AQSQID: 295100094

Site Name: Forest Park

Location: St. Louis (No. 2), MO

Reporting: True, Located: True

Current AQI: 61.0

St. Louis (No. 2) MO, US: 38.631057, -90.281144

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
Nov. 16, 2019, midnight 30.7 ppb (28) 2.9 ppb (3) N/A 28.0 ppb (26) N/A N/A N/A 0.41 ppb (5) N/A 17.1 μg/m3 (61) 61.0
 
Nov. 15, 2019, 11 p.m. 19.6 ppb (18) 1.0 ppb (1) N/A 19.0 ppb (18) N/A N/A N/A 0.27 ppb (3) N/A 7.5 μg/m3 (31) 31.0
 
Nov. 15, 2019, 10 p.m. 12.9 ppb (12) 1.3 ppb (1) N/A 12.0 ppb (11) N/A N/A N/A 0.26 ppb (3) N/A 10.6 μg/m3 (44) 44.0
 
Nov. 15, 2019, 9 p.m. 14.7 ppb (14) 4.8 ppb (4) N/A 10.0 ppb (9) N/A N/A N/A 0.23 ppb (3) N/A 10.2 μg/m3 (42) 42.0
 
Nov. 15, 2019, 8 p.m. 20.4 ppb (19) 8.5 ppb (8) N/A 12.0 ppb (11) N/A N/A N/A 0.21 ppb (2) N/A 6.9 μg/m3 (29) 29.0
 
Nov. 15, 2019, 7 p.m. 20.2 ppb (19) 8.0 ppb (7) N/A 12.0 ppb (11) N/A N/A N/A 0.22 ppb (2) N/A 8.1 μg/m3 (34) 34.0
 
Nov. 15, 2019, 6 p.m. 26.1 ppb (24) 12.6 ppb (12) N/A 14.0 ppb (13) N/A N/A N/A 0.21 ppb (2) N/A 12.9 μg/m3 (52) 52.0
 
Nov. 15, 2019, 5 p.m. 25.6 ppb (24) 12.9 ppb (12) N/A 13.0 ppb (12) N/A N/A N/A 0.26 ppb (3) N/A 11.7 μg/m3 (49) 49.0
 
Nov. 15, 2019, 4 p.m. 44.2 ppb (41) 24.2 ppb (22) N/A 20.0 ppb (19) N/A N/A N/A 0.32 ppb (4) N/A 19.5 μg/m3 (66) 66.0
 
Nov. 15, 2019, 3 p.m. 58.1 ppb (54) 35.7 ppb (33) N/A 23.0 ppb (21) N/A N/A N/A 0.49 ppb (5) N/A 26.0 μg/m3 (80) 80.0
 
Nov. 15, 2019, 2 p.m. 127.1 ppb (105) 96.6 ppb (95) N/A 31.0 ppb (29) N/A N/A N/A 0.93 ppb (10) N/A 22.4 μg/m3 (72) 105.0
 
Nov. 15, 2019, 1 p.m. 280.3 ppb (134) 234.1 ppb (126) N/A 47.0 ppb (44) N/A N/A N/A 1.7 ppb (19) N/A 18.6 μg/m3 (64) 134.0
 
Nov. 15, 2019, noon 191.1 ppb (117) 158.4 ppb (111) N/A 33.0 ppb (31) N/A N/A N/A 1.33 ppb (15) N/A 13.1 μg/m3 (52) 117.0
 
Nov. 15, 2019, 11 a.m. 127.7 ppb (105) 99.0 ppb (98) N/A 29.0 ppb (27) N/A N/A N/A 0.91 ppb (10) N/A 18.1 μg/m3 (63) 105.0
 
Nov. 15, 2019, 10 a.m. 104.2 ppb (101) 75.9 ppb (73) N/A 29.0 ppb (27) N/A N/A N/A 0.78 ppb (9) N/A 13.9 μg/m3 (54) 101.0
 
Nov. 15, 2019, 9 a.m. 95.1 ppb (94) 66.0 ppb (63) N/A 30.0 ppb (28) N/A N/A N/A 0.7 ppb (8) N/A 9.5 μg/m3 (40) 94.0
 
Nov. 15, 2019, 8 a.m. 98.5 ppb (97) 70.8 ppb (68) N/A 28.0 ppb (26) N/A N/A N/A 0.82 ppb (9) N/A 13.1 μg/m3 (52) 97.0
 
Nov. 15, 2019, 7 a.m. 77.7 ppb (75) 50.6 ppb (47) N/A 27.0 ppb (25) N/A N/A N/A 0.71 ppb (8) N/A 16.8 μg/m3 (60) 75.0
 
Nov. 15, 2019, 6 a.m. 114.1 ppb (103) 80.4 ppb (78) N/A 34.0 ppb (31) N/A N/A N/A 0.99 ppb (11) N/A 21.4 μg/m3 (70) 103.0
 
Nov. 15, 2019, 5 a.m. 49.2 ppb (46) 20.8 ppb (19) N/A 29.0 ppb (27) N/A N/A N/A 0.57 ppb (6) N/A 16.4 μg/m3 (59) 59.0
 
