AQSQID: 410670005

Site Name: Portland Near Road

Location: Lake Oswego (Swest Bradbury Court), OR

Reporting: True, Located: True

Current AQI: 15.0

Lake Oswego (Swest Bradbury Court) OR, US: 45.39916, -122.7455

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
Jan. 18, 2020, midnight 12.5 ppb (12) 1.2 ppb (1) N/A 11.0 ppb (10) N/A N/A 17.0 ppb (13) N/A N/A 3.6 μg/m3 (15) 15.0
 
Jan. 17, 2020, 11 p.m. 8.2 ppb (8) 1.0 ppb (1) N/A 7.0 ppb (6) N/A N/A 24.0 ppb (18) N/A N/A 3.3 μg/m3 (14) 18.0
 
Jan. 17, 2020, 10 p.m. 8.7 ppb (8) 1.5 ppb (1) N/A 7.0 ppb (6) N/A N/A 25.0 ppb (19) N/A N/A 3.9 μg/m3 (16) 19.0
 
Jan. 17, 2020, 9 p.m. 15.1 ppb (14) 3.8 ppb (4) N/A 11.0 ppb (10) N/A N/A 20.0 ppb (15) N/A N/A 3.7 μg/m3 (15) 15.0
 
Jan. 17, 2020, 8 p.m. 16.5 ppb (15) 5.6 ppb (5) N/A 11.0 ppb (10) N/A N/A 21.0 ppb (16) N/A N/A 3.8 μg/m3 (16) 16.0
 
Jan. 17, 2020, 6 p.m. 18.0 ppb (17) 7.2 ppb (7) N/A 11.0 ppb (10) N/A N/A 15.0 ppb (12) N/A N/A 5.3 μg/m3 (22) 22.0
 
Jan. 17, 2020, 5 p.m. 19.2 ppb (18) 6.1 ppb (6) N/A 13.0 ppb (12) N/A N/A 9.0 ppb (7) N/A N/A 6.0 μg/m3 (25) 25.0
 
Jan. 17, 2020, 4 p.m. 26.3 ppb (24) 10.4 ppb (10) N/A 16.0 ppb (15) N/A N/A 4.0 ppb (3) N/A N/A 6.2 μg/m3 (26) 26.0
 
Jan. 17, 2020, 3 p.m. 26.1 ppb (24) 8.9 ppb (8) N/A 17.0 ppb (16) N/A N/A 1.0 ppb (1) N/A N/A 8.3 μg/m3 (35) 35.0
 
Jan. 17, 2020, 2 p.m. 16.2 ppb (15) 3.5 ppb (3) N/A 13.0 ppb (12) N/A N/A 3.0 ppb (2) N/A N/A 7.6 μg/m3 (32) 32.0
 
Jan. 17, 2020, 1 p.m. 18.2 ppb (17) 5.6 ppb (5) N/A 13.0 ppb (12) N/A N/A 2.0 ppb (2) N/A N/A 8.9 μg/m3 (37) 37.0
 
Jan. 17, 2020, noon 31.4 ppb (29) 18.3 ppb (17) N/A 13.0 ppb (12) N/A N/A 0.0 ppb (0) N/A N/A 13.4 μg/m3 (53) 53.0
 
Jan. 17, 2020, 11 a.m. 44.8 ppb (41) 30.4 ppb (28) N/A 14.0 ppb (13) N/A N/A 0.0 ppb (0) N/A N/A 18.5 μg/m3 (64) 64.0
 
Jan. 17, 2020, 10 a.m. 41.3 ppb (38) 26.6 ppb (25) N/A 15.0 ppb (14) N/A N/A 0.0 ppb (0) N/A N/A 18.4 μg/m3 (64) 64.0
 
Jan. 17, 2020, 9 a.m. 45.4 ppb (42) 31.4 ppb (29) N/A 14.0 ppb (13) N/A N/A 0.0 ppb (0) N/A N/A 21.3 μg/m3 (70) 70.0
 
Jan. 17, 2020, 7 a.m. 59.0 ppb (55) 42.9 ppb (40) N/A 16.0 ppb (15) N/A N/A 0.0 ppb (0) N/A N/A 17.6 μg/m3 (62) 62.0
 
Jan. 17, 2020, 6 a.m. 69.8 ppb (67) 49.0 ppb (45) N/A 21.0 ppb (19) N/A N/A 0.0 ppb (0) N/A N/A 16.2 μg/m3 (59) 67.0
 
Jan. 17, 2020, 5 a.m. 38.6 ppb (36) 23.3 ppb (22) N/A 15.0 ppb (14) N/A N/A 0.0 ppb (0) N/A N/A 12.0 μg/m3 (50) 50.0
 
Jan. 17, 2020, 4 a.m. 39.3 ppb (36) 23.3 ppb (22) N/A 16.0 ppb (15) N/A N/A 0.0 ppb (0) N/A N/A 11.6 μg/m3 (48) 48.0
 
Jan. 17, 2020, 3 a.m. 39.5 ppb (37) 21.3 ppb (20) N/A 18.0 ppb (17) N/A N/A 0.0 ppb (0) N/A N/A 11.3 μg/m3 (47) 47.0
 
