AQSQID: 410670005

Site Name: Portland Near Road

Location: Lake Oswego (Swest Bradbury Court), OR

Reporting: True, Located: True

Current AQI: 102.0

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
Feb. 13, 2020, 5 a.m. 40.4 ppb (37) 23.1 ppb (21) N/A 17.0 ppb (16) N/A N/A 0.0 ppb (0) N/A N/A 21.4 μg/m3 (70) 70.0
 
Feb. 13, 2020, 4 a.m. 36.9 ppb (34) 17.4 ppb (16) N/A 20.0 ppb (19) N/A N/A 0.0 ppb (0) N/A N/A 18.3 μg/m3 (63) 63.0
 
Feb. 13, 2020, 3 a.m. 36.1 ppb (33) 13.1 ppb (12) N/A 23.0 ppb (21) N/A N/A 0.0 ppb (0) N/A N/A 10.6 μg/m3 (44) 44.0
 
Feb. 13, 2020, 2 a.m. 36.6 ppb (34) 11.2 ppb (10) N/A 25.0 ppb (23) N/A N/A 3.0 ppb (2) N/A N/A 7.3 μg/m3 (30) 34.0
 
Feb. 13, 2020, 1 a.m. 15.9 ppb (15) 1.7 ppb (2) N/A 14.0 ppb (13) N/A N/A 17.0 ppb (13) N/A N/A 5.4 μg/m3 (23) 23.0
 
Feb. 13, 2020, midnight 38.8 ppb (36) 20.3 ppb (19) N/A 18.0 ppb (17) N/A N/A 17.0 ppb (13) N/A N/A 5.4 μg/m3 (23) 36.0
 
Feb. 12, 2020, 11 p.m. 40.5 ppb (38) 23.6 ppb (22) N/A 17.0 ppb (16) N/A N/A 16.0 ppb (12) N/A N/A 6.8 μg/m3 (28) 38.0
 
Feb. 12, 2020, 10 p.m. 39.4 ppb (36) 23.7 ppb (22) N/A 16.0 ppb (15) N/A N/A 15.0 ppb (12) N/A N/A 8.0 μg/m3 (33) 36.0
 
Feb. 12, 2020, 9 p.m. 47.4 ppb (44) 30.8 ppb (29) N/A 17.0 ppb (16) N/A N/A 16.0 ppb (12) N/A N/A 9.0 μg/m3 (38) 44.0
 
Feb. 12, 2020, 8 p.m. 56.8 ppb (53) 37.0 ppb (34) N/A 20.0 ppb (19) N/A N/A 12.0 ppb (9) N/A N/A 11.3 μg/m3 (47) 53.0
 
Feb. 12, 2020, 7 p.m. 63.6 ppb (60) 43.9 ppb (41) N/A 20.0 ppb (19) N/A N/A 8.0 ppb (6) N/A N/A 14.6 μg/m3 (56) 60.0
 
Feb. 12, 2020, 6 p.m. 82.3 ppb (80) 60.5 ppb (57) N/A 22.0 ppb (20) N/A N/A 4.0 ppb (3) N/A N/A 20.1 μg/m3 (67) 80.0
 
Feb. 12, 2020, 5 p.m. 87.4 ppb (86) 65.5 ppb (62) N/A 22.0 ppb (20) N/A N/A 2.0 ppb (2) N/A N/A 22.0 μg/m3 (71) 86.0
 
Feb. 12, 2020, 4 p.m. 91.6 ppb (90) 67.7 ppb (65) N/A 24.0 ppb (22) N/A N/A 2.0 ppb (2) N/A N/A 17.8 μg/m3 (62) 90.0
 
Feb. 12, 2020, 3 p.m. 71.7 ppb (69) 48.0 ppb (44) N/A 24.0 ppb (22) N/A N/A 5.0 ppb (4) N/A N/A 15.6 μg/m3 (58) 69.0
 
Feb. 12, 2020, 2 p.m. 75.1 ppb (72) 50.1 ppb (46) N/A 25.0 ppb (23) N/A N/A 4.0 ppb (3) N/A N/A 15.4 μg/m3 (57) 72.0
 
Feb. 12, 2020, 1 p.m. 50.7 ppb (47) 29.5 ppb (27) N/A 21.0 ppb (19) N/A N/A 7.0 ppb (5) N/A N/A 11.6 μg/m3 (48) 48.0
 
Feb. 12, 2020, noon 33.4 ppb (31) 15.8 ppb (15) N/A 18.0 ppb (17) N/A N/A 5.0 ppb (4) N/A N/A 15.7 μg/m3 (58) 58.0
 
Feb. 12, 2020, 11 a.m. 60.0 ppb (56) 44.1 ppb (41) N/A 16.0 ppb (15) N/A N/A 0.0 ppb (0) N/A N/A 25.5 μg/m3 (79) 79.0
 
Feb. 12, 2020, 10 a.m. 36.8 ppb (34) 25.5 ppb (24) N/A 11.0 ppb (10) N/A N/A 0.0 ppb (0) N/A N/A 26.5 μg/m3 (81) 81.0
 
