ID: 2379

AQSQID: 530330030

Site Name: Seattle-10th & Weller

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

Updated: Jan. 16, 2021, 10:31 a.m.

Location: Seattle (Little Saigon), WA

Reporting: True, Located: True

Current AQI: 46.0

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
Jan. 16, 2021, 9 a.m. 26.2 ppb (25) 12.2 ppb (12) N/A 14.0 ppb (14) N/A N/A N/A 0.46 ppb (6) N/A 11.0 μg/m3 (46) 46.0
 
Jan. 16, 2021, 8 a.m. 23.6 ppb (23) 8.5 ppb (9) N/A 15.0 ppb (15) N/A N/A N/A 0.39 ppb (5) N/A 10.0 μg/m3 (42) 42.0
 
Jan. 16, 2021, 7 a.m. 36.3 ppb (35) 18.4 ppb (18) N/A 18.0 ppb (17) N/A N/A N/A 0.57 ppb (7) N/A 14.0 μg/m3 (55) 55.0
 
Jan. 16, 2021, 6 a.m. 34.0 ppb (33) 14.9 ppb (15) N/A 19.0 ppb (18) N/A N/A N/A 0.56 ppb (7) N/A 16.0 μg/m3 (60) 60.0
 
Jan. 16, 2021, 5 a.m. 31.8 ppb (30) 10.6 ppb (10) N/A 21.0 ppb (20) N/A N/A N/A 0.49 ppb (6) N/A 17.0 μg/m3 (62) 62.0
 
Jan. 16, 2021, 4 a.m. 45.4 ppb (43) 20.5 ppb (20) N/A 25.0 ppb (24) N/A N/A N/A 0.7 ppb (8) N/A 21.0 μg/m3 (70) 70.0
 
Jan. 16, 2021, 3 a.m. 39.8 ppb (38) 13.1 ppb (13) N/A 27.0 ppb (26) N/A N/A N/A 0.72 ppb (8) N/A 16.0 μg/m3 (60) 60.0
 
Jan. 16, 2021, 2 a.m. 32.1 ppb (31) 7.7 ppb (8) N/A 24.0 ppb (23) N/A N/A N/A 0.53 ppb (6) N/A 9.0 μg/m3 (38) 38.0
 
Jan. 16, 2021, 1 a.m. 25.8 ppb (25) 5.9 ppb (6) N/A 20.0 ppb (19) N/A N/A N/A 0.38 ppb (5) N/A 8.0 μg/m3 (34) 34.0
 
Jan. 16, 2021, midnight 19.3 ppb (19) 4.7 ppb (5) N/A 15.0 ppb (15) N/A N/A N/A 0.32 ppb (4) N/A 8.0 μg/m3 (34) 34.0
 
Jan. 15, 2021, 11 p.m. 18.1 ppb (18) 6.8 ppb (7) N/A 11.0 ppb (11) N/A N/A N/A 0.27 ppb (4) N/A 3.0 μg/m3 (13) 18.0
 
Jan. 15, 2021, 10 p.m. 45.9 ppb (44) 28.0 ppb (27) N/A 18.0 ppb (17) N/A N/A N/A 0.45 ppb (6) N/A 4.0 μg/m3 (17) 44.0
 
Jan. 15, 2021, 9 p.m. 48.4 ppb (46) 30.5 ppb (29) N/A 18.0 ppb (17) N/A N/A N/A 0.4 ppb (5) N/A 8.0 μg/m3 (34) 46.0
 
Jan. 15, 2021, 8 p.m. 93.9 ppb (94) 65.9 ppb (64) N/A 28.0 ppb (27) N/A N/A N/A 0.6 ppb (7) N/A 8.0 μg/m3 (34) 94.0
 
Jan. 15, 2021, 7 p.m. 93.7 ppb (94) 61.8 ppb (60) N/A 32.0 ppb (31) N/A N/A N/A 0.56 ppb (7) N/A 10.0 μg/m3 (42) 94.0
 
Jan. 15, 2021, 6 p.m. 52.1 ppb (50) 31.9 ppb (31) N/A 20.0 ppb (19) N/A N/A N/A 0.46 ppb (6) N/A 6.0 μg/m3 (25) 50.0
 
Jan. 15, 2021, 5 p.m. 83.8 ppb (83) 58.1 ppb (56) N/A 26.0 ppb (25) N/A N/A N/A 0.67 ppb (8) N/A 6.0 μg/m3 (25) 83.0
 
Jan. 15, 2021, 4 p.m. 54.2 ppb (52) 29.7 ppb (29) N/A 25.0 ppb (24) N/A N/A N/A 0.47 ppb (6) N/A 5.0 μg/m3 (21) 52.0
 
Jan. 15, 2021, 3 p.m. 61.6 ppb (60) 36.7 ppb (35) N/A 25.0 ppb (24) N/A N/A N/A 0.41 ppb (5) N/A 6.0 μg/m3 (25) 60.0
 
