ID: 1511

AQSQID: 380150003

Site Name: Bismarck Residential

Added: April 21, 2020, 6:24 p.m.

Updated: Jan. 28, 2021, 6:31 a.m.

Location: Bismarck (Bismarck Cathedral Area Historic Dist), ND

Reporting: True, Located: True

Current AQI: 26.0

Bismarck (Bismarck Cathedral Area Historic Dist) ND, US: 46.8253, -100.7681

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
Jan. 28, 2021, 4 a.m. 4.1 ppb (4) 0.3 ppb (1) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 20.0 ppb (19) 0.15 ppb (2) 11.9 μg/m3 (12) 6.2 μg/m3 (26) 26.0
 
Jan. 28, 2021, 3 a.m. 3.6 ppb (4) 0.2 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 20.0 ppb (19) N/A 11.7 μg/m3 (11) 6.0 μg/m3 (25) 25.0
 
Jan. 28, 2021, 2 a.m. 3.9 ppb (4) 0.4 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 21.0 ppb (20) N/A 13.8 μg/m3 (13) 6.2 μg/m3 (26) 26.0
 
Jan. 28, 2021, 1 a.m. 3.8 ppb (4) 0.3 ppb (1) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 21.0 ppb (20) 0.15 ppb (2) 11.4 μg/m3 (11) 5.4 μg/m3 (23) 23.0
 
Jan. 28, 2021, midnight 4.6 ppb (5) 0.5 ppb (1) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 23.0 ppb (22) 0.16 ppb (3) 10.8 μg/m3 (10) 5.3 μg/m3 (23) 23.0
 
Jan. 27, 2021, 11 p.m. 5.1 ppb (5) 0.7 ppb (1) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 24.0 ppb (23) 0.17 ppb (3) 9.4 μg/m3 (9) 5.3 μg/m3 (23) 23.0
 
Jan. 27, 2021, 10 p.m. 5.1 ppb (5) 1.2 ppb (2) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 24.0 ppb (23) 0.17 ppb (3) 9.8 μg/m3 (10) 4.7 μg/m3 (20) 23.0
 
Jan. 27, 2021, 9 p.m. 5.1 ppb (5) 1.7 ppb (2) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 25.0 ppb (24) 0.15 ppb (2) 9.5 μg/m3 (9) 3.9 μg/m3 (17) 24.0
 
Jan. 27, 2021, 8 p.m. 3.5 ppb (4) 1.3 ppb (2) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 25.0 ppb (24) 0.15 ppb (2) 7.0 μg/m3 (7) 3.5 μg/m3 (15) 24.0
 
Jan. 27, 2021, 7 p.m. 3.3 ppb (4) 1.4 ppb (2) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 24.0 ppb (23) 0.15 ppb (2) 8.3 μg/m3 (8) 3.2 μg/m3 (14) 23.0
 
Jan. 27, 2021, 6 p.m. 2.9 ppb (3) 1.1 ppb (2) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 24.0 ppb (23) 0.14 ppb (2) 9.1 μg/m3 (9) 3.1 μg/m3 (13) 23.0
 
Jan. 27, 2021, 5 p.m. 2.9 ppb (3) 1.1 ppb (2) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 23.0 ppb (22) 0.14 ppb (2) 7.1 μg/m3 (7) 2.5 μg/m3 (11) 22.0
 
Jan. 27, 2021, 4 p.m. 2.6 ppb (3) 0.8 ppb (1) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 23.0 ppb (22) 0.14 ppb (2) 6.0 μg/m3 (6) 2.0 μg/m3 (9) 22.0
 
Jan. 27, 2021, 3 p.m. 2.7 ppb (3) 0.6 ppb (1) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 23.0 ppb (22) 0.15 ppb (2) 6.0 μg/m3 (6) 2.1 μg/m3 (9) 22.0
 
Jan. 27, 2021, 2 p.m. 3.5 ppb (4) 0.5 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 23.0 ppb (22) 0.15 ppb (2) 3.8 μg/m3 (4) 2.1 μg/m3 (9) 22.0
 
Jan. 27, 2021, 1 p.m. 2.7 ppb (3) 0.4 ppb (1) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 24.0 ppb (23) 0.15 ppb (2) 3.8 μg/m3 (4) 1.5 μg/m3 (7) 23.0
 
Jan. 27, 2021, noon 2.0 ppb (2) 0.2 ppb (1) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 24.0 ppb (23) 0.14 ppb (2) 3.1 μg/m3 (3) 1.4 μg/m3 (6) 23.0
 
Jan. 27, 2021, 11 a.m. 2.0 ppb (2) 0.2 ppb (1) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 24.0 ppb (23) 0.13 ppb (2) 3.6 μg/m3 (4) 1.6 μg/m3 (7) 23.0
 
Jan. 27, 2021, 10 a.m. 2.4 ppb (3) 0.2 ppb (1) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 23.0 ppb (22) 0.14 ppb (2) 3.1 μg/m3 (3) 1.8 μg/m3 (8) 22.0
 
Jan. 27, 2021, 9 a.m. 2.1 ppb (2) 0.1 ppb (1) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 25.0 ppb (24) 0.13 ppb (2) 4.6 μg/m3 (5) 1.7 μg/m3 (8) 24.0
 
Jan. 27, 2021, 8 a.m. 2.1 ppb (2) 0.2 ppb (1) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 25.0 ppb (24) 0.13 ppb (2) 7.1 μg/m3 (7) 1.6 μg/m3 (7) 24.0
 
Jan. 27, 2021, 7 a.m. 2.6 ppb (3) 0.2 ppb (1) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 25.0 ppb (24) 0.13 ppb (2) 6.3 μg/m3 (6) 1.5 μg/m3 (7) 24.0
 
