ID: 1473

AQSQID: 370630099

Site Name: Burdens Creek

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

Updated: Aug. 3, 2021, 3:56 a.m.

Location: Durham (Triangle Expy), NC

Reporting: True, Located: True

Current AQI: 84.0

Durham (Triangle Expy) NC, US: 35.889402, -78.8747

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
Aug. 3, 2021, 2 a.m. N/A N/A N/A 3.0 ppb (3) N/A N/A N/A 0.3 ppb (4) 34.0 μg/m3 (32) 27.6 μg/m3 (84) 84.0
 
Aug. 3, 2021, 1 a.m. N/A N/A N/A 3.0 ppb (3) N/A N/A N/A 0.29 ppb (4) 34.0 μg/m3 (32) 26.6 μg/m3 (82) 82.0
 
Aug. 3, 2021, midnight N/A N/A N/A 2.0 ppb (2) N/A N/A N/A 0.29 ppb (4) 33.0 μg/m3 (31) 26.2 μg/m3 (81) 81.0
 
Aug. 2, 2021, 11 p.m. N/A N/A N/A 2.0 ppb (2) N/A N/A N/A 0.28 ppb (4) 34.0 μg/m3 (32) 25.7 μg/m3 (80) 80.0
 
Aug. 2, 2021, 10 p.m. N/A N/A N/A 2.0 ppb (2) N/A N/A N/A 0.27 ppb (4) 32.0 μg/m3 (30) 24.6 μg/m3 (78) 78.0
 
Aug. 2, 2021, 9 p.m. N/A N/A N/A 2.0 ppb (2) N/A N/A N/A 0.27 ppb (4) 33.0 μg/m3 (31) 23.6 μg/m3 (76) 76.0
 
Aug. 2, 2021, 8 p.m. N/A N/A N/A 2.0 ppb (2) N/A N/A N/A 0.26 ppb (4) 32.0 μg/m3 (30) 23.8 μg/m3 (76) 76.0
 
Aug. 2, 2021, 7 p.m. N/A N/A N/A 2.0 ppb (2) N/A N/A N/A 0.26 ppb (4) 32.0 μg/m3 (30) 23.9 μg/m3 (76) 76.0
 
Aug. 2, 2021, 6 p.m. N/A N/A N/A 2.0 ppb (2) N/A N/A N/A 0.26 ppb (4) 33.0 μg/m3 (31) 23.8 μg/m3 (76) 76.0
 
Aug. 2, 2021, 5 p.m. N/A N/A N/A 2.0 ppb (2) N/A N/A N/A 0.26 ppb (4) 31.0 μg/m3 (29) 23.2 μg/m3 (75) 75.0
 
Aug. 2, 2021, 4 p.m. N/A N/A N/A 2.0 ppb (2) N/A N/A N/A 0.25 ppb (3) 30.0 μg/m3 (28) 21.9 μg/m3 (72) 72.0
 
Aug. 2, 2021, 3 p.m. N/A N/A N/A 2.0 ppb (2) N/A N/A N/A 0.25 ppb (3) 33.0 μg/m3 (31) 21.4 μg/m3 (71) 71.0
 
Aug. 2, 2021, 2 p.m. N/A N/A N/A 3.0 ppb (3) N/A N/A N/A 0.25 ppb (3) 34.0 μg/m3 (32) 21.5 μg/m3 (71) 71.0
 
Aug. 2, 2021, 1 p.m. N/A N/A N/A 4.0 ppb (4) N/A N/A N/A 0.25 ppb (3) 33.0 μg/m3 (31) 20.7 μg/m3 (70) 70.0
 
Aug. 2, 2021, noon N/A N/A N/A 6.0 ppb (6) N/A N/A N/A 0.25 ppb (3) 32.0 μg/m3 (30) 19.6 μg/m3 (67) 67.0
 
Aug. 2, 2021, 11 a.m. N/A N/A N/A 6.0 ppb (6) N/A N/A N/A 0.24 ppb (3) 28.0 μg/m3 (26) 18.3 μg/m3 (65) 65.0
 
Aug. 2, 2021, 10 a.m. N/A N/A N/A 3.0 ppb (3) N/A N/A N/A 0.22 ppb (3) 25.0 μg/m3 (24) 18.1 μg/m3 (64) 64.0
 
Aug. 2, 2021, 9 a.m. N/A N/A N/A 3.0 ppb (3) N/A N/A N/A N/A 26.0 μg/m3 (25) 18.3 μg/m3 (65) 65.0
 
