ID: 318

AQSQID: 130890002

Site Name: South Dekalb

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

Updated: July 30, 2021, 8:57 p.m.

Location: Decatur (Clifton Spgs Rd), GA

Reporting: True, Located: True

Current AQI: 41.0

Decatur (Clifton Spgs Rd) GA, US: 33.6906, -84.2731

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
July 30, 2021, 7 p.m. 2.7 ppb (3) 0.2 ppb (1) 3.0 ppb (3) 2.0 ppb (2) N/A 0.0 ppb (0) 44.0 ppb (41) 0.32 ppb (4) N/A N/A 41.0
 
July 30, 2021, 6 p.m. 2.4 ppb (3) 0.2 ppb (1) 3.0 ppb (3) 2.0 ppb (2) N/A 0.0 ppb (0) 54.0 ppb (50) 0.32 ppb (4) 31.0 μg/m3 (29) 18.1 μg/m3 (64) 64.0
 
July 30, 2021, 5 p.m. 3.1 ppb (3) 0.2 ppb (1) 4.0 ppb (4) 3.0 ppb (3) N/A 1.0 ppb (2) 60.0 ppb (68) 0.35 ppb (4) 31.0 μg/m3 (29) 18.9 μg/m3 (66) 68.0
 
July 30, 2021, 4 p.m. 4.7 ppb (5) 0.4 ppb (1) 5.0 ppb (5) 4.0 ppb (4) N/A 0.0 ppb (0) 51.0 ppb (48) 0.35 ppb (4) 30.0 μg/m3 (28) 18.2 μg/m3 (64) 64.0
 
July 30, 2021, 3 p.m. 7.7 ppb (8) 1.0 ppb (1) 8.0 ppb (8) 6.0 ppb (6) N/A 0.0 ppb (0) 36.0 ppb (34) N/A 30.0 μg/m3 (28) 19.4 μg/m3 (67) 67.0
 
July 30, 2021, 2 p.m. 13.2 ppb (13) 2.6 ppb (3) 12.0 ppb (12) 10.0 ppb (10) N/A 0.0 ppb (0) 21.0 ppb (20) N/A 32.0 μg/m3 (30) 20.9 μg/m3 (70) 70.0
 
July 30, 2021, 1 p.m. 21.9 ppb (21) 6.7 ppb (7) 20.0 ppb (19) 15.0 ppb (15) N/A 0.0 ppb (0) 6.0 ppb (6) N/A 35.0 μg/m3 (33) 21.2 μg/m3 (71) 71.0
 
July 30, 2021, noon 29.8 ppb (29) 15.9 ppb (15) 26.0 ppb (25) 14.0 ppb (14) N/A 0.0 ppb (0) 1.0 ppb (1) N/A 39.0 μg/m3 (37) 21.8 μg/m3 (72) 72.0
 
July 30, 2021, 11 a.m. 40.0 ppb (38) 24.7 ppb (24) 35.0 ppb (34) 15.0 ppb (15) N/A 0.0 ppb (0) 0.0 ppb (0) 0.58 ppb (7) 36.0 μg/m3 (34) 22.3 μg/m3 (73) 73.0
 
July 30, 2021, 10 a.m. 26.6 ppb (26) 11.5 ppb (11) 30.0 ppb (29) 15.0 ppb (15) N/A 0.0 ppb (0) 0.0 ppb (0) 0.48 ppb (6) 37.0 μg/m3 (35) 23.0 μg/m3 (74) 74.0
 
July 30, 2021, 9 a.m. 20.4 ppb (20) 7.7 ppb (8) 19.0 ppb (18) 12.0 ppb (12) N/A 0.0 ppb (0) 0.0 ppb (0) N/A 36.0 μg/m3 (34) 22.7 μg/m3 (74) 74.0
 
July 30, 2021, 8 a.m. 27.3 ppb (26) 12.3 ppb (12) 27.0 ppb (26) 15.0 ppb (15) N/A 0.0 ppb (0) 0.0 ppb (0) N/A 42.0 μg/m3 (39) 23.4 μg/m3 (75) 75.0
 
July 30, 2021, 7 a.m. 25.1 ppb (24) 8.3 ppb (8) 22.0 ppb (21) 16.0 ppb (16) N/A 0.0 ppb (0) 0.0 ppb (0) 0.55 ppb (7) 40.0 μg/m3 (38) 23.1 μg/m3 (75) 75.0
 
July 30, 2021, 6 a.m. 25.4 ppb (24) 11.5 ppb (11) 22.0 ppb (21) 14.0 ppb (14) N/A 0.0 ppb (0) 0.0 ppb (0) 0.6 ppb (7) 37.0 μg/m3 (35) 21.1 μg/m3 (70) 70.0
 
July 30, 2021, 5 a.m. 31.5 ppb (30) 16.1 ppb (16) 26.0 ppb (25) 15.0 ppb (15) N/A 0.0 ppb (0) 0.0 ppb (0) 0.65 ppb (8) 35.0 μg/m3 (33) 20.2 μg/m3 (69) 69.0
 
July 30, 2021, 4 a.m. 47.4 ppb (45) 29.4 ppb (28) 43.0 ppb (41) 18.0 ppb (17) N/A 0.0 ppb (0) 0.0 ppb (0) 0.71 ppb (8) N/A N/A 45.0
 
July 30, 2021, 3 a.m. 34.9 ppb (33) 12.5 ppb (12) 31.0 ppb (30) 22.0 ppb (21) N/A 0.0 ppb (0) 0.0 ppb (0) 0.64 ppb (7) 35.0 μg/m3 (33) 18.6 μg/m3 (65) 65.0
 
July 30, 2021, 2 a.m. 39.8 ppb (38) 11.4 ppb (11) 38.0 ppb (36) 28.0 ppb (27) N/A 0.0 ppb (0) 0.0 ppb (0) 0.65 ppb (8) 32.0 μg/m3 (30) 18.3 μg/m3 (65) 65.0
 
July 30, 2021, 1 a.m. 24.6 ppb (24) 0.4 ppb (1) 22.0 ppb (21) 24.0 ppb (23) N/A 0.0 ppb (0) 11.0 ppb (11) 0.52 ppb (6) 27.0 μg/m3 (25) 16.8 μg/m3 (61) 61.0
 
July 30, 2021, midnight 16.1 ppb (16) 0.1 ppb (1) 15.0 ppb (15) 16.0 ppb (16) N/A 0.0 ppb (0) 31.0 ppb (29) 0.41 ppb (5) 24.0 μg/m3 (23) 15.8 μg/m3 (59) 59.0
 
