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
Sept. 15, 2019, 6 a.m. 9.8 ppb (9) 1.3 ppb (1) N/A 9.0 ppb (8) N/A N/A N/A 0.24 ppb (3) N/A 3.0 μg/m3 (12) 12.0
 
Sept. 15, 2019, 5 a.m. 13.5 ppb (12) 3.4 ppb (3) N/A 10.0 ppb (9) N/A N/A N/A 0.29 ppb (3) N/A 6.0 μg/m3 (25) 25.0
 
Sept. 15, 2019, 4 a.m. 32.0 ppb (30) 12.6 ppb (12) N/A 19.0 ppb (18) N/A N/A N/A 0.44 ppb (5) N/A 6.0 μg/m3 (25) 30.0
 
Sept. 15, 2019, 3 a.m. 33.7 ppb (31) 14.4 ppb (13) N/A 19.0 ppb (18) N/A N/A N/A 0.46 ppb (5) N/A 3.0 μg/m3 (12) 31.0
 
Sept. 15, 2019, 2 a.m. 23.9 ppb (22) 9.7 ppb (9) N/A 14.0 ppb (13) N/A N/A N/A 0.36 ppb (4) N/A 2.0 μg/m3 (8) 22.0
 
Sept. 15, 2019, 1 a.m. 29.0 ppb (27) 13.1 ppb (12) N/A 16.0 ppb (15) N/A N/A N/A 0.45 ppb (5) N/A 3.0 μg/m3 (12) 27.0
 
Sept. 15, 2019, midnight 22.7 ppb (21) 10.3 ppb (10) 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
 
Sept. 14, 2019, 11 p.m. 20.3 ppb (19) 9.7 ppb (9) N/A 11.0 ppb (10) N/A N/A N/A 0.39 ppb (4) N/A 3.0 μg/m3 (12) 19.0
 
Sept. 14, 2019, 10 p.m. 19.7 ppb (18) 9.1 ppb (8) N/A 11.0 ppb (10) N/A N/A N/A 0.35 ppb (4) N/A 4.0 μg/m3 (17) 18.0
 
Sept. 14, 2019, 9 p.m. 20.8 ppb (19) 10.8 ppb (10) N/A 10.0 ppb (9) N/A N/A N/A 0.37 ppb (4) N/A 3.0 μg/m3 (12) 19.0
 
Sept. 14, 2019, 8 p.m. 20.6 ppb (19) 10.2 ppb (9) N/A 10.0 ppb (9) N/A N/A N/A 0.31 ppb (3) N/A 1.0 μg/m3 (4) 19.0
 
Sept. 14, 2019, 7 p.m. 22.0 ppb (20) 9.7 ppb (9) N/A 12.0 ppb (11) N/A N/A N/A 0.34 ppb (4) N/A 4.0 μg/m3 (17) 20.0
 
Sept. 14, 2019, 6 p.m. 24.5 ppb (23) 13.0 ppb (12) N/A 11.0 ppb (10) N/A N/A N/A 0.37 ppb (4) N/A 5.0 μg/m3 (21) 23.0
 
Sept. 14, 2019, 5 p.m. 28.0 ppb (26) 14.4 ppb (13) N/A 14.0 ppb (13) N/A N/A N/A 0.4 ppb (4) N/A 3.0 μg/m3 (12) 26.0
 
Sept. 14, 2019, 4 p.m. 28.1 ppb (26) 14.3 ppb (13) N/A 14.0 ppb (13) N/A N/A N/A 0.39 ppb (4) N/A 2.0 μg/m3 (8) 26.0
 
Sept. 14, 2019, 3 p.m. 29.4 ppb (27) 15.5 ppb (14) N/A 14.0 ppb (13) N/A N/A N/A 0.39 ppb (4) N/A 3.0 μg/m3 (12) 27.0
 
Sept. 14, 2019, 2 p.m. 29.5 ppb (27) 15.9 ppb (15) N/A 14.0 ppb (13) N/A N/A N/A 0.37 ppb (4) N/A 3.0 μg/m3 (12) 27.0
 
Sept. 14, 2019, 1 p.m. 21.5 ppb (20) 10.0 ppb (9) N/A 12.0 ppb (11) N/A N/A N/A 0.28 ppb (3) N/A 2.0 μg/m3 (8) 20.0
 
Sept. 14, 2019, noon 16.2 ppb (15) 5.8 ppb (5) N/A 10.0 ppb (9) N/A N/A N/A 0.28 ppb (3) N/A 4.0 μg/m3 (17) 17.0
 
Sept. 14, 2019, 11 a.m. 33.5 ppb (31) 11.3 ppb (10) N/A 22.0 ppb (20) N/A N/A N/A 0.28 ppb (3) N/A 3.0 μg/m3 (12) 31.0
 
