ID: 2975

AQSQID: 060010015

Site Name: Pleasanton - Owens Ct.

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

Updated: June 23, 2021, 7:52 p.m.

Location: Pleasanton (Dougherty), CA

Reporting: True, Located: True

Current AQI: 35.0

Pleasanton (Dougherty) CA, US: 37.701222, -121.903019

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
June 23, 2021, 6 p.m. 37.0 ppb (35) 21.1 ppb (20) N/A 16.0 ppb (16) N/A N/A N/A 0.45 ppb (6) N/A 8.0 μg/m3 (34) 35.0
 
June 23, 2021, 5 p.m. 41.7 ppb (40) 24.8 ppb (24) N/A 17.0 ppb (17) N/A N/A N/A 0.48 ppb (6) N/A 8.0 μg/m3 (34) 40.0
 
June 23, 2021, 4 p.m. 44.7 ppb (43) 28.3 ppb (27) N/A 16.0 ppb (16) N/A N/A N/A 0.45 ppb (6) N/A 5.0 μg/m3 (21) 43.0
 
June 23, 2021, 3 p.m. 14.6 ppb (14) 8.1 ppb (8) N/A 7.0 ppb (7) N/A N/A N/A 0.29 ppb (4) N/A 3.0 μg/m3 (13) 14.0
 
June 23, 2021, 2 p.m. 5.1 ppb (5) 2.3 ppb (3) N/A 3.0 ppb (3) N/A N/A N/A 0.23 ppb (3) N/A 5.0 μg/m3 (21) 21.0
 
June 23, 2021, 1 p.m. 13.5 ppb (13) 5.7 ppb (6) N/A 8.0 ppb (8) N/A N/A N/A 0.27 ppb (4) N/A 3.0 μg/m3 (13) 13.0
 
June 23, 2021, noon 24.0 ppb (23) 11.8 ppb (12) N/A 12.0 ppb (12) N/A N/A N/A 0.33 ppb (4) N/A 0.0 μg/m3 (0) 23.0
 
June 23, 2021, 11 a.m. 14.9 ppb (15) 6.5 ppb (7) N/A 8.0 ppb (8) N/A N/A N/A 0.27 ppb (4) N/A 0.0 μg/m3 (0) 15.0
 
June 23, 2021, 10 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 23, 2021, 9 a.m. 7.5 ppb (8) 3.0 ppb (3) N/A 5.0 ppb (5) N/A N/A N/A 0.24 ppb (3) N/A 3.0 μg/m3 (13) 13.0
 
June 23, 2021, 8 a.m. 7.7 ppb (8) 3.1 ppb (3) N/A 5.0 ppb (5) N/A N/A N/A 0.28 ppb (4) N/A 3.0 μg/m3 (13) 13.0
 
June 23, 2021, 7 a.m. 9.0 ppb (9) 3.6 ppb (4) N/A 5.0 ppb (5) N/A N/A N/A 0.26 ppb (4) N/A 5.0 μg/m3 (21) 21.0
 
June 23, 2021, 6 a.m. 9.0 ppb (9) 3.7 ppb (4) N/A 5.0 ppb (5) N/A N/A N/A 0.29 ppb (4) N/A 4.0 μg/m3 (17) 17.0
 
June 23, 2021, 5 a.m. 10.1 ppb (10) 4.0 ppb (4) N/A 6.0 ppb (6) N/A N/A N/A 0.33 ppb (4) N/A 4.0 μg/m3 (17) 17.0
 
June 23, 2021, 4 a.m. 9.7 ppb (10) 4.0 ppb (4) N/A 6.0 ppb (6) N/A N/A N/A 0.27 ppb (4) N/A 2.0 μg/m3 (9) 10.0
 
June 23, 2021, 3 a.m. 13.6 ppb (13) 5.6 ppb (6) N/A 8.0 ppb (8) N/A N/A N/A 0.39 ppb (5) N/A -1.0 μg/m3 (0) 13.0
 
June 23, 2021, 2 a.m. 13.8 ppb (14) 7.5 ppb (8) N/A 6.0 ppb (6) N/A N/A N/A 0.46 ppb (6) N/A 1.0 μg/m3 (5) 14.0
 
June 23, 2021, 1 a.m. 20.1 ppb (19) 9.8 ppb (10) N/A 10.0 ppb (10) N/A N/A N/A 0.53 ppb (6) N/A 5.0 μg/m3 (21) 21.0
 
June 23, 2021, midnight 19.6 ppb (19) 9.8 ppb (10) N/A 10.0 ppb (10) N/A N/A N/A 0.45 ppb (6) N/A 7.0 μg/m3 (30) 30.0
 
June 22, 2021, 11 p.m. 16.2 ppb (16) 7.4 ppb (7) N/A 9.0 ppb (9) N/A N/A N/A 0.4 ppb (5) N/A 2.0 μg/m3 (9) 16.0
 
