ID: 2975

AQSQID: 060010015

Site Name: Pleasanton - Owens Ct.

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

Updated: Aug. 1, 2021, 3:54 a.m.

Location: Pleasanton (Dougherty), CA

Reporting: True, Located: True

Current AQI: 17.0

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
July 25, 2021, 2 a.m. 16.1 ppb (16) 4.7 ppb (5) N/A 11.0 ppb (11) N/A N/A N/A 0.71 ppb (8) N/A 5.0 μg/m3 (21) 21.0
 
July 25, 2021, 1 a.m. 19.9 ppb (19) 5.6 ppb (6) N/A 14.0 ppb (14) N/A N/A N/A 0.74 ppb (8) N/A 3.0 μg/m3 (13) 19.0
 
July 25, 2021, midnight 13.2 ppb (13) 3.2 ppb (4) N/A 10.0 ppb (10) N/A N/A N/A 0.44 ppb (5) N/A 6.0 μg/m3 (25) 25.0
 
July 24, 2021, 11 p.m. 17.5 ppb (17) 4.4 ppb (5) N/A 13.0 ppb (13) N/A N/A N/A 0.53 ppb (6) N/A 11.0 μg/m3 (46) 46.0
 
July 24, 2021, 10 p.m. 20.2 ppb (20) 5.5 ppb (6) N/A 15.0 ppb (15) N/A N/A N/A 0.64 ppb (7) N/A 8.0 μg/m3 (34) 34.0
 
July 24, 2021, 9 p.m. 19.1 ppb (19) 4.7 ppb (5) N/A 14.0 ppb (14) N/A N/A N/A 0.63 ppb (7) N/A 9.0 μg/m3 (38) 38.0
 
July 24, 2021, 8 p.m. 18.4 ppb (18) 5.2 ppb (5) N/A 13.0 ppb (13) N/A N/A N/A 0.54 ppb (6) N/A 12.0 μg/m3 (50) 50.0
 
July 24, 2021, 7 p.m. 21.5 ppb (21) 6.8 ppb (7) N/A 15.0 ppb (15) N/A N/A N/A 0.46 ppb (6) N/A 11.0 μg/m3 (46) 46.0
 
July 24, 2021, 6 p.m. 17.9 ppb (17) 6.6 ppb (7) N/A 11.0 ppb (11) N/A N/A N/A 0.53 ppb (6) N/A 15.0 μg/m3 (58) 58.0
 
July 24, 2021, 5 p.m. 9.6 ppb (10) 2.8 ppb (3) N/A 7.0 ppb (7) N/A N/A N/A 0.33 ppb (4) N/A 11.0 μg/m3 (46) 46.0
 
July 24, 2021, 4 p.m. 12.7 ppb (12) 4.9 ppb (5) N/A 8.0 ppb (8) N/A N/A N/A 0.36 ppb (5) N/A 13.0 μg/m3 (53) 53.0
 
July 24, 2021, 3 p.m. 18.7 ppb (18) 8.7 ppb (9) N/A 10.0 ppb (10) N/A N/A N/A 0.41 ppb (5) N/A 15.0 μg/m3 (58) 58.0
 
July 24, 2021, 2 p.m. 14.8 ppb (14) 5.7 ppb (6) N/A 9.0 ppb (9) N/A N/A N/A 0.34 ppb (4) N/A 12.0 μg/m3 (50) 50.0
 
July 24, 2021, 1 p.m. 18.3 ppb (18) 5.9 ppb (6) N/A 12.0 ppb (12) N/A N/A N/A 0.37 ppb (5) N/A 12.0 μg/m3 (50) 50.0
 
July 24, 2021, noon 12.3 ppb (12) 1.8 ppb (2) N/A 11.0 ppb (11) N/A N/A N/A 0.28 ppb (4) N/A 14.0 μg/m3 (55) 55.0
 
July 24, 2021, 11 a.m. 9.1 ppb (9) 0.7 ppb (1) N/A 8.0 ppb (8) N/A N/A N/A 0.25 ppb (3) N/A 21.0 μg/m3 (70) 70.0
 
July 24, 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
 
July 24, 2021, 9 a.m. 16.7 ppb (16) 3.7 ppb (4) N/A 13.0 ppb (13) N/A N/A N/A 0.33 ppb (4) N/A 13.0 μg/m3 (53) 53.0
 
July 24, 2021, 8 a.m. 15.5 ppb (15) 2.9 ppb (3) N/A 13.0 ppb (13) N/A N/A N/A 0.36 ppb (5) N/A 13.0 μg/m3 (53) 53.0
 
July 24, 2021, 7 a.m. 16.5 ppb (16) 4.1 ppb (4) N/A 12.0 ppb (12) N/A N/A N/A 0.38 ppb (5) N/A 11.0 μg/m3 (46) 46.0
 
