AQSQID: 410510080

Site Name: Portland - Se Lafayette

Location: Portland (Foster-Powell), OR

Reporting: True, Located: True

Current AQI: 15.0

Portland (Foster-Powell) OR, US: 45.496641, -122.602877

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
Jan. 25, 2020, 9 a.m. 6.8 ppb (6) 0.6 ppb (1) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 13.0 ppb (10) N/A N/A 3.5 μg/m3 (15) 15.0
 
Jan. 25, 2020, 8 a.m. 7.2 ppb (7) 0.6 ppb (1) N/A 7.0 ppb (6) N/A 0.0 ppb (0) 12.0 ppb (9) N/A N/A 3.8 μg/m3 (16) 16.0
 
Jan. 25, 2020, 7 a.m. 10.8 ppb (10) 0.8 ppb (1) N/A 10.0 ppb (9) N/A 0.0 ppb (0) 11.0 ppb (8) N/A N/A 5.7 μg/m3 (24) 24.0
 
Jan. 25, 2020, 6 a.m. 8.6 ppb (8) 0.9 ppb (1) N/A 8.0 ppb (7) N/A 0.0 ppb (0) 16.0 ppb (12) N/A N/A 5.2 μg/m3 (22) 22.0
 
Jan. 25, 2020, 5 a.m. 36.0 ppb (33) 18.2 ppb (17) N/A 18.0 ppb (17) N/A 1.0 ppb (1) 5.0 ppb (4) N/A N/A 11.0 μg/m3 (46) 46.0
 
Jan. 25, 2020, 4 a.m. 42.1 ppb (39) 19.6 ppb (18) N/A 23.0 ppb (21) N/A 0.0 ppb (0) 1.0 ppb (1) N/A N/A 13.4 μg/m3 (53) 53.0
 
Jan. 25, 2020, 3 a.m. 41.3 ppb (38) 16.6 ppb (15) N/A 25.0 ppb (23) N/A 0.0 ppb (0) 2.0 ppb (2) N/A N/A 13.8 μg/m3 (54) 54.0
 
Jan. 25, 2020, 2 a.m. 12.6 ppb (12) 2.1 ppb (2) N/A 11.0 ppb (10) N/A 0.0 ppb (0) 19.0 ppb (15) N/A N/A 4.5 μg/m3 (19) 19.0
 
Jan. 25, 2020, 1 a.m. 4.4 ppb (4) 0.3 ppb (0) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 30.0 ppb (23) N/A N/A 3.0 μg/m3 (12) 23.0
 
Jan. 25, 2020, midnight 3.2 ppb (3) 0.3 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 33.0 ppb (25) 5.7 ppb (62) N/A 2.8 μg/m3 (12) 62.0
 
Jan. 24, 2020, 11 p.m. 3.5 ppb (3) 0.5 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 33.0 ppb (25) 0.7 ppb (8) N/A 2.8 μg/m3 (12) 25.0
 
Jan. 24, 2020, 10 p.m. 3.0 ppb (3) 0.3 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 33.0 ppb (25) N/A N/A 2.6 μg/m3 (11) 25.0
 
Jan. 24, 2020, 9 p.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) N/A N/A 2.4 μg/m3 (10) 26.0
 
Jan. 24, 2020, 8 p.m. 2.5 ppb (2) 0.3 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 34.0 ppb (26) N/A N/A 2.4 μg/m3 (10) 26.0
 
Jan. 24, 2020, 7 p.m. 2.5 ppb (2) 0.4 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 34.0 ppb (26) N/A N/A 2.1 μg/m3 (9) 26.0
 
Jan. 24, 2020, 6 p.m. 3.2 ppb (3) 0.6 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 31.0 ppb (24) N/A N/A 1.9 μg/m3 (8) 24.0
 
Jan. 24, 2020, 5 p.m. 3.8 ppb (4) 0.6 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 30.0 ppb (23) N/A N/A 1.9 μg/m3 (8) 23.0
 
Jan. 24, 2020, 4 p.m. 3.8 ppb (4) 0.3 ppb (0) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 29.0 ppb (22) 2.1 ppb (23) N/A 1.8 μg/m3 (8) 23.0
 
Jan. 24, 2020, 3 p.m. 3.7 ppb (3) 0.3 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 29.0 ppb (22) N/A N/A 1.8 μg/m3 (8) 22.0
 