Jan. 15, 2021, 2 p.m. 112.7 ppb (104) 81.3 ppb (81) N/A 31.0 ppb (30) N/A N/A N/A 0.65 ppb (8) N/A 9.0 μg/m3 (38) 104.0
 
Jan. 15, 2021, 1 p.m. 92.8 ppb (93) 66.0 ppb (64) N/A 27.0 ppb (26) N/A N/A N/A 0.65 ppb (8) N/A 9.0 μg/m3 (38) 93.0
 
Jan. 15, 2021, noon 27.3 ppb (26) 12.4 ppb (12) N/A 15.0 ppb (15) N/A N/A N/A 0.37 ppb (5) N/A 4.0 μg/m3 (17) 26.0
 
Jan. 15, 2021, 11 a.m. 7.2 ppb (7) 1.7 ppb (2) N/A 6.0 ppb (6) N/A N/A N/A 0.11 ppb (2) N/A 1.0 μg/m3 (5) 7.0
 
Jan. 15, 2021, 10 a.m. 5.8 ppb (6) 1.5 ppb (2) N/A 4.0 ppb (4) N/A N/A N/A 0.09 ppb (2) N/A 1.0 μg/m3 (5) 6.0
 
Jan. 15, 2021, 9 a.m. 8.8 ppb (9) 2.1 ppb (2) N/A 7.0 ppb (7) N/A N/A N/A 0.12 ppb (2) N/A 4.0 μg/m3 (17) 17.0
 
Jan. 15, 2021, 8 a.m. 16.5 ppb (16) 2.3 ppb (3) N/A 14.0 ppb (14) N/A N/A N/A 0.19 ppb (3) N/A 6.0 μg/m3 (25) 25.0
 
Jan. 15, 2021, 7 a.m. 23.4 ppb (23) 4.3 ppb (5) N/A 19.0 ppb (18) N/A N/A N/A 0.24 ppb (3) N/A 8.0 μg/m3 (34) 34.0
 
Jan. 15, 2021, 6 a.m. 31.4 ppb (30) 11.2 ppb (11) N/A 20.0 ppb (19) N/A N/A N/A 0.39 ppb (5) N/A 9.0 μg/m3 (38) 38.0
 
Jan. 15, 2021, 5 a.m. 63.9 ppb (62) 38.2 ppb (37) N/A 26.0 ppb (25) N/A N/A N/A 0.64 ppb (7) N/A 11.0 μg/m3 (46) 62.0
 
Jan. 15, 2021, 4 a.m. 51.8 ppb (49) 24.7 ppb (24) N/A 27.0 ppb (26) N/A N/A N/A 0.59 ppb (7) N/A 11.0 μg/m3 (46) 49.0
 
Jan. 15, 2021, 3 a.m. 106.5 ppb (103) 75.1 ppb (74) N/A 31.0 ppb (30) N/A N/A N/A 0.9 ppb (11) N/A 14.0 μg/m3 (55) 103.0
 
Jan. 15, 2021, 2 a.m. 121.9 ppb (105) 89.3 ppb (89) N/A 33.0 ppb (32) N/A N/A N/A 0.84 ppb (10) N/A 12.0 μg/m3 (50) 105.0
 
Jan. 15, 2021, 1 a.m. 188.0 ppb (118) 150.3 ppb (111) N/A 38.0 ppb (36) N/A N/A N/A 1.19 ppb (14) N/A 19.0 μg/m3 (66) 118.0
 
Jan. 15, 2021, midnight 112.9 ppb (104) 79.9 ppb (79) N/A 33.0 ppb (32) N/A N/A N/A 0.93 ppb (11) N/A 8.0 μg/m3 (34) 104.0
 
Jan. 14, 2021, 11 p.m. 148.5 ppb (110) 110.4 ppb (103) N/A 38.0 ppb (36) N/A N/A N/A 0.85 ppb (10) N/A 10.0 μg/m3 (42) 110.0
 
Jan. 14, 2021, 10 p.m. 95.1 ppb (95) 65.4 ppb (64) N/A 30.0 ppb (29) N/A N/A N/A 0.71 ppb (8) N/A 5.0 μg/m3 (21) 95.0
 
Jan. 14, 2021, 9 p.m. 55.7 ppb (53) 36.6 ppb (35) N/A 19.0 ppb (18) N/A N/A N/A 0.56 ppb (7) N/A 0.0 μg/m3 (0) 53.0
 
Jan. 14, 2021, 8 p.m. 44.7 ppb (43) 27.0 ppb (26) N/A 18.0 ppb (17) N/A N/A N/A 0.5 ppb (6) N/A 1.0 μg/m3 (5) 43.0
 
Jan. 14, 2021, 7 p.m. 72.3 ppb (71) 50.5 ppb (48) N/A 22.0 ppb (21) N/A N/A N/A 0.57 ppb (7) N/A 3.0 μg/m3 (13) 71.0
 
Jan. 14, 2021, 6 p.m. 39.0 ppb (37) 19.7 ppb (19) N/A 19.0 ppb (18) N/A N/A N/A 0.37 ppb (5) N/A 6.0 μg/m3 (25) 37.0
 
