ID: 512

AQSQID: 270031002

Site Name: Blaine

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

Updated: Sept. 22, 2021, 9:02 a.m.

Location: Blaine (Airport Rd Neast), MN

Reporting: True, Located: True

Current AQI: 25.0

Blaine (Airport Rd Neast) MN, US: 45.1425, -93.2139

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
Sept. 22, 2021, 7 a.m. 6.1 ppb (6) 0.3 ppb (1) 5.7 ppb (6) 6.0 ppb (6) N/A 1.0 ppb (2) 7.0 ppb (7) 0.17 ppb (3) 9.0 μg/m3 (9) 6.0 μg/m3 (25) 25.0
 
Sept. 22, 2021, 6 a.m. 6.0 ppb (6) 0.5 ppb (1) 4.8 ppb (5) 6.0 ppb (6) N/A 1.0 ppb (2) 9.0 ppb (9) 0.17 ppb (3) 7.0 μg/m3 (7) 4.0 μg/m3 (17) 17.0
 
Sept. 22, 2021, 5 a.m. 5.4 ppb (6) 0.2 ppb (1) 4.8 ppb (5) 5.0 ppb (5) N/A 1.0 ppb (2) 12.0 ppb (12) 0.17 ppb (3) 8.0 μg/m3 (8) 3.0 μg/m3 (13) 13.0
 
Sept. 22, 2021, 4 a.m. 6.0 ppb (6) 0.1 ppb (1) 5.7 ppb (6) 6.0 ppb (6) N/A 1.0 ppb (2) 14.0 ppb (13) 0.17 ppb (3) 9.0 μg/m3 (9) 3.0 μg/m3 (13) 13.0
 
Sept. 22, 2021, 3 a.m. N/A N/A 8.8 ppb (9) N/A N/A 1.0 ppb (2) 13.0 ppb (13) 0.2 ppb (3) 9.0 μg/m3 (9) 6.0 μg/m3 (25) 25.0
 
Sept. 22, 2021, 2 a.m. N/A N/A 5.9 ppb (6) N/A N/A 1.0 ppb (2) 17.0 ppb (16) 0.17 ppb (3) 9.0 μg/m3 (9) 6.0 μg/m3 (25) 25.0
 
Sept. 22, 2021, 1 a.m. N/A N/A 4.2 ppb (4) N/A N/A 1.0 ppb (2) 22.0 ppb (21) 0.14 ppb (2) 6.0 μg/m3 (6) 1.0 μg/m3 (5) 21.0
 
Sept. 22, 2021, midnight 2.2 ppb (3) 0.2 ppb (1) 2.1 ppb (2) 2.0 ppb (2) N/A 1.0 ppb (2) 27.0 ppb (25) 0.12 ppb (2) 6.0 μg/m3 (6) 1.0 μg/m3 (5) 25.0
 
Sept. 21, 2021, 11 p.m. 1.6 ppb (2) 0.3 ppb (1) 1.4 ppb (2) 1.0 ppb (1) N/A 1.0 ppb (2) 29.0 ppb (27) 0.1 ppb (2) 4.0 μg/m3 (4) 2.0 μg/m3 (9) 27.0
 
Sept. 21, 2021, 10 p.m. 2.0 ppb (2) 0.6 ppb (1) 1.9 ppb (2) 1.0 ppb (1) N/A 1.0 ppb (2) 29.0 ppb (27) 0.1 ppb (2) 34.0 μg/m3 (32) 2.0 μg/m3 (9) 32.0
 
Sept. 21, 2021, 9 p.m. 1.7 ppb (2) 0.6 ppb (1) 1.6 ppb (2) 1.0 ppb (1) N/A 1.0 ppb (2) 30.0 ppb (28) 0.12 ppb (2) 8.0 μg/m3 (8) 0.0 μg/m3 (0) 28.0
 
Sept. 21, 2021, 8 p.m. 2.2 ppb (3) 0.8 ppb (1) 1.9 ppb (2) 1.0 ppb (1) N/A 1.0 ppb (2) 29.0 ppb (27) 0.11 ppb (2) 8.0 μg/m3 (8) 0.0 μg/m3 (0) 27.0
 
Sept. 21, 2021, 7 p.m. 2.8 ppb (3) 1.1 ppb (2) 1.8 ppb (2) 2.0 ppb (2) N/A 1.0 ppb (2) 29.0 ppb (27) 0.1 ppb (2) 9.0 μg/m3 (9) 0.0 μg/m3 (0) 27.0
 
Sept. 21, 2021, 6 p.m. 2.7 ppb (3) 1.1 ppb (2) 2.1 ppb (2) 2.0 ppb (2) N/A 1.0 ppb (2) 28.0 ppb (26) 0.1 ppb (2) 9.0 μg/m3 (9) 1.0 μg/m3 (5) 26.0
 
Sept. 21, 2021, 5 p.m. 2.6 ppb (3) 0.9 ppb (1) 2.3 ppb (3) 2.0 ppb (2) N/A 1.0 ppb (2) 27.0 ppb (25) 0.1 ppb (2) 8.0 μg/m3 (8) 5.0 μg/m3 (21) 25.0
 
Sept. 21, 2021, 4 p.m. 2.6 ppb (3) 1.1 ppb (2) 2.4 ppb (3) 2.0 ppb (2) N/A 1.0 ppb (2) 26.0 ppb (25) 0.1 ppb (2) 14.0 μg/m3 (13) 8.0 μg/m3 (34) 34.0
 
Sept. 21, 2021, 3 p.m. 3.6 ppb (4) 1.5 ppb (2) 3.3 ppb (4) 2.0 ppb (2) N/A 1.0 ppb (2) 21.0 ppb (20) 0.1 ppb (2) 11.0 μg/m3 (11) 6.0 μg/m3 (25) 25.0
 
Sept. 21, 2021, 2 p.m. 5.6 ppb (6) 2.2 ppb (3) 4.7 ppb (5) 3.0 ppb (3) N/A 1.0 ppb (2) 17.0 ppb (16) 0.11 ppb (2) 14.0 μg/m3 (13) 5.0 μg/m3 (21) 21.0
 
Sept. 21, 2021, 1 p.m. 10.0 ppb (10) 3.4 ppb (4) 8.6 ppb (9) 7.0 ppb (7) N/A 1.0 ppb (2) 11.0 ppb (11) 0.16 ppb (3) 13.0 μg/m3 (13) 5.0 μg/m3 (21) 21.0
 
Sept. 21, 2021, noon 9.1 ppb (9) 1.1 ppb (2) 7.6 ppb (8) 8.0 ppb (8) N/A N/A 9.0 ppb (9) 0.15 ppb (2) 9.0 μg/m3 (9) 5.0 μg/m3 (21) 21.0
 