Jan. 24, 2020, 2 p.m. 2.1 ppb (2) 0.1 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 30.0 ppb (23) N/A N/A 1.5 μg/m3 (6) 23.0
 
Jan. 24, 2020, 1 p.m. 1.5 ppb (1) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 30.0 ppb (23) N/A N/A 1.4 μg/m3 (6) 23.0
 
Jan. 24, 2020, noon 1.2 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 31.0 ppb (24) N/A N/A 1.3 μg/m3 (5) 24.0
 
Jan. 24, 2020, 11 a.m. 1.4 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 30.0 ppb (23) N/A N/A 1.3 μg/m3 (5) 23.0
 
Jan. 24, 2020, 10 a.m. 1.5 ppb (1) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 30.0 ppb (23) N/A N/A 1.2 μg/m3 (5) 23.0
 
Jan. 24, 2020, 9 a.m. 3.7 ppb (3) 0.1 ppb (0) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 30.0 ppb (23) N/A N/A 1.8 μg/m3 (8) 23.0
 
Jan. 24, 2020, 8 a.m. 4.5 ppb (4) 0.2 ppb (0) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 30.0 ppb (23) N/A N/A 1.9 μg/m3 (8) 23.0
 
Jan. 24, 2020, 7 a.m. 3.5 ppb (3) 0.1 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 31.0 ppb (24) N/A N/A 2.1 μg/m3 (9) 24.0
 
Jan. 24, 2020, 6 a.m. 4.2 ppb (4) 0.2 ppb (0) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 29.0 ppb (22) N/A N/A 2.6 μg/m3 (11) 22.0
 
Jan. 24, 2020, 5 a.m. 3.8 ppb (4) 0.1 ppb (0) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 29.0 ppb (22) N/A N/A 2.1 μg/m3 (9) 22.0
 
Jan. 24, 2020, 4 a.m. 6.3 ppb (6) 0.4 ppb (0) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 23.0 ppb (18) N/A N/A 2.9 μg/m3 (12) 18.0
 
Jan. 24, 2020, 3 a.m. 13.5 ppb (12) 1.5 ppb (1) N/A 12.0 ppb (11) N/A 0.0 ppb (0) 14.0 ppb (11) N/A N/A 5.1 μg/m3 (21) 21.0
 
Jan. 24, 2020, 2 a.m. 22.2 ppb (21) 4.0 ppb (4) N/A 18.0 ppb (17) N/A 0.0 ppb (0) 5.0 ppb (4) N/A N/A 7.3 μg/m3 (30) 30.0
 
Jan. 24, 2020, 1 a.m. 31.8 ppb (29) 12.3 ppb (11) N/A 20.0 ppb (19) N/A 0.0 ppb (0) 3.0 ppb (2) N/A N/A 11.3 μg/m3 (47) 47.0
 
Jan. 24, 2020, midnight 30.3 ppb (28) 10.6 ppb (10) N/A 20.0 ppb (19) N/A 0.0 ppb (0) 2.0 ppb (2) N/A N/A 10.9 μg/m3 (45) 45.0
 
Jan. 23, 2020, 11 p.m. 33.7 ppb (31) 15.1 ppb (14) N/A 19.0 ppb (18) N/A 0.0 ppb (0) 3.0 ppb (2) N/A N/A 7.1 μg/m3 (30) 31.0
 
Jan. 23, 2020, 10 p.m. 35.7 ppb (33) 18.8 ppb (17) N/A 17.0 ppb (16) N/A 0.0 ppb (0) 6.0 ppb (5) N/A N/A 6.8 μg/m3 (28) 33.0
 
Jan. 23, 2020, 9 p.m. 6.2 ppb (6) 0.5 ppb (0) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 22.0 ppb (17) N/A N/A 2.5 μg/m3 (10) 17.0
 
Jan. 23, 2020, 7 p.m. 6.6 ppb (6) 0.9 ppb (1) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 20.0 ppb (15) N/A N/A 2.1 μg/m3 (9) 15.0
 
Jan. 23, 2020, 6 p.m. 6.3 ppb (6) 0.5 ppb (0) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 22.0 ppb (17) N/A N/A 1.9 μg/m3 (8) 17.0
 
