AQSQID: 060010015

Site Name: Pleasanton - Owens Ct.

Location: Pleasanton (Dougherty), CA

Reporting: True, Located: True

Current AQI: 69.0

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
Jan. 20, 2020, 6 p.m. 70.2 ppb (67) 49.9 ppb (46) N/A 20.0 ppb (19) N/A N/A N/A 0.74 ppb (8) N/A 21.0 μg/m3 (69) 69.0
 
Jan. 20, 2020, 5 p.m. 62.8 ppb (59) 43.1 ppb (40) N/A 20.0 ppb (19) N/A N/A N/A 0.74 ppb (8) N/A 17.0 μg/m3 (61) 61.0
 
Jan. 20, 2020, 4 p.m. 46.8 ppb (43) 30.1 ppb (28) N/A 17.0 ppb (16) N/A N/A N/A 0.67 ppb (7) N/A 14.0 μg/m3 (54) 54.0
 
Jan. 20, 2020, 3 p.m. 56.6 ppb (53) 38.5 ppb (36) N/A 18.0 ppb (17) N/A N/A N/A 0.73 ppb (8) N/A 13.0 μg/m3 (52) 53.0
 
Jan. 20, 2020, 2 p.m. 43.2 ppb (40) 26.8 ppb (25) N/A 17.0 ppb (16) N/A N/A N/A 0.61 ppb (7) N/A 21.0 μg/m3 (69) 69.0
 
Jan. 20, 2020, 1 p.m. 42.3 ppb (39) 25.5 ppb (24) N/A 17.0 ppb (16) N/A N/A N/A 0.63 ppb (7) N/A 19.0 μg/m3 (65) 65.0
 
Jan. 20, 2020, noon 33.1 ppb (31) 17.4 ppb (16) N/A 16.0 ppb (15) N/A N/A N/A 0.52 ppb (6) N/A 15.0 μg/m3 (56) 56.0
 
Jan. 20, 2020, 11 a.m. 25.6 ppb (24) 12.1 ppb (11) N/A 14.0 ppb (13) N/A N/A N/A 0.46 ppb (5) N/A 20.0 μg/m3 (67) 67.0
 
Jan. 20, 2020, 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 (69) 69.0
 
Jan. 20, 2020, 9 a.m. 7.9 ppb (7) 0.5 ppb (0) N/A 7.0 ppb (6) N/A N/A N/A 0.38 ppb (4) N/A 13.0 μg/m3 (52) 52.0
 
Jan. 20, 2020, 8 a.m. 8.9 ppb (8) 1.7 ppb (2) N/A 7.0 ppb (6) N/A N/A N/A 0.4 ppb (4) N/A 16.0 μg/m3 (59) 59.0
 
Jan. 20, 2020, 7 a.m. 9.0 ppb (8) 0.6 ppb (1) N/A 8.0 ppb (7) N/A N/A N/A 0.4 ppb (4) N/A 14.0 μg/m3 (54) 54.0
 
Jan. 20, 2020, 6 a.m. 12.9 ppb (12) 1.4 ppb (1) N/A 12.0 ppb (11) N/A N/A N/A 0.46 ppb (5) N/A 18.0 μg/m3 (63) 63.0
 
Jan. 20, 2020, 5 a.m. 9.3 ppb (9) 1.3 ppb (1) N/A 8.0 ppb (7) N/A N/A N/A 0.4 ppb (4) N/A 17.0 μg/m3 (61) 61.0
 
Jan. 20, 2020, 4 a.m. 11.7 ppb (11) 0.9 ppb (1) N/A 11.0 ppb (10) N/A N/A N/A 0.43 ppb (5) N/A 11.0 μg/m3 (46) 46.0
 
Jan. 20, 2020, 3 a.m. 8.6 ppb (8) 0.7 ppb (1) N/A 8.0 ppb (7) N/A N/A N/A 0.41 ppb (5) N/A 15.0 μg/m3 (56) 56.0
 
Jan. 20, 2020, 2 a.m. 6.4 ppb (6) 0.6 ppb (1) N/A 6.0 ppb (6) N/A N/A N/A 0.39 ppb (4) N/A 13.0 μg/m3 (52) 52.0
 
Jan. 20, 2020, 1 a.m. 6.5 ppb (6) 0.7 ppb (1) N/A 6.0 ppb (6) N/A N/A N/A 0.39 ppb (4) N/A 15.0 μg/m3 (56) 56.0
 
Jan. 20, 2020, midnight 5.6 ppb (5) 0.8 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
 
Jan. 19, 2020, 11 p.m. 5.5 ppb (5) 1.0 ppb (1) N/A 5.0 ppb (5) N/A N/A N/A 0.38 ppb (4) N/A 11.0 μg/m3 (46) 46.0
 
Jan. 19, 2020, 10 p.m. 5.1 ppb (5) 1.1 ppb (1) N/A 4.0 ppb (4) N/A N/A N/A 0.37 ppb (4) N/A 6.0 μg/m3 (25) 25.0
 
