AQSQID: 060850006

Site Name: San Jose - Knox Ave

Location: San José, CA

Reporting: False, Located: True

Current AQI: None

San José CA, US: 37.338202, -121.849892

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
May 19, 2019, 7 p.m. 4.0 ppb (4) 0.6 ppb (1) N/A 3.0 ppb (3) N/A N/A N/A 0.28 ppb (3) N/A 1.0 μg/m3 (4) 4.0
 
May 19, 2019, 6 p.m. 7.5 ppb (7) 1.0 ppb (1) N/A 7.0 ppb (6) N/A N/A N/A 0.34 ppb (4) N/A 2.0 μg/m3 (8) 8.0
 
May 19, 2019, 5 p.m. 7.6 ppb (7) 1.8 ppb (2) N/A 6.0 ppb (6) N/A N/A N/A 0.35 ppb (4) N/A 1.0 μg/m3 (4) 7.0
 
May 19, 2019, 4 p.m. 7.3 ppb (7) 1.3 ppb (1) N/A 6.0 ppb (6) N/A N/A N/A 0.35 ppb (4) N/A 4.0 μg/m3 (17) 17.0
 
May 19, 2019, 3 p.m. 10.4 ppb (10) 1.5 ppb (1) 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
 
May 19, 2019, 2 p.m. 16.0 ppb (15) 3.0 ppb (3) N/A 13.0 ppb (12) N/A N/A N/A 0.43 ppb (5) N/A 3.0 μg/m3 (12) 15.0
 
May 19, 2019, 1 p.m. 8.6 ppb (8) 0.7 ppb (1) 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
 
May 19, 2019, noon 10.2 ppb (9) 0.7 ppb (1) N/A 9.0 ppb (8) N/A N/A N/A 0.33 ppb (4) N/A 1.0 μg/m3 (4) 9.0
 
May 19, 2019, 11 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
 
May 19, 2019, 10 a.m. 12.2 ppb (11) 2.2 ppb (2) N/A 10.0 ppb (9) N/A N/A N/A 0.33 ppb (4) N/A 2.0 μg/m3 (8) 11.0
 
May 19, 2019, 9 a.m. 9.1 ppb (8) 1.9 ppb (2) N/A 7.0 ppb (6) N/A N/A N/A 0.32 ppb (4) N/A 2.0 μg/m3 (8) 8.0
 
May 19, 2019, 8 a.m. 4.2 ppb (4) 0.7 ppb (1) N/A 4.0 ppb (4) N/A N/A N/A 0.3 ppb (3) N/A 1.0 μg/m3 (4) 4.0
 
May 19, 2019, 7 a.m. 4.9 ppb (5) 0.6 ppb (1) N/A 4.0 ppb (4) N/A N/A N/A 0.3 ppb (3) N/A 0.0 μg/m3 (0) 5.0
 
May 19, 2019, 6 a.m. 5.9 ppb (5) 1.2 ppb (1) N/A 5.0 ppb (5) N/A N/A N/A 0.31 ppb (3) N/A 4.0 μg/m3 (17) 17.0
 
May 19, 2019, 5 a.m. 7.5 ppb (7) 1.3 ppb (1) N/A 6.0 ppb (6) N/A N/A N/A 0.33 ppb (4) N/A 6.0 μg/m3 (25) 25.0
 
May 19, 2019, 4 a.m. 8.3 ppb (8) 1.3 ppb (1) N/A 7.0 ppb (6) N/A N/A N/A 0.34 ppb (4) N/A 2.0 μg/m3 (8) 8.0
 
May 19, 2019, 3 a.m. 6.8 ppb (6) 1.1 ppb (1) N/A 6.0 ppb (6) N/A N/A N/A 0.33 ppb (4) N/A 0.0 μg/m3 (0) 6.0
 
May 19, 2019, 2 a.m. 8.9 ppb (8) 1.8 ppb (2) N/A 7.0 ppb (6) N/A N/A N/A 0.36 ppb (4) N/A 4.0 μg/m3 (17) 17.0
 
May 19, 2019, 1 a.m. 6.5 ppb (6) 1.3 ppb (1) N/A 5.0 ppb (5) N/A N/A N/A 0.34 ppb (4) N/A 5.0 μg/m3 (21) 21.0
 
May 19, 2019, midnight 4.5 ppb (4) 0.6 ppb (1) N/A 4.0 ppb (4) N/A N/A N/A 0.29 ppb (3) N/A 4.0 μg/m3 (17) 17.0
 
