ID: 2411

AQSQID: 060850006

Site Name: San Jose - Knox Ave

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

Updated: June 19, 2021, 8:57 p.m.

Location: San Jose (E San Jose), CA

Reporting: True, Located: True

Current AQI: 62.0

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
June 19, 2021, 7 p.m. 8.2 ppb (8) 1.5 ppb (2) N/A 7.0 ppb (7) N/A N/A N/A 0.46 ppb (6) N/A 17.0 μg/m3 (62) 62.0
 
June 19, 2021, 6 p.m. 9.8 ppb (10) 2.0 ppb (2) N/A 8.0 ppb (8) N/A N/A N/A 0.47 ppb (6) N/A 19.0 μg/m3 (66) 66.0
 
June 19, 2021, 5 p.m. 9.0 ppb (9) 2.2 ppb (3) N/A 7.0 ppb (7) N/A N/A N/A 0.44 ppb (5) N/A 15.0 μg/m3 (58) 58.0
 
June 19, 2021, 4 p.m. 11.1 ppb (11) 3.3 ppb (4) N/A 8.0 ppb (8) N/A N/A N/A 0.44 ppb (5) N/A 19.0 μg/m3 (66) 66.0
 
June 19, 2021, 3 p.m. 13.0 ppb (13) 5.1 ppb (5) N/A 8.0 ppb (8) N/A N/A N/A 0.46 ppb (6) N/A 21.0 μg/m3 (70) 70.0
 
June 19, 2021, 2 p.m. 18.0 ppb (17) 8.4 ppb (8) N/A 10.0 ppb (10) N/A N/A N/A 0.48 ppb (6) N/A 11.0 μg/m3 (46) 46.0
 
June 19, 2021, 1 p.m. 11.5 ppb (11) 4.2 ppb (4) N/A 7.0 ppb (7) N/A N/A N/A 0.4 ppb (5) N/A 13.0 μg/m3 (53) 53.0
 
June 19, 2021, noon 9.4 ppb (9) 3.0 ppb (3) N/A 6.0 ppb (6) N/A N/A N/A 0.38 ppb (5) N/A 15.0 μg/m3 (58) 58.0
 
June 19, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 14.0 μg/m3 (55) 55.0
 
June 19, 2021, 10 a.m. 5.6 ppb (6) 1.1 ppb (2) N/A 5.0 ppb (5) N/A N/A N/A 0.35 ppb (4) N/A 19.0 μg/m3 (66) 66.0
 
June 19, 2021, 9 a.m. 5.9 ppb (6) 0.7 ppb (1) N/A 5.0 ppb (5) N/A N/A N/A 0.38 ppb (5) N/A 13.0 μg/m3 (53) 53.0
 
June 19, 2021, 8 a.m. 7.4 ppb (7) 1.2 ppb (2) N/A 6.0 ppb (6) N/A N/A N/A 0.39 ppb (5) N/A 19.0 μg/m3 (66) 66.0
 
June 19, 2021, 7 a.m. 7.6 ppb (8) 1.6 ppb (2) N/A 6.0 ppb (6) N/A N/A N/A 0.43 ppb (5) N/A 19.0 μg/m3 (66) 66.0
 
June 19, 2021, 6 a.m. 8.7 ppb (9) 1.6 ppb (2) N/A 7.0 ppb (7) N/A N/A N/A 0.48 ppb (6) N/A 19.0 μg/m3 (66) 66.0
 
June 19, 2021, 5 a.m. 13.3 ppb (13) 3.2 ppb (4) N/A 10.0 ppb (10) N/A N/A N/A 0.52 ppb (6) N/A 20.0 μg/m3 (68) 68.0
 
June 19, 2021, 4 a.m. 20.9 ppb (20) 3.8 ppb (4) N/A 17.0 ppb (17) N/A N/A N/A 0.69 ppb (8) N/A 24.0 μg/m3 (77) 77.0
 
June 19, 2021, 3 a.m. 19.8 ppb (19) 3.5 ppb (4) N/A 16.0 ppb (16) N/A N/A N/A 0.74 ppb (8) N/A 22.0 μg/m3 (72) 72.0
 
June 19, 2021, 2 a.m. 16.4 ppb (16) 2.5 ppb (3) N/A 14.0 ppb (14) N/A N/A N/A 0.71 ppb (8) N/A 22.0 μg/m3 (72) 72.0
 
June 19, 2021, 1 a.m. 14.2 ppb (14) 2.1 ppb (2) N/A 12.0 ppb (12) N/A N/A N/A 0.68 ppb (8) N/A 26.0 μg/m3 (81) 81.0
 
June 19, 2021, midnight 13.6 ppb (13) 1.5 ppb (2) N/A 12.0 ppb (12) N/A N/A N/A 0.62 ppb (7) N/A 21.0 μg/m3 (70) 70.0
 