Feb. 12, 2020, 9 a.m. 46.9 ppb (43) 33.1 ppb (31) N/A 14.0 ppb (13) N/A N/A 0.0 ppb (0) N/A N/A 27.5 μg/m3 (83) 83.0
 
Feb. 12, 2020, 8 a.m. 49.0 ppb (45) 34.9 ppb (32) N/A 14.0 ppb (13) N/A N/A 0.0 ppb (0) N/A N/A 26.7 μg/m3 (81) 81.0
 
Feb. 12, 2020, 7 a.m. 49.0 ppb (45) 35.6 ppb (33) N/A 13.0 ppb (12) N/A N/A 0.0 ppb (0) N/A N/A 24.6 μg/m3 (77) 77.0
 
Feb. 12, 2020, 6 a.m. 27.7 ppb (26) 16.0 ppb (15) N/A 12.0 ppb (11) N/A N/A 0.0 ppb (0) N/A N/A 25.5 μg/m3 (79) 79.0
 
Feb. 12, 2020, 5 a.m. 25.3 ppb (23) 13.0 ppb (12) N/A 12.0 ppb (11) N/A N/A 0.0 ppb (0) N/A N/A 26.7 μg/m3 (81) 81.0
 
Feb. 12, 2020, 4 a.m. 20.6 ppb (19) 7.3 ppb (7) N/A 13.0 ppb (12) N/A N/A 0.0 ppb (0) N/A N/A 25.7 μg/m3 (79) 79.0
 
Feb. 12, 2020, 3 a.m. 21.9 ppb (20) 7.6 ppb (7) N/A 14.0 ppb (13) N/A N/A 0.0 ppb (0) N/A N/A 27.0 μg/m3 (82) 82.0
 
Feb. 12, 2020, 2 a.m. 26.4 ppb (24) 11.8 ppb (11) N/A 15.0 ppb (14) N/A N/A 0.0 ppb (0) N/A N/A 22.8 μg/m3 (73) 73.0
 
Feb. 12, 2020, 1 a.m. 36.9 ppb (34) 20.5 ppb (19) N/A 16.0 ppb (15) N/A N/A 0.0 ppb (0) N/A N/A 17.7 μg/m3 (62) 62.0
 
Feb. 12, 2020, midnight 43.7 ppb (40) 27.0 ppb (25) N/A 17.0 ppb (16) N/A N/A 3.0 ppb (2) N/A N/A 16.8 μg/m3 (60) 60.0
 
Feb. 11, 2020, 11 p.m. 49.0 ppb (45) 33.3 ppb (31) N/A 16.0 ppb (15) N/A N/A 4.0 ppb (3) N/A N/A 18.7 μg/m3 (64) 64.0
 
Feb. 11, 2020, 10 p.m. 51.4 ppb (48) 36.4 ppb (34) N/A 15.0 ppb (14) N/A N/A 4.0 ppb (3) N/A N/A 21.3 μg/m3 (70) 70.0
 
Feb. 11, 2020, 9 p.m. 41.6 ppb (39) 27.7 ppb (26) N/A 14.0 ppb (13) N/A N/A 4.0 ppb (3) N/A N/A 18.9 μg/m3 (65) 65.0
 
Feb. 11, 2020, 8 p.m. 26.1 ppb (24) 15.5 ppb (14) N/A 11.0 ppb (10) N/A N/A 4.0 ppb (3) N/A N/A 18.5 μg/m3 (64) 64.0
 
Feb. 11, 2020, 7 p.m. 39.0 ppb (36) 26.7 ppb (25) N/A 12.0 ppb (11) N/A N/A 4.0 ppb (3) N/A N/A 16.6 μg/m3 (60) 60.0
 
Feb. 11, 2020, 6 p.m. 23.0 ppb (21) 13.7 ppb (13) N/A 9.0 ppb (8) N/A N/A 3.0 ppb (2) N/A N/A 15.9 μg/m3 (58) 58.0
 
Feb. 11, 2020, 5 p.m. 26.8 ppb (25) 16.0 ppb (15) N/A 11.0 ppb (10) N/A N/A 2.0 ppb (2) N/A N/A 15.3 μg/m3 (57) 57.0
 
Feb. 11, 2020, 4 p.m. 22.7 ppb (21) 12.7 ppb (12) N/A 10.0 ppb (9) N/A N/A 1.0 ppb (1) N/A N/A 14.5 μg/m3 (55) 55.0
 
Feb. 11, 2020, 3 p.m. 32.0 ppb (30) 21.7 ppb (20) N/A 10.0 ppb (9) N/A N/A 0.0 ppb (0) N/A N/A 13.3 μg/m3 (53) 53.0
 
Feb. 11, 2020, 2 p.m. 52.8 ppb (49) 42.8 ppb (40) N/A 10.0 ppb (9) N/A N/A 0.0 ppb (0) N/A N/A 10.8 μg/m3 (45) 49.0
 
Feb. 11, 2020, 1 p.m. 58.4 ppb (55) 48.6 ppb (45) N/A 10.0 ppb (9) N/A N/A 0.0 ppb (0) N/A N/A 11.8 μg/m3 (49) 55.0
 