Sept. 14, 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
 
Sept. 14, 2019, 9 a.m. 14.7 ppb (14) 3.9 ppb (4) N/A 11.0 ppb (10) N/A N/A N/A 0.25 ppb (3) N/A 3.0 μg/m3 (12) 14.0
 
Sept. 14, 2019, 8 a.m. 13.8 ppb (13) 3.9 ppb (4) N/A 10.0 ppb (9) N/A N/A N/A 0.26 ppb (3) N/A 0.0 μg/m3 (0) 13.0
 
Sept. 14, 2019, 7 a.m. 13.5 ppb (12) 5.5 ppb (5) N/A 8.0 ppb (7) N/A N/A N/A 0.34 ppb (4) N/A 3.0 μg/m3 (12) 12.0
 
Sept. 14, 2019, 6 a.m. 19.3 ppb (18) 8.0 ppb (7) N/A 11.0 ppb (10) N/A N/A N/A 0.36 ppb (4) N/A 5.0 μg/m3 (21) 21.0
 
Sept. 14, 2019, 5 a.m. 16.5 ppb (15) 7.3 ppb (7) N/A 9.0 ppb (8) N/A N/A N/A 0.33 ppb (4) N/A -1.0 μg/m3 (0) 15.0
 
Sept. 14, 2019, 4 a.m. 17.8 ppb (16) 7.5 ppb (7) N/A 10.0 ppb (9) N/A N/A N/A 0.35 ppb (4) N/A 2.0 μg/m3 (8) 16.0
 
Sept. 14, 2019, 3 a.m. 22.5 ppb (21) 10.5 ppb (10) N/A 12.0 ppb (11) N/A N/A N/A 0.41 ppb (5) N/A 5.0 μg/m3 (21) 21.0
 
Sept. 14, 2019, 2 a.m. 24.7 ppb (23) 13.4 ppb (12) N/A 11.0 ppb (10) N/A N/A N/A 0.4 ppb (4) N/A 4.0 μg/m3 (17) 23.0
 
Sept. 14, 2019, 1 a.m. 32.6 ppb (30) 16.6 ppb (15) N/A 16.0 ppb (15) N/A N/A N/A 0.46 ppb (5) N/A 4.0 μg/m3 (17) 30.0
 
Sept. 14, 2019, midnight 25.9 ppb (24) 12.7 ppb (12) N/A 13.0 ppb (12) N/A N/A N/A 0.36 ppb (4) N/A 4.0 μg/m3 (17) 24.0
 
Sept. 13, 2019, 11 p.m. 35.5 ppb (33) 20.2 ppb (19) N/A 15.0 ppb (14) N/A N/A N/A 0.48 ppb (5) N/A 5.0 μg/m3 (21) 33.0
 
Sept. 13, 2019, 10 p.m. 35.7 ppb (33) 20.3 ppb (19) N/A 15.0 ppb (14) N/A N/A N/A 0.5 ppb (6) N/A 6.0 μg/m3 (25) 33.0
 
Sept. 13, 2019, 9 p.m. 36.6 ppb (34) 21.7 ppb (20) N/A 15.0 ppb (14) N/A N/A N/A 0.45 ppb (5) N/A 7.0 μg/m3 (29) 34.0
 
Sept. 13, 2019, 8 p.m. 32.8 ppb (30) 19.7 ppb (18) N/A 13.0 ppb (12) N/A N/A N/A 0.52 ppb (6) N/A 9.0 μg/m3 (38) 38.0
 
Sept. 13, 2019, 7 p.m. 38.5 ppb (36) 22.1 ppb (20) N/A 16.0 ppb (15) N/A N/A N/A 0.43 ppb (5) N/A 4.0 μg/m3 (17) 36.0
 
Sept. 13, 2019, 6 p.m. 37.4 ppb (35) 22.6 ppb (21) N/A 15.0 ppb (14) N/A N/A N/A 0.42 ppb (5) N/A 7.0 μg/m3 (29) 35.0
 
Sept. 13, 2019, 5 p.m. 41.5 ppb (38) 24.9 ppb (23) N/A 17.0 ppb (16) N/A N/A N/A 0.37 ppb (4) N/A 8.0 μg/m3 (33) 38.0
 
Sept. 13, 2019, 4 p.m. 47.4 ppb (44) 31.0 ppb (29) N/A 16.0 ppb (15) N/A N/A N/A 0.39 ppb (4) N/A 4.0 μg/m3 (17) 44.0
 
Sept. 13, 2019, 3 p.m. 54.3 ppb (50) 30.9 ppb (29) N/A 23.0 ppb (21) N/A N/A N/A 0.37 ppb (4) N/A 6.0 μg/m3 (25) 50.0
 