Aug. 2, 2021, 8 a.m. N/A N/A N/A 2.0 ppb (2) N/A N/A N/A N/A 25.0 μg/m3 (24) 18.4 μg/m3 (65) 65.0
 
Aug. 2, 2021, 7 a.m. N/A N/A N/A 3.0 ppb (3) N/A N/A N/A 0.27 ppb (4) 25.0 μg/m3 (24) 19.4 μg/m3 (67) 67.0
 
Aug. 2, 2021, 6 a.m. N/A N/A N/A 4.0 ppb (4) N/A N/A N/A 0.31 ppb (4) 28.0 μg/m3 (26) 21.2 μg/m3 (71) 71.0
 
Aug. 2, 2021, 5 a.m. N/A N/A N/A 4.0 ppb (4) N/A N/A N/A 0.32 ppb (4) 31.0 μg/m3 (29) 23.1 μg/m3 (75) 75.0
 
Aug. 2, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A N/A 0.31 ppb (4) 31.0 μg/m3 (29) 23.2 μg/m3 (75) 75.0
 
Aug. 2, 2021, 3 a.m. N/A N/A N/A 2.0 ppb (2) N/A N/A N/A 0.29 ppb (4) 29.0 μg/m3 (27) 22.1 μg/m3 (73) 73.0
 
Aug. 2, 2021, 2 a.m. N/A N/A N/A 2.0 ppb (2) N/A N/A N/A 0.3 ppb (4) 27.0 μg/m3 (25) 21.7 μg/m3 (72) 72.0
 
Aug. 2, 2021, 1 a.m. N/A N/A N/A 2.0 ppb (2) N/A N/A N/A 0.29 ppb (4) 28.0 μg/m3 (26) 21.6 μg/m3 (71) 71.0
 
Aug. 2, 2021, midnight N/A N/A N/A 2.0 ppb (2) N/A N/A N/A 0.27 ppb (4) 28.0 μg/m3 (26) 21.3 μg/m3 (71) 71.0
 
Aug. 1, 2021, 11 p.m. N/A N/A N/A 2.0 ppb (2) N/A N/A N/A 0.26 ppb (4) 28.0 μg/m3 (26) 22.4 μg/m3 (73) 73.0
 
Aug. 1, 2021, 10 p.m. N/A N/A N/A 2.0 ppb (2) N/A N/A N/A 0.27 ppb (4) 30.0 μg/m3 (28) 23.9 μg/m3 (76) 76.0
 
Aug. 1, 2021, 9 p.m. N/A N/A N/A 2.0 ppb (2) N/A N/A N/A 0.27 ppb (4) 32.0 μg/m3 (30) 24.3 μg/m3 (77) 77.0
 
Aug. 1, 2021, 8 p.m. N/A N/A N/A 2.0 ppb (2) N/A N/A N/A 0.25 ppb (3) 26.0 μg/m3 (25) 19.9 μg/m3 (68) 68.0
 
Aug. 1, 2021, 7 p.m. N/A N/A N/A 2.0 ppb (2) N/A N/A N/A 0.24 ppb (3) 21.0 μg/m3 (20) 16.7 μg/m3 (61) 61.0
 
Aug. 1, 2021, 6 p.m. N/A N/A N/A 2.0 ppb (2) N/A N/A N/A 0.27 ppb (4) 29.0 μg/m3 (27) 22.6 μg/m3 (74) 74.0
 
Aug. 1, 2021, 5 p.m. N/A N/A N/A 2.0 ppb (2) N/A N/A N/A 0.27 ppb (4) 30.0 μg/m3 (28) 23.7 μg/m3 (76) 76.0
 
Aug. 1, 2021, 4 p.m. N/A N/A N/A 2.0 ppb (2) N/A N/A N/A 0.24 ppb (3) 21.0 μg/m3 (20) 15.6 μg/m3 (59) 59.0
 
Aug. 1, 2021, 3 p.m. N/A N/A N/A 2.0 ppb (2) N/A N/A N/A 0.25 ppb (3) 22.0 μg/m3 (21) 16.3 μg/m3 (60) 60.0
 
Aug. 1, 2021, 2 p.m. N/A N/A N/A 2.0 ppb (2) N/A N/A N/A 0.26 ppb (4) 24.0 μg/m3 (23) 17.4 μg/m3 (63) 63.0
 
