AQSQID: 530330030

Site Name: Seattle-10th & Weller

Location: Seattle, WA

Reporting: True, Located: True

Current AQI: 12.0

Seattle WA, US: 47.597222, -122.319722

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
July 19, 2019, 8 a.m. 3.9 ppb (4) 0.3 ppb (0) N/A 4.0 ppb (4) N/A N/A N/A 0.13 ppb (1) N/A 3.0 μg/m3 (12) 12.0
 
July 19, 2019, 7 a.m. 4.4 ppb (4) 0.7 ppb (1) N/A 4.0 ppb (4) N/A N/A N/A 0.16 ppb (2) N/A 5.0 μg/m3 (21) 21.0
 
July 19, 2019, 6 a.m. 4.7 ppb (4) 0.6 ppb (1) N/A 4.0 ppb (4) N/A N/A N/A 0.15 ppb (2) N/A 3.0 μg/m3 (12) 12.0
 
July 19, 2019, 5 a.m. 5.0 ppb (5) 0.9 ppb (1) N/A 4.0 ppb (4) N/A N/A N/A 0.17 ppb (2) N/A 2.0 μg/m3 (8) 8.0
 
July 19, 2019, 4 a.m. 5.7 ppb (5) 1.1 ppb (1) N/A 5.0 ppb (5) N/A N/A N/A 0.19 ppb (2) N/A 5.0 μg/m3 (21) 21.0
 
July 19, 2019, 3 a.m. 6.4 ppb (6) 0.9 ppb (1) N/A 6.0 ppb (6) N/A N/A N/A 0.22 ppb (2) N/A 2.0 μg/m3 (8) 8.0
 
July 19, 2019, 2 a.m. 10.6 ppb (10) 2.4 ppb (2) N/A 8.0 ppb (7) N/A N/A N/A 0.22 ppb (2) N/A 4.0 μg/m3 (17) 17.0
 
July 19, 2019, 1 a.m. 32.7 ppb (30) 12.0 ppb (11) N/A 21.0 ppb (19) N/A N/A N/A 0.38 ppb (4) N/A 5.0 μg/m3 (21) 30.0
 
July 19, 2019, midnight 17.1 ppb (16) 7.2 ppb (7) N/A 10.0 ppb (9) N/A N/A N/A 0.27 ppb (3) N/A 3.0 μg/m3 (12) 16.0
 
July 18, 2019, 11 p.m. 10.0 ppb (9) 4.0 ppb (4) N/A 6.0 ppb (6) N/A N/A N/A 0.2 ppb (2) N/A 4.0 μg/m3 (17) 17.0
 
July 18, 2019, 10 p.m. 33.1 ppb (31) 19.9 ppb (18) N/A 13.0 ppb (12) N/A N/A N/A 0.4 ppb (4) N/A 7.0 μg/m3 (29) 31.0
 
July 18, 2019, 9 p.m. 46.8 ppb (43) 28.4 ppb (26) N/A 18.0 ppb (17) N/A N/A N/A 0.46 ppb (5) N/A 8.0 μg/m3 (33) 43.0
 
July 18, 2019, 8 p.m. 54.6 ppb (51) 35.3 ppb (33) N/A 19.0 ppb (18) N/A N/A N/A 0.58 ppb (6) N/A 7.0 μg/m3 (29) 51.0
 
July 18, 2019, 7 p.m. 58.9 ppb (55) 38.2 ppb (35) N/A 21.0 ppb (19) N/A N/A N/A 0.42 ppb (5) N/A 5.0 μg/m3 (21) 55.0
 
July 18, 2019, 6 p.m. 14.6 ppb (14) 7.1 ppb (7) N/A 8.0 ppb (7) N/A N/A N/A 0.23 ppb (3) N/A 6.0 μg/m3 (25) 25.0
 
July 18, 2019, 5 p.m. 8.1 ppb (8) 3.4 ppb (3) N/A 5.0 ppb (5) N/A N/A N/A 0.17 ppb (2) N/A 3.0 μg/m3 (12) 12.0
 
July 18, 2019, 4 p.m. 9.4 ppb (9) 4.5 ppb (4) N/A 5.0 ppb (5) N/A N/A N/A 0.18 ppb (2) N/A 2.0 μg/m3 (8) 9.0
 
July 18, 2019, 3 p.m. 12.5 ppb (12) 5.0 ppb (5) N/A 7.0 ppb (6) N/A N/A N/A 0.18 ppb (2) N/A 2.0 μg/m3 (8) 12.0
 
July 18, 2019, 2 p.m. 16.1 ppb (15) 4.1 ppb (4) N/A 12.0 ppb (11) N/A N/A N/A 0.22 ppb (2) N/A 4.0 μg/m3 (17) 17.0
 
July 18, 2019, 1 p.m. 15.0 ppb (14) 6.1 ppb (6) N/A 9.0 ppb (8) N/A N/A N/A 0.24 ppb (3) N/A 2.0 μg/m3 (8) 14.0
 