May 18, 2019, 11 p.m. 6.2 ppb (6) 1.0 ppb (1) N/A 5.0 ppb (5) N/A N/A N/A 0.31 ppb (3) N/A 2.0 μg/m3 (8) 8.0
 
May 18, 2019, 10 p.m. 6.0 ppb (6) 0.9 ppb (1) N/A 5.0 ppb (5) N/A N/A N/A 0.3 ppb (3) N/A 1.0 μg/m3 (4) 6.0
 
May 18, 2019, 9 p.m. 5.6 ppb (5) 0.7 ppb (1) N/A 5.0 ppb (5) N/A N/A N/A 0.31 ppb (3) N/A 3.0 μg/m3 (12) 12.0
 
May 18, 2019, 8 p.m. 6.5 ppb (6) 0.7 ppb (1) N/A 6.0 ppb (6) N/A N/A N/A 0.32 ppb (4) N/A 4.0 μg/m3 (17) 17.0
 
May 18, 2019, 7 p.m. 19.9 ppb (18) 6.3 ppb (6) N/A 14.0 ppb (13) N/A N/A N/A 0.47 ppb (5) N/A 6.0 μg/m3 (25) 25.0
 
May 18, 2019, 6 p.m. 16.0 ppb (15) 5.3 ppb (5) N/A 11.0 ppb (10) N/A N/A N/A 0.43 ppb (5) N/A 7.0 μg/m3 (29) 29.0
 
May 18, 2019, 5 p.m. 17.1 ppb (16) 6.2 ppb (6) N/A 11.0 ppb (10) N/A N/A N/A 0.45 ppb (5) N/A 4.0 μg/m3 (17) 17.0
 
May 18, 2019, 4 p.m. 20.9 ppb (19) 8.5 ppb (8) N/A 12.0 ppb (11) N/A N/A N/A 0.43 ppb (5) N/A 4.0 μg/m3 (17) 19.0
 
May 18, 2019, 3 p.m. 20.5 ppb (19) 9.8 ppb (9) N/A 11.0 ppb (10) N/A N/A N/A 0.44 ppb (5) N/A 6.0 μg/m3 (25) 25.0
 
May 18, 2019, 2 p.m. 21.1 ppb (20) 9.0 ppb (8) N/A 12.0 ppb (11) N/A N/A N/A 0.47 ppb (5) N/A 8.0 μg/m3 (33) 33.0
 
May 18, 2019, 1 p.m. 27.8 ppb (26) 11.4 ppb (11) N/A 17.0 ppb (16) N/A N/A N/A 0.55 ppb (6) N/A 3.0 μg/m3 (12) 26.0
 
May 18, 2019, noon 16.1 ppb (15) 3.1 ppb (3) N/A 13.0 ppb (12) N/A N/A N/A 0.38 ppb (4) N/A 4.0 μg/m3 (17) 17.0
 
May 18, 2019, 11 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
 
May 18, 2019, 10 a.m. 12.9 ppb (12) 1.1 ppb (1) N/A 12.0 ppb (11) N/A N/A N/A 0.4 ppb (4) N/A 3.0 μg/m3 (12) 12.0
 
May 18, 2019, 9 a.m. 16.5 ppb (15) 3.5 ppb (3) N/A 13.0 ppb (12) N/A N/A N/A 0.45 ppb (5) N/A 4.0 μg/m3 (17) 17.0
 
May 18, 2019, 8 a.m. 15.2 ppb (14) 2.7 ppb (3) N/A 13.0 ppb (12) N/A N/A N/A 0.4 ppb (4) N/A 5.0 μg/m3 (21) 21.0
 
May 18, 2019, 7 a.m. 9.8 ppb (9) 0.2 ppb (0) N/A 10.0 ppb (9) N/A N/A N/A 0.34 ppb (4) N/A 5.0 μg/m3 (21) 21.0
 
May 18, 2019, 6 a.m. 9.4 ppb (9) 0.2 ppb (0) 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
 
May 18, 2019, 5 a.m. 12.9 ppb (12) 1.5 ppb (1) N/A 11.0 ppb (10) N/A N/A N/A 0.4 ppb (4) N/A 7.0 μg/m3 (29) 29.0
 
May 18, 2019, 4 a.m. 12.6 ppb (12) 1.6 ppb (1) N/A 11.0 ppb (10) N/A N/A N/A 0.37 ppb (4) N/A 3.0 μg/m3 (12) 12.0
 