July 29, 2021, 11 p.m. 11.0 ppb (11) 0.2 ppb (1) 11.0 ppb (11) 11.0 ppb (11) N/A 0.0 ppb (0) 39.0 ppb (37) 0.37 ppb (5) 24.0 μg/m3 (23) 14.7 μg/m3 (57) 57.0
 
July 29, 2021, 10 p.m. 7.3 ppb (7) 0.9 ppb (1) 7.0 ppb (7) 6.0 ppb (6) N/A 0.0 ppb (0) 48.0 ppb (45) 0.74 ppb (8) 27.0 μg/m3 (25) 16.3 μg/m3 (60) 60.0
 
July 29, 2021, 9 p.m. 4.7 ppb (5) 0.7 ppb (1) 4.0 ppb (4) 4.0 ppb (4) N/A 0.0 ppb (0) 54.0 ppb (50) 0.77 ppb (10) 30.0 μg/m3 (28) 16.4 μg/m3 (61) 61.0
 
July 29, 2021, 8 p.m. 1.7 ppb (2) 0.1 ppb (1) 3.0 ppb (3) 1.0 ppb (1) N/A 0.0 ppb (0) 57.0 ppb (58) 0.32 ppb (4) 22.0 μg/m3 (21) 14.0 μg/m3 (55) 58.0
 
July 29, 2021, 7 p.m. 1.9 ppb (2) 0.0 ppb (0) 3.0 ppb (3) 2.0 ppb (2) N/A 0.0 ppb (0) 68.0 ppb (94) 0.31 ppb (4) 21.0 μg/m3 (20) 14.2 μg/m3 (56) 94.0
 
July 29, 2021, 6 p.m. 2.2 ppb (3) 0.1 ppb (1) 4.0 ppb (4) 2.0 ppb (2) N/A 0.0 ppb (0) 71.0 ppb (101) 0.32 ppb (4) 22.0 μg/m3 (21) 14.9 μg/m3 (57) 101.0
 
July 29, 2021, 5 p.m. 3.9 ppb (4) 0.1 ppb (1) 6.0 ppb (6) 3.0 ppb (3) N/A 0.0 ppb (0) 82.0 ppb (107) 0.34 ppb (4) 23.0 μg/m3 (22) 14.7 μg/m3 (57) 107.0
 
July 29, 2021, 4 p.m. 3.1 ppb (3) 0.1 ppb (1) 6.0 ppb (6) 3.0 ppb (3) N/A 0.0 ppb (0) 78.0 ppb (105) 0.37 ppb (5) 23.0 μg/m3 (22) 14.3 μg/m3 (56) 105.0
 
July 29, 2021, 3 p.m. 8.9 ppb (9) 1.4 ppb (2) 9.0 ppb (9) 7.0 ppb (7) N/A 0.0 ppb (0) 58.0 ppb (61) 0.4 ppb (5) 25.0 μg/m3 (24) 14.6 μg/m3 (57) 61.0
 
July 29, 2021, 2 p.m. 19.9 ppb (19) 3.3 ppb (4) 19.0 ppb (18) 16.0 ppb (16) N/A 0.0 ppb (0) 33.0 ppb (31) 0.52 ppb (6) 25.0 μg/m3 (24) 15.2 μg/m3 (58) 58.0
 
July 29, 2021, 1 p.m. 26.6 ppb (26) 11.9 ppb (12) 23.0 ppb (22) 14.0 ppb (14) N/A 0.0 ppb (0) 10.0 ppb (10) 0.59 ppb (7) 25.0 μg/m3 (24) 15.2 μg/m3 (58) 58.0
 
July 29, 2021, noon 52.4 ppb (50) 43.1 ppb (41) 44.0 ppb (42) 9.0 ppb (9) N/A 0.0 ppb (0) 0.0 ppb (0) 0.81 ppb (10) 31.0 μg/m3 (29) 15.1 μg/m3 (58) 58.0
 
July 29, 2021, 11 a.m. 79.5 ppb (79) 74.6 ppb (73) 74.0 ppb (73) 5.0 ppb (5) N/A 0.0 ppb (0) 0.0 ppb (0) 0.87 ppb (11) 41.0 μg/m3 (38) 16.6 μg/m3 (61) 79.0
 
July 29, 2021, 10 a.m. 44.6 ppb (43) 38.6 ppb (37) 41.0 ppb (39) 6.0 ppb (6) N/A 0.0 ppb (0) 0.0 ppb (0) 0.66 ppb (8) N/A N/A 43.0
 
July 29, 2021, 9 a.m. 34.6 ppb (33) 28.3 ppb (27) 30.0 ppb (29) 6.0 ppb (6) N/A 0.0 ppb (0) 0.0 ppb (0) 0.62 ppb (7) N/A N/A 33.0
 
July 29, 2021, 8 a.m. 38.8 ppb (37) 34.4 ppb (33) 36.0 ppb (34) 4.0 ppb (4) N/A 0.0 ppb (0) 0.0 ppb (0) 0.65 ppb (8) N/A N/A 37.0
 
July 29, 2021, 7 a.m. 43.4 ppb (41) 37.6 ppb (36) 37.0 ppb (35) 6.0 ppb (6) N/A 0.0 ppb (0) 0.0 ppb (0) 0.65 ppb (8) N/A N/A 41.0
 
July 29, 2021, 6 a.m. 43.0 ppb (41) 34.9 ppb (33) 41.0 ppb (39) 8.0 ppb (8) N/A 0.0 ppb (0) 0.0 ppb (0) 0.7 ppb (8) N/A N/A 41.0
 
July 29, 2021, 5 a.m. 40.1 ppb (38) 26.8 ppb (26) 39.0 ppb (37) 13.0 ppb (13) N/A 0.0 ppb (0) 0.0 ppb (0) 0.68 ppb (8) N/A N/A 38.0
 
July 29, 2021, 4 a.m. 30.7 ppb (29) 16.3 ppb (16) 28.0 ppb (27) 14.0 ppb (14) N/A 0.0 ppb (0) 0.0 ppb (0) 0.61 ppb (7) N/A N/A 29.0
 
July 29, 2021, 3 a.m. 31.6 ppb (30) 13.0 ppb (13) 32.0 ppb (31) 18.0 ppb (17) N/A 0.0 ppb (0) 0.0 ppb (0) 0.59 ppb (7) N/A N/A 31.0
 
July 29, 2021, 2 a.m. 36.4 ppb (35) 8.9 ppb (9) 32.0 ppb (31) 27.0 ppb (26) N/A 0.0 ppb (0) 1.0 ppb (1) 0.6 ppb (7) N/A N/A 35.0
 
