AQSQID: 160010010

Site Name: St. Lukes Meridian

Location: Meridian (Whiteriver Dr), ID

Reporting: True, Located: True

Current AQI: 33.0

Meridian (Whiteriver Dr) ID, US: 43.600699, -116.347853

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
Jan. 21, 2020, 6 p.m. 34.6 ppb (32) 11.4 ppb (11) 33.9 ppb (31) 23.0 ppb (21) 20.0 ppb (19) N/A 11.0 ppb (8) 0.29 ppb (3) N/A 8.0 μg/m3 (33) 33.0
 
Jan. 21, 2020, 5 p.m. 30.5 ppb (28) 9.9 ppb (9) 30.2 ppb (28) 21.0 ppb (19) 18.1 ppb (17) N/A 11.0 ppb (8) 0.26 ppb (3) N/A 9.0 μg/m3 (38) 38.0
 
Jan. 21, 2020, 4 p.m. 43.9 ppb (41) 16.2 ppb (15) 42.3 ppb (39) 28.0 ppb (26) 23.8 ppb (22) 1.0 ppb (1) N/A 0.36 ppb (4) N/A 11.0 μg/m3 (46) 46.0
 
Jan. 21, 2020, 3 p.m. 40.3 ppb (37) 13.1 ppb (12) 34.4 ppb (32) 27.0 ppb (25) 21.1 ppb (20) 0.0 ppb (0) N/A 0.25 ppb (3) N/A 6.0 μg/m3 (25) 37.0
 
Jan. 21, 2020, 2 p.m. 17.0 ppb (16) 2.1 ppb (2) 16.4 ppb (15) 15.0 ppb (14) 12.7 ppb (12) 0.0 ppb (0) 18.0 ppb (14) 0.21 ppb (2) N/A 4.0 μg/m3 (17) 17.0
 
Jan. 21, 2020, 1 p.m. 13.4 ppb (12) 2.4 ppb (2) 10.4 ppb (10) 11.0 ppb (10) 7.8 ppb (7) 0.0 ppb (0) 23.0 ppb (18) 0.15 ppb (2) N/A 6.0 μg/m3 (25) 25.0
 
Jan. 21, 2020, noon 25.8 ppb (24) 3.4 ppb (3) 23.5 ppb (22) 22.0 ppb (20) 18.4 ppb (17) 0.0 ppb (0) 7.0 ppb (5) 0.24 ppb (3) N/A 8.0 μg/m3 (33) 33.0
 
Jan. 21, 2020, 11 a.m. 27.1 ppb (25) 6.6 ppb (6) 23.3 ppb (22) 21.0 ppb (19) 17.2 ppb (16) 0.0 ppb (0) 9.0 ppb (7) 0.2 ppb (2) N/A 5.0 μg/m3 (21) 25.0
 
Jan. 21, 2020, 10 a.m. 24.6 ppb (23) 1.7 ppb (2) 22.9 ppb (21) 23.0 ppb (21) 19.3 ppb (18) 0.0 ppb (0) 6.0 ppb (5) 0.24 ppb (3) N/A 7.0 μg/m3 (29) 29.0
 
Jan. 21, 2020, 9 a.m. 31.7 ppb (29) 5.4 ppb (5) 30.7 ppb (28) 26.0 ppb (24) 23.7 ppb (22) 0.0 ppb (0) 4.0 ppb (3) 0.29 ppb (3) N/A 11.0 μg/m3 (46) 46.0
 
Jan. 21, 2020, 8 a.m. 27.2 ppb (25) 2.5 ppb (2) 26.9 ppb (25) 25.0 ppb (23) 21.8 ppb (20) 0.0 ppb (0) 5.0 ppb (4) 0.27 ppb (3) N/A 10.0 μg/m3 (42) 42.0
 
Jan. 21, 2020, 7 a.m. 24.7 ppb (23) 2.2 ppb (2) 24.6 ppb (23) 23.0 ppb (21) 20.0 ppb (19) 0.0 ppb (0) 5.0 ppb (4) 0.26 ppb (3) N/A 10.0 μg/m3 (42) 42.0
 
Jan. 21, 2020, 6 a.m. 23.3 ppb (22) 1.2 ppb (1) 23.2 ppb (21) 22.0 ppb (20) 19.2 ppb (18) 0.0 ppb (0) 9.0 ppb (7) 0.25 ppb (3) N/A 11.0 μg/m3 (46) 46.0
 
Jan. 21, 2020, 5 a.m. 29.6 ppb (27) 5.0 ppb (5) 27.4 ppb (25) 25.0 ppb (23) 20.4 ppb (19) 0.0 ppb (0) 8.0 ppb (6) 0.26 ppb (3) N/A 6.0 μg/m3 (25) 27.0
 
Jan. 21, 2020, 4 a.m. 61.2 ppb (58) 25.6 ppb (24) 58.5 ppb (55) 36.0 ppb (33) 30.9 ppb (29) 1.0 ppb (1) 1.0 ppb (1) 0.53 ppb (6) N/A 17.0 μg/m3 (61) 61.0
 
Jan. 21, 2020, 3 a.m. 63.7 ppb (60) 27.9 ppb (26) 61.2 ppb (58) 36.0 ppb (33) 32.4 ppb (30) 1.0 ppb (1) 1.0 ppb (1) 0.57 ppb (6) N/A 20.0 μg/m3 (67) 67.0
 
Jan. 21, 2020, 2 a.m. 48.7 ppb (45) 15.8 ppb (15) 48.2 ppb (45) 33.0 ppb (31) 29.5 ppb (27) 1.0 ppb (1) 3.0 ppb (2) 0.53 ppb (6) N/A 15.0 μg/m3 (56) 56.0
 
Jan. 21, 2020, 1 a.m. 23.0 ppb (21) 1.0 ppb (1) 22.0 ppb (20) 22.0 ppb (20) 19.0 ppb (18) 0.0 ppb (0) 11.0 ppb (8) 0.29 ppb (3) N/A 6.0 μg/m3 (25) 25.0
 
Jan. 21, 2020, midnight 18.6 ppb (17) 1.2 ppb (1) 16.5 ppb (15) 17.0 ppb (16) 14.1 ppb (13) 0.0 ppb (0) 15.0 ppb (12) 0.27 ppb (3) N/A 8.0 μg/m3 (33) 33.0
 
Jan. 20, 2020, 11 p.m. 15.8 ppb (15) 1.8 ppb (2) 14.3 ppb (13) 14.0 ppb (13) 11.7 ppb (11) 0.0 ppb (0) 18.0 ppb (14) 0.21 ppb (2) N/A 5.0 μg/m3 (21) 21.0
 
Jan. 20, 2020, 10 p.m. 13.8 ppb (13) 1.9 ppb (2) 13.2 ppb (12) 12.0 ppb (11) 10.2 ppb (9) 0.0 ppb (0) 22.0 ppb (17) 0.18 ppb (2) N/A 5.0 μg/m3 (21) 21.0
 