Jan. 19, 2020, 9 p.m. 5.0 ppb (5) 1.3 ppb (1) N/A 4.0 ppb (4) N/A N/A N/A 0.36 ppb (4) N/A 9.0 μg/m3 (38) 38.0
 
Jan. 19, 2020, 8 p.m. 4.9 ppb (5) 1.5 ppb (1) N/A 3.0 ppb (3) N/A N/A N/A 0.36 ppb (4) N/A 9.0 μg/m3 (38) 38.0
 
Jan. 19, 2020, 7 p.m. 6.5 ppb (6) 2.0 ppb (2) N/A 4.0 ppb (4) N/A N/A N/A 0.38 ppb (4) N/A 16.0 μg/m3 (59) 59.0
 
Jan. 19, 2020, 6 p.m. 6.8 ppb (6) 1.9 ppb (2) N/A 5.0 ppb (5) N/A N/A N/A 0.38 ppb (4) N/A 13.0 μg/m3 (52) 52.0
 
Jan. 19, 2020, 5 p.m. 7.7 ppb (7) 1.7 ppb (2) N/A 6.0 ppb (6) N/A N/A N/A 0.36 ppb (4) N/A 4.0 μg/m3 (17) 17.0
 
Jan. 19, 2020, 4 p.m. 8.8 ppb (8) 1.3 ppb (1) N/A 7.0 ppb (6) N/A N/A N/A 0.35 ppb (4) N/A 5.0 μg/m3 (21) 21.0
 
Jan. 19, 2020, 3 p.m. 9.3 ppb (9) 1.3 ppb (1) 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
 
Jan. 19, 2020, 2 p.m. 25.8 ppb (24) 9.9 ppb (9) N/A 16.0 ppb (15) N/A N/A N/A 0.52 ppb (6) N/A 6.0 μg/m3 (25) 25.0
 
Jan. 19, 2020, 1 p.m. 21.3 ppb (20) 6.8 ppb (6) N/A 15.0 ppb (14) N/A N/A N/A 0.42 ppb (5) N/A 3.0 μg/m3 (12) 20.0
 
Jan. 19, 2020, noon 16.9 ppb (16) 3.4 ppb (3) N/A 14.0 ppb (13) N/A N/A N/A 0.37 ppb (4) N/A 4.0 μg/m3 (17) 17.0
 
Jan. 19, 2020, 11 a.m. 5.7 ppb (5) 0.5 ppb (0) N/A 5.0 ppb (5) N/A N/A N/A 0.32 ppb (4) N/A 2.0 μg/m3 (8) 8.0
 
Jan. 19, 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
 
Jan. 19, 2020, 9 a.m. 9.5 ppb (9) 1.0 ppb (1) N/A 9.0 ppb (8) N/A N/A N/A 0.37 ppb (4) N/A 7.0 μg/m3 (29) 29.0
 
Jan. 19, 2020, 8 a.m. 7.9 ppb (7) 0.4 ppb (0) 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
 
Jan. 19, 2020, 7 a.m. 5.1 ppb (5) 0.4 ppb (0) N/A 5.0 ppb (5) N/A N/A N/A 0.33 ppb (4) N/A 3.0 μg/m3 (12) 12.0
 
Jan. 19, 2020, 6 a.m. 6.8 ppb (6) 0.3 ppb (0) N/A 7.0 ppb (6) N/A N/A N/A 0.35 ppb (4) N/A 6.0 μg/m3 (25) 25.0
 
Jan. 19, 2020, 5 a.m. 6.0 ppb (6) 0.5 ppb (0) N/A 6.0 ppb (6) N/A N/A N/A 0.38 ppb (4) N/A 9.0 μg/m3 (38) 38.0
 
Jan. 19, 2020, 4 a.m. 6.5 ppb (6) 0.4 ppb (0) N/A 6.0 ppb (6) N/A N/A N/A 0.37 ppb (4) N/A 9.0 μg/m3 (38) 38.0
 
Jan. 19, 2020, 3 a.m. 6.9 ppb (6) 0.5 ppb (0) N/A 7.0 ppb (6) N/A N/A N/A 0.36 ppb (4) N/A 6.0 μg/m3 (25) 25.0
 
Jan. 19, 2020, 2 a.m. 7.1 ppb (7) 0.6 ppb (1) N/A 7.0 ppb (6) N/A N/A N/A 0.37 ppb (4) N/A 9.0 μg/m3 (38) 38.0
 
Jan. 19, 2020, 1 a.m. 8.6 ppb (8) 1.2 ppb (1) N/A 7.0 ppb (6) N/A N/A N/A 0.44 ppb (5) N/A 13.0 μg/m3 (52) 52.0
 
Jan. 19, 2020, midnight 20.7 ppb (19) 7.3 ppb (7) N/A 14.0 ppb (13) N/A N/A N/A 0.69 ppb (8) N/A 7.0 μg/m3 (29) 29.0
 
