ID: 2374

AQSQID: 410670005

Site Name: Portland Near Road

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

Updated: Sept. 29, 2020, 4:41 p.m.

Location: Lake Oswego (Swest Bradbury Court), OR

Reporting: True, Located: True

Current AQI: 47.0

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. 29, 2020, 3 p.m. 50.3 ppb (47) 26.6 ppb (25) N/A 24.0 ppb (22) N/A N/A 15.0 ppb (12) N/A N/A 6.0 μg/m3 (25) 47.0
 
Sept. 29, 2020, 2 p.m. 123.6 ppb (104) 87.8 ppb (86) N/A 36.0 ppb (33) N/A N/A 4.0 ppb (3) N/A N/A 7.5 μg/m3 (31) 104.0
 
Sept. 29, 2020, noon 21.2 ppb (20) 6.6 ppb (6) N/A 15.0 ppb (14) N/A N/A 25.0 ppb (19) N/A N/A 5.0 μg/m3 (21) 21.0
 
Sept. 29, 2020, 11 a.m. 6.8 ppb (6) 0.4 ppb (0) N/A 6.0 ppb (6) N/A N/A 32.0 ppb (25) N/A N/A 4.9 μg/m3 (20) 25.0
 
Sept. 29, 2020, 10 a.m. 6.3 ppb (6) 0.5 ppb (0) N/A 6.0 ppb (6) N/A N/A 34.0 ppb (26) N/A N/A 4.8 μg/m3 (20) 26.0
 
Sept. 29, 2020, 9 a.m. 6.6 ppb (6) 0.4 ppb (0) N/A 6.0 ppb (6) N/A N/A 34.0 ppb (26) N/A N/A 4.7 μg/m3 (20) 26.0
 
Sept. 29, 2020, 8 a.m. 4.4 ppb (4) 0.0 ppb (0) N/A 4.0 ppb (4) N/A N/A 36.0 ppb (28) N/A N/A 4.5 μg/m3 (19) 28.0
 
Sept. 29, 2020, 7 a.m. 3.4 ppb (3) -0.1 ppb (0) N/A 4.0 ppb (4) N/A N/A 38.0 ppb (29) N/A N/A 4.2 μg/m3 (18) 29.0
 
Sept. 29, 2020, 6 a.m. 4.2 ppb (4) 0.1 ppb (0) N/A 4.0 ppb (4) N/A N/A 37.0 ppb (28) N/A N/A 4.0 μg/m3 (17) 28.0
 
Sept. 29, 2020, 4 a.m. 2.8 ppb (3) -0.1 ppb (0) N/A 3.0 ppb (3) N/A N/A 40.0 ppb (31) N/A N/A 3.4 μg/m3 (14) 31.0
 
Sept. 29, 2020, 2 a.m. 2.8 ppb (3) 0.0 ppb (0) N/A 3.0 ppb (3) N/A N/A 42.0 ppb (32) N/A N/A 3.7 μg/m3 (15) 32.0
 
Sept. 29, 2020, 1 a.m. 3.2 ppb (3) 0.0 ppb (0) N/A 3.0 ppb (3) N/A N/A 43.0 ppb (33) N/A N/A 3.9 μg/m3 (16) 33.0
 
Sept. 29, 2020, midnight 3.6 ppb (3) 0.4 ppb (0) N/A 3.0 ppb (3) N/A N/A 44.0 ppb (34) N/A N/A 4.4 μg/m3 (18) 34.0
 
Sept. 28, 2020, 11 p.m. 4.6 ppb (4) 1.0 ppb (1) N/A 4.0 ppb (4) N/A N/A 44.0 ppb (34) N/A N/A 5.1 μg/m3 (21) 34.0
 
Sept. 28, 2020, 10 p.m. 3.7 ppb (3) 0.7 ppb (1) N/A 3.0 ppb (3) N/A N/A 46.0 ppb (35) N/A N/A 6.2 μg/m3 (26) 35.0
 
Sept. 28, 2020, 8 p.m. 9.6 ppb (9) 3.5 ppb (3) N/A 6.0 ppb (6) N/A N/A 40.0 ppb (31) N/A N/A 6.0 μg/m3 (25) 31.0
 
Sept. 28, 2020, 7 p.m. 30.0 ppb (28) 15.0 ppb (14) N/A 15.0 ppb (14) N/A N/A 26.0 ppb (20) N/A N/A 5.5 μg/m3 (23) 28.0
 
Sept. 28, 2020, 6 p.m. 19.5 ppb (18) 9.2 ppb (9) N/A 10.0 ppb (9) N/A N/A 25.0 ppb (19) N/A N/A 4.9 μg/m3 (20) 20.0
 
Sept. 28, 2020, 5 p.m. 36.0 ppb (33) 19.8 ppb (18) N/A 16.0 ppb (15) N/A N/A 18.0 ppb (14) N/A N/A 4.4 μg/m3 (18) 33.0
 
Sept. 28, 2020, 4 p.m. 29.3 ppb (27) 14.3 ppb (13) N/A 15.0 ppb (14) N/A N/A 20.0 ppb (15) N/A N/A 3.8 μg/m3 (16) 27.0
 
