 (21) 21.0
 
Nov. 12, 2019, 10 p.m. 7.7 ppb (7) 1.6 ppb (1) N/A 6.0 ppb (6) N/A N/A N/A 0.26 ppb (3) N/A 6.0 μg/m3 (25) 25.0
 
Nov. 12, 2019, 9 p.m. 6.1 ppb (6) 1.1 ppb (1) N/A 5.0 ppb (5) N/A N/A N/A 0.25 ppb (3) N/A 5.0 μg/m3 (21) 21.0
 
Nov. 12, 2019, 8 p.m. 5.2 ppb (5) 0.8 ppb (1) N/A 4.0 ppb (4) N/A N/A N/A 0.22 ppb (2) N/A 5.0 μg/m3 (21) 21.0
 
Nov. 12, 2019, 7 p.m. 6.2 ppb (6) 1.2 ppb (1) N/A 5.0 ppb (5) N/A N/A N/A 0.23 ppb (3) N/A 3.0 μg/m3 (12) 12.0
 
Nov. 12, 2019, 6 p.m. 8.3 ppb (8) 1.9 ppb (2) N/A 6.0 ppb (6) N/A N/A N/A 0.23 ppb (3) N/A 3.0 μg/m3 (12) 12.0
 
Nov. 12, 2019, 5 p.m. 8.0 ppb (7) 1.6 ppb (1) N/A 6.0 ppb (6) N/A N/A N/A 0.23 ppb (3) N/A 0.0 μg/m3 (0) 7.0
 
Nov. 12, 2019, 4 p.m. 9.1 ppb (8) 2.0 ppb (2) N/A 7.0 ppb (6) N/A N/A N/A 0.22 ppb (2) N/A 3.0 μg/m3 (12) 12.0
 
Nov. 12, 2019, 3 p.m. 9.4 ppb (9) 2.4 ppb (2) N/A 7.0 ppb (6) N/A N/A N/A 0.23 ppb (3) N/A 6.0 μg/m3 (25) 25.0
 
Nov. 12, 2019, 2 p.m. 9.0 ppb (8) 1.8 ppb (2) N/A 7.0 ppb (6) N/A N/A N/A 0.24 ppb (3) N/A 5.0 μg/m3 (21) 21.0
 
Nov. 12, 2019, 1 p.m. 10.2 ppb (9) 1.9 ppb (2) N/A 8.0 ppb (7) N/A N/A N/A 0.25 ppb (3) N/A -1.0 μg/m3 (0) 9.0
 
Nov. 12, 2019, noon 14.6 ppb (14) 3.7 ppb (3) N/A 11.0 ppb (10) N/A N/A N/A 0.24 ppb (3) N/A 5.0 μg/m3 (21) 21.0
 
Nov. 12, 2019, 11 a.m. 18.7 ppb (17) 4.9 ppb (5) N/A 14.0 ppb (13) N/A N/A N/A 0.25 ppb (3) N/A 10.0 μg/m3 (42) 42.0
 
Nov. 12, 2019, 10 a.m. 24.2 ppb (22) 7.2 ppb (7) N/A 17.0 ppb (16) N/A N/A N/A 0.26 ppb (3) N/A 11.0 μg/m3 (46) 46.0
 
Nov. 12, 2019, 9 a.m. 29.3 ppb (27) 9.6 ppb (9) N/A 20.0 ppb (19) N/A N/A N/A 0.27 ppb (3) N/A 12.0 μg/m3 (50) 50.0
 
Nov. 12, 2019, 8 a.m. 34.9 ppb (32) 11.3 ppb (10) N/A 24.0 ppb (22) N/A N/A N/A 0.24 ppb (3) N/A 13.0 μg/m3 (52) 52.0
 
Nov. 12, 2019, 7 a.m. 34.2 ppb (32) 10.8 ppb (10) N/A 23.0 ppb (21) N/A N/A N/A N/A N/A 11.0 μg/m3 (46) 46.0
 