Jan. 23, 2020, 5 p.m. 8.0 ppb (7) 0.7 ppb (1) N/A 7.0 ppb (6) N/A 0.0 ppb (0) 20.0 ppb (15) N/A N/A 1.9 μg/m3 (8) 15.0
 
Jan. 23, 2020, 4 p.m. 5.6 ppb (5) 0.3 ppb (0) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 24.0 ppb (18) N/A N/A 1.5 μg/m3 (6) 18.0
 
Jan. 23, 2020, 3 p.m. 3.2 ppb (3) 0.2 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 28.0 ppb (22) N/A N/A 1.2 μg/m3 (5) 22.0
 
Jan. 23, 2020, 2 p.m. 3.1 ppb (3) 0.2 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 28.0 ppb (22) N/A N/A 1.3 μg/m3 (5) 22.0
 
Jan. 23, 2020, 1 p.m. 1.6 ppb (1) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 30.0 ppb (23) N/A N/A 1.1 μg/m3 (5) 23.0
 
Jan. 23, 2020, noon 1.5 ppb (1) 0.3 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 30.0 ppb (23) N/A N/A 1.2 μg/m3 (5) 23.0
 
Jan. 23, 2020, 11 a.m. 1.2 ppb (1) 0.2 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 30.0 ppb (23) N/A N/A 1.3 μg/m3 (5) 23.0
 
Jan. 23, 2020, 10 a.m. 0.9 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 32.0 ppb (25) N/A N/A 1.3 μg/m3 (5) 25.0
 
Jan. 23, 2020, 9 a.m. 1.1 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 32.0 ppb (25) N/A N/A 1.3 μg/m3 (5) 25.0
 
Jan. 23, 2020, 8 a.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 32.0 ppb (25) N/A N/A 1.4 μg/m3 (6) 25.0
 
Jan. 23, 2020, 7 a.m. 1.3 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 31.0 ppb (24) N/A N/A 1.6 μg/m3 (7) 24.0
 
Jan. 23, 2020, 6 a.m. 2.1 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 30.0 ppb (23) N/A N/A 1.7 μg/m3 (7) 23.0
 
Jan. 23, 2020, 5 a.m. 3.4 ppb (3) 0.2 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 28.0 ppb (22) N/A N/A 2.0 μg/m3 (8) 22.0
 
Jan. 23, 2020, 4 a.m. 3.2 ppb (3) 0.2 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 28.0 ppb (22) N/A N/A 2.1 μg/m3 (9) 22.0
 
Jan. 23, 2020, 3 a.m. 3.0 ppb (3) 0.3 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 29.0 ppb (22) 1.6 ppb (18) N/A 1.9 μg/m3 (8) 22.0
 
Jan. 23, 2020, 1 a.m. 3.5 ppb (3) 0.1 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 30.0 ppb (23) 9.8 ppb (105) N/A 1.9 μg/m3 (8) 105.0
 
Jan. 23, 2020, midnight 3.2 ppb (3) 0.2 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 31.0 ppb (24) N/A N/A 1.6 μg/m3 (7) 24.0
 
Jan. 22, 2020, 11 p.m. 3.6 ppb (3) 0.3 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 30.0 ppb (23) 8.5 ppb (90) N/A 1.8 μg/m3 (8) 90.0
 
Jan. 22, 2020, 10 p.m. 3.1 ppb (3) 0.2 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 31.0 ppb (24) 5.1 ppb (56) N/A 1.7 μg/m3 (7) 56.0
 
Jan. 22, 2020, 9 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 32.0 ppb (25) 11.2 ppb (128) N/A 1.7 μg/m3 (7) 128.0
 
Jan. 22, 2020, 8 p.m. 9.7 ppb (9) 1.4 ppb (1) N/A 8.0 ppb (7) N/A 0.0 ppb (0) 24.0 ppb (18) N/A N/A 2.5 μg/m3 (10) 18.0
 
Jan. 22, 2020, 7 p.m. 7.5 ppb (7) 1.0 ppb (1) N/A 7.0 ppb (6) N/A 0.0 ppb (0) 28.0 ppb (22) N/A N/A 2.4 μg/m3 (10) 22.0
 
Jan. 22, 2020, 6 p.m. 9.0 ppb (8) 1.2 ppb (1) N/A 8.0 ppb (7) N/A 0.0 ppb (0) 26.0 ppb (20) N/A N/A 2.1 μg/m3 (9) 20.0
 
