AQSQID: 160010010

Site Name: St. Lukes Meridian

Location: Meridian (Whiteriver Dr), ID

Reporting: True, Located: True

Current AQI: 29.0

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
March 29, 2020, 3 a.m. 7.9 ppb (7) 0.6 ppb (1) 6.6 ppb (6) 7.0 ppb (6) 5.6 ppb (5) 0.0 ppb (0) 29.0 ppb (22) 0.2 ppb (2) N/A 7.0 μg/m3 (29) 29.0
 
March 29, 2020, 2 a.m. 3.2 ppb (3) 0.6 ppb (1) 3.1 ppb (3) 3.0 ppb (3) 2.7 ppb (3) 0.0 ppb (0) 35.0 ppb (27) 0.14 ppb (2) N/A 3.0 μg/m3 (12) 27.0
 
March 29, 2020, 1 a.m. 3.4 ppb (3) 0.7 ppb (1) 1.9 ppb (2) 3.0 ppb (3) 1.5 ppb (1) 0.0 ppb (0) 36.0 ppb (28) 0.13 ppb (1) N/A 2.0 μg/m3 (8) 28.0
 
March 29, 2020, midnight 2.2 ppb (2) 0.6 ppb (1) 0.9 ppb (1) 2.0 ppb (2) 0.4 ppb (0) 0.0 ppb (0) 39.0 ppb (30) 0.12 ppb (1) N/A 5.0 μg/m3 (21) 30.0
 
March 28, 2020, 11 p.m. 1.9 ppb (2) 0.2 ppb (0) 1.0 ppb (1) 2.0 ppb (2) 0.4 ppb (0) 0.0 ppb (0) 40.0 ppb (31) 0.13 ppb (1) N/A 6.0 μg/m3 (25) 31.0
 
March 28, 2020, 10 p.m. 1.7 ppb (2) 0.4 ppb (0) 0.5 ppb (0) 1.0 ppb (1) 0.1 ppb (0) 0.0 ppb (0) 40.0 ppb (31) 0.12 ppb (1) N/A 2.0 μg/m3 (8) 31.0
 
March 28, 2020, 9 p.m. 2.2 ppb (2) 0.8 ppb (1) 0.8 ppb (1) 1.0 ppb (1) 0.3 ppb (0) 0.0 ppb (0) 41.0 ppb (32) 0.12 ppb (1) N/A 5.0 μg/m3 (21) 32.0
 
March 28, 2020, 8 p.m. 2.4 ppb (2) 0.8 ppb (1) 1.1 ppb (1) 2.0 ppb (2) 0.5 ppb (0) 0.0 ppb (0) 40.0 ppb (31) 0.13 ppb (1) N/A 7.0 μg/m3 (29) 31.0
 
March 28, 2020, 7 p.m. 2.9 ppb (3) 1.0 ppb (1) 1.7 ppb (2) 2.0 ppb (2) 0.8 ppb (1) 0.0 ppb (0) 39.0 ppb (30) 0.14 ppb (2) N/A 5.0 μg/m3 (21) 30.0
 
March 28, 2020, 6 p.m. 2.8 ppb (3) 1.1 ppb (1) 1.7 ppb (2) 2.0 ppb (2) 0.8 ppb (1) 0.0 ppb (0) 38.0 ppb (29) 0.13 ppb (1) N/A 5.0 μg/m3 (21) 29.0
 
March 28, 2020, 5 p.m. 7.9 ppb (7) 2.7 ppb (3) 6.8 ppb (6) 5.0 ppb (5) 3.8 ppb (4) 0.0 ppb (0) 33.0 ppb (25) 0.16 ppb (2) N/A 7.0 μg/m3 (29) 29.0
 
March 28, 2020, 4 p.m. 13.5 ppb (12) 4.6 ppb (4) 13.0 ppb (12) 9.0 ppb (8) 7.5 ppb (7) 0.0 ppb (0) 25.0 ppb (19) 0.18 ppb (2) N/A 10.0 μg/m3 (42) 42.0
 
March 28, 2020, 3 p.m. 14.3 ppb (13) 3.4 ppb (3) 13.6 ppb (13) 11.0 ppb (10) 9.1 ppb (8) 0.0 ppb (0) 19.0 ppb (15) 0.18 ppb (2) N/A 13.0 μg/m3 (52) 52.0
 
March 28, 2020, 2 p.m. 29.6 ppb (27) 8.5 ppb (8) 28.1 ppb (26) 21.0 ppb (19) 18.2 ppb (17) 0.0 ppb (0) 7.0 ppb (5) 0.25 ppb (3) N/A 11.0 μg/m3 (46) 46.0
 
March 28, 2020, 1 p.m. 34.8 ppb (32) 8.3 ppb (8) 34.5 ppb (32) 27.0 ppb (25) 22.8 ppb (21) 0.0 ppb (0) 2.0 ppb (2) 0.28 ppb (3) N/A 15.0 μg/m3 (56) 56.0
 
March 28, 2020, noon 19.6 ppb (18) 3.6 ppb (3) 20.2 ppb (19) 16.0 ppb (15) 15.0 ppb (14) 0.0 ppb (0) 11.0 ppb (8) 0.2 ppb (2) N/A 13.0 μg/m3 (52) 52.0
 
March 28, 2020, 11 a.m. 7.6 ppb (7) 0.4 ppb (0) 7.2 ppb (7) 7.0 ppb (6) 6.0 ppb (6) 0.0 ppb (0) 23.0 ppb (18) 0.15 ppb (2) N/A 10.0 μg/m3 (42) 42.0
 
March 28, 2020, 10 a.m. 6.9 ppb (6) 0.2 ppb (0) 6.6 ppb (6) 7.0 ppb (6) 5.7 ppb (5) 0.0 ppb (0) 22.0 ppb (17) 0.14 ppb (2) N/A 12.0 μg/m3 (50) 50.0
 
March 28, 2020, 9 a.m. 5.9 ppb (5) 0.4 ppb (0) 5.6 ppb (5) 6.0 ppb (6) 4.6 ppb (4) 0.0 ppb (0) 23.0 ppb (18) 0.15 ppb (2) N/A 9.0 μg/m3 (38) 38.0
 
March 28, 2020, 8 a.m. 5.6 ppb (5) 0.2 ppb (0) 5.3 ppb (5) 5.0 ppb (5) 4.5 ppb (4) 0.0 ppb (0) 24.0 ppb (18) 0.15 ppb (2) N/A 11.0 μg/m3 (46) 46.0
 