Nov. 12, 2019, 6 a.m. 36.7 ppb (34) 12.1 ppb (11) N/A 25.0 ppb (23) N/A N/A N/A 0.27 ppb (3) N/A 8.0 μg/m3 (33) 34.0
 
Nov. 12, 2019, 5 a.m. 35.8 ppb (33) 11.8 ppb (11) N/A 24.0 ppb (22) N/A N/A N/A 0.29 ppb (3) N/A 9.0 μg/m3 (38) 38.0
 
Nov. 12, 2019, 4 a.m. 36.3 ppb (34) 12.8 ppb (12) N/A 23.0 ppb (21) N/A N/A N/A N/A N/A 9.0 μg/m3 (38) 38.0
 
Nov. 12, 2019, 3 a.m. 35.7 ppb (33) 14.0 ppb (13) N/A 22.0 ppb (20) N/A N/A N/A 0.27 ppb (3) N/A 11.0 μg/m3 (46) 46.0
 
Nov. 12, 2019, 2 a.m. 56.9 ppb (53) 28.6 ppb (26) N/A 28.0 ppb (26) N/A N/A N/A 0.37 ppb (4) N/A 18.0 μg/m3 (63) 63.0
 
Nov. 12, 2019, 1 a.m. 59.5 ppb (56) 28.6 ppb (26) N/A 31.0 ppb (29) N/A N/A N/A 0.36 ppb (4) N/A 19.0 μg/m3 (65) 65.0
 
Nov. 12, 2019, midnight 62.3 ppb (59) 30.8 ppb (29) N/A 32.0 ppb (30) N/A N/A N/A 0.41 ppb (5) N/A 18.0 μg/m3 (63) 63.0
 
Nov. 11, 2019, 11 p.m. 48.8 ppb (45) 18.5 ppb (17) N/A 30.0 ppb (28) N/A N/A N/A 0.34 ppb (4) N/A 16.0 μg/m3 (59) 59.0
 
Nov. 11, 2019, 10 p.m. 42.1 ppb (39) 16.0 ppb (15) N/A 26.0 ppb (24) N/A N/A N/A 0.35 ppb (4) N/A 11.0 μg/m3 (46) 46.0
 
Nov. 11, 2019, 9 p.m. 40.1 ppb (37) 14.3 ppb (13) N/A 26.0 ppb (24) N/A N/A N/A 0.32 ppb (4) N/A 13.0 μg/m3 (52) 52.0
 
Nov. 11, 2019, 8 p.m. 42.0 ppb (39) 16.3 ppb (15) N/A 26.0 ppb (24) N/A N/A N/A 0.33 ppb (4) N/A 8.0 μg/m3 (33) 39.0
 
Nov. 11, 2019, 7 p.m. 46.9 ppb (43) 21.7 ppb (20) N/A 25.0 ppb (23) N/A N/A N/A 0.32 ppb (4) N/A 6.0 μg/m3 (25) 43.0
 
Nov. 11, 2019, 6 p.m. 52.3 ppb (48) 27.3 ppb (25) N/A 25.0 ppb (23) N/A N/A N/A 0.38 ppb (4) N/A 6.0 μg/m3 (25) 48.0
 
Nov. 11, 2019, 5 p.m. 71.9 ppb (69) 44.7 ppb (41) N/A 27.0 ppb (25) N/A N/A N/A 0.5 ppb (6) N/A 11.0 μg/m3 (46) 69.0
 
Nov. 11, 2019, 4 p.m. 82.9 ppb (81) 56.7 ppb (53) N/A 26.0 ppb (24) N/A N/A N/A 0.63 ppb (7) N/A 15.0 μg/m3 (56) 81.0
 
Nov. 11, 2019, 3 p.m. 100.9 ppb (100) 76.6 ppb (74) N/A 24.0 ppb (22) N/A N/A N/A 0.72 ppb (8) N/A 17.0 μg/m3 (61) 100.0
 