Jan. 27, 2021, 6 a.m. 3.5 ppb (4) 0.2 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 25.0 ppb (24) 0.13 ppb (2) 5.9 μg/m3 (6) 1.4 μg/m3 (6) 24.0
 
Jan. 27, 2021, 5 a.m. 3.1 ppb (3) 0.2 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 27.0 ppb (25) 0.13 ppb (2) 8.1 μg/m3 (8) 1.3 μg/m3 (6) 25.0
 
Jan. 27, 2021, 4 a.m. 2.7 ppb (3) 0.2 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 28.0 ppb (26) 0.13 ppb (2) 8.3 μg/m3 (8) 1.5 μg/m3 (7) 26.0
 
Jan. 27, 2021, 3 a.m. 3.7 ppb (4) 0.2 ppb (1) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 28.0 ppb (26) N/A 5.9 μg/m3 (6) 1.3 μg/m3 (6) 26.0
 
Jan. 27, 2021, 2 a.m. 2.9 ppb (3) 0.1 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 29.0 ppb (27) N/A 6.3 μg/m3 (6) 1.5 μg/m3 (7) 27.0
 
Jan. 27, 2021, 1 a.m. 3.3 ppb (4) 0.2 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 28.0 ppb (26) 0.13 ppb (2) 5.2 μg/m3 (5) 1.4 μg/m3 (6) 26.0
 
Jan. 27, 2021, midnight 3.7 ppb (4) 0.2 ppb (1) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 27.0 ppb (25) 0.13 ppb (2) 7.3 μg/m3 (7) 1.8 μg/m3 (8) 25.0
 
Jan. 26, 2021, 11 p.m. 4.7 ppb (5) 0.3 ppb (1) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 26.0 ppb (25) 0.14 ppb (2) 7.1 μg/m3 (7) 2.9 μg/m3 (13) 25.0
 
Jan. 26, 2021, 10 p.m. 3.2 ppb (4) 0.6 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 29.0 ppb (27) 0.14 ppb (2) 6.2 μg/m3 (6) 2.2 μg/m3 (10) 27.0
 
Jan. 26, 2021, 9 p.m. 2.7 ppb (3) 0.7 ppb (1) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 29.0 ppb (27) 0.14 ppb (2) 5.0 μg/m3 (5) 2.0 μg/m3 (9) 27.0
 
Jan. 26, 2021, 8 p.m. 2.3 ppb (3) 0.7 ppb (1) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 29.0 ppb (27) 0.13 ppb (2) 5.8 μg/m3 (6) 2.0 μg/m3 (9) 27.0
 
Jan. 26, 2021, 7 p.m. 2.3 ppb (3) 0.7 ppb (1) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 29.0 ppb (27) 0.14 ppb (2) 7.9 μg/m3 (8) 2.0 μg/m3 (9) 27.0
 
Jan. 26, 2021, 6 p.m. 2.6 ppb (3) 0.9 ppb (1) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 28.0 ppb (26) 0.15 ppb (2) 7.5 μg/m3 (7) 2.0 μg/m3 (9) 26.0
 
Jan. 26, 2021, 5 p.m. 3.0 ppb (3) 0.9 ppb (1) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 28.0 ppb (26) 0.16 ppb (3) 9.2 μg/m3 (9) 2.1 μg/m3 (9) 26.0
 
Jan. 26, 2021, 4 p.m. 3.0 ppb (3) 0.7 ppb (1) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 28.0 ppb (26) 0.14 ppb (2) 6.6 μg/m3 (7) 1.9 μg/m3 (8) 26.0
 
Jan. 26, 2021, 3 p.m. 4.0 ppb (4) 0.7 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 27.0 ppb (25) 0.15 ppb (2) 6.7 μg/m3 (7) 1.8 μg/m3 (8) 25.0
 
Jan. 26, 2021, 2 p.m. 4.8 ppb (5) 0.5 ppb (1) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 26.0 ppb (25) 0.18 ppb (3) 5.0 μg/m3 (5) 1.8 μg/m3 (8) 25.0
 
Jan. 26, 2021, 1 p.m. 5.0 ppb (5) 0.4 ppb (1) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 25.0 ppb (24) 0.21 ppb (3) 5.7 μg/m3 (6) 2.4 μg/m3 (10) 24.0
 
Jan. 26, 2021, noon 4.7 ppb (5) 0.3 ppb (1) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 25.0 ppb (24) 0.21 ppb (3) 6.4 μg/m3 (6) 3.1 μg/m3 (13) 24.0
 
Jan. 26, 2021, 11 a.m. 5.0 ppb (5) 1.6 ppb (2) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 25.0 ppb (24) 0.18 ppb (3) 8.0 μg/m3 (8) 3.3 μg/m3 (14) 24.0
 
Jan. 26, 2021, 10 a.m. 2.6 ppb (3) 0.2 ppb (1) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 26.0 ppb (25) 0.16 ppb (3) 7.1 μg/m3 (7) 2.6 μg/m3 (11) 25.0
 
Jan. 26, 2021, 9 a.m. 2.3 ppb (3) 0.2 ppb (1) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 27.0 ppb (25) 0.16 ppb (3) 6.7 μg/m3 (7) 3.0 μg/m3 (13) 25.0
 
Jan. 26, 2021, 8 a.m. 2.4 ppb (3) 0.2 ppb (1) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 27.0 ppb (25) 0.16 ppb (3) 6.9 μg/m3 (7) 2.8 μg/m3 (12) 25.0
 