March 28, 2020, 7 a.m. 4.4 ppb (4) 0.0 ppb (0) 4.2 ppb (4) 4.0 ppb (4) 3.5 ppb (3) 0.0 ppb (0) 28.0 ppb (22) 0.15 ppb (2) N/A 9.0 μg/m3 (38) 38.0
 
March 28, 2020, 6 a.m. 5.1 ppb (5) 0.2 ppb (0) 4.5 ppb (4) 5.0 ppb (5) 3.7 ppb (3) 0.0 ppb (0) 30.0 ppb (23) 0.15 ppb (2) N/A 6.0 μg/m3 (25) 25.0
 
March 28, 2020, 5 a.m. 5.2 ppb (5) 0.5 ppb (0) 4.3 ppb (4) 5.0 ppb (5) 3.5 ppb (3) 0.0 ppb (0) 32.0 ppb (25) 0.15 ppb (2) N/A 8.0 μg/m3 (33) 33.0
 
March 28, 2020, 4 a.m. 5.1 ppb (5) 0.2 ppb (0) 4.4 ppb (4) 5.0 ppb (5) 3.7 ppb (3) 0.0 ppb (0) 33.0 ppb (25) 0.15 ppb (2) N/A 14.0 μg/m3 (54) 54.0
 
March 28, 2020, 3 a.m. 5.1 ppb (5) 0.5 ppb (0) 4.1 ppb (4) 5.0 ppb (5) 3.5 ppb (3) 0.0 ppb (0) 35.0 ppb (27) 0.15 ppb (2) N/A 9.0 μg/m3 (38) 38.0
 
March 28, 2020, 2 a.m. 4.9 ppb (5) 0.5 ppb (0) 3.8 ppb (4) 4.0 ppb (4) 3.2 ppb (3) 0.0 ppb (0) 37.0 ppb (28) 0.15 ppb (2) N/A 9.0 μg/m3 (38) 38.0
 
March 28, 2020, 1 a.m. 3.1 ppb (3) 0.3 ppb (0) 2.2 ppb (2) 3.0 ppb (3) 1.7 ppb (2) 0.0 ppb (0) 40.0 ppb (31) 0.14 ppb (2) N/A 6.0 μg/m3 (25) 31.0
 
March 28, 2020, midnight 2.7 ppb (3) 0.7 ppb (1) 1.3 ppb (1) 2.0 ppb (2) 0.8 ppb (1) 0.0 ppb (0) 43.0 ppb (33) 0.13 ppb (1) N/A 7.0 μg/m3 (29) 33.0
 
March 27, 2020, 11 p.m. 2.2 ppb (2) 0.4 ppb (0) 1.3 ppb (1) 2.0 ppb (2) 0.8 ppb (1) 0.0 ppb (0) 43.0 ppb (33) 0.14 ppb (2) N/A 10.0 μg/m3 (42) 42.0
 
March 27, 2020, 10 p.m. 2.3 ppb (2) 0.6 ppb (1) 1.4 ppb (1) 2.0 ppb (2) 0.8 ppb (1) 0.0 ppb (0) 43.0 ppb (33) 0.14 ppb (2) N/A 12.0 μg/m3 (50) 50.0
 
March 27, 2020, 9 p.m. 2.8 ppb (3) 0.9 ppb (1) 1.9 ppb (2) 2.0 ppb (2) 1.1 ppb (1) 0.0 ppb (0) 43.0 ppb (33) 0.14 ppb (2) N/A 9.0 μg/m3 (38) 38.0
 
March 27, 2020, 8 p.m. 2.7 ppb (3) 0.6 ppb (1) 2.1 ppb (2) 2.0 ppb (2) 1.3 ppb (1) 0.0 ppb (0) 42.0 ppb (32) 0.14 ppb (2) N/A 8.0 μg/m3 (33) 33.0
 
March 27, 2020, 7 p.m. 3.0 ppb (3) 1.1 ppb (1) 2.2 ppb (2) 2.0 ppb (2) 1.2 ppb (1) 0.0 ppb (0) 41.0 ppb (32) 0.14 ppb (2) N/A N/A 32.0
 
March 27, 2020, 6 p.m. 3.7 ppb (3) 1.2 ppb (1) 2.8 ppb (3) 2.0 ppb (2) 1.5 ppb (1) 0.0 ppb (0) 37.0 ppb (28) 0.14 ppb (2) N/A 8.0 μg/m3 (33) 33.0
 
March 27, 2020, 5 p.m. 6.5 ppb (6) 2.2 ppb (2) 5.6 ppb (5) 4.0 ppb (4) 3.2 ppb (3) 0.0 ppb (0) 32.0 ppb (25) 0.15 ppb (2) N/A 9.0 μg/m3 (38) 38.0
 
March 27, 2020, 4 p.m. 17.5 ppb (16) 7.0 ppb (6) 16.2 ppb (15) 10.0 ppb (9) 8.2 ppb (8) 0.0 ppb (0) 23.0 ppb (18) 0.18 ppb (2) N/A 12.0 μg/m3 (50) 50.0
 
March 27, 2020, 3 p.m. 67.0 ppb (64) 42.7 ppb (40) 60.8 ppb (57) 24.0 ppb (22) 19.8 ppb (18) 1.0 ppb (1) 8.0 ppb (6) 0.33 ppb (4) N/A 13.0 μg/m3 (52) 64.0
 
March 27, 2020, 2 p.m. 86.8 ppb (85) 59.7 ppb (56) 85.6 ppb (84) 27.0 ppb (25) 23.7 ppb (22) 1.0 ppb (1) 1.0 ppb (1) 0.41 ppb (5) N/A 14.0 μg/m3 (54) 85.0
 
March 27, 2020, 1 p.m. 62.3 ppb (59) 37.3 ppb (35) 64.2 ppb (61) 25.0 ppb (23) 22.0 ppb (20) 1.0 ppb (1) 0.0 ppb (0) 0.33 ppb (4) N/A 10.0 μg/m3 (42) 61.0
 
March 27, 2020, noon 49.8 ppb (46) 25.8 ppb (24) 47.7 ppb (44) 24.0 ppb (22) 20.8 ppb (19) 1.0 ppb (1) 0.0 ppb (0) 0.28 ppb (3) N/A 9.0 μg/m3 (38) 46.0
 
March 27, 2020, 11 a.m. 35.7 ppb (33) 12.3 ppb (11) 33.2 ppb (31) 23.0 ppb (21) 19.6 ppb (18) 1.0 ppb (1) 2.0 ppb (2) 0.24 ppb (3) N/A 7.0 μg/m3 (29) 33.0
 
March 27, 2020, 10 a.m. 34.7 ppb (32) 9.7 ppb (9) 29.4 ppb (27) 25.0 ppb (23) 20.4 ppb (19) 0.0 ppb (0) 3.0 ppb (2) 0.27 ppb (3) N/A 9.0 μg/m3 (38) 38.0
 