Sept. 21, 2021, 11 a.m. 4.4 ppb (5) 0.6 ppb (1) 3.5 ppb (4) 4.0 ppb (4) N/A N/A 15.0 ppb (14) 0.13 ppb (2) 12.0 μg/m3 (12) 3.0 μg/m3 (13) 14.0
 
Sept. 21, 2021, 10 a.m. 2.4 ppb (3) 0.0 ppb (0) 2.0 ppb (2) 3.0 ppb (3) N/A 1.0 ppb (2) 17.0 ppb (16) N/A N/A 5.0 μg/m3 (21) 21.0
 
Sept. 21, 2021, 9 a.m. 3.0 ppb (3) 0.1 ppb (1) N/A 3.0 ppb (3) N/A 1.0 ppb (2) 17.0 ppb (16) 0.09 ppb (2) 10.0 μg/m3 (10) 7.0 μg/m3 (30) 30.0
 
Sept. 21, 2021, 8 a.m. 2.3 ppb (3) 0.2 ppb (1) N/A 2.0 ppb (2) N/A 1.0 ppb (2) 17.0 ppb (16) 0.09 ppb (2) 13.0 μg/m3 (13) 3.0 μg/m3 (13) 16.0
 
Sept. 21, 2021, 7 a.m. 1.6 ppb (2) 0.1 ppb (1) N/A 2.0 ppb (2) N/A 1.0 ppb (2) 18.0 ppb (17) 0.09 ppb (2) 9.0 μg/m3 (9) 3.0 μg/m3 (13) 17.0
 
Sept. 21, 2021, 6 a.m. 1.1 ppb (2) 0.2 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 18.0 ppb (17) 0.09 ppb (2) 8.0 μg/m3 (8) 3.0 μg/m3 (13) 17.0
 
Sept. 21, 2021, 5 a.m. 1.1 ppb (2) 0.2 ppb (1) 0.9 ppb (1) 1.0 ppb (1) N/A 1.0 ppb (2) 20.0 ppb (19) 0.08 ppb (2) 10.0 μg/m3 (10) 3.0 μg/m3 (13) 19.0
 
Sept. 21, 2021, 4 a.m. 0.6 ppb (1) 0.0 ppb (0) 0.6 ppb (1) 1.0 ppb (1) N/A 1.0 ppb (2) 21.0 ppb (20) 0.08 ppb (2) 9.0 μg/m3 (9) 3.0 μg/m3 (13) 20.0
 
Sept. 21, 2021, 3 a.m. 0.8 ppb (1) 0.2 ppb (1) 0.7 ppb (1) 1.0 ppb (1) N/A 1.0 ppb (2) 21.0 ppb (20) 0.08 ppb (2) 15.0 μg/m3 (14) 4.0 μg/m3 (17) 20.0
 
Sept. 21, 2021, 2 a.m. 1.4 ppb (2) 0.2 ppb (1) 1.1 ppb (2) 1.0 ppb (1) N/A 1.0 ppb (2) 25.0 ppb (24) 0.11 ppb (2) 12.0 μg/m3 (12) 2.0 μg/m3 (9) 24.0
 
Sept. 21, 2021, 1 a.m. 2.3 ppb (3) 0.1 ppb (1) 2.1 ppb (2) 2.0 ppb (2) N/A 1.0 ppb (2) 27.0 ppb (25) 0.12 ppb (2) 15.0 μg/m3 (14) 3.0 μg/m3 (13) 25.0
 
Sept. 21, 2021, midnight 2.1 ppb (2) 0.2 ppb (1) 2.0 ppb (2) 2.0 ppb (2) N/A 1.0 ppb (2) 26.0 ppb (25) 0.11 ppb (2) 17.0 μg/m3 (16) 4.0 μg/m3 (17) 25.0
 
Sept. 20, 2021, 11 p.m. 1.8 ppb (2) 0.2 ppb (1) 1.6 ppb (2) 2.0 ppb (2) N/A 1.0 ppb (2) 25.0 ppb (24) 0.1 ppb (2) 6.0 μg/m3 (6) 2.0 μg/m3 (9) 24.0
 
Sept. 20, 2021, 10 p.m. 2.3 ppb (3) 0.4 ppb (1) 1.8 ppb (2) 2.0 ppb (2) N/A 1.0 ppb (2) 23.0 ppb (22) 0.09 ppb (2) -3.0 μg/m3 (0) 1.0 μg/m3 (5) 22.0
 
Sept. 20, 2021, 9 p.m. 3.3 ppb (4) 0.2 ppb (1) 2.8 ppb (3) 3.0 ppb (3) N/A 1.0 ppb (2) 22.0 ppb (21) 0.1 ppb (2) -4.0 μg/m3 (0) -1.0 μg/m3 (0) 21.0
 
Sept. 20, 2021, 8 p.m. 5.2 ppb (5) 0.4 ppb (1) 4.3 ppb (5) 5.0 ppb (5) N/A 1.0 ppb (2) 25.0 ppb (24) 0.08 ppb (2) 2.0 μg/m3 (2) -1.0 μg/m3 (0) 24.0
 
Sept. 20, 2021, 7 p.m. 7.2 ppb (7) 0.7 ppb (1) 6.6 ppb (7) 7.0 ppb (7) N/A 1.0 ppb (2) 19.0 ppb (18) 0.07 ppb (2) 7.0 μg/m3 (7) 3.0 μg/m3 (13) 18.0
 
Sept. 20, 2021, 6 p.m. 10.0 ppb (10) 1.0 ppb (1) 8.7 ppb (9) 9.0 ppb (9) N/A 1.0 ppb (2) 15.0 ppb (14) 0.09 ppb (2) 11.0 μg/m3 (11) 3.0 μg/m3 (13) 14.0
 
Sept. 20, 2021, 5 p.m. 7.9 ppb (8) 0.6 ppb (1) 7.3 ppb (7) 7.0 ppb (7) N/A 1.0 ppb (2) 19.0 ppb (18) 0.07 ppb (2) 15.0 μg/m3 (14) 0.0 μg/m3 (0) 18.0
 
Sept. 20, 2021, 4 p.m. 6.2 ppb (6) 0.9 ppb (1) 5.6 ppb (6) 5.0 ppb (5) N/A 1.0 ppb (2) 26.0 ppb (25) 0.06 ppb (2) 11.0 μg/m3 (11) 0.0 μg/m3 (0) 25.0
 
Sept. 20, 2021, 3 p.m. 7.7 ppb (8) 1.0 ppb (1) 7.1 ppb (7) 7.0 ppb (7) N/A 1.0 ppb (2) 22.0 ppb (21) 0.07 ppb (2) 12.0 μg/m3 (12) 2.0 μg/m3 (9) 21.0
 
Sept. 20, 2021, 2 p.m. 6.9 ppb (7) 0.6 ppb (1) 6.5 ppb (7) 6.0 ppb (6) N/A 1.0 ppb (2) 24.0 ppb (23) 0.07 ppb (2) 15.0 μg/m3 (14) 1.0 μg/m3 (5) 23.0
 
