AQSQID: 410670005

Site Name: Portland Near Road

Location: Tualatin, OR

Reporting: True, Located: True

Current AQI: 48.0

Tualatin OR, US: 45.39916, -122.7455

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
July 22, 2019, 7 p.m. 22.4 ppb (21) 11.7 ppb (11) N/A 11.0 ppb (10) N/A N/A 28.0 ppb (22) 4.3 ppb (48) N/A 5.9 μg/m3 (25) 48.0
 
July 22, 2019, 6 p.m. 20.6 ppb (19) 11.3 ppb (10) N/A 9.0 ppb (8) N/A N/A 23.0 ppb (18) 4.8 ppb (53) N/A 5.6 μg/m3 (23) 53.0
 
July 22, 2019, 5 p.m. 18.0 ppb (17) 9.9 ppb (9) N/A 8.0 ppb (7) N/A N/A 20.0 ppb (15) N/A N/A 5.0 μg/m3 (21) 21.0
 
July 22, 2019, 4 p.m. 17.1 ppb (16) 8.4 ppb (8) N/A 9.0 ppb (8) N/A N/A 15.0 ppb (12) N/A N/A 4.8 μg/m3 (20) 20.0
 
July 22, 2019, 3 p.m. 13.0 ppb (12) 5.5 ppb (5) N/A 8.0 ppb (7) N/A N/A 13.0 ppb (10) N/A N/A 4.7 μg/m3 (20) 20.0
 
July 22, 2019, 2 p.m. 10.0 ppb (9) 2.6 ppb (2) N/A 7.0 ppb (6) N/A N/A 11.0 ppb (8) N/A N/A 4.9 μg/m3 (20) 20.0
 
July 22, 2019, 1 p.m. 9.7 ppb (9) 1.9 ppb (2) N/A 8.0 ppb (7) N/A N/A 10.0 ppb (8) N/A N/A 5.0 μg/m3 (21) 21.0
 
July 22, 2019, noon 8.2 ppb (8) 1.3 ppb (1) N/A 7.0 ppb (6) N/A N/A 12.0 ppb (9) N/A N/A 4.8 μg/m3 (20) 20.0
 
July 22, 2019, 11 a.m. 7.3 ppb (7) 0.5 ppb (0) N/A 7.0 ppb (6) N/A N/A 14.0 ppb (11) N/A N/A 4.7 μg/m3 (20) 20.0
 
July 22, 2019, 10 a.m. 7.5 ppb (7) 0.1 ppb (0) N/A 7.0 ppb (6) N/A N/A 17.0 ppb (13) N/A N/A 4.6 μg/m3 (19) 19.0
 
July 22, 2019, 9 a.m. 11.0 ppb (10) 1.8 ppb (2) N/A 9.0 ppb (8) N/A N/A 19.0 ppb (15) N/A N/A 4.4 μg/m3 (18) 18.0
 
July 22, 2019, 8 a.m. 12.9 ppb (12) 2.5 ppb (2) N/A 10.0 ppb (9) N/A N/A 21.0 ppb (16) N/A N/A 4.6 μg/m3 (19) 19.0
 
July 22, 2019, 7 a.m. 13.0 ppb (12) 2.1 ppb (2) N/A 11.0 ppb (10) N/A N/A 24.0 ppb (18) N/A N/A 5.0 μg/m3 (21) 21.0
 
July 22, 2019, 6 a.m. 14.5 ppb (13) 3.7 ppb (3) N/A 11.0 ppb (10) N/A N/A 27.0 ppb (21) N/A N/A 5.1 μg/m3 (21) 21.0
 
July 22, 2019, 5 a.m. 14.9 ppb (14) 5.2 ppb (5) N/A 10.0 ppb (9) N/A N/A 26.0 ppb (20) N/A N/A 5.6 μg/m3 (23) 23.0
 
July 22, 2019, 4 a.m. 16.1 ppb (15) 6.2 ppb (6) N/A 10.0 ppb (9) N/A N/A 23.0 ppb (18) N/A N/A 6.2 μg/m3 (26) 26.0
 
July 22, 2019, 3 a.m. 19.4 ppb (18) 6.5 ppb (6) N/A 13.0 ppb (12) N/A N/A 29.0 ppb (22) N/A N/A 6.6 μg/m3 (28) 28.0
 
July 22, 2019, 2 a.m. 20.1 ppb (19) 6.6 ppb (6) N/A 14.0 ppb (13) N/A N/A 37.0 ppb (28) N/A N/A 6.6 μg/m3 (28) 28.0
 
July 22, 2019, 1 a.m. 16.0 ppb (15) 5.5 ppb (5) N/A 10.0 ppb (9) N/A N/A 42.0 ppb (32) N/A N/A 6.2 μg/m3 (26) 32.0
 
July 22, 2019, midnight 11.5 ppb (11) 3.8 ppb (4) N/A 8.0 ppb (7) N/A N/A 44.0 ppb (34) N/A N/A 6.0 μg/m3 (25) 34.0
 