Jan. 20, 2020, 9 p.m. 7.1 ppb (7) 1.5 ppb (1) 6.7 ppb (6) 6.0 ppb (6) 4.7 ppb (4) 0.0 ppb (0) 27.0 ppb (21) 0.13 ppb (1) N/A 5.0 μg/m3 (21) 21.0
 
Jan. 20, 2020, 8 p.m. 9.4 ppb (9) 2.3 ppb (2) 9.0 ppb (8) 7.0 ppb (6) 6.3 ppb (6) 0.0 ppb (0) 27.0 ppb (21) 0.13 ppb (1) N/A 6.0 μg/m3 (25) 25.0
 
Jan. 20, 2020, 7 p.m. 17.7 ppb (16) 4.2 ppb (4) 17.6 ppb (16) 14.0 ppb (13) 12.0 ppb (11) 0.0 ppb (0) 21.0 ppb (16) 0.19 ppb (2) N/A 6.0 μg/m3 (25) 25.0
 
Jan. 20, 2020, 6 p.m. 21.0 ppb (19) 5.2 ppb (5) 19.5 ppb (18) 16.0 ppb (15) 12.9 ppb (12) 0.0 ppb (0) 19.0 ppb (15) 0.2 ppb (2) N/A 8.0 μg/m3 (33) 33.0
 
Jan. 20, 2020, 5 p.m. 29.6 ppb (27) 7.8 ppb (7) 28.9 ppb (27) 22.0 ppb (20) 18.9 ppb (18) 0.0 ppb (0) 13.0 ppb (10) 0.25 ppb (3) N/A 8.0 μg/m3 (33) 33.0
 
Jan. 20, 2020, 4 p.m. 49.4 ppb (46) 19.0 ppb (18) 48.9 ppb (45) 30.0 ppb (28) 26.7 ppb (25) 1.0 ppb (1) 4.0 ppb (3) 0.36 ppb (4) N/A 10.0 μg/m3 (42) 46.0
 
Jan. 20, 2020, 3 p.m. 51.7 ppb (48) 18.7 ppb (17) 48.5 ppb (45) 33.0 ppb (31) 28.7 ppb (27) 1.0 ppb (1) 3.0 ppb (2) 0.37 ppb (4) N/A 8.0 μg/m3 (33) 48.0
 
Jan. 20, 2020, 2 p.m. 43.6 ppb (40) 10.0 ppb (9) 44.9 ppb (42) 34.0 ppb (31) 29.8 ppb (28) 0.0 ppb (0) 1.0 ppb (1) 0.33 ppb (4) N/A 6.0 μg/m3 (25) 42.0
 
Jan. 20, 2020, 1 p.m. 44.2 ppb (41) 12.6 ppb (12) 46.4 ppb (43) 32.0 ppb (30) 28.6 ppb (26) 0.0 ppb (0) 2.0 ppb (2) 0.3 ppb (3) N/A 8.0 μg/m3 (33) 43.0
 
Jan. 20, 2020, noon 23.2 ppb (21) 1.2 ppb (1) 22.5 ppb (21) 22.0 ppb (20) 19.1 ppb (18) 0.0 ppb (0) 9.0 ppb (7) 0.19 ppb (2) N/A 5.0 μg/m3 (21) 21.0
 
Jan. 20, 2020, 11 a.m. 11.3 ppb (10) 0.6 ppb (1) 9.1 ppb (8) 11.0 ppb (10) 8.0 ppb (7) 0.0 ppb (0) 20.0 ppb (15) 0.14 ppb (2) N/A 7.0 μg/m3 (29) 29.0
 
Jan. 20, 2020, 10 a.m. 11.6 ppb (11) 0.3 ppb (0) 10.9 ppb (10) 11.0 ppb (10) 9.5 ppb (9) 0.0 ppb (0) 19.0 ppb (15) 0.15 ppb (2) N/A 12.0 μg/m3 (50) 50.0
 
Jan. 20, 2020, 9 a.m. 14.5 ppb (13) 0.6 ppb (1) 14.3 ppb (13) 14.0 ppb (13) 12.2 ppb (11) 0.0 ppb (0) 15.0 ppb (12) 0.19 ppb (2) N/A 8.0 μg/m3 (33) 33.0
 
Jan. 20, 2020, 8 a.m. 3.4 ppb (3) 0.3 ppb (0) 3.4 ppb (3) 3.0 ppb (3) 2.9 ppb (3) 0.0 ppb (0) 26.0 ppb (20) 0.11 ppb (1) N/A 6.0 μg/m3 (25) 25.0
 
Jan. 20, 2020, 7 a.m. 3.1 ppb (3) 0.6 ppb (1) 2.9 ppb (3) 3.0 ppb (3) 2.4 ppb (2) 0.0 ppb (0) 27.0 ppb (21) 0.11 ppb (1) N/A 8.0 μg/m3 (33) 33.0
 
Jan. 20, 2020, 6 a.m. 3.0 ppb (3) 0.5 ppb (0) 2.8 ppb (3) 2.0 ppb (2) 2.2 ppb (2) 0.0 ppb (0) 28.0 ppb (22) 0.11 ppb (1) N/A 8.0 μg/m3 (33) 33.0
 
Jan. 20, 2020, 5 a.m. 2.8 ppb (3) 0.1 ppb (0) 3.2 ppb (3) 3.0 ppb (3) 2.6 ppb (2) 0.0 ppb (0) 28.0 ppb (22) 0.12 ppb (1) N/A 6.0 μg/m3 (25) 25.0
 
Jan. 20, 2020, 4 a.m. 3.6 ppb (3) 1.0 ppb (1) 3.2 ppb (3) 3.0 ppb (3) 2.4 ppb (2) 0.0 ppb (0) 29.0 ppb (22) 0.11 ppb (1) N/A 3.0 μg/m3 (12) 22.0
 
Jan. 20, 2020, 3 a.m. 4.2 ppb (4) 1.0 ppb (1) 3.7 ppb (3) 3.0 ppb (3) 2.8 ppb (3) 0.0 ppb (0) 29.0 ppb (22) 0.12 ppb (1) N/A 2.0 μg/m3 (8) 22.0
 
Jan. 20, 2020, 2 a.m. 5.2 ppb (5) 1.2 ppb (1) 4.6 ppb (4) 4.0 ppb (4) 3.4 ppb (3) 0.0 ppb (0) 29.0 ppb (22) 0.13 ppb (1) N/A 3.0 μg/m3 (12) 22.0
 
Jan. 20, 2020, 1 a.m. 5.6 ppb (5) 0.8 ppb (1) 5.3 ppb (5) 5.0 ppb (5) 4.2 ppb (4) 0.0 ppb (0) 28.0 ppb (22) 0.13 ppb (1) N/A 4.0 μg/m3 (17) 22.0
 