Aug. 1, 2021, 1 p.m. N/A N/A N/A 3.0 ppb (3) N/A N/A N/A 0.28 ppb (4) 27.0 μg/m3 (25) 21.0 μg/m3 (70) 70.0
 
Aug. 1, 2021, noon N/A N/A N/A 2.0 ppb (2) N/A N/A N/A 0.28 ppb (4) 31.0 μg/m3 (29) 24.0 μg/m3 (77) 77.0
 
Aug. 1, 2021, 11 a.m. N/A N/A N/A 2.0 ppb (2) N/A N/A N/A 0.28 ppb (4) 30.0 μg/m3 (28) 23.6 μg/m3 (76) 76.0
 
Aug. 1, 2021, 10 a.m. N/A N/A N/A 3.0 ppb (3) N/A N/A N/A 0.32 ppb (4) 29.0 μg/m3 (27) 22.8 μg/m3 (74) 74.0
 
Aug. 1, 2021, 9 a.m. N/A N/A N/A 4.0 ppb (4) N/A N/A N/A N/A 29.0 μg/m3 (27) 22.6 μg/m3 (74) 74.0
 
Aug. 1, 2021, 8 a.m. N/A N/A N/A 4.0 ppb (4) N/A N/A N/A N/A 28.0 μg/m3 (26) 22.2 μg/m3 (73) 73.0
 
Aug. 1, 2021, 7 a.m. N/A N/A N/A 4.0 ppb (4) N/A N/A N/A 0.31 ppb (4) 29.0 μg/m3 (27) 22.2 μg/m3 (73) 73.0
 
Aug. 1, 2021, 6 a.m. N/A N/A N/A 4.0 ppb (4) N/A N/A N/A 0.31 ppb (4) 28.0 μg/m3 (26) 22.2 μg/m3 (73) 73.0
 
Aug. 1, 2021, 5 a.m. N/A N/A N/A 4.0 ppb (4) N/A N/A N/A 0.31 ppb (4) 28.0 μg/m3 (26) 22.0 μg/m3 (72) 72.0
 
Aug. 1, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A N/A 0.31 ppb (4) 28.0 μg/m3 (26) 21.7 μg/m3 (72) 72.0
 
Aug. 1, 2021, 3 a.m. N/A N/A N/A 4.0 ppb (4) N/A N/A N/A 0.31 ppb (4) 27.0 μg/m3 (25) 21.3 μg/m3 (71) 71.0
 
Aug. 1, 2021, 2 a.m. N/A N/A N/A 5.0 ppb (5) N/A N/A N/A 0.3 ppb (4) 26.0 μg/m3 (25) 20.8 μg/m3 (70) 70.0
 
Aug. 1, 2021, 1 a.m. N/A N/A N/A 4.0 ppb (4) N/A N/A N/A 0.31 ppb (4) 28.0 μg/m3 (26) 20.7 μg/m3 (70) 70.0
 
Aug. 1, 2021, midnight N/A N/A N/A 3.0 ppb (3) N/A N/A N/A 0.3 ppb (4) 28.0 μg/m3 (26) 21.6 μg/m3 (71) 71.0
 
July 31, 2021, 11 p.m. N/A N/A N/A 2.0 ppb (2) N/A N/A N/A 0.27 ppb (4) 32.0 μg/m3 (30) 25.0 μg/m3 (79) 79.0
 
July 31, 2021, 10 p.m. N/A N/A N/A 2.0 ppb (2) N/A N/A N/A 0.27 ppb (4) 28.0 μg/m3 (26) 21.9 μg/m3 (72) 72.0
 
July 31, 2021, 9 p.m. N/A N/A N/A 2.0 ppb (2) N/A N/A N/A 0.28 ppb (4) 28.0 μg/m3 (26) 20.2 μg/m3 (69) 69.0
 
July 31, 2021, 8 p.m. N/A N/A N/A 2.0 ppb (2) N/A N/A N/A 0.25 ppb (3) 27.0 μg/m3 (25) 19.9 μg/m3 (68) 68.0
 
July 31, 2021, 7 p.m. N/A N/A N/A 2.0 ppb (2) N/A N/A N/A 0.24 ppb (3) 28.0 μg/m3 (26) 20.9 μg/m3 (70) 70.0
 
July 31, 2021, 6 p.m. N/A N/A N/A 2.0 ppb (2) N/A N/A N/A 0.24 ppb (3) 25.0 μg/m3 (24) 18.6 μg/m3 (65) 65.0
 
