AQSQID: 530330017

Site Name: North Bend-North Bend Way (So)

Location: King Co, WA

Reporting: True, Located: True

Current AQI: 9.0

King Co WA, US: 47.4902, -121.772697

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
May 21, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 12.0 ppb (9) N/A N/A 1.1 μg/m3 (5) 9.0
 
May 21, 2019, noon N/A N/A N/A N/A N/A N/A 10.0 ppb (8) N/A N/A 0.7 μg/m3 (3) 8.0
 
May 21, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 14.0 ppb (11) N/A N/A 0.7 μg/m3 (3) 11.0
 
May 21, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 0.7 μg/m3 (3) 3.0
 
May 21, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A 19.0 ppb (15) N/A N/A 0.8 μg/m3 (3) 15.0
 
May 21, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 19.0 ppb (15) N/A N/A 0.9 μg/m3 (4) 15.0
 
May 21, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (19) N/A N/A 0.8 μg/m3 (3) 19.0
 
May 21, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (21) N/A N/A 1.1 μg/m3 (5) 21.0
 
May 21, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (18) N/A N/A 1.3 μg/m3 (5) 18.0
 
May 21, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (20) N/A N/A 1.3 μg/m3 (5) 20.0
 
May 21, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (22) N/A N/A 1.3 μg/m3 (5) 22.0
 
May 21, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (19) N/A N/A 1.9 μg/m3 (8) 19.0
 
May 21, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (22) N/A N/A 1.9 μg/m3 (8) 22.0
 
May 21, 2019, midnight N/A N/A N/A N/A N/A N/A 32.0 ppb (25) N/A N/A 1.2 μg/m3 (5) 25.0
 
May 20, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) N/A N/A 1.4 μg/m3 (6) 26.0
 
May 20, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) N/A N/A 0.7 μg/m3 (3) 25.0
 
May 20, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (22) N/A N/A 1.4 μg/m3 (6) 22.0
 
May 20, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) N/A N/A 2.0 μg/m3 (8) 24.0
 
May 20, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (25) N/A N/A 0.7 μg/m3 (3) 25.0
 
May 20, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (25) N/A N/A 0.6 μg/m3 (2) 25.0
 
May 20, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) N/A N/A 0.7 μg/m3 (3) 23.0
 
May 20, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (22) N/A N/A 1.0 μg/m3 (4) 22.0
 
May 20, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (21) N/A N/A 1.1 μg/m3 (5) 21.0
 
May 20, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) N/A N/A 0.9 μg/m3 (4) 23.0
 
May 20, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (21) N/A N/A 1.3 μg/m3 (5) 21.0
 
May 20, 2019, noon N/A N/A N/A N/A N/A N/A 29.0 ppb (22) N/A N/A 1.3 μg/m3 (5) 22.0
 
May 20, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (19) N/A N/A 1.2 μg/m3 (5) 19.0
 
May 20, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A 18.0 ppb (14) N/A N/A 2.8 μg/m3 (12) 14.0
 
May 20, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A 18.0 ppb (14) N/A N/A 3.5 μg/m3 (15) 15.0
 
May 20, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (16) N/A N/A 3.0 μg/m3 (12) 16.0
 
May 20, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (20) N/A N/A 3.1 μg/m3 (13) 20.0
 
May 20, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (19) N/A N/A 3.0 μg/m3 (12) 19.0
 
May 20, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) N/A N/A 2.7 μg/m3 (11) 24.0
 
May 20, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A N/A 2.7 μg/m3 (11) 28.0
 
May 20, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) N/A N/A 3.2 μg/m3 (13) 25.0
 
May 20, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (34) N/A N/A 2.7 μg/m3 (11) 34.0
 
May 20, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (35) N/A N/A 2.5 μg/m3 (10) 35.0
 
May 20, 2019, midnight N/A N/A N/A N/A N/A N/A 43.0 ppb (33) N/A N/A 2.7 μg/m3 (11) 33.0
 
May 19, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (32) N/A N/A 2.4 μg/m3 (10) 32.0
 
May 19, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (32) N/A N/A 2.2 μg/m3 (9) 32.0
 
May 19, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (30) N/A N/A 2.3 μg/m3 (10) 30.0
 
May 19, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A N/A 2.2 μg/m3 (9) 28.0
 
