AQSQID: 410510080

Site Name: Portland - Se Lafayette

Location: Portland, OR

Reporting: True, Located: True

Current AQI: 89.0

Portland OR, US: 45.496641, -122.602877

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
Sept. 22, 2019, 8 a.m. 37.0 ppb (34) 30.5 ppb (28) N/A 7.0 ppb (6) N/A 1.0 ppb (1) 1.0 ppb (1) N/A N/A 30.5 μg/m3 (89) 89.0
 
Sept. 22, 2019, 7 a.m. 33.5 ppb (31) 26.0 ppb (24) N/A 7.0 ppb (6) N/A 1.0 ppb (1) 1.0 ppb (1) N/A N/A 18.4 μg/m3 (64) 64.0
 
Sept. 22, 2019, 6 a.m. 30.4 ppb (28) 21.0 ppb (19) N/A 9.0 ppb (8) N/A 1.0 ppb (1) 1.0 ppb (1) N/A N/A 16.6 μg/m3 (60) 60.0
 
Sept. 22, 2019, 5 a.m. 34.8 ppb (32) 25.6 ppb (24) N/A 9.0 ppb (8) N/A 1.0 ppb (1) 1.0 ppb (1) N/A N/A 17.6 μg/m3 (62) 62.0
 
Sept. 22, 2019, 4 a.m. 33.4 ppb (31) 23.5 ppb (22) N/A 10.0 ppb (9) N/A 1.0 ppb (1) 1.0 ppb (1) N/A N/A 17.0 μg/m3 (61) 61.0
 
Sept. 22, 2019, 3 a.m. 20.5 ppb (19) 8.3 ppb (8) N/A 12.0 ppb (11) N/A 0.0 ppb (0) 1.0 ppb (1) N/A N/A 9.1 μg/m3 (38) 38.0
 
Sept. 22, 2019, 2 a.m. 12.0 ppb (11) 2.0 ppb (2) N/A 10.0 ppb (9) N/A 0.0 ppb (0) 6.0 ppb (5) N/A N/A 3.7 μg/m3 (15) 15.0
 
Sept. 22, 2019, 1 a.m. 4.6 ppb (4) 1.6 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 17.0 ppb (13) N/A N/A 2.6 μg/m3 (11) 13.0
 
Sept. 22, 2019, midnight 5.1 ppb (5) 2.2 ppb (2) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 17.0 ppb (13) N/A N/A 2.5 μg/m3 (10) 13.0
 
Sept. 21, 2019, 11 p.m. 6.8 ppb (6) 2.5 ppb (2) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 23.0 ppb (18) N/A N/A 3.7 μg/m3 (15) 18.0
 
Sept. 21, 2019, 10 p.m. 7.6 ppb (7) 2.7 ppb (3) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 24.0 ppb (18) N/A N/A 3.9 μg/m3 (16) 18.0
 
Sept. 21, 2019, 9 p.m. 9.7 ppb (9) 3.6 ppb (3) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 22.0 ppb (17) 1.1 ppb (12) N/A 4.5 μg/m3 (19) 19.0
 
Sept. 21, 2019, 8 p.m. 9.7 ppb (9) 3.5 ppb (3) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 22.0 ppb (17) N/A N/A 4.9 μg/m3 (20) 20.0
 
Sept. 21, 2019, 7 p.m. 6.5 ppb (6) 2.7 ppb (3) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 24.0 ppb (18) N/A N/A 3.9 μg/m3 (16) 18.0
 
Sept. 21, 2019, 6 p.m. 6.9 ppb (6) 2.8 ppb (3) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 20.0 ppb (15) N/A N/A 4.0 μg/m3 (17) 17.0
 
Sept. 21, 2019, 5 p.m. 9.6 ppb (9) 4.3 ppb (4) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 13.0 ppb (10) 7.8 ppb (83) N/A 5.7 μg/m3 (24) 83.0
 
Sept. 21, 2019, 4 p.m. 12.7 ppb (12) 7.3 ppb (7) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 8.0 ppb (6) N/A N/A 5.9 μg/m3 (25) 25.0
 
Sept. 21, 2019, 3 p.m. 33.2 ppb (31) 27.7 ppb (26) N/A 6.0 ppb (6) N/A 1.0 ppb (1) 1.0 ppb (1) N/A N/A 7.6 μg/m3 (32) 32.0
 
Sept. 21, 2019, 2 p.m. 46.2 ppb (43) 41.6 ppb (39) N/A 5.0 ppb (5) N/A 1.0 ppb (1) 1.0 ppb (1) N/A N/A 8.7 μg/m3 (36) 43.0
 