July 24, 2021, 6 a.m. 17.9 ppb (17) 4.5 ppb (5) 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
 
July 24, 2021, 5 a.m. 9.3 ppb (9) 1.7 ppb (2) N/A 8.0 ppb (8) N/A N/A N/A 0.3 ppb (4) N/A 9.0 μg/m3 (38) 38.0
 
July 24, 2021, 4 a.m. 12.3 ppb (12) 3.5 ppb (4) 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
 
July 24, 2021, 3 a.m. 5.9 ppb (6) 0.8 ppb (1) N/A 5.0 ppb (5) N/A N/A N/A 0.23 ppb (3) N/A 13.0 μg/m3 (53) 53.0
 
July 24, 2021, 2 a.m. 8.9 ppb (9) 1.8 ppb (2) N/A 7.0 ppb (7) N/A N/A N/A 0.34 ppb (4) N/A 10.0 μg/m3 (42) 42.0
 
July 24, 2021, 1 a.m. 11.8 ppb (12) 3.6 ppb (4) N/A 8.0 ppb (8) N/A N/A N/A 0.45 ppb (6) N/A 6.0 μg/m3 (25) 25.0
 
July 24, 2021, midnight 18.2 ppb (18) 5.3 ppb (5) N/A 13.0 ppb (13) N/A N/A N/A 0.57 ppb (7) N/A 11.0 μg/m3 (46) 46.0
 
July 23, 2021, 11 p.m. 27.2 ppb (26) 7.5 ppb (8) N/A 20.0 ppb (19) N/A N/A N/A 0.5 ppb (6) N/A 17.0 μg/m3 (62) 62.0
 
July 23, 2021, 10 p.m. 30.9 ppb (30) 9.3 ppb (9) N/A 22.0 ppb (21) N/A N/A N/A 0.54 ppb (6) N/A 18.0 μg/m3 (64) 64.0
 
July 23, 2021, 9 p.m. 24.3 ppb (23) 5.7 ppb (6) N/A 19.0 ppb (18) N/A N/A N/A 0.41 ppb (5) N/A 17.0 μg/m3 (62) 62.0
 
July 23, 2021, 8 p.m. 24.9 ppb (24) 6.8 ppb (7) N/A 18.0 ppb (17) N/A N/A N/A 0.41 ppb (5) N/A 18.0 μg/m3 (64) 64.0
 
July 23, 2021, 7 p.m. 25.3 ppb (24) 7.8 ppb (8) N/A 18.0 ppb (17) N/A N/A N/A 0.45 ppb (6) N/A 15.0 μg/m3 (58) 58.0
 
July 23, 2021, 6 p.m. 30.0 ppb (29) 11.6 ppb (11) N/A 18.0 ppb (17) N/A N/A N/A 0.46 ppb (6) N/A 12.0 μg/m3 (50) 50.0
 
July 23, 2021, 5 p.m. 24.2 ppb (23) 9.8 ppb (10) N/A 14.0 ppb (14) N/A N/A N/A 0.35 ppb (4) N/A 17.0 μg/m3 (62) 62.0
 
July 23, 2021, 4 p.m. 30.3 ppb (29) 14.7 ppb (14) N/A 16.0 ppb (16) N/A N/A N/A 0.43 ppb (5) N/A 11.0 μg/m3 (46) 46.0
 
July 23, 2021, 3 p.m. 14.1 ppb (14) 5.5 ppb (6) N/A 9.0 ppb (9) N/A N/A N/A 0.32 ppb (4) N/A 17.0 μg/m3 (62) 62.0
 
July 23, 2021, 2 p.m. 16.9 ppb (16) 6.8 ppb (7) N/A 10.0 ppb (10) N/A N/A N/A 0.35 ppb (4) N/A 17.0 μg/m3 (62) 62.0
 
July 23, 2021, 1 p.m. 19.6 ppb (19) 5.7 ppb (6) N/A 14.0 ppb (14) N/A N/A N/A 0.4 ppb (5) N/A 11.0 μg/m3 (46) 46.0
 
July 23, 2021, noon 10.6 ppb (10) 1.4 ppb (2) N/A 9.0 ppb (9) N/A N/A N/A 0.29 ppb (4) N/A 10.0 μg/m3 (42) 42.0
 
July 23, 2021, 11 a.m. 14.9 ppb (15) 3.5 ppb (4) N/A 11.0 ppb (11) N/A N/A N/A 0.26 ppb (4) N/A 10.0 μg/m3 (42) 42.0
 
July 23, 2021, 10 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 23, 2021, 9 a.m. 13.3 ppb (13) 3.1 ppb (3) N/A 10.0 ppb (10) N/A N/A N/A 0.24 ppb (3) N/A 10.0 μg/m3 (42) 42.0
 