Feb. 11, 2020, noon 69.8 ppb (67) 58.9 ppb (55) N/A 11.0 ppb (10) N/A N/A 0.0 ppb (0) N/A N/A 12.7 μg/m3 (51) 67.0
 
Feb. 11, 2020, 11 a.m. 62.7 ppb (59) 52.0 ppb (48) N/A 11.0 ppb (10) N/A N/A 0.0 ppb (0) N/A N/A 13.2 μg/m3 (53) 59.0
 
Feb. 11, 2020, 10 a.m. 92.8 ppb (91) 78.8 ppb (76) N/A 14.0 ppb (13) N/A N/A 0.0 ppb (0) N/A N/A 16.8 μg/m3 (60) 91.0
 
Feb. 11, 2020, 9 a.m. 47.8 ppb (44) 36.6 ppb (34) N/A 11.0 ppb (10) N/A N/A 0.0 ppb (0) N/A N/A 15.1 μg/m3 (57) 57.0
 
Feb. 11, 2020, 8 a.m. 51.3 ppb (48) 38.8 ppb (36) N/A 12.0 ppb (11) N/A N/A 0.0 ppb (0) N/A N/A 15.5 μg/m3 (57) 57.0
 
Feb. 11, 2020, 7 a.m. 68.4 ppb (65) 53.2 ppb (49) N/A 15.0 ppb (14) N/A N/A 0.0 ppb (0) N/A N/A 15.7 μg/m3 (58) 65.0
 
Feb. 11, 2020, 6 a.m. 45.0 ppb (42) 29.5 ppb (27) N/A 16.0 ppb (15) N/A N/A 0.0 ppb (0) N/A N/A 16.5 μg/m3 (60) 60.0
 
Feb. 11, 2020, 5 a.m. 44.5 ppb (41) 28.2 ppb (26) N/A 16.0 ppb (15) N/A N/A 0.0 ppb (0) N/A N/A 11.7 μg/m3 (49) 49.0
 
Feb. 11, 2020, 4 a.m. 45.8 ppb (42) 28.5 ppb (26) N/A 17.0 ppb (16) N/A N/A 0.0 ppb (0) N/A N/A 9.3 μg/m3 (39) 42.0
 
Feb. 11, 2020, 3 a.m. 39.1 ppb (36) 19.8 ppb (18) N/A 19.0 ppb (18) N/A N/A 0.0 ppb (0) N/A N/A 9.2 μg/m3 (38) 38.0
 
Feb. 11, 2020, 2 a.m. 31.4 ppb (29) 11.1 ppb (10) N/A 20.0 ppb (19) N/A N/A 1.0 ppb (1) N/A N/A 6.3 μg/m3 (26) 29.0
 
Feb. 11, 2020, 1 a.m. 18.2 ppb (17) 2.4 ppb (2) N/A 16.0 ppb (15) N/A N/A 9.0 ppb (7) N/A N/A 5.2 μg/m3 (22) 22.0
 
Feb. 10, 2020, 11 p.m. 20.3 ppb (19) 11.0 ppb (10) N/A 9.0 ppb (8) N/A N/A 22.0 ppb (17) N/A N/A 5.0 μg/m3 (21) 21.0
 
Feb. 10, 2020, 10 p.m. 39.4 ppb (36) 24.8 ppb (23) N/A 15.0 ppb (14) N/A N/A 17.0 ppb (13) N/A N/A 7.0 μg/m3 (29) 36.0
 
Feb. 10, 2020, 9 p.m. 40.2 ppb (37) 26.8 ppb (25) N/A 13.0 ppb (12) N/A N/A 14.0 ppb (11) N/A N/A 10.4 μg/m3 (43) 43.0
 
Feb. 10, 2020, 8 p.m. 38.2 ppb (35) 23.8 ppb (22) N/A 14.0 ppb (13) N/A N/A 13.0 ppb (10) N/A N/A 11.1 μg/m3 (46) 46.0
 
Feb. 10, 2020, 7 p.m. 28.1 ppb (26) 17.2 ppb (16) N/A 11.0 ppb (10) N/A N/A 13.0 ppb (10) N/A N/A 11.9 μg/m3 (50) 50.0
 
Feb. 10, 2020, 6 p.m. 72.5 ppb (70) 53.9 ppb (50) N/A 19.0 ppb (18) N/A N/A 3.0 ppb (2) N/A N/A 14.3 μg/m3 (55) 70.0
 
Feb. 10, 2020, 5 p.m. 103.2 ppb (100) 87.7 ppb (86) N/A 16.0 ppb (15) N/A N/A 0.0 ppb (0) N/A N/A 13.9 μg/m3 (54) 100.0
 
Feb. 10, 2020, 4 p.m. 114.9 ppb (103) 98.4 ppb (97) N/A 17.0 ppb (16) N/A N/A 0.0 ppb (0) N/A N/A 16.7 μg/m3 (60) 103.0
 
Feb. 10, 2020, 3 p.m. 88.1 ppb (86) 74.7 ppb (72) N/A 14.0 ppb (13) N/A N/A 0.0 ppb (0) N/A N/A 14.8 μg/m3 (56) 86.0
 