Jan. 18, 2020, 11 p.m. 15.9 ppb (15) 6.1 ppb (6) N/A 10.0 ppb (9) N/A N/A N/A 0.58 ppb (6) N/A 7.0 μg/m3 (29) 29.0
 
Jan. 18, 2020, 10 p.m. 5.4 ppb (5) 1.4 ppb (1) N/A 4.0 ppb (4) N/A N/A N/A 0.34 ppb (4) N/A 5.0 μg/m3 (21) 21.0
 
Jan. 18, 2020, 9 p.m. 12.6 ppb (12) 5.4 ppb (5) N/A 7.0 ppb (6) N/A N/A N/A 0.49 ppb (5) N/A 8.0 μg/m3 (33) 33.0
 
Jan. 18, 2020, 8 p.m. 7.7 ppb (7) 2.0 ppb (2) N/A 6.0 ppb (6) N/A N/A N/A 0.4 ppb (4) N/A 6.0 μg/m3 (25) 25.0
 
Jan. 18, 2020, 7 p.m. 9.4 ppb (9) 2.7 ppb (3) N/A 7.0 ppb (6) N/A N/A N/A 0.41 ppb (5) N/A 8.0 μg/m3 (33) 33.0
 
Jan. 18, 2020, 6 p.m. 20.2 ppb (19) 7.0 ppb (6) N/A 13.0 ppb (12) N/A N/A N/A 0.51 ppb (6) N/A 8.0 μg/m3 (33) 33.0
 
Jan. 18, 2020, 5 p.m. 33.9 ppb (31) 20.3 ppb (19) N/A 14.0 ppb (13) N/A N/A N/A 0.6 ppb (7) N/A 10.0 μg/m3 (42) 42.0
 
Jan. 18, 2020, 4 p.m. 59.0 ppb (55) 44.7 ppb (41) N/A 14.0 ppb (13) N/A N/A N/A 0.89 ppb (10) N/A 10.0 μg/m3 (42) 55.0
 
Jan. 18, 2020, 3 p.m. 46.1 ppb (43) 30.9 ppb (29) N/A 15.0 ppb (14) N/A N/A N/A 0.67 ppb (7) N/A 9.0 μg/m3 (38) 43.0
 
Jan. 18, 2020, 2 p.m. 37.2 ppb (34) 20.9 ppb (19) N/A 16.0 ppb (15) N/A N/A N/A 0.65 ppb (7) N/A 8.0 μg/m3 (33) 34.0
 
Jan. 18, 2020, 1 p.m. 29.8 ppb (28) 14.4 ppb (13) N/A 15.0 ppb (14) N/A N/A N/A 0.53 ppb (6) N/A 12.0 μg/m3 (50) 50.0
 
Jan. 18, 2020, noon 26.9 ppb (25) 11.9 ppb (11) N/A 15.0 ppb (14) N/A N/A N/A 0.49 ppb (5) N/A 20.0 μg/m3 (67) 67.0
 
Jan. 18, 2020, 11 a.m. 25.2 ppb (23) 10.3 ppb (10) N/A 15.0 ppb (14) N/A N/A N/A 0.51 ppb (6) N/A 9.0 μg/m3 (38) 38.0
 
Jan. 18, 2020, 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
 
Jan. 18, 2020, 9 a.m. 20.9 ppb (19) 6.3 ppb (6) N/A 15.0 ppb (14) N/A N/A N/A 0.61 ppb (7) N/A 20.0 μg/m3 (67) 67.0
 
Jan. 18, 2020, 8 a.m. 25.1 ppb (23) 8.4 ppb (8) N/A 17.0 ppb (16) N/A N/A N/A 0.65 ppb (7) N/A 29.0 μg/m3 (86) 86.0
 
Jan. 18, 2020, 7 a.m. 31.9 ppb (30) 13.6 ppb (13) N/A 18.0 ppb (17) N/A N/A N/A 0.71 ppb (8) N/A 18.0 μg/m3 (63) 63.0
 
Jan. 18, 2020, 6 a.m. 32.9 ppb (30) 13.3 ppb (12) N/A 20.0 ppb (19) N/A N/A N/A 0.79 ppb (9) N/A 27.0 μg/m3 (82) 82.0
 
Jan. 18, 2020, 5 a.m. 35.4 ppb (33) 16.3 ppb (15) N/A 19.0 ppb (18) N/A N/A N/A 0.77 ppb (9) N/A 13.0 μg/m3 (52) 52.0
 
Jan. 18, 2020, 4 a.m. 24.5 ppb (23) 9.3 ppb (9) N/A 15.0 ppb (14) N/A N/A N/A 0.62 ppb (7) N/A 7.0 μg/m3 (29) 29.0
 