July 23, 2021, 8 a.m. 14.2 ppb (14) 2.6 ppb (3) N/A 12.0 ppb (12) N/A N/A N/A 0.26 ppb (4) N/A 13.0 μg/m3 (53) 53.0
 
July 23, 2021, 7 a.m. 14.9 ppb (15) 2.8 ppb (3) N/A 12.0 ppb (12) N/A N/A N/A 0.26 ppb (4) N/A 13.0 μg/m3 (53) 53.0
 
July 23, 2021, 6 a.m. 13.7 ppb (13) 4.6 ppb (5) N/A 9.0 ppb (9) N/A N/A N/A 0.34 ppb (4) N/A 12.0 μg/m3 (50) 50.0
 
July 23, 2021, 5 a.m. 15.2 ppb (15) 5.0 ppb (5) N/A 10.0 ppb (10) N/A N/A N/A 0.33 ppb (4) N/A 11.0 μg/m3 (46) 46.0
 
July 23, 2021, 4 a.m. 17.1 ppb (17) 6.6 ppb (7) N/A 11.0 ppb (11) N/A N/A N/A 0.36 ppb (5) N/A 15.0 μg/m3 (58) 58.0
 
July 23, 2021, 3 a.m. 17.1 ppb (17) 6.8 ppb (7) N/A 10.0 ppb (10) N/A N/A N/A 0.4 ppb (5) N/A 11.0 μg/m3 (46) 46.0
 
July 23, 2021, 2 a.m. 21.4 ppb (21) 10.7 ppb (11) 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
 
July 23, 2021, 1 a.m. 19.8 ppb (19) 8.6 ppb (9) N/A 11.0 ppb (11) N/A N/A N/A 0.46 ppb (6) N/A 10.0 μg/m3 (42) 42.0
 
July 23, 2021, midnight 21.3 ppb (21) 10.5 ppb (10) N/A 11.0 ppb (11) N/A N/A N/A 0.44 ppb (5) N/A 16.0 μg/m3 (60) 60.0
 
July 22, 2021, 11 p.m. 21.8 ppb (21) 10.2 ppb (10) N/A 12.0 ppb (12) N/A N/A N/A 0.48 ppb (6) N/A 13.0 μg/m3 (53) 53.0
 
July 22, 2021, 10 p.m. 24.0 ppb (23) 11.0 ppb (11) N/A 13.0 ppb (13) N/A N/A N/A 0.42 ppb (5) N/A 18.0 μg/m3 (64) 64.0
 
July 22, 2021, 9 p.m. 25.2 ppb (24) 9.7 ppb (10) N/A 15.0 ppb (15) N/A N/A N/A 0.4 ppb (5) N/A 19.0 μg/m3 (66) 66.0
 
July 22, 2021, 8 p.m. 31.5 ppb (30) 13.6 ppb (13) N/A 18.0 ppb (17) N/A N/A N/A 0.5 ppb (6) N/A 14.0 μg/m3 (55) 55.0
 
July 22, 2021, 7 p.m. 34.1 ppb (33) 16.6 ppb (16) N/A 18.0 ppb (17) N/A N/A N/A 0.48 ppb (6) N/A 12.0 μg/m3 (50) 50.0
 
July 22, 2021, 6 p.m. 47.0 ppb (45) 26.5 ppb (25) N/A 21.0 ppb (20) N/A N/A N/A 0.51 ppb (6) N/A 13.0 μg/m3 (53) 53.0
 
July 22, 2021, 5 p.m. 37.2 ppb (36) 20.1 ppb (19) N/A 17.0 ppb (17) N/A N/A N/A 0.42 ppb (5) N/A 21.0 μg/m3 (70) 70.0
 
July 22, 2021, 4 p.m. 32.1 ppb (31) 17.6 ppb (17) N/A 15.0 ppb (15) N/A N/A N/A 0.38 ppb (5) N/A N/A 31.0
 
July 22, 2021, 3 p.m. 17.9 ppb (17) 8.4 ppb (8) N/A 10.0 ppb (10) N/A N/A N/A 0.37 ppb (5) N/A 14.0 μg/m3 (55) 55.0
 
July 22, 2021, 2 p.m. 18.6 ppb (18) 8.3 ppb (8) 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
 
July 22, 2021, 1 p.m. 27.6 ppb (27) 12.0 ppb (12) N/A 16.0 ppb (16) N/A N/A N/A 0.44 ppb (5) N/A 13.0 μg/m3 (53) 53.0
 
July 22, 2021, noon 37.9 ppb (36) 19.6 ppb (19) N/A 18.0 ppb (17) N/A N/A N/A 0.46 ppb (6) N/A 10.0 μg/m3 (42) 42.0
 
