ID: 2975

AQSQID: 060010015

Site Name: Pleasanton - Owens Ct.

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

Updated: Sept. 22, 2021, 11:02 a.m.

Location: Pleasanton (Dougherty), CA

Reporting: True, Located: True

Current AQI: 25.0

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. 6, 2021, 11 p.m. 8.0 ppb (8) 0.3 ppb (1) N/A 8.0 ppb (8) N/A N/A N/A 0.5 ppb (6) N/A 23.0 μg/m3 (74) 74.0
 
Sept. 6, 2021, 10 p.m. 11.6 ppb (11) 1.1 ppb (2) N/A 11.0 ppb (11) N/A N/A N/A 0.64 ppb (7) N/A 17.0 μg/m3 (62) 62.0
 
Sept. 6, 2021, 9 p.m. 6.6 ppb (7) 0.5 ppb (1) N/A 6.0 ppb (6) N/A N/A N/A 0.43 ppb (5) N/A 8.0 μg/m3 (34) 34.0
 
Sept. 6, 2021, 8 p.m. 6.7 ppb (7) 0.5 ppb (1) N/A 6.0 ppb (6) N/A N/A N/A 0.49 ppb (6) N/A 9.0 μg/m3 (38) 38.0
 
Sept. 6, 2021, 7 p.m. 8.2 ppb (8) 0.6 ppb (1) N/A 8.0 ppb (8) N/A N/A N/A 0.48 ppb (6) N/A 10.0 μg/m3 (42) 42.0
 
Sept. 6, 2021, 6 p.m. 14.3 ppb (14) 1.5 ppb (2) N/A 13.0 ppb (13) N/A N/A N/A 0.63 ppb (7) N/A 32.0 μg/m3 (93) 93.0
 
Sept. 6, 2021, 5 p.m. 10.3 ppb (10) 0.9 ppb (1) N/A 9.0 ppb (9) N/A N/A N/A 0.49 ppb (6) N/A 25.0 μg/m3 (79) 79.0
 
Sept. 6, 2021, 4 p.m. 6.8 ppb (7) 0.6 ppb (1) N/A 6.0 ppb (6) N/A N/A N/A 0.39 ppb (5) N/A 22.0 μg/m3 (72) 72.0
 
Sept. 6, 2021, 3 p.m. 15.5 ppb (15) 3.4 ppb (4) N/A 12.0 ppb (12) N/A N/A N/A 0.48 ppb (6) N/A 22.0 μg/m3 (72) 72.0
 
Sept. 6, 2021, 2 p.m. 32.0 ppb (31) 13.3 ppb (13) N/A 19.0 ppb (18) N/A N/A N/A 0.7 ppb (8) N/A 21.0 μg/m3 (70) 70.0
 
Sept. 6, 2021, 1 p.m. 25.2 ppb (24) 5.7 ppb (6) 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
 
Sept. 6, 2021, noon 20.7 ppb (20) 4.1 ppb (4) N/A 17.0 ppb (17) N/A N/A N/A 0.52 ppb (6) N/A 20.0 μg/m3 (68) 68.0
 
Sept. 6, 2021, 11 a.m. 15.8 ppb (15) 2.0 ppb (2) N/A 14.0 ppb (14) N/A N/A N/A 0.5 ppb (6) N/A 22.0 μg/m3 (72) 72.0
 
Sept. 6, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 23.0 μg/m3 (74) 74.0
 
Sept. 6, 2021, 9 a.m. 15.3 ppb (15) 0.8 ppb (1) N/A 15.0 ppb (15) N/A N/A N/A 0.55 ppb (7) N/A 20.0 μg/m3 (68) 68.0
 
Sept. 6, 2021, 8 a.m. 15.6 ppb (15) 2.0 ppb (2) N/A 14.0 ppb (14) N/A N/A N/A 0.58 ppb (7) N/A 21.0 μg/m3 (70) 70.0
 
Sept. 6, 2021, 7 a.m. 9.0 ppb (9) 0.0 ppb (0) N/A 9.0 ppb (9) N/A N/A N/A 0.47 ppb (6) N/A 29.0 μg/m3 (87) 87.0
 
Sept. 6, 2021, 6 a.m. 9.2 ppb (9) 0.0 ppb (0) N/A 9.0 ppb (9) N/A N/A N/A 0.49 ppb (6) N/A 24.0 μg/m3 (77) 77.0
 
Sept. 6, 2021, 5 a.m. 16.6 ppb (16) 0.3 ppb (1) N/A 16.0 ppb (16) N/A N/A N/A 0.67 ppb (8) N/A 18.0 μg/m3 (64) 64.0
 
Sept. 6, 2021, 4 a.m. 13.7 ppb (13) 0.0 ppb (0) N/A 14.0 ppb (14) N/A N/A N/A 0.53 ppb (6) N/A 17.0 μg/m3 (62) 62.0
 