Feb. 10, 2020, 2 p.m. 96.2 ppb (95) 76.8 ppb (74) N/A 20.0 ppb (19) N/A N/A 0.0 ppb (0) N/A N/A 13.6 μg/m3 (53) 95.0
 
Feb. 10, 2020, 1 p.m. 69.0 ppb (66) 55.2 ppb (51) N/A 14.0 ppb (13) N/A N/A 0.0 ppb (0) N/A N/A 13.1 μg/m3 (52) 66.0
 
Feb. 10, 2020, noon 50.9 ppb (47) 37.2 ppb (34) N/A 14.0 ppb (13) N/A N/A 0.0 ppb (0) N/A N/A 13.9 μg/m3 (54) 54.0
 
Feb. 10, 2020, 11 a.m. 47.3 ppb (44) 33.9 ppb (31) N/A 13.0 ppb (12) N/A N/A 0.0 ppb (0) N/A N/A 15.8 μg/m3 (58) 58.0
 
Feb. 10, 2020, 10 a.m. 46.5 ppb (43) 33.7 ppb (31) N/A 13.0 ppb (12) N/A N/A 0.0 ppb (0) N/A N/A 13.7 μg/m3 (54) 54.0
 
Feb. 10, 2020, 9 a.m. 27.8 ppb (26) 15.2 ppb (14) N/A 13.0 ppb (12) N/A N/A 0.0 ppb (0) N/A N/A 13.9 μg/m3 (54) 54.0
 
Feb. 10, 2020, 8 a.m. 41.2 ppb (38) 26.2 ppb (24) N/A 15.0 ppb (14) N/A N/A 0.0 ppb (0) N/A N/A 15.3 μg/m3 (57) 57.0
 
Feb. 10, 2020, 7 a.m. 56.2 ppb (52) 40.8 ppb (38) N/A 15.0 ppb (14) N/A N/A 0.0 ppb (0) N/A N/A 23.1 μg/m3 (74) 74.0
 
Feb. 10, 2020, 6 a.m. 36.7 ppb (34) 22.2 ppb (21) N/A 15.0 ppb (14) N/A N/A 0.0 ppb (0) N/A N/A 21.8 μg/m3 (71) 71.0
 
Feb. 10, 2020, 5 a.m. 35.4 ppb (33) 19.9 ppb (18) N/A 15.0 ppb (14) N/A N/A 0.0 ppb (0) N/A N/A 17.1 μg/m3 (61) 61.0
 
Feb. 10, 2020, 4 a.m. 29.2 ppb (27) 12.5 ppb (12) N/A 17.0 ppb (16) N/A N/A 0.0 ppb (0) N/A N/A 15.8 μg/m3 (58) 58.0
 
Feb. 10, 2020, 3 a.m. 26.1 ppb (24) 8.1 ppb (8) N/A 18.0 ppb (17) N/A N/A 0.0 ppb (0) N/A N/A 10.7 μg/m3 (45) 45.0
 
Feb. 10, 2020, 2 a.m. 24.2 ppb (22) 5.4 ppb (5) N/A 19.0 ppb (18) N/A N/A 2.0 ppb (2) N/A N/A 8.5 μg/m3 (35) 35.0
 
Feb. 10, 2020, 1 a.m. 12.4 ppb (11) 0.9 ppb (1) N/A 12.0 ppb (11) N/A N/A 13.0 ppb (10) N/A N/A 5.9 μg/m3 (25) 25.0
 
Feb. 10, 2020, midnight 7.2 ppb (7) 0.9 ppb (1) N/A 6.0 ppb (6) N/A N/A 22.0 ppb (17) N/A N/A 5.7 μg/m3 (24) 24.0
 
Feb. 9, 2020, 11 p.m. 7.9 ppb (7) 2.4 ppb (2) N/A 5.0 ppb (5) N/A N/A 23.0 ppb (18) N/A N/A 6.5 μg/m3 (27) 27.0
 
Feb. 9, 2020, 10 p.m. 6.8 ppb (6) 2.4 ppb (2) N/A 4.0 ppb (4) N/A N/A 22.0 ppb (17) N/A N/A 7.0 μg/m3 (29) 29.0
 
Feb. 9, 2020, 9 p.m. 12.1 ppb (11) 5.7 ppb (5) N/A 6.0 ppb (6) N/A N/A 18.0 ppb (14) N/A N/A 8.5 μg/m3 (35) 35.0
 
Feb. 9, 2020, 8 p.m. 20.6 ppb (19) 11.2 ppb (10) N/A 9.0 ppb (8) N/A N/A 15.0 ppb (12) N/A N/A 9.9 μg/m3 (41) 41.0
 
Feb. 9, 2020, 7 p.m. 24.3 ppb (23) 12.7 ppb (12) N/A 12.0 ppb (11) N/A N/A 11.0 ppb (8) N/A N/A 11.5 μg/m3 (48) 48.0
 
Feb. 9, 2020, 6 p.m. 25.9 ppb (24) 13.2 ppb (12) N/A 13.0 ppb (12) N/A N/A 9.0 ppb (7) N/A N/A 11.7 μg/m3 (49) 49.0
 
Feb. 9, 2020, 5 p.m. 26.2 ppb (24) 12.8 ppb (12) N/A 13.0 ppb (12) N/A N/A 5.0 ppb (4) N/A N/A 10.2 μg/m3 (42) 42.0
 