July 31, 2021, 5 p.m. N/A N/A N/A 2.0 ppb (2) N/A N/A N/A 0.24 ppb (3) 23.0 μg/m3 (22) 17.7 μg/m3 (63) 63.0
 
July 31, 2021, 4 p.m. N/A N/A N/A 2.0 ppb (2) N/A N/A N/A 0.23 ppb (3) 24.0 μg/m3 (23) 17.3 μg/m3 (62) 62.0
 
July 31, 2021, 3 p.m. N/A N/A N/A 3.0 ppb (3) N/A N/A N/A 0.23 ppb (3) 26.0 μg/m3 (25) 17.6 μg/m3 (63) 63.0
 
July 31, 2021, 2 p.m. N/A N/A N/A 3.0 ppb (3) N/A N/A N/A 0.23 ppb (3) 25.0 μg/m3 (24) 17.6 μg/m3 (63) 63.0
 
July 31, 2021, 1 p.m. N/A N/A N/A 3.0 ppb (3) N/A N/A N/A 0.23 ppb (3) 28.0 μg/m3 (26) 18.0 μg/m3 (64) 64.0
 
July 31, 2021, noon N/A N/A N/A 4.0 ppb (4) N/A N/A N/A 0.23 ppb (3) 22.0 μg/m3 (21) 16.7 μg/m3 (61) 61.0
 
July 31, 2021, 11 a.m. N/A N/A N/A 3.0 ppb (3) N/A N/A N/A 0.22 ppb (3) 21.0 μg/m3 (20) 16.1 μg/m3 (60) 60.0
 
July 31, 2021, 10 a.m. N/A N/A N/A 3.0 ppb (3) N/A N/A N/A 0.21 ppb (3) 21.0 μg/m3 (20) 16.2 μg/m3 (60) 60.0
 
July 31, 2021, 9 a.m. N/A N/A N/A 3.0 ppb (3) N/A N/A N/A N/A 21.0 μg/m3 (20) 16.0 μg/m3 (60) 60.0
 
July 31, 2021, 8 a.m. N/A N/A N/A 3.0 ppb (3) N/A N/A N/A N/A 21.0 μg/m3 (20) 16.0 μg/m3 (60) 60.0
 
July 31, 2021, 7 a.m. N/A N/A N/A 4.0 ppb (4) N/A N/A N/A 0.24 ppb (3) 24.0 μg/m3 (23) 18.1 μg/m3 (64) 64.0
 
July 31, 2021, 6 a.m. N/A N/A N/A 5.0 ppb (5) N/A N/A N/A 0.28 ppb (4) 29.0 μg/m3 (27) 20.2 μg/m3 (69) 69.0
 
July 31, 2021, 5 a.m. N/A N/A N/A 5.0 ppb (5) N/A N/A N/A 0.29 ppb (4) 27.0 μg/m3 (25) 19.0 μg/m3 (66) 66.0
 
July 31, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A N/A 0.31 ppb (4) 26.0 μg/m3 (25) 18.4 μg/m3 (65) 65.0
 
July 31, 2021, 3 a.m. N/A N/A N/A 4.0 ppb (4) N/A N/A N/A 0.45 ppb (6) 24.0 μg/m3 (23) 17.7 μg/m3 (63) 63.0
 
July 31, 2021, 2 a.m. N/A N/A N/A 4.0 ppb (4) N/A N/A N/A 0.85 ppb (10) 22.0 μg/m3 (21) 16.6 μg/m3 (61) 61.0
 
July 31, 2021, 1 a.m. N/A N/A N/A 5.0 ppb (5) N/A N/A N/A 0.56 ppb (7) 21.0 μg/m3 (20) 15.1 μg/m3 (58) 58.0
 
July 31, 2021, midnight N/A N/A N/A 5.0 ppb (5) N/A N/A N/A 0.19 ppb (3) 21.0 μg/m3 (20) 14.3 μg/m3 (56) 56.0
 
July 30, 2021, 11 p.m. N/A N/A N/A 6.0 ppb (6) N/A N/A N/A 0.19 ppb (3) 20.0 μg/m3 (19) 13.7 μg/m3 (55) 55.0
 
July 30, 2021, 10 p.m. N/A N/A N/A 8.0 ppb (8) N/A N/A N/A 0.18 ppb (3) 19.0 μg/m3 (18) 13.3 μg/m3 (54) 54.0
 
