AQSQID: 410670005

Site Name: Portland Near Road

Location: Tualatin, OR

Reporting: True, Located: True

Current AQI: 80.0

Tualatin OR, US: 45.39916, -122.7455

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
Jan. 21, 2019, 6 p.m. 82.0 ppb (80) 60.9 ppb (57) N/A 21.0 ppb (19) N/A N/A 2.0 ppb (2) 0.6 ppb (7) N/A 10.6 μg/m3 (44) 80.0
 
Jan. 21, 2019, 5 p.m. 51.7 ppb (48) 33.9 ppb (31) N/A 18.0 ppb (17) N/A N/A 3.0 ppb (2) 0.5 ppb (6) N/A 9.2 μg/m3 (38) 48.0
 
Jan. 21, 2019, 4 p.m. 58.9 ppb (55) 38.2 ppb (35) N/A 21.0 ppb (19) N/A N/A 1.0 ppb (1) 0.5 ppb (6) N/A 9.9 μg/m3 (41) 55.0
 
Jan. 21, 2019, 3 p.m. 91.6 ppb (90) 69.0 ppb (66) N/A 23.0 ppb (21) N/A N/A 0.0 ppb (0) 0.7 ppb (8) N/A 11.3 μg/m3 (47) 90.0
 
Jan. 21, 2019, 2 p.m. 75.2 ppb (73) 54.7 ppb (51) N/A 21.0 ppb (19) N/A N/A 0.0 ppb (0) 0.6 ppb (7) N/A 10.0 μg/m3 (42) 73.0
 
Jan. 21, 2019, 1 p.m. 58.8 ppb (55) 41.2 ppb (38) N/A 18.0 ppb (17) N/A N/A 2.0 ppb (2) 0.5 ppb (6) N/A 8.7 μg/m3 (36) 55.0
 
Jan. 21, 2019, noon 36.0 ppb (33) 20.1 ppb (19) N/A 16.0 ppb (15) N/A N/A 4.0 ppb (3) 0.4 ppb (4) N/A 9.8 μg/m3 (41) 41.0
 
Jan. 21, 2019, 11 a.m. 28.0 ppb (26) 11.6 ppb (11) N/A 16.0 ppb (15) N/A N/A 5.0 ppb (4) 0.4 ppb (4) N/A 13.5 μg/m3 (53) 53.0
 
Jan. 21, 2019, 10 a.m. 22.8 ppb (21) 6.7 ppb (6) N/A 16.0 ppb (15) N/A N/A 5.0 ppb (4) 0.5 ppb (6) N/A 16.4 μg/m3 (59) 59.0
 
Jan. 21, 2019, 9 a.m. 24.2 ppb (22) 9.6 ppb (9) N/A 15.0 ppb (14) N/A N/A 6.0 ppb (5) 0.4 ppb (4) N/A 11.9 μg/m3 (50) 50.0
 
Jan. 21, 2019, 8 a.m. 31.7 ppb (29) 13.1 ppb (12) N/A 19.0 ppb (18) N/A N/A 2.0 ppb (2) 0.5 ppb (6) N/A 14.4 μg/m3 (55) 55.0
 
Jan. 21, 2019, 7 a.m. 48.3 ppb (45) 25.9 ppb (24) N/A 22.0 ppb (20) N/A N/A 0.0 ppb (0) 0.6 ppb (7) N/A 17.8 μg/m3 (62) 62.0
 
Jan. 21, 2019, 6 a.m. 43.4 ppb (40) 22.2 ppb (21) N/A 21.0 ppb (19) N/A N/A 0.0 ppb (0) 0.8 ppb (9) N/A 21.2 μg/m3 (70) 70.0
 
Jan. 21, 2019, 5 a.m. 50.0 ppb (46) 26.3 ppb (24) N/A 24.0 ppb (22) N/A N/A 1.0 ppb (1) 0.7 ppb (8) N/A 17.0 μg/m3 (61) 61.0
 
Jan. 21, 2019, 4 a.m. 43.1 ppb (40) 19.6 ppb (18) N/A 23.0 ppb (21) N/A N/A 3.0 ppb (2) 0.6 ppb (7) N/A 12.4 μg/m3 (51) 51.0
 
Jan. 21, 2019, 3 a.m. 20.8 ppb (19) 3.4 ppb (3) N/A 17.0 ppb (16) N/A N/A 8.0 ppb (6) 0.4 ppb (4) N/A 10.6 μg/m3 (44) 44.0
 
Jan. 21, 2019, 2 a.m. 15.7 ppb (15) 3.2 ppb (3) N/A 13.0 ppb (12) N/A N/A 11.0 ppb (8) 0.5 ppb (6) N/A 6.9 μg/m3 (29) 29.0
 
Jan. 21, 2019, 1 a.m. 8.8 ppb (8) 1.2 ppb (1) N/A 8.0 ppb (7) N/A N/A 19.0 ppb (15) 0.4 ppb (4) N/A 5.1 μg/m3 (21) 21.0
 
Jan. 21, 2019, midnight 7.8 ppb (7) 0.3 ppb (0) N/A 8.0 ppb (7) N/A N/A 22.0 ppb (17) 0.3 ppb (3) N/A 3.2 μg/m3 (13) 17.0
 
Jan. 20, 2019, 11 p.m. 12.3 ppb (11) 2.9 ppb (3) N/A 9.0 ppb (8) N/A N/A 23.0 ppb (18) 0.3 ppb (3) N/A 3.4 μg/m3 (14) 18.0
 