Feb. 9, 2020, 4 p.m. 33.2 ppb (31) 19.4 ppb (18) N/A 14.0 ppb (13) N/A N/A 2.0 ppb (2) N/A N/A 9.0 μg/m3 (38) 38.0
 
Feb. 9, 2020, 3 p.m. 19.9 ppb (18) 6.9 ppb (6) N/A 13.0 ppb (12) N/A N/A 3.0 ppb (2) N/A N/A 7.6 μg/m3 (32) 32.0
 
Feb. 9, 2020, 2 p.m. 29.7 ppb (28) 16.3 ppb (15) N/A 13.0 ppb (12) N/A N/A 0.0 ppb (0) N/A N/A 7.7 μg/m3 (32) 32.0
 
Feb. 9, 2020, 1 p.m. 20.4 ppb (19) 9.3 ppb (9) N/A 11.0 ppb (10) N/A N/A 3.0 ppb (2) N/A N/A 8.1 μg/m3 (34) 34.0
 
Feb. 9, 2020, noon 19.5 ppb (18) 7.1 ppb (7) N/A 12.0 ppb (11) N/A N/A 2.0 ppb (2) N/A N/A 8.6 μg/m3 (36) 36.0
 
Feb. 9, 2020, 11 a.m. 18.7 ppb (17) 6.7 ppb (6) N/A 12.0 ppb (11) N/A N/A 1.0 ppb (1) N/A N/A 8.9 μg/m3 (37) 37.0
 
Feb. 9, 2020, 10 a.m. 20.7 ppb (19) 8.1 ppb (8) N/A 13.0 ppb (12) N/A N/A 6.0 ppb (5) N/A N/A 8.7 μg/m3 (36) 36.0
 
Feb. 9, 2020, 9 a.m. 15.4 ppb (14) 3.1 ppb (3) N/A 12.0 ppb (11) N/A N/A 7.0 ppb (5) N/A N/A 10.6 μg/m3 (44) 44.0
 
Feb. 9, 2020, 8 a.m. 23.8 ppb (22) 8.9 ppb (8) N/A 15.0 ppb (14) N/A N/A 3.0 ppb (2) N/A N/A 12.3 μg/m3 (51) 51.0
 
Feb. 9, 2020, 7 a.m. 26.6 ppb (25) 10.9 ppb (10) N/A 16.0 ppb (15) N/A N/A 2.0 ppb (2) N/A N/A 10.3 μg/m3 (43) 43.0
 
Feb. 9, 2020, 6 a.m. 20.9 ppb (19) 4.9 ppb (5) N/A 16.0 ppb (15) N/A N/A 2.0 ppb (2) N/A N/A 12.5 μg/m3 (51) 51.0
 
Feb. 9, 2020, 5 a.m. 32.3 ppb (30) 10.3 ppb (10) N/A 22.0 ppb (20) N/A N/A 4.0 ppb (3) N/A N/A 11.7 μg/m3 (49) 49.0
 
Feb. 9, 2020, 4 a.m. 36.9 ppb (34) 15.0 ppb (14) N/A 22.0 ppb (20) N/A N/A 5.0 ppb (4) N/A N/A 9.5 μg/m3 (40) 40.0
 
Feb. 9, 2020, 3 a.m. 19.7 ppb (18) 4.1 ppb (4) N/A 16.0 ppb (15) N/A N/A 12.0 ppb (9) N/A N/A 8.8 μg/m3 (37) 37.0
 
Feb. 9, 2020, 2 a.m. 19.9 ppb (18) 5.1 ppb (5) N/A 15.0 ppb (14) N/A N/A 17.0 ppb (13) N/A N/A 5.9 μg/m3 (25) 25.0
 
Feb. 9, 2020, 1 a.m. 25.4 ppb (24) 8.4 ppb (8) N/A 17.0 ppb (16) N/A N/A 19.0 ppb (15) N/A N/A 5.3 μg/m3 (22) 24.0
 
Feb. 9, 2020, midnight 30.1 ppb (28) 14.7 ppb (14) N/A 15.0 ppb (14) N/A N/A 21.0 ppb (16) N/A N/A 4.4 μg/m3 (18) 28.0
 
Feb. 8, 2020, 11 p.m. 24.4 ppb (23) 11.4 ppb (11) N/A 13.0 ppb (12) N/A N/A 23.0 ppb (18) N/A N/A 3.9 μg/m3 (16) 23.0
 
Feb. 8, 2020, 10 p.m. 15.1 ppb (14) 7.0 ppb (6) N/A 8.0 ppb (7) N/A N/A 28.0 ppb (22) N/A N/A 3.9 μg/m3 (16) 22.0
 
Feb. 8, 2020, 9 p.m. 21.2 ppb (20) 11.1 ppb (10) N/A 10.0 ppb (9) N/A N/A 27.0 ppb (21) N/A N/A 3.4 μg/m3 (14) 21.0
 
Feb. 8, 2020, 8 p.m. 21.2 ppb (20) 10.4 ppb (10) N/A 11.0 ppb (10) N/A N/A 27.0 ppb (21) N/A N/A 3.9 μg/m3 (16) 21.0
 