March 27, 2020, 9 a.m. 45.6 ppb (42) 17.0 ppb (16) 47.8 ppb (44) 29.0 ppb (27) 25.9 ppb (24) 1.0 ppb (1) 2.0 ppb (2) 0.31 ppb (3) N/A 12.0 μg/m3 (50) 50.0
 
March 27, 2020, 8 a.m. 28.5 ppb (26) 2.3 ppb (2) 25.1 ppb (23) 26.0 ppb (24) 21.0 ppb (19) 0.0 ppb (0) 5.0 ppb (4) 0.25 ppb (3) N/A 10.0 μg/m3 (42) 42.0
 
March 27, 2020, 7 a.m. 24.6 ppb (23) 3.7 ppb (3) 20.3 ppb (19) 21.0 ppb (19) 15.9 ppb (15) 0.0 ppb (0) 8.0 ppb (6) 0.22 ppb (2) N/A 12.0 μg/m3 (50) 50.0
 
March 27, 2020, 6 a.m. 34.2 ppb (32) 7.2 ppb (7) 27.4 ppb (25) 27.0 ppb (25) 21.4 ppb (20) 0.0 ppb (0) 4.0 ppb (3) 0.34 ppb (4) N/A 15.0 μg/m3 (56) 56.0
 
March 27, 2020, 5 a.m. 47.0 ppb (44) 13.3 ppb (12) 31.2 ppb (29) 34.0 ppb (31) 23.5 ppb (22) 1.0 ppb (1) 3.0 ppb (2) 0.39 ppb (4) N/A 13.0 μg/m3 (52) 52.0
 
March 27, 2020, 4 a.m. 57.2 ppb (53) 18.4 ppb (17) 42.4 ppb (39) 39.0 ppb (36) 31.0 ppb (29) 1.0 ppb (1) 1.0 ppb (1) 0.36 ppb (4) N/A 12.0 μg/m3 (50) 53.0
 
March 27, 2020, 3 a.m. 19.0 ppb (18) 2.8 ppb (3) 22.0 ppb (20) 16.0 ppb (15) 15.5 ppb (14) 0.0 ppb (0) 19.0 ppb (15) 0.23 ppb (3) N/A 9.0 μg/m3 (38) 38.0
 
March 27, 2020, 2 a.m. 5.4 ppb (5) 0.5 ppb (0) 4.1 ppb (4) 5.0 ppb (5) 3.4 ppb (3) 0.0 ppb (0) 34.0 ppb (26) 0.15 ppb (2) N/A 5.0 μg/m3 (21) 26.0
 
March 27, 2020, 1 a.m. 2.2 ppb (2) 0.3 ppb (0) 1.0 ppb (1) 2.0 ppb (2) 0.7 ppb (1) 0.0 ppb (0) 40.0 ppb (31) 0.13 ppb (1) N/A 6.0 μg/m3 (25) 31.0
 
March 27, 2020, midnight 2.7 ppb (3) 0.8 ppb (1) 1.4 ppb (1) 2.0 ppb (2) 0.9 ppb (1) 0.0 ppb (0) 39.0 ppb (30) 0.12 ppb (1) N/A 6.0 μg/m3 (25) 30.0
 
March 26, 2020, 11 p.m. 2.7 ppb (3) 0.7 ppb (1) 1.9 ppb (2) 2.0 ppb (2) 1.1 ppb (1) 0.0 ppb (0) 40.0 ppb (31) 0.13 ppb (1) N/A 5.0 μg/m3 (21) 31.0
 
March 26, 2020, 10 p.m. 2.7 ppb (3) 0.7 ppb (1) 1.9 ppb (2) 2.0 ppb (2) 0.9 ppb (1) 0.0 ppb (0) 40.0 ppb (31) 0.13 ppb (1) N/A 6.0 μg/m3 (25) 31.0
 
March 26, 2020, 9 p.m. 2.7 ppb (3) 0.7 ppb (1) 1.7 ppb (2) 2.0 ppb (2) 0.8 ppb (1) 0.0 ppb (0) 39.0 ppb (30) 0.13 ppb (1) N/A 4.0 μg/m3 (17) 30.0
 
March 26, 2020, 8 p.m. 2.4 ppb (2) 0.8 ppb (1) 1.6 ppb (1) 2.0 ppb (2) 0.6 ppb (1) 0.0 ppb (0) 38.0 ppb (29) 0.12 ppb (1) N/A 2.0 μg/m3 (8) 29.0
 
March 26, 2020, 7 p.m. 2.4 ppb (2) 0.9 ppb (1) 1.3 ppb (1) 1.0 ppb (1) 0.5 ppb (0) 0.0 ppb (0) 37.0 ppb (28) 0.12 ppb (1) N/A 1.0 μg/m3 (4) 28.0
 
March 26, 2020, 6 p.m. 3.0 ppb (3) 1.2 ppb (1) 2.0 ppb (2) 2.0 ppb (2) 0.8 ppb (1) 0.0 ppb (0) 34.0 ppb (26) 0.12 ppb (1) N/A 2.0 μg/m3 (8) 26.0
 
March 26, 2020, 5 p.m. 4.9 ppb (5) 2.0 ppb (2) 3.9 ppb (4) 3.0 ppb (3) 1.7 ppb (2) 0.0 ppb (0) 30.0 ppb (23) 0.12 ppb (1) N/A 4.0 μg/m3 (17) 23.0
 
March 26, 2020, 4 p.m. 9.5 ppb (9) 3.8 ppb (4) 8.5 ppb (8) 6.0 ppb (6) 4.2 ppb (4) 0.0 ppb (0) 25.0 ppb (19) 0.13 ppb (1) N/A 6.0 μg/m3 (25) 25.0
 
March 26, 2020, 3 p.m. 17.7 ppb (16) 7.4 ppb (7) 16.5 ppb (15) 10.0 ppb (9) 8.6 ppb (8) 0.0 ppb (0) 19.0 ppb (15) 0.18 ppb (2) N/A 4.0 μg/m3 (17) 17.0
 
March 26, 2020, 2 p.m. 28.0 ppb (26) 8.9 ppb (8) 25.7 ppb (24) 19.0 ppb (18) 15.3 ppb (14) 0.0 ppb (0) 11.0 ppb (8) 0.23 ppb (3) N/A 7.0 μg/m3 (29) 29.0
 