Sept. 28, 2020, 2 p.m. 53.0 ppb (49) 32.9 ppb (30) N/A 20.0 ppb (19) N/A N/A 11.0 ppb (8) N/A N/A 4.3 μg/m3 (18) 49.0
 
Sept. 28, 2020, 1 p.m. 73.7 ppb (71) 47.3 ppb (44) N/A 26.0 ppb (24) N/A N/A 4.0 ppb (3) N/A N/A 4.5 μg/m3 (19) 71.0
 
Sept. 28, 2020, noon 55.5 ppb (52) 30.7 ppb (28) N/A 25.0 ppb (23) N/A N/A 6.0 ppb (5) N/A N/A 4.2 μg/m3 (18) 52.0
 
Sept. 28, 2020, 11 a.m. 33.5 ppb (31) 14.6 ppb (14) N/A 19.0 ppb (18) N/A N/A 9.0 ppb (7) N/A N/A 4.0 μg/m3 (17) 31.0
 
Sept. 28, 2020, 10 a.m. 19.4 ppb (18) 6.9 ppb (6) N/A 13.0 ppb (12) N/A N/A 10.0 ppb (8) N/A N/A 4.6 μg/m3 (19) 19.0
 
Sept. 28, 2020, 9 a.m. 21.2 ppb (20) 6.7 ppb (6) N/A 14.0 ppb (13) N/A N/A 8.0 ppb (6) N/A N/A 4.6 μg/m3 (19) 20.0
 
Sept. 28, 2020, 8 a.m. 11.0 ppb (10) 3.1 ppb (3) N/A 8.0 ppb (7) N/A N/A 10.0 ppb (8) N/A N/A 4.5 μg/m3 (19) 19.0
 
Sept. 28, 2020, 6 a.m. 7.9 ppb (7) 0.8 ppb (1) N/A 7.0 ppb (6) N/A N/A 14.0 ppb (11) N/A N/A 4.5 μg/m3 (19) 19.0
 
Sept. 28, 2020, 5 a.m. 12.3 ppb (11) 1.1 ppb (1) N/A 11.0 ppb (10) N/A N/A 16.0 ppb (12) N/A N/A 4.4 μg/m3 (18) 18.0
 
Sept. 28, 2020, 4 a.m. 26.2 ppb (24) 7.3 ppb (7) N/A 19.0 ppb (18) N/A N/A 9.0 ppb (7) N/A N/A 4.8 μg/m3 (20) 24.0
 
Sept. 28, 2020, 3 a.m. 27.5 ppb (25) 11.1 ppb (10) N/A 16.0 ppb (15) N/A N/A 13.0 ppb (10) N/A N/A 4.6 μg/m3 (19) 25.0
 
Sept. 28, 2020, 2 a.m. 25.1 ppb (23) 11.2 ppb (10) N/A 14.0 ppb (13) N/A N/A 16.0 ppb (12) N/A N/A 4.3 μg/m3 (18) 23.0
 
Sept. 28, 2020, 1 a.m. 22.8 ppb (21) 10.6 ppb (10) N/A 12.0 ppb (11) N/A N/A 20.0 ppb (15) N/A N/A 4.0 μg/m3 (17) 21.0
 
Sept. 28, 2020, midnight 17.5 ppb (16) 7.5 ppb (7) N/A 10.0 ppb (9) N/A N/A 26.0 ppb (20) N/A N/A 3.8 μg/m3 (16) 20.0
 
Sept. 27, 2020, 10 p.m. 15.1 ppb (14) 7.5 ppb (7) N/A 7.0 ppb (6) N/A N/A 31.0 ppb (24) N/A N/A 3.7 μg/m3 (15) 24.0
 
Sept. 27, 2020, 9 p.m. 13.0 ppb (12) 6.6 ppb (6) N/A 6.0 ppb (6) N/A N/A 32.0 ppb (25) N/A N/A 3.7 μg/m3 (15) 25.0
 
Sept. 27, 2020, 8 p.m. 13.7 ppb (13) 6.5 ppb (6) N/A 7.0 ppb (6) N/A N/A 31.0 ppb (24) N/A N/A 3.6 μg/m3 (15) 24.0
 
Sept. 27, 2020, 6 p.m. 15.2 ppb (14) 8.2 ppb (8) N/A 7.0 ppb (6) N/A N/A 27.0 ppb (21) N/A N/A 4.0 μg/m3 (17) 21.0
 
Sept. 27, 2020, 5 p.m. 9.8 ppb (9) 4.7 ppb (4) N/A 5.0 ppb (5) N/A N/A 23.0 ppb (18) N/A N/A 4.3 μg/m3 (18) 18.0
 
Sept. 27, 2020, 4 p.m. 16.7 ppb (15) 9.7 ppb (9) N/A 7.0 ppb (6) N/A N/A 13.0 ppb (10) N/A N/A 5.9 μg/m3 (25) 25.0
 
Sept. 27, 2020, 3 p.m. 32.2 ppb (30) 24.6 ppb (23) N/A 8.0 ppb (7) N/A N/A 3.0 ppb (2) N/A N/A 7.0 μg/m3 (29) 30.0
 