June 22, 2021, 10 p.m. 14.5 ppb (14) 5.9 ppb (6) N/A 9.0 ppb (9) N/A N/A N/A 0.37 ppb (5) N/A 4.0 μg/m3 (17) 17.0
 
June 22, 2021, 9 p.m. 13.6 ppb (13) 5.8 ppb (6) N/A 8.0 ppb (8) N/A N/A N/A 0.34 ppb (4) N/A 4.0 μg/m3 (17) 17.0
 
June 22, 2021, 8 p.m. 13.2 ppb (13) 6.2 ppb (6) N/A 7.0 ppb (7) N/A N/A N/A 0.35 ppb (4) N/A 1.0 μg/m3 (5) 13.0
 
June 22, 2021, 7 p.m. 17.5 ppb (17) 8.5 ppb (9) N/A 9.0 ppb (9) N/A N/A N/A 0.37 ppb (5) N/A 4.0 μg/m3 (17) 17.0
 
June 22, 2021, 6 p.m. 19.6 ppb (19) 10.3 ppb (10) N/A 9.0 ppb (9) N/A N/A N/A 0.36 ppb (5) N/A 6.0 μg/m3 (25) 25.0
 
June 22, 2021, 5 p.m. 15.1 ppb (15) 8.2 ppb (8) N/A 7.0 ppb (7) N/A N/A N/A 0.26 ppb (4) N/A 1.0 μg/m3 (5) 15.0
 
June 22, 2021, 4 p.m. 9.1 ppb (9) 4.8 ppb (5) N/A 4.0 ppb (4) N/A N/A N/A 0.23 ppb (3) N/A -4.0 μg/m3 (0) 9.0
 
June 22, 2021, 3 p.m. 4.9 ppb (5) 2.1 ppb (2) N/A 3.0 ppb (3) N/A N/A N/A 0.21 ppb (3) N/A 0.0 μg/m3 (0) 5.0
 
June 22, 2021, 2 p.m. 7.4 ppb (7) 4.0 ppb (4) N/A 3.0 ppb (3) N/A N/A N/A 0.24 ppb (3) N/A 4.0 μg/m3 (17) 17.0
 
June 22, 2021, 1 p.m. 3.6 ppb (4) 1.4 ppb (2) N/A 2.0 ppb (2) N/A N/A N/A 0.22 ppb (3) N/A 0.0 μg/m3 (0) 4.0
 
June 22, 2021, noon 3.4 ppb (4) 1.3 ppb (2) N/A 2.0 ppb (2) N/A N/A N/A 0.2 ppb (3) N/A 0.0 μg/m3 (0) 4.0
 
June 22, 2021, 11 a.m. 3.4 ppb (4) 1.4 ppb (2) N/A 2.0 ppb (2) N/A N/A N/A 0.2 ppb (3) N/A 3.0 μg/m3 (13) 13.0
 
June 22, 2021, 10 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 22, 2021, 9 a.m. 9.8 ppb (10) 4.3 ppb (5) N/A 6.0 ppb (6) N/A N/A N/A 0.22 ppb (3) N/A 3.0 μg/m3 (13) 13.0
 
June 22, 2021, 8 a.m. 6.9 ppb (7) 2.6 ppb (3) N/A 4.0 ppb (4) N/A N/A N/A 0.22 ppb (3) N/A 1.0 μg/m3 (5) 7.0
 
June 22, 2021, 7 a.m. 7.3 ppb (7) 2.7 ppb (3) N/A 5.0 ppb (5) N/A N/A N/A 0.24 ppb (3) N/A 3.0 μg/m3 (13) 13.0
 
June 22, 2021, 6 a.m. 6.5 ppb (7) 2.3 ppb (3) N/A 4.0 ppb (4) N/A N/A N/A 0.24 ppb (3) N/A 3.0 μg/m3 (13) 13.0
 
June 22, 2021, 5 a.m. 8.6 ppb (9) 3.5 ppb (4) N/A 5.0 ppb (5) N/A N/A N/A 0.28 ppb (4) N/A 1.0 μg/m3 (5) 9.0
 
June 22, 2021, 4 a.m. 11.3 ppb (11) 5.2 ppb (5) N/A 6.0 ppb (6) N/A N/A N/A 0.31 ppb (4) N/A 4.0 μg/m3 (17) 17.0
 
June 22, 2021, 3 a.m. 14.2 ppb (14) 6.4 ppb (7) N/A 8.0 ppb (8) N/A N/A N/A 0.42 ppb (5) N/A 7.0 μg/m3 (30) 30.0
 
June 22, 2021, 2 a.m. 12.4 ppb (12) 5.1 ppb (5) N/A 7.0 ppb (7) N/A N/A N/A 0.44 ppb (5) N/A 5.0 μg/m3 (21) 21.0
 