July 22, 2021, 11 a.m. 28.6 ppb (27) 12.4 ppb (12) N/A 16.0 ppb (16) N/A N/A N/A 0.39 ppb (5) N/A 11.0 μg/m3 (46) 46.0
 
July 22, 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
 
July 22, 2021, 9 a.m. 12.2 ppb (12) 3.4 ppb (4) N/A 9.0 ppb (9) N/A N/A N/A 0.27 ppb (4) N/A 12.0 μg/m3 (50) 50.0
 
July 22, 2021, 8 a.m. 10.2 ppb (10) 2.7 ppb (3) N/A 8.0 ppb (8) N/A N/A N/A 0.28 ppb (4) N/A 11.0 μg/m3 (46) 46.0
 
July 22, 2021, 7 a.m. 9.3 ppb (9) 3.0 ppb (3) N/A 6.0 ppb (6) N/A N/A N/A 0.24 ppb (3) N/A 13.0 μg/m3 (53) 53.0
 
July 22, 2021, 6 a.m. 8.9 ppb (9) 3.9 ppb (4) N/A 5.0 ppb (5) N/A N/A N/A 0.3 ppb (4) N/A 15.0 μg/m3 (58) 58.0
 
July 22, 2021, 5 a.m. 13.2 ppb (13) 6.2 ppb (6) N/A 7.0 ppb (7) N/A N/A N/A 0.38 ppb (5) N/A 13.0 μg/m3 (53) 53.0
 
July 22, 2021, 4 a.m. 13.6 ppb (13) 6.0 ppb (6) N/A 8.0 ppb (8) N/A N/A N/A 0.38 ppb (5) N/A 12.0 μg/m3 (50) 50.0
 
July 22, 2021, 3 a.m. 16.6 ppb (16) 7.5 ppb (8) N/A 9.0 ppb (9) N/A N/A N/A 0.45 ppb (6) N/A 14.0 μg/m3 (55) 55.0
 
July 22, 2021, 2 a.m. 18.1 ppb (18) 8.1 ppb (8) N/A 10.0 ppb (10) N/A N/A N/A 0.57 ppb (7) N/A 13.0 μg/m3 (53) 53.0
 
July 22, 2021, 1 a.m. 23.5 ppb (23) 11.3 ppb (11) N/A 12.0 ppb (12) N/A N/A N/A 0.69 ppb (8) N/A 13.0 μg/m3 (53) 53.0
 
July 22, 2021, midnight 20.6 ppb (20) 9.6 ppb (10) N/A 11.0 ppb (11) N/A N/A N/A 0.51 ppb (6) N/A 11.0 μg/m3 (46) 46.0
 
July 21, 2021, 11 p.m. 23.5 ppb (23) 10.7 ppb (11) N/A 13.0 ppb (13) N/A N/A N/A 0.49 ppb (6) N/A 12.0 μg/m3 (50) 50.0
 
July 21, 2021, 10 p.m. 27.0 ppb (26) 13.2 ppb (13) N/A 14.0 ppb (14) N/A N/A N/A 0.48 ppb (6) N/A 10.0 μg/m3 (42) 42.0
 
July 21, 2021, 9 p.m. 28.0 ppb (27) 12.4 ppb (12) N/A 16.0 ppb (16) N/A N/A N/A 0.51 ppb (6) N/A 11.0 μg/m3 (46) 46.0
 
July 21, 2021, 8 p.m. 38.6 ppb (37) 18.5 ppb (18) N/A 20.0 ppb (19) N/A N/A N/A 0.59 ppb (7) N/A 14.0 μg/m3 (55) 55.0
 
July 21, 2021, 7 p.m. 39.1 ppb (37) 20.8 ppb (20) N/A 18.0 ppb (17) N/A N/A N/A 0.52 ppb (6) N/A 9.0 μg/m3 (38) 38.0
 
July 21, 2021, 6 p.m. 41.9 ppb (40) 22.6 ppb (22) N/A 19.0 ppb (18) N/A N/A N/A 0.48 ppb (6) N/A 9.0 μg/m3 (38) 40.0
 
July 21, 2021, 5 p.m. 36.9 ppb (35) 20.0 ppb (19) N/A 17.0 ppb (17) N/A N/A N/A 0.48 ppb (6) N/A 10.0 μg/m3 (42) 42.0
 
July 21, 2021, 4 p.m. 48.3 ppb (46) 28.9 ppb (28) N/A 19.0 ppb (18) N/A N/A N/A 0.47 ppb (6) N/A 15.0 μg/m3 (58) 58.0
 
July 21, 2021, 3 p.m. 43.4 ppb (41) 26.2 ppb (25) N/A 17.0 ppb (17) N/A N/A N/A 0.54 ppb (6) N/A 13.0 μg/m3 (53) 53.0
 