Jan. 20, 2020, midnight 7.6 ppb (7) 0.8 ppb (1) 6.7 ppb (6) 7.0 ppb (6) 5.4 ppb (5) 0.0 ppb (0) 27.0 ppb (21) 0.15 ppb (2) N/A 4.0 μg/m3 (17) 21.0
 
Jan. 19, 2020, 11 p.m. 5.6 ppb (5) 1.2 ppb (1) 4.9 ppb (5) 4.0 ppb (4) 3.6 ppb (3) 0.0 ppb (0) 30.0 ppb (23) 0.13 ppb (1) N/A 5.0 μg/m3 (21) 23.0
 
Jan. 19, 2020, 10 p.m. 3.5 ppb (3) 1.0 ppb (1) 3.2 ppb (3) 2.0 ppb (2) 2.2 ppb (2) 0.0 ppb (0) 31.0 ppb (24) 0.12 ppb (1) N/A 3.0 μg/m3 (12) 24.0
 
Jan. 19, 2020, 9 p.m. 3.5 ppb (3) 1.2 ppb (1) 2.8 ppb (3) 2.0 ppb (2) 1.8 ppb (2) 0.0 ppb (0) 31.0 ppb (24) 0.12 ppb (1) N/A 3.0 μg/m3 (12) 24.0
 
Jan. 19, 2020, 8 p.m. 3.6 ppb (3) 1.4 ppb (1) 2.9 ppb (3) 2.0 ppb (2) 1.8 ppb (2) 0.0 ppb (0) 30.0 ppb (23) 0.11 ppb (1) N/A 2.0 μg/m3 (8) 23.0
 
Jan. 19, 2020, 7 p.m. 3.2 ppb (3) 1.4 ppb (1) 3.0 ppb (3) 2.0 ppb (2) 1.8 ppb (2) 0.0 ppb (0) 29.0 ppb (22) 0.11 ppb (1) N/A 3.0 μg/m3 (12) 22.0
 
Jan. 19, 2020, 6 p.m. 4.4 ppb (4) 1.7 ppb (2) 4.2 ppb (4) 3.0 ppb (3) 2.5 ppb (2) 0.0 ppb (0) 27.0 ppb (21) 0.12 ppb (1) N/A 6.0 μg/m3 (25) 25.0
 
Jan. 19, 2020, 5 p.m. 17.6 ppb (16) 7.2 ppb (7) 17.6 ppb (16) 10.0 ppb (9) 9.5 ppb (9) 0.0 ppb (0) 18.0 ppb (14) 0.19 ppb (2) N/A 9.0 μg/m3 (38) 38.0
 
Jan. 19, 2020, 4 p.m. 33.0 ppb (31) 14.5 ppb (13) 32.5 ppb (30) 18.0 ppb (17) 16.1 ppb (15) 0.0 ppb (0) 8.0 ppb (6) 0.25 ppb (3) N/A 14.0 μg/m3 (54) 54.0
 
Jan. 19, 2020, 3 p.m. 40.4 ppb (37) 15.2 ppb (14) 40.1 ppb (37) 25.0 ppb (23) 21.6 ppb (20) 0.0 ppb (0) 3.0 ppb (2) 0.26 ppb (3) N/A 4.0 μg/m3 (17) 37.0
 
Jan. 19, 2020, 2 p.m. 21.0 ppb (19) 2.7 ppb (3) 19.1 ppb (18) 18.0 ppb (17) 14.7 ppb (14) 0.0 ppb (0) 9.0 ppb (7) 0.21 ppb (2) N/A 5.0 μg/m3 (21) 21.0
 
Jan. 19, 2020, 1 p.m. 32.5 ppb (30) 7.3 ppb (7) 25.0 ppb (23) 25.0 ppb (23) 19.8 ppb (18) 0.0 ppb (0) 2.0 ppb (2) 0.22 ppb (2) N/A 6.0 μg/m3 (25) 30.0
 
Jan. 19, 2020, noon 33.6 ppb (31) 8.6 ppb (8) 32.3 ppb (30) 25.0 ppb (23) 22.6 ppb (21) 0.0 ppb (0) 1.0 ppb (1) 0.25 ppb (3) N/A 5.0 μg/m3 (21) 31.0
 
Jan. 19, 2020, 11 a.m. 14.5 ppb (13) 0.7 ppb (1) 13.5 ppb (12) 14.0 ppb (13) 11.5 ppb (11) 0.0 ppb (0) 12.0 ppb (9) 0.16 ppb (2) N/A 5.0 μg/m3 (21) 21.0
 
Jan. 19, 2020, 10 a.m. 16.6 ppb (15) 1.1 ppb (1) 13.8 ppb (13) 16.0 ppb (15) 11.8 ppb (11) 0.0 ppb (0) 11.0 ppb (8) 0.18 ppb (2) N/A 6.0 μg/m3 (25) 25.0
 
Jan. 19, 2020, 9 a.m. 12.5 ppb (12) 1.0 ppb (1) 9.6 ppb (9) 12.0 ppb (11) 8.3 ppb (8) 0.0 ppb (0) 12.0 ppb (9) 0.15 ppb (2) N/A 5.0 μg/m3 (21) 21.0
 
Jan. 19, 2020, 8 a.m. 11.2 ppb (10) 0.8 ppb (1) 9.1 ppb (8) 10.0 ppb (9) 7.8 ppb (7) 0.0 ppb (0) 15.0 ppb (12) 0.16 ppb (2) N/A 9.0 μg/m3 (38) 38.0
 
Jan. 19, 2020, 7 a.m. 12.6 ppb (12) 1.0 ppb (1) 10.7 ppb (10) 12.0 ppb (11) 9.0 ppb (8) 0.0 ppb (0) 18.0 ppb (14) 0.18 ppb (2) N/A 11.0 μg/m3 (46) 46.0
 
Jan. 19, 2020, 6 a.m. 19.1 ppb (18) 1.6 ppb (1) 18.2 ppb (17) 17.0 ppb (16) 15.1 ppb (14) 0.0 ppb (0) 9.0 ppb (7) 0.27 ppb (3) N/A 8.0 μg/m3 (33) 33.0
 
Jan. 19, 2020, 5 a.m. 14.2 ppb (13) 1.4 ppb (1) 12.7 ppb (12) 13.0 ppb (12) 10.5 ppb (10) 0.0 ppb (0) 14.0 ppb (11) 0.2 ppb (2) N/A 3.0 μg/m3 (12) 13.0
 
Jan. 19, 2020, 4 a.m. 9.2 ppb (9) 1.2 ppb (1) 8.1 ppb (8) 8.0 ppb (7) 6.5 ppb (6) 0.0 ppb (0) 21.0 ppb (16) 0.15 ppb (2) N/A 2.0 μg/m3 (8) 16.0
 