July 30, 2021, 9 p.m. N/A N/A N/A 11.0 ppb (11) N/A N/A N/A 0.18 ppb (3) 20.0 μg/m3 (19) 13.6 μg/m3 (55) 55.0
 
July 30, 2021, 8 p.m. N/A N/A N/A 17.0 ppb (17) N/A N/A N/A 0.19 ppb (3) 21.0 μg/m3 (20) 14.3 μg/m3 (56) 56.0
 
July 30, 2021, 7 p.m. N/A N/A N/A 37.0 ppb (35) N/A N/A N/A 0.2 ppb (3) 22.0 μg/m3 (21) 14.7 μg/m3 (57) 57.0
 
July 30, 2021, 6 p.m. N/A N/A N/A 75.0 ppb (74) N/A N/A N/A 0.2 ppb (3) 23.0 μg/m3 (22) 14.6 μg/m3 (57) 74.0
 
July 30, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A N/A 0.22 ppb (3) 26.0 μg/m3 (25) 17.7 μg/m3 (63) 63.0
 
July 30, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A N/A 0.23 ppb (3) 25.0 μg/m3 (24) 17.9 μg/m3 (64) 64.0
 
July 30, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A N/A 0.23 ppb (3) N/A N/A 3.0
 
July 30, 2021, 2 p.m. N/A N/A N/A 4.0 ppb (4) N/A N/A N/A 0.23 ppb (3) 42.0 μg/m3 (39) 15.5 μg/m3 (59) 59.0
 
July 30, 2021, 1 p.m. N/A N/A N/A 2.0 ppb (2) N/A N/A N/A 0.21 ppb (3) 23.0 μg/m3 (22) 15.5 μg/m3 (59) 59.0
 
July 30, 2021, noon N/A N/A N/A 2.0 ppb (2) N/A N/A N/A 0.2 ppb (3) 21.0 μg/m3 (20) 14.0 μg/m3 (55) 55.0
 
July 30, 2021, 11 a.m. N/A N/A N/A 2.0 ppb (2) N/A N/A N/A 0.19 ppb (3) 19.0 μg/m3 (18) 13.6 μg/m3 (55) 55.0
 
July 30, 2021, 10 a.m. N/A N/A N/A 2.0 ppb (2) N/A N/A N/A 0.19 ppb (3) 19.0 μg/m3 (18) 13.5 μg/m3 (54) 54.0
 
July 30, 2021, 9 a.m. N/A N/A N/A 2.0 ppb (2) N/A N/A N/A N/A 18.0 μg/m3 (17) 13.3 μg/m3 (54) 54.0
 
July 30, 2021, 8 a.m. N/A N/A N/A 2.0 ppb (2) N/A N/A N/A N/A 18.0 μg/m3 (17) 13.0 μg/m3 (53) 53.0
 
July 30, 2021, 7 a.m. N/A N/A N/A 2.0 ppb (2) N/A N/A N/A 0.18 ppb (3) 18.0 μg/m3 (17) 12.8 μg/m3 (53) 53.0
 
July 30, 2021, 6 a.m. N/A N/A N/A 2.0 ppb (2) N/A N/A N/A 0.17 ppb (3) 18.0 μg/m3 (17) 12.4 μg/m3 (52) 52.0
 
July 30, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A N/A 0.17 ppb (3) 18.0 μg/m3 (17) 12.5 μg/m3 (52) 52.0
 
July 30, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A N/A 0.18 ppb (3) 18.0 μg/m3 (17) 13.4 μg/m3 (54) 54.0
 
July 30, 2021, 3 a.m. N/A N/A N/A 2.0 ppb (2) N/A N/A N/A 0.19 ppb (3) 21.0 μg/m3 (20) 14.6 μg/m3 (57) 57.0
 
July 30, 2021, 2 a.m. N/A N/A N/A 2.0 ppb (2) N/A N/A N/A 0.19 ppb (3) 21.0 μg/m3 (20) 14.7 μg/m3 (57) 57.0
 
July 30, 2021, 1 a.m. N/A N/A N/A 2.0 ppb (2) N/A N/A N/A 0.21 ppb (3) 24.0 μg/m3 (23) 16.0 μg/m3 (60) 60.0
 
July 30, 2021, midnight N/A N/A N/A 2.0 ppb (2) N/A N/A N/A 0.21 ppb (3) 24.0 μg/m3 (23) 16.8 μg/m3 (61) 61.0
 