July 21, 2021, 2 p.m. 37.3 ppb (36) 21.2 ppb (20) N/A 16.0 ppb (16) N/A N/A N/A 0.48 ppb (6) N/A 15.0 μg/m3 (58) 58.0
 
July 21, 2021, 1 p.m. 28.9 ppb (28) 12.0 ppb (12) N/A 17.0 ppb (17) N/A N/A N/A 0.4 ppb (5) N/A 12.0 μg/m3 (50) 50.0
 
July 21, 2021, noon 25.6 ppb (25) 10.7 ppb (11) N/A 15.0 ppb (15) N/A N/A N/A 0.38 ppb (5) N/A 9.0 μg/m3 (38) 38.0
 
July 21, 2021, 11 a.m. 18.1 ppb (18) 8.0 ppb (8) N/A 10.0 ppb (10) N/A N/A N/A 0.3 ppb (4) N/A 5.0 μg/m3 (21) 21.0
 
July 21, 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
 
July 21, 2021, 9 a.m. 10.0 ppb (10) 3.6 ppb (4) N/A 6.0 ppb (6) N/A N/A N/A 0.23 ppb (3) N/A 10.0 μg/m3 (42) 42.0
 
July 21, 2021, 8 a.m. 11.9 ppb (12) 4.6 ppb (5) N/A 7.0 ppb (7) N/A N/A N/A 0.26 ppb (4) N/A 8.0 μg/m3 (34) 34.0
 
July 21, 2021, 7 a.m. 13.8 ppb (14) 5.0 ppb (5) N/A 9.0 ppb (9) N/A N/A N/A 0.38 ppb (5) N/A 7.0 μg/m3 (30) 30.0
 
July 21, 2021, 6 a.m. 11.4 ppb (11) 4.8 ppb (5) N/A 7.0 ppb (7) N/A N/A N/A 0.29 ppb (4) N/A 5.0 μg/m3 (21) 21.0
 
July 21, 2021, 5 a.m. 13.6 ppb (13) 5.9 ppb (6) N/A 8.0 ppb (8) N/A N/A N/A 0.37 ppb (5) N/A 4.0 μg/m3 (17) 17.0
 
July 21, 2021, 4 a.m. 19.0 ppb (18) 9.2 ppb (9) N/A 10.0 ppb (10) N/A N/A N/A 0.44 ppb (5) N/A 9.0 μg/m3 (38) 38.0
 
July 21, 2021, 3 a.m. 16.9 ppb (16) 7.9 ppb (8) N/A 9.0 ppb (9) N/A N/A N/A 0.51 ppb (6) N/A 9.0 μg/m3 (38) 38.0
 
July 21, 2021, 2 a.m. 18.4 ppb (18) 9.9 ppb (10) N/A 9.0 ppb (9) N/A N/A N/A 0.53 ppb (6) N/A 9.0 μg/m3 (38) 38.0
 
July 21, 2021, 1 a.m. 19.8 ppb (19) 10.1 ppb (10) N/A 10.0 ppb (10) N/A N/A N/A 0.58 ppb (7) N/A 9.0 μg/m3 (38) 38.0
 
July 21, 2021, midnight 25.5 ppb (25) 13.1 ppb (13) N/A 12.0 ppb (12) N/A N/A N/A 0.51 ppb (6) N/A 10.0 μg/m3 (42) 42.0
 
July 20, 2021, 11 p.m. 24.1 ppb (23) 12.0 ppb (12) N/A 12.0 ppb (12) N/A N/A N/A 0.52 ppb (6) N/A 13.0 μg/m3 (53) 53.0
 
July 20, 2021, 10 p.m. 27.8 ppb (27) 14.2 ppb (14) N/A 14.0 ppb (14) N/A N/A N/A 0.48 ppb (6) N/A 8.0 μg/m3 (34) 34.0
 
July 20, 2021, 9 p.m. 26.5 ppb (25) 13.9 ppb (14) N/A 13.0 ppb (13) N/A N/A N/A 0.41 ppb (5) N/A 8.0 μg/m3 (34) 34.0
 
July 20, 2021, 8 p.m. 21.6 ppb (21) 9.7 ppb (10) N/A 12.0 ppb (12) N/A N/A N/A 0.38 ppb (5) N/A 4.0 μg/m3 (17) 21.0
 
July 20, 2021, 7 p.m. 29.2 ppb (28) 14.4 ppb (14) N/A 15.0 ppb (15) N/A N/A N/A 0.43 ppb (5) N/A 2.0 μg/m3 (9) 28.0
 
July 20, 2021, 6 p.m. 35.4 ppb (34) 21.5 ppb (21) N/A 14.0 ppb (14) N/A N/A N/A 0.43 ppb (5) N/A 7.0 μg/m3 (30) 34.0
 
