ID: 1511

AQSQID: 380150003

Site Name: Bismarck Residential

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

Updated: Oct. 22, 2021, 2:08 p.m.

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

Reporting: True, Located: True

Current AQI: 15.0

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
Oct. 22, 2021, 11 a.m. 3.9 ppb (4) 0.4 ppb (1) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 9.0 ppb (9) 0.14 ppb (2) 8.0 μg/m3 (8) 3.5 μg/m3 (15) 15.0
 
Oct. 22, 2021, 10 a.m. 8.1 ppb (8) 2.4 ppb (3) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 8.0 ppb (8) 0.14 ppb (2) 10.0 μg/m3 (10) 3.6 μg/m3 (16) 16.0
 
Oct. 22, 2021, 9 a.m. 2.2 ppb (3) 0.2 ppb (1) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 11.0 ppb (11) 0.13 ppb (2) 10.0 μg/m3 (10) 3.8 μg/m3 (16) 16.0
 
Oct. 22, 2021, 8 a.m. 3.3 ppb (4) 0.2 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 11.0 ppb (11) 0.14 ppb (2) 13.0 μg/m3 (13) 4.1 μg/m3 (18) 18.0
 
Oct. 22, 2021, 7 a.m. 2.8 ppb (3) 0.2 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 12.0 ppb (12) 0.14 ppb (2) 15.0 μg/m3 (14) 4.3 μg/m3 (18) 18.0
 
Oct. 22, 2021, 6 a.m. 2.6 ppb (3) 0.2 ppb (1) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 13.0 ppb (13) 0.13 ppb (2) 18.0 μg/m3 (17) 4.3 μg/m3 (18) 18.0
 
Oct. 22, 2021, 5 a.m. 2.4 ppb (3) 0.2 ppb (1) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 14.0 ppb (13) 0.14 ppb (2) 21.0 μg/m3 (20) 4.6 μg/m3 (20) 20.0
 
Oct. 22, 2021, 4 a.m. 2.5 ppb (3) 0.1 ppb (1) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 15.0 ppb (14) 0.14 ppb (2) 21.0 μg/m3 (20) 4.4 μg/m3 (19) 20.0
 
Oct. 22, 2021, 3 a.m. 1.6 ppb (2) 0.1 ppb (1) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 17.0 ppb (16) N/A 18.0 μg/m3 (17) 4.1 μg/m3 (18) 18.0
 
Oct. 22, 2021, 2 a.m. 1.6 ppb (2) 0.2 ppb (1) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 18.0 ppb (17) N/A 20.0 μg/m3 (19) 3.9 μg/m3 (17) 19.0
 
Oct. 22, 2021, 1 a.m. 3.4 ppb (4) 0.1 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 19.0 ppb (18) 0.18 ppb (3) 18.0 μg/m3 (17) 3.9 μg/m3 (17) 18.0
 
Oct. 22, 2021, midnight 4.8 ppb (5) 0.2 ppb (1) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 21.0 ppb (20) 0.18 ppb (3) 12.0 μg/m3 (12) 3.5 μg/m3 (15) 20.0
 
Oct. 21, 2021, 11 p.m. 4.0 ppb (4) 0.3 ppb (1) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 23.0 ppb (22) 0.2 ppb (3) 29.0 μg/m3 (27) 4.0 μg/m3 (17) 27.0
 
Oct. 21, 2021, 10 p.m. 2.7 ppb (3) 0.4 ppb (1) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 25.0 ppb (24) 0.17 ppb (3) 16.0 μg/m3 (15) 3.6 μg/m3 (16) 24.0
 
Oct. 21, 2021, 9 p.m. 1.8 ppb (2) 0.4 ppb (1) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 26.0 ppb (25) 0.16 ppb (3) 12.0 μg/m3 (12) 3.3 μg/m3 (14) 25.0
 
Oct. 21, 2021, 8 p.m. 1.5 ppb (2) 0.4 ppb (1) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 27.0 ppb (25) 0.16 ppb (3) 12.0 μg/m3 (12) 3.0 μg/m3 (13) 25.0
 
Oct. 21, 2021, 7 p.m. 2.2 ppb (3) 0.7 ppb (1) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 26.0 ppb (25) 0.16 ppb (3) 24.0 μg/m3 (23) 4.7 μg/m3 (20) 25.0
 
Oct. 21, 2021, 6 p.m. 2.7 ppb (3) 1.0 ppb (1) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 24.0 ppb (23) 0.17 ppb (3) 13.0 μg/m3 (13) 4.4 μg/m3 (19) 23.0
 
Oct. 21, 2021, 5 p.m. 5.1 ppb (5) 2.0 ppb (2) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 21.0 ppb (20) 0.18 ppb (3) 19.0 μg/m3 (18) 4.8 μg/m3 (20) 20.0
 
Oct. 21, 2021, 4 p.m. 11.1 ppb (11) 4.7 ppb (5) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 19.0 ppb (18) 0.21 ppb (3) 25.0 μg/m3 (24) 5.4 μg/m3 (23) 24.0
 
Oct. 21, 2021, 3 p.m. 29.3 ppb (28) 15.3 ppb (15) N/A 14.0 ppb (14) N/A 0.0 ppb (0) 10.0 ppb (10) 0.34 ppb (4) 28.0 μg/m3 (26) 6.4 μg/m3 (27) 28.0
 