March 26, 2020, 1 p.m. 19.5 ppb (18) 2.1 ppb (2) 17.8 ppb (16) 17.0 ppb (16) 14.1 ppb (13) 0.0 ppb (0) 10.0 ppb (8) 0.19 ppb (2) N/A 5.0 μg/m3 (21) 21.0
 
March 26, 2020, noon 11.4 ppb (11) 0.8 ppb (1) 11.2 ppb (10) 11.0 ppb (10) 9.3 ppb (9) 0.0 ppb (0) 15.0 ppb (12) 0.15 ppb (2) N/A 6.0 μg/m3 (25) 25.0
 
March 26, 2020, 11 a.m. 6.6 ppb (6) 0.7 ppb (1) 5.7 ppb (5) 6.0 ppb (6) 4.6 ppb (4) 0.0 ppb (0) 21.0 ppb (16) 0.12 ppb (1) N/A 6.0 μg/m3 (25) 25.0
 
March 26, 2020, 10 a.m. 5.8 ppb (5) 0.7 ppb (1) 5.1 ppb (5) 5.0 ppb (5) 3.9 ppb (4) 0.0 ppb (0) 22.0 ppb (17) 0.11 ppb (1) N/A 5.0 μg/m3 (21) 21.0
 
March 26, 2020, 9 a.m. 8.6 ppb (8) 1.7 ppb (2) 7.3 ppb (7) 7.0 ppb (6) 5.2 ppb (5) 0.0 ppb (0) 20.0 ppb (15) 0.11 ppb (1) N/A 5.0 μg/m3 (21) 21.0
 
March 26, 2020, 8 a.m. 6.4 ppb (6) 0.9 ppb (1) 5.5 ppb (5) 5.0 ppb (5) 4.1 ppb (4) 0.0 ppb (0) 22.0 ppb (17) 0.12 ppb (1) N/A 3.0 μg/m3 (12) 17.0
 
March 26, 2020, 7 a.m. 6.7 ppb (6) 1.0 ppb (1) 5.8 ppb (5) 6.0 ppb (6) 4.6 ppb (4) 0.0 ppb (0) 23.0 ppb (18) 0.12 ppb (1) N/A 3.0 μg/m3 (12) 18.0
 
March 26, 2020, 6 a.m. 5.8 ppb (5) 0.8 ppb (1) 4.7 ppb (4) 5.0 ppb (5) 3.8 ppb (4) 0.0 ppb (0) 26.0 ppb (20) 0.12 ppb (1) N/A 5.0 μg/m3 (21) 21.0
 
March 26, 2020, 5 a.m. 6.0 ppb (6) 0.4 ppb (0) 5.3 ppb (5) 6.0 ppb (6) 4.2 ppb (4) 0.0 ppb (0) 26.0 ppb (20) 0.14 ppb (2) N/A 6.0 μg/m3 (25) 25.0
 
March 26, 2020, 4 a.m. 5.8 ppb (5) 0.4 ppb (0) 4.5 ppb (4) 5.0 ppb (5) 3.8 ppb (4) 0.0 ppb (0) 28.0 ppb (22) 0.13 ppb (1) N/A 6.0 μg/m3 (25) 25.0
 
March 26, 2020, 3 a.m. 2.7 ppb (3) 0.2 ppb (0) 1.6 ppb (1) 2.0 ppb (2) 1.2 ppb (1) 0.0 ppb (0) 31.0 ppb (24) 0.12 ppb (1) N/A 5.0 μg/m3 (21) 24.0
 
March 26, 2020, 2 a.m. 3.2 ppb (3) 0.4 ppb (0) 2.1 ppb (2) 3.0 ppb (3) 1.6 ppb (1) 0.0 ppb (0) 34.0 ppb (26) 0.11 ppb (1) N/A 6.0 μg/m3 (25) 26.0
 
March 26, 2020, 1 a.m. 1.9 ppb (2) 0.4 ppb (0) 0.6 ppb (1) 2.0 ppb (2) 0.3 ppb (0) 0.0 ppb (0) 38.0 ppb (29) 0.11 ppb (1) N/A 7.0 μg/m3 (29) 29.0
 
March 26, 2020, midnight 2.0 ppb (2) 0.5 ppb (0) 0.9 ppb (1) 1.0 ppb (1) 0.4 ppb (0) 0.0 ppb (0) 38.0 ppb (29) 0.11 ppb (1) N/A 2.0 μg/m3 (8) 29.0
 
March 25, 2020, 11 p.m. 2.8 ppb (3) 1.1 ppb (1) 1.2 ppb (1) 2.0 ppb (2) 0.5 ppb (0) 0.0 ppb (0) 39.0 ppb (30) 0.11 ppb (1) N/A 1.0 μg/m3 (4) 30.0
 
March 25, 2020, 10 p.m. 3.0 ppb (3) 1.1 ppb (1) 1.6 ppb (1) 2.0 ppb (2) 0.5 ppb (0) 0.0 ppb (0) 39.0 ppb (30) 0.11 ppb (1) N/A 2.0 μg/m3 (8) 30.0
 
March 25, 2020, 9 p.m. 2.8 ppb (3) 1.2 ppb (1) 1.4 ppb (1) 2.0 ppb (2) 0.4 ppb (0) 0.0 ppb (0) 39.0 ppb (30) 0.11 ppb (1) N/A 1.0 μg/m3 (4) 30.0
 
March 25, 2020, 8 p.m. 2.9 ppb (3) 1.2 ppb (1) 1.6 ppb (1) 2.0 ppb (2) 0.5 ppb (0) 0.0 ppb (0) 38.0 ppb (29) 0.11 ppb (1) N/A 1.0 μg/m3 (4) 29.0
 
March 25, 2020, 7 p.m. 3.4 ppb (3) 1.2 ppb (1) 2.1 ppb (2) 2.0 ppb (2) 0.9 ppb (1) 0.0 ppb (0) 37.0 ppb (28) 0.11 ppb (1) N/A 2.0 μg/m3 (8) 28.0
 
March 25, 2020, 6 p.m. 3.9 ppb (4) 1.2 ppb (1) 3.0 ppb (3) 3.0 ppb (3) 1.4 ppb (1) 0.0 ppb (0) 36.0 ppb (28) 0.12 ppb (1) N/A 2.0 μg/m3 (8) 28.0
 
March 25, 2020, 5 p.m. 5.6 ppb (5) 1.7 ppb (2) 4.0 ppb (4) 4.0 ppb (4) 2.3 ppb (2) 0.0 ppb (0) 34.0 ppb (26) 0.13 ppb (1) N/A 3.0 μg/m3 (12) 26.0
 
