AQSQID: 290950042

Site Name: Blue Ridge I-70

Location: Kansas City (Harvard Lane), MO

Reporting: True, Located: True

Current AQI: 50.0

Kansas City (Harvard Lane) MO, US: 39.047911, -94.450513

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
March 19, 2019, 9 p.m. 20.0 ppb (19) 11.1 ppb (10) N/A 9.0 ppb (8) N/A N/A N/A 0.32 ppb (4) N/A 11.9 μg/m3 (50) 50.0
 
March 19, 2019, 8 p.m. 24.2 ppb (22) 12.4 ppb (11) N/A 12.0 ppb (11) N/A N/A N/A 0.34 ppb (4) N/A 16.6 μg/m3 (60) 60.0
 
March 19, 2019, 7 p.m. 25.6 ppb (24) 13.4 ppb (12) N/A 12.0 ppb (11) N/A N/A N/A 0.33 ppb (4) N/A 8.8 μg/m3 (37) 37.0
 
March 19, 2019, 6 p.m. 21.4 ppb (20) 10.5 ppb (10) N/A 11.0 ppb (10) N/A N/A N/A 0.33 ppb (4) N/A 14.1 μg/m3 (54) 54.0
 
March 19, 2019, 5 p.m. 20.6 ppb (19) 10.2 ppb (9) N/A 10.0 ppb (9) N/A N/A N/A 0.34 ppb (4) N/A 9.0 μg/m3 (38) 38.0
 
March 19, 2019, 4 p.m. 21.9 ppb (20) 10.2 ppb (9) N/A 12.0 ppb (11) N/A N/A N/A 0.32 ppb (4) N/A 11.5 μg/m3 (48) 48.0
 
March 19, 2019, 3 p.m. 32.6 ppb (30) 15.7 ppb (15) N/A 17.0 ppb (16) N/A N/A N/A 0.34 ppb (4) N/A 1.1 μg/m3 (5) 30.0
 
March 19, 2019, 2 p.m. 35.7 ppb (33) 14.3 ppb (13) N/A 21.0 ppb (19) N/A N/A N/A 0.41 ppb (5) N/A 14.6 μg/m3 (56) 56.0
 
March 19, 2019, 1 p.m. 31.6 ppb (29) 9.1 ppb (8) N/A 23.0 ppb (21) N/A N/A N/A 0.37 ppb (4) N/A 7.5 μg/m3 (31) 31.0
 
March 19, 2019, noon 35.2 ppb (33) 12.5 ppb (12) N/A 23.0 ppb (21) N/A N/A N/A 0.45 ppb (5) N/A 8.8 μg/m3 (37) 37.0
 
March 19, 2019, 11 a.m. 30.6 ppb (28) 13.1 ppb (12) N/A 18.0 ppb (17) N/A N/A N/A 0.35 ppb (4) N/A 9.9 μg/m3 (41) 41.0
 
March 19, 2019, 10 a.m. 21.3 ppb (20) 8.8 ppb (8) N/A 13.0 ppb (12) N/A N/A N/A N/A N/A 7.3 μg/m3 (30) 30.0
 
March 19, 2019, 9 a.m. 19.8 ppb (18) 5.5 ppb (5) N/A 14.0 ppb (13) N/A N/A N/A 0.29 ppb (3) N/A 6.2 μg/m3 (26) 26.0
 
March 19, 2019, 8 a.m. 11.6 ppb (11) 2.0 ppb (2) N/A 10.0 ppb (9) N/A N/A N/A 0.21 ppb (2) N/A 5.2 μg/m3 (22) 22.0
 
March 19, 2019, 7 a.m. 10.7 ppb (10) 2.6 ppb (2) N/A 8.0 ppb (7) N/A N/A N/A 0.2 ppb (2) N/A 8.5 μg/m3 (35) 35.0
 
March 19, 2019, 6 a.m. 13.6 ppb (13) 2.4 ppb (2) N/A 11.0 ppb (10) N/A N/A N/A 0.22 ppb (2) N/A 5.1 μg/m3 (21) 21.0
 
March 19, 2019, 5 a.m. 15.1 ppb (14) 3.2 ppb (3) N/A 12.0 ppb (11) N/A N/A N/A 0.24 ppb (3) N/A 5.0 μg/m3 (21) 21.0
 
March 19, 2019, 4 a.m. 25.3 ppb (23) 5.9 ppb (5) N/A 19.0 ppb (18) N/A N/A N/A 0.36 ppb (4) N/A 7.1 μg/m3 (30) 30.0
 
March 19, 2019, 3 a.m. 33.6 ppb (31) 5.6 ppb (5) N/A 28.0 ppb (26) N/A N/A N/A 0.4 ppb (4) N/A 10.2 μg/m3 (42) 42.0
 
March 19, 2019, 2 a.m. 27.3 ppb (25) 3.5 ppb (3) N/A 24.0 ppb (22) N/A N/A N/A 0.38 ppb (4) N/A 4.5 μg/m3 (19) 25.0
 