Nov. 15, 2019, 4 a.m. 21.4 ppb (20) 1.2 ppb (1) N/A 20.0 ppb (19) N/A N/A N/A 0.31 ppb (3) N/A 10.2 μg/m3 (42) 42.0
 
Nov. 15, 2019, 3 a.m. 27.7 ppb (26) 3.9 ppb (4) N/A 24.0 ppb (22) N/A N/A N/A 0.37 ppb (4) N/A 26.3 μg/m3 (80) 80.0
 
Nov. 15, 2019, 2 a.m. 47.1 ppb (44) 13.6 ppb (13) N/A 34.0 ppb (31) N/A N/A N/A 0.5 ppb (6) N/A 6.4 μg/m3 (27) 44.0
 
Nov. 15, 2019, 1 a.m. 35.0 ppb (32) 4.8 ppb (4) N/A 30.0 ppb (28) N/A N/A N/A 0.42 ppb (5) N/A 0.0 μg/m3 (0) 32.0
 
Nov. 15, 2019, midnight 18.0 ppb (17) 1.1 ppb (1) N/A 17.0 ppb (16) N/A N/A N/A 0.28 ppb (3) N/A 9.5 μg/m3 (40) 40.0
 
Nov. 14, 2019, 11 p.m. 10.0 ppb (9) 1.0 ppb (1) N/A 9.0 ppb (8) N/A N/A N/A 0.26 ppb (3) N/A 13.5 μg/m3 (53) 53.0
 
Nov. 14, 2019, 10 p.m. 8.0 ppb (7) 1.2 ppb (1) N/A 7.0 ppb (6) N/A N/A N/A 0.21 ppb (2) N/A 8.4 μg/m3 (35) 35.0
 
Nov. 14, 2019, 9 p.m. 8.3 ppb (8) 2.0 ppb (2) N/A 6.0 ppb (6) N/A N/A N/A 0.2 ppb (2) N/A 18.4 μg/m3 (64) 64.0
 
Nov. 14, 2019, 8 p.m. 9.7 ppb (9) 4.0 ppb (4) N/A 6.0 ppb (6) N/A N/A N/A 0.2 ppb (2) N/A 12.3 μg/m3 (51) 51.0
 
Nov. 14, 2019, 7 p.m. 14.2 ppb (13) 6.5 ppb (6) N/A 8.0 ppb (7) N/A N/A N/A 0.25 ppb (3) N/A 10.6 μg/m3 (44) 44.0
 
Nov. 14, 2019, 6 p.m. 12.3 ppb (11) 5.8 ppb (5) N/A 7.0 ppb (6) N/A N/A N/A 0.22 ppb (2) N/A 11.8 μg/m3 (49) 49.0
 
Nov. 14, 2019, 5 p.m. 14.8 ppb (14) 7.4 ppb (7) N/A 7.0 ppb (6) N/A N/A N/A 0.22 ppb (2) N/A 9.5 μg/m3 (40) 40.0
 
Nov. 14, 2019, 4 p.m. 18.9 ppb (18) 8.9 ppb (8) N/A 10.0 ppb (9) N/A N/A N/A 0.24 ppb (3) N/A 10.9 μg/m3 (45) 45.0
 
Nov. 14, 2019, 3 p.m. 35.9 ppb (33) 21.2 ppb (20) N/A 15.0 ppb (14) N/A N/A N/A 0.3 ppb (3) N/A 10.4 μg/m3 (43) 43.0
 
Nov. 14, 2019, 2 p.m. 83.8 ppb (82) 63.3 ppb (60) N/A 21.0 ppb (19) N/A N/A N/A 0.41 ppb (5) N/A 9.9 μg/m3 (41) 82.0
 
Nov. 14, 2019, 1 p.m. 115.2 ppb (103) 85.5 ppb (84) N/A 30.0 ppb (28) N/A N/A N/A 0.36 ppb (4) N/A 9.4 μg/m3 (39) 103.0
 
Nov. 14, 2019, noon 34.7 ppb (32) 13.6 ppb (13) N/A 21.0 ppb (19) N/A N/A N/A 0.42 ppb (5) N/A 2.6 μg/m3 (11) 32.0
 
Nov. 14, 2019, 11 a.m. 56.7 ppb (53) 28.5 ppb (26) N/A 28.0 ppb (26) N/A N/A N/A 0.37 ppb (4) N/A 0.1 μg/m3 (0) 53.0
 
Nov. 14, 2019, 10 a.m. 87.5 ppb (86) 51.3 ppb (48) N/A 36.0 ppb (33) N/A N/A N/A N/A N/A 10.7 μg/m3 (45) 86.0
 
Nov. 14, 2019, 9 a.m. 30.8 ppb (29) 6.2 ppb (6) N/A 25.0 ppb (23) N/A N/A N/A 0.23 ppb (3) N/A 4.7 μg/m3 (20) 29.0
 
Nov. 14, 2019, 8 a.m. 19.4 ppb (18) 2.1 ppb (2) N/A 17.0 ppb (16) N/A N/A N/A 0.21 ppb (2) N/A 3.7 μg/m3 (15) 18.0
 