Jan. 17, 2020, 2 a.m. 40.0 ppb (37) 20.6 ppb (19) N/A 19.0 ppb (18) N/A N/A 0.0 ppb (0) N/A N/A 9.4 μg/m3 (39) 39.0
 
Jan. 17, 2020, 1 a.m. 43.0 ppb (40) 17.6 ppb (16) N/A 25.0 ppb (23) N/A N/A 1.0 ppb (1) N/A N/A 7.2 μg/m3 (30) 40.0
 
Jan. 17, 2020, midnight 51.1 ppb (47) 26.8 ppb (25) N/A 24.0 ppb (22) N/A N/A 10.0 ppb (8) N/A N/A 6.5 μg/m3 (27) 47.0
 
Jan. 16, 2020, 11 p.m. 19.2 ppb (18) 6.3 ppb (6) N/A 13.0 ppb (12) N/A N/A 21.0 ppb (16) N/A N/A 5.3 μg/m3 (22) 22.0
 
Jan. 16, 2020, 10 p.m. 29.4 ppb (27) 16.2 ppb (15) N/A 13.0 ppb (12) N/A N/A 22.0 ppb (17) N/A N/A 4.3 μg/m3 (18) 27.0
 
Jan. 16, 2020, 9 p.m. 59.7 ppb (56) 36.2 ppb (34) N/A 23.0 ppb (21) N/A N/A 14.0 ppb (11) N/A N/A 4.4 μg/m3 (18) 56.0
 
Jan. 16, 2020, 8 p.m. 59.3 ppb (56) 35.8 ppb (33) N/A 24.0 ppb (22) N/A N/A 15.0 ppb (12) N/A N/A 4.5 μg/m3 (19) 56.0
 
Jan. 16, 2020, 6 p.m. 68.2 ppb (65) 41.8 ppb (39) N/A 26.0 ppb (24) N/A N/A 9.0 ppb (7) N/A N/A 5.0 μg/m3 (21) 65.0
 
Jan. 16, 2020, 5 p.m. 14.8 ppb (14) 2.3 ppb (2) N/A 13.0 ppb (12) N/A N/A 17.0 ppb (13) N/A N/A 4.8 μg/m3 (20) 20.0
 
Jan. 16, 2020, 4 p.m. 26.3 ppb (24) 6.9 ppb (6) N/A 19.0 ppb (18) N/A N/A 12.0 ppb (9) N/A N/A 5.5 μg/m3 (23) 24.0
 
Jan. 16, 2020, 3 p.m. 23.5 ppb (22) 4.9 ppb (5) N/A 19.0 ppb (18) N/A N/A 14.0 ppb (11) N/A N/A 3.6 μg/m3 (15) 22.0
 
Jan. 16, 2020, 2 p.m. 13.4 ppb (12) 1.1 ppb (1) N/A 12.0 ppb (11) N/A N/A 21.0 ppb (16) N/A N/A 2.9 μg/m3 (12) 16.0
 
Jan. 16, 2020, 1 p.m. 59.4 ppb (56) 31.1 ppb (29) N/A 28.0 ppb (26) N/A N/A 8.0 ppb (6) N/A N/A 4.0 μg/m3 (17) 56.0
 
Jan. 15, 2020, 5 p.m. 16.7 ppb (15) 3.0 ppb (3) N/A 14.0 ppb (13) N/A N/A 19.0 ppb (15) N/A N/A 3.5 μg/m3 (15) 15.0
 
Jan. 15, 2020, 4 p.m. 23.7 ppb (22) 5.2 ppb (5) N/A 19.0 ppb (18) N/A N/A 13.0 ppb (10) N/A N/A 3.5 μg/m3 (15) 22.0
 
Jan. 15, 2020, 3 p.m. 10.7 ppb (10) 0.8 ppb (1) N/A 10.0 ppb (9) N/A N/A 19.0 ppb (15) N/A N/A 3.3 μg/m3 (14) 15.0
 
Jan. 15, 2020, 2 p.m. 13.4 ppb (12) 1.4 ppb (1) N/A 12.0 ppb (11) N/A N/A 12.0 ppb (9) N/A N/A 3.8 μg/m3 (16) 16.0
 
Jan. 15, 2020, 1 p.m. 23.0 ppb (21) 6.8 ppb (6) N/A 16.0 ppb (15) N/A N/A 7.0 ppb (5) N/A N/A 4.8 μg/m3 (20) 21.0
 
Jan. 15, 2020, noon 12.5 ppb (12) 2.1 ppb (2) N/A 10.0 ppb (9) N/A N/A 10.0 ppb (8) N/A N/A 5.1 μg/m3 (21) 21.0
 
Jan. 15, 2020, 11 a.m. 13.7 ppb (13) 2.0 ppb (2) N/A 12.0 ppb (11) N/A N/A 5.0 ppb (4) N/A N/A 6.5 μg/m3 (27) 27.0
 
Jan. 15, 2020, 8 a.m. 13.2 ppb (12) 1.9 ppb (2) N/A 11.0 ppb (10) N/A N/A 9.0 ppb (7) N/A N/A 5.9 μg/m3 (25) 25.0
 