Sept. 20, 2021, 1 p.m. 7.9 ppb (8) 0.8 ppb (1) 7.0 ppb (7) 7.0 ppb (7) N/A 1.0 ppb (2) 25.0 ppb (24) 0.08 ppb (2) 17.0 μg/m3 (16) 1.0 μg/m3 (5) 24.0
 
Sept. 20, 2021, noon 6.0 ppb (6) 0.4 ppb (1) 5.3 ppb (5) 6.0 ppb (6) N/A N/A 28.0 ppb (26) 0.07 ppb (2) 16.0 μg/m3 (15) 1.0 μg/m3 (5) 26.0
 
Sept. 20, 2021, 11 a.m. 5.2 ppb (5) 0.2 ppb (1) 4.5 ppb (5) 5.0 ppb (5) N/A N/A 30.0 ppb (28) 0.07 ppb (2) 12.0 μg/m3 (12) 2.0 μg/m3 (9) 28.0
 
Sept. 20, 2021, 10 a.m. 2.6 ppb (3) 0.2 ppb (1) 2.2 ppb (3) 2.0 ppb (2) N/A 1.0 ppb (2) 34.0 ppb (32) N/A 15.0 μg/m3 (14) 3.0 μg/m3 (13) 32.0
 
Sept. 20, 2021, 9 a.m. 2.2 ppb (3) 0.2 ppb (1) N/A 2.0 ppb (2) N/A 1.0 ppb (2) 37.0 ppb (35) 0.06 ppb (2) 18.0 μg/m3 (17) 2.0 μg/m3 (9) 35.0
 
Sept. 20, 2021, 8 a.m. 2.0 ppb (2) 0.2 ppb (1) N/A 2.0 ppb (2) N/A 1.0 ppb (2) 39.0 ppb (37) 0.06 ppb (2) 13.0 μg/m3 (13) 2.0 μg/m3 (9) 37.0
 
Sept. 20, 2021, 7 a.m. 2.2 ppb (3) 0.0 ppb (0) 2.2 ppb (3) 2.0 ppb (2) N/A 1.0 ppb (2) 41.0 ppb (38) 0.06 ppb (2) 22.0 μg/m3 (21) 5.0 μg/m3 (21) 38.0
 
Sept. 20, 2021, 6 a.m. 1.7 ppb (2) 0.0 ppb (0) 1.9 ppb (2) 2.0 ppb (2) N/A 1.0 ppb (2) 42.0 ppb (39) 0.06 ppb (2) 24.0 μg/m3 (23) 6.0 μg/m3 (25) 39.0
 
Sept. 20, 2021, 5 a.m. 2.3 ppb (3) 0.1 ppb (1) 2.4 ppb (3) 2.0 ppb (2) N/A 1.0 ppb (2) 43.0 ppb (40) 0.06 ppb (2) 26.0 μg/m3 (25) 9.0 μg/m3 (38) 40.0
 
Sept. 20, 2021, 4 a.m. 2.3 ppb (3) 0.0 ppb (0) 2.5 ppb (3) 2.0 ppb (2) N/A 1.0 ppb (2) 45.0 ppb (42) 0.06 ppb (2) 32.0 μg/m3 (30) 8.0 μg/m3 (34) 42.0
 
Sept. 20, 2021, 3 a.m. 2.3 ppb (3) 0.1 ppb (1) 2.5 ppb (3) 2.0 ppb (2) N/A 1.0 ppb (2) 46.0 ppb (43) 0.06 ppb (2) 31.0 μg/m3 (29) 6.0 μg/m3 (25) 43.0
 
Sept. 20, 2021, 2 a.m. 2.3 ppb (3) 0.1 ppb (1) 2.3 ppb (3) 2.0 ppb (2) N/A 1.0 ppb (2) 46.0 ppb (43) 0.07 ppb (2) 30.0 μg/m3 (28) 7.0 μg/m3 (30) 43.0
 
Sept. 20, 2021, 1 a.m. 2.8 ppb (3) 0.1 ppb (1) 2.7 ppb (3) 3.0 ppb (3) N/A 1.0 ppb (2) 45.0 ppb (42) 0.08 ppb (2) 34.0 μg/m3 (32) 11.0 μg/m3 (46) 46.0
 
Sept. 20, 2021, midnight 2.8 ppb (3) 0.1 ppb (1) 2.8 ppb (3) 3.0 ppb (3) N/A 1.0 ppb (2) 47.0 ppb (44) 0.09 ppb (2) 27.0 μg/m3 (25) 6.0 μg/m3 (25) 44.0
 
Sept. 19, 2021, 11 p.m. 2.1 ppb (2) 0.0 ppb (0) 2.4 ppb (3) 2.0 ppb (2) N/A 1.0 ppb (2) 51.0 ppb (48) 0.08 ppb (2) 36.0 μg/m3 (34) 7.0 μg/m3 (30) 48.0
 
Sept. 19, 2021, 10 p.m. 1.8 ppb (2) 0.1 ppb (1) 2.0 ppb (2) 2.0 ppb (2) N/A 1.0 ppb (2) 53.0 ppb (50) 0.08 ppb (2) 33.0 μg/m3 (31) 6.0 μg/m3 (25) 50.0
 
Sept. 19, 2021, 9 p.m. 1.6 ppb (2) 0.2 ppb (1) 1.5 ppb (2) 2.0 ppb (2) N/A 1.0 ppb (2) 54.0 ppb (50) 0.08 ppb (2) 38.0 μg/m3 (36) 7.0 μg/m3 (30) 50.0
 
Sept. 19, 2021, 8 p.m. 1.9 ppb (2) 0.2 ppb (1) 1.8 ppb (2) 2.0 ppb (2) N/A 1.0 ppb (2) 54.0 ppb (50) 0.08 ppb (2) 33.0 μg/m3 (31) 2.0 μg/m3 (9) 50.0
 
Sept. 19, 2021, 7 p.m. 1.9 ppb (2) 0.2 ppb (1) 1.8 ppb (2) 2.0 ppb (2) N/A 1.0 ppb (2) 53.0 ppb (50) 0.08 ppb (2) 37.0 μg/m3 (35) 3.0 μg/m3 (13) 50.0
 
Sept. 19, 2021, 6 p.m. 2.0 ppb (2) 0.1 ppb (1) 1.9 ppb (2) 2.0 ppb (2) N/A 1.0 ppb (2) 51.0 ppb (48) 0.09 ppb (2) 31.0 μg/m3 (29) 4.0 μg/m3 (17) 48.0
 
Sept. 19, 2021, 5 p.m. 2.4 ppb (3) 0.1 ppb (1) 2.2 ppb (3) 2.0 ppb (2) N/A 1.0 ppb (2) 50.0 ppb (47) 0.09 ppb (2) 25.0 μg/m3 (24) 5.0 μg/m3 (21) 47.0
 
