ID: 2411

AQSQID: 060850006

Site Name: San Jose - Knox Ave

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

Updated: July 14, 2020, 6:35 p.m.

Location: San Jose (E San Jose), CA

Reporting: True, Located: True

Current AQI: 42.0

San Jose (E San Jose) CA, US: 37.338202, -121.849892

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
July 14, 2020, 5 p.m. 12.7 ppb (12) 5.5 ppb (5) N/A 7.0 ppb (6) N/A N/A N/A 0.21 ppb (2) N/A 10.0 μg/m3 (42) 42.0
 
July 14, 2020, 4 p.m. 11.9 ppb (11) 5.2 ppb (5) N/A 7.0 ppb (6) N/A N/A N/A 0.2 ppb (2) N/A 6.0 μg/m3 (25) 25.0
 
July 14, 2020, 3 p.m. 10.3 ppb (10) 4.2 ppb (4) N/A 6.0 ppb (6) N/A N/A N/A 0.19 ppb (2) N/A 8.0 μg/m3 (33) 33.0
 
July 14, 2020, 2 p.m. 11.5 ppb (11) 4.8 ppb (4) N/A 7.0 ppb (6) N/A N/A N/A 0.2 ppb (2) N/A 8.0 μg/m3 (33) 33.0
 
July 14, 2020, 1 p.m. 12.6 ppb (12) 5.4 ppb (5) N/A 7.0 ppb (6) N/A N/A N/A 0.2 ppb (2) N/A 8.0 μg/m3 (33) 33.0
 
July 14, 2020, noon 9.9 ppb (9) 4.0 ppb (4) N/A 6.0 ppb (6) N/A N/A N/A 0.19 ppb (2) N/A 7.0 μg/m3 (29) 29.0
 
July 14, 2020, 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
 
July 14, 2020, 10 a.m. 2.8 ppb (3) 0.9 ppb (1) N/A 2.0 ppb (2) N/A N/A N/A 0.13 ppb (1) N/A 9.0 μg/m3 (38) 38.0
 
July 14, 2020, 9 a.m. 2.6 ppb (2) 1.0 ppb (1) N/A 2.0 ppb (2) N/A N/A N/A 0.13 ppb (1) N/A 12.0 μg/m3 (50) 50.0
 
July 14, 2020, 8 a.m. 1.5 ppb (1) 0.4 ppb (0) N/A 1.0 ppb (1) N/A N/A N/A 0.13 ppb (1) N/A 8.0 μg/m3 (33) 33.0
 
July 14, 2020, 7 a.m. 2.9 ppb (3) 1.0 ppb (1) N/A 2.0 ppb (2) N/A N/A N/A 0.16 ppb (2) N/A 9.0 μg/m3 (38) 38.0
 
July 14, 2020, 6 a.m. 4.3 ppb (4) 1.3 ppb (1) N/A 3.0 ppb (3) N/A N/A N/A 0.19 ppb (2) N/A 10.0 μg/m3 (42) 42.0
 
July 14, 2020, 5 a.m. 7.9 ppb (7) 3.1 ppb (3) N/A 5.0 ppb (5) N/A N/A N/A 0.25 ppb (3) N/A 12.0 μg/m3 (50) 50.0
 
July 14, 2020, 4 a.m. 12.6 ppb (12) 4.7 ppb (4) N/A 8.0 ppb (7) N/A N/A N/A 0.3 ppb (3) N/A 14.0 μg/m3 (54) 54.0
 
July 14, 2020, 3 a.m. 11.5 ppb (11) 3.2 ppb (3) N/A 8.0 ppb (7) N/A N/A N/A 0.34 ppb (4) N/A 11.0 μg/m3 (46) 46.0
 
July 14, 2020, 2 a.m. 12.4 ppb (11) 3.9 ppb (4) N/A 9.0 ppb (8) N/A N/A N/A 0.35 ppb (4) N/A 14.0 μg/m3 (54) 54.0
 
July 14, 2020, 1 a.m. 8.9 ppb (8) 2.7 ppb (3) N/A 6.0 ppb (6) N/A N/A N/A 0.31 ppb (3) N/A 13.0 μg/m3 (52) 52.0
 
July 14, 2020, midnight 11.8 ppb (11) 3.9 ppb (4) N/A 8.0 ppb (7) N/A N/A N/A 0.33 ppb (4) N/A 11.0 μg/m3 (46) 46.0
 
July 13, 2020, 11 p.m. 12.6 ppb (12) 3.9 ppb (4) N/A 9.0 ppb (8) N/A N/A N/A 0.34 ppb (4) N/A 17.0 μg/m3 (61) 61.0
 
