AQSQID: 291890016

Site Name: Rider Trail I-70

Location: Bridgeton, MO

Reporting: True, Located: True

Current AQI: 9.0

Bridgeton MO, US: 38.75264, -90.44884

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
May 23, 2019, 10 a.m. 25.1 ppb (23) 8.3 ppb (8) N/A 17.0 ppb (16) N/A 0.0 ppb (0) N/A N/A N/A N/A 23.0
 
May 23, 2019, 9 a.m. 10.0 ppb (9) 1.7 ppb (2) N/A 8.0 ppb (7) N/A 0.0 ppb (0) N/A N/A N/A N/A 9.0
 
May 23, 2019, 8 a.m. 4.7 ppb (4) 1.4 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) N/A N/A N/A N/A 4.0
 
May 23, 2019, 7 a.m. 4.1 ppb (4) 0.4 ppb (0) N/A 4.0 ppb (4) N/A 0.0 ppb (0) N/A N/A N/A N/A 4.0
 
May 23, 2019, 6 a.m. 2.5 ppb (2) 0.3 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) N/A N/A N/A N/A 2.0
 
May 23, 2019, 5 a.m. 4.5 ppb (4) 1.3 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) N/A N/A N/A N/A 4.0
 
May 23, 2019, 4 a.m. 6.2 ppb (6) 2.0 ppb (2) N/A 4.0 ppb (4) N/A 1.0 ppb (1) N/A N/A N/A N/A 6.0
 
May 23, 2019, 3 a.m. 8.5 ppb (8) 2.8 ppb (3) N/A 6.0 ppb (6) N/A 1.0 ppb (1) N/A N/A N/A N/A 8.0
 
May 23, 2019, 2 a.m. 8.2 ppb (8) 2.8 ppb (3) N/A 5.0 ppb (5) N/A 1.0 ppb (1) N/A N/A N/A N/A 8.0
 
May 23, 2019, 1 a.m. 9.6 ppb (9) 3.6 ppb (3) N/A 6.0 ppb (6) N/A 1.0 ppb (1) N/A N/A N/A N/A 9.0
 
May 23, 2019, midnight 11.2 ppb (10) 4.8 ppb (4) N/A 6.0 ppb (6) N/A 1.0 ppb (1) N/A N/A N/A N/A 10.0
 
May 22, 2019, 11 p.m. 12.5 ppb (12) 5.4 ppb (5) N/A 7.0 ppb (6) N/A 1.0 ppb (1) N/A N/A N/A N/A 12.0
 
May 22, 2019, 10 p.m. 14.2 ppb (13) 7.3 ppb (7) N/A 7.0 ppb (6) N/A 1.0 ppb (1) N/A N/A N/A N/A 13.0
 
May 22, 2019, 9 p.m. 12.8 ppb (12) 5.9 ppb (5) N/A 7.0 ppb (6) N/A 1.0 ppb (1) N/A N/A N/A N/A 12.0
 
May 22, 2019, 8 p.m. 24.4 ppb (23) 14.1 ppb (13) N/A 10.0 ppb (9) N/A 1.0 ppb (1) N/A N/A N/A N/A 23.0
 
May 22, 2019, 7 p.m. 16.3 ppb (15) 6.8 ppb (6) N/A 9.0 ppb (8) N/A 1.0 ppb (1) N/A N/A N/A N/A 15.0
 
May 22, 2019, 6 p.m. 19.5 ppb (18) 8.7 ppb (8) N/A 11.0 ppb (10) N/A 1.0 ppb (1) N/A N/A N/A N/A 18.0
 
May 22, 2019, 5 p.m. 20.2 ppb (19) 8.8 ppb (8) N/A 11.0 ppb (10) N/A 1.0 ppb (1) N/A N/A N/A N/A 19.0
 
May 22, 2019, 4 p.m. 21.2 ppb (20) 9.3 ppb (9) N/A 12.0 ppb (11) N/A 1.0 ppb (1) N/A N/A N/A N/A 20.0
 
May 22, 2019, 3 p.m. 27.0 ppb (25) 13.1 ppb (12) N/A 14.0 ppb (13) N/A 1.0 ppb (1) N/A N/A N/A N/A 25.0
 