July 18, 2019, noon 3.2 ppb (3) 0.7 ppb (1) N/A 3.0 ppb (3) N/A N/A N/A 0.11 ppb (1) N/A 4.0 μg/m3 (17) 17.0
 
July 18, 2019, 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
 
July 18, 2019, 10 a.m. 3.6 ppb (3) 1.1 ppb (1) N/A 3.0 ppb (3) N/A N/A N/A 0.1 ppb (1) N/A 2.0 μg/m3 (8) 8.0
 
July 18, 2019, 9 a.m. 3.5 ppb (3) 0.3 ppb (0) N/A 3.0 ppb (3) N/A N/A N/A 0.1 ppb (1) N/A 0.0 μg/m3 (0) 3.0
 
July 18, 2019, 8 a.m. 2.9 ppb (3) 0.3 ppb (0) N/A 3.0 ppb (3) N/A N/A N/A 0.1 ppb (1) N/A 0.0 μg/m3 (0) 3.0
 
July 18, 2019, 7 a.m. 2.7 ppb (3) 0.7 ppb (1) N/A 2.0 ppb (2) N/A N/A N/A 0.11 ppb (1) N/A 0.0 μg/m3 (0) 3.0
 
July 18, 2019, 6 a.m. 4.4 ppb (4) 1.0 ppb (1) N/A 3.0 ppb (3) N/A N/A N/A 0.14 ppb (2) N/A 4.0 μg/m3 (17) 17.0
 
July 18, 2019, 5 a.m. 27.3 ppb (25) 16.8 ppb (16) N/A 10.0 ppb (9) N/A N/A N/A 0.34 ppb (4) N/A 4.0 μg/m3 (17) 25.0
 
July 18, 2019, 4 a.m. 26.4 ppb (24) 16.8 ppb (16) N/A 10.0 ppb (9) N/A N/A N/A 0.36 ppb (4) N/A 0.0 μg/m3 (0) 24.0
 
July 18, 2019, 3 a.m. 20.3 ppb (19) 13.0 ppb (12) N/A 7.0 ppb (6) N/A N/A N/A 0.34 ppb (4) N/A 3.0 μg/m3 (12) 19.0
 
July 18, 2019, 2 a.m. 25.4 ppb (24) 16.1 ppb (15) N/A 9.0 ppb (8) N/A N/A N/A 0.35 ppb (4) N/A 6.0 μg/m3 (25) 25.0
 
July 18, 2019, 1 a.m. 30.8 ppb (29) 21.3 ppb (20) N/A 10.0 ppb (9) N/A N/A N/A 0.33 ppb (4) N/A 3.0 μg/m3 (12) 29.0
 
July 18, 2019, midnight 24.0 ppb (22) 16.6 ppb (15) N/A 7.0 ppb (6) N/A N/A N/A 0.37 ppb (4) N/A 0.0 μg/m3 (0) 22.0
 
July 17, 2019, 11 p.m. 28.5 ppb (26) 18.1 ppb (17) N/A 10.0 ppb (9) N/A N/A N/A 0.35 ppb (4) N/A 1.0 μg/m3 (4) 26.0
 
July 17, 2019, 10 p.m. 37.0 ppb (34) 23.7 ppb (22) N/A 13.0 ppb (12) N/A N/A N/A 0.38 ppb (4) N/A 1.0 μg/m3 (4) 34.0
 
July 17, 2019, 9 p.m. 39.2 ppb (36) 23.5 ppb (22) N/A 16.0 ppb (15) N/A N/A N/A 0.32 ppb (4) N/A 3.0 μg/m3 (12) 36.0
 
July 17, 2019, 8 p.m. 29.2 ppb (27) 18.2 ppb (17) N/A 11.0 ppb (10) N/A N/A N/A 0.37 ppb (4) N/A 6.0 μg/m3 (25) 27.0
 
July 17, 2019, 7 p.m. 29.8 ppb (28) 19.5 ppb (18) N/A 10.0 ppb (9) N/A N/A N/A 0.3 ppb (3) N/A 1.0 μg/m3 (4) 28.0
 
July 17, 2019, 6 p.m. 43.4 ppb (40) 29.7 ppb (28) N/A 14.0 ppb (13) N/A N/A N/A 0.37 ppb (4) N/A 6.0 μg/m3 (25) 40.0
 
July 17, 2019, 5 p.m. 40.3 ppb (37) 24.8 ppb (23) N/A 16.0 ppb (15) N/A N/A N/A 0.33 ppb (4) N/A 7.0 μg/m3 (29) 37.0
 
July 17, 2019, 4 p.m. 38.6 ppb (36) 19.0 ppb (18) N/A 20.0 ppb (19) N/A N/A N/A 0.33 ppb (4) N/A 3.0 μg/m3 (12) 36.0
 