Sept. 6, 2021, 3 a.m. 9.3 ppb (9) 0.0 ppb (0) N/A 9.0 ppb (9) N/A N/A N/A 0.46 ppb (6) N/A 18.0 μg/m3 (64) 64.0
 
Sept. 6, 2021, 2 a.m. 12.2 ppb (12) 2.2 ppb (3) N/A 10.0 ppb (10) N/A N/A N/A 0.64 ppb (7) N/A 19.0 μg/m3 (66) 66.0
 
Sept. 6, 2021, 1 a.m. 12.3 ppb (12) 1.6 ppb (2) N/A 11.0 ppb (11) N/A N/A N/A 0.55 ppb (7) N/A 9.0 μg/m3 (38) 38.0
 
Sept. 6, 2021, midnight 7.7 ppb (8) 0.5 ppb (1) N/A 7.0 ppb (7) N/A N/A N/A 0.35 ppb (4) N/A 6.0 μg/m3 (25) 25.0
 
Sept. 5, 2021, 11 p.m. 6.7 ppb (7) 0.3 ppb (1) N/A 6.0 ppb (6) N/A N/A N/A 0.39 ppb (5) N/A 10.0 μg/m3 (42) 42.0
 
Sept. 5, 2021, 10 p.m. 7.8 ppb (8) 0.4 ppb (1) N/A 7.0 ppb (7) N/A N/A N/A 0.49 ppb (6) N/A 7.0 μg/m3 (30) 30.0
 
Sept. 5, 2021, 9 p.m. 7.4 ppb (7) 0.4 ppb (1) N/A 7.0 ppb (7) N/A N/A N/A 0.41 ppb (5) N/A 11.0 μg/m3 (46) 46.0
 
Sept. 5, 2021, 8 p.m. 11.2 ppb (11) 1.1 ppb (2) N/A 10.0 ppb (10) N/A N/A N/A 0.62 ppb (7) N/A 11.0 μg/m3 (46) 46.0
 
Sept. 5, 2021, 7 p.m. 6.5 ppb (7) 0.3 ppb (1) N/A 6.0 ppb (6) N/A N/A N/A 0.45 ppb (6) N/A N/A 7.0
 
Sept. 5, 2021, 6 p.m. 10.6 ppb (10) 0.9 ppb (1) N/A 10.0 ppb (10) N/A N/A N/A 0.57 ppb (7) N/A 17.0 μg/m3 (62) 62.0
 
Sept. 5, 2021, 5 p.m. 14.8 ppb (14) 2.2 ppb (3) N/A 13.0 ppb (13) N/A N/A N/A 0.61 ppb (7) N/A 18.0 μg/m3 (64) 64.0
 
Sept. 5, 2021, 4 p.m. 11.8 ppb (12) 1.8 ppb (2) N/A 10.0 ppb (10) N/A N/A N/A 0.55 ppb (7) N/A 14.0 μg/m3 (55) 55.0
 
Sept. 5, 2021, 3 p.m. 14.5 ppb (14) 3.7 ppb (4) N/A 11.0 ppb (11) N/A N/A N/A 0.55 ppb (7) N/A 18.0 μg/m3 (64) 64.0
 
Sept. 5, 2021, 2 p.m. 23.4 ppb (23) 9.3 ppb (9) N/A 14.0 ppb (14) N/A N/A N/A 0.71 ppb (8) N/A 13.0 μg/m3 (53) 53.0
 
Sept. 5, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 16.0 μg/m3 (60) 60.0
 
Sept. 5, 2021, noon N/A N/A N/A N/A N/A N/A N/A N/A N/A 19.0 μg/m3 (66) 66.0
 
Sept. 5, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 15.0 μg/m3 (58) 58.0
 
Sept. 5, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 13.0 μg/m3 (53) 53.0
 
Sept. 5, 2021, 9 a.m. 13.2 ppb (13) 1.5 ppb (2) N/A 12.0 ppb (12) N/A N/A N/A 0.56 ppb (7) N/A 16.0 μg/m3 (60) 60.0
 
Sept. 5, 2021, 8 a.m. 9.6 ppb (10) 0.4 ppb (1) N/A 9.0 ppb (9) N/A N/A N/A 0.48 ppb (6) N/A 18.0 μg/m3 (64) 64.0
 
Sept. 5, 2021, 7 a.m. 8.3 ppb (8) 0.2 ppb (1) N/A 8.0 ppb (8) N/A N/A N/A 0.44 ppb (5) N/A 18.0 μg/m3 (64) 64.0
 
Sept. 5, 2021, 6 a.m. 8.6 ppb (9) 0.0 ppb (0) N/A 9.0 ppb (9) N/A N/A N/A 0.48 ppb (6) N/A 16.0 μg/m3 (60) 60.0
 
