ID: 2379

AQSQID: 530330030

Site Name: Seattle-10th & Weller

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

Updated: July 8, 2020, 12:34 a.m.

Location: Seattle (Little Saigon), WA

Reporting: True, Located: True

Current AQI: 39.0

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
June 30, 2020, 9 p.m. 34.2 ppb (32) 19.8 ppb (18) N/A 14.0 ppb (13) N/A N/A N/A 0.39 ppb (4) N/A 3.0 μg/m3 (12) 32.0
 
June 30, 2020, 8 p.m. 27.2 ppb (25) 17.9 ppb (17) N/A 9.0 ppb (8) N/A N/A N/A 0.3 ppb (3) N/A 1.0 μg/m3 (4) 25.0
 
June 30, 2020, 7 p.m. 35.2 ppb (33) 22.4 ppb (21) N/A 13.0 ppb (12) N/A N/A N/A 0.37 ppb (4) N/A 5.0 μg/m3 (21) 33.0
 
June 30, 2020, 6 p.m. 58.2 ppb (54) 38.2 ppb (35) N/A 20.0 ppb (19) N/A N/A N/A 0.4 ppb (4) N/A 7.0 μg/m3 (29) 54.0
 
June 30, 2020, 5 p.m. 51.9 ppb (48) 32.5 ppb (30) N/A 19.0 ppb (18) N/A N/A N/A 0.37 ppb (4) N/A 6.0 μg/m3 (25) 48.0
 
June 30, 2020, 4 p.m. 52.0 ppb (48) 33.1 ppb (31) N/A 19.0 ppb (18) N/A N/A N/A 0.32 ppb (4) N/A 6.0 μg/m3 (25) 48.0
 
June 30, 2020, 3 p.m. 54.8 ppb (51) 34.4 ppb (32) N/A 20.0 ppb (19) N/A N/A N/A 0.32 ppb (4) N/A 6.0 μg/m3 (25) 51.0
 
June 30, 2020, 2 p.m. 33.3 ppb (31) 19.2 ppb (18) N/A 14.0 ppb (13) N/A N/A N/A 0.26 ppb (3) N/A 2.0 μg/m3 (8) 31.0
 
June 30, 2020, 1 p.m. 60.2 ppb (57) 41.4 ppb (38) N/A 19.0 ppb (18) N/A N/A N/A 0.48 ppb (5) N/A 2.0 μg/m3 (8) 57.0
 
June 30, 2020, noon 45.6 ppb (42) 28.1 ppb (26) N/A 17.0 ppb (16) N/A N/A N/A 0.5 ppb (6) N/A 3.0 μg/m3 (12) 42.0
 
June 30, 2020, 11 a.m. 14.8 ppb (14) 6.9 ppb (6) N/A 8.0 ppb (7) N/A N/A N/A 0.19 ppb (2) N/A 5.0 μg/m3 (21) 21.0
 
June 30, 2020, 10 a.m. 3.7 ppb (3) 0.5 ppb (0) N/A 3.0 ppb (3) N/A N/A N/A 0.1 ppb (1) N/A 5.0 μg/m3 (21) 21.0
 
June 30, 2020, 9 a.m. 5.3 ppb (5) 1.0 ppb (1) N/A 4.0 ppb (4) N/A N/A N/A 0.11 ppb (1) N/A 5.0 μg/m3 (21) 21.0
 
June 30, 2020, 8 a.m. 6.3 ppb (6) 1.8 ppb (2) N/A 5.0 ppb (5) N/A N/A N/A 0.11 ppb (1) N/A 5.0 μg/m3 (21) 21.0
 
June 30, 2020, 7 a.m. 17.0 ppb (16) 6.7 ppb (6) N/A 10.0 ppb (9) N/A N/A N/A 0.17 ppb (2) N/A 5.0 μg/m3 (21) 21.0
 
June 30, 2020, 6 a.m. 14.2 ppb (13) 3.8 ppb (4) N/A 10.0 ppb (9) N/A N/A N/A 0.14 ppb (2) N/A 5.0 μg/m3 (21) 21.0
 
June 30, 2020, 5 a.m. 14.1 ppb (13) 4.5 ppb (4) N/A 10.0 ppb (9) N/A N/A N/A 0.15 ppb (2) N/A 7.0 μg/m3 (29) 29.0
 
June 30, 2020, 4 a.m. 19.9 ppb (18) 9.0 ppb (8) N/A 11.0 ppb (10) N/A N/A N/A 0.24 ppb (3) N/A 5.0 μg/m3 (21) 21.0
 