June 18, 2021, 11 p.m. 13.0 ppb (13) 1.1 ppb (2) N/A 12.0 ppb (12) N/A N/A N/A 0.56 ppb (7) N/A 19.0 μg/m3 (66) 66.0
 
June 18, 2021, 10 p.m. 12.2 ppb (12) 0.7 ppb (1) N/A 12.0 ppb (12) N/A N/A N/A 0.55 ppb (7) N/A 18.0 μg/m3 (64) 64.0
 
June 18, 2021, 9 p.m. 12.2 ppb (12) 0.4 ppb (1) N/A 12.0 ppb (12) N/A N/A N/A 0.59 ppb (7) N/A 29.0 μg/m3 (87) 87.0
 
June 18, 2021, 8 p.m. 18.0 ppb (17) 1.0 ppb (1) N/A 17.0 ppb (17) N/A N/A N/A 0.64 ppb (7) N/A 24.0 μg/m3 (77) 77.0
 
June 18, 2021, 7 p.m. 19.5 ppb (19) 1.5 ppb (2) N/A 18.0 ppb (17) N/A N/A N/A 0.68 ppb (8) N/A 24.0 μg/m3 (77) 77.0
 
June 18, 2021, 6 p.m. 22.4 ppb (22) 3.0 ppb (3) N/A 19.0 ppb (18) N/A N/A N/A 0.65 ppb (8) N/A 22.0 μg/m3 (72) 72.0
 
June 18, 2021, 5 p.m. 24.7 ppb (24) 5.2 ppb (5) N/A 20.0 ppb (19) N/A N/A N/A 0.63 ppb (7) N/A 24.0 μg/m3 (77) 77.0
 
June 18, 2021, 4 p.m. 29.4 ppb (28) 9.6 ppb (10) N/A 20.0 ppb (19) N/A N/A N/A 0.61 ppb (7) N/A 23.0 μg/m3 (74) 74.0
 
June 18, 2021, 3 p.m. 36.0 ppb (34) 16.3 ppb (16) N/A 20.0 ppb (19) N/A N/A N/A 0.64 ppb (7) N/A 25.0 μg/m3 (79) 79.0
 
June 18, 2021, 2 p.m. 36.0 ppb (34) 16.3 ppb (16) N/A 20.0 ppb (19) N/A N/A N/A 0.63 ppb (7) N/A 24.0 μg/m3 (77) 77.0
 
June 18, 2021, 1 p.m. 24.4 ppb (24) 6.7 ppb (7) N/A 18.0 ppb (17) N/A N/A N/A 0.56 ppb (7) N/A 12.0 μg/m3 (50) 50.0
 
June 18, 2021, noon 27.8 ppb (27) 10.0 ppb (10) N/A 18.0 ppb (17) N/A N/A N/A 0.63 ppb (7) N/A 22.0 μg/m3 (72) 72.0
 
June 18, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 17.0 μg/m3 (62) 62.0
 
June 18, 2021, 10 a.m. 6.8 ppb (7) 0.0 ppb (0) N/A 7.0 ppb (7) N/A N/A N/A 0.39 ppb (5) N/A 10.0 μg/m3 (42) 42.0
 
June 18, 2021, 9 a.m. 9.5 ppb (9) 0.9 ppb (1) N/A 9.0 ppb (9) N/A N/A N/A 0.44 ppb (5) N/A 18.0 μg/m3 (64) 64.0
 
June 18, 2021, 8 a.m. 11.9 ppb (12) 1.7 ppb (2) N/A 10.0 ppb (10) N/A N/A N/A 0.47 ppb (6) N/A 15.0 μg/m3 (58) 58.0
 
June 18, 2021, 7 a.m. 24.4 ppb (24) 5.0 ppb (5) N/A 19.0 ppb (18) N/A N/A N/A 0.7 ppb (8) N/A 17.0 μg/m3 (62) 62.0
 
June 18, 2021, 6 a.m. 33.1 ppb (32) 5.7 ppb (6) N/A 27.0 ppb (26) N/A N/A N/A 0.76 ppb (10) N/A 24.0 μg/m3 (77) 77.0
 
June 18, 2021, 5 a.m. 26.1 ppb (25) 4.5 ppb (5) N/A 22.0 ppb (21) N/A N/A N/A 0.7 ppb (8) N/A 12.0 μg/m3 (50) 50.0
 
June 18, 2021, 4 a.m. 22.6 ppb (22) 3.2 ppb (4) N/A 19.0 ppb (18) N/A N/A N/A 0.63 ppb (7) N/A 13.0 μg/m3 (53) 53.0
 
June 18, 2021, 3 a.m. 21.3 ppb (21) 3.9 ppb (4) N/A 17.0 ppb (17) N/A N/A N/A 0.68 ppb (8) N/A 11.0 μg/m3 (46) 46.0
 