March 25, 2020, 4 p.m. 7.8 ppb (7) 1.8 ppb (2) 6.3 ppb (6) 6.0 ppb (6) 4.0 ppb (4) 0.0 ppb (0) 32.0 ppb (25) 0.13 ppb (1) N/A 6.0 μg/m3 (25) 25.0
 
March 25, 2020, 3 p.m. 12.6 ppb (12) 2.9 ppb (3) 10.4 ppb (10) 10.0 ppb (9) 7.1 ppb (7) 0.0 ppb (0) 26.0 ppb (20) 0.14 ppb (2) N/A 6.0 μg/m3 (25) 25.0
 
March 25, 2020, 2 p.m. 31.5 ppb (29) 10.6 ppb (10) 28.5 ppb (26) 21.0 ppb (19) 16.7 ppb (15) 0.0 ppb (0) 8.0 ppb (6) 0.21 ppb (2) N/A 6.0 μg/m3 (25) 29.0
 
March 25, 2020, 1 p.m. 35.9 ppb (33) 11.9 ppb (11) 33.3 ppb (31) 24.0 ppb (22) 19.4 ppb (18) 1.0 ppb (1) 4.0 ppb (3) 0.28 ppb (3) N/A 7.0 μg/m3 (29) 33.0
 
March 25, 2020, noon 28.6 ppb (26) 6.7 ppb (6) 29.0 ppb (27) 22.0 ppb (20) 18.6 ppb (17) 0.0 ppb (0) 4.0 ppb (3) 0.22 ppb (2) N/A 5.0 μg/m3 (21) 27.0
 
March 25, 2020, 11 a.m. 21.7 ppb (20) 1.8 ppb (2) 22.3 ppb (21) 20.0 ppb (19) 17.6 ppb (16) 0.0 ppb (0) 7.0 ppb (5) 0.17 ppb (2) N/A 5.0 μg/m3 (21) 21.0
 
March 25, 2020, 10 a.m. 10.4 ppb (10) 0.9 ppb (1) 8.4 ppb (8) 9.0 ppb (8) 7.0 ppb (6) 0.0 ppb (0) 16.0 ppb (12) 0.13 ppb (1) N/A 5.0 μg/m3 (21) 21.0
 
March 25, 2020, 9 a.m. 8.2 ppb (8) 0.7 ppb (1) 6.2 ppb (6) 7.0 ppb (6) 5.1 ppb (5) 0.0 ppb (0) 19.0 ppb (15) 0.13 ppb (1) N/A 4.0 μg/m3 (17) 17.0
 
March 25, 2020, 8 a.m. 8.4 ppb (8) 0.7 ppb (1) 6.7 ppb (6) 8.0 ppb (7) 5.6 ppb (5) 0.0 ppb (0) 19.0 ppb (15) 0.13 ppb (1) N/A 6.0 μg/m3 (25) 25.0
 
March 25, 2020, 7 a.m. 9.9 ppb (9) 0.5 ppb (0) 8.5 ppb (8) 9.0 ppb (8) 7.2 ppb (7) 0.0 ppb (0) 21.0 ppb (16) 0.15 ppb (2) N/A 3.0 μg/m3 (12) 16.0
 
March 25, 2020, 6 a.m. 13.5 ppb (12) 0.9 ppb (1) 10.9 ppb (10) 13.0 ppb (12) 9.3 ppb (9) 0.0 ppb (0) 21.0 ppb (16) 0.16 ppb (2) N/A 2.0 μg/m3 (8) 16.0
 
March 25, 2020, 5 a.m. 5.6 ppb (5) 0.5 ppb (0) 4.3 ppb (4) 5.0 ppb (5) 3.5 ppb (3) 0.0 ppb (0) 30.0 ppb (23) 0.14 ppb (2) N/A 3.0 μg/m3 (12) 23.0
 
March 25, 2020, 4 a.m. 7.8 ppb (7) 0.9 ppb (1) 6.2 ppb (6) 7.0 ppb (6) 5.0 ppb (5) 0.0 ppb (0) 28.0 ppb (22) 0.14 ppb (2) N/A 4.0 μg/m3 (17) 22.0
 
March 25, 2020, 3 a.m. 3.7 ppb (3) 0.3 ppb (0) 2.7 ppb (3) 3.0 ppb (3) 2.2 ppb (2) 0.0 ppb (0) 33.0 ppb (25) 0.14 ppb (2) N/A 3.0 μg/m3 (12) 25.0
 
March 25, 2020, 2 a.m. 2.5 ppb (2) 0.3 ppb (0) 1.1 ppb (1) 2.0 ppb (2) 0.8 ppb (1) 0.0 ppb (0) 36.0 ppb (28) 0.12 ppb (1) N/A 3.0 μg/m3 (12) 28.0
 
March 25, 2020, 1 a.m. 5.3 ppb (5) 0.9 ppb (1) 3.6 ppb (3) 4.0 ppb (4) 2.8 ppb (3) 0.0 ppb (0) 36.0 ppb (28) 0.15 ppb (2) N/A 4.0 μg/m3 (17) 28.0
 
March 25, 2020, midnight 5.2 ppb (5) 1.1 ppb (1) 3.9 ppb (4) 4.0 ppb (4) 2.7 ppb (3) 0.0 ppb (0) 37.0 ppb (28) 0.15 ppb (2) N/A 5.0 μg/m3 (21) 28.0
 
March 24, 2020, 11 p.m. 3.9 ppb (4) 1.0 ppb (1) 2.6 ppb (2) 3.0 ppb (3) 1.6 ppb (1) 0.0 ppb (0) 38.0 ppb (29) 0.14 ppb (2) N/A 5.0 μg/m3 (21) 29.0
 
March 24, 2020, 10 p.m. 3.4 ppb (3) 0.9 ppb (1) 2.1 ppb (2) 3.0 ppb (3) 1.1 ppb (1) 0.0 ppb (0) N/A 0.14 ppb (2) N/A 4.0 μg/m3 (17) 17.0
 
March 24, 2020, 9 p.m. 3.7 ppb (3) 0.7 ppb (1) 2.7 ppb (3) 3.0 ppb (3) 1.7 ppb (2) 0.0 ppb (0) N/A 0.14 ppb (2) N/A 4.0 μg/m3 (17) 17.0
 
March 24, 2020, 8 p.m. 3.3 ppb (3) 0.8 ppb (1) 2.5 ppb (2) 2.0 ppb (2) 1.3 ppb (1) 0.0 ppb (0) N/A 0.13 ppb (1) N/A 6.0 μg/m3 (25) 25.0
 
March 24, 2020, 7 p.m. 3.0 ppb (3) 0.8 ppb (1) 2.0 ppb (2) 2.0 ppb (2) 1.0 ppb (1) 0.0 ppb (0) N/A 0.13 ppb (1) N/A 5.0 μg/m3 (21) 21.0
 