Sept. 27, 2020, 2 p.m. 22.2 ppb (21) 17.0 ppb (16) N/A 5.0 ppb (5) N/A N/A 2.0 ppb (2) N/A N/A 6.2 μg/m3 (26) 26.0
 
Sept. 27, 2020, 1 p.m. 21.4 ppb (20) 15.6 ppb (14) N/A 6.0 ppb (6) N/A N/A 2.0 ppb (2) N/A N/A 5.8 μg/m3 (24) 24.0
 
Sept. 27, 2020, noon 16.5 ppb (15) 9.8 ppb (9) N/A 7.0 ppb (6) N/A N/A 1.0 ppb (1) N/A N/A 5.7 μg/m3 (24) 24.0
 
Sept. 27, 2020, 11 a.m. 22.8 ppb (21) 14.9 ppb (14) N/A 8.0 ppb (7) N/A N/A 2.0 ppb (2) N/A N/A 7.0 μg/m3 (29) 29.0
 
Sept. 27, 2020, 10 a.m. 28.0 ppb (26) 19.9 ppb (18) N/A 8.0 ppb (7) N/A N/A 2.0 ppb (2) N/A N/A 6.0 μg/m3 (25) 26.0
 
Sept. 27, 2020, 9 a.m. 19.4 ppb (18) 11.8 ppb (11) N/A 8.0 ppb (7) N/A N/A 1.0 ppb (1) N/A N/A 5.7 μg/m3 (24) 24.0
 
Sept. 27, 2020, 8 a.m. 9.6 ppb (9) 2.2 ppb (2) N/A 7.0 ppb (6) N/A N/A 3.0 ppb (2) N/A N/A 5.6 μg/m3 (23) 23.0
 
Sept. 27, 2020, 7 a.m. 8.9 ppb (8) 1.3 ppb (1) N/A 8.0 ppb (7) N/A N/A 3.0 ppb (2) N/A N/A 5.9 μg/m3 (25) 25.0
 
Sept. 27, 2020, 6 a.m. 10.6 ppb (10) 1.5 ppb (1) N/A 9.0 ppb (8) N/A N/A 3.0 ppb (2) N/A N/A 6.5 μg/m3 (27) 27.0
 
Sept. 27, 2020, 5 a.m. 11.9 ppb (11) 2.0 ppb (2) N/A 10.0 ppb (9) N/A N/A 5.0 ppb (4) N/A N/A 7.0 μg/m3 (29) 29.0
 
Sept. 27, 2020, 4 a.m. 14.6 ppb (14) 3.6 ppb (3) N/A 11.0 ppb (10) N/A N/A 11.0 ppb (8) N/A N/A 5.5 μg/m3 (23) 23.0
 
Sept. 27, 2020, 3 a.m. 22.9 ppb (21) 9.6 ppb (9) N/A 13.0 ppb (12) N/A N/A 18.0 ppb (14) N/A N/A 3.7 μg/m3 (15) 21.0
 
Sept. 27, 2020, 2 a.m. 24.6 ppb (23) 10.7 ppb (10) N/A 14.0 ppb (13) N/A N/A 19.0 ppb (15) N/A N/A 3.6 μg/m3 (15) 23.0
 
Sept. 27, 2020, 1 a.m. 18.3 ppb (17) 8.7 ppb (8) N/A 9.0 ppb (8) N/A N/A 23.0 ppb (18) N/A N/A 3.2 μg/m3 (13) 18.0
 
Sept. 27, 2020, midnight 16.9 ppb (16) 8.8 ppb (8) N/A 8.0 ppb (7) N/A N/A 24.0 ppb (18) N/A N/A 3.2 μg/m3 (13) 18.0
 
Sept. 26, 2020, 11 p.m. 18.2 ppb (17) 9.2 ppb (9) N/A 9.0 ppb (8) N/A N/A 23.0 ppb (18) N/A N/A 3.4 μg/m3 (14) 18.0
 
Sept. 26, 2020, 10 p.m. 16.9 ppb (16) 8.8 ppb (8) N/A 8.0 ppb (7) N/A N/A 24.0 ppb (18) N/A N/A 3.4 μg/m3 (14) 18.0
 
Sept. 26, 2020, 9 p.m. 16.7 ppb (15) 8.5 ppb (8) N/A 8.0 ppb (7) N/A N/A 24.0 ppb (18) N/A N/A 3.4 μg/m3 (14) 18.0
 
Sept. 26, 2020, 8 p.m. 16.0 ppb (15) 8.7 ppb (8) N/A 7.0 ppb (6) N/A N/A 25.0 ppb (19) N/A N/A 3.4 μg/m3 (14) 19.0
 
Sept. 26, 2020, 7 p.m. 13.7 ppb (13) 6.9 ppb (6) N/A 7.0 ppb (6) N/A N/A 24.0 ppb (18) N/A N/A 3.5 μg/m3 (15) 18.0
 