Nov. 14, 2019, 7 a.m. 19.3 ppb (18) 2.6 ppb (2) N/A 17.0 ppb (16) N/A N/A N/A 0.26 ppb (3) N/A 5.0 μg/m3 (21) 21.0
 
Nov. 14, 2019, 6 a.m. 22.9 ppb (21) 5.7 ppb (5) N/A 17.0 ppb (16) N/A N/A N/A 0.24 ppb (3) N/A 7.7 μg/m3 (32) 32.0
 
Nov. 14, 2019, 5 a.m. 21.6 ppb (20) 5.3 ppb (5) N/A 16.0 ppb (15) N/A N/A N/A 0.26 ppb (3) N/A 7.2 μg/m3 (30) 30.0
 
Nov. 14, 2019, 4 a.m. 21.3 ppb (20) 6.0 ppb (6) N/A 15.0 ppb (14) N/A N/A N/A 0.29 ppb (3) N/A 0.1 μg/m3 (0) 20.0
 
Nov. 14, 2019, 3 a.m. 24.6 ppb (23) 7.5 ppb (7) N/A 17.0 ppb (16) N/A N/A N/A 0.31 ppb (3) N/A 7.0 μg/m3 (29) 29.0
 
Nov. 14, 2019, 2 a.m. 33.9 ppb (31) 10.8 ppb (10) N/A 23.0 ppb (21) N/A N/A N/A 0.35 ppb (4) N/A 3.2 μg/m3 (13) 31.0
 
Nov. 14, 2019, 1 a.m. 31.2 ppb (29) 9.7 ppb (9) N/A 22.0 ppb (20) N/A N/A N/A 0.39 ppb (4) N/A 10.5 μg/m3 (44) 44.0
 
Nov. 14, 2019, midnight 29.8 ppb (28) 10.1 ppb (9) N/A 20.0 ppb (19) N/A N/A N/A 0.39 ppb (4) N/A 6.9 μg/m3 (29) 29.0
 
Nov. 13, 2019, 11 p.m. 28.9 ppb (27) 8.5 ppb (8) N/A 21.0 ppb (19) N/A N/A N/A 0.35 ppb (4) N/A 7.5 μg/m3 (31) 31.0
 
Nov. 13, 2019, 10 p.m. 34.1 ppb (32) 12.6 ppb (12) N/A 22.0 ppb (20) N/A N/A N/A 0.39 ppb (4) N/A 0.0 μg/m3 (0) 32.0
 
Nov. 13, 2019, 9 p.m. 27.7 ppb (26) 12.0 ppb (11) N/A 16.0 ppb (15) N/A N/A N/A 0.35 ppb (4) N/A 0.0 μg/m3 (0) 26.0
 
Nov. 13, 2019, 8 p.m. 24.8 ppb (23) 12.7 ppb (12) N/A 12.0 ppb (11) N/A N/A N/A 0.3 ppb (3) N/A N/A 23.0
 
Nov. 13, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A N/A 0.3 ppb (3) N/A 10.8 μg/m3 (45) 45.0
 
Nov. 13, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A N/A 0.33 ppb (4) N/A 9.9 μg/m3 (41) 41.0
 
Nov. 13, 2019, 5 p.m. 29.3 ppb (27) 17.7 ppb (16) N/A 12.0 ppb (11) N/A N/A N/A N/A N/A 10.9 μg/m3 (45) 45.0
 
Nov. 13, 2019, 4 p.m. 24.5 ppb (23) 14.7 ppb (14) N/A 10.0 ppb (9) N/A N/A N/A 0.25 ppb (3) N/A 7.5 μg/m3 (31) 31.0
 
Nov. 13, 2019, 3 p.m. 25.5 ppb (24) 15.8 ppb (15) N/A 10.0 ppb (9) N/A N/A N/A 0.27 ppb (3) N/A 9.3 μg/m3 (39) 39.0
 
Nov. 13, 2019, 2 p.m. 26.5 ppb (25) 15.4 ppb (14) N/A 11.0 ppb (10) N/A N/A N/A 0.3 ppb (3) N/A 16.6 μg/m3 (60) 60.0
 
Nov. 13, 2019, 1 p.m. 34.6 ppb (32) 16.3 ppb (15) N/A 18.0 ppb (17) N/A N/A N/A 0.36 ppb (4) N/A 9.6 μg/m3 (40) 40.0
 
Nov. 13, 2019, noon 34.9 ppb (32) 15.1 ppb (14) N/A 20.0 ppb (19) N/A N/A N/A 0.36 ppb (4) N/A 8.9 μg/m3 (37) 37.0
 
Nov. 13, 2019, 11 a.m. 24.5 ppb (23) 8.5 ppb (8) N/A 16.0 ppb (15) N/A N/A N/A 0.25 ppb (3) N/A 8.7 μg/m3 (36) 36.0
 
Nov. 13, 2019, 10 a.m. 16.8 ppb (16) 3.4 ppb (3) N/A 13.0 ppb (12) N/A N/A N/A 0.19 ppb (2) N/A 6.8 μg/m3 (28) 28.0
 