July 20, 2021, 5 p.m. 42.4 ppb (40) 26.0 ppb (25) N/A 16.0 ppb (16) N/A N/A N/A 0.47 ppb (6) N/A 12.0 μg/m3 (50) 50.0
 
July 20, 2021, 4 p.m. 37.8 ppb (36) 24.3 ppb (23) N/A 14.0 ppb (14) N/A N/A N/A 0.48 ppb (6) N/A 14.0 μg/m3 (55) 55.0
 
July 20, 2021, 3 p.m. 35.1 ppb (34) 22.0 ppb (21) N/A 13.0 ppb (13) N/A N/A N/A 0.47 ppb (6) N/A 12.0 μg/m3 (50) 50.0
 
July 20, 2021, 2 p.m. 31.3 ppb (30) 18.6 ppb (18) N/A 13.0 ppb (13) N/A N/A N/A 0.45 ppb (6) N/A 10.0 μg/m3 (42) 42.0
 
July 20, 2021, 1 p.m. 35.8 ppb (34) 19.0 ppb (18) N/A 17.0 ppb (17) N/A N/A N/A 0.46 ppb (6) N/A 9.0 μg/m3 (38) 38.0
 
July 20, 2021, noon 31.7 ppb (30) 16.7 ppb (16) N/A 15.0 ppb (15) N/A N/A N/A 0.42 ppb (5) N/A 7.0 μg/m3 (30) 30.0
 
July 20, 2021, 11 a.m. 19.0 ppb (18) 9.7 ppb (10) N/A 9.0 ppb (9) N/A N/A N/A 0.3 ppb (4) N/A 11.0 μg/m3 (46) 46.0
 
July 20, 2021, 10 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 20, 2021, 9 a.m. 14.3 ppb (14) 4.6 ppb (5) N/A 10.0 ppb (10) N/A N/A N/A 0.28 ppb (4) N/A 12.0 μg/m3 (50) 50.0
 
July 20, 2021, 8 a.m. 13.2 ppb (13) 4.3 ppb (5) N/A 9.0 ppb (9) N/A N/A N/A 0.27 ppb (4) N/A 11.0 μg/m3 (46) 46.0
 
July 20, 2021, 7 a.m. 11.2 ppb (11) 4.9 ppb (5) N/A 6.0 ppb (6) N/A N/A N/A 0.25 ppb (3) N/A 11.0 μg/m3 (46) 46.0
 
July 20, 2021, 6 a.m. 13.3 ppb (13) 5.3 ppb (5) N/A 8.0 ppb (8) N/A N/A N/A 0.29 ppb (4) N/A 6.0 μg/m3 (25) 25.0
 
July 20, 2021, 5 a.m. 13.5 ppb (13) 5.3 ppb (5) N/A 8.0 ppb (8) N/A N/A N/A 0.32 ppb (4) N/A 10.0 μg/m3 (42) 42.0
 
July 20, 2021, 4 a.m. 18.0 ppb (17) 7.1 ppb (7) 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
 
July 20, 2021, 3 a.m. 11.2 ppb (11) 4.0 ppb (4) N/A 7.0 ppb (7) N/A N/A N/A 0.31 ppb (4) N/A 9.0 μg/m3 (38) 38.0
 
July 20, 2021, 2 a.m. 16.9 ppb (16) 7.6 ppb (8) N/A 9.0 ppb (9) N/A N/A N/A 0.53 ppb (6) N/A 11.0 μg/m3 (46) 46.0
 
July 20, 2021, 1 a.m. 19.9 ppb (19) 9.2 ppb (9) N/A 11.0 ppb (11) N/A N/A N/A 0.68 ppb (8) N/A 9.0 μg/m3 (38) 38.0
 
July 20, 2021, midnight 13.8 ppb (14) 5.3 ppb (5) N/A 9.0 ppb (9) N/A N/A N/A 0.4 ppb (5) N/A 11.0 μg/m3 (46) 46.0
 
July 19, 2021, 11 p.m. 20.6 ppb (20) 7.3 ppb (7) N/A 13.0 ppb (13) N/A N/A N/A 0.41 ppb (5) N/A 11.0 μg/m3 (46) 46.0
 
July 19, 2021, 10 p.m. 31.1 ppb (30) 11.4 ppb (11) N/A 20.0 ppb (19) N/A N/A N/A 0.51 ppb (6) N/A 14.0 μg/m3 (55) 55.0
 
July 19, 2021, 9 p.m. 32.4 ppb (31) 11.6 ppb (11) N/A 21.0 ppb (20) N/A N/A N/A 0.5 ppb (6) N/A 11.0 μg/m3 (46) 46.0
 