July 13, 2020, 10 p.m. 12.3 ppb (11) 3.2 ppb (3) N/A 9.0 ppb (8) N/A N/A N/A 0.35 ppb (4) N/A 13.0 μg/m3 (52) 52.0
 
July 13, 2020, 9 p.m. 15.3 ppb (14) 3.8 ppb (4) N/A 12.0 ppb (11) N/A N/A N/A 0.36 ppb (4) N/A 14.0 μg/m3 (54) 54.0
 
July 13, 2020, 8 p.m. 16.0 ppb (15) 4.1 ppb (4) N/A 12.0 ppb (11) N/A N/A N/A 0.34 ppb (4) N/A 13.0 μg/m3 (52) 52.0
 
July 13, 2020, 7 p.m. 11.9 ppb (11) 3.3 ppb (3) N/A 9.0 ppb (8) N/A N/A N/A 0.27 ppb (3) N/A 9.0 μg/m3 (38) 38.0
 
July 13, 2020, 6 p.m. 14.0 ppb (13) 5.1 ppb (5) N/A 9.0 ppb (8) N/A N/A N/A 0.26 ppb (3) N/A N/A 13.0
 
July 13, 2020, 5 p.m. 13.9 ppb (13) 5.7 ppb (5) N/A 8.0 ppb (7) N/A N/A N/A 0.23 ppb (3) N/A 9.0 μg/m3 (38) 38.0
 
July 13, 2020, 4 p.m. 15.5 ppb (14) 7.4 ppb (7) N/A 8.0 ppb (7) N/A N/A N/A 0.25 ppb (3) N/A 9.0 μg/m3 (38) 38.0
 
July 13, 2020, 3 p.m. 18.5 ppb (17) 9.5 ppb (9) N/A 9.0 ppb (8) N/A N/A N/A 0.26 ppb (3) N/A 12.0 μg/m3 (50) 50.0
 
July 13, 2020, 2 p.m. 27.2 ppb (25) 14.8 ppb (14) N/A 13.0 ppb (12) N/A N/A N/A 0.34 ppb (4) N/A 14.0 μg/m3 (54) 54.0
 
July 13, 2020, 1 p.m. 25.4 ppb (24) 12.5 ppb (12) N/A 13.0 ppb (12) N/A N/A N/A 0.36 ppb (4) N/A 10.0 μg/m3 (42) 42.0
 
July 13, 2020, noon 12.8 ppb (12) 2.6 ppb (2) N/A 10.0 ppb (9) N/A N/A N/A 0.24 ppb (3) N/A 7.0 μg/m3 (29) 29.0
 
July 13, 2020, 11 a.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
 
July 13, 2020, 10 a.m. 7.5 ppb (7) 0.1 ppb (0) N/A 7.0 ppb (6) N/A N/A N/A 0.14 ppb (2) N/A 13.0 μg/m3 (52) 52.0
 
July 13, 2020, 9 a.m. 5.8 ppb (5) 0.5 ppb (0) N/A 5.0 ppb (5) N/A N/A N/A 0.16 ppb (2) N/A 7.0 μg/m3 (29) 29.0
 
July 13, 2020, 8 a.m. 6.3 ppb (6) 1.7 ppb (2) N/A 5.0 ppb (5) N/A N/A N/A 0.17 ppb (2) N/A 10.0 μg/m3 (42) 42.0
 
July 13, 2020, 7 a.m. 7.9 ppb (7) 3.4 ppb (3) N/A 5.0 ppb (5) N/A N/A N/A 0.22 ppb (2) N/A 10.0 μg/m3 (42) 42.0
 
July 13, 2020, 6 a.m. 8.5 ppb (8) 3.0 ppb (3) N/A 6.0 ppb (6) N/A N/A N/A 0.24 ppb (3) N/A 9.0 μg/m3 (38) 38.0
 
July 13, 2020, 5 a.m. 15.1 ppb (14) 5.5 ppb (5) N/A 10.0 ppb (9) N/A N/A N/A 0.32 ppb (4) N/A 7.0 μg/m3 (29) 29.0
 
July 13, 2020, 4 a.m. 14.8 ppb (14) 4.4 ppb (4) N/A 10.0 ppb (9) N/A N/A N/A 0.4 ppb (4) N/A 10.0 μg/m3 (42) 42.0
 
July 13, 2020, 3 a.m. 12.4 ppb (11) 3.0 ppb (3) N/A 9.0 ppb (8) N/A N/A N/A 0.39 ppb (4) N/A 10.0 μg/m3 (42) 42.0
 
July 13, 2020, 2 a.m. 7.8 ppb (7) 1.3 ppb (1) N/A 7.0 ppb (6) N/A N/A N/A 0.32 ppb (4) N/A 7.0 μg/m3 (29) 29.0
 