June 18, 2021, 2 a.m. 20.1 ppb (19) 3.7 ppb (4) N/A 16.0 ppb (16) N/A N/A N/A 0.67 ppb (8) N/A 11.0 μg/m3 (46) 46.0
 
June 18, 2021, 1 a.m. 12.6 ppb (12) 1.6 ppb (2) N/A 11.0 ppb (11) N/A N/A N/A 0.55 ppb (7) N/A 10.0 μg/m3 (42) 42.0
 
June 18, 2021, midnight 13.9 ppb (14) 1.8 ppb (2) N/A 12.0 ppb (12) N/A N/A N/A 0.58 ppb (7) N/A 14.0 μg/m3 (55) 55.0
 
June 17, 2021, 11 p.m. 12.5 ppb (12) 0.9 ppb (1) N/A 12.0 ppb (12) N/A N/A N/A 0.56 ppb (7) N/A 12.0 μg/m3 (50) 50.0
 
June 17, 2021, 10 p.m. 16.5 ppb (16) 1.1 ppb (2) N/A 15.0 ppb (15) N/A N/A N/A 0.62 ppb (7) N/A 16.0 μg/m3 (60) 60.0
 
June 17, 2021, 9 p.m. 13.4 ppb (13) 1.0 ppb (1) N/A 13.0 ppb (13) N/A N/A N/A 0.58 ppb (7) N/A 10.0 μg/m3 (42) 42.0
 
June 17, 2021, 8 p.m. 15.4 ppb (15) 0.9 ppb (1) N/A 14.0 ppb (14) N/A N/A N/A 0.57 ppb (7) N/A 19.0 μg/m3 (66) 66.0
 
June 17, 2021, 7 p.m. 15.9 ppb (15) 1.6 ppb (2) N/A 14.0 ppb (14) N/A N/A N/A 0.54 ppb (6) N/A 12.0 μg/m3 (50) 50.0
 
June 17, 2021, 6 p.m. 18.8 ppb (18) 2.8 ppb (3) N/A 16.0 ppb (16) N/A N/A N/A 0.54 ppb (6) N/A 14.0 μg/m3 (55) 55.0
 
June 17, 2021, 5 p.m. 31.6 ppb (30) 7.6 ppb (8) N/A 24.0 ppb (23) N/A N/A N/A 0.67 ppb (8) N/A 21.0 μg/m3 (70) 70.0
 
June 17, 2021, 4 p.m. 35.3 ppb (34) 12.1 ppb (12) N/A 23.0 ppb (22) N/A N/A N/A 0.7 ppb (8) N/A 15.0 μg/m3 (58) 58.0
 
June 17, 2021, 3 p.m. 44.2 ppb (42) 20.2 ppb (20) N/A 24.0 ppb (23) N/A N/A N/A 0.87 ppb (11) N/A 21.0 μg/m3 (70) 70.0
 
June 17, 2021, 2 p.m. 36.6 ppb (35) 16.4 ppb (16) N/A 20.0 ppb (19) N/A N/A N/A 0.81 ppb (10) N/A 17.0 μg/m3 (62) 62.0
 
June 17, 2021, 1 p.m. 44.3 ppb (42) 24.1 ppb (23) N/A 20.0 ppb (19) N/A N/A N/A 0.92 ppb (11) N/A 15.0 μg/m3 (58) 58.0
 
June 17, 2021, noon 34.6 ppb (33) 15.8 ppb (15) N/A 19.0 ppb (18) N/A N/A N/A 0.76 ppb (10) N/A 9.0 μg/m3 (38) 38.0
 
June 17, 2021, 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
 
June 17, 2021, 10 a.m. 25.4 ppb (24) 5.6 ppb (6) N/A 20.0 ppb (19) N/A N/A N/A 0.76 ppb (10) N/A 12.0 μg/m3 (50) 50.0
 
June 17, 2021, 9 a.m. 26.0 ppb (25) 4.3 ppb (5) N/A 22.0 ppb (21) N/A N/A N/A 0.67 ppb (8) N/A 13.0 μg/m3 (53) 53.0
 
June 17, 2021, 8 a.m. 40.5 ppb (39) 16.0 ppb (16) N/A 25.0 ppb (24) N/A N/A N/A 0.87 ppb (11) N/A 21.0 μg/m3 (70) 70.0
 
June 17, 2021, 7 a.m. 38.3 ppb (37) 13.1 ppb (13) N/A 25.0 ppb (24) N/A N/A N/A 0.85 ppb (10) N/A 18.0 μg/m3 (64) 64.0
 
June 17, 2021, 6 a.m. 20.7 ppb (20) 0.7 ppb (1) N/A 20.0 ppb (19) N/A N/A N/A 0.64 ppb (7) N/A 12.0 μg/m3 (50) 50.0
 