July 19, 2021, 8 p.m. 27.5 ppb (26) 8.8 ppb (9) N/A 19.0 ppb (18) N/A N/A N/A 0.44 ppb (5) N/A 8.0 μg/m3 (34) 34.0
 
July 19, 2021, 7 p.m. 45.0 ppb (43) 19.1 ppb (19) N/A 26.0 ppb (25) N/A N/A N/A 0.68 ppb (8) N/A 15.0 μg/m3 (58) 58.0
 
July 19, 2021, 6 p.m. 40.2 ppb (38) 15.9 ppb (15) N/A 24.0 ppb (23) N/A N/A N/A 0.58 ppb (7) N/A 13.0 μg/m3 (53) 53.0
 
July 19, 2021, 5 p.m. 36.0 ppb (34) 16.3 ppb (16) N/A 20.0 ppb (19) N/A N/A N/A 0.48 ppb (6) N/A 10.0 μg/m3 (42) 42.0
 
July 19, 2021, 4 p.m. 37.9 ppb (36) 17.2 ppb (17) N/A 21.0 ppb (20) N/A N/A N/A 0.5 ppb (6) N/A 17.0 μg/m3 (62) 62.0
 
July 19, 2021, 3 p.m. 32.1 ppb (31) 16.2 ppb (16) N/A 16.0 ppb (16) N/A N/A N/A 0.49 ppb (6) N/A 12.0 μg/m3 (50) 50.0
 
July 19, 2021, 2 p.m. 18.9 ppb (18) 6.5 ppb (7) N/A 12.0 ppb (12) N/A N/A N/A 0.34 ppb (4) N/A 10.0 μg/m3 (42) 42.0
 
July 19, 2021, 1 p.m. 36.0 ppb (34) 16.7 ppb (16) N/A 19.0 ppb (18) N/A N/A N/A 0.5 ppb (6) N/A 6.0 μg/m3 (25) 34.0
 
July 19, 2021, noon 32.5 ppb (31) 11.2 ppb (11) N/A 21.0 ppb (20) N/A N/A N/A 0.47 ppb (6) N/A 8.0 μg/m3 (34) 34.0
 
July 19, 2021, 11 a.m. 15.3 ppb (15) 1.9 ppb (2) N/A 13.0 ppb (13) N/A N/A N/A 0.31 ppb (4) N/A 8.0 μg/m3 (34) 34.0
 
July 19, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 7.0 μg/m3 (30) 30.0
 
July 19, 2021, 9 a.m. 9.8 ppb (10) 0.3 ppb (1) N/A 10.0 ppb (10) N/A N/A N/A 0.24 ppb (3) N/A 9.0 μg/m3 (38) 38.0
 
July 19, 2021, 8 a.m. 8.1 ppb (8) 0.2 ppb (1) N/A 8.0 ppb (8) N/A N/A N/A 0.25 ppb (3) N/A 10.0 μg/m3 (42) 42.0
 
July 19, 2021, 7 a.m. 5.4 ppb (6) 0.1 ppb (1) N/A 5.0 ppb (5) N/A N/A N/A 0.24 ppb (3) N/A 7.0 μg/m3 (30) 30.0
 
July 19, 2021, 6 a.m. 9.9 ppb (10) 2.5 ppb (3) N/A 7.0 ppb (7) N/A N/A N/A 0.34 ppb (4) N/A 11.0 μg/m3 (46) 46.0
 
July 19, 2021, 5 a.m. 10.8 ppb (11) 2.8 ppb (3) N/A 8.0 ppb (8) N/A N/A N/A 0.42 ppb (5) N/A 11.0 μg/m3 (46) 46.0
 
July 19, 2021, 4 a.m. 12.7 ppb (12) 3.5 ppb (4) N/A 9.0 ppb (9) N/A N/A N/A 0.42 ppb (5) N/A 7.0 μg/m3 (30) 30.0
 
July 19, 2021, 3 a.m. 11.7 ppb (12) 3.4 ppb (4) N/A 8.0 ppb (8) N/A N/A N/A 0.46 ppb (6) N/A 9.0 μg/m3 (38) 38.0
 
July 19, 2021, 2 a.m. 15.0 ppb (15) 4.2 ppb (4) N/A 11.0 ppb (11) N/A N/A N/A 0.72 ppb (8) N/A 10.0 μg/m3 (42) 42.0
 
July 19, 2021, 1 a.m. 6.0 ppb (6) 1.0 ppb (1) N/A 5.0 ppb (5) N/A N/A N/A 0.29 ppb (4) N/A 3.0 μg/m3 (13) 13.0
 
July 19, 2021, midnight 7.1 ppb (7) 1.1 ppb (2) N/A 6.0 ppb (6) N/A N/A N/A 0.35 ppb (4) N/A 7.0 μg/m3 (30) 30.0
 