July 13, 2020, 1 a.m. 8.8 ppb (8) 2.0 ppb (2) N/A 7.0 ppb (6) N/A N/A N/A 0.34 ppb (4) N/A 9.0 μg/m3 (38) 38.0
 
July 13, 2020, midnight 9.0 ppb (8) 1.8 ppb (2) N/A 7.0 ppb (6) N/A N/A N/A 0.36 ppb (4) N/A 7.0 μg/m3 (29) 29.0
 
July 12, 2020, 11 p.m. 8.7 ppb (8) 1.5 ppb (1) N/A 7.0 ppb (6) N/A N/A N/A 0.33 ppb (4) N/A 6.0 μg/m3 (25) 25.0
 
July 12, 2020, 10 p.m. 6.8 ppb (6) 0.9 ppb (1) N/A 6.0 ppb (6) N/A N/A N/A 0.29 ppb (3) N/A 11.0 μg/m3 (46) 46.0
 
July 12, 2020, 9 p.m. 6.5 ppb (6) 0.7 ppb (1) N/A 6.0 ppb (6) N/A N/A N/A 0.27 ppb (3) N/A 7.0 μg/m3 (29) 29.0
 
July 12, 2020, 8 p.m. 8.1 ppb (8) 1.2 ppb (1) N/A 7.0 ppb (6) N/A N/A N/A 0.28 ppb (3) N/A 10.0 μg/m3 (42) 42.0
 
July 12, 2020, 7 p.m. 8.2 ppb (8) 1.0 ppb (1) N/A 7.0 ppb (6) N/A N/A N/A 0.32 ppb (4) N/A 14.0 μg/m3 (54) 54.0
 
July 12, 2020, 6 p.m. 9.3 ppb (9) 1.3 ppb (1) N/A 8.0 ppb (7) N/A N/A N/A 0.33 ppb (4) N/A 17.0 μg/m3 (61) 61.0
 
July 12, 2020, 5 p.m. 11.6 ppb (11) 2.4 ppb (2) N/A 9.0 ppb (8) N/A N/A N/A 0.36 ppb (4) N/A 12.0 μg/m3 (50) 50.0
 
July 12, 2020, 4 p.m. 12.8 ppb (12) 3.5 ppb (3) N/A 9.0 ppb (8) N/A N/A N/A 0.33 ppb (4) N/A 10.0 μg/m3 (42) 42.0
 
July 12, 2020, 3 p.m. 14.3 ppb (13) 4.6 ppb (4) N/A 10.0 ppb (9) N/A N/A N/A 0.35 ppb (4) N/A 13.0 μg/m3 (52) 52.0
 
July 12, 2020, 2 p.m. 11.4 ppb (11) 2.6 ppb (2) N/A 9.0 ppb (8) N/A N/A N/A 0.29 ppb (3) N/A 13.0 μg/m3 (52) 52.0
 
July 12, 2020, 1 p.m. 11.0 ppb (10) 1.1 ppb (1) N/A 10.0 ppb (9) N/A N/A N/A 0.27 ppb (3) N/A 13.0 μg/m3 (52) 52.0
 
July 12, 2020, noon 7.2 ppb (7) 0.1 ppb (0) N/A 7.0 ppb (6) N/A N/A N/A 0.18 ppb (2) N/A 12.0 μg/m3 (50) 50.0
 
July 12, 2020, 11 a.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
 
July 12, 2020, 10 a.m. 6.3 ppb (6) 0.4 ppb (0) N/A 6.0 ppb (6) N/A N/A N/A 0.31 ppb (3) N/A 10.0 μg/m3 (42) 42.0
 
July 12, 2020, 9 a.m. 5.8 ppb (5) 1.0 ppb (1) N/A 5.0 ppb (5) N/A N/A N/A 0.37 ppb (4) N/A 10.0 μg/m3 (42) 42.0
 
July 12, 2020, 8 a.m. 7.9 ppb (7) 1.3 ppb (1) N/A 7.0 ppb (6) N/A N/A N/A 0.38 ppb (4) N/A 11.0 μg/m3 (46) 46.0
 
July 12, 2020, 7 a.m. 10.7 ppb (10) 1.0 ppb (1) N/A 10.0 ppb (9) N/A N/A N/A 0.44 ppb (5) N/A 15.0 μg/m3 (56) 56.0
 
July 12, 2020, 6 a.m. 14.7 ppb (14) 3.0 ppb (3) N/A 12.0 ppb (11) N/A N/A N/A 0.54 ppb (6) N/A 10.0 μg/m3 (42) 42.0
 
July 12, 2020, 5 a.m. 14.1 ppb (13) 2.9 ppb (3) N/A 11.0 ppb (10) N/A N/A N/A 0.52 ppb (6) N/A 8.0 μg/m3 (33) 33.0
 