Oct. 21, 2021, 2 p.m. 55.7 ppb (53) 35.4 ppb (34) N/A 20.0 ppb (19) N/A 0.0 ppb (0) 4.0 ppb (4) 0.66 ppb (8) 21.0 μg/m3 (20) 6.6 μg/m3 (28) 53.0
 
Oct. 21, 2021, 1 p.m. 46.0 ppb (44) 25.0 ppb (24) N/A 21.0 ppb (20) N/A 0.0 ppb (0) 2.0 ppb (2) 0.52 ppb (6) 15.0 μg/m3 (14) 5.1 μg/m3 (22) 44.0
 
Oct. 21, 2021, noon 32.7 ppb (31) 14.0 ppb (14) N/A 19.0 ppb (18) N/A 0.0 ppb (0) 2.0 ppb (2) 0.4 ppb (5) 15.0 μg/m3 (14) 5.7 μg/m3 (24) 31.0
 
Oct. 21, 2021, 11 a.m. 28.1 ppb (27) 7.3 ppb (7) N/A 21.0 ppb (20) N/A 0.0 ppb (0) 3.0 ppb (3) 0.4 ppb (5) 12.0 μg/m3 (12) 4.6 μg/m3 (20) 27.0
 
Oct. 21, 2021, 10 a.m. 12.9 ppb (13) 1.3 ppb (2) N/A 12.0 ppb (12) N/A 0.0 ppb (0) 11.0 ppb (11) 0.27 ppb (4) 12.0 μg/m3 (12) 3.7 μg/m3 (16) 16.0
 
Oct. 21, 2021, 9 a.m. 6.9 ppb (7) 0.6 ppb (1) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 15.0 ppb (14) 0.25 ppb (3) 12.0 μg/m3 (12) 3.5 μg/m3 (15) 15.0
 
Oct. 21, 2021, 8 a.m. 7.0 ppb (7) 0.6 ppb (1) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 14.0 ppb (13) 0.23 ppb (3) 11.0 μg/m3 (11) 3.5 μg/m3 (15) 15.0
 
Oct. 21, 2021, 7 a.m. 6.2 ppb (6) 0.7 ppb (1) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 15.0 ppb (14) 0.23 ppb (3) 13.0 μg/m3 (13) 3.5 μg/m3 (15) 15.0
 
Oct. 21, 2021, 6 a.m. 5.7 ppb (6) 0.5 ppb (1) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 15.0 ppb (14) 0.21 ppb (3) 11.0 μg/m3 (11) 3.6 μg/m3 (16) 16.0
 
Oct. 21, 2021, 5 a.m. 3.5 ppb (4) 0.4 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 16.0 ppb (15) 0.17 ppb (3) 13.0 μg/m3 (13) 3.5 μg/m3 (15) 15.0
 
Oct. 21, 2021, 4 a.m. 4.3 ppb (5) 0.4 ppb (1) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 16.0 ppb (15) 0.18 ppb (3) 14.0 μg/m3 (13) 3.6 μg/m3 (16) 16.0
 
Oct. 21, 2021, 3 a.m. 5.9 ppb (6) 0.5 ppb (1) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 15.0 ppb (14) N/A 11.0 μg/m3 (11) 3.3 μg/m3 (14) 14.0
 
Oct. 21, 2021, 2 a.m. 5.1 ppb (5) 0.4 ppb (1) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 17.0 ppb (16) N/A 11.0 μg/m3 (11) 3.3 μg/m3 (14) 16.0
 
Oct. 21, 2021, 1 a.m. 5.7 ppb (6) 0.6 ppb (1) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 17.0 ppb (16) 0.17 ppb (3) 11.0 μg/m3 (11) 3.4 μg/m3 (15) 16.0
 
Oct. 21, 2021, midnight 5.7 ppb (6) 0.7 ppb (1) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 18.0 ppb (17) 0.18 ppb (3) 12.0 μg/m3 (12) 3.4 μg/m3 (15) 17.0
 
Oct. 20, 2021, 11 p.m. 4.2 ppb (4) 0.7 ppb (1) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 21.0 ppb (20) 0.17 ppb (3) 14.0 μg/m3 (13) 2.6 μg/m3 (11) 20.0
 
Oct. 20, 2021, 10 p.m. 2.7 ppb (3) 0.8 ppb (1) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 22.0 ppb (21) 0.16 ppb (3) 10.0 μg/m3 (10) 2.0 μg/m3 (9) 21.0
 
Oct. 20, 2021, 9 p.m. 2.7 ppb (3) 0.8 ppb (1) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 21.0 ppb (20) 0.16 ppb (3) 11.0 μg/m3 (11) 2.2 μg/m3 (10) 20.0
 
Oct. 20, 2021, 8 p.m. 2.3 ppb (3) 0.7 ppb (1) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 21.0 ppb (20) 0.16 ppb (3) 8.0 μg/m3 (8) 1.7 μg/m3 (8) 20.0
 
Oct. 20, 2021, 7 p.m. 1.7 ppb (2) 0.7 ppb (1) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 21.0 ppb (20) 0.15 ppb (2) 7.0 μg/m3 (7) 1.6 μg/m3 (7) 20.0
 
Oct. 20, 2021, 6 p.m. 1.8 ppb (2) 0.6 ppb (1) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 21.0 ppb (20) 0.15 ppb (2) 7.0 μg/m3 (7) 1.5 μg/m3 (7) 20.0
 
Oct. 20, 2021, 5 p.m. 2.5 ppb (3) 0.9 ppb (1) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 19.0 ppb (18) 0.16 ppb (3) 6.0 μg/m3 (6) 1.7 μg/m3 (8) 18.0
 