June 17, 2021, 5 a.m. 16.4 ppb (16) 0.1 ppb (1) N/A 16.0 ppb (16) N/A N/A N/A 0.53 ppb (6) N/A 14.0 μg/m3 (55) 55.0
 
June 17, 2021, 4 a.m. 27.4 ppb (26) 5.7 ppb (6) N/A 22.0 ppb (21) N/A N/A N/A 0.64 ppb (7) N/A 16.0 μg/m3 (60) 60.0
 
June 17, 2021, 3 a.m. 21.4 ppb (21) 3.8 ppb (4) N/A 18.0 ppb (17) N/A N/A N/A 0.62 ppb (7) N/A 14.0 μg/m3 (55) 55.0
 
June 17, 2021, 2 a.m. 16.4 ppb (16) 3.2 ppb (4) N/A 13.0 ppb (13) N/A N/A N/A 0.56 ppb (7) N/A 7.0 μg/m3 (30) 30.0
 
June 17, 2021, 1 a.m. 11.9 ppb (12) 2.3 ppb (3) N/A 10.0 ppb (10) N/A N/A N/A 0.51 ppb (6) N/A 7.0 μg/m3 (30) 30.0
 
June 17, 2021, midnight 13.5 ppb (13) 2.7 ppb (3) N/A 11.0 ppb (11) N/A N/A N/A 0.52 ppb (6) N/A 8.0 μg/m3 (34) 34.0
 
June 16, 2021, 11 p.m. 13.6 ppb (13) 2.3 ppb (3) N/A 11.0 ppb (11) N/A N/A N/A 0.52 ppb (6) N/A 7.0 μg/m3 (30) 30.0
 
June 16, 2021, 10 p.m. 16.6 ppb (16) 2.5 ppb (3) N/A 14.0 ppb (14) N/A N/A N/A 0.48 ppb (6) N/A 4.0 μg/m3 (17) 17.0
 
June 16, 2021, 9 p.m. 11.7 ppb (12) 1.2 ppb (2) N/A 11.0 ppb (11) N/A N/A N/A 0.48 ppb (6) N/A 8.0 μg/m3 (34) 34.0
 
June 16, 2021, 8 p.m. 9.9 ppb (10) 0.8 ppb (1) N/A 9.0 ppb (9) N/A N/A N/A 0.43 ppb (5) N/A 12.0 μg/m3 (50) 50.0
 
June 16, 2021, 7 p.m. 13.3 ppb (13) 1.9 ppb (2) N/A 12.0 ppb (12) N/A N/A N/A 0.48 ppb (6) N/A 14.0 μg/m3 (55) 55.0
 
June 16, 2021, 6 p.m. 14.5 ppb (14) 3.1 ppb (3) N/A 11.0 ppb (11) N/A N/A N/A 0.43 ppb (5) N/A 14.0 μg/m3 (55) 55.0
 
June 16, 2021, 5 p.m. 16.6 ppb (16) 4.3 ppb (5) N/A 12.0 ppb (12) N/A N/A N/A 0.47 ppb (6) N/A 13.0 μg/m3 (53) 53.0
 
June 16, 2021, 4 p.m. 23.6 ppb (23) 7.9 ppb (8) N/A 16.0 ppb (16) N/A N/A N/A 0.52 ppb (6) N/A 10.0 μg/m3 (42) 42.0
 
June 16, 2021, 3 p.m. 34.2 ppb (33) 16.6 ppb (16) N/A 18.0 ppb (17) N/A N/A N/A 0.66 ppb (8) N/A 15.0 μg/m3 (58) 58.0
 
June 16, 2021, 2 p.m. 44.3 ppb (42) 26.1 ppb (25) N/A 18.0 ppb (17) N/A N/A N/A 0.75 ppb (10) N/A 11.0 μg/m3 (46) 46.0
 
June 16, 2021, 1 p.m. 26.6 ppb (26) 12.8 ppb (13) N/A 14.0 ppb (14) N/A N/A N/A 0.62 ppb (7) N/A 8.0 μg/m3 (34) 34.0
 
June 16, 2021, noon 30.5 ppb (29) 15.8 ppb (15) N/A 15.0 ppb (15) N/A N/A N/A 0.59 ppb (7) N/A 8.0 μg/m3 (34) 34.0
 
June 16, 2021, 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 (34) 34.0
 
June 16, 2021, 10 a.m. 8.8 ppb (9) 0.1 ppb (1) N/A 9.0 ppb (9) N/A N/A N/A 0.37 ppb (5) N/A 8.0 μg/m3 (34) 34.0
 
June 16, 2021, 9 a.m. 9.6 ppb (10) 0.1 ppb (1) N/A 10.0 ppb (10) N/A N/A N/A 0.41 ppb (5) N/A 14.0 μg/m3 (55) 55.0
 