Jan. 26, 2021, 7 a.m. 2.2 ppb (3) 0.2 ppb (1) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 28.0 ppb (26) 0.15 ppb (2) 4.5 μg/m3 (5) 2.0 μg/m3 (9) 26.0
 
Jan. 26, 2021, 6 a.m. 2.4 ppb (3) 0.2 ppb (1) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 27.0 ppb (25) 0.15 ppb (2) 4.8 μg/m3 (5) 1.7 μg/m3 (8) 25.0
 
Jan. 26, 2021, 5 a.m. 2.8 ppb (3) 0.2 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 27.0 ppb (25) 0.16 ppb (3) 6.9 μg/m3 (7) 2.7 μg/m3 (12) 25.0
 
Jan. 26, 2021, 4 a.m. 2.9 ppb (3) 0.2 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 27.0 ppb (25) 0.15 ppb (2) 8.1 μg/m3 (8) 3.3 μg/m3 (14) 25.0
 
Jan. 26, 2021, 3 a.m. 2.9 ppb (3) 0.3 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 26.0 ppb (25) N/A 7.6 μg/m3 (8) 3.3 μg/m3 (14) 25.0
 
Jan. 26, 2021, 2 a.m. 3.3 ppb (4) 0.3 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 26.0 ppb (25) N/A 7.6 μg/m3 (8) 3.2 μg/m3 (14) 25.0
 
Jan. 26, 2021, 1 a.m. 2.7 ppb (3) 0.3 ppb (1) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 25.0 ppb (24) 0.17 ppb (3) 7.8 μg/m3 (8) 3.9 μg/m3 (17) 24.0
 
Jan. 26, 2021, midnight 4.0 ppb (4) 0.4 ppb (1) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 24.0 ppb (23) 0.19 ppb (3) 10.1 μg/m3 (10) 4.1 μg/m3 (18) 23.0
 
Jan. 25, 2021, 11 p.m. 4.0 ppb (4) 0.5 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 24.0 ppb (23) 0.19 ppb (3) 9.9 μg/m3 (10) 4.1 μg/m3 (18) 23.0
 
Jan. 25, 2021, 10 p.m. 4.7 ppb (5) 0.8 ppb (1) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 23.0 ppb (22) 0.18 ppb (3) 12.5 μg/m3 (12) 4.8 μg/m3 (20) 22.0
 
Jan. 25, 2021, 9 p.m. 3.7 ppb (4) 0.7 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 25.0 ppb (24) 0.16 ppb (3) 12.5 μg/m3 (12) 6.2 μg/m3 (26) 26.0
 
Jan. 25, 2021, 8 p.m. 3.1 ppb (3) 0.8 ppb (1) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 25.0 ppb (24) 0.15 ppb (2) 11.4 μg/m3 (11) 5.7 μg/m3 (24) 24.0
 
Jan. 25, 2021, 7 p.m. 3.4 ppb (4) 0.9 ppb (1) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 25.0 ppb (24) 0.15 ppb (2) 10.9 μg/m3 (11) 5.4 μg/m3 (23) 24.0
 
Jan. 25, 2021, 6 p.m. 3.8 ppb (4) 1.1 ppb (2) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 24.0 ppb (23) 0.15 ppb (2) 10.3 μg/m3 (10) 4.9 μg/m3 (21) 23.0
 
Jan. 25, 2021, 5 p.m. 4.8 ppb (5) 1.2 ppb (2) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 22.0 ppb (21) 0.15 ppb (2) 11.9 μg/m3 (12) 4.7 μg/m3 (20) 21.0
 
Jan. 25, 2021, 4 p.m. 4.2 ppb (4) 0.8 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 22.0 ppb (21) 0.15 ppb (2) 11.4 μg/m3 (11) 4.4 μg/m3 (19) 21.0
 
Jan. 25, 2021, 3 p.m. 4.5 ppb (5) 0.5 ppb (1) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 23.0 ppb (22) 0.15 ppb (2) 10.6 μg/m3 (10) 4.2 μg/m3 (18) 22.0
 
Jan. 25, 2021, 2 p.m. 5.8 ppb (6) 0.4 ppb (1) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 22.0 ppb (21) 0.15 ppb (2) 11.2 μg/m3 (11) 4.3 μg/m3 (18) 21.0
 
Jan. 25, 2021, 1 p.m. 5.1 ppb (5) 0.3 ppb (1) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 22.0 ppb (21) 0.16 ppb (3) 11.6 μg/m3 (11) 4.5 μg/m3 (19) 21.0
 
Jan. 25, 2021, noon 3.9 ppb (4) 0.2 ppb (1) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 23.0 ppb (22) 0.15 ppb (2) 12.0 μg/m3 (12) 4.1 μg/m3 (18) 22.0
 
Jan. 25, 2021, 11 a.m. 2.6 ppb (3) 0.2 ppb (1) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 25.0 ppb (24) 0.14 ppb (2) 11.1 μg/m3 (11) 4.4 μg/m3 (19) 24.0
 
Jan. 25, 2021, 10 a.m. 2.7 ppb (3) 0.2 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 24.0 ppb (23) 0.13 ppb (2) 12.6 μg/m3 (12) 4.7 μg/m3 (20) 23.0
 
Jan. 25, 2021, 9 a.m. 2.8 ppb (3) 0.2 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 24.0 ppb (23) 0.13 ppb (2) 10.5 μg/m3 (10) 4.4 μg/m3 (19) 23.0
 
Jan. 25, 2021, 8 a.m. 1.9 ppb (2) 0.1 ppb (1) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 25.0 ppb (24) 0.13 ppb (2) 8.9 μg/m3 (9) 4.2 μg/m3 (18) 24.0
 