Sept. 5, 2021, 5 a.m. 12.7 ppb (12) 0.1 ppb (1) N/A 13.0 ppb (13) N/A N/A N/A 0.51 ppb (6) N/A 16.0 μg/m3 (60) 60.0
 
Sept. 5, 2021, 4 a.m. 11.5 ppb (11) 0.0 ppb (0) N/A 12.0 ppb (12) N/A N/A N/A 0.52 ppb (6) N/A 20.0 μg/m3 (68) 68.0
 
Sept. 5, 2021, 3 a.m. 15.7 ppb (15) 1.0 ppb (1) N/A 15.0 ppb (15) N/A N/A N/A 0.64 ppb (7) N/A 21.0 μg/m3 (70) 70.0
 
Sept. 5, 2021, 2 a.m. 16.3 ppb (16) 1.5 ppb (2) N/A 15.0 ppb (15) N/A N/A N/A 0.7 ppb (8) N/A 16.0 μg/m3 (60) 60.0
 
Sept. 5, 2021, 1 a.m. 9.2 ppb (9) 0.5 ppb (1) N/A 9.0 ppb (9) N/A N/A N/A 0.5 ppb (6) N/A 12.0 μg/m3 (50) 50.0
 
Sept. 5, 2021, midnight 9.5 ppb (9) 0.5 ppb (1) N/A 9.0 ppb (9) N/A N/A N/A 0.54 ppb (6) N/A 18.0 μg/m3 (64) 64.0
 
Sept. 4, 2021, 11 p.m. 11.6 ppb (11) 1.1 ppb (2) N/A 11.0 ppb (11) N/A N/A N/A 0.6 ppb (7) N/A 17.0 μg/m3 (62) 62.0
 
Sept. 4, 2021, 10 p.m. 9.5 ppb (9) 0.8 ppb (1) N/A 9.0 ppb (9) N/A N/A N/A 0.55 ppb (7) N/A 20.0 μg/m3 (68) 68.0
 
Sept. 4, 2021, 9 p.m. 11.4 ppb (11) 1.0 ppb (1) N/A 10.0 ppb (10) N/A N/A N/A 0.63 ppb (7) N/A 19.0 μg/m3 (66) 66.0
 
Sept. 4, 2021, 8 p.m. 10.1 ppb (10) 1.0 ppb (1) N/A 9.0 ppb (9) N/A N/A N/A 0.59 ppb (7) N/A 17.0 μg/m3 (62) 62.0
 
Sept. 4, 2021, 7 p.m. 10.4 ppb (10) 1.2 ppb (2) N/A 9.0 ppb (9) N/A N/A N/A 0.56 ppb (7) N/A 21.0 μg/m3 (70) 70.0
 
Sept. 4, 2021, 6 p.m. 15.3 ppb (15) 2.7 ppb (3) N/A 13.0 ppb (13) N/A N/A N/A 0.67 ppb (8) N/A 23.0 μg/m3 (74) 74.0
 
Sept. 4, 2021, 5 p.m. 16.9 ppb (16) 3.9 ppb (4) N/A 13.0 ppb (13) N/A N/A N/A 0.7 ppb (8) N/A 21.0 μg/m3 (70) 70.0
 
Sept. 4, 2021, 4 p.m. 12.7 ppb (12) 2.8 ppb (3) N/A 10.0 ppb (10) N/A N/A N/A 0.59 ppb (7) N/A 22.0 μg/m3 (72) 72.0
 
Sept. 4, 2021, 3 p.m. 16.8 ppb (16) 4.6 ppb (5) N/A 12.0 ppb (12) N/A N/A N/A 0.62 ppb (7) N/A 27.0 μg/m3 (83) 83.0
 
Sept. 4, 2021, 2 p.m. 30.8 ppb (30) 14.0 ppb (14) N/A 17.0 ppb (17) N/A N/A N/A 0.77 ppb (10) N/A 18.0 μg/m3 (64) 64.0
 
Sept. 4, 2021, 1 p.m. 24.1 ppb (23) 9.1 ppb (9) N/A 15.0 ppb (15) N/A N/A N/A 0.72 ppb (8) N/A 24.0 μg/m3 (77) 77.0
 
Sept. 4, 2021, noon 10.0 ppb (10) 0.1 ppb (1) N/A 10.0 ppb (10) N/A N/A N/A 0.51 ppb (6) N/A 16.0 μg/m3 (60) 60.0
 
Sept. 4, 2021, 11 a.m. 9.7 ppb (10) 0.0 ppb (0) N/A 10.0 ppb (10) N/A N/A N/A 0.47 ppb (6) N/A 23.0 μg/m3 (74) 74.0
 
Sept. 4, 2021, 10 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
 
Sept. 4, 2021, 9 a.m. 13.4 ppb (13) 0.4 ppb (1) N/A 13.0 ppb (13) N/A N/A N/A 0.48 ppb (6) N/A 23.0 μg/m3 (74) 74.0
 