Sept. 13, 2019, 2 p.m. 51.4 ppb (48) 31.2 ppb (29) N/A 20.0 ppb (19) N/A N/A N/A 0.4 ppb (4) N/A 3.0 μg/m3 (12) 48.0
 
Sept. 13, 2019, 1 p.m. 42.4 ppb (39) 21.7 ppb (20) N/A 21.0 ppb (19) N/A N/A N/A 0.4 ppb (4) N/A 3.0 μg/m3 (12) 39.0
 
Sept. 13, 2019, noon 40.8 ppb (38) 22.3 ppb (21) N/A 19.0 ppb (18) N/A N/A N/A 0.42 ppb (5) N/A 4.0 μg/m3 (17) 38.0
 
Sept. 13, 2019, 11 a.m. 23.8 ppb (22) 11.3 ppb (10) N/A 12.0 ppb (11) N/A N/A N/A 0.3 ppb (3) N/A 4.0 μg/m3 (17) 22.0
 
Sept. 13, 2019, 10 a.m. 15.1 ppb (14) 4.9 ppb (5) N/A 10.0 ppb (9) N/A N/A N/A 0.17 ppb (2) N/A 0.0 μg/m3 (0) 14.0
 
Sept. 13, 2019, 9 a.m. 13.7 ppb (13) 3.9 ppb (4) N/A 10.0 ppb (9) N/A N/A N/A 0.18 ppb (2) N/A 2.0 μg/m3 (8) 13.0
 
Sept. 13, 2019, 8 a.m. 13.6 ppb (13) 4.0 ppb (4) N/A 10.0 ppb (9) N/A N/A N/A 0.18 ppb (2) N/A 3.0 μg/m3 (12) 13.0
 
Sept. 13, 2019, 7 a.m. 11.2 ppb (10) 3.5 ppb (3) N/A 8.0 ppb (7) N/A N/A N/A 0.23 ppb (3) N/A 2.0 μg/m3 (8) 10.0
 
Sept. 13, 2019, 6 a.m. 10.8 ppb (10) 3.0 ppb (3) N/A 8.0 ppb (7) N/A N/A N/A 0.24 ppb (3) N/A 1.0 μg/m3 (4) 10.0
 
Sept. 13, 2019, 5 a.m. 9.4 ppb (9) 2.2 ppb (2) N/A 7.0 ppb (6) N/A N/A N/A 0.22 ppb (2) N/A 4.0 μg/m3 (17) 17.0
 
Sept. 13, 2019, 4 a.m. 27.3 ppb (25) 11.4 ppb (11) N/A 16.0 ppb (15) N/A N/A N/A 0.32 ppb (4) N/A 4.0 μg/m3 (17) 25.0
 
Sept. 13, 2019, 3 a.m. 35.3 ppb (33) 15.8 ppb (15) N/A 19.0 ppb (18) N/A N/A N/A 0.35 ppb (4) N/A 3.0 μg/m3 (12) 33.0
 
Sept. 13, 2019, 2 a.m. 39.4 ppb (36) 19.6 ppb (18) N/A 20.0 ppb (19) N/A N/A N/A 0.51 ppb (6) N/A 0.0 μg/m3 (0) 36.0
 
Sept. 13, 2019, 1 a.m. 42.9 ppb (40) 21.5 ppb (20) N/A 21.0 ppb (19) N/A N/A N/A 0.48 ppb (5) N/A 3.0 μg/m3 (12) 40.0
 
Sept. 13, 2019, midnight 33.3 ppb (31) 14.8 ppb (14) N/A 19.0 ppb (18) N/A N/A N/A 0.4 ppb (4) N/A 6.0 μg/m3 (25) 31.0
 
Sept. 12, 2019, 11 p.m. 35.2 ppb (33) 18.2 ppb (17) N/A 17.0 ppb (16) N/A N/A N/A 0.41 ppb (5) N/A 6.0 μg/m3 (25) 33.0
 
Sept. 12, 2019, 10 p.m. 39.4 ppb (36) 20.0 ppb (19) N/A 19.0 ppb (18) N/A N/A N/A 0.44 ppb (5) N/A 4.0 μg/m3 (17) 36.0
 
Sept. 12, 2019, 9 p.m. 33.6 ppb (31) 19.6 ppb (18) N/A 14.0 ppb (13) N/A N/A N/A 0.36 ppb (4) N/A 5.0 μg/m3 (21) 31.0
 
Sept. 12, 2019, 8 p.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. 12, 2019, 7 p.m. 39.2 ppb (36) 23.7 ppb (22) N/A 15.0 ppb (14) N/A N/A N/A N/A N/A 6.0 μg/m3 (25) 36.0
 
