ID: 2374

AQSQID: 410670005

Site Name: Portland Near Road

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

Updated: Sept. 19, 2021, 10:57 p.m.

Location: Lake Oswego (Swest Bradbury Court), OR

Reporting: True, Located: True

Current AQI: 25.0

Lake Oswego (Swest Bradbury Court) OR, US: 45.39916, -122.7455

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
Sept. 19, 2021, 9 p.m. 15.0 ppb (15) 9.5 ppb (9) N/A 6.0 ppb (6) N/A N/A 26.0 ppb (25) 0.2 ppb (3) N/A 3.8 μg/m3 (16) 25.0
 
Sept. 19, 2021, 8 p.m. 10.6 ppb (10) 6.3 ppb (6) N/A 4.0 ppb (4) N/A N/A 28.0 ppb (26) 0.11 ppb (2) N/A 4.3 μg/m3 (18) 26.0
 
Sept. 19, 2021, 7 p.m. 10.0 ppb (10) 6.5 ppb (7) N/A 4.0 ppb (4) N/A N/A 27.0 ppb (25) 0.14 ppb (2) N/A 4.0 μg/m3 (17) 25.0
 
Sept. 19, 2021, 6 p.m. 12.2 ppb (12) 7.4 ppb (7) N/A 5.0 ppb (5) N/A N/A 25.0 ppb (24) 0.14 ppb (2) N/A 3.8 μg/m3 (16) 24.0
 
Sept. 19, 2021, 5 p.m. 13.4 ppb (13) 7.5 ppb (8) N/A 6.0 ppb (6) N/A N/A 22.0 ppb (21) 0.15 ppb (2) N/A 4.3 μg/m3 (18) 21.0
 
Sept. 19, 2021, 4 p.m. 13.0 ppb (13) 7.1 ppb (7) N/A 6.0 ppb (6) N/A N/A 20.0 ppb (19) 0.19 ppb (3) N/A 3.6 μg/m3 (16) 19.0
 
Sept. 19, 2021, 3 p.m. 15.2 ppb (15) 8.1 ppb (8) N/A 7.0 ppb (7) N/A N/A 19.0 ppb (18) 0.12 ppb (2) N/A 3.2 μg/m3 (14) 18.0
 
Sept. 19, 2021, 2 p.m. 12.1 ppb (12) 4.9 ppb (5) N/A 7.0 ppb (7) N/A N/A 21.0 ppb (20) 0.1 ppb (2) N/A 3.2 μg/m3 (14) 20.0
 
Sept. 19, 2021, 1 p.m. 7.1 ppb (7) 2.0 ppb (2) N/A 5.0 ppb (5) N/A N/A 25.0 ppb (24) 0.08 ppb (2) N/A 2.9 μg/m3 (13) 24.0
 
Sept. 19, 2021, noon 3.0 ppb (3) 0.6 ppb (1) N/A 2.0 ppb (2) N/A N/A 30.0 ppb (28) 0.04 ppb (0) N/A 2.5 μg/m3 (11) 28.0
 
Sept. 19, 2021, 11 a.m. 4.8 ppb (5) 1.0 ppb (1) N/A 4.0 ppb (4) N/A N/A 29.0 ppb (27) 0.04 ppb (0) N/A 2.5 μg/m3 (11) 27.0
 
Sept. 19, 2021, 10 a.m. 4.1 ppb (4) 1.2 ppb (2) N/A 3.0 ppb (3) N/A N/A 33.0 ppb (31) 0.05 ppb (2) N/A 2.4 μg/m3 (10) 31.0
 
Sept. 19, 2021, 9 a.m. 4.8 ppb (5) 1.8 ppb (2) N/A 3.0 ppb (3) N/A N/A 33.0 ppb (31) 0.05 ppb (2) N/A 2.6 μg/m3 (11) 31.0
 
Sept. 19, 2021, 8 a.m. 4.6 ppb (5) 1.5 ppb (2) N/A 3.0 ppb (3) N/A N/A 32.0 ppb (30) 0.05 ppb (2) N/A 3.2 μg/m3 (14) 30.0
 
Sept. 19, 2021, 7 a.m. 3.7 ppb (4) 1.0 ppb (1) N/A 3.0 ppb (3) N/A N/A 28.0 ppb (26) 0.04 ppb (0) N/A 4.0 μg/m3 (17) 26.0
 
Sept. 19, 2021, 6 a.m. 2.4 ppb (3) 0.5 ppb (1) N/A 2.0 ppb (2) N/A N/A 27.0 ppb (25) 0.04 ppb (0) N/A 4.4 μg/m3 (19) 25.0
 
Sept. 19, 2021, 5 a.m. 2.9 ppb (3) 0.6 ppb (1) N/A 2.0 ppb (2) N/A N/A 25.0 ppb (24) 0.05 ppb (2) N/A 4.6 μg/m3 (20) 24.0
 
Sept. 19, 2021, 4 a.m. 3.8 ppb (4) 1.0 ppb (1) N/A 3.0 ppb (3) N/A N/A 26.0 ppb (25) 0.05 ppb (2) N/A 4.2 μg/m3 (18) 25.0
 