Sept. 4, 2021, 8 a.m. 7.2 ppb (7) 0.0 ppb (0) N/A 7.0 ppb (7) N/A N/A N/A 0.42 ppb (5) N/A 21.0 μg/m3 (70) 70.0
 
Sept. 4, 2021, 7 a.m. 5.8 ppb (6) 0.0 ppb (0) N/A 6.0 ppb (6) N/A N/A N/A 0.39 ppb (5) N/A 22.0 μg/m3 (72) 72.0
 
Sept. 4, 2021, 6 a.m. 6.6 ppb (7) 0.1 ppb (1) N/A 7.0 ppb (7) N/A N/A N/A 0.42 ppb (5) N/A 20.0 μg/m3 (68) 68.0
 
Sept. 4, 2021, 5 a.m. 9.3 ppb (9) 0.1 ppb (1) N/A 9.0 ppb (9) N/A N/A N/A 0.48 ppb (6) N/A 25.0 μg/m3 (79) 79.0
 
Sept. 4, 2021, 4 a.m. 11.7 ppb (12) 0.3 ppb (1) N/A 11.0 ppb (11) N/A N/A N/A 0.52 ppb (6) N/A 23.0 μg/m3 (74) 74.0
 
Sept. 4, 2021, 3 a.m. 20.2 ppb (20) 2.1 ppb (2) N/A 18.0 ppb (17) N/A N/A N/A 0.65 ppb (8) N/A 25.0 μg/m3 (79) 79.0
 
Sept. 4, 2021, 2 a.m. 23.5 ppb (23) 3.4 ppb (4) N/A 20.0 ppb (19) N/A N/A N/A 0.74 ppb (8) N/A 23.0 μg/m3 (74) 74.0
 
Sept. 4, 2021, 1 a.m. 13.3 ppb (13) 1.0 ppb (1) N/A 12.0 ppb (12) N/A N/A N/A 0.61 ppb (7) N/A 27.0 μg/m3 (83) 83.0
 
Sept. 4, 2021, midnight 12.6 ppb (12) 1.4 ppb (2) N/A 11.0 ppb (11) N/A N/A N/A 0.51 ppb (6) N/A 22.0 μg/m3 (72) 72.0
 
Sept. 3, 2021, 11 p.m. 16.7 ppb (16) 2.3 ppb (3) N/A 14.0 ppb (14) N/A N/A N/A 0.56 ppb (7) N/A 20.0 μg/m3 (68) 68.0
 
Sept. 3, 2021, 10 p.m. 20.3 ppb (20) 3.2 ppb (4) N/A 17.0 ppb (17) N/A N/A N/A 0.61 ppb (7) N/A 24.0 μg/m3 (77) 77.0
 
Sept. 3, 2021, 9 p.m. 18.1 ppb (18) 3.0 ppb (3) N/A 15.0 ppb (15) N/A N/A N/A 0.57 ppb (7) N/A 23.0 μg/m3 (74) 74.0
 
Sept. 3, 2021, 8 p.m. 8.2 ppb (8) 0.7 ppb (1) N/A 7.0 ppb (7) N/A N/A N/A 0.45 ppb (6) N/A 26.0 μg/m3 (81) 81.0
 
Sept. 3, 2021, 7 p.m. 23.8 ppb (23) 6.2 ppb (6) N/A 18.0 ppb (17) N/A N/A N/A 0.61 ppb (7) N/A 32.0 μg/m3 (93) 93.0
 
Sept. 3, 2021, 6 p.m. 23.6 ppb (23) 7.2 ppb (7) N/A 16.0 ppb (16) N/A N/A N/A 0.57 ppb (7) N/A 23.0 μg/m3 (74) 74.0
 
Sept. 3, 2021, 5 p.m. 32.6 ppb (31) 13.5 ppb (13) N/A 19.0 ppb (18) N/A N/A N/A 0.6 ppb (7) N/A 26.0 μg/m3 (81) 81.0
 
Sept. 3, 2021, 4 p.m. 35.8 ppb (34) 16.7 ppb (16) N/A 19.0 ppb (18) N/A N/A N/A 0.57 ppb (7) N/A 23.0 μg/m3 (74) 74.0
 
Sept. 3, 2021, 3 p.m. 12.5 ppb (12) 3.4 ppb (4) N/A 9.0 ppb (9) N/A N/A N/A 0.51 ppb (6) N/A 20.0 μg/m3 (68) 68.0
 
Sept. 3, 2021, 2 p.m. 6.1 ppb (6) 0.3 ppb (1) N/A 6.0 ppb (6) N/A N/A N/A 0.43 ppb (5) N/A 25.0 μg/m3 (79) 79.0
 
Sept. 3, 2021, 1 p.m. 6.4 ppb (7) 0.2 ppb (1) N/A 6.0 ppb (6) N/A N/A N/A 0.43 ppb (5) N/A 12.0 μg/m3 (50) 50.0
 