July 21, 2019, 11 p.m. 9.4 ppb (9) 3.3 ppb (3) N/A 6.0 ppb (6) N/A N/A 45.0 ppb (35) N/A N/A 6.1 μg/m3 (25) 35.0
 
July 21, 2019, 10 p.m. 9.7 ppb (9) 3.5 ppb (3) N/A 6.0 ppb (6) N/A N/A 45.0 ppb (35) N/A N/A 6.3 μg/m3 (26) 35.0
 
July 21, 2019, 9 p.m. 11.3 ppb (10) 4.1 ppb (4) N/A 7.0 ppb (6) N/A N/A 44.0 ppb (34) N/A N/A 6.6 μg/m3 (28) 34.0
 
July 21, 2019, 8 p.m. 10.3 ppb (10) 3.9 ppb (4) N/A 6.0 ppb (6) N/A N/A 42.0 ppb (32) N/A N/A 6.9 μg/m3 (29) 32.0
 
July 21, 2019, 7 p.m. 9.4 ppb (9) 3.6 ppb (3) N/A 6.0 ppb (6) N/A N/A 37.0 ppb (28) N/A N/A 7.0 μg/m3 (29) 29.0
 
July 21, 2019, 6 p.m. 10.8 ppb (10) 4.5 ppb (4) N/A 6.0 ppb (6) N/A N/A 30.0 ppb (23) N/A N/A 6.9 μg/m3 (29) 29.0
 
July 21, 2019, 5 p.m. 9.5 ppb (9) 4.2 ppb (4) N/A 5.0 ppb (5) N/A N/A 24.0 ppb (18) N/A N/A 6.6 μg/m3 (28) 28.0
 
July 21, 2019, 4 p.m. 8.8 ppb (8) 4.2 ppb (4) N/A 5.0 ppb (5) N/A N/A 20.0 ppb (15) 12.7 ppb (153) N/A 6.5 μg/m3 (27) 153.0
 
July 21, 2019, 3 p.m. 9.0 ppb (8) 4.1 ppb (4) N/A 5.0 ppb (5) N/A N/A 15.0 ppb (12) N/A N/A 6.4 μg/m3 (27) 27.0
 
July 21, 2019, 2 p.m. 7.9 ppb (7) 2.2 ppb (2) N/A 6.0 ppb (6) N/A N/A 11.0 ppb (8) N/A N/A 6.6 μg/m3 (28) 28.0
 
July 21, 2019, 1 p.m. 7.5 ppb (7) 1.0 ppb (1) N/A 7.0 ppb (6) N/A N/A 8.0 ppb (6) N/A N/A 6.9 μg/m3 (29) 29.0
 
July 21, 2019, noon 7.0 ppb (6) 0.2 ppb (0) N/A 7.0 ppb (6) N/A N/A 10.0 ppb (8) N/A N/A 7.0 μg/m3 (29) 29.0
 
July 21, 2019, 11 a.m. 7.4 ppb (7) 0.1 ppb (0) N/A 7.0 ppb (6) N/A N/A 11.0 ppb (8) N/A N/A 7.1 μg/m3 (30) 30.0
 
July 21, 2019, 10 a.m. 7.9 ppb (7) 0.1 ppb (0) N/A 8.0 ppb (7) N/A N/A 12.0 ppb (9) 8.1 ppb (86) N/A 7.4 μg/m3 (31) 86.0
 
July 21, 2019, 9 a.m. 8.6 ppb (8) 0.1 ppb (0) N/A 8.0 ppb (7) N/A N/A 13.0 ppb (10) N/A N/A 8.5 μg/m3 (35) 35.0
 
July 21, 2019, 8 a.m. 9.4 ppb (9) 0.0 ppb (0) N/A 9.0 ppb (8) N/A N/A 16.0 ppb (12) N/A N/A 9.0 μg/m3 (38) 38.0
 
July 21, 2019, 7 a.m. 12.4 ppb (11) 0.8 ppb (1) N/A 12.0 ppb (11) N/A N/A 19.0 ppb (15) N/A N/A 7.7 μg/m3 (32) 32.0
 
July 21, 2019, 6 a.m. 16.5 ppb (15) 2.6 ppb (2) N/A 14.0 ppb (13) N/A N/A 25.0 ppb (19) N/A N/A 6.1 μg/m3 (25) 25.0
 
July 21, 2019, 5 a.m. 16.9 ppb (16) 4.1 ppb (4) N/A 13.0 ppb (12) N/A N/A 32.0 ppb (25) N/A N/A 5.4 μg/m3 (23) 25.0
 
July 21, 2019, 4 a.m. 15.3 ppb (14) 4.7 ppb (4) N/A 11.0 ppb (10) N/A N/A 36.0 ppb (28) N/A N/A 5.7 μg/m3 (24) 28.0
 
July 21, 2019, 3 a.m. 14.8 ppb (14) 4.9 ppb (5) N/A 10.0 ppb (9) N/A N/A 37.0 ppb (28) N/A N/A 5.8 μg/m3 (24) 28.0
 