March 19, 2019, 1 a.m. 13.6 ppb (13) 1.1 ppb (1) N/A 13.0 ppb (12) N/A N/A N/A 0.3 ppb (3) N/A 4.7 μg/m3 (20) 20.0
 
March 19, 2019, midnight 9.1 ppb (8) 1.1 ppb (1) N/A 8.0 ppb (7) N/A N/A N/A 0.27 ppb (3) N/A 8.8 μg/m3 (37) 37.0
 
March 18, 2019, 11 p.m. 4.5 ppb (4) 1.0 ppb (1) N/A 4.0 ppb (4) N/A N/A N/A 0.19 ppb (2) N/A 6.2 μg/m3 (26) 26.0
 
March 18, 2019, 10 p.m. 6.1 ppb (6) 1.8 ppb (2) N/A 4.0 ppb (4) N/A N/A N/A 0.19 ppb (2) N/A 11.0 μg/m3 (46) 46.0
 
March 18, 2019, 9 p.m. 7.5 ppb (7) 2.8 ppb (3) N/A 5.0 ppb (5) N/A N/A N/A 0.18 ppb (2) N/A 6.1 μg/m3 (25) 25.0
 
March 18, 2019, 8 p.m. 9.8 ppb (9) 4.0 ppb (4) N/A 6.0 ppb (6) N/A N/A N/A 0.21 ppb (2) N/A 7.5 μg/m3 (31) 31.0
 
March 18, 2019, 7 p.m. 8.2 ppb (8) 3.7 ppb (3) N/A 5.0 ppb (5) N/A N/A N/A 0.2 ppb (2) N/A -0.3 μg/m3 (0) 8.0
 
March 18, 2019, 6 p.m. 3.1 ppb (3) 1.3 ppb (1) N/A 2.0 ppb (2) N/A N/A N/A 0.16 ppb (2) N/A 4.0 μg/m3 (17) 17.0
 
March 18, 2019, 5 p.m. 6.8 ppb (6) 3.3 ppb (3) N/A 4.0 ppb (4) N/A N/A N/A 0.19 ppb (2) N/A 7.1 μg/m3 (30) 30.0
 
March 18, 2019, 4 p.m. 7.2 ppb (7) 3.3 ppb (3) N/A 4.0 ppb (4) N/A N/A N/A 0.19 ppb (2) N/A 3.6 μg/m3 (15) 15.0
 
March 18, 2019, 3 p.m. 4.6 ppb (4) 2.2 ppb (2) N/A 2.0 ppb (2) N/A N/A N/A 0.18 ppb (2) N/A 5.5 μg/m3 (23) 23.0
 
March 18, 2019, 2 p.m. 20.1 ppb (19) 9.2 ppb (9) N/A 11.0 ppb (10) N/A N/A N/A 0.29 ppb (3) N/A 4.0 μg/m3 (17) 19.0
 
March 18, 2019, 1 p.m. 13.6 ppb (13) 3.9 ppb (4) N/A 10.0 ppb (9) N/A N/A N/A 0.27 ppb (3) N/A 1.0 μg/m3 (4) 13.0
 
March 18, 2019, noon 11.1 ppb (10) 1.4 ppb (1) N/A 10.0 ppb (9) N/A N/A N/A 0.27 ppb (3) N/A 11.9 μg/m3 (50) 50.0
 
March 18, 2019, 11 a.m. 13.4 ppb (12) 1.2 ppb (1) N/A 12.0 ppb (11) N/A N/A N/A 0.26 ppb (3) N/A 4.8 μg/m3 (20) 20.0
 
March 18, 2019, 10 a.m. 17.8 ppb (16) 1.0 ppb (1) N/A 17.0 ppb (16) N/A N/A N/A 0.25 ppb (3) N/A 12.6 μg/m3 (51) 51.0
 
March 18, 2019, 9 a.m. 16.8 ppb (16) 0.9 ppb (1) N/A 16.0 ppb (15) N/A N/A N/A 0.23 ppb (3) N/A 10.8 μg/m3 (45) 45.0
 
March 18, 2019, 8 a.m. 15.2 ppb (14) 0.8 ppb (1) N/A 14.0 ppb (13) N/A N/A N/A 0.26 ppb (3) N/A 7.9 μg/m3 (33) 33.0
 
March 18, 2019, 7 a.m. 19.9 ppb (18) 1.0 ppb (1) N/A 19.0 ppb (18) N/A N/A N/A 0.29 ppb (3) N/A 9.4 μg/m3 (39) 39.0
 
March 18, 2019, 6 a.m. 13.3 ppb (12) 2.2 ppb (2) N/A 11.0 ppb (10) N/A N/A N/A 0.24 ppb (3) N/A 8.5 μg/m3 (35) 35.0
 
March 18, 2019, 5 a.m. 8.6 ppb (8) 1.0 ppb (1) N/A 8.0 ppb (7) N/A N/A N/A 0.21 ppb (2) N/A 5.2 μg/m3 (22) 22.0
 
