ID: 2975

AQSQID: 060010015

Site Name: Pleasanton - Owens Ct.

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

Updated: Sept. 19, 2020, 2:39 p.m.

Location: Pleasanton (Dougherty), CA

Reporting: True, Located: True

Current AQI: 13.0

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
Sept. 19, 2020, 1 p.m. 14.1 ppb (13) 3.8 ppb (4) N/A 10.0 ppb (9) N/A N/A N/A 0.48 ppb (5) N/A 3.0 μg/m3 (12) 13.0
 
Sept. 19, 2020, noon 3.8 ppb (4) 0.4 ppb (0) N/A 3.0 ppb (3) N/A N/A N/A 0.39 ppb (4) N/A 3.0 μg/m3 (12) 12.0
 
Sept. 19, 2020, 11 a.m. 2.0 ppb (2) 0.2 ppb (0) N/A 2.0 ppb (2) N/A N/A N/A 0.36 ppb (4) N/A 3.0 μg/m3 (12) 12.0
 
Sept. 19, 2020, 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 (8) 8.0
 
Sept. 19, 2020, 9 a.m. 2.6 ppb (2) 0.2 ppb (0) N/A 2.0 ppb (2) N/A N/A N/A 0.39 ppb (4) N/A 6.0 μg/m3 (25) 25.0
 
Sept. 19, 2020, 8 a.m. 3.7 ppb (3) 0.3 ppb (0) N/A 3.0 ppb (3) N/A N/A N/A 0.41 ppb (5) N/A 10.0 μg/m3 (42) 42.0
 
Sept. 19, 2020, 7 a.m. 5.2 ppb (5) 0.9 ppb (1) N/A 4.0 ppb (4) N/A N/A N/A 0.43 ppb (5) N/A 7.0 μg/m3 (29) 29.0
 
Sept. 19, 2020, 6 a.m. 4.4 ppb (4) 0.8 ppb (1) N/A 4.0 ppb (4) N/A N/A N/A 0.45 ppb (5) N/A 8.0 μg/m3 (33) 33.0
 
Sept. 19, 2020, 5 a.m. 6.4 ppb (6) 1.3 ppb (1) N/A 5.0 ppb (5) N/A N/A N/A 0.5 ppb (6) N/A 13.0 μg/m3 (52) 52.0
 
Sept. 19, 2020, 4 a.m. 4.3 ppb (4) 0.4 ppb (0) N/A 4.0 ppb (4) N/A N/A N/A 0.48 ppb (5) N/A 15.0 μg/m3 (56) 56.0
 
Sept. 19, 2020, 3 a.m. 13.2 ppb (12) 3.0 ppb (3) N/A 10.0 ppb (9) N/A N/A N/A 0.69 ppb (8) N/A 8.0 μg/m3 (33) 33.0
 
Sept. 19, 2020, 2 a.m. 13.7 ppb (13) 3.8 ppb (4) N/A 10.0 ppb (9) N/A N/A N/A 0.71 ppb (8) N/A 11.0 μg/m3 (46) 46.0
 
Sept. 19, 2020, 1 a.m. 9.4 ppb (9) 1.8 ppb (2) N/A 8.0 ppb (7) N/A N/A N/A 0.63 ppb (7) N/A 11.0 μg/m3 (46) 46.0
 
Sept. 19, 2020, midnight 13.4 ppb (12) 3.5 ppb (3) N/A 10.0 ppb (9) N/A N/A N/A 0.69 ppb (8) N/A 12.0 μg/m3 (50) 50.0
 
Sept. 18, 2020, 11 p.m. 16.6 ppb (15) 5.0 ppb (5) N/A 12.0 ppb (11) N/A N/A N/A 0.67 ppb (7) N/A 10.0 μg/m3 (42) 42.0
 
Sept. 18, 2020, 10 p.m. 16.5 ppb (15) 5.1 ppb (5) N/A 11.0 ppb (10) N/A N/A N/A 0.65 ppb (7) N/A 9.0 μg/m3 (38) 38.0
 
Sept. 18, 2020, 9 p.m. 13.6 ppb (13) 4.1 ppb (4) N/A 10.0 ppb (9) N/A N/A N/A 0.54 ppb (6) N/A 8.0 μg/m3 (33) 33.0
 
Sept. 18, 2020, 8 p.m. 12.9 ppb (12) 3.7 ppb (3) N/A 9.0 ppb (8) N/A N/A N/A 0.57 ppb (6) N/A 5.0 μg/m3 (21) 21.0
 
Sept. 18, 2020, 7 p.m. 12.1 ppb (11) 3.5 ppb (3) N/A 9.0 ppb (8) N/A N/A N/A 0.54 ppb (6) N/A 6.0 μg/m3 (25) 25.0
 
Sept. 18, 2020, 6 p.m. 15.1 ppb (14) 5.1 ppb (5) N/A 10.0 ppb (9) N/A N/A N/A 0.5 ppb (6) N/A 7.0 μg/m3 (29) 29.0
 