Sept. 3, 2021, noon 8.7 ppb (9) 0.6 ppb (1) N/A 8.0 ppb (8) N/A N/A N/A 0.44 ppb (5) N/A 21.0 μg/m3 (70) 70.0
 
Sept. 3, 2021, 11 a.m. 5.3 ppb (5) 0.0 ppb (0) N/A 5.0 ppb (5) N/A N/A N/A 0.41 ppb (5) N/A 20.0 μg/m3 (68) 68.0
 
Sept. 3, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 18.0 μg/m3 (64) 64.0
 
Sept. 3, 2021, 9 a.m. 9.5 ppb (9) 1.7 ppb (2) N/A 8.0 ppb (8) N/A N/A N/A 0.44 ppb (5) N/A 22.0 μg/m3 (72) 72.0
 
Sept. 3, 2021, 8 a.m. 10.3 ppb (10) 1.8 ppb (2) N/A 9.0 ppb (9) N/A N/A N/A 0.44 ppb (5) N/A 16.0 μg/m3 (60) 60.0
 
Sept. 3, 2021, 7 a.m. 9.3 ppb (9) 1.2 ppb (2) N/A 8.0 ppb (8) N/A N/A N/A 0.43 ppb (5) N/A 23.0 μg/m3 (74) 74.0
 
Sept. 3, 2021, 6 a.m. 7.5 ppb (8) 0.8 ppb (1) N/A 7.0 ppb (7) N/A N/A N/A 0.4 ppb (5) N/A 18.0 μg/m3 (64) 64.0
 
Sept. 3, 2021, 5 a.m. 7.0 ppb (7) 0.4 ppb (1) N/A 7.0 ppb (7) N/A N/A N/A 0.39 ppb (5) N/A 15.0 μg/m3 (58) 58.0
 
Sept. 3, 2021, 4 a.m. 6.8 ppb (7) 0.4 ppb (1) N/A 7.0 ppb (7) N/A N/A N/A 0.37 ppb (5) N/A 14.0 μg/m3 (55) 55.0
 
Sept. 3, 2021, 3 a.m. 8.9 ppb (9) 0.9 ppb (1) N/A 8.0 ppb (8) N/A N/A N/A 0.4 ppb (5) N/A 17.0 μg/m3 (62) 62.0
 
Sept. 3, 2021, 2 a.m. 8.5 ppb (9) 0.8 ppb (1) N/A 8.0 ppb (8) N/A N/A N/A 0.41 ppb (5) N/A 19.0 μg/m3 (66) 66.0
 
Sept. 3, 2021, 1 a.m. 23.3 ppb (22) 7.7 ppb (8) N/A 16.0 ppb (16) N/A N/A N/A 0.63 ppb (7) N/A 22.0 μg/m3 (72) 72.0
 
Sept. 3, 2021, midnight 20.8 ppb (20) 6.0 ppb (6) N/A 15.0 ppb (15) N/A N/A N/A 0.63 ppb (7) N/A 21.0 μg/m3 (70) 70.0
 
Sept. 2, 2021, 11 p.m. 23.6 ppb (23) 7.4 ppb (7) N/A 16.0 ppb (16) N/A N/A N/A 0.6 ppb (7) N/A 25.0 μg/m3 (79) 79.0
 
Sept. 2, 2021, 10 p.m. 27.8 ppb (27) 9.7 ppb (10) N/A 18.0 ppb (17) N/A N/A N/A 0.64 ppb (7) N/A 27.0 μg/m3 (83) 83.0
 
Sept. 2, 2021, 9 p.m. 30.1 ppb (29) 10.1 ppb (10) N/A 20.0 ppb (19) N/A N/A N/A 0.63 ppb (7) N/A 30.0 μg/m3 (89) 89.0
 
Sept. 2, 2021, 8 p.m. 31.7 ppb (30) 11.1 ppb (11) N/A 21.0 ppb (20) N/A N/A N/A 0.68 ppb (8) N/A 25.0 μg/m3 (79) 79.0
 
Sept. 2, 2021, 7 p.m. 25.9 ppb (25) 9.5 ppb (9) N/A 16.0 ppb (16) N/A N/A N/A 0.53 ppb (6) N/A 29.0 μg/m3 (87) 87.0
 
Sept. 2, 2021, 6 p.m. 28.5 ppb (27) 10.7 ppb (11) N/A 18.0 ppb (17) N/A N/A N/A 0.58 ppb (7) N/A 24.0 μg/m3 (77) 77.0
 
Sept. 2, 2021, 5 p.m. 36.6 ppb (35) 15.8 ppb (15) N/A 21.0 ppb (20) N/A N/A N/A 0.58 ppb (7) N/A 25.0 μg/m3 (79) 79.0
 
Sept. 2, 2021, 4 p.m. 16.4 ppb (16) 5.8 ppb (6) N/A 11.0 ppb (11) N/A N/A N/A 0.44 ppb (5) N/A 24.0 μg/m3 (77) 77.0
 