June 22, 2021, 1 a.m. 15.1 ppb (15) 6.6 ppb (7) N/A 9.0 ppb (9) N/A N/A N/A 0.41 ppb (5) N/A 3.0 μg/m3 (13) 15.0
 
June 22, 2021, midnight 14.1 ppb (14) 6.1 ppb (6) N/A 8.0 ppb (8) N/A N/A N/A 0.37 ppb (5) N/A 1.0 μg/m3 (5) 14.0
 
June 21, 2021, 11 p.m. 15.9 ppb (15) 6.3 ppb (6) N/A 10.0 ppb (10) N/A N/A N/A 0.39 ppb (5) N/A 5.0 μg/m3 (21) 21.0
 
June 21, 2021, 10 p.m. 24.3 ppb (23) 10.2 ppb (10) N/A 14.0 ppb (14) N/A N/A N/A 0.41 ppb (5) N/A 6.0 μg/m3 (25) 25.0
 
June 21, 2021, 9 p.m. 22.3 ppb (22) 8.0 ppb (8) N/A 14.0 ppb (14) N/A N/A N/A 0.38 ppb (5) N/A 9.0 μg/m3 (38) 38.0
 
June 21, 2021, 8 p.m. 27.5 ppb (26) 10.8 ppb (11) N/A 17.0 ppb (17) N/A N/A N/A 0.41 ppb (5) N/A 8.0 μg/m3 (34) 34.0
 
June 21, 2021, 7 p.m. 32.3 ppb (31) 13.9 ppb (14) N/A 18.0 ppb (17) N/A N/A N/A 0.53 ppb (6) N/A 12.0 μg/m3 (50) 50.0
 
June 21, 2021, 6 p.m. 38.2 ppb (37) 17.8 ppb (17) N/A 20.0 ppb (19) N/A N/A N/A 0.54 ppb (6) N/A 11.0 μg/m3 (46) 46.0
 
June 21, 2021, 5 p.m. 35.2 ppb (34) 18.4 ppb (18) N/A 17.0 ppb (17) N/A N/A N/A 0.52 ppb (6) N/A 7.0 μg/m3 (30) 34.0
 
June 21, 2021, 4 p.m. 36.3 ppb (35) 19.4 ppb (19) N/A 17.0 ppb (17) N/A N/A N/A 0.49 ppb (6) N/A 6.0 μg/m3 (25) 35.0
 
June 21, 2021, 3 p.m. 38.4 ppb (37) 20.9 ppb (20) N/A 17.0 ppb (17) N/A N/A N/A 0.52 ppb (6) N/A N/A 37.0
 
June 21, 2021, 2 p.m. 21.7 ppb (21) 10.0 ppb (10) N/A 12.0 ppb (12) N/A N/A N/A 0.44 ppb (5) N/A 8.0 μg/m3 (34) 34.0
 
June 21, 2021, 1 p.m. 24.7 ppb (24) 11.4 ppb (11) N/A 13.0 ppb (13) N/A N/A N/A 0.41 ppb (5) N/A 9.0 μg/m3 (38) 38.0
 
June 21, 2021, noon 26.7 ppb (26) 10.5 ppb (10) N/A 16.0 ppb (16) N/A N/A N/A 0.44 ppb (5) N/A 9.0 μg/m3 (38) 38.0
 
June 21, 2021, 11 a.m. 16.7 ppb (16) 5.9 ppb (6) N/A 11.0 ppb (11) N/A N/A N/A 0.34 ppb (4) N/A 8.0 μg/m3 (34) 34.0
 
June 21, 2021, 10 a.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 21, 2021, 9 a.m. 7.6 ppb (8) 2.2 ppb (3) N/A 5.0 ppb (5) N/A N/A N/A 0.29 ppb (4) N/A 6.0 μg/m3 (25) 25.0
 
June 21, 2021, 8 a.m. 6.9 ppb (7) 1.8 ppb (2) N/A 5.0 ppb (5) N/A N/A N/A 0.29 ppb (4) N/A 7.0 μg/m3 (30) 30.0
 
June 21, 2021, 7 a.m. 8.2 ppb (8) 2.1 ppb (2) N/A 6.0 ppb (6) N/A N/A N/A 0.3 ppb (4) N/A 5.0 μg/m3 (21) 21.0
 
June 21, 2021, 6 a.m. 8.8 ppb (9) 2.3 ppb (3) N/A 7.0 ppb (7) N/A N/A N/A 0.31 ppb (4) N/A 6.0 μg/m3 (25) 25.0
 
June 21, 2021, 5 a.m. 9.7 ppb (10) 2.9 ppb (3) N/A 7.0 ppb (7) N/A N/A N/A 0.38 ppb (5) N/A 8.0 μg/m3 (34) 34.0
 