June 16, 2021, 8 a.m. 13.9 ppb (14) 1.6 ppb (2) N/A 12.0 ppb (12) N/A N/A N/A 0.45 ppb (6) N/A 12.0 μg/m3 (50) 50.0
 
June 16, 2021, 7 a.m. 14.5 ppb (14) 2.8 ppb (3) N/A 12.0 ppb (12) N/A N/A N/A 0.45 ppb (6) N/A 10.0 μg/m3 (42) 42.0
 
June 16, 2021, 6 a.m. 10.7 ppb (11) 0.4 ppb (1) N/A 10.0 ppb (10) N/A N/A N/A 0.44 ppb (5) N/A 12.0 μg/m3 (50) 50.0
 
June 16, 2021, 5 a.m. 14.1 ppb (14) 2.8 ppb (3) N/A 11.0 ppb (11) N/A N/A N/A 0.46 ppb (6) N/A 9.0 μg/m3 (38) 38.0
 
June 16, 2021, 4 a.m. 8.8 ppb (9) 0.7 ppb (1) N/A 8.0 ppb (8) N/A N/A N/A 0.41 ppb (5) N/A 10.0 μg/m3 (42) 42.0
 
June 16, 2021, 3 a.m. 10.1 ppb (10) 1.6 ppb (2) N/A 9.0 ppb (9) N/A N/A N/A 0.46 ppb (6) N/A 5.0 μg/m3 (21) 21.0
 
June 16, 2021, 2 a.m. 9.4 ppb (9) 2.5 ppb (3) N/A 7.0 ppb (7) N/A N/A N/A 0.45 ppb (6) N/A 5.0 μg/m3 (21) 21.0
 
June 16, 2021, 1 a.m. 8.5 ppb (9) 2.4 ppb (3) N/A 6.0 ppb (6) N/A N/A N/A 0.44 ppb (5) N/A 6.0 μg/m3 (25) 25.0
 
June 16, 2021, midnight 10.0 ppb (10) 3.1 ppb (3) N/A 7.0 ppb (7) N/A N/A N/A 0.43 ppb (5) N/A 5.0 μg/m3 (21) 21.0
 
June 15, 2021, 11 p.m. 11.7 ppb (12) 2.9 ppb (3) N/A 9.0 ppb (9) N/A N/A N/A 0.45 ppb (6) N/A 3.0 μg/m3 (13) 13.0
 
June 15, 2021, 10 p.m. 14.1 ppb (14) 3.1 ppb (3) N/A 11.0 ppb (11) N/A N/A N/A 0.45 ppb (6) N/A 4.0 μg/m3 (17) 17.0
 
June 15, 2021, 9 p.m. 11.5 ppb (11) 2.2 ppb (3) N/A 9.0 ppb (9) N/A N/A N/A 0.44 ppb (5) N/A 5.0 μg/m3 (21) 21.0
 
June 15, 2021, 8 p.m. 11.5 ppb (11) 2.8 ppb (3) N/A 9.0 ppb (9) N/A N/A N/A 0.39 ppb (5) N/A 6.0 μg/m3 (25) 25.0
 
June 15, 2021, 7 p.m. 12.6 ppb (12) 3.9 ppb (4) N/A 9.0 ppb (9) N/A N/A N/A 0.36 ppb (5) N/A 10.0 μg/m3 (42) 42.0
 
June 15, 2021, 6 p.m. 10.5 ppb (10) 3.4 ppb (4) N/A 7.0 ppb (7) N/A N/A N/A 0.33 ppb (4) N/A 10.0 μg/m3 (42) 42.0
 
June 15, 2021, 5 p.m. 17.1 ppb (17) 6.9 ppb (7) N/A 10.0 ppb (10) N/A N/A N/A 0.35 ppb (4) N/A 7.0 μg/m3 (30) 30.0
 
June 15, 2021, 4 p.m. 13.8 ppb (14) 5.3 ppb (5) N/A 9.0 ppb (9) N/A N/A N/A 0.34 ppb (4) N/A 6.0 μg/m3 (25) 25.0
 
June 15, 2021, 3 p.m. 15.3 ppb (15) 6.2 ppb (6) N/A 9.0 ppb (9) N/A N/A N/A 0.38 ppb (5) N/A 3.0 μg/m3 (13) 15.0
 
June 15, 2021, 2 p.m. 19.9 ppb (19) 6.7 ppb (7) N/A 13.0 ppb (13) N/A N/A N/A 0.47 ppb (6) N/A 6.0 μg/m3 (25) 25.0
 
June 15, 2021, 1 p.m. 23.6 ppb (23) 7.2 ppb (7) N/A 16.0 ppb (16) N/A N/A N/A 0.52 ppb (6) N/A 7.0 μg/m3 (30) 30.0
 
June 15, 2021, noon 10.9 ppb (11) 1.1 ppb (2) N/A 10.0 ppb (10) N/A N/A N/A 0.38 ppb (5) N/A 6.0 μg/m3 (25) 25.0
 