July 17, 2019, 3 p.m. 39.6 ppb (37) 22.7 ppb (21) N/A 17.0 ppb (16) N/A N/A N/A 0.32 ppb (4) N/A 3.0 μg/m3 (12) 37.0
 
July 17, 2019, 2 p.m. 46.7 ppb (43) 28.1 ppb (26) N/A 19.0 ppb (18) N/A N/A N/A 0.35 ppb (4) N/A 4.0 μg/m3 (17) 43.0
 
July 17, 2019, 1 p.m. 62.3 ppb (59) 36.8 ppb (34) N/A 25.0 ppb (23) N/A N/A N/A 0.4 ppb (4) N/A 6.0 μg/m3 (25) 59.0
 
July 17, 2019, noon 33.0 ppb (31) 18.1 ppb (17) N/A 15.0 ppb (14) N/A N/A N/A 0.32 ppb (4) N/A 3.0 μg/m3 (12) 31.0
 
July 17, 2019, 11 a.m. 19.8 ppb (18) 9.1 ppb (8) N/A 11.0 ppb (10) N/A N/A N/A 0.21 ppb (2) N/A 1.0 μg/m3 (4) 18.0
 
July 17, 2019, 10 a.m. 12.4 ppb (11) 4.1 ppb (4) N/A 8.0 ppb (7) N/A N/A N/A 0.12 ppb (1) N/A 2.0 μg/m3 (8) 11.0
 
July 17, 2019, 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 (12) 12.0
 
July 17, 2019, 8 a.m. 12.2 ppb (11) 4.4 ppb (4) N/A 8.0 ppb (7) N/A N/A N/A 0.15 ppb (2) N/A 3.0 μg/m3 (12) 12.0
 
July 17, 2019, 7 a.m. 13.1 ppb (12) 5.3 ppb (5) N/A 8.0 ppb (7) N/A N/A N/A 0.15 ppb (2) N/A 2.0 μg/m3 (8) 12.0
 
July 17, 2019, 6 a.m. 24.0 ppb (22) 11.0 ppb (10) N/A 13.0 ppb (12) N/A N/A N/A 0.27 ppb (3) N/A 5.0 μg/m3 (21) 22.0
 
July 17, 2019, 5 a.m. 51.9 ppb (48) 25.6 ppb (24) N/A 26.0 ppb (24) N/A N/A N/A 0.46 ppb (5) N/A 5.0 μg/m3 (21) 48.0
 
July 17, 2019, 4 a.m. 45.5 ppb (42) 20.8 ppb (19) N/A 25.0 ppb (23) N/A N/A N/A 0.44 ppb (5) N/A 5.0 μg/m3 (21) 42.0
 
July 17, 2019, 3 a.m. 48.7 ppb (45) 24.5 ppb (23) N/A 24.0 ppb (22) N/A N/A N/A 0.52 ppb (6) N/A 3.0 μg/m3 (12) 45.0
 
July 17, 2019, 2 a.m. 44.5 ppb (41) 22.6 ppb (21) N/A 22.0 ppb (20) N/A N/A N/A 0.61 ppb (7) N/A 4.0 μg/m3 (17) 41.0
 
July 17, 2019, 1 a.m. 35.8 ppb (33) 17.8 ppb (16) N/A 18.0 ppb (17) N/A N/A N/A 0.44 ppb (5) N/A 2.0 μg/m3 (8) 33.0
 
July 17, 2019, midnight 37.1 ppb (34) 20.2 ppb (19) N/A 17.0 ppb (16) N/A N/A N/A 0.38 ppb (4) N/A 3.0 μg/m3 (12) 34.0
 
July 16, 2019, 11 p.m. 30.3 ppb (28) 17.4 ppb (16) N/A 13.0 ppb (12) N/A N/A N/A 0.39 ppb (4) N/A 6.0 μg/m3 (25) 28.0
 
July 16, 2019, 10 p.m. 46.0 ppb (43) 29.0 ppb (27) N/A 17.0 ppb (16) N/A N/A N/A 0.49 ppb (5) N/A 7.0 μg/m3 (29) 43.0
 
July 16, 2019, 9 p.m. 48.0 ppb (44) 32.6 ppb (30) N/A 15.0 ppb (14) N/A N/A N/A 0.49 ppb (5) N/A 7.0 μg/m3 (29) 44.0
 
July 16, 2019, 8 p.m. 140.6 ppb (108) 106.3 ppb (101) N/A 35.0 ppb (32) N/A N/A N/A 0.46 ppb (5) N/A 10.0 μg/m3 (42) 108.0
 
July 16, 2019, 7 p.m. 73.5 ppb (71) 55.1 ppb (51) N/A 18.0 ppb (17) N/A N/A N/A 0.45 ppb (5) N/A 13.0 μg/m3 (52) 71.0
 