Jan. 25, 2021, 7 a.m. 2.1 ppb (2) 0.3 ppb (1) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 26.0 ppb (25) 0.14 ppb (2) 9.1 μg/m3 (9) 4.5 μg/m3 (19) 25.0
 
Jan. 25, 2021, 6 a.m. 1.9 ppb (2) 0.3 ppb (1) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 27.0 ppb (25) 0.14 ppb (2) 9.0 μg/m3 (9) 4.4 μg/m3 (19) 25.0
 
Jan. 25, 2021, 5 a.m. 2.0 ppb (2) 0.3 ppb (1) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 28.0 ppb (26) 0.14 ppb (2) 9.2 μg/m3 (9) 4.1 μg/m3 (18) 26.0
 
Jan. 25, 2021, 4 a.m. 1.9 ppb (2) 0.3 ppb (1) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 29.0 ppb (27) 0.14 ppb (2) 9.8 μg/m3 (10) 3.9 μg/m3 (17) 27.0
 
Jan. 25, 2021, 3 a.m. 2.0 ppb (2) 0.2 ppb (1) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 29.0 ppb (27) N/A 10.9 μg/m3 (11) 4.0 μg/m3 (17) 27.0
 
Jan. 25, 2021, 2 a.m. 2.1 ppb (2) 0.2 ppb (1) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 29.0 ppb (27) N/A 15.7 μg/m3 (15) 4.1 μg/m3 (18) 27.0
 
Jan. 25, 2021, 1 a.m. 1.9 ppb (2) 0.2 ppb (1) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 30.0 ppb (28) 0.15 ppb (2) 27.4 μg/m3 (26) 4.4 μg/m3 (19) 28.0
 
Jan. 25, 2021, midnight 2.4 ppb (3) 0.2 ppb (1) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 29.0 ppb (27) 0.15 ppb (2) 12.1 μg/m3 (12) 4.5 μg/m3 (19) 27.0
 
Jan. 24, 2021, 11 p.m. 2.3 ppb (3) 0.3 ppb (1) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 28.0 ppb (26) 0.16 ppb (3) 12.9 μg/m3 (12) 4.9 μg/m3 (21) 26.0
 
Jan. 24, 2021, 10 p.m. 2.4 ppb (3) 0.3 ppb (1) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 26.0 ppb (25) 0.15 ppb (2) 14.8 μg/m3 (14) 6.4 μg/m3 (27) 27.0
 
Jan. 24, 2021, 9 p.m. 2.6 ppb (3) 0.5 ppb (1) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 26.0 ppb (25) 0.16 ppb (3) 12.1 μg/m3 (12) 6.7 μg/m3 (28) 28.0
 
Jan. 24, 2021, 8 p.m. 2.5 ppb (3) 0.5 ppb (1) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 28.0 ppb (26) 0.15 ppb (2) 11.2 μg/m3 (11) 5.2 μg/m3 (22) 26.0
 
Jan. 24, 2021, 7 p.m. 1.9 ppb (2) 0.4 ppb (1) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 30.0 ppb (28) 0.14 ppb (2) 9.3 μg/m3 (9) 3.5 μg/m3 (15) 28.0
 
Jan. 24, 2021, 6 p.m. 1.8 ppb (2) 0.5 ppb (1) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 30.0 ppb (28) 0.15 ppb (2) 7.5 μg/m3 (7) 3.1 μg/m3 (13) 28.0
 
Jan. 24, 2021, 5 p.m. 1.8 ppb (2) 0.5 ppb (1) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 30.0 ppb (28) 0.15 ppb (2) 7.9 μg/m3 (8) 2.8 μg/m3 (12) 28.0
 
Jan. 24, 2021, 4 p.m. 2.6 ppb (3) 0.7 ppb (1) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 27.0 ppb (25) 0.15 ppb (2) 7.2 μg/m3 (7) 3.3 μg/m3 (14) 25.0
 
Jan. 24, 2021, 3 p.m. 3.2 ppb (4) 0.5 ppb (1) N/A 3.0 ppb (3) N/A 1.0 ppb (2) 26.0 ppb (25) 0.16 ppb (3) 6.8 μg/m3 (7) 3.6 μg/m3 (16) 25.0
 
Jan. 24, 2021, 2 p.m. 5.5 ppb (6) 0.3 ppb (1) N/A 5.0 ppb (5) N/A 1.0 ppb (2) 24.0 ppb (23) 0.16 ppb (3) 7.3 μg/m3 (7) 3.8 μg/m3 (16) 23.0
 
Jan. 24, 2021, 1 p.m. 5.1 ppb (5) 0.2 ppb (1) N/A 5.0 ppb (5) N/A 1.0 ppb (2) 24.0 ppb (23) 0.16 ppb (3) 7.9 μg/m3 (8) 3.9 μg/m3 (17) 23.0
 
Jan. 24, 2021, noon 7.7 ppb (8) 0.3 ppb (1) N/A 7.0 ppb (7) N/A 1.0 ppb (2) 21.0 ppb (20) 0.25 ppb (3) 8.3 μg/m3 (8) 4.2 μg/m3 (18) 20.0
 
Jan. 24, 2021, 11 a.m. 4.4 ppb (5) 0.4 ppb (1) N/A 4.0 ppb (4) N/A 1.0 ppb (2) 27.0 ppb (25) 0.16 ppb (3) 6.9 μg/m3 (7) 3.6 μg/m3 (16) 25.0
 
Jan. 24, 2021, 10 a.m. 5.9 ppb (6) 0.4 ppb (1) N/A 6.0 ppb (6) N/A 1.0 ppb (2) 25.0 ppb (24) 0.19 ppb (3) 7.2 μg/m3 (7) 3.9 μg/m3 (17) 24.0
 