June 21, 2021, 4 a.m. 11.0 ppb (11) 2.6 ppb (3) N/A 8.0 ppb (8) N/A N/A N/A 0.4 ppb (5) N/A 11.0 μg/m3 (46) 46.0
 
June 21, 2021, 3 a.m. 12.7 ppb (12) 3.3 ppb (4) N/A 9.0 ppb (9) N/A N/A N/A 0.49 ppb (6) N/A 11.0 μg/m3 (46) 46.0
 
June 21, 2021, 2 a.m. 10.6 ppb (10) 2.6 ppb (3) N/A 8.0 ppb (8) N/A N/A N/A 0.45 ppb (6) N/A 9.0 μg/m3 (38) 38.0
 
June 21, 2021, 1 a.m. 11.4 ppb (11) 3.2 ppb (4) N/A 8.0 ppb (8) N/A N/A N/A 0.52 ppb (6) N/A 9.0 μg/m3 (38) 38.0
 
June 21, 2021, midnight 10.7 ppb (11) 2.9 ppb (3) N/A 8.0 ppb (8) N/A N/A N/A 0.49 ppb (6) N/A 10.0 μg/m3 (42) 42.0
 
June 20, 2021, 11 p.m. 10.6 ppb (10) 2.7 ppb (3) N/A 8.0 ppb (8) N/A N/A N/A 0.55 ppb (7) N/A 12.0 μg/m3 (50) 50.0
 
June 20, 2021, 10 p.m. 12.5 ppb (12) 3.2 ppb (4) N/A 9.0 ppb (9) N/A N/A N/A 0.64 ppb (7) N/A 10.0 μg/m3 (42) 42.0
 
June 20, 2021, 9 p.m. 13.6 ppb (13) 3.0 ppb (3) N/A 11.0 ppb (11) N/A N/A N/A 0.67 ppb (8) N/A 7.0 μg/m3 (30) 30.0
 
June 20, 2021, 8 p.m. 16.4 ppb (16) 4.2 ppb (4) N/A 12.0 ppb (12) N/A N/A N/A 0.69 ppb (8) N/A 7.0 μg/m3 (30) 30.0
 
June 20, 2021, 7 p.m. 17.4 ppb (17) 4.9 ppb (5) N/A 12.0 ppb (12) N/A N/A N/A 0.75 ppb (10) N/A 9.0 μg/m3 (38) 38.0
 
June 20, 2021, 6 p.m. 13.4 ppb (13) 4.1 ppb (4) N/A 9.0 ppb (9) N/A N/A N/A 0.55 ppb (7) N/A 10.0 μg/m3 (42) 42.0
 
June 20, 2021, 5 p.m. 9.8 ppb (10) 3.0 ppb (3) N/A 7.0 ppb (7) N/A N/A N/A 0.45 ppb (6) N/A 7.0 μg/m3 (30) 30.0
 
June 20, 2021, 4 p.m. 7.8 ppb (8) 2.5 ppb (3) N/A 5.0 ppb (5) N/A N/A N/A 0.34 ppb (4) N/A 16.0 μg/m3 (60) 60.0
 
June 20, 2021, 3 p.m. 6.7 ppb (7) 2.1 ppb (2) N/A 5.0 ppb (5) N/A N/A N/A 0.34 ppb (4) N/A 13.0 μg/m3 (53) 53.0
 
June 20, 2021, 2 p.m. 9.1 ppb (9) 2.8 ppb (3) N/A 6.0 ppb (6) N/A N/A N/A 0.39 ppb (5) N/A 11.0 μg/m3 (46) 46.0
 
June 20, 2021, 1 p.m. 8.3 ppb (8) 1.7 ppb (2) N/A 7.0 ppb (7) N/A N/A N/A 0.34 ppb (4) N/A 9.0 μg/m3 (38) 38.0
 
June 20, 2021, noon 8.8 ppb (9) 1.1 ppb (2) N/A 8.0 ppb (8) N/A N/A N/A 0.31 ppb (4) N/A 20.0 μg/m3 (68) 68.0
 
June 20, 2021, 11 a.m. 5.6 ppb (6) 0.7 ppb (1) N/A 5.0 ppb (5) N/A N/A N/A 0.25 ppb (3) N/A 15.0 μg/m3 (58) 58.0
 
June 20, 2021, 10 a.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
 
June 20, 2021, 9 a.m. 8.9 ppb (9) 1.0 ppb (1) N/A 8.0 ppb (8) N/A N/A N/A 0.3 ppb (4) N/A 15.0 μg/m3 (58) 58.0
 
June 20, 2021, 8 a.m. 8.7 ppb (9) 1.6 ppb (2) N/A 7.0 ppb (7) N/A N/A N/A 0.38 ppb (5) N/A 15.0 μg/m3 (58) 58.0
 
June 20, 2021, 7 a.m. 11.2 ppb (11) 2.6 ppb (3) N/A 9.0 ppb (9) N/A N/A N/A 0.38 ppb (5) N/A 15.0 μg/m3 (58) 58.0
 