Sept. 12, 2019, 6 p.m. 50.4 ppb (47) 33.0 ppb (31) N/A 17.0 ppb (16) N/A N/A N/A N/A N/A 6.0 μg/m3 (25) 47.0
 
Sept. 12, 2019, 5 p.m. 52.5 ppb (49) 33.5 ppb (31) N/A 19.0 ppb (18) N/A N/A N/A N/A N/A 5.0 μg/m3 (21) 49.0
 
Sept. 12, 2019, 4 p.m. 69.2 ppb (66) 40.6 ppb (38) N/A 29.0 ppb (27) N/A N/A N/A 0.43 ppb (5) N/A 6.0 μg/m3 (25) 66.0
 
Sept. 12, 2019, 3 p.m. 59.0 ppb (55) 40.4 ppb (37) N/A 19.0 ppb (18) N/A N/A N/A 0.44 ppb (5) N/A 7.0 μg/m3 (29) 55.0
 
Sept. 12, 2019, 2 p.m. 32.8 ppb (30) 17.9 ppb (17) N/A 15.0 ppb (14) N/A N/A N/A 0.35 ppb (4) N/A 4.0 μg/m3 (17) 30.0
 
Sept. 12, 2019, 1 p.m. 32.2 ppb (30) 18.2 ppb (17) N/A 14.0 ppb (13) N/A N/A N/A 0.36 ppb (4) N/A 4.0 μg/m3 (17) 30.0
 
Sept. 12, 2019, noon 47.7 ppb (44) 31.4 ppb (29) N/A 16.0 ppb (15) N/A N/A N/A 0.48 ppb (5) N/A 5.0 μg/m3 (21) 44.0
 
Sept. 12, 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
 
Sept. 12, 2019, 10 a.m. 9.2 ppb (9) 1.3 ppb (1) N/A 8.0 ppb (7) N/A N/A N/A 0.19 ppb (2) N/A 6.0 μg/m3 (25) 25.0
 
Sept. 12, 2019, 9 a.m. 8.1 ppb (8) 0.7 ppb (1) N/A 7.0 ppb (6) N/A N/A N/A 0.19 ppb (2) N/A 6.0 μg/m3 (25) 25.0
 
Sept. 12, 2019, 8 a.m. 10.3 ppb (10) 1.2 ppb (1) N/A 9.0 ppb (8) N/A N/A N/A 0.22 ppb (2) N/A 6.0 μg/m3 (25) 25.0
 
Sept. 12, 2019, 7 a.m. 24.2 ppb (22) 6.8 ppb (6) N/A 17.0 ppb (16) N/A N/A N/A 0.37 ppb (4) N/A 9.0 μg/m3 (38) 38.0
 
Sept. 12, 2019, 6 a.m. 88.8 ppb (87) 57.9 ppb (54) N/A 31.0 ppb (29) N/A N/A N/A 0.61 ppb (7) N/A 12.0 μg/m3 (50) 87.0
 
Sept. 12, 2019, 5 a.m. 97.4 ppb (96) 63.9 ppb (61) N/A 33.0 ppb (31) N/A N/A N/A 0.72 ppb (8) N/A 15.0 μg/m3 (56) 96.0
 
Sept. 12, 2019, 4 a.m. 86.3 ppb (84) 53.2 ppb (49) N/A 33.0 ppb (31) N/A N/A N/A 0.78 ppb (9) N/A 8.0 μg/m3 (33) 84.0
 
Sept. 12, 2019, 3 a.m. 66.2 ppb (63) 35.2 ppb (33) N/A 31.0 ppb (29) N/A N/A N/A 0.69 ppb (8) N/A 6.0 μg/m3 (25) 63.0
 
Sept. 12, 2019, 2 a.m. 44.2 ppb (41) 22.6 ppb (21) N/A 22.0 ppb (20) N/A N/A N/A 0.55 ppb (6) N/A 7.0 μg/m3 (29) 41.0
 
Sept. 12, 2019, 1 a.m. 45.2 ppb (42) 24.5 ppb (23) N/A 21.0 ppb (19) N/A N/A N/A 0.59 ppb (7) N/A 5.0 μg/m3 (21) 42.0
 
Sept. 12, 2019, midnight 38.8 ppb (36) 20.6 ppb (19) N/A 18.0 ppb (17) N/A N/A N/A 0.5 ppb (6) N/A 1.0 μg/m3 (4) 36.0
 
Sept. 11, 2019, 11 p.m. 39.8 ppb (37) 22.0 ppb (20) N/A 18.0 ppb (17) N/A N/A N/A 0.44 ppb (5) N/A 1.0 μg/m3 (4) 37.0
 
Sept. 11, 2019, 10 p.m. 43.4 ppb (40) 26.5 ppb (25) N/A 17.0 ppb (16) N/A N/A N/A 0.52 ppb (6) N/A 1.0 μg/m3 (4) 40.0
 