May 18, 2019, 3 a.m. 9.2 ppb (9) 1.1 ppb (1) N/A 8.0 ppb (7) N/A N/A N/A 0.35 ppb (4) N/A 3.0 μg/m3 (12) 12.0
 
May 18, 2019, 2 a.m. 8.4 ppb (8) 1.1 ppb (1) N/A 7.0 ppb (6) N/A N/A N/A 0.35 ppb (4) N/A 4.0 μg/m3 (17) 17.0
 
May 18, 2019, 1 a.m. 10.4 ppb (10) 2.1 ppb (2) N/A 8.0 ppb (7) N/A N/A N/A 0.4 ppb (4) N/A 6.0 μg/m3 (25) 25.0
 
May 18, 2019, midnight 14.6 ppb (14) 3.7 ppb (3) N/A 11.0 ppb (10) N/A N/A N/A 0.42 ppb (5) N/A 6.0 μg/m3 (25) 25.0
 
May 17, 2019, 11 p.m. 12.5 ppb (12) 3.4 ppb (3) N/A 9.0 ppb (8) N/A N/A N/A 0.39 ppb (4) N/A 7.0 μg/m3 (29) 29.0
 
May 17, 2019, 10 p.m. 9.6 ppb (9) 2.1 ppb (2) N/A 8.0 ppb (7) N/A N/A N/A 0.34 ppb (4) N/A 8.0 μg/m3 (33) 33.0
 
May 17, 2019, 9 p.m. 16.3 ppb (15) 4.9 ppb (5) N/A 11.0 ppb (10) N/A N/A N/A 0.4 ppb (4) N/A 16.0 μg/m3 (59) 59.0
 
May 17, 2019, 8 p.m. 18.3 ppb (17) 5.9 ppb (5) N/A 12.0 ppb (11) N/A N/A N/A 0.4 ppb (4) N/A 9.0 μg/m3 (38) 38.0
 
May 17, 2019, 7 p.m. 20.8 ppb (19) 6.4 ppb (6) N/A 14.0 ppb (13) N/A N/A N/A 0.41 ppb (5) N/A 8.0 μg/m3 (33) 33.0
 
May 17, 2019, 6 p.m. 15.2 ppb (14) 3.8 ppb (4) N/A 11.0 ppb (10) N/A N/A N/A 0.37 ppb (4) N/A 12.0 μg/m3 (50) 50.0
 
May 17, 2019, 5 p.m. 11.2 ppb (10) 2.4 ppb (2) N/A 9.0 ppb (8) N/A N/A N/A 0.34 ppb (4) N/A 7.0 μg/m3 (29) 29.0
 
May 17, 2019, 4 p.m. 10.2 ppb (9) 1.5 ppb (1) N/A 9.0 ppb (8) N/A N/A N/A 0.34 ppb (4) N/A 8.0 μg/m3 (33) 33.0
 
May 17, 2019, 3 p.m. 13.2 ppb (12) 1.4 ppb (1) N/A 12.0 ppb (11) N/A N/A N/A 0.38 ppb (4) N/A 6.0 μg/m3 (25) 25.0
 
May 17, 2019, 2 p.m. 39.8 ppb (37) 14.8 ppb (14) N/A 25.0 ppb (23) N/A N/A N/A 0.51 ppb (6) N/A 5.0 μg/m3 (21) 37.0
 
May 17, 2019, 1 p.m. 34.5 ppb (32) 8.8 ppb (8) N/A 26.0 ppb (24) N/A N/A N/A 0.53 ppb (6) N/A 5.0 μg/m3 (21) 32.0
 
May 17, 2019, noon 27.7 ppb (26) 7.1 ppb (7) N/A 21.0 ppb (19) N/A N/A N/A 0.45 ppb (5) N/A 7.0 μg/m3 (29) 29.0
 
May 17, 2019, 11 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
 
May 17, 2019, 10 a.m. 13.5 ppb (12) 2.1 ppb (2) N/A 11.0 ppb (10) N/A N/A N/A 0.27 ppb (3) N/A 7.0 μg/m3 (29) 29.0
 
May 17, 2019, 9 a.m. 8.3 ppb (8) 1.1 ppb (1) N/A 7.0 ppb (6) N/A N/A N/A 0.26 ppb (3) N/A 6.0 μg/m3 (25) 25.0
 
May 17, 2019, 8 a.m. 9.8 ppb (9) 1.8 ppb (2) N/A 8.0 ppb (7) N/A N/A N/A 0.29 ppb (3) N/A 7.0 μg/m3 (29) 29.0
 