June 30, 2020, 3 a.m. 15.0 ppb (14) 9.8 ppb (9) N/A 5.0 ppb (5) N/A N/A N/A 0.24 ppb (3) N/A 5.0 μg/m3 (21) 21.0
 
June 30, 2020, 2 a.m. 14.0 ppb (13) 9.5 ppb (9) N/A 4.0 ppb (4) N/A N/A N/A 0.25 ppb (3) N/A 6.0 μg/m3 (25) 25.0
 
June 30, 2020, 1 a.m. 20.7 ppb (19) 13.3 ppb (12) N/A 7.0 ppb (6) N/A N/A N/A 0.37 ppb (4) N/A 6.0 μg/m3 (25) 25.0
 
June 30, 2020, midnight 25.6 ppb (24) 18.0 ppb (17) N/A 8.0 ppb (7) N/A N/A N/A 0.38 ppb (4) N/A 5.0 μg/m3 (21) 24.0
 
June 29, 2020, 11 p.m. 24.3 ppb (23) 16.0 ppb (15) N/A 8.0 ppb (7) N/A N/A N/A 0.34 ppb (4) N/A 6.0 μg/m3 (25) 25.0
 
June 29, 2020, 10 p.m. 32.3 ppb (30) 22.9 ppb (21) N/A 9.0 ppb (8) N/A N/A N/A 0.44 ppb (5) N/A 6.0 μg/m3 (25) 30.0
 
June 29, 2020, 9 p.m. 29.0 ppb (27) 20.1 ppb (19) N/A 9.0 ppb (8) N/A N/A N/A 0.35 ppb (4) N/A 6.0 μg/m3 (25) 27.0
 
June 29, 2020, 8 p.m. 29.0 ppb (27) 18.4 ppb (17) N/A 11.0 ppb (10) N/A N/A N/A 0.38 ppb (4) N/A 7.0 μg/m3 (29) 29.0
 
June 29, 2020, 7 p.m. 27.4 ppb (25) 18.9 ppb (18) N/A 8.0 ppb (7) N/A N/A N/A 0.31 ppb (3) N/A 5.0 μg/m3 (21) 25.0
 
June 29, 2020, 6 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
 
June 29, 2020, 5 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
 
June 29, 2020, 4 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
 
June 29, 2020, 3 p.m. 46.5 ppb (43) 31.2 ppb (29) N/A 15.0 ppb (14) N/A N/A N/A 0.31 ppb (3) N/A 2.0 μg/m3 (8) 43.0
 
June 29, 2020, 2 p.m. 48.7 ppb (45) 28.9 ppb (27) N/A 20.0 ppb (19) N/A N/A N/A 0.31 ppb (3) N/A 1.0 μg/m3 (4) 45.0
 
June 29, 2020, 1 p.m. 44.8 ppb (41) 29.9 ppb (28) N/A 15.0 ppb (14) N/A N/A N/A 0.4 ppb (4) N/A 5.0 μg/m3 (21) 41.0
 
June 29, 2020, noon 45.0 ppb (42) 30.8 ppb (29) N/A 14.0 ppb (13) N/A N/A N/A 0.47 ppb (5) N/A 8.0 μg/m3 (33) 42.0
 
June 29, 2020, 11 a.m. 19.0 ppb (18) 9.9 ppb (9) N/A 9.0 ppb (8) N/A N/A N/A 0.23 ppb (3) N/A 5.0 μg/m3 (21) 21.0
 
June 29, 2020, 10 a.m. 16.7 ppb (15) 7.1 ppb (7) N/A 10.0 ppb (9) N/A N/A N/A 0.14 ppb (2) N/A 8.0 μg/m3 (33) 33.0
 
June 29, 2020, 9 a.m. 18.8 ppb (17) 4.8 ppb (4) N/A 14.0 ppb (13) N/A N/A N/A 0.23 ppb (3) N/A 7.0 μg/m3 (29) 29.0
 
June 29, 2020, 8 a.m. 20.6 ppb (19) 3.5 ppb (3) N/A 17.0 ppb (16) N/A N/A N/A 0.31 ppb (3) N/A 7.0 μg/m3 (29) 29.0
 
June 29, 2020, 7 a.m. 25.5 ppb (24) 6.3 ppb (6) N/A 19.0 ppb (18) N/A N/A N/A 0.53 ppb (6) N/A 12.0 μg/m3 (50) 50.0
 
June 29, 2020, 6 a.m. 22.9 ppb (21) 4.5 ppb (4) N/A 18.0 ppb (17) N/A N/A N/A 0.43 ppb (5) N/A 10.0 μg/m3 (42) 42.0
 