Sept. 2, 2021, 3 p.m. 8.6 ppb (9) 2.2 ppb (3) N/A 6.0 ppb (6) N/A N/A N/A 0.42 ppb (5) N/A 22.0 μg/m3 (72) 72.0
 
Sept. 2, 2021, 2 p.m. 7.9 ppb (8) 1.2 ppb (2) N/A 7.0 ppb (7) N/A N/A N/A 0.42 ppb (5) N/A 23.0 μg/m3 (74) 74.0
 
Sept. 2, 2021, 1 p.m. 6.6 ppb (7) 1.0 ppb (1) N/A 6.0 ppb (6) N/A N/A N/A 0.39 ppb (5) N/A 16.0 μg/m3 (60) 60.0
 
Sept. 2, 2021, noon 3.8 ppb (4) 0.1 ppb (1) N/A 4.0 ppb (4) N/A N/A N/A 0.35 ppb (4) N/A 14.0 μg/m3 (55) 55.0
 
Sept. 2, 2021, 11 a.m. 13.4 ppb (13) 3.2 ppb (4) 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
 
Sept. 2, 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
 
Sept. 2, 2021, 9 a.m. 7.5 ppb (8) 1.1 ppb (2) N/A 6.0 ppb (6) N/A N/A N/A 0.35 ppb (4) N/A 11.0 μg/m3 (46) 46.0
 
Sept. 2, 2021, 8 a.m. 8.5 ppb (9) 1.3 ppb (2) N/A 7.0 ppb (7) N/A N/A N/A 0.36 ppb (5) N/A 16.0 μg/m3 (60) 60.0
 
Sept. 2, 2021, 7 a.m. 7.5 ppb (8) 1.2 ppb (2) N/A 6.0 ppb (6) N/A N/A N/A 0.36 ppb (5) N/A 18.0 μg/m3 (64) 64.0
 
Sept. 2, 2021, 6 a.m. 8.5 ppb (9) 1.6 ppb (2) N/A 7.0 ppb (7) N/A N/A N/A 0.37 ppb (5) N/A 13.0 μg/m3 (53) 53.0
 
Sept. 2, 2021, 5 a.m. 6.9 ppb (7) 1.6 ppb (2) N/A 5.0 ppb (5) N/A N/A N/A 0.33 ppb (4) N/A 11.0 μg/m3 (46) 46.0
 
Sept. 2, 2021, 4 a.m. 15.1 ppb (15) 4.7 ppb (5) N/A 10.0 ppb (10) N/A N/A N/A 0.44 ppb (5) N/A 11.0 μg/m3 (46) 46.0
 
Sept. 2, 2021, 3 a.m. 13.7 ppb (13) 4.5 ppb (5) N/A 9.0 ppb (9) N/A N/A N/A 0.41 ppb (5) N/A 14.0 μg/m3 (55) 55.0
 
Sept. 2, 2021, 2 a.m. 15.8 ppb (15) 5.9 ppb (6) N/A 10.0 ppb (10) N/A N/A N/A 0.51 ppb (6) N/A 14.0 μg/m3 (55) 55.0
 
Sept. 2, 2021, 1 a.m. 17.1 ppb (17) 6.3 ppb (6) N/A 11.0 ppb (11) N/A N/A N/A 0.57 ppb (7) N/A 11.0 μg/m3 (46) 46.0
 
Sept. 2, 2021, midnight 17.9 ppb (17) 6.7 ppb (7) N/A 11.0 ppb (11) N/A N/A N/A 0.45 ppb (6) N/A 15.0 μg/m3 (58) 58.0
 
Sept. 1, 2021, 11 p.m. 17.3 ppb (17) 5.9 ppb (6) N/A 11.0 ppb (11) N/A N/A N/A 0.52 ppb (6) N/A 12.0 μg/m3 (50) 50.0
 
Sept. 1, 2021, 10 p.m. 18.2 ppb (18) 6.0 ppb (6) N/A 12.0 ppb (12) N/A N/A N/A 0.43 ppb (5) N/A 13.0 μg/m3 (53) 53.0
 
Sept. 1, 2021, 9 p.m. 22.5 ppb (22) 8.5 ppb (9) N/A 14.0 ppb (14) N/A N/A N/A 0.45 ppb (6) N/A 11.0 μg/m3 (46) 46.0
 
Sept. 1, 2021, 8 p.m. 22.8 ppb (22) 8.8 ppb (9) N/A 14.0 ppb (14) N/A N/A N/A 0.5 ppb (6) N/A 14.0 μg/m3 (55) 55.0
 
Sept. 1, 2021, 7 p.m. 18.6 ppb (18) 6.6 ppb (7) N/A 12.0 ppb (12) N/A N/A N/A 0.39 ppb (5) N/A 9.0 μg/m3 (38) 38.0
 