Jan. 20, 2019, 10 p.m. 9.5 ppb (9) 2.2 ppb (2) N/A 7.0 ppb (6) N/A N/A 25.0 ppb (19) 0.3 ppb (3) N/A 3.2 μg/m3 (13) 19.0
 
Jan. 20, 2019, 9 p.m. 33.5 ppb (31) 15.0 ppb (14) N/A 18.0 ppb (17) N/A N/A 17.0 ppb (13) 0.5 ppb (6) N/A 3.6 μg/m3 (15) 31.0
 
Jan. 20, 2019, 8 p.m. 37.4 ppb (35) 18.1 ppb (17) N/A 19.0 ppb (18) N/A N/A 15.0 ppb (12) 0.6 ppb (7) N/A 4.0 μg/m3 (17) 35.0
 
Jan. 20, 2019, 7 p.m. 42.6 ppb (39) 21.9 ppb (20) N/A 21.0 ppb (19) N/A N/A 11.0 ppb (8) 0.6 ppb (7) N/A 4.6 μg/m3 (19) 39.0
 
Jan. 20, 2019, 6 p.m. 40.2 ppb (37) 19.4 ppb (18) N/A 21.0 ppb (19) N/A N/A 11.0 ppb (8) 0.5 ppb (6) N/A 3.9 μg/m3 (16) 37.0
 
Jan. 20, 2019, 5 p.m. 32.8 ppb (30) 15.6 ppb (14) N/A 17.0 ppb (16) N/A N/A 13.0 ppb (10) 0.5 ppb (6) N/A 3.8 μg/m3 (16) 30.0
 
Jan. 20, 2019, 4 p.m. 26.0 ppb (24) 10.9 ppb (10) N/A 15.0 ppb (14) N/A N/A 11.0 ppb (8) 0.4 ppb (4) N/A 4.0 μg/m3 (17) 24.0
 
Jan. 20, 2019, 3 p.m. 23.8 ppb (22) 9.5 ppb (9) N/A 14.0 ppb (13) N/A N/A 6.0 ppb (5) 0.4 ppb (4) N/A 5.0 μg/m3 (21) 22.0
 
Jan. 20, 2019, 2 p.m. 17.6 ppb (16) 6.3 ppb (6) N/A 11.0 ppb (10) N/A N/A 7.0 ppb (5) 0.4 ppb (4) N/A 5.7 μg/m3 (24) 24.0
 
Jan. 20, 2019, 1 p.m. 13.8 ppb (13) 4.6 ppb (4) N/A 9.0 ppb (8) N/A N/A 8.0 ppb (6) 0.3 ppb (3) N/A 6.0 μg/m3 (25) 25.0
 
Jan. 20, 2019, noon 15.0 ppb (14) 4.1 ppb (4) N/A 11.0 ppb (10) N/A N/A 5.0 ppb (4) 0.3 ppb (3) N/A 6.6 μg/m3 (28) 28.0
 
Jan. 20, 2019, 11 a.m. 30.8 ppb (29) 13.5 ppb (12) N/A 17.0 ppb (16) N/A N/A 1.0 ppb (1) 0.5 ppb (6) N/A 9.3 μg/m3 (39) 39.0
 
Jan. 20, 2019, 10 a.m. 28.8 ppb (27) 11.1 ppb (10) N/A 18.0 ppb (17) N/A N/A 1.0 ppb (1) 0.5 ppb (6) N/A 9.6 μg/m3 (40) 40.0
 
Jan. 20, 2019, 9 a.m. 31.5 ppb (29) 11.9 ppb (11) N/A 20.0 ppb (19) N/A N/A 0.0 ppb (0) 0.5 ppb (6) N/A 9.7 μg/m3 (40) 40.0
 
Jan. 20, 2019, 8 a.m. 34.5 ppb (32) 13.7 ppb (13) N/A 21.0 ppb (19) N/A N/A 1.0 ppb (1) 0.6 ppb (7) N/A 9.9 μg/m3 (41) 41.0
 
Jan. 20, 2019, 7 a.m. 46.6 ppb (43) 25.6 ppb (24) N/A 21.0 ppb (19) N/A N/A 0.0 ppb (0) 0.7 ppb (8) N/A 10.1 μg/m3 (42) 43.0
 
Jan. 20, 2019, 6 a.m. 47.5 ppb (44) 23.9 ppb (22) N/A 24.0 ppb (22) N/A N/A 0.0 ppb (0) 0.6 ppb (7) N/A 10.6 μg/m3 (44) 44.0
 
Jan. 20, 2019, 5 a.m. 68.4 ppb (65) 45.1 ppb (42) N/A 23.0 ppb (21) N/A N/A 0.0 ppb (0) 0.8 ppb (9) N/A 13.2 μg/m3 (53) 65.0
 
Jan. 20, 2019, 4 a.m. 57.0 ppb (53) 36.1 ppb (33) N/A 21.0 ppb (19) N/A N/A 0.0 ppb (0) 0.8 ppb (9) N/A 14.2 μg/m3 (55) 55.0
 
Jan. 20, 2019, 3 a.m. 29.1 ppb (27) 12.9 ppb (12) N/A 16.0 ppb (15) N/A N/A 0.0 ppb (0) 0.7 ppb (8) N/A 10.9 μg/m3 (45) 45.0
 