Sept. 19, 2021, 3 a.m. 3.0 ppb (3) 0.5 ppb (1) N/A 2.0 ppb (2) N/A N/A 24.0 ppb (23) 0.05 ppb (2) N/A 3.9 μg/m3 (17) 23.0
 
Sept. 19, 2021, 2 a.m. 3.6 ppb (4) 0.7 ppb (1) N/A 3.0 ppb (3) N/A N/A 27.0 ppb (25) 0.04 ppb (0) N/A 3.7 μg/m3 (16) 25.0
 
Sept. 19, 2021, 1 a.m. 8.4 ppb (8) 3.4 ppb (4) N/A 5.0 ppb (5) N/A N/A 29.0 ppb (27) 0.11 ppb (2) N/A 3.6 μg/m3 (16) 27.0
 
Sept. 19, 2021, midnight 14.3 ppb (14) 7.2 ppb (7) N/A 7.0 ppb (7) N/A N/A 29.0 ppb (27) 0.21 ppb (3) N/A 3.8 μg/m3 (16) 27.0
 
Sept. 18, 2021, 11 p.m. 14.2 ppb (14) 8.0 ppb (8) N/A 6.0 ppb (6) N/A N/A 29.0 ppb (27) 0.16 ppb (3) N/A 4.4 μg/m3 (19) 27.0
 
Sept. 18, 2021, 10 p.m. 15.5 ppb (15) 9.8 ppb (10) N/A 6.0 ppb (6) N/A N/A 31.0 ppb (29) 0.15 ppb (2) N/A 4.6 μg/m3 (20) 29.0
 
Sept. 18, 2021, 9 p.m. 17.1 ppb (17) 9.7 ppb (10) N/A 7.0 ppb (7) N/A N/A 30.0 ppb (28) 0.19 ppb (3) N/A 4.6 μg/m3 (20) 28.0
 
Sept. 18, 2021, 8 p.m. 15.5 ppb (15) 9.0 ppb (9) N/A 7.0 ppb (7) N/A N/A 32.0 ppb (30) 0.17 ppb (3) N/A 3.9 μg/m3 (17) 30.0
 
Sept. 18, 2021, 7 p.m. 16.0 ppb (16) 8.2 ppb (8) N/A 8.0 ppb (8) N/A N/A 32.0 ppb (30) 0.13 ppb (2) N/A 4.6 μg/m3 (20) 30.0
 
Sept. 18, 2021, 6 p.m. 17.2 ppb (17) 7.3 ppb (7) N/A 10.0 ppb (10) N/A N/A 32.0 ppb (30) 0.19 ppb (3) N/A 4.7 μg/m3 (20) 30.0
 
Sept. 18, 2021, 5 p.m. 10.3 ppb (10) 3.5 ppb (4) N/A 7.0 ppb (7) N/A N/A 38.0 ppb (36) 0.09 ppb (2) N/A 3.8 μg/m3 (16) 36.0
 
Sept. 18, 2021, 4 p.m. 6.5 ppb (7) 1.6 ppb (2) N/A 5.0 ppb (5) N/A N/A 41.0 ppb (38) 0.05 ppb (2) N/A 2.8 μg/m3 (12) 38.0
 
Sept. 18, 2021, 3 p.m. 4.9 ppb (5) 1.1 ppb (2) N/A 4.0 ppb (4) N/A N/A 43.0 ppb (40) 0.04 ppb (0) N/A 2.8 μg/m3 (12) 40.0
 
Sept. 18, 2021, 2 p.m. 2.8 ppb (3) 0.4 ppb (1) N/A 2.0 ppb (2) N/A N/A 42.0 ppb (39) 0.01 ppb (0) N/A 2.7 μg/m3 (12) 39.0
 
Sept. 18, 2021, 1 p.m. 4.0 ppb (4) 0.6 ppb (1) N/A 3.0 ppb (3) N/A N/A 39.0 ppb (37) 0.02 ppb (0) N/A 2.8 μg/m3 (12) 37.0
 
Sept. 18, 2021, noon 3.3 ppb (4) 0.5 ppb (1) N/A 3.0 ppb (3) N/A N/A 41.0 ppb (38) 0.0 ppb (0) N/A 2.6 μg/m3 (11) 38.0
 
Sept. 18, 2021, 11 a.m. 3.9 ppb (4) 0.9 ppb (1) N/A 3.0 ppb (3) N/A N/A 37.0 ppb (35) 0.0 ppb (0) N/A 2.6 μg/m3 (11) 35.0
 
Sept. 18, 2021, 10 a.m. 1.6 ppb (2) 0.5 ppb (1) N/A 1.0 ppb (1) N/A N/A 37.0 ppb (35) N/A N/A 2.6 μg/m3 (11) 35.0
 
Sept. 18, 2021, 9 a.m. 1.4 ppb (2) 0.4 ppb (1) N/A 1.0 ppb (1) N/A N/A 38.0 ppb (36) N/A N/A 2.7 μg/m3 (12) 36.0
 
Sept. 18, 2021, 8 a.m. 6.5 ppb (7) 1.4 ppb (2) N/A 5.0 ppb (5) N/A N/A 34.0 ppb (32) 0.02 ppb (0) N/A 2.6 μg/m3 (11) 32.0
 