Sept. 19, 2021, 4 p.m. 2.8 ppb (3) 0.4 ppb (1) 2.4 ppb (3) 3.0 ppb (3) N/A 1.0 ppb (2) 49.0 ppb (46) 0.09 ppb (2) 26.0 μg/m3 (25) 6.0 μg/m3 (25) 46.0
 
Sept. 19, 2021, 3 p.m. 3.4 ppb (4) 0.4 ppb (1) 2.9 ppb (3) 3.0 ppb (3) N/A 1.0 ppb (2) 47.0 ppb (44) 0.09 ppb (2) 24.0 μg/m3 (23) 6.0 μg/m3 (25) 44.0
 
Sept. 19, 2021, 2 p.m. 4.6 ppb (5) 0.5 ppb (1) 4.0 ppb (4) 4.0 ppb (4) N/A 1.0 ppb (2) 38.0 ppb (36) 0.1 ppb (2) 28.0 μg/m3 (26) 8.0 μg/m3 (34) 36.0
 
Sept. 19, 2021, 1 p.m. 4.1 ppb (4) 0.3 ppb (1) 3.7 ppb (4) 4.0 ppb (4) N/A 1.0 ppb (2) 33.0 ppb (31) 0.09 ppb (2) 25.0 μg/m3 (24) 9.0 μg/m3 (38) 38.0
 
Sept. 19, 2021, noon 4.7 ppb (5) 0.1 ppb (1) 4.0 ppb (4) 5.0 ppb (5) N/A N/A 28.0 ppb (26) 0.09 ppb (2) 22.0 μg/m3 (21) 10.0 μg/m3 (42) 42.0
 
Sept. 19, 2021, 11 a.m. 3.3 ppb (4) 0.2 ppb (1) 2.8 ppb (3) 3.0 ppb (3) N/A N/A 32.0 ppb (30) 0.09 ppb (2) 24.0 μg/m3 (23) 8.0 μg/m3 (34) 34.0
 
Sept. 19, 2021, 10 a.m. 3.0 ppb (3) 0.1 ppb (1) 2.6 ppb (3) 3.0 ppb (3) N/A 1.0 ppb (2) 34.0 ppb (32) N/A 22.0 μg/m3 (21) 5.0 μg/m3 (21) 32.0
 
Sept. 19, 2021, 9 a.m. 2.6 ppb (3) 0.1 ppb (1) N/A 2.0 ppb (2) N/A 1.0 ppb (2) 37.0 ppb (35) 0.08 ppb (2) 23.0 μg/m3 (22) 6.0 μg/m3 (25) 35.0
 
Sept. 19, 2021, 8 a.m. 2.6 ppb (3) 0.0 ppb (0) N/A 3.0 ppb (3) N/A 1.0 ppb (2) 39.0 ppb (37) 0.08 ppb (2) 27.0 μg/m3 (25) 6.0 μg/m3 (25) 37.0
 
Sept. 19, 2021, 7 a.m. 3.1 ppb (3) 0.2 ppb (1) 2.8 ppb (3) 3.0 ppb (3) N/A 1.0 ppb (2) 40.0 ppb (38) 0.08 ppb (2) 25.0 μg/m3 (24) 8.0 μg/m3 (34) 38.0
 
Sept. 19, 2021, 6 a.m. 4.8 ppb (5) 0.2 ppb (1) 3.4 ppb (4) 5.0 ppb (5) N/A 1.0 ppb (2) N/A 0.09 ppb (2) 27.0 μg/m3 (25) 8.0 μg/m3 (34) 34.0
 
Sept. 19, 2021, 5 a.m. 2.7 ppb (3) 0.1 ppb (1) 2.7 ppb (3) 3.0 ppb (3) N/A 1.0 ppb (2) 40.0 ppb (38) 0.1 ppb (2) 32.0 μg/m3 (30) 5.0 μg/m3 (21) 38.0
 
Sept. 19, 2021, 4 a.m. 3.1 ppb (3) 0.1 ppb (1) 3.0 ppb (3) 3.0 ppb (3) N/A 1.0 ppb (2) 40.0 ppb (38) 0.11 ppb (2) 32.0 μg/m3 (30) 7.0 μg/m3 (30) 38.0
 
Sept. 19, 2021, 3 a.m. 3.5 ppb (4) 0.2 ppb (1) 3.3 ppb (4) 3.0 ppb (3) N/A 1.0 ppb (2) 39.0 ppb (37) 0.12 ppb (2) 38.0 μg/m3 (36) 4.0 μg/m3 (17) 37.0
 
Sept. 19, 2021, 2 a.m. 4.1 ppb (4) 0.0 ppb (0) 4.0 ppb (4) 4.0 ppb (4) N/A 1.0 ppb (2) 37.0 ppb (35) 0.14 ppb (2) 39.0 μg/m3 (37) 4.0 μg/m3 (17) 37.0
 
Sept. 19, 2021, 1 a.m. 5.3 ppb (5) 0.0 ppb (0) 5.1 ppb (5) 5.0 ppb (5) N/A 1.0 ppb (2) 37.0 ppb (35) 0.16 ppb (3) 36.0 μg/m3 (34) 3.0 μg/m3 (13) 35.0
 
Sept. 19, 2021, midnight 4.1 ppb (4) 0.1 ppb (1) 3.8 ppb (4) 4.0 ppb (4) N/A 1.0 ppb (2) 41.0 ppb (38) 0.17 ppb (3) 22.0 μg/m3 (21) 0.0 μg/m3 (0) 38.0
 
Sept. 18, 2021, 11 p.m. 3.2 ppb (4) 0.1 ppb (1) 3.0 ppb (3) 3.0 ppb (3) N/A 1.0 ppb (2) 43.0 ppb (40) 0.15 ppb (2) 23.0 μg/m3 (22) 2.0 μg/m3 (9) 40.0
 
Sept. 18, 2021, 10 p.m. 3.2 ppb (4) 0.5 ppb (1) 2.9 ppb (3) 3.0 ppb (3) N/A 1.0 ppb (2) 45.0 ppb (42) 0.13 ppb (2) 22.0 μg/m3 (21) 4.0 μg/m3 (17) 42.0
 
Sept. 18, 2021, 9 p.m. 3.2 ppb (4) 0.4 ppb (1) 2.9 ppb (3) 3.0 ppb (3) N/A 1.0 ppb (2) 47.0 ppb (44) 0.12 ppb (2) N/A 4.0 μg/m3 (17) 44.0
 
Sept. 18, 2021, 8 p.m. 2.3 ppb (3) 0.3 ppb (1) 2.2 ppb (3) 2.0 ppb (2) N/A 1.0 ppb (2) 47.0 ppb (44) 0.13 ppb (2) 18.0 μg/m3 (17) 1.0 μg/m3 (5) 44.0
 