July 29, 2021, 11 p.m. N/A N/A N/A 3.0 ppb (3) N/A N/A N/A 0.21 ppb (3) 24.0 μg/m3 (23) 17.7 μg/m3 (63) 63.0
 
July 29, 2021, 10 p.m. N/A N/A N/A 3.0 ppb (3) N/A N/A N/A 0.21 ppb (3) 27.0 μg/m3 (25) 18.4 μg/m3 (65) 65.0
 
July 29, 2021, 9 p.m. N/A N/A N/A 5.0 ppb (5) N/A N/A N/A 0.21 ppb (3) 26.0 μg/m3 (25) 15.7 μg/m3 (59) 59.0
 
July 29, 2021, 8 p.m. N/A N/A N/A 7.0 ppb (7) N/A N/A N/A 0.2 ppb (3) 24.0 μg/m3 (23) 14.7 μg/m3 (57) 57.0
 
July 29, 2021, 7 p.m. N/A N/A N/A 20.0 ppb (19) N/A N/A N/A 0.2 ppb (3) 22.0 μg/m3 (21) 13.6 μg/m3 (55) 55.0
 
July 29, 2021, 6 p.m. N/A N/A N/A 52.0 ppb (50) N/A N/A N/A 0.19 ppb (3) 20.0 μg/m3 (19) 12.7 μg/m3 (53) 53.0
 
July 29, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A N/A 0.19 ppb (3) 22.0 μg/m3 (21) 12.4 μg/m3 (52) 52.0
 
July 29, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A N/A 0.18 ppb (3) 19.0 μg/m3 (18) 11.8 μg/m3 (50) 50.0
 
July 29, 2021, 3 p.m. N/A N/A N/A 2.0 ppb (2) N/A N/A N/A 0.18 ppb (3) 17.0 μg/m3 (16) 10.3 μg/m3 (43) 43.0
 
July 29, 2021, 2 p.m. N/A N/A N/A 2.0 ppb (2) N/A N/A N/A 0.2 ppb (3) 17.0 μg/m3 (16) 9.5 μg/m3 (40) 40.0
 
July 29, 2021, 1 p.m. N/A N/A N/A 5.0 ppb (5) N/A N/A N/A 0.35 ppb (4) 18.0 μg/m3 (17) 9.0 μg/m3 (38) 38.0
 
July 29, 2021, noon N/A N/A N/A 9.0 ppb (9) N/A N/A N/A 0.61 ppb (7) 20.0 μg/m3 (19) 9.3 μg/m3 (39) 39.0
 
July 29, 2021, 11 a.m. N/A N/A N/A 5.0 ppb (5) N/A N/A N/A 0.46 ppb (6) 16.0 μg/m3 (15) 8.9 μg/m3 (38) 38.0
 
July 29, 2021, 10 a.m. N/A N/A N/A 2.0 ppb (2) N/A N/A N/A 0.17 ppb (3) 16.0 μg/m3 (15) 9.1 μg/m3 (38) 38.0
 
July 29, 2021, 9 a.m. N/A N/A N/A 2.0 ppb (2) N/A N/A N/A N/A 16.0 μg/m3 (15) 9.0 μg/m3 (38) 38.0
 
July 29, 2021, 8 a.m. N/A N/A N/A 1.0 ppb (1) N/A N/A N/A N/A 15.0 μg/m3 (14) 8.8 μg/m3 (37) 37.0
 
July 29, 2021, 7 a.m. N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 0.17 ppb (3) 15.0 μg/m3 (14) 9.0 μg/m3 (38) 38.0
 
July 29, 2021, 6 a.m. N/A N/A N/A 2.0 ppb (2) N/A N/A N/A 0.17 ppb (3) 14.0 μg/m3 (13) 8.8 μg/m3 (37) 37.0
 
July 29, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A N/A 0.17 ppb (3) 14.0 μg/m3 (13) 8.8 μg/m3 (37) 37.0
 
July 29, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A N/A 0.18 ppb (3) 13.0 μg/m3 (13) 9.0 μg/m3 (38) 38.0
 
July 29, 2021, 3 a.m. N/A N/A N/A 2.0 ppb (2) N/A N/A N/A 0.18 ppb (3) 13.0 μg/m3 (13) 8.6 μg/m3 (36) 36.0
 
July 29, 2021, 2 a.m. N/A N/A N/A 3.0 ppb (3) N/A N/A N/A 0.19 ppb (3) 13.0 μg/m3 (13) 9.7 μg/m3 (41) 41.0
 