July 21, 2019, 2 a.m. 15.5 ppb (14) 5.8 ppb (5) N/A 10.0 ppb (9) N/A N/A 37.0 ppb (28) N/A N/A 6.0 μg/m3 (25) 28.0
 
July 21, 2019, 1 a.m. 11.0 ppb (10) 4.4 ppb (4) N/A 7.0 ppb (6) N/A N/A 40.0 ppb (31) N/A N/A 6.7 μg/m3 (28) 31.0
 
July 21, 2019, midnight 10.2 ppb (9) 4.1 ppb (4) N/A 6.0 ppb (6) N/A N/A 40.0 ppb (31) N/A N/A 7.1 μg/m3 (30) 31.0
 
July 20, 2019, 11 p.m. 12.5 ppb (12) 5.3 ppb (5) N/A 7.0 ppb (6) N/A N/A 39.0 ppb (30) N/A N/A 8.9 μg/m3 (37) 37.0
 
July 20, 2019, 10 p.m. 9.2 ppb (9) 3.8 ppb (4) N/A 5.0 ppb (5) N/A N/A 42.0 ppb (32) N/A N/A 9.8 μg/m3 (41) 41.0
 
July 20, 2019, 9 p.m. 13.5 ppb (12) 6.8 ppb (6) N/A 7.0 ppb (6) N/A N/A 38.0 ppb (29) N/A N/A 7.2 μg/m3 (30) 30.0
 
July 20, 2019, 8 p.m. 19.0 ppb (18) 10.5 ppb (10) N/A 9.0 ppb (8) N/A N/A 30.0 ppb (23) N/A N/A 5.3 μg/m3 (22) 23.0
 
July 20, 2019, 7 p.m. 19.2 ppb (18) 10.8 ppb (10) N/A 8.0 ppb (7) N/A N/A 26.0 ppb (20) N/A N/A 5.3 μg/m3 (22) 22.0
 
July 20, 2019, 6 p.m. 17.7 ppb (16) 9.9 ppb (9) N/A 8.0 ppb (7) N/A N/A 22.0 ppb (17) N/A N/A 5.3 μg/m3 (22) 22.0
 
July 20, 2019, 5 p.m. 18.5 ppb (17) 10.9 ppb (10) N/A 8.0 ppb (7) N/A N/A 18.0 ppb (14) N/A N/A 5.1 μg/m3 (21) 21.0
 
July 20, 2019, 4 p.m. 24.5 ppb (23) 15.4 ppb (14) N/A 9.0 ppb (8) N/A N/A 14.0 ppb (11) N/A N/A 5.0 μg/m3 (21) 23.0
 
July 20, 2019, 3 p.m. 29.0 ppb (27) 18.9 ppb (18) N/A 10.0 ppb (9) N/A N/A 9.0 ppb (7) N/A N/A 5.2 μg/m3 (22) 27.0
 
July 20, 2019, 2 p.m. 21.5 ppb (20) 12.8 ppb (12) N/A 9.0 ppb (8) N/A N/A 4.0 ppb (3) N/A N/A 5.4 μg/m3 (23) 23.0
 
July 20, 2019, 1 p.m. 13.1 ppb (12) 5.0 ppb (5) N/A 8.0 ppb (7) N/A N/A 2.0 ppb (2) N/A N/A 5.1 μg/m3 (21) 21.0
 
July 20, 2019, noon 11.2 ppb (10) 2.5 ppb (2) N/A 9.0 ppb (8) N/A N/A 2.0 ppb (2) 6.8 ppb (73) N/A 5.0 μg/m3 (21) 73.0
 
July 20, 2019, 11 a.m. 9.5 ppb (9) 1.2 ppb (1) N/A 8.0 ppb (7) N/A N/A 3.0 ppb (2) N/A N/A 5.2 μg/m3 (22) 22.0
 
July 20, 2019, 10 a.m. 9.2 ppb (9) 1.1 ppb (1) N/A 8.0 ppb (7) N/A N/A 5.0 ppb (4) N/A N/A 5.3 μg/m3 (22) 22.0
 
July 20, 2019, 9 a.m. 11.3 ppb (10) 2.8 ppb (3) N/A 8.0 ppb (7) N/A N/A 9.0 ppb (7) N/A N/A 5.0 μg/m3 (21) 21.0
 
July 20, 2019, 8 a.m. 14.5 ppb (13) 6.2 ppb (6) N/A 8.0 ppb (7) N/A N/A 11.0 ppb (8) N/A N/A 4.6 μg/m3 (19) 19.0
 
July 20, 2019, 7 a.m. 13.8 ppb (13) 6.6 ppb (6) N/A 7.0 ppb (6) N/A N/A 14.0 ppb (11) 4.1 ppb (46) N/A 4.6 μg/m3 (19) 46.0
 
July 20, 2019, 6 a.m. 11.7 ppb (11) 5.9 ppb (5) N/A 6.0 ppb (6) N/A N/A 17.0 ppb (13) N/A N/A 4.7 μg/m3 (20) 20.0
 