Sept. 18, 2021, 7 p.m. 2.3 ppb (3) 0.1 ppb (1) 2.3 ppb (3) 2.0 ppb (2) N/A 1.0 ppb (2) 46.0 ppb (43) 0.13 ppb (2) 21.0 μg/m3 (20) 1.0 μg/m3 (5) 43.0
 
Sept. 18, 2021, 6 p.m. 2.5 ppb (3) 0.3 ppb (1) 2.5 ppb (3) 2.0 ppb (2) N/A 1.0 ppb (2) 45.0 ppb (42) 0.13 ppb (2) 13.0 μg/m3 (13) 0.0 μg/m3 (0) 42.0
 
Sept. 18, 2021, 5 p.m. 3.2 ppb (4) 0.4 ppb (1) 3.0 ppb (3) 3.0 ppb (3) N/A 1.0 ppb (2) 41.0 ppb (38) 0.13 ppb (2) 10.0 μg/m3 (10) 1.0 μg/m3 (5) 38.0
 
Sept. 18, 2021, 4 p.m. 4.0 ppb (4) 0.6 ppb (1) 3.6 ppb (4) 3.0 ppb (3) N/A 1.0 ppb (2) 38.0 ppb (36) 0.13 ppb (2) 14.0 μg/m3 (13) 2.0 μg/m3 (9) 36.0
 
Sept. 18, 2021, 3 p.m. 13.1 ppb (13) 3.2 ppb (4) 11.9 ppb (12) 10.0 ppb (10) N/A 1.0 ppb (2) 27.0 ppb (25) 0.17 ppb (3) 15.0 μg/m3 (14) 5.0 μg/m3 (21) 25.0
 
Sept. 18, 2021, 2 p.m. 19.8 ppb (19) 6.3 ppb (6) 18.2 ppb (18) 13.0 ppb (13) N/A 1.0 ppb (2) 17.0 ppb (16) 0.21 ppb (3) 18.0 μg/m3 (17) 9.0 μg/m3 (38) 38.0
 
Sept. 18, 2021, 1 p.m. 26.4 ppb (25) 13.7 ppb (13) 28.4 ppb (27) 13.0 ppb (13) N/A 1.0 ppb (2) 7.0 ppb (7) 0.36 ppb (5) 18.0 μg/m3 (17) 13.0 μg/m3 (53) 53.0
 
Sept. 18, 2021, noon 26.9 ppb (26) 17.9 ppb (17) 31.9 ppb (31) 9.0 ppb (9) N/A N/A 2.0 ppb (2) 0.46 ppb (6) 16.0 μg/m3 (15) 15.0 μg/m3 (58) 58.0
 
Sept. 18, 2021, 11 a.m. 20.5 ppb (20) 13.6 ppb (13) 24.4 ppb (24) 7.0 ppb (7) N/A N/A 2.0 ppb (2) 0.47 ppb (6) 19.0 μg/m3 (18) 15.0 μg/m3 (58) 58.0
 
Sept. 18, 2021, 10 a.m. 21.3 ppb (21) 13.0 ppb (13) 21.1 ppb (20) 8.0 ppb (8) N/A 1.0 ppb (2) 2.0 ppb (2) N/A 18.0 μg/m3 (17) 19.0 μg/m3 (66) 66.0
 
Sept. 18, 2021, 9 a.m. 23.7 ppb (23) 13.8 ppb (14) N/A 10.0 ppb (10) N/A 1.0 ppb (2) 2.0 ppb (2) 0.51 ppb (6) 17.0 μg/m3 (16) 16.0 μg/m3 (60) 60.0
 
Sept. 18, 2021, 8 a.m. 23.7 ppb (23) 11.9 ppb (12) N/A 12.0 ppb (12) N/A 1.0 ppb (2) 2.0 ppb (2) 0.51 ppb (6) 19.0 μg/m3 (18) 18.0 μg/m3 (64) 64.0
 
Sept. 18, 2021, 7 a.m. 27.6 ppb (27) 12.5 ppb (12) 28.4 ppb (27) 15.0 ppb (15) N/A 1.0 ppb (2) 2.0 ppb (2) 0.54 ppb (6) 23.0 μg/m3 (22) 13.0 μg/m3 (53) 53.0
 
Sept. 18, 2021, 6 a.m. 26.0 ppb (25) 9.3 ppb (9) 26.0 ppb (25) 17.0 ppb (17) N/A 1.0 ppb (2) 2.0 ppb (2) 0.53 ppb (6) 24.0 μg/m3 (23) 20.0 μg/m3 (68) 68.0
 
Sept. 18, 2021, 5 a.m. 24.0 ppb (23) 7.7 ppb (8) 25.2 ppb (24) 16.0 ppb (16) N/A 1.0 ppb (2) 2.0 ppb (2) 0.55 ppb (7) 22.0 μg/m3 (21) 18.0 μg/m3 (64) 64.0
 
Sept. 18, 2021, 4 a.m. 31.3 ppb (30) 12.7 ppb (12) 31.2 ppb (30) 19.0 ppb (18) N/A 1.0 ppb (2) 2.0 ppb (2) 0.6 ppb (7) 20.0 μg/m3 (19) 15.0 μg/m3 (58) 58.0
 
Sept. 18, 2021, 3 a.m. 31.1 ppb (30) 11.2 ppb (11) 31.8 ppb (30) 20.0 ppb (19) N/A 1.0 ppb (2) 2.0 ppb (2) 0.55 ppb (7) 18.0 μg/m3 (17) 9.0 μg/m3 (38) 38.0
 
Sept. 18, 2021, 2 a.m. 18.7 ppb (18) 0.5 ppb (1) 19.4 ppb (19) 18.0 ppb (17) N/A 1.0 ppb (2) 7.0 ppb (7) 0.37 ppb (5) 12.0 μg/m3 (12) 5.0 μg/m3 (21) 21.0
 
Sept. 18, 2021, 1 a.m. 10.7 ppb (11) 0.4 ppb (1) 12.0 ppb (12) 10.0 ppb (10) N/A 1.0 ppb (2) 16.0 ppb (15) 0.26 ppb (4) 12.0 μg/m3 (12) 5.0 μg/m3 (21) 21.0
 
Sept. 18, 2021, midnight 6.5 ppb (7) 0.3 ppb (1) 5.8 ppb (6) 6.0 ppb (6) N/A 1.0 ppb (2) 31.0 ppb (29) 0.17 ppb (3) 7.0 μg/m3 (7) 4.0 μg/m3 (17) 29.0
 
Sept. 17, 2021, 11 p.m. 3.2 ppb (4) 0.2 ppb (1) 3.2 ppb (4) 3.0 ppb (3) N/A 1.0 ppb (2) 39.0 ppb (37) 0.14 ppb (2) 9.0 μg/m3 (9) 2.0 μg/m3 (9) 37.0
 