May 17, 2019, 7 a.m. 14.3 ppb (13) 2.9 ppb (3) N/A 11.0 ppb (10) N/A N/A N/A 0.33 ppb (4) N/A 7.0 μg/m3 (29) 29.0
 
May 17, 2019, 6 a.m. 15.6 ppb (14) 3.5 ppb (3) N/A 12.0 ppb (11) N/A N/A N/A 0.4 ppb (4) N/A 6.0 μg/m3 (25) 25.0
 
May 17, 2019, 5 a.m. 14.2 ppb (13) 3.6 ppb (3) 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
 
May 17, 2019, 4 a.m. 18.2 ppb (17) 4.3 ppb (4) N/A 14.0 ppb (13) N/A N/A N/A 0.46 ppb (5) N/A 12.0 μg/m3 (50) 50.0
 
May 17, 2019, 3 a.m. 19.1 ppb (18) 4.8 ppb (4) N/A 14.0 ppb (13) N/A N/A N/A 0.45 ppb (5) N/A 6.0 μg/m3 (25) 25.0
 
May 17, 2019, 2 a.m. 15.1 ppb (14) 4.5 ppb (4) N/A 11.0 ppb (10) N/A N/A N/A 0.42 ppb (5) N/A 7.0 μg/m3 (29) 29.0
 
May 17, 2019, 1 a.m. 13.6 ppb (13) 4.3 ppb (4) N/A 9.0 ppb (8) N/A N/A N/A 0.38 ppb (4) N/A 7.0 μg/m3 (29) 29.0
 
May 17, 2019, midnight 15.2 ppb (14) 5.1 ppb (5) N/A 10.0 ppb (9) N/A N/A N/A 0.41 ppb (5) N/A 7.0 μg/m3 (29) 29.0
 
May 16, 2019, 11 p.m. 18.2 ppb (17) 6.3 ppb (6) N/A 12.0 ppb (11) N/A N/A N/A 0.45 ppb (5) N/A 7.0 μg/m3 (29) 29.0
 
May 16, 2019, 10 p.m. 18.4 ppb (17) 5.8 ppb (5) N/A 13.0 ppb (12) N/A N/A N/A 0.46 ppb (5) N/A 3.0 μg/m3 (12) 17.0
 
May 16, 2019, 9 p.m. 19.5 ppb (18) 6.1 ppb (6) N/A 13.0 ppb (12) N/A N/A N/A 0.43 ppb (5) N/A 4.0 μg/m3 (17) 18.0
 
May 16, 2019, 8 p.m. 20.1 ppb (19) 8.0 ppb (7) N/A 12.0 ppb (11) N/A N/A N/A 0.42 ppb (5) N/A 3.0 μg/m3 (12) 19.0
 
May 16, 2019, 7 p.m. 23.7 ppb (22) 8.1 ppb (8) N/A 16.0 ppb (15) N/A N/A N/A 0.44 ppb (5) N/A 4.0 μg/m3 (17) 22.0
 
May 16, 2019, 6 p.m. 22.3 ppb (21) 7.8 ppb (7) N/A 15.0 ppb (14) N/A N/A N/A 0.39 ppb (4) N/A 4.0 μg/m3 (17) 21.0
 
May 16, 2019, 5 p.m. 14.1 ppb (13) 3.0 ppb (3) N/A 11.0 ppb (10) N/A N/A N/A 0.35 ppb (4) N/A 5.0 μg/m3 (21) 21.0
 
May 16, 2019, 4 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
 
May 16, 2019, 3 p.m. 17.3 ppb (16) 3.8 ppb (4) N/A 14.0 ppb (13) N/A N/A N/A 0.36 ppb (4) N/A 7.0 μg/m3 (29) 29.0
 
May 16, 2019, 2 p.m. 30.1 ppb (28) 7.0 ppb (6) N/A 23.0 ppb (21) N/A N/A N/A 0.51 ppb (6) N/A 8.0 μg/m3 (33) 33.0
 
May 16, 2019, 1 p.m. 21.8 ppb (20) 2.7 ppb (3) N/A 19.0 ppb (18) N/A N/A N/A 0.47 ppb (5) N/A 5.0 μg/m3 (21) 21.0
 
May 16, 2019, noon 22.9 ppb (21) 5.2 ppb (5) N/A 18.0 ppb (17) N/A N/A N/A 0.4 ppb (4) N/A 5.0 μg/m3 (21) 21.0
 