Jan. 20, 2019, 2 a.m. 20.6 ppb (19) 6.3 ppb (6) N/A 14.0 ppb (13) N/A N/A 1.0 ppb (1) 0.5 ppb (6) N/A 8.3 μg/m3 (35) 35.0
 
Jan. 20, 2019, 1 a.m. 19.0 ppb (18) 4.5 ppb (4) N/A 14.0 ppb (13) N/A N/A 1.0 ppb (1) 0.5 ppb (6) N/A 7.4 μg/m3 (31) 31.0
 
Jan. 20, 2019, midnight 14.9 ppb (14) 2.0 ppb (2) N/A 13.0 ppb (12) N/A N/A 7.0 ppb (5) 0.5 ppb (6) N/A 6.7 μg/m3 (28) 28.0
 
Jan. 19, 2019, 11 p.m. 9.1 ppb (8) 0.8 ppb (1) N/A 8.0 ppb (7) N/A N/A 17.0 ppb (13) 0.4 ppb (4) N/A 6.7 μg/m3 (28) 28.0
 
Jan. 19, 2019, 10 p.m. 11.3 ppb (10) 2.0 ppb (2) N/A 9.0 ppb (8) N/A N/A 17.0 ppb (13) 0.4 ppb (4) N/A 6.7 μg/m3 (28) 28.0
 
Jan. 19, 2019, 9 p.m. 10.6 ppb (10) 2.0 ppb (2) N/A 9.0 ppb (8) N/A N/A 19.0 ppb (15) 0.4 ppb (4) N/A 7.3 μg/m3 (30) 30.0
 
Jan. 19, 2019, 8 p.m. 28.8 ppb (27) 12.5 ppb (12) N/A 16.0 ppb (15) N/A N/A 14.0 ppb (11) 0.5 ppb (6) N/A 7.1 μg/m3 (30) 30.0
 
Jan. 19, 2019, 7 p.m. 27.4 ppb (25) 12.1 ppb (11) N/A 15.0 ppb (14) N/A N/A 8.0 ppb (6) 0.5 ppb (6) N/A 6.1 μg/m3 (25) 25.0
 
Jan. 19, 2019, 6 p.m. 25.9 ppb (24) 10.0 ppb (9) N/A 16.0 ppb (15) N/A N/A 6.0 ppb (5) 0.4 ppb (4) N/A 5.2 μg/m3 (22) 24.0
 
Jan. 19, 2019, 5 p.m. 28.3 ppb (26) 9.8 ppb (9) N/A 18.0 ppb (17) N/A N/A 4.0 ppb (3) 0.5 ppb (6) N/A 5.3 μg/m3 (22) 26.0
 
Jan. 19, 2019, 4 p.m. 26.9 ppb (25) 7.1 ppb (7) N/A 20.0 ppb (19) N/A N/A 4.0 ppb (3) 0.5 ppb (6) N/A 5.4 μg/m3 (23) 25.0
 
Jan. 19, 2019, 3 p.m. 22.9 ppb (21) 2.6 ppb (2) N/A 20.0 ppb (19) N/A N/A 3.0 ppb (2) 0.4 ppb (4) N/A 4.7 μg/m3 (20) 21.0
 
Jan. 19, 2019, 2 p.m. 26.4 ppb (24) 8.0 ppb (7) N/A 18.0 ppb (17) N/A N/A 14.0 ppb (11) 0.4 ppb (4) N/A 4.9 μg/m3 (20) 24.0
 
Jan. 19, 2019, 1 p.m. 21.6 ppb (20) 6.8 ppb (6) N/A 15.0 ppb (14) N/A N/A 16.0 ppb (12) 0.4 ppb (4) N/A 4.0 μg/m3 (17) 20.0
 
Jan. 19, 2019, noon 12.3 ppb (11) 2.3 ppb (2) N/A 10.0 ppb (9) N/A N/A 13.0 ppb (10) 0.3 ppb (3) N/A 2.4 μg/m3 (10) 11.0
 
Jan. 19, 2019, 11 a.m. 10.7 ppb (10) 1.6 ppb (1) N/A 9.0 ppb (8) N/A N/A 16.0 ppb (12) 0.3 ppb (3) N/A 2.2 μg/m3 (9) 12.0
 
Jan. 19, 2019, 10 a.m. 8.5 ppb (8) 1.9 ppb (2) N/A 7.0 ppb (6) N/A N/A 20.0 ppb (15) 0.3 ppb (3) N/A 2.0 μg/m3 (8) 15.0
 
Jan. 19, 2019, 9 a.m. 4.9 ppb (5) 0.7 ppb (1) N/A 4.0 ppb (4) N/A N/A 22.0 ppb (17) 0.3 ppb (3) N/A 2.0 μg/m3 (8) 17.0
 
Jan. 19, 2019, 8 a.m. 4.7 ppb (4) 0.6 ppb (1) N/A 4.0 ppb (4) N/A N/A 23.0 ppb (18) 0.3 ppb (3) N/A 2.2 μg/m3 (9) 18.0
 
Jan. 19, 2019, 7 a.m. 6.9 ppb (6) 0.4 ppb (0) N/A 6.0 ppb (6) N/A N/A 19.0 ppb (15) 0.3 ppb (3) N/A 3.2 μg/m3 (13) 15.0
 
Jan. 19, 2019, 6 a.m. 8.4 ppb (8) 0.7 ppb (1) N/A 8.0 ppb (7) N/A N/A 18.0 ppb (14) 0.3 ppb (3) N/A 3.4 μg/m3 (14) 14.0
 