Oct. 20, 2021, 4 p.m. 3.3 ppb (4) 1.1 ppb (2) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 17.0 ppb (16) 0.16 ppb (3) 6.0 μg/m3 (6) 1.9 μg/m3 (8) 16.0
 
Oct. 20, 2021, 3 p.m. 3.1 ppb (3) 1.1 ppb (2) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 16.0 ppb (15) 0.15 ppb (2) 5.0 μg/m3 (5) 1.9 μg/m3 (8) 15.0
 
Oct. 20, 2021, 2 p.m. 2.4 ppb (3) 0.8 ppb (1) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 16.0 ppb (15) 0.15 ppb (2) 4.0 μg/m3 (4) 1.9 μg/m3 (8) 15.0
 
Oct. 20, 2021, 1 p.m. 2.4 ppb (3) 0.8 ppb (1) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 16.0 ppb (15) 0.16 ppb (3) 7.0 μg/m3 (7) 1.9 μg/m3 (8) 15.0
 
Oct. 20, 2021, noon 2.1 ppb (2) 0.7 ppb (1) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 17.0 ppb (16) 0.15 ppb (2) 5.0 μg/m3 (5) 1.7 μg/m3 (8) 16.0
 
Oct. 20, 2021, 11 a.m. 1.3 ppb (2) 0.5 ppb (1) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 18.0 ppb (17) 0.15 ppb (2) 4.0 μg/m3 (4) 1.7 μg/m3 (8) 17.0
 
Oct. 20, 2021, 10 a.m. 0.9 ppb (1) 0.3 ppb (1) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 18.0 ppb (17) 0.14 ppb (2) 6.0 μg/m3 (6) 1.7 μg/m3 (8) 17.0
 
Oct. 20, 2021, 9 a.m. 0.6 ppb (1) 0.2 ppb (1) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 19.0 ppb (18) 0.14 ppb (2) 7.0 μg/m3 (7) 1.7 μg/m3 (8) 18.0
 
Oct. 20, 2021, 8 a.m. 0.7 ppb (1) 0.2 ppb (1) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 19.0 ppb (18) 0.14 ppb (2) 7.0 μg/m3 (7) 1.9 μg/m3 (8) 18.0
 
Oct. 20, 2021, 7 a.m. 0.6 ppb (1) 0.2 ppb (1) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 19.0 ppb (18) 0.14 ppb (2) 9.0 μg/m3 (9) 2.0 μg/m3 (9) 18.0
 
Oct. 20, 2021, 6 a.m. 0.8 ppb (1) 0.2 ppb (1) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 19.0 ppb (18) 0.14 ppb (2) 10.0 μg/m3 (10) 2.2 μg/m3 (10) 18.0
 
Oct. 20, 2021, 5 a.m. 0.9 ppb (1) 0.3 ppb (1) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 20.0 ppb (19) 0.14 ppb (2) 11.0 μg/m3 (11) 2.5 μg/m3 (11) 19.0
 
Oct. 20, 2021, 4 a.m. 0.9 ppb (1) 0.2 ppb (1) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 22.0 ppb (21) 0.14 ppb (2) 12.0 μg/m3 (12) 2.5 μg/m3 (11) 21.0
 
Oct. 20, 2021, 3 a.m. 0.8 ppb (1) 0.2 ppb (1) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 24.0 ppb (23) N/A 11.0 μg/m3 (11) 2.6 μg/m3 (11) 23.0
 
Oct. 20, 2021, 2 a.m. 1.0 ppb (1) 0.2 ppb (1) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 25.0 ppb (24) N/A 14.0 μg/m3 (13) 2.9 μg/m3 (13) 24.0
 
Oct. 20, 2021, 1 a.m. 1.5 ppb (2) 0.4 ppb (1) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 25.0 ppb (24) 0.15 ppb (2) 11.0 μg/m3 (11) 3.1 μg/m3 (13) 24.0
 
Oct. 20, 2021, midnight 1.1 ppb (2) 0.2 ppb (1) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 25.0 ppb (24) 0.15 ppb (2) 11.0 μg/m3 (11) 2.6 μg/m3 (11) 24.0
 
Oct. 19, 2021, 11 p.m. 1.6 ppb (2) 0.4 ppb (1) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 24.0 ppb (23) 0.15 ppb (2) 10.0 μg/m3 (10) 2.7 μg/m3 (12) 23.0
 
Oct. 19, 2021, 10 p.m. 1.7 ppb (2) 0.5 ppb (1) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 24.0 ppb (23) 0.16 ppb (3) 11.0 μg/m3 (11) 2.7 μg/m3 (12) 23.0
 
Oct. 19, 2021, 9 p.m. 1.4 ppb (2) 0.4 ppb (1) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 24.0 ppb (23) 0.15 ppb (2) 11.0 μg/m3 (11) 3.1 μg/m3 (13) 23.0
 
Oct. 19, 2021, 8 p.m. 1.6 ppb (2) 0.5 ppb (1) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 24.0 ppb (23) 0.15 ppb (2) 10.0 μg/m3 (10) 3.0 μg/m3 (13) 23.0
 
Oct. 19, 2021, 7 p.m. 1.6 ppb (2) 0.5 ppb (1) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 22.0 ppb (21) 0.15 ppb (2) 10.0 μg/m3 (10) 3.3 μg/m3 (14) 21.0
 