Jan. 24, 2021, 9 a.m. 6.6 ppb (7) 0.2 ppb (1) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 24.0 ppb (23) 0.21 ppb (3) 8.6 μg/m3 (8) 4.1 μg/m3 (18) 23.0
 
Jan. 24, 2021, 8 a.m. 3.9 ppb (4) 0.2 ppb (1) N/A 4.0 ppb (4) N/A 1.0 ppb (2) 26.0 ppb (25) 0.15 ppb (2) 8.5 μg/m3 (8) 4.2 μg/m3 (18) 25.0
 
Jan. 24, 2021, 7 a.m. 4.0 ppb (4) 0.5 ppb (1) N/A 3.0 ppb (3) N/A 1.0 ppb (2) 28.0 ppb (26) 0.14 ppb (2) 9.8 μg/m3 (10) 4.2 μg/m3 (18) 26.0
 
Jan. 24, 2021, 6 a.m. 4.9 ppb (5) 0.4 ppb (1) N/A 4.0 ppb (4) N/A 1.0 ppb (2) 22.0 ppb (21) 0.15 ppb (2) 13.4 μg/m3 (13) 7.3 μg/m3 (31) 31.0
 
Jan. 24, 2021, 5 a.m. 4.8 ppb (5) 0.6 ppb (1) N/A 4.0 ppb (4) N/A 1.0 ppb (2) 23.0 ppb (22) 0.16 ppb (3) 11.5 μg/m3 (11) 7.8 μg/m3 (33) 33.0
 
Jan. 24, 2021, 4 a.m. 4.4 ppb (5) 0.5 ppb (1) N/A 4.0 ppb (4) N/A 1.0 ppb (2) 24.0 ppb (23) 0.16 ppb (3) 13.7 μg/m3 (13) 8.6 μg/m3 (36) 36.0
 
Jan. 24, 2021, 3 a.m. 4.6 ppb (5) 0.6 ppb (1) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 28.0 ppb (26) N/A 11.8 μg/m3 (11) 6.0 μg/m3 (25) 26.0
 
Jan. 24, 2021, 2 a.m. 4.2 ppb (4) 0.5 ppb (1) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 29.0 ppb (27) N/A 13.0 μg/m3 (13) 5.9 μg/m3 (25) 27.0
 
Jan. 24, 2021, 1 a.m. 4.7 ppb (5) 0.5 ppb (1) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 28.0 ppb (26) 0.16 ppb (3) 16.3 μg/m3 (16) 8.0 μg/m3 (34) 34.0
 
Jan. 24, 2021, midnight 4.9 ppb (5) 0.6 ppb (1) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 27.0 ppb (25) 0.17 ppb (3) 17.0 μg/m3 (16) 11.1 μg/m3 (47) 47.0
 
Jan. 23, 2021, 11 p.m. 6.2 ppb (6) 0.8 ppb (1) N/A 5.0 ppb (5) N/A 1.0 ppb (2) 24.0 ppb (23) 0.18 ppb (3) 21.5 μg/m3 (20) 10.8 μg/m3 (46) 46.0
 
Jan. 23, 2021, 10 p.m. 6.1 ppb (6) 1.0 ppb (1) N/A 5.0 ppb (5) N/A 1.0 ppb (2) 26.0 ppb (25) 0.16 ppb (3) 20.6 μg/m3 (20) 9.4 μg/m3 (40) 40.0
 
Jan. 23, 2021, 9 p.m. 6.1 ppb (6) 1.7 ppb (2) N/A 4.0 ppb (4) N/A 1.0 ppb (2) 27.0 ppb (25) 0.15 ppb (2) 14.6 μg/m3 (14) 6.5 μg/m3 (28) 28.0
 
Jan. 23, 2021, 8 p.m. 6.8 ppb (7) 2.2 ppb (3) N/A 5.0 ppb (5) N/A 1.0 ppb (2) 27.0 ppb (25) 0.15 ppb (2) 15.0 μg/m3 (14) 6.2 μg/m3 (26) 26.0
 
Jan. 23, 2021, 7 p.m. 6.5 ppb (7) 2.3 ppb (3) N/A 4.0 ppb (4) N/A 1.0 ppb (2) 25.0 ppb (24) 0.14 ppb (2) 13.5 μg/m3 (13) 6.7 μg/m3 (28) 28.0
 
Jan. 23, 2021, 6 p.m. 6.9 ppb (7) 2.7 ppb (3) N/A 4.0 ppb (4) N/A 2.0 ppb (3) 22.0 ppb (21) 0.15 ppb (2) 16.6 μg/m3 (16) 7.3 μg/m3 (31) 31.0
 
Jan. 23, 2021, 5 p.m. 13.6 ppb (13) 6.1 ppb (6) N/A 7.0 ppb (7) N/A 3.0 ppb (5) 16.0 ppb (15) 0.19 ppb (3) 14.3 μg/m3 (14) 7.0 μg/m3 (30) 30.0
 
Jan. 23, 2021, 4 p.m. 15.4 ppb (15) 6.0 ppb (6) N/A 9.0 ppb (9) N/A 0.0 ppb (0) 14.0 ppb (13) 0.28 ppb (4) 13.1 μg/m3 (13) 7.5 μg/m3 (32) 32.0
 
Jan. 23, 2021, 3 p.m. 20.6 ppb (20) 6.0 ppb (6) N/A 15.0 ppb (15) N/A 0.0 ppb (0) 9.0 ppb (9) 0.33 ppb (4) 11.0 μg/m3 (11) 6.5 μg/m3 (28) 28.0
 