Sept. 18, 2020, 5 p.m. 25.3 ppb (23) 11.0 ppb (10) N/A 14.0 ppb (13) N/A N/A N/A 0.51 ppb (6) N/A 4.0 μg/m3 (17) 23.0
 
Sept. 18, 2020, 4 p.m. 18.4 ppb (17) 6.5 ppb (6) N/A 12.0 ppb (11) N/A N/A N/A 0.52 ppb (6) N/A 5.0 μg/m3 (21) 21.0
 
Sept. 18, 2020, 3 p.m. 39.6 ppb (37) 19.4 ppb (18) N/A 20.0 ppb (19) N/A N/A N/A 0.61 ppb (7) N/A 5.0 μg/m3 (21) 37.0
 
Sept. 18, 2020, 2 p.m. 42.2 ppb (39) 19.3 ppb (18) N/A 23.0 ppb (21) N/A N/A N/A 0.69 ppb (8) N/A 5.0 μg/m3 (21) 39.0
 
Sept. 18, 2020, 1 p.m. 16.2 ppb (15) 3.6 ppb (3) N/A 13.0 ppb (12) N/A N/A N/A 0.41 ppb (5) N/A 4.0 μg/m3 (17) 17.0
 
Sept. 18, 2020, noon 5.0 ppb (5) 0.8 ppb (1) N/A 4.0 ppb (4) N/A N/A N/A 0.32 ppb (4) N/A 4.0 μg/m3 (17) 17.0
 
Sept. 18, 2020, 11 a.m. 9.6 ppb (9) 2.5 ppb (2) N/A 7.0 ppb (6) N/A N/A N/A 0.35 ppb (4) N/A 7.0 μg/m3 (29) 29.0
 
Sept. 18, 2020, 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
 
Sept. 18, 2020, 9 a.m. 4.4 ppb (4) 0.5 ppb (0) N/A 4.0 ppb (4) N/A N/A N/A 0.35 ppb (4) N/A 8.0 μg/m3 (33) 33.0
 
Sept. 18, 2020, 8 a.m. 4.1 ppb (4) 0.8 ppb (1) N/A 3.0 ppb (3) N/A N/A N/A 0.35 ppb (4) N/A 12.0 μg/m3 (50) 50.0
 
Sept. 18, 2020, 7 a.m. 8.4 ppb (8) 1.9 ppb (2) N/A 7.0 ppb (6) N/A N/A N/A 0.38 ppb (4) N/A 7.0 μg/m3 (29) 29.0
 
Sept. 18, 2020, 6 a.m. 4.1 ppb (4) 0.5 ppb (0) N/A 4.0 ppb (4) N/A N/A N/A 0.34 ppb (4) N/A 11.0 μg/m3 (46) 46.0
 
Sept. 18, 2020, 5 a.m. 7.8 ppb (7) 1.8 ppb (2) N/A 6.0 ppb (6) N/A N/A N/A 0.4 ppb (4) N/A 7.0 μg/m3 (29) 29.0
 
Sept. 18, 2020, 4 a.m. 9.1 ppb (8) 2.4 ppb (2) N/A 7.0 ppb (6) N/A N/A N/A 0.44 ppb (5) N/A 7.0 μg/m3 (29) 29.0
 
Sept. 18, 2020, 3 a.m. 14.0 ppb (13) 3.2 ppb (3) N/A 11.0 ppb (10) N/A N/A N/A 0.5 ppb (6) N/A 6.0 μg/m3 (25) 25.0
 
Sept. 18, 2020, 2 a.m. 18.0 ppb (17) 5.7 ppb (5) N/A 12.0 ppb (11) N/A N/A N/A 0.57 ppb (6) N/A 5.0 μg/m3 (21) 21.0
 
Sept. 18, 2020, 1 a.m. 14.1 ppb (13) 3.9 ppb (4) N/A 10.0 ppb (9) N/A N/A N/A 0.57 ppb (6) N/A 8.0 μg/m3 (33) 33.0
 
Sept. 18, 2020, midnight 10.4 ppb (10) 3.0 ppb (3) N/A 7.0 ppb (6) N/A N/A N/A 0.48 ppb (5) N/A 5.0 μg/m3 (21) 21.0
 
Sept. 17, 2020, 11 p.m. 10.8 ppb (10) 3.2 ppb (3) N/A 8.0 ppb (7) N/A N/A N/A 0.46 ppb (5) N/A 4.0 μg/m3 (17) 17.0
 
Sept. 17, 2020, 10 p.m. 16.8 ppb (16) 6.0 ppb (6) N/A 11.0 ppb (10) N/A N/A N/A 0.52 ppb (6) N/A 3.0 μg/m3 (12) 16.0
 
Sept. 17, 2020, 9 p.m. 29.9 ppb (28) 14.3 ppb (13) N/A 16.0 ppb (15) N/A N/A N/A 0.7 ppb (8) N/A 6.0 μg/m3 (25) 28.0
 