Oct. 19, 2021, 6 p.m. 1.6 ppb (2) 0.5 ppb (1) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 22.0 ppb (21) 0.15 ppb (2) 10.0 μg/m3 (10) 3.3 μg/m3 (14) 21.0
 
Oct. 19, 2021, 5 p.m. 1.6 ppb (2) 0.5 ppb (1) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 22.0 ppb (21) 0.15 ppb (2) 9.0 μg/m3 (9) 3.5 μg/m3 (15) 21.0
 
Oct. 19, 2021, 4 p.m. 1.5 ppb (2) 0.5 ppb (1) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 22.0 ppb (21) 0.16 ppb (3) 12.0 μg/m3 (12) 4.0 μg/m3 (17) 21.0
 
Oct. 19, 2021, 3 p.m. 1.4 ppb (2) 0.4 ppb (1) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 19.0 ppb (18) 0.15 ppb (2) 12.0 μg/m3 (12) 5.4 μg/m3 (23) 23.0
 
Oct. 19, 2021, 2 p.m. 1.3 ppb (2) 0.4 ppb (1) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 16.0 ppb (15) 0.15 ppb (2) 13.0 μg/m3 (13) 6.2 μg/m3 (26) 26.0
 
Oct. 19, 2021, 1 p.m. 1.5 ppb (2) 0.5 ppb (1) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 15.0 ppb (14) 0.16 ppb (3) 14.0 μg/m3 (13) 6.5 μg/m3 (28) 28.0
 
Oct. 19, 2021, noon 2.4 ppb (3) 0.9 ppb (1) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 13.0 ppb (13) 0.16 ppb (3) 14.0 μg/m3 (13) 6.7 μg/m3 (28) 28.0
 
Oct. 19, 2021, 11 a.m. 1.3 ppb (2) 0.3 ppb (1) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 13.0 ppb (13) 0.16 ppb (3) 18.0 μg/m3 (17) 7.2 μg/m3 (31) 31.0
 
Oct. 19, 2021, 10 a.m. 1.5 ppb (2) 0.2 ppb (1) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 14.0 ppb (13) 0.15 ppb (2) 20.0 μg/m3 (19) 9.3 μg/m3 (39) 39.0
 
Oct. 19, 2021, 9 a.m. 2.2 ppb (3) 0.3 ppb (1) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 14.0 ppb (13) 0.14 ppb (2) 28.0 μg/m3 (26) 10.5 μg/m3 (44) 44.0
 
Oct. 19, 2021, 8 a.m. 2.4 ppb (3) 0.2 ppb (1) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 15.0 ppb (14) 0.14 ppb (2) 32.0 μg/m3 (30) 10.0 μg/m3 (42) 42.0
 
Oct. 19, 2021, 7 a.m. 3.3 ppb (4) 0.2 ppb (1) N/A 3.0 ppb (3) N/A 1.0 ppb (2) 16.0 ppb (15) 0.14 ppb (2) 34.0 μg/m3 (32) 10.0 μg/m3 (42) 42.0
 
Oct. 19, 2021, 6 a.m. 4.4 ppb (5) 0.2 ppb (1) N/A 4.0 ppb (4) N/A 1.0 ppb (2) 17.0 ppb (16) 0.15 ppb (2) 31.0 μg/m3 (29) 9.6 μg/m3 (40) 40.0
 
Oct. 19, 2021, 5 a.m. 5.5 ppb (6) 0.2 ppb (1) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 20.0 ppb (19) 0.19 ppb (3) 26.0 μg/m3 (25) 5.9 μg/m3 (25) 25.0
 
Oct. 19, 2021, 4 a.m. 8.5 ppb (9) 0.3 ppb (1) N/A 8.0 ppb (8) N/A 0.0 ppb (0) 19.0 ppb (18) 0.3 ppb (4) 27.0 μg/m3 (25) 5.7 μg/m3 (24) 25.0
 
Oct. 19, 2021, 3 a.m. 14.5 ppb (14) 1.0 ppb (1) N/A 14.0 ppb (14) N/A 0.0 ppb (0) 16.0 ppb (15) N/A 33.0 μg/m3 (31) 7.3 μg/m3 (31) 31.0
 
Oct. 19, 2021, 2 a.m. 15.1 ppb (15) 2.4 ppb (3) N/A 13.0 ppb (13) N/A 0.0 ppb (0) 18.0 ppb (17) N/A 28.0 μg/m3 (26) 6.7 μg/m3 (28) 28.0
 
Oct. 19, 2021, 1 a.m. 6.2 ppb (6) 0.1 ppb (1) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 23.0 ppb (22) 0.18 ppb (3) 37.0 μg/m3 (35) 6.7 μg/m3 (28) 35.0
 
Oct. 19, 2021, midnight 5.5 ppb (6) 0.1 ppb (1) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 24.0 ppb (23) 0.2 ppb (3) 36.0 μg/m3 (34) 8.1 μg/m3 (34) 34.0
 
Oct. 18, 2021, 11 p.m. 15.3 ppb (15) 2.3 ppb (3) N/A 13.0 ppb (13) N/A 0.0 ppb (0) 21.0 ppb (20) 0.25 ppb (3) 27.0 μg/m3 (25) 5.9 μg/m3 (25) 25.0
 
Oct. 18, 2021, 10 p.m. 4.7 ppb (5) 0.6 ppb (1) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 28.0 ppb (26) 0.17 ppb (3) 25.0 μg/m3 (24) 4.8 μg/m3 (20) 26.0
 