Nov. 11, 2019, 2 p.m. 95.7 ppb (94) 76.2 ppb (74) N/A 20.0 ppb (19) N/A N/A N/A 0.67 ppb (7) N/A 17.0 μg/m3 (61) 94.0
 
Nov. 11, 2019, 1 p.m. 80.7 ppb (78) 64.5 ppb (61) N/A 16.0 ppb (15) N/A N/A N/A 0.54 ppb (6) N/A 16.0 μg/m3 (59) 78.0
 
Nov. 11, 2019, noon 68.8 ppb (66) 53.3 ppb (49) N/A 15.0 ppb (14) N/A N/A N/A 0.44 ppb (5) N/A 14.0 μg/m3 (54) 66.0
 
Nov. 11, 2019, 11 a.m. 75.0 ppb (72) 59.1 ppb (55) N/A 16.0 ppb (15) N/A N/A N/A 0.46 ppb (5) N/A 15.0 μg/m3 (56) 72.0
 
Nov. 11, 2019, 10 a.m. 68.2 ppb (65) 51.7 ppb (48) N/A 16.0 ppb (15) N/A N/A N/A 0.45 ppb (5) N/A 18.0 μg/m3 (63) 65.0
 
Nov. 11, 2019, 9 a.m. 62.8 ppb (59) 45.2 ppb (42) N/A 18.0 ppb (17) N/A N/A N/A 0.43 ppb (5) N/A 17.0 μg/m3 (61) 61.0
 
Nov. 11, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A N/A 0.43 ppb (5) N/A 17.0 μg/m3 (61) 61.0
 
Nov. 11, 2019, 7 a.m. 39.9 ppb (37) 23.1 ppb (21) N/A 17.0 ppb (16) N/A N/A N/A 0.42 ppb (5) N/A 14.0 μg/m3 (54) 54.0
 
Nov. 11, 2019, 6 a.m. 37.5 ppb (35) 20.6 ppb (19) N/A 17.0 ppb (16) N/A N/A N/A 0.43 ppb (5) N/A 20.0 μg/m3 (67) 67.0
 
Nov. 11, 2019, 5 a.m. 38.4 ppb (36) 20.1 ppb (19) N/A 18.0 ppb (17) N/A N/A N/A 0.43 ppb (5) N/A 19.0 μg/m3 (65) 65.0
 
Nov. 11, 2019, 4 a.m. 42.5 ppb (39) 22.4 ppb (21) N/A 20.0 ppb (19) N/A N/A N/A 0.42 ppb (5) N/A 13.0 μg/m3 (52) 52.0
 
Nov. 11, 2019, 3 a.m. 48.3 ppb (45) 25.9 ppb (24) N/A 22.0 ppb (20) N/A N/A N/A 0.39 ppb (4) N/A 15.0 μg/m3 (56) 56.0
 
Nov. 11, 2019, 2 a.m. 38.2 ppb (35) 15.7 ppb (15) N/A 22.0 ppb (20) N/A N/A N/A 0.38 ppb (4) N/A 16.0 μg/m3 (59) 59.0
 
Nov. 11, 2019, 1 a.m. 36.3 ppb (34) 13.1 ppb (12) N/A 23.0 ppb (21) N/A N/A N/A 0.37 ppb (4) N/A 17.0 μg/m3 (61) 61.0
 
Nov. 11, 2019, midnight 33.7 ppb (31) 10.5 ppb (10) N/A 23.0 ppb (21) N/A N/A N/A 0.38 ppb (4) N/A 14.0 μg/m3 (54) 54.0
 
Nov. 10, 2019, 11 p.m. 32.3 ppb (30) 10.2 ppb (9) N/A 22.0 ppb (20) N/A N/A N/A 0.37 ppb (4) N/A 12.0 μg/m3 (50) 50.0
 
