ID: 2379

AQSQID: 530330030

Site Name: Seattle-10th & Weller

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

Updated: Sept. 26, 2020, 12:41 a.m.

Location: Seattle (Little Saigon), WA

Reporting: True, Located: True

Current AQI: 32.0

Seattle (Little Saigon) WA, US: 47.597222, -122.319722

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
Sept. 25, 2020, 11 p.m. 34.6 ppb (32) 18.8 ppb (17) N/A 16.0 ppb (15) N/A N/A N/A 0.46 ppb (5) N/A 4.0 μg/m3 (17) 32.0
 
Sept. 25, 2020, 10 p.m. 47.9 ppb (44) 28.5 ppb (26) N/A 19.0 ppb (18) N/A N/A N/A 0.5 ppb (6) N/A 4.0 μg/m3 (17) 44.0
 
Sept. 25, 2020, 9 p.m. 37.5 ppb (35) 22.7 ppb (21) N/A 15.0 ppb (14) N/A N/A N/A 0.44 ppb (5) N/A 4.0 μg/m3 (17) 35.0
 
Sept. 25, 2020, 8 p.m. 35.5 ppb (33) 19.5 ppb (18) N/A 16.0 ppb (15) N/A N/A N/A 0.38 ppb (4) N/A 6.0 μg/m3 (25) 33.0
 
Sept. 25, 2020, 7 p.m. 41.9 ppb (39) 23.8 ppb (22) N/A 18.0 ppb (17) N/A N/A N/A 0.34 ppb (4) N/A 3.0 μg/m3 (12) 39.0
 
Sept. 25, 2020, 6 p.m. 35.1 ppb (32) 17.6 ppb (16) N/A 18.0 ppb (17) N/A N/A N/A 0.31 ppb (3) N/A 3.0 μg/m3 (12) 32.0
 
Sept. 25, 2020, 5 p.m. 20.1 ppb (19) 7.8 ppb (7) N/A 12.0 ppb (11) N/A N/A N/A 0.23 ppb (3) N/A 3.0 μg/m3 (12) 19.0
 
Sept. 25, 2020, 4 p.m. 32.1 ppb (30) 12.1 ppb (11) N/A 20.0 ppb (19) N/A N/A N/A 0.22 ppb (2) N/A 5.0 μg/m3 (21) 30.0
 
Sept. 25, 2020, 3 p.m. 25.8 ppb (24) 11.9 ppb (11) N/A 14.0 ppb (13) N/A N/A N/A 0.22 ppb (2) N/A 7.0 μg/m3 (29) 29.0
 
Sept. 25, 2020, 2 p.m. 24.6 ppb (23) 8.9 ppb (8) N/A 16.0 ppb (15) N/A N/A N/A 0.22 ppb (2) N/A 5.0 μg/m3 (21) 23.0
 
Sept. 25, 2020, 1 p.m. 16.2 ppb (15) 5.1 ppb (5) N/A 11.0 ppb (10) N/A N/A N/A 0.22 ppb (2) N/A 4.0 μg/m3 (17) 17.0
 
Sept. 25, 2020, noon 15.9 ppb (15) 5.8 ppb (5) N/A 10.0 ppb (9) N/A N/A N/A 0.27 ppb (3) N/A 5.0 μg/m3 (21) 21.0
 
Sept. 25, 2020, 11 a.m. 5.6 ppb (5) 0.4 ppb (0) N/A 5.0 ppb (5) N/A N/A N/A 0.14 ppb (2) N/A 6.0 μg/m3 (25) 25.0
 
Sept. 25, 2020, 10 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 4.0 μg/m3 (17) 17.0
 
Sept. 25, 2020, 9 a.m. 6.6 ppb (6) 0.9 ppb (1) N/A 6.0 ppb (6) N/A N/A N/A 0.12 ppb (1) N/A 6.0 μg/m3 (25) 25.0
 
Sept. 25, 2020, 8 a.m. 6.5 ppb (6) 0.9 ppb (1) N/A 6.0 ppb (6) N/A N/A N/A 0.12 ppb (1) N/A 6.0 μg/m3 (25) 25.0
 
Sept. 25, 2020, 7 a.m. 9.1 ppb (8) 1.7 ppb (2) N/A 7.0 ppb (6) N/A N/A N/A 0.15 ppb (2) N/A 6.0 μg/m3 (25) 25.0
 
Sept. 25, 2020, 6 a.m. 7.0 ppb (6) 0.7 ppb (1) N/A 6.0 ppb (6) N/A N/A N/A 0.13 ppb (1) N/A 4.0 μg/m3 (17) 17.0
 
Sept. 25, 2020, 5 a.m. 13.4 ppb (12) 3.4 ppb (3) N/A 10.0 ppb (9) N/A N/A N/A 0.23 ppb (3) N/A 2.0 μg/m3 (8) 12.0
 