June 29, 2020, 5 a.m. 20.2 ppb (19) 4.0 ppb (4) N/A 16.0 ppb (15) N/A N/A N/A 0.36 ppb (4) N/A 4.0 μg/m3 (17) 19.0
 
June 29, 2020, 4 a.m. 44.3 ppb (41) 16.3 ppb (15) N/A 28.0 ppb (26) N/A N/A N/A 0.43 ppb (5) N/A 4.0 μg/m3 (17) 41.0
 
June 29, 2020, 3 a.m. 34.4 ppb (32) 14.8 ppb (14) N/A 20.0 ppb (19) N/A N/A N/A 0.64 ppb (7) N/A 3.0 μg/m3 (12) 32.0
 
June 29, 2020, 2 a.m. 23.9 ppb (22) 11.6 ppb (11) N/A 12.0 ppb (11) N/A N/A N/A 0.53 ppb (6) N/A 3.0 μg/m3 (12) 22.0
 
June 29, 2020, 1 a.m. 6.4 ppb (6) 3.0 ppb (3) N/A 3.0 ppb (3) N/A N/A N/A 0.21 ppb (2) N/A 4.0 μg/m3 (17) 17.0
 
June 29, 2020, midnight 16.8 ppb (16) 8.6 ppb (8) N/A 8.0 ppb (7) N/A N/A N/A 0.29 ppb (3) N/A 1.0 μg/m3 (4) 16.0
 
June 28, 2020, 11 p.m. 7.4 ppb (7) 3.7 ppb (3) N/A 4.0 ppb (4) N/A N/A N/A 0.24 ppb (3) N/A 0.0 μg/m3 (0) 7.0
 
June 28, 2020, 10 p.m. 11.1 ppb (10) 5.6 ppb (5) 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
 
June 28, 2020, 9 p.m. 11.7 ppb (11) 6.7 ppb (6) N/A 5.0 ppb (5) N/A N/A N/A 0.29 ppb (3) N/A 5.0 μg/m3 (21) 21.0
 
June 28, 2020, 8 p.m. 12.8 ppb (12) 7.0 ppb (6) N/A 6.0 ppb (6) N/A N/A N/A 0.27 ppb (3) N/A 1.0 μg/m3 (4) 12.0
 
June 28, 2020, 7 p.m. 13.4 ppb (12) 7.6 ppb (7) N/A 6.0 ppb (6) N/A N/A N/A 0.31 ppb (3) N/A 1.0 μg/m3 (4) 12.0
 
June 28, 2020, 6 p.m. 18.4 ppb (17) 11.5 ppb (11) N/A 7.0 ppb (6) N/A N/A N/A 0.35 ppb (4) N/A 2.0 μg/m3 (8) 17.0
 
June 28, 2020, 5 p.m. 25.4 ppb (24) 15.6 ppb (14) N/A 10.0 ppb (9) N/A N/A N/A 0.34 ppb (4) N/A 3.0 μg/m3 (12) 24.0
 
June 28, 2020, 4 p.m. 42.7 ppb (40) 26.2 ppb (24) N/A 16.0 ppb (15) N/A N/A N/A 0.37 ppb (4) N/A 2.0 μg/m3 (8) 40.0
 
June 28, 2020, 3 p.m. 33.0 ppb (31) 19.0 ppb (18) N/A 14.0 ppb (13) N/A N/A N/A 0.32 ppb (4) N/A 1.0 μg/m3 (4) 31.0
 
June 28, 2020, 2 p.m. 33.3 ppb (31) 16.4 ppb (15) N/A 17.0 ppb (16) N/A N/A N/A 0.31 ppb (3) N/A 1.0 μg/m3 (4) 31.0
 
June 28, 2020, 1 p.m. 35.3 ppb (33) 18.2 ppb (17) N/A 17.0 ppb (16) N/A N/A N/A 0.3 ppb (3) N/A 1.0 μg/m3 (4) 33.0
 
June 28, 2020, noon 6.6 ppb (6) 2.2 ppb (2) N/A 4.0 ppb (4) N/A N/A N/A 0.25 ppb (3) N/A 0.0 μg/m3 (0) 6.0
 
June 28, 2020, 11 a.m. 4.5 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
 
June 28, 2020, 10 a.m. 2.8 ppb (3) 0.5 ppb (0) N/A 2.0 ppb (2) N/A N/A N/A 0.14 ppb (2) N/A 4.0 μg/m3 (17) 17.0
 
June 28, 2020, 9 a.m. 2.0 ppb (2) 0.3 ppb (0) N/A 2.0 ppb (2) N/A N/A N/A 0.12 ppb (1) N/A 2.0 μg/m3 (8) 8.0
 