May 16, 2019, 11 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
 
May 16, 2019, 10 a.m. 15.8 ppb (15) 2.3 ppb (2) N/A 14.0 ppb (13) N/A N/A N/A 0.29 ppb (3) N/A 5.0 μg/m3 (21) 21.0
 
May 16, 2019, 9 a.m. 11.6 ppb (11) 1.7 ppb (2) N/A 10.0 ppb (9) N/A N/A N/A 0.27 ppb (3) N/A 3.0 μg/m3 (12) 12.0
 
May 16, 2019, 8 a.m. 4.9 ppb (5) 0.5 ppb (0) N/A 4.0 ppb (4) N/A N/A N/A 0.24 ppb (3) N/A 3.0 μg/m3 (12) 12.0
 
May 16, 2019, 7 a.m. 5.8 ppb (5) 0.6 ppb (1) N/A 5.0 ppb (5) N/A N/A N/A 0.26 ppb (3) N/A 2.0 μg/m3 (8) 8.0
 
May 16, 2019, 6 a.m. 8.2 ppb (8) 2.0 ppb (2) N/A 6.0 ppb (6) N/A N/A N/A 0.28 ppb (3) N/A 2.0 μg/m3 (8) 8.0
 
May 16, 2019, 5 a.m. 6.7 ppb (6) 1.5 ppb (1) N/A 5.0 ppb (5) N/A N/A N/A 0.29 ppb (3) N/A 3.0 μg/m3 (12) 12.0
 
May 16, 2019, 4 a.m. 8.7 ppb (8) 2.6 ppb (2) N/A 6.0 ppb (6) N/A N/A N/A 0.32 ppb (4) N/A 0.0 μg/m3 (0) 8.0
 
May 16, 2019, 3 a.m. 9.3 ppb (9) 2.1 ppb (2) N/A 7.0 ppb (6) N/A N/A N/A 0.34 ppb (4) N/A 1.0 μg/m3 (4) 9.0
 
May 16, 2019, 2 a.m. 10.5 ppb (10) 2.9 ppb (3) 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
 
May 16, 2019, 1 a.m. 11.8 ppb (11) 4.1 ppb (4) N/A 8.0 ppb (7) N/A N/A N/A 0.35 ppb (4) N/A 6.0 μg/m3 (25) 25.0
 
May 16, 2019, midnight 11.0 ppb (10) 3.1 ppb (3) N/A 8.0 ppb (7) N/A N/A N/A 0.35 ppb (4) N/A 7.0 μg/m3 (29) 29.0
 
May 15, 2019, 11 p.m. 11.7 ppb (11) 3.7 ppb (3) N/A 8.0 ppb (7) N/A N/A N/A 0.36 ppb (4) N/A 6.0 μg/m3 (25) 25.0
 
May 15, 2019, 10 p.m. 16.0 ppb (15) 6.4 ppb (6) N/A 10.0 ppb (9) N/A N/A N/A 0.4 ppb (4) N/A 6.0 μg/m3 (25) 25.0
 
May 15, 2019, 9 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
 
May 15, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 12.0 μg/m3 (50) 50.0
 
May 15, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 11.0 μg/m3 (46) 46.0
 
May 15, 2019, 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
 
May 15, 2019, 5 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
 
May 15, 2019, 4 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
 
May 15, 2019, 3 p.m. 14.8 ppb (14) 4.5 ppb (4) N/A 10.0 ppb (9) N/A N/A N/A 0.46 ppb (5) N/A 5.0 μg/m3 (21) 21.0
 
May 15, 2019, 2 p.m. 22.1 ppb (20) 7.7 ppb (7) N/A 14.0 ppb (13) N/A N/A N/A 0.5 ppb (6) N/A 5.0 μg/m3 (21) 21.0
 
May 15, 2019, 1 p.m. 34.1 ppb (32) 15.9 ppb (15) N/A 18.0 ppb (17) N/A N/A N/A 0.55 ppb (6) N/A 5.0 μg/m3 (21) 32.0
 
May 15, 2019, noon 19.6 ppb (18) 6.1 ppb (6) N/A 14.0 ppb (13) N/A N/A N/A 0.48 ppb (5) N/A 4.0 μg/m3 (17) 18.0
 
May 15, 2019, 11 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
 
May 15, 2019, 10 a.m. 9.1 ppb (8) 1.5 ppb (1) N/A 8.0 ppb (7) N/A N/A N/A 0.38 ppb (4) N/A 3.0 μg/m3 (12) 12.0
 