Sept. 25, 2020, 4 a.m. 7.8 ppb (7) 1.3 ppb (1) N/A 6.0 ppb (6) N/A N/A N/A 0.16 ppb (2) N/A 1.0 μg/m3 (4) 7.0
 
Sept. 25, 2020, 3 a.m. 10.2 ppb (9) 2.6 ppb (2) N/A 8.0 ppb (7) N/A N/A N/A 0.22 ppb (2) N/A 3.0 μg/m3 (12) 12.0
 
Sept. 25, 2020, 2 a.m. 14.5 ppb (13) 3.2 ppb (3) N/A 11.0 ppb (10) N/A N/A N/A 0.24 ppb (3) N/A 6.0 μg/m3 (25) 25.0
 
Sept. 25, 2020, 1 a.m. 32.7 ppb (30) 13.8 ppb (13) N/A 19.0 ppb (18) N/A N/A N/A 0.48 ppb (5) N/A 8.0 μg/m3 (33) 33.0
 
Sept. 25, 2020, midnight 31.5 ppb (29) 16.6 ppb (15) N/A 15.0 ppb (14) N/A N/A N/A 0.42 ppb (5) N/A 6.0 μg/m3 (25) 29.0
 
Sept. 24, 2020, 11 p.m. 37.9 ppb (35) 21.0 ppb (19) N/A 17.0 ppb (16) N/A N/A N/A 0.44 ppb (5) N/A 6.0 μg/m3 (25) 35.0
 
Sept. 24, 2020, 10 p.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 4.0 μg/m3 (17) 17.0
 
Sept. 24, 2020, 9 p.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 6.0 μg/m3 (25) 25.0
 
Sept. 24, 2020, 8 p.m. 65.2 ppb (62) 35.8 ppb (33) N/A 29.0 ppb (27) N/A N/A N/A 0.31 ppb (3) N/A 10.0 μg/m3 (42) 62.0
 
Sept. 24, 2020, 7 p.m. 87.4 ppb (86) 56.8 ppb (53) N/A 31.0 ppb (29) N/A N/A N/A 0.41 ppb (5) N/A 8.0 μg/m3 (33) 86.0
 
Sept. 24, 2020, 6 p.m. 54.8 ppb (51) 31.8 ppb (29) N/A 23.0 ppb (21) N/A N/A N/A 0.31 ppb (3) N/A 9.0 μg/m3 (38) 51.0
 
Sept. 24, 2020, 5 p.m. 52.3 ppb (48) 31.3 ppb (29) N/A 21.0 ppb (19) N/A N/A N/A 0.27 ppb (3) N/A 11.0 μg/m3 (46) 48.0
 
Sept. 24, 2020, 4 p.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 9.0 μg/m3 (38) 38.0
 
Sept. 24, 2020, 3 p.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 9.0 μg/m3 (38) 38.0
 
Sept. 24, 2020, 2 p.m. 54.8 ppb (51) 24.6 ppb (23) N/A 30.0 ppb (28) N/A N/A N/A N/A N/A 8.0 μg/m3 (33) 51.0
 
Sept. 24, 2020, 1 p.m. 37.1 ppb (34) 18.3 ppb (17) N/A 19.0 ppb (18) N/A N/A N/A N/A N/A 8.0 μg/m3 (33) 34.0
 
Sept. 24, 2020, noon 25.4 ppb (24) 12.0 ppb (11) N/A 13.0 ppb (12) N/A N/A N/A N/A N/A 4.0 μg/m3 (17) 24.0
 
Sept. 24, 2020, 11 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 5.0 μg/m3 (21) 21.0
 
Sept. 24, 2020, 10 a.m. 9.8 ppb (9) 2.8 ppb (3) N/A 7.0 ppb (6) N/A N/A N/A N/A N/A 6.0 μg/m3 (25) 25.0
 
Sept. 24, 2020, 9 a.m. 8.4 ppb (8) 2.1 ppb (2) N/A 6.0 ppb (6) N/A N/A N/A N/A N/A 4.0 μg/m3 (17) 17.0
 
Sept. 24, 2020, 8 a.m. 9.4 ppb (9) 1.7 ppb (2) N/A 8.0 ppb (7) N/A N/A N/A N/A N/A 6.0 μg/m3 (25) 25.0
 
Sept. 24, 2020, 7 a.m. 9.1 ppb (8) 1.8 ppb (2) N/A 7.0 ppb (6) N/A N/A N/A N/A N/A 5.0 μg/m3 (21) 21.0
 
Sept. 24, 2020, 6 a.m. 10.5 ppb (10) 2.2 ppb (2) N/A 8.0 ppb (7) N/A N/A N/A N/A N/A 3.0 μg/m3 (12) 12.0
 
Sept. 24, 2020, 5 a.m. 13.3 ppb (12) 3.7 ppb (3) N/A 10.0 ppb (9) N/A N/A N/A N/A N/A 1.0 μg/m3 (4) 12.0
 