Nov. 13, 2019, 9 a.m. 19.1 ppb (18) 3.3 ppb (3) N/A 16.0 ppb (15) N/A N/A N/A 0.18 ppb (2) N/A 9.1 μg/m3 (38) 38.0
 
Nov. 13, 2019, 8 a.m. 15.3 ppb (14) 1.8 ppb (2) N/A 14.0 ppb (13) N/A N/A N/A 0.17 ppb (2) N/A 10.6 μg/m3 (44) 44.0
 
Nov. 13, 2019, 7 a.m. 11.3 ppb (10) 1.8 ppb (2) N/A 10.0 ppb (9) N/A N/A N/A 0.18 ppb (2) N/A 7.2 μg/m3 (30) 30.0
 
Nov. 13, 2019, 6 a.m. 12.4 ppb (11) 2.6 ppb (2) N/A 10.0 ppb (9) N/A N/A N/A 0.18 ppb (2) N/A 1.4 μg/m3 (6) 11.0
 
Nov. 13, 2019, 5 a.m. 16.7 ppb (15) 3.8 ppb (4) N/A 13.0 ppb (12) N/A N/A N/A 0.21 ppb (2) N/A 8.9 μg/m3 (37) 37.0
 
Nov. 13, 2019, 4 a.m. 21.8 ppb (20) 7.3 ppb (7) N/A 15.0 ppb (14) N/A N/A N/A 0.3 ppb (3) N/A 11.8 μg/m3 (49) 49.0
 
Nov. 13, 2019, 3 a.m. 27.2 ppb (25) 10.3 ppb (10) N/A 17.0 ppb (16) N/A N/A N/A 0.3 ppb (3) N/A 6.2 μg/m3 (26) 26.0
 
Nov. 13, 2019, 2 a.m. 36.9 ppb (34) 12.0 ppb (11) N/A 25.0 ppb (23) N/A N/A N/A 0.33 ppb (4) N/A 3.6 μg/m3 (15) 34.0
 
Nov. 13, 2019, 1 a.m. 25.7 ppb (24) 6.7 ppb (6) N/A 19.0 ppb (18) N/A N/A N/A 0.29 ppb (3) N/A 2.9 μg/m3 (12) 24.0
 
Nov. 13, 2019, midnight 11.9 ppb (11) 0.7 ppb (1) N/A 11.0 ppb (10) N/A N/A N/A 0.2 ppb (2) N/A 6.9 μg/m3 (29) 29.0
 
Nov. 12, 2019, 11 p.m. 9.9 ppb (9) 0.5 ppb (0) N/A 9.0 ppb (8) N/A N/A N/A 0.19 ppb (2) N/A 5.4 μg/m3 (23) 23.0
 
Nov. 12, 2019, 10 p.m. 8.7 ppb (8) 1.3 ppb (1) N/A 7.0 ppb (6) N/A N/A N/A 0.18 ppb (2) N/A 2.2 μg/m3 (9) 9.0
 
Nov. 12, 2019, 9 p.m. 8.0 ppb (7) 2.7 ppb (3) N/A 5.0 ppb (5) N/A N/A N/A 0.2 ppb (2) N/A 3.0 μg/m3 (12) 12.0
 
Nov. 12, 2019, 8 p.m. 16.0 ppb (15) 8.4 ppb (8) N/A 8.0 ppb (7) N/A N/A N/A 0.19 ppb (2) N/A 6.6 μg/m3 (28) 28.0
 
Nov. 12, 2019, 7 p.m. 18.8 ppb (17) 11.6 ppb (11) N/A 7.0 ppb (6) N/A N/A N/A 0.17 ppb (2) N/A 1.3 μg/m3 (5) 17.0
 
Nov. 12, 2019, 6 p.m. 15.8 ppb (15) 8.8 ppb (8) N/A 7.0 ppb (6) N/A N/A N/A 0.16 ppb (2) N/A 8.8 μg/m3 (37) 37.0
 
Nov. 12, 2019, 5 p.m. 24.2 ppb (22) 17.1 ppb (16) N/A 7.0 ppb (6) N/A N/A N/A 0.16 ppb (2) N/A 11.8 μg/m3 (49) 49.0
 
Nov. 12, 2019, 4 p.m. 43.9 ppb (41) 36.1 ppb (33) N/A 9.0 ppb (8) N/A N/A N/A 0.19 ppb (2) N/A -2.4 μg/m3 (0) 41.0
 
Nov. 12, 2019, 3 p.m. 42.4 ppb (39) 28.7 ppb (27) N/A 14.0 ppb (13) N/A N/A N/A 0.2 ppb (2) N/A -4.5 μg/m3 (0) 39.0
 
Nov. 12, 2019, 2 p.m. 88.3 ppb (86) 55.7 ppb (52) N/A 33.0 ppb (31) N/A N/A N/A 0.28 ppb (3) N/A 0.7 μg/m3 (3) 86.0
 
Nov. 12, 2019, 1 p.m. 37.9 ppb (35) 22.6 ppb (21) N/A 15.0 ppb (14) N/A N/A N/A 0.29 ppb (3) N/A -0.2 μg/m3 (0) 35.0
 