Sept. 21, 2019, 1 p.m. 42.2 ppb (39) 38.2 ppb (35) N/A 4.0 ppb (4) N/A 1.0 ppb (1) 1.0 ppb (1) N/A N/A 9.1 μg/m3 (38) 39.0
 
Sept. 21, 2019, noon 38.3 ppb (35) 34.3 ppb (32) N/A 4.0 ppb (4) N/A 1.0 ppb (1) 1.0 ppb (1) N/A N/A 9.4 μg/m3 (39) 39.0
 
Sept. 21, 2019, 11 a.m. 42.0 ppb (39) 36.7 ppb (34) N/A 5.0 ppb (5) N/A 1.0 ppb (1) 1.0 ppb (1) N/A N/A 9.9 μg/m3 (41) 41.0
 
Sept. 21, 2019, 10 a.m. 38.5 ppb (36) 33.3 ppb (31) N/A 5.0 ppb (5) N/A 1.0 ppb (1) 1.0 ppb (1) N/A N/A 10.6 μg/m3 (44) 44.0
 
Sept. 21, 2019, 9 a.m. 34.7 ppb (32) 27.0 ppb (25) N/A 8.0 ppb (7) N/A 1.0 ppb (1) 1.0 ppb (1) N/A N/A 10.7 μg/m3 (45) 45.0
 
Sept. 21, 2019, 8 a.m. 31.7 ppb (29) 20.4 ppb (19) N/A 11.0 ppb (10) N/A 1.0 ppb (1) 1.0 ppb (1) N/A N/A 10.8 μg/m3 (45) 45.0
 
Sept. 21, 2019, 7 a.m. 30.3 ppb (28) 18.7 ppb (17) N/A 12.0 ppb (11) N/A 0.0 ppb (0) 1.0 ppb (1) N/A N/A 10.6 μg/m3 (44) 44.0
 
Sept. 21, 2019, 6 a.m. 29.9 ppb (28) 20.4 ppb (19) N/A 9.0 ppb (8) N/A 0.0 ppb (0) 1.0 ppb (1) N/A N/A 11.0 μg/m3 (46) 46.0
 
Sept. 21, 2019, 5 a.m. 17.6 ppb (16) 6.2 ppb (6) N/A 11.0 ppb (10) N/A 0.0 ppb (0) 1.0 ppb (1) N/A N/A 9.1 μg/m3 (38) 38.0
 
Sept. 21, 2019, 4 a.m. 17.5 ppb (16) 4.2 ppb (4) N/A 13.0 ppb (12) N/A 0.0 ppb (0) 2.0 ppb (2) N/A N/A 7.4 μg/m3 (31) 31.0
 
Sept. 21, 2019, 3 a.m. 15.7 ppb (15) 2.6 ppb (2) N/A 13.0 ppb (12) N/A 0.0 ppb (0) 3.0 ppb (2) N/A N/A 6.5 μg/m3 (27) 27.0
 
Sept. 21, 2019, 2 a.m. 10.5 ppb (10) 1.4 ppb (1) N/A 9.0 ppb (8) N/A 0.0 ppb (0) 8.0 ppb (6) N/A N/A 5.1 μg/m3 (21) 21.0
 
Sept. 21, 2019, 1 a.m. 7.7 ppb (7) 1.5 ppb (1) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 17.0 ppb (13) 13.4 ppb (165) N/A 4.2 μg/m3 (18) 165.0
 
Sept. 21, 2019, midnight 7.8 ppb (7) 1.8 ppb (2) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 19.0 ppb (15) N/A N/A 4.2 μg/m3 (18) 18.0
 
Sept. 20, 2019, 11 p.m. 7.2 ppb (7) 1.9 ppb (2) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 19.0 ppb (15) 2.1 ppb (23) N/A 4.3 μg/m3 (18) 23.0
 
Sept. 20, 2019, 10 p.m. 5.9 ppb (5) 2.1 ppb (2) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 21.0 ppb (16) N/A N/A 4.1 μg/m3 (17) 17.0
 
Sept. 20, 2019, 9 p.m. 7.8 ppb (7) 2.6 ppb (2) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 17.0 ppb (13) 0.4 ppb (4) N/A 4.4 μg/m3 (18) 18.0
 
Sept. 20, 2019, 8 p.m. 7.9 ppb (7) 2.5 ppb (2) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 15.0 ppb (12) 5.4 ppb (59) N/A 4.5 μg/m3 (19) 59.0
 
Sept. 20, 2019, 7 p.m. 9.7 ppb (9) 3.4 ppb (3) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 14.0 ppb (11) 5.4 ppb (59) N/A 4.1 μg/m3 (17) 59.0
 
Sept. 20, 2019, 6 p.m. 9.1 ppb (8) 3.3 ppb (3) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 16.0 ppb (12) N/A N/A 3.7 μg/m3 (15) 15.0
 