Jan. 18, 2020, 3 a.m. 10.3 ppb (10) 0.6 ppb (1) N/A 10.0 ppb (9) N/A N/A N/A 0.37 ppb (4) N/A 10.0 μg/m3 (42) 42.0
 
Jan. 18, 2020, 2 a.m. 10.7 ppb (10) 0.7 ppb (1) N/A 10.0 ppb (9) N/A N/A N/A 0.38 ppb (4) N/A 10.0 μg/m3 (42) 42.0
 
Jan. 18, 2020, 1 a.m. 11.5 ppb (11) 2.1 ppb (2) N/A 9.0 ppb (8) N/A N/A N/A 0.38 ppb (4) N/A 6.0 μg/m3 (25) 25.0
 
Jan. 18, 2020, midnight 17.2 ppb (16) 5.2 ppb (5) N/A 12.0 ppb (11) N/A N/A N/A 0.39 ppb (4) N/A 6.0 μg/m3 (25) 25.0
 
Jan. 17, 2020, 11 p.m. 50.3 ppb (47) 27.0 ppb (25) N/A 23.0 ppb (21) N/A N/A N/A 0.52 ppb (6) N/A 5.0 μg/m3 (21) 47.0
 
Jan. 17, 2020, 10 p.m. 26.3 ppb (24) 12.0 ppb (11) N/A 14.0 ppb (13) N/A N/A N/A 0.36 ppb (4) N/A 3.0 μg/m3 (12) 24.0
 
Jan. 17, 2020, 9 p.m. 39.0 ppb (36) 19.4 ppb (18) N/A 20.0 ppb (19) N/A N/A N/A 0.47 ppb (5) N/A 2.0 μg/m3 (8) 36.0
 
Jan. 17, 2020, 8 p.m. 50.6 ppb (47) 23.8 ppb (22) N/A 27.0 ppb (25) N/A N/A N/A 0.64 ppb (7) N/A 3.0 μg/m3 (12) 47.0
 
Jan. 17, 2020, 7 p.m. 52.6 ppb (49) 26.6 ppb (25) N/A 26.0 ppb (24) N/A N/A N/A 0.66 ppb (7) N/A 5.0 μg/m3 (21) 49.0
 
Jan. 17, 2020, 6 p.m. 113.6 ppb (102) 78.1 ppb (76) N/A 36.0 ppb (33) N/A N/A N/A 0.92 ppb (10) N/A 20.0 μg/m3 (67) 102.0
 
Jan. 17, 2020, 5 p.m. 102.5 ppb (100) 71.8 ppb (69) N/A 31.0 ppb (29) N/A N/A N/A 0.94 ppb (10) N/A 12.0 μg/m3 (50) 100.0
 
Jan. 17, 2020, 4 p.m. 128.2 ppb (105) 96.0 ppb (95) N/A 32.0 ppb (30) N/A N/A N/A 1.05 ppb (12) N/A 8.0 μg/m3 (33) 105.0
 
Jan. 17, 2020, 3 p.m. 88.1 ppb (86) 62.9 ppb (59) N/A 25.0 ppb (23) N/A N/A N/A 0.92 ppb (10) N/A 5.0 μg/m3 (21) 86.0
 
Jan. 17, 2020, 2 p.m. 73.2 ppb (70) 46.8 ppb (43) N/A 26.0 ppb (24) N/A N/A N/A 0.79 ppb (9) N/A 7.0 μg/m3 (29) 70.0
 
Jan. 17, 2020, 1 p.m. 69.9 ppb (67) 43.4 ppb (40) N/A 27.0 ppb (25) N/A N/A N/A 0.71 ppb (8) N/A 6.0 μg/m3 (25) 67.0
 
Jan. 17, 2020, noon 56.4 ppb (53) 30.9 ppb (29) N/A 26.0 ppb (24) N/A N/A N/A 0.59 ppb (7) N/A 4.0 μg/m3 (17) 53.0
 
Jan. 17, 2020, 11 a.m. 34.5 ppb (32) 11.0 ppb (10) N/A 24.0 ppb (22) N/A N/A N/A 0.46 ppb (5) N/A 5.0 μg/m3 (21) 32.0
 
Jan. 17, 2020, 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
 
Jan. 17, 2020, 9 a.m. 25.6 ppb (24) 7.7 ppb (7) N/A 18.0 ppb (17) N/A N/A N/A 0.43 ppb (5) N/A 6.0 μg/m3 (25) 25.0
 
Jan. 17, 2020, 8 a.m. 33.2 ppb (31) 9.2 ppb (9) N/A 24.0 ppb (22) N/A N/A N/A 0.56 ppb (6) N/A 3.0 μg/m3 (12) 31.0
 
Jan. 17, 2020, 7 a.m. 16.3 ppb (15) 2.0 ppb (2) N/A 14.0 ppb (13) N/A N/A N/A 0.43 ppb (5) N/A 3.0 μg/m3 (12) 15.0
 