July 29, 2021, 1 a.m. 10.9 ppb (11) 0.1 ppb (1) 9.0 ppb (9) 11.0 ppb (11) N/A 0.0 ppb (0) 19.0 ppb (18) 0.43 ppb (5) N/A N/A 18.0
 
July 29, 2021, midnight 16.9 ppb (16) 0.1 ppb (1) 16.0 ppb (16) 17.0 ppb (17) N/A 0.0 ppb (0) 20.0 ppb (19) 0.48 ppb (6) N/A N/A 19.0
 
July 28, 2021, 11 p.m. 13.1 ppb (13) 0.3 ppb (1) 12.0 ppb (12) 13.0 ppb (13) N/A 0.0 ppb (0) 31.0 ppb (29) 0.39 ppb (5) N/A N/A 29.0
 
July 28, 2021, 10 p.m. 5.8 ppb (6) 0.3 ppb (1) 6.0 ppb (6) 5.0 ppb (5) N/A 0.0 ppb (0) 40.0 ppb (38) 0.34 ppb (4) N/A N/A 38.0
 
July 28, 2021, 9 p.m. 6.2 ppb (6) 0.4 ppb (1) 6.0 ppb (6) 5.0 ppb (5) N/A 0.0 ppb (0) 47.0 ppb (44) 0.4 ppb (5) N/A N/A 44.0
 
July 28, 2021, 8 p.m. 2.3 ppb (3) 0.1 ppb (1) 3.0 ppb (3) 2.0 ppb (2) N/A 0.0 ppb (0) 63.0 ppb (78) 0.34 ppb (4) N/A N/A 78.0
 
July 28, 2021, 7 p.m. 1.6 ppb (2) 0.1 ppb (1) 3.0 ppb (3) 1.0 ppb (1) N/A 0.0 ppb (0) 66.0 ppb (87) 0.31 ppb (4) N/A N/A 87.0
 
July 28, 2021, 6 p.m. 1.7 ppb (2) 0.1 ppb (1) 3.0 ppb (3) 1.0 ppb (1) N/A 0.0 ppb (0) 64.0 ppb (81) 0.32 ppb (4) N/A N/A 81.0
 
July 28, 2021, 5 p.m. 2.5 ppb (3) 0.2 ppb (1) 4.0 ppb (4) 2.0 ppb (2) N/A 0.0 ppb (0) 63.0 ppb (78) 0.34 ppb (4) N/A N/A 78.0
 
July 28, 2021, 4 p.m. 3.9 ppb (4) 0.4 ppb (1) 6.0 ppb (6) 3.0 ppb (3) N/A 0.0 ppb (0) 57.0 ppb (58) 0.37 ppb (5) N/A N/A 58.0
 
July 28, 2021, 3 p.m. 12.6 ppb (12) 3.0 ppb (3) 12.0 ppb (12) 9.0 ppb (9) N/A 0.0 ppb (0) 31.0 ppb (29) 0.39 ppb (5) N/A N/A 29.0
 
July 28, 2021, 2 p.m. 19.8 ppb (19) 7.1 ppb (7) 18.0 ppb (17) 12.0 ppb (12) N/A 0.0 ppb (0) 13.0 ppb (13) 0.4 ppb (5) 14.0 μg/m3 (13) 8.1 μg/m3 (34) 34.0
 
July 28, 2021, 1 p.m. 13.7 ppb (13) 4.6 ppb (5) 12.0 ppb (12) 9.0 ppb (9) N/A 0.0 ppb (0) 6.0 ppb (6) 0.36 ppb (5) 12.0 μg/m3 (12) 6.9 μg/m3 (29) 29.0
 
July 28, 2021, noon 12.3 ppb (12) 4.1 ppb (4) 11.0 ppb (11) 8.0 ppb (8) N/A 0.0 ppb (0) 3.0 ppb (3) 0.35 ppb (4) 14.0 μg/m3 (13) 6.7 μg/m3 (28) 28.0
 
July 28, 2021, 11 a.m. 32.3 ppb (31) 21.7 ppb (21) 29.0 ppb (28) 10.0 ppb (10) N/A 0.0 ppb (0) 0.0 ppb (0) 0.44 ppb (5) 22.0 μg/m3 (21) 7.9 μg/m3 (33) 33.0
 
July 28, 2021, 10 a.m. 26.3 ppb (25) 12.6 ppb (12) 23.0 ppb (22) 13.0 ppb (13) N/A 0.0 ppb (0) 0.0 ppb (0) 0.39 ppb (5) 20.0 μg/m3 (19) 7.6 μg/m3 (32) 32.0
 
July 28, 2021, 9 a.m. 22.2 ppb (21) 7.2 ppb (7) 20.0 ppb (19) 15.0 ppb (15) N/A 0.0 ppb (0) 0.0 ppb (0) N/A 21.0 μg/m3 (20) 7.1 μg/m3 (30) 30.0
 
July 28, 2021, 8 a.m. 16.6 ppb (16) 1.6 ppb (2) 15.0 ppb (15) 15.0 ppb (15) N/A 0.0 ppb (0) 0.0 ppb (0) N/A 21.0 μg/m3 (20) 6.8 μg/m3 (29) 29.0
 
July 28, 2021, 7 a.m. 11.6 ppb (11) 0.3 ppb (1) 10.0 ppb (10) 11.0 ppb (11) N/A 0.0 ppb (0) 2.0 ppb (2) 0.32 ppb (4) 20.0 μg/m3 (19) 6.4 μg/m3 (27) 27.0
 
July 28, 2021, 6 a.m. 17.8 ppb (17) 3.3 ppb (4) 16.0 ppb (16) 14.0 ppb (14) N/A 0.0 ppb (0) 0.0 ppb (0) 0.43 ppb (5) 25.0 μg/m3 (24) 7.3 μg/m3 (31) 31.0
 
July 28, 2021, 5 a.m. 16.9 ppb (16) 2.0 ppb (2) 15.0 ppb (15) 15.0 ppb (15) N/A 0.0 ppb (0) 0.0 ppb (0) 0.43 ppb (5) 25.0 μg/m3 (24) 7.3 μg/m3 (31) 31.0
 
July 28, 2021, 4 a.m. 15.8 ppb (15) 0.8 ppb (1) 14.0 ppb (14) 15.0 ppb (15) N/A 0.0 ppb (0) 0.0 ppb (0) 0.42 ppb (5) N/A N/A 15.0
 