July 16, 2019, 6 p.m. 80.3 ppb (78) 60.0 ppb (56) N/A 20.0 ppb (19) N/A N/A N/A 0.48 ppb (5) N/A 13.0 μg/m3 (52) 78.0
 
July 16, 2019, 5 p.m. 94.2 ppb (93) 75.5 ppb (73) N/A 19.0 ppb (18) N/A N/A N/A 0.43 ppb (5) N/A 11.0 μg/m3 (46) 93.0
 
July 16, 2019, 4 p.m. 136.0 ppb (107) 111.5 ppb (102) N/A 24.0 ppb (22) N/A N/A N/A 0.44 ppb (5) N/A 10.0 μg/m3 (42) 107.0
 
July 16, 2019, 3 p.m. 134.5 ppb (106) 105.0 ppb (101) N/A 30.0 ppb (28) N/A N/A N/A 0.46 ppb (5) N/A 14.0 μg/m3 (54) 106.0
 
July 16, 2019, 2 p.m. 128.6 ppb (105) 95.3 ppb (94) N/A 33.0 ppb (31) N/A N/A N/A 0.51 ppb (6) N/A 10.0 μg/m3 (42) 105.0
 
July 16, 2019, 1 p.m. 104.9 ppb (101) 79.4 ppb (77) N/A 25.0 ppb (23) N/A N/A N/A 0.55 ppb (6) N/A 10.0 μg/m3 (42) 101.0
 
July 16, 2019, noon 97.4 ppb (96) 69.8 ppb (67) N/A 28.0 ppb (26) N/A N/A N/A 0.66 ppb (7) N/A 10.0 μg/m3 (42) 96.0
 
July 16, 2019, 11 a.m. 81.6 ppb (79) 56.0 ppb (52) N/A 26.0 ppb (24) N/A N/A N/A 0.4 ppb (4) N/A 4.0 μg/m3 (17) 79.0
 
July 16, 2019, 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
 
July 16, 2019, 9 a.m. 51.3 ppb (48) 26.9 ppb (25) N/A 24.0 ppb (22) N/A N/A N/A 0.26 ppb (3) N/A 5.0 μg/m3 (21) 48.0
 
July 16, 2019, 8 a.m. 49.2 ppb (46) 21.5 ppb (20) N/A 28.0 ppb (26) N/A N/A N/A 0.26 ppb (3) N/A 5.0 μg/m3 (21) 46.0
 
July 16, 2019, 7 a.m. 37.7 ppb (35) 12.1 ppb (11) N/A 26.0 ppb (24) N/A N/A N/A 0.22 ppb (2) N/A 9.0 μg/m3 (38) 38.0
 
July 16, 2019, 6 a.m. 49.4 ppb (46) 21.6 ppb (20) N/A 28.0 ppb (26) N/A N/A N/A 0.41 ppb (5) N/A 5.0 μg/m3 (21) 46.0
 
July 16, 2019, 5 a.m. 37.1 ppb (34) 16.2 ppb (15) N/A 21.0 ppb (19) N/A N/A N/A 0.42 ppb (5) N/A 4.0 μg/m3 (17) 34.0
 
July 16, 2019, 4 a.m. 35.3 ppb (33) 17.2 ppb (16) N/A 18.0 ppb (17) N/A N/A N/A 0.44 ppb (5) N/A 3.0 μg/m3 (12) 33.0
 
July 16, 2019, 3 a.m. 38.5 ppb (36) 19.3 ppb (18) N/A 19.0 ppb (18) N/A N/A N/A 0.48 ppb (5) N/A 3.0 μg/m3 (12) 36.0
 
July 16, 2019, 2 a.m. 43.8 ppb (41) 22.4 ppb (21) N/A 21.0 ppb (19) N/A N/A N/A 0.56 ppb (6) N/A 2.0 μg/m3 (8) 41.0
 
July 16, 2019, 1 a.m. 45.9 ppb (42) 23.5 ppb (22) N/A 22.0 ppb (20) N/A N/A N/A 0.59 ppb (7) N/A 3.0 μg/m3 (12) 42.0
 
July 16, 2019, midnight 35.0 ppb (32) 16.9 ppb (16) N/A 18.0 ppb (17) N/A N/A N/A 0.42 ppb (5) N/A 5.0 μg/m3 (21) 32.0
 
July 15, 2019, 11 p.m. 26.9 ppb (25) 14.5 ppb (13) N/A 12.0 ppb (11) N/A N/A N/A 0.34 ppb (4) N/A 5.0 μg/m3 (21) 25.0
 
July 15, 2019, 10 p.m. 47.6 ppb (44) 26.3 ppb (24) N/A 21.0 ppb (19) N/A N/A N/A 0.52 ppb (6) N/A 5.0 μg/m3 (21) 44.0
 
July 15, 2019, 9 p.m. 46.0 ppb (43) 30.2 ppb (28) N/A 16.0 ppb (15) N/A N/A N/A 0.47 ppb (5) N/A 5.0 μg/m3 (21) 43.0
 