June 20, 2021, 6 a.m. 10.9 ppb (11) 2.1 ppb (2) N/A 9.0 ppb (9) N/A N/A N/A 0.46 ppb (6) N/A 9.0 μg/m3 (38) 38.0
 
June 20, 2021, 5 a.m. 16.1 ppb (16) 4.2 ppb (4) N/A 12.0 ppb (12) N/A N/A N/A 0.6 ppb (7) N/A 16.0 μg/m3 (60) 60.0
 
June 20, 2021, 4 a.m. 18.3 ppb (18) 5.0 ppb (5) N/A 13.0 ppb (13) N/A N/A N/A 0.66 ppb (8) N/A 19.0 μg/m3 (66) 66.0
 
June 20, 2021, 3 a.m. 15.6 ppb (15) 4.7 ppb (5) N/A 11.0 ppb (11) N/A N/A N/A 0.6 ppb (7) N/A 14.0 μg/m3 (55) 55.0
 
June 20, 2021, 2 a.m. 13.4 ppb (13) 3.2 ppb (4) N/A 10.0 ppb (10) N/A N/A N/A 0.61 ppb (7) N/A 14.0 μg/m3 (55) 55.0
 
June 20, 2021, 1 a.m. 15.9 ppb (15) 4.4 ppb (5) N/A 12.0 ppb (12) N/A N/A N/A 0.68 ppb (8) N/A 14.0 μg/m3 (55) 55.0
 
June 20, 2021, midnight 16.6 ppb (16) 4.5 ppb (5) N/A 12.0 ppb (12) N/A N/A N/A 0.69 ppb (8) N/A 19.0 μg/m3 (66) 66.0
 
June 19, 2021, 11 p.m. 11.8 ppb (12) 2.4 ppb (3) N/A 9.0 ppb (9) N/A N/A N/A 0.48 ppb (6) N/A 15.0 μg/m3 (58) 58.0
 
June 19, 2021, 10 p.m. 14.1 ppb (14) 2.9 ppb (3) N/A 11.0 ppb (11) N/A N/A N/A 0.51 ppb (6) N/A 24.0 μg/m3 (77) 77.0
 
June 19, 2021, 9 p.m. 13.0 ppb (13) 2.0 ppb (2) N/A 11.0 ppb (11) N/A N/A N/A 0.45 ppb (6) N/A 14.0 μg/m3 (55) 55.0
 
June 19, 2021, 8 p.m. 18.9 ppb (18) 4.3 ppb (5) N/A 15.0 ppb (15) N/A N/A N/A 0.61 ppb (7) N/A 14.0 μg/m3 (55) 55.0
 
June 19, 2021, 7 p.m. 21.7 ppb (21) 5.9 ppb (6) N/A 16.0 ppb (16) N/A N/A N/A 0.75 ppb (10) N/A 17.0 μg/m3 (62) 62.0
 
June 19, 2021, 6 p.m. 19.4 ppb (19) 5.0 ppb (5) N/A 14.0 ppb (14) N/A N/A N/A 0.66 ppb (8) N/A 11.0 μg/m3 (46) 46.0
 
June 19, 2021, 5 p.m. 17.1 ppb (17) 4.6 ppb (5) N/A 13.0 ppb (13) N/A N/A N/A 0.53 ppb (6) N/A 20.0 μg/m3 (68) 68.0
 
June 19, 2021, 4 p.m. 18.7 ppb (18) 6.0 ppb (6) N/A 13.0 ppb (13) N/A N/A N/A 0.52 ppb (6) N/A 16.0 μg/m3 (60) 60.0
 
June 19, 2021, 3 p.m. 23.6 ppb (23) 8.6 ppb (9) N/A 15.0 ppb (15) N/A N/A N/A 0.55 ppb (7) N/A 16.0 μg/m3 (60) 60.0
 
June 19, 2021, 2 p.m. 29.5 ppb (28) 13.0 ppb (13) N/A 17.0 ppb (17) N/A N/A N/A 0.64 ppb (7) N/A 15.0 μg/m3 (58) 58.0
 
June 19, 2021, 1 p.m. 32.8 ppb (31) 15.6 ppb (15) N/A 17.0 ppb (17) N/A N/A N/A 0.57 ppb (7) N/A 14.0 μg/m3 (55) 55.0
 
June 19, 2021, noon 16.1 ppb (16) 2.1 ppb (2) N/A 14.0 ppb (14) N/A N/A N/A 0.36 ppb (5) N/A 21.0 μg/m3 (70) 70.0
 
June 19, 2021, 11 a.m. 15.0 ppb (15) 1.0 ppb (1) N/A 14.0 ppb (14) N/A N/A N/A 0.37 ppb (5) N/A 18.0 μg/m3 (64) 64.0
 