March 18, 2019, 4 a.m. 5.1 ppb (5) 0.9 ppb (1) N/A 4.0 ppb (4) N/A N/A N/A 0.18 ppb (2) N/A 5.8 μg/m3 (24) 24.0
 
March 18, 2019, 3 a.m. 4.0 ppb (4) 0.8 ppb (1) N/A 3.0 ppb (3) N/A N/A N/A 0.18 ppb (2) N/A 2.5 μg/m3 (10) 10.0
 
March 18, 2019, 2 a.m. 6.7 ppb (6) 1.1 ppb (1) N/A 6.0 ppb (6) N/A N/A N/A 0.22 ppb (2) N/A 5.5 μg/m3 (23) 23.0
 
March 18, 2019, 1 a.m. 7.5 ppb (7) 1.0 ppb (1) N/A 7.0 ppb (6) N/A N/A N/A 0.23 ppb (3) N/A 5.8 μg/m3 (24) 24.0
 
March 18, 2019, midnight 7.5 ppb (7) 1.0 ppb (1) N/A 6.0 ppb (6) N/A N/A N/A 0.23 ppb (3) N/A 6.6 μg/m3 (28) 28.0
 
March 17, 2019, 11 p.m. 4.3 ppb (4) 0.9 ppb (1) N/A 3.0 ppb (3) N/A N/A N/A 0.21 ppb (2) N/A 7.8 μg/m3 (32) 32.0
 
March 17, 2019, 10 p.m. 6.6 ppb (6) 1.7 ppb (2) N/A 5.0 ppb (5) N/A N/A N/A 0.21 ppb (2) N/A 6.0 μg/m3 (25) 25.0
 
March 17, 2019, 9 p.m. 4.5 ppb (4) 1.3 ppb (1) N/A 3.0 ppb (3) N/A N/A N/A 0.18 ppb (2) N/A 3.8 μg/m3 (16) 16.0
 
March 17, 2019, 8 p.m. 9.0 ppb (8) 3.4 ppb (3) N/A 6.0 ppb (6) N/A N/A N/A 0.21 ppb (2) N/A 15.9 μg/m3 (58) 58.0
 
March 17, 2019, 7 p.m. 11.1 ppb (10) 4.6 ppb (4) N/A 7.0 ppb (6) N/A N/A N/A 0.24 ppb (3) N/A 6.9 μg/m3 (29) 29.0
 
March 17, 2019, 6 p.m. 7.6 ppb (7) 3.3 ppb (3) N/A 4.0 ppb (4) N/A N/A N/A 0.2 ppb (2) N/A 5.5 μg/m3 (23) 23.0
 
March 17, 2019, 5 p.m. 4.4 ppb (4) 1.6 ppb (1) N/A 3.0 ppb (3) N/A N/A N/A 0.2 ppb (2) N/A 8.2 μg/m3 (34) 34.0
 
March 17, 2019, 4 p.m. 6.4 ppb (6) 2.6 ppb (2) N/A 4.0 ppb (4) N/A N/A N/A 0.2 ppb (2) N/A 7.6 μg/m3 (32) 32.0
 
March 17, 2019, 3 p.m. 8.6 ppb (8) 3.3 ppb (3) N/A 5.0 ppb (5) N/A N/A N/A 0.21 ppb (2) N/A 8.2 μg/m3 (34) 34.0
 
March 17, 2019, 2 p.m. 5.0 ppb (5) 1.8 ppb (2) N/A 3.0 ppb (3) N/A N/A N/A 0.17 ppb (2) N/A 12.1 μg/m3 (50) 50.0
 
March 17, 2019, 1 p.m. 7.5 ppb (7) 1.5 ppb (1) N/A 6.0 ppb (6) N/A N/A N/A 0.17 ppb (2) N/A 6.6 μg/m3 (28) 28.0
 
March 17, 2019, noon 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 7.5 μg/m3 (31) 31.0
 
March 17, 2019, 11 a.m. 3.4 ppb (3) 0.6 ppb (1) N/A 3.0 ppb (3) N/A N/A N/A 0.16 ppb (2) N/A 6.0 μg/m3 (25) 25.0
 
March 17, 2019, 10 a.m. 4.9 ppb (5) 0.6 ppb (1) N/A 4.0 ppb (4) N/A N/A N/A N/A N/A 5.0 μg/m3 (21) 21.0
 
March 17, 2019, 9 a.m. 4.1 ppb (4) 0.6 ppb (1) N/A 4.0 ppb (4) N/A N/A N/A 0.16 ppb (2) N/A 5.0 μg/m3 (21) 21.0
 
March 17, 2019, 8 a.m. 2.7 ppb (3) 0.6 ppb (1) N/A 2.0 ppb (2) N/A N/A N/A 0.16 ppb (2) N/A 4.6 μg/m3 (19) 19.0
 
March 17, 2019, 7 a.m. 3.8 ppb (4) 0.6 ppb (1) N/A 3.0 ppb (3) N/A N/A N/A 0.17 ppb (2) N/A 3.2 μg/m3 (13) 13.0
 