Sept. 26, 2020, 6 p.m. 14.4 ppb (13) 7.6 ppb (7) N/A 7.0 ppb (6) N/A N/A 21.0 ppb (16) N/A N/A 3.7 μg/m3 (15) 16.0
 
Sept. 26, 2020, 5 p.m. N/A N/A N/A N/A N/A N/A 15.0 ppb (12) N/A N/A 4.1 μg/m3 (17) 17.0
 
Sept. 26, 2020, 4 p.m. 18.2 ppb (17) 9.8 ppb (9) N/A 9.0 ppb (8) N/A N/A 11.0 ppb (8) N/A N/A 4.2 μg/m3 (18) 18.0
 
Sept. 26, 2020, 3 p.m. 11.0 ppb (10) 3.8 ppb (4) N/A 7.0 ppb (6) N/A N/A 7.0 ppb (5) N/A N/A 4.7 μg/m3 (20) 20.0
 
Sept. 26, 2020, 2 p.m. 24.1 ppb (22) 16.6 ppb (15) N/A 8.0 ppb (7) N/A N/A 2.0 ppb (2) N/A N/A 4.5 μg/m3 (19) 22.0
 
Sept. 26, 2020, 1 p.m. 32.3 ppb (30) 24.9 ppb (23) N/A 7.0 ppb (6) N/A N/A 2.0 ppb (2) N/A N/A 4.3 μg/m3 (18) 30.0
 
Sept. 26, 2020, noon 30.0 ppb (28) 21.5 ppb (20) N/A 8.0 ppb (7) N/A N/A 2.0 ppb (2) N/A N/A 4.4 μg/m3 (18) 28.0
 
Sept. 26, 2020, 11 a.m. 5.6 ppb (5) 2.3 ppb (2) N/A 3.0 ppb (3) N/A N/A 3.0 ppb (2) N/A N/A 4.0 μg/m3 (17) 17.0
 
Sept. 26, 2020, 10 a.m. 5.5 ppb (5) 2.1 ppb (2) N/A 3.0 ppb (3) N/A N/A 2.0 ppb (2) N/A N/A 4.3 μg/m3 (18) 18.0
 
Sept. 26, 2020, 9 a.m. 4.0 ppb (4) 0.6 ppb (1) N/A 3.0 ppb (3) N/A N/A 3.0 ppb (2) N/A N/A 4.4 μg/m3 (18) 18.0
 
Sept. 26, 2020, 8 a.m. 4.0 ppb (4) 0.3 ppb (0) N/A 4.0 ppb (4) N/A N/A 7.0 ppb (5) N/A N/A 4.3 μg/m3 (18) 18.0
 
Sept. 26, 2020, 7 a.m. 4.8 ppb (4) 0.3 ppb (0) N/A 5.0 ppb (5) N/A N/A 12.0 ppb (9) N/A N/A 3.7 μg/m3 (15) 15.0
 
Sept. 26, 2020, 5 a.m. 13.4 ppb (12) 6.2 ppb (6) N/A 7.0 ppb (6) N/A N/A 19.0 ppb (15) N/A N/A 3.8 μg/m3 (16) 16.0
 
Sept. 26, 2020, 4 a.m. 17.8 ppb (16) 7.3 ppb (7) N/A 11.0 ppb (10) N/A N/A 12.0 ppb (9) N/A N/A 4.6 μg/m3 (19) 19.0
 
Sept. 26, 2020, 3 a.m. 14.4 ppb (13) 3.7 ppb (3) N/A 11.0 ppb (10) N/A N/A 10.0 ppb (8) N/A N/A 5.0 μg/m3 (21) 21.0
 
Sept. 26, 2020, 2 a.m. 21.9 ppb (20) 9.2 ppb (9) N/A 13.0 ppb (12) N/A N/A 9.0 ppb (7) N/A N/A 4.7 μg/m3 (20) 20.0
 
Sept. 26, 2020, 1 a.m. 18.4 ppb (17) 6.3 ppb (6) N/A 12.0 ppb (11) N/A N/A 10.0 ppb (8) N/A N/A 4.5 μg/m3 (19) 19.0
 
Sept. 26, 2020, midnight 30.3 ppb (28) 15.2 ppb (14) N/A 15.0 ppb (14) N/A N/A 9.0 ppb (7) N/A N/A 4.4 μg/m3 (18) 28.0
 
Sept. 25, 2020, 11 p.m. 34.9 ppb (32) 20.0 ppb (19) N/A 15.0 ppb (14) N/A N/A 10.0 ppb (8) N/A N/A 4.0 μg/m3 (17) 32.0
 
Sept. 25, 2020, 10 p.m. 25.3 ppb (23) 12.8 ppb (12) N/A 13.0 ppb (12) N/A N/A 13.0 ppb (10) N/A N/A 4.0 μg/m3 (17) 23.0
 
Sept. 25, 2020, 9 p.m. 14.0 ppb (13) 5.4 ppb (5) N/A 9.0 ppb (8) N/A N/A 17.0 ppb (13) N/A N/A 4.4 μg/m3 (18) 18.0
 
Sept. 25, 2020, 8 p.m. 16.1 ppb (15) 7.2 ppb (7) N/A 9.0 ppb (8) N/A N/A 18.0 ppb (14) N/A N/A 5.0 μg/m3 (21) 21.0
 