March 24, 2020, 6 p.m. 3.7 ppb (3) 1.0 ppb (1) 2.4 ppb (2) 3.0 ppb (3) 1.4 ppb (1) 0.0 ppb (0) N/A 0.13 ppb (1) N/A 3.0 μg/m3 (12) 12.0
 
March 24, 2020, 5 p.m. 6.1 ppb (6) 1.2 ppb (1) 5.1 ppb (5) 5.0 ppb (5) 3.5 ppb (3) 0.0 ppb (0) N/A 0.14 ppb (2) N/A 3.0 μg/m3 (12) 12.0
 
March 24, 2020, 4 p.m. 9.4 ppb (9) 1.7 ppb (2) 8.2 ppb (8) 8.0 ppb (7) 5.7 ppb (5) 0.0 ppb (0) N/A 0.14 ppb (2) N/A 4.0 μg/m3 (17) 17.0
 
March 24, 2020, 3 p.m. 15.3 ppb (14) 2.4 ppb (2) 13.2 ppb (12) 13.0 ppb (12) 9.5 ppb (9) 0.0 ppb (0) N/A 0.17 ppb (2) N/A 5.0 μg/m3 (21) 21.0
 
March 24, 2020, 2 p.m. 14.3 ppb (13) 1.5 ppb (1) 13.0 ppb (12) 13.0 ppb (12) 10.3 ppb (10) 0.0 ppb (0) 24.0 ppb (18) 0.18 ppb (2) N/A 5.0 μg/m3 (21) 21.0
 
March 24, 2020, 1 p.m. 5.7 ppb (5) 0.5 ppb (0) 4.5 ppb (4) 5.0 ppb (5) 3.7 ppb (3) 0.0 ppb (0) 32.0 ppb (25) 0.13 ppb (1) N/A 5.0 μg/m3 (21) 25.0
 
March 24, 2020, noon 9.9 ppb (9) 0.4 ppb (0) 8.4 ppb (8) 9.0 ppb (8) 7.0 ppb (6) 0.0 ppb (0) 28.0 ppb (22) 0.15 ppb (2) N/A 6.0 μg/m3 (25) 25.0
 
March 24, 2020, 11 a.m. 6.7 ppb (6) 0.6 ppb (1) 5.8 ppb (5) 6.0 ppb (6) 4.7 ppb (4) 0.0 ppb (0) 26.0 ppb (20) 0.13 ppb (1) N/A 2.0 μg/m3 (8) 20.0
 
March 24, 2020, 10 a.m. 5.4 ppb (5) 0.6 ppb (1) 4.4 ppb (4) 5.0 ppb (5) 3.4 ppb (3) 0.0 ppb (0) 27.0 ppb (21) 0.12 ppb (1) N/A 2.0 μg/m3 (8) 21.0
 
March 24, 2020, 9 a.m. 6.7 ppb (6) 0.6 ppb (1) 4.9 ppb (5) 6.0 ppb (6) 4.1 ppb (4) 0.0 ppb (0) 29.0 ppb (22) 0.12 ppb (1) N/A 5.0 μg/m3 (21) 22.0
 
March 24, 2020, 8 a.m. 9.2 ppb (9) 0.4 ppb (0) 8.2 ppb (8) 9.0 ppb (8) 6.9 ppb (6) 0.0 ppb (0) 24.0 ppb (18) 0.14 ppb (2) N/A 6.0 μg/m3 (25) 25.0
 
March 24, 2020, 7 a.m. 7.0 ppb (6) 0.5 ppb (0) 5.3 ppb (5) 7.0 ppb (6) 4.2 ppb (4) 0.0 ppb (0) 27.0 ppb (21) 0.13 ppb (1) N/A 6.0 μg/m3 (25) 25.0
 
March 24, 2020, 6 a.m. 5.4 ppb (5) 0.3 ppb (0) 4.1 ppb (4) 5.0 ppb (5) 3.4 ppb (3) 0.0 ppb (0) 31.0 ppb (24) 0.14 ppb (2) N/A 6.0 μg/m3 (25) 25.0
 
March 24, 2020, 5 a.m. 5.9 ppb (5) 0.8 ppb (1) 3.9 ppb (4) 5.0 ppb (5) 3.2 ppb (3) 0.0 ppb (0) 30.0 ppb (23) 0.13 ppb (1) N/A 6.0 μg/m3 (25) 25.0
 
March 24, 2020, 4 a.m. 9.7 ppb (9) 0.4 ppb (0) 7.9 ppb (7) 9.0 ppb (8) 6.4 ppb (6) 0.0 ppb (0) 23.0 ppb (18) 0.16 ppb (2) N/A 6.0 μg/m3 (25) 25.0
 
March 24, 2020, 3 a.m. 12.8 ppb (12) 0.7 ppb (1) 10.2 ppb (9) 12.0 ppb (11) 8.5 ppb (8) 0.0 ppb (0) 24.0 ppb (18) 0.17 ppb (2) N/A 7.0 μg/m3 (29) 29.0
 
March 24, 2020, 2 a.m. 4.4 ppb (4) 0.5 ppb (0) 3.1 ppb (3) 4.0 ppb (4) 2.6 ppb (2) 0.0 ppb (0) 31.0 ppb (24) 0.14 ppb (2) N/A 8.0 μg/m3 (33) 33.0
 
March 24, 2020, 1 a.m. 4.6 ppb (4) 0.4 ppb (0) 3.3 ppb (3) 4.0 ppb (4) 2.7 ppb (3) 0.0 ppb (0) 34.0 ppb (26) 0.13 ppb (1) N/A 4.0 μg/m3 (17) 26.0
 
March 24, 2020, midnight 3.8 ppb (4) 0.7 ppb (1) 2.6 ppb (2) 3.0 ppb (3) 1.8 ppb (2) 0.0 ppb (0) 35.0 ppb (27) 0.13 ppb (1) N/A 6.0 μg/m3 (25) 27.0
 
March 23, 2020, 11 p.m. 5.6 ppb (5) 1.6 ppb (1) 4.1 ppb (4) 4.0 ppb (4) 2.5 ppb (2) 0.0 ppb (0) 35.0 ppb (27) 0.13 ppb (1) N/A 6.0 μg/m3 (25) 27.0
 
March 23, 2020, 10 p.m. 6.0 ppb (6) 1.1 ppb (1) 4.8 ppb (4) 5.0 ppb (5) 3.3 ppb (3) 0.0 ppb (0) 35.0 ppb (27) 0.13 ppb (1) N/A 5.0 μg/m3 (21) 27.0
 