May 22, 2019, 2 p.m. 31.1 ppb (29) 14.4 ppb (13) N/A 17.0 ppb (16) N/A 1.0 ppb (1) N/A N/A N/A N/A 29.0
 
May 22, 2019, 1 p.m. 30.3 ppb (28) 14.3 ppb (13) N/A 16.0 ppb (15) N/A 1.0 ppb (1) N/A N/A N/A N/A 28.0
 
May 22, 2019, noon 29.2 ppb (27) 13.0 ppb (12) N/A 16.0 ppb (15) N/A 1.0 ppb (1) N/A N/A N/A N/A 27.0
 
May 22, 2019, 11 a.m. 27.3 ppb (25) 10.6 ppb (10) N/A 17.0 ppb (16) N/A 1.0 ppb (1) N/A N/A N/A N/A 25.0
 
May 22, 2019, 10 a.m. 21.4 ppb (20) 7.7 ppb (7) N/A 14.0 ppb (13) N/A 0.0 ppb (0) N/A N/A N/A N/A 20.0
 
May 22, 2019, 9 a.m. 10.5 ppb (10) 3.0 ppb (3) N/A 7.0 ppb (6) N/A 0.0 ppb (0) N/A N/A N/A N/A 10.0
 
May 22, 2019, 8 a.m. 7.4 ppb (7) 1.8 ppb (2) N/A 6.0 ppb (6) N/A 0.0 ppb (0) N/A N/A N/A N/A 7.0
 
May 22, 2019, 7 a.m. 7.0 ppb (6) 1.8 ppb (2) N/A 5.0 ppb (5) N/A 0.0 ppb (0) N/A N/A N/A N/A 6.0
 
May 22, 2019, 6 a.m. 8.2 ppb (8) 1.8 ppb (2) N/A 6.0 ppb (6) N/A 0.0 ppb (0) N/A N/A N/A N/A 8.0
 
May 22, 2019, 5 a.m. 8.3 ppb (8) 1.2 ppb (1) N/A 7.0 ppb (6) N/A 0.0 ppb (0) N/A N/A N/A N/A 8.0
 
May 22, 2019, 4 a.m. 9.8 ppb (9) 2.0 ppb (2) N/A 8.0 ppb (7) N/A 0.0 ppb (0) N/A N/A N/A N/A 9.0
 
May 22, 2019, 3 a.m. 8.5 ppb (8) 1.4 ppb (1) N/A 7.0 ppb (6) N/A 0.0 ppb (0) N/A N/A N/A N/A 8.0
 
May 22, 2019, 2 a.m. 8.2 ppb (8) 0.7 ppb (1) N/A 7.0 ppb (6) N/A 0.0 ppb (0) N/A N/A N/A N/A 8.0
 
May 22, 2019, 1 a.m. 13.2 ppb (12) 2.3 ppb (2) N/A 11.0 ppb (10) N/A 0.0 ppb (0) N/A N/A N/A N/A 12.0
 
May 22, 2019, midnight 5.9 ppb (5) 1.2 ppb (1) N/A 5.0 ppb (5) N/A 0.0 ppb (0) N/A N/A N/A N/A 5.0
 
May 21, 2019, 11 p.m. 5.1 ppb (5) 0.6 ppb (1) N/A 5.0 ppb (5) N/A 1.0 ppb (1) N/A N/A N/A N/A 5.0
 
May 21, 2019, 10 p.m. 6.9 ppb (6) 0.7 ppb (1) N/A 6.0 ppb (6) N/A 1.0 ppb (1) N/A N/A N/A N/A 6.0
 
May 21, 2019, 9 p.m. 9.5 ppb (9) 2.7 ppb (3) N/A 7.0 ppb (6) N/A 1.0 ppb (1) N/A N/A N/A N/A 9.0
 
May 21, 2019, 8 p.m. 8.5 ppb (8) 2.2 ppb (2) N/A 6.0 ppb (6) N/A 1.0 ppb (1) N/A N/A N/A N/A 8.0
 