Sept. 1, 2021, 6 p.m. 18.2 ppb (18) 7.2 ppb (7) N/A 11.0 ppb (11) N/A N/A N/A 0.37 ppb (5) N/A 9.0 μg/m3 (38) 38.0
 
Sept. 1, 2021, 5 p.m. 9.4 ppb (9) 2.3 ppb (3) N/A 7.0 ppb (7) N/A N/A N/A 0.3 ppb (4) N/A 13.0 μg/m3 (53) 53.0
 
Sept. 1, 2021, 4 p.m. 20.0 ppb (19) 7.6 ppb (8) N/A 12.0 ppb (12) N/A N/A N/A 0.4 ppb (5) N/A 12.0 μg/m3 (50) 50.0
 
Sept. 1, 2021, 3 p.m. 18.5 ppb (18) 6.3 ppb (6) N/A 12.0 ppb (12) N/A N/A N/A 0.42 ppb (5) N/A 13.0 μg/m3 (53) 53.0
 
Sept. 1, 2021, 2 p.m. 28.9 ppb (28) 11.7 ppb (12) N/A 17.0 ppb (17) N/A N/A N/A 0.55 ppb (7) N/A 18.0 μg/m3 (64) 64.0
 
Sept. 1, 2021, 1 p.m. 8.9 ppb (9) 2.0 ppb (2) N/A 7.0 ppb (7) N/A N/A N/A 0.37 ppb (5) N/A 8.0 μg/m3 (34) 34.0
 
Sept. 1, 2021, noon 25.4 ppb (24) 9.4 ppb (9) 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
 
Sept. 1, 2021, 11 a.m. 14.6 ppb (14) 3.9 ppb (4) N/A 11.0 ppb (11) N/A N/A N/A 0.35 ppb (4) N/A 11.0 μg/m3 (46) 46.0
 
Sept. 1, 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
 
Sept. 1, 2021, 9 a.m. 10.4 ppb (10) 2.2 ppb (3) N/A 8.0 ppb (8) N/A N/A N/A 0.34 ppb (4) N/A 16.0 μg/m3 (60) 60.0
 
Sept. 1, 2021, 8 a.m. 10.4 ppb (10) 2.4 ppb (3) N/A 8.0 ppb (8) N/A N/A N/A 0.31 ppb (4) N/A 9.0 μg/m3 (38) 38.0
 
Sept. 1, 2021, 7 a.m. 9.3 ppb (9) 2.2 ppb (3) N/A 7.0 ppb (7) N/A N/A N/A 0.33 ppb (4) N/A 12.0 μg/m3 (50) 50.0
 
Sept. 1, 2021, 6 a.m. 9.2 ppb (9) 2.7 ppb (3) 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
 
Sept. 1, 2021, 5 a.m. 13.0 ppb (13) 4.1 ppb (4) N/A 9.0 ppb (9) N/A N/A N/A 0.36 ppb (5) N/A 14.0 μg/m3 (55) 55.0
 
Sept. 1, 2021, 4 a.m. 14.9 ppb (15) 4.6 ppb (5) N/A 10.0 ppb (10) N/A N/A N/A 0.38 ppb (5) N/A 11.0 μg/m3 (46) 46.0
 
Sept. 1, 2021, 3 a.m. 19.0 ppb (18) 6.5 ppb (7) N/A 13.0 ppb (13) N/A N/A N/A 0.47 ppb (6) N/A 10.0 μg/m3 (42) 42.0
 
Sept. 1, 2021, 2 a.m. 14.2 ppb (14) 3.4 ppb (4) 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
 
Sept. 1, 2021, 1 a.m. 20.6 ppb (20) 7.6 ppb (8) N/A 13.0 ppb (13) N/A N/A N/A 0.58 ppb (7) N/A 16.0 μg/m3 (60) 60.0
 
Sept. 1, 2021, midnight 14.1 ppb (14) 4.1 ppb (4) N/A 10.0 ppb (10) N/A N/A N/A 0.4 ppb (5) N/A 13.0 μg/m3 (53) 53.0
 
Aug. 31, 2021, 11 p.m. 20.1 ppb (19) 6.4 ppb (7) N/A 14.0 ppb (14) N/A N/A N/A 0.47 ppb (6) N/A 17.0 μg/m3 (62) 62.0
 
Aug. 31, 2021, 10 p.m. 23.7 ppb (23) 7.7 ppb (8) N/A 16.0 ppb (16) N/A N/A N/A 0.48 ppb (6) N/A 16.0 μg/m3 (60) 60.0
 
Aug. 31, 2021, 9 p.m. 25.4 ppb (24) 7.4 ppb (7) N/A 18.0 ppb (17) N/A N/A N/A 0.49 ppb (6) N/A 16.0 μg/m3 (60) 60.0
 