Sept. 11, 2019, 9 p.m. 49.6 ppb (46) 29.9 ppb (28) N/A 20.0 ppb (19) N/A N/A N/A 0.48 ppb (5) N/A 3.0 μg/m3 (12) 46.0
 
Sept. 11, 2019, 8 p.m. 36.7 ppb (34) 24.4 ppb (23) N/A 12.0 ppb (11) N/A N/A N/A 0.47 ppb (5) N/A 6.0 μg/m3 (25) 34.0
 
Sept. 11, 2019, 7 p.m. 41.9 ppb (39) 27.3 ppb (25) N/A 15.0 ppb (14) N/A N/A N/A 0.38 ppb (4) N/A 5.0 μg/m3 (21) 39.0
 
Sept. 11, 2019, 6 p.m. 42.9 ppb (40) 29.3 ppb (27) N/A 14.0 ppb (13) N/A N/A N/A 0.42 ppb (5) N/A 6.0 μg/m3 (25) 40.0
 
Sept. 11, 2019, 5 p.m. 47.0 ppb (44) 28.4 ppb (26) N/A 19.0 ppb (18) N/A N/A N/A 0.37 ppb (4) N/A 5.0 μg/m3 (21) 44.0
 
Sept. 11, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 7.0 μg/m3 (29) 29.0
 
Sept. 11, 2019, 3 p.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
 
Sept. 11, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 7.0 μg/m3 (29) 29.0
 
Sept. 11, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A N/A 0.29 ppb (3) N/A 5.0 μg/m3 (21) 21.0
 
Sept. 11, 2019, noon N/A N/A N/A N/A N/A N/A N/A 0.52 ppb (6) N/A 8.0 μg/m3 (33) 33.0
 
Sept. 11, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A N/A 0.47 ppb (5) N/A 7.0 μg/m3 (29) 29.0
 
Sept. 11, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A N/A 0.32 ppb (4) N/A 5.0 μg/m3 (21) 21.0
 
Sept. 11, 2019, 9 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. 11, 2019, 8 a.m. 9.2 ppb (9) 0.8 ppb (1) N/A N/A N/A N/A N/A N/A N/A 3.0 μg/m3 (12) 12.0
 
Sept. 11, 2019, 7 a.m. 11.6 ppb (11) 1.6 ppb (1) N/A N/A N/A N/A N/A N/A N/A 4.0 μg/m3 (17) 17.0
 
Sept. 11, 2019, 6 a.m. 18.8 ppb (17) 3.5 ppb (3) N/A 15.0 ppb (14) N/A N/A N/A 0.33 ppb (4) N/A 4.0 μg/m3 (17) 17.0
 
Sept. 11, 2019, 5 a.m. 16.6 ppb (15) 3.1 ppb (3) N/A 14.0 ppb (13) N/A N/A N/A 0.32 ppb (4) N/A 2.0 μg/m3 (8) 15.0
 
Sept. 11, 2019, 4 a.m. 13.0 ppb (12) 1.3 ppb (1) N/A 12.0 ppb (11) N/A N/A N/A 0.27 ppb (3) N/A 5.0 μg/m3 (21) 21.0
 
Sept. 11, 2019, 3 a.m. 17.4 ppb (16) 2.7 ppb (3) N/A 15.0 ppb (14) N/A N/A N/A 0.31 ppb (3) N/A 6.0 μg/m3 (25) 25.0
 
Sept. 11, 2019, 2 a.m. 29.0 ppb (27) 12.1 ppb (11) N/A 17.0 ppb (16) N/A N/A N/A 0.5 ppb (6) N/A 3.0 μg/m3 (12) 27.0
 
Sept. 11, 2019, 1 a.m. 42.6 ppb (39) 21.6 ppb (20) N/A 21.0 ppb (19) N/A N/A N/A 0.56 ppb (6) N/A 7.0 μg/m3 (29) 39.0
 
Sept. 11, 2019, midnight 56.9 ppb (53) 30.6 ppb (28) N/A 26.0 ppb (24) N/A N/A N/A 0.49 ppb (5) N/A 5.0 μg/m3 (21) 53.0
 
Sept. 10, 2019, 11 p.m. 51.5 ppb (48) 29.4 ppb (27) N/A 22.0 ppb (20) N/A N/A N/A 0.47 ppb (5) N/A 3.0 μg/m3 (12) 48.0
 
Sept. 10, 2019, 10 p.m. 45.6 ppb (42) 28.3 ppb (26) N/A 17.0 ppb (16) N/A N/A N/A 0.52 ppb (6) N/A -1.0 μg/m3 (0) 42.0
 