May 19, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) N/A N/A 2.5 μg/m3 (10) 28.0
 
May 19, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) N/A N/A 3.0 μg/m3 (12) 23.0
 
May 19, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (20) N/A N/A 3.1 μg/m3 (13) 20.0
 
May 19, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (15) N/A N/A 3.3 μg/m3 (14) 15.0
 
May 19, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 13.0 ppb (10) N/A N/A 2.7 μg/m3 (11) 11.0
 
May 19, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 10.0 ppb (8) N/A N/A 2.8 μg/m3 (12) 12.0
 
May 19, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 6.0 ppb (5) N/A N/A 3.4 μg/m3 (14) 14.0
 
May 19, 2019, noon N/A N/A N/A N/A N/A N/A 6.0 ppb (5) N/A N/A 3.3 μg/m3 (14) 14.0
 
May 19, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 6.0 ppb (5) N/A N/A 5.1 μg/m3 (21) 21.0
 
May 19, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 5.1 μg/m3 (21) 21.0
 
May 19, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A 11.0 ppb (8) N/A N/A 4.5 μg/m3 (19) 19.0
 
May 19, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 16.0 ppb (12) N/A N/A 4.1 μg/m3 (17) 17.0
 
May 19, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 12.0 ppb (9) N/A N/A 4.6 μg/m3 (19) 19.0
 
May 19, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 13.0 ppb (10) N/A N/A 4.7 μg/m3 (20) 20.0
 
May 19, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 18.0 ppb (14) N/A N/A 3.0 μg/m3 (12) 14.0
 
May 19, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (16) N/A N/A 3.3 μg/m3 (14) 16.0
 
May 19, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (25) N/A N/A 2.3 μg/m3 (10) 25.0
 
May 19, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (32) N/A N/A 2.1 μg/m3 (9) 32.0
 
May 19, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (35) N/A N/A 1.6 μg/m3 (7) 35.0
 
May 19, 2019, midnight N/A N/A N/A N/A N/A N/A 44.0 ppb (34) N/A N/A 1.2 μg/m3 (5) 34.0
 
May 18, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (31) N/A N/A 0.8 μg/m3 (3) 31.0
 
May 18, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (30) N/A N/A 0.7 μg/m3 (3) 30.0
 
May 18, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (31) N/A N/A 0.7 μg/m3 (3) 31.0
 
May 18, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (31) N/A N/A 0.7 μg/m3 (3) 31.0
 
May 18, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (30) N/A N/A 0.7 μg/m3 (3) 30.0
 
May 18, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) N/A N/A 0.9 μg/m3 (4) 28.0
 
May 18, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) N/A N/A 1.0 μg/m3 (4) 25.0
 
May 18, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (19) N/A N/A 1.0 μg/m3 (4) 19.0
 
May 18, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 19.0 ppb (15) N/A N/A 1.3 μg/m3 (5) 15.0
 
May 18, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 16.0 ppb (12) N/A N/A 1.5 μg/m3 (6) 12.0
 
May 18, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 10.0 ppb (8) N/A N/A 2.0 μg/m3 (8) 8.0
 
May 18, 2019, noon N/A N/A N/A N/A N/A N/A 8.0 ppb (6) N/A N/A 2.2 μg/m3 (9) 9.0
 
May 18, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 8.0 ppb (6) N/A N/A 2.2 μg/m3 (9) 9.0
 
May 18, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A 8.0 ppb (6) N/A N/A 2.3 μg/m3 (10) 10.0
 
May 18, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A 8.0 ppb (6) N/A N/A 2.7 μg/m3 (11) 11.0
 
May 18, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 10.0 ppb (8) N/A N/A 2.4 μg/m3 (10) 10.0
 
May 18, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 12.0 ppb (9) N/A N/A 2.7 μg/m3 (11) 11.0
 
May 18, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 12.0 ppb (9) N/A N/A 2.7 μg/m3 (11) 11.0
 
May 18, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 13.0 ppb (10) N/A N/A 4.6 μg/m3 (19) 19.0
 
May 18, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 15.0 ppb (12) N/A N/A 5.4 μg/m3 (23) 23.0
 
May 18, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 18.0 ppb (14) N/A N/A 5.2 μg/m3 (22) 22.0
 