Jan. 17, 2020, 6 a.m. 4.8 ppb (4) 0.3 ppb (0) N/A 5.0 ppb (5) N/A N/A N/A 0.33 ppb (4) N/A 6.0 μg/m3 (25) 25.0
 
Jan. 17, 2020, 5 a.m. 8.8 ppb (8) 0.6 ppb (1) N/A 8.0 ppb (7) N/A N/A N/A 0.38 ppb (4) N/A 7.0 μg/m3 (29) 29.0
 
Jan. 17, 2020, 4 a.m. 15.4 ppb (14) 2.4 ppb (2) N/A 13.0 ppb (12) N/A N/A N/A 0.46 ppb (5) N/A 6.0 μg/m3 (25) 25.0
 
Jan. 17, 2020, 3 a.m. 33.8 ppb (31) 9.9 ppb (9) N/A 24.0 ppb (22) N/A N/A N/A 0.58 ppb (6) N/A 8.0 μg/m3 (33) 33.0
 
Jan. 17, 2020, 2 a.m. 14.8 ppb (14) 2.0 ppb (2) N/A 13.0 ppb (12) N/A N/A N/A 0.47 ppb (5) N/A 7.0 μg/m3 (29) 29.0
 
Jan. 17, 2020, 1 a.m. 19.5 ppb (18) 4.3 ppb (4) N/A 15.0 ppb (14) N/A N/A N/A 0.52 ppb (6) N/A 6.0 μg/m3 (25) 25.0
 
Jan. 17, 2020, midnight 13.8 ppb (13) 3.0 ppb (3) N/A 11.0 ppb (10) N/A N/A N/A 0.41 ppb (5) N/A 6.0 μg/m3 (25) 25.0
 
Jan. 16, 2020, 11 p.m. 6.2 ppb (6) 1.1 ppb (1) N/A 5.0 ppb (5) N/A N/A N/A 0.32 ppb (4) N/A 7.0 μg/m3 (29) 29.0
 
Jan. 16, 2020, 10 p.m. 7.5 ppb (7) 2.1 ppb (2) N/A 5.0 ppb (5) N/A N/A N/A 0.32 ppb (4) N/A 8.0 μg/m3 (33) 33.0
 
Jan. 16, 2020, 9 p.m. 16.5 ppb (15) 6.2 ppb (6) N/A 10.0 ppb (9) N/A N/A N/A 0.41 ppb (5) N/A 1.0 μg/m3 (4) 15.0
 
Jan. 16, 2020, 8 p.m. 6.6 ppb (6) 0.7 ppb (1) N/A 6.0 ppb (6) N/A N/A N/A 0.32 ppb (4) N/A 3.0 μg/m3 (12) 12.0
 
Jan. 16, 2020, 7 p.m. 15.2 ppb (14) 4.0 ppb (4) N/A 11.0 ppb (10) N/A N/A N/A 0.36 ppb (4) N/A 5.0 μg/m3 (21) 21.0
 
Jan. 16, 2020, 6 p.m. 54.1 ppb (50) 23.0 ppb (21) N/A 31.0 ppb (29) N/A N/A N/A 0.46 ppb (5) N/A 3.0 μg/m3 (12) 50.0
 
Jan. 16, 2020, 5 p.m. 4.1 ppb (4) 1.3 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
 
Jan. 16, 2020, 4 p.m. 2.2 ppb (2) 0.4 ppb (0) N/A 2.0 ppb (2) N/A N/A N/A 0.28 ppb (3) N/A 2.0 μg/m3 (8) 8.0
 
Jan. 16, 2020, 3 p.m. 2.2 ppb (2) 0.3 ppb (0) N/A 2.0 ppb (2) N/A N/A N/A 0.27 ppb (3) N/A 4.0 μg/m3 (17) 17.0
 
Jan. 16, 2020, 2 p.m. 2.1 ppb (2) 0.3 ppb (0) N/A 2.0 ppb (2) N/A N/A N/A 0.26 ppb (3) N/A 8.0 μg/m3 (33) 33.0
 
Jan. 16, 2020, 1 p.m. 2.9 ppb (3) 0.5 ppb (0) N/A 2.0 ppb (2) N/A N/A N/A 0.27 ppb (3) N/A 7.0 μg/m3 (29) 29.0
 
Jan. 16, 2020, noon 4.1 ppb (4) 0.8 ppb (1) N/A 3.0 ppb (3) N/A N/A N/A 0.27 ppb (3) N/A 4.0 μg/m3 (17) 17.0
 
Jan. 16, 2020, 11 a.m. 8.5 ppb (8) 1.2 ppb (1) N/A 7.0 ppb (6) N/A N/A N/A 0.28 ppb (3) N/A 4.0 μg/m3 (17) 17.0
 
Jan. 16, 2020, 10 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
 
Jan. 16, 2020, 9 a.m. 7.4 ppb (7) 1.2 ppb (1) N/A 6.0 ppb (6) N/A N/A N/A 0.29 ppb (3) N/A 5.0 μg/m3 (21) 21.0
 