May 15, 2019, 9 a.m. 11.1 ppb (10) 2.0 ppb (2) N/A 9.0 ppb (8) N/A N/A N/A 0.4 ppb (4) N/A 3.0 μg/m3 (12) 12.0
 
May 15, 2019, 8 a.m. 6.7 ppb (6) 0.6 ppb (1) N/A 6.0 ppb (6) N/A N/A N/A 0.37 ppb (4) N/A 1.0 μg/m3 (4) 6.0
 
May 15, 2019, 7 a.m. 6.3 ppb (6) 0.5 ppb (0) N/A 6.0 ppb (6) N/A N/A N/A 0.43 ppb (5) N/A 0.0 μg/m3 (0) 6.0
 
May 15, 2019, 6 a.m. 8.4 ppb (8) 0.9 ppb (1) N/A 8.0 ppb (7) N/A N/A N/A 0.42 ppb (5) N/A 2.0 μg/m3 (8) 8.0
 
May 15, 2019, 5 a.m. 10.6 ppb (10) 1.3 ppb (1) N/A 9.0 ppb (8) N/A N/A N/A 0.45 ppb (5) N/A 4.0 μg/m3 (17) 17.0
 
May 15, 2019, 4 a.m. 18.0 ppb (17) 3.8 ppb (4) N/A 14.0 ppb (13) N/A N/A N/A 0.56 ppb (6) N/A 3.0 μg/m3 (12) 17.0
 
May 15, 2019, 3 a.m. 10.6 ppb (10) 1.3 ppb (1) N/A 9.0 ppb (8) N/A N/A N/A 0.45 ppb (5) N/A 2.0 μg/m3 (8) 10.0
 
May 15, 2019, 2 a.m. 12.5 ppb (12) 3.0 ppb (3) N/A 10.0 ppb (9) N/A N/A N/A 0.48 ppb (5) N/A 1.0 μg/m3 (4) 12.0
 
May 15, 2019, 1 a.m. 14.4 ppb (13) 3.7 ppb (3) N/A 11.0 ppb (10) N/A N/A N/A 0.49 ppb (5) N/A 3.0 μg/m3 (12) 13.0
 
May 15, 2019, midnight 15.7 ppb (15) 4.1 ppb (4) N/A 12.0 ppb (11) N/A N/A N/A 0.51 ppb (6) N/A 6.0 μg/m3 (25) 25.0
 
May 14, 2019, 11 p.m. 17.2 ppb (16) 4.9 ppb (5) N/A 12.0 ppb (11) N/A N/A N/A 0.53 ppb (6) N/A 7.0 μg/m3 (29) 29.0
 
May 14, 2019, 10 p.m. 18.1 ppb (17) 5.5 ppb (5) N/A 13.0 ppb (12) N/A N/A N/A 0.51 ppb (6) N/A 3.0 μg/m3 (12) 17.0
 
May 14, 2019, 9 p.m. 18.5 ppb (17) 5.6 ppb (5) N/A 13.0 ppb (12) N/A N/A N/A 0.53 ppb (6) N/A 1.0 μg/m3 (4) 17.0
 
May 14, 2019, 8 p.m. 12.8 ppb (12) 2.4 ppb (2) N/A 10.0 ppb (9) N/A N/A N/A 0.5 ppb (6) N/A 4.0 μg/m3 (17) 17.0
 
May 14, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A
May 14, 2019, 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
 
May 14, 2019, 5 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
 
May 14, 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
 
May 14, 2019, 3 p.m. 14.1 ppb (13) 3.7 ppb (3) N/A 10.0 ppb (9) N/A N/A N/A 0.45 ppb (5) N/A 4.0 μg/m3 (17) 17.0
 
May 14, 2019, 2 p.m. 11.5 ppb (11) 2.1 ppb (2) N/A 9.0 ppb (8) N/A N/A N/A 0.44 ppb (5) N/A 6.0 μg/m3 (25) 25.0
 
May 14, 2019, 1 p.m. 10.8 ppb (10) 1.8 ppb (2) N/A 9.0 ppb (8) N/A N/A N/A 0.45 ppb (5) N/A 6.0 μg/m3 (25) 25.0
 
May 14, 2019, noon 7.2 ppb (7) 0.8 ppb (1) N/A 6.0 ppb (6) N/A N/A N/A 0.41 ppb (5) N/A 6.0 μg/m3 (25) 25.0
 