May 21, 2019, 7 p.m. 12.1 ppb (11) 4.8 ppb (4) N/A 7.0 ppb (6) N/A 1.0 ppb (1) N/A N/A N/A N/A 11.0
 
May 21, 2019, 6 p.m. 22.0 ppb (20) 12.9 ppb (12) N/A 9.0 ppb (8) N/A 1.0 ppb (1) N/A N/A N/A N/A 20.0
 
May 21, 2019, 5 p.m. 25.7 ppb (24) 15.7 ppb (15) N/A 10.0 ppb (9) N/A 1.0 ppb (1) N/A N/A N/A N/A 24.0
 
May 21, 2019, 4 p.m. 25.4 ppb (24) 15.7 ppb (15) N/A 10.0 ppb (9) N/A 1.0 ppb (1) N/A N/A N/A N/A 24.0
 
May 21, 2019, 3 p.m. 25.7 ppb (24) 16.5 ppb (15) N/A 9.0 ppb (8) N/A 0.0 ppb (0) N/A N/A N/A N/A 24.0
 
May 21, 2019, 2 p.m. 21.8 ppb (20) 13.9 ppb (13) N/A 8.0 ppb (7) N/A 0.0 ppb (0) N/A N/A N/A N/A 20.0
 
May 21, 2019, 1 p.m. 15.9 ppb (15) 8.8 ppb (8) N/A 7.0 ppb (6) N/A 0.0 ppb (0) N/A N/A N/A N/A 15.0
 
May 21, 2019, noon 15.2 ppb (14) 8.0 ppb (7) N/A 7.0 ppb (6) N/A 0.0 ppb (0) N/A N/A N/A N/A 14.0
 
May 21, 2019, 11 a.m. 5.9 ppb (5) 1.2 ppb (1) N/A 5.0 ppb (5) N/A 0.0 ppb (0) N/A N/A N/A N/A 5.0
 
May 21, 2019, 10 a.m. 2.4 ppb (2) 0.1 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) N/A N/A N/A N/A 2.0
 
May 21, 2019, 9 a.m. 1.6 ppb (1) -0.2 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) N/A N/A N/A N/A 2.0
 
May 21, 2019, 8 a.m. 1.4 ppb (1) -0.2 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) N/A N/A N/A N/A 2.0
 
May 21, 2019, 7 a.m. 3.4 ppb (3) 0.9 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) N/A N/A N/A N/A 3.0
 
May 21, 2019, 6 a.m. 2.3 ppb (2) -0.1 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) N/A N/A N/A N/A 2.0
 
May 21, 2019, 5 a.m. 2.3 ppb (2) -0.1 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) N/A N/A N/A N/A 2.0
 
May 21, 2019, 4 a.m. 2.7 ppb (3) -0.1 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) N/A N/A N/A N/A 3.0
 
May 21, 2019, 3 a.m. 2.9 ppb (3) 0.0 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) N/A N/A N/A N/A 3.0
 
May 21, 2019, 2 a.m. 2.5 ppb (2) -0.2 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) N/A N/A N/A N/A 3.0
 
May 21, 2019, 1 a.m. 1.2 ppb (1) -0.1 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) N/A N/A N/A N/A 1.0
 
May 21, 2019, midnight 1.2 ppb (1) 0.1 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) N/A N/A N/A N/A 1.0
 
May 20, 2019, 11 p.m. 1.0 ppb (1) -0.1 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) N/A N/A N/A N/A 1.0
 
May 20, 2019, 10 p.m. 0.9 ppb (1) 0.1 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) N/A N/A N/A N/A 1.0
 
May 20, 2019, 9 p.m. 1.4 ppb (1) 0.3 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) N/A N/A N/A N/A 1.0
 
May 20, 2019, 8 p.m. 1.6 ppb (1) 0.5 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) N/A N/A N/A N/A 1.0
 
May 20, 2019, 7 p.m. 3.3 ppb (3) 1.4 ppb (1) N/A 2.0 ppb (2) N/A 0.0 ppb (0) N/A N/A N/A N/A 3.0
 
May 20, 2019, 6 p.m. 3.9 ppb (4) 1.8 ppb (2) N/A 2.0 ppb (2) N/A 0.0 ppb (0) N/A N/A N/A N/A 4.0
 