Sept. 18, 2021, 7 a.m. 8.0 ppb (8) 3.7 ppb (4) N/A 4.0 ppb (4) N/A N/A 27.0 ppb (25) 0.04 ppb (0) N/A 2.7 μg/m3 (12) 25.0
 
Sept. 18, 2021, 6 a.m. 4.8 ppb (5) 2.6 ppb (3) N/A 2.0 ppb (2) N/A N/A 19.0 ppb (18) 0.0 ppb (0) N/A 3.8 μg/m3 (16) 18.0
 
Sept. 18, 2021, 5 a.m. 2.5 ppb (3) 1.1 ppb (2) N/A 1.0 ppb (1) N/A N/A 20.0 ppb (19) N/A N/A 3.2 μg/m3 (14) 19.0
 
Sept. 18, 2021, 4 a.m. 4.4 ppb (5) 1.9 ppb (2) N/A 2.0 ppb (2) N/A N/A 19.0 ppb (18) 0.01 ppb (0) N/A 2.8 μg/m3 (12) 18.0
 
Sept. 18, 2021, 3 a.m. 8.1 ppb (8) 3.7 ppb (4) N/A 4.0 ppb (4) N/A N/A 17.0 ppb (16) 0.03 ppb (0) N/A 2.8 μg/m3 (12) 16.0
 
Sept. 18, 2021, 2 a.m. 16.5 ppb (16) 9.9 ppb (10) N/A 7.0 ppb (7) N/A N/A 15.0 ppb (14) 0.16 ppb (3) N/A 3.3 μg/m3 (14) 16.0
 
Sept. 18, 2021, 1 a.m. 15.9 ppb (15) 9.0 ppb (9) N/A 7.0 ppb (7) N/A N/A 17.0 ppb (16) 0.13 ppb (2) N/A 4.0 μg/m3 (17) 17.0
 
Sept. 18, 2021, midnight 23.8 ppb (23) 15.3 ppb (15) N/A 9.0 ppb (9) N/A N/A 18.0 ppb (17) 0.28 ppb (4) N/A 4.2 μg/m3 (18) 23.0
 
Sept. 17, 2021, 11 p.m. 25.4 ppb (24) 14.6 ppb (14) N/A 11.0 ppb (11) N/A N/A 23.0 ppb (22) 0.28 ppb (4) N/A 5.9 μg/m3 (25) 25.0
 
Sept. 17, 2021, 10 p.m. 22.7 ppb (22) 11.8 ppb (12) N/A 11.0 ppb (11) N/A N/A 29.0 ppb (27) 0.19 ppb (3) N/A 8.4 μg/m3 (36) 36.0
 
Sept. 17, 2021, 9 p.m. 24.2 ppb (23) 12.4 ppb (12) N/A 12.0 ppb (12) N/A N/A 32.0 ppb (30) 0.28 ppb (4) N/A 16.1 μg/m3 (60) 60.0
 
Sept. 17, 2021, 8 p.m. 28.0 ppb (27) 13.9 ppb (14) N/A 14.0 ppb (14) N/A N/A 37.0 ppb (35) 0.33 ppb (4) N/A 22.8 μg/m3 (74) 74.0
 
Sept. 17, 2021, 7 p.m. 11.8 ppb (12) 5.1 ppb (5) N/A 7.0 ppb (7) N/A N/A 41.0 ppb (38) 0.29 ppb (4) N/A 23.3 μg/m3 (75) 75.0
 
Sept. 17, 2021, 6 p.m. 10.8 ppb (11) 4.9 ppb (5) N/A 6.0 ppb (6) N/A N/A 33.0 ppb (31) 0.24 ppb (3) N/A 22.4 μg/m3 (73) 73.0
 
Sept. 17, 2021, 5 p.m. 36.1 ppb (35) 21.7 ppb (21) N/A 15.0 ppb (15) N/A N/A 20.0 ppb (19) 0.34 ppb (4) N/A 22.0 μg/m3 (72) 72.0
 
Sept. 17, 2021, 4 p.m. 23.0 ppb (22) 9.5 ppb (9) N/A 13.0 ppb (13) N/A N/A 18.0 ppb (17) 0.27 ppb (4) N/A 20.7 μg/m3 (70) 70.0
 
Sept. 17, 2021, 3 p.m. 14.1 ppb (14) 4.6 ppb (5) N/A 10.0 ppb (10) N/A N/A 20.0 ppb (19) 0.22 ppb (3) N/A 18.2 μg/m3 (64) 64.0
 
Sept. 17, 2021, 2 p.m. 11.6 ppb (11) 2.0 ppb (2) N/A 10.0 ppb (10) N/A N/A 20.0 ppb (19) 0.19 ppb (3) N/A 16.5 μg/m3 (61) 61.0
 
Sept. 17, 2021, 1 p.m. 12.3 ppb (12) 1.5 ppb (2) N/A 11.0 ppb (11) N/A N/A 15.0 ppb (14) 0.17 ppb (3) N/A 10.1 μg/m3 (43) 43.0
 