Oct. 18, 2021, 9 p.m. 2.8 ppb (3) 0.4 ppb (1) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 31.0 ppb (29) 0.15 ppb (2) 20.0 μg/m3 (19) 4.3 μg/m3 (18) 29.0
 
Oct. 18, 2021, 8 p.m. 2.4 ppb (3) 0.5 ppb (1) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 31.0 ppb (29) 0.14 ppb (2) 19.0 μg/m3 (18) 4.4 μg/m3 (19) 29.0
 
Oct. 18, 2021, 7 p.m. 2.7 ppb (3) 0.6 ppb (1) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 29.0 ppb (27) 0.14 ppb (2) 19.0 μg/m3 (18) 4.2 μg/m3 (18) 27.0
 
Oct. 18, 2021, 6 p.m. 2.7 ppb (3) 0.7 ppb (1) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 28.0 ppb (26) 0.13 ppb (2) 21.0 μg/m3 (20) 4.4 μg/m3 (19) 26.0
 
Oct. 18, 2021, 5 p.m. 3.0 ppb (3) 0.8 ppb (1) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 26.0 ppb (25) 0.13 ppb (2) 20.0 μg/m3 (19) 4.3 μg/m3 (18) 25.0
 
Oct. 18, 2021, 4 p.m. 5.2 ppb (5) 1.5 ppb (2) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 21.0 ppb (20) 0.15 ppb (2) 21.0 μg/m3 (20) 4.8 μg/m3 (20) 20.0
 
Oct. 18, 2021, 3 p.m. 7.1 ppb (7) 2.3 ppb (3) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 18.0 ppb (17) 0.15 ppb (2) 20.0 μg/m3 (19) 5.3 μg/m3 (23) 23.0
 
Oct. 18, 2021, 2 p.m. 20.8 ppb (20) 9.2 ppb (9) N/A 12.0 ppb (12) N/A 0.0 ppb (0) 11.0 ppb (11) 0.25 ppb (3) 34.0 μg/m3 (32) 7.3 μg/m3 (31) 32.0
 
Oct. 18, 2021, 1 p.m. 10.4 ppb (10) 1.6 ppb (2) N/A 9.0 ppb (9) N/A 0.0 ppb (0) 13.0 ppb (13) 0.21 ppb (3) 18.0 μg/m3 (17) 5.1 μg/m3 (22) 22.0
 
Oct. 18, 2021, noon 5.9 ppb (6) 0.4 ppb (1) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 17.0 ppb (16) 0.17 ppb (3) 18.0 μg/m3 (17) 4.9 μg/m3 (21) 21.0
 
Oct. 18, 2021, 11 a.m. 3.2 ppb (4) 0.2 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 19.0 ppb (18) 0.18 ppb (3) 19.0 μg/m3 (18) 5.0 μg/m3 (21) 21.0
 
Oct. 18, 2021, 10 a.m. 2.4 ppb (3) 0.2 ppb (1) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 21.0 ppb (20) 0.14 ppb (2) 18.0 μg/m3 (17) 5.0 μg/m3 (21) 21.0
 
Oct. 18, 2021, 9 a.m. 2.8 ppb (3) 0.1 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 19.0 ppb (18) 0.12 ppb (2) 19.0 μg/m3 (18) 4.9 μg/m3 (21) 21.0
 
Oct. 18, 2021, 8 a.m. 5.6 ppb (6) 0.1 ppb (1) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 16.0 ppb (15) 0.13 ppb (2) 17.0 μg/m3 (16) 4.6 μg/m3 (20) 20.0
 
Oct. 18, 2021, 7 a.m. 3.6 ppb (4) 0.1 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 18.0 ppb (17) 0.13 ppb (2) 17.0 μg/m3 (16) 4.4 μg/m3 (19) 19.0
 
Oct. 18, 2021, 6 a.m. 2.6 ppb (3) 0.1 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 20.0 ppb (19) 0.12 ppb (2) 17.0 μg/m3 (16) 4.4 μg/m3 (19) 19.0
 
Oct. 18, 2021, 5 a.m. 3.5 ppb (4) 0.1 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 19.0 ppb (18) 0.13 ppb (2) 22.0 μg/m3 (21) 4.5 μg/m3 (19) 21.0
 
Oct. 18, 2021, 4 a.m. 7.7 ppb (8) 0.2 ppb (1) N/A 8.0 ppb (8) N/A 0.0 ppb (0) 16.0 ppb (15) 0.15 ppb (2) 19.0 μg/m3 (18) 4.4 μg/m3 (19) 19.0
 
Oct. 18, 2021, 3 a.m. 4.4 ppb (5) 0.1 ppb (1) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 23.0 ppb (22) N/A 11.0 μg/m3 (11) 3.7 μg/m3 (16) 22.0
 
Oct. 18, 2021, 2 a.m. 2.6 ppb (3) 0.1 ppb (1) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 26.0 ppb (25) N/A 11.0 μg/m3 (11) 3.5 μg/m3 (15) 25.0
 
Oct. 18, 2021, 1 a.m. 2.2 ppb (3) 0.2 ppb (1) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 26.0 ppb (25) 0.15 ppb (2) 12.0 μg/m3 (12) 3.5 μg/m3 (15) 25.0
 
Oct. 18, 2021, midnight 2.4 ppb (3) 0.1 ppb (1) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 27.0 ppb (25) 0.16 ppb (3) 12.0 μg/m3 (12) 3.9 μg/m3 (17) 25.0
 