Nov. 10, 2019, 10 p.m. 42.4 ppb (39) 14.8 ppb (14) N/A 28.0 ppb (26) N/A N/A N/A 0.4 ppb (4) N/A 14.0 μg/m3 (54) 54.0
 
Nov. 10, 2019, 9 p.m. 38.6 ppb (36) 13.4 ppb (12) N/A 25.0 ppb (23) N/A N/A N/A 0.42 ppb (5) N/A 14.0 μg/m3 (54) 54.0
 
Nov. 10, 2019, 8 p.m. 31.9 ppb (30) 10.1 ppb (9) N/A 22.0 ppb (20) N/A N/A N/A 0.38 ppb (4) N/A 11.0 μg/m3 (46) 46.0
 
Nov. 10, 2019, 7 p.m. 28.0 ppb (26) 8.7 ppb (8) N/A 19.0 ppb (18) N/A N/A N/A 0.35 ppb (4) N/A 7.0 μg/m3 (29) 29.0
 
Nov. 10, 2019, 6 p.m. 28.9 ppb (27) 10.4 ppb (10) N/A 18.0 ppb (17) N/A N/A N/A 0.34 ppb (4) N/A 10.0 μg/m3 (42) 42.0
 
Nov. 10, 2019, 5 p.m. 30.2 ppb (28) 12.8 ppb (12) N/A 17.0 ppb (16) N/A N/A N/A 0.35 ppb (4) N/A 12.0 μg/m3 (50) 50.0
 
Nov. 10, 2019, 4 p.m. 30.2 ppb (28) 14.8 ppb (14) N/A 15.0 ppb (14) N/A N/A N/A 0.36 ppb (4) N/A 9.0 μg/m3 (38) 38.0
 
Nov. 10, 2019, 3 p.m. 34.7 ppb (32) 17.9 ppb (17) N/A 17.0 ppb (16) N/A N/A N/A 0.39 ppb (4) N/A 12.0 μg/m3 (50) 50.0
 
Nov. 10, 2019, 2 p.m. 38.0 ppb (35) 20.2 ppb (19) N/A 18.0 ppb (17) N/A N/A N/A 0.41 ppb (5) N/A 10.0 μg/m3 (42) 42.0
 
Nov. 10, 2019, 1 p.m. 41.3 ppb (38) 23.1 ppb (21) N/A 18.0 ppb (17) N/A N/A N/A 0.4 ppb (4) N/A 14.0 μg/m3 (54) 54.0
 
Nov. 10, 2019, noon 52.1 ppb (48) 31.0 ppb (29) N/A 21.0 ppb (19) N/A N/A N/A 0.42 ppb (5) N/A 13.0 μg/m3 (52) 52.0
 
Nov. 10, 2019, 11 a.m. 53.9 ppb (50) 32.4 ppb (30) N/A 22.0 ppb (20) N/A N/A N/A 0.42 ppb (5) N/A 17.0 μg/m3 (61) 61.0
 
Nov. 10, 2019, 10 a.m. 55.2 ppb (51) 33.2 ppb (31) N/A 22.0 ppb (20) N/A N/A N/A 0.41 ppb (5) N/A 11.0 μg/m3 (46) 51.0
 
Nov. 10, 2019, 9 a.m. 41.9 ppb (39) 21.3 ppb (20) N/A 21.0 ppb (19) N/A N/A N/A 0.38 ppb (4) N/A 13.0 μg/m3 (52) 52.0
 
Nov. 10, 2019, 8 a.m. 48.6 ppb (45) 27.6 ppb (26) N/A 21.0 ppb (19) N/A N/A N/A 0.37 ppb (4) N/A 12.0 μg/m3 (50) 50.0
 
Nov. 10, 2019, 7 a.m. 53.8 ppb (50) 32.4 ppb (30) N/A 21.0 ppb (19) N/A N/A N/A 0.43 ppb (5) N/A 12.0 μg/m3 (50) 50.0
 