Sept. 17, 2020, 8 p.m. 30.5 ppb (28) 15.6 ppb (14) N/A 15.0 ppb (14) N/A N/A N/A 0.6 ppb (7) N/A 9.0 μg/m3 (38) 38.0
 
Sept. 17, 2020, 7 p.m. 37.9 ppb (35) 22.0 ppb (20) N/A 16.0 ppb (15) N/A N/A N/A 0.74 ppb (8) N/A 7.0 μg/m3 (29) 35.0
 
Sept. 17, 2020, 6 p.m. 35.6 ppb (33) 21.7 ppb (20) N/A 14.0 ppb (13) N/A N/A N/A 0.57 ppb (6) N/A 7.0 μg/m3 (29) 33.0
 
Sept. 17, 2020, 5 p.m. 44.2 ppb (41) 31.5 ppb (29) N/A 13.0 ppb (12) N/A N/A N/A 0.59 ppb (7) N/A 5.0 μg/m3 (21) 41.0
 
Sept. 17, 2020, 4 p.m. 34.3 ppb (32) 23.2 ppb (21) N/A 11.0 ppb (10) N/A N/A N/A 0.49 ppb (5) N/A 0.0 μg/m3 (0) 32.0
 
Sept. 17, 2020, 3 p.m. 16.5 ppb (15) 8.8 ppb (8) N/A 8.0 ppb (7) N/A N/A N/A 0.37 ppb (4) N/A 0.0 μg/m3 (0) 15.0
 
Sept. 17, 2020, 2 p.m. 8.7 ppb (8) 2.6 ppb (2) N/A 6.0 ppb (6) N/A N/A N/A 0.34 ppb (4) N/A 0.0 μg/m3 (0) 8.0
 
Sept. 17, 2020, 1 p.m. 9.5 ppb (9) 2.9 ppb (3) N/A 7.0 ppb (6) N/A N/A N/A 0.35 ppb (4) N/A 1.0 μg/m3 (4) 9.0
 
Sept. 17, 2020, noon 5.8 ppb (5) 0.8 ppb (1) N/A 5.0 ppb (5) N/A N/A N/A 0.28 ppb (3) N/A 1.0 μg/m3 (4) 5.0
 
Sept. 17, 2020, 11 a.m. 4.9 ppb (5) 0.8 ppb (1) N/A 4.0 ppb (4) N/A N/A N/A 0.27 ppb (3) N/A 1.0 μg/m3 (4) 5.0
 
Sept. 17, 2020, 10 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
 
Sept. 17, 2020, 9 a.m. 8.7 ppb (8) 1.8 ppb (2) N/A 7.0 ppb (6) N/A N/A N/A 0.3 ppb (3) N/A 6.0 μg/m3 (25) 25.0
 
Sept. 17, 2020, 8 a.m. 10.8 ppb (10) 4.6 ppb (4) N/A 6.0 ppb (6) N/A N/A N/A 0.34 ppb (4) N/A 6.0 μg/m3 (25) 25.0
 
Sept. 17, 2020, 7 a.m. 15.1 ppb (14) 7.1 ppb (7) N/A 8.0 ppb (7) N/A N/A N/A 0.36 ppb (4) N/A 5.0 μg/m3 (21) 21.0
 
Sept. 17, 2020, 6 a.m. 14.4 ppb (13) 7.0 ppb (6) N/A 7.0 ppb (6) N/A N/A N/A 0.38 ppb (4) N/A 3.0 μg/m3 (12) 13.0
 
Sept. 17, 2020, 5 a.m. 13.9 ppb (13) 6.1 ppb (6) N/A 8.0 ppb (7) N/A N/A N/A 0.36 ppb (4) N/A 1.0 μg/m3 (4) 13.0
 
Sept. 17, 2020, 4 a.m. 19.3 ppb (18) 10.8 ppb (10) N/A 9.0 ppb (8) N/A N/A N/A 0.55 ppb (6) N/A 3.0 μg/m3 (12) 18.0
 
Sept. 17, 2020, 3 a.m. 17.1 ppb (16) 7.3 ppb (7) N/A 10.0 ppb (9) N/A N/A N/A 0.5 ppb (6) N/A 2.0 μg/m3 (8) 16.0
 
Sept. 17, 2020, 2 a.m. 15.1 ppb (14) 5.6 ppb (5) N/A 10.0 ppb (9) N/A N/A N/A 0.5 ppb (6) N/A 5.0 μg/m3 (21) 21.0
 
Sept. 17, 2020, 1 a.m. 12.8 ppb (12) 4.5 ppb (4) N/A 8.0 ppb (7) N/A N/A N/A 0.51 ppb (6) N/A 7.0 μg/m3 (29) 29.0
 
Sept. 17, 2020, midnight 14.7 ppb (14) 5.0 ppb (5) N/A 10.0 ppb (9) N/A N/A N/A 0.55 ppb (6) N/A 9.0 μg/m3 (38) 38.0
 