Jan. 14, 2021, 5 p.m. 70.3 ppb (69) 43.6 ppb (42) N/A 27.0 ppb (26) N/A N/A N/A 0.5 ppb (6) N/A 9.0 μg/m3 (38) 69.0
 
Jan. 14, 2021, 4 p.m. 133.7 ppb (108) 98.6 ppb (99) N/A 35.0 ppb (34) N/A N/A N/A 0.64 ppb (7) N/A 9.0 μg/m3 (38) 108.0
 
Jan. 14, 2021, 3 p.m. 75.8 ppb (75) 44.7 ppb (43) N/A 31.0 ppb (30) N/A N/A N/A 0.42 ppb (5) N/A 5.0 μg/m3 (21) 75.0
 
Jan. 14, 2021, 2 p.m. 25.2 ppb (24) 12.7 ppb (12) N/A 13.0 ppb (13) N/A N/A N/A 0.29 ppb (4) N/A 0.0 μg/m3 (0) 24.0
 
Jan. 14, 2021, 1 p.m. 16.4 ppb (16) 3.4 ppb (4) N/A 13.0 ppb (13) N/A N/A N/A 0.21 ppb (3) N/A 2.0 μg/m3 (9) 16.0
 
Jan. 14, 2021, noon 13.8 ppb (14) 3.8 ppb (4) N/A 10.0 ppb (10) N/A N/A N/A 0.21 ppb (3) N/A 6.0 μg/m3 (25) 25.0
 
Jan. 14, 2021, 11 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
 
Jan. 14, 2021, 10 a.m. 10.4 ppb (10) 1.5 ppb (2) N/A 9.0 ppb (9) N/A N/A N/A 0.27 ppb (4) N/A 7.0 μg/m3 (30) 30.0
 
Jan. 14, 2021, 9 a.m. 18.4 ppb (18) 3.4 ppb (4) N/A 15.0 ppb (15) N/A N/A N/A 0.39 ppb (5) N/A 11.0 μg/m3 (46) 46.0
 
Jan. 14, 2021, 8 a.m. 24.9 ppb (24) 5.1 ppb (5) N/A 20.0 ppb (19) N/A N/A N/A 0.47 ppb (6) N/A 13.0 μg/m3 (53) 53.0
 
Jan. 14, 2021, 7 a.m. 39.1 ppb (37) 14.6 ppb (14) N/A 24.0 ppb (23) N/A N/A N/A 0.55 ppb (7) N/A 19.0 μg/m3 (66) 66.0
 
Jan. 14, 2021, 6 a.m. 35.3 ppb (34) 11.4 ppb (11) N/A 24.0 ppb (23) N/A N/A N/A 0.62 ppb (7) N/A 15.0 μg/m3 (58) 58.0
 
Jan. 14, 2021, 5 a.m. 48.1 ppb (46) 21.2 ppb (20) N/A 27.0 ppb (26) N/A N/A N/A 0.65 ppb (8) N/A 18.0 μg/m3 (64) 64.0
 
Jan. 14, 2021, 4 a.m. 46.8 ppb (45) 15.8 ppb (15) N/A 31.0 ppb (30) N/A N/A N/A 0.59 ppb (7) N/A 13.0 μg/m3 (53) 53.0
 
Jan. 14, 2021, 3 a.m. 42.7 ppb (41) 13.3 ppb (13) N/A 29.0 ppb (28) N/A N/A N/A 0.55 ppb (7) N/A 9.0 μg/m3 (38) 41.0
 
Jan. 14, 2021, 2 a.m. 30.7 ppb (29) 10.5 ppb (10) N/A 20.0 ppb (19) N/A N/A N/A 0.42 ppb (5) N/A 11.0 μg/m3 (46) 46.0
 
Jan. 14, 2021, 1 a.m. 45.2 ppb (43) 16.8 ppb (16) N/A 28.0 ppb (27) N/A N/A N/A 0.56 ppb (7) N/A 16.0 μg/m3 (60) 60.0
 
Jan. 14, 2021, midnight 55.0 ppb (53) 27.4 ppb (26) N/A 28.0 ppb (27) N/A N/A N/A 0.61 ppb (7) N/A 8.0 μg/m3 (34) 53.0
 
Jan. 13, 2021, 11 p.m. 49.3 ppb (47) 28.0 ppb (27) N/A 21.0 ppb (20) N/A N/A N/A 0.56 ppb (7) N/A 7.0 μg/m3 (30) 47.0
 
Jan. 13, 2021, 10 p.m. 45.7 ppb (44) 26.1 ppb (25) N/A 19.0 ppb (18) N/A N/A N/A 0.54 ppb (6) N/A 8.0 μg/m3 (34) 44.0
 
Jan. 13, 2021, 9 p.m. 52.4 ppb (50) 32.4 ppb (31) N/A 20.0 ppb (19) N/A N/A N/A 0.52 ppb (6) N/A 7.0 μg/m3 (30) 50.0
 