June 28, 2020, 8 a.m. 2.2 ppb (2) 0.1 ppb (0) N/A 2.0 ppb (2) N/A N/A N/A 0.13 ppb (1) N/A 1.0 μg/m3 (4) 4.0
 
June 28, 2020, 7 a.m. 4.1 ppb (4) 0.4 ppb (0) 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
 
June 28, 2020, 6 a.m. 10.5 ppb (10) 3.2 ppb (3) N/A 7.0 ppb (6) N/A N/A N/A 0.18 ppb (2) N/A 5.0 μg/m3 (21) 21.0
 
June 28, 2020, 5 a.m. 4.7 ppb (4) 1.2 ppb (1) N/A 4.0 ppb (4) N/A N/A N/A 0.18 ppb (2) N/A 5.0 μg/m3 (21) 21.0
 
June 28, 2020, 4 a.m. 4.6 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
 
June 28, 2020, 3 a.m. 5.3 ppb (5) 1.0 ppb (1) N/A 4.0 ppb (4) N/A N/A N/A 0.2 ppb (2) N/A 3.0 μg/m3 (12) 12.0
 
June 28, 2020, 2 a.m. 4.8 ppb (4) 1.0 ppb (1) N/A 4.0 ppb (4) N/A N/A N/A 0.18 ppb (2) N/A 0.0 μg/m3 (0) 4.0
 
June 28, 2020, 1 a.m. 5.5 ppb (5) 1.4 ppb (1) N/A 4.0 ppb (4) N/A N/A N/A 0.18 ppb (2) N/A 2.0 μg/m3 (8) 8.0
 
June 28, 2020, midnight 5.3 ppb (5) 1.6 ppb (1) 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
 
June 27, 2020, 11 p.m. 5.2 ppb (5) 1.8 ppb (2) N/A 3.0 ppb (3) N/A N/A N/A 0.19 ppb (2) N/A 1.0 μg/m3 (4) 5.0
 
June 27, 2020, 10 p.m. 6.0 ppb (6) 2.2 ppb (2) N/A 4.0 ppb (4) N/A N/A N/A 0.2 ppb (2) N/A -1.0 μg/m3 (0) 6.0
 
June 27, 2020, 9 p.m. 6.2 ppb (6) 1.9 ppb (2) N/A 4.0 ppb (4) N/A N/A N/A 0.2 ppb (2) N/A 0.0 μg/m3 (0) 6.0
 
June 27, 2020, 8 p.m. 6.7 ppb (6) 1.7 ppb (2) N/A 5.0 ppb (5) N/A N/A N/A 0.2 ppb (2) N/A 1.0 μg/m3 (4) 6.0
 
June 27, 2020, 7 p.m. 19.5 ppb (18) 8.7 ppb (8) N/A 11.0 ppb (10) N/A N/A N/A 0.26 ppb (3) N/A 0.0 μg/m3 (0) 18.0
 
June 27, 2020, 6 p.m. 7.3 ppb (7) 2.5 ppb (2) N/A 5.0 ppb (5) N/A N/A N/A 0.19 ppb (2) N/A 0.0 μg/m3 (0) 7.0
 
June 27, 2020, 5 p.m. 9.5 ppb (9) 4.4 ppb (4) N/A 5.0 ppb (5) N/A N/A N/A 0.23 ppb (3) N/A 1.0 μg/m3 (4) 9.0
 
June 27, 2020, 4 p.m. 3.9 ppb (4) 1.3 ppb (1) N/A 3.0 ppb (3) N/A N/A N/A 0.15 ppb (2) N/A 1.0 μg/m3 (4) 4.0
 
June 27, 2020, 3 p.m. 4.3 ppb (4) 1.0 ppb (1) N/A 3.0 ppb (3) N/A N/A N/A 0.13 ppb (1) N/A 0.0 μg/m3 (0) 4.0
 
June 27, 2020, 2 p.m. 2.8 ppb (3) 0.4 ppb (0) N/A 2.0 ppb (2) N/A N/A N/A 0.12 ppb (1) N/A 0.0 μg/m3 (0) 3.0
 
June 27, 2020, 1 p.m. 2.1 ppb (2) 0.1 ppb (0) N/A 2.0 ppb (2) N/A N/A N/A 0.11 ppb (1) N/A 0.0 μg/m3 (0) 2.0
 
June 27, 2020, noon 2.1 ppb (2) 0.2 ppb (0) N/A 2.0 ppb (2) N/A N/A N/A 0.11 ppb (1) N/A 0.0 μg/m3 (0) 2.0
 