Jan. 19, 2019, 5 a.m. 5.7 ppb (5) 0.0 ppb (0) N/A 6.0 ppb (6) N/A N/A 23.0 ppb (18) 0.3 ppb (3) N/A 3.6 μg/m3 (15) 18.0
 
Jan. 19, 2019, 4 a.m. 7.0 ppb (6) 0.4 ppb (0) N/A 7.0 ppb (6) N/A N/A 22.0 ppb (17) 0.3 ppb (3) N/A 4.0 μg/m3 (17) 17.0
 
Jan. 19, 2019, 3 a.m. 13.8 ppb (13) 2.5 ppb (2) N/A 11.0 ppb (10) N/A N/A 20.0 ppb (15) 0.3 ppb (3) N/A 4.3 μg/m3 (18) 18.0
 
Jan. 19, 2019, 2 a.m. 10.6 ppb (10) 0.2 ppb (0) N/A 10.0 ppb (9) N/A N/A 21.0 ppb (16) 0.4 ppb (4) N/A 4.9 μg/m3 (20) 20.0
 
Jan. 19, 2019, 1 a.m. 13.3 ppb (12) 0.9 ppb (1) N/A 12.0 ppb (11) N/A N/A 20.0 ppb (15) 0.4 ppb (4) N/A 4.3 μg/m3 (18) 18.0
 
Jan. 19, 2019, midnight 17.3 ppb (16) 1.6 ppb (1) N/A 16.0 ppb (15) N/A N/A 15.0 ppb (12) 0.4 ppb (4) N/A 4.6 μg/m3 (19) 19.0
 
Jan. 18, 2019, 11 p.m. 13.5 ppb (12) 1.4 ppb (1) N/A 12.0 ppb (11) N/A N/A 20.0 ppb (15) 0.4 ppb (4) N/A 3.8 μg/m3 (16) 16.0
 
Jan. 18, 2019, 10 p.m. 24.2 ppb (22) 4.6 ppb (4) N/A 20.0 ppb (19) N/A N/A 7.0 ppb (5) 0.5 ppb (6) N/A 4.7 μg/m3 (20) 22.0
 
Jan. 18, 2019, 9 p.m. 34.2 ppb (32) 14.5 ppb (13) N/A 20.0 ppb (19) N/A N/A 3.0 ppb (2) 0.5 ppb (6) N/A 5.5 μg/m3 (23) 32.0
 
Jan. 18, 2019, 8 p.m. 45.4 ppb (42) 23.6 ppb (22) N/A 22.0 ppb (20) N/A N/A 3.0 ppb (2) 0.6 ppb (7) N/A 5.3 μg/m3 (22) 42.0
 
Jan. 18, 2019, 7 p.m. 31.4 ppb (29) 12.3 ppb (11) N/A 19.0 ppb (18) N/A N/A 6.0 ppb (5) 0.5 ppb (6) N/A 4.5 μg/m3 (19) 29.0
 
Jan. 18, 2019, 6 p.m. 24.0 ppb (22) 7.9 ppb (7) N/A 16.0 ppb (15) N/A N/A 9.0 ppb (7) 0.4 ppb (4) N/A 4.6 μg/m3 (19) 22.0
 
Jan. 18, 2019, 5 p.m. 29.4 ppb (27) 11.8 ppb (11) N/A 18.0 ppb (17) N/A N/A 6.0 ppb (5) 0.5 ppb (6) N/A 4.9 μg/m3 (20) 27.0
 
Jan. 18, 2019, 4 p.m. 39.4 ppb (36) 18.0 ppb (17) N/A 21.0 ppb (19) N/A N/A 2.0 ppb (2) 0.5 ppb (6) N/A 5.3 μg/m3 (22) 36.0
 
Jan. 18, 2019, 3 p.m. 44.6 ppb (41) 24.0 ppb (22) N/A 21.0 ppb (19) N/A N/A 0.0 ppb (0) 0.6 ppb (7) N/A 3.5 μg/m3 (15) 41.0
 
Jan. 18, 2019, 2 p.m. 41.9 ppb (39) 20.9 ppb (19) N/A 21.0 ppb (19) N/A N/A 2.0 ppb (2) 0.5 ppb (6) N/A 3.4 μg/m3 (14) 39.0
 
Jan. 18, 2019, 1 p.m. 42.4 ppb (39) 20.5 ppb (19) N/A 22.0 ppb (20) N/A N/A 8.0 ppb (6) 0.4 ppb (4) N/A 3.8 μg/m3 (16) 39.0
 
Jan. 18, 2019, noon 29.6 ppb (27) 10.4 ppb (10) N/A 19.0 ppb (18) N/A N/A 15.0 ppb (12) 0.3 ppb (3) N/A 3.3 μg/m3 (14) 27.0
 
Jan. 18, 2019, 11 a.m. 4.3 ppb (4) 0.6 ppb (1) N/A 4.0 ppb (4) N/A N/A 30.0 ppb (23) 0.2 ppb (2) N/A 2.6 μg/m3 (11) 23.0
 
Jan. 18, 2019, 10 a.m. 4.9 ppb (5) 0.6 ppb (1) N/A 4.0 ppb (4) N/A N/A 31.0 ppb (24) 0.3 ppb (3) N/A 2.5 μg/m3 (10) 24.0
 