Jan. 13, 2021, 8 p.m. 51.4 ppb (49) 31.3 ppb (30) N/A 20.0 ppb (19) N/A N/A N/A 0.48 ppb (6) N/A 8.0 μg/m3 (34) 49.0
 
Jan. 13, 2021, 7 p.m. 48.6 ppb (46) 31.4 ppb (30) N/A 17.0 ppb (17) N/A N/A N/A 0.37 ppb (5) N/A 9.0 μg/m3 (38) 46.0
 
Jan. 13, 2021, 6 p.m. 69.8 ppb (68) 44.8 ppb (43) N/A 25.0 ppb (24) N/A N/A N/A 0.43 ppb (5) N/A 10.0 μg/m3 (42) 68.0
 
Jan. 13, 2021, 5 p.m. 66.7 ppb (65) 40.1 ppb (38) N/A 27.0 ppb (26) N/A N/A N/A 0.37 ppb (5) N/A 11.0 μg/m3 (46) 65.0
 
Jan. 13, 2021, 4 p.m. 50.1 ppb (48) 23.5 ppb (23) N/A 27.0 ppb (26) N/A N/A N/A 0.29 ppb (4) N/A 9.0 μg/m3 (38) 48.0
 
Jan. 13, 2021, 3 p.m. 50.7 ppb (48) 24.9 ppb (24) N/A 26.0 ppb (25) N/A N/A N/A 0.27 ppb (4) N/A 9.0 μg/m3 (38) 48.0
 
Jan. 13, 2021, 2 p.m. 40.7 ppb (39) 18.5 ppb (18) N/A 22.0 ppb (21) N/A N/A N/A 0.28 ppb (4) N/A 10.0 μg/m3 (42) 42.0
 
Jan. 13, 2021, 1 p.m. 39.3 ppb (38) 18.3 ppb (18) N/A 21.0 ppb (20) N/A N/A N/A 0.3 ppb (4) N/A 5.0 μg/m3 (21) 38.0
 
Jan. 13, 2021, noon 14.9 ppb (15) 4.6 ppb (5) N/A 10.0 ppb (10) N/A N/A N/A 0.19 ppb (3) N/A 2.0 μg/m3 (9) 15.0
 
Jan. 13, 2021, 11 a.m. 11.3 ppb (11) 2.7 ppb (3) N/A 9.0 ppb (9) N/A N/A N/A 0.14 ppb (2) N/A -2.0 μg/m3 (0) 11.0
 
Jan. 13, 2021, 10 a.m. 7.5 ppb (8) 2.0 ppb (2) N/A 6.0 ppb (6) N/A N/A N/A 0.15 ppb (2) N/A 1.0 μg/m3 (5) 8.0
 
Jan. 13, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 3.0 μg/m3 (13) 13.0
 
Jan. 13, 2021, 8 a.m. 4.2 ppb (4) 1.2 ppb (2) N/A 3.0 ppb (3) N/A N/A N/A 0.11 ppb (2) N/A 2.0 μg/m3 (9) 9.0
 
Jan. 13, 2021, 7 a.m. 7.4 ppb (7) 2.1 ppb (2) N/A 5.0 ppb (5) N/A N/A N/A 0.11 ppb (2) N/A 1.0 μg/m3 (5) 7.0
 
Jan. 13, 2021, 6 a.m. 8.9 ppb (9) 2.3 ppb (3) N/A 7.0 ppb (7) N/A N/A N/A 0.13 ppb (2) N/A -1.0 μg/m3 (0) 9.0
 
Jan. 13, 2021, 5 a.m. 10.1 ppb (10) 3.0 ppb (3) N/A 7.0 ppb (7) N/A N/A N/A 0.15 ppb (2) N/A -1.0 μg/m3 (0) 10.0
 
Jan. 13, 2021, 4 a.m. 11.2 ppb (11) 3.6 ppb (4) N/A 8.0 ppb (8) N/A N/A N/A 0.16 ppb (3) N/A 0.0 μg/m3 (0) 11.0
 
Jan. 13, 2021, 3 a.m. 11.7 ppb (12) 2.2 ppb (3) N/A 10.0 ppb (10) N/A N/A N/A 0.22 ppb (3) N/A 1.0 μg/m3 (5) 12.0
 
Jan. 13, 2021, 2 a.m. 14.2 ppb (14) 3.0 ppb (3) N/A 11.0 ppb (11) N/A N/A N/A 0.23 ppb (3) N/A 2.0 μg/m3 (9) 14.0
 
Jan. 13, 2021, 1 a.m. 18.3 ppb (18) 4.3 ppb (5) N/A 14.0 ppb (14) N/A N/A N/A 0.28 ppb (4) N/A 2.0 μg/m3 (9) 18.0
 
Jan. 13, 2021, midnight 33.2 ppb (32) 11.9 ppb (12) N/A 21.0 ppb (20) N/A N/A N/A 0.32 ppb (4) N/A 5.0 μg/m3 (21) 32.0
 
Jan. 12, 2021, 11 p.m. 74.2 ppb (73) 46.6 ppb (44) N/A 28.0 ppb (27) N/A N/A N/A 0.67 ppb (8) N/A 9.0 μg/m3 (38) 73.0
 