Jan. 22, 2020, 4 p.m. 13.6 ppb (13) 1.7 ppb (2) N/A 12.0 ppb (11) N/A 0.0 ppb (0) 20.0 ppb (15) N/A N/A 2.1 μg/m3 (9) 15.0
 
Jan. 22, 2020, 3 p.m. 10.1 ppb (9) 1.0 ppb (1) N/A 9.0 ppb (8) N/A 0.0 ppb (0) 23.0 ppb (18) N/A N/A 2.1 μg/m3 (9) 18.0
 
Jan. 22, 2020, 2 p.m. 3.2 ppb (3) 0.1 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 32.0 ppb (25) 6.5 ppb (70) N/A 1.9 μg/m3 (8) 70.0
 
Jan. 22, 2020, 1 p.m. 2.6 ppb (2) 0.1 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 32.0 ppb (25) N/A N/A 1.9 μg/m3 (8) 25.0
 
Jan. 22, 2020, noon 2.6 ppb (2) 0.1 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 32.0 ppb (25) 5.6 ppb (61) N/A 1.9 μg/m3 (8) 61.0
 
Jan. 22, 2020, 11 a.m. 2.2 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 32.0 ppb (25) N/A N/A 1.9 μg/m3 (8) 25.0
 
Jan. 22, 2020, 10 a.m. 2.1 ppb (2) 0.1 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 33.0 ppb (25) 0.1 ppb (1) N/A 1.9 μg/m3 (8) 25.0
 
Jan. 22, 2020, 9 a.m. 2.7 ppb (3) 0.2 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 32.0 ppb (25) 9.9 ppb (107) N/A 2.2 μg/m3 (9) 107.0
 
Jan. 22, 2020, 8 a.m. 2.7 ppb (3) 0.2 ppb (0) N/A 3.0 ppb (3) N/A N/A 31.0 ppb (24) N/A N/A 2.9 μg/m3 (12) 24.0
 
Jan. 22, 2020, 7 a.m. 1.3 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 34.0 ppb (26) 1.9 ppb (21) N/A 2.1 μg/m3 (9) 26.0
 
Jan. 22, 2020, 6 a.m. 2.1 ppb (2) 0.1 ppb (0) N/A 2.0 ppb (2) N/A N/A 34.0 ppb (26) N/A N/A 2.3 μg/m3 (10) 26.0
 
Jan. 22, 2020, 5 a.m. 3.1 ppb (3) 0.3 ppb (0) N/A 3.0 ppb (3) N/A N/A 33.0 ppb (25) N/A N/A 2.6 μg/m3 (11) 25.0
 
Jan. 22, 2020, 4 a.m. 3.3 ppb (3) 0.2 ppb (0) N/A 3.0 ppb (3) N/A N/A 33.0 ppb (25) N/A N/A 2.4 μg/m3 (10) 25.0
 
Jan. 22, 2020, 3 a.m. 4.2 ppb (4) 0.2 ppb (0) N/A 4.0 ppb (4) N/A N/A 32.0 ppb (25) N/A N/A 2.4 μg/m3 (10) 25.0
 
Jan. 22, 2020, 2 a.m. 4.6 ppb (4) 0.2 ppb (0) N/A 4.0 ppb (4) N/A N/A 31.0 ppb (24) N/A N/A 2.9 μg/m3 (12) 24.0
 
Jan. 22, 2020, 1 a.m. 3.8 ppb (4) 0.2 ppb (0) N/A 4.0 ppb (4) N/A N/A 35.0 ppb (27) N/A N/A 2.2 μg/m3 (9) 27.0
 
Jan. 22, 2020, midnight 3.2 ppb (3) 0.3 ppb (0) N/A 3.0 ppb (3) N/A N/A 34.0 ppb (26) N/A N/A 2.0 μg/m3 (8) 26.0
 
Jan. 21, 2020, 11 p.m. 3.1 ppb (3) 0.4 ppb (0) N/A 3.0 ppb (3) N/A N/A 35.0 ppb (27) N/A N/A 2.0 μg/m3 (8) 27.0
 
Jan. 21, 2020, 10 p.m. 2.7 ppb (3) 0.3 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 36.0 ppb (28) 11.9 ppb (140) N/A 2.1 μg/m3 (9) 140.0
 