July 28, 2021, 3 a.m. 17.9 ppb (17) 0.1 ppb (1) 16.0 ppb (16) 17.0 ppb (17) N/A 0.0 ppb (0) 1.0 ppb (1) 0.4 ppb (5) 18.0 μg/m3 (17) 5.9 μg/m3 (25) 25.0
 
July 28, 2021, 2 a.m. 23.3 ppb (22) 0.6 ppb (1) 20.0 ppb (19) 22.0 ppb (21) N/A 0.0 ppb (0) 1.0 ppb (1) 0.41 ppb (5) 19.0 μg/m3 (18) 6.2 μg/m3 (26) 26.0
 
July 28, 2021, 1 a.m. 14.7 ppb (14) -0.1 ppb (0) 14.0 ppb (14) 14.0 ppb (14) N/A 0.0 ppb (0) 11.0 ppb (11) 0.33 ppb (4) 17.0 μg/m3 (16) 6.1 μg/m3 (26) 26.0
 
July 28, 2021, midnight 9.9 ppb (10) 0.0 ppb (0) 8.0 ppb (8) 10.0 ppb (10) N/A 0.0 ppb (0) 26.0 ppb (25) 0.28 ppb (4) 12.0 μg/m3 (12) 5.1 μg/m3 (22) 25.0
 
July 27, 2021, 11 p.m. 10.6 ppb (10) 0.1 ppb (1) 9.0 ppb (9) 10.0 ppb (10) N/A 0.0 ppb (0) 32.0 ppb (30) 0.27 ppb (4) 12.0 μg/m3 (12) 5.0 μg/m3 (21) 30.0
 
July 27, 2021, 10 p.m. 3.7 ppb (4) 0.0 ppb (0) 3.0 ppb (3) 3.0 ppb (3) N/A 0.0 ppb (0) 48.0 ppb (45) 0.25 ppb (3) 14.0 μg/m3 (13) 5.7 μg/m3 (24) 45.0
 
July 27, 2021, 9 p.m. 5.5 ppb (6) 0.2 ppb (1) 6.0 ppb (6) 5.0 ppb (5) N/A 0.0 ppb (0) 49.0 ppb (46) 0.36 ppb (5) 15.0 μg/m3 (14) 9.2 μg/m3 (39) 46.0
 
July 27, 2021, 8 p.m. 1.4 ppb (2) 0.1 ppb (1) 2.0 ppb (2) 1.0 ppb (1) N/A 0.0 ppb (0) 51.0 ppb (48) 0.32 ppb (4) 15.0 μg/m3 (14) 9.0 μg/m3 (38) 48.0
 
July 27, 2021, 7 p.m. 1.5 ppb (2) 0.1 ppb (1) 3.0 ppb (3) 1.0 ppb (1) N/A 0.0 ppb (0) 74.0 ppb (103) 0.33 ppb (4) 14.0 μg/m3 (13) 9.1 μg/m3 (38) 103.0
 
July 27, 2021, 6 p.m. 2.0 ppb (2) 0.1 ppb (1) 4.0 ppb (4) 2.0 ppb (2) N/A 0.0 ppb (0) 76.0 ppb (104) 0.35 ppb (4) 14.0 μg/m3 (13) 9.0 μg/m3 (38) 104.0
 
July 27, 2021, 5 p.m. 2.3 ppb (3) 0.1 ppb (1) 4.0 ppb (4) 2.0 ppb (2) N/A 0.0 ppb (0) 71.0 ppb (101) 0.34 ppb (4) 13.0 μg/m3 (13) 8.9 μg/m3 (38) 101.0
 
July 27, 2021, 4 p.m. 2.4 ppb (3) 0.2 ppb (1) 4.0 ppb (4) 2.0 ppb (2) N/A 0.0 ppb (0) 62.0 ppb (74) 0.34 ppb (4) 12.0 μg/m3 (12) 8.3 μg/m3 (35) 74.0
 
July 27, 2021, 3 p.m. 3.4 ppb (4) 0.4 ppb (1) 4.0 ppb (4) 3.0 ppb (3) N/A 0.0 ppb (0) 50.0 ppb (47) 0.33 ppb (4) 12.0 μg/m3 (12) 7.7 μg/m3 (33) 47.0
 
July 27, 2021, 2 p.m. 6.0 ppb (6) 0.9 ppb (1) 6.0 ppb (6) 5.0 ppb (5) N/A 0.0 ppb (0) 38.0 ppb (36) 0.34 ppb (4) 10.0 μg/m3 (10) 6.9 μg/m3 (29) 36.0
 
July 27, 2021, 1 p.m. 17.3 ppb (17) 5.1 ppb (5) 14.0 ppb (14) 12.0 ppb (12) N/A 0.0 ppb (0) 17.0 ppb (16) 0.42 ppb (5) 12.0 μg/m3 (12) 6.9 μg/m3 (29) 29.0
 
July 27, 2021, noon 27.0 ppb (26) 15.0 ppb (15) 22.0 ppb (21) 12.0 ppb (12) N/A 0.0 ppb (0) 2.0 ppb (2) 0.47 ppb (6) 18.0 μg/m3 (17) 7.5 μg/m3 (32) 32.0
 
July 27, 2021, 11 a.m. 21.5 ppb (21) 13.2 ppb (13) 16.0 ppb (16) 8.0 ppb (8) N/A 0.0 ppb (0) 0.0 ppb (0) 0.43 ppb (5) 26.0 μg/m3 (25) 8.4 μg/m3 (36) 36.0
 
July 27, 2021, 10 a.m. 19.7 ppb (19) 8.8 ppb (9) 14.0 ppb (14) 11.0 ppb (11) N/A N/A 0.0 ppb (0) 0.41 ppb (5) 29.0 μg/m3 (27) 9.1 μg/m3 (38) 38.0
 
July 27, 2021, 9 a.m. 15.1 ppb (15) 3.3 ppb (4) N/A 12.0 ppb (12) N/A N/A 0.0 ppb (0) 0.37 ppb (5) 26.0 μg/m3 (25) 8.9 μg/m3 (38) 38.0
 
July 27, 2021, 8 a.m. 5.0 ppb (5) 0.1 ppb (1) N/A 5.0 ppb (5) N/A N/A 6.0 ppb (6) 0.32 ppb (4) 24.0 μg/m3 (23) 8.6 μg/m3 (36) 36.0
 
July 27, 2021, 7 a.m. 5.7 ppb (6) 0.2 ppb (1) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 6.0 ppb (6) 0.31 ppb (4) 24.0 μg/m3 (23) 8.6 μg/m3 (36) 36.0
 