Sept. 16, 2020, 11 p.m. 16.3 ppb (15) 4.7 ppb (4) N/A 12.0 ppb (11) N/A N/A N/A 0.52 ppb (6) N/A 10.0 μg/m3 (42) 42.0
 
Sept. 16, 2020, 10 p.m. 14.7 ppb (14) 3.3 ppb (3) N/A 11.0 ppb (10) N/A N/A N/A 0.52 ppb (6) N/A 12.0 μg/m3 (50) 50.0
 
Sept. 16, 2020, 9 p.m. 18.1 ppb (17) 4.6 ppb (4) N/A 13.0 ppb (12) N/A N/A N/A 0.53 ppb (6) N/A 17.0 μg/m3 (61) 61.0
 
Sept. 16, 2020, 8 p.m. 25.2 ppb (23) 8.4 ppb (8) N/A 17.0 ppb (16) N/A N/A N/A 0.66 ppb (7) N/A 9.0 μg/m3 (38) 38.0
 
Sept. 16, 2020, 7 p.m. 33.6 ppb (31) 16.0 ppb (15) N/A 18.0 ppb (17) N/A N/A N/A 0.64 ppb (7) N/A 12.0 μg/m3 (50) 50.0
 
Sept. 16, 2020, 6 p.m. 31.9 ppb (30) 17.1 ppb (16) N/A 15.0 ppb (14) N/A N/A N/A 0.58 ppb (6) N/A N/A 30.0
 
Sept. 16, 2020, 5 p.m. 35.3 ppb (33) 21.8 ppb (20) N/A 14.0 ppb (13) N/A N/A N/A 0.52 ppb (6) N/A 7.0 μg/m3 (29) 33.0
 
Sept. 16, 2020, 4 p.m. 47.0 ppb (44) 31.2 ppb (29) N/A 16.0 ppb (15) N/A N/A N/A 0.46 ppb (5) N/A 7.0 μg/m3 (29) 44.0
 
Sept. 16, 2020, 3 p.m. 8.7 ppb (8) 2.8 ppb (3) N/A 6.0 ppb (6) N/A N/A N/A 0.33 ppb (4) N/A 2.0 μg/m3 (8) 8.0
 
Sept. 16, 2020, 2 p.m. 15.4 ppb (14) 5.2 ppb (5) N/A 10.0 ppb (9) N/A N/A N/A 0.4 ppb (4) N/A 5.0 μg/m3 (21) 21.0
 
Sept. 16, 2020, 1 p.m. 7.7 ppb (7) 1.1 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
 
Sept. 16, 2020, noon 8.9 ppb (8) 1.0 ppb (1) 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
 
Sept. 16, 2020, 11 a.m. 6.7 ppb (6) 0.6 ppb (1) N/A 6.0 ppb (6) N/A N/A N/A 0.32 ppb (4) N/A 6.0 μg/m3 (25) 25.0
 
Sept. 16, 2020, 10 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
 
Sept. 16, 2020, 9 a.m. 3.9 ppb (4) 0.6 ppb (1) N/A 3.0 ppb (3) N/A N/A N/A 0.29 ppb (3) N/A 4.0 μg/m3 (17) 17.0
 
Sept. 16, 2020, 8 a.m. 4.4 ppb (4) 0.4 ppb (0) N/A 4.0 ppb (4) N/A N/A N/A 0.3 ppb (3) N/A 8.0 μg/m3 (33) 33.0
 
Sept. 16, 2020, 7 a.m. 7.5 ppb (7) 1.5 ppb (1) N/A 6.0 ppb (6) N/A N/A N/A 0.34 ppb (4) N/A 6.0 μg/m3 (25) 25.0
 
Sept. 16, 2020, 6 a.m. 16.9 ppb (16) 7.4 ppb (7) 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
 
Sept. 16, 2020, 5 a.m. 17.8 ppb (16) 6.9 ppb (6) N/A 11.0 ppb (10) N/A N/A N/A 0.43 ppb (5) N/A 10.0 μg/m3 (42) 42.0
 
Sept. 16, 2020, 4 a.m. 16.2 ppb (15) 4.9 ppb (5) N/A 11.0 ppb (10) N/A N/A N/A 0.43 ppb (5) N/A 10.0 μg/m3 (42) 42.0
 
Sept. 16, 2020, 3 a.m. 14.4 ppb (13) 4.0 ppb (4) N/A 10.0 ppb (9) N/A N/A N/A 0.37 ppb (4) N/A 7.0 μg/m3 (29) 29.0
 
Sept. 16, 2020, 2 a.m. 14.0 ppb (13) 3.6 ppb (3) N/A 10.0 ppb (9) N/A N/A N/A 0.46 ppb (5) N/A 10.0 μg/m3 (42) 42.0
 
Sept. 16, 2020, 1 a.m. 23.6 ppb (22) 7.3 ppb (7) N/A 16.0 ppb (15) N/A N/A N/A 0.67 ppb (7) N/A 10.0 μg/m3 (42) 42.0
 