March 17, 2019, 6 a.m. 3.9 ppb (4) 0.6 ppb (1) N/A 3.0 ppb (3) N/A N/A N/A 0.16 ppb (2) N/A 5.3 μg/m3 (22) 22.0
 
March 17, 2019, 5 a.m. 3.6 ppb (3) 0.6 ppb (1) N/A 3.0 ppb (3) N/A N/A N/A 0.17 ppb (2) N/A -0.3 μg/m3 (0) 3.0
 
March 17, 2019, 4 a.m. 6.5 ppb (6) 0.7 ppb (1) N/A 6.0 ppb (6) N/A N/A N/A 0.19 ppb (2) N/A 1.6 μg/m3 (7) 7.0
 
March 17, 2019, 3 a.m. 10.2 ppb (9) 0.6 ppb (1) N/A 10.0 ppb (9) N/A N/A N/A 0.21 ppb (2) N/A 5.4 μg/m3 (23) 23.0
 
March 17, 2019, 2 a.m. 15.2 ppb (14) 0.6 ppb (1) N/A 15.0 ppb (14) N/A N/A N/A 0.24 ppb (3) N/A 5.7 μg/m3 (24) 24.0
 
March 17, 2019, 1 a.m. 9.5 ppb (9) 0.7 ppb (1) N/A 9.0 ppb (8) N/A N/A N/A 0.2 ppb (2) N/A 4.8 μg/m3 (20) 20.0
 
March 17, 2019, midnight 4.5 ppb (4) 0.6 ppb (1) N/A 4.0 ppb (4) N/A N/A N/A 0.18 ppb (2) N/A 5.3 μg/m3 (22) 22.0
 
March 16, 2019, 11 p.m. 6.6 ppb (6) 1.3 ppb (1) N/A 5.0 ppb (5) N/A N/A N/A 0.2 ppb (2) N/A 6.6 μg/m3 (28) 28.0
 
March 16, 2019, 10 p.m. 5.8 ppb (5) 1.8 ppb (2) N/A 4.0 ppb (4) N/A N/A N/A 0.18 ppb (2) N/A 2.7 μg/m3 (11) 11.0
 
March 16, 2019, 9 p.m. 9.6 ppb (9) 3.9 ppb (4) N/A 6.0 ppb (6) N/A N/A N/A 0.23 ppb (3) N/A N/A 9.0
 
March 16, 2019, 8 p.m. 10.3 ppb (10) 4.4 ppb (4) N/A 6.0 ppb (6) N/A N/A N/A 0.21 ppb (2) N/A 0.5 μg/m3 (2) 10.0
 
March 16, 2019, 7 p.m. 11.5 ppb (11) 5.3 ppb (5) N/A 6.0 ppb (6) N/A N/A N/A 0.22 ppb (2) N/A 5.0 μg/m3 (21) 21.0
 
March 16, 2019, 6 p.m. 9.6 ppb (9) 4.7 ppb (4) N/A 5.0 ppb (5) N/A N/A N/A 0.21 ppb (2) N/A 0.3 μg/m3 (1) 9.0
 
March 16, 2019, 5 p.m. 10.6 ppb (10) 5.1 ppb (5) N/A 5.0 ppb (5) N/A N/A N/A 0.22 ppb (2) N/A 4.4 μg/m3 (18) 18.0
 
March 16, 2019, 4 p.m. 16.2 ppb (15) 7.7 ppb (7) N/A 9.0 ppb (8) N/A N/A N/A 0.24 ppb (3) N/A 4.3 μg/m3 (18) 18.0
 
March 16, 2019, 3 p.m. 21.4 ppb (20) 10.2 ppb (9) N/A 11.0 ppb (10) N/A N/A N/A 0.24 ppb (3) N/A 6.7 μg/m3 (28) 28.0
 
March 16, 2019, 2 p.m. 33.3 ppb (31) 15.7 ppb (15) N/A 18.0 ppb (17) N/A N/A N/A 0.32 ppb (4) N/A 3.2 μg/m3 (13) 31.0
 
March 16, 2019, 1 p.m. 53.8 ppb (50) 24.8 ppb (23) N/A 29.0 ppb (27) N/A N/A N/A 0.51 ppb (6) N/A 9.9 μg/m3 (41) 50.0
 
March 16, 2019, noon 77.1 ppb (75) 43.1 ppb (40) N/A 34.0 ppb (31) N/A N/A N/A 0.66 ppb (7) N/A 7.9 μg/m3 (33) 75.0
 
March 16, 2019, 11 a.m. 60.1 ppb (56) 27.4 ppb (25) N/A 33.0 ppb (31) N/A N/A N/A 0.51 ppb (6) N/A 6.3 μg/m3 (26) 56.0
 
March 16, 2019, 10 a.m. 62.7 ppb (59) 30.2 ppb (28) N/A 33.0 ppb (31) N/A N/A N/A 0.57 ppb (6) N/A 5.6 μg/m3 (23) 59.0
 