Sept. 17, 2021, 10 p.m. 2.6 ppb (3) 0.3 ppb (1) 2.7 ppb (3) 2.0 ppb (2) N/A 1.0 ppb (2) 42.0 ppb (39) 0.14 ppb (2) 11.0 μg/m3 (11) 1.0 μg/m3 (5) 39.0
 
Sept. 17, 2021, 9 p.m. 2.6 ppb (3) 0.6 ppb (1) 2.5 ppb (3) 2.0 ppb (2) N/A 1.0 ppb (2) 43.0 ppb (40) 0.14 ppb (2) 13.0 μg/m3 (13) 1.0 μg/m3 (5) 40.0
 
Sept. 17, 2021, 8 p.m. 3.3 ppb (4) 0.7 ppb (1) 3.1 ppb (3) 3.0 ppb (3) N/A 1.0 ppb (2) 42.0 ppb (39) 0.14 ppb (2) 11.0 μg/m3 (11) 0.0 μg/m3 (0) 39.0
 
Sept. 17, 2021, 7 p.m. 3.9 ppb (4) 0.8 ppb (1) 3.6 ppb (4) 3.0 ppb (3) N/A 2.0 ppb (3) 40.0 ppb (38) 0.14 ppb (2) 16.0 μg/m3 (15) 0.0 μg/m3 (0) 38.0
 
Sept. 17, 2021, 6 p.m. 3.2 ppb (4) 0.6 ppb (1) 3.1 ppb (3) 3.0 ppb (3) N/A 2.0 ppb (3) 40.0 ppb (38) 0.12 ppb (2) 17.0 μg/m3 (16) 2.0 μg/m3 (9) 38.0
 
Sept. 17, 2021, 5 p.m. 4.3 ppb (5) 1.0 ppb (1) 3.8 ppb (4) 3.0 ppb (3) N/A 1.0 ppb (2) 33.0 ppb (31) 0.11 ppb (2) 18.0 μg/m3 (17) 5.0 μg/m3 (21) 31.0
 
Sept. 17, 2021, 4 p.m. 4.0 ppb (4) 0.9 ppb (1) 3.7 ppb (4) 3.0 ppb (3) N/A 1.0 ppb (2) 29.0 ppb (27) 0.1 ppb (2) 12.0 μg/m3 (12) 5.0 μg/m3 (21) 27.0
 
Sept. 17, 2021, 3 p.m. 5.6 ppb (6) 1.3 ppb (2) 5.0 ppb (5) 4.0 ppb (4) N/A 1.0 ppb (2) 26.0 ppb (25) 0.1 ppb (2) 16.0 μg/m3 (15) 4.0 μg/m3 (17) 25.0
 
Sept. 17, 2021, 2 p.m. 8.2 ppb (8) 1.4 ppb (2) 7.4 ppb (7) 7.0 ppb (7) N/A 1.0 ppb (2) 23.0 ppb (22) 0.12 ppb (2) 11.0 μg/m3 (11) 5.0 μg/m3 (21) 22.0
 
Sept. 17, 2021, 1 p.m. 8.8 ppb (9) 0.7 ppb (1) 7.7 ppb (8) 8.0 ppb (8) N/A 1.0 ppb (2) 20.0 ppb (19) 0.14 ppb (2) 17.0 μg/m3 (16) 4.0 μg/m3 (17) 19.0
 
Sept. 17, 2021, noon 6.3 ppb (6) 0.5 ppb (1) 5.3 ppb (5) 6.0 ppb (6) N/A N/A 23.0 ppb (22) 0.16 ppb (3) 10.0 μg/m3 (10) 4.0 μg/m3 (17) 22.0
 
Sept. 17, 2021, 11 a.m. 1.5 ppb (2) 0.1 ppb (1) 1.2 ppb (2) 1.0 ppb (1) N/A N/A 33.0 ppb (31) 0.09 ppb (2) 6.0 μg/m3 (6) 2.0 μg/m3 (9) 31.0
 
Sept. 17, 2021, 10 a.m. 1.3 ppb (2) 0.0 ppb (0) 1.0 ppb (1) 1.0 ppb (1) N/A 1.0 ppb (2) 37.0 ppb (35) N/A 4.0 μg/m3 (4) 3.0 μg/m3 (13) 35.0
 
Sept. 17, 2021, 9 a.m. 1.1 ppb (2) 0.1 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 40.0 ppb (38) 0.07 ppb (2) 2.0 μg/m3 (2) 0.0 μg/m3 (0) 38.0
 
Sept. 17, 2021, 8 a.m. 1.8 ppb (2) 0.3 ppb (1) N/A 2.0 ppb (2) N/A 1.0 ppb (2) 32.0 ppb (30) 0.06 ppb (2) 2.0 μg/m3 (2) 4.0 μg/m3 (17) 30.0
 
Sept. 17, 2021, 7 a.m. 3.1 ppb (3) 0.1 ppb (1) 3.1 ppb (3) 3.0 ppb (3) N/A 1.0 ppb (2) 40.0 ppb (38) 0.08 ppb (2) 27.0 μg/m3 (25) 6.0 μg/m3 (25) 38.0
 
Sept. 17, 2021, 6 a.m. 2.2 ppb (3) 0.1 ppb (1) 2.3 ppb (3) 2.0 ppb (2) N/A 1.0 ppb (2) 44.0 ppb (41) 0.08 ppb (2) 32.0 μg/m3 (30) 5.0 μg/m3 (21) 41.0
 
Sept. 17, 2021, 5 a.m. 3.4 ppb (4) 0.1 ppb (1) 3.3 ppb (4) 3.0 ppb (3) N/A 1.0 ppb (2) 45.0 ppb (42) 0.09 ppb (2) 29.0 μg/m3 (27) 4.0 μg/m3 (17) 42.0
 
Sept. 17, 2021, 4 a.m. 3.0 ppb (3) 0.1 ppb (1) 3.1 ppb (3) 3.0 ppb (3) N/A 1.0 ppb (2) 48.0 ppb (45) 0.07 ppb (2) 30.0 μg/m3 (28) 4.0 μg/m3 (17) 45.0
 
Sept. 17, 2021, 3 a.m. 2.9 ppb (3) 0.1 ppb (1) 3.0 ppb (3) 3.0 ppb (3) N/A 1.0 ppb (2) 49.0 ppb (46) 0.08 ppb (2) 35.0 μg/m3 (33) 5.0 μg/m3 (21) 46.0
 
Sept. 17, 2021, 2 a.m. 2.7 ppb (3) 0.0 ppb (0) 2.9 ppb (3) 3.0 ppb (3) N/A 1.0 ppb (2) 51.0 ppb (48) 0.08 ppb (2) 37.0 μg/m3 (35) 7.0 μg/m3 (30) 48.0
 