July 20, 2019, 5 a.m. 17.1 ppb (16) 7.7 ppb (7) N/A 9.0 ppb (8) N/A N/A 18.0 ppb (14) N/A N/A 4.9 μg/m3 (20) 20.0
 
July 20, 2019, 4 a.m. 19.9 ppb (18) 8.1 ppb (8) N/A 12.0 ppb (11) N/A N/A 23.0 ppb (18) N/A N/A 5.0 μg/m3 (21) 21.0
 
July 20, 2019, 3 a.m. 16.7 ppb (15) 7.1 ppb (7) N/A 10.0 ppb (9) N/A N/A 28.0 ppb (22) N/A N/A 5.0 μg/m3 (21) 22.0
 
July 20, 2019, 2 a.m. 16.5 ppb (15) 8.1 ppb (8) N/A 8.0 ppb (7) N/A N/A 26.0 ppb (20) N/A N/A 4.6 μg/m3 (19) 20.0
 
July 20, 2019, 1 a.m. 16.2 ppb (15) 8.6 ppb (8) N/A 8.0 ppb (7) N/A N/A 25.0 ppb (19) N/A N/A 4.3 μg/m3 (18) 19.0
 
July 20, 2019, midnight 18.4 ppb (17) 9.9 ppb (9) N/A 8.0 ppb (7) N/A N/A 25.0 ppb (19) N/A N/A 4.4 μg/m3 (18) 19.0
 
July 19, 2019, 11 p.m. 20.6 ppb (19) 11.7 ppb (11) N/A 9.0 ppb (8) N/A N/A 25.0 ppb (19) N/A N/A 4.5 μg/m3 (19) 19.0
 
July 19, 2019, 10 p.m. 19.8 ppb (18) 12.1 ppb (11) N/A 8.0 ppb (7) N/A N/A 25.0 ppb (19) N/A N/A 4.5 μg/m3 (19) 19.0
 
July 19, 2019, 9 p.m. 22.7 ppb (21) 13.8 ppb (13) N/A 9.0 ppb (8) N/A N/A 24.0 ppb (18) N/A N/A 4.7 μg/m3 (20) 21.0
 
July 19, 2019, 8 p.m. 29.2 ppb (27) 18.3 ppb (17) N/A 11.0 ppb (10) N/A N/A 22.0 ppb (17) N/A N/A 4.9 μg/m3 (20) 27.0
 
July 19, 2019, 7 p.m. 34.1 ppb (32) 21.9 ppb (20) N/A 12.0 ppb (11) N/A N/A 18.0 ppb (14) N/A N/A 5.1 μg/m3 (21) 32.0
 
July 19, 2019, 6 p.m. 25.6 ppb (24) 15.7 ppb (15) N/A 10.0 ppb (9) N/A N/A 18.0 ppb (14) N/A N/A 5.0 μg/m3 (21) 24.0
 
July 19, 2019, 5 p.m. 15.3 ppb (14) 8.8 ppb (8) N/A 7.0 ppb (6) N/A N/A 19.0 ppb (15) N/A N/A 5.0 μg/m3 (21) 21.0
 
July 19, 2019, 4 p.m. 43.2 ppb (40) 30.0 ppb (28) N/A 13.0 ppb (12) N/A N/A 13.0 ppb (10) N/A N/A 5.8 μg/m3 (24) 40.0
 
July 19, 2019, 3 p.m. 47.6 ppb (44) 31.8 ppb (29) N/A 16.0 ppb (15) N/A N/A 6.0 ppb (5) N/A N/A 6.4 μg/m3 (27) 44.0
 
July 19, 2019, 2 p.m. 46.9 ppb (43) 31.7 ppb (29) N/A 15.0 ppb (14) N/A N/A 3.0 ppb (2) N/A N/A 6.3 μg/m3 (26) 43.0
 
July 19, 2019, 1 p.m. 34.3 ppb (32) 21.9 ppb (20) N/A 12.0 ppb (11) N/A N/A 3.0 ppb (2) N/A N/A 5.6 μg/m3 (23) 32.0
 
July 19, 2019, noon 11.8 ppb (11) 2.9 ppb (3) N/A 9.0 ppb (8) N/A N/A 6.0 ppb (5) N/A N/A 5.0 μg/m3 (21) 21.0
 
July 19, 2019, 11 a.m. 15.3 ppb (14) 5.9 ppb (5) N/A 9.0 ppb (8) N/A N/A 9.0 ppb (7) N/A N/A 5.0 μg/m3 (21) 21.0
 
July 19, 2019, 10 a.m. 19.6 ppb (18) 9.1 ppb (8) N/A 10.0 ppb (9) N/A N/A 12.0 ppb (9) N/A N/A 5.0 μg/m3 (21) 21.0
 
July 19, 2019, 9 a.m. 15.6 ppb (14) 7.0 ppb (6) N/A 9.0 ppb (8) N/A N/A 15.0 ppb (12) N/A N/A 4.9 μg/m3 (20) 20.0
 