Sept. 17, 2021, noon 10.4 ppb (10) 0.9 ppb (1) N/A 9.0 ppb (9) N/A N/A 13.0 ppb (13) 0.15 ppb (2) N/A 7.6 μg/m3 (32) 32.0
 
Sept. 17, 2021, 11 a.m. 9.9 ppb (10) 0.8 ppb (1) N/A 9.0 ppb (9) N/A N/A 13.0 ppb (13) 0.14 ppb (2) N/A 6.8 μg/m3 (29) 29.0
 
Sept. 17, 2021, 10 a.m. 10.5 ppb (10) 0.8 ppb (1) N/A 10.0 ppb (10) N/A N/A 13.0 ppb (13) 0.16 ppb (3) N/A 5.9 μg/m3 (25) 25.0
 
Sept. 17, 2021, 9 a.m. 15.6 ppb (15) 2.3 ppb (3) N/A 13.0 ppb (13) N/A N/A 12.0 ppb (12) 0.17 ppb (3) N/A 5.8 μg/m3 (25) 25.0
 
Sept. 17, 2021, 8 a.m. 19.7 ppb (19) 2.4 ppb (3) N/A 17.0 ppb (17) N/A N/A 9.0 ppb (9) 0.19 ppb (3) N/A 6.8 μg/m3 (29) 29.0
 
Sept. 17, 2021, 7 a.m. 31.7 ppb (30) 10.9 ppb (11) N/A 21.0 ppb (20) N/A N/A 10.0 ppb (10) 0.22 ppb (3) N/A 5.7 μg/m3 (24) 30.0
 
Sept. 17, 2021, 6 a.m. 9.0 ppb (9) 2.0 ppb (2) N/A 7.0 ppb (7) N/A N/A 32.0 ppb (30) 0.12 ppb (2) N/A 5.1 μg/m3 (22) 30.0
 
Sept. 17, 2021, 5 a.m. 4.3 ppb (5) 1.0 ppb (1) N/A 3.0 ppb (3) N/A N/A 36.0 ppb (34) 0.12 ppb (2) N/A 4.5 μg/m3 (19) 34.0
 
Sept. 17, 2021, 4 a.m. 5.3 ppb (5) 1.0 ppb (1) N/A 4.0 ppb (4) N/A N/A 35.0 ppb (33) 0.13 ppb (2) N/A 4.3 μg/m3 (18) 33.0
 
Sept. 17, 2021, 3 a.m. 6.5 ppb (7) 1.9 ppb (2) N/A 5.0 ppb (5) N/A N/A 35.0 ppb (33) 0.13 ppb (2) N/A 4.3 μg/m3 (18) 33.0
 
Sept. 17, 2021, 2 a.m. 4.8 ppb (5) 1.0 ppb (1) N/A 4.0 ppb (4) N/A N/A 36.0 ppb (34) 0.12 ppb (2) N/A 4.3 μg/m3 (18) 34.0
 
Sept. 17, 2021, 1 a.m. 5.9 ppb (6) 1.9 ppb (2) N/A 4.0 ppb (4) N/A N/A 38.0 ppb (36) 0.12 ppb (2) N/A 4.8 μg/m3 (20) 36.0
 
Sept. 17, 2021, midnight 7.6 ppb (8) 3.4 ppb (4) N/A 4.0 ppb (4) N/A N/A 38.0 ppb (36) 0.17 ppb (3) N/A 5.3 μg/m3 (23) 36.0
 
Sept. 16, 2021, 11 p.m. 11.5 ppb (11) 6.1 ppb (6) N/A 5.0 ppb (5) N/A N/A 37.0 ppb (35) 0.17 ppb (3) N/A 5.8 μg/m3 (25) 35.0
 
Sept. 16, 2021, 10 p.m. 17.3 ppb (17) 10.5 ppb (10) N/A 7.0 ppb (7) N/A N/A 35.0 ppb (33) 0.23 ppb (3) N/A 6.1 μg/m3 (26) 33.0
 
Sept. 16, 2021, 9 p.m. 9.1 ppb (9) 4.4 ppb (5) N/A 5.0 ppb (5) N/A N/A 36.0 ppb (34) 0.13 ppb (2) N/A 5.8 μg/m3 (25) 34.0
 
Sept. 16, 2021, 8 p.m. 13.6 ppb (13) 8.3 ppb (8) N/A 5.0 ppb (5) N/A N/A 29.0 ppb (27) 0.15 ppb (2) N/A 5.5 μg/m3 (23) 27.0
 
Sept. 16, 2021, 7 p.m. 13.6 ppb (13) 8.8 ppb (9) N/A 5.0 ppb (5) N/A N/A 26.0 ppb (25) 0.13 ppb (2) N/A 4.9 μg/m3 (21) 25.0
 
Sept. 16, 2021, 6 p.m. 38.2 ppb (37) 29.3 ppb (28) N/A 9.0 ppb (9) N/A N/A 19.0 ppb (18) 0.21 ppb (3) N/A 4.7 μg/m3 (20) 37.0
 
Sept. 16, 2021, 5 p.m. 45.2 ppb (43) 35.6 ppb (34) N/A 10.0 ppb (10) N/A N/A 15.0 ppb (14) 0.23 ppb (3) N/A 4.9 μg/m3 (21) 43.0
 