July 12, 2020, 4 a.m. 9.9 ppb (9) 1.2 ppb (1) N/A 9.0 ppb (8) N/A N/A N/A 0.44 ppb (5) N/A 4.0 μg/m3 (17) 17.0
 
July 12, 2020, 3 a.m. 12.7 ppb (12) 2.7 ppb (3) N/A 10.0 ppb (9) N/A N/A N/A 0.58 ppb (6) N/A 3.0 μg/m3 (12) 12.0
 
July 12, 2020, 2 a.m. 9.9 ppb (9) 1.9 ppb (2) N/A 8.0 ppb (7) N/A N/A N/A 0.44 ppb (5) N/A 4.0 μg/m3 (17) 17.0
 
July 12, 2020, 1 a.m. 10.3 ppb (10) 2.0 ppb (2) N/A 8.0 ppb (7) N/A N/A N/A 0.48 ppb (5) N/A 6.0 μg/m3 (25) 25.0
 
July 12, 2020, midnight 10.8 ppb (10) 2.2 ppb (2) N/A 9.0 ppb (8) N/A N/A N/A 0.47 ppb (5) N/A 5.0 μg/m3 (21) 21.0
 
July 11, 2020, 11 p.m. 10.0 ppb (9) 1.8 ppb (2) N/A 8.0 ppb (7) N/A N/A N/A 0.46 ppb (5) N/A 8.0 μg/m3 (33) 33.0
 
July 11, 2020, 10 p.m. 9.2 ppb (9) 1.2 ppb (1) N/A 8.0 ppb (7) N/A N/A N/A 0.44 ppb (5) N/A 13.0 μg/m3 (52) 52.0
 
July 11, 2020, 9 p.m. 9.2 ppb (9) 1.4 ppb (1) N/A 8.0 ppb (7) N/A N/A N/A 0.42 ppb (5) N/A 6.0 μg/m3 (25) 25.0
 
July 11, 2020, 8 p.m. 10.0 ppb (9) 1.6 ppb (1) N/A 8.0 ppb (7) N/A N/A N/A 0.4 ppb (4) N/A 8.0 μg/m3 (33) 33.0
 
July 11, 2020, 7 p.m. 11.2 ppb (10) 1.9 ppb (2) N/A 9.0 ppb (8) N/A N/A N/A 0.45 ppb (5) N/A 13.0 μg/m3 (52) 52.0
 
July 11, 2020, 6 p.m. 13.9 ppb (13) 3.1 ppb (3) N/A 11.0 ppb (10) N/A N/A N/A 0.46 ppb (5) N/A 9.0 μg/m3 (38) 38.0
 
July 11, 2020, 5 p.m. 17.8 ppb (16) 5.2 ppb (5) N/A 13.0 ppb (12) N/A N/A N/A 0.48 ppb (5) N/A 12.0 μg/m3 (50) 50.0
 
July 11, 2020, 4 p.m. 20.2 ppb (19) 7.5 ppb (7) N/A 13.0 ppb (12) N/A N/A N/A 0.46 ppb (5) N/A 12.0 μg/m3 (50) 50.0
 
July 11, 2020, 3 p.m. 25.5 ppb (24) 12.4 ppb (11) N/A 13.0 ppb (12) N/A N/A N/A 0.52 ppb (6) N/A 11.0 μg/m3 (46) 46.0
 
July 11, 2020, 2 p.m. 18.0 ppb (17) 7.7 ppb (7) N/A 10.0 ppb (9) N/A N/A N/A 0.46 ppb (5) N/A 7.0 μg/m3 (29) 29.0
 
July 11, 2020, 1 p.m. 14.5 ppb (13) 4.2 ppb (4) N/A 10.0 ppb (9) N/A N/A N/A 0.43 ppb (5) N/A 7.0 μg/m3 (29) 29.0
 
July 11, 2020, noon 10.6 ppb (10) 0.8 ppb (1) N/A 10.0 ppb (9) N/A N/A N/A 0.36 ppb (4) N/A 6.0 μg/m3 (25) 25.0
 
July 11, 2020, 11 a.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
 
July 11, 2020, 10 a.m. 8.0 ppb (7) 1.4 ppb (1) N/A 7.0 ppb (6) N/A N/A N/A 0.32 ppb (4) N/A 10.0 μg/m3 (42) 42.0
 
July 11, 2020, 9 a.m. 7.6 ppb (7) 1.3 ppb (1) N/A 6.0 ppb (6) N/A N/A N/A 0.32 ppb (4) N/A 5.0 μg/m3 (21) 21.0
 
July 11, 2020, 8 a.m. 7.8 ppb (7) 0.6 ppb (1) N/A 7.0 ppb (6) N/A N/A N/A 0.32 ppb (4) N/A 8.0 μg/m3 (33) 33.0
 