Sept. 24, 2020, 4 a.m. 13.9 ppb (13) 4.5 ppb (4) N/A 9.0 ppb (8) N/A N/A N/A N/A N/A 0.0 μg/m3 (0) 13.0
 
Sept. 24, 2020, 3 a.m. 16.3 ppb (15) 6.4 ppb (6) N/A 10.0 ppb (9) N/A N/A N/A N/A N/A 0.0 μg/m3 (0) 15.0
 
Sept. 24, 2020, 2 a.m. 24.1 ppb (22) 8.3 ppb (8) N/A 16.0 ppb (15) N/A N/A N/A N/A N/A 0.0 μg/m3 (0) 22.0
 
Sept. 24, 2020, 1 a.m. 13.3 ppb (12) 5.2 ppb (5) N/A 8.0 ppb (7) N/A N/A N/A N/A N/A 2.0 μg/m3 (8) 12.0
 
Sept. 24, 2020, midnight 14.4 ppb (13) 4.6 ppb (4) N/A 10.0 ppb (9) N/A N/A N/A N/A N/A 2.0 μg/m3 (8) 13.0
 
Sept. 23, 2020, 11 p.m. 22.6 ppb (21) 9.2 ppb (9) N/A 13.0 ppb (12) N/A N/A N/A N/A N/A 2.0 μg/m3 (8) 21.0
 
Sept. 23, 2020, 10 p.m. 25.3 ppb (23) 10.9 ppb (10) N/A 14.0 ppb (13) N/A N/A N/A N/A N/A 4.0 μg/m3 (17) 23.0
 
Sept. 23, 2020, 9 p.m. 22.4 ppb (21) 9.5 ppb (9) N/A 13.0 ppb (12) N/A N/A N/A N/A N/A 5.0 μg/m3 (21) 21.0
 
Sept. 23, 2020, 8 p.m. 20.2 ppb (19) 8.8 ppb (8) N/A 11.0 ppb (10) N/A N/A N/A N/A N/A 4.0 μg/m3 (17) 19.0
 
Sept. 23, 2020, 7 p.m. 18.0 ppb (17) 6.8 ppb (6) N/A 11.0 ppb (10) N/A N/A N/A N/A N/A 4.0 μg/m3 (17) 17.0
 
Sept. 23, 2020, 6 p.m. 27.9 ppb (26) 11.9 ppb (11) N/A 16.0 ppb (15) N/A N/A N/A N/A N/A 5.0 μg/m3 (21) 26.0
 
Sept. 23, 2020, 5 p.m. 44.8 ppb (41) 25.5 ppb (24) N/A 19.0 ppb (18) N/A N/A N/A N/A N/A 6.0 μg/m3 (25) 41.0
 
Sept. 23, 2020, 4 p.m. 29.1 ppb (27) 15.2 ppb (14) N/A 14.0 ppb (13) N/A N/A N/A N/A N/A 3.0 μg/m3 (12) 27.0
 
Sept. 23, 2020, 3 p.m. 24.2 ppb (22) 10.1 ppb (9) N/A 14.0 ppb (13) N/A N/A N/A N/A N/A 5.0 μg/m3 (21) 22.0
 
Sept. 23, 2020, 2 p.m. 31.6 ppb (29) 17.3 ppb (16) N/A 14.0 ppb (13) N/A N/A N/A N/A N/A 28.0 μg/m3 (84) 84.0
 
Sept. 23, 2020, 1 p.m. 19.0 ppb (18) 7.3 ppb (7) N/A 12.0 ppb (11) N/A N/A N/A N/A N/A 5.0 μg/m3 (21) 21.0
 
Sept. 23, 2020, noon 13.9 ppb (13) 2.4 ppb (2) N/A 11.0 ppb (10) N/A N/A N/A N/A N/A 6.0 μg/m3 (25) 25.0
 
Sept. 23, 2020, 11 a.m. 32.0 ppb (30) 14.4 ppb (13) N/A 18.0 ppb (17) N/A N/A N/A N/A N/A 3.0 μg/m3 (12) 30.0
 
Sept. 23, 2020, 10 a.m. 15.7 ppb (15) 5.6 ppb (5) N/A 10.0 ppb (9) N/A N/A N/A N/A N/A 5.0 μg/m3 (21) 21.0
 
Sept. 23, 2020, 9 a.m. 13.8 ppb (13) 1.6 ppb (1) N/A 12.0 ppb (11) N/A N/A N/A N/A N/A 6.0 μg/m3 (25) 25.0
 
Sept. 23, 2020, 8 a.m. 12.7 ppb (12) 2.1 ppb (2) N/A 11.0 ppb (10) N/A N/A N/A N/A N/A 8.0 μg/m3 (33) 33.0
 
Sept. 23, 2020, 7 a.m. 20.9 ppb (19) 2.5 ppb (2) N/A 18.0 ppb (17) N/A N/A N/A N/A N/A 7.0 μg/m3 (29) 29.0
 