Feb. 8, 2020, 7 p.m. 16.9 ppb (16) 8.2 ppb (8) N/A 9.0 ppb (8) N/A N/A 29.0 ppb (22) N/A N/A 3.2 μg/m3 (13) 22.0
 
Feb. 8, 2020, 6 p.m. 16.9 ppb (16) 9.0 ppb (8) N/A 8.0 ppb (7) N/A N/A 27.0 ppb (21) N/A N/A 3.2 μg/m3 (13) 21.0
 
Feb. 8, 2020, 5 p.m. 21.5 ppb (20) 10.6 ppb (10) N/A 11.0 ppb (10) N/A N/A 23.0 ppb (18) N/A N/A 3.8 μg/m3 (16) 20.0
 
Feb. 8, 2020, 4 p.m. 25.3 ppb (23) 11.2 ppb (10) N/A 14.0 ppb (13) N/A N/A 20.0 ppb (15) N/A N/A 3.8 μg/m3 (16) 23.0
 
Feb. 8, 2020, 3 p.m. 20.9 ppb (19) 7.8 ppb (7) N/A 13.0 ppb (12) N/A N/A 20.0 ppb (15) N/A N/A 3.5 μg/m3 (15) 19.0
 
Feb. 8, 2020, 2 p.m. 23.4 ppb (22) 9.1 ppb (8) N/A 14.0 ppb (13) N/A N/A 19.0 ppb (15) N/A N/A 3.6 μg/m3 (15) 22.0
 
Feb. 8, 2020, 1 p.m. 16.6 ppb (15) 6.0 ppb (6) N/A 11.0 ppb (10) N/A N/A 24.0 ppb (18) N/A N/A 4.4 μg/m3 (18) 18.0
 
Feb. 8, 2020, noon 8.0 ppb (7) 2.2 ppb (2) N/A 6.0 ppb (6) N/A N/A 30.0 ppb (23) N/A N/A 3.9 μg/m3 (16) 23.0
 
Feb. 8, 2020, 11 a.m. 8.7 ppb (8) 3.1 ppb (3) N/A 6.0 ppb (6) N/A N/A 33.0 ppb (25) N/A N/A 3.3 μg/m3 (14) 25.0
 
Feb. 8, 2020, 10 a.m. 9.3 ppb (9) 2.7 ppb (3) N/A 7.0 ppb (6) N/A N/A 32.0 ppb (25) N/A N/A 3.0 μg/m3 (12) 25.0
 
Feb. 8, 2020, 9 a.m. 8.6 ppb (8) 1.6 ppb (1) N/A 7.0 ppb (6) N/A N/A 28.0 ppb (22) N/A N/A 3.8 μg/m3 (16) 22.0
 
Feb. 8, 2020, 8 a.m. 10.0 ppb (9) 3.1 ppb (3) N/A 7.0 ppb (6) N/A N/A 32.0 ppb (25) N/A N/A 4.0 μg/m3 (17) 25.0
 
Feb. 8, 2020, 7 a.m. 7.8 ppb (7) 3.1 ppb (3) N/A 5.0 ppb (5) N/A N/A 36.0 ppb (28) N/A N/A 4.1 μg/m3 (17) 28.0
 
Feb. 8, 2020, 6 a.m. 15.6 ppb (14) 4.7 ppb (4) N/A 11.0 ppb (10) N/A N/A 29.0 ppb (22) N/A N/A 3.7 μg/m3 (15) 22.0
 
Feb. 8, 2020, 5 a.m. 19.6 ppb (18) 7.1 ppb (7) N/A 12.0 ppb (11) N/A N/A 27.0 ppb (21) N/A N/A 3.0 μg/m3 (12) 21.0
 
Feb. 8, 2020, 4 a.m. 17.2 ppb (16) 6.8 ppb (6) N/A 10.0 ppb (9) N/A N/A 28.0 ppb (22) N/A N/A 3.0 μg/m3 (12) 22.0
 
Feb. 8, 2020, 3 a.m. 12.2 ppb (11) 4.1 ppb (4) N/A 8.0 ppb (7) N/A N/A 30.0 ppb (23) N/A N/A 2.6 μg/m3 (11) 23.0
 
Feb. 8, 2020, 2 a.m. 15.5 ppb (14) 5.6 ppb (5) N/A 10.0 ppb (9) N/A N/A 30.0 ppb (23) N/A N/A 2.4 μg/m3 (10) 23.0
 
Feb. 8, 2020, 1 a.m. 19.7 ppb (18) 8.3 ppb (8) N/A 11.0 ppb (10) N/A N/A 29.0 ppb (22) N/A N/A 2.6 μg/m3 (11) 22.0
 
Feb. 8, 2020, midnight 20.5 ppb (19) 9.6 ppb (9) N/A 11.0 ppb (10) N/A N/A 29.0 ppb (22) N/A N/A 2.4 μg/m3 (10) 22.0
 
Feb. 7, 2020, 11 p.m. 29.2 ppb (27) 14.3 ppb (13) N/A 15.0 ppb (14) N/A N/A 25.0 ppb (19) N/A N/A 2.8 μg/m3 (12) 27.0
 