Nov. 12, 2019, noon 7.1 ppb (7) 1.9 ppb (2) N/A 5.0 ppb (5) N/A N/A N/A 0.18 ppb (2) N/A -1.6 μg/m3 (0) 7.0
 
Nov. 12, 2019, 11 a.m. 4.8 ppb (4) 0.8 ppb (1) N/A 4.0 ppb (4) N/A N/A N/A 0.15 ppb (2) N/A 2.7 μg/m3 (11) 11.0
 
Nov. 12, 2019, 10 a.m. 3.9 ppb (4) 0.9 ppb (1) N/A 3.0 ppb (3) N/A N/A N/A N/A N/A 6.7 μg/m3 (28) 28.0
 
Nov. 12, 2019, 9 a.m. 3.4 ppb (3) 0.8 ppb (1) N/A 3.0 ppb (3) N/A N/A N/A 0.14 ppb (2) N/A 11.8 μg/m3 (49) 49.0
 
Nov. 12, 2019, 8 a.m. 3.2 ppb (3) 0.7 ppb (1) N/A 3.0 ppb (3) N/A N/A N/A 0.13 ppb (1) N/A -1.4 μg/m3 (0) 3.0
 
Nov. 12, 2019, 7 a.m. 3.2 ppb (3) 0.7 ppb (1) N/A 3.0 ppb (3) N/A N/A N/A 0.13 ppb (1) N/A N/A 3.0
 
Nov. 12, 2019, 6 a.m. 3.2 ppb (3) 0.6 ppb (1) N/A 3.0 ppb (3) N/A N/A N/A 0.13 ppb (1) N/A 2.3 μg/m3 (10) 10.0
 
Nov. 12, 2019, 5 a.m. 3.6 ppb (3) 0.7 ppb (1) N/A 3.0 ppb (3) N/A N/A N/A 0.14 ppb (2) N/A 7.7 μg/m3 (32) 32.0
 
Nov. 12, 2019, 4 a.m. 3.0 ppb (3) 0.7 ppb (1) N/A 2.0 ppb (2) N/A N/A N/A 0.13 ppb (1) N/A -3.6 μg/m3 (0) 3.0
 
Nov. 12, 2019, 3 a.m. 3.5 ppb (3) 0.7 ppb (1) N/A 3.0 ppb (3) N/A N/A N/A 0.13 ppb (1) N/A 4.4 μg/m3 (18) 18.0
 
Nov. 12, 2019, 2 a.m. 2.8 ppb (3) 0.7 ppb (1) N/A 2.0 ppb (2) N/A N/A N/A 0.13 ppb (1) N/A 9.8 μg/m3 (41) 41.0
 
Nov. 12, 2019, 1 a.m. 3.4 ppb (3) 0.6 ppb (1) N/A 3.0 ppb (3) N/A N/A N/A 0.14 ppb (2) N/A 2.7 μg/m3 (11) 11.0
 
Nov. 12, 2019, midnight 3.9 ppb (4) 0.7 ppb (1) N/A 3.0 ppb (3) N/A N/A N/A 0.15 ppb (2) N/A 3.3 μg/m3 (14) 14.0
 
Nov. 11, 2019, 11 p.m. 4.0 ppb (4) 0.9 ppb (1) N/A 3.0 ppb (3) N/A N/A N/A 0.15 ppb (2) N/A 1.1 μg/m3 (5) 5.0
 
Nov. 11, 2019, 10 p.m. 3.4 ppb (3) 0.7 ppb (1) N/A 3.0 ppb (3) N/A N/A N/A 0.14 ppb (2) N/A 2.3 μg/m3 (10) 10.0
 
Nov. 11, 2019, 9 p.m. 3.9 ppb (4) 1.0 ppb (1) N/A 3.0 ppb (3) N/A N/A N/A 0.15 ppb (2) N/A -0.1 μg/m3 (0) 4.0
 
Nov. 11, 2019, 8 p.m. 3.3 ppb (3) 1.3 ppb (1) N/A 2.0 ppb (2) N/A N/A N/A 0.14 ppb (2) N/A 1.7 μg/m3 (7) 7.0
 
Nov. 11, 2019, 7 p.m. 3.5 ppb (3) 1.3 ppb (1) N/A 2.0 ppb (2) N/A N/A N/A 0.14 ppb (2) N/A 2.9 μg/m3 (12) 12.0
 
Nov. 11, 2019, 6 p.m. 3.0 ppb (3) 1.2 ppb (1) N/A 2.0 ppb (2) N/A N/A N/A 0.15 ppb (2) N/A 4.4 μg/m3 (18) 18.0
 
Nov. 11, 2019, 5 p.m. 4.7 ppb (4) 1.9 ppb (2) N/A 3.0 ppb (3) N/A N/A N/A 0.15 ppb (2) N/A N/A 4.0
 
Nov. 11, 2019, 4 p.m. 4.8 ppb (4) 1.6 ppb (1) N/A 3.0 ppb (3) N/A N/A N/A 0.16 ppb (2) N/A 0.8 μg/m3 (3) 4.0
 