Sept. 23, 2020, 6 a.m. 27.6 ppb (26) 6.4 ppb (6) N/A 21.0 ppb (19) N/A N/A N/A N/A N/A 8.0 μg/m3 (33) 33.0
 
Sept. 23, 2020, 5 a.m. 64.6 ppb (61) 33.5 ppb (31) N/A 31.0 ppb (29) N/A N/A N/A N/A N/A 15.0 μg/m3 (56) 61.0
 
Sept. 23, 2020, 4 a.m. 34.4 ppb (32) 11.0 ppb (10) N/A 23.0 ppb (21) N/A N/A N/A N/A N/A 8.0 μg/m3 (33) 33.0
 
Sept. 23, 2020, 3 a.m. 34.4 ppb (32) 12.0 ppb (11) N/A 22.0 ppb (20) N/A N/A N/A N/A N/A 5.0 μg/m3 (21) 32.0
 
Sept. 23, 2020, 2 a.m. 39.8 ppb (37) 21.7 ppb (20) N/A 18.0 ppb (17) N/A N/A N/A N/A N/A 4.0 μg/m3 (17) 37.0
 
Sept. 23, 2020, 1 a.m. 56.0 ppb (52) 31.9 ppb (30) N/A 24.0 ppb (22) N/A N/A N/A N/A N/A 6.0 μg/m3 (25) 52.0
 
Sept. 23, 2020, midnight 45.3 ppb (42) 25.7 ppb (24) N/A 20.0 ppb (19) N/A N/A N/A N/A N/A 3.0 μg/m3 (12) 42.0
 
Sept. 22, 2020, 11 p.m. 45.6 ppb (42) 26.6 ppb (25) N/A 19.0 ppb (18) N/A N/A N/A N/A N/A 4.0 μg/m3 (17) 42.0
 
Sept. 22, 2020, 10 p.m. 40.5 ppb (38) 23.7 ppb (22) N/A 17.0 ppb (16) N/A N/A N/A N/A N/A 5.0 μg/m3 (21) 38.0
 
Sept. 22, 2020, 9 p.m. 32.9 ppb (30) 19.6 ppb (18) N/A 13.0 ppb (12) N/A N/A N/A N/A N/A 3.0 μg/m3 (12) 30.0
 
Sept. 22, 2020, 8 p.m. 38.5 ppb (36) 24.2 ppb (22) N/A 14.0 ppb (13) N/A N/A N/A N/A N/A 2.0 μg/m3 (8) 36.0
 
Sept. 22, 2020, 7 p.m. 42.5 ppb (39) 26.8 ppb (25) N/A 16.0 ppb (15) N/A N/A N/A N/A N/A N/A 39.0
 
Sept. 22, 2020, 6 p.m. 53.3 ppb (49) 38.4 ppb (36) N/A 15.0 ppb (14) N/A N/A N/A N/A N/A 7.0 μg/m3 (29) 49.0
 
Sept. 22, 2020, 5 p.m. 81.5 ppb (79) 58.7 ppb (55) N/A 23.0 ppb (21) N/A N/A N/A N/A N/A 7.0 μg/m3 (29) 79.0
 
Sept. 22, 2020, 4 p.m. 77.9 ppb (75) 53.7 ppb (50) N/A 24.0 ppb (22) N/A N/A N/A 0.57 ppb (6) N/A 10.0 μg/m3 (42) 75.0
 
Sept. 22, 2020, 3 p.m. 143.3 ppb (108) 112.9 ppb (102) N/A 30.0 ppb (28) N/A N/A N/A 0.69 ppb (8) N/A 9.0 μg/m3 (38) 108.0
 
Sept. 22, 2020, 2 p.m. 121.7 ppb (104) 89.1 ppb (87) N/A 33.0 ppb (31) N/A N/A N/A 0.63 ppb (7) N/A 12.0 μg/m3 (50) 104.0
 
Sept. 22, 2020, 1 p.m. 115.2 ppb (103) 85.1 ppb (83) N/A 30.0 ppb (28) N/A N/A N/A 0.76 ppb (8) N/A 7.0 μg/m3 (29) 103.0
 
Sept. 22, 2020, noon 96.2 ppb (95) 69.7 ppb (67) N/A 26.0 ppb (24) N/A N/A N/A 0.83 ppb (9) N/A 5.0 μg/m3 (21) 95.0
 
Sept. 22, 2020, 11 a.m. 41.8 ppb (39) 24.5 ppb (23) N/A 17.0 ppb (16) N/A N/A N/A 0.46 ppb (5) N/A 4.0 μg/m3 (17) 39.0
 
Sept. 22, 2020, 10 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 6.0 μg/m3 (25) 25.0
 
Sept. 22, 2020, 9 a.m. 48.0 ppb (44) 23.3 ppb (22) N/A 25.0 ppb (23) N/A N/A N/A 0.37 ppb (4) N/A 6.0 μg/m3 (25) 44.0
 