July 15, 2019, 8 p.m. 58.0 ppb (54) 36.1 ppb (33) N/A 22.0 ppb (20) N/A N/A N/A 0.51 ppb (6) N/A 6.0 μg/m3 (25) 54.0
 
July 15, 2019, 7 p.m. 74.0 ppb (71) 52.1 ppb (48) N/A 22.0 ppb (20) N/A N/A N/A 0.56 ppb (6) N/A 9.0 μg/m3 (38) 71.0
 
July 15, 2019, 6 p.m. 52.1 ppb (48) 34.8 ppb (32) N/A 17.0 ppb (16) N/A N/A N/A 0.43 ppb (5) N/A 6.0 μg/m3 (25) 48.0
 
July 15, 2019, 5 p.m. 36.7 ppb (34) 20.6 ppb (19) N/A 16.0 ppb (15) N/A N/A N/A 0.27 ppb (3) N/A 5.0 μg/m3 (21) 34.0
 
July 15, 2019, 4 p.m. 55.0 ppb (51) 33.1 ppb (31) N/A 22.0 ppb (20) N/A N/A N/A 0.3 ppb (3) N/A 9.0 μg/m3 (38) 51.0
 
July 15, 2019, 3 p.m. 107.0 ppb (101) 77.5 ppb (75) N/A 29.0 ppb (27) N/A N/A N/A 0.47 ppb (5) N/A 11.0 μg/m3 (46) 101.0
 
July 15, 2019, 2 p.m. 118.7 ppb (103) 89.2 ppb (87) N/A 30.0 ppb (28) N/A N/A N/A 0.47 ppb (5) N/A 12.0 μg/m3 (50) 103.0
 
July 15, 2019, 1 p.m. 49.0 ppb (45) 33.7 ppb (31) N/A 15.0 ppb (14) N/A N/A N/A 0.35 ppb (4) N/A 3.0 μg/m3 (12) 45.0
 
July 15, 2019, noon 18.5 ppb (17) 7.8 ppb (7) N/A 11.0 ppb (10) N/A N/A N/A 0.17 ppb (2) N/A 3.0 μg/m3 (12) 17.0
 
July 15, 2019, 11 a.m. 29.2 ppb (27) 15.8 ppb (15) N/A 13.0 ppb (12) N/A N/A N/A 0.29 ppb (3) N/A 2.0 μg/m3 (8) 27.0
 
July 15, 2019, 10 a.m. 3.7 ppb (3) 0.1 ppb (0) N/A 4.0 ppb (4) N/A N/A N/A 0.09 ppb (1) N/A 3.0 μg/m3 (12) 12.0
 
July 15, 2019, 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 (12) 12.0
 
July 15, 2019, 8 a.m. 4.6 ppb (4) 0.2 ppb (0) N/A 4.0 ppb (4) N/A N/A N/A 0.11 ppb (1) N/A 3.0 μg/m3 (12) 12.0
 
July 15, 2019, 7 a.m. 6.1 ppb (6) 0.7 ppb (1) N/A 5.0 ppb (5) N/A N/A N/A 0.12 ppb (1) N/A 3.0 μg/m3 (12) 12.0
 
July 15, 2019, 6 a.m. 6.5 ppb (6) 0.5 ppb (0) N/A 6.0 ppb (6) N/A N/A N/A 0.15 ppb (2) N/A 2.0 μg/m3 (8) 8.0
 
July 15, 2019, 5 a.m. 14.1 ppb (13) 2.7 ppb (3) N/A 11.0 ppb (10) N/A N/A N/A 0.25 ppb (3) N/A 5.0 μg/m3 (21) 21.0
 
July 15, 2019, 4 a.m. 14.8 ppb (14) 1.8 ppb (2) N/A 13.0 ppb (12) N/A N/A N/A 0.25 ppb (3) N/A 6.0 μg/m3 (25) 25.0
 
July 15, 2019, 3 a.m. 21.2 ppb (20) 5.7 ppb (5) N/A 16.0 ppb (15) N/A N/A N/A 0.47 ppb (5) N/A 6.0 μg/m3 (25) 25.0
 
July 15, 2019, 2 a.m. 19.2 ppb (18) 6.9 ppb (6) N/A 12.0 ppb (11) N/A N/A N/A 0.45 ppb (5) N/A 5.0 μg/m3 (21) 21.0
 
July 15, 2019, 1 a.m. 21.2 ppb (20) 8.1 ppb (8) N/A 13.0 ppb (12) N/A N/A N/A 0.41 ppb (5) N/A 5.0 μg/m3 (21) 21.0
 
July 15, 2019, midnight 43.3 ppb (40) 21.3 ppb (20) N/A 22.0 ppb (20) N/A N/A N/A 0.45 ppb (5) N/A 4.0 μg/m3 (17) 40.0
 