May 20, 2019, 5 p.m. 3.0 ppb (3) 1.4 ppb (1) N/A 2.0 ppb (2) N/A 0.0 ppb (0) N/A N/A N/A N/A 3.0
 
May 20, 2019, 4 p.m. 2.2 ppb (2) 1.0 ppb (1) N/A 1.0 ppb (1) N/A 0.0 ppb (0) N/A N/A N/A N/A 2.0
 
May 20, 2019, 3 p.m. 8.3 ppb (8) 4.7 ppb (4) N/A 4.0 ppb (4) N/A 0.0 ppb (0) N/A N/A N/A N/A 8.0
 
May 20, 2019, 2 p.m. 14.1 ppb (13) 8.5 ppb (8) N/A 6.0 ppb (6) N/A 0.0 ppb (0) N/A N/A N/A N/A 13.0
 
May 20, 2019, 1 p.m. 9.1 ppb (8) 5.1 ppb (5) N/A 4.0 ppb (4) N/A 0.0 ppb (0) N/A N/A N/A N/A 8.0
 
May 20, 2019, noon 9.3 ppb (9) 4.3 ppb (4) N/A 5.0 ppb (5) N/A 0.0 ppb (0) N/A N/A N/A N/A 9.0
 
May 20, 2019, 11 a.m. 16.2 ppb (15) 7.7 ppb (7) N/A 8.0 ppb (7) N/A 0.0 ppb (0) N/A N/A N/A N/A 15.0
 
May 20, 2019, 10 a.m. 7.5 ppb (7) 0.4 ppb (0) N/A 7.0 ppb (6) N/A 0.0 ppb (0) N/A N/A N/A N/A 7.0
 
May 20, 2019, 9 a.m. 3.2 ppb (3) 0.4 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) N/A N/A N/A N/A 3.0
 
May 20, 2019, 8 a.m. 1.3 ppb (1) -0.2 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) N/A N/A N/A N/A 1.0
 
May 20, 2019, 7 a.m. 7.8 ppb (7) 0.9 ppb (1) N/A 7.0 ppb (6) N/A 0.0 ppb (0) N/A N/A N/A N/A 7.0
 
May 20, 2019, 6 a.m. 10.8 ppb (10) 3.1 ppb (3) N/A 8.0 ppb (7) N/A 1.0 ppb (1) N/A N/A N/A N/A 10.0
 
May 20, 2019, 5 a.m. 7.5 ppb (7) 2.6 ppb (2) N/A 5.0 ppb (5) N/A 1.0 ppb (1) N/A N/A N/A N/A 7.0
 
May 20, 2019, 4 a.m. 0.7 ppb (1) -0.1 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (1) N/A N/A N/A N/A 1.0
 
May 20, 2019, 3 a.m. 0.5 ppb (0) -0.1 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) N/A N/A N/A N/A 1.0
 
May 20, 2019, 2 a.m. 5.4 ppb (5) 0.6 ppb (1) N/A 5.0 ppb (5) N/A 0.0 ppb (0) N/A N/A N/A N/A 5.0
 
May 20, 2019, 1 a.m. 1.3 ppb (1) -0.1 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) N/A N/A N/A N/A 1.0
 
May 20, 2019, midnight 5.9 ppb (5) 1.6 ppb (1) N/A 4.0 ppb (4) N/A 0.0 ppb (0) N/A N/A N/A N/A 5.0
 
May 19, 2019, 11 p.m. 7.8 ppb (7) 3.3 ppb (3) N/A 4.0 ppb (4) N/A 0.0 ppb (0) N/A N/A N/A N/A 7.0
 
May 19, 2019, 10 p.m. 8.4 ppb (8) 3.5 ppb (3) N/A 5.0 ppb (5) N/A 0.0 ppb (0) N/A N/A N/A N/A 8.0
 
May 19, 2019, 9 p.m. 6.9 ppb (6) 3.1 ppb (3) N/A 4.0 ppb (4) N/A 0.0 ppb (0) N/A N/A N/A N/A 6.0
 