Sept. 16, 2021, 4 p.m. 74.3 ppb (73) 64.4 ppb (63) N/A 10.0 ppb (10) N/A N/A 9.0 ppb (9) 0.45 ppb (6) N/A 6.0 μg/m3 (25) 73.0
 
Sept. 16, 2021, 3 p.m. 80.3 ppb (80) 70.6 ppb (69) N/A 10.0 ppb (10) N/A N/A 7.0 ppb (7) 0.4 ppb (5) N/A 6.4 μg/m3 (27) 80.0
 
Sept. 16, 2021, 2 p.m. 40.6 ppb (39) 31.6 ppb (30) N/A 9.0 ppb (9) N/A N/A 5.0 ppb (5) 0.29 ppb (4) N/A 4.7 μg/m3 (20) 39.0
 
Sept. 16, 2021, 1 p.m. 51.5 ppb (49) 40.6 ppb (39) N/A 11.0 ppb (11) N/A N/A 3.0 ppb (3) 0.3 ppb (4) N/A 5.0 μg/m3 (21) 49.0
 
Sept. 16, 2021, noon 19.3 ppb (19) 6.6 ppb (7) N/A 13.0 ppb (13) N/A N/A 3.0 ppb (3) 0.21 ppb (3) N/A 3.8 μg/m3 (16) 19.0
 
Sept. 16, 2021, 11 a.m. 45.2 ppb (43) 33.3 ppb (32) N/A 12.0 ppb (12) N/A N/A 3.0 ppb (3) 0.16 ppb (3) N/A 4.4 μg/m3 (19) 43.0
 
Sept. 16, 2021, 10 a.m. 27.0 ppb (26) 15.0 ppb (15) N/A 12.0 ppb (12) N/A N/A 6.0 ppb (6) 0.13 ppb (2) N/A 4.0 μg/m3 (17) 26.0
 
Sept. 16, 2021, 9 a.m. 17.1 ppb (17) 7.9 ppb (8) N/A 9.0 ppb (9) N/A N/A 10.0 ppb (10) 0.14 ppb (2) N/A 3.9 μg/m3 (17) 17.0
 
Sept. 16, 2021, 8 a.m. 8.8 ppb (9) 0.9 ppb (1) N/A 8.0 ppb (8) N/A N/A 14.0 ppb (13) 0.13 ppb (2) N/A 3.9 μg/m3 (17) 17.0
 
Sept. 16, 2021, 7 a.m. 20.2 ppb (20) 7.6 ppb (8) N/A 13.0 ppb (13) N/A N/A 12.0 ppb (12) 0.15 ppb (2) N/A 4.0 μg/m3 (17) 20.0
 
Sept. 16, 2021, 6 a.m. 19.7 ppb (19) 7.9 ppb (8) N/A 12.0 ppb (12) N/A N/A 14.0 ppb (13) 0.19 ppb (3) N/A 3.9 μg/m3 (17) 19.0
 
Sept. 16, 2021, 5 a.m. 20.9 ppb (20) 10.6 ppb (10) N/A 10.0 ppb (10) N/A N/A 19.0 ppb (18) 0.17 ppb (3) N/A 3.7 μg/m3 (16) 20.0
 
Sept. 16, 2021, 4 a.m. 13.9 ppb (14) 9.0 ppb (9) N/A 5.0 ppb (5) N/A N/A 25.0 ppb (24) 0.18 ppb (3) N/A 3.5 μg/m3 (15) 24.0
 
Sept. 16, 2021, 3 a.m. 13.7 ppb (13) 9.3 ppb (9) N/A 4.0 ppb (4) N/A N/A 27.0 ppb (25) 0.2 ppb (3) N/A 3.4 μg/m3 (15) 25.0
 
Sept. 16, 2021, 2 a.m. 18.3 ppb (18) 12.2 ppb (12) N/A 6.0 ppb (6) N/A N/A 26.0 ppb (25) 0.29 ppb (4) N/A 3.6 μg/m3 (16) 25.0
 
Sept. 16, 2021, 1 a.m. 18.6 ppb (18) 13.8 ppb (14) N/A 5.0 ppb (5) N/A N/A 28.0 ppb (26) 0.24 ppb (3) N/A 3.7 μg/m3 (16) 26.0
 
Sept. 16, 2021, midnight 24.0 ppb (23) 16.9 ppb (16) N/A 7.0 ppb (7) N/A N/A 26.0 ppb (25) 0.31 ppb (4) N/A 4.1 μg/m3 (18) 25.0
 
Sept. 15, 2021, 11 p.m. 26.6 ppb (26) 20.0 ppb (19) N/A 7.0 ppb (7) N/A N/A 26.0 ppb (25) 0.26 ppb (4) N/A 4.3 μg/m3 (18) 26.0
 
Sept. 15, 2021, 10 p.m. 32.3 ppb (31) 23.2 ppb (22) N/A 9.0 ppb (9) N/A N/A 27.0 ppb (25) 0.29 ppb (4) N/A 4.5 μg/m3 (19) 31.0
 