July 14, 2019, 11 p.m. 30.9 ppb (29) 13.8 ppb (13) N/A 17.0 ppb (16) N/A N/A N/A 0.41 ppb (5) N/A 6.0 μg/m3 (25) 29.0
 
July 14, 2019, 10 p.m. 35.8 ppb (33) 15.9 ppb (15) N/A 20.0 ppb (19) N/A N/A N/A 0.33 ppb (4) N/A 9.0 μg/m3 (38) 38.0
 
July 14, 2019, 9 p.m. 28.6 ppb (26) 14.3 ppb (13) N/A 14.0 ppb (13) N/A N/A N/A 0.43 ppb (5) N/A 8.0 μg/m3 (33) 33.0
 
July 14, 2019, 8 p.m. 27.9 ppb (26) 15.3 ppb (14) N/A 13.0 ppb (12) N/A N/A N/A 0.36 ppb (4) N/A 6.0 μg/m3 (25) 26.0
 
July 14, 2019, 7 p.m. 26.9 ppb (25) 16.2 ppb (15) N/A 11.0 ppb (10) N/A N/A N/A 0.34 ppb (4) N/A 10.0 μg/m3 (42) 42.0
 
July 14, 2019, 6 p.m. 35.0 ppb (32) 22.3 ppb (21) N/A 13.0 ppb (12) N/A N/A N/A 0.42 ppb (5) N/A 8.0 μg/m3 (33) 33.0
 
July 14, 2019, 5 p.m. 29.9 ppb (28) 19.7 ppb (18) N/A 10.0 ppb (9) N/A N/A N/A 0.41 ppb (5) N/A 6.0 μg/m3 (25) 28.0
 
July 14, 2019, 4 p.m. 51.5 ppb (48) 36.2 ppb (34) N/A 15.0 ppb (14) N/A N/A N/A 0.42 ppb (5) N/A 4.0 μg/m3 (17) 48.0
 
July 14, 2019, 3 p.m. 42.3 ppb (39) 28.1 ppb (26) N/A 14.0 ppb (13) N/A N/A N/A 0.35 ppb (4) N/A 3.0 μg/m3 (12) 39.0
 
July 14, 2019, 2 p.m. 33.6 ppb (31) 21.4 ppb (20) N/A 12.0 ppb (11) N/A N/A N/A 0.36 ppb (4) N/A 4.0 μg/m3 (17) 31.0
 
July 14, 2019, 1 p.m. 94.6 ppb (93) 73.5 ppb (71) N/A 21.0 ppb (19) N/A N/A N/A 0.39 ppb (4) N/A 6.0 μg/m3 (25) 93.0
 
July 14, 2019, noon 29.1 ppb (27) 17.2 ppb (16) N/A 12.0 ppb (11) N/A N/A N/A 0.27 ppb (3) N/A 4.0 μg/m3 (17) 27.0
 
July 14, 2019, 11 a.m. 4.7 ppb (4) 0.6 ppb (1) N/A 4.0 ppb (4) N/A N/A N/A 0.13 ppb (1) N/A 2.0 μg/m3 (8) 8.0
 
July 14, 2019, 10 a.m. 2.8 ppb (3) 0.3 ppb (0) N/A 2.0 ppb (2) N/A N/A N/A 0.13 ppb (1) N/A 2.0 μg/m3 (8) 8.0
 
July 14, 2019, 9 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
 
July 14, 2019, 8 a.m. 3.5 ppb (3) 0.3 ppb (0) N/A 3.0 ppb (3) N/A N/A N/A 0.12 ppb (1) N/A 3.0 μg/m3 (12) 12.0
 
July 14, 2019, 7 a.m. 4.9 ppb (5) 0.5 ppb (0) N/A 4.0 ppb (4) N/A N/A N/A 0.15 ppb (2) N/A 3.0 μg/m3 (12) 12.0
 
July 14, 2019, 6 a.m. 5.9 ppb (5) 1.0 ppb (1) N/A 5.0 ppb (5) N/A N/A N/A 0.16 ppb (2) N/A 4.0 μg/m3 (17) 17.0
 
July 14, 2019, 5 a.m. 7.2 ppb (7) 1.0 ppb (1) N/A 6.0 ppb (6) N/A N/A N/A 0.18 ppb (2) N/A 5.0 μg/m3 (21) 21.0
 
July 14, 2019, 4 a.m. 7.1 ppb (7) 0.9 ppb (1) N/A 6.0 ppb (6) N/A N/A N/A 0.18 ppb (2) N/A 5.0 μg/m3 (21) 21.0
 
July 14, 2019, 3 a.m. 8.4 ppb (8) 2.2 ppb (2) N/A 6.0 ppb (6) N/A N/A N/A 0.23 ppb (3) N/A 3.0 μg/m3 (12) 12.0
 