Sept. 20, 2019, 5 p.m. 7.2 ppb (7) 2.1 ppb (2) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 17.0 ppb (13) N/A N/A 2.7 μg/m3 (11) 13.0
 
Sept. 20, 2019, 4 p.m. 8.4 ppb (8) 2.5 ppb (2) N/A 6.0 ppb (6) N/A 0.0 ppb (0) N/A 4.1 ppb (46) N/A 2.6 μg/m3 (11) 46.0
 
Sept. 20, 2019, 3 p.m. 17.6 ppb (16) 7.3 ppb (7) N/A 10.0 ppb (9) N/A 0.0 ppb (0) 3.0 ppb (2) N/A N/A 6.0 μg/m3 (25) 25.0
 
Sept. 20, 2019, 2 p.m. 12.6 ppb (12) 3.7 ppb (3) N/A 9.0 ppb (8) N/A 0.0 ppb (0) 2.0 ppb (2) N/A N/A 6.2 μg/m3 (26) 26.0
 
Sept. 20, 2019, 1 p.m. 9.2 ppb (9) 1.9 ppb (2) N/A 7.0 ppb (6) N/A 0.0 ppb (0) 2.0 ppb (2) N/A N/A 8.1 μg/m3 (34) 34.0
 
Sept. 20, 2019, noon 9.2 ppb (9) 1.7 ppb (2) N/A 8.0 ppb (7) N/A 0.0 ppb (0) 3.0 ppb (2) N/A N/A 7.3 μg/m3 (30) 30.0
 
Sept. 20, 2019, 11 a.m. 7.7 ppb (7) 1.1 ppb (1) N/A 7.0 ppb (6) N/A 0.0 ppb (0) 4.0 ppb (3) N/A N/A 6.1 μg/m3 (25) 25.0
 
Sept. 20, 2019, 10 a.m. 8.2 ppb (8) 1.2 ppb (1) N/A 7.0 ppb (6) N/A 0.0 ppb (0) 6.0 ppb (5) N/A N/A 6.1 μg/m3 (25) 25.0
 
Sept. 20, 2019, 9 a.m. 11.9 ppb (11) 1.9 ppb (2) N/A 10.0 ppb (9) N/A 0.0 ppb (0) 4.0 ppb (3) N/A N/A 7.3 μg/m3 (30) 30.0
 
Sept. 20, 2019, 8 a.m. 12.3 ppb (11) 1.7 ppb (2) N/A 11.0 ppb (10) N/A 0.0 ppb (0) 3.0 ppb (2) N/A N/A 7.5 μg/m3 (31) 31.0
 
Sept. 20, 2019, 7 a.m. 8.1 ppb (8) 1.2 ppb (1) N/A 7.0 ppb (6) N/A 0.0 ppb (0) 7.0 ppb (5) N/A N/A 5.0 μg/m3 (21) 21.0
 
Sept. 20, 2019, 6 a.m. 8.1 ppb (8) 1.3 ppb (1) N/A 7.0 ppb (6) N/A 0.0 ppb (0) 11.0 ppb (8) N/A N/A 4.4 μg/m3 (18) 18.0
 
Sept. 20, 2019, 5 a.m. 12.8 ppb (12) 2.0 ppb (2) N/A 11.0 ppb (10) N/A 0.0 ppb (0) 8.0 ppb (6) N/A N/A 4.4 μg/m3 (18) 18.0
 
Sept. 20, 2019, 4 a.m. 12.8 ppb (12) 1.3 ppb (1) N/A 12.0 ppb (11) N/A 0.0 ppb (0) 14.0 ppb (11) N/A N/A 5.6 μg/m3 (23) 23.0
 
Sept. 20, 2019, 3 a.m. 10.1 ppb (9) 1.1 ppb (1) N/A 9.0 ppb (8) N/A 0.0 ppb (0) 18.0 ppb (14) N/A N/A 6.4 μg/m3 (27) 27.0
 
Sept. 20, 2019, 2 a.m. 9.6 ppb (9) 1.1 ppb (1) N/A 8.0 ppb (7) N/A 0.0 ppb (0) 20.0 ppb (15) N/A N/A 5.5 μg/m3 (23) 23.0
 
Sept. 20, 2019, 1 a.m. 8.3 ppb (8) 1.6 ppb (1) N/A 7.0 ppb (6) N/A 0.0 ppb (0) 24.0 ppb (18) 10.1 ppb (110) N/A 3.2 μg/m3 (13) 110.0
 
Sept. 20, 2019, midnight 6.1 ppb (6) 1.8 ppb (2) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 28.0 ppb (22) N/A N/A 3.1 μg/m3 (13) 22.0
 