Jan. 12, 2021, 10 p.m. 53.3 ppb (51) 33.5 ppb (32) N/A 20.0 ppb (19) N/A N/A N/A 0.49 ppb (6) N/A 3.0 μg/m3 (13) 51.0
 
Jan. 12, 2021, 9 p.m. 41.0 ppb (39) 23.6 ppb (23) N/A 17.0 ppb (17) N/A N/A N/A 0.42 ppb (5) N/A 4.0 μg/m3 (17) 39.0
 
Jan. 12, 2021, 8 p.m. 42.7 ppb (41) 21.7 ppb (21) N/A 21.0 ppb (20) N/A N/A N/A 0.36 ppb (5) N/A 6.0 μg/m3 (25) 41.0
 
Jan. 12, 2021, 7 p.m. 33.0 ppb (32) 18.6 ppb (18) N/A 14.0 ppb (14) N/A N/A N/A 0.25 ppb (3) N/A 2.0 μg/m3 (9) 32.0
 
Jan. 12, 2021, 6 p.m. 39.2 ppb (37) 21.2 ppb (20) N/A 18.0 ppb (17) N/A N/A N/A 0.25 ppb (3) N/A 3.0 μg/m3 (13) 37.0
 
Jan. 12, 2021, 5 p.m. 57.2 ppb (55) 32.4 ppb (31) N/A 25.0 ppb (24) N/A N/A N/A 0.31 ppb (4) N/A 5.0 μg/m3 (21) 55.0
 
Jan. 12, 2021, 4 p.m. 49.7 ppb (47) 23.4 ppb (23) N/A 26.0 ppb (25) N/A N/A N/A 0.33 ppb (4) N/A 1.0 μg/m3 (5) 47.0
 
Jan. 12, 2021, 3 p.m. 21.2 ppb (20) 4.9 ppb (5) N/A 16.0 ppb (16) N/A N/A N/A 0.23 ppb (3) N/A -2.0 μg/m3 (0) 20.0
 
Jan. 12, 2021, 2 p.m. 8.8 ppb (9) 1.3 ppb (2) N/A 8.0 ppb (8) N/A N/A N/A 0.14 ppb (2) N/A -2.0 μg/m3 (0) 9.0
 
Jan. 12, 2021, 1 p.m. 9.9 ppb (10) 1.4 ppb (2) N/A 9.0 ppb (9) N/A N/A N/A 0.18 ppb (3) N/A -1.0 μg/m3 (0) 10.0
 
Jan. 12, 2021, noon 11.0 ppb (11) 1.7 ppb (2) N/A 9.0 ppb (9) N/A N/A N/A 0.14 ppb (2) N/A 0.0 μg/m3 (0) 11.0
 
Jan. 12, 2021, 11 a.m. 9.9 ppb (10) 1.8 ppb (2) N/A 8.0 ppb (8) N/A N/A N/A 0.15 ppb (2) N/A 1.0 μg/m3 (5) 10.0
 
Jan. 12, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 1.0 μg/m3 (5) 5.0
 
Jan. 12, 2021, 9 a.m. 6.1 ppb (6) 1.4 ppb (2) N/A 5.0 ppb (5) N/A N/A N/A 0.11 ppb (2) N/A 0.0 μg/m3 (0) 6.0
 
Jan. 12, 2021, 8 a.m. 6.7 ppb (7) 1.2 ppb (2) N/A 5.0 ppb (5) N/A N/A N/A 0.14 ppb (2) N/A 1.0 μg/m3 (5) 7.0
 
Jan. 12, 2021, 7 a.m. 11.7 ppb (12) 2.5 ppb (3) N/A 9.0 ppb (9) N/A N/A N/A 0.16 ppb (3) N/A 1.0 μg/m3 (5) 12.0
 
Jan. 12, 2021, 6 a.m. 9.7 ppb (10) 2.1 ppb (2) N/A 8.0 ppb (8) N/A N/A N/A 0.14 ppb (2) N/A 0.0 μg/m3 (0) 10.0
 
Jan. 12, 2021, 5 a.m. 9.2 ppb (9) 2.3 ppb (3) N/A 7.0 ppb (7) N/A N/A N/A 0.16 ppb (3) N/A 2.0 μg/m3 (9) 9.0
 
Jan. 12, 2021, 4 a.m. 14.1 ppb (14) 3.2 ppb (4) N/A 11.0 ppb (11) N/A N/A N/A 0.19 ppb (3) N/A 2.0 μg/m3 (9) 14.0
 
Jan. 12, 2021, 3 a.m. 13.7 ppb (13) 2.5 ppb (3) N/A 11.0 ppb (11) N/A N/A N/A 0.21 ppb (3) N/A -1.0 μg/m3 (0) 13.0
 
Jan. 12, 2021, 2 a.m. 15.7 ppb (15) 2.9 ppb (3) N/A 13.0 ppb (13) N/A N/A N/A 0.24 ppb (3) N/A 0.0 μg/m3 (0) 15.0
 