Oct. 17, 2021, 11 p.m. 1.7 ppb (2) 0.2 ppb (1) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 29.0 ppb (27) 0.16 ppb (3) 14.0 μg/m3 (13) 4.2 μg/m3 (18) 27.0
 
Oct. 17, 2021, 10 p.m. 1.2 ppb (2) 0.2 ppb (1) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 31.0 ppb (29) 0.15 ppb (2) 11.0 μg/m3 (11) 3.1 μg/m3 (13) 29.0
 
Oct. 17, 2021, 9 p.m. 1.1 ppb (2) 0.3 ppb (1) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 33.0 ppb (31) 0.15 ppb (2) 9.0 μg/m3 (9) 2.7 μg/m3 (12) 31.0
 
Oct. 17, 2021, 8 p.m. 1.2 ppb (2) 0.3 ppb (1) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 33.0 ppb (31) 0.14 ppb (2) 9.0 μg/m3 (9) 2.7 μg/m3 (12) 31.0
 
Oct. 17, 2021, 7 p.m. 1.3 ppb (2) 0.4 ppb (1) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 32.0 ppb (30) 0.15 ppb (2) 9.0 μg/m3 (9) 2.9 μg/m3 (13) 30.0
 
Oct. 17, 2021, 6 p.m. 1.6 ppb (2) 0.5 ppb (1) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 29.0 ppb (27) 0.15 ppb (2) 11.0 μg/m3 (11) 3.3 μg/m3 (14) 27.0
 
Oct. 17, 2021, 5 p.m. 1.9 ppb (2) 0.5 ppb (1) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 28.0 ppb (26) 0.15 ppb (2) 10.0 μg/m3 (10) 3.5 μg/m3 (15) 26.0
 
Oct. 17, 2021, 4 p.m. 3.3 ppb (4) 1.1 ppb (2) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 22.0 ppb (21) 0.16 ppb (3) 9.0 μg/m3 (9) 3.6 μg/m3 (16) 21.0
 
Oct. 17, 2021, 3 p.m. 3.7 ppb (4) 1.2 ppb (2) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 18.0 ppb (17) 0.16 ppb (3) 9.0 μg/m3 (9) 3.9 μg/m3 (17) 17.0
 
Oct. 17, 2021, 2 p.m. 4.0 ppb (4) 1.2 ppb (2) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 16.0 ppb (15) 0.16 ppb (3) 9.0 μg/m3 (9) 4.1 μg/m3 (18) 18.0
 
Oct. 17, 2021, 1 p.m. 3.0 ppb (3) 0.5 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 16.0 ppb (15) 0.15 ppb (2) 10.0 μg/m3 (10) 3.8 μg/m3 (16) 16.0
 
Oct. 17, 2021, noon 2.3 ppb (3) 0.2 ppb (1) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 14.0 ppb (13) 0.14 ppb (2) 8.0 μg/m3 (8) 3.7 μg/m3 (16) 16.0
 
Oct. 17, 2021, 11 a.m. 3.1 ppb (3) 0.2 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 15.0 ppb (14) 0.16 ppb (3) 8.0 μg/m3 (8) 3.7 μg/m3 (16) 16.0
 
Oct. 17, 2021, 10 a.m. 4.1 ppb (4) 0.1 ppb (1) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 16.0 ppb (15) 0.18 ppb (3) 10.0 μg/m3 (10) 4.3 μg/m3 (18) 18.0
 
Oct. 17, 2021, 9 a.m. 4.4 ppb (5) 0.1 ppb (1) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 17.0 ppb (16) 0.19 ppb (3) 12.0 μg/m3 (12) 5.2 μg/m3 (22) 22.0
 
Oct. 17, 2021, 8 a.m. 6.6 ppb (7) 0.3 ppb (1) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 16.0 ppb (15) 0.18 ppb (3) 10.0 μg/m3 (10) 4.1 μg/m3 (18) 18.0
 
Oct. 17, 2021, 7 a.m. 12.5 ppb (12) 0.5 ppb (1) N/A 12.0 ppb (12) N/A 0.0 ppb (0) 11.0 ppb (11) 0.26 ppb (4) 12.0 μg/m3 (12) 5.5 μg/m3 (23) 23.0
 
Oct. 17, 2021, 6 a.m. 19.8 ppb (19) 1.6 ppb (2) N/A 18.0 ppb (17) N/A 0.0 ppb (0) 8.0 ppb (8) 0.41 ppb (5) 18.0 μg/m3 (17) 8.4 μg/m3 (36) 36.0
 
Oct. 17, 2021, 5 a.m. 12.2 ppb (12) 0.6 ppb (1) N/A 12.0 ppb (12) N/A 0.0 ppb (0) 15.0 ppb (14) 0.29 ppb (4) 17.0 μg/m3 (16) 6.5 μg/m3 (28) 28.0
 
Oct. 17, 2021, 4 a.m. 38.0 ppb (36) 12.8 ppb (13) N/A 25.0 ppb (24) N/A 0.0 ppb (0) 6.0 ppb (6) 0.66 ppb (8) 26.0 μg/m3 (25) 13.1 μg/m3 (54) 54.0
 
Oct. 17, 2021, 3 a.m. 15.0 ppb (15) 1.0 ppb (1) N/A 14.0 ppb (14) N/A 0.0 ppb (0) 15.0 ppb (14) N/A 17.0 μg/m3 (16) 7.7 μg/m3 (33) 33.0
 