Sept. 15, 2021, 9 p.m. 32.1 ppb (31) 22.5 ppb (22) N/A 10.0 ppb (10) N/A N/A 26.0 ppb (25) 0.27 ppb (4) N/A 4.4 μg/m3 (19) 31.0
 
Sept. 15, 2021, 8 p.m. 28.4 ppb (27) 20.0 ppb (19) N/A 8.0 ppb (8) N/A N/A 28.0 ppb (26) 0.26 ppb (4) N/A 4.6 μg/m3 (20) 27.0
 
Sept. 15, 2021, 7 p.m. 32.1 ppb (31) 23.5 ppb (23) N/A 9.0 ppb (9) N/A N/A 28.0 ppb (26) 0.21 ppb (3) N/A 4.2 μg/m3 (18) 31.0
 
Sept. 15, 2021, 6 p.m. 29.9 ppb (29) 21.0 ppb (20) N/A 9.0 ppb (9) N/A N/A 29.0 ppb (27) 0.18 ppb (3) N/A 4.1 μg/m3 (18) 29.0
 
Sept. 15, 2021, 5 p.m. 34.2 ppb (33) 25.9 ppb (25) N/A 8.0 ppb (8) N/A N/A 26.0 ppb (25) 0.2 ppb (3) N/A 4.4 μg/m3 (19) 33.0
 
Sept. 15, 2021, 4 p.m. 41.2 ppb (39) 31.6 ppb (30) N/A 10.0 ppb (10) N/A N/A 25.0 ppb (24) 0.25 ppb (3) N/A 4.4 μg/m3 (19) 39.0
 
Sept. 15, 2021, 3 p.m. 41.9 ppb (40) 32.1 ppb (31) N/A 10.0 ppb (10) N/A N/A 25.0 ppb (24) 0.24 ppb (3) N/A 4.4 μg/m3 (19) 40.0
 
Sept. 15, 2021, 2 p.m. 60.0 ppb (58) 41.6 ppb (40) N/A 19.0 ppb (18) N/A N/A 15.0 ppb (14) 0.4 ppb (5) N/A 4.8 μg/m3 (20) 58.0
 
Sept. 15, 2021, 1 p.m. 56.4 ppb (54) 40.7 ppb (39) N/A 16.0 ppb (16) N/A N/A 14.0 ppb (13) 0.27 ppb (4) N/A 4.1 μg/m3 (18) 54.0
 
Sept. 15, 2021, noon 34.7 ppb (33) 21.9 ppb (21) N/A 13.0 ppb (13) N/A N/A 18.0 ppb (17) 0.16 ppb (3) N/A 3.0 μg/m3 (13) 33.0
 
Sept. 15, 2021, 11 a.m. 14.7 ppb (14) 8.8 ppb (9) N/A 6.0 ppb (6) N/A N/A 24.0 ppb (23) 0.04 ppb (0) N/A 2.5 μg/m3 (11) 23.0
 
Sept. 15, 2021, 10 a.m. 8.5 ppb (9) 4.9 ppb (5) N/A 4.0 ppb (4) N/A N/A 26.0 ppb (25) 0.02 ppb (0) N/A 2.3 μg/m3 (10) 25.0
 
Sept. 15, 2021, 9 a.m. 6.9 ppb (7) 3.5 ppb (4) N/A 3.0 ppb (3) N/A N/A 25.0 ppb (24) 0.04 ppb (0) N/A 2.6 μg/m3 (11) 24.0
 
Sept. 15, 2021, 8 a.m. 10.0 ppb (10) 5.1 ppb (5) N/A 5.0 ppb (5) N/A N/A 23.0 ppb (22) 0.05 ppb (2) N/A 3.1 μg/m3 (13) 22.0
 
Sept. 15, 2021, 7 a.m. 14.0 ppb (14) 6.8 ppb (7) N/A 7.0 ppb (7) N/A N/A 19.0 ppb (18) 0.07 ppb (2) N/A 3.6 μg/m3 (16) 18.0
 
Sept. 15, 2021, 6 a.m. 21.6 ppb (21) 11.3 ppb (11) N/A 10.0 ppb (10) N/A N/A 17.0 ppb (16) 0.13 ppb (2) N/A 3.5 μg/m3 (15) 21.0
 
Sept. 15, 2021, 5 a.m. 5.6 ppb (6) 1.3 ppb (2) N/A 4.0 ppb (4) N/A N/A 24.0 ppb (23) 0.04 ppb (0) N/A 3.3 μg/m3 (14) 23.0
 
Sept. 15, 2021, 4 a.m. 6.7 ppb (7) 1.3 ppb (2) N/A 5.0 ppb (5) N/A N/A 24.0 ppb (23) 0.06 ppb (2) N/A 3.5 μg/m3 (15) 23.0
 
Sept. 15, 2021, 3 a.m. 17.7 ppb (17) 6.9 ppb (7) N/A 11.0 ppb (11) N/A N/A 19.0 ppb (18) 0.18 ppb (3) N/A 4.2 μg/m3 (18) 18.0
 
Sept. 15, 2021, 2 a.m. 21.8 ppb (21) 7.9 ppb (8) N/A 14.0 ppb (14) N/A N/A 27.0 ppb (25) 0.22 ppb (3) N/A 5.5 μg/m3 (23) 25.0
 