Jan. 23, 2021, 2 p.m. 12.4 ppb (12) 1.4 ppb (2) N/A 11.0 ppb (11) N/A 0.0 ppb (0) 12.0 ppb (12) 0.24 ppb (3) 9.1 μg/m3 (9) 5.8 μg/m3 (25) 25.0
 
Jan. 23, 2021, 1 p.m. 14.9 ppb (15) 1.8 ppb (2) N/A 13.0 ppb (13) N/A 0.0 ppb (0) 11.0 ppb (11) 0.27 ppb (4) 9.4 μg/m3 (9) 6.2 μg/m3 (26) 26.0
 
Jan. 23, 2021, noon 9.9 ppb (10) 1.0 ppb (1) N/A 9.0 ppb (9) N/A 0.0 ppb (0) 14.0 ppb (13) 0.18 ppb (3) 8.9 μg/m3 (9) 5.6 μg/m3 (24) 24.0
 
Jan. 23, 2021, 11 a.m. 8.2 ppb (8) 0.6 ppb (1) N/A 8.0 ppb (8) N/A 0.0 ppb (0) 16.0 ppb (15) 0.18 ppb (3) 9.8 μg/m3 (10) 6.2 μg/m3 (26) 26.0
 
Jan. 23, 2021, 10 a.m. 7.2 ppb (7) 0.4 ppb (1) N/A 7.0 ppb (7) N/A 0.0 ppb (0) 16.0 ppb (15) 0.25 ppb (3) 9.8 μg/m3 (10) 6.5 μg/m3 (28) 28.0
 
Jan. 23, 2021, 9 a.m. 6.2 ppb (6) 0.3 ppb (1) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 16.0 ppb (15) 0.14 ppb (2) 12.7 μg/m3 (12) 8.6 μg/m3 (36) 36.0
 
Jan. 23, 2021, 8 a.m. 9.5 ppb (9) 0.4 ppb (1) N/A 9.0 ppb (9) N/A 0.0 ppb (0) 13.0 ppb (13) 0.15 ppb (2) 15.5 μg/m3 (15) 11.2 μg/m3 (47) 47.0
 
Jan. 23, 2021, 7 a.m. 13.6 ppb (13) 0.8 ppb (1) N/A 13.0 ppb (13) N/A 0.0 ppb (0) 10.0 ppb (10) 0.23 ppb (3) 17.0 μg/m3 (16) 11.7 μg/m3 (49) 49.0
 
Jan. 23, 2021, 6 a.m. 8.8 ppb (9) 0.3 ppb (1) N/A 8.0 ppb (8) N/A 0.0 ppb (0) 16.0 ppb (15) 0.15 ppb (2) 17.5 μg/m3 (17) 11.3 μg/m3 (48) 48.0
 
Jan. 23, 2021, 5 a.m. 13.6 ppb (13) 0.6 ppb (1) N/A 13.0 ppb (13) N/A 1.0 ppb (2) 13.0 ppb (13) 0.17 ppb (3) 17.3 μg/m3 (17) 11.7 μg/m3 (49) 49.0
 
Jan. 23, 2021, 4 a.m. 6.0 ppb (6) 0.3 ppb (1) N/A 6.0 ppb (6) N/A 1.0 ppb (2) 21.0 ppb (20) 0.16 ppb (3) 17.7 μg/m3 (17) 10.6 μg/m3 (45) 45.0
 
Jan. 23, 2021, 3 a.m. 6.0 ppb (6) 0.5 ppb (1) N/A 6.0 ppb (6) N/A 1.0 ppb (2) 23.0 ppb (22) N/A 16.9 μg/m3 (16) 9.5 μg/m3 (40) 40.0
 
Jan. 23, 2021, 2 a.m. 8.1 ppb (8) 0.4 ppb (1) N/A 8.0 ppb (8) N/A 1.0 ppb (2) 20.0 ppb (19) N/A 20.9 μg/m3 (20) 10.7 μg/m3 (45) 45.0
 
Jan. 23, 2021, 1 a.m. 16.8 ppb (16) 0.6 ppb (1) N/A 16.0 ppb (16) N/A 1.0 ppb (2) 13.0 ppb (13) 0.21 ppb (3) 21.3 μg/m3 (20) 11.5 μg/m3 (48) 48.0
 
Jan. 23, 2021, midnight 15.1 ppb (15) 0.5 ppb (1) N/A 15.0 ppb (15) N/A 1.0 ppb (2) 16.0 ppb (15) 0.23 ppb (3) 18.8 μg/m3 (18) 9.8 μg/m3 (41) 41.0
 
Jan. 22, 2021, 11 p.m. 9.5 ppb (9) 0.4 ppb (1) N/A 9.0 ppb (9) N/A 1.0 ppb (2) 22.0 ppb (21) 0.18 ppb (3) 15.5 μg/m3 (15) 9.0 μg/m3 (38) 38.0
 
Jan. 22, 2021, 10 p.m. 8.6 ppb (9) 1.2 ppb (2) N/A 7.0 ppb (7) N/A 3.0 ppb (5) 24.0 ppb (23) 0.16 ppb (3) 13.3 μg/m3 (13) 7.8 μg/m3 (33) 33.0
 
Jan. 22, 2021, 9 p.m. 10.0 ppb (10) 2.1 ppb (2) N/A 8.0 ppb (8) N/A 4.0 ppb (6) 23.0 ppb (22) 0.16 ppb (3) 13.8 μg/m3 (13) 8.0 μg/m3 (34) 34.0
 
Jan. 22, 2021, 8 p.m. 5.5 ppb (6) 1.4 ppb (2) N/A 4.0 ppb (4) N/A 2.0 ppb (3) 27.0 ppb (25) 0.14 ppb (2) 11.5 μg/m3 (11) 6.6 μg/m3 (28) 28.0
 