Jan. 12, 2021, 1 a.m. 33.7 ppb (32) 11.0 ppb (11) N/A 23.0 ppb (22) N/A N/A N/A 0.43 ppb (5) N/A 3.0 μg/m3 (13) 32.0
 
Jan. 12, 2021, midnight 38.4 ppb (37) 14.9 ppb (15) N/A 23.0 ppb (22) N/A N/A N/A 0.36 ppb (5) N/A 1.0 μg/m3 (5) 37.0
 
Jan. 11, 2021, 11 p.m. 19.6 ppb (19) 6.2 ppb (6) N/A 13.0 ppb (13) N/A N/A N/A 0.25 ppb (3) N/A 0.0 μg/m3 (0) 19.0
 
Jan. 11, 2021, 10 p.m. 24.3 ppb (23) 11.7 ppb (12) N/A 13.0 ppb (13) N/A N/A N/A 0.28 ppb (4) N/A -2.0 μg/m3 (0) 23.0
 
Jan. 11, 2021, 9 p.m. 25.7 ppb (25) 8.9 ppb (9) N/A 17.0 ppb (17) N/A N/A N/A 0.23 ppb (3) N/A 0.0 μg/m3 (0) 25.0
 
Jan. 11, 2021, 8 p.m. 31.0 ppb (30) 12.7 ppb (12) N/A 18.0 ppb (17) N/A N/A N/A 0.27 ppb (4) N/A 4.0 μg/m3 (17) 30.0
 
Jan. 11, 2021, 7 p.m. 36.5 ppb (35) 16.0 ppb (16) N/A 21.0 ppb (20) N/A N/A N/A 0.33 ppb (4) N/A 6.0 μg/m3 (25) 35.0
 
Jan. 11, 2021, 6 p.m. 55.4 ppb (53) 30.7 ppb (29) N/A 25.0 ppb (24) N/A N/A N/A 0.46 ppb (6) N/A 6.0 μg/m3 (25) 53.0
 
Jan. 11, 2021, 5 p.m. 107.9 ppb (103) 79.8 ppb (79) N/A 28.0 ppb (27) N/A N/A N/A 0.57 ppb (7) N/A 10.0 μg/m3 (42) 103.0
 
Jan. 11, 2021, 4 p.m. 133.2 ppb (108) 103.5 ppb (102) N/A 30.0 ppb (29) N/A N/A N/A 0.68 ppb (8) N/A 12.0 μg/m3 (50) 108.0
 
Jan. 11, 2021, 3 p.m. 25.8 ppb (25) 11.9 ppb (12) N/A 14.0 ppb (14) N/A N/A N/A 0.21 ppb (3) N/A -2.0 μg/m3 (0) 25.0
 
Jan. 11, 2021, 2 p.m. 15.4 ppb (15) 3.6 ppb (4) N/A 12.0 ppb (12) N/A N/A N/A 0.18 ppb (3) N/A 0.0 μg/m3 (0) 15.0
 
Jan. 11, 2021, 1 p.m. 46.1 ppb (44) 28.1 ppb (27) N/A 18.0 ppb (17) N/A N/A N/A 0.47 ppb (6) N/A 3.0 μg/m3 (13) 44.0
 
Jan. 11, 2021, noon 14.2 ppb (14) 3.4 ppb (4) N/A 11.0 ppb (11) N/A N/A N/A 0.15 ppb (2) N/A 6.0 μg/m3 (25) 25.0
 
Jan. 11, 2021, 11 a.m. 40.1 ppb (38) 21.1 ppb (20) N/A 19.0 ppb (18) N/A N/A N/A 0.32 ppb (4) N/A 6.0 μg/m3 (25) 38.0
 
Jan. 11, 2021, 10 a.m. 20.9 ppb (20) 6.2 ppb (6) N/A 15.0 ppb (15) N/A N/A N/A 0.26 ppb (4) N/A 7.0 μg/m3 (30) 30.0
 
Jan. 11, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 10.0 μg/m3 (42) 42.0
 
Jan. 11, 2021, 8 a.m. 23.4 ppb (23) 7.5 ppb (8) N/A 16.0 ppb (16) N/A N/A N/A 0.25 ppb (3) N/A 4.0 μg/m3 (17) 23.0
 
Jan. 11, 2021, 7 a.m. 26.4 ppb (25) 11.1 ppb (11) N/A 15.0 ppb (15) N/A N/A N/A 0.33 ppb (4) N/A 5.0 μg/m3 (21) 25.0
 
Jan. 11, 2021, 6 a.m. 15.6 ppb (15) 3.9 ppb (4) N/A 12.0 ppb (12) N/A N/A N/A 0.22 ppb (3) N/A 6.0 μg/m3 (25) 25.0
 
Jan. 11, 2021, 5 a.m. 20.8 ppb (20) 7.2 ppb (7) N/A 14.0 ppb (14) N/A N/A N/A 0.36 ppb (5) N/A 6.0 μg/m3 (25) 25.0
 