Jan. 18, 2019, 9 a.m. 2.9 ppb (3) 0.0 ppb (0) N/A 3.0 ppb (3) N/A N/A 32.0 ppb (25) 0.2 ppb (2) N/A 2.8 μg/m3 (12) 25.0
 
Jan. 18, 2019, 8 a.m. 3.7 ppb (3) 0.2 ppb (0) N/A 3.0 ppb (3) N/A N/A 31.0 ppb (24) 0.3 ppb (3) N/A 2.5 μg/m3 (10) 24.0
 
Jan. 18, 2019, 7 a.m. 6.0 ppb (6) 1.4 ppb (1) N/A 5.0 ppb (5) N/A N/A 30.0 ppb (23) 0.3 ppb (3) N/A 2.9 μg/m3 (12) 23.0
 
Jan. 18, 2019, 6 a.m. 5.8 ppb (5) 1.2 ppb (1) N/A 5.0 ppb (5) N/A N/A 30.0 ppb (23) 0.3 ppb (3) N/A 3.0 μg/m3 (12) 23.0
 
Jan. 18, 2019, 5 a.m. 9.6 ppb (9) 2.4 ppb (2) N/A 7.0 ppb (6) N/A N/A 29.0 ppb (22) 0.3 ppb (3) N/A 3.0 μg/m3 (12) 22.0
 
Jan. 18, 2019, 4 a.m. 6.9 ppb (6) 1.2 ppb (1) N/A 6.0 ppb (6) N/A N/A 31.0 ppb (24) 0.3 ppb (3) N/A 3.0 μg/m3 (12) 24.0
 
Jan. 18, 2019, 3 a.m. 7.3 ppb (7) 1.3 ppb (1) N/A 6.0 ppb (6) N/A N/A 31.0 ppb (24) 0.3 ppb (3) N/A 3.2 μg/m3 (13) 24.0
 
Jan. 18, 2019, 2 a.m. 7.3 ppb (7) 1.1 ppb (1) N/A 6.0 ppb (6) N/A N/A 29.0 ppb (22) 0.3 ppb (3) N/A 3.4 μg/m3 (14) 22.0
 
Jan. 18, 2019, 1 a.m. 9.8 ppb (9) 2.5 ppb (2) N/A 7.0 ppb (6) N/A N/A 30.0 ppb (23) 0.3 ppb (3) N/A 2.5 μg/m3 (10) 23.0
 
Jan. 18, 2019, midnight 11.4 ppb (11) 3.2 ppb (3) N/A 8.0 ppb (7) N/A N/A 29.0 ppb (22) 0.3 ppb (3) N/A 2.5 μg/m3 (10) 22.0
 
Jan. 17, 2019, 11 p.m. 8.4 ppb (8) 2.6 ppb (2) N/A 6.0 ppb (6) N/A N/A 31.0 ppb (24) 0.3 ppb (3) N/A 2.5 μg/m3 (10) 24.0
 
Jan. 17, 2019, 10 p.m. 10.2 ppb (9) 3.7 ppb (3) N/A 6.0 ppb (6) N/A N/A 30.0 ppb (23) 0.3 ppb (3) N/A 2.2 μg/m3 (9) 23.0
 
Jan. 17, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (18) 0.3 ppb (3) N/A 2.6 μg/m3 (11) 18.0
 
Jan. 17, 2019, 8 p.m. 29.3 ppb (27) 13.1 ppb (12) N/A 16.0 ppb (15) N/A N/A 22.0 ppb (17) 0.3 ppb (3) N/A 3.6 μg/m3 (15) 27.0
 
Jan. 17, 2019, 7 p.m. 9.2 ppb (9) 2.0 ppb (2) N/A 7.0 ppb (6) N/A N/A 23.0 ppb (18) 0.3 ppb (3) N/A 4.6 μg/m3 (19) 19.0
 
Jan. 17, 2019, 6 p.m. 19.9 ppb (18) 7.3 ppb (7) N/A 13.0 ppb (12) N/A N/A 13.0 ppb (10) 0.3 ppb (3) N/A 7.0 μg/m3 (29) 29.0
 
Jan. 17, 2019, 5 p.m. 23.7 ppb (22) 7.4 ppb (7) N/A 16.0 ppb (15) N/A N/A 6.0 ppb (5) 0.3 ppb (3) N/A 4.3 μg/m3 (18) 22.0
 
Jan. 17, 2019, 4 p.m. 22.7 ppb (21) 6.4 ppb (6) N/A 16.0 ppb (15) N/A N/A 6.0 ppb (5) 0.3 ppb (3) N/A 4.1 μg/m3 (17) 21.0
 
Jan. 17, 2019, 3 p.m. 42.9 ppb (40) 25.0 ppb (23) N/A 18.0 ppb (17) N/A N/A 5.0 ppb (4) 0.4 ppb (4) N/A 4.1 μg/m3 (17) 40.0
 
Jan. 17, 2019, 2 p.m. 30.8 ppb (29) 15.4 ppb (14) N/A 15.0 ppb (14) N/A N/A 6.0 ppb (5) 0.3 ppb (3) N/A 3.5 μg/m3 (15) 29.0
 
Jan. 17, 2019, 1 p.m. 33.9 ppb (31) 16.9 ppb (16) N/A 17.0 ppb (16) N/A N/A 5.0 ppb (4) 0.3 ppb (3) N/A 3.5 μg/m3 (15) 31.0
 