May 19, 2019, 8 p.m. 7.2 ppb (7) 3.1 ppb (3) N/A 4.0 ppb (4) N/A 0.0 ppb (0) N/A N/A N/A N/A 7.0
 
May 19, 2019, 7 p.m. 6.8 ppb (6) 3.3 ppb (3) N/A 3.0 ppb (3) N/A 0.0 ppb (0) N/A N/A N/A N/A 6.0
 
May 19, 2019, 6 p.m. 7.7 ppb (7) 3.9 ppb (4) N/A 4.0 ppb (4) N/A 0.0 ppb (0) N/A N/A N/A N/A 7.0
 
May 19, 2019, 5 p.m. 5.0 ppb (5) 2.6 ppb (2) N/A 2.0 ppb (2) N/A 1.0 ppb (1) N/A N/A N/A N/A 5.0
 
May 19, 2019, 4 p.m. 8.7 ppb (8) 4.1 ppb (4) N/A 5.0 ppb (5) N/A 2.0 ppb (3) N/A N/A N/A N/A 8.0
 
May 19, 2019, 3 p.m. 5.4 ppb (5) 2.6 ppb (2) N/A 3.0 ppb (3) N/A 0.0 ppb (0) N/A N/A N/A N/A 5.0
 
May 19, 2019, 2 p.m. 4.3 ppb (4) 2.1 ppb (2) N/A 2.0 ppb (2) N/A 0.0 ppb (0) N/A N/A N/A N/A 4.0
 
May 19, 2019, 1 p.m. 3.1 ppb (3) 1.5 ppb (1) N/A 2.0 ppb (2) N/A 0.0 ppb (0) N/A N/A N/A N/A 3.0
 
May 19, 2019, noon 2.5 ppb (2) 1.3 ppb (1) N/A 1.0 ppb (1) N/A 0.0 ppb (0) N/A N/A N/A N/A 2.0
 
May 19, 2019, 11 a.m. 2.3 ppb (2) 0.9 ppb (1) N/A 1.0 ppb (1) N/A 0.0 ppb (0) N/A N/A N/A N/A 2.0
 
May 19, 2019, 10 a.m. 1.5 ppb (1) 0.4 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) N/A N/A N/A N/A 1.0
 
May 19, 2019, 9 a.m. 1.4 ppb (1) 0.2 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) N/A N/A N/A N/A 1.0
 
May 19, 2019, 8 a.m. 2.4 ppb (2) 0.6 ppb (1) N/A 2.0 ppb (2) N/A 0.0 ppb (0) N/A N/A N/A N/A 2.0
 
May 19, 2019, 7 a.m. 1.9 ppb (2) 0.3 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) N/A N/A N/A N/A 2.0
 
May 19, 2019, 6 a.m. 2.9 ppb (3) 0.3 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) N/A N/A N/A N/A 3.0
 
May 19, 2019, 5 a.m. 3.9 ppb (4) 0.8 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) N/A N/A N/A N/A 4.0
 
May 19, 2019, 4 a.m. 5.9 ppb (5) 1.3 ppb (1) N/A 5.0 ppb (5) N/A 0.0 ppb (0) N/A N/A N/A N/A 5.0
 
May 19, 2019, 3 a.m. 8.3 ppb (8) 2.0 ppb (2) N/A 6.0 ppb (6) N/A 0.0 ppb (0) N/A N/A N/A N/A 8.0
 
May 19, 2019, 2 a.m. 9.3 ppb (9) 2.4 ppb (2) N/A 7.0 ppb (6) N/A 0.0 ppb (0) N/A N/A N/A N/A 9.0
 
May 19, 2019, 1 a.m. 5.2 ppb (5) 1.1 ppb (1) N/A 4.0 ppb (4) N/A 1.0 ppb (1) N/A N/A N/A N/A 5.0
 
May 19, 2019, midnight 9.0 ppb (8) 2.3 ppb (2) N/A 7.0 ppb (6) N/A 1.0 ppb (1) N/A N/A N/A N/A 8.0
 
May 18, 2019, 11 p.m. 9.1 ppb (8) 3.3 ppb (3) N/A 6.0 ppb (6) N/A 1.0 ppb (1) N/A N/A N/A N/A 8.0
 