Jan. 19, 2020, 3 a.m. 11.9 ppb (11) 1.2 ppb (1) 10.1 ppb (9) 11.0 ppb (10) 8.1 ppb (8) 0.0 ppb (0) 22.0 ppb (17) 0.17 ppb (2) N/A 3.0 μg/m3 (12) 17.0
 
Jan. 19, 2020, 2 a.m. 12.3 ppb (11) 1.1 ppb (1) 10.9 ppb (10) 11.0 ppb (10) 8.8 ppb (8) 0.0 ppb (0) 22.0 ppb (17) 0.19 ppb (2) N/A 5.0 μg/m3 (21) 21.0
 
Jan. 19, 2020, 1 a.m. 13.0 ppb (12) 1.0 ppb (1) 11.0 ppb (10) 12.0 ppb (11) 9.2 ppb (9) 0.0 ppb (0) 23.0 ppb (18) 0.2 ppb (2) N/A 5.0 μg/m3 (21) 21.0
 
Jan. 19, 2020, midnight 10.1 ppb (9) 0.8 ppb (1) 8.8 ppb (8) 9.0 ppb (8) 7.4 ppb (7) 0.0 ppb (0) 27.0 ppb (21) 0.17 ppb (2) N/A 1.0 μg/m3 (4) 21.0
 
Jan. 18, 2020, 11 p.m. 5.1 ppb (5) 0.8 ppb (1) 4.5 ppb (4) 4.0 ppb (4) 3.5 ppb (3) 0.0 ppb (0) 31.0 ppb (24) 0.14 ppb (2) N/A 2.0 μg/m3 (8) 24.0
 
Jan. 18, 2020, 10 p.m. 5.6 ppb (5) 1.2 ppb (1) 5.0 ppb (5) 4.0 ppb (4) 3.5 ppb (3) 0.0 ppb (0) 30.0 ppb (23) 0.13 ppb (1) N/A 4.0 μg/m3 (17) 23.0
 
Jan. 18, 2020, 9 p.m. 7.5 ppb (7) 1.4 ppb (1) 6.6 ppb (6) 6.0 ppb (6) 4.9 ppb (5) 0.0 ppb (0) 25.0 ppb (19) 0.14 ppb (2) N/A 5.0 μg/m3 (21) 21.0
 
Jan. 18, 2020, 8 p.m. 8.3 ppb (8) 2.0 ppb (2) 7.5 ppb (7) 6.0 ppb (6) 5.2 ppb (5) 0.0 ppb (0) 25.0 ppb (19) 0.15 ppb (2) N/A 5.0 μg/m3 (21) 21.0
 
Jan. 18, 2020, 7 p.m. 6.0 ppb (6) 2.1 ppb (2) 5.0 ppb (5) 4.0 ppb (4) 3.0 ppb (3) 0.0 ppb (0) 27.0 ppb (21) 0.12 ppb (1) N/A 5.0 μg/m3 (21) 21.0
 
Jan. 18, 2020, 6 p.m. 7.8 ppb (7) 2.6 ppb (2) 6.6 ppb (6) 5.0 ppb (5) 4.0 ppb (4) 0.0 ppb (0) 24.0 ppb (18) 0.13 ppb (1) N/A 5.0 μg/m3 (21) 21.0
 
Jan. 18, 2020, 5 p.m. 8.1 ppb (8) 3.2 ppb (3) 7.5 ppb (7) 5.0 ppb (5) 4.1 ppb (4) 0.0 ppb (0) 22.0 ppb (17) 0.13 ppb (1) N/A 6.0 μg/m3 (25) 25.0
 
Jan. 18, 2020, 4 p.m. 12.8 ppb (12) 3.8 ppb (4) 11.3 ppb (10) 9.0 ppb (8) 7.0 ppb (6) 0.0 ppb (0) 20.0 ppb (15) 0.15 ppb (2) N/A 3.0 μg/m3 (12) 15.0
 
Jan. 18, 2020, 3 p.m. 10.3 ppb (10) 2.0 ppb (2) 8.8 ppb (8) 8.0 ppb (7) 6.4 ppb (6) 0.0 ppb (0) 22.0 ppb (17) 0.14 ppb (2) N/A 5.0 μg/m3 (21) 21.0
 
Jan. 18, 2020, 2 p.m. 8.6 ppb (8) 1.8 ppb (2) 7.1 ppb (7) 7.0 ppb (6) 5.2 ppb (5) 0.0 ppb (0) 23.0 ppb (18) 0.13 ppb (1) N/A 5.0 μg/m3 (21) 21.0
 
Jan. 18, 2020, 1 p.m. 6.4 ppb (6) 0.7 ppb (1) 5.4 ppb (5) 6.0 ppb (6) 4.4 ppb (4) 0.0 ppb (0) 26.0 ppb (20) 0.13 ppb (1) N/A 3.0 μg/m3 (12) 20.0
 
Jan. 18, 2020, noon 4.8 ppb (4) 0.6 ppb (1) 4.0 ppb (4) 4.0 ppb (4) 3.2 ppb (3) 0.0 ppb (0) 26.0 ppb (20) 0.12 ppb (1) N/A 3.0 μg/m3 (12) 20.0
 
Jan. 18, 2020, 11 a.m. 6.4 ppb (6) 0.7 ppb (1) 5.0 ppb (5) 6.0 ppb (6) 4.1 ppb (4) 0.0 ppb (0) 24.0 ppb (18) 0.13 ppb (1) N/A 2.0 μg/m3 (8) 18.0
 
Jan. 18, 2020, 10 a.m. 5.3 ppb (5) 0.8 ppb (1) 4.2 ppb (4) 5.0 ppb (5) 3.5 ppb (3) 0.0 ppb (0) 27.0 ppb (21) 0.13 ppb (1) N/A 1.0 μg/m3 (4) 21.0
 
Jan. 18, 2020, 9 a.m. 4.6 ppb (4) 0.6 ppb (1) 3.8 ppb (4) 4.0 ppb (4) 3.2 ppb (3) 0.0 ppb (0) 27.0 ppb (21) 0.12 ppb (1) N/A 1.0 μg/m3 (4) 21.0
 
Jan. 18, 2020, 8 a.m. 4.8 ppb (4) 0.7 ppb (1) 3.8 ppb (4) 4.0 ppb (4) 3.2 ppb (3) 0.0 ppb (0) 28.0 ppb (22) 0.12 ppb (1) N/A 3.0 μg/m3 (12) 22.0
 
Jan. 18, 2020, 7 a.m. 6.2 ppb (6) 0.5 ppb (0) 5.5 ppb (5) 6.0 ppb (6) 4.4 ppb (4) 0.0 ppb (0) 27.0 ppb (21) 0.13 ppb (1) N/A 5.0 μg/m3 (21) 21.0
 