Oct. 17, 2021, 2 a.m. 9.5 ppb (9) 0.3 ppb (1) N/A 9.0 ppb (9) N/A 0.0 ppb (0) 21.0 ppb (20) N/A 14.0 μg/m3 (13) 4.9 μg/m3 (21) 21.0
 
Oct. 17, 2021, 1 a.m. 11.3 ppb (11) 0.2 ppb (1) N/A 11.0 ppb (11) N/A 0.0 ppb (0) 22.0 ppb (21) 0.26 ppb (4) 13.0 μg/m3 (13) 4.3 μg/m3 (18) 21.0
 
Oct. 17, 2021, midnight 8.4 ppb (8) 0.2 ppb (1) N/A 8.0 ppb (8) N/A 1.0 ppb (2) 24.0 ppb (23) 0.21 ppb (3) 16.0 μg/m3 (15) 4.4 μg/m3 (19) 23.0
 
Oct. 16, 2021, 11 p.m. 4.6 ppb (5) 0.3 ppb (1) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 28.0 ppb (26) 0.18 ppb (3) 11.0 μg/m3 (11) 3.0 μg/m3 (13) 26.0
 
Oct. 16, 2021, 10 p.m. 1.8 ppb (2) 0.3 ppb (1) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 31.0 ppb (29) 0.16 ppb (3) 14.0 μg/m3 (13) 3.4 μg/m3 (15) 29.0
 
Oct. 16, 2021, 9 p.m. 1.9 ppb (2) 0.5 ppb (1) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 31.0 ppb (29) 0.15 ppb (2) 18.0 μg/m3 (17) 3.6 μg/m3 (16) 29.0
 
Oct. 16, 2021, 8 p.m. 4.0 ppb (4) 1.1 ppb (2) N/A 3.0 ppb (3) N/A 3.0 ppb (5) 30.0 ppb (28) 0.15 ppb (2) 21.0 μg/m3 (20) 3.5 μg/m3 (15) 28.0
 
Oct. 16, 2021, 7 p.m. 4.4 ppb (5) 1.3 ppb (2) N/A 3.0 ppb (3) N/A 3.0 ppb (5) 28.0 ppb (26) 0.16 ppb (3) 19.0 μg/m3 (18) 3.3 μg/m3 (14) 26.0
 
Oct. 16, 2021, 6 p.m. 3.0 ppb (3) 1.0 ppb (1) N/A 2.0 ppb (2) N/A 1.0 ppb (2) 27.0 ppb (25) 0.16 ppb (3) 14.0 μg/m3 (13) 3.0 μg/m3 (13) 25.0
 
Oct. 16, 2021, 5 p.m. 6.9 ppb (7) 2.7 ppb (3) N/A 4.0 ppb (4) N/A 4.0 ppb (6) 23.0 ppb (22) 0.16 ppb (3) 16.0 μg/m3 (15) 3.4 μg/m3 (15) 22.0
 
Oct. 16, 2021, 4 p.m. 3.8 ppb (4) 1.4 ppb (2) N/A 2.0 ppb (2) N/A 2.0 ppb (3) 22.0 ppb (21) 0.15 ppb (2) 10.0 μg/m3 (10) 3.1 μg/m3 (13) 21.0
 
Oct. 16, 2021, 3 p.m. 17.2 ppb (17) 7.8 ppb (8) N/A 9.0 ppb (9) N/A 17.0 ppb (25) 14.0 ppb (13) 0.18 ppb (3) 14.0 μg/m3 (13) 3.8 μg/m3 (16) 25.0
 
Oct. 16, 2021, 2 p.m. 9.1 ppb (9) 2.5 ppb (3) N/A 7.0 ppb (7) N/A 1.0 ppb (2) 16.0 ppb (15) 0.19 ppb (3) 11.0 μg/m3 (11) 3.5 μg/m3 (15) 15.0
 
Oct. 16, 2021, 1 p.m. 6.0 ppb (6) 0.8 ppb (1) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 17.0 ppb (16) 0.18 ppb (3) 9.0 μg/m3 (9) 3.1 μg/m3 (13) 16.0
 
Oct. 16, 2021, noon 2.6 ppb (3) 0.3 ppb (1) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 20.0 ppb (19) 0.15 ppb (2) 7.0 μg/m3 (7) 2.6 μg/m3 (11) 19.0
 
Oct. 16, 2021, 11 a.m. 2.5 ppb (3) 0.2 ppb (1) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 20.0 ppb (19) 0.15 ppb (2) 5.0 μg/m3 (5) 2.5 μg/m3 (11) 19.0
 
Oct. 16, 2021, 10 a.m. 5.7 ppb (6) 0.4 ppb (1) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 16.0 ppb (15) 0.19 ppb (3) 5.0 μg/m3 (5) 3.0 μg/m3 (13) 15.0
 
Oct. 16, 2021, 9 a.m. 5.3 ppb (5) 0.5 ppb (1) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 17.0 ppb (16) 0.2 ppb (3) 5.0 μg/m3 (5) 3.0 μg/m3 (13) 16.0
 
Oct. 16, 2021, 8 a.m. 4.2 ppb (4) 0.4 ppb (1) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 17.0 ppb (16) 0.16 ppb (3) 6.0 μg/m3 (6) 3.4 μg/m3 (15) 16.0
 
Oct. 16, 2021, 7 a.m. 2.9 ppb (3) 0.2 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 19.0 ppb (18) 0.15 ppb (2) 6.0 μg/m3 (6) 3.4 μg/m3 (15) 18.0
 