Jan. 17, 2019, noon 35.8 ppb (33) 20.5 ppb (19) N/A 15.0 ppb (14) N/A N/A 7.0 ppb (5) 0.2 ppb (2) N/A 3.5 μg/m3 (15) 33.0
 
Jan. 17, 2019, 11 a.m. 3.7 ppb (3) 0.2 ppb (0) N/A 4.0 ppb (4) N/A N/A 17.0 ppb (13) 0.2 ppb (2) N/A 3.0 μg/m3 (12) 13.0
 
Jan. 17, 2019, 10 a.m. 3.9 ppb (4) 0.2 ppb (0) N/A 4.0 ppb (4) N/A N/A 17.0 ppb (13) 0.2 ppb (2) N/A 2.8 μg/m3 (12) 13.0
 
Jan. 17, 2019, 9 a.m. 3.7 ppb (3) 0.2 ppb (0) N/A 3.0 ppb (3) N/A N/A 17.0 ppb (13) 0.2 ppb (2) N/A 2.6 μg/m3 (11) 13.0
 
Jan. 17, 2019, 8 a.m. 6.8 ppb (6) 2.2 ppb (2) N/A 5.0 ppb (5) N/A N/A 16.0 ppb (12) 0.2 ppb (2) N/A 2.6 μg/m3 (11) 12.0
 
Jan. 17, 2019, 7 a.m. 3.9 ppb (4) 0.4 ppb (0) N/A 4.0 ppb (4) N/A N/A 17.0 ppb (13) 0.2 ppb (2) N/A 2.7 μg/m3 (11) 13.0
 
Jan. 17, 2019, 6 a.m. 4.2 ppb (4) 0.7 ppb (1) N/A 4.0 ppb (4) N/A N/A 17.0 ppb (13) 0.2 ppb (2) N/A 3.6 μg/m3 (15) 15.0
 
Jan. 17, 2019, 5 a.m. 4.6 ppb (4) 0.1 ppb (0) N/A 4.0 ppb (4) N/A N/A 16.0 ppb (12) 0.2 ppb (2) N/A 4.3 μg/m3 (18) 18.0
 
Jan. 17, 2019, 4 a.m. 4.7 ppb (4) 0.3 ppb (0) N/A 4.0 ppb (4) N/A N/A 16.0 ppb (12) 0.2 ppb (2) N/A 5.0 μg/m3 (21) 21.0
 
Jan. 17, 2019, 3 a.m. 5.0 ppb (5) 0.0 ppb (0) N/A 5.0 ppb (5) N/A N/A 15.0 ppb (12) 0.2 ppb (2) N/A 6.3 μg/m3 (26) 26.0
 
Jan. 17, 2019, 2 a.m. 6.1 ppb (6) 0.8 ppb (1) N/A 5.0 ppb (5) N/A N/A 15.0 ppb (12) 0.2 ppb (2) N/A 6.8 μg/m3 (28) 28.0
 
Jan. 17, 2019, 1 a.m. 7.1 ppb (7) 0.5 ppb (0) N/A 7.0 ppb (6) N/A N/A 15.0 ppb (12) 0.2 ppb (2) N/A 7.4 μg/m3 (31) 31.0
 
Jan. 17, 2019, midnight 8.9 ppb (8) 1.5 ppb (1) N/A 7.0 ppb (6) N/A N/A 14.0 ppb (11) 0.2 ppb (2) N/A 7.8 μg/m3 (32) 32.0
 
Jan. 16, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 15.0 ppb (12) 0.2 ppb (2) N/A 8.1 μg/m3 (34) 34.0
 
Jan. 16, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 16.0 ppb (12) 0.2 ppb (2) N/A 7.7 μg/m3 (32) 32.0
 
Jan. 16, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 16.0 ppb (12) 0.2 ppb (2) N/A 7.4 μg/m3 (31) 31.0
 
Jan. 16, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 15.0 ppb (12) 0.2 ppb (2) N/A 7.1 μg/m3 (30) 30.0
 
Jan. 16, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 16.0 ppb (12) 0.2 ppb (2) N/A 7.1 μg/m3 (30) 30.0
 
Jan. 16, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 16.0 ppb (12) 0.2 ppb (2) N/A 7.7 μg/m3 (32) 32.0
 
Jan. 16, 2019, 5 p.m. 11.4 ppb (11) 4.4 ppb (4) N/A 7.0 ppb (6) N/A N/A 14.0 ppb (11) 0.2 ppb (2) N/A 7.9 μg/m3 (33) 33.0
 
Jan. 16, 2019, 4 p.m. 11.6 ppb (11) 3.8 ppb (4) N/A 8.0 ppb (7) N/A N/A 13.0 ppb (10) 0.2 ppb (2) N/A 7.9 μg/m3 (33) 33.0
 
Jan. 16, 2019, 3 p.m. 9.9 ppb (9) 3.0 ppb (3) N/A 7.0 ppb (6) N/A N/A 14.0 ppb (11) 0.2 ppb (2) N/A 8.3 μg/m3 (35) 35.0
 
Jan. 16, 2019, 2 p.m. 7.7 ppb (7) 2.5 ppb (2) N/A 5.0 ppb (5) N/A N/A 16.0 ppb (12) 0.1 ppb (1) N/A 8.4 μg/m3 (35) 35.0
 