Sept. 17, 2021, 1 a.m. 3.7 ppb (4) 0.0 ppb (0) 3.8 ppb (4) 4.0 ppb (4) N/A 1.0 ppb (2) 52.0 ppb (49) 0.08 ppb (2) 44.0 μg/m3 (41) 13.0 μg/m3 (53) 53.0
 
Sept. 17, 2021, midnight 4.0 ppb (4) 0.3 ppb (1) 3.8 ppb (4) 4.0 ppb (4) N/A 1.0 ppb (2) 54.0 ppb (50) 0.09 ppb (2) 49.0 μg/m3 (46) 11.0 μg/m3 (46) 50.0
 
Sept. 16, 2021, 11 p.m. 3.3 ppb (4) 0.1 ppb (1) 3.4 ppb (4) 3.0 ppb (3) N/A 1.0 ppb (2) 56.0 ppb (55) 0.1 ppb (2) 52.0 μg/m3 (49) 7.0 μg/m3 (30) 55.0
 
Sept. 16, 2021, 10 p.m. 3.5 ppb (4) 0.3 ppb (1) 3.5 ppb (4) 3.0 ppb (3) N/A 1.0 ppb (2) 57.0 ppb (58) 0.1 ppb (2) 65.0 μg/m3 (56) 8.0 μg/m3 (34) 58.0
 
Sept. 16, 2021, 9 p.m. 3.7 ppb (4) 0.4 ppb (1) 3.4 ppb (4) 3.0 ppb (3) N/A 1.0 ppb (2) 57.0 ppb (58) 0.1 ppb (2) 66.0 μg/m3 (57) 6.0 μg/m3 (25) 58.0
 
Sept. 16, 2021, 8 p.m. 3.9 ppb (4) 0.3 ppb (1) 3.6 ppb (4) 4.0 ppb (4) N/A 1.0 ppb (2) 55.0 ppb (51) 0.1 ppb (2) 58.0 μg/m3 (53) 6.0 μg/m3 (25) 53.0
 
Sept. 16, 2021, 7 p.m. 4.0 ppb (4) 0.4 ppb (1) 3.7 ppb (4) 4.0 ppb (4) N/A 1.0 ppb (2) 55.0 ppb (51) 0.11 ppb (2) 71.0 μg/m3 (59) 7.0 μg/m3 (30) 59.0
 
Sept. 16, 2021, 6 p.m. 4.2 ppb (4) 0.4 ppb (1) 3.8 ppb (4) 4.0 ppb (4) N/A 1.0 ppb (2) 53.0 ppb (50) 0.11 ppb (2) 43.0 μg/m3 (40) 9.0 μg/m3 (38) 50.0
 
Sept. 16, 2021, 5 p.m. 4.8 ppb (5) 0.6 ppb (1) 4.2 ppb (4) 4.0 ppb (4) N/A 1.0 ppb (2) 50.0 ppb (47) 0.11 ppb (2) 35.0 μg/m3 (33) 5.0 μg/m3 (21) 47.0
 
Sept. 16, 2021, 4 p.m. 5.8 ppb (6) 0.8 ppb (1) 5.2 ppb (5) 5.0 ppb (5) N/A 1.0 ppb (2) 44.0 ppb (41) 0.12 ppb (2) 26.0 μg/m3 (25) 7.0 μg/m3 (30) 41.0
 
Sept. 16, 2021, 3 p.m. 6.5 ppb (7) 1.1 ppb (2) 5.8 ppb (6) 6.0 ppb (6) N/A 1.0 ppb (2) 39.0 ppb (37) 0.12 ppb (2) 23.0 μg/m3 (22) 7.0 μg/m3 (30) 37.0
 
Sept. 16, 2021, 2 p.m. 8.5 ppb (9) 1.3 ppb (2) 7.5 ppb (8) 7.0 ppb (7) N/A 1.0 ppb (2) 34.0 ppb (32) 0.14 ppb (2) 18.0 μg/m3 (17) 4.0 μg/m3 (17) 32.0
 
Sept. 16, 2021, 1 p.m. 8.9 ppb (9) 0.9 ppb (1) 7.7 ppb (8) 8.0 ppb (8) N/A 1.0 ppb (2) 32.0 ppb (30) 0.14 ppb (2) 20.0 μg/m3 (19) 3.0 μg/m3 (13) 30.0
 
Sept. 16, 2021, noon 9.0 ppb (9) 0.5 ppb (1) 7.8 ppb (8) 9.0 ppb (9) N/A N/A 29.0 ppb (27) 0.13 ppb (2) 19.0 μg/m3 (18) 6.0 μg/m3 (25) 27.0
 
Sept. 16, 2021, 11 a.m. 6.8 ppb (7) 0.1 ppb (1) 5.8 ppb (6) 7.0 ppb (7) N/A N/A 30.0 ppb (28) 0.13 ppb (2) 19.0 μg/m3 (18) 7.0 μg/m3 (30) 30.0
 
Sept. 16, 2021, 10 a.m. 2.9 ppb (3) 0.1 ppb (1) 2.7 ppb (3) 3.0 ppb (3) N/A 1.0 ppb (2) 38.0 ppb (36) N/A 22.0 μg/m3 (21) 5.0 μg/m3 (21) 36.0
 
Sept. 16, 2021, 9 a.m. 2.3 ppb (3) 0.2 ppb (1) N/A 2.0 ppb (2) N/A 1.0 ppb (2) 39.0 ppb (37) 0.1 ppb (2) 18.0 μg/m3 (17) 5.0 μg/m3 (21) 37.0
 
Sept. 16, 2021, 8 a.m. 3.2 ppb (4) 0.1 ppb (1) N/A 3.0 ppb (3) N/A 1.0 ppb (2) 37.0 ppb (35) 0.09 ppb (2) 34.0 μg/m3 (32) 6.0 μg/m3 (25) 35.0
 
Sept. 16, 2021, 7 a.m. 2.4 ppb (3) 0.0 ppb (0) 2.5 ppb (3) 2.0 ppb (2) N/A 1.0 ppb (2) 39.0 ppb (37) 0.09 ppb (2) 25.0 μg/m3 (24) 3.0 μg/m3 (13) 37.0
 
Sept. 16, 2021, 6 a.m. 2.1 ppb (2) 0.0 ppb (0) 2.1 ppb (2) 2.0 ppb (2) N/A 1.0 ppb (2) 42.0 ppb (39) 0.09 ppb (2) 26.0 μg/m3 (25) 5.0 μg/m3 (21) 39.0
 
Sept. 16, 2021, 5 a.m. 2.4 ppb (3) 0.1 ppb (1) 2.4 ppb (3) 2.0 ppb (2) N/A 1.0 ppb (2) 42.0 ppb (39) 0.1 ppb (2) 26.0 μg/m3 (25) 3.0 μg/m3 (13) 39.0
 