Sept. 22, 2020, 8 a.m. 23.7 ppb (22) 11.1 ppb (10) N/A 13.0 ppb (12) N/A N/A N/A 0.34 ppb (4) N/A 5.0 μg/m3 (21) 22.0
 
Sept. 22, 2020, 7 a.m. 19.1 ppb (18) 6.0 ppb (6) N/A 13.0 ppb (12) N/A N/A N/A 0.35 ppb (4) N/A 6.0 μg/m3 (25) 25.0
 
Sept. 22, 2020, 6 a.m. 24.4 ppb (23) 9.7 ppb (9) N/A 15.0 ppb (14) N/A N/A N/A 0.48 ppb (5) N/A 7.0 μg/m3 (29) 29.0
 
Sept. 22, 2020, 5 a.m. 39.3 ppb (36) 18.0 ppb (17) N/A 21.0 ppb (19) N/A N/A N/A 0.6 ppb (7) N/A 11.0 μg/m3 (46) 46.0
 
Sept. 22, 2020, 4 a.m. 50.1 ppb (46) 24.0 ppb (22) N/A 26.0 ppb (24) N/A N/A N/A 0.59 ppb (7) N/A 8.0 μg/m3 (33) 46.0
 
Sept. 22, 2020, 3 a.m. 55.8 ppb (52) 28.0 ppb (26) N/A 28.0 ppb (26) N/A N/A N/A 0.72 ppb (8) N/A 5.0 μg/m3 (21) 52.0
 
Sept. 22, 2020, 2 a.m. 29.4 ppb (27) 11.6 ppb (11) N/A 18.0 ppb (17) N/A N/A N/A 0.54 ppb (6) N/A 7.0 μg/m3 (29) 29.0
 
Sept. 22, 2020, 1 a.m. 32.8 ppb (30) 16.9 ppb (16) N/A 16.0 ppb (15) N/A N/A N/A 0.6 ppb (7) N/A 6.0 μg/m3 (25) 30.0
 
Sept. 22, 2020, midnight 41.1 ppb (38) 23.5 ppb (22) N/A 18.0 ppb (17) N/A N/A N/A 0.74 ppb (8) N/A 9.0 μg/m3 (38) 38.0
 
Sept. 21, 2020, 11 p.m. 37.9 ppb (35) 20.9 ppb (19) N/A 17.0 ppb (16) N/A N/A N/A 0.62 ppb (7) N/A 9.0 μg/m3 (38) 38.0
 
Sept. 21, 2020, 10 p.m. 47.8 ppb (44) 28.4 ppb (26) N/A 19.0 ppb (18) N/A N/A N/A 0.62 ppb (7) N/A 8.0 μg/m3 (33) 44.0
 
Sept. 21, 2020, 9 p.m. 78.4 ppb (76) 58.9 ppb (55) N/A 19.0 ppb (18) N/A N/A N/A 0.73 ppb (8) N/A 9.0 μg/m3 (38) 76.0
 
Sept. 21, 2020, 8 p.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 12.0 μg/m3 (50) 50.0
 
Sept. 21, 2020, 7 p.m. 118.9 ppb (103) 95.5 ppb (94) N/A 23.0 ppb (21) N/A N/A N/A 0.78 ppb (9) N/A 16.0 μg/m3 (59) 103.0
 
Sept. 21, 2020, 6 p.m. 121.5 ppb (104) 97.3 ppb (96) N/A 24.0 ppb (22) N/A N/A N/A 0.75 ppb (8) N/A 12.0 μg/m3 (50) 104.0
 
Sept. 21, 2020, 5 p.m. 124.9 ppb (105) 98.7 ppb (98) N/A 26.0 ppb (24) N/A N/A N/A 0.75 ppb (8) N/A 11.0 μg/m3 (46) 105.0
 
Sept. 21, 2020, 4 p.m. 146.1 ppb (109) 122.8 ppb (104) N/A 23.0 ppb (21) N/A N/A N/A 0.65 ppb (7) N/A 13.0 μg/m3 (52) 109.0
 
Sept. 21, 2020, 3 p.m. 68.8 ppb (66) 55.2 ppb (51) N/A 14.0 ppb (13) N/A N/A N/A 0.68 ppb (8) N/A 5.0 μg/m3 (21) 66.0
 
Sept. 21, 2020, 2 p.m. 126.8 ppb (105) 106.4 ppb (101) N/A 20.0 ppb (19) N/A N/A N/A 0.79 ppb (9) N/A 16.0 μg/m3 (59) 105.0
 
Sept. 21, 2020, 1 p.m. 161.2 ppb (112) 132.4 ppb (106) N/A 29.0 ppb (27) N/A N/A N/A 0.88 ppb (10) N/A 16.0 μg/m3 (59) 112.0
 
Sept. 21, 2020, noon 107.8 ppb (101) 83.9 ppb (82) N/A 24.0 ppb (22) N/A N/A N/A 0.89 ppb (10) N/A 13.0 μg/m3 (52) 101.0
 