Jan. 16, 2019, 1 p.m. 5.5 ppb (5) 2.0 ppb (2) N/A 3.0 ppb (3) N/A N/A 17.0 ppb (13) 0.1 ppb (1) N/A 8.6 μg/m3 (36) 36.0
 
Jan. 16, 2019, noon 4.5 ppb (4) 1.0 ppb (1) N/A 3.0 ppb (3) N/A N/A 17.0 ppb (13) 0.1 ppb (1) N/A 9.2 μg/m3 (38) 38.0
 
Jan. 16, 2019, 11 a.m. 4.2 ppb (4) 1.2 ppb (1) N/A 3.0 ppb (3) N/A N/A 17.0 ppb (13) 0.1 ppb (1) N/A 8.1 μg/m3 (34) 34.0
 
Jan. 16, 2019, 10 a.m. 4.7 ppb (4) 1.4 ppb (1) N/A 3.0 ppb (3) N/A N/A 17.0 ppb (13) 0.1 ppb (1) N/A 7.5 μg/m3 (31) 31.0
 
Jan. 16, 2019, 9 a.m. 4.2 ppb (4) 1.0 ppb (1) N/A 3.0 ppb (3) N/A N/A 17.0 ppb (13) 0.1 ppb (1) N/A 7.5 μg/m3 (31) 31.0
 
Jan. 16, 2019, 8 a.m. 3.9 ppb (4) 1.2 ppb (1) N/A 3.0 ppb (3) N/A N/A 17.0 ppb (13) 0.1 ppb (1) N/A 7.8 μg/m3 (32) 32.0
 
Jan. 16, 2019, 7 a.m. 4.0 ppb (4) 0.8 ppb (1) N/A 3.0 ppb (3) N/A N/A 17.0 ppb (13) 0.1 ppb (1) N/A 7.0 μg/m3 (29) 29.0
 
Jan. 16, 2019, 6 a.m. 4.4 ppb (4) 1.2 ppb (1) N/A 3.0 ppb (3) N/A N/A 17.0 ppb (13) 0.1 ppb (1) N/A 6.2 μg/m3 (26) 26.0
 
Jan. 16, 2019, 5 a.m. 4.4 ppb (4) 1.0 ppb (1) N/A 3.0 ppb (3) N/A N/A 17.0 ppb (13) 0.1 ppb (1) N/A 5.6 μg/m3 (23) 23.0
 
Jan. 16, 2019, 4 a.m. 4.7 ppb (4) 0.8 ppb (1) N/A 4.0 ppb (4) N/A N/A 16.0 ppb (12) 0.1 ppb (1) N/A 5.6 μg/m3 (23) 23.0
 
Jan. 16, 2019, 3 a.m. 5.3 ppb (5) 1.0 ppb (1) N/A 4.0 ppb (4) N/A N/A 15.0 ppb (12) 0.1 ppb (1) N/A 5.7 μg/m3 (24) 24.0
 
Jan. 16, 2019, 2 a.m. 5.5 ppb (5) 1.1 ppb (1) N/A 4.0 ppb (4) N/A N/A 14.0 ppb (11) 0.1 ppb (1) N/A 5.3 μg/m3 (22) 22.0
 
Jan. 16, 2019, 1 a.m. 6.2 ppb (6) 1.5 ppb (1) N/A 5.0 ppb (5) N/A N/A 13.0 ppb (10) 0.2 ppb (2) N/A 4.7 μg/m3 (20) 20.0
 
Jan. 16, 2019, midnight 6.5 ppb (6) 1.7 ppb (2) N/A 5.0 ppb (5) N/A N/A 13.0 ppb (10) 0.2 ppb (2) N/A 4.7 μg/m3 (20) 20.0
 
Jan. 15, 2019, 11 p.m. 5.8 ppb (5) 2.0 ppb (2) N/A 4.0 ppb (4) N/A N/A 13.0 ppb (10) 0.2 ppb (2) N/A 4.9 μg/m3 (20) 20.0
 
Jan. 15, 2019, 10 p.m. 6.3 ppb (6) 2.9 ppb (3) N/A 3.0 ppb (3) N/A N/A 11.0 ppb (8) 0.1 ppb (1) N/A 5.6 μg/m3 (23) 23.0
 
Jan. 15, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A N/A 0.2 ppb (2) N/A 5.7 μg/m3 (24) 24.0
 
Jan. 15, 2019, 8 p.m. 6.0 ppb (6) 2.2 ppb (2) N/A 4.0 ppb (4) N/A N/A 20.0 ppb (15) 0.2 ppb (2) N/A 5.4 μg/m3 (23) 23.0
 
Jan. 15, 2019, 7 p.m. 6.0 ppb (6) 2.5 ppb (2) N/A 4.0 ppb (4) N/A N/A 19.0 ppb (15) 0.2 ppb (2) N/A 5.0 μg/m3 (21) 21.0
 
Jan. 15, 2019, 6 p.m. 6.3 ppb (6) 2.9 ppb (3) N/A 3.0 ppb (3) N/A N/A 19.0 ppb (15) 0.2 ppb (2) N/A 4.9 μg/m3 (20) 20.0
 
Jan. 15, 2019, 5 p.m. 5.8 ppb (5) 1.8 ppb (2) N/A 4.0 ppb (4) N/A N/A 19.0 ppb (15) 0.1 ppb (1) N/A 4.8 μg/m3 (20) 20.0
 