Jan. 16, 2020, 8 a.m. 2.6 ppb (2) 0.2 ppb (0) N/A 2.0 ppb (2) N/A N/A N/A 0.28 ppb (3) N/A 6.0 μg/m3 (25) 25.0
 
Jan. 16, 2020, 7 a.m. 12.4 ppb (11) 0.7 ppb (1) N/A 12.0 ppb (11) N/A N/A N/A 0.41 ppb (5) N/A 9.0 μg/m3 (38) 38.0
 
Jan. 16, 2020, 6 a.m. 18.1 ppb (17) 1.7 ppb (2) N/A 16.0 ppb (15) N/A N/A N/A 0.47 ppb (5) N/A 6.0 μg/m3 (25) 25.0
 
Jan. 16, 2020, 5 a.m. 27.7 ppb (26) 7.6 ppb (7) N/A 20.0 ppb (19) N/A N/A N/A 0.57 ppb (6) N/A 6.0 μg/m3 (25) 26.0
 
Jan. 16, 2020, 4 a.m. 16.4 ppb (15) 0.8 ppb (1) N/A 16.0 ppb (15) N/A N/A N/A 0.45 ppb (5) N/A 5.0 μg/m3 (21) 21.0
 
Jan. 16, 2020, 3 a.m. 28.9 ppb (27) 5.1 ppb (5) N/A 24.0 ppb (22) N/A N/A N/A 0.65 ppb (7) N/A 9.0 μg/m3 (38) 38.0
 
Jan. 16, 2020, 2 a.m. 18.7 ppb (17) 2.3 ppb (2) N/A 16.0 ppb (15) N/A N/A N/A 0.52 ppb (6) N/A 8.0 μg/m3 (33) 33.0
 
Jan. 16, 2020, 1 a.m. 11.6 ppb (11) 0.5 ppb (0) N/A 11.0 ppb (10) N/A N/A N/A 0.39 ppb (4) N/A 9.0 μg/m3 (38) 38.0
 
Jan. 16, 2020, midnight 13.5 ppb (12) 1.8 ppb (2) N/A 12.0 ppb (11) N/A N/A N/A 0.41 ppb (5) N/A 5.0 μg/m3 (21) 21.0
 
Jan. 15, 2020, 11 p.m. 44.3 ppb (41) 21.3 ppb (20) N/A 23.0 ppb (21) N/A N/A N/A 0.55 ppb (6) N/A 7.0 μg/m3 (29) 41.0
 
Jan. 15, 2020, 10 p.m. 49.1 ppb (45) 24.6 ppb (23) N/A 25.0 ppb (23) N/A N/A N/A 0.57 ppb (6) N/A 8.0 μg/m3 (33) 45.0
 
Jan. 15, 2020, 9 p.m. 19.2 ppb (18) 6.5 ppb (6) N/A 13.0 ppb (12) N/A N/A N/A 0.4 ppb (4) N/A 8.0 μg/m3 (33) 33.0
 
Jan. 15, 2020, 8 p.m. 34.7 ppb (32) 15.5 ppb (14) N/A 19.0 ppb (18) N/A N/A N/A 0.47 ppb (5) N/A 13.0 μg/m3 (52) 52.0
 
Jan. 15, 2020, 7 p.m. 53.6 ppb (50) 30.7 ppb (28) N/A 23.0 ppb (21) N/A N/A N/A 0.63 ppb (7) N/A 7.0 μg/m3 (29) 50.0
 
Jan. 15, 2020, 6 p.m. 92.6 ppb (91) 65.1 ppb (62) N/A 28.0 ppb (26) N/A N/A N/A 0.84 ppb (9) N/A 11.0 μg/m3 (46) 91.0
 
Jan. 15, 2020, 5 p.m. 83.4 ppb (81) 60.7 ppb (57) N/A 23.0 ppb (21) N/A N/A N/A 0.77 ppb (9) N/A 6.0 μg/m3 (25) 81.0
 
Jan. 15, 2020, 4 p.m. 112.7 ppb (102) 86.5 ppb (85) N/A 26.0 ppb (24) N/A N/A N/A 0.95 ppb (11) N/A 2.0 μg/m3 (8) 102.0
 
Jan. 15, 2020, 3 p.m. 79.0 ppb (77) 57.3 ppb (54) N/A 22.0 ppb (20) N/A N/A N/A 0.83 ppb (9) N/A 6.0 μg/m3 (25) 77.0
 
Jan. 15, 2020, 2 p.m. 61.5 ppb (58) 40.6 ppb (38) N/A 21.0 ppb (19) N/A N/A N/A 0.68 ppb (8) N/A 8.0 μg/m3 (33) 58.0
 
Jan. 15, 2020, 1 p.m. 60.9 ppb (57) 39.7 ppb (37) N/A 21.0 ppb (19) N/A N/A N/A 0.7 ppb (8) N/A 10.0 μg/m3 (42) 57.0
 