Sept. 15, 2021, 1 a.m. 19.0 ppb (18) 5.9 ppb (6) N/A 13.0 ppb (13) N/A N/A 38.0 ppb (36) 0.25 ppb (3) N/A 5.6 μg/m3 (24) 36.0
 
Sept. 15, 2021, midnight 21.5 ppb (21) 10.9 ppb (11) N/A 11.0 ppb (11) N/A N/A 40.0 ppb (38) 0.26 ppb (4) N/A 5.5 μg/m3 (23) 38.0
 
Sept. 14, 2021, 11 p.m. 28.7 ppb (28) 15.5 ppb (15) N/A 13.0 ppb (13) N/A N/A 36.0 ppb (34) 0.31 ppb (4) N/A 5.7 μg/m3 (24) 34.0
 
Sept. 14, 2021, 10 p.m. 22.7 ppb (22) 13.4 ppb (13) N/A 9.0 ppb (9) N/A N/A 36.0 ppb (34) 0.25 ppb (3) N/A 5.7 μg/m3 (24) 34.0
 
Sept. 14, 2021, 9 p.m. 25.2 ppb (24) 15.0 ppb (15) N/A 10.0 ppb (10) N/A N/A 34.0 ppb (32) 0.25 ppb (3) N/A 6.3 μg/m3 (27) 32.0
 
Sept. 14, 2021, 8 p.m. 35.6 ppb (34) 21.9 ppb (21) N/A 14.0 ppb (14) N/A N/A 26.0 ppb (25) 0.32 ppb (4) N/A 7.5 μg/m3 (32) 34.0
 
Sept. 14, 2021, 7 p.m. 35.1 ppb (34) 23.3 ppb (22) N/A 12.0 ppb (12) N/A N/A 23.0 ppb (22) 0.27 ppb (4) N/A 8.5 μg/m3 (36) 36.0
 
Sept. 14, 2021, 6 p.m. 36.4 ppb (35) 24.8 ppb (24) N/A 12.0 ppb (12) N/A N/A 19.0 ppb (18) 0.27 ppb (4) N/A 10.3 μg/m3 (43) 43.0
 
Sept. 14, 2021, 5 p.m. 32.3 ppb (31) 22.8 ppb (22) N/A 10.0 ppb (10) N/A N/A 16.0 ppb (15) 0.21 ppb (3) N/A 9.5 μg/m3 (40) 40.0
 
Sept. 14, 2021, 4 p.m. 63.8 ppb (62) 54.6 ppb (52) N/A 10.0 ppb (10) N/A N/A 9.0 ppb (9) 0.36 ppb (5) N/A 9.2 μg/m3 (39) 62.0
 
Sept. 14, 2021, 3 p.m. 32.9 ppb (32) 25.5 ppb (25) N/A 8.0 ppb (8) N/A N/A 7.0 ppb (7) 0.24 ppb (3) N/A 7.5 μg/m3 (32) 32.0
 
Sept. 14, 2021, 2 p.m. 46.8 ppb (45) 40.6 ppb (39) N/A 6.0 ppb (6) N/A N/A 3.0 ppb (3) 0.3 ppb (4) N/A 6.8 μg/m3 (29) 45.0
 
Sept. 14, 2021, 1 p.m. 45.7 ppb (44) 39.3 ppb (38) N/A 7.0 ppb (7) N/A N/A 2.0 ppb (2) 0.28 ppb (4) N/A 6.3 μg/m3 (27) 44.0
 
Sept. 14, 2021, noon 34.9 ppb (33) 26.3 ppb (25) N/A 9.0 ppb (9) N/A N/A 2.0 ppb (2) 0.26 ppb (4) N/A 6.3 μg/m3 (27) 33.0
 
Sept. 14, 2021, 11 a.m. 34.7 ppb (33) 24.8 ppb (24) N/A 10.0 ppb (10) N/A N/A 2.0 ppb (2) 0.21 ppb (3) N/A 6.5 μg/m3 (28) 33.0
 
Sept. 14, 2021, 10 a.m. 20.0 ppb (19) 7.6 ppb (8) N/A 12.0 ppb (12) N/A N/A 3.0 ppb (3) 0.14 ppb (2) N/A 6.3 μg/m3 (27) 27.0
 
Sept. 14, 2021, 9 a.m. 37.7 ppb (36) 25.1 ppb (24) N/A 13.0 ppb (13) N/A N/A 3.0 ppb (3) 0.17 ppb (3) N/A 6.6 μg/m3 (28) 36.0
 
Sept. 14, 2021, 8 a.m. 14.6 ppb (14) 3.8 ppb (4) N/A 11.0 ppb (11) N/A N/A 7.0 ppb (7) 0.15 ppb (2) N/A 6.6 μg/m3 (28) 28.0
 
Sept. 14, 2021, 7 a.m. 13.5 ppb (13) 1.8 ppb (2) N/A 12.0 ppb (12) N/A N/A 7.0 ppb (7) 0.14 ppb (2) N/A 6.1 μg/m3 (26) 26.0
 