July 29, 2021, 1 a.m. N/A N/A N/A 3.0 ppb (3) N/A N/A N/A 0.24 ppb (3) 16.0 μg/m3 (15) 11.4 μg/m3 (48) 48.0
 
July 29, 2021, midnight N/A N/A N/A 3.0 ppb (3) N/A N/A N/A 0.34 ppb (4) 17.0 μg/m3 (16) 11.3 μg/m3 (48) 48.0
 
July 28, 2021, 11 p.m. N/A N/A N/A 3.0 ppb (3) N/A N/A N/A 0.29 ppb (4) 18.0 μg/m3 (17) 11.5 μg/m3 (48) 48.0
 
July 28, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A N/A 0.43 ppb (5) 19.0 μg/m3 (18) 11.5 μg/m3 (48) 48.0
 
July 28, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A N/A 0.39 ppb (5) 16.0 μg/m3 (15) 10.9 μg/m3 (46) 46.0
 
July 28, 2021, 8 p.m. N/A N/A N/A 2.0 ppb (2) N/A N/A N/A 0.28 ppb (4) 21.0 μg/m3 (20) 13.9 μg/m3 (55) 55.0
 
July 28, 2021, 7 p.m. N/A N/A N/A 2.0 ppb (2) N/A N/A N/A 0.23 ppb (3) 24.0 μg/m3 (23) 15.0 μg/m3 (58) 58.0
 
July 28, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A N/A 0.23 ppb (3) 22.0 μg/m3 (21) 14.8 μg/m3 (57) 57.0
 
July 28, 2021, 5 p.m. N/A N/A N/A 2.0 ppb (2) N/A N/A N/A 0.24 ppb (3) 22.0 μg/m3 (21) 14.2 μg/m3 (56) 56.0
 
July 28, 2021, 4 p.m. N/A N/A N/A 2.0 ppb (2) N/A N/A N/A 0.24 ppb (3) 21.0 μg/m3 (20) 13.4 μg/m3 (54) 54.0
 
July 28, 2021, 3 p.m. N/A N/A N/A 3.0 ppb (3) N/A N/A N/A 0.26 ppb (4) 23.0 μg/m3 (22) 12.7 μg/m3 (53) 53.0
 
July 28, 2021, 2 p.m. N/A N/A N/A 5.0 ppb (5) N/A N/A N/A 0.27 ppb (4) 24.0 μg/m3 (23) 11.7 μg/m3 (49) 49.0
 
July 28, 2021, 1 p.m. N/A N/A N/A 4.0 ppb (4) N/A N/A N/A 0.23 ppb (3) 17.0 μg/m3 (16) 9.6 μg/m3 (40) 40.0
 
July 28, 2021, noon N/A N/A N/A 2.0 ppb (2) N/A N/A N/A 0.16 ppb (3) 16.0 μg/m3 (15) 7.8 μg/m3 (33) 33.0
 
July 28, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A N/A 0.14 ppb (2) 13.0 μg/m3 (13) 7.3 μg/m3 (31) 31.0
 
July 28, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A N/A 0.14 ppb (2) 13.0 μg/m3 (13) 7.5 μg/m3 (32) 32.0
 
July 28, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 15.0 μg/m3 (14) 7.6 μg/m3 (32) 32.0
 
July 28, 2021, 8 a.m. N/A N/A N/A 2.0 ppb (2) N/A N/A N/A N/A 13.0 μg/m3 (13) 7.4 μg/m3 (31) 31.0
 
July 28, 2021, 7 a.m. N/A N/A N/A 2.0 ppb (2) N/A N/A N/A 0.13 ppb (2) 14.0 μg/m3 (13) 7.3 μg/m3 (31) 31.0
 
July 28, 2021, 6 a.m. N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 0.13 ppb (2) 13.0 μg/m3 (13) 6.9 μg/m3 (29) 29.0
 
July 28, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A N/A 0.14 ppb (2) 14.0 μg/m3 (13) 7.1 μg/m3 (30) 30.0
 
July 28, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A N/A 0.14 ppb (2) 14.0 μg/m3 (13) 7.3 μg/m3 (31) 31.0
 
July 28, 2021, 3 a.m. N/A N/A N/A 2.0 ppb (2) N/A N/A N/A 0.17 ppb (3) 15.0 μg/m3 (14) 8.1 μg/m3 (34) 34.0
 