June 15, 2021, 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
 
June 15, 2021, 10 a.m. 2.9 ppb (3) 0.0 ppb (0) N/A 3.0 ppb (3) N/A N/A N/A 0.26 ppb (4) N/A 4.0 μg/m3 (17) 17.0
 
June 15, 2021, 9 a.m. 2.5 ppb (3) -0.1 ppb (0) N/A 3.0 ppb (3) N/A N/A N/A 0.27 ppb (4) N/A 4.0 μg/m3 (17) 17.0
 
June 15, 2021, 8 a.m. 1.3 ppb (2) -0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A N/A 0.27 ppb (4) N/A 6.0 μg/m3 (25) 25.0
 
June 15, 2021, 7 a.m. 1.5 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A N/A N/A 0.29 ppb (4) N/A 7.0 μg/m3 (30) 30.0
 
June 15, 2021, 6 a.m. 2.2 ppb (3) 0.0 ppb (0) N/A 2.0 ppb (2) N/A N/A N/A 0.3 ppb (4) N/A 9.0 μg/m3 (38) 38.0
 
June 15, 2021, 5 a.m. 3.4 ppb (4) 0.1 ppb (1) N/A 3.0 ppb (3) N/A N/A N/A 0.33 ppb (4) N/A 7.0 μg/m3 (30) 30.0
 
June 15, 2021, 4 a.m. 4.5 ppb (5) 0.5 ppb (1) N/A 4.0 ppb (4) N/A N/A N/A 0.32 ppb (4) N/A 6.0 μg/m3 (25) 25.0
 
June 15, 2021, 3 a.m. 3.1 ppb (3) 0.3 ppb (1) N/A 3.0 ppb (3) N/A N/A N/A 0.33 ppb (4) N/A 7.0 μg/m3 (30) 30.0
 
June 15, 2021, 2 a.m. 2.9 ppb (3) 0.5 ppb (1) N/A 2.0 ppb (2) N/A N/A N/A 0.33 ppb (4) N/A 8.0 μg/m3 (34) 34.0
 
June 15, 2021, 1 a.m. 3.8 ppb (4) 0.8 ppb (1) N/A 3.0 ppb (3) N/A N/A N/A 0.35 ppb (4) N/A 5.0 μg/m3 (21) 21.0
 
June 15, 2021, midnight 4.5 ppb (5) 1.1 ppb (2) N/A 3.0 ppb (3) N/A N/A N/A 0.33 ppb (4) N/A 5.0 μg/m3 (21) 21.0
 
June 14, 2021, 11 p.m. 6.9 ppb (7) 1.8 ppb (2) N/A 5.0 ppb (5) N/A N/A N/A 0.36 ppb (5) N/A 5.0 μg/m3 (21) 21.0
 
June 14, 2021, 10 p.m. 10.1 ppb (10) 3.2 ppb (4) N/A 7.0 ppb (7) N/A N/A N/A 0.39 ppb (5) N/A 4.0 μg/m3 (17) 17.0
 
June 14, 2021, 9 p.m. 8.4 ppb (8) 2.7 ppb (3) N/A 6.0 ppb (6) N/A N/A N/A 0.39 ppb (5) N/A 3.0 μg/m3 (13) 13.0
 
June 14, 2021, 8 p.m. 8.6 ppb (9) 3.4 ppb (4) N/A 5.0 ppb (5) N/A N/A N/A 0.39 ppb (5) N/A 3.0 μg/m3 (13) 13.0
 
June 14, 2021, 7 p.m. 8.8 ppb (9) 3.1 ppb (3) N/A 6.0 ppb (6) N/A N/A N/A 0.4 ppb (5) N/A N/A 9.0
 
June 14, 2021, 6 p.m. 8.8 ppb (9) 3.4 ppb (4) N/A 5.0 ppb (5) N/A N/A N/A 0.37 ppb (5) N/A 2.0 μg/m3 (9) 9.0
 
June 14, 2021, 5 p.m. 9.0 ppb (9) 3.9 ppb (4) N/A 5.0 ppb (5) N/A N/A N/A 0.37 ppb (5) N/A 4.0 μg/m3 (17) 17.0
 
June 14, 2021, 4 p.m. 12.2 ppb (12) 5.8 ppb (6) N/A 6.0 ppb (6) N/A N/A N/A 0.4 ppb (5) N/A 5.0 μg/m3 (21) 21.0
 
June 14, 2021, 3 p.m. 11.2 ppb (11) 5.4 ppb (6) N/A 6.0 ppb (6) N/A N/A N/A 0.4 ppb (5) N/A 5.0 μg/m3 (21) 21.0
 
June 14, 2021, 2 p.m. 24.0 ppb (23) 14.5 ppb (14) N/A 10.0 ppb (10) N/A N/A N/A 0.54 ppb (6) N/A 5.0 μg/m3 (21) 23.0
 