May 18, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (22) N/A N/A 2.8 μg/m3 (12) 22.0
 
May 18, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) N/A N/A 2.4 μg/m3 (10) 28.0
 
May 18, 2019, midnight N/A N/A N/A N/A N/A N/A 41.0 ppb (32) N/A N/A 2.2 μg/m3 (9) 32.0
 
May 17, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (33) N/A N/A 2.3 μg/m3 (10) 33.0
 
May 17, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (34) N/A N/A 2.2 μg/m3 (9) 34.0
 
May 17, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 2.2 μg/m3 (9) 9.0
 
May 17, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 1.5 μg/m3 (6) 6.0
 
May 17, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A N/A 1.0 μg/m3 (4) 28.0
 
May 17, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) N/A N/A 1.1 μg/m3 (5) 24.0
 
May 17, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) N/A N/A 0.9 μg/m3 (4) 25.0
 
May 17, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) N/A N/A 0.7 μg/m3 (3) 26.0
 
May 17, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (22) N/A N/A 0.4 μg/m3 (2) 22.0
 
May 17, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) N/A N/A 0.4 μg/m3 (2) 24.0
 
May 17, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) N/A N/A 0.3 μg/m3 (1) 27.0
 
May 17, 2019, noon N/A N/A N/A N/A N/A N/A 31.0 ppb (24) N/A N/A 0.4 μg/m3 (2) 24.0
 
May 17, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (21) N/A N/A 0.3 μg/m3 (1) 21.0
 
May 17, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 0.3 μg/m3 (1) 1.0
 
May 17, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (20) N/A N/A 0.3 μg/m3 (1) 20.0
 
May 17, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (21) N/A N/A 0.2 μg/m3 (1) 21.0
 
May 17, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (19) N/A N/A 0.4 μg/m3 (2) 19.0
 
May 17, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (18) N/A N/A 0.8 μg/m3 (3) 18.0
 
May 17, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (20) N/A N/A 0.9 μg/m3 (4) 20.0
 
May 17, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (20) N/A N/A 1.1 μg/m3 (5) 20.0
 
May 17, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 16.0 ppb (12) N/A N/A 1.6 μg/m3 (7) 12.0
 
May 17, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 17.0 ppb (13) N/A N/A 1.1 μg/m3 (5) 13.0
 
May 17, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 17.0 ppb (13) N/A N/A 1.4 μg/m3 (6) 13.0
 
May 17, 2019, midnight N/A N/A N/A N/A N/A N/A 23.0 ppb (18) N/A N/A 1.3 μg/m3 (5) 18.0
 
May 16, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (19) N/A N/A 1.5 μg/m3 (6) 19.0
 
May 16, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 18.0 ppb (14) N/A N/A 2.6 μg/m3 (11) 14.0
 
May 16, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 12.0 ppb (9) N/A N/A 4.6 μg/m3 (19) 19.0
 
May 16, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 10.0 ppb (8) N/A N/A 3.3 μg/m3 (14) 14.0
 
May 16, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 10.0 ppb (8) N/A N/A 3.1 μg/m3 (13) 13.0
 
May 16, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 9.0 ppb (7) N/A N/A 3.4 μg/m3 (14) 14.0
 
May 16, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 8.0 ppb (6) N/A N/A 2.4 μg/m3 (10) 10.0
 
May 16, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 8.0 ppb (6) N/A N/A 2.1 μg/m3 (9) 9.0
 
May 16, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 8.0 ppb (6) N/A N/A 2.0 μg/m3 (8) 8.0
 
May 16, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 8.0 ppb (6) N/A N/A 2.1 μg/m3 (9) 9.0
 
May 16, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 7.0 ppb (5) N/A N/A 2.3 μg/m3 (10) 10.0
 
May 16, 2019, noon N/A N/A N/A N/A N/A N/A 8.0 ppb (6) N/A N/A 1.8 μg/m3 (8) 8.0
 
May 16, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 8.0 ppb (6) N/A N/A 1.8 μg/m3 (8) 8.0
 
May 16, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A 7.0 ppb (5) N/A N/A 2.7 μg/m3 (11) 11.0
 
May 16, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A 5.0 ppb (4) N/A N/A 2.7 μg/m3 (11) 11.0
 