Jan. 15, 2020, 7 a.m. 14.3 ppb (13) 1.5 ppb (1) N/A 13.0 ppb (12) N/A N/A 12.0 ppb (9) N/A N/A 5.5 μg/m3 (23) 23.0
 
Jan. 15, 2020, 6 a.m. 18.1 ppb (17) 1.7 ppb (2) N/A 16.0 ppb (15) N/A N/A 8.0 ppb (6) N/A N/A 6.5 μg/m3 (27) 27.0
 
Jan. 15, 2020, 5 a.m. 26.8 ppb (25) 6.0 ppb (6) N/A 21.0 ppb (19) N/A N/A 11.0 ppb (8) N/A N/A 5.4 μg/m3 (23) 25.0
 
Jan. 15, 2020, 4 a.m. 21.8 ppb (20) 5.1 ppb (5) N/A 17.0 ppb (16) N/A N/A 16.0 ppb (12) N/A N/A 5.1 μg/m3 (21) 21.0
 
Jan. 15, 2020, 3 a.m. 13.8 ppb (13) 1.9 ppb (2) N/A 12.0 ppb (11) N/A N/A 22.0 ppb (17) N/A N/A 5.8 μg/m3 (24) 24.0
 
Jan. 15, 2020, 2 a.m. 16.8 ppb (16) 3.1 ppb (3) N/A 14.0 ppb (13) N/A N/A 22.0 ppb (17) N/A N/A 5.5 μg/m3 (23) 23.0
 
Jan. 15, 2020, 1 a.m. 23.0 ppb (21) 6.8 ppb (6) N/A 16.0 ppb (15) N/A N/A 21.0 ppb (16) N/A N/A 4.2 μg/m3 (18) 21.0
 
Jan. 15, 2020, midnight 44.5 ppb (41) 20.7 ppb (19) N/A 24.0 ppb (22) N/A N/A 19.0 ppb (15) N/A N/A 3.7 μg/m3 (15) 41.0
 
Jan. 14, 2020, 11 p.m. 35.9 ppb (33) 19.3 ppb (18) N/A 17.0 ppb (16) N/A N/A 25.0 ppb (19) N/A N/A 3.4 μg/m3 (14) 33.0
 
Jan. 14, 2020, 10 p.m. 32.9 ppb (30) 19.0 ppb (18) N/A 14.0 ppb (13) N/A N/A 27.0 ppb (21) N/A N/A 3.3 μg/m3 (14) 30.0
 
Jan. 14, 2020, 9 p.m. 35.6 ppb (33) 20.2 ppb (19) N/A 15.0 ppb (14) N/A N/A 25.0 ppb (19) N/A N/A 3.3 μg/m3 (14) 33.0
 
Jan. 14, 2020, 8 p.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (18) N/A N/A 3.6 μg/m3 (15) 18.0
 
Jan. 14, 2020, 7 p.m. 44.0 ppb (41) 25.4 ppb (24) N/A 19.0 ppb (18) N/A N/A 18.0 ppb (14) N/A N/A 4.2 μg/m3 (18) 41.0
 
Jan. 14, 2020, 6 p.m. 49.8 ppb (46) 30.1 ppb (28) N/A 20.0 ppb (19) N/A N/A 14.0 ppb (11) N/A N/A 5.0 μg/m3 (21) 46.0
 
Jan. 14, 2020, 5 p.m. 72.7 ppb (70) 45.4 ppb (42) N/A 27.0 ppb (25) N/A N/A 9.0 ppb (7) N/A N/A 4.8 μg/m3 (20) 70.0
 
Jan. 14, 2020, 4 p.m. 67.8 ppb (65) 39.7 ppb (37) N/A 28.0 ppb (26) N/A N/A 7.0 ppb (5) N/A N/A 3.9 μg/m3 (16) 65.0
 
Jan. 14, 2020, 3 p.m. 70.6 ppb (68) 42.2 ppb (39) N/A 28.0 ppb (26) N/A N/A 7.0 ppb (5) N/A N/A 3.8 μg/m3 (16) 68.0
 
Jan. 14, 2020, 2 p.m. 59.6 ppb (56) 32.7 ppb (30) N/A 27.0 ppb (25) N/A N/A 8.0 ppb (6) N/A N/A 3.8 μg/m3 (16) 56.0
 
Jan. 14, 2020, 1 p.m. 49.8 ppb (46) 26.3 ppb (24) N/A 23.0 ppb (21) N/A N/A 12.0 ppb (9) N/A N/A 3.5 μg/m3 (15) 46.0
 
Jan. 14, 2020, noon 23.3 ppb (22) 8.9 ppb (8) N/A 14.0 ppb (13) N/A N/A 19.0 ppb (15) 14.1 ppb (177) N/A 2.8 μg/m3 (12) 177.0
 
Jan. 14, 2020, 11 a.m. 13.6 ppb (13) 2.4 ppb (2) N/A 11.0 ppb (10) N/A N/A 23.0 ppb (18) N/A N/A 2.4 μg/m3 (10) 18.0
 