Sept. 10, 2019, 9 p.m. 51.4 ppb (48) 35.1 ppb (32) N/A 16.0 ppb (15) N/A N/A N/A 0.53 ppb (6) N/A 1.0 μg/m3 (4) 48.0
 
Sept. 10, 2019, 8 p.m. 48.1 ppb (45) 34.8 ppb (32) N/A 13.0 ppb (12) N/A N/A N/A 0.46 ppb (5) N/A 5.0 μg/m3 (21) 45.0
 
Sept. 10, 2019, 7 p.m. 49.2 ppb (46) 34.9 ppb (32) N/A 14.0 ppb (13) N/A N/A N/A 0.4 ppb (4) N/A 7.0 μg/m3 (29) 46.0
 
Sept. 10, 2019, 6 p.m. 78.4 ppb (76) 58.9 ppb (55) N/A 19.0 ppb (18) N/A N/A N/A 0.51 ppb (6) N/A 10.0 μg/m3 (42) 76.0
 
Sept. 10, 2019, 5 p.m. 108.6 ppb (101) 80.9 ppb (79) N/A 28.0 ppb (26) N/A N/A N/A 0.45 ppb (5) N/A 11.0 μg/m3 (46) 101.0
 
Sept. 10, 2019, 4 p.m. 108.7 ppb (101) 78.5 ppb (76) N/A 30.0 ppb (28) N/A N/A N/A 0.5 ppb (6) N/A 9.0 μg/m3 (38) 101.0
 
Sept. 10, 2019, 3 p.m. 94.4 ppb (93) 67.3 ppb (64) N/A N/A N/A N/A N/A N/A N/A 8.0 μg/m3 (33) 93.0
 
Sept. 10, 2019, 2 p.m. 102.1 ppb (100) 69.3 ppb (66) N/A N/A N/A N/A N/A N/A N/A 7.0 μg/m3 (29) 100.0
 
Sept. 10, 2019, 1 p.m. 95.5 ppb (94) 69.9 ppb (67) N/A N/A N/A N/A N/A N/A N/A 8.0 μg/m3 (33) 94.0
 
Sept. 10, 2019, noon 92.7 ppb (91) 69.2 ppb (66) N/A N/A N/A N/A N/A N/A N/A 8.0 μg/m3 (33) 91.0
 
Sept. 10, 2019, 11 a.m. 57.7 ppb (54) 36.1 ppb (33) N/A N/A N/A N/A N/A N/A N/A 3.0 μg/m3 (12) 54.0
 
Sept. 10, 2019, 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
 
Sept. 10, 2019, 9 a.m. 26.4 ppb (24) 11.4 ppb (11) N/A 15.0 ppb (14) N/A N/A N/A 0.31 ppb (3) N/A 2.0 μg/m3 (8) 24.0
 
Sept. 10, 2019, 8 a.m. 15.4 ppb (14) 1.5 ppb (1) N/A 14.0 ppb (13) N/A N/A N/A 0.29 ppb (3) N/A 2.0 μg/m3 (8) 14.0
 
Sept. 10, 2019, 7 a.m. 11.0 ppb (10) 0.9 ppb (1) N/A 10.0 ppb (9) N/A N/A N/A 0.26 ppb (3) N/A 4.0 μg/m3 (17) 17.0
 
Sept. 10, 2019, 6 a.m. 11.5 ppb (11) 1.1 ppb (1) N/A 10.0 ppb (9) N/A N/A N/A 0.27 ppb (3) N/A 6.0 μg/m3 (25) 25.0
 
Sept. 10, 2019, 5 a.m. 11.7 ppb (11) 1.7 ppb (2) N/A 10.0 ppb (9) N/A N/A N/A 0.24 ppb (3) N/A 1.0 μg/m3 (4) 11.0
 
Sept. 10, 2019, 4 a.m. 13.7 ppb (13) 1.1 ppb (1) N/A 13.0 ppb (12) N/A N/A N/A 0.27 ppb (3) N/A 0.0 μg/m3 (0) 13.0
 
Sept. 10, 2019, 3 a.m. 14.7 ppb (14) 3.1 ppb (3) N/A 12.0 ppb (11) N/A N/A N/A 0.28 ppb (3) N/A 4.0 μg/m3 (17) 17.0
 
Sept. 10, 2019, 2 a.m. 18.3 ppb (17) 5.7 ppb (5) N/A 13.0 ppb (12) N/A N/A N/A 0.36 ppb (4) N/A 4.0 μg/m3 (17) 17.0
 
Sept. 10, 2019, 1 a.m. 34.7 ppb (32) 16.9 ppb (16) N/A 18.0 ppb (17) N/A N/A N/A 0.45 ppb (5) N/A 5.0 μg/m3 (21) 32.0
 