July 19, 2019, 8 a.m. 10.9 ppb (10) 4.9 ppb (5) N/A 6.0 ppb (6) N/A N/A 18.0 ppb (14) N/A N/A 4.9 μg/m3 (20) 20.0
 
July 19, 2019, 7 a.m. 10.0 ppb (9) 4.4 ppb (4) N/A 6.0 ppb (6) N/A N/A 19.0 ppb (15) N/A N/A 4.8 μg/m3 (20) 20.0
 
July 19, 2019, 6 a.m. 10.0 ppb (9) 4.7 ppb (4) N/A 5.0 ppb (5) N/A N/A 22.0 ppb (17) N/A N/A 4.7 μg/m3 (20) 20.0
 
July 19, 2019, 5 a.m. 10.6 ppb (10) 5.5 ppb (5) N/A 5.0 ppb (5) N/A N/A 23.0 ppb (18) N/A N/A 4.7 μg/m3 (20) 20.0
 
July 19, 2019, 4 a.m. 12.7 ppb (12) 6.8 ppb (6) N/A 6.0 ppb (6) N/A N/A 23.0 ppb (18) N/A N/A 4.6 μg/m3 (19) 19.0
 
July 19, 2019, 3 a.m. 14.7 ppb (14) 8.4 ppb (8) N/A 6.0 ppb (6) N/A N/A 23.0 ppb (18) N/A N/A 4.4 μg/m3 (18) 18.0
 
July 19, 2019, 2 a.m. 16.4 ppb (15) 9.1 ppb (8) N/A 7.0 ppb (6) N/A N/A 24.0 ppb (18) N/A N/A 4.4 μg/m3 (18) 18.0
 
July 19, 2019, 1 a.m. 18.6 ppb (17) 10.0 ppb (9) N/A 9.0 ppb (8) N/A N/A 24.0 ppb (18) N/A N/A 4.6 μg/m3 (19) 19.0
 
July 19, 2019, midnight 22.1 ppb (20) 11.8 ppb (11) N/A 10.0 ppb (9) N/A N/A 25.0 ppb (19) N/A N/A 4.8 μg/m3 (20) 20.0
 
July 18, 2019, 11 p.m. 24.3 ppb (23) 13.3 ppb (12) N/A 11.0 ppb (10) N/A N/A 26.0 ppb (20) N/A N/A 4.8 μg/m3 (20) 23.0
 
July 18, 2019, 10 p.m. 21.6 ppb (20) 11.9 ppb (11) N/A 10.0 ppb (9) N/A N/A 27.0 ppb (21) N/A N/A 4.6 μg/m3 (19) 21.0
 
July 18, 2019, 9 p.m. 17.5 ppb (16) 9.2 ppb (9) N/A 8.0 ppb (7) N/A N/A 29.0 ppb (22) N/A N/A 4.3 μg/m3 (18) 22.0
 
July 18, 2019, 8 p.m. 24.4 ppb (23) 13.6 ppb (13) N/A 11.0 ppb (10) N/A N/A 26.0 ppb (20) N/A N/A 4.2 μg/m3 (18) 23.0
 
July 18, 2019, 7 p.m. 29.6 ppb (27) 17.1 ppb (16) N/A 13.0 ppb (12) N/A N/A 24.0 ppb (18) N/A N/A 4.3 μg/m3 (18) 27.0
 
July 18, 2019, 6 p.m. 30.1 ppb (28) 17.8 ppb (16) N/A 12.0 ppb (11) N/A N/A 23.0 ppb (18) N/A N/A 4.3 μg/m3 (18) 28.0
 
July 18, 2019, 5 p.m. 33.4 ppb (31) 20.7 ppb (19) N/A 13.0 ppb (12) N/A N/A 21.0 ppb (16) N/A N/A 4.3 μg/m3 (18) 31.0
 
July 18, 2019, 4 p.m. 38.3 ppb (35) 24.8 ppb (23) N/A 14.0 ppb (13) N/A N/A 18.0 ppb (14) N/A N/A 4.5 μg/m3 (19) 35.0
 
July 18, 2019, 3 p.m. 50.8 ppb (47) 35.4 ppb (33) N/A 16.0 ppb (15) N/A N/A 12.0 ppb (9) N/A N/A 4.7 μg/m3 (20) 47.0
 
July 18, 2019, 2 p.m. 55.8 ppb (52) 38.9 ppb (36) N/A 17.0 ppb (16) N/A N/A 10.0 ppb (8) N/A N/A 4.6 μg/m3 (19) 52.0
 
July 18, 2019, 1 p.m. 46.1 ppb (43) 30.0 ppb (28) N/A 16.0 ppb (15) N/A N/A 10.0 ppb (8) N/A N/A 4.1 μg/m3 (17) 43.0
 
July 18, 2019, noon 28.4 ppb (26) 16.9 ppb (16) N/A 12.0 ppb (11) N/A N/A 13.0 ppb (10) N/A N/A 3.6 μg/m3 (15) 26.0
 
July 18, 2019, 11 a.m. 15.0 ppb (14) 7.7 ppb (7) N/A 7.0 ppb (6) N/A N/A 14.0 ppb (11) N/A N/A 3.1 μg/m3 (13) 14.0
 