March 23, 2020, 9 p.m. 4.5 ppb (4) 1.1 ppb (1) 3.2 ppb (3) 3.0 ppb (3) 2.0 ppb (2) 0.0 ppb (0) 36.0 ppb (28) 0.13 ppb (1) N/A 6.0 μg/m3 (25) 28.0
 
March 23, 2020, 8 p.m. 3.8 ppb (4) 0.7 ppb (1) 2.8 ppb (3) 3.0 ppb (3) 1.8 ppb (2) 0.0 ppb (0) 37.0 ppb (28) 0.13 ppb (1) N/A 6.0 μg/m3 (25) 28.0
 
March 23, 2020, 7 p.m. 2.6 ppb (2) 0.3 ppb (0) 1.9 ppb (2) 2.0 ppb (2) 1.2 ppb (1) 0.0 ppb (0) 35.0 ppb (27) 0.12 ppb (1) N/A 7.0 μg/m3 (29) 29.0
 
March 23, 2020, 6 p.m. 5.2 ppb (5) 1.4 ppb (1) 3.9 ppb (4) 4.0 ppb (4) 2.4 ppb (2) 0.0 ppb (0) 32.0 ppb (25) 0.12 ppb (1) N/A 5.0 μg/m3 (21) 25.0
 
March 23, 2020, 5 p.m. 7.0 ppb (6) 1.8 ppb (2) 5.7 ppb (5) 5.0 ppb (5) 3.6 ppb (3) 0.0 ppb (0) 31.0 ppb (24) 0.12 ppb (1) N/A 4.0 μg/m3 (17) 24.0
 
March 23, 2020, 4 p.m. 6.7 ppb (6) 2.4 ppb (2) 4.9 ppb (5) 4.0 ppb (4) 2.7 ppb (3) 0.0 ppb (0) 31.0 ppb (24) 0.12 ppb (1) N/A 4.0 μg/m3 (17) 24.0
 
March 23, 2020, 3 p.m. 9.6 ppb (9) 2.3 ppb (2) 8.1 ppb (8) 7.0 ppb (6) 5.2 ppb (5) 0.0 ppb (0) 27.0 ppb (21) 0.13 ppb (1) N/A 5.0 μg/m3 (21) 21.0
 
March 23, 2020, 2 p.m. 10.5 ppb (10) 2.2 ppb (2) 8.7 ppb (8) 8.0 ppb (7) 6.1 ppb (6) 0.0 ppb (0) 27.0 ppb (21) 0.14 ppb (2) N/A 5.0 μg/m3 (21) 21.0
 
March 23, 2020, 1 p.m. 8.9 ppb (8) 1.5 ppb (1) 7.5 ppb (7) 7.0 ppb (6) 5.5 ppb (5) 0.0 ppb (0) 28.0 ppb (22) 0.15 ppb (2) N/A 3.0 μg/m3 (12) 22.0
 
March 23, 2020, noon 7.3 ppb (7) 1.2 ppb (1) 5.6 ppb (5) 6.0 ppb (6) 4.2 ppb (4) 0.0 ppb (0) 29.0 ppb (22) 0.14 ppb (2) N/A 3.0 μg/m3 (12) 22.0
 
March 23, 2020, 11 a.m. 4.6 ppb (4) 0.8 ppb (1) 3.0 ppb (3) 4.0 ppb (4) 2.3 ppb (2) 0.0 ppb (0) 33.0 ppb (25) 0.12 ppb (1) N/A 3.0 μg/m3 (12) 25.0
 
March 23, 2020, 10 a.m. 3.3 ppb (3) 0.6 ppb (1) 2.0 ppb (2) 3.0 ppb (3) 1.5 ppb (1) 0.0 ppb (0) 34.0 ppb (26) 0.11 ppb (1) N/A 3.0 μg/m3 (12) 26.0
 
March 23, 2020, 9 a.m. 2.6 ppb (2) 0.3 ppb (0) 1.5 ppb (1) 2.0 ppb (2) 1.0 ppb (1) 0.0 ppb (0) 35.0 ppb (27) 0.11 ppb (1) N/A 4.0 μg/m3 (17) 27.0
 
March 23, 2020, 8 a.m. 2.6 ppb (2) 0.3 ppb (0) 1.4 ppb (1) 2.0 ppb (2) 1.0 ppb (1) 0.0 ppb (0) 34.0 ppb (26) 0.11 ppb (1) N/A 6.0 μg/m3 (25) 26.0
 
March 23, 2020, 7 a.m. 5.8 ppb (5) 0.6 ppb (1) 3.4 ppb (3) 5.0 ppb (5) 2.7 ppb (3) 0.0 ppb (0) 26.0 ppb (20) 0.13 ppb (1) N/A 7.0 μg/m3 (29) 29.0
 
March 23, 2020, 6 a.m. 5.1 ppb (5) 0.8 ppb (1) 3.1 ppb (3) 4.0 ppb (4) 2.4 ppb (2) 0.0 ppb (0) 28.0 ppb (22) 0.14 ppb (2) N/A 6.0 μg/m3 (25) 25.0
 
March 23, 2020, 5 a.m. 5.7 ppb (5) 0.8 ppb (1) 4.0 ppb (4) 5.0 ppb (5) 3.2 ppb (3) 0.0 ppb (0) 30.0 ppb (23) 0.14 ppb (2) N/A 3.0 μg/m3 (12) 23.0
 
March 23, 2020, 4 a.m. 15.5 ppb (14) 0.9 ppb (1) 12.0 ppb (11) 15.0 ppb (14) 10.1 ppb (9) 0.0 ppb (0) 24.0 ppb (18) 0.24 ppb (3) N/A 7.0 μg/m3 (29) 29.0
 
March 23, 2020, 3 a.m. 30.4 ppb (28) 2.4 ppb (2) 29.8 ppb (28) 28.0 ppb (26) 24.0 ppb (22) 1.0 ppb (1) 11.0 ppb (8) 0.34 ppb (4) N/A 13.0 μg/m3 (52) 52.0
 
March 23, 2020, 2 a.m. 5.1 ppb (5) 0.2 ppb (0) 5.3 ppb (5) 5.0 ppb (5) 4.5 ppb (4) 0.0 ppb (0) 34.0 ppb (26) 0.15 ppb (2) N/A 4.0 μg/m3 (17) 26.0
 
March 23, 2020, 1 a.m. 2.2 ppb (2) 0.5 ppb (0) 0.7 ppb (1) 2.0 ppb (2) 0.5 ppb (0) 0.0 ppb (0) 41.0 ppb (32) 0.12 ppb (1) N/A 5.0 μg/m3 (21) 32.0
 