May 18, 2019, 10 p.m. 8.2 ppb (8) 3.2 ppb (3) N/A 5.0 ppb (5) N/A 1.0 ppb (1) N/A N/A N/A N/A 8.0
 
May 18, 2019, 9 p.m. 9.1 ppb (8) 3.6 ppb (3) N/A 5.0 ppb (5) N/A 1.0 ppb (1) N/A N/A N/A N/A 8.0
 
May 18, 2019, 8 p.m. 9.6 ppb (9) 4.0 ppb (4) N/A 6.0 ppb (6) N/A 1.0 ppb (1) N/A N/A N/A N/A 9.0
 
May 18, 2019, 7 p.m. 7.8 ppb (7) 3.3 ppb (3) N/A 4.0 ppb (4) N/A 1.0 ppb (1) N/A N/A N/A N/A 7.0
 
May 18, 2019, 6 p.m. 7.1 ppb (7) 3.2 ppb (3) N/A 4.0 ppb (4) N/A 1.0 ppb (1) N/A N/A N/A N/A 7.0
 
May 18, 2019, 5 p.m. 10.0 ppb (9) 4.8 ppb (4) N/A 5.0 ppb (5) N/A 1.0 ppb (1) N/A N/A N/A N/A 9.0
 
May 18, 2019, 4 p.m. 7.5 ppb (7) 3.3 ppb (3) N/A 4.0 ppb (4) N/A 1.0 ppb (1) N/A N/A N/A N/A 7.0
 
May 18, 2019, 3 p.m. 9.2 ppb (9) 4.0 ppb (4) N/A 5.0 ppb (5) N/A 1.0 ppb (1) N/A N/A N/A N/A 9.0
 
May 18, 2019, 2 p.m. 9.4 ppb (9) 4.0 ppb (4) N/A 5.0 ppb (5) N/A 1.0 ppb (1) N/A N/A N/A N/A 9.0
 
May 18, 2019, 1 p.m. 13.3 ppb (12) 4.9 ppb (5) N/A 8.0 ppb (7) N/A 1.0 ppb (1) N/A N/A N/A N/A 12.0
 
May 18, 2019, noon 17.4 ppb (16) 5.4 ppb (5) N/A 12.0 ppb (11) N/A 1.0 ppb (1) N/A N/A N/A N/A 16.0
 
May 18, 2019, 11 a.m. 15.8 ppb (15) 3.6 ppb (3) N/A 12.0 ppb (11) N/A 1.0 ppb (1) N/A N/A N/A N/A 15.0
 
May 18, 2019, 10 a.m. 9.3 ppb (9) 2.1 ppb (2) N/A 7.0 ppb (6) N/A 1.0 ppb (1) N/A N/A N/A N/A 9.0
 
May 18, 2019, 9 a.m. 9.4 ppb (9) 1.2 ppb (1) N/A 8.0 ppb (7) N/A 1.0 ppb (1) N/A N/A N/A N/A 9.0
 
May 18, 2019, 8 a.m. 10.5 ppb (10) 1.1 ppb (1) N/A 9.0 ppb (8) N/A 1.0 ppb (1) N/A N/A N/A N/A 10.0
 
May 18, 2019, 7 a.m. 7.5 ppb (7) 0.8 ppb (1) N/A 7.0 ppb (6) N/A 1.0 ppb (1) N/A N/A N/A N/A 7.0
 
May 18, 2019, 6 a.m. 6.8 ppb (6) 1.5 ppb (1) N/A 5.0 ppb (5) N/A 1.0 ppb (1) N/A N/A N/A N/A 6.0
 
May 18, 2019, 5 a.m. 5.6 ppb (5) 1.1 ppb (1) N/A 5.0 ppb (5) N/A 1.0 ppb (1) N/A N/A N/A N/A 5.0
 
May 18, 2019, 4 a.m. 6.2 ppb (6) 1.6 ppb (1) N/A 5.0 ppb (5) N/A 2.0 ppb (3) N/A N/A N/A N/A 6.0
 