Sept. 19, 2019, 11 p.m. 6.7 ppb (6) 2.4 ppb (2) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 28.0 ppb (22) N/A N/A 3.5 μg/m3 (15) 22.0
 
Sept. 19, 2019, 10 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 28.0 ppb (22) N/A N/A 3.6 μg/m3 (15) 22.0
 
Sept. 19, 2019, 9 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 26.0 ppb (20) N/A N/A 5.1 μg/m3 (21) 21.0
 
Sept. 19, 2019, 8 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 22.0 ppb (17) N/A N/A 6.5 μg/m3 (27) 27.0
 
Sept. 19, 2019, 7 p.m. 10.1 ppb (9) 1.3 ppb (1) N/A 9.0 ppb (8) N/A 0.0 ppb (0) 18.0 ppb (14) 1.6 ppb (18) N/A 8.2 μg/m3 (34) 34.0
 
Sept. 19, 2019, 6 p.m. 16.4 ppb (15) 1.6 ppb (1) N/A 15.0 ppb (14) N/A 0.0 ppb (0) 13.0 ppb (10) N/A N/A 9.4 μg/m3 (39) 39.0
 
Sept. 19, 2019, 5 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 8.0 ppb (6) N/A N/A 8.1 μg/m3 (34) 34.0
 
Sept. 19, 2019, 4 p.m. N/A 7.3 ppb (7) N/A N/A N/A 0.0 ppb (0) 5.0 ppb (4) N/A N/A 7.7 μg/m3 (32) 32.0
 
Sept. 19, 2019, 3 p.m. 19.5 ppb (18) 9.3 ppb (9) N/A 10.0 ppb (9) N/A 0.0 ppb (0) 3.0 ppb (2) N/A N/A 6.8 μg/m3 (28) 28.0
 
Sept. 19, 2019, 2 p.m. 21.6 ppb (20) 10.2 ppb (9) N/A 11.0 ppb (10) N/A 0.0 ppb (0) 1.0 ppb (1) N/A N/A 5.1 μg/m3 (21) 21.0
 
Sept. 19, 2019, 1 p.m. 12.3 ppb (11) 2.6 ppb (2) N/A 10.0 ppb (9) N/A 0.0 ppb (0) 3.0 ppb (2) N/A N/A 4.8 μg/m3 (20) 20.0
 
Sept. 19, 2019, noon 11.0 ppb (10) 2.6 ppb (2) N/A 8.0 ppb (7) N/A 0.0 ppb (0) 3.0 ppb (2) 8.9 ppb (94) N/A 5.2 μg/m3 (22) 94.0
 
Sept. 19, 2019, 11 a.m. 8.9 ppb (8) 1.9 ppb (2) N/A 7.0 ppb (6) N/A 0.0 ppb (0) 4.0 ppb (3) N/A N/A 4.7 μg/m3 (20) 20.0
 
Sept. 19, 2019, 10 a.m. 15.6 ppb (14) 4.5 ppb (4) N/A 11.0 ppb (10) N/A 0.0 ppb (0) 1.0 ppb (1) N/A N/A 6.4 μg/m3 (27) 27.0
 
Sept. 19, 2019, 9 a.m. 25.8 ppb (24) 16.0 ppb (15) N/A 10.0 ppb (9) N/A 0.0 ppb (0) 1.0 ppb (1) N/A N/A 8.9 μg/m3 (37) 37.0
 
Sept. 19, 2019, 8 a.m. 31.5 ppb (29) 23.4 ppb (22) N/A 8.0 ppb (7) N/A 1.0 ppb (1) 1.0 ppb (1) N/A N/A 11.6 μg/m3 (48) 48.0
 
Sept. 19, 2019, 7 a.m. 30.6 ppb (28) 20.2 ppb (19) N/A 10.0 ppb (9) N/A 1.0 ppb (1) 1.0 ppb (1) N/A N/A 12.8 μg/m3 (52) 52.0
 
Sept. 19, 2019, 6 a.m. 39.5 ppb (37) 30.2 ppb (28) N/A 9.0 ppb (8) N/A 1.0 ppb (1) 1.0 ppb (1) N/A N/A 12.7 μg/m3 (51) 51.0
 
Sept. 19, 2019, 5 a.m. 32.4 ppb (30) 22.5 ppb (21) N/A 10.0 ppb (9) N/A 1.0 ppb (1) 1.0 ppb (1) N/A N/A 12.4 μg/m3 (51) 51.0
 
Sept. 19, 2019, 4 a.m. 30.3 ppb (28) 17.9 ppb (17) N/A 12.0 ppb (11) N/A 0.0 ppb (0) 1.0 ppb (1) N/A N/A 9.5 μg/m3 (40) 40.0
 