June 19, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 21.0 μg/m3 (70) 70.0
 
June 19, 2021, 9 a.m. 8.2 ppb (8) 0.6 ppb (1) N/A 8.0 ppb (8) N/A N/A N/A 0.29 ppb (4) N/A 20.0 μg/m3 (68) 68.0
 
June 19, 2021, 8 a.m. 7.9 ppb (8) 0.7 ppb (1) N/A 7.0 ppb (7) N/A N/A N/A 0.28 ppb (4) N/A 18.0 μg/m3 (64) 64.0
 
June 19, 2021, 7 a.m. 13.2 ppb (13) 1.2 ppb (2) N/A 12.0 ppb (12) N/A N/A N/A 0.41 ppb (5) N/A 16.0 μg/m3 (60) 60.0
 
June 19, 2021, 6 a.m. 16.7 ppb (16) 3.4 ppb (4) N/A 13.0 ppb (13) N/A N/A N/A 0.46 ppb (6) N/A 16.0 μg/m3 (60) 60.0
 
June 19, 2021, 5 a.m. 17.2 ppb (17) 3.5 ppb (4) N/A 14.0 ppb (14) N/A N/A N/A 0.59 ppb (7) N/A 14.0 μg/m3 (55) 55.0
 
June 19, 2021, 4 a.m. 19.5 ppb (19) 5.0 ppb (5) N/A 15.0 ppb (15) N/A N/A N/A 0.53 ppb (6) N/A 13.0 μg/m3 (53) 53.0
 
June 19, 2021, 3 a.m. 19.4 ppb (19) 5.0 ppb (5) N/A 14.0 ppb (14) N/A N/A N/A 0.63 ppb (7) N/A 13.0 μg/m3 (53) 53.0
 
June 19, 2021, 2 a.m. 21.7 ppb (21) 4.7 ppb (5) N/A 17.0 ppb (17) N/A N/A N/A 0.73 ppb (8) N/A 16.0 μg/m3 (60) 60.0
 
June 19, 2021, 1 a.m. 9.8 ppb (10) 1.4 ppb (2) N/A 8.0 ppb (8) N/A N/A N/A 0.43 ppb (5) N/A 14.0 μg/m3 (55) 55.0
 
June 19, 2021, midnight 13.7 ppb (13) 2.2 ppb (3) N/A 12.0 ppb (12) N/A N/A N/A 0.39 ppb (5) N/A 14.0 μg/m3 (55) 55.0
 
June 18, 2021, 11 p.m. 11.1 ppb (11) 1.3 ppb (2) N/A 10.0 ppb (10) N/A N/A N/A 0.39 ppb (5) N/A 14.0 μg/m3 (55) 55.0
 
June 18, 2021, 10 p.m. 19.2 ppb (19) 3.1 ppb (3) N/A 16.0 ppb (16) N/A N/A N/A 0.43 ppb (5) N/A 7.0 μg/m3 (30) 30.0
 
June 18, 2021, 9 p.m. 24.6 ppb (24) 3.5 ppb (4) N/A 21.0 ppb (20) N/A N/A N/A 0.44 ppb (5) N/A 16.0 μg/m3 (60) 60.0
 
June 18, 2021, 8 p.m. 22.7 ppb (22) 3.1 ppb (3) N/A 20.0 ppb (19) N/A N/A N/A 0.46 ppb (6) N/A 17.0 μg/m3 (62) 62.0
 
June 18, 2021, 7 p.m. 22.4 ppb (22) 2.6 ppb (3) N/A 20.0 ppb (19) N/A N/A N/A 0.46 ppb (6) N/A 15.0 μg/m3 (58) 58.0
 
June 18, 2021, 6 p.m. 26.8 ppb (26) 4.4 ppb (5) N/A 22.0 ppb (21) N/A N/A N/A 0.52 ppb (6) N/A 15.0 μg/m3 (58) 58.0
 
June 18, 2021, 5 p.m. 35.5 ppb (34) 8.4 ppb (8) N/A 27.0 ppb (26) N/A N/A N/A 0.57 ppb (7) N/A 10.0 μg/m3 (42) 42.0
 
June 18, 2021, 4 p.m. 22.9 ppb (22) 4.9 ppb (5) N/A 18.0 ppb (17) N/A N/A N/A 0.42 ppb (5) N/A 13.0 μg/m3 (53) 53.0
 
June 18, 2021, 3 p.m. 55.2 ppb (53) 25.1 ppb (24) N/A 30.0 ppb (29) N/A N/A N/A 0.61 ppb (7) N/A 10.0 μg/m3 (42) 53.0
 
June 18, 2021, 2 p.m. 48.3 ppb (46) 22.5 ppb (22) N/A 26.0 ppb (25) N/A N/A N/A 0.52 ppb (6) N/A 9.0 μg/m3 (38) 46.0
 