May 18, 2019, 3 a.m. 9.0 ppb (8) 3.1 ppb (3) N/A 6.0 ppb (6) N/A 1.0 ppb (1) N/A N/A N/A N/A 8.0
 
May 18, 2019, 2 a.m. 13.5 ppb (12) 3.5 ppb (3) N/A 10.0 ppb (9) N/A 1.0 ppb (1) N/A N/A N/A N/A 12.0
 
May 18, 2019, 1 a.m. 11.8 ppb (11) 3.1 ppb (3) N/A 9.0 ppb (8) N/A 1.0 ppb (1) N/A N/A N/A N/A 11.0
 
May 18, 2019, midnight 12.8 ppb (12) 4.4 ppb (4) N/A 8.0 ppb (7) N/A 1.0 ppb (1) N/A N/A N/A N/A 12.0
 
May 17, 2019, 11 p.m. 16.4 ppb (15) 5.8 ppb (5) N/A 11.0 ppb (10) N/A 1.0 ppb (1) N/A N/A N/A N/A 15.0
 
May 17, 2019, 10 p.m. 15.8 ppb (15) 6.2 ppb (6) N/A 10.0 ppb (9) N/A 1.0 ppb (1) N/A N/A N/A N/A 15.0
 
May 17, 2019, 9 p.m. 20.3 ppb (19) 8.6 ppb (8) N/A 12.0 ppb (11) N/A 1.0 ppb (1) N/A N/A N/A N/A 19.0
 
May 17, 2019, 8 p.m. 24.2 ppb (22) 9.9 ppb (9) N/A 14.0 ppb (13) N/A 1.0 ppb (1) N/A N/A N/A N/A 22.0
 
May 17, 2019, 7 p.m. 22.8 ppb (21) 9.4 ppb (9) N/A 13.0 ppb (12) N/A 1.0 ppb (1) N/A N/A N/A N/A 21.0
 
May 17, 2019, 6 p.m. 21.7 ppb (20) 7.6 ppb (7) N/A 14.0 ppb (13) N/A 9.0 ppb (13) N/A N/A N/A N/A 20.0
 
May 17, 2019, 5 p.m. 18.8 ppb (17) 7.8 ppb (7) N/A 11.0 ppb (10) N/A 5.0 ppb (7) N/A N/A N/A N/A 17.0
 
May 17, 2019, 4 p.m. 16.9 ppb (16) 6.5 ppb (6) N/A 10.0 ppb (9) N/A 2.0 ppb (3) N/A N/A N/A N/A 16.0
 
May 17, 2019, 3 p.m. 16.7 ppb (15) 6.6 ppb (6) N/A 10.0 ppb (9) N/A 4.0 ppb (6) N/A N/A N/A N/A 15.0
 
May 17, 2019, 2 p.m. 19.3 ppb (18) 8.0 ppb (7) N/A 11.0 ppb (10) N/A 3.0 ppb (4) N/A N/A N/A N/A 18.0
 
May 17, 2019, 1 p.m. 25.2 ppb (23) 9.8 ppb (9) N/A 15.0 ppb (14) N/A 3.0 ppb (4) N/A N/A N/A N/A 23.0
 
May 17, 2019, noon 31.3 ppb (29) 9.8 ppb (9) N/A 21.0 ppb (19) N/A 4.0 ppb (6) N/A N/A N/A N/A 29.0
 
May 17, 2019, 11 a.m. 32.6 ppb (30) 10.2 ppb (9) N/A 22.0 ppb (20) N/A 1.0 ppb (1) N/A N/A N/A N/A 30.0
 
May 17, 2019, 10 a.m. 33.3 ppb (31) 8.7 ppb (8) N/A 24.0 ppb (22) N/A 4.0 ppb (6) N/A N/A N/A N/A 31.0
 
May 17, 2019, 9 a.m. 19.7 ppb (18) 3.2 ppb (3) N/A 16.0 ppb (15) N/A 1.0 ppb (1) N/A N/A N/A N/A 18.0
 
May 17, 2019, 8 a.m. 27.1 ppb (25) 4.5 ppb (4) N/A 23.0 ppb (21) N/A 1.0 ppb (1) N/A N/A N/A N/A 25.0
 