Sept. 19, 2019, 3 a.m. 22.6 ppb (21) 7.1 ppb (7) N/A 15.0 ppb (14) N/A 0.0 ppb (0) 2.0 ppb (2) N/A N/A 5.6 μg/m3 (23) 23.0
 
Sept. 19, 2019, 2 a.m. 14.2 ppb (13) 1.9 ppb (2) N/A 12.0 ppb (11) N/A 0.0 ppb (0) 12.0 ppb (9) N/A N/A 3.3 μg/m3 (14) 14.0
 
Sept. 19, 2019, 1 a.m. 15.4 ppb (14) 2.9 ppb (3) N/A 13.0 ppb (12) N/A 0.0 ppb (0) 17.0 ppb (13) N/A N/A 3.2 μg/m3 (13) 14.0
 
Sept. 19, 2019, midnight 15.1 ppb (14) 3.7 ppb (3) N/A 11.0 ppb (10) N/A 0.0 ppb (0) 19.0 ppb (15) N/A N/A 3.0 μg/m3 (12) 15.0
 
Sept. 18, 2019, 11 p.m. 11.4 ppb (11) 2.9 ppb (3) N/A 8.0 ppb (7) N/A 0.0 ppb (0) 22.0 ppb (17) N/A N/A 2.6 μg/m3 (11) 17.0
 
Sept. 18, 2019, 10 p.m. 9.3 ppb (9) 3.1 ppb (3) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 24.0 ppb (18) N/A N/A 2.2 μg/m3 (9) 18.0
 
Sept. 18, 2019, 9 p.m. 9.6 ppb (9) 3.4 ppb (3) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 23.0 ppb (18) N/A N/A 2.1 μg/m3 (9) 18.0
 
Sept. 18, 2019, 8 p.m. 6.8 ppb (6) 2.2 ppb (2) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 22.0 ppb (17) N/A N/A 1.7 μg/m3 (7) 17.0
 
Sept. 18, 2019, 7 p.m. 7.1 ppb (7) 2.1 ppb (2) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 21.0 ppb (16) N/A N/A 2.1 μg/m3 (9) 16.0
 
Sept. 18, 2019, 6 p.m. 6.0 ppb (6) 2.0 ppb (2) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 24.0 ppb (18) N/A N/A 1.7 μg/m3 (7) 18.0
 
Sept. 18, 2019, 5 p.m. 9.1 ppb (8) 2.8 ppb (3) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 19.0 ppb (15) N/A N/A 1.8 μg/m3 (8) 15.0
 
Sept. 18, 2019, 4 p.m. 13.6 ppb (13) 3.3 ppb (3) N/A 10.0 ppb (9) N/A 0.0 ppb (0) 12.0 ppb (9) N/A N/A 1.9 μg/m3 (8) 13.0
 
Sept. 18, 2019, 3 p.m. 11.3 ppb (10) 2.7 ppb (3) N/A 9.0 ppb (8) N/A 0.0 ppb (0) 14.0 ppb (11) N/A N/A 1.8 μg/m3 (8) 11.0
 
Sept. 18, 2019, 2 p.m. 10.1 ppb (9) 1.6 ppb (1) N/A 8.0 ppb (7) N/A 0.0 ppb (0) 14.0 ppb (11) N/A N/A 1.8 μg/m3 (8) 11.0
 
Sept. 18, 2019, 1 p.m. 8.1 ppb (8) 1.2 ppb (1) N/A 7.0 ppb (6) N/A 0.0 ppb (0) 16.0 ppb (12) N/A N/A 1.7 μg/m3 (7) 12.0
 
Sept. 18, 2019, noon 4.6 ppb (4) 1.0 ppb (1) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 23.0 ppb (18) N/A N/A 1.6 μg/m3 (7) 18.0
 
Sept. 18, 2019, 11 a.m. 3.2 ppb (3) 1.1 ppb (1) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 25.0 ppb (19) N/A N/A 1.5 μg/m3 (6) 19.0
 
Sept. 18, 2019, 10 a.m. 3.8 ppb (4) 1.2 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 19.0 ppb (15) N/A N/A 2.2 μg/m3 (9) 15.0
 
Sept. 18, 2019, 9 a.m. 3.2 ppb (3) 1.0 ppb (1) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 19.0 ppb (15) N/A N/A 2.0 μg/m3 (8) 15.0
 
Sept. 18, 2019, 8 a.m. 4.5 ppb (4) 1.0 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 19.0 ppb (15) N/A N/A 3.0 μg/m3 (12) 15.0
 
Sept. 18, 2019, 7 a.m. 4.3 ppb (4) 0.9 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 15.0 ppb (12) N/A N/A 3.7 μg/m3 (15) 15.0
 