July 11, 2020, 7 a.m. 7.9 ppb (7) 0.5 ppb (0) 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
 
July 11, 2020, 6 a.m. 13.6 ppb (13) 3.3 ppb (3) N/A 10.0 ppb (9) N/A N/A N/A 0.43 ppb (5) N/A 7.0 μg/m3 (29) 29.0
 
July 11, 2020, 5 a.m. 15.8 ppb (15) 6.2 ppb (6) N/A 10.0 ppb (9) N/A N/A N/A 0.49 ppb (5) N/A 7.0 μg/m3 (29) 29.0
 
July 11, 2020, 4 a.m. 14.8 ppb (14) 4.8 ppb (4) N/A 10.0 ppb (9) N/A N/A N/A 0.5 ppb (6) N/A 12.0 μg/m3 (50) 50.0
 
July 11, 2020, 3 a.m. 13.6 ppb (13) 3.8 ppb (4) N/A 10.0 ppb (9) N/A N/A N/A 0.46 ppb (5) N/A 3.0 μg/m3 (12) 13.0
 
July 11, 2020, 2 a.m. 15.5 ppb (14) 5.1 ppb (5) N/A 10.0 ppb (9) N/A N/A N/A 0.48 ppb (5) N/A 4.0 μg/m3 (17) 17.0
 
July 11, 2020, 1 a.m. 17.5 ppb (16) 7.0 ppb (6) N/A 11.0 ppb (10) N/A N/A N/A 0.53 ppb (6) N/A 2.0 μg/m3 (8) 16.0
 
July 11, 2020, midnight 15.9 ppb (15) 4.7 ppb (4) N/A 11.0 ppb (10) N/A N/A N/A 0.56 ppb (6) N/A 3.0 μg/m3 (12) 15.0
 
July 10, 2020, 11 p.m. 13.0 ppb (12) 2.9 ppb (3) N/A 10.0 ppb (9) N/A N/A N/A 0.43 ppb (5) N/A 3.0 μg/m3 (12) 12.0
 
July 10, 2020, 10 p.m. 14.4 ppb (13) 3.7 ppb (3) N/A 11.0 ppb (10) N/A N/A N/A 0.44 ppb (5) N/A 3.0 μg/m3 (12) 13.0
 
July 10, 2020, 9 p.m. 16.0 ppb (15) 4.4 ppb (4) N/A 12.0 ppb (11) N/A N/A N/A 0.4 ppb (4) N/A 3.0 μg/m3 (12) 15.0
 
July 10, 2020, 8 p.m. 11.6 ppb (11) 3.7 ppb (3) N/A 8.0 ppb (7) N/A N/A N/A 0.34 ppb (4) N/A 4.0 μg/m3 (17) 17.0
 
July 10, 2020, 7 p.m. 10.8 ppb (10) 3.6 ppb (3) N/A 7.0 ppb (6) N/A N/A N/A 0.31 ppb (3) N/A 5.0 μg/m3 (21) 21.0
 
July 10, 2020, 6 p.m. 14.7 ppb (14) 7.0 ppb (6) N/A 8.0 ppb (7) N/A N/A N/A 0.35 ppb (4) N/A 5.0 μg/m3 (21) 21.0
 
July 10, 2020, 5 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
 
July 10, 2020, 4 p.m. 29.4 ppb (27) 16.2 ppb (15) N/A 13.0 ppb (12) N/A N/A N/A 0.28 ppb (3) N/A 8.0 μg/m3 (33) 33.0
 
July 10, 2020, 3 p.m. 29.9 ppb (28) 18.2 ppb (17) N/A 12.0 ppb (11) N/A N/A N/A 0.28 ppb (3) N/A 8.0 μg/m3 (33) 33.0
 
July 10, 2020, 2 p.m. 35.9 ppb (33) 23.4 ppb (22) N/A 13.0 ppb (12) N/A N/A N/A 0.34 ppb (4) N/A 12.0 μg/m3 (50) 50.0
 
July 10, 2020, 1 p.m. 28.5 ppb (26) 16.3 ppb (15) N/A 12.0 ppb (11) N/A N/A N/A 0.34 ppb (4) N/A 8.0 μg/m3 (33) 33.0
 
July 10, 2020, noon 24.4 ppb (23) 12.3 ppb (11) N/A 12.0 ppb (11) N/A N/A N/A 0.29 ppb (3) N/A 6.0 μg/m3 (25) 25.0
 
July 10, 2020, 11 a.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
 
July 10, 2020, 10 a.m. 13.4 ppb (12) 2.8 ppb (3) N/A 11.0 ppb (10) N/A N/A N/A 0.15 ppb (2) N/A 7.0 μg/m3 (29) 29.0
 