May 17, 2019, 7 a.m. 8.6 ppb (8) 1.0 ppb (1) N/A 8.0 ppb (7) N/A 1.0 ppb (1) N/A N/A N/A N/A 8.0
 
May 17, 2019, 6 a.m. 7.9 ppb (7) 0.9 ppb (1) N/A 7.0 ppb (6) N/A 1.0 ppb (1) N/A N/A N/A N/A 7.0
 
May 17, 2019, 5 a.m. 6.3 ppb (6) 0.4 ppb (0) N/A 6.0 ppb (6) N/A 2.0 ppb (3) N/A N/A N/A N/A 6.0
 
May 17, 2019, 4 a.m. 8.9 ppb (8) 0.9 ppb (1) N/A 8.0 ppb (7) N/A 2.0 ppb (3) N/A N/A N/A N/A 8.0
 
May 17, 2019, 3 a.m. 10.8 ppb (10) 1.9 ppb (2) N/A 9.0 ppb (8) N/A 2.0 ppb (3) N/A N/A N/A N/A 10.0
 
May 17, 2019, 2 a.m. 10.8 ppb (10) 2.7 ppb (3) N/A 8.0 ppb (7) N/A 2.0 ppb (3) N/A N/A N/A N/A 10.0
 
May 17, 2019, 1 a.m. 7.6 ppb (7) 0.7 ppb (1) N/A 7.0 ppb (6) N/A 3.0 ppb (4) N/A N/A N/A N/A 7.0
 
May 17, 2019, midnight 12.4 ppb (11) 3.4 ppb (3) N/A 9.0 ppb (8) N/A 1.0 ppb (1) N/A N/A N/A N/A 11.0
 
May 16, 2019, 11 p.m. 12.2 ppb (11) 4.2 ppb (4) N/A 8.0 ppb (7) N/A 1.0 ppb (1) N/A N/A N/A N/A 11.0
 
May 16, 2019, 10 p.m. 13.2 ppb (12) 5.0 ppb (5) N/A 8.0 ppb (7) N/A 1.0 ppb (1) N/A N/A N/A N/A 12.0
 
May 16, 2019, 9 p.m. 13.6 ppb (13) 5.2 ppb (5) N/A 8.0 ppb (7) N/A 3.0 ppb (4) N/A N/A N/A N/A 13.0
 
May 16, 2019, 8 p.m. 15.1 ppb (14) 5.9 ppb (5) N/A 9.0 ppb (8) N/A 3.0 ppb (4) N/A N/A N/A N/A 14.0
 
May 16, 2019, 7 p.m. 15.7 ppb (15) 6.0 ppb (6) N/A 10.0 ppb (9) N/A 3.0 ppb (4) N/A N/A N/A N/A 15.0
 
May 16, 2019, 6 p.m. 17.3 ppb (16) 6.2 ppb (6) N/A 11.0 ppb (10) N/A 5.0 ppb (7) N/A N/A N/A N/A 16.0
 
May 16, 2019, 5 p.m. 18.8 ppb (17) 7.0 ppb (6) N/A 12.0 ppb (11) N/A 7.0 ppb (10) N/A N/A N/A N/A 17.0
 
May 16, 2019, 4 p.m. 16.3 ppb (15) 6.8 ppb (6) N/A 9.0 ppb (8) N/A 4.0 ppb (6) N/A N/A N/A N/A 15.0
 
May 16, 2019, 3 p.m. 17.3 ppb (16) 7.0 ppb (6) N/A 10.0 ppb (9) N/A 4.0 ppb (6) N/A N/A N/A N/A 16.0
 
May 16, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A
May 16, 2019, 1 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) N/A N/A N/A N/A 3.0
 
May 16, 2019, noon 28.9 ppb (27) 15.1 ppb (14) N/A 14.0 ppb (13) N/A 1.0 ppb (1) N/A N/A N/A N/A 27.0
 
May 16, 2019, 11 a.m. 29.8 ppb (28) 14.9 ppb (14) N/A 15.0 ppb (14) N/A 1.0 ppb (1) N/A N/A N/A N/A 28.0