March 16, 2019, 9 a.m. 63.2 ppb (60) 32.2 ppb (30) N/A 31.0 ppb (29) N/A N/A N/A 0.56 ppb (6) N/A 8.3 μg/m3 (35) 60.0
 
March 16, 2019, 8 a.m. 82.0 ppb (80) 49.3 ppb (46) N/A 33.0 ppb (31) N/A N/A N/A 0.73 ppb (8) N/A 10.0 μg/m3 (42) 80.0
 
March 16, 2019, 7 a.m. 73.2 ppb (70) 39.6 ppb (37) N/A 34.0 ppb (31) N/A N/A N/A 0.76 ppb (8) N/A 8.8 μg/m3 (37) 70.0
 
March 16, 2019, 6 a.m. 78.8 ppb (76) 44.9 ppb (42) N/A 34.0 ppb (31) N/A N/A N/A 0.9 ppb (10) N/A 12.1 μg/m3 (50) 76.0
 
March 16, 2019, 5 a.m. 88.6 ppb (87) 50.8 ppb (47) N/A 38.0 ppb (35) N/A N/A N/A 0.76 ppb (8) N/A 9.6 μg/m3 (40) 87.0
 
March 16, 2019, 4 a.m. 56.8 ppb (53) 19.5 ppb (18) N/A 37.0 ppb (34) N/A N/A N/A 0.55 ppb (6) N/A 8.0 μg/m3 (33) 53.0
 
March 16, 2019, 3 a.m. 16.6 ppb (15) 0.9 ppb (1) N/A 16.0 ppb (15) N/A N/A N/A 0.29 ppb (3) N/A 6.6 μg/m3 (28) 28.0
 
March 16, 2019, 2 a.m. 11.7 ppb (11) 0.6 ppb (1) N/A 11.0 ppb (10) N/A N/A N/A 0.22 ppb (2) N/A 7.9 μg/m3 (33) 33.0
 
March 16, 2019, 1 a.m. 10.4 ppb (10) 0.6 ppb (1) N/A 10.0 ppb (9) N/A N/A N/A 0.22 ppb (2) N/A 5.2 μg/m3 (22) 22.0
 
March 16, 2019, midnight 3.8 ppb (4) 0.6 ppb (1) N/A 3.0 ppb (3) N/A N/A N/A 0.16 ppb (2) N/A 2.6 μg/m3 (11) 11.0
 
March 15, 2019, 11 p.m. 2.3 ppb (2) 0.7 ppb (1) N/A 2.0 ppb (2) N/A N/A N/A 0.15 ppb (2) N/A 4.8 μg/m3 (20) 20.0
 
March 15, 2019, 10 p.m. 2.8 ppb (3) 0.9 ppb (1) N/A 2.0 ppb (2) N/A N/A N/A 0.16 ppb (2) N/A 3.5 μg/m3 (15) 15.0
 
March 15, 2019, 9 p.m. 2.5 ppb (2) 1.0 ppb (1) N/A 2.0 ppb (2) N/A N/A N/A 0.15 ppb (2) N/A -1.6 μg/m3 (0) 2.0
 
March 15, 2019, 8 p.m. 2.4 ppb (2) 1.2 ppb (1) N/A 1.0 ppb (1) N/A N/A N/A 0.14 ppb (2) N/A N/A 2.0
 
March 15, 2019, 7 p.m. 2.5 ppb (2) 1.3 ppb (1) N/A 1.0 ppb (1) N/A N/A N/A 0.13 ppb (1) N/A 2.6 μg/m3 (11) 11.0
 
March 15, 2019, 6 p.m. 4.0 ppb (4) 1.8 ppb (2) N/A 2.0 ppb (2) N/A N/A N/A 0.15 ppb (2) N/A 6.1 μg/m3 (25) 25.0
 
March 15, 2019, 5 p.m. 3.7 ppb (3) 1.7 ppb (2) N/A 2.0 ppb (2) N/A N/A N/A 0.15 ppb (2) N/A 2.4 μg/m3 (10) 10.0
 
March 15, 2019, 4 p.m. 3.1 ppb (3) 1.4 ppb (1) N/A 2.0 ppb (2) N/A N/A N/A 0.16 ppb (2) N/A 4.3 μg/m3 (18) 18.0
 
March 15, 2019, 3 p.m. 3.7 ppb (3) 1.5 ppb (1) N/A 2.0 ppb (2) N/A N/A N/A 0.15 ppb (2) N/A 2.3 μg/m3 (10) 10.0
 
March 15, 2019, 2 p.m. 4.7 ppb (4) 1.5 ppb (1) N/A 3.0 ppb (3) N/A N/A N/A 0.15 ppb (2) N/A -0.4 μg/m3 (0) 4.0
 
March 15, 2019, 1 p.m. 6.1 ppb (6) 1.2 ppb (1) N/A 5.0 ppb (5) N/A N/A N/A 0.16 ppb (2) N/A 2.7 μg/m3 (11) 11.0
 