May 16, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 5.0 ppb (4) N/A N/A 2.4 μg/m3 (10) 10.0
 
May 16, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 6.0 ppb (5) N/A N/A 2.1 μg/m3 (9) 9.0
 
May 16, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 7.0 ppb (5) N/A N/A 2.2 μg/m3 (9) 9.0
 
May 16, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 12.0 ppb (9) N/A N/A 1.9 μg/m3 (8) 9.0
 
May 16, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 18.0 ppb (14) N/A N/A 1.9 μg/m3 (8) 14.0
 
May 16, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (18) N/A N/A 1.8 μg/m3 (8) 18.0
 
May 16, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) N/A N/A 1.2 μg/m3 (5) 23.0
 
May 16, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) N/A N/A 1.0 μg/m3 (4) 28.0
 
May 16, 2019, midnight N/A N/A N/A N/A N/A N/A 39.0 ppb (30) N/A N/A 0.9 μg/m3 (4) 30.0
 
May 15, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (29) N/A N/A 0.8 μg/m3 (3) 29.0
 
May 15, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (29) N/A N/A 0.9 μg/m3 (4) 29.0
 
May 15, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (29) N/A N/A 1.2 μg/m3 (5) 29.0
 
May 15, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (29) N/A N/A 0.8 μg/m3 (3) 29.0
 
May 15, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) N/A N/A 1.3 μg/m3 (5) 23.0
 
May 15, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (20) N/A N/A 1.4 μg/m3 (6) 20.0
 
May 15, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (18) N/A N/A 1.3 μg/m3 (5) 18.0
 
May 15, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (15) N/A N/A 1.1 μg/m3 (5) 15.0
 
May 15, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 19.0 ppb (15) N/A N/A 1.0 μg/m3 (4) 15.0
 
May 15, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 11.0 ppb (8) N/A N/A 1.0 μg/m3 (4) 8.0
 
May 15, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 9.0 ppb (7) N/A N/A 1.2 μg/m3 (5) 7.0
 
May 15, 2019, noon N/A N/A N/A N/A N/A N/A 11.0 ppb (8) N/A N/A 1.5 μg/m3 (6) 8.0
 
May 15, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 17.0 ppb (13) N/A N/A 1.6 μg/m3 (7) 13.0
 
May 15, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A 14.0 ppb (11) N/A N/A 1.7 μg/m3 (7) 11.0
 
May 15, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A 15.0 ppb (12) N/A N/A 1.7 μg/m3 (7) 12.0
 
May 15, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 1.5 μg/m3 (6) 6.0
 
May 15, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 15.0 ppb (12) N/A N/A 2.6 μg/m3 (11) 12.0
 
May 15, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 14.0 ppb (11) N/A N/A 1.5 μg/m3 (6) 11.0
 
May 15, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 12.0 ppb (9) N/A N/A 1.6 μg/m3 (7) 9.0
 
May 15, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 17.0 ppb (13) N/A N/A 1.1 μg/m3 (5) 13.0
 
May 15, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (16) N/A N/A 1.1 μg/m3 (5) 16.0
 
May 15, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (18) N/A N/A 1.0 μg/m3 (4) 18.0
 
May 15, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (21) N/A N/A 0.9 μg/m3 (4) 21.0
 
May 15, 2019, midnight N/A N/A N/A N/A N/A N/A 30.0 ppb (23) N/A N/A 0.7 μg/m3 (3) 23.0
 
May 14, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) N/A N/A 0.6 μg/m3 (2) 25.0
 
May 14, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) N/A N/A 0.8 μg/m3 (3) 26.0
 
May 14, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) N/A N/A 1.3 μg/m3 (5) 25.0
 
May 14, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) N/A N/A 1.2 μg/m3 (5) 25.0
 
May 14, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) N/A N/A 2.5 μg/m3 (10) 24.0
 
May 14, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (18) N/A N/A 5.3 μg/m3 (22) 22.0
 
May 14, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (17) N/A N/A 6.3 μg/m3 (26) 26.0
 
May 14, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (18) N/A N/A 6.6 μg/m3 (28) 28.0
 
May 14, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (19) N/A N/A 6.8 μg/m3 (28) 28.0
 
May 14, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (19) N/A N/A 6.0 μg/m3 (25) 25.0