Sept. 18, 2019, 6 a.m. 5.2 ppb (5) 1.0 ppb (1) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 12.0 ppb (9) N/A N/A 4.1 μg/m3 (17) 17.0
 
Sept. 18, 2019, 5 a.m. 4.4 ppb (4) 1.0 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 14.0 ppb (11) N/A N/A 2.5 μg/m3 (10) 11.0
 
Sept. 18, 2019, 4 a.m. 5.3 ppb (5) 1.1 ppb (1) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 14.0 ppb (11) N/A N/A 2.8 μg/m3 (12) 12.0
 
Sept. 18, 2019, 3 a.m. 5.0 ppb (5) 1.1 ppb (1) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 15.0 ppb (12) N/A N/A 2.7 μg/m3 (11) 12.0
 
Sept. 18, 2019, 2 a.m. 4.4 ppb (4) 1.1 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 17.0 ppb (13) N/A N/A 2.9 μg/m3 (12) 13.0
 
Sept. 18, 2019, 1 a.m. 4.4 ppb (4) 1.2 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 19.0 ppb (15) N/A N/A 2.0 μg/m3 (8) 15.0
 
Sept. 18, 2019, midnight 3.5 ppb (3) 1.3 ppb (1) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 24.0 ppb (18) N/A N/A 2.0 μg/m3 (8) 18.0
 
Sept. 17, 2019, 11 p.m. 3.5 ppb (3) 1.3 ppb (1) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 26.0 ppb (20) N/A N/A 2.1 μg/m3 (9) 20.0
 
Sept. 17, 2019, 10 p.m. 3.3 ppb (3) 1.3 ppb (1) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 27.0 ppb (21) N/A N/A 2.3 μg/m3 (10) 21.0
 
Sept. 17, 2019, 9 p.m. 3.3 ppb (3) 1.3 ppb (1) N/A 2.0 ppb (2) N/A N/A 26.0 ppb (20) N/A N/A 2.2 μg/m3 (9) 20.0
 
Sept. 17, 2019, 8 p.m. 3.3 ppb (3) 1.4 ppb (1) N/A 2.0 ppb (2) N/A N/A 24.0 ppb (18) N/A N/A 1.9 μg/m3 (8) 18.0
 
Sept. 17, 2019, 7 p.m. 6.2 ppb (6) 1.8 ppb (2) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 22.0 ppb (17) N/A N/A 8.6 μg/m3 (36) 36.0
 
Sept. 17, 2019, 6 p.m. 7.0 ppb (6) 1.8 ppb (2) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 17.0 ppb (13) N/A N/A 2.8 μg/m3 (12) 13.0
 
Sept. 17, 2019, 5 p.m. 6.1 ppb (6) 1.6 ppb (1) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 21.0 ppb (16) N/A N/A 2.2 μg/m3 (9) 16.0
 
Sept. 17, 2019, 4 p.m. 7.0 ppb (6) 1.6 ppb (1) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 20.0 ppb (15) N/A N/A 2.3 μg/m3 (10) 15.0
 
Sept. 17, 2019, 3 p.m. 8.3 ppb (8) 1.4 ppb (1) N/A 7.0 ppb (6) N/A 0.0 ppb (0) 18.0 ppb (14) N/A N/A 2.3 μg/m3 (10) 14.0
 
Sept. 17, 2019, 2 p.m. 6.5 ppb (6) 1.3 ppb (1) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 20.0 ppb (15) N/A N/A 2.3 μg/m3 (10) 15.0
 
Sept. 17, 2019, 1 p.m. 3.7 ppb (3) 1.0 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 21.0 ppb (16) N/A N/A 2.3 μg/m3 (10) 16.0
 
Sept. 17, 2019, noon 3.2 ppb (3) 1.0 ppb (1) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 22.0 ppb (17) N/A N/A 2.2 μg/m3 (9) 17.0
 
Sept. 17, 2019, 11 a.m. 4.1 ppb (4) 1.0 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 18.0 ppb (14) N/A N/A 2.4 μg/m3 (10) 14.0
 
Sept. 17, 2019, 10 a.m. 3.6 ppb (3) 1.1 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 17.0 ppb (13) N/A N/A 2.4 μg/m3 (10) 13.0
 
Sept. 17, 2019, 9 a.m. 3.5 ppb (3) 1.1 ppb (1) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 17.0 ppb (13) N/A N/A 2.5 μg/m3 (10) 13.0
 
Sept. 17, 2019, 8 a.m. 4.0 ppb (4) 1.1 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 16.0 ppb (12) N/A N/A 2.6 μg/m3 (11) 12.0
 
Sept. 17, 2019, 7 a.m. 5.4 ppb (5) 1.1 ppb (1) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 15.0 ppb (12) N/A N/A 2.8 μg/m3 (12) 12.0
 