March 15, 2019, noon 6.4 ppb (6) 0.8 ppb (1) N/A 6.0 ppb (6) N/A N/A N/A 0.16 ppb (2) N/A 3.3 μg/m3 (14) 14.0
 
March 15, 2019, 11 a.m. 4.9 ppb (5) 0.6 ppb (1) N/A 4.0 ppb (4) N/A N/A N/A 0.16 ppb (2) N/A 1.7 μg/m3 (7) 7.0
 
March 15, 2019, 10 a.m. 4.5 ppb (4) 0.6 ppb (1) N/A 4.0 ppb (4) N/A N/A N/A N/A N/A 5.6 μg/m3 (23) 23.0
 
March 15, 2019, 9 a.m. 3.8 ppb (4) 0.6 ppb (1) N/A 3.0 ppb (3) N/A N/A N/A 0.13 ppb (1) N/A 2.2 μg/m3 (9) 9.0
 
March 15, 2019, 8 a.m. 3.3 ppb (3) 0.6 ppb (1) N/A 3.0 ppb (3) N/A N/A N/A 0.14 ppb (2) N/A 4.4 μg/m3 (18) 18.0
 
March 15, 2019, 7 a.m. 2.3 ppb (2) 0.6 ppb (1) N/A 2.0 ppb (2) N/A N/A N/A 0.13 ppb (1) N/A 2.6 μg/m3 (11) 11.0
 
March 15, 2019, 6 a.m. 2.2 ppb (2) 0.6 ppb (1) N/A 2.0 ppb (2) N/A N/A N/A 0.13 ppb (1) N/A 2.4 μg/m3 (10) 10.0
 
March 15, 2019, 5 a.m. 3.0 ppb (3) 0.6 ppb (1) N/A 2.0 ppb (2) N/A N/A N/A 0.14 ppb (2) N/A 1.3 μg/m3 (5) 5.0
 
March 15, 2019, 4 a.m. 3.4 ppb (3) 0.6 ppb (1) N/A 3.0 ppb (3) N/A N/A N/A 0.15 ppb (2) N/A 1.5 μg/m3 (6) 6.0
 
March 15, 2019, 3 a.m. 4.0 ppb (4) 0.7 ppb (1) N/A 3.0 ppb (3) N/A N/A N/A 0.16 ppb (2) N/A 5.0 μg/m3 (21) 21.0
 
March 15, 2019, 2 a.m. 5.2 ppb (5) 0.8 ppb (1) N/A 4.0 ppb (4) N/A N/A N/A 0.15 ppb (2) N/A 5.0 μg/m3 (21) 21.0
 
March 15, 2019, 1 a.m. 6.9 ppb (6) 1.1 ppb (1) N/A 6.0 ppb (6) N/A N/A N/A 0.16 ppb (2) N/A 3.7 μg/m3 (15) 15.0
 
March 15, 2019, midnight 7.6 ppb (7) 1.6 ppb (1) N/A 6.0 ppb (6) N/A N/A N/A 0.16 ppb (2) N/A 0.2 μg/m3 (1) 7.0
 
March 14, 2019, 11 p.m. 7.4 ppb (7) 1.8 ppb (2) N/A 6.0 ppb (6) N/A N/A N/A 0.17 ppb (2) N/A 2.7 μg/m3 (11) 11.0
 
March 14, 2019, 10 p.m. 11.8 ppb (11) 3.7 ppb (3) N/A 8.0 ppb (7) N/A N/A N/A 0.21 ppb (2) N/A 2.6 μg/m3 (11) 11.0
 
March 14, 2019, 9 p.m. 13.9 ppb (13) 4.9 ppb (5) N/A 9.0 ppb (8) N/A N/A N/A 0.21 ppb (2) N/A 2.2 μg/m3 (9) 13.0
 
March 14, 2019, 8 p.m. 12.4 ppb (11) 5.1 ppb (5) N/A 7.0 ppb (6) N/A N/A N/A 0.2 ppb (2) N/A 4.0 μg/m3 (17) 17.0
 
March 14, 2019, 7 p.m. 13.1 ppb (12) 5.5 ppb (5) N/A 8.0 ppb (7) N/A N/A N/A 0.2 ppb (2) N/A 2.0 μg/m3 (8) 12.0
 
March 14, 2019, 6 p.m. 13.5 ppb (12) 5.7 ppb (5) N/A 8.0 ppb (7) N/A N/A N/A 0.2 ppb (2) N/A 2.8 μg/m3 (12) 12.0
 
March 14, 2019, 5 p.m. 13.5 ppb (12) 6.2 ppb (6) N/A 7.0 ppb (6) N/A N/A N/A 0.19 ppb (2) N/A 2.8 μg/m3 (12) 12.0
 
March 14, 2019, 4 p.m. 11.4 ppb (11) 4.8 ppb (4) N/A 7.0 ppb (6) N/A N/A N/A 0.17 ppb (2) N/A 3.4 μg/m3 (14) 14.0
 