March 23, 2020, midnight 1.5 ppb (1) 0.3 ppb (0) 0.4 ppb (0) 1.0 ppb (1) 0.1 ppb (0) 0.0 ppb (0) 43.0 ppb (33) 0.12 ppb (1) N/A 6.0 μg/m3 (25) 33.0
 
March 22, 2020, 11 p.m. 1.7 ppb (2) 0.3 ppb (0) 0.4 ppb (0) 1.0 ppb (1) 0.1 ppb (0) 0.0 ppb (0) 44.0 ppb (34) 0.11 ppb (1) N/A 6.0 μg/m3 (25) 34.0
 
March 22, 2020, 10 p.m. 1.9 ppb (2) 0.6 ppb (1) 0.4 ppb (0) 1.0 ppb (1) 0.1 ppb (0) 0.0 ppb (0) 44.0 ppb (34) 0.11 ppb (1) N/A 5.0 μg/m3 (21) 34.0
 
March 22, 2020, 9 p.m. 1.8 ppb (2) 0.2 ppb (0) 0.7 ppb (1) 2.0 ppb (2) 0.3 ppb (0) 0.0 ppb (0) 45.0 ppb (35) 0.11 ppb (1) N/A 4.0 μg/m3 (17) 35.0
 
March 22, 2020, 8 p.m. 2.3 ppb (2) 0.7 ppb (1) 1.2 ppb (1) 2.0 ppb (2) 0.6 ppb (1) 0.0 ppb (0) 45.0 ppb (35) 0.12 ppb (1) N/A 6.0 μg/m3 (25) 35.0
 
March 22, 2020, 7 p.m. 2.8 ppb (3) 0.7 ppb (1) 2.0 ppb (2) 2.0 ppb (2) 1.1 ppb (1) 0.0 ppb (0) 43.0 ppb (33) 0.12 ppb (1) N/A 8.0 μg/m3 (33) 33.0
 
March 22, 2020, 6 p.m. 5.0 ppb (5) 1.7 ppb (2) 3.8 ppb (4) 3.0 ppb (3) 2.3 ppb (2) 0.0 ppb (0) 38.0 ppb (29) 0.13 ppb (1) N/A 7.0 μg/m3 (29) 29.0
 
March 22, 2020, 5 p.m. 8.6 ppb (8) 2.9 ppb (3) 8.0 ppb (7) 6.0 ppb (6) 4.6 ppb (4) 0.0 ppb (0) 32.0 ppb (25) 0.15 ppb (2) N/A 9.0 μg/m3 (38) 38.0
 
March 22, 2020, 4 p.m. 11.5 ppb (11) 4.1 ppb (4) 10.5 ppb (10) 7.0 ppb (6) 5.9 ppb (5) 0.0 ppb (0) 26.0 ppb (20) 0.16 ppb (2) N/A 8.0 μg/m3 (33) 33.0
 
March 22, 2020, 3 p.m. 20.8 ppb (19) 8.3 ppb (8) 20.3 ppb (19) 13.0 ppb (12) 10.7 ppb (10) 0.0 ppb (0) 16.0 ppb (12) 0.2 ppb (2) N/A 11.0 μg/m3 (46) 46.0
 
March 22, 2020, 2 p.m. 30.0 ppb (28) 10.0 ppb (9) 27.5 ppb (25) 20.0 ppb (19) 16.6 ppb (15) 0.0 ppb (0) 7.0 ppb (5) 0.25 ppb (3) N/A 14.0 μg/m3 (54) 54.0
 
March 22, 2020, 1 p.m. 29.8 ppb (28) 6.5 ppb (6) 28.1 ppb (26) 23.0 ppb (21) 19.8 ppb (18) 0.0 ppb (0) 2.0 ppb (2) 0.24 ppb (3) N/A 12.0 μg/m3 (50) 50.0
 
March 22, 2020, noon 27.2 ppb (25) 6.1 ppb (6) 24.1 ppb (22) 21.0 ppb (19) 17.2 ppb (16) 0.0 ppb (0) 4.0 ppb (3) 0.23 ppb (3) N/A 13.0 μg/m3 (52) 52.0
 
March 22, 2020, 11 a.m. 18.2 ppb (17) 1.9 ppb (2) 17.4 ppb (16) 16.0 ppb (15) 13.9 ppb (13) 0.0 ppb (0) 6.0 ppb (5) 0.22 ppb (2) N/A 11.0 μg/m3 (46) 46.0
 
March 22, 2020, 10 a.m. 13.0 ppb (12) 0.8 ppb (1) 11.5 ppb (11) 12.0 ppb (11) 9.7 ppb (9) 0.0 ppb (0) 11.0 ppb (8) 0.16 ppb (2) N/A 8.0 μg/m3 (33) 33.0
 
March 22, 2020, 9 a.m. 10.1 ppb (9) 0.9 ppb (1) 7.8 ppb (7) 9.0 ppb (8) 6.3 ppb (6) 0.0 ppb (0) 18.0 ppb (14) 0.16 ppb (2) N/A 9.0 μg/m3 (38) 38.0
 
March 22, 2020, 8 a.m. 21.2 ppb (20) 5.0 ppb (5) 12.8 ppb (12) 16.0 ppb (15) 10.6 ppb (10) 0.0 ppb (0) 15.0 ppb (12) 0.21 ppb (2) N/A 14.0 μg/m3 (54) 54.0
 
March 22, 2020, 7 a.m. 15.7 ppb (15) 0.6 ppb (1) 15.9 ppb (15) 15.0 ppb (14) 13.3 ppb (12) 0.0 ppb (0) 15.0 ppb (12) 0.24 ppb (3) N/A 8.0 μg/m3 (33) 33.0
 
March 22, 2020, 6 a.m. 17.8 ppb (16) 0.7 ppb (1) 16.6 ppb (15) 17.0 ppb (16) 14.2 ppb (13) 0.0 ppb (0) 15.0 ppb (12) 0.31 ppb (3) N/A 17.0 μg/m3 (61) 61.0
 
March 22, 2020, 5 a.m. 25.1 ppb (23) 3.1 ppb (3) 20.2 ppb (19) 22.0 ppb (20) 16.4 ppb (15) 0.0 ppb (0) 11.0 ppb (8) 0.52 ppb (6) N/A 28.0 μg/m3 (84) 84.0
 
March 22, 2020, 4 a.m. 23.3 ppb (22) 1.4 ppb (1) 18.4 ppb (17) 22.0 ppb (20) 15.6 ppb (14) 0.0 ppb (0) 19.0 ppb (15) 0.38 ppb (4) N/A 23.0 μg/m3 (73) 73.0