Sept. 21, 2020, 11 a.m. 65.7 ppb (62) 45.5 ppb (42) N/A 20.0 ppb (19) N/A N/A N/A 0.61 ppb (7) N/A 13.0 μg/m3 (52) 62.0
 
Sept. 21, 2020, 10 a.m. 47.8 ppb (44) 26.7 ppb (25) N/A 21.0 ppb (19) N/A N/A N/A 0.36 ppb (4) N/A 6.0 μg/m3 (25) 44.0
 
Sept. 21, 2020, 9 a.m. 75.8 ppb (73) 52.6 ppb (49) N/A 23.0 ppb (21) N/A N/A N/A 0.43 ppb (5) N/A 8.0 μg/m3 (33) 73.0
 
Sept. 21, 2020, 8 a.m. 67.0 ppb (64) 42.8 ppb (40) N/A 24.0 ppb (22) N/A N/A N/A 0.57 ppb (6) N/A 18.0 μg/m3 (63) 64.0
 
Sept. 21, 2020, 7 a.m. 78.9 ppb (76) 50.6 ppb (47) N/A 28.0 ppb (26) N/A N/A N/A 0.59 ppb (7) N/A 13.0 μg/m3 (52) 76.0
 
Sept. 21, 2020, 6 a.m. 25.3 ppb (23) 6.8 ppb (6) N/A 19.0 ppb (18) N/A N/A N/A 0.6 ppb (7) N/A 9.0 μg/m3 (38) 38.0
 
Sept. 21, 2020, 5 a.m. 74.3 ppb (72) 45.6 ppb (42) N/A 29.0 ppb (27) N/A N/A N/A 0.84 ppb (9) N/A 8.0 μg/m3 (33) 72.0
 
Sept. 21, 2020, 4 a.m. 73.6 ppb (71) 38.1 ppb (35) N/A 35.0 ppb (32) N/A N/A N/A 0.81 ppb (9) N/A 8.0 μg/m3 (33) 71.0
 
Sept. 21, 2020, 3 a.m. 32.6 ppb (30) 7.9 ppb (7) N/A 25.0 ppb (23) N/A N/A N/A 0.62 ppb (7) N/A 9.0 μg/m3 (38) 38.0
 
Sept. 21, 2020, 2 a.m. 32.3 ppb (30) 9.1 ppb (8) N/A 23.0 ppb (21) N/A N/A N/A 0.69 ppb (8) N/A 3.0 μg/m3 (12) 30.0
 
Sept. 21, 2020, 1 a.m. 37.8 ppb (35) 20.0 ppb (19) N/A 18.0 ppb (17) N/A N/A N/A 0.8 ppb (9) N/A 3.0 μg/m3 (12) 35.0
 
Sept. 21, 2020, midnight 31.9 ppb (30) 18.4 ppb (17) N/A 14.0 ppb (13) N/A N/A N/A 0.84 ppb (9) N/A 6.0 μg/m3 (25) 30.0
 
Sept. 20, 2020, 11 p.m. 46.9 ppb (43) 23.4 ppb (22) N/A 24.0 ppb (22) N/A N/A N/A 0.63 ppb (7) N/A 9.0 μg/m3 (38) 43.0
 
Sept. 20, 2020, 10 p.m. 33.6 ppb (31) 18.1 ppb (17) N/A 16.0 ppb (15) N/A N/A N/A 0.61 ppb (7) N/A 6.0 μg/m3 (25) 31.0
 
Sept. 20, 2020, 9 p.m. 49.1 ppb (45) 28.5 ppb (26) N/A 21.0 ppb (19) N/A N/A N/A 0.72 ppb (8) N/A 6.0 μg/m3 (25) 45.0
 
Sept. 20, 2020, 8 p.m. 38.2 ppb (35) 21.7 ppb (20) N/A 16.0 ppb (15) N/A N/A N/A 0.67 ppb (7) N/A 4.0 μg/m3 (17) 35.0
 
Sept. 20, 2020, 7 p.m. 34.3 ppb (32) 21.4 ppb (20) N/A 13.0 ppb (12) N/A N/A N/A 0.55 ppb (6) N/A 8.0 μg/m3 (33) 33.0
 
Sept. 20, 2020, 6 p.m. 42.2 ppb (39) 23.8 ppb (22) N/A 18.0 ppb (17) N/A N/A N/A 0.66 ppb (7) N/A 9.0 μg/m3 (38) 39.0
 
Sept. 20, 2020, 5 p.m. 24.7 ppb (23) 13.9 ppb (13) N/A 11.0 ppb (10) N/A N/A N/A 0.53 ppb (6) N/A 6.0 μg/m3 (25) 25.0
 
Sept. 20, 2020, 4 p.m. 22.9 ppb (21) 12.3 ppb (11) N/A 11.0 ppb (10) N/A N/A N/A 0.52 ppb (6) N/A 6.0 μg/m3 (25) 25.0
 