Jan. 15, 2020, noon 52.7 ppb (49) 33.5 ppb (31) N/A 19.0 ppb (18) N/A N/A N/A 0.58 ppb (6) N/A 5.0 μg/m3 (21) 49.0
 
Jan. 15, 2020, 11 a.m. 35.3 ppb (33) 18.8 ppb (17) N/A 17.0 ppb (16) N/A N/A N/A 0.36 ppb (4) N/A 7.0 μg/m3 (29) 33.0
 
Jan. 15, 2020, 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 (33) 33.0
 
Jan. 15, 2020, 9 a.m. 25.4 ppb (24) 8.8 ppb (8) N/A 17.0 ppb (16) N/A N/A N/A 0.4 ppb (4) N/A 5.0 μg/m3 (21) 24.0
 
Jan. 15, 2020, 8 a.m. 23.5 ppb (22) 7.5 ppb (7) N/A 16.0 ppb (15) N/A N/A N/A 0.43 ppb (5) N/A 5.0 μg/m3 (21) 22.0
 
Jan. 15, 2020, 7 a.m. 29.1 ppb (27) 10.1 ppb (9) N/A 19.0 ppb (18) N/A N/A N/A 0.52 ppb (6) N/A 6.0 μg/m3 (25) 27.0
 
Jan. 15, 2020, 6 a.m. 28.0 ppb (26) 6.8 ppb (6) N/A 21.0 ppb (19) N/A N/A N/A 0.52 ppb (6) N/A 10.0 μg/m3 (42) 42.0
 
Jan. 15, 2020, 5 a.m. 31.1 ppb (29) 9.5 ppb (9) N/A 22.0 ppb (20) N/A N/A N/A 0.61 ppb (7) N/A 4.0 μg/m3 (17) 29.0
 
Jan. 15, 2020, 4 a.m. 29.2 ppb (27) 9.9 ppb (9) N/A 19.0 ppb (18) N/A N/A N/A 0.6 ppb (7) N/A 4.0 μg/m3 (17) 27.0
 
Jan. 15, 2020, 3 a.m. 34.6 ppb (32) 13.3 ppb (12) N/A 21.0 ppb (19) N/A N/A N/A 0.72 ppb (8) N/A 7.0 μg/m3 (29) 32.0
 
Jan. 15, 2020, 2 a.m. 18.1 ppb (17) 5.1 ppb (5) N/A 13.0 ppb (12) N/A N/A N/A 0.48 ppb (5) N/A 11.0 μg/m3 (46) 46.0
 
Jan. 15, 2020, 1 a.m. 7.7 ppb (7) 0.7 ppb (1) N/A 7.0 ppb (6) N/A N/A N/A 0.35 ppb (4) N/A 6.0 μg/m3 (25) 25.0
 
Jan. 15, 2020, midnight 14.9 ppb (14) 4.8 ppb (4) N/A 10.0 ppb (9) N/A N/A N/A 0.34 ppb (4) N/A 5.0 μg/m3 (21) 21.0
 
Jan. 14, 2020, 11 p.m. 16.7 ppb (15) 6.4 ppb (6) N/A 10.0 ppb (9) N/A N/A N/A 0.33 ppb (4) N/A 7.0 μg/m3 (29) 29.0
 
Jan. 14, 2020, 10 p.m. 13.6 ppb (13) 5.0 ppb (5) N/A 9.0 ppb (8) N/A N/A N/A 0.32 ppb (4) N/A 8.0 μg/m3 (33) 33.0
 
Jan. 14, 2020, 9 p.m. 17.2 ppb (16) 6.9 ppb (6) N/A 10.0 ppb (9) N/A N/A N/A 0.36 ppb (4) N/A 7.0 μg/m3 (29) 29.0
 
Jan. 14, 2020, 8 p.m. 38.6 ppb (36) 18.5 ppb (17) N/A 20.0 ppb (19) N/A N/A N/A 0.46 ppb (5) N/A 9.0 μg/m3 (38) 38.0
 
Jan. 14, 2020, 7 p.m. 27.5 ppb (25) 11.9 ppb (11) N/A 16.0 ppb (15) N/A N/A N/A 0.41 ppb (5) N/A 10.0 μg/m3 (42) 42.0
 
Jan. 14, 2020, 6 p.m. 32.8 ppb (30) 14.2 ppb (13) N/A 19.0 ppb (18) N/A N/A N/A 0.44 ppb (5) N/A 7.0 μg/m3 (29) 30.0
 
Jan. 14, 2020, 5 p.m. 25.3 ppb (23) 9.4 ppb (9) N/A 16.0 ppb (15) N/A N/A N/A 0.4 ppb (4) N/A 5.0 μg/m3 (21) 23.0
 