July 18, 2019, 10 a.m. 9.7 ppb (9) 4.9 ppb (5) N/A 5.0 ppb (5) N/A N/A 15.0 ppb (12) N/A N/A 2.8 μg/m3 (12) 12.0
 
July 18, 2019, 9 a.m. 8.2 ppb (8) 4.8 ppb (4) N/A 3.0 ppb (3) N/A N/A 11.0 ppb (8) N/A N/A 3.5 μg/m3 (15) 15.0
 
July 18, 2019, 8 a.m. 12.0 ppb (11) 7.2 ppb (7) N/A 5.0 ppb (5) N/A N/A 5.0 ppb (4) N/A N/A 3.2 μg/m3 (13) 13.0
 
July 18, 2019, 7 a.m. 15.6 ppb (14) 9.3 ppb (9) N/A 6.0 ppb (6) N/A N/A 5.0 ppb (4) N/A N/A 1.9 μg/m3 (8) 14.0
 
July 18, 2019, 6 a.m. 13.7 ppb (13) 8.4 ppb (8) N/A 5.0 ppb (5) N/A N/A 7.0 ppb (5) N/A N/A 2.0 μg/m3 (8) 13.0
 
July 18, 2019, 5 a.m. 14.1 ppb (13) 8.2 ppb (8) N/A 6.0 ppb (6) N/A N/A 8.0 ppb (6) 3.0 ppb (33) N/A 2.1 μg/m3 (9) 33.0
 
July 18, 2019, 4 a.m. 19.0 ppb (18) 11.4 ppb (11) N/A 8.0 ppb (7) N/A N/A 7.0 ppb (5) N/A N/A 2.3 μg/m3 (10) 18.0
 
July 18, 2019, 3 a.m. 17.9 ppb (17) 10.4 ppb (10) N/A 8.0 ppb (7) N/A N/A 8.0 ppb (6) N/A N/A 2.5 μg/m3 (10) 17.0
 
July 18, 2019, 2 a.m. 18.5 ppb (17) 11.0 ppb (10) N/A 8.0 ppb (7) N/A N/A 9.0 ppb (7) N/A N/A 2.7 μg/m3 (11) 17.0
 
July 18, 2019, 1 a.m. 22.0 ppb (20) 14.1 ppb (13) N/A 8.0 ppb (7) N/A N/A 10.0 ppb (8) N/A N/A 2.8 μg/m3 (12) 20.0
 
July 18, 2019, midnight 27.6 ppb (26) 18.2 ppb (17) N/A 9.0 ppb (8) N/A N/A 10.0 ppb (8) N/A N/A 3.0 μg/m3 (12) 26.0
 
July 17, 2019, 11 p.m. 29.5 ppb (27) 20.0 ppb (19) N/A 9.0 ppb (8) N/A N/A 10.0 ppb (8) N/A N/A 3.2 μg/m3 (13) 27.0
 
July 17, 2019, 10 p.m. 29.9 ppb (28) 19.7 ppb (18) N/A 10.0 ppb (9) N/A N/A 11.0 ppb (8) N/A N/A 3.6 μg/m3 (15) 28.0
 
July 17, 2019, 9 p.m. 33.7 ppb (31) 20.5 ppb (19) N/A 13.0 ppb (12) N/A N/A 13.0 ppb (10) N/A N/A 4.0 μg/m3 (17) 31.0
 
July 17, 2019, 8 p.m. 27.4 ppb (25) 15.6 ppb (14) N/A 12.0 ppb (11) N/A N/A 17.0 ppb (13) N/A N/A 4.5 μg/m3 (19) 25.0
 
July 17, 2019, 7 p.m. 19.4 ppb (18) 11.3 ppb (10) N/A 8.0 ppb (7) N/A N/A 19.0 ppb (15) N/A N/A 5.0 μg/m3 (21) 21.0
 
July 17, 2019, 6 p.m. 20.8 ppb (19) 12.7 ppb (12) N/A 8.0 ppb (7) N/A N/A 17.0 ppb (13) N/A N/A 5.5 μg/m3 (23) 23.0
 
July 17, 2019, 5 p.m. 24.3 ppb (23) 15.1 ppb (14) N/A 9.0 ppb (8) N/A N/A 14.0 ppb (11) N/A N/A 5.4 μg/m3 (23) 23.0
 
July 17, 2019, 4 p.m. 23.9 ppb (22) 14.4 ppb (13) N/A 10.0 ppb (9) N/A N/A 12.0 ppb (9) N/A N/A 4.8 μg/m3 (20) 22.0
 
July 17, 2019, 3 p.m. 22.7 ppb (21) 12.0 ppb (11) N/A 11.0 ppb (10) N/A N/A 10.0 ppb (8) N/A N/A 4.5 μg/m3 (19) 21.0
 
July 17, 2019, 2 p.m. 24.5 ppb (23) 12.0 ppb (11) N/A 13.0 ppb (12) N/A N/A 7.0 ppb (5) N/A N/A 4.5 μg/m3 (19) 23.0
 