July 14, 2019, 2 a.m. 11.5 ppb (11) 3.4 ppb (3) N/A 8.0 ppb (7) N/A N/A N/A 0.23 ppb (3) N/A 6.0 μg/m3 (25) 25.0
 
July 14, 2019, 1 a.m. 34.3 ppb (32) 18.8 ppb (17) N/A 15.0 ppb (14) N/A N/A N/A 0.44 ppb (5) N/A 6.0 μg/m3 (25) 32.0
 
July 14, 2019, midnight 30.3 ppb (28) 17.0 ppb (16) N/A 13.0 ppb (12) N/A N/A N/A 0.45 ppb (5) N/A 6.0 μg/m3 (25) 28.0
 
July 13, 2019, 11 p.m. 26.5 ppb (25) 14.1 ppb (13) N/A 12.0 ppb (11) N/A N/A N/A 0.39 ppb (4) N/A 4.0 μg/m3 (17) 25.0
 
July 13, 2019, 10 p.m. 21.0 ppb (19) 11.6 ppb (11) N/A 9.0 ppb (8) N/A N/A N/A 0.34 ppb (4) N/A 1.0 μg/m3 (4) 19.0
 
July 13, 2019, 9 p.m. 20.7 ppb (19) 12.2 ppb (11) N/A 9.0 ppb (8) N/A N/A N/A 0.3 ppb (3) N/A 3.0 μg/m3 (12) 19.0
 
July 13, 2019, 8 p.m. 27.7 ppb (26) 16.5 ppb (15) N/A 11.0 ppb (10) N/A N/A N/A 0.31 ppb (3) N/A 5.0 μg/m3 (21) 26.0
 
July 13, 2019, 7 p.m. 35.9 ppb (33) 23.1 ppb (21) N/A 13.0 ppb (12) N/A N/A N/A 0.36 ppb (4) N/A 8.0 μg/m3 (33) 33.0
 
July 13, 2019, 6 p.m. 47.1 ppb (44) 32.3 ppb (30) N/A 15.0 ppb (14) N/A N/A N/A 0.35 ppb (4) N/A 9.0 μg/m3 (38) 44.0
 
July 13, 2019, 5 p.m. 55.4 ppb (51) 38.8 ppb (36) N/A 17.0 ppb (16) N/A N/A N/A 0.4 ppb (4) N/A 9.0 μg/m3 (38) 51.0
 
July 13, 2019, 4 p.m. 82.3 ppb (80) 61.6 ppb (58) N/A 21.0 ppb (19) N/A N/A N/A 0.49 ppb (5) N/A 9.0 μg/m3 (38) 80.0
 
July 13, 2019, 3 p.m. 98.6 ppb (97) 79.5 ppb (77) N/A 19.0 ppb (18) N/A N/A N/A 0.56 ppb (6) N/A 9.0 μg/m3 (38) 97.0
 
July 13, 2019, 2 p.m. 100.9 ppb (100) 77.1 ppb (75) N/A 24.0 ppb (22) N/A N/A N/A 0.53 ppb (6) N/A 7.0 μg/m3 (29) 100.0
 
July 13, 2019, 1 p.m. 9.0 ppb (8) 3.3 ppb (3) N/A 6.0 ppb (6) N/A N/A N/A 0.15 ppb (2) N/A 3.0 μg/m3 (12) 12.0
 
July 13, 2019, noon 4.9 ppb (5) 0.3 ppb (0) N/A 5.0 ppb (5) N/A N/A N/A 0.12 ppb (1) N/A 2.0 μg/m3 (8) 8.0
 
July 13, 2019, 11 a.m. 6.1 ppb (6) 0.8 ppb (1) N/A 5.0 ppb (5) N/A N/A N/A 0.1 ppb (1) N/A -2.0 μg/m3 (0) 6.0
 
July 13, 2019, 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 (4) 4.0
 
July 13, 2019, 9 a.m. 5.0 ppb (5) 0.3 ppb (0) N/A 5.0 ppb (5) N/A N/A N/A 0.12 ppb (1) N/A 3.0 μg/m3 (12) 12.0
 
July 13, 2019, 8 a.m. 5.9 ppb (5) 0.4 ppb (0) N/A 6.0 ppb (6) N/A N/A N/A 0.13 ppb (1) N/A 2.0 μg/m3 (8) 8.0
 
July 13, 2019, 7 a.m. 6.5 ppb (6) 0.6 ppb (1) N/A 6.0 ppb (6) N/A N/A N/A 0.14 ppb (2) N/A 4.0 μg/m3 (17) 17.0
 
July 13, 2019, 6 a.m. 7.6 ppb (7) 1.3 ppb (1) N/A 6.0 ppb (6) N/A N/A N/A 0.18 ppb (2) N/A 3.0 μg/m3 (12) 12.0
 