Oct. 16, 2021, 6 a.m. 3.9 ppb (4) 0.3 ppb (1) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 19.0 ppb (18) 0.18 ppb (3) 7.0 μg/m3 (7) 3.4 μg/m3 (15) 18.0
 
Oct. 16, 2021, 5 a.m. 4.0 ppb (4) 0.3 ppb (1) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 19.0 ppb (18) 0.17 ppb (3) 9.0 μg/m3 (9) 3.4 μg/m3 (15) 18.0
 
Oct. 16, 2021, 4 a.m. 5.1 ppb (5) 0.3 ppb (1) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 19.0 ppb (18) 0.17 ppb (3) 9.0 μg/m3 (9) 3.2 μg/m3 (14) 18.0
 
Oct. 16, 2021, 3 a.m. 7.0 ppb (7) 0.5 ppb (1) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 19.0 ppb (18) N/A 11.0 μg/m3 (11) 3.7 μg/m3 (16) 18.0
 
Oct. 16, 2021, 2 a.m. 8.9 ppb (9) 0.5 ppb (1) N/A 8.0 ppb (8) N/A 0.0 ppb (0) 20.0 ppb (19) N/A 15.0 μg/m3 (14) 4.2 μg/m3 (18) 19.0
 
Oct. 16, 2021, 1 a.m. 6.9 ppb (7) 0.3 ppb (1) N/A 7.0 ppb (7) N/A 1.0 ppb (2) 24.0 ppb (23) 0.19 ppb (3) 11.0 μg/m3 (11) 3.8 μg/m3 (16) 23.0
 
Oct. 16, 2021, midnight 6.5 ppb (7) 0.3 ppb (1) N/A 6.0 ppb (6) N/A 1.0 ppb (2) 27.0 ppb (25) 0.18 ppb (3) 13.0 μg/m3 (13) 4.1 μg/m3 (18) 25.0
 
Oct. 15, 2021, 11 p.m. 6.0 ppb (6) 0.5 ppb (1) N/A 5.0 ppb (5) N/A 2.0 ppb (3) 29.0 ppb (27) 0.16 ppb (3) 15.0 μg/m3 (14) 3.7 μg/m3 (16) 27.0
 
Oct. 15, 2021, 10 p.m. 3.9 ppb (4) 0.8 ppb (1) N/A 3.0 ppb (3) N/A 1.0 ppb (2) 32.0 ppb (30) 0.16 ppb (3) 13.0 μg/m3 (13) 3.5 μg/m3 (15) 30.0
 
Oct. 15, 2021, 9 p.m. 3.5 ppb (4) 0.9 ppb (1) N/A 3.0 ppb (3) N/A 1.0 ppb (2) 32.0 ppb (30) 0.16 ppb (3) 12.0 μg/m3 (12) 3.8 μg/m3 (16) 30.0
 
Oct. 15, 2021, 8 p.m. 3.0 ppb (3) 0.9 ppb (1) N/A 2.0 ppb (2) N/A 2.0 ppb (3) 32.0 ppb (30) 0.16 ppb (3) 14.0 μg/m3 (13) 4.2 μg/m3 (18) 30.0
 
Oct. 15, 2021, 7 p.m. 4.0 ppb (4) 1.2 ppb (2) N/A 3.0 ppb (3) N/A 2.0 ppb (3) 29.0 ppb (27) 0.16 ppb (3) 16.0 μg/m3 (15) 5.6 μg/m3 (24) 27.0
 
Oct. 15, 2021, 6 p.m. 3.9 ppb (4) 1.2 ppb (2) N/A 3.0 ppb (3) N/A 1.0 ppb (2) 27.0 ppb (25) 0.16 ppb (3) 15.0 μg/m3 (14) 5.3 μg/m3 (23) 25.0
 
Oct. 15, 2021, 5 p.m. 5.5 ppb (6) 2.1 ppb (2) N/A 3.0 ppb (3) N/A 1.0 ppb (2) 24.0 ppb (23) 0.17 ppb (3) 14.0 μg/m3 (13) 5.4 μg/m3 (23) 23.0
 
Oct. 15, 2021, 4 p.m. 6.2 ppb (6) 2.4 ppb (3) N/A 4.0 ppb (4) N/A 3.0 ppb (5) 21.0 ppb (20) 0.17 ppb (3) 15.0 μg/m3 (14) 5.8 μg/m3 (25) 25.0
 
Oct. 15, 2021, 3 p.m. 12.3 ppb (12) 5.3 ppb (5) N/A 7.0 ppb (7) N/A 8.0 ppb (12) 14.0 ppb (13) 0.17 ppb (3) 16.0 μg/m3 (15) 6.8 μg/m3 (29) 29.0
 
Oct. 15, 2021, 2 p.m. 10.1 ppb (10) 3.7 ppb (4) N/A 6.0 ppb (6) N/A 3.0 ppb (5) 12.0 ppb (12) 0.18 ppb (3) 15.0 μg/m3 (14) 6.1 μg/m3 (26) 26.0
 
Oct. 15, 2021, 1 p.m. 6.4 ppb (7) 1.5 ppb (2) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 12.0 ppb (12) 0.17 ppb (3) 11.0 μg/m3 (11) 5.1 μg/m3 (22) 22.0
 
Oct. 15, 2021, noon 5.5 ppb (6) 1.0 ppb (1) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 14.0 ppb (13) 0.18 ppb (3) 9.0 μg/m3 (9) 4.6 μg/m3 (20) 20.0