Sept. 25, 2020, 7 p.m. 15.1 ppb (14) 6.9 ppb (6) N/A 8.0 ppb (7) N/A N/A 19.0 ppb (15) N/A N/A 5.4 μg/m3 (23) 23.0
 
Sept. 25, 2020, 6 p.m. 11.8 ppb (11) 4.7 ppb (4) N/A 7.0 ppb (6) N/A N/A 20.0 ppb (15) N/A N/A 6.3 μg/m3 (26) 26.0
 
Sept. 25, 2020, 5 p.m. 14.3 ppb (13) 5.9 ppb (5) N/A 9.0 ppb (8) N/A N/A 19.0 ppb (15) N/A N/A 5.8 μg/m3 (24) 24.0
 
Sept. 25, 2020, 4 p.m. 8.8 ppb (8) 3.1 ppb (3) N/A 6.0 ppb (6) N/A N/A 21.0 ppb (16) N/A N/A 5.4 μg/m3 (23) 23.0
 
Sept. 25, 2020, 3 p.m. 10.4 ppb (10) 3.2 ppb (3) N/A 7.0 ppb (6) N/A N/A 19.0 ppb (15) N/A N/A 5.7 μg/m3 (24) 24.0
 
Sept. 25, 2020, 2 p.m. 2.8 ppb (3) 0.4 ppb (0) N/A 2.0 ppb (2) N/A N/A 23.0 ppb (18) N/A N/A 5.5 μg/m3 (23) 23.0
 
Sept. 25, 2020, 1 p.m. 2.1 ppb (2) 0.1 ppb (0) N/A 2.0 ppb (2) N/A N/A 23.0 ppb (18) N/A N/A 5.4 μg/m3 (23) 23.0
 
Sept. 25, 2020, noon 5.3 ppb (5) 0.7 ppb (1) N/A 5.0 ppb (5) N/A N/A 20.0 ppb (15) N/A N/A 5.5 μg/m3 (23) 23.0
 
Sept. 25, 2020, 11 a.m. 5.0 ppb (5) 0.5 ppb (0) N/A 4.0 ppb (4) N/A N/A 18.0 ppb (14) N/A N/A 5.5 μg/m3 (23) 23.0
 
Sept. 25, 2020, 10 a.m. 2.1 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A N/A 17.0 ppb (13) N/A N/A 5.7 μg/m3 (24) 24.0
 
Sept. 25, 2020, 9 a.m. 2.0 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A N/A 16.0 ppb (12) N/A N/A 5.8 μg/m3 (24) 24.0
 
Sept. 25, 2020, 8 a.m. 1.7 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A N/A 18.0 ppb (14) N/A N/A 5.9 μg/m3 (25) 25.0
 
Sept. 25, 2020, 7 a.m. 2.0 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A N/A 17.0 ppb (13) N/A N/A 5.8 μg/m3 (24) 24.0
 
Sept. 25, 2020, 6 a.m. 4.9 ppb (5) 0.2 ppb (0) N/A 5.0 ppb (5) N/A N/A 13.0 ppb (10) N/A N/A 5.6 μg/m3 (23) 23.0
 
Sept. 25, 2020, 5 a.m. 6.1 ppb (6) 0.1 ppb (0) N/A 6.0 ppb (6) N/A N/A 15.0 ppb (12) N/A N/A 5.7 μg/m3 (24) 24.0
 
Sept. 25, 2020, 4 a.m. 5.3 ppb (5) 0.1 ppb (0) N/A 5.0 ppb (5) N/A N/A 19.0 ppb (15) N/A N/A 5.5 μg/m3 (23) 23.0
 
Sept. 25, 2020, 3 a.m. 4.9 ppb (5) 0.1 ppb (0) N/A 5.0 ppb (5) N/A N/A 21.0 ppb (16) N/A N/A 5.4 μg/m3 (23) 23.0
 
Sept. 25, 2020, 2 a.m. 5.3 ppb (5) 0.3 ppb (0) N/A 5.0 ppb (5) N/A N/A 24.0 ppb (18) N/A N/A 5.3 μg/m3 (22) 22.0
 
Sept. 25, 2020, 1 a.m. 6.2 ppb (6) 1.1 ppb (1) N/A 5.0 ppb (5) N/A N/A 26.0 ppb (20) N/A N/A 5.3 μg/m3 (22) 22.0
 
Sept. 25, 2020, midnight 18.7 ppb (17) 7.6 ppb (7) N/A 11.0 ppb (10) N/A N/A 23.0 ppb (18) N/A N/A 5.2 μg/m3 (22) 22.0
 
Sept. 24, 2020, 11 p.m. 19.1 ppb (18) 8.8 ppb (8) N/A 10.0 ppb (9) N/A N/A 24.0 ppb (18) N/A N/A 4.9 μg/m3 (20) 20.0
 
Sept. 24, 2020, 10 p.m. 21.2 ppb (20) 10.7 ppb (10) N/A 11.0 ppb (10) N/A N/A 23.0 ppb (18) N/A N/A 5.4 μg/m3 (23) 23.0
 