June 14, 2021, 1 p.m. 32.0 ppb (31) 20.5 ppb (20) N/A 12.0 ppb (12) N/A N/A N/A 0.64 ppb (7) N/A 7.0 μg/m3 (30) 31.0
 
June 14, 2021, noon 27.7 ppb (27) 16.5 ppb (16) N/A 11.0 ppb (11) N/A N/A N/A 0.54 ppb (6) N/A 6.0 μg/m3 (25) 27.0
 
June 14, 2021, 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
 
June 14, 2021, 10 a.m. 7.7 ppb (8) 2.6 ppb (3) N/A 5.0 ppb (5) N/A N/A N/A 0.34 ppb (4) N/A 6.0 μg/m3 (25) 25.0
 
June 14, 2021, 9 a.m. 6.9 ppb (7) 2.4 ppb (3) N/A 5.0 ppb (5) N/A N/A N/A 0.38 ppb (5) N/A 5.0 μg/m3 (21) 21.0
 
June 14, 2021, 8 a.m. 6.3 ppb (6) 2.9 ppb (3) N/A 3.0 ppb (3) N/A N/A N/A 0.35 ppb (4) N/A 4.0 μg/m3 (17) 17.0
 
June 14, 2021, 7 a.m. 3.2 ppb (4) 0.5 ppb (1) N/A 3.0 ppb (3) N/A N/A N/A 0.35 ppb (4) N/A 4.0 μg/m3 (17) 17.0
 
June 14, 2021, 6 a.m. 7.1 ppb (7) 2.1 ppb (2) N/A 5.0 ppb (5) N/A N/A N/A 0.4 ppb (5) N/A 7.0 μg/m3 (30) 30.0
 
June 14, 2021, 5 a.m. 4.7 ppb (5) 1.2 ppb (2) N/A 4.0 ppb (4) N/A N/A N/A 0.39 ppb (5) N/A 4.0 μg/m3 (17) 17.0
 
June 14, 2021, 4 a.m. 3.8 ppb (4) 0.7 ppb (1) N/A 3.0 ppb (3) N/A N/A N/A 0.36 ppb (5) N/A 3.0 μg/m3 (13) 13.0
 
June 14, 2021, 3 a.m. 2.6 ppb (3) 0.8 ppb (1) N/A 2.0 ppb (2) N/A N/A N/A 0.35 ppb (4) N/A 6.0 μg/m3 (25) 25.0
 
June 14, 2021, 2 a.m. 3.9 ppb (4) 1.7 ppb (2) N/A 2.0 ppb (2) N/A N/A N/A 0.39 ppb (5) N/A 7.0 μg/m3 (30) 30.0
 
June 14, 2021, 1 a.m. 5.3 ppb (5) 2.5 ppb (3) N/A 3.0 ppb (3) N/A N/A N/A 0.41 ppb (5) N/A 5.0 μg/m3 (21) 21.0
 
June 14, 2021, midnight 6.2 ppb (6) 3.0 ppb (3) N/A 3.0 ppb (3) N/A N/A N/A 0.44 ppb (5) N/A 4.0 μg/m3 (17) 17.0
 
June 13, 2021, 11 p.m. 5.8 ppb (6) 2.9 ppb (3) N/A 3.0 ppb (3) N/A N/A N/A 0.42 ppb (5) N/A 5.0 μg/m3 (21) 21.0
 
June 13, 2021, 10 p.m. 5.1 ppb (5) 2.3 ppb (3) N/A 3.0 ppb (3) N/A N/A N/A 0.41 ppb (5) N/A 3.0 μg/m3 (13) 13.0
 
June 13, 2021, 9 p.m. 5.5 ppb (6) 2.6 ppb (3) N/A 3.0 ppb (3) N/A N/A N/A 0.43 ppb (5) N/A 4.0 μg/m3 (17) 17.0
 
June 13, 2021, 8 p.m. 4.6 ppb (5) 1.7 ppb (2) N/A 3.0 ppb (3) N/A N/A N/A 0.4 ppb (5) N/A 5.0 μg/m3 (21) 21.0
 
June 13, 2021, 7 p.m. 4.3 ppb (5) 1.9 ppb (2) N/A 2.0 ppb (2) N/A N/A N/A 0.37 ppb (5) N/A 5.0 μg/m3 (21) 21.0
 
June 13, 2021, 6 p.m. 3.5 ppb (4) 1.6 ppb (2) N/A 2.0 ppb (2) N/A N/A N/A 0.35 ppb (4) N/A 4.0 μg/m3 (17) 17.0
 
June 13, 2021, 5 p.m. 4.8 ppb (5) 2.5 ppb (3) N/A 2.0 ppb (2) N/A N/A N/A 0.35 ppb (4) N/A 6.0 μg/m3 (25) 25.0
 