Jan. 15, 2019, 4 p.m. 7.6 ppb (7) 2.7 ppb (3) N/A 5.0 ppb (5) N/A N/A 18.0 ppb (14) 0.2 ppb (2) N/A 4.8 μg/m3 (20) 20.0
 
Jan. 15, 2019, 3 p.m. 5.6 ppb (5) 1.8 ppb (2) N/A 4.0 ppb (4) N/A N/A 19.0 ppb (15) 0.1 ppb (1) N/A 4.6 μg/m3 (19) 19.0
 
Jan. 15, 2019, 2 p.m. 4.8 ppb (4) 1.7 ppb (2) N/A 3.0 ppb (3) N/A N/A 19.0 ppb (15) 0.1 ppb (1) N/A 4.6 μg/m3 (19) 19.0
 
Jan. 15, 2019, 1 p.m. 4.3 ppb (4) 1.7 ppb (2) N/A 3.0 ppb (3) N/A N/A 20.0 ppb (15) 0.1 ppb (1) N/A 4.7 μg/m3 (20) 20.0
 
Jan. 15, 2019, noon 3.5 ppb (3) 1.4 ppb (1) N/A 2.0 ppb (2) N/A N/A 21.0 ppb (16) 0.1 ppb (1) N/A 4.4 μg/m3 (18) 18.0
 
Jan. 15, 2019, 11 a.m. 3.7 ppb (3) 1.9 ppb (2) N/A 2.0 ppb (2) N/A N/A 21.0 ppb (16) 0.1 ppb (1) N/A 4.3 μg/m3 (18) 18.0
 
Jan. 15, 2019, 10 a.m. 3.2 ppb (3) 1.4 ppb (1) N/A 2.0 ppb (2) N/A N/A 21.0 ppb (16) 0.1 ppb (1) N/A 5.2 μg/m3 (22) 22.0
 
Jan. 15, 2019, 9 a.m. 3.4 ppb (3) 1.5 ppb (1) N/A 2.0 ppb (2) N/A N/A 21.0 ppb (16) 0.1 ppb (1) N/A 5.3 μg/m3 (22) 22.0
 
Jan. 15, 2019, 8 a.m. 3.1 ppb (3) 1.6 ppb (1) N/A 2.0 ppb (2) N/A N/A 22.0 ppb (17) 0.1 ppb (1) N/A 4.4 μg/m3 (18) 18.0
 
Jan. 15, 2019, 7 a.m. 3.5 ppb (3) 1.2 ppb (1) N/A 2.0 ppb (2) N/A N/A 22.0 ppb (17) 0.1 ppb (1) N/A 3.8 μg/m3 (16) 17.0
 
Jan. 15, 2019, 6 a.m. 3.2 ppb (3) 1.4 ppb (1) N/A 2.0 ppb (2) N/A N/A 23.0 ppb (18) 0.1 ppb (1) N/A 3.6 μg/m3 (15) 18.0
 
Jan. 15, 2019, 5 a.m. 3.9 ppb (4) 1.6 ppb (1) N/A 2.0 ppb (2) N/A N/A 22.0 ppb (17) 0.1 ppb (1) N/A 3.6 μg/m3 (15) 17.0
 
Jan. 15, 2019, 4 a.m. 3.8 ppb (4) 1.1 ppb (1) N/A 3.0 ppb (3) N/A N/A 21.0 ppb (16) 0.1 ppb (1) N/A 3.5 μg/m3 (15) 16.0
 
Jan. 15, 2019, 3 a.m. 4.9 ppb (5) 1.8 ppb (2) N/A 3.0 ppb (3) N/A N/A 20.0 ppb (15) 0.1 ppb (1) N/A 3.9 μg/m3 (16) 16.0
 
Jan. 15, 2019, 2 a.m. 5.3 ppb (5) 1.6 ppb (1) N/A 4.0 ppb (4) N/A N/A 20.0 ppb (15) 0.2 ppb (2) N/A 3.8 μg/m3 (16) 16.0
 
Jan. 15, 2019, 1 a.m. 4.7 ppb (4) 1.7 ppb (2) N/A 3.0 ppb (3) N/A N/A 20.0 ppb (15) 0.2 ppb (2) N/A 3.7 μg/m3 (15) 15.0
 
Jan. 15, 2019, midnight 5.6 ppb (5) 2.4 ppb (2) N/A 3.0 ppb (3) N/A N/A 20.0 ppb (15) 0.2 ppb (2) N/A 3.3 μg/m3 (14) 15.0
 
Jan. 14, 2019, 11 p.m. 5.8 ppb (5) 3.0 ppb (3) N/A 3.0 ppb (3) N/A N/A 21.0 ppb (16) 0.2 ppb (2) N/A 3.1 μg/m3 (13) 16.0
 
Jan. 14, 2019, 10 p.m. 4.9 ppb (5) 2.6 ppb (2) N/A 2.0 ppb (2) N/A N/A 21.0 ppb (16) 0.2 ppb (2) N/A 2.9 μg/m3 (12) 16.0
 
Jan. 14, 2019, 9 p.m. 4.2 ppb (4) 2.1 ppb (2) N/A 2.0 ppb (2) N/A N/A 21.0 ppb (16) 0.2 ppb (2) N/A 2.9 μg/m3 (12) 16.0
 
Jan. 14, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (16) 0.2 ppb (2) N/A 3.2 μg/m3 (13) 16.0
 
Jan. 14, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (16) 0.2 ppb (2) N/A 3.3 μg/m3 (14) 16.0