July 17, 2019, 1 p.m. 28.9 ppb (27) 15.9 ppb (15) N/A 13.0 ppb (12) N/A N/A 6.0 ppb (5) N/A N/A 4.3 μg/m3 (18) 27.0
 
July 17, 2019, noon 18.2 ppb (17) 9.5 ppb (9) N/A 9.0 ppb (8) N/A N/A 9.0 ppb (7) 5.0 ppb (55) N/A 4.1 μg/m3 (17) 55.0
 
July 17, 2019, 11 a.m. 4.9 ppb (5) 0.1 ppb (0) N/A 5.0 ppb (5) N/A N/A 12.0 ppb (9) N/A N/A 4.2 μg/m3 (18) 18.0
 
July 17, 2019, 10 a.m. 11.4 ppb (11) 3.4 ppb (3) N/A 8.0 ppb (7) N/A N/A 10.0 ppb (8) N/A N/A 4.3 μg/m3 (18) 18.0
 
July 17, 2019, 9 a.m. 14.8 ppb (14) 5.0 ppb (5) N/A 10.0 ppb (9) N/A N/A 11.0 ppb (8) N/A N/A 4.0 μg/m3 (17) 17.0
 
July 17, 2019, 8 a.m. 13.0 ppb (12) 4.1 ppb (4) N/A 9.0 ppb (8) N/A N/A 14.0 ppb (11) N/A N/A 3.7 μg/m3 (15) 15.0
 
July 17, 2019, 7 a.m. 12.1 ppb (11) 4.6 ppb (4) N/A 7.0 ppb (6) N/A N/A 18.0 ppb (14) N/A N/A 3.5 μg/m3 (15) 15.0
 
July 17, 2019, 6 a.m. 12.1 ppb (11) 5.3 ppb (5) N/A 7.0 ppb (6) N/A N/A 19.0 ppb (15) 9.8 ppb (105) N/A 3.4 μg/m3 (14) 105.0
 
July 17, 2019, 5 a.m. 14.4 ppb (13) 7.0 ppb (6) N/A 7.0 ppb (6) N/A N/A 18.0 ppb (14) N/A N/A 3.5 μg/m3 (15) 15.0
 
July 17, 2019, 4 a.m. 15.9 ppb (15) 9.1 ppb (8) N/A 7.0 ppb (6) N/A N/A 17.0 ppb (13) N/A N/A 4.2 μg/m3 (18) 18.0
 
July 17, 2019, 3 a.m. 17.4 ppb (16) 10.1 ppb (9) N/A 7.0 ppb (6) N/A N/A 15.0 ppb (12) N/A N/A 4.6 μg/m3 (19) 19.0
 
July 17, 2019, 2 a.m. 20.2 ppb (19) 11.6 ppb (11) N/A 9.0 ppb (8) N/A N/A 16.0 ppb (12) N/A N/A 4.8 μg/m3 (20) 20.0
 
July 17, 2019, 1 a.m. 21.8 ppb (20) 12.2 ppb (11) N/A 10.0 ppb (9) N/A N/A 19.0 ppb (15) N/A N/A 5.6 μg/m3 (23) 23.0
 
July 17, 2019, midnight 20.1 ppb (19) 10.3 ppb (10) N/A 10.0 ppb (9) N/A N/A 23.0 ppb (18) N/A N/A 5.8 μg/m3 (24) 24.0
 
July 16, 2019, 11 p.m. 15.9 ppb (15) 7.7 ppb (7) N/A 8.0 ppb (7) N/A N/A 26.0 ppb (20) N/A N/A 5.2 μg/m3 (22) 22.0
 
July 16, 2019, 10 p.m. 12.9 ppb (12) 6.4 ppb (6) N/A 7.0 ppb (6) N/A N/A 27.0 ppb (21) N/A N/A 4.7 μg/m3 (20) 21.0
 
July 16, 2019, 9 p.m. 15.2 ppb (14) 8.2 ppb (8) N/A 7.0 ppb (6) N/A N/A 25.0 ppb (19) N/A N/A 4.0 μg/m3 (17) 19.0
 
July 16, 2019, 8 p.m. 19.6 ppb (18) 11.8 ppb (11) N/A 8.0 ppb (7) N/A N/A 22.0 ppb (17) N/A N/A 3.5 μg/m3 (15) 18.0
 
July 16, 2019, 7 p.m. 18.1 ppb (17) 10.8 ppb (10) N/A 7.0 ppb (6) N/A N/A 19.0 ppb (15) N/A N/A 3.4 μg/m3 (14) 17.0
 
July 16, 2019, 6 p.m. 22.1 ppb (20) 14.3 ppb (13) N/A 8.0 ppb (7) N/A N/A 15.0 ppb (12) N/A N/A 3.4 μg/m3 (14) 20.0
 
July 16, 2019, 5 p.m. 18.3 ppb (17) 11.9 ppb (11) N/A 6.0 ppb (6) N/A N/A 14.0 ppb (11) N/A N/A 3.1 μg/m3 (13) 17.0
 