Jan. 18, 2020, 6 a.m. 7.6 ppb (7) 1.0 ppb (1) 6.5 ppb (6) 7.0 ppb (6) 5.3 ppb (5) 0.0 ppb (0) 26.0 ppb (20) 0.13 ppb (1) N/A 6.0 μg/m3 (25) 25.0
 
Jan. 18, 2020, 5 a.m. 7.0 ppb (6) 1.0 ppb (1) 6.1 ppb (6) 6.0 ppb (6) 4.9 ppb (5) 0.0 ppb (0) 26.0 ppb (20) 0.14 ppb (2) N/A 4.0 μg/m3 (17) 20.0
 
Jan. 18, 2020, 4 a.m. 11.4 ppb (11) 0.8 ppb (1) 10.4 ppb (10) 11.0 ppb (10) 8.6 ppb (8) 0.0 ppb (0) 23.0 ppb (18) 0.18 ppb (2) N/A 6.0 μg/m3 (25) 25.0
 
Jan. 18, 2020, 3 a.m. 13.5 ppb (12) 1.3 ppb (1) 12.0 ppb (11) 12.0 ppb (11) 9.7 ppb (9) 0.0 ppb (0) 22.0 ppb (17) 0.17 ppb (2) N/A 6.0 μg/m3 (25) 25.0
 
Jan. 18, 2020, 2 a.m. 24.6 ppb (23) 3.1 ppb (3) 22.4 ppb (21) 22.0 ppb (20) 17.8 ppb (16) 0.0 ppb (0) 14.0 ppb (11) 0.25 ppb (3) N/A 7.0 μg/m3 (29) 29.0
 
Jan. 18, 2020, 1 a.m. 35.2 ppb (33) 5.8 ppb (5) 31.2 ppb (29) 29.0 ppb (27) 23.6 ppb (22) 0.0 ppb (0) 8.0 ppb (6) 0.34 ppb (4) N/A 8.0 μg/m3 (33) 33.0
 
Jan. 18, 2020, midnight 18.0 ppb (17) 2.0 ppb (2) 18.2 ppb (17) 16.0 ppb (15) 14.5 ppb (13) 0.0 ppb (0) 19.0 ppb (15) 0.31 ppb (3) N/A 3.0 μg/m3 (12) 17.0
 
Jan. 17, 2020, 11 p.m. 4.9 ppb (5) 0.9 ppb (1) 4.4 ppb (4) 4.0 ppb (4) 3.4 ppb (3) 0.0 ppb (0) 31.0 ppb (24) 0.13 ppb (1) N/A 4.0 μg/m3 (17) 24.0
 
Jan. 17, 2020, 10 p.m. 3.8 ppb (4) 1.1 ppb (1) 3.3 ppb (3) 3.0 ppb (3) 2.1 ppb (2) 0.0 ppb (0) 32.0 ppb (25) 0.12 ppb (1) N/A 3.0 μg/m3 (12) 25.0
 
Jan. 17, 2020, 9 p.m. 3.2 ppb (3) 1.1 ppb (1) 2.6 ppb (2) 2.0 ppb (2) 1.5 ppb (1) 0.0 ppb (0) 33.0 ppb (25) 0.12 ppb (1) N/A 4.0 μg/m3 (17) 25.0
 
Jan. 17, 2020, 8 p.m. 3.0 ppb (3) 0.9 ppb (1) 2.4 ppb (2) 2.0 ppb (2) 1.4 ppb (1) 0.0 ppb (0) 33.0 ppb (25) 0.12 ppb (1) N/A 4.0 μg/m3 (17) 25.0
 
Jan. 17, 2020, 7 p.m. 3.3 ppb (3) 1.1 ppb (1) 2.7 ppb (3) 2.0 ppb (2) 1.5 ppb (1) 0.0 ppb (0) 32.0 ppb (25) 0.12 ppb (1) N/A 2.0 μg/m3 (8) 25.0
 
Jan. 17, 2020, 6 p.m. 4.7 ppb (4) 1.5 ppb (1) 4.0 ppb (4) 3.0 ppb (3) 2.4 ppb (2) 0.0 ppb (0) 31.0 ppb (24) 0.12 ppb (1) N/A 4.0 μg/m3 (17) 24.0
 
Jan. 17, 2020, 5 p.m. 6.5 ppb (6) 2.1 ppb (2) 5.8 ppb (5) 4.0 ppb (4) 3.7 ppb (3) 0.0 ppb (0) 30.0 ppb (23) 0.12 ppb (1) N/A 7.0 μg/m3 (29) 29.0
 
Jan. 17, 2020, 4 p.m. 11.4 ppb (11) 2.5 ppb (2) 10.7 ppb (10) 9.0 ppb (8) 7.5 ppb (7) 0.0 ppb (0) 25.0 ppb (19) 0.15 ppb (2) N/A 6.0 μg/m3 (25) 25.0
 
Jan. 17, 2020, 3 p.m. 10.2 ppb (9) 1.1 ppb (1) 9.6 ppb (9) 9.0 ppb (8) 7.7 ppb (7) 0.0 ppb (0) 25.0 ppb (19) 0.15 ppb (2) N/A 2.0 μg/m3 (8) 19.0
 
Jan. 17, 2020, 2 p.m. 6.9 ppb (6) 0.6 ppb (1) 6.6 ppb (6) 6.0 ppb (6) 5.3 ppb (5) 0.0 ppb (0) 27.0 ppb (21) 0.13 ppb (1) N/A 2.0 μg/m3 (8) 21.0
 
Jan. 17, 2020, 1 p.m. 6.4 ppb (6) 0.7 ppb (1) 5.7 ppb (5) 6.0 ppb (6) 4.8 ppb (4) 0.0 ppb (0) 27.0 ppb (21) 0.12 ppb (1) N/A 3.0 μg/m3 (12) 21.0
 
Jan. 17, 2020, noon 3.9 ppb (4) 0.8 ppb (1) 3.2 ppb (3) 3.0 ppb (3) 2.5 ppb (2) 0.0 ppb (0) 30.0 ppb (23) 0.1 ppb (1) N/A 3.0 μg/m3 (12) 23.0
 
Jan. 17, 2020, 11 a.m. 3.0 ppb (3) 0.7 ppb (1) 2.2 ppb (2) 2.0 ppb (2) 1.8 ppb (2) 0.0 ppb (0) 30.0 ppb (23) 0.1 ppb (1) N/A 3.0 μg/m3 (12) 23.0
 
Jan. 17, 2020, 10 a.m. 2.3 ppb (2) 0.4 ppb (0) 1.6 ppb (1) 2.0 ppb (2) 1.4 ppb (1) 0.0 ppb (0) 31.0 ppb (24) 0.1 ppb (1) N/A 5.0 μg/m3 (21) 24.0
 