March 14, 2019, 3 p.m. 10.1 ppb (9) 4.7 ppb (4) N/A 5.0 ppb (5) N/A N/A N/A 0.16 ppb (2) N/A 3.5 μg/m3 (15) 15.0
 
March 14, 2019, 2 p.m. 11.1 ppb (10) 5.3 ppb (5) N/A 6.0 ppb (6) N/A N/A N/A 0.17 ppb (2) N/A 4.2 μg/m3 (18) 18.0
 
March 14, 2019, 1 p.m. 9.0 ppb (8) 4.1 ppb (4) N/A 5.0 ppb (5) N/A N/A N/A 0.17 ppb (2) N/A 1.4 μg/m3 (6) 8.0
 
March 14, 2019, noon 7.6 ppb (7) 3.6 ppb (3) N/A 4.0 ppb (4) N/A N/A N/A 0.17 ppb (2) N/A 3.4 μg/m3 (14) 14.0
 
March 14, 2019, 11 a.m. 7.4 ppb (7) 3.5 ppb (3) N/A 4.0 ppb (4) N/A N/A N/A 0.17 ppb (2) N/A 1.1 μg/m3 (5) 7.0
 
March 14, 2019, 10 a.m. 4.8 ppb (4) 2.7 ppb (3) N/A 2.0 ppb (2) N/A N/A N/A 0.15 ppb (2) N/A -0.4 μg/m3 (0) 4.0
 
March 14, 2019, 9 a.m. 3.5 ppb (3) 2.1 ppb (2) N/A 1.0 ppb (1) N/A N/A N/A 0.15 ppb (2) N/A 1.8 μg/m3 (8) 8.0
 
March 14, 2019, 8 a.m. 2.8 ppb (3) 1.7 ppb (2) N/A 1.0 ppb (1) N/A N/A N/A 0.14 ppb (2) N/A 4.2 μg/m3 (18) 18.0
 
March 14, 2019, 7 a.m. 2.4 ppb (2) 1.7 ppb (2) N/A 1.0 ppb (1) N/A N/A N/A 0.14 ppb (2) N/A 13.2 μg/m3 (53) 53.0
 
March 14, 2019, 6 a.m. 2.2 ppb (2) 1.6 ppb (1) N/A 1.0 ppb (1) N/A N/A N/A 0.14 ppb (2) N/A 8.9 μg/m3 (37) 37.0
 
March 14, 2019, 5 a.m. 3.0 ppb (3) 2.2 ppb (2) N/A 1.0 ppb (1) N/A N/A N/A 0.15 ppb (2) N/A 1.8 μg/m3 (8) 8.0
 
March 13, 2019, 5 p.m. 14.9 ppb (14) 10.7 ppb (10) N/A 4.0 ppb (4) N/A N/A N/A 0.25 ppb (3) N/A 3.9 μg/m3 (16) 16.0
 
March 13, 2019, 4 p.m. 16.0 ppb (15) 10.4 ppb (10) N/A 6.0 ppb (6) N/A N/A N/A 0.27 ppb (3) N/A 6.7 μg/m3 (28) 28.0
 
March 13, 2019, 3 p.m. 16.4 ppb (15) 10.5 ppb (10) N/A 6.0 ppb (6) N/A N/A N/A 0.26 ppb (3) N/A 5.6 μg/m3 (23) 23.0
 
March 13, 2019, 2 p.m. 16.1 ppb (15) 10.2 ppb (9) N/A 6.0 ppb (6) N/A N/A N/A 0.27 ppb (3) N/A 8.8 μg/m3 (37) 37.0
 
March 13, 2019, 1 p.m. 21.5 ppb (20) 11.7 ppb (11) N/A 10.0 ppb (9) N/A N/A N/A 0.32 ppb (4) N/A 6.9 μg/m3 (29) 29.0
 
March 13, 2019, noon 18.4 ppb (17) 10.7 ppb (10) N/A 8.0 ppb (7) N/A N/A N/A 0.3 ppb (3) N/A 6.9 μg/m3 (29) 29.0
 
March 13, 2019, 11 a.m. 11.8 ppb (11) 7.0 ppb (6) N/A 5.0 ppb (5) N/A N/A N/A 0.27 ppb (3) N/A 5.3 μg/m3 (22) 22.0
 
March 13, 2019, 10 a.m. 8.9 ppb (8) 5.3 ppb (5) N/A 4.0 ppb (4) N/A N/A N/A N/A N/A 7.8 μg/m3 (32) 32.0
 
March 13, 2019, 9 a.m. 6.7 ppb (6) 4.0 ppb (4) N/A 3.0 ppb (3) N/A N/A N/A 0.21 ppb (2) N/A 8.6 μg/m3 (36) 36.0
 
March 13, 2019, 8 a.m. 3.9 ppb (4) 2.3 ppb (2) N/A 2.0 ppb (2) N/A N/A N/A 0.17 ppb (2) N/A 5.0 μg/m3 (21) 21.0
 