Sept. 16, 2020, midnight 31.2 ppb (29) 10.8 ppb (10) N/A 20.0 ppb (19) N/A N/A N/A 0.94 ppb (10) N/A 12.0 μg/m3 (50) 50.0
 
Sept. 15, 2020, 11 p.m. 36.4 ppb (34) 11.8 ppb (11) N/A 25.0 ppb (23) N/A N/A N/A 0.93 ppb (10) N/A 21.0 μg/m3 (69) 69.0
 
Sept. 15, 2020, 10 p.m. 26.1 ppb (24) 6.6 ppb (6) N/A 20.0 ppb (19) N/A N/A N/A 0.73 ppb (8) N/A 25.0 μg/m3 (78) 78.0
 
Sept. 15, 2020, 9 p.m. 30.4 ppb (28) 9.4 ppb (9) N/A 21.0 ppb (19) N/A N/A N/A 0.75 ppb (8) N/A 30.0 μg/m3 (88) 88.0
 
Sept. 15, 2020, 8 p.m. 24.6 ppb (23) 6.7 ppb (6) N/A 18.0 ppb (17) N/A N/A N/A 0.8 ppb (9) N/A 38.0 μg/m3 (106) 106.0
 
Sept. 15, 2020, 7 p.m. 24.4 ppb (23) 7.7 ppb (7) N/A 17.0 ppb (16) N/A N/A N/A 0.76 ppb (8) N/A 35.0 μg/m3 (99) 99.0
 
Sept. 15, 2020, 6 p.m. 25.3 ppb (23) 8.7 ppb (8) N/A 17.0 ppb (16) N/A N/A N/A 0.7 ppb (8) N/A 36.0 μg/m3 (101) 101.0
 
Sept. 15, 2020, 5 p.m. 33.4 ppb (31) 14.4 ppb (13) N/A 19.0 ppb (18) N/A N/A N/A 0.7 ppb (8) N/A 35.0 μg/m3 (99) 99.0
 
Sept. 15, 2020, 4 p.m. 12.1 ppb (11) 3.1 ppb (3) N/A 9.0 ppb (8) N/A N/A N/A 0.61 ppb (7) N/A 39.0 μg/m3 (109) 109.0
 
Sept. 15, 2020, 3 p.m. 13.3 ppb (12) 2.5 ppb (2) N/A 11.0 ppb (10) N/A N/A N/A 0.72 ppb (8) N/A 52.0 μg/m3 (141) 141.0
 
Sept. 15, 2020, 2 p.m. 36.4 ppb (34) 16.7 ppb (15) N/A 20.0 ppb (19) N/A N/A N/A 0.91 ppb (10) N/A 54.0 μg/m3 (146) 146.0
 
Sept. 15, 2020, 1 p.m. 40.6 ppb (38) 19.4 ppb (18) N/A 21.0 ppb (19) N/A N/A N/A 1.03 ppb (11) N/A 60.0 μg/m3 (152) 152.0
 
Sept. 15, 2020, noon 9.8 ppb (9) 0.3 ppb (0) N/A 10.0 ppb (9) N/A N/A N/A 0.86 ppb (10) N/A 64.0 μg/m3 (154) 154.0
 
Sept. 15, 2020, 11 a.m. 7.4 ppb (7) 0.3 ppb (0) N/A 7.0 ppb (6) N/A N/A N/A 0.7 ppb (8) N/A 50.0 μg/m3 (136) 136.0
 
Sept. 15, 2020, 10 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 74.0 μg/m3 (160) 160.0
 
Sept. 15, 2020, 9 a.m. 7.7 ppb (7) 0.2 ppb (0) N/A 8.0 ppb (7) N/A N/A N/A 0.78 ppb (9) N/A 63.0 μg/m3 (154) 154.0
 
Sept. 15, 2020, 8 a.m. 8.9 ppb (8) 0.6 ppb (1) N/A 8.0 ppb (7) N/A N/A N/A 0.75 ppb (8) N/A 60.0 μg/m3 (152) 152.0
 
Sept. 15, 2020, 7 a.m. 12.6 ppb (12) 0.5 ppb (0) N/A 12.0 ppb (11) N/A N/A N/A 0.9 ppb (10) N/A 76.0 μg/m3 (161) 161.0
 
Sept. 15, 2020, 6 a.m. 15.4 ppb (14) 2.7 ppb (3) N/A 13.0 ppb (12) N/A N/A N/A 0.88 ppb (10) N/A 73.0 μg/m3 (159) 159.0
 
Sept. 15, 2020, 5 a.m. 15.8 ppb (15) 1.6 ppb (1) N/A 14.0 ppb (13) N/A N/A N/A 1.12 ppb (12) N/A 92.0 μg/m3 (169) 169.0
 
Sept. 15, 2020, 4 a.m. 19.7 ppb (18) 1.9 ppb (2) N/A 18.0 ppb (17) N/A N/A N/A 1.16 ppb (13) N/A 101.0 μg/m3 (174) 174.0
 