Jan. 14, 2020, 10 a.m. 17.3 ppb (16) 5.0 ppb (5) N/A 12.0 ppb (11) N/A N/A 23.0 ppb (18) N/A N/A 2.3 μg/m3 (10) 18.0
 
Jan. 14, 2020, 9 a.m. 19.2 ppb (18) 7.5 ppb (7) N/A 12.0 ppb (11) N/A N/A 19.0 ppb (15) 9.2 ppb (97) N/A 2.6 μg/m3 (11) 97.0
 
Jan. 14, 2020, 8 a.m. 15.2 ppb (14) 3.7 ppb (3) N/A 12.0 ppb (11) N/A N/A 18.0 ppb (14) N/A N/A 2.9 μg/m3 (12) 14.0
 
Jan. 14, 2020, 7 a.m. 14.6 ppb (14) 4.3 ppb (4) N/A 10.0 ppb (9) N/A N/A 18.0 ppb (14) N/A N/A 3.1 μg/m3 (13) 14.0
 
Jan. 14, 2020, 6 a.m. 12.4 ppb (11) 2.2 ppb (2) N/A 10.0 ppb (9) N/A N/A 15.0 ppb (12) N/A N/A 4.6 μg/m3 (19) 19.0
 
Jan. 14, 2020, 5 a.m. 28.8 ppb (27) 11.9 ppb (11) N/A 17.0 ppb (16) N/A N/A 11.0 ppb (8) N/A N/A 5.9 μg/m3 (25) 27.0
 
Jan. 14, 2020, 4 a.m. 32.9 ppb (30) 14.1 ppb (13) N/A 19.0 ppb (18) N/A N/A 11.0 ppb (8) N/A N/A 5.6 μg/m3 (23) 30.0
 
Jan. 14, 2020, 3 a.m. 33.9 ppb (31) 14.3 ppb (13) N/A 20.0 ppb (19) N/A N/A 9.0 ppb (7) N/A N/A 6.1 μg/m3 (25) 31.0
 
Jan. 14, 2020, 2 a.m. 42.0 ppb (39) 20.3 ppb (19) N/A 22.0 ppb (20) N/A N/A 9.0 ppb (7) N/A N/A 4.9 μg/m3 (20) 39.0
 
Jan. 14, 2020, 1 a.m. 42.2 ppb (39) 20.5 ppb (19) N/A 22.0 ppb (20) N/A N/A 11.0 ppb (8) N/A N/A 4.1 μg/m3 (17) 39.0
 
Jan. 14, 2020, midnight 41.5 ppb (38) 18.7 ppb (17) N/A 23.0 ppb (21) N/A N/A 11.0 ppb (8) N/A N/A 3.7 μg/m3 (15) 38.0
 
Jan. 13, 2020, 11 p.m. 29.6 ppb (27) 11.5 ppb (11) N/A 18.0 ppb (17) N/A N/A 13.0 ppb (10) N/A N/A 3.6 μg/m3 (15) 27.0
 
Jan. 13, 2020, 10 p.m. 26.0 ppb (24) 10.3 ppb (10) N/A 16.0 ppb (15) N/A N/A 16.0 ppb (12) N/A N/A 4.6 μg/m3 (19) 24.0
 
Jan. 13, 2020, 9 p.m. 27.0 ppb (25) 10.9 ppb (10) N/A 16.0 ppb (15) N/A N/A 17.0 ppb (13) N/A N/A 3.7 μg/m3 (15) 25.0
 
Jan. 13, 2020, 8 p.m. 45.1 ppb (42) 21.8 ppb (20) N/A 23.0 ppb (21) N/A N/A 13.0 ppb (10) N/A N/A 3.7 μg/m3 (15) 42.0
 
Jan. 13, 2020, 7 p.m. 51.8 ppb (48) 27.4 ppb (25) N/A 24.0 ppb (22) N/A N/A 13.0 ppb (10) N/A N/A 3.8 μg/m3 (16) 48.0
 
Jan. 13, 2020, 6 p.m. 37.2 ppb (34) 15.4 ppb (14) N/A 22.0 ppb (20) N/A N/A 15.0 ppb (12) N/A N/A 3.7 μg/m3 (15) 34.0
 
Jan. 13, 2020, 5 p.m. 39.0 ppb (36) 18.2 ppb (17) N/A 21.0 ppb (19) N/A N/A 13.0 ppb (10) N/A N/A 4.0 μg/m3 (17) 36.0
 
Jan. 13, 2020, 4 p.m. 44.8 ppb (41) 21.7 ppb (20) N/A 23.0 ppb (21) N/A N/A 11.0 ppb (8) N/A N/A 4.0 μg/m3 (17) 41.0
 
Jan. 13, 2020, 3 p.m. 30.1 ppb (28) 10.7 ppb (10) N/A 19.0 ppb (18) N/A N/A 15.0 ppb (12) N/A N/A 3.8 μg/m3 (16) 28.0
 
Jan. 13, 2020, 2 p.m. 53.8 ppb (50) 28.8 ppb (27) N/A 25.0 ppb (23) N/A N/A 11.0 ppb (8) N/A N/A 4.2 μg/m3 (18) 50.0
 