July 13, 2019, 5 a.m. 10.3 ppb (10) 1.8 ppb (2) N/A 9.0 ppb (8) N/A N/A N/A 0.22 ppb (2) N/A 1.0 μg/m3 (4) 10.0
 
July 13, 2019, 4 a.m. 10.5 ppb (10) 2.0 ppb (2) N/A 9.0 ppb (8) N/A N/A N/A 0.22 ppb (2) N/A 3.0 μg/m3 (12) 12.0
 
July 13, 2019, 3 a.m. 33.7 ppb (31) 17.0 ppb (16) N/A 17.0 ppb (16) N/A N/A N/A 0.48 ppb (5) N/A 4.0 μg/m3 (17) 31.0
 
July 13, 2019, 2 a.m. 28.6 ppb (26) 15.7 ppb (15) N/A 13.0 ppb (12) N/A N/A N/A 0.49 ppb (5) N/A 4.0 μg/m3 (17) 26.0
 
July 13, 2019, 1 a.m. 66.7 ppb (64) 41.1 ppb (38) N/A 26.0 ppb (24) N/A N/A N/A 0.47 ppb (5) N/A 8.0 μg/m3 (33) 64.0
 
July 13, 2019, midnight 66.3 ppb (63) 41.5 ppb (38) N/A 25.0 ppb (23) N/A N/A N/A 0.48 ppb (5) N/A 8.0 μg/m3 (33) 63.0
 
July 12, 2019, 11 p.m. 52.4 ppb (49) 34.2 ppb (32) N/A 18.0 ppb (17) N/A N/A N/A 0.39 ppb (4) N/A 6.0 μg/m3 (25) 49.0
 
July 12, 2019, 10 p.m. 47.5 ppb (44) 32.8 ppb (30) N/A 15.0 ppb (14) N/A N/A N/A 0.49 ppb (5) N/A 3.0 μg/m3 (12) 44.0
 
July 12, 2019, 9 p.m. 44.2 ppb (41) 30.6 ppb (28) N/A 14.0 ppb (13) N/A N/A N/A 0.51 ppb (6) N/A 6.0 μg/m3 (25) 41.0
 
July 12, 2019, 8 p.m. 57.9 ppb (54) 41.3 ppb (38) N/A 17.0 ppb (16) N/A N/A N/A 0.43 ppb (5) N/A 9.0 μg/m3 (38) 54.0
 
July 12, 2019, 7 p.m. 75.4 ppb (73) 57.9 ppb (54) N/A 18.0 ppb (17) N/A N/A N/A 0.47 ppb (5) N/A 11.0 μg/m3 (46) 73.0
 
July 12, 2019, 6 p.m. 84.3 ppb (82) 64.7 ppb (61) N/A 20.0 ppb (19) N/A N/A N/A 0.47 ppb (5) N/A 13.0 μg/m3 (52) 82.0
 
July 12, 2019, 5 p.m. 93.8 ppb (92) 74.3 ppb (72) N/A 19.0 ppb (18) N/A N/A N/A 0.41 ppb (5) N/A 10.0 μg/m3 (42) 92.0
 
July 12, 2019, 4 p.m. 104.3 ppb (101) 81.2 ppb (79) N/A 23.0 ppb (21) N/A N/A N/A 0.38 ppb (4) N/A 9.0 μg/m3 (38) 101.0
 
July 12, 2019, 3 p.m. 107.4 ppb (101) 88.2 ppb (86) N/A 19.0 ppb (18) N/A N/A N/A 0.38 ppb (4) N/A 10.0 μg/m3 (42) 101.0
 
July 12, 2019, 2 p.m. 15.2 ppb (14) 6.8 ppb (6) N/A 8.0 ppb (7) N/A N/A N/A 0.16 ppb (2) N/A 6.0 μg/m3 (25) 25.0
 
July 12, 2019, 1 p.m. 12.2 ppb (11) 4.4 ppb (4) N/A 8.0 ppb (7) N/A N/A N/A 0.15 ppb (2) N/A 10.0 μg/m3 (42) 42.0
 
July 12, 2019, noon 13.6 ppb (13) 5.8 ppb (5) N/A 8.0 ppb (7) N/A N/A N/A 0.18 ppb (2) N/A 6.0 μg/m3 (25) 25.0
 
July 12, 2019, 11 a.m. 77.8 ppb (75) 54.0 ppb (50) N/A 24.0 ppb (22) N/A N/A N/A 0.41 ppb (5) N/A 7.0 μg/m3 (29) 75.0
 
July 12, 2019, 10 a.m. 99.7 ppb (99) 75.7 ppb (73) N/A 24.0 ppb (22) N/A N/A N/A 0.38 ppb (4) N/A 11.0 μg/m3 (46) 99.0
 
July 12, 2019, 9 a.m. 101.8 ppb (100) 75.6 ppb (73) N/A 26.0 ppb (24) N/A N/A N/A 0.44 ppb (5) N/A 7.0 μg/m3 (29) 100.0