Sept. 24, 2020, 9 p.m. 16.8 ppb (16) 8.4 ppb (8) N/A 8.0 ppb (7) N/A N/A 25.0 ppb (19) N/A N/A 5.0 μg/m3 (21) 21.0
 
Sept. 24, 2020, 8 p.m. 21.7 ppb (20) 12.6 ppb (12) N/A 9.0 ppb (8) N/A N/A 24.0 ppb (18) N/A N/A 5.1 μg/m3 (21) 21.0
 
Sept. 24, 2020, 7 p.m. 30.6 ppb (28) 17.6 ppb (16) N/A 13.0 ppb (12) N/A N/A 20.0 ppb (15) N/A N/A 6.3 μg/m3 (26) 28.0
 
Sept. 24, 2020, 6 p.m. 30.4 ppb (28) 16.4 ppb (15) N/A 14.0 ppb (13) N/A N/A 19.0 ppb (15) N/A N/A 6.7 μg/m3 (28) 28.0
 
Sept. 24, 2020, 4 p.m. 18.0 ppb (17) 8.8 ppb (8) N/A 9.0 ppb (8) N/A N/A 20.0 ppb (15) N/A N/A 5.2 μg/m3 (22) 22.0
 
Sept. 24, 2020, 3 p.m. 9.2 ppb (9) 1.9 ppb (2) N/A 7.0 ppb (6) N/A N/A 18.0 ppb (14) N/A N/A 4.8 μg/m3 (20) 20.0
 
Sept. 24, 2020, 2 p.m. 28.7 ppb (27) 10.3 ppb (10) N/A 18.0 ppb (17) N/A N/A 10.0 ppb (8) N/A N/A 4.8 μg/m3 (20) 27.0
 
Sept. 24, 2020, 1 p.m. 28.1 ppb (26) 9.1 ppb (8) N/A 19.0 ppb (18) N/A N/A 9.0 ppb (7) N/A N/A 5.0 μg/m3 (21) 26.0
 
Sept. 24, 2020, noon 28.4 ppb (26) 11.5 ppb (11) N/A 17.0 ppb (16) N/A N/A 9.0 ppb (7) N/A N/A 4.7 μg/m3 (20) 26.0
 
Sept. 24, 2020, 11 a.m. 8.7 ppb (8) 1.3 ppb (1) N/A 7.0 ppb (6) N/A N/A 19.0 ppb (15) N/A N/A 4.3 μg/m3 (18) 18.0
 
Sept. 24, 2020, 10 a.m. 13.0 ppb (12) 2.4 ppb (2) N/A 11.0 ppb (10) N/A N/A 17.0 ppb (13) N/A N/A 4.5 μg/m3 (19) 19.0
 
Sept. 24, 2020, 9 a.m. 10.3 ppb (10) 2.2 ppb (2) N/A 8.0 ppb (7) N/A N/A 18.0 ppb (14) N/A N/A 4.0 μg/m3 (17) 17.0
 
Sept. 24, 2020, 7 a.m. 11.4 ppb (11) 2.6 ppb (2) N/A 9.0 ppb (8) N/A N/A 18.0 ppb (14) N/A N/A 4.0 μg/m3 (17) 17.0
 
Sept. 24, 2020, 6 a.m. 3.2 ppb (3) 0.0 ppb (0) N/A 3.0 ppb (3) N/A N/A 25.0 ppb (19) N/A N/A 3.8 μg/m3 (16) 19.0
 
Sept. 24, 2020, 4 a.m. 5.8 ppb (5) 0.5 ppb (0) N/A 5.0 ppb (5) N/A N/A 28.0 ppb (22) N/A N/A 2.9 μg/m3 (12) 22.0
 
Sept. 24, 2020, 3 a.m. 10.0 ppb (9) 1.3 ppb (1) N/A 9.0 ppb (8) N/A N/A 24.0 ppb (18) N/A N/A 3.0 μg/m3 (12) 18.0
 
Sept. 24, 2020, 2 a.m. 20.6 ppb (19) 6.5 ppb (6) N/A 14.0 ppb (13) N/A N/A 16.0 ppb (12) N/A N/A 3.4 μg/m3 (14) 19.0
 
Sept. 24, 2020, 1 a.m. 25.0 ppb (23) 7.2 ppb (7) N/A 18.0 ppb (17) N/A N/A 14.0 ppb (11) N/A N/A 4.4 μg/m3 (18) 23.0
 
Sept. 24, 2020, midnight 23.2 ppb (21) 12.5 ppb (12) N/A 11.0 ppb (10) N/A N/A 15.0 ppb (12) N/A N/A 3.7 μg/m3 (15) 21.0
 
Sept. 23, 2020, 11 p.m. 16.5 ppb (15) 7.0 ppb (6) N/A 9.0 ppb (8) N/A N/A 10.0 ppb (8) N/A N/A 5.2 μg/m3 (22) 22.0
 
Sept. 23, 2020, 10 p.m. 15.7 ppb (15) 4.7 ppb (4) N/A 11.0 ppb (10) N/A N/A 10.0 ppb (8) N/A N/A 10.8 μg/m3 (45) 45.0
 