Sept. 17, 2019, 6 a.m. 8.6 ppb (8) 1.2 ppb (1) N/A 7.0 ppb (6) N/A 0.0 ppb (0) 9.0 ppb (7) N/A N/A 3.3 μg/m3 (14) 14.0
 
Sept. 17, 2019, 5 a.m. 10.3 ppb (10) 1.3 ppb (1) N/A 9.0 ppb (8) N/A 0.0 ppb (0) 8.0 ppb (6) 7.1 ppb (76) N/A 3.5 μg/m3 (15) 76.0
 
Sept. 17, 2019, 4 a.m. 13.5 ppb (12) 1.5 ppb (1) N/A 12.0 ppb (11) N/A 0.0 ppb (0) 8.0 ppb (6) N/A N/A 4.5 μg/m3 (19) 19.0
 
Sept. 17, 2019, 3 a.m. 15.4 ppb (14) 1.6 ppb (1) N/A 14.0 ppb (13) N/A 0.0 ppb (0) 6.0 ppb (5) N/A N/A 4.8 μg/m3 (20) 20.0
 
Sept. 17, 2019, 2 a.m. 11.5 ppb (11) 1.6 ppb (1) N/A 10.0 ppb (9) N/A 0.0 ppb (0) 14.0 ppb (11) N/A N/A 3.6 μg/m3 (15) 15.0
 
Sept. 17, 2019, 1 a.m. 7.8 ppb (7) 1.2 ppb (1) N/A 7.0 ppb (6) N/A 0.0 ppb (0) 19.0 ppb (15) 0.1 ppb (1) N/A 3.3 μg/m3 (14) 15.0
 
Sept. 17, 2019, midnight 5.4 ppb (5) 1.5 ppb (1) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 24.0 ppb (18) N/A N/A 2.7 μg/m3 (11) 18.0
 
Sept. 16, 2019, 11 p.m. 5.0 ppb (5) 1.5 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 29.0 ppb (22) N/A N/A 2.2 μg/m3 (9) 22.0
 
Sept. 16, 2019, 10 p.m. 3.9 ppb (4) 1.4 ppb (1) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 31.0 ppb (24) N/A N/A 2.1 μg/m3 (9) 24.0
 
Sept. 16, 2019, 9 p.m. 3.3 ppb (3) 1.4 ppb (1) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 30.0 ppb (23) N/A N/A 2.7 μg/m3 (11) 23.0
 
Sept. 16, 2019, 8 p.m. 3.4 ppb (3) 1.4 ppb (1) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 28.0 ppb (22) N/A N/A 2.7 μg/m3 (11) 22.0
 
Sept. 16, 2019, 7 p.m. 4.1 ppb (4) 1.8 ppb (2) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 25.0 ppb (19) N/A N/A 2.9 μg/m3 (12) 19.0
 
Sept. 16, 2019, 6 p.m. 6.3 ppb (6) 2.9 ppb (3) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 20.0 ppb (15) N/A N/A 3.3 μg/m3 (14) 15.0
 
Sept. 16, 2019, 5 p.m. 7.1 ppb (7) 2.7 ppb (3) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 15.0 ppb (12) N/A N/A 4.2 μg/m3 (18) 18.0
 
Sept. 16, 2019, 4 p.m. 6.4 ppb (6) 2.1 ppb (2) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 15.0 ppb (12) N/A N/A 3.5 μg/m3 (15) 15.0
 
Sept. 16, 2019, 3 p.m. 10.2 ppb (9) 3.1 ppb (3) N/A 7.0 ppb (6) N/A 0.0 ppb (0) 11.0 ppb (8) N/A N/A 4.5 μg/m3 (19) 19.0
 
Sept. 16, 2019, 2 p.m. 18.3 ppb (17) 6.1 ppb (6) N/A 12.0 ppb (11) N/A 0.0 ppb (0) 4.0 ppb (3) N/A N/A 5.4 μg/m3 (23) 23.0
 
Sept. 16, 2019, 1 p.m. 6.8 ppb (6) 1.3 ppb (1) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 8.0 ppb (6) N/A N/A 5.0 μg/m3 (21) 21.0
 
Sept. 16, 2019, noon 4.6 ppb (4) 1.1 ppb (1) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 13.0 ppb (10) N/A N/A 4.6 μg/m3 (19) 19.0
 
Sept. 16, 2019, 11 a.m. 3.5 ppb (3) 1.1 ppb (1) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 18.0 ppb (14) N/A N/A 4.5 μg/m3 (19) 19.0
 
Sept. 16, 2019, 10 a.m. 3.3 ppb (3) 1.0 ppb (1) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 18.0 ppb (14) N/A N/A 4.5 μg/m3 (19) 19.0
 