Sept. 14, 2021, 6 a.m. 29.3 ppb (28) 11.5 ppb (11) N/A 18.0 ppb (17) N/A N/A 5.0 ppb (5) 0.17 ppb (3) N/A 5.7 μg/m3 (24) 28.0
 
Sept. 14, 2021, 5 a.m. 19.8 ppb (19) 2.9 ppb (3) N/A 17.0 ppb (17) N/A N/A 8.0 ppb (8) 0.15 ppb (2) N/A 5.6 μg/m3 (24) 24.0
 
Sept. 14, 2021, 4 a.m. 25.1 ppb (24) 10.6 ppb (10) N/A 15.0 ppb (15) N/A N/A 16.0 ppb (15) 0.28 ppb (4) N/A 5.6 μg/m3 (24) 24.0
 
Sept. 14, 2021, 3 a.m. 33.7 ppb (32) 16.8 ppb (16) N/A 17.0 ppb (17) N/A N/A 17.0 ppb (16) 0.29 ppb (4) N/A 5.3 μg/m3 (23) 32.0
 
Sept. 14, 2021, 2 a.m. 21.6 ppb (21) 9.0 ppb (9) N/A 13.0 ppb (13) N/A N/A 27.0 ppb (25) 0.27 ppb (4) N/A 5.1 μg/m3 (22) 25.0
 
Sept. 14, 2021, 1 a.m. 13.1 ppb (13) 6.2 ppb (6) N/A 7.0 ppb (7) N/A N/A 34.0 ppb (32) 0.16 ppb (3) N/A 5.0 μg/m3 (21) 32.0
 
Sept. 14, 2021, midnight 22.0 ppb (21) 12.9 ppb (13) N/A 9.0 ppb (9) N/A N/A 33.0 ppb (31) 0.23 ppb (3) N/A 5.2 μg/m3 (22) 31.0
 
Sept. 13, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (29) 0.27 ppb (4) N/A 5.8 μg/m3 (25) 29.0
 
Sept. 13, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (30) 0.25 ppb (3) N/A 5.9 μg/m3 (25) 30.0
 
Sept. 13, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (29) 0.21 ppb (3) N/A 5.9 μg/m3 (25) 29.0
 
Sept. 13, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (25) 0.19 ppb (3) N/A 5.9 μg/m3 (25) 25.0
 
Sept. 13, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (20) 0.19 ppb (3) N/A 5.6 μg/m3 (24) 24.0
 
Sept. 13, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 16.0 ppb (15) 0.24 ppb (3) N/A 5.7 μg/m3 (24) 24.0
 
Sept. 13, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 16.0 ppb (15) 0.21 ppb (3) N/A 5.1 μg/m3 (22) 22.0
 
Sept. 13, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 10.0 ppb (10) 0.31 ppb (4) N/A 5.1 μg/m3 (22) 22.0
 
Sept. 13, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 8.0 ppb (8) 0.28 ppb (4) N/A 5.1 μg/m3 (22) 22.0
 
Sept. 13, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 4.0 ppb (4) 0.24 ppb (3) N/A 4.8 μg/m3 (20) 20.0
 
Sept. 13, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 5.0 ppb (5) 0.2 ppb (3) N/A 4.2 μg/m3 (18) 18.0
 
Sept. 13, 2021, noon N/A N/A N/A N/A N/A N/A 8.0 ppb (8) N/A N/A 4.2 μg/m3 (18) 18.0
 
Sept. 13, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 9.0 ppb (9) 0.09 ppb (2) N/A 4.1 μg/m3 (18) 18.0
 
Sept. 13, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 12.0 ppb (12) 0.11 ppb (2) N/A 4.1 μg/m3 (18) 18.0
 
Sept. 13, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 14.0 ppb (13) 0.13 ppb (2) N/A 4.0 μg/m3 (17) 17.0
 
Sept. 13, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 19.0 ppb (18) 0.08 ppb (2) N/A 3.9 μg/m3 (17) 18.0
 
Sept. 13, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (21) 0.11 ppb (2) N/A 3.8 μg/m3 (16) 21.0
 
Sept. 13, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (20) 0.14 ppb (2) N/A 3.7 μg/m3 (16) 20.0
 
Sept. 13, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (25) 0.1 ppb (2) N/A 3.7 μg/m3 (16) 25.0
 
Sept. 13, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (27) 0.16 ppb (3) N/A 3.9 μg/m3 (17) 27.0
 
Sept. 13, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (26) 0.2 ppb (3) N/A 4.2 μg/m3 (18) 26.0
 
Sept. 13, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (28) 0.23 ppb (3) N/A 4.2 μg/m3 (18) 28.0
 
Sept. 13, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (25) 0.23 ppb (3) N/A 4.5 μg/m3 (19) 25.0
 
Sept. 13, 2021, midnight N/A N/A N/A N/A N/A N/A 36.0 ppb (34) 0.07 ppb (2) N/A 4.4 μg/m3 (19) 34.0
 
Sept. 12, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (34) 0.11 ppb (2) N/A 4.1 μg/m3 (18) 34.0
 
Sept. 12, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (28) 0.18 ppb (3) N/A 3.9 μg/m3 (17) 28.0