Sept. 16, 2021, 4 a.m. 2.8 ppb (3) 0.0 ppb (0) 2.9 ppb (3) 3.0 ppb (3) N/A 1.0 ppb (2) 41.0 ppb (38) 0.11 ppb (2) 18.0 μg/m3 (17) 3.0 μg/m3 (13) 38.0
 
Sept. 16, 2021, 3 a.m. 3.4 ppb (4) 0.2 ppb (1) 3.3 ppb (4) 3.0 ppb (3) N/A 1.0 ppb (2) 41.0 ppb (38) 0.12 ppb (2) 26.0 μg/m3 (25) 5.0 μg/m3 (21) 38.0
 
Sept. 16, 2021, 2 a.m. 9.2 ppb (9) 0.2 ppb (1) 8.6 ppb (9) 9.0 ppb (9) N/A 1.0 ppb (2) 36.0 ppb (34) 0.15 ppb (2) 25.0 μg/m3 (24) 3.0 μg/m3 (13) 34.0
 
Sept. 16, 2021, 1 a.m. 13.6 ppb (13) 0.1 ppb (1) 12.8 ppb (13) 14.0 ppb (14) N/A 1.0 ppb (2) 34.0 ppb (32) 0.19 ppb (3) 17.0 μg/m3 (16) 5.0 μg/m3 (21) 32.0
 
Sept. 16, 2021, midnight 9.9 ppb (10) 0.3 ppb (1) 9.1 ppb (9) 10.0 ppb (10) N/A 1.0 ppb (2) 39.0 ppb (37) 0.18 ppb (3) 15.0 μg/m3 (14) 3.0 μg/m3 (13) 37.0
 
Sept. 15, 2021, 11 p.m. 4.7 ppb (5) 0.0 ppb (0) 4.6 ppb (5) 5.0 ppb (5) N/A 1.0 ppb (2) 46.0 ppb (43) 0.14 ppb (2) 14.0 μg/m3 (13) 1.0 μg/m3 (5) 43.0
 
Sept. 15, 2021, 10 p.m. 4.6 ppb (5) 0.4 ppb (1) 4.4 ppb (5) 4.0 ppb (4) N/A 1.0 ppb (2) 46.0 ppb (43) 0.14 ppb (2) 13.0 μg/m3 (13) 4.0 μg/m3 (17) 43.0
 
Sept. 15, 2021, 9 p.m. 4.7 ppb (5) 0.4 ppb (1) 4.5 ppb (5) 4.0 ppb (4) N/A 1.0 ppb (2) 46.0 ppb (43) 0.14 ppb (2) 14.0 μg/m3 (13) 5.0 μg/m3 (21) 43.0
 
Sept. 15, 2021, 8 p.m. 3.6 ppb (4) 0.5 ppb (1) 3.4 ppb (4) 3.0 ppb (3) N/A 1.0 ppb (2) 48.0 ppb (45) 0.14 ppb (2) 7.0 μg/m3 (7) 1.0 μg/m3 (5) 45.0
 
Sept. 15, 2021, 7 p.m. 3.1 ppb (3) 0.3 ppb (1) 2.9 ppb (3) 3.0 ppb (3) N/A 1.0 ppb (2) 48.0 ppb (45) 0.14 ppb (2) N/A N/A 45.0
 
Sept. 15, 2021, 6 p.m. 4.2 ppb (4) 0.6 ppb (1) 4.1 ppb (4) 4.0 ppb (4) N/A 1.0 ppb (2) 44.0 ppb (41) 0.14 ppb (2) 14.0 μg/m3 (13) -1.0 μg/m3 (0) 41.0
 
Sept. 15, 2021, 5 p.m. 5.2 ppb (5) 1.0 ppb (1) 4.8 ppb (5) 4.0 ppb (4) N/A 1.0 ppb (2) 39.0 ppb (37) 0.14 ppb (2) 10.0 μg/m3 (10) 1.0 μg/m3 (5) 37.0
 
Sept. 15, 2021, 4 p.m. 8.2 ppb (8) 1.9 ppb (2) 7.6 ppb (8) 6.0 ppb (6) N/A 1.0 ppb (2) 33.0 ppb (31) 0.15 ppb (2) 15.0 μg/m3 (14) 4.0 μg/m3 (17) 31.0
 
Sept. 15, 2021, 3 p.m. 18.8 ppb (18) 5.8 ppb (6) 17.8 ppb (17) 13.0 ppb (13) N/A 1.0 ppb (2) 22.0 ppb (21) 0.22 ppb (3) 22.0 μg/m3 (21) 5.0 μg/m3 (21) 21.0
 
Sept. 15, 2021, 2 p.m. 44.0 ppb (42) 20.5 ppb (20) 42.3 ppb (40) 24.0 ppb (23) N/A 1.0 ppb (2) 10.0 ppb (10) 0.29 ppb (4) 30.0 μg/m3 (28) 6.0 μg/m3 (25) 42.0
 
Sept. 15, 2021, 1 p.m. 53.2 ppb (51) 32.0 ppb (31) 51.6 ppb (49) 21.0 ppb (20) N/A 1.0 ppb (2) 5.0 ppb (5) 0.35 ppb (4) 26.0 μg/m3 (25) 8.0 μg/m3 (34) 51.0
 
Sept. 15, 2021, noon 87.4 ppb (87) 69.1 ppb (68) 107.1 ppb (103) 18.0 ppb (17) N/A N/A 2.0 ppb (2) 0.5 ppb (6) 31.0 μg/m3 (29) 8.0 μg/m3 (34) 103.0
 
Sept. 15, 2021, 11 a.m. 46.8 ppb (45) 30.1 ppb (29) 57.1 ppb (55) 17.0 ppb (17) N/A N/A 1.0 ppb (1) 0.37 ppb (5) 15.0 μg/m3 (14) 6.0 μg/m3 (25) 55.0
 
Sept. 15, 2021, 10 a.m. 17.9 ppb (17) 2.8 ppb (3) 20.0 ppb (19) 15.0 ppb (15) N/A 1.0 ppb (2) 2.0 ppb (2) N/A 10.0 μg/m3 (10) 6.0 μg/m3 (25) 25.0
 
Sept. 15, 2021, 9 a.m. 12.2 ppb (12) 0.5 ppb (1) N/A 12.0 ppb (12) N/A 1.0 ppb (2) 6.0 ppb (6) 0.19 ppb (3) 7.0 μg/m3 (7) 8.0 μg/m3 (34) 34.0
 
Sept. 15, 2021, 8 a.m. 12.8 ppb (13) 0.3 ppb (1) N/A 13.0 ppb (13) N/A 1.0 ppb (2) 7.0 ppb (7) 0.18 ppb (3) 9.0 μg/m3 (9) 4.0 μg/m3 (17) 17.0