June 27, 2020, 11 a.m. 2.5 ppb (2) 0.4 ppb (0) N/A 2.0 ppb (2) N/A N/A N/A 0.09 ppb (1) N/A 2.0 μg/m3 (8) 8.0
 
June 27, 2020, 10 a.m. 2.6 ppb (2) 0.4 ppb (0) N/A 2.0 ppb (2) N/A N/A N/A 0.09 ppb (1) N/A 2.0 μg/m3 (8) 8.0
 
June 27, 2020, 9 a.m. 1.9 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A N/A N/A 0.09 ppb (1) N/A -1.0 μg/m3 (0) 2.0
 
June 27, 2020, 8 a.m. 2.2 ppb (2) 0.3 ppb (0) N/A 2.0 ppb (2) N/A N/A N/A 0.09 ppb (1) N/A 1.0 μg/m3 (4) 4.0
 
June 27, 2020, 7 a.m. 2.7 ppb (3) 0.4 ppb (0) N/A 2.0 ppb (2) N/A N/A N/A 0.07 ppb (1) N/A 2.0 μg/m3 (8) 8.0
 
June 27, 2020, 6 a.m. 3.0 ppb (3) 0.5 ppb (0) N/A 2.0 ppb (2) N/A N/A N/A 0.08 ppb (1) N/A 1.0 μg/m3 (4) 4.0
 
June 27, 2020, 5 a.m. 3.5 ppb (3) 0.7 ppb (1) N/A 3.0 ppb (3) N/A N/A N/A 0.1 ppb (1) N/A -1.0 μg/m3 (0) 3.0
 
June 27, 2020, 4 a.m. 3.3 ppb (3) 0.7 ppb (1) N/A 3.0 ppb (3) N/A N/A N/A 0.09 ppb (1) N/A 0.0 μg/m3 (0) 3.0
 
June 27, 2020, 3 a.m. 5.4 ppb (5) 1.1 ppb (1) 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
 
June 27, 2020, 2 a.m. 8.0 ppb (7) 1.8 ppb (2) N/A 6.0 ppb (6) N/A N/A N/A 0.17 ppb (2) N/A 6.0 μg/m3 (25) 25.0
 
June 27, 2020, 1 a.m. 10.2 ppb (9) 2.4 ppb (2) N/A 8.0 ppb (7) N/A N/A N/A 0.19 ppb (2) N/A 8.0 μg/m3 (33) 33.0
 
June 27, 2020, midnight 13.3 ppb (12) 2.6 ppb (2) N/A 11.0 ppb (10) N/A N/A N/A 0.19 ppb (2) N/A 4.0 μg/m3 (17) 17.0
 
June 26, 2020, 11 p.m. 16.1 ppb (15) 4.6 ppb (4) N/A 12.0 ppb (11) N/A N/A N/A 0.24 ppb (3) N/A 5.0 μg/m3 (21) 21.0
 
June 26, 2020, 10 p.m. 49.0 ppb (45) 21.9 ppb (20) N/A 27.0 ppb (25) N/A N/A N/A 0.63 ppb (7) N/A 7.0 μg/m3 (29) 45.0
 
June 26, 2020, 9 p.m. 52.7 ppb (49) 29.0 ppb (27) N/A 24.0 ppb (22) N/A N/A N/A 0.58 ppb (6) N/A 10.0 μg/m3 (42) 49.0
 
June 26, 2020, 8 p.m. 50.6 ppb (47) 28.8 ppb (27) N/A 22.0 ppb (20) N/A N/A N/A 0.48 ppb (5) N/A 10.0 μg/m3 (42) 47.0
 
June 26, 2020, 7 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
 
June 26, 2020, 6 p.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 8.0 μg/m3 (33) 33.0
 
June 26, 2020, 5 p.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 8.0 μg/m3 (33) 33.0
 
June 26, 2020, 4 p.m. 74.5 ppb (72) 56.3 ppb (52) N/A 18.0 ppb (17) N/A N/A N/A 0.39 ppb (4) N/A 11.0 μg/m3 (46) 72.0
 
June 26, 2020, 3 p.m. 86.3 ppb (84) 63.9 ppb (61) N/A 22.0 ppb (20) N/A N/A N/A 0.45 ppb (5) N/A 10.0 μg/m3 (42) 84.0
 
June 26, 2020, 2 p.m. 55.2 ppb (51) 40.9 ppb (38) N/A 14.0 ppb (13) N/A N/A N/A 0.28 ppb (3) N/A 4.0 μg/m3 (17) 51.0
 
June 26, 2020, 1 p.m. 128.6 ppb (105) 103.8 ppb (101) N/A 25.0 ppb (23) N/A N/A N/A 0.58 ppb (6) N/A 9.0 μg/m3 (38) 105.0
 