Jan. 13, 2020, 1 p.m. 39.9 ppb (37) 18.6 ppb (17) N/A 21.0 ppb (19) N/A N/A 15.0 ppb (12) N/A N/A 4.1 μg/m3 (17) 37.0
 
Jan. 13, 2020, noon 27.6 ppb (26) 12.3 ppb (11) N/A 15.0 ppb (14) N/A N/A 19.0 ppb (15) N/A N/A 4.1 μg/m3 (17) 26.0
 
Jan. 13, 2020, 11 a.m. 13.9 ppb (13) 5.5 ppb (5) N/A 8.0 ppb (7) N/A N/A 27.0 ppb (21) 5.5 ppb (60) N/A 3.4 μg/m3 (14) 60.0
 
Jan. 13, 2020, 10 a.m. 9.9 ppb (9) 3.6 ppb (3) N/A 6.0 ppb (6) N/A N/A 30.0 ppb (23) 5.5 ppb (60) N/A 3.3 μg/m3 (14) 60.0
 
Jan. 13, 2020, 9 a.m. 7.9 ppb (7) 2.8 ppb (3) N/A 5.0 ppb (5) N/A N/A 30.0 ppb (23) 12.9 ppb (157) N/A 3.5 μg/m3 (15) 157.0
 
Jan. 13, 2020, 8 a.m. 6.1 ppb (6) 2.1 ppb (2) N/A 4.0 ppb (4) N/A N/A 32.0 ppb (25) 9.8 ppb (105) N/A 3.2 μg/m3 (13) 105.0
 
Jan. 13, 2020, 7 a.m. 5.8 ppb (5) 2.0 ppb (2) N/A 4.0 ppb (4) N/A N/A 31.0 ppb (24) N/A N/A 3.3 μg/m3 (14) 24.0
 
Jan. 13, 2020, 6 a.m. 9.7 ppb (9) 3.9 ppb (4) N/A 6.0 ppb (6) N/A N/A 30.0 ppb (23) N/A N/A 3.8 μg/m3 (16) 23.0
 
Jan. 13, 2020, 5 a.m. 12.5 ppb (12) 5.5 ppb (5) N/A 7.0 ppb (6) N/A N/A 30.0 ppb (23) N/A N/A 3.4 μg/m3 (14) 23.0
 
Jan. 13, 2020, 4 a.m. 17.5 ppb (16) 6.6 ppb (6) N/A 11.0 ppb (10) N/A N/A 24.0 ppb (18) N/A N/A 4.3 μg/m3 (18) 18.0
 
Jan. 13, 2020, 3 a.m. 23.7 ppb (22) 10.2 ppb (9) N/A 13.0 ppb (12) N/A N/A 21.0 ppb (16) N/A N/A 5.2 μg/m3 (22) 22.0
 
Jan. 13, 2020, 2 a.m. 29.3 ppb (27) 12.5 ppb (12) N/A 17.0 ppb (16) N/A N/A 21.0 ppb (16) N/A N/A 5.2 μg/m3 (22) 27.0
 
Jan. 13, 2020, 1 a.m. 25.2 ppb (23) 9.8 ppb (9) N/A 15.0 ppb (14) N/A N/A 25.0 ppb (19) N/A N/A 4.5 μg/m3 (19) 23.0
 
Jan. 13, 2020, midnight 19.9 ppb (18) 8.6 ppb (8) N/A 11.0 ppb (10) N/A N/A 28.0 ppb (22) N/A N/A 4.5 μg/m3 (19) 22.0
 
Jan. 12, 2020, 11 p.m. 17.1 ppb (16) 7.9 ppb (7) N/A 9.0 ppb (8) N/A N/A 30.0 ppb (23) N/A N/A 3.5 μg/m3 (15) 23.0
 
Jan. 12, 2020, 10 p.m. 17.3 ppb (16) 9.1 ppb (8) N/A 8.0 ppb (7) N/A N/A 32.0 ppb (25) N/A N/A 2.9 μg/m3 (12) 25.0
 
Jan. 12, 2020, 9 p.m. 15.7 ppb (15) 8.0 ppb (7) N/A 8.0 ppb (7) N/A N/A 31.0 ppb (24) N/A N/A 2.9 μg/m3 (12) 24.0
 
Jan. 12, 2020, 8 p.m. 17.7 ppb (16) 8.6 ppb (8) N/A 9.0 ppb (8) N/A N/A 30.0 ppb (23) N/A N/A 3.2 μg/m3 (13) 23.0
 
Jan. 12, 2020, 7 p.m. 16.7 ppb (15) 7.5 ppb (7) N/A 9.0 ppb (8) N/A N/A 33.0 ppb (25) N/A N/A 2.9 μg/m3 (12) 25.0
 
Jan. 12, 2020, 6 p.m. 19.5 ppb (18) 8.7 ppb (8) N/A 11.0 ppb (10) N/A N/A 30.0 ppb (23) N/A N/A 3.0 μg/m3 (12) 23.0
 
Jan. 12, 2020, 5 p.m. 17.8 ppb (16) 7.4 ppb (7) N/A 10.0 ppb (9) N/A N/A 29.0 ppb (22) N/A N/A 2.7 μg/m3 (11) 22.0
 