Sept. 23, 2020, 9 p.m. 50.9 ppb (47) 28.0 ppb (26) N/A 23.0 ppb (21) N/A N/A 9.0 ppb (7) N/A N/A 17.2 μg/m3 (61) 61.0
 
Sept. 23, 2020, 8 p.m. 46.5 ppb (43) 26.3 ppb (24) N/A 20.0 ppb (19) N/A N/A 12.0 ppb (9) N/A N/A 21.8 μg/m3 (71) 71.0
 
Sept. 23, 2020, 7 p.m. 10.4 ppb (10) 3.0 ppb (3) N/A 7.0 ppb (6) N/A N/A 21.0 ppb (16) N/A N/A 20.7 μg/m3 (69) 69.0
 
Sept. 23, 2020, 6 p.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (16) N/A N/A 18.4 μg/m3 (64) 64.0
 
Sept. 23, 2020, 5 p.m. N/A N/A N/A N/A N/A N/A 15.0 ppb (12) N/A N/A 10.7 μg/m3 (45) 45.0
 
Sept. 23, 2020, 4 p.m. 10.4 ppb (10) 1.9 ppb (2) N/A 8.0 ppb (7) N/A N/A 13.0 ppb (10) N/A N/A 6.4 μg/m3 (27) 27.0
 
Sept. 23, 2020, 3 p.m. 18.3 ppb (17) 5.8 ppb (5) N/A 13.0 ppb (12) N/A N/A 9.0 ppb (7) N/A N/A 6.4 μg/m3 (27) 27.0
 
Sept. 23, 2020, 2 p.m. 19.1 ppb (18) 6.0 ppb (6) N/A 13.0 ppb (12) N/A N/A 6.0 ppb (5) N/A N/A 7.1 μg/m3 (30) 30.0
 
Sept. 23, 2020, 1 p.m. 17.3 ppb (16) 5.8 ppb (5) N/A 11.0 ppb (10) N/A N/A 6.0 ppb (5) N/A N/A 6.3 μg/m3 (26) 26.0
 
Sept. 23, 2020, noon 17.4 ppb (16) 4.8 ppb (4) N/A 13.0 ppb (12) N/A N/A 8.0 ppb (6) N/A N/A 5.5 μg/m3 (23) 23.0
 
Sept. 23, 2020, 11 a.m. 22.5 ppb (21) 10.4 ppb (10) N/A 12.0 ppb (11) N/A N/A 12.0 ppb (9) N/A N/A 4.7 μg/m3 (20) 21.0
 
Sept. 23, 2020, 10 a.m. 4.2 ppb (4) 0.4 ppb (0) N/A 4.0 ppb (4) N/A N/A 22.0 ppb (17) N/A N/A 4.2 μg/m3 (18) 18.0
 
Sept. 23, 2020, 9 a.m. 3.1 ppb (3) 0.1 ppb (0) N/A 3.0 ppb (3) N/A N/A 22.0 ppb (17) N/A N/A 3.7 μg/m3 (15) 17.0
 
Sept. 23, 2020, 8 a.m. 5.2 ppb (5) 0.3 ppb (0) N/A 5.0 ppb (5) N/A N/A 17.0 ppb (13) N/A N/A 3.8 μg/m3 (16) 16.0
 
Sept. 23, 2020, 6 a.m. 5.7 ppb (5) 0.1 ppb (0) N/A 6.0 ppb (6) N/A N/A 18.0 ppb (14) N/A N/A 4.6 μg/m3 (19) 19.0
 
Sept. 23, 2020, 5 a.m. 7.3 ppb (7) 0.1 ppb (0) N/A 7.0 ppb (6) N/A N/A 19.0 ppb (15) N/A N/A 4.7 μg/m3 (20) 20.0
 
Sept. 23, 2020, 4 a.m. 19.2 ppb (18) 1.3 ppb (1) N/A 18.0 ppb (17) N/A N/A 10.0 ppb (8) N/A N/A 4.8 μg/m3 (20) 20.0
 
Sept. 23, 2020, 3 a.m. 13.1 ppb (12) 0.8 ppb (1) N/A 12.0 ppb (11) N/A N/A 17.0 ppb (13) N/A N/A 4.0 μg/m3 (17) 17.0
 
Sept. 23, 2020, 2 a.m. 10.6 ppb (10) 0.2 ppb (0) N/A 10.0 ppb (9) N/A N/A 24.0 ppb (18) N/A N/A 3.9 μg/m3 (16) 18.0
 
Sept. 23, 2020, midnight 32.1 ppb (30) 14.3 ppb (13) N/A 18.0 ppb (17) N/A N/A 21.0 ppb (16) N/A N/A 4.0 μg/m3 (17) 30.0
 
Sept. 22, 2020, 11 p.m. 28.0 ppb (26) 12.0 ppb (11) N/A 16.0 ppb (15) N/A N/A 24.0 ppb (18) N/A N/A 3.6 μg/m3 (15) 26.0
 