Sept. 16, 2019, 9 a.m. 3.4 ppb (3) 1.0 ppb (1) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 20.0 ppb (15) N/A N/A 4.3 μg/m3 (18) 18.0
 
Sept. 16, 2019, 8 a.m. 4.2 ppb (4) 1.0 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 19.0 ppb (15) N/A N/A 5.3 μg/m3 (22) 22.0
 
Sept. 16, 2019, 7 a.m. 4.8 ppb (4) 1.1 ppb (1) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 17.0 ppb (13) N/A N/A 4.9 μg/m3 (20) 20.0
 
Sept. 16, 2019, 6 a.m. 4.2 ppb (4) 1.1 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 21.0 ppb (16) N/A N/A 4.3 μg/m3 (18) 18.0
 
Sept. 16, 2019, 5 a.m. 4.0 ppb (4) 1.1 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 24.0 ppb (18) N/A N/A 3.6 μg/m3 (15) 18.0
 
Sept. 16, 2019, 4 a.m. 3.8 ppb (4) 0.9 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 26.0 ppb (20) N/A N/A 3.9 μg/m3 (16) 20.0
 
Sept. 16, 2019, 3 a.m. 4.3 ppb (4) 1.0 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 28.0 ppb (22) N/A N/A 4.4 μg/m3 (18) 22.0
 
Sept. 16, 2019, 2 a.m. 4.2 ppb (4) 1.1 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 28.0 ppb (22) N/A N/A 3.7 μg/m3 (15) 22.0
 
Sept. 16, 2019, 1 a.m. 4.1 ppb (4) 1.1 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 27.0 ppb (21) N/A N/A 4.1 μg/m3 (17) 21.0
 
Sept. 16, 2019, midnight 4.4 ppb (4) 1.2 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 26.0 ppb (20) N/A N/A 3.5 μg/m3 (15) 20.0
 
Sept. 15, 2019, 11 p.m. 4.8 ppb (4) 1.2 ppb (1) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 30.0 ppb (23) N/A N/A 3.3 μg/m3 (14) 23.0
 
Sept. 15, 2019, 10 p.m. 3.8 ppb (4) 1.0 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 28.0 ppb (22) N/A N/A 3.0 μg/m3 (12) 22.0
 
Sept. 15, 2019, 9 p.m. 4.2 ppb (4) 1.2 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 26.0 ppb (20) N/A N/A 2.4 μg/m3 (10) 20.0
 
Sept. 15, 2019, 8 p.m. 5.5 ppb (5) 1.5 ppb (1) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 19.0 ppb (15) N/A N/A 2.2 μg/m3 (9) 15.0
 
Sept. 15, 2019, 7 p.m. 5.9 ppb (5) 1.5 ppb (1) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 19.0 ppb (15) N/A N/A 1.9 μg/m3 (8) 15.0
 
Sept. 15, 2019, 6 p.m. 6.3 ppb (6) 1.6 ppb (1) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 17.0 ppb (13) N/A N/A 2.1 μg/m3 (9) 13.0
 
Sept. 15, 2019, 5 p.m. 4.6 ppb (4) 1.4 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 17.0 ppb (13) N/A N/A 2.0 μg/m3 (8) 13.0
 
Sept. 15, 2019, 4 p.m. 3.7 ppb (3) 1.2 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 19.0 ppb (15) N/A N/A 1.8 μg/m3 (8) 15.0
 
Sept. 15, 2019, 3 p.m. 2.9 ppb (3) 1.1 ppb (1) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 23.0 ppb (18) N/A N/A 2.6 μg/m3 (11) 18.0
 
Sept. 15, 2019, 2 p.m. 3.0 ppb (3) 1.0 ppb (1) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 23.0 ppb (18) N/A N/A 3.3 μg/m3 (14) 18.0
 
Sept. 15, 2019, 1 p.m. 2.9 ppb (3) 1.0 ppb (1) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 21.0 ppb (16) N/A N/A 3.4 μg/m3 (14) 16.0
 
Sept. 15, 2019, noon 2.7 ppb (3) 1.1 ppb (1) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 24.0 ppb (18) N/A N/A 3.3 μg/m3 (14) 18.0
 
Sept. 15, 2019, 11 a.m. 2.9 ppb (3) 1.1 ppb (1) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 25.0 ppb (19) N/A N/A 3.6 μg/m3 (15) 19.0
 
Sept. 15, 2019, 10 a.m. 3.4 ppb (3) 1.0 ppb (1) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 23.0 ppb (18) N/A N/A 3.9 μg/m3 (16) 18.0
 
Sept. 15, 2019, 9 a.m. 3.9 ppb (4) 1.0 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 24.0 ppb (18) N/A N/A 4.5 μg/m3 (19) 19.0