June 13, 2021, 4 p.m. 2.9 ppb (3) 1.6 ppb (2) N/A 1.0 ppb (1) N/A N/A N/A 0.34 ppb (4) N/A 4.0 μg/m3 (17) 17.0
 
June 13, 2021, 3 p.m. 2.3 ppb (3) 1.1 ppb (2) N/A 1.0 ppb (1) N/A N/A N/A 0.3 ppb (4) N/A 2.0 μg/m3 (9) 9.0
 
June 13, 2021, 2 p.m. 4.8 ppb (5) 2.3 ppb (3) N/A 3.0 ppb (3) N/A N/A N/A 0.33 ppb (4) N/A 4.0 μg/m3 (17) 17.0
 
June 13, 2021, 1 p.m. 2.8 ppb (3) 0.6 ppb (1) N/A 2.0 ppb (2) N/A N/A N/A 0.32 ppb (4) N/A 3.0 μg/m3 (13) 13.0
 
June 13, 2021, noon 2.4 ppb (3) 0.1 ppb (1) N/A 2.0 ppb (2) N/A N/A N/A 0.29 ppb (4) N/A 1.0 μg/m3 (5) 5.0
 
June 13, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 2.0 μg/m3 (9) 9.0
 
June 13, 2021, 10 a.m. 1.1 ppb (2) 0.2 ppb (1) N/A 1.0 ppb (1) N/A N/A N/A 0.31 ppb (4) N/A 3.0 μg/m3 (13) 13.0
 
June 13, 2021, 9 a.m. 0.7 ppb (1) 0.1 ppb (1) N/A 1.0 ppb (1) N/A N/A N/A 0.28 ppb (4) N/A 6.0 μg/m3 (25) 25.0
 
June 13, 2021, 8 a.m. 1.6 ppb (2) 0.3 ppb (1) N/A 1.0 ppb (1) N/A N/A N/A 0.3 ppb (4) N/A 5.0 μg/m3 (21) 21.0
 
June 13, 2021, 7 a.m. 2.8 ppb (3) 0.6 ppb (1) N/A 2.0 ppb (2) N/A N/A N/A 0.35 ppb (4) N/A 1.0 μg/m3 (5) 5.0
 
June 13, 2021, 6 a.m. 3.7 ppb (4) 0.9 ppb (1) N/A 3.0 ppb (3) N/A N/A N/A 0.37 ppb (5) N/A 1.0 μg/m3 (5) 5.0
 
June 13, 2021, 5 a.m. 8.2 ppb (8) 3.2 ppb (4) N/A 5.0 ppb (5) N/A N/A N/A 0.45 ppb (6) N/A 2.0 μg/m3 (9) 9.0
 
June 13, 2021, 4 a.m. 6.6 ppb (7) 2.3 ppb (3) N/A 4.0 ppb (4) N/A N/A N/A 0.45 ppb (6) N/A 2.0 μg/m3 (9) 9.0
 
June 13, 2021, 3 a.m. 8.5 ppb (9) 3.2 ppb (4) N/A 5.0 ppb (5) N/A N/A N/A 0.53 ppb (6) N/A 2.0 μg/m3 (9) 9.0
 
June 13, 2021, 2 a.m. 4.7 ppb (5) 1.6 ppb (2) N/A 3.0 ppb (3) N/A N/A N/A 0.41 ppb (5) N/A 3.0 μg/m3 (13) 13.0
 
June 13, 2021, 1 a.m. 7.4 ppb (7) 3.3 ppb (4) N/A 4.0 ppb (4) N/A N/A N/A 0.5 ppb (6) N/A 4.0 μg/m3 (17) 17.0
 
June 13, 2021, midnight 6.2 ppb (6) 2.9 ppb (3) N/A 3.0 ppb (3) N/A N/A N/A 0.44 ppb (5) N/A 6.0 μg/m3 (25) 25.0
 
June 12, 2021, 11 p.m. 7.4 ppb (7) 3.4 ppb (4) N/A 4.0 ppb (4) N/A N/A N/A 0.49 ppb (6) N/A 3.0 μg/m3 (13) 13.0
 
June 12, 2021, 10 p.m. 8.8 ppb (9) 3.7 ppb (4) N/A 5.0 ppb (5) N/A N/A N/A 0.5 ppb (6) N/A 4.0 μg/m3 (17) 17.0
 
June 12, 2021, 9 p.m. 5.8 ppb (6) 2.4 ppb (3) N/A 3.0 ppb (3) N/A N/A N/A 0.42 ppb (5) N/A 7.0 μg/m3 (30) 30.0
 
June 12, 2021, 8 p.m. 6.0 ppb (6) 1.7 ppb (2) N/A 4.0 ppb (4) N/A N/A N/A 0.43 ppb (5) N/A 6.0 μg/m3 (25) 25.0