Jan. 17, 2020, 9 a.m. 2.6 ppb (2) 0.6 ppb (1) 2.1 ppb (2) 2.0 ppb (2) 1.6 ppb (1) 0.0 ppb (0) 29.0 ppb (22) 0.1 ppb (1) N/A 5.0 μg/m3 (21) 22.0
 
Jan. 17, 2020, 8 a.m. 3.6 ppb (3) 1.0 ppb (1) 3.1 ppb (3) 3.0 ppb (3) 2.2 ppb (2) 0.0 ppb (0) 30.0 ppb (23) 0.1 ppb (1) N/A 3.0 μg/m3 (12) 23.0
 
Jan. 17, 2020, 7 a.m. 5.2 ppb (5) 0.7 ppb (1) 4.5 ppb (4) 5.0 ppb (5) 3.6 ppb (3) 0.0 ppb (0) 26.0 ppb (20) 0.12 ppb (1) N/A 6.0 μg/m3 (25) 25.0
 
Jan. 17, 2020, 6 a.m. 5.2 ppb (5) 0.9 ppb (1) 4.5 ppb (4) 4.0 ppb (4) 3.6 ppb (3) 0.0 ppb (0) 27.0 ppb (21) 0.11 ppb (1) N/A 6.0 μg/m3 (25) 25.0
 
Jan. 17, 2020, 5 a.m. 7.5 ppb (7) 0.6 ppb (1) 7.3 ppb (7) 7.0 ppb (6) 6.0 ppb (6) 0.0 ppb (0) 26.0 ppb (20) 0.14 ppb (2) N/A 5.0 μg/m3 (21) 21.0
 
Jan. 17, 2020, 4 a.m. 9.5 ppb (9) 1.0 ppb (1) 8.9 ppb (8) 9.0 ppb (8) 7.6 ppb (7) 0.0 ppb (0) 25.0 ppb (19) 0.14 ppb (2) N/A 6.0 μg/m3 (25) 25.0
 
Jan. 17, 2020, 3 a.m. 7.2 ppb (7) 1.4 ppb (1) 6.3 ppb (6) 6.0 ppb (6) 4.8 ppb (4) 0.0 ppb (0) 28.0 ppb (22) 0.12 ppb (1) N/A 5.0 μg/m3 (21) 22.0
 
Jan. 17, 2020, 2 a.m. 8.7 ppb (8) 1.3 ppb (1) 8.2 ppb (8) 7.0 ppb (6) 6.2 ppb (6) 0.0 ppb (0) 27.0 ppb (21) 0.14 ppb (2) N/A 4.0 μg/m3 (17) 21.0
 
Jan. 17, 2020, 1 a.m. 10.9 ppb (10) 2.0 ppb (2) 9.7 ppb (9) 9.0 ppb (8) 7.1 ppb (7) 0.0 ppb (0) 26.0 ppb (20) 0.14 ppb (2) N/A 5.0 μg/m3 (21) 21.0
 
Jan. 17, 2020, midnight 16.4 ppb (15) 3.1 ppb (3) 13.8 ppb (13) 13.0 ppb (12) 10.1 ppb (9) 0.0 ppb (0) 25.0 ppb (19) 0.2 ppb (2) N/A 6.0 μg/m3 (25) 25.0
 
Jan. 16, 2020, 11 p.m. 10.3 ppb (10) 2.2 ppb (2) 8.9 ppb (8) 8.0 ppb (7) 6.4 ppb (6) 0.0 ppb (0) 31.0 ppb (24) 0.15 ppb (2) N/A 6.0 μg/m3 (25) 25.0
 
Jan. 16, 2020, 10 p.m. 8.3 ppb (8) 2.0 ppb (2) 7.3 ppb (7) 6.0 ppb (6) 5.1 ppb (5) 0.0 ppb (0) 33.0 ppb (25) 0.14 ppb (2) N/A 5.0 μg/m3 (21) 25.0
 
Jan. 16, 2020, 9 p.m. 7.3 ppb (7) 2.0 ppb (2) 6.1 ppb (6) 5.0 ppb (5) 4.0 ppb (4) 0.0 ppb (0) 34.0 ppb (26) 0.13 ppb (1) N/A 3.0 μg/m3 (12) 26.0
 
Jan. 16, 2020, 8 p.m. 7.1 ppb (7) 2.3 ppb (2) 5.9 ppb (5) 5.0 ppb (5) 3.5 ppb (3) 0.0 ppb (0) 34.0 ppb (26) 0.13 ppb (1) N/A 5.0 μg/m3 (21) 26.0
 
Jan. 16, 2020, 7 p.m. 7.8 ppb (7) 3.1 ppb (3) 6.8 ppb (6) 5.0 ppb (5) 3.7 ppb (3) 0.0 ppb (0) 33.0 ppb (25) 0.13 ppb (1) N/A 3.0 μg/m3 (12) 25.0
 
Jan. 16, 2020, 6 p.m. 8.7 ppb (8) 3.4 ppb (3) 7.8 ppb (7) 5.0 ppb (5) 4.3 ppb (4) 0.0 ppb (0) 32.0 ppb (25) 0.14 ppb (2) N/A 3.0 μg/m3 (12) 25.0
 
Jan. 16, 2020, 5 p.m. 11.2 ppb (10) 3.8 ppb (4) 9.7 ppb (9) 7.0 ppb (6) 5.8 ppb (5) 0.0 ppb (0) 29.0 ppb (22) 0.14 ppb (2) N/A 5.0 μg/m3 (21) 22.0
 
Jan. 16, 2020, 4 p.m. 13.5 ppb (12) 3.8 ppb (4) 11.5 ppb (11) 10.0 ppb (9) 7.4 ppb (7) 0.0 ppb (0) 27.0 ppb (21) 0.16 ppb (2) N/A 4.0 μg/m3 (17) 21.0
 
Jan. 16, 2020, 3 p.m. 12.7 ppb (12) 3.1 ppb (3) 11.3 ppb (10) 10.0 ppb (9) 7.7 ppb (7) 0.0 ppb (0) 27.0 ppb (21) 0.16 ppb (2) N/A 4.0 μg/m3 (17) 21.0
 
Jan. 16, 2020, 2 p.m. 10.1 ppb (9) 2.8 ppb (3) 8.4 ppb (8) 7.0 ppb (6) 5.6 ppb (5) 0.0 ppb (0) 29.0 ppb (22) 0.14 ppb (2) N/A 4.0 μg/m3 (17) 22.0
 
Jan. 16, 2020, 1 p.m. 9.8 ppb (9) 2.5 ppb (2) 7.7 ppb (7) 7.0 ppb (6) 5.2 ppb (5) 0.0 ppb (0) 27.0 ppb (21) 0.15 ppb (2) N/A 4.0 μg/m3 (17) 21.0
 