Nov. 11, 2019, 3 p.m. 4.3 ppb (4) 1.2 ppb (1) N/A 3.0 ppb (3) N/A N/A N/A 0.16 ppb (2) N/A 0.2 μg/m3 (1) 4.0
 
Nov. 11, 2019, 2 p.m. 18.1 ppb (17) 10.8 ppb (10) N/A 7.0 ppb (6) N/A N/A N/A 0.17 ppb (2) N/A 13.8 μg/m3 (54) 54.0
 
Nov. 11, 2019, 1 p.m. 12.5 ppb (12) 5.1 ppb (5) N/A 7.0 ppb (6) N/A N/A N/A 0.18 ppb (2) N/A 15.7 μg/m3 (58) 58.0
 
Nov. 11, 2019, noon 7.8 ppb (7) 0.9 ppb (1) N/A 7.0 ppb (6) N/A N/A N/A 0.19 ppb (2) N/A 17.1 μg/m3 (61) 61.0
 
Nov. 11, 2019, 11 a.m. 6.1 ppb (6) 0.8 ppb (1) N/A 5.0 ppb (5) N/A N/A N/A 0.18 ppb (2) N/A 16.2 μg/m3 (59) 59.0
 
Nov. 11, 2019, 10 a.m. 6.8 ppb (6) 0.8 ppb (1) N/A 6.0 ppb (6) N/A N/A N/A 0.19 ppb (2) N/A 18.3 μg/m3 (63) 63.0
 
Nov. 11, 2019, 9 a.m. 6.8 ppb (6) 0.8 ppb (1) N/A 6.0 ppb (6) N/A N/A N/A 0.2 ppb (2) N/A 18.6 μg/m3 (64) 64.0
 
Nov. 11, 2019, 8 a.m. 8.0 ppb (7) 0.8 ppb (1) N/A 7.0 ppb (6) N/A N/A N/A 0.21 ppb (2) N/A 22.8 μg/m3 (73) 73.0
 
Nov. 11, 2019, 7 a.m. 8.1 ppb (8) 0.6 ppb (1) N/A 8.0 ppb (7) N/A N/A N/A 0.2 ppb (2) N/A 22.2 μg/m3 (72) 72.0
 
Nov. 11, 2019, 6 a.m. 8.5 ppb (8) 0.7 ppb (1) N/A 8.0 ppb (7) N/A N/A N/A 0.21 ppb (2) N/A 17.6 μg/m3 (62) 62.0
 
Nov. 11, 2019, 5 a.m. 9.9 ppb (9) 1.0 ppb (1) N/A 9.0 ppb (8) N/A N/A N/A 0.21 ppb (2) N/A 17.2 μg/m3 (61) 61.0
 
Nov. 11, 2019, 4 a.m. 8.2 ppb (8) 0.8 ppb (1) N/A 7.0 ppb (6) N/A N/A N/A 0.2 ppb (2) N/A 18.5 μg/m3 (64) 64.0
 
Nov. 11, 2019, 3 a.m. 8.5 ppb (8) 0.5 ppb (0) N/A 8.0 ppb (7) N/A N/A N/A 0.19 ppb (2) N/A 20.6 μg/m3 (68) 68.0
 
Nov. 11, 2019, 2 a.m. 11.2 ppb (10) 1.3 ppb (1) N/A 10.0 ppb (9) N/A N/A N/A 0.24 ppb (3) N/A 20.9 μg/m3 (69) 69.0
 
Nov. 11, 2019, 1 a.m. 10.2 ppb (9) 0.9 ppb (1) N/A 9.0 ppb (8) N/A N/A N/A 0.28 ppb (3) N/A 17.8 μg/m3 (62) 62.0
 
Nov. 11, 2019, midnight 10.8 ppb (10) 0.7 ppb (1) N/A 10.0 ppb (9) N/A N/A N/A 0.28 ppb (3) N/A 13.1 μg/m3 (52) 52.0
 
Nov. 10, 2019, 11 p.m. 9.6 ppb (9) 0.8 ppb (1) N/A 9.0 ppb (8) N/A N/A N/A 0.28 ppb (3) N/A 11.7 μg/m3 (49) 49.0
 
Nov. 10, 2019, 10 p.m. 7.7 ppb (7) 0.8 ppb (1) N/A 7.0 ppb (6) N/A N/A N/A 0.25 ppb (3) N/A 1.8 μg/m3 (8) 8.0
 
Nov. 10, 2019, 9 p.m. 5.5 ppb (5) 0.7 ppb (1) N/A 5.0 ppb (5) N/A N/A N/A 0.23 ppb (3) N/A 8.8 μg/m3 (37) 37.0
 
Nov. 10, 2019, 8 p.m. 5.1 ppb (5) 1.1 ppb (1) N/A 4.0 ppb (4) N/A N/A N/A 0.22 ppb (2) N/A 11.0 μg/m3 (46) 46.0
 
Nov. 10, 2019, 7 p.m. 7.6 ppb (7) 2.1 ppb (2) N/A 6.0 ppb (6) N/A N/A N/A 0.26 ppb (3) N/A 8.9 μg/m3 (37) 37.0
 