Jan. 12, 2020, 4 p.m. 10.2 ppb (9) 3.5 ppb (3) N/A 7.0 ppb (6) N/A N/A 31.0 ppb (24) N/A N/A 2.6 μg/m3 (11) 24.0
 
Jan. 12, 2020, 3 p.m. 12.3 ppb (11) 3.6 ppb (3) N/A 9.0 ppb (8) N/A N/A 29.0 ppb (22) N/A N/A 2.5 μg/m3 (10) 22.0
 
Jan. 12, 2020, 2 p.m. 4.4 ppb (4) 0.7 ppb (1) N/A 4.0 ppb (4) N/A N/A 32.0 ppb (25) N/A N/A 2.3 μg/m3 (10) 25.0
 
Jan. 12, 2020, 1 p.m. 3.8 ppb (4) 0.7 ppb (1) N/A 3.0 ppb (3) N/A N/A 32.0 ppb (25) N/A N/A 2.4 μg/m3 (10) 25.0
 
Jan. 12, 2020, noon 2.5 ppb (2) 0.2 ppb (0) N/A 2.0 ppb (2) N/A N/A 34.0 ppb (26) N/A N/A 2.1 μg/m3 (9) 26.0
 
Jan. 12, 2020, 11 a.m. 2.1 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A N/A 33.0 ppb (25) N/A N/A 2.1 μg/m3 (9) 25.0
 
Jan. 12, 2020, 10 a.m. 3.2 ppb (3) 0.6 ppb (1) N/A 3.0 ppb (3) N/A N/A 32.0 ppb (25) N/A N/A 2.1 μg/m3 (9) 25.0
 
Jan. 12, 2020, 9 a.m. 3.8 ppb (4) 0.2 ppb (0) N/A 4.0 ppb (4) N/A N/A 30.0 ppb (23) N/A N/A 2.3 μg/m3 (10) 23.0
 
Jan. 12, 2020, 8 a.m. 4.4 ppb (4) 0.5 ppb (0) N/A 4.0 ppb (4) N/A N/A 29.0 ppb (22) N/A N/A 2.6 μg/m3 (11) 22.0
 
Jan. 12, 2020, 7 a.m. 9.3 ppb (9) 2.7 ppb (3) N/A 7.0 ppb (6) N/A N/A 29.0 ppb (22) N/A N/A 3.2 μg/m3 (13) 22.0
 
Jan. 12, 2020, 6 a.m. 11.3 ppb (10) 4.2 ppb (4) N/A 7.0 ppb (6) N/A N/A 26.0 ppb (20) N/A N/A 3.6 μg/m3 (15) 20.0
 
Jan. 12, 2020, 5 a.m. 12.5 ppb (12) 4.5 ppb (4) N/A 8.0 ppb (7) N/A N/A 25.0 ppb (19) N/A N/A 3.6 μg/m3 (15) 19.0
 
Jan. 12, 2020, 4 a.m. 12.6 ppb (12) 5.2 ppb (5) N/A 7.0 ppb (6) N/A N/A 28.0 ppb (22) N/A N/A 3.5 μg/m3 (15) 22.0
 
Jan. 12, 2020, 3 a.m. 14.9 ppb (14) 5.9 ppb (5) N/A 9.0 ppb (8) N/A N/A 25.0 ppb (19) N/A N/A 4.4 μg/m3 (18) 19.0
 
Jan. 12, 2020, 2 a.m. 22.6 ppb (21) 9.1 ppb (8) N/A 14.0 ppb (13) N/A N/A 22.0 ppb (17) N/A N/A 5.3 μg/m3 (22) 22.0
 
Jan. 12, 2020, 1 a.m. 24.6 ppb (23) 10.4 ppb (10) N/A 14.0 ppb (13) N/A N/A 21.0 ppb (16) N/A N/A 5.0 μg/m3 (21) 23.0
 
Jan. 12, 2020, midnight 25.8 ppb (24) 9.4 ppb (9) N/A 16.0 ppb (15) N/A N/A 21.0 ppb (16) N/A N/A 4.9 μg/m3 (20) 24.0
 
Jan. 11, 2020, 11 p.m. 27.1 ppb (25) 12.3 ppb (11) N/A 15.0 ppb (14) N/A N/A 24.0 ppb (18) N/A N/A 4.9 μg/m3 (20) 25.0
 
Jan. 11, 2020, 10 p.m. 23.6 ppb (22) 10.8 ppb (10) N/A 13.0 ppb (12) N/A N/A 25.0 ppb (19) N/A N/A 5.2 μg/m3 (22) 22.0
 
Jan. 11, 2020, 9 p.m. 25.4 ppb (24) 11.9 ppb (11) N/A 14.0 ppb (13) N/A N/A 26.0 ppb (20) N/A N/A 5.1 μg/m3 (21) 24.0
 
Jan. 11, 2020, 8 p.m. 23.3 ppb (22) 10.4 ppb (10) N/A 13.0 ppb (12) N/A N/A 27.0 ppb (21) N/A N/A 5.3 μg/m3 (22) 22.0
 