Jan. 11, 2021, 4 a.m. 25.4 ppb (24) 9.2 ppb (9) N/A 16.0 ppb (16) N/A N/A N/A 0.34 ppb (4) N/A 11.0 μg/m3 (46) 46.0
 
Jan. 11, 2021, 3 a.m. 37.1 ppb (35) 18.3 ppb (18) N/A 19.0 ppb (18) N/A N/A N/A 0.59 ppb (7) N/A 10.0 μg/m3 (42) 42.0
 
Jan. 11, 2021, 2 a.m. 41.6 ppb (40) 21.6 ppb (21) N/A 20.0 ppb (19) N/A N/A N/A 0.55 ppb (7) N/A 9.0 μg/m3 (38) 40.0
 
Jan. 11, 2021, 1 a.m. 40.6 ppb (39) 20.7 ppb (20) N/A 20.0 ppb (19) N/A N/A N/A 0.57 ppb (7) N/A 8.0 μg/m3 (34) 39.0
 
Jan. 11, 2021, midnight 19.7 ppb (19) 5.9 ppb (6) N/A 14.0 ppb (14) N/A N/A N/A 0.27 ppb (4) N/A 6.0 μg/m3 (25) 25.0
 
Jan. 10, 2021, 11 p.m. 19.1 ppb (19) 7.6 ppb (8) N/A 12.0 ppb (12) N/A N/A N/A 0.28 ppb (4) N/A 5.0 μg/m3 (21) 21.0
 
Jan. 10, 2021, 10 p.m. 26.9 ppb (26) 14.9 ppb (15) N/A 12.0 ppb (12) N/A N/A N/A 0.41 ppb (5) N/A 8.0 μg/m3 (34) 34.0
 
Jan. 10, 2021, 9 p.m. 52.6 ppb (50) 34.1 ppb (33) N/A 19.0 ppb (18) N/A N/A N/A 0.45 ppb (6) N/A 5.0 μg/m3 (21) 50.0
 
Jan. 10, 2021, 8 p.m. 64.1 ppb (62) 44.2 ppb (42) N/A 20.0 ppb (19) N/A N/A N/A 0.55 ppb (7) N/A 4.0 μg/m3 (17) 62.0
 
Jan. 10, 2021, 7 p.m. 52.9 ppb (50) 33.2 ppb (32) N/A 20.0 ppb (19) N/A N/A N/A 0.56 ppb (7) N/A 5.0 μg/m3 (21) 50.0
 
Jan. 10, 2021, 6 p.m. 34.5 ppb (33) 18.3 ppb (18) N/A 16.0 ppb (16) N/A N/A N/A 0.32 ppb (4) N/A 6.0 μg/m3 (25) 33.0
 
Jan. 10, 2021, 5 p.m. 46.4 ppb (44) 27.7 ppb (27) N/A 19.0 ppb (18) N/A N/A N/A 0.44 ppb (5) N/A 10.0 μg/m3 (42) 44.0
 
Jan. 10, 2021, 4 p.m. 44.4 ppb (42) 22.3 ppb (22) N/A 22.0 ppb (21) N/A N/A N/A 0.41 ppb (5) N/A 11.0 μg/m3 (46) 46.0
 
Jan. 10, 2021, 3 p.m. 55.0 ppb (53) 31.0 ppb (30) N/A 24.0 ppb (23) N/A N/A N/A 0.37 ppb (5) N/A 10.0 μg/m3 (42) 53.0
 
Jan. 10, 2021, 2 p.m. 45.4 ppb (43) 22.7 ppb (22) N/A 23.0 ppb (22) N/A N/A N/A 0.41 ppb (5) N/A 9.0 μg/m3 (38) 43.0
 
Jan. 10, 2021, 1 p.m. 47.2 ppb (45) 25.7 ppb (25) N/A 21.0 ppb (20) N/A N/A N/A 0.35 ppb (4) N/A 9.0 μg/m3 (38) 45.0
 
Jan. 10, 2021, noon 37.8 ppb (36) 16.6 ppb (16) N/A 21.0 ppb (20) N/A N/A N/A 0.29 ppb (4) N/A 8.0 μg/m3 (34) 36.0
 
Jan. 10, 2021, 11 a.m. 37.3 ppb (36) 17.8 ppb (17) N/A 19.0 ppb (18) N/A N/A N/A 0.34 ppb (4) N/A 13.0 μg/m3 (53) 53.0
 
Jan. 10, 2021, 10 a.m. 45.4 ppb (43) 25.7 ppb (25) N/A 20.0 ppb (19) N/A N/A N/A 0.36 ppb (5) N/A 13.0 μg/m3 (53) 53.0
 
Jan. 10, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 8.0 μg/m3 (34) 34.0
 
Jan. 10, 2021, 8 a.m. 56.8 ppb (54) 33.9 ppb (32) N/A 23.0 ppb (22) N/A N/A N/A 0.46 ppb (6) N/A 12.0 μg/m3 (50) 54.0
 
Jan. 10, 2021, 7 a.m. 68.3 ppb (67) 44.4 ppb (42) N/A 24.0 ppb (23) N/A N/A N/A 0.57 ppb (7) N/A 13.0 μg/m3 (53) 67.0
 