Jan. 14, 2020, 4 p.m. 15.7 ppb (15) 2.7 ppb (3) N/A 13.0 ppb (12) N/A N/A N/A 0.42 ppb (5) N/A 6.0 μg/m3 (25) 25.0
 
Jan. 14, 2020, 3 p.m. 23.8 ppb (22) 3.6 ppb (3) N/A 20.0 ppb (19) N/A N/A N/A 0.49 ppb (5) N/A 4.0 μg/m3 (17) 22.0
 
Jan. 14, 2020, 2 p.m. 13.5 ppb (12) 1.6 ppb (1) N/A 12.0 ppb (11) N/A N/A N/A 0.37 ppb (4) N/A 8.0 μg/m3 (33) 33.0
 
Jan. 14, 2020, 1 p.m. 8.4 ppb (8) 0.3 ppb (0) N/A 8.0 ppb (7) N/A N/A N/A 0.34 ppb (4) N/A 7.0 μg/m3 (29) 29.0
 
Jan. 14, 2020, noon 7.9 ppb (7) 0.4 ppb (0) N/A 8.0 ppb (7) N/A N/A N/A 0.32 ppb (4) N/A 5.0 μg/m3 (21) 21.0
 
Jan. 14, 2020, 11 a.m. 15.8 ppb (15) 2.4 ppb (2) N/A 13.0 ppb (12) N/A N/A N/A 0.32 ppb (4) N/A 4.0 μg/m3 (17) 17.0
 
Jan. 14, 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
 
Jan. 14, 2020, 9 a.m. 3.0 ppb (3) 0.3 ppb (0) N/A 3.0 ppb (3) N/A N/A N/A 0.32 ppb (4) N/A 3.0 μg/m3 (12) 12.0
 
Jan. 14, 2020, 8 a.m. 4.3 ppb (4) 0.4 ppb (0) N/A 4.0 ppb (4) N/A N/A N/A 0.34 ppb (4) N/A 5.0 μg/m3 (21) 21.0
 
Jan. 14, 2020, 7 a.m. 12.3 ppb (11) 1.9 ppb (2) N/A 10.0 ppb (9) N/A N/A N/A 0.38 ppb (4) N/A 5.0 μg/m3 (21) 21.0
 
Jan. 14, 2020, 6 a.m. 10.6 ppb (10) 1.4 ppb (1) N/A 9.0 ppb (8) N/A N/A N/A 0.41 ppb (5) N/A 4.0 μg/m3 (17) 17.0
 
Jan. 14, 2020, 5 a.m. 28.1 ppb (26) 8.9 ppb (8) N/A 19.0 ppb (18) N/A N/A N/A 0.58 ppb (6) N/A 4.0 μg/m3 (17) 26.0
 
Jan. 14, 2020, 4 a.m. 12.8 ppb (12) 2.2 ppb (2) N/A 11.0 ppb (10) N/A N/A N/A 0.4 ppb (4) N/A 3.0 μg/m3 (12) 12.0
 
Jan. 14, 2020, 3 a.m. 5.6 ppb (5) 0.5 ppb (0) N/A 5.0 ppb (5) N/A N/A N/A 0.33 ppb (4) N/A 3.0 μg/m3 (12) 12.0
 
Jan. 14, 2020, 2 a.m. 4.9 ppb (5) 0.4 ppb (0) N/A 5.0 ppb (5) N/A N/A N/A 0.35 ppb (4) N/A 4.0 μg/m3 (17) 17.0
 
Jan. 14, 2020, 1 a.m. 5.8 ppb (5) 0.4 ppb (0) N/A 5.0 ppb (5) N/A N/A N/A 0.32 ppb (4) N/A 4.0 μg/m3 (17) 17.0
 
Jan. 14, 2020, midnight 6.9 ppb (6) 1.1 ppb (1) N/A 6.0 ppb (6) N/A N/A N/A 0.33 ppb (4) N/A 3.0 μg/m3 (12) 12.0
 
Jan. 13, 2020, 11 p.m. 5.4 ppb (5) 1.0 ppb (1) N/A 4.0 ppb (4) N/A N/A N/A 0.28 ppb (3) N/A 3.0 μg/m3 (12) 12.0
 
Jan. 13, 2020, 10 p.m. 8.9 ppb (8) 3.1 ppb (3) N/A 6.0 ppb (6) N/A N/A N/A 0.29 ppb (3) N/A 1.0 μg/m3 (4) 8.0
 
Jan. 13, 2020, 9 p.m. 10.1 ppb (9) 2.8 ppb (3) N/A 7.0 ppb (6) N/A N/A N/A 0.34 ppb (4) N/A 3.0 μg/m3 (12) 12.0
 
Jan. 13, 2020, 8 p.m. 8.7 ppb (8) 2.2 ppb (2) 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
 
Jan. 13, 2020, 7 p.m. 11.2 ppb (10) 3.8 ppb (4) N/A 7.0 ppb (6) N/A N/A N/A 0.35 ppb (4) N/A N/A 10.0