Jan. 16, 2020, noon 7.0 ppb (6) 1.6 ppb (1) 5.8 ppb (5) 5.0 ppb (5) 4.0 ppb (4) 0.0 ppb (0) 29.0 ppb (22) 0.13 ppb (1) N/A 3.0 μg/m3 (12) 22.0
 
Jan. 16, 2020, 11 a.m. 4.2 ppb (4) 0.5 ppb (0) 3.3 ppb (3) 4.0 ppb (4) 2.6 ppb (2) 0.0 ppb (0) 31.0 ppb (24) 0.11 ppb (1) N/A 5.0 μg/m3 (21) 24.0
 
Jan. 16, 2020, 10 a.m. 2.1 ppb (2) 0.5 ppb (0) 1.3 ppb (1) 2.0 ppb (2) 1.0 ppb (1) 0.0 ppb (0) 33.0 ppb (25) 0.11 ppb (1) N/A 7.0 μg/m3 (29) 29.0
 
Jan. 16, 2020, 9 a.m. 2.3 ppb (2) 0.5 ppb (0) 1.6 ppb (1) 2.0 ppb (2) 1.2 ppb (1) 0.0 ppb (0) 33.0 ppb (25) 0.11 ppb (1) N/A 5.0 μg/m3 (21) 25.0
 
Jan. 16, 2020, 8 a.m. 2.1 ppb (2) 0.2 ppb (0) 1.8 ppb (2) 2.0 ppb (2) 1.4 ppb (1) 0.0 ppb (0) 32.0 ppb (25) 0.1 ppb (1) N/A 6.0 μg/m3 (25) 25.0
 
Jan. 16, 2020, 7 a.m. 2.4 ppb (2) 0.7 ppb (1) 1.7 ppb (2) 2.0 ppb (2) 1.3 ppb (1) 0.0 ppb (0) 31.0 ppb (24) 0.11 ppb (1) N/A 2.0 μg/m3 (8) 24.0
 
Jan. 16, 2020, 6 a.m. 2.3 ppb (2) 0.7 ppb (1) 1.6 ppb (1) 2.0 ppb (2) 1.2 ppb (1) 0.0 ppb (0) 32.0 ppb (25) 0.11 ppb (1) N/A 3.0 μg/m3 (12) 25.0
 
Jan. 16, 2020, 5 a.m. 2.3 ppb (2) 0.8 ppb (1) 1.4 ppb (1) 1.0 ppb (1) 1.0 ppb (1) 0.0 ppb (0) 34.0 ppb (26) 0.11 ppb (1) N/A 4.0 μg/m3 (17) 26.0
 
Jan. 16, 2020, 4 a.m. 3.0 ppb (3) 0.7 ppb (1) 2.2 ppb (2) 2.0 ppb (2) 1.6 ppb (1) 0.0 ppb (0) 35.0 ppb (27) 0.11 ppb (1) N/A 5.0 μg/m3 (21) 27.0
 
Jan. 16, 2020, 3 a.m. 3.8 ppb (4) 0.9 ppb (1) 2.9 ppb (3) 3.0 ppb (3) 2.0 ppb (2) 0.0 ppb (0) 35.0 ppb (27) 0.12 ppb (1) N/A 1.0 μg/m3 (4) 27.0
 
Jan. 16, 2020, 2 a.m. 3.4 ppb (3) 0.7 ppb (1) 2.6 ppb (2) 3.0 ppb (3) 1.8 ppb (2) 0.0 ppb (0) 36.0 ppb (28) 0.11 ppb (1) N/A 0.0 μg/m3 (0) 28.0
 
Jan. 16, 2020, 1 a.m. 6.3 ppb (6) 1.5 ppb (1) 5.1 ppb (5) 5.0 ppb (5) 3.7 ppb (3) 0.0 ppb (0) 34.0 ppb (26) 0.13 ppb (1) N/A 3.0 μg/m3 (12) 26.0
 
Jan. 16, 2020, midnight 7.7 ppb (7) 1.5 ppb (1) 6.5 ppb (6) 6.0 ppb (6) 4.8 ppb (4) 0.0 ppb (0) 33.0 ppb (25) 0.14 ppb (2) N/A 3.0 μg/m3 (12) 25.0
 
Jan. 15, 2020, 11 p.m. 8.6 ppb (8) 2.1 ppb (2) 7.5 ppb (7) 6.0 ppb (6) 5.2 ppb (5) 0.0 ppb (0) 32.0 ppb (25) 0.14 ppb (2) N/A 1.0 μg/m3 (4) 25.0
 
Jan. 15, 2020, 10 p.m. 6.8 ppb (6) 2.2 ppb (2) 5.8 ppb (5) 5.0 ppb (5) 3.7 ppb (3) 0.0 ppb (0) 34.0 ppb (26) 0.13 ppb (1) N/A 3.0 μg/m3 (12) 26.0
 
Jan. 15, 2020, 9 p.m. 6.7 ppb (6) 2.4 ppb (2) 5.6 ppb (5) 4.0 ppb (4) 3.1 ppb (3) 0.0 ppb (0) 34.0 ppb (26) 0.12 ppb (1) N/A 2.0 μg/m3 (8) 26.0
 
Jan. 15, 2020, 8 p.m. 6.1 ppb (6) 2.7 ppb (3) 5.2 ppb (5) 3.0 ppb (3) 2.5 ppb (2) 0.0 ppb (0) 35.0 ppb (27) 0.12 ppb (1) N/A 2.0 μg/m3 (8) 27.0
 
Jan. 15, 2020, 7 p.m. 6.9 ppb (6) 3.1 ppb (3) 5.9 ppb (5) 4.0 ppb (4) 2.8 ppb (3) 0.0 ppb (0) 34.0 ppb (26) 0.12 ppb (1) N/A 2.0 μg/m3 (8) 26.0
 
Jan. 15, 2020, 6 p.m. 8.0 ppb (7) 3.6 ppb (3) 7.0 ppb (6) 4.0 ppb (4) 3.4 ppb (3) 0.0 ppb (0) 33.0 ppb (25) 0.13 ppb (1) N/A 2.0 μg/m3 (8) 25.0
 
Jan. 15, 2020, 5 p.m. 10.5 ppb (10) 4.0 ppb (4) 9.4 ppb (9) 7.0 ppb (6) 5.3 ppb (5) 0.0 ppb (0) 31.0 ppb (24) 0.14 ppb (2) N/A 2.0 μg/m3 (8) 24.0
 
Jan. 15, 2020, 4 p.m. 16.2 ppb (15) 4.2 ppb (4) 14.5 ppb (13) 12.0 ppb (11) 9.7 ppb (9) 0.0 ppb (0) 25.0 ppb (19) 0.17 ppb (2) N/A 2.0 μg/m3 (8) 19.0
 