Sept. 15, 2020, 3 a.m. 24.1 ppb (22) 4.2 ppb (4) N/A 20.0 ppb (19) N/A N/A N/A 1.22 ppb (14) N/A 95.0 μg/m3 (171) 171.0
 
Sept. 15, 2020, 2 a.m. 23.7 ppb (22) 3.3 ppb (3) N/A 20.0 ppb (19) N/A N/A N/A 1.29 ppb (14) N/A 99.0 μg/m3 (173) 173.0
 
Sept. 15, 2020, 1 a.m. 19.9 ppb (18) 1.5 ppb (1) N/A 18.0 ppb (17) N/A N/A N/A 1.35 ppb (15) N/A 101.0 μg/m3 (174) 174.0
 
Sept. 15, 2020, midnight 20.5 ppb (19) 1.8 ppb (2) N/A 19.0 ppb (18) N/A N/A N/A 1.33 ppb (15) N/A 91.0 μg/m3 (169) 169.0
 
Sept. 14, 2020, 11 p.m. 19.6 ppb (18) 1.6 ppb (1) N/A 18.0 ppb (17) N/A N/A N/A 1.26 ppb (14) N/A 89.0 μg/m3 (168) 168.0
 
Sept. 14, 2020, 10 p.m. 16.2 ppb (15) 1.0 ppb (1) N/A 15.0 ppb (14) N/A N/A N/A 1.15 ppb (13) N/A 84.0 μg/m3 (165) 165.0
 
Sept. 14, 2020, 9 p.m. 16.9 ppb (16) 1.5 ppb (1) N/A 15.0 ppb (14) N/A N/A N/A 1.27 ppb (14) N/A 106.0 μg/m3 (177) 177.0
 
Sept. 14, 2020, 8 p.m. 26.1 ppb (24) 4.2 ppb (4) N/A 22.0 ppb (20) N/A N/A N/A 1.36 ppb (15) N/A 109.0 μg/m3 (178) 178.0
 
Sept. 14, 2020, 7 p.m. 32.2 ppb (30) 7.3 ppb (7) N/A 25.0 ppb (23) N/A N/A N/A 1.51 ppb (17) N/A 125.0 μg/m3 (187) 187.0
 
Sept. 14, 2020, 6 p.m. 14.4 ppb (13) 2.3 ppb (2) N/A 12.0 ppb (11) N/A N/A N/A 1.39 ppb (15) N/A 128.0 μg/m3 (188) 188.0
 
Sept. 14, 2020, 5 p.m. 11.9 ppb (11) 2.0 ppb (2) N/A 10.0 ppb (9) N/A N/A N/A 1.36 ppb (15) N/A 138.0 μg/m3 (193) 193.0
 
Sept. 14, 2020, 4 p.m. 18.8 ppb (17) 4.6 ppb (4) N/A 14.0 ppb (13) N/A N/A N/A 1.4 ppb (16) N/A 137.0 μg/m3 (193) 193.0
 
Sept. 14, 2020, 3 p.m. 16.2 ppb (15) 3.6 ppb (3) N/A 13.0 ppb (12) N/A N/A N/A 1.44 ppb (16) N/A 133.0 μg/m3 (191) 191.0
 
Sept. 14, 2020, 2 p.m. 11.3 ppb (10) 2.7 ppb (3) N/A 9.0 ppb (8) N/A N/A N/A 1.41 ppb (16) N/A 135.0 μg/m3 (192) 192.0
 
Sept. 14, 2020, 1 p.m. 7.1 ppb (7) 1.0 ppb (1) N/A 6.0 ppb (6) N/A N/A N/A 1.38 ppb (15) N/A 125.0 μg/m3 (187) 187.0
 
Sept. 14, 2020, noon 8.0 ppb (7) 1.1 ppb (1) N/A 7.0 ppb (6) N/A N/A N/A 1.4 ppb (16) N/A 132.0 μg/m3 (190) 190.0
 
Sept. 14, 2020, 11 a.m. 9.7 ppb (9) 1.4 ppb (1) N/A 8.0 ppb (7) N/A N/A N/A 1.4 ppb (16) N/A 133.0 μg/m3 (191) 191.0
 
Sept. 14, 2020, 10 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 142.0 μg/m3 (196) 196.0
 
Sept. 14, 2020, 9 a.m. 6.7 ppb (6) 0.7 ppb (1) N/A 6.0 ppb (6) N/A N/A N/A 1.39 ppb (15) N/A 129.0 μg/m3 (189) 189.0
 
Sept. 14, 2020, 8 a.m. 9.5 ppb (9) 1.1 ppb (1) N/A 8.0 ppb (7) N/A N/A N/A 1.42 ppb (16) N/A 136.0 μg/m3 (192) 192.0
 
Sept. 14, 2020, 7 a.m. 8.9 ppb (8) 1.0 ppb (1) N/A 8.0 ppb (7) N/A N/A N/A 1.44 ppb (16) N/A 135.0 μg/m3 (192) 192.0
 