Jan. 21, 2020, 9 p.m. 2.8 ppb (3) 0.3 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 37.0 ppb (28) N/A N/A 2.0 μg/m3 (8) 28.0
 
Jan. 21, 2020, 8 p.m. 1.9 ppb (2) 0.3 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 39.0 ppb (30) 13.4 ppb (165) N/A 1.9 μg/m3 (8) 165.0
 
Jan. 21, 2020, 7 p.m. 1.8 ppb (2) 0.5 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 41.0 ppb (32) N/A N/A 1.9 μg/m3 (8) 32.0
 
Jan. 21, 2020, 6 p.m. 2.4 ppb (2) 0.5 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 40.0 ppb (31) N/A N/A 2.4 μg/m3 (10) 31.0
 
Jan. 21, 2020, 5 p.m. 5.5 ppb (5) 0.8 ppb (1) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 36.0 ppb (28) N/A N/A 1.7 μg/m3 (7) 28.0
 
Jan. 21, 2020, 4 p.m. N/A N/A N/A 6.0 ppb (6) N/A 0.0 ppb (0) 36.0 ppb (28) N/A N/A 1.7 μg/m3 (7) 28.0
 
Jan. 21, 2020, 3 p.m. N/A N/A N/A 6.0 ppb (6) N/A 0.0 ppb (0) 36.0 ppb (28) N/A N/A 1.7 μg/m3 (7) 28.0
 
Jan. 21, 2020, 2 p.m. N/A N/A N/A 7.0 ppb (6) N/A 0.0 ppb (0) 32.0 ppb (25) N/A N/A 2.3 μg/m3 (10) 25.0
 
Jan. 21, 2020, 1 p.m. N/A N/A N/A 6.0 ppb (6) N/A 0.0 ppb (0) 23.0 ppb (18) N/A N/A 7.0 μg/m3 (29) 29.0
 
Jan. 21, 2020, noon N/A N/A N/A 15.0 ppb (14) N/A 0.0 ppb (0) 4.0 ppb (3) N/A N/A 12.5 μg/m3 (51) 51.0
 
Jan. 21, 2020, 11 a.m. N/A N/A N/A 19.0 ppb (18) N/A 0.0 ppb (0) 1.0 ppb (1) N/A N/A 14.2 μg/m3 (55) 55.0
 
Jan. 21, 2020, 10 a.m. N/A N/A N/A 20.0 ppb (19) N/A 0.0 ppb (0) 2.0 ppb (2) N/A N/A 14.0 μg/m3 (54) 54.0
 
Jan. 21, 2020, 9 a.m. N/A N/A N/A 13.0 ppb (12) N/A 0.0 ppb (0) 11.0 ppb (8) N/A N/A 8.2 μg/m3 (34) 34.0
 
Jan. 21, 2020, 8 a.m. N/A N/A N/A 15.0 ppb (14) N/A 1.0 ppb (1) 12.0 ppb (9) N/A N/A 11.1 μg/m3 (46) 46.0
 
Jan. 21, 2020, 7 a.m. N/A N/A N/A 15.0 ppb (14) N/A 0.0 ppb (0) 9.0 ppb (7) N/A N/A 12.8 μg/m3 (52) 52.0
 
Jan. 21, 2020, 6 a.m. N/A N/A N/A 7.0 ppb (6) N/A 1.0 ppb (1) 21.0 ppb (16) N/A N/A 6.5 μg/m3 (27) 27.0
 
Jan. 21, 2020, 5 a.m. N/A N/A N/A 5.0 ppb (5) N/A 1.0 ppb (1) 23.0 ppb (18) N/A N/A 7.8 μg/m3 (32) 32.0
 
Jan. 21, 2020, 4 a.m. N/A N/A N/A 5.0 ppb (5) N/A 0.0 ppb (0) 23.0 ppb (18) N/A N/A 9.1 μg/m3 (38) 38.0
 
Jan. 21, 2020, 3 a.m. N/A N/A N/A 7.0 ppb (6) N/A 1.0 ppb (1) 21.0 ppb (16) N/A N/A 8.9 μg/m3 (37) 37.0
 
Jan. 21, 2020, 2 a.m. N/A N/A N/A 9.0 ppb (8) N/A 1.0 ppb (1) 21.0 ppb (16) N/A N/A 7.3 μg/m3 (30) 30.0
 