July 16, 2019, 4 p.m. 13.8 ppb (13) 8.4 ppb (8) N/A 5.0 ppb (5) N/A N/A 14.0 ppb (11) N/A N/A 3.1 μg/m3 (13) 13.0
 
July 16, 2019, 3 p.m. 14.4 ppb (13) 8.1 ppb (8) N/A 6.0 ppb (6) N/A N/A 9.0 ppb (7) 0.4 ppb (4) N/A 3.5 μg/m3 (15) 15.0
 
July 16, 2019, 2 p.m. 10.0 ppb (9) 3.6 ppb (3) N/A 6.0 ppb (6) N/A N/A 6.0 ppb (5) N/A N/A 3.6 μg/m3 (15) 15.0
 
July 16, 2019, 1 p.m. 9.6 ppb (9) 2.3 ppb (2) N/A 7.0 ppb (6) N/A N/A 6.0 ppb (5) N/A N/A 3.5 μg/m3 (15) 15.0
 
July 16, 2019, noon 7.6 ppb (7) 0.6 ppb (1) N/A 7.0 ppb (6) N/A N/A 7.0 ppb (5) N/A N/A 3.4 μg/m3 (14) 14.0
 
July 16, 2019, 11 a.m. 6.5 ppb (6) 0.8 ppb (1) N/A 6.0 ppb (6) N/A N/A 9.0 ppb (7) N/A N/A 3.3 μg/m3 (14) 14.0
 
July 16, 2019, 10 a.m. 4.8 ppb (4) 0.4 ppb (0) N/A 4.0 ppb (4) N/A N/A 11.0 ppb (8) N/A N/A 3.3 μg/m3 (14) 14.0
 
July 16, 2019, 9 a.m. 4.4 ppb (4) 0.0 ppb (0) N/A 4.0 ppb (4) N/A N/A 12.0 ppb (9) N/A N/A 3.5 μg/m3 (15) 15.0
 
July 16, 2019, 8 a.m. 6.8 ppb (6) 0.9 ppb (1) N/A 6.0 ppb (6) N/A N/A 11.0 ppb (8) N/A N/A 3.8 μg/m3 (16) 16.0
 
July 16, 2019, 7 a.m. 11.0 ppb (10) 3.3 ppb (3) N/A 8.0 ppb (7) N/A N/A 12.0 ppb (9) N/A N/A 3.7 μg/m3 (15) 15.0
 
July 16, 2019, 6 a.m. 17.2 ppb (16) 6.7 ppb (6) N/A 10.0 ppb (9) N/A N/A 12.0 ppb (9) N/A N/A 3.4 μg/m3 (14) 16.0
 
July 16, 2019, 5 a.m. 23.0 ppb (21) 9.9 ppb (9) N/A 13.0 ppb (12) N/A N/A 11.0 ppb (8) N/A N/A 3.4 μg/m3 (14) 21.0
 
July 16, 2019, 4 a.m. 24.2 ppb (22) 11.5 ppb (11) N/A 13.0 ppb (12) N/A N/A 13.0 ppb (10) N/A N/A 3.4 μg/m3 (14) 22.0
 
July 16, 2019, 3 a.m. 23.3 ppb (22) 12.4 ppb (11) N/A 11.0 ppb (10) N/A N/A 15.0 ppb (12) N/A N/A 3.6 μg/m3 (15) 22.0
 
July 16, 2019, 2 a.m. 21.1 ppb (20) 11.3 ppb (10) N/A 10.0 ppb (9) N/A N/A 17.0 ppb (13) N/A N/A 3.8 μg/m3 (16) 20.0
 
July 16, 2019, 1 a.m. 19.0 ppb (18) 9.9 ppb (9) N/A 9.0 ppb (8) N/A N/A 18.0 ppb (14) N/A N/A 3.8 μg/m3 (16) 18.0
 
July 16, 2019, midnight 19.0 ppb (18) 10.6 ppb (10) N/A 8.0 ppb (7) N/A N/A 19.0 ppb (15) N/A N/A 3.7 μg/m3 (15) 18.0
 
July 15, 2019, 11 p.m. 17.7 ppb (16) 9.9 ppb (9) N/A 8.0 ppb (7) N/A N/A 19.0 ppb (15) N/A N/A 3.6 μg/m3 (15) 16.0
 
July 15, 2019, 10 p.m. 15.6 ppb (14) 8.8 ppb (8) N/A 7.0 ppb (6) N/A N/A 19.0 ppb (15) N/A N/A 3.4 μg/m3 (14) 15.0
 
July 15, 2019, 9 p.m. 15.3 ppb (14) 9.4 ppb (9) N/A 6.0 ppb (6) N/A N/A 19.0 ppb (15) N/A N/A 3.5 μg/m3 (15) 15.0
 
July 15, 2019, 8 p.m. 20.3 ppb (19) 12.2 ppb (11) N/A 8.0 ppb (7) N/A N/A 17.0 ppb (13) N/A N/A 4.0 μg/m3 (17) 19.0