Jan. 22, 2021, 7 p.m. 9.5 ppb (9) 3.5 ppb (4) N/A 6.0 ppb (6) N/A 3.0 ppb (5) 25.0 ppb (24) 0.15 ppb (2) 13.5 μg/m3 (13) 6.3 μg/m3 (27) 27.0
 
Jan. 22, 2021, 6 p.m. 9.4 ppb (9) 2.8 ppb (3) N/A 7.0 ppb (7) N/A 5.0 ppb (8) 24.0 ppb (23) 0.15 ppb (2) 14.2 μg/m3 (14) 7.2 μg/m3 (31) 31.0
 
Jan. 22, 2021, 5 p.m. 8.8 ppb (9) 3.1 ppb (3) N/A 6.0 ppb (6) N/A 4.0 ppb (6) 25.0 ppb (24) 0.16 ppb (3) 14.4 μg/m3 (14) 6.5 μg/m3 (28) 28.0
 
Jan. 22, 2021, 4 p.m. 9.5 ppb (9) 2.8 ppb (3) N/A 7.0 ppb (7) N/A 4.0 ppb (6) 23.0 ppb (22) 0.16 ppb (3) 16.0 μg/m3 (15) 8.3 μg/m3 (35) 35.0
 
Jan. 22, 2021, 3 p.m. 6.2 ppb (6) 1.3 ppb (2) N/A 5.0 ppb (5) N/A 1.0 ppb (2) 24.0 ppb (23) 0.17 ppb (3) 12.5 μg/m3 (12) 6.3 μg/m3 (27) 27.0
 
Jan. 22, 2021, 2 p.m. 6.8 ppb (7) 0.9 ppb (1) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 23.0 ppb (22) 0.2 ppb (3) 14.4 μg/m3 (14) 6.8 μg/m3 (29) 29.0
 
Jan. 22, 2021, 1 p.m. 5.7 ppb (6) 0.8 ppb (1) N/A 5.0 ppb (5) N/A 1.0 ppb (2) 24.0 ppb (23) 0.17 ppb (3) 12.2 μg/m3 (12) 6.9 μg/m3 (29) 29.0
 
Jan. 22, 2021, noon 8.8 ppb (9) 0.6 ppb (1) N/A 8.0 ppb (8) N/A 3.0 ppb (5) 21.0 ppb (20) 0.15 ppb (2) 10.4 μg/m3 (10) 6.4 μg/m3 (27) 27.0
 
Jan. 22, 2021, 11 a.m. 6.2 ppb (6) 0.6 ppb (1) N/A 6.0 ppb (6) N/A 2.0 ppb (3) 23.0 ppb (22) 0.14 ppb (2) 9.8 μg/m3 (10) 5.8 μg/m3 (25) 25.0
 
Jan. 22, 2021, 10 a.m. 3.5 ppb (4) 0.3 ppb (1) N/A 3.0 ppb (3) N/A 1.0 ppb (2) 24.0 ppb (23) 0.14 ppb (2) 9.5 μg/m3 (9) 6.4 μg/m3 (27) 27.0
 
Jan. 22, 2021, 9 a.m. 2.6 ppb (3) 0.3 ppb (1) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 24.0 ppb (23) 0.13 ppb (2) 9.7 μg/m3 (9) 6.3 μg/m3 (27) 27.0
 
Jan. 22, 2021, 8 a.m. 3.7 ppb (4) 0.4 ppb (1) N/A 3.0 ppb (3) N/A 1.0 ppb (2) 21.0 ppb (20) 0.14 ppb (2) 10.2 μg/m3 (10) 5.1 μg/m3 (22) 22.0
 
Jan. 22, 2021, 7 a.m. 4.9 ppb (5) 0.5 ppb (1) N/A 4.0 ppb (4) N/A 1.0 ppb (2) 21.0 ppb (20) 0.16 ppb (3) 9.6 μg/m3 (9) 5.0 μg/m3 (21) 21.0
 
Jan. 22, 2021, 6 a.m. 4.6 ppb (5) 0.3 ppb (1) N/A 4.0 ppb (4) N/A 1.0 ppb (2) 22.0 ppb (21) 0.15 ppb (2) 9.2 μg/m3 (9) 4.6 μg/m3 (20) 21.0
 
Jan. 22, 2021, 5 a.m. 3.3 ppb (4) 0.6 ppb (1) N/A 3.0 ppb (3) N/A 1.0 ppb (2) 24.0 ppb (23) 0.15 ppb (2) 9.4 μg/m3 (9) 4.3 μg/m3 (18) 23.0
 
Jan. 22, 2021, 4 a.m. 2.8 ppb (3) 0.3 ppb (1) N/A 2.0 ppb (2) N/A 1.0 ppb (2) 24.0 ppb (23) 0.14 ppb (2) 9.5 μg/m3 (9) 4.2 μg/m3 (18) 23.0
 
Jan. 22, 2021, 3 a.m. 2.9 ppb (3) 0.3 ppb (1) N/A 3.0 ppb (3) N/A 1.0 ppb (2) 24.0 ppb (23) N/A 8.0 μg/m3 (8) 4.1 μg/m3 (18) 23.0
 
Jan. 22, 2021, 2 a.m. 3.2 ppb (4) 0.5 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 25.0 ppb (24) N/A 11.7 μg/m3 (11) 4.1 μg/m3 (18) 24.0
 
Jan. 22, 2021, 1 a.m. 3.3 ppb (4) 0.5 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 25.0 ppb (24) 0.17 ppb (3) 9.7 μg/m3 (9) 4.0 μg/m3 (17) 24.0
 