May 14, 2019, 11 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
 
May 14, 2019, 10 a.m. 4.4 ppb (4) 0.4 ppb (0) N/A 4.0 ppb (4) N/A N/A N/A 0.36 ppb (4) N/A 7.0 μg/m3 (29) 29.0
 
May 14, 2019, 9 a.m. 3.9 ppb (4) 0.4 ppb (0) N/A 4.0 ppb (4) N/A N/A N/A 0.36 ppb (4) N/A 4.0 μg/m3 (17) 17.0
 
May 14, 2019, 8 a.m. 3.3 ppb (3) 0.2 ppb (0) N/A 3.0 ppb (3) N/A N/A N/A 0.36 ppb (4) N/A 3.0 μg/m3 (12) 12.0
 
May 14, 2019, 7 a.m. 3.8 ppb (4) 0.2 ppb (0) N/A 4.0 ppb (4) N/A N/A N/A 0.38 ppb (4) N/A 5.0 μg/m3 (21) 21.0
 
May 14, 2019, 6 a.m. 7.2 ppb (7) 0.7 ppb (1) N/A 6.0 ppb (6) N/A N/A N/A 0.42 ppb (5) N/A 8.0 μg/m3 (33) 33.0
 
May 14, 2019, 5 a.m. 12.1 ppb (11) 2.3 ppb (2) N/A 10.0 ppb (9) N/A N/A N/A 0.48 ppb (5) N/A 5.0 μg/m3 (21) 21.0
 
May 14, 2019, 4 a.m. 10.0 ppb (9) 1.9 ppb (2) N/A 8.0 ppb (7) N/A N/A N/A 0.48 ppb (5) N/A 2.0 μg/m3 (8) 9.0
 
May 14, 2019, 3 a.m. 12.6 ppb (12) 2.7 ppb (3) N/A 10.0 ppb (9) N/A N/A N/A 0.52 ppb (6) N/A 3.0 μg/m3 (12) 12.0
 
May 14, 2019, 2 a.m. 15.5 ppb (14) 4.4 ppb (4) N/A 11.0 ppb (10) N/A N/A N/A 0.57 ppb (6) N/A 4.0 μg/m3 (17) 17.0
 
May 14, 2019, 1 a.m. 15.1 ppb (14) 4.5 ppb (4) N/A 11.0 ppb (10) N/A N/A N/A 0.56 ppb (6) N/A 6.0 μg/m3 (25) 25.0
 
May 14, 2019, midnight 16.2 ppb (15) 4.8 ppb (4) N/A 11.0 ppb (10) N/A N/A N/A 0.59 ppb (7) N/A 7.0 μg/m3 (29) 29.0
 
May 13, 2019, 11 p.m. 16.2 ppb (15) 4.2 ppb (4) N/A 12.0 ppb (11) N/A N/A N/A 0.58 ppb (6) N/A 9.0 μg/m3 (38) 38.0
 
May 13, 2019, 10 p.m. 14.8 ppb (14) 3.7 ppb (3) N/A 11.0 ppb (10) N/A N/A N/A 0.55 ppb (6) N/A 4.0 μg/m3 (17) 17.0
 
May 13, 2019, 9 p.m. 19.9 ppb (18) 6.1 ppb (6) N/A 14.0 ppb (13) N/A N/A N/A 0.57 ppb (6) N/A 5.0 μg/m3 (21) 21.0
 
May 13, 2019, 8 p.m. 19.7 ppb (18) 6.5 ppb (6) N/A 13.0 ppb (12) N/A N/A N/A 0.52 ppb (6) N/A 5.0 μg/m3 (21) 21.0
 
May 13, 2019, 7 p.m. 18.1 ppb (17) 6.5 ppb (6) N/A 12.0 ppb (11) N/A N/A N/A 0.49 ppb (5) N/A 6.0 μg/m3 (25) 25.0
 
May 13, 2019, 6 p.m. 16.6 ppb (15) 5.6 ppb (5) N/A 11.0 ppb (10) N/A N/A N/A 0.46 ppb (5) N/A N/A 15.0
 
May 13, 2019, 5 p.m. 16.8 ppb (16) 5.8 ppb (5) N/A 11.0 ppb (10) N/A N/A N/A 0.46 ppb (5) N/A 6.0 μg/m3 (25) 25.0
 
May 13, 2019, 4 p.m. 17.6 ppb (16) 6.2 ppb (6) N/A 11.0 ppb (10) N/A N/A N/A 0.46 ppb (5) N/A 8.0 μg/m3 (33) 33.0
 