Jan. 21, 2020, 1 a.m. N/A N/A N/A 10.0 ppb (9) N/A 1.0 ppb (1) 19.0 ppb (15) N/A N/A 7.8 μg/m3 (32) 32.0
 
Jan. 21, 2020, midnight N/A N/A N/A 10.0 ppb (9) N/A 0.0 ppb (0) 20.0 ppb (15) N/A N/A 7.3 μg/m3 (30) 30.0
 
Jan. 20, 2020, 11 p.m. N/A N/A N/A 9.0 ppb (8) N/A 0.0 ppb (0) 20.0 ppb (15) N/A N/A 8.0 μg/m3 (33) 33.0
 
Jan. 20, 2020, 10 p.m. N/A N/A N/A 7.0 ppb (6) N/A 0.0 ppb (0) 22.0 ppb (17) N/A N/A 8.8 μg/m3 (37) 37.0
 
Jan. 20, 2020, 9 p.m. N/A N/A N/A 6.0 ppb (6) N/A 0.0 ppb (0) 23.0 ppb (18) N/A N/A 9.5 μg/m3 (40) 40.0
 
Jan. 20, 2020, 8 p.m. N/A N/A N/A 5.0 ppb (5) N/A 0.0 ppb (0) 23.0 ppb (18) N/A N/A 10.5 μg/m3 (44) 44.0
 
Jan. 20, 2020, 7 p.m. N/A N/A N/A 5.0 ppb (5) N/A 0.0 ppb (0) 24.0 ppb (18) N/A N/A 11.2 μg/m3 (47) 47.0
 
Jan. 20, 2020, 6 p.m. N/A N/A N/A 6.0 ppb (6) N/A 0.0 ppb (0) 21.0 ppb (16) N/A N/A 12.1 μg/m3 (50) 50.0
 
Jan. 20, 2020, 5 p.m. N/A N/A N/A 7.0 ppb (6) N/A 0.0 ppb (0) 20.0 ppb (15) N/A N/A 12.7 μg/m3 (51) 51.0
 
Jan. 20, 2020, 4 p.m. N/A N/A N/A 9.0 ppb (8) N/A 0.0 ppb (0) 19.0 ppb (15) N/A N/A 11.2 μg/m3 (47) 47.0
 
Jan. 20, 2020, 3 p.m. N/A N/A N/A 9.0 ppb (8) N/A 0.0 ppb (0) 20.0 ppb (15) N/A N/A 10.5 μg/m3 (44) 44.0
 
Jan. 20, 2020, 2 p.m. N/A N/A N/A 7.0 ppb (6) N/A 0.0 ppb (0) 22.0 ppb (17) N/A N/A 9.5 μg/m3 (40) 40.0
 
Jan. 20, 2020, 1 p.m. N/A N/A N/A 5.0 ppb (5) N/A 0.0 ppb (0) 23.0 ppb (18) N/A N/A 8.1 μg/m3 (34) 34.0
 
Jan. 20, 2020, noon N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 25.0 ppb (19) N/A N/A 7.7 μg/m3 (32) 32.0
 
Jan. 20, 2020, 11 a.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 26.0 ppb (20) N/A N/A 7.5 μg/m3 (31) 31.0
 
Jan. 20, 2020, 10 a.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 28.0 ppb (22) N/A N/A 7.9 μg/m3 (33) 33.0
 
Jan. 20, 2020, 8 a.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 28.0 ppb (22) N/A N/A 8.8 μg/m3 (37) 37.0
 
Jan. 20, 2020, 6 a.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 28.0 ppb (22) N/A N/A 10.1 μg/m3 (42) 42.0
 
Jan. 20, 2020, 5 a.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 27.0 ppb (21) N/A N/A 11.6 μg/m3 (48) 48.0
 
Jan. 20, 2020, 4 a.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 27.0 ppb (21) N/A N/A 10.6 μg/m3 (44) 44.0
 
Jan. 20, 2020, 3 a.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 27.0 ppb (21) N/A N/A 9.2 μg/m3 (38) 38.0
 
Jan. 20, 2020, 2 a.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 28.0 ppb (22) N/A N/A 8.5 μg/m3 (35) 35.0
 