Sept. 10, 2019, midnight 49.6 ppb (46) 28.0 ppb (26) N/A 22.0 ppb (20) N/A N/A N/A 0.42 ppb (5) N/A 7.0 μg/m3 (29) 46.0
 
Sept. 9, 2019, 11 p.m. 54.6 ppb (51) 29.7 ppb (28) N/A 25.0 ppb (23) N/A N/A N/A 0.51 ppb (6) N/A 1.0 μg/m3 (4) 51.0
 
Sept. 9, 2019, 10 p.m. 55.0 ppb (51) 31.6 ppb (29) N/A 23.0 ppb (21) N/A N/A N/A 0.54 ppb (6) N/A 1.0 μg/m3 (4) 51.0
 
Sept. 9, 2019, 9 p.m. 42.8 ppb (40) 25.3 ppb (23) N/A 18.0 ppb (17) N/A N/A N/A 0.41 ppb (5) N/A 4.0 μg/m3 (17) 40.0
 
Sept. 9, 2019, 8 p.m. 35.1 ppb (32) 20.7 ppb (19) N/A 14.0 ppb (13) N/A N/A N/A 0.34 ppb (4) N/A 4.0 μg/m3 (17) 32.0
 
Sept. 9, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 2.0 μg/m3 (8) 8.0
 
Sept. 9, 2019, 6 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. 9, 2019, 5 p.m. 59.5 ppb (56) 42.3 ppb (39) N/A 17.0 ppb (16) N/A N/A N/A 0.38 ppb (4) N/A 5.0 μg/m3 (21) 56.0
 
Sept. 9, 2019, 4 p.m. 66.3 ppb (63) 42.6 ppb (39) N/A 24.0 ppb (22) N/A N/A N/A 0.47 ppb (5) N/A 4.0 μg/m3 (17) 63.0
 
Sept. 9, 2019, 3 p.m. 70.9 ppb (68) 44.6 ppb (41) N/A 26.0 ppb (24) N/A N/A N/A 0.44 ppb (5) N/A 7.0 μg/m3 (29) 68.0
 
Sept. 9, 2019, 2 p.m. 64.4 ppb (61) 41.0 ppb (38) N/A 23.0 ppb (21) N/A N/A N/A 0.41 ppb (5) N/A 6.0 μg/m3 (25) 61.0
 
Sept. 9, 2019, 1 p.m. 63.7 ppb (60) 42.5 ppb (39) N/A 21.0 ppb (19) N/A N/A N/A 0.46 ppb (5) N/A 5.0 μg/m3 (21) 60.0
 
Sept. 9, 2019, noon 55.5 ppb (52) 35.0 ppb (32) N/A 20.0 ppb (19) N/A N/A N/A 0.5 ppb (6) N/A 3.0 μg/m3 (12) 52.0
 
Sept. 9, 2019, 11 a.m. 28.9 ppb (27) 15.9 ppb (15) N/A 13.0 ppb (12) N/A N/A N/A 0.32 ppb (4) N/A 1.0 μg/m3 (4) 27.0
 
Sept. 9, 2019, 10 a.m. 18.3 ppb (17) 7.6 ppb (7) N/A 11.0 ppb (10) N/A N/A N/A 0.24 ppb (3) N/A -1.0 μg/m3 (0) 17.0
 
Sept. 9, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A -1.0 μg/m3 (0) N/A
Sept. 9, 2019, 8 a.m. 26.4 ppb (24) 9.7 ppb (9) N/A 17.0 ppb (16) N/A N/A N/A 0.23 ppb (3) N/A 2.0 μg/m3 (8) 24.0
 
Sept. 9, 2019, 7 a.m. 33.5 ppb (31) 13.1 ppb (12) N/A 20.0 ppb (19) N/A N/A N/A 0.31 ppb (3) N/A 3.0 μg/m3 (12) 31.0
 
Sept. 9, 2019, 6 a.m. 23.1 ppb (21) 9.6 ppb (9) N/A 13.0 ppb (12) N/A N/A N/A 0.37 ppb (4) N/A 0.0 μg/m3 (0) 21.0
 
Sept. 9, 2019, 5 a.m. 13.7 ppb (13) 4.6 ppb (4) N/A 9.0 ppb (8) N/A N/A N/A 0.32 ppb (4) N/A 2.0 μg/m3 (8) 13.0
 
Sept. 9, 2019, 4 a.m. 15.8 ppb (15) 6.2 ppb (6) N/A 10.0 ppb (9) N/A N/A N/A 0.33 ppb (4) N/A 5.0 μg/m3 (21) 21.0
 
Sept. 9, 2019, 3 a.m. 19.2 ppb (18) 8.6 ppb (8) N/A 11.0 ppb (10) N/A N/A N/A 0.41 ppb (5) N/A 3.0 μg/m3 (12) 18.0
 