July 27, 2021, 6 a.m. 8.4 ppb (8) 0.1 ppb (1) 7.0 ppb (7) 8.0 ppb (8) N/A 0.0 ppb (0) 10.0 ppb (10) 0.33 ppb (4) 20.0 μg/m3 (19) 8.1 μg/m3 (34) 34.0
 
July 27, 2021, 5 a.m. 10.7 ppb (11) 0.1 ppb (1) 10.0 ppb (10) 10.0 ppb (10) N/A 0.0 ppb (0) 9.0 ppb (9) 0.33 ppb (4) 19.0 μg/m3 (18) 7.9 μg/m3 (33) 33.0
 
July 27, 2021, 4 a.m. 3.2 ppb (4) 0.0 ppb (0) 2.0 ppb (2) 3.0 ppb (3) N/A 0.0 ppb (0) 20.0 ppb (19) 0.29 ppb (4) N/A N/A 19.0
 
July 27, 2021, 3 a.m. 2.0 ppb (2) 0.1 ppb (1) 1.0 ppb (1) 2.0 ppb (2) N/A 0.0 ppb (0) 29.0 ppb (27) 0.28 ppb (4) 17.0 μg/m3 (16) 6.9 μg/m3 (29) 29.0
 
July 27, 2021, 2 a.m. 3.8 ppb (4) 0.0 ppb (0) 2.0 ppb (2) 3.0 ppb (3) N/A 0.0 ppb (0) 29.0 ppb (27) 0.3 ppb (4) 14.0 μg/m3 (13) 7.5 μg/m3 (32) 32.0
 
July 27, 2021, 1 a.m. 9.1 ppb (9) 0.0 ppb (0) 7.0 ppb (7) 9.0 ppb (9) N/A 0.0 ppb (0) 25.0 ppb (24) 0.35 ppb (4) 15.0 μg/m3 (14) 8.6 μg/m3 (36) 36.0
 
July 27, 2021, midnight 6.9 ppb (7) 0.2 ppb (1) 6.0 ppb (6) 6.0 ppb (6) N/A 0.0 ppb (0) 30.0 ppb (28) 0.31 ppb (4) 21.0 μg/m3 (20) 10.0 μg/m3 (42) 42.0
 
July 26, 2021, 11 p.m. 5.3 ppb (5) 0.2 ppb (1) 5.0 ppb (5) 5.0 ppb (5) N/A 0.0 ppb (0) 42.0 ppb (39) 0.33 ppb (4) 16.0 μg/m3 (15) 10.2 μg/m3 (43) 43.0
 
July 26, 2021, 10 p.m. 8.1 ppb (8) 0.3 ppb (1) 8.0 ppb (8) 8.0 ppb (8) N/A 0.0 ppb (0) 42.0 ppb (39) 0.41 ppb (5) 17.0 μg/m3 (16) 12.1 μg/m3 (51) 51.0
 
July 26, 2021, 9 p.m. 4.7 ppb (5) 0.2 ppb (1) 5.0 ppb (5) 4.0 ppb (4) N/A 0.0 ppb (0) 52.0 ppb (49) 0.36 ppb (5) 17.0 μg/m3 (16) 12.2 μg/m3 (52) 52.0
 
July 26, 2021, 8 p.m. 2.4 ppb (3) 0.1 ppb (1) 4.0 ppb (4) 2.0 ppb (2) N/A 0.0 ppb (0) 59.0 ppb (65) 0.33 ppb (4) 17.0 μg/m3 (16) 12.3 μg/m3 (52) 65.0
 
July 26, 2021, 7 p.m. 1.3 ppb (2) 0.1 ppb (1) 2.0 ppb (2) 1.0 ppb (1) N/A 0.0 ppb (0) 58.0 ppb (61) 0.31 ppb (4) 17.0 μg/m3 (16) 11.9 μg/m3 (50) 61.0
 
July 26, 2021, 6 p.m. N/A N/A 3.0 ppb (3) N/A N/A 0.0 ppb (0) 59.0 ppb (65) 0.32 ppb (4) 17.0 μg/m3 (16) 12.2 μg/m3 (52) 65.0
 
July 26, 2021, 5 p.m. N/A N/A 4.0 ppb (4) N/A N/A 0.0 ppb (0) 65.0 ppb (84) 0.33 ppb (4) 18.0 μg/m3 (17) 12.6 μg/m3 (53) 84.0
 
July 26, 2021, 4 p.m. N/A N/A 5.0 ppb (5) N/A N/A 0.0 ppb (0) 58.0 ppb (61) 0.34 ppb (4) 17.0 μg/m3 (16) 12.4 μg/m3 (52) 61.0
 
July 26, 2021, 3 p.m. N/A N/A 5.0 ppb (5) N/A N/A 0.0 ppb (0) 48.0 ppb (45) 0.33 ppb (4) 16.0 μg/m3 (15) 11.4 μg/m3 (48) 48.0
 
July 26, 2021, 2 p.m. N/A N/A 7.0 ppb (7) N/A N/A 0.0 ppb (0) 35.0 ppb (33) 0.37 ppb (5) 17.0 μg/m3 (16) 11.6 μg/m3 (49) 49.0
 
July 26, 2021, 1 p.m. N/A N/A 10.0 ppb (10) N/A N/A 0.0 ppb (0) 21.0 ppb (20) 0.41 ppb (5) 16.0 μg/m3 (15) 11.1 μg/m3 (47) 47.0
 
July 26, 2021, noon 24.8 ppb (24) 9.9 ppb (10) 21.0 ppb (20) 15.0 ppb (15) N/A 0.0 ppb (0) 5.0 ppb (5) 0.52 ppb (6) 18.0 μg/m3 (17) 11.3 μg/m3 (48) 48.0
 
July 26, 2021, 11 a.m. 33.7 ppb (32) 26.5 ppb (25) 31.0 ppb (30) 7.0 ppb (7) N/A 0.0 ppb (0) 0.0 ppb (0) 0.6 ppb (7) 22.0 μg/m3 (21) 12.0 μg/m3 (50) 50.0
 
July 26, 2021, 10 a.m. 32.5 ppb (31) 24.8 ppb (24) 31.0 ppb (30) 7.0 ppb (7) N/A 0.0 ppb (0) 0.0 ppb (0) 0.56 ppb (7) 25.0 μg/m3 (24) 12.4 μg/m3 (52) 52.0
 
July 26, 2021, 9 a.m. 29.2 ppb (28) 20.4 ppb (20) 24.0 ppb (23) 9.0 ppb (9) N/A 0.0 ppb (0) N/A 0.54 ppb (6) 24.0 μg/m3 (23) 12.2 μg/m3 (52) 52.0
 