June 26, 2020, noon 83.5 ppb (81) 61.6 ppb (58) N/A 22.0 ppb (20) N/A N/A N/A 0.58 ppb (6) N/A 14.0 μg/m3 (54) 81.0
 
June 26, 2020, 11 a.m. 8.5 ppb (8) 3.8 ppb (4) N/A 5.0 ppb (5) N/A N/A N/A N/A N/A 2.0 μg/m3 (8) 8.0
 
June 26, 2020, 10 a.m. 4.4 ppb (4) 0.8 ppb (1) N/A 4.0 ppb (4) N/A N/A N/A N/A N/A 1.0 μg/m3 (4) 4.0
 
June 26, 2020, 9 a.m. 3.3 ppb (3) 0.2 ppb (0) N/A 3.0 ppb (3) N/A N/A N/A N/A N/A 0.0 μg/m3 (0) 3.0
 
June 26, 2020, 8 a.m. 2.8 ppb (3) 0.2 ppb (0) N/A 3.0 ppb (3) N/A N/A N/A N/A N/A 2.0 μg/m3 (8) 8.0
 
June 26, 2020, 7 a.m. 5.6 ppb (5) 1.0 ppb (1) N/A 5.0 ppb (5) N/A N/A N/A N/A N/A 4.0 μg/m3 (17) 17.0
 
June 26, 2020, 6 a.m. 10.0 ppb (9) 1.6 ppb (1) N/A 8.0 ppb (7) N/A N/A N/A N/A N/A 6.0 μg/m3 (25) 25.0
 
June 26, 2020, 5 a.m. 20.7 ppb (19) 7.5 ppb (7) N/A 13.0 ppb (12) N/A N/A N/A 0.13 ppb (1) N/A 10.0 μg/m3 (42) 42.0
 
June 26, 2020, 4 a.m. 21.2 ppb (20) 8.8 ppb (8) N/A 12.0 ppb (11) N/A N/A N/A 0.0 ppb (0) N/A 9.0 μg/m3 (38) 38.0
 
June 26, 2020, 3 a.m. 17.2 ppb (16) 6.8 ppb (6) N/A 10.0 ppb (9) N/A N/A N/A 0.09 ppb (1) N/A 5.0 μg/m3 (21) 21.0
 
June 26, 2020, 2 a.m. 17.3 ppb (16) 8.3 ppb (8) N/A 9.0 ppb (8) N/A N/A N/A 0.15 ppb (2) N/A 5.0 μg/m3 (21) 21.0
 
June 26, 2020, 1 a.m. 21.8 ppb (20) 11.4 ppb (11) N/A 10.0 ppb (9) N/A N/A N/A 0.24 ppb (3) N/A 6.0 μg/m3 (25) 25.0
 
June 26, 2020, midnight 18.2 ppb (17) 9.5 ppb (9) N/A 9.0 ppb (8) N/A N/A N/A 0.12 ppb (1) N/A 3.0 μg/m3 (12) 17.0
 
June 25, 2020, 11 p.m. 36.2 ppb (34) 21.6 ppb (20) N/A 15.0 ppb (14) N/A N/A N/A 0.22 ppb (2) N/A 5.0 μg/m3 (21) 34.0
 
June 25, 2020, 10 p.m. 50.9 ppb (47) 31.4 ppb (29) N/A 20.0 ppb (19) N/A N/A N/A 0.48 ppb (5) N/A 26.0 μg/m3 (80) 80.0
 
June 25, 2020, 9 p.m. 40.2 ppb (37) 26.0 ppb (24) N/A N/A N/A N/A N/A N/A N/A N/A 37.0
 
June 25, 2020, 8 p.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 78.0 μg/m3 (162) 162.0
 
June 25, 2020, 7 p.m. 49.9 ppb (46) 34.4 ppb (32) N/A 15.0 ppb (14) N/A N/A N/A 0.78 ppb (9) N/A 100.0 μg/m3 (173) 173.0
 
June 25, 2020, 6 p.m. 53.5 ppb (50) 37.5 ppb (35) N/A 16.0 ppb (15) N/A N/A N/A 0.6 ppb (7) N/A 70.0 μg/m3 (158) 158.0
 
June 25, 2020, 5 p.m. 51.8 ppb (48) 37.9 ppb (35) N/A 14.0 ppb (13) N/A N/A N/A 0.73 ppb (8) N/A 99.0 μg/m3 (173) 173.0
 
June 25, 2020, 4 p.m. 64.0 ppb (61) 47.6 ppb (44) N/A 16.0 ppb (15) N/A N/A N/A 1.35 ppb (15) N/A 233.0 μg/m3 (282) 282.0
 