Jan. 20, 2020, 1 a.m. N/A N/A N/A 4.0 ppb (4) N/A 0.0 ppb (0) 27.0 ppb (21) N/A N/A 8.3 μg/m3 (35) 35.0
 
Jan. 20, 2020, midnight N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 26.0 ppb (20) N/A N/A 8.4 μg/m3 (35) 35.0
 
Jan. 19, 2020, 11 p.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 27.0 ppb (21) N/A N/A 8.1 μg/m3 (34) 34.0
 
Jan. 19, 2020, 10 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 27.0 ppb (21) N/A N/A 7.3 μg/m3 (30) 30.0
 
Jan. 19, 2020, 9 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 27.0 ppb (21) N/A N/A 7.1 μg/m3 (30) 30.0
 
Jan. 19, 2020, 8 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 26.0 ppb (20) N/A N/A 8.0 μg/m3 (33) 33.0
 
Jan. 19, 2020, 7 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 25.0 ppb (19) N/A N/A 8.8 μg/m3 (37) 37.0
 
Jan. 19, 2020, 6 p.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 24.0 ppb (18) N/A N/A 8.7 μg/m3 (36) 36.0
 
Jan. 19, 2020, 5 p.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 24.0 ppb (18) N/A N/A 9.1 μg/m3 (38) 38.0
 
Jan. 19, 2020, 4 p.m. N/A N/A N/A 4.0 ppb (4) N/A 0.0 ppb (0) 24.0 ppb (18) N/A N/A 9.0 μg/m3 (38) 38.0
 
Jan. 19, 2020, 3 p.m. N/A N/A N/A 4.0 ppb (4) N/A 0.0 ppb (0) 23.0 ppb (18) N/A N/A 7.7 μg/m3 (32) 32.0
 
Jan. 19, 2020, 2 p.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 24.0 ppb (18) N/A N/A 6.4 μg/m3 (27) 27.0
 
Jan. 19, 2020, 1 p.m. N/A N/A N/A 4.0 ppb (4) N/A 0.0 ppb (0) 23.0 ppb (18) N/A N/A 5.0 μg/m3 (21) 21.0
 
Jan. 19, 2020, noon N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 25.0 ppb (19) N/A N/A 4.1 μg/m3 (17) 19.0
 
Jan. 19, 2020, 11 a.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 26.0 ppb (20) N/A N/A 3.1 μg/m3 (13) 20.0
 
Jan. 19, 2020, 10 a.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 24.0 ppb (18) N/A N/A 3.2 μg/m3 (13) 18.0
 
Jan. 19, 2020, 9 a.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 24.0 ppb (18) N/A N/A 3.2 μg/m3 (13) 18.0
 
Jan. 19, 2020, 8 a.m. N/A N/A N/A 4.0 ppb (4) N/A 0.0 ppb (0) 23.0 ppb (18) N/A N/A 3.2 μg/m3 (13) 18.0
 
Jan. 19, 2020, 7 a.m. N/A N/A N/A 4.0 ppb (4) N/A 0.0 ppb (0) 21.0 ppb (16) N/A N/A 3.7 μg/m3 (15) 16.0
 
Jan. 19, 2020, 6 a.m. N/A N/A N/A 5.0 ppb (5) N/A 0.0 ppb (0) 20.0 ppb (15) N/A N/A 3.7 μg/m3 (15) 15.0
 
Jan. 19, 2020, 5 a.m. N/A N/A N/A 8.0 ppb (7) N/A 0.0 ppb (0) 18.0 ppb (14) N/A N/A 4.8 μg/m3 (20) 20.0
 
Jan. 19, 2020, 4 a.m. N/A N/A N/A 8.0 ppb (7) N/A 0.0 ppb (0) 18.0 ppb (14) N/A N/A 4.8 μg/m3 (20) 20.0
 
Jan. 19, 2020, 3 a.m. N/A N/A N/A 8.0 ppb (7) N/A 0.0 ppb (0) 17.0 ppb (13) N/A N/A 5.3 μg/m3 (22) 22.0
 
Jan. 19, 2020, 2 a.m. N/A N/A N/A 9.0 ppb (8) N/A 0.0 ppb (0) 14.0 ppb (11) N/A N/A 5.3 μg/m3 (22) 22.0
 
Jan. 19, 2020, 1 a.m. N/A N/A N/A 13.0 ppb (12) N/A 0.0 ppb (0) 9.0 ppb (7) N/A N/A 5.7 μg/m3 (24) 24.0
 