Sept. 9, 2019, 2 a.m. 20.9 ppb (19) 9.3 ppb (9) N/A 12.0 ppb (11) N/A N/A N/A 0.36 ppb (4) N/A 4.0 μg/m3 (17) 19.0
 
Sept. 9, 2019, 1 a.m. 23.0 ppb (21) 11.7 ppb (11) N/A 11.0 ppb (10) N/A N/A N/A 0.45 ppb (5) N/A 3.0 μg/m3 (12) 21.0
 
Sept. 9, 2019, midnight 31.4 ppb (29) 16.9 ppb (16) N/A 15.0 ppb (14) N/A N/A N/A 0.49 ppb (5) N/A 4.0 μg/m3 (17) 29.0
 
Sept. 8, 2019, 11 p.m. 34.5 ppb (32) 19.8 ppb (18) N/A 15.0 ppb (14) N/A N/A N/A 0.49 ppb (5) N/A 4.0 μg/m3 (17) 32.0
 
Sept. 8, 2019, 10 p.m. 41.8 ppb (39) 24.2 ppb (22) N/A 18.0 ppb (17) N/A N/A N/A 0.51 ppb (6) N/A 3.0 μg/m3 (12) 39.0
 
Sept. 8, 2019, 9 p.m. 23.0 ppb (21) 13.3 ppb (12) N/A 10.0 ppb (9) N/A N/A N/A 0.44 ppb (5) N/A 5.0 μg/m3 (21) 21.0
 
Sept. 8, 2019, 8 p.m. 17.8 ppb (16) 10.8 ppb (10) N/A 7.0 ppb (6) N/A N/A N/A 0.36 ppb (4) N/A 3.0 μg/m3 (12) 16.0
 
Sept. 8, 2019, 7 p.m. 18.8 ppb (17) 11.0 ppb (10) N/A 8.0 ppb (7) N/A N/A N/A 0.37 ppb (4) N/A 2.0 μg/m3 (8) 17.0
 
Sept. 8, 2019, 6 p.m. 23.2 ppb (21) 14.3 ppb (13) N/A 9.0 ppb (8) N/A N/A N/A 0.43 ppb (5) N/A 2.0 μg/m3 (8) 21.0
 
Sept. 8, 2019, 5 p.m. 22.7 ppb (21) 12.2 ppb (11) N/A 10.0 ppb (9) N/A N/A N/A 0.36 ppb (4) N/A 2.0 μg/m3 (8) 21.0
 
Sept. 8, 2019, 4 p.m. 21.8 ppb (20) 11.8 ppb (11) N/A 10.0 ppb (9) N/A N/A N/A 0.37 ppb (4) N/A 1.0 μg/m3 (4) 20.0
 
Sept. 8, 2019, 3 p.m. 24.5 ppb (23) 13.9 ppb (13) N/A 11.0 ppb (10) N/A N/A N/A 0.34 ppb (4) N/A 0.0 μg/m3 (0) 23.0
 
Sept. 8, 2019, 2 p.m. 21.5 ppb (20) 9.6 ppb (9) N/A 12.0 ppb (11) N/A N/A N/A 0.31 ppb (3) N/A 1.0 μg/m3 (4) 20.0
 
Sept. 8, 2019, 1 p.m. 9.1 ppb (8) 3.1 ppb (3) N/A 6.0 ppb (6) N/A N/A N/A 0.24 ppb (3) N/A 2.0 μg/m3 (8) 8.0
 
Sept. 8, 2019, noon 6.5 ppb (6) 2.1 ppb (2) N/A 4.0 ppb (4) N/A N/A N/A 0.19 ppb (2) N/A 2.0 μg/m3 (8) 8.0
 
Sept. 8, 2019, 11 a.m. 4.7 ppb (4) 1.1 ppb (1) N/A 4.0 ppb (4) N/A N/A N/A 0.15 ppb (2) N/A 2.0 μg/m3 (8) 8.0
 
Sept. 8, 2019, 10 a.m. 4.3 ppb (4) 0.2 ppb (0) N/A 4.0 ppb (4) N/A N/A N/A 0.16 ppb (2) N/A 0.0 μg/m3 (0) 4.0
 
Sept. 8, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 0.0 μg/m3 (0) N/A
Sept. 8, 2019, 8 a.m. 10.5 ppb (10) 3.9 ppb (4) N/A 7.0 ppb (6) N/A N/A N/A 0.2 ppb (2) N/A 0.0 μg/m3 (0) 10.0
 
Sept. 8, 2019, 7 a.m. 10.5 ppb (10) 2.6 ppb (2) N/A 8.0 ppb (7) N/A N/A N/A 0.31 ppb (3) N/A 0.0 μg/m3 (0) 10.0