Sept. 20, 2020, 3 p.m. 19.6 ppb (18) 8.1 ppb (8) N/A 12.0 ppb (11) N/A N/A N/A 0.47 ppb (5) N/A 3.0 μg/m3 (12) 18.0
 
Sept. 20, 2020, 2 p.m. 9.8 ppb (9) 2.2 ppb (2) N/A 8.0 ppb (7) N/A N/A N/A 0.35 ppb (4) N/A 4.0 μg/m3 (17) 17.0
 
Sept. 20, 2020, 1 p.m. 6.9 ppb (6) 0.7 ppb (1) N/A 6.0 ppb (6) N/A N/A N/A 0.36 ppb (4) N/A 8.0 μg/m3 (33) 33.0
 
Sept. 20, 2020, noon 12.2 ppb (11) 4.0 ppb (4) N/A 8.0 ppb (7) N/A N/A N/A 0.4 ppb (4) N/A 12.0 μg/m3 (50) 50.0
 
Sept. 20, 2020, 11 a.m. 12.2 ppb (11) 2.7 ppb (3) N/A 9.0 ppb (8) N/A N/A N/A 0.34 ppb (4) N/A 3.0 μg/m3 (12) 12.0
 
Sept. 20, 2020, 10 a.m. 8.9 ppb (8) 1.1 ppb (1) N/A 8.0 ppb (7) N/A N/A N/A 0.32 ppb (4) N/A 3.0 μg/m3 (12) 12.0
 
Sept. 20, 2020, 9 a.m. 8.7 ppb (8) 1.7 ppb (2) N/A 7.0 ppb (6) N/A N/A N/A 0.35 ppb (4) N/A 3.0 μg/m3 (12) 12.0
 
Sept. 20, 2020, 8 a.m. 5.6 ppb (5) 0.7 ppb (1) N/A 5.0 ppb (5) N/A N/A N/A 0.36 ppb (4) N/A 4.0 μg/m3 (17) 17.0
 
Sept. 20, 2020, 7 a.m. 5.2 ppb (5) 0.6 ppb (1) N/A 5.0 ppb (5) N/A N/A N/A 0.36 ppb (4) N/A 5.0 μg/m3 (21) 21.0
 
Sept. 20, 2020, 6 a.m. 7.5 ppb (7) 2.2 ppb (2) N/A 5.0 ppb (5) N/A N/A N/A 0.32 ppb (4) N/A 4.0 μg/m3 (17) 17.0
 
Sept. 20, 2020, 5 a.m. 9.4 ppb (9) 2.5 ppb (2) N/A 7.0 ppb (6) N/A N/A N/A 0.34 ppb (4) N/A 4.0 μg/m3 (17) 17.0
 
Sept. 20, 2020, 4 a.m. 21.0 ppb (19) 4.7 ppb (4) N/A 16.0 ppb (15) N/A N/A N/A 0.39 ppb (4) N/A 7.0 μg/m3 (29) 29.0
 
Sept. 20, 2020, 3 a.m. 20.3 ppb (19) 7.2 ppb (7) N/A 13.0 ppb (12) N/A N/A N/A 0.48 ppb (5) N/A 7.0 μg/m3 (29) 29.0
 
Sept. 20, 2020, 2 a.m. 23.7 ppb (22) 9.0 ppb (8) N/A 15.0 ppb (14) N/A N/A N/A 0.48 ppb (5) N/A 5.0 μg/m3 (21) 22.0
 
Sept. 20, 2020, 1 a.m. 19.2 ppb (18) 7.1 ppb (7) N/A 12.0 ppb (11) N/A N/A N/A 0.43 ppb (5) N/A 7.0 μg/m3 (29) 29.0
 
Sept. 20, 2020, midnight 42.5 ppb (39) 21.7 ppb (20) N/A 21.0 ppb (19) N/A N/A N/A 0.5 ppb (6) N/A 5.0 μg/m3 (21) 39.0
 
Sept. 19, 2020, 11 p.m. 42.5 ppb (39) 22.8 ppb (21) N/A 20.0 ppb (19) N/A N/A N/A 0.62 ppb (7) N/A 7.0 μg/m3 (29) 39.0
 
Sept. 19, 2020, 10 p.m. 33.5 ppb (31) 20.0 ppb (19) N/A 13.0 ppb (12) N/A N/A N/A 0.65 ppb (7) N/A 6.0 μg/m3 (25) 31.0
 
Sept. 19, 2020, 9 p.m. 24.4 ppb (23) 13.9 ppb (13) N/A 11.0 ppb (10) N/A N/A N/A 0.51 ppb (6) N/A 3.0 μg/m3 (12) 23.0
 
Sept. 19, 2020, 8 p.m. 22.5 ppb (21) 12.3 ppb (11) N/A 10.0 ppb (9) N/A N/A N/A 0.47 ppb (5) N/A 3.0 μg/m3 (12) 21.0
 