July 28, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A N/A 0.25 ppb (3) 16.0 μg/m3 (15) 9.4 μg/m3 (40) 40.0
 
July 28, 2021, 1 a.m. N/A N/A N/A 3.0 ppb (3) N/A N/A N/A 0.47 ppb (6) 16.0 μg/m3 (15) 10.5 μg/m3 (44) 44.0
 
July 28, 2021, midnight N/A N/A N/A 2.0 ppb (2) N/A N/A N/A 0.53 ppb (6) 15.0 μg/m3 (14) 10.6 μg/m3 (45) 45.0
 
July 27, 2021, 11 p.m. N/A N/A N/A 2.0 ppb (2) N/A N/A N/A 0.32 ppb (4) 18.0 μg/m3 (17) 11.1 μg/m3 (47) 47.0
 
July 27, 2021, 10 p.m. N/A N/A N/A 2.0 ppb (2) N/A N/A N/A 0.22 ppb (3) 16.0 μg/m3 (15) 10.7 μg/m3 (45) 45.0
 
July 27, 2021, 9 p.m. N/A N/A N/A 2.0 ppb (2) N/A N/A N/A 0.2 ppb (3) 15.0 μg/m3 (14) 10.4 μg/m3 (44) 44.0
 
July 27, 2021, 8 p.m. N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 0.18 ppb (3) 16.0 μg/m3 (15) 10.2 μg/m3 (43) 43.0
 
July 27, 2021, 7 p.m. N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 0.18 ppb (3) 15.0 μg/m3 (14) 9.6 μg/m3 (40) 40.0
 
July 27, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A N/A 0.18 ppb (3) 15.0 μg/m3 (14) 9.4 μg/m3 (40) 40.0
 
July 27, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A N/A 0.17 ppb (3) 14.0 μg/m3 (13) 8.9 μg/m3 (38) 38.0
 
July 27, 2021, 4 p.m. N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 0.17 ppb (3) 14.0 μg/m3 (13) 8.6 μg/m3 (36) 36.0
 
July 27, 2021, 3 p.m. N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 0.16 ppb (3) 14.0 μg/m3 (13) 8.9 μg/m3 (38) 38.0
 
July 27, 2021, 2 p.m. N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 0.15 ppb (2) 14.0 μg/m3 (13) 8.6 μg/m3 (36) 36.0
 
July 27, 2021, 1 p.m. N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 0.15 ppb (2) 12.0 μg/m3 (12) 6.5 μg/m3 (28) 28.0
 
July 27, 2021, noon N/A N/A N/A 2.0 ppb (2) N/A N/A N/A 0.15 ppb (2) 9.0 μg/m3 (9) 5.6 μg/m3 (24) 24.0
 
July 27, 2021, 11 a.m. N/A N/A N/A 2.0 ppb (2) N/A N/A N/A 0.16 ppb (3) 7.0 μg/m3 (7) 3.3 μg/m3 (14) 14.0
 
July 27, 2021, 10 a.m. N/A N/A N/A 2.0 ppb (2) N/A N/A N/A 0.14 ppb (2) 6.0 μg/m3 (6) 3.0 μg/m3 (13) 13.0
 
July 27, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 6.0 μg/m3 (6) 3.3 μg/m3 (14) 14.0
 
July 27, 2021, 8 a.m. N/A N/A N/A 2.0 ppb (2) N/A N/A N/A N/A 7.0 μg/m3 (7) 4.1 μg/m3 (18) 18.0
 
July 27, 2021, 7 a.m. N/A N/A N/A 2.0 ppb (2) N/A N/A N/A 0.18 ppb (3) 10.0 μg/m3 (10) 4.8 μg/m3 (20) 20.0
 
July 27, 2021, 6 a.m. N/A N/A N/A 2.0 ppb (2) N/A N/A N/A 0.18 ppb (3) 9.0 μg/m3 (9) 4.8 μg/m3 (20) 20.0
 
July 27, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A N/A 0.17 ppb (3) 9.0 μg/m3 (9) 4.7 μg/m3 (20) 20.0
 
July 27, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A N/A 0.22 ppb (3) 20.0 μg/m3 (19) 11.6 μg/m3 (49) 49.0
 
July 27, 2021, 3 a.m. N/A N/A N/A 3.0 ppb (3) N/A N/A N/A 0.24 ppb (3) 24.0 μg/m3 (23) 16.0 μg/m3 (60) 60.0