Sept. 14, 2020, 6 a.m. 11.5 ppb (11) 1.5 ppb (1) N/A 10.0 ppb (9) N/A N/A N/A 1.42 ppb (16) N/A 138.0 μg/m3 (193) 193.0
 
Sept. 14, 2020, 5 a.m. 13.9 ppb (13) 2.0 ppb (2) N/A 12.0 ppb (11) N/A N/A N/A 1.54 ppb (17) N/A 153.0 μg/m3 (202) 202.0
 
Sept. 14, 2020, 4 a.m. 14.9 ppb (14) 2.4 ppb (2) N/A 12.0 ppb (11) N/A N/A N/A 1.49 ppb (17) N/A 160.0 μg/m3 (210) 210.0
 
Sept. 14, 2020, 3 a.m. 17.3 ppb (16) 2.9 ppb (3) N/A 14.0 ppb (13) N/A N/A N/A 1.5 ppb (17) N/A 142.0 μg/m3 (196) 196.0
 
Sept. 14, 2020, 2 a.m. 19.0 ppb (18) 3.2 ppb (3) N/A 16.0 ppb (15) N/A N/A N/A 1.52 ppb (17) N/A 115.0 μg/m3 (181) 181.0
 
Sept. 14, 2020, 1 a.m. 17.5 ppb (16) 2.5 ppb (2) N/A 15.0 ppb (14) N/A N/A N/A 1.47 ppb (16) N/A 97.0 μg/m3 (172) 172.0
 
Sept. 14, 2020, midnight 17.5 ppb (16) 2.9 ppb (3) N/A 15.0 ppb (14) N/A N/A N/A 1.5 ppb (17) N/A 81.0 μg/m3 (163) 163.0
 
Sept. 13, 2020, 11 p.m. 11.7 ppb (11) 1.2 ppb (1) N/A 11.0 ppb (10) N/A N/A N/A 1.35 ppb (15) N/A 74.0 μg/m3 (160) 160.0
 
Sept. 13, 2020, 10 p.m. 11.5 ppb (11) 1.1 ppb (1) N/A 10.0 ppb (9) N/A N/A N/A 1.4 ppb (16) N/A 72.0 μg/m3 (159) 159.0
 
Sept. 13, 2020, 9 p.m. 10.7 ppb (10) 1.1 ppb (1) N/A 10.0 ppb (9) N/A N/A N/A 1.44 ppb (16) N/A 71.0 μg/m3 (158) 158.0
 
Sept. 13, 2020, 8 p.m. 14.1 ppb (13) 2.4 ppb (2) N/A 12.0 ppb (11) N/A N/A N/A 1.51 ppb (17) N/A 71.0 μg/m3 (158) 158.0
 
Sept. 13, 2020, 7 p.m. 13.0 ppb (12) 2.3 ppb (2) N/A 11.0 ppb (10) N/A N/A N/A 1.45 ppb (16) N/A 74.0 μg/m3 (160) 160.0
 
Sept. 13, 2020, 6 p.m. 12.4 ppb (11) 2.1 ppb (2) N/A 10.0 ppb (9) N/A N/A N/A 1.44 ppb (16) N/A 78.0 μg/m3 (162) 162.0
 
Sept. 13, 2020, 5 p.m. 13.1 ppb (12) 2.9 ppb (3) N/A 10.0 ppb (9) N/A N/A N/A 1.49 ppb (17) N/A 84.0 μg/m3 (165) 165.0
 
Sept. 13, 2020, 4 p.m. 15.3 ppb (14) 4.6 ppb (4) N/A 11.0 ppb (10) N/A N/A N/A 1.54 ppb (17) N/A 86.0 μg/m3 (166) 166.0
 
Sept. 13, 2020, 3 p.m. 18.1 ppb (17) 4.3 ppb (4) N/A 14.0 ppb (13) N/A N/A N/A 1.44 ppb (16) N/A 87.0 μg/m3 (167) 167.0
 
Sept. 13, 2020, 2 p.m. 14.7 ppb (14) 1.5 ppb (1) N/A 13.0 ppb (12) N/A N/A N/A 1.36 ppb (15) N/A 88.0 μg/m3 (167) 167.0
 
Sept. 13, 2020, 1 p.m. 11.9 ppb (11) 0.7 ppb (1) N/A 11.0 ppb (10) N/A N/A N/A 1.31 ppb (15) N/A 91.0 μg/m3 (169) 169.0
 
Sept. 13, 2020, noon 12.8 ppb (12) 0.7 ppb (1) N/A 12.0 ppb (11) N/A N/A N/A 1.27 ppb (14) N/A 94.0 μg/m3 (170) 170.0
 
Sept. 13, 2020, 11 a.m. 12.1 ppb (11) 0.7 ppb (1) N/A 11.0 ppb (10) N/A N/A N/A 1.24 ppb (14) N/A 92.0 μg/m3 (169) 169.0
 