Jan. 10, 2021, 6 a.m. 62.1 ppb (60) 37.3 ppb (36) N/A 25.0 ppb (24) N/A N/A N/A 0.63 ppb (7) N/A 8.0 μg/m3 (34) 60.0
 
Jan. 10, 2021, 5 a.m. 29.3 ppb (28) 10.9 ppb (11) N/A 18.0 ppb (17) N/A N/A N/A 0.48 ppb (6) N/A 7.0 μg/m3 (30) 30.0
 
Jan. 10, 2021, 4 a.m. 44.1 ppb (42) 22.6 ppb (22) N/A 22.0 ppb (21) N/A N/A N/A 0.63 ppb (7) N/A 7.0 μg/m3 (30) 42.0
 
Jan. 10, 2021, 3 a.m. 76.8 ppb (76) 53.8 ppb (51) N/A 23.0 ppb (22) N/A N/A N/A 0.86 ppb (11) N/A 16.0 μg/m3 (60) 76.0
 
Jan. 10, 2021, 2 a.m. 68.7 ppb (67) 46.0 ppb (44) N/A 23.0 ppb (22) N/A N/A N/A 0.66 ppb (8) N/A 9.0 μg/m3 (38) 67.0
 
Jan. 10, 2021, 1 a.m. 99.6 ppb (100) 73.0 ppb (72) N/A 27.0 ppb (26) N/A N/A N/A 0.74 ppb (8) N/A 10.0 μg/m3 (42) 100.0
 
Jan. 10, 2021, midnight 95.6 ppb (96) 67.5 ppb (66) N/A 28.0 ppb (27) N/A N/A N/A 0.77 ppb (10) N/A 12.0 μg/m3 (50) 96.0
 
Jan. 9, 2021, 11 p.m. 73.1 ppb (72) 46.6 ppb (44) N/A 27.0 ppb (26) N/A N/A N/A 0.54 ppb (6) N/A 10.0 μg/m3 (42) 72.0
 
Jan. 9, 2021, 10 p.m. 120.9 ppb (105) 93.5 ppb (94) N/A 27.0 ppb (26) N/A N/A N/A 0.7 ppb (8) N/A 13.0 μg/m3 (53) 105.0
 
Jan. 9, 2021, 9 p.m. 95.0 ppb (95) 72.3 ppb (71) N/A 23.0 ppb (22) N/A N/A N/A 0.63 ppb (7) N/A 11.0 μg/m3 (46) 95.0
 
Jan. 9, 2021, 8 p.m. 44.7 ppb (43) 28.8 ppb (28) N/A 16.0 ppb (16) N/A N/A N/A 0.47 ppb (6) N/A 6.0 μg/m3 (25) 43.0
 
Jan. 9, 2021, 7 p.m. 34.5 ppb (33) 22.1 ppb (21) N/A 12.0 ppb (12) N/A N/A N/A 0.37 ppb (5) N/A 0.0 μg/m3 (0) 33.0
 
Jan. 9, 2021, 6 p.m. 27.7 ppb (27) 14.7 ppb (14) N/A 13.0 ppb (13) N/A N/A N/A 0.35 ppb (4) N/A 1.0 μg/m3 (5) 27.0
 
Jan. 9, 2021, 5 p.m. 21.7 ppb (21) 10.2 ppb (10) N/A 12.0 ppb (12) N/A N/A N/A 0.25 ppb (3) N/A 3.0 μg/m3 (13) 21.0
 
Jan. 9, 2021, 4 p.m. 34.3 ppb (33) 17.4 ppb (17) N/A 17.0 ppb (17) N/A N/A N/A 0.27 ppb (4) N/A 5.0 μg/m3 (21) 33.0
 
Jan. 9, 2021, 3 p.m. 30.2 ppb (29) 15.9 ppb (15) N/A 14.0 ppb (14) N/A N/A N/A 0.27 ppb (4) N/A 4.0 μg/m3 (17) 29.0
 
Jan. 9, 2021, 2 p.m. 11.0 ppb (11) 2.4 ppb (3) N/A 9.0 ppb (9) N/A N/A N/A 0.12 ppb (2) N/A 5.0 μg/m3 (21) 21.0
 
Jan. 9, 2021, 1 p.m. 18.4 ppb (18) 5.3 ppb (5) N/A 13.0 ppb (13) N/A N/A N/A 0.19 ppb (3) N/A 6.0 μg/m3 (25) 25.0
 
Jan. 9, 2021, noon 12.7 ppb (12) 4.0 ppb (4) N/A 9.0 ppb (9) N/A N/A N/A 0.14 ppb (2) N/A 4.0 μg/m3 (17) 17.0
 
Jan. 9, 2021, 11 a.m. 11.1 ppb (11) 2.7 ppb (3) N/A 8.0 ppb (8) N/A N/A N/A 0.17 ppb (3) N/A 3.0 μg/m3 (13) 13.0
 
Jan. 9, 2021, 10 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