July 26, 2021, 8 a.m. 26.7 ppb (26) 18.9 ppb (18) 28.0 ppb (27) 8.0 ppb (8) N/A 0.0 ppb (0) N/A 0.55 ppb (7) 25.0 μg/m3 (24) 12.0 μg/m3 (50) 50.0
 
July 26, 2021, 7 a.m. 15.0 ppb (15) 6.7 ppb (7) 16.0 ppb (16) 8.0 ppb (8) N/A 0.0 ppb (0) 0.0 ppb (0) 0.49 ppb (6) 25.0 μg/m3 (24) 12.4 μg/m3 (52) 52.0
 
July 26, 2021, 6 a.m. 9.7 ppb (10) 0.6 ppb (1) 9.0 ppb (9) 9.0 ppb (9) N/A 0.0 ppb (0) 0.0 ppb (0) 0.45 ppb (6) 27.0 μg/m3 (25) 12.9 μg/m3 (53) 53.0
 
July 26, 2021, 5 a.m. 15.4 ppb (15) 0.5 ppb (1) 14.0 ppb (14) 15.0 ppb (15) N/A 0.0 ppb (0) 1.0 ppb (1) 0.46 ppb (6) 25.0 μg/m3 (24) 11.4 μg/m3 (48) 48.0
 
July 26, 2021, 4 a.m. 20.1 ppb (19) 0.8 ppb (1) 18.0 ppb (17) 19.0 ppb (18) N/A 0.0 ppb (0) 1.0 ppb (1) 0.47 ppb (6) 21.0 μg/m3 (20) 11.1 μg/m3 (47) 47.0
 
July 26, 2021, 3 a.m. 20.1 ppb (19) 0.4 ppb (1) 19.0 ppb (18) 19.0 ppb (18) N/A 0.0 ppb (0) 7.0 ppb (7) 0.49 ppb (6) 19.0 μg/m3 (18) 10.9 μg/m3 (46) 46.0
 
July 26, 2021, 2 a.m. 9.6 ppb (10) 0.0 ppb (0) 9.0 ppb (9) 9.0 ppb (9) N/A 0.0 ppb (0) 18.0 ppb (17) 0.41 ppb (5) 20.0 μg/m3 (19) 11.8 μg/m3 (50) 50.0
 
July 26, 2021, 1 a.m. 9.2 ppb (9) 0.1 ppb (1) 8.0 ppb (8) 9.0 ppb (9) N/A 0.0 ppb (0) 20.0 ppb (19) 0.46 ppb (6) 22.0 μg/m3 (21) 13.6 μg/m3 (55) 55.0
 
July 26, 2021, midnight 6.8 ppb (7) 0.1 ppb (1) 6.0 ppb (6) 6.0 ppb (6) N/A 0.0 ppb (0) 22.0 ppb (21) 0.45 ppb (6) 21.0 μg/m3 (20) 13.7 μg/m3 (55) 55.0
 
July 25, 2021, 11 p.m. 2.0 ppb (2) 0.1 ppb (1) 2.0 ppb (2) 2.0 ppb (2) N/A 0.0 ppb (0) 30.0 ppb (28) 0.33 ppb (4) 19.0 μg/m3 (18) 13.9 μg/m3 (55) 55.0
 
July 25, 2021, 10 p.m. 2.6 ppb (3) 0.4 ppb (1) 2.0 ppb (2) 2.0 ppb (2) N/A 0.0 ppb (0) 38.0 ppb (36) 0.72 ppb (8) 29.0 μg/m3 (27) 17.1 μg/m3 (62) 62.0
 
July 25, 2021, 9 p.m. 2.4 ppb (3) 0.5 ppb (1) 2.0 ppb (2) 2.0 ppb (2) N/A 0.0 ppb (0) 47.0 ppb (44) 0.47 ppb (6) 21.0 μg/m3 (20) 15.3 μg/m3 (58) 58.0
 
July 25, 2021, 8 p.m. 1.6 ppb (2) 0.1 ppb (1) 2.0 ppb (2) 1.0 ppb (1) N/A 0.0 ppb (0) 54.0 ppb (50) 0.33 ppb (4) 20.0 μg/m3 (19) 14.7 μg/m3 (57) 57.0
 
July 25, 2021, 7 p.m. 1.2 ppb (2) 0.1 ppb (1) 2.0 ppb (2) 1.0 ppb (1) N/A 0.0 ppb (0) 51.0 ppb (48) 0.33 ppb (4) 20.0 μg/m3 (19) 14.8 μg/m3 (57) 57.0
 
July 25, 2021, 6 p.m. 0.8 ppb (1) 0.1 ppb (1) 1.0 ppb (1) 1.0 ppb (1) N/A 0.0 ppb (0) 44.0 ppb (41) 0.32 ppb (4) 19.0 μg/m3 (18) 14.8 μg/m3 (57) 57.0
 
July 25, 2021, 5 p.m. 0.9 ppb (1) 0.1 ppb (1) 1.0 ppb (1) 1.0 ppb (1) N/A 0.0 ppb (0) 41.0 ppb (38) 0.32 ppb (4) 20.0 μg/m3 (19) 14.7 μg/m3 (57) 57.0
 
July 25, 2021, 4 p.m. 0.6 ppb (1) 0.1 ppb (1) 1.0 ppb (1) 0.0 ppb (0) N/A 0.0 ppb (0) 35.0 ppb (33) 0.31 ppb (4) 19.0 μg/m3 (18) 14.6 μg/m3 (57) 57.0
 
July 25, 2021, 3 p.m. 0.9 ppb (1) 0.2 ppb (1) 1.0 ppb (1) 0.0 ppb (0) N/A 0.0 ppb (0) 34.0 ppb (32) 0.32 ppb (4) 22.0 μg/m3 (21) 16.0 μg/m3 (60) 60.0
 
July 25, 2021, 2 p.m. 6.6 ppb (7) 1.1 ppb (2) 6.0 ppb (6) 5.0 ppb (5) N/A 1.0 ppb (2) 33.0 ppb (31) 0.36 ppb (5) 23.0 μg/m3 (22) 17.4 μg/m3 (63) 63.0
 
July 25, 2021, 1 p.m. 6.7 ppb (7) 1.2 ppb (2) 6.0 ppb (6) 5.0 ppb (5) N/A 0.0 ppb (0) 24.0 ppb (23) 0.37 ppb (5) 23.0 μg/m3 (22) 17.2 μg/m3 (62) 62.0
 