March 13, 2019, 7 a.m. 3.2 ppb (3) 2.0 ppb (2) N/A 1.0 ppb (1) N/A N/A N/A 0.17 ppb (2) N/A 2.3 μg/m3 (10) 10.0
 
March 13, 2019, 6 a.m. 3.5 ppb (3) 2.0 ppb (2) N/A 1.0 ppb (1) N/A N/A N/A 0.17 ppb (2) N/A 4.9 μg/m3 (20) 20.0
 
March 13, 2019, 5 a.m. 4.8 ppb (4) 3.2 ppb (3) N/A 2.0 ppb (2) N/A N/A N/A 0.18 ppb (2) N/A 0.7 μg/m3 (3) 4.0
 
March 13, 2019, 4 a.m. 5.5 ppb (5) 3.7 ppb (3) N/A 2.0 ppb (2) N/A N/A N/A 0.19 ppb (2) N/A 3.2 μg/m3 (13) 13.0
 
March 13, 2019, 3 a.m. 6.1 ppb (6) 3.9 ppb (4) N/A 2.0 ppb (2) N/A N/A N/A 0.2 ppb (2) N/A 1.8 μg/m3 (8) 8.0
 
March 13, 2019, 2 a.m. 8.0 ppb (7) 5.1 ppb (5) N/A 3.0 ppb (3) N/A N/A N/A 0.2 ppb (2) N/A 11.2 μg/m3 (47) 47.0
 
March 13, 2019, 1 a.m. 12.2 ppb (11) 7.8 ppb (7) N/A 4.0 ppb (4) N/A N/A N/A 0.21 ppb (2) N/A 4.3 μg/m3 (18) 18.0
 
March 13, 2019, midnight 13.3 ppb (12) 7.6 ppb (7) N/A 6.0 ppb (6) N/A N/A N/A 0.25 ppb (3) N/A 1.7 μg/m3 (7) 12.0
 
March 12, 2019, 11 p.m. 20.6 ppb (19) 12.0 ppb (11) N/A 9.0 ppb (8) N/A N/A N/A 0.3 ppb (3) N/A -1.5 μg/m3 (0) 19.0
 
March 12, 2019, 10 p.m. 22.0 ppb (20) 13.1 ppb (12) N/A 9.0 ppb (8) N/A N/A N/A 0.32 ppb (4) N/A 3.6 μg/m3 (15) 20.0
 
March 12, 2019, 9 p.m. 21.7 ppb (20) 14.3 ppb (13) N/A 7.0 ppb (6) N/A N/A N/A 0.3 ppb (3) N/A 1.8 μg/m3 (8) 20.0
 
March 12, 2019, 8 p.m. 22.6 ppb (21) 14.8 ppb (14) N/A 8.0 ppb (7) N/A N/A N/A 0.26 ppb (3) N/A 4.5 μg/m3 (19) 21.0
 
March 12, 2019, 7 p.m. 24.2 ppb (22) 13.6 ppb (13) N/A 11.0 ppb (10) N/A N/A N/A 0.29 ppb (3) N/A 4.6 μg/m3 (19) 22.0
 
March 12, 2019, 6 p.m. 23.0 ppb (21) 13.6 ppb (13) N/A 9.0 ppb (8) N/A N/A N/A 0.29 ppb (3) N/A 2.1 μg/m3 (9) 21.0
 
March 12, 2019, 5 p.m. 27.8 ppb (26) 17.9 ppb (17) N/A 10.0 ppb (9) N/A N/A N/A 0.27 ppb (3) N/A 7.9 μg/m3 (33) 33.0
 
March 12, 2019, 4 p.m. 30.2 ppb (28) 19.2 ppb (18) N/A 11.0 ppb (10) N/A N/A N/A 0.29 ppb (3) N/A 7.1 μg/m3 (30) 30.0
 
March 12, 2019, 3 p.m. 23.9 ppb (22) 15.0 ppb (14) N/A 9.0 ppb (8) N/A N/A N/A 0.27 ppb (3) N/A 8.7 μg/m3 (36) 36.0
 
March 12, 2019, 2 p.m. 23.9 ppb (22) 15.2 ppb (14) N/A 9.0 ppb (8) N/A N/A N/A 0.29 ppb (3) N/A 7.6 μg/m3 (32) 32.0
 
March 12, 2019, 1 p.m. 23.9 ppb (22) 14.3 ppb (13) N/A 10.0 ppb (9) N/A N/A N/A 0.32 ppb (4) N/A 9.1 μg/m3 (38) 38.0
 
March 12, 2019, noon 23.1 ppb (21) 12.0 ppb (11) N/A 11.0 ppb (10) N/A N/A N/A 0.33 ppb (4) N/A 8.4 μg/m3 (35) 35.0
 
March 12, 2019, 11 a.m. 22.7 ppb (21) 10.9 ppb (10) N/A 12.0 ppb (11) N/A N/A N/A 0.34 ppb (4) N/A 5.4 μg/m3 (23) 23.0