Sept. 19, 2020, 7 p.m. 29.1 ppb (27) 17.5 ppb (16) N/A 12.0 ppb (11) N/A N/A N/A 0.51 ppb (6) N/A 5.0 μg/m3 (21) 27.0
 
Sept. 19, 2020, 6 p.m. 33.2 ppb (31) 20.0 ppb (19) N/A 13.0 ppb (12) N/A N/A N/A 0.49 ppb (5) N/A 2.0 μg/m3 (8) 31.0
 
Sept. 19, 2020, 5 p.m. 33.3 ppb (31) 20.8 ppb (19) N/A 12.0 ppb (11) N/A N/A N/A 0.53 ppb (6) N/A 2.0 μg/m3 (8) 31.0
 
Sept. 19, 2020, 4 p.m. 38.0 ppb (35) 21.5 ppb (20) N/A 16.0 ppb (15) N/A N/A N/A 0.55 ppb (6) N/A 5.0 μg/m3 (21) 35.0
 
Sept. 19, 2020, 3 p.m. 28.4 ppb (26) 14.9 ppb (14) N/A 13.0 ppb (12) N/A N/A N/A 0.43 ppb (5) N/A 6.0 μg/m3 (25) 26.0
 
Sept. 19, 2020, 2 p.m. 39.8 ppb (37) 23.9 ppb (22) N/A 16.0 ppb (15) N/A N/A N/A 0.46 ppb (5) N/A 4.0 μg/m3 (17) 37.0
 
Sept. 19, 2020, 1 p.m. 28.2 ppb (26) 13.7 ppb (13) N/A 14.0 ppb (13) N/A N/A N/A 0.37 ppb (4) N/A 5.0 μg/m3 (21) 26.0
 
Sept. 19, 2020, noon 24.5 ppb (23) 11.4 ppb (11) N/A 13.0 ppb (12) N/A N/A N/A 0.36 ppb (4) N/A 0.0 μg/m3 (0) 23.0
 
Sept. 19, 2020, 11 a.m. 20.7 ppb (19) 8.3 ppb (8) N/A 12.0 ppb (11) N/A N/A N/A 0.19 ppb (2) N/A 2.0 μg/m3 (8) 19.0
 
Sept. 19, 2020, 10 a.m. 20.3 ppb (19) 8.1 ppb (8) N/A 12.0 ppb (11) N/A N/A N/A 0.26 ppb (3) N/A 4.0 μg/m3 (17) 19.0
 
Sept. 19, 2020, 9 a.m. 15.0 ppb (14) 4.9 ppb (5) N/A 10.0 ppb (9) N/A N/A N/A 0.22 ppb (2) N/A 5.0 μg/m3 (21) 21.0
 
Sept. 19, 2020, 8 a.m. 9.5 ppb (9) 3.3 ppb (3) N/A 6.0 ppb (6) N/A N/A N/A 0.23 ppb (3) N/A 5.0 μg/m3 (21) 21.0
 
Sept. 19, 2020, 7 a.m. 15.5 ppb (14) 6.4 ppb (6) N/A 9.0 ppb (8) N/A N/A N/A 0.29 ppb (3) N/A 5.0 μg/m3 (21) 21.0
 
Sept. 19, 2020, 6 a.m. 23.4 ppb (22) 11.6 ppb (11) N/A 12.0 ppb (11) N/A N/A N/A 0.31 ppb (3) N/A 8.0 μg/m3 (33) 33.0
 
Sept. 19, 2020, 5 a.m. 32.0 ppb (30) 16.0 ppb (15) N/A 16.0 ppb (15) N/A N/A N/A 0.5 ppb (6) N/A 23.0 μg/m3 (73) 73.0
 
Sept. 19, 2020, 4 a.m. 26.9 ppb (25) 11.3 ppb (10) N/A 16.0 ppb (15) N/A N/A N/A 0.62 ppb (7) N/A 24.0 μg/m3 (76) 76.0
 
Sept. 19, 2020, 3 a.m. 28.7 ppb (27) 8.2 ppb (8) N/A 21.0 ppb (19) N/A N/A N/A 0.57 ppb (6) N/A 32.0 μg/m3 (93) 93.0
 
Sept. 19, 2020, 2 a.m. 18.4 ppb (17) 4.1 ppb (4) N/A 14.0 ppb (13) N/A N/A N/A 0.47 ppb (5) N/A 29.0 μg/m3 (86) 86.0
 
Sept. 19, 2020, 1 a.m. 25.2 ppb (23) 7.8 ppb (7) N/A 17.0 ppb (16) N/A N/A N/A 0.62 ppb (7) N/A 31.0 μg/m3 (90) 90.0
 
Sept. 19, 2020, midnight 17.9 ppb (17) 5.5 ppb (5) N/A 12.0 ppb (11) N/A N/A N/A 0.43 ppb (5) N/A 29.0 μg/m3 (86) 86.0