Sept. 13, 2020, 10 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 92.0 μg/m3 (169) 169.0
 
Sept. 13, 2020, 9 a.m. 12.0 ppb (11) 0.7 ppb (1) N/A 11.0 ppb (10) N/A N/A N/A 1.25 ppb (14) N/A 92.0 μg/m3 (169) 169.0
 
Sept. 13, 2020, 8 a.m. 13.0 ppb (12) 0.7 ppb (1) N/A 12.0 ppb (11) N/A N/A N/A 1.23 ppb (14) N/A 93.0 μg/m3 (170) 170.0
 
Sept. 13, 2020, 7 a.m. 10.6 ppb (10) 0.6 ppb (1) N/A 10.0 ppb (9) N/A N/A N/A 1.23 ppb (14) N/A 98.0 μg/m3 (172) 172.0
 
Sept. 13, 2020, 6 a.m. 13.0 ppb (12) 0.6 ppb (1) N/A 12.0 ppb (11) N/A N/A N/A 1.31 ppb (15) N/A 93.0 μg/m3 (170) 170.0
 
Sept. 13, 2020, 5 a.m. 15.7 ppb (15) 0.6 ppb (1) N/A 15.0 ppb (14) N/A N/A N/A 1.38 ppb (15) N/A 90.0 μg/m3 (168) 168.0
 
Sept. 13, 2020, 4 a.m. 16.0 ppb (15) 0.6 ppb (1) N/A 15.0 ppb (14) N/A N/A N/A 1.44 ppb (16) N/A N/A 16.0
 
Sept. 13, 2020, 3 a.m. 23.0 ppb (21) 0.6 ppb (1) N/A 23.0 ppb (21) N/A N/A N/A 1.63 ppb (18) N/A 117.0 μg/m3 (182) 182.0
 
Sept. 13, 2020, 2 a.m. 9.6 ppb (9) 0.4 ppb (0) N/A 9.0 ppb (8) N/A N/A N/A 1.41 ppb (16) N/A 137.0 μg/m3 (193) 193.0
 
Sept. 13, 2020, 1 a.m. 15.1 ppb (14) 0.5 ppb (0) N/A 15.0 ppb (14) N/A N/A N/A 1.48 ppb (16) N/A 107.0 μg/m3 (177) 177.0
 
Sept. 13, 2020, midnight 20.0 ppb (19) 0.6 ppb (1) N/A 19.0 ppb (18) N/A N/A N/A 1.58 ppb (18) N/A 112.0 μg/m3 (180) 180.0
 
Sept. 12, 2020, 11 p.m. 12.2 ppb (11) 0.5 ppb (0) N/A 12.0 ppb (11) N/A N/A N/A 1.54 ppb (17) N/A 152.0 μg/m3 (202) 202.0
 
Sept. 12, 2020, 10 p.m. 6.5 ppb (6) 0.3 ppb (0) N/A 6.0 ppb (6) N/A N/A N/A 1.39 ppb (15) N/A 147.0 μg/m3 (198) 198.0
 
Sept. 12, 2020, 9 p.m. 10.4 ppb (10) 1.0 ppb (1) N/A 9.0 ppb (8) N/A N/A N/A 1.23 ppb (14) N/A 109.0 μg/m3 (178) 178.0
 
Sept. 12, 2020, 8 p.m. 17.4 ppb (16) 1.8 ppb (2) N/A 16.0 ppb (15) N/A N/A N/A 1.23 ppb (14) N/A 99.0 μg/m3 (173) 173.0
 
Sept. 12, 2020, 7 p.m. 14.7 ppb (14) 1.4 ppb (1) N/A 13.0 ppb (12) N/A N/A N/A 1.21 ppb (13) N/A 103.0 μg/m3 (175) 175.0
 
Sept. 12, 2020, 6 p.m. 19.8 ppb (18) 2.4 ppb (2) N/A 17.0 ppb (16) N/A N/A N/A 1.24 ppb (14) N/A 110.0 μg/m3 (179) 179.0
 
Sept. 12, 2020, 5 p.m. 39.0 ppb (36) 12.5 ppb (12) N/A 26.0 ppb (24) N/A N/A N/A 1.44 ppb (16) N/A 114.0 μg/m3 (181) 181.0
 
Sept. 12, 2020, 4 p.m. 62.6 ppb (59) 31.1 ppb (29) N/A 32.0 ppb (30) N/A N/A N/A 1.81 ppb (20) N/A N/A 59.0
 
Sept. 12, 2020, 3 p.m. 46.3 ppb (43) 22.0 ppb (20) N/A 24.0 ppb (22) N/A N/A N/A 1.59 ppb (18) N/A 122.0 μg/m3 (185) 185.0
 
Sept. 12, 2020, 2 p.m. 42.0 ppb (39) 20.4 ppb (19) N/A 22.0 ppb (20) N/A N/A N/A 1.52 ppb (17) N/A 117.0 μg/m3 (182) 182.0