Feb. 7, 2020, 10 p.m. 36.1 ppb (33) 17.4 ppb (16) N/A 19.0 ppb (18) N/A N/A 22.0 ppb (17) N/A N/A 2.9 μg/m3 (12) 33.0
 
Feb. 7, 2020, 9 p.m. 27.3 ppb (25) 12.1 ppb (11) N/A 15.0 ppb (14) N/A N/A 25.0 ppb (19) N/A N/A 3.0 μg/m3 (12) 25.0
 
Feb. 7, 2020, 8 p.m. 19.0 ppb (18) 8.1 ppb (8) N/A 11.0 ppb (10) N/A N/A 25.0 ppb (19) N/A N/A N/A 19.0
 
Feb. 7, 2020, 7 p.m. 29.6 ppb (27) 14.8 ppb (14) N/A 15.0 ppb (14) N/A N/A 20.0 ppb (15) N/A N/A 3.2 μg/m3 (13) 27.0
 
Feb. 7, 2020, 6 p.m. 21.7 ppb (20) 10.5 ppb (10) N/A 11.0 ppb (10) N/A N/A 21.0 ppb (16) N/A N/A 3.0 μg/m3 (12) 20.0
 
Feb. 7, 2020, 5 p.m. 42.5 ppb (39) 22.9 ppb (21) N/A 20.0 ppb (19) N/A N/A 15.0 ppb (12) N/A N/A 3.4 μg/m3 (14) 39.0
 
Feb. 7, 2020, 4 p.m. 30.7 ppb (28) 13.1 ppb (12) N/A 18.0 ppb (17) N/A N/A 16.0 ppb (12) N/A N/A 3.2 μg/m3 (13) 28.0
 
Feb. 7, 2020, 3 p.m. 44.0 ppb (41) 21.7 ppb (20) N/A 22.0 ppb (20) N/A N/A 13.0 ppb (10) N/A N/A 3.3 μg/m3 (14) 41.0
 
Feb. 7, 2020, 2 p.m. 35.4 ppb (33) 16.3 ppb (15) N/A 19.0 ppb (18) N/A N/A 15.0 ppb (12) N/A N/A 3.0 μg/m3 (12) 33.0
 
Feb. 7, 2020, 1 p.m. 30.0 ppb (28) 13.6 ppb (13) N/A 16.0 ppb (15) N/A N/A 17.0 ppb (13) N/A N/A 2.6 μg/m3 (11) 28.0
 
Feb. 7, 2020, noon 13.7 ppb (13) 4.5 ppb (4) N/A 9.0 ppb (8) N/A N/A 25.0 ppb (19) N/A N/A 2.4 μg/m3 (10) 19.0
 
Feb. 7, 2020, 11 a.m. 9.0 ppb (8) 2.8 ppb (3) N/A 6.0 ppb (6) N/A N/A 27.0 ppb (21) N/A N/A 2.1 μg/m3 (9) 21.0
 
Feb. 7, 2020, 10 a.m. 9.3 ppb (9) 3.6 ppb (3) N/A 6.0 ppb (6) N/A N/A 28.0 ppb (22) N/A N/A 2.2 μg/m3 (9) 22.0
 
Feb. 7, 2020, 9 a.m. 8.0 ppb (7) 2.8 ppb (3) N/A 5.0 ppb (5) N/A N/A 30.0 ppb (23) N/A N/A 2.3 μg/m3 (10) 23.0
 
Feb. 7, 2020, 8 a.m. 9.0 ppb (8) 3.0 ppb (3) N/A 6.0 ppb (6) N/A N/A 30.0 ppb (23) N/A N/A 2.3 μg/m3 (10) 23.0
 
Feb. 7, 2020, 7 a.m. 7.7 ppb (7) 2.5 ppb (2) N/A 5.0 ppb (5) N/A N/A 29.0 ppb (22) N/A N/A 2.5 μg/m3 (10) 22.0
 
Feb. 7, 2020, 6 a.m. 12.8 ppb (12) 5.3 ppb (5) N/A 8.0 ppb (7) N/A N/A 27.0 ppb (21) N/A N/A 3.2 μg/m3 (13) 21.0
 
Feb. 7, 2020, 5 a.m. 16.3 ppb (15) 6.5 ppb (6) N/A 10.0 ppb (9) N/A N/A 29.0 ppb (22) N/A N/A 3.1 μg/m3 (13) 22.0
 
Feb. 7, 2020, 4 a.m. 12.5 ppb (12) 5.7 ppb (5) N/A 7.0 ppb (6) N/A N/A 32.0 ppb (25) N/A N/A 2.7 μg/m3 (11) 25.0
 
Feb. 7, 2020, 3 a.m. 16.5 ppb (15) 7.8 ppb (7) N/A 9.0 ppb (8) N/A N/A 29.0 ppb (22) N/A N/A 2.9 μg/m3 (12) 22.0
 
Feb. 7, 2020, 2 a.m. 22.4 ppb (21) 10.3 ppb (10) N/A 12.0 ppb (11) N/A N/A 24.0 ppb (18) N/A N/A 3.0 μg/m3 (12) 21.0
 