July 10, 2020, 9 a.m. 14.2 ppb (13) 4.7 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
 
July 10, 2020, 8 a.m. 11.2 ppb (10) 3.0 ppb (3) N/A 8.0 ppb (7) N/A N/A N/A 0.15 ppb (2) N/A 8.0 μg/m3 (33) 33.0
 
July 10, 2020, 7 a.m. 10.8 ppb (10) 3.7 ppb (3) N/A 7.0 ppb (6) N/A N/A N/A 0.2 ppb (2) N/A 8.0 μg/m3 (33) 33.0
 
July 10, 2020, 6 a.m. 14.0 ppb (13) 5.4 ppb (5) N/A 9.0 ppb (8) N/A N/A N/A 0.23 ppb (3) N/A 8.0 μg/m3 (33) 33.0
 
July 10, 2020, 5 a.m. 11.8 ppb (11) 3.7 ppb (3) N/A 8.0 ppb (7) N/A N/A N/A 0.22 ppb (2) N/A 7.0 μg/m3 (29) 29.0
 
July 10, 2020, 4 a.m. 18.9 ppb (18) 7.1 ppb (7) N/A 12.0 ppb (11) N/A N/A N/A 0.3 ppb (3) N/A 9.0 μg/m3 (38) 38.0
 
July 10, 2020, 3 a.m. 10.0 ppb (9) 2.1 ppb (2) N/A 8.0 ppb (7) N/A N/A N/A 0.22 ppb (2) N/A 10.0 μg/m3 (42) 42.0
 
July 10, 2020, 2 a.m. 12.4 ppb (11) 3.2 ppb (3) N/A 9.0 ppb (8) N/A N/A N/A 0.28 ppb (3) N/A 9.0 μg/m3 (38) 38.0
 
July 10, 2020, 1 a.m. 10.4 ppb (10) 2.4 ppb (2) N/A 8.0 ppb (7) N/A N/A N/A 0.26 ppb (3) N/A 9.0 μg/m3 (38) 38.0
 
July 10, 2020, midnight 13.3 ppb (12) 3.4 ppb (3) N/A 10.0 ppb (9) N/A N/A N/A 0.32 ppb (4) N/A 11.0 μg/m3 (46) 46.0
 
July 9, 2020, 11 p.m. 9.8 ppb (9) 2.2 ppb (2) N/A 8.0 ppb (7) N/A N/A N/A 0.3 ppb (3) N/A 10.0 μg/m3 (42) 42.0
 
July 9, 2020, 10 p.m. 12.0 ppb (11) 2.7 ppb (3) N/A 9.0 ppb (8) N/A N/A N/A 0.28 ppb (3) N/A 9.0 μg/m3 (38) 38.0
 
July 9, 2020, 9 p.m. 13.4 ppb (12) 3.7 ppb (3) N/A 10.0 ppb (9) N/A N/A N/A 0.27 ppb (3) N/A 11.0 μg/m3 (46) 46.0
 
July 9, 2020, 8 p.m. 14.7 ppb (14) 4.3 ppb (4) N/A 10.0 ppb (9) N/A N/A N/A 0.25 ppb (3) N/A 9.0 μg/m3 (38) 38.0
 
July 9, 2020, 7 p.m. 16.3 ppb (15) 4.3 ppb (4) N/A 12.0 ppb (11) N/A N/A N/A 0.25 ppb (3) N/A 6.0 μg/m3 (25) 25.0
 
July 9, 2020, 6 p.m. 12.3 ppb (11) 3.9 ppb (4) N/A 9.0 ppb (8) N/A N/A N/A 0.18 ppb (2) N/A 5.0 μg/m3 (21) 21.0
 
July 9, 2020, 5 p.m. 16.5 ppb (15) 6.6 ppb (6) N/A 10.0 ppb (9) N/A N/A N/A 0.21 ppb (2) N/A 9.0 μg/m3 (38) 38.0
 
July 9, 2020, 4 p.m. 19.8 ppb (18) 9.8 ppb (9) N/A 10.0 ppb (9) N/A N/A N/A 0.23 ppb (3) N/A 6.0 μg/m3 (25) 25.0
 
July 9, 2020, 3 p.m. 17.0 ppb (16) 9.1 ppb (8) N/A 8.0 ppb (7) N/A N/A N/A 0.19 ppb (2) N/A 7.0 μg/m3 (29) 29.0
 
July 9, 2020, 2 p.m. 25.7 ppb (24) 14.8 ppb (14) N/A 11.0 ppb (10) N/A N/A N/A 0.29 ppb (3) N/A 12.0 μg/m3 (50) 50.0
 