Jan. 11, 2020, 7 p.m. 20.6 ppb (19) 8.0 ppb (7) N/A 13.0 ppb (12) N/A N/A 27.0 ppb (21) N/A N/A 5.2 μg/m3 (22) 22.0
 
Jan. 11, 2020, 6 p.m. 23.3 ppb (22) 9.9 ppb (9) N/A 13.0 ppb (12) N/A N/A 27.0 ppb (21) N/A N/A 5.2 μg/m3 (22) 22.0
 
Jan. 11, 2020, 5 p.m. 26.5 ppb (25) 9.0 ppb (8) N/A 17.0 ppb (16) N/A N/A 22.0 ppb (17) N/A N/A 3.9 μg/m3 (16) 25.0
 
Jan. 11, 2020, 4 p.m. 26.2 ppb (24) 9.5 ppb (9) N/A 17.0 ppb (16) N/A N/A 22.0 ppb (17) N/A N/A 3.0 μg/m3 (12) 24.0
 
Jan. 11, 2020, 3 p.m. 24.9 ppb (23) 10.0 ppb (9) N/A 15.0 ppb (14) N/A N/A 22.0 ppb (17) N/A N/A 2.7 μg/m3 (11) 23.0
 
Jan. 11, 2020, 2 p.m. 14.1 ppb (13) 5.1 ppb (5) N/A 9.0 ppb (8) N/A N/A 26.0 ppb (20) N/A N/A 2.6 μg/m3 (11) 20.0
 
Jan. 11, 2020, noon 8.2 ppb (8) 1.9 ppb (2) N/A 6.0 ppb (6) N/A N/A 30.0 ppb (23) N/A N/A 2.9 μg/m3 (12) 23.0
 
Jan. 11, 2020, 11 a.m. 5.6 ppb (5) 1.0 ppb (1) N/A 5.0 ppb (5) N/A N/A 32.0 ppb (25) N/A N/A 3.1 μg/m3 (13) 25.0
 
Jan. 11, 2020, 10 a.m. 6.8 ppb (6) 1.7 ppb (2) N/A 5.0 ppb (5) N/A N/A 33.0 ppb (25) N/A N/A 2.5 μg/m3 (10) 25.0
 
Jan. 11, 2020, 9 a.m. 6.5 ppb (6) 1.6 ppb (1) N/A 5.0 ppb (5) N/A N/A 33.0 ppb (25) N/A N/A 2.9 μg/m3 (12) 25.0
 
Jan. 11, 2020, 8 a.m. 6.0 ppb (6) 1.7 ppb (2) N/A 4.0 ppb (4) N/A N/A 34.0 ppb (26) 8.9 ppb (94) N/A 3.0 μg/m3 (12) 94.0
 
Jan. 11, 2020, 7 a.m. 3.3 ppb (3) 0.3 ppb (0) N/A 3.0 ppb (3) N/A N/A 36.0 ppb (28) 0.2 ppb (2) N/A 3.7 μg/m3 (15) 28.0
 
Jan. 11, 2020, 6 a.m. 7.1 ppb (7) 1.6 ppb (1) N/A 5.0 ppb (5) N/A N/A 34.0 ppb (26) N/A N/A 3.5 μg/m3 (15) 26.0
 
Jan. 11, 2020, 5 a.m. 10.5 ppb (10) 1.8 ppb (2) N/A 9.0 ppb (8) N/A N/A 30.0 ppb (23) N/A N/A 4.3 μg/m3 (18) 23.0
 
Jan. 11, 2020, 4 a.m. 8.8 ppb (8) 1.7 ppb (2) N/A 7.0 ppb (6) N/A N/A 32.0 ppb (25) N/A N/A 3.9 μg/m3 (16) 25.0
 
Jan. 11, 2020, 3 a.m. 10.8 ppb (10) 2.3 ppb (2) N/A 8.0 ppb (7) N/A N/A 28.0 ppb (22) N/A N/A 4.5 μg/m3 (19) 22.0
 
Jan. 11, 2020, 2 a.m. 12.6 ppb (12) 3.4 ppb (3) 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
 
Jan. 11, 2020, 1 a.m. 10.4 ppb (10) 2.3 ppb (2) N/A 8.0 ppb (7) N/A N/A 23.0 ppb (18) N/A N/A 4.1 μg/m3 (17) 18.0
 
Jan. 11, 2020, midnight 12.6 ppb (12) 3.3 ppb (3) N/A 9.0 ppb (8) N/A N/A 20.0 ppb (15) N/A N/A 3.7 μg/m3 (15) 15.0
 
Jan. 10, 2020, 11 p.m. 21.5 ppb (20) 8.1 ppb (8) N/A 13.0 ppb (12) N/A N/A 17.0 ppb (13) N/A N/A 3.8 μg/m3 (16) 20.0
 
Jan. 10, 2020, 10 p.m. 25.0 ppb (23) 12.5 ppb (12) N/A 12.0 ppb (11) N/A N/A 19.0 ppb (15) N/A N/A 4.0 μg/m3 (17) 23.0
 
Jan. 10, 2020, 9 p.m. 14.5 ppb (13) 5.9 ppb (5) N/A 9.0 ppb (8) N/A N/A 25.0 ppb (19) N/A N/A 3.5 μg/m3 (15) 19.0
 