July 25, 2021, noon 4.3 ppb (5) 0.8 ppb (1) 4.0 ppb (4) 3.0 ppb (3) N/A 0.0 ppb (0) 11.0 ppb (11) 0.37 ppb (5) 24.0 μg/m3 (23) 17.2 μg/m3 (62) 62.0
 
July 25, 2021, 11 a.m. 2.8 ppb (3) 0.7 ppb (1) 2.0 ppb (2) 2.0 ppb (2) N/A 0.0 ppb (0) 1.0 ppb (1) 0.39 ppb (5) 29.0 μg/m3 (27) 17.3 μg/m3 (62) 62.0
 
July 25, 2021, 10 a.m. 2.5 ppb (3) 0.2 ppb (1) 2.0 ppb (2) 2.0 ppb (2) N/A 0.0 ppb (0) 2.0 ppb (2) 0.37 ppb (5) 26.0 μg/m3 (25) 17.5 μg/m3 (63) 63.0
 
July 25, 2021, 9 a.m. 3.6 ppb (4) 0.4 ppb (1) 3.0 ppb (3) 3.0 ppb (3) N/A 0.0 ppb (0) 1.0 ppb (1) 0.39 ppb (5) 32.0 μg/m3 (30) 18.0 μg/m3 (64) 64.0
 
July 25, 2021, 8 a.m. 5.4 ppb (6) 0.3 ppb (1) 5.0 ppb (5) 5.0 ppb (5) N/A 0.0 ppb (0) 1.0 ppb (1) 0.42 ppb (5) 31.0 μg/m3 (29) 18.2 μg/m3 (64) 64.0
 
July 25, 2021, 7 a.m. 5.9 ppb (6) 0.2 ppb (1) 5.0 ppb (5) 5.0 ppb (5) N/A 0.0 ppb (0) 5.0 ppb (5) 0.42 ppb (5) 32.0 μg/m3 (30) 18.7 μg/m3 (65) 65.0
 
July 25, 2021, 6 a.m. 3.1 ppb (3) 0.1 ppb (1) 3.0 ppb (3) 3.0 ppb (3) N/A 0.0 ppb (0) 11.0 ppb (11) 0.35 ppb (4) 30.0 μg/m3 (28) 18.5 μg/m3 (65) 65.0
 
July 25, 2021, 5 a.m. 2.6 ppb (3) 0.1 ppb (1) 2.0 ppb (2) 2.0 ppb (2) N/A 0.0 ppb (0) 25.0 ppb (24) 0.33 ppb (4) 28.0 μg/m3 (26) 18.2 μg/m3 (64) 64.0
 
July 25, 2021, 4 a.m. 2.6 ppb (3) 0.0 ppb (0) 2.0 ppb (2) 2.0 ppb (2) N/A 0.0 ppb (0) 29.0 ppb (27) 0.34 ppb (4) 25.0 μg/m3 (24) 18.2 μg/m3 (64) 64.0
 
July 25, 2021, 3 a.m. 2.9 ppb (3) 0.1 ppb (1) 2.0 ppb (2) 3.0 ppb (3) N/A 0.0 ppb (0) 27.0 ppb (25) 0.34 ppb (4) 26.0 μg/m3 (25) 18.3 μg/m3 (65) 65.0
 
July 25, 2021, 2 a.m. 4.0 ppb (4) 0.0 ppb (0) 3.0 ppb (3) 4.0 ppb (4) N/A 0.0 ppb (0) 26.0 ppb (25) 0.36 ppb (5) 25.0 μg/m3 (24) 18.4 μg/m3 (65) 65.0
 
July 25, 2021, 1 a.m. 3.4 ppb (4) 0.0 ppb (0) 3.0 ppb (3) 3.0 ppb (3) N/A 0.0 ppb (0) 28.0 ppb (26) 0.38 ppb (5) 24.0 μg/m3 (23) 18.6 μg/m3 (65) 65.0
 
July 25, 2021, midnight 2.0 ppb (2) 0.1 ppb (1) 2.0 ppb (2) 2.0 ppb (2) N/A 0.0 ppb (0) 30.0 ppb (28) 0.36 ppb (5) 25.0 μg/m3 (24) 18.4 μg/m3 (65) 65.0
 
July 24, 2021, 11 p.m. 1.3 ppb (2) 0.1 ppb (1) 1.0 ppb (1) 1.0 ppb (1) N/A 0.0 ppb (0) 31.0 ppb (29) 0.34 ppb (4) 24.0 μg/m3 (23) 17.9 μg/m3 (64) 64.0
 
July 24, 2021, 10 p.m. 1.2 ppb (2) 0.1 ppb (1) 1.0 ppb (1) 1.0 ppb (1) N/A 0.0 ppb (0) 33.0 ppb (31) 0.32 ppb (4) 23.0 μg/m3 (22) 17.1 μg/m3 (62) 62.0
 
July 24, 2021, 9 p.m. 0.9 ppb (1) 0.0 ppb (0) 1.0 ppb (1) 1.0 ppb (1) N/A 0.0 ppb (0) 39.0 ppb (37) 0.31 ppb (4) 23.0 μg/m3 (22) 16.9 μg/m3 (62) 62.0
 
July 24, 2021, 8 p.m. 0.9 ppb (1) 0.1 ppb (1) 1.0 ppb (1) 1.0 ppb (1) N/A 0.0 ppb (0) 46.0 ppb (43) 0.31 ppb (4) 23.0 μg/m3 (22) 17.1 μg/m3 (62) 62.0
 
July 24, 2021, 7 p.m. 1.1 ppb (2) 0.1 ppb (1) 1.0 ppb (1) 1.0 ppb (1) N/A 0.0 ppb (0) 51.0 ppb (48) 0.31 ppb (4) 23.0 μg/m3 (22) 17.7 μg/m3 (63) 63.0
 
July 24, 2021, 6 p.m. 1.0 ppb (1) 0.1 ppb (1) 2.0 ppb (2) 1.0 ppb (1) N/A 0.0 ppb (0) 52.0 ppb (49) 0.31 ppb (4) 23.0 μg/m3 (22) 17.0 μg/m3 (62) 62.0
 
July 24, 2021, 5 p.m. 1.5 ppb (2) 0.1 ppb (1) 2.0 ppb (2) 1.0 ppb (1) N/A 0.0 ppb (0) 52.0 ppb (49) 0.31 ppb (4) 22.0 μg/m3 (21) 16.2 μg/m3 (60) 60.0
 