Jan. 19, 2020, midnight N/A N/A N/A 13.0 ppb (12) N/A 0.0 ppb (0) 12.0 ppb (9) N/A N/A 5.9 μg/m3 (25) 25.0
 
Jan. 18, 2020, 10 p.m. N/A N/A N/A 11.0 ppb (10) N/A 0.0 ppb (0) 14.0 ppb (11) N/A N/A 5.6 μg/m3 (23) 23.0
 
Jan. 18, 2020, 9 p.m. N/A N/A N/A 11.0 ppb (10) N/A 0.0 ppb (0) 16.0 ppb (12) N/A N/A 5.3 μg/m3 (22) 22.0
 
Jan. 18, 2020, 8 p.m. N/A N/A N/A 12.0 ppb (11) N/A 0.0 ppb (0) 16.0 ppb (12) N/A N/A 5.4 μg/m3 (23) 23.0
 
Jan. 18, 2020, 7 p.m. N/A N/A N/A 11.0 ppb (10) N/A 0.0 ppb (0) 17.0 ppb (13) N/A N/A 4.7 μg/m3 (20) 20.0
 
Jan. 18, 2020, 6 p.m. N/A N/A N/A 10.0 ppb (9) N/A 0.0 ppb (0) 18.0 ppb (14) N/A N/A 3.3 μg/m3 (14) 14.0
 
Jan. 18, 2020, 5 p.m. N/A N/A N/A 10.0 ppb (9) N/A 0.0 ppb (0) 20.0 ppb (15) N/A N/A 2.7 μg/m3 (11) 15.0
 
Jan. 18, 2020, 4 p.m. N/A N/A N/A 7.0 ppb (6) N/A 0.0 ppb (0) 23.0 ppb (18) N/A N/A 2.2 μg/m3 (9) 18.0
 
Jan. 18, 2020, 3 p.m. N/A N/A N/A 6.0 ppb (6) N/A 0.0 ppb (0) 25.0 ppb (19) N/A N/A 2.0 μg/m3 (8) 19.0
 
Jan. 18, 2020, 2 p.m. N/A N/A N/A 5.0 ppb (5) N/A 0.0 ppb (0) 27.0 ppb (21) N/A N/A 2.0 μg/m3 (8) 21.0
 
Jan. 18, 2020, 1 p.m. N/A N/A N/A 4.0 ppb (4) N/A 0.0 ppb (0) 28.0 ppb (22) N/A N/A 2.0 μg/m3 (8) 22.0
 
Jan. 18, 2020, noon N/A N/A N/A 5.0 ppb (5) N/A 0.0 ppb (0) 28.0 ppb (22) N/A N/A 1.9 μg/m3 (8) 22.0
 
Jan. 18, 2020, 11 a.m. N/A N/A N/A 5.0 ppb (5) N/A 0.0 ppb (0) 25.0 ppb (19) N/A N/A 2.0 μg/m3 (8) 19.0
 
Jan. 18, 2020, 10 a.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 28.0 ppb (22) N/A N/A 1.8 μg/m3 (8) 22.0
 
Jan. 18, 2020, 9 a.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 27.0 ppb (21) N/A N/A 2.1 μg/m3 (9) 21.0
 
Jan. 18, 2020, 8 a.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 26.0 ppb (20) N/A N/A 2.6 μg/m3 (11) 20.0
 
Jan. 18, 2020, 7 a.m. N/A N/A N/A 6.0 ppb (6) N/A 0.0 ppb (0) 23.0 ppb (18) N/A N/A 3.9 μg/m3 (16) 18.0
 
Jan. 18, 2020, 6 a.m. N/A N/A N/A 8.0 ppb (7) N/A 0.0 ppb (0) 20.0 ppb (15) N/A N/A 4.2 μg/m3 (18) 18.0
 
Jan. 18, 2020, 5 a.m. N/A N/A N/A 8.0 ppb (7) N/A 0.0 ppb (0) 19.0 ppb (15) N/A N/A 4.8 μg/m3 (20) 20.0
 
Jan. 18, 2020, 4 a.m. N/A N/A N/A 8.0 ppb (7) N/A 0.0 ppb (0) 22.0 ppb (17) N/A N/A 3.9 μg/m3 (16) 17.0