Jan. 10, 2020, 7 p.m. 7.2 ppb (7) 1.7 ppb (2) N/A 5.0 ppb (5) N/A N/A 29.0 ppb (22) N/A N/A 3.1 μg/m3 (13) 22.0
 
Jan. 10, 2020, 6 p.m. 8.5 ppb (8) 2.7 ppb (3) N/A 6.0 ppb (6) N/A N/A 28.0 ppb (22) N/A N/A 2.8 μg/m3 (12) 22.0
 
Jan. 10, 2020, 5 p.m. 8.0 ppb (7) 2.4 ppb (2) N/A 6.0 ppb (6) N/A N/A 28.0 ppb (22) N/A N/A 2.6 μg/m3 (11) 22.0
 
Jan. 10, 2020, 4 p.m. 13.2 ppb (12) 4.2 ppb (4) N/A 9.0 ppb (8) N/A N/A 23.0 ppb (18) N/A N/A 2.7 μg/m3 (11) 18.0
 
Jan. 10, 2020, 3 p.m. 13.0 ppb (12) 3.3 ppb (3) N/A 10.0 ppb (9) N/A N/A 21.0 ppb (16) N/A N/A 2.9 μg/m3 (12) 16.0
 
Jan. 10, 2020, 2 p.m. 8.7 ppb (8) 1.2 ppb (1) N/A 8.0 ppb (7) N/A N/A 17.0 ppb (13) N/A N/A 3.4 μg/m3 (14) 14.0
 
Jan. 10, 2020, noon 8.9 ppb (8) 1.9 ppb (2) N/A 7.0 ppb (6) N/A N/A 11.0 ppb (8) N/A N/A 4.4 μg/m3 (18) 18.0
 
Jan. 10, 2020, 11 a.m. 5.1 ppb (5) 0.6 ppb (1) N/A 4.0 ppb (4) N/A N/A 14.0 ppb (11) N/A N/A 4.8 μg/m3 (20) 20.0
 
Jan. 10, 2020, 10 a.m. 6.6 ppb (6) 1.0 ppb (1) N/A 6.0 ppb (6) N/A N/A 11.0 ppb (8) N/A N/A 4.6 μg/m3 (19) 19.0
 
Jan. 10, 2020, 9 a.m. 8.5 ppb (8) 2.2 ppb (2) N/A 6.0 ppb (6) N/A N/A 12.0 ppb (9) N/A N/A 4.6 μg/m3 (19) 19.0
 
Jan. 10, 2020, 8 a.m. 11.0 ppb (10) 2.2 ppb (2) N/A 9.0 ppb (8) N/A N/A 9.0 ppb (7) N/A N/A 5.9 μg/m3 (25) 25.0
 
Jan. 10, 2020, 7 a.m. 8.9 ppb (8) 1.2 ppb (1) N/A 8.0 ppb (7) N/A N/A 12.0 ppb (9) N/A N/A 7.2 μg/m3 (30) 30.0
 
Jan. 10, 2020, 6 a.m. 14.2 ppb (13) 2.4 ppb (2) N/A 12.0 ppb (11) N/A N/A 7.0 ppb (5) N/A N/A 8.5 μg/m3 (35) 35.0
 
Jan. 10, 2020, 5 a.m. 17.5 ppb (16) 3.7 ppb (3) N/A 14.0 ppb (13) N/A N/A 4.0 ppb (3) N/A N/A 10.2 μg/m3 (42) 42.0
 
Jan. 10, 2020, 4 a.m. 27.2 ppb (25) 11.7 ppb (11) N/A 16.0 ppb (15) N/A N/A 0.0 ppb (0) N/A N/A 12.8 μg/m3 (52) 52.0
 
Jan. 10, 2020, 3 a.m. 24.2 ppb (22) 7.7 ppb (7) N/A 16.0 ppb (15) N/A N/A 1.0 ppb (1) N/A N/A 10.3 μg/m3 (43) 43.0
 
Jan. 10, 2020, 2 a.m. 18.6 ppb (17) 2.1 ppb (2) N/A 17.0 ppb (16) N/A N/A 5.0 ppb (4) N/A N/A 8.7 μg/m3 (36) 36.0
 
Jan. 10, 2020, 1 a.m. 17.5 ppb (16) 2.4 ppb (2) N/A 15.0 ppb (14) N/A N/A 12.0 ppb (9) N/A N/A 8.0 μg/m3 (33) 33.0
 
Jan. 10, 2020, midnight 35.5 ppb (33) 16.4 ppb (15) N/A 19.0 ppb (18) N/A N/A 10.0 ppb (8) N/A N/A 6.4 μg/m3 (27) 33.0
 
Jan. 9, 2020, 11 p.m. 51.2 ppb (47) 29.2 ppb (27) N/A 22.0 ppb (20) N/A N/A 10.0 ppb (8) N/A N/A 6.7 μg/m3 (28) 47.0
 
Jan. 9, 2020, 10 p.m. 50.3 ppb (47) 29.0 ppb (27) N/A 21.0 ppb (19) N/A N/A 11.0 ppb (8) N/A N/A 7.4 μg/m3 (31) 47.0