July 18, 2021, 11 p.m. 11.5 ppb (11) 2.4 ppb (3) N/A 9.0 ppb (9) N/A N/A N/A 0.52 ppb (6) N/A 10.0 μg/m3 (42) 42.0
 
July 18, 2021, 10 p.m. 14.8 ppb (14) 4.6 ppb (5) N/A 10.0 ppb (10) N/A N/A N/A 0.61 ppb (7) N/A 10.0 μg/m3 (42) 42.0
 
July 18, 2021, 9 p.m. 15.4 ppb (15) 3.7 ppb (4) N/A 12.0 ppb (12) N/A N/A N/A 0.56 ppb (7) N/A 13.0 μg/m3 (53) 53.0
 
July 18, 2021, 8 p.m. 13.6 ppb (13) 3.5 ppb (4) N/A 10.0 ppb (10) N/A N/A N/A 0.66 ppb (8) N/A 7.0 μg/m3 (30) 30.0
 
July 18, 2021, 7 p.m. 15.8 ppb (15) 4.2 ppb (4) N/A 12.0 ppb (12) N/A N/A N/A 0.59 ppb (7) N/A 9.0 μg/m3 (38) 38.0
 
July 18, 2021, 6 p.m. 13.9 ppb (14) 3.5 ppb (4) N/A 10.0 ppb (10) N/A N/A N/A 0.6 ppb (7) N/A 13.0 μg/m3 (53) 53.0
 
July 18, 2021, 5 p.m. 10.3 ppb (10) 2.7 ppb (3) N/A 8.0 ppb (8) N/A N/A N/A 0.46 ppb (6) N/A 13.0 μg/m3 (53) 53.0
 
July 18, 2021, 4 p.m. 9.5 ppb (9) 2.9 ppb (3) N/A 7.0 ppb (7) N/A N/A N/A 0.4 ppb (5) N/A 7.0 μg/m3 (30) 30.0
 
July 18, 2021, 3 p.m. 8.4 ppb (8) 2.3 ppb (3) N/A 6.0 ppb (6) N/A N/A N/A 0.29 ppb (4) N/A 12.0 μg/m3 (50) 50.0
 
July 18, 2021, 2 p.m. 9.3 ppb (9) 2.9 ppb (3) N/A 6.0 ppb (6) N/A N/A N/A 0.31 ppb (4) N/A 5.0 μg/m3 (21) 21.0
 
July 18, 2021, 1 p.m. 13.5 ppb (13) 3.4 ppb (4) 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
 
July 18, 2021, noon 7.0 ppb (7) 0.1 ppb (1) N/A 7.0 ppb (7) N/A N/A N/A 0.26 ppb (4) N/A 9.0 μg/m3 (38) 38.0
 
July 18, 2021, 11 a.m. 8.4 ppb (8) 0.3 ppb (1) N/A 8.0 ppb (8) N/A N/A N/A 0.26 ppb (4) N/A 6.0 μg/m3 (25) 25.0
 
July 18, 2021, 10 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 18, 2021, 9 a.m. 12.5 ppb (12) 2.7 ppb (3) N/A 10.0 ppb (10) N/A N/A N/A 0.36 ppb (5) N/A 9.0 μg/m3 (38) 38.0
 
July 18, 2021, 8 a.m. 14.8 ppb (14) 2.4 ppb (3) N/A 12.0 ppb (12) N/A N/A N/A 0.49 ppb (6) N/A 8.0 μg/m3 (34) 34.0
 
July 18, 2021, 7 a.m. 14.8 ppb (14) 2.5 ppb (3) N/A 12.0 ppb (12) N/A N/A N/A 0.55 ppb (7) N/A 9.0 μg/m3 (38) 38.0
 
July 18, 2021, 6 a.m. 12.7 ppb (12) 1.5 ppb (2) N/A 11.0 ppb (11) N/A N/A N/A 0.48 ppb (6) N/A 7.0 μg/m3 (30) 30.0
 
July 18, 2021, 5 a.m. 10.0 ppb (10) 1.1 ppb (2) N/A 9.0 ppb (9) N/A N/A N/A 0.38 ppb (5) N/A 8.0 μg/m3 (34) 34.0
 
July 18, 2021, 4 a.m. 12.2 ppb (12) 3.1 ppb (3) N/A 9.0 ppb (9) N/A N/A N/A 0.47 ppb (6) N/A 8.0 μg/m3 (34) 34.0
 
July 18, 2021, 3 a.m. 13.9 ppb (14) 4.4 ppb (5) N/A 10.0 ppb (10) N/A N/A N/A 0.56 ppb (7) N/A 12.0 μg/m3 (50) 50.0