July 9, 2020, 1 p.m. 27.9 ppb (26) 16.3 ppb (15) N/A 12.0 ppb (11) N/A N/A N/A 0.3 ppb (3) N/A 10.0 μg/m3 (42) 42.0
 
July 9, 2020, noon 19.6 ppb (18) 10.1 ppb (9) N/A 10.0 ppb (9) N/A N/A N/A 0.22 ppb (2) N/A 8.0 μg/m3 (33) 33.0
 
July 9, 2020, 11 a.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
 
July 9, 2020, 10 a.m. 7.0 ppb (6) 2.4 ppb (2) N/A 5.0 ppb (5) N/A N/A N/A 0.12 ppb (1) N/A 13.0 μg/m3 (52) 52.0
 
July 9, 2020, 9 a.m. 6.0 ppb (6) 1.6 ppb (1) N/A 4.0 ppb (4) N/A N/A N/A 0.12 ppb (1) N/A 10.0 μg/m3 (42) 42.0
 
July 9, 2020, 8 a.m. 7.2 ppb (7) 1.6 ppb (1) N/A 6.0 ppb (6) N/A N/A N/A 0.14 ppb (2) N/A 10.0 μg/m3 (42) 42.0
 
July 9, 2020, 7 a.m. 8.0 ppb (7) 0.6 ppb (1) N/A 7.0 ppb (6) N/A N/A N/A 0.17 ppb (2) N/A 11.0 μg/m3 (46) 46.0
 
July 9, 2020, 6 a.m. 10.8 ppb (10) 3.2 ppb (3) N/A 8.0 ppb (7) N/A N/A N/A 0.23 ppb (3) N/A 7.0 μg/m3 (29) 29.0
 
July 9, 2020, 5 a.m. 9.9 ppb (9) 2.5 ppb (2) N/A 7.0 ppb (6) N/A N/A N/A 0.22 ppb (2) N/A 6.0 μg/m3 (25) 25.0
 
July 9, 2020, 4 a.m. 12.5 ppb (12) 4.3 ppb (4) N/A 8.0 ppb (7) N/A N/A N/A 0.27 ppb (3) N/A 10.0 μg/m3 (42) 42.0
 
July 9, 2020, 3 a.m. 12.4 ppb (11) 3.5 ppb (3) N/A 9.0 ppb (8) N/A N/A N/A 0.34 ppb (4) N/A 9.0 μg/m3 (38) 38.0
 
July 9, 2020, 2 a.m. 12.5 ppb (12) 3.6 ppb (3) N/A 9.0 ppb (8) N/A N/A N/A 0.32 ppb (4) N/A 6.0 μg/m3 (25) 25.0
 
July 9, 2020, 1 a.m. 12.2 ppb (11) 3.9 ppb (4) N/A 8.0 ppb (7) N/A N/A N/A 0.31 ppb (3) N/A 9.0 μg/m3 (38) 38.0
 
July 9, 2020, midnight 11.9 ppb (11) 3.7 ppb (3) N/A 8.0 ppb (7) N/A N/A N/A 0.31 ppb (3) N/A 11.0 μg/m3 (46) 46.0
 
July 8, 2020, 11 p.m. 12.4 ppb (11) 2.9 ppb (3) N/A 10.0 ppb (9) N/A N/A N/A 0.3 ppb (3) N/A 13.0 μg/m3 (52) 52.0
 
July 8, 2020, 10 p.m. 12.9 ppb (12) 3.1 ppb (3) N/A 10.0 ppb (9) N/A N/A N/A 0.34 ppb (4) N/A 11.0 μg/m3 (46) 46.0
 
July 8, 2020, 9 p.m. 12.9 ppb (12) 3.1 ppb (3) N/A 10.0 ppb (9) N/A N/A N/A 0.36 ppb (4) N/A 12.0 μg/m3 (50) 50.0
 
July 8, 2020, 8 p.m. 12.2 ppb (11) 1.8 ppb (2) N/A 10.0 ppb (9) N/A N/A N/A 0.34 ppb (4) N/A 13.0 μg/m3 (52) 52.0
 
July 8, 2020, 7 p.m. 15.9 ppb (15) 3.5 ppb (3) N/A 12.0 ppb (11) N/A N/A N/A N/A N/A 9.0 μg/m3 (38) 38.0
 
July 8, 2020, 6 p.m. 13.7 ppb (13) 3.5 ppb (3) N/A 10.0 ppb (9) N/A N/A N/A 0.32 ppb (4) N/A 12.0 μg/m3 (50) 50.0
 
July 8, 2020, 5 p.m. 17.0 ppb (16) 6.4 ppb (6) N/A 11.0 ppb (10) N/A N/A N/A 0.32 ppb (4) N/A 12.0 μg/m3 (50) 50.0
 