Jan. 15, 2020, 3 p.m. 27.3 ppb (25) 5.2 ppb (5) 24.6 ppb (23) 22.0 ppb (20) 17.7 ppb (16) 0.0 ppb (0) 16.0 ppb (12) 0.2 ppb (2) N/A 4.0 μg/m3 (17) 25.0
 
Jan. 15, 2020, 2 p.m. 47.5 ppb (44) 17.1 ppb (16) 40.3 ppb (37) 30.0 ppb (28) 24.6 ppb (23) 1.0 ppb (1) 6.0 ppb (5) 0.29 ppb (3) N/A 7.0 μg/m3 (29) 44.0
 
Jan. 15, 2020, 1 p.m. 39.6 ppb (37) 13.2 ppb (12) 39.9 ppb (37) 26.0 ppb (24) 23.3 ppb (22) 0.0 ppb (0) 7.0 ppb (5) 0.27 ppb (3) N/A 3.0 μg/m3 (12) 37.0
 
Jan. 15, 2020, noon 24.4 ppb (23) 3.6 ppb (3) 21.6 ppb (20) 21.0 ppb (19) 16.7 ppb (15) 0.0 ppb (0) 15.0 ppb (12) 0.2 ppb (2) N/A 4.0 μg/m3 (17) 23.0
 
Jan. 15, 2020, 11 a.m. 27.9 ppb (26) 3.8 ppb (4) 23.9 ppb (22) 24.0 ppb (22) 18.9 ppb (18) 0.0 ppb (0) 11.0 ppb (8) 0.21 ppb (2) N/A 8.0 μg/m3 (33) 33.0
 
Jan. 15, 2020, 10 a.m. 30.5 ppb (28) 4.2 ppb (4) 28.4 ppb (26) 26.0 ppb (24) 22.0 ppb (20) 0.0 ppb (0) 6.0 ppb (5) 0.25 ppb (3) N/A 14.0 μg/m3 (54) 54.0
 
Jan. 15, 2020, 9 a.m. 32.0 ppb (30) 4.8 ppb (4) 27.8 ppb (26) 27.0 ppb (25) 22.2 ppb (21) 0.0 ppb (0) 6.0 ppb (5) 0.27 ppb (3) N/A 9.0 μg/m3 (38) 38.0
 
Jan. 15, 2020, 8 a.m. 39.1 ppb (36) 6.8 ppb (6) 27.8 ppb (26) 32.0 ppb (30) 22.2 ppb (21) 0.0 ppb (0) 4.0 ppb (3) 0.26 ppb (3) N/A 9.0 μg/m3 (38) 38.0
 
Jan. 15, 2020, 7 a.m. 34.4 ppb (32) 5.4 ppb (5) 28.3 ppb (26) 29.0 ppb (27) 22.0 ppb (20) 0.0 ppb (0) 7.0 ppb (5) 0.33 ppb (4) N/A 7.0 μg/m3 (29) 32.0
 
Jan. 15, 2020, 6 a.m. 45.6 ppb (42) 11.4 ppb (11) 38.7 ppb (36) 34.0 ppb (31) 27.5 ppb (25) 0.0 ppb (0) 5.0 ppb (4) 0.48 ppb (5) N/A 16.0 μg/m3 (59) 59.0
 
Jan. 15, 2020, 5 a.m. 23.7 ppb (22) 1.7 ppb (2) 21.2 ppb (20) 22.0 ppb (20) 17.8 ppb (16) 0.0 ppb (0) 14.0 ppb (11) 0.24 ppb (3) N/A 9.0 μg/m3 (38) 38.0
 
Jan. 15, 2020, 4 a.m. 27.0 ppb (25) 2.0 ppb (2) 24.1 ppb (22) 25.0 ppb (23) 20.2 ppb (19) 0.0 ppb (0) 14.0 ppb (11) 0.24 ppb (3) N/A 8.0 μg/m3 (33) 33.0
 
Jan. 15, 2020, 3 a.m. 35.0 ppb (32) 4.5 ppb (4) 31.7 ppb (29) 30.0 ppb (28) 25.0 ppb (23) 0.0 ppb (0) 8.0 ppb (6) 0.34 ppb (4) N/A 12.0 μg/m3 (50) 50.0
 
Jan. 15, 2020, 2 a.m. 34.7 ppb (32) 5.1 ppb (5) 31.1 ppb (29) 30.0 ppb (28) 23.9 ppb (22) 0.0 ppb (0) 10.0 ppb (8) 0.32 ppb (4) N/A 7.0 μg/m3 (29) 32.0
 
Jan. 15, 2020, 1 a.m. 32.3 ppb (30) 4.0 ppb (4) 28.6 ppb (26) 28.0 ppb (26) 22.6 ppb (21) 0.0 ppb (0) 12.0 ppb (9) 0.27 ppb (3) N/A 8.0 μg/m3 (33) 33.0
 
Jan. 15, 2020, midnight 23.0 ppb (21) 2.9 ppb (3) 20.5 ppb (19) 20.0 ppb (19) 15.9 ppb (15) 0.0 ppb (0) 19.0 ppb (15) 0.24 ppb (3) N/A 7.0 μg/m3 (29) 29.0
 
Jan. 14, 2020, 11 p.m. 18.8 ppb (17) 3.5 ppb (3) 17.1 ppb (16) 15.0 ppb (14) 12.5 ppb (12) 0.0 ppb (0) 24.0 ppb (18) 0.22 ppb (2) N/A 5.0 μg/m3 (21) 21.0
 
Jan. 14, 2020, 10 p.m. 15.5 ppb (14) 3.4 ppb (3) 14.1 ppb (13) 12.0 ppb (11) 9.8 ppb (9) 0.0 ppb (0) 26.0 ppb (20) 0.19 ppb (2) N/A 2.0 μg/m3 (8) 20.0
 
Jan. 14, 2020, 9 p.m. 5.7 ppb (5) 1.0 ppb (1) 5.2 ppb (5) 5.0 ppb (5) 3.8 ppb (4) 0.0 ppb (0) 32.0 ppb (25) 0.14 ppb (2) N/A 3.0 μg/m3 (12) 25.0
 
Jan. 14, 2020, 8 p.m. 5.4 ppb (5) 1.4 ppb (1) 5.1 ppb (5) 4.0 ppb (4) 3.3 ppb (3) 0.0 ppb (0) 34.0 ppb (26) 0.14 ppb (2) N/A 5.0 μg/m3 (21) 26.0
 
Jan. 14, 2020, 7 p.m. 10.6 ppb (10) 4.2 ppb (4) 9.8 ppb (9) 6.0 ppb (6) 5.4 ppb (5) 0.0 ppb (0) 32.0 ppb (25) 0.15 ppb (2) N/A 6.0 μg/m3 (25) 25.0