Aug. 31, 2021, 8 p.m. 28.1 ppb (27) 9.3 ppb (9) N/A 19.0 ppb (18) N/A N/A N/A 0.56 ppb (7) N/A 18.0 μg/m3 (64) 64.0
 
Aug. 31, 2021, 7 p.m. 31.0 ppb (30) 12.3 ppb (12) N/A 19.0 ppb (18) N/A N/A N/A 0.5 ppb (6) N/A 15.0 μg/m3 (58) 58.0
 
Aug. 31, 2021, 6 p.m. 34.0 ppb (33) 14.3 ppb (14) N/A 20.0 ppb (19) N/A N/A N/A 0.55 ppb (7) N/A 21.0 μg/m3 (70) 70.0
 
Aug. 31, 2021, 5 p.m. 37.0 ppb (35) 17.4 ppb (17) N/A 20.0 ppb (19) N/A N/A N/A 0.53 ppb (6) N/A 23.0 μg/m3 (74) 74.0
 
Aug. 31, 2021, 4 p.m. 39.2 ppb (37) 19.8 ppb (19) N/A 19.0 ppb (18) N/A N/A N/A 0.52 ppb (6) N/A 21.0 μg/m3 (70) 70.0
 
Aug. 31, 2021, 3 p.m. 38.1 ppb (36) 18.1 ppb (18) N/A 20.0 ppb (19) N/A N/A N/A 0.56 ppb (7) N/A 23.0 μg/m3 (74) 74.0
 
Aug. 31, 2021, 2 p.m. 31.0 ppb (30) 10.0 ppb (10) N/A 21.0 ppb (20) N/A N/A N/A 0.49 ppb (6) N/A 21.0 μg/m3 (70) 70.0
 
Aug. 31, 2021, 1 p.m. 38.6 ppb (37) 12.6 ppb (12) N/A 26.0 ppb (25) N/A N/A N/A 0.53 ppb (6) N/A 12.0 μg/m3 (50) 50.0
 
Aug. 31, 2021, noon 28.7 ppb (28) 8.5 ppb (9) N/A 20.0 ppb (19) N/A N/A N/A 0.47 ppb (6) N/A 14.0 μg/m3 (55) 55.0
 
Aug. 31, 2021, 11 a.m. 13.0 ppb (13) 0.5 ppb (1) N/A 13.0 ppb (13) N/A N/A N/A 0.31 ppb (4) N/A 15.0 μg/m3 (58) 58.0
 
Aug. 31, 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
 
Aug. 31, 2021, 9 a.m. 9.0 ppb (9) 0.4 ppb (1) N/A 9.0 ppb (9) N/A N/A N/A 0.3 ppb (4) N/A 15.0 μg/m3 (58) 58.0
 
Aug. 31, 2021, 8 a.m. 13.6 ppb (13) 1.7 ppb (2) N/A 12.0 ppb (12) N/A N/A N/A 0.33 ppb (4) N/A 19.0 μg/m3 (66) 66.0
 
Aug. 31, 2021, 7 a.m. 16.3 ppb (16) 1.9 ppb (2) N/A 14.0 ppb (14) N/A N/A N/A 0.37 ppb (5) N/A 17.0 μg/m3 (62) 62.0
 
Aug. 31, 2021, 6 a.m. 22.0 ppb (21) 3.9 ppb (4) N/A 18.0 ppb (17) N/A N/A N/A 0.46 ppb (6) N/A 15.0 μg/m3 (58) 58.0
 
Aug. 31, 2021, 5 a.m. 15.3 ppb (15) 0.6 ppb (1) N/A 15.0 ppb (15) N/A N/A N/A 0.4 ppb (5) N/A 16.0 μg/m3 (60) 60.0
 
Aug. 31, 2021, 4 a.m. 20.8 ppb (20) 4.6 ppb (5) N/A 16.0 ppb (16) N/A N/A N/A 0.47 ppb (6) N/A 16.0 μg/m3 (60) 60.0
 
Aug. 31, 2021, 3 a.m. 23.5 ppb (23) 5.3 ppb (5) N/A 18.0 ppb (17) N/A N/A N/A 0.5 ppb (6) N/A 23.0 μg/m3 (74) 74.0
 
Aug. 31, 2021, 2 a.m. 25.7 ppb (25) 6.2 ppb (6) N/A 19.0 ppb (18) N/A N/A N/A 0.66 ppb (8) N/A 21.0 μg/m3 (70) 70.0
 
Aug. 31, 2021, 1 a.m. 24.4 ppb (24) 6.3 ppb (6) N/A 18.0 ppb (17) N/A N/A N/A 0.68 ppb (8) N/A 18.0 μg/m3 (64) 64.0
 
Aug. 31, 2021, midnight 23.3 ppb (22) 5.1 ppb (5) N/A 18.0 ppb (17) N/A N/A N/A 0.55 ppb (7) N/A 16.0 μg/m3 (60) 60.0