Nov. 10, 2019, 6 p.m. 10.0 ppb (9) 3.4 ppb (3) N/A 7.0 ppb (6) N/A N/A N/A 0.3 ppb (3) N/A 9.9 μg/m3 (41) 41.0
 
Nov. 10, 2019, 5 p.m. 8.2 ppb (8) 3.1 ppb (3) N/A 5.0 ppb (5) N/A N/A N/A 0.28 ppb (3) N/A 11.5 μg/m3 (48) 48.0
 
Nov. 10, 2019, 4 p.m. 6.0 ppb (6) 2.1 ppb (2) N/A 4.0 ppb (4) N/A N/A N/A 0.23 ppb (3) N/A 8.3 μg/m3 (35) 35.0
 
Nov. 10, 2019, 3 p.m. 13.9 ppb (13) 6.1 ppb (6) N/A 8.0 ppb (7) N/A N/A N/A 0.3 ppb (3) N/A 14.7 μg/m3 (56) 56.0
 
Nov. 10, 2019, 2 p.m. 21.9 ppb (20) 10.3 ppb (10) N/A 12.0 ppb (11) N/A N/A N/A 0.32 ppb (4) N/A 11.6 μg/m3 (48) 48.0
 
Nov. 10, 2019, 1 p.m. 33.0 ppb (31) 13.8 ppb (13) N/A 19.0 ppb (18) N/A N/A N/A 0.43 ppb (5) N/A 10.3 μg/m3 (43) 43.0
 
Nov. 10, 2019, noon 29.0 ppb (27) 7.5 ppb (7) N/A 21.0 ppb (19) N/A N/A N/A 0.35 ppb (4) N/A 9.7 μg/m3 (40) 40.0
 
Nov. 10, 2019, 11 a.m. 26.2 ppb (24) 5.1 ppb (5) N/A 21.0 ppb (19) N/A N/A N/A 0.32 ppb (4) N/A 11.8 μg/m3 (49) 49.0
 
Nov. 10, 2019, 10 a.m. 26.4 ppb (24) 4.3 ppb (4) N/A 22.0 ppb (20) N/A N/A N/A N/A N/A 10.6 μg/m3 (44) 44.0
 
Nov. 10, 2019, 9 a.m. 21.2 ppb (20) 3.2 ppb (3) N/A 18.0 ppb (17) N/A N/A N/A 0.33 ppb (4) N/A 10.0 μg/m3 (42) 42.0
 
Nov. 10, 2019, 8 a.m. 22.4 ppb (21) 4.6 ppb (4) N/A 18.0 ppb (17) N/A N/A N/A 0.41 ppb (5) N/A 9.9 μg/m3 (41) 41.0
 
Nov. 10, 2019, 7 a.m. 20.0 ppb (19) 4.3 ppb (4) N/A 16.0 ppb (15) N/A N/A N/A 0.4 ppb (4) N/A 17.4 μg/m3 (61) 61.0
 
Nov. 10, 2019, 6 a.m. 23.3 ppb (22) 5.2 ppb (5) N/A 18.0 ppb (17) N/A N/A N/A 0.44 ppb (5) N/A 12.2 μg/m3 (50) 50.0
 
Nov. 10, 2019, 5 a.m. 24.3 ppb (23) 5.4 ppb (5) N/A 19.0 ppb (18) N/A N/A N/A 0.47 ppb (5) N/A 13.7 μg/m3 (54) 54.0
 
Nov. 10, 2019, 4 a.m. 23.2 ppb (21) 5.4 ppb (5) N/A 18.0 ppb (17) N/A N/A N/A 0.43 ppb (5) N/A 18.6 μg/m3 (64) 64.0
 
Nov. 10, 2019, 3 a.m. 27.4 ppb (25) 5.6 ppb (5) N/A 22.0 ppb (20) N/A N/A N/A 0.45 ppb (5) N/A 15.2 μg/m3 (57) 57.0
 
Nov. 10, 2019, 2 a.m. 35.3 ppb (33) 9.0 ppb (8) N/A 26.0 ppb (24) N/A N/A N/A 0.5 ppb (6) N/A 19.0 μg/m3 (65) 65.0
 
Nov. 10, 2019, 1 a.m. 31.2 ppb (29) 6.3 ppb (6) N/A 25.0 ppb (23) N/A N/A N/A 0.46 ppb (5) N/A 11.7 μg/m3 (49) 49.0
 
Nov. 10, 2019, midnight 34.4 ppb (32) 9.3 ppb (9) N/A 25.0 ppb (23) N/A N/A N/A 0.51 ppb (6) N/A 13.8 μg/m3 (54) 54.0
 
Nov. 9, 2019, 11 p.m. 38.6 ppb (36) 10.3 ppb (10) N/A 28.0 ppb (26) N/A N/A N/A 0.56 ppb (6) N/A 14.6 μg/m3 (56) 56.0
 
Nov. 9, 2019, 10 p.m. 24.1 ppb (22) 5.6 ppb (5) N/A 18.0 ppb (17) N/A N/A N/A 0.42 ppb (5) N/A 15.5 μg/m3 (57) 57.0
 