Feb. 7, 2020, 1 a.m. 21.6 ppb (20) 10.8 ppb (10) N/A 11.0 ppb (10) N/A N/A 26.0 ppb (20) N/A N/A 2.7 μg/m3 (11) 20.0
 
Feb. 7, 2020, midnight 29.6 ppb (27) 15.2 ppb (14) N/A 14.0 ppb (13) N/A N/A 22.0 ppb (17) N/A N/A 3.0 μg/m3 (12) 27.0
 
Feb. 6, 2020, 11 p.m. 31.6 ppb (29) 17.5 ppb (16) N/A 14.0 ppb (13) N/A N/A 23.0 ppb (18) N/A N/A 2.8 μg/m3 (12) 29.0
 
Feb. 6, 2020, 10 p.m. 36.6 ppb (34) 19.7 ppb (18) N/A 17.0 ppb (16) N/A N/A 20.0 ppb (15) N/A N/A 2.8 μg/m3 (12) 34.0
 
Feb. 6, 2020, 9 p.m. 35.5 ppb (33) 20.3 ppb (19) N/A 15.0 ppb (14) N/A N/A 21.0 ppb (16) N/A N/A 2.6 μg/m3 (11) 33.0
 
Feb. 6, 2020, 8 p.m. 34.4 ppb (32) 19.3 ppb (18) N/A 15.0 ppb (14) N/A N/A 20.0 ppb (15) N/A N/A 2.7 μg/m3 (11) 32.0
 
Feb. 6, 2020, 7 p.m. 34.3 ppb (32) 20.8 ppb (19) N/A 13.0 ppb (12) N/A N/A 17.0 ppb (13) N/A N/A 2.8 μg/m3 (12) 32.0
 
Feb. 6, 2020, 6 p.m. 46.9 ppb (43) 29.0 ppb (27) N/A 18.0 ppb (17) N/A N/A 14.0 ppb (11) N/A N/A 3.1 μg/m3 (13) 43.0
 
Feb. 6, 2020, 5 p.m. 48.2 ppb (45) 28.5 ppb (26) N/A 20.0 ppb (19) N/A N/A 12.0 ppb (9) N/A N/A 3.2 μg/m3 (13) 45.0
 
Feb. 6, 2020, 4 p.m. 44.7 ppb (41) 25.4 ppb (24) N/A 19.0 ppb (18) N/A N/A 11.0 ppb (8) N/A N/A 3.3 μg/m3 (14) 41.0
 
Feb. 6, 2020, 3 p.m. 37.9 ppb (35) 18.8 ppb (17) N/A 19.0 ppb (18) N/A N/A 11.0 ppb (8) N/A N/A 3.3 μg/m3 (14) 35.0
 
Feb. 6, 2020, 2 p.m. 40.1 ppb (37) 19.8 ppb (18) N/A 20.0 ppb (19) N/A N/A 10.0 ppb (8) N/A N/A 3.2 μg/m3 (13) 37.0
 
Feb. 6, 2020, 1 p.m. 27.0 ppb (25) 10.8 ppb (10) N/A 16.0 ppb (15) N/A N/A 14.0 ppb (11) N/A N/A 2.9 μg/m3 (12) 25.0
 
Feb. 6, 2020, noon 14.6 ppb (14) 4.8 ppb (4) N/A 10.0 ppb (9) N/A N/A 19.0 ppb (15) 4.4 ppb (49) N/A 2.4 μg/m3 (10) 49.0
 
Feb. 6, 2020, 11 a.m. 9.3 ppb (9) 1.2 ppb (1) N/A 8.0 ppb (7) N/A N/A 22.0 ppb (17) N/A N/A 2.0 μg/m3 (8) 17.0
 
Feb. 6, 2020, 10 a.m. 9.0 ppb (8) 1.2 ppb (1) N/A 8.0 ppb (7) N/A N/A 21.0 ppb (16) N/A N/A 2.2 μg/m3 (9) 16.0
 
Feb. 6, 2020, 9 a.m. 4.0 ppb (4) 0.0 ppb (0) N/A 4.0 ppb (4) N/A N/A 24.0 ppb (18) N/A N/A 2.5 μg/m3 (10) 18.0
 
Feb. 6, 2020, 8 a.m. 3.1 ppb (3) 0.0 ppb (0) N/A 3.0 ppb (3) N/A N/A 27.0 ppb (21) N/A N/A 2.2 μg/m3 (9) 21.0
 
Feb. 6, 2020, 7 a.m. 3.2 ppb (3) 0.0 ppb (0) N/A 3.0 ppb (3) N/A N/A 27.0 ppb (21) N/A N/A 2.3 μg/m3 (10) 21.0
 
Feb. 6, 2020, 6 a.m. 3.9 ppb (4) 0.0 ppb (0) N/A 4.0 ppb (4) N/A N/A 23.0 ppb (18) 7.1 ppb (76) N/A 3.0 μg/m3 (12) 76.0
 
Feb. 6, 2020, 5 a.m. 14.0 ppb (13) 3.5 ppb (3) N/A 10.0 ppb (9) N/A N/A 17.0 ppb (13) N/A N/A 3.8 μg/m3 (16) 16.0