July 8, 2020, 4 p.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 18.0 μg/m3 (63) 63.0
 
July 8, 2020, 3 p.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 13.0 μg/m3 (52) 52.0
 
July 8, 2020, 2 p.m. 30.7 ppb (28) 18.2 ppb (17) N/A 13.0 ppb (12) N/A N/A N/A 1.33 ppb (15) N/A 12.0 μg/m3 (50) 50.0
 
July 8, 2020, 1 p.m. 37.3 ppb (35) 22.1 ppb (20) N/A 15.0 ppb (14) N/A N/A N/A 1.39 ppb (15) N/A 12.0 μg/m3 (50) 50.0
 
July 8, 2020, noon 21.7 ppb (20) 10.8 ppb (10) N/A 11.0 ppb (10) N/A N/A N/A 1.29 ppb (14) N/A 14.0 μg/m3 (54) 54.0
 
July 8, 2020, 11 a.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
 
July 8, 2020, 10 a.m. 8.4 ppb (8) 2.3 ppb (2) N/A 6.0 ppb (6) N/A N/A N/A 1.15 ppb (13) N/A 12.0 μg/m3 (50) 50.0
 
July 8, 2020, 9 a.m. 11.2 ppb (10) 2.9 ppb (3) N/A 8.0 ppb (7) N/A N/A N/A 1.13 ppb (13) N/A 9.0 μg/m3 (38) 38.0
 
July 8, 2020, 8 a.m. 10.7 ppb (10) 2.7 ppb (3) N/A 8.0 ppb (7) N/A N/A N/A 1.17 ppb (13) N/A 12.0 μg/m3 (50) 50.0
 
July 8, 2020, 7 a.m. 15.6 ppb (14) 4.5 ppb (4) N/A 11.0 ppb (10) N/A N/A N/A 1.23 ppb (14) N/A 14.0 μg/m3 (54) 54.0
 
July 8, 2020, 6 a.m. 14.5 ppb (13) 3.6 ppb (3) N/A 11.0 ppb (10) N/A N/A N/A 1.29 ppb (14) N/A 11.0 μg/m3 (46) 46.0
 
July 8, 2020, 5 a.m. 14.2 ppb (13) 4.3 ppb (4) N/A 10.0 ppb (9) N/A N/A N/A 1.32 ppb (15) N/A 15.0 μg/m3 (56) 56.0
 
July 8, 2020, 4 a.m. 13.2 ppb (12) 4.7 ppb (4) N/A 9.0 ppb (8) N/A N/A N/A 1.3 ppb (14) N/A 10.0 μg/m3 (42) 42.0
 
July 8, 2020, 3 a.m. 11.5 ppb (11) 3.2 ppb (3) N/A 8.0 ppb (7) N/A N/A N/A 1.27 ppb (14) N/A 11.0 μg/m3 (46) 46.0
 
July 8, 2020, 2 a.m. 10.6 ppb (10) 2.9 ppb (3) N/A 8.0 ppb (7) N/A N/A N/A 1.27 ppb (14) N/A 11.0 μg/m3 (46) 46.0
 
July 8, 2020, 1 a.m. 11.2 ppb (10) 2.9 ppb (3) N/A 8.0 ppb (7) N/A N/A N/A 1.29 ppb (14) N/A 9.0 μg/m3 (38) 38.0
 
July 8, 2020, midnight 13.4 ppb (12) 3.0 ppb (3) N/A 10.0 ppb (9) N/A N/A N/A 1.31 ppb (15) N/A 6.0 μg/m3 (25) 25.0
 
July 7, 2020, 11 p.m. 11.2 ppb (10) 2.0 ppb (2) N/A 9.0 ppb (8) N/A N/A N/A 1.27 ppb (14) N/A 9.0 μg/m3 (38) 38.0
 
July 7, 2020, 10 p.m. 13.7 ppb (13) 3.1 ppb (3) N/A 11.0 ppb (10) N/A N/A N/A 1.25 ppb (14) N/A 13.0 μg/m3 (52) 52.0
 
July 7, 2020, 9 p.m. 14.6 ppb (14) 3.6 ppb (3) N/A 11.0 ppb (10) N/A N/A N/A 1.23 ppb (14) N/A 10.0 μg/m3 (42) 42.0
 
July 7, 2020, 8 p.m. 13.1 ppb (12) 3.0 ppb (3) N/A 10.0 ppb (9) N/A N/A N/A 1.2 ppb (13) N/A 7.0 μg/m3 (29) 29.0
 
July 7, 2020, 7 p.m. 15.6 ppb (14) 3.6 ppb (3) N/A 12.0 ppb (11) N/A N/A N/A 1.24 ppb (14) N/A 12.0 μg/m3 (50) 50.0
 
July 7, 2020, 6 p.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A