Nov. 9, 2019, 9 p.m. 12.3 ppb (11) 4.2 ppb (4) N/A 8.0 ppb (7) N/A N/A N/A 0.28 ppb (3) N/A 10.7 μg/m3 (45) 45.0
 
Nov. 9, 2019, 8 p.m. 9.7 ppb (9) 4.5 ppb (4) N/A 5.0 ppb (5) N/A N/A N/A 0.26 ppb (3) N/A 7.9 μg/m3 (33) 33.0
 
Nov. 9, 2019, 7 p.m. 9.5 ppb (9) 4.1 ppb (4) N/A 5.0 ppb (5) N/A N/A N/A 0.25 ppb (3) N/A 9.1 μg/m3 (38) 38.0
 
Nov. 9, 2019, 6 p.m. 8.6 ppb (8) 4.0 ppb (4) N/A 5.0 ppb (5) N/A N/A N/A 0.26 ppb (3) N/A 8.4 μg/m3 (35) 35.0
 
Nov. 9, 2019, 5 p.m. 14.3 ppb (13) 7.1 ppb (7) N/A 7.0 ppb (6) N/A N/A N/A 0.26 ppb (3) N/A 13.1 μg/m3 (52) 52.0
 
Nov. 9, 2019, 4 p.m. 12.1 ppb (11) 6.2 ppb (6) N/A 6.0 ppb (6) N/A N/A N/A 0.26 ppb (3) N/A 4.1 μg/m3 (17) 17.0
 
Nov. 9, 2019, 3 p.m. 13.0 ppb (12) 6.9 ppb (6) N/A 6.0 ppb (6) N/A N/A N/A 0.24 ppb (3) N/A 6.3 μg/m3 (26) 26.0
 
Nov. 9, 2019, 2 p.m. 16.7 ppb (15) 8.7 ppb (8) N/A 8.0 ppb (7) N/A N/A N/A 0.26 ppb (3) N/A 7.0 μg/m3 (29) 29.0
 
Nov. 9, 2019, 1 p.m. 20.0 ppb (19) 8.6 ppb (8) N/A 12.0 ppb (11) N/A N/A N/A 0.25 ppb (3) N/A 4.1 μg/m3 (17) 19.0
 
Nov. 9, 2019, noon 17.7 ppb (16) 5.1 ppb (5) N/A 13.0 ppb (12) N/A N/A N/A 0.24 ppb (3) N/A 7.3 μg/m3 (30) 30.0
 
Nov. 9, 2019, 11 a.m. 13.5 ppb (12) 3.1 ppb (3) N/A 10.0 ppb (9) N/A N/A N/A 0.2 ppb (2) N/A 5.3 μg/m3 (22) 22.0
 
Nov. 9, 2019, 10 a.m. 8.9 ppb (8) 1.9 ppb (2) N/A 7.0 ppb (6) N/A N/A N/A 0.17 ppb (2) N/A 9.6 μg/m3 (40) 40.0
 
Nov. 9, 2019, 9 a.m. 9.8 ppb (9) 2.1 ppb (2) N/A 8.0 ppb (7) N/A N/A N/A 0.18 ppb (2) N/A 5.5 μg/m3 (23) 23.0
 
Nov. 9, 2019, 8 a.m. 11.0 ppb (10) 2.0 ppb (2) N/A 9.0 ppb (8) N/A N/A N/A 0.2 ppb (2) N/A 12.4 μg/m3 (51) 51.0
 
Nov. 9, 2019, 7 a.m. 12.3 ppb (11) 2.4 ppb (2) N/A 10.0 ppb (9) N/A N/A N/A 0.21 ppb (2) N/A 4.1 μg/m3 (17) 17.0
 
Nov. 9, 2019, 6 a.m. 17.5 ppb (16) 3.8 ppb (4) N/A 14.0 ppb (13) N/A N/A N/A 0.25 ppb (3) N/A 11.4 μg/m3 (48) 48.0
 
Nov. 9, 2019, 5 a.m. 18.7 ppb (17) 4.3 ppb (4) N/A 14.0 ppb (13) N/A N/A N/A 0.27 ppb (3) N/A 5.8 μg/m3 (24) 24.0
 
Nov. 9, 2019, 4 a.m. 20.9 ppb (19) 6.8 ppb (6) N/A 14.0 ppb (13) N/A N/A N/A 0.33 ppb (4) N/A 12.8 μg/m3 (52) 52.0
 
Nov. 9, 2019, 3 a.m. 24.2 ppb (22) 7.4 ppb (7) N/A 17.0 ppb (16) N/A N/A N/A 0.34 ppb (4) N/A 10.8 μg/m3 (45) 45.0
 
Nov. 9, 2019, 2 a.m. 27.2 ppb (25) 7.9 ppb (7) N/A 19.0 ppb (18) N/A N/A N/A 0.35 ppb (4) N/A 8.9 μg/m3 (37) 37.0
 
Nov. 9, 2019, 1 a.m. 35.8 ppb (33) 11.8 ppb (11) N/A 24.0 ppb (22) N/A N/A N/A 0.43 ppb (5) N/A 11.5 μg/m3 (48) 48.0