May 13, 2019, 3 p.m. 17.1 ppb (16) 5.8 ppb (5) N/A 11.0 ppb (10) N/A N/A N/A 0.5 ppb (6) N/A 8.0 μg/m3 (33) 33.0
 
May 13, 2019, 2 p.m. 26.8 ppb (25) 10.0 ppb (9) N/A 17.0 ppb (16) N/A N/A N/A 0.64 ppb (7) N/A 8.0 μg/m3 (33) 33.0
 
May 13, 2019, 1 p.m. 28.8 ppb (27) 11.8 ppb (11) N/A 17.0 ppb (16) N/A N/A N/A 0.63 ppb (7) N/A 7.0 μg/m3 (29) 29.0
 
May 13, 2019, noon 10.8 ppb (10) 1.1 ppb (1) N/A 10.0 ppb (9) N/A N/A N/A 0.42 ppb (5) N/A 8.0 μg/m3 (33) 33.0
 
May 13, 2019, 11 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
 
May 13, 2019, 10 a.m. 4.6 ppb (4) 0.1 ppb (0) N/A 5.0 ppb (5) N/A N/A N/A 0.31 ppb (3) N/A 5.0 μg/m3 (21) 21.0
 
May 13, 2019, 9 a.m. 6.0 ppb (6) 0.1 ppb (0) N/A 6.0 ppb (6) N/A N/A N/A 0.32 ppb (4) N/A 7.0 μg/m3 (29) 29.0
 
May 13, 2019, 8 a.m. 6.1 ppb (6) 0.3 ppb (0) N/A 6.0 ppb (6) N/A N/A N/A 0.35 ppb (4) N/A 4.0 μg/m3 (17) 17.0
 
May 13, 2019, 7 a.m. 6.8 ppb (6) 0.5 ppb (0) N/A 6.0 ppb (6) N/A N/A N/A 0.38 ppb (4) N/A 5.0 μg/m3 (21) 21.0
 
May 13, 2019, 6 a.m. 11.2 ppb (10) 2.1 ppb (2) N/A 9.0 ppb (8) N/A N/A N/A 0.56 ppb (6) N/A 7.0 μg/m3 (29) 29.0
 
May 13, 2019, 5 a.m. 12.1 ppb (11) 2.2 ppb (2) N/A 10.0 ppb (9) N/A N/A N/A 0.49 ppb (5) N/A 8.0 μg/m3 (33) 33.0
 
May 13, 2019, 4 a.m. 14.6 ppb (14) 3.1 ppb (3) N/A 12.0 ppb (11) N/A N/A N/A 0.51 ppb (6) N/A 6.0 μg/m3 (25) 25.0
 
May 13, 2019, 3 a.m. 12.6 ppb (12) 2.4 ppb (2) N/A 10.0 ppb (9) N/A N/A N/A 0.53 ppb (6) N/A 7.0 μg/m3 (29) 29.0
 
May 13, 2019, 2 a.m. 11.6 ppb (11) 2.2 ppb (2) N/A 9.0 ppb (8) N/A N/A N/A 0.55 ppb (6) N/A 6.0 μg/m3 (25) 25.0
 
May 13, 2019, 1 a.m. 9.6 ppb (9) 2.2 ppb (2) N/A 7.0 ppb (6) N/A N/A N/A 0.49 ppb (5) N/A 5.0 μg/m3 (21) 21.0
 
May 13, 2019, midnight 7.4 ppb (7) 1.7 ppb (2) N/A 6.0 ppb (6) N/A N/A N/A 0.48 ppb (5) N/A 5.0 μg/m3 (21) 21.0
 
May 12, 2019, 11 p.m. 8.2 ppb (8) 1.8 ppb (2) N/A 6.0 ppb (6) N/A N/A N/A 0.5 ppb (6) N/A 7.0 μg/m3 (29) 29.0
 
May 12, 2019, 10 p.m. 8.0 ppb (7) 1.9 ppb (2) N/A 6.0 ppb (6) N/A N/A N/A 0.51 ppb (6) N/A 6.0 μg/m3 (25) 25.0
 
May 12, 2019, 9 p.m. 7.6 ppb (7) 1.8 ppb (2) N/A 6.0 ppb (6) N/A N/A N/A 0.46 ppb (5) N/A 6.0 μg/m3 (25) 25.0
 
May 12, 2019, 8 p.m. 6.6 ppb (6) 1.4 ppb (1) N/A 5.0 ppb (5) N/A N/A N/A 0.46 ppb (5) N/A 8.0 μg/m3 (33) 33.0