June 18, 2021, 1 p.m. 61.4 ppb (59) 35.7 ppb (34) N/A 26.0 ppb (25) N/A N/A N/A 0.58 ppb (7) N/A 9.0 μg/m3 (38) 59.0
 
June 18, 2021, noon 42.8 ppb (41) 16.2 ppb (16) N/A 27.0 ppb (26) N/A N/A N/A 0.4 ppb (5) N/A 8.0 μg/m3 (34) 41.0
 
June 18, 2021, 11 a.m. 35.1 ppb (34) 14.2 ppb (14) N/A 21.0 ppb (20) N/A N/A N/A 0.33 ppb (4) N/A 8.0 μg/m3 (34) 34.0
 
June 18, 2021, 10 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 18, 2021, 9 a.m. 24.3 ppb (23) 5.2 ppb (5) N/A 19.0 ppb (18) N/A N/A N/A 0.36 ppb (5) N/A 6.0 μg/m3 (25) 25.0
 
June 18, 2021, 8 a.m. 20.8 ppb (20) 3.3 ppb (4) N/A 18.0 ppb (17) N/A N/A N/A 0.37 ppb (5) N/A 8.0 μg/m3 (34) 34.0
 
June 18, 2021, 7 a.m. 26.8 ppb (26) 6.4 ppb (7) N/A 20.0 ppb (19) N/A N/A N/A 0.47 ppb (6) N/A 8.0 μg/m3 (34) 34.0
 
June 18, 2021, 6 a.m. 27.5 ppb (26) 5.3 ppb (5) N/A 22.0 ppb (21) N/A N/A N/A 0.53 ppb (6) N/A 6.0 μg/m3 (25) 26.0
 
June 18, 2021, 5 a.m. 9.7 ppb (10) 0.8 ppb (1) N/A 9.0 ppb (9) N/A N/A N/A 0.3 ppb (4) N/A 8.0 μg/m3 (34) 34.0
 
June 18, 2021, 4 a.m. 8.8 ppb (9) 0.4 ppb (1) N/A 8.0 ppb (8) N/A N/A N/A 0.28 ppb (4) N/A 3.0 μg/m3 (13) 13.0
 
June 18, 2021, 3 a.m. 11.7 ppb (12) 1.4 ppb (2) N/A 10.0 ppb (10) N/A N/A N/A 0.28 ppb (4) N/A 5.0 μg/m3 (21) 21.0
 
June 18, 2021, 2 a.m. 13.7 ppb (13) 2.2 ppb (3) N/A 12.0 ppb (12) N/A N/A N/A 0.36 ppb (5) N/A N/A 13.0
 
June 18, 2021, 1 a.m. 13.5 ppb (13) 1.9 ppb (2) N/A 12.0 ppb (12) N/A N/A N/A 0.42 ppb (5) N/A 10.0 μg/m3 (42) 42.0
 
June 18, 2021, midnight 13.2 ppb (13) 1.9 ppb (2) N/A 11.0 ppb (11) N/A N/A N/A 0.39 ppb (5) N/A 12.0 μg/m3 (50) 50.0
 
June 17, 2021, 11 p.m. 9.7 ppb (10) 1.0 ppb (1) N/A 9.0 ppb (9) N/A N/A N/A 0.33 ppb (4) N/A 14.0 μg/m3 (55) 55.0
 
June 17, 2021, 10 p.m. 17.0 ppb (17) 1.4 ppb (2) N/A 16.0 ppb (16) N/A N/A N/A 0.47 ppb (6) N/A 13.0 μg/m3 (53) 53.0
 
June 17, 2021, 9 p.m. 24.4 ppb (24) 4.9 ppb (5) N/A 20.0 ppb (19) N/A N/A N/A 0.52 ppb (6) N/A 10.0 μg/m3 (42) 42.0
 
June 17, 2021, 8 p.m. 20.8 ppb (20) 3.9 ppb (4) N/A 17.0 ppb (17) N/A N/A N/A 0.52 ppb (6) N/A 8.0 μg/m3 (34) 34.0
 
June 17, 2021, 7 p.m. 36.6 ppb (35) 9.3 ppb (9) N/A 27.0 ppb (26) N/A N/A N/A 0.6 ppb (7) N/A 9.0 μg/m3 (38) 38.0
 
June 17, 2021, 6 p.m. 12.1 ppb (12) 2.0 ppb (2) N/A 10.0 ppb (10) N/A N/A N/A 0.31 ppb (4) N/A 11.0 μg/m3 (46) 46.0
 
June 17, 2021, 5 p.m. 18.6 ppb (18) 4.4 ppb (5) N/A 14.0 ppb (14) N/A N/A N/A 0.37 ppb (5) N/A 11.0 μg/m3 (46) 46.0
 
June 17, 2021, 4 p.m. 24.4 ppb (24) 7.3 ppb (7) N/A 17.0 ppb (17) N/A N/A N/A 0.45 ppb (6) N/A 8.0 μg/m3 (34) 34.0
 