Nov. 10, 2019, 6 a.m. 56.5 ppb (53) 32.0 ppb (30) N/A 25.0 ppb (23) N/A N/A N/A 0.44 ppb (5) N/A 15.0 μg/m3 (56) 56.0
 
Nov. 10, 2019, 5 a.m. 49.0 ppb (45) 25.2 ppb (23) N/A 24.0 ppb (22) N/A N/A N/A 0.4 ppb (4) N/A 10.0 μg/m3 (42) 45.0
 
Nov. 10, 2019, 4 a.m. 47.5 ppb (44) 25.2 ppb (23) N/A 22.0 ppb (20) N/A N/A N/A N/A N/A 7.0 μg/m3 (29) 44.0
 
Nov. 10, 2019, 3 a.m. 34.4 ppb (32) 14.9 ppb (14) N/A 19.0 ppb (18) N/A N/A N/A 0.33 ppb (4) N/A 11.0 μg/m3 (46) 46.0
 
Nov. 10, 2019, 2 a.m. 37.6 ppb (35) 17.7 ppb (16) N/A 20.0 ppb (19) N/A N/A N/A 0.29 ppb (3) N/A 10.0 μg/m3 (42) 42.0
 
Nov. 10, 2019, 1 a.m. 27.0 ppb (25) 7.5 ppb (7) N/A 20.0 ppb (19) N/A N/A N/A 0.25 ppb (3) N/A 10.0 μg/m3 (42) 42.0
 
Nov. 10, 2019, midnight 25.4 ppb (24) 7.0 ppb (6) N/A 18.0 ppb (17) N/A N/A N/A 0.24 ppb (3) N/A 2.0 μg/m3 (8) 24.0
 
Nov. 9, 2019, 11 p.m. 32.6 ppb (30) 12.0 ppb (11) N/A 21.0 ppb (19) N/A N/A N/A 0.3 ppb (3) N/A 3.0 μg/m3 (12) 30.0
 
Nov. 9, 2019, 10 p.m. 36.7 ppb (34) 16.7 ppb (15) N/A 20.0 ppb (19) N/A N/A N/A 0.31 ppb (3) N/A 5.0 μg/m3 (21) 34.0
 
Nov. 9, 2019, 9 p.m. 31.7 ppb (29) 14.3 ppb (13) N/A 17.0 ppb (16) N/A N/A N/A 0.27 ppb (3) N/A 3.0 μg/m3 (12) 29.0
 
Nov. 9, 2019, 8 p.m. 26.9 ppb (25) 11.0 ppb (10) N/A 16.0 ppb (15) N/A N/A N/A 0.26 ppb (3) N/A 5.0 μg/m3 (21) 25.0
 
Nov. 9, 2019, 7 p.m. 24.3 ppb (23) 10.4 ppb (10) N/A 14.0 ppb (13) N/A N/A N/A 0.26 ppb (3) N/A 6.0 μg/m3 (25) 25.0
 
Nov. 9, 2019, 6 p.m. 27.2 ppb (25) 13.2 ppb (12) N/A 14.0 ppb (13) N/A N/A N/A 0.26 ppb (3) N/A 3.0 μg/m3 (12) 25.0
 
Nov. 9, 2019, 5 p.m. 26.3 ppb (24) 14.5 ppb (13) N/A 12.0 ppb (11) N/A N/A N/A 0.24 ppb (3) N/A 1.0 μg/m3 (4) 24.0
 
Nov. 9, 2019, 4 p.m. 35.3 ppb (33) 22.1 ppb (20) N/A 13.0 ppb (12) N/A N/A N/A 0.27 ppb (3) N/A 2.0 μg/m3 (8) 33.0
 
Nov. 9, 2019, 3 p.m. 38.6 ppb (36) 25.5 ppb (24) N/A 13.0 ppb (12) N/A N/A N/A 0.3 ppb (3) N/A 3.0 μg/m3 (12) 36.0