Jan. 22, 2021, midnight 3.7 ppb (4) 0.6 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 25.0 ppb (24) 0.17 ppb (3) 10.7 μg/m3 (10) 4.5 μg/m3 (19) 24.0
 
Jan. 21, 2021, 11 p.m. 5.0 ppb (5) 1.0 ppb (1) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 23.0 ppb (22) 0.18 ppb (3) 17.0 μg/m3 (16) 4.4 μg/m3 (19) 22.0
 
Jan. 21, 2021, 10 p.m. 4.4 ppb (5) 1.0 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 23.0 ppb (22) 0.17 ppb (3) 12.8 μg/m3 (12) 4.2 μg/m3 (18) 22.0
 
Jan. 21, 2021, 9 p.m. 5.0 ppb (5) 1.5 ppb (2) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 22.0 ppb (21) 0.17 ppb (3) 21.0 μg/m3 (20) 4.6 μg/m3 (20) 21.0
 
Jan. 21, 2021, 8 p.m. 4.3 ppb (5) 1.3 ppb (2) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 22.0 ppb (21) 0.17 ppb (3) 24.6 μg/m3 (23) 4.6 μg/m3 (20) 23.0
 
Jan. 21, 2021, 7 p.m. 4.1 ppb (4) 1.4 ppb (2) N/A 3.0 ppb (3) N/A 1.0 ppb (2) 22.0 ppb (21) 0.17 ppb (3) 24.1 μg/m3 (23) 4.7 μg/m3 (20) 23.0
 
Jan. 21, 2021, 6 p.m. 4.3 ppb (5) 1.4 ppb (2) N/A 3.0 ppb (3) N/A 1.0 ppb (2) 23.0 ppb (22) 0.17 ppb (3) 19.2 μg/m3 (18) 4.3 μg/m3 (18) 22.0
 
Jan. 21, 2021, 5 p.m. 3.5 ppb (4) 1.2 ppb (2) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 25.0 ppb (24) 0.17 ppb (3) 15.6 μg/m3 (15) 4.0 μg/m3 (17) 24.0
 
Jan. 21, 2021, 4 p.m. 2.5 ppb (3) 0.7 ppb (1) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 26.0 ppb (25) 0.16 ppb (3) 20.7 μg/m3 (20) 5.1 μg/m3 (22) 25.0
 
Jan. 21, 2021, 3 p.m. 2.5 ppb (3) 0.6 ppb (1) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 28.0 ppb (26) 0.16 ppb (3) 21.2 μg/m3 (20) 5.1 μg/m3 (22) 26.0
 
Jan. 21, 2021, 2 p.m. 3.0 ppb (3) 0.6 ppb (1) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 28.0 ppb (26) 0.16 ppb (3) 17.9 μg/m3 (17) 5.1 μg/m3 (22) 26.0
 
Jan. 21, 2021, 1 p.m. 3.9 ppb (4) 0.5 ppb (1) N/A 3.0 ppb (3) N/A 1.0 ppb (2) 27.0 ppb (25) 0.17 ppb (3) 10.5 μg/m3 (10) 3.9 μg/m3 (17) 25.0
 
Jan. 21, 2021, noon 7.2 ppb (7) 0.4 ppb (1) N/A 7.0 ppb (7) N/A 4.0 ppb (6) 24.0 ppb (23) 0.16 ppb (3) 12.1 μg/m3 (12) 3.3 μg/m3 (14) 23.0
 
Jan. 21, 2021, 11 a.m. 7.0 ppb (7) 0.4 ppb (1) N/A 7.0 ppb (7) N/A 5.0 ppb (8) 25.0 ppb (24) 0.15 ppb (2) 7.5 μg/m3 (7) 2.0 μg/m3 (9) 24.0
 
Jan. 21, 2021, 10 a.m. 9.1 ppb (9) 0.3 ppb (1) N/A 9.0 ppb (9) N/A 8.0 ppb (12) 23.0 ppb (22) 0.16 ppb (3) 8.5 μg/m3 (8) 1.5 μg/m3 (7) 22.0
 
Jan. 21, 2021, 9 a.m. 4.6 ppb (5) 0.3 ppb (1) N/A 4.0 ppb (4) N/A 2.0 ppb (3) 28.0 ppb (26) 0.15 ppb (2) 6.6 μg/m3 (7) 1.1 μg/m3 (5) 26.0
 
Jan. 21, 2021, 8 a.m. 3.1 ppb (3) 0.3 ppb (1) N/A 3.0 ppb (3) N/A 1.0 ppb (2) 30.0 ppb (28) 0.15 ppb (2) 7.0 μg/m3 (7) 1.0 μg/m3 (5) 28.0
 
Jan. 21, 2021, 7 a.m. 7.2 ppb (7) 0.2 ppb (1) N/A 7.0 ppb (7) N/A 6.0 ppb (9) 26.0 ppb (25) 0.16 ppb (3) 9.3 μg/m3 (9) 1.1 μg/m3 (5) 25.0
 
Jan. 21, 2021, 6 a.m. 8.8 ppb (9) 0.3 ppb (1) N/A 8.0 ppb (8) N/A 8.0 ppb (12) 24.0 ppb (23) 0.16 ppb (3) 7.6 μg/m3 (8) 1.0 μg/m3 (5) 23.0
 
Jan. 21, 2021, 5 a.m. 4.6 ppb (5) 0.3 ppb (1) N/A 4.0 ppb (4) N/A 2.0 ppb (3) 29.0 ppb (27) 0.15 ppb (2) 6.5 μg/m3 (7) 1.0 μg/m3 (5) 27.0