June 25, 2020, 3 p.m. 79.1 ppb (77) 60.4 ppb (57) N/A 19.0 ppb (18) N/A N/A N/A 1.49 ppb (17) N/A 164.0 μg/m3 (214) 214.0
 
June 25, 2020, 2 p.m. 111.6 ppb (102) 85.1 ppb (83) N/A 26.0 ppb (24) N/A N/A N/A 1.19 ppb (13) N/A 113.0 μg/m3 (180) 180.0
 
June 25, 2020, 1 p.m. 129.4 ppb (105) 103.4 ppb (100) N/A 26.0 ppb (24) N/A N/A N/A 1.09 ppb (12) N/A 204.0 μg/m3 (254) 254.0
 
June 25, 2020, noon 93.5 ppb (92) 72.0 ppb (69) N/A 22.0 ppb (20) N/A N/A N/A 2.09 ppb (23) N/A 260.0 μg/m3 (310) 310.0
 
June 25, 2020, 11 a.m. 11.5 ppb (11) 5.5 ppb (5) N/A 6.0 ppb (6) N/A N/A N/A 0.35 ppb (4) N/A 1.0 μg/m3 (4) 11.0
 
June 25, 2020, 10 a.m. 34.2 ppb (32) 16.1 ppb (15) N/A 18.0 ppb (17) N/A N/A N/A 0.19 ppb (2) N/A 4.0 μg/m3 (17) 32.0
 
June 25, 2020, 9 a.m. 18.9 ppb (18) 7.4 ppb (7) N/A 11.0 ppb (10) N/A N/A N/A 0.25 ppb (3) N/A 6.0 μg/m3 (25) 25.0
 
June 25, 2020, 8 a.m. 22.7 ppb (21) 7.3 ppb (7) N/A 15.0 ppb (14) N/A N/A N/A 0.28 ppb (3) N/A 6.0 μg/m3 (25) 25.0
 
June 25, 2020, 7 a.m. 12.4 ppb (11) 3.5 ppb (3) N/A 9.0 ppb (8) N/A N/A N/A 0.18 ppb (2) N/A 3.0 μg/m3 (12) 12.0
 
June 25, 2020, 6 a.m. 5.1 ppb (5) 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
 
June 25, 2020, 5 a.m. 4.1 ppb (4) 0.4 ppb (0) N/A 4.0 ppb (4) N/A N/A N/A 0.14 ppb (2) N/A 2.0 μg/m3 (8) 8.0
 
June 25, 2020, 4 a.m. 15.7 ppb (15) 6.7 ppb (6) N/A 9.0 ppb (8) N/A N/A N/A 0.29 ppb (3) N/A 6.0 μg/m3 (25) 25.0
 
June 25, 2020, 3 a.m. 23.2 ppb (21) 9.9 ppb (9) N/A 13.0 ppb (12) N/A N/A N/A 0.51 ppb (6) N/A 9.0 μg/m3 (38) 38.0
 
June 25, 2020, 2 a.m. 29.1 ppb (27) 13.1 ppb (12) N/A 16.0 ppb (15) N/A N/A N/A 0.57 ppb (6) N/A 5.0 μg/m3 (21) 27.0
 
June 25, 2020, 1 a.m. 39.5 ppb (37) 19.6 ppb (18) N/A 20.0 ppb (19) N/A N/A N/A 0.46 ppb (5) N/A 7.0 μg/m3 (29) 37.0
 
June 25, 2020, midnight 27.5 ppb (25) 14.3 ppb (13) N/A 13.0 ppb (12) N/A N/A N/A 0.4 ppb (4) N/A 4.0 μg/m3 (17) 25.0
 
June 24, 2020, 11 p.m. 33.4 ppb (31) 21.1 ppb (20) N/A 12.0 ppb (11) N/A N/A N/A 0.44 ppb (5) N/A 4.0 μg/m3 (17) 31.0
 
June 24, 2020, 10 p.m. 38.7 ppb (36) 26.7 ppb (25) N/A 12.0 ppb (11) N/A N/A N/A 0.54 ppb (6) N/A 2.0 μg/m3 (8) 36.0
 
June 24, 2020, 9 p.m. 50.4 ppb (47) 38.6 ppb (36) N/A 12.0 ppb (11) N/A N/A N/A 0.54 ppb (6) N/A 5.0 μg/m3 (21) 47.0
 
June 24, 2020, 8 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
 
June 24, 2020, 7 p.m. 47.2 ppb (44) 34.8 ppb (32) N/A 12.0 ppb (11) N/A N/A N/A N/A N/A 4.0 μg/m3 (17) 44.0
 