June 17, 2021, 3 p.m. 43.6 ppb (42) 18.2 ppb (18) N/A 25.0 ppb (24) N/A N/A N/A 0.54 ppb (6) N/A 9.0 μg/m3 (38) 42.0
 
June 17, 2021, 2 p.m. 72.0 ppb (71) 42.0 ppb (40) N/A 30.0 ppb (29) N/A N/A N/A 0.69 ppb (8) N/A 8.0 μg/m3 (34) 71.0
 
June 17, 2021, 1 p.m. 67.3 ppb (66) 40.1 ppb (38) N/A 27.0 ppb (26) N/A N/A N/A 0.69 ppb (8) N/A 3.0 μg/m3 (13) 66.0
 
June 17, 2021, noon 38.4 ppb (37) 17.4 ppb (17) N/A 21.0 ppb (20) N/A N/A N/A 0.44 ppb (5) N/A 6.0 μg/m3 (25) 37.0
 
June 17, 2021, 11 a.m. 33.5 ppb (32) 11.8 ppb (12) N/A 22.0 ppb (21) N/A N/A N/A 0.38 ppb (5) N/A 9.0 μg/m3 (38) 38.0
 
June 17, 2021, 10 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
 
June 17, 2021, 9 a.m. 18.9 ppb (18) 4.8 ppb (5) N/A 14.0 ppb (14) N/A N/A N/A 0.32 ppb (4) N/A 11.0 μg/m3 (46) 46.0
 
June 17, 2021, 8 a.m. 19.6 ppb (19) 4.4 ppb (5) N/A 15.0 ppb (15) N/A N/A N/A 0.39 ppb (5) N/A 8.0 μg/m3 (34) 34.0
 
June 17, 2021, 7 a.m. 18.9 ppb (18) 4.8 ppb (5) N/A 14.0 ppb (14) N/A N/A N/A 0.35 ppb (4) N/A 8.0 μg/m3 (34) 34.0
 
June 17, 2021, 6 a.m. 11.3 ppb (11) 0.5 ppb (1) N/A 11.0 ppb (11) N/A N/A N/A 0.34 ppb (4) N/A 11.0 μg/m3 (46) 46.0
 
June 17, 2021, 5 a.m. 12.5 ppb (12) 0.5 ppb (1) N/A 12.0 ppb (12) N/A N/A N/A 0.36 ppb (5) N/A 9.0 μg/m3 (38) 38.0
 
June 17, 2021, 4 a.m. 13.7 ppb (13) 0.5 ppb (1) N/A 13.0 ppb (13) N/A N/A N/A 0.4 ppb (5) N/A 9.0 μg/m3 (38) 38.0
 
June 17, 2021, 3 a.m. 9.2 ppb (9) 0.7 ppb (1) N/A 9.0 ppb (9) N/A N/A N/A 0.3 ppb (4) N/A 5.0 μg/m3 (21) 21.0
 
June 17, 2021, 2 a.m. 13.7 ppb (13) 1.9 ppb (2) N/A 12.0 ppb (12) N/A N/A N/A 0.38 ppb (5) N/A N/A 13.0
 
June 17, 2021, 1 a.m. 13.0 ppb (13) 2.4 ppb (3) N/A 11.0 ppb (11) N/A N/A N/A 0.43 ppb (5) N/A 7.0 μg/m3 (30) 30.0
 
June 17, 2021, midnight 10.8 ppb (11) 1.6 ppb (2) N/A 9.0 ppb (9) N/A N/A N/A 0.32 ppb (4) N/A 8.0 μg/m3 (34) 34.0
 
June 16, 2021, 11 p.m. 15.8 ppb (15) 2.9 ppb (3) N/A 13.0 ppb (13) N/A N/A N/A 0.36 ppb (5) N/A 9.0 μg/m3 (38) 38.0
 
June 16, 2021, 10 p.m. 20.7 ppb (20) 3.7 ppb (4) N/A 17.0 ppb (17) N/A N/A N/A 0.41 ppb (5) N/A 6.0 μg/m3 (25) 25.0
 
June 16, 2021, 9 p.m. 6.2 ppb (6) 0.9 ppb (1) N/A 5.0 ppb (5) N/A N/A N/A 0.22 ppb (3) N/A 1.0 μg/m3 (5) 6.0
 
June 16, 2021, 8 p.m. 12.1 ppb (12) 3.2 ppb (4) N/A 9.0 ppb (9) N/A N/A N/A 0.32 ppb (4) N/A -3.0 μg/m3 (0) 12.0
 
June 16, 2021, 7 p.m. 10.5 ppb (10) 2.2 ppb (3) N/A 8.0 ppb (8) N/A N/A N/A 0.3 ppb (4) N/A -1.0 μg/m3 (0) 10.0