July 24, 2021, 4 p.m. 1.3 ppb (2) 0.2 ppb (1) 2.0 ppb (2) 1.0 ppb (1) N/A 0.0 ppb (0) 50.0 ppb (47) 0.31 ppb (4) 21.0 μg/m3 (20) 15.9 μg/m3 (59) 59.0
 
July 24, 2021, 3 p.m. 2.2 ppb (3) 0.2 ppb (1) 3.0 ppb (3) 2.0 ppb (2) N/A 0.0 ppb (0) 47.0 ppb (44) 0.32 ppb (4) 20.0 μg/m3 (19) 14.8 μg/m3 (57) 57.0
 
July 24, 2021, 2 p.m. 2.7 ppb (3) 0.7 ppb (1) 3.0 ppb (3) 2.0 ppb (2) N/A 0.0 ppb (0) 29.0 ppb (27) 0.34 ppb (4) 18.0 μg/m3 (17) 12.5 μg/m3 (52) 52.0
 
July 24, 2021, 1 p.m. 2.9 ppb (3) 0.5 ppb (1) 2.0 ppb (2) 2.0 ppb (2) N/A 0.0 ppb (0) 15.0 ppb (14) 0.37 ppb (5) 15.0 μg/m3 (14) 10.6 μg/m3 (45) 45.0
 
July 24, 2021, noon 10.9 ppb (11) 5.6 ppb (6) 9.0 ppb (9) 5.0 ppb (5) N/A 0.0 ppb (0) 2.0 ppb (2) 0.56 ppb (7) 16.0 μg/m3 (15) 9.7 μg/m3 (41) 41.0
 
July 24, 2021, 11 a.m. 19.9 ppb (19) 16.4 ppb (16) 17.0 ppb (17) 3.0 ppb (3) N/A 0.0 ppb (0) 0.0 ppb (0) 0.74 ppb (8) 25.0 μg/m3 (24) 10.4 μg/m3 (44) 44.0
 
July 24, 2021, 10 a.m. 24.1 ppb (23) 20.0 ppb (19) 21.0 ppb (20) 4.0 ppb (4) N/A 0.0 ppb (0) 0.0 ppb (0) 0.79 ppb (10) 32.0 μg/m3 (30) 10.8 μg/m3 (46) 46.0
 
July 24, 2021, 9 a.m. 27.3 ppb (26) 23.6 ppb (23) 25.0 ppb (24) 3.0 ppb (3) N/A 0.0 ppb (0) 0.0 ppb (0) 0.82 ppb (10) 35.0 μg/m3 (33) 11.4 μg/m3 (48) 48.0
 
July 24, 2021, 8 a.m. 25.6 ppb (25) 21.5 ppb (21) 22.0 ppb (21) 4.0 ppb (4) N/A 0.0 ppb (0) 0.0 ppb (0) 0.77 ppb (10) 36.0 μg/m3 (34) 11.2 μg/m3 (47) 47.0
 
July 24, 2021, 7 a.m. 28.1 ppb (27) 23.2 ppb (22) 26.0 ppb (25) 5.0 ppb (5) N/A 0.0 ppb (0) 0.0 ppb (0) 0.8 ppb (10) 35.0 μg/m3 (33) 11.5 μg/m3 (48) 48.0
 
July 24, 2021, 6 a.m. 27.4 ppb (26) 21.4 ppb (21) 26.0 ppb (25) 6.0 ppb (6) N/A 0.0 ppb (0) 0.0 ppb (0) 0.79 ppb (10) 36.0 μg/m3 (34) 12.0 μg/m3 (50) 50.0
 
July 24, 2021, 5 a.m. 22.4 ppb (22) 14.8 ppb (14) 23.0 ppb (22) 7.0 ppb (7) N/A 0.0 ppb (0) 0.0 ppb (0) 0.7 ppb (8) 37.0 μg/m3 (35) 11.8 μg/m3 (50) 50.0
 
July 24, 2021, 4 a.m. 21.9 ppb (21) 12.6 ppb (12) 21.0 ppb (20) 9.0 ppb (9) N/A 0.0 ppb (0) 0.0 ppb (0) 0.7 ppb (8) N/A N/A 21.0
 
July 24, 2021, 3 a.m. 20.6 ppb (20) 7.6 ppb (8) 21.0 ppb (20) 13.0 ppb (13) N/A 0.0 ppb (0) 0.0 ppb (0) 0.64 ppb (7) 28.0 μg/m3 (26) 11.3 μg/m3 (48) 48.0
 
July 24, 2021, 2 a.m. 19.9 ppb (19) 3.7 ppb (4) 19.0 ppb (18) 16.0 ppb (16) N/A 0.0 ppb (0) 0.0 ppb (0) 0.59 ppb (7) 26.0 μg/m3 (25) 10.9 μg/m3 (46) 46.0
 
July 24, 2021, 1 a.m. 15.0 ppb (15) 0.6 ppb (1) 15.0 ppb (15) 14.0 ppb (14) N/A 0.0 ppb (0) 4.0 ppb (4) 0.49 ppb (6) 23.0 μg/m3 (22) 11.0 μg/m3 (46) 46.0
 
July 24, 2021, midnight 12.2 ppb (12) 0.1 ppb (1) 10.0 ppb (10) 12.0 ppb (12) N/A 0.0 ppb (0) 14.0 ppb (13) 0.42 ppb (5) 17.0 μg/m3 (16) 10.1 μg/m3 (43) 43.0
 
July 23, 2021, 11 p.m. 12.2 ppb (12) 0.4 ppb (1) 11.0 ppb (11) 11.0 ppb (11) N/A 0.0 ppb (0) 24.0 ppb (23) 0.39 ppb (5) 16.0 μg/m3 (15) 9.9 μg/m3 (42) 42.0
 
July 23, 2021, 10 p.m. 7.8 ppb (8) 0.1 ppb (1) 7.0 ppb (7) 7.0 ppb (7) N/A 0.0 ppb (0) 34.0 ppb (32) 0.34 ppb (4) 22.0 μg/m3 (21) 9.9 μg/m3 (42) 42.0
 
July 23, 2021, 9 p.m. 3.0 ppb (3) 0.1 ppb (1) 3.0 ppb (3) 3.0 ppb (3) N/A 0.0 ppb (0) 35.0 ppb (33) 0.31 ppb (4) 15.0 μg/m3 (14) 9.3 μg/m3 (39) 39.0
 
July 23, 2021, 8 p.m. 1.0 ppb (1) 0.1 ppb (1) 1.0 ppb (1) 1.0 ppb (1) N/A 0.0 ppb (0) 48.0 ppb (45) 0.3 ppb (4) 16.0 μg/m3 (15) 9.9 μg/m3 (42) 45.0