Sept. 22, 2020, 10 p.m. 24.2 ppb (22) 12.1 ppb (11) N/A 12.0 ppb (11) N/A N/A 28.0 ppb (22) N/A N/A 3.4 μg/m3 (14) 22.0
 
Sept. 22, 2020, 6 p.m. 21.6 ppb (20) 12.7 ppb (12) N/A 9.0 ppb (8) N/A N/A 17.0 ppb (13) N/A N/A 3.5 μg/m3 (15) 20.0
 
Sept. 22, 2020, 5 p.m. 24.6 ppb (23) 14.9 ppb (14) N/A 10.0 ppb (9) N/A N/A 14.0 ppb (11) N/A N/A 3.7 μg/m3 (15) 23.0
 
Sept. 22, 2020, 4 p.m. 45.5 ppb (42) 30.3 ppb (28) N/A 15.0 ppb (14) N/A N/A 8.0 ppb (6) N/A N/A 3.8 μg/m3 (16) 42.0
 
Sept. 22, 2020, 3 p.m. 28.6 ppb (26) 16.2 ppb (15) N/A 13.0 ppb (12) N/A N/A 9.0 ppb (7) N/A N/A 3.7 μg/m3 (15) 26.0
 
Sept. 22, 2020, 2 p.m. 37.3 ppb (35) 21.4 ppb (20) N/A 16.0 ppb (15) N/A N/A 5.0 ppb (4) N/A N/A 3.6 μg/m3 (15) 35.0
 
Sept. 22, 2020, 1 p.m. 29.7 ppb (28) 15.5 ppb (14) N/A 14.0 ppb (13) N/A N/A 5.0 ppb (4) N/A N/A 3.8 μg/m3 (16) 28.0
 
Sept. 22, 2020, noon 6.5 ppb (6) 0.6 ppb (1) N/A 6.0 ppb (6) N/A N/A 11.0 ppb (8) N/A N/A 3.2 μg/m3 (13) 13.0
 
Sept. 22, 2020, 11 a.m. 5.5 ppb (5) 0.3 ppb (0) N/A 5.0 ppb (5) N/A N/A 13.0 ppb (10) N/A N/A 3.4 μg/m3 (14) 14.0
 
Sept. 22, 2020, 10 a.m. 6.4 ppb (6) 0.5 ppb (0) N/A 6.0 ppb (6) N/A N/A 11.0 ppb (8) N/A N/A 4.0 μg/m3 (17) 17.0
 
Sept. 22, 2020, 9 a.m. 4.6 ppb (4) 0.2 ppb (0) N/A 4.0 ppb (4) N/A N/A 12.0 ppb (9) N/A N/A 4.4 μg/m3 (18) 18.0
 
Sept. 22, 2020, 8 a.m. 6.2 ppb (6) 0.1 ppb (0) N/A 6.0 ppb (6) N/A N/A 10.0 ppb (8) N/A N/A 5.6 μg/m3 (23) 23.0
 
Sept. 22, 2020, 7 a.m. 8.3 ppb (8) 0.5 ppb (0) N/A 8.0 ppb (7) N/A N/A 9.0 ppb (7) N/A N/A 6.8 μg/m3 (28) 28.0
 
Sept. 22, 2020, 6 a.m. 12.7 ppb (12) 2.0 ppb (2) N/A 11.0 ppb (10) N/A N/A 3.0 ppb (2) N/A N/A 7.8 μg/m3 (32) 32.0
 
Sept. 22, 2020, 5 a.m. 11.8 ppb (11) 1.2 ppb (1) N/A 11.0 ppb (10) N/A N/A 6.0 ppb (5) N/A N/A 8.3 μg/m3 (35) 35.0
 
Sept. 22, 2020, 4 a.m. 16.3 ppb (15) 5.0 ppb (5) N/A 11.0 ppb (10) N/A N/A 13.0 ppb (10) N/A N/A 8.8 μg/m3 (37) 37.0
 
Sept. 22, 2020, 3 a.m. 23.1 ppb (21) 10.1 ppb (9) N/A 13.0 ppb (12) N/A N/A 15.0 ppb (12) N/A N/A 7.8 μg/m3 (32) 32.0
 
Sept. 22, 2020, 2 a.m. 23.6 ppb (22) 7.4 ppb (7) N/A 16.0 ppb (15) N/A N/A 18.0 ppb (14) N/A N/A 7.7 μg/m3 (32) 32.0
 
Sept. 22, 2020, 1 a.m. 22.4 ppb (21) 7.6 ppb (7) N/A 15.0 ppb (14) N/A N/A 21.0 ppb (16) N/A N/A 6.7 μg/m3 (28) 28.0
 
Sept. 21, 2020, 11 p.m. 20.0 ppb (19) 8.5 ppb (8) N/A 11.0 ppb (10) N/A N/A 32.0 ppb (25) N/A N/A 8.8 μg/m3 (37) 37.0
 
Sept. 21, 2020, 10 p.m. 11.4 ppb (11) 4.4 ppb (4) N/A 7.0 ppb (6) N/A N/A 35.0 ppb (27) N/A N/A 12.7 μg/m3 (51) 51.0