June 24, 2020, 6 p.m. 53.5 ppb (50) 39.0 ppb (36) N/A 15.0 ppb (14) N/A N/A N/A N/A N/A 3.0 μg/m3 (12) 50.0
 
June 24, 2020, 5 p.m. 42.4 ppb (39) 30.7 ppb (28) N/A 12.0 ppb (11) N/A N/A N/A N/A N/A 3.0 μg/m3 (12) 39.0
 
June 24, 2020, 4 p.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
 
June 24, 2020, 3 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
 
June 24, 2020, 2 p.m. 61.2 ppb (58) 43.4 ppb (40) N/A 18.0 ppb (17) N/A N/A N/A 0.3 ppb (3) N/A 8.0 μg/m3 (33) 58.0
 
June 24, 2020, 1 p.m. 94.9 ppb (94) 74.8 ppb (72) N/A 20.0 ppb (19) N/A N/A N/A 0.48 ppb (5) N/A 5.0 μg/m3 (21) 94.0
 
June 24, 2020, noon 87.8 ppb (86) 62.7 ppb (59) N/A 25.0 ppb (23) N/A N/A N/A 0.57 ppb (6) N/A 4.0 μg/m3 (17) 86.0
 
June 24, 2020, 11 a.m. 45.5 ppb (42) 25.4 ppb (24) N/A 20.0 ppb (19) N/A N/A N/A 0.25 ppb (3) N/A 4.0 μg/m3 (17) 42.0
 
June 24, 2020, 10 a.m. 32.1 ppb (30) 16.3 ppb (15) N/A 16.0 ppb (15) N/A N/A N/A 0.15 ppb (2) N/A 4.0 μg/m3 (17) 30.0
 
June 24, 2020, 9 a.m. 25.5 ppb (24) 8.3 ppb (8) N/A 17.0 ppb (16) N/A N/A N/A 0.14 ppb (2) N/A 3.0 μg/m3 (12) 24.0
 
June 24, 2020, 8 a.m. 28.2 ppb (26) 11.9 ppb (11) N/A 16.0 ppb (15) N/A N/A N/A 0.07 ppb (1) N/A 4.0 μg/m3 (17) 26.0
 
June 24, 2020, 7 a.m. 38.8 ppb (36) 20.1 ppb (19) N/A 19.0 ppb (18) N/A N/A N/A 0.14 ppb (2) N/A 1.0 μg/m3 (4) 36.0
 
June 24, 2020, 6 a.m. 45.0 ppb (42) 26.5 ppb (25) N/A 19.0 ppb (18) N/A N/A N/A 0.26 ppb (3) N/A 0.0 μg/m3 (0) 42.0
 
June 24, 2020, 5 a.m. 12.1 ppb (11) 4.9 ppb (5) N/A 7.0 ppb (6) N/A N/A N/A 0.11 ppb (1) N/A 1.0 μg/m3 (4) 11.0
 
June 24, 2020, 4 a.m. 5.5 ppb (5) 1.0 ppb (1) N/A 5.0 ppb (5) N/A N/A N/A 0.06 ppb (1) N/A 1.0 μg/m3 (4) 5.0
 
June 24, 2020, 3 a.m. 12.2 ppb (11) 6.9 ppb (6) N/A 5.0 ppb (5) N/A N/A N/A 0.21 ppb (2) N/A 2.0 μg/m3 (8) 11.0
 
June 24, 2020, 2 a.m. 21.4 ppb (20) 13.8 ppb (13) N/A 8.0 ppb (7) N/A N/A N/A 0.29 ppb (3) N/A 1.0 μg/m3 (4) 20.0
 
June 24, 2020, 1 a.m. 28.9 ppb (27) 19.8 ppb (18) N/A 9.0 ppb (8) N/A N/A N/A 0.38 ppb (4) N/A 1.0 μg/m3 (4) 27.0
 
June 24, 2020, midnight 6.5 ppb (6) 3.0 ppb (3) N/A 4.0 ppb (4) N/A N/A N/A 0.06 ppb (1) N/A 1.0 μg/m3 (4) 6.0
 
June 23, 2020, 11 p.m. 17.5 ppb (16) 9.9 ppb (9) N/A 8.0 ppb (7) N/A N/A N/A 0.24 ppb (3) N/A -1.0 μg/m3 (0) 16.0
 
June 23, 2020, 10 p.m. 19.3 ppb (18) 11.1 ppb (10) N/A 8.0 ppb (7) N/A N/A N/A 0.27 ppb (3) N/A 3.0 μg/m3 (12) 18.0