ID: 318

AQSQID: 130890002

Site Name: South Dekalb

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

Updated: Jan. 27, 2021, 1:31 p.m.

Location: Decatur (Clifton Spgs Rd), GA

Reporting: True, Located: True

Current AQI: 17.0

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
Jan. 27, 2021, noon 11.9 ppb (12) -0.3 ppb (0) 13.0 ppb (13) 12.0 ppb (12) N/A 0.0 ppb (0) 18.0 ppb (17) 0.23 ppb (3) N/A N/A 17.0
 
Jan. 27, 2021, 11 a.m. 11.2 ppb (11) -0.3 ppb (0) 12.0 ppb (12) 12.0 ppb (12) N/A 0.0 ppb (0) 18.0 ppb (17) 0.23 ppb (3) N/A N/A 17.0
 
Jan. 27, 2021, 10 a.m. 13.3 ppb (13) -0.2 ppb (0) 14.0 ppb (14) 14.0 ppb (14) N/A 0.0 ppb (0) 13.0 ppb (13) 0.27 ppb (4) N/A N/A 14.0
 
Jan. 27, 2021, 9 a.m. 28.1 ppb (27) 10.2 ppb (10) 29.0 ppb (28) 18.0 ppb (17) N/A 0.0 ppb (0) 3.0 ppb (3) 0.37 ppb (5) N/A N/A 28.0
 
Jan. 27, 2021, 8 a.m. 34.4 ppb (33) 17.6 ppb (17) 35.0 ppb (34) 17.0 ppb (17) N/A 0.0 ppb (0) 0.0 ppb (0) 0.44 ppb (5) N/A N/A 34.0
 
Jan. 27, 2021, 7 a.m. 42.6 ppb (41) 26.0 ppb (25) 43.0 ppb (41) 17.0 ppb (17) N/A 0.0 ppb (0) 0.0 ppb (0) 0.48 ppb (6) N/A N/A 41.0
 
Jan. 27, 2021, 6 a.m. 60.6 ppb (59) 50.8 ppb (48) 59.0 ppb (57) 10.0 ppb (10) N/A 0.0 ppb (0) 0.0 ppb (0) 0.64 ppb (7) N/A N/A 59.0
 
Jan. 27, 2021, 5 a.m. 79.5 ppb (79) 67.7 ppb (66) 85.0 ppb (85) 12.0 ppb (12) N/A 0.0 ppb (0) 0.0 ppb (0) 0.72 ppb (8) N/A N/A 85.0
 
Jan. 27, 2021, 4 a.m. 70.3 ppb (69) 58.5 ppb (56) 84.0 ppb (83) 12.0 ppb (12) N/A 0.0 ppb (0) 0.0 ppb (0) 0.68 ppb (8) N/A N/A 83.0
 
Jan. 27, 2021, 3 a.m. 61.7 ppb (60) 47.5 ppb (45) 63.0 ppb (61) 14.0 ppb (14) N/A 0.0 ppb (0) 0.0 ppb (0) 0.6 ppb (7) N/A N/A 61.0
 
Jan. 27, 2021, 2 a.m. 81.5 ppb (81) 62.4 ppb (60) 90.0 ppb (90) 19.0 ppb (18) N/A 0.0 ppb (0) 0.0 ppb (0) 0.67 ppb (8) N/A N/A 90.0
 
Jan. 27, 2021, 1 a.m. 71.7 ppb (70) 44.9 ppb (43) 79.0 ppb (78) 27.0 ppb (26) N/A 0.0 ppb (0) 0.0 ppb (0) 0.6 ppb (7) N/A N/A 78.0
 
Jan. 27, 2021, midnight 47.1 ppb (45) 19.4 ppb (19) 54.0 ppb (51) 28.0 ppb (27) N/A 0.0 ppb (0) 1.0 ppb (1) 0.45 ppb (6) N/A N/A 51.0
 
Jan. 26, 2021, 11 p.m. 20.4 ppb (20) -0.2 ppb (0) 21.0 ppb (20) 21.0 ppb (20) N/A 0.0 ppb (0) 11.0 ppb (11) 0.28 ppb (4) N/A N/A 20.0
 
Jan. 26, 2021, 10 p.m. 14.0 ppb (14) 0.1 ppb (1) 14.0 ppb (14) 14.0 ppb (14) N/A 0.0 ppb (0) 20.0 ppb (19) 0.23 ppb (3) N/A N/A 19.0
 
Jan. 26, 2021, 9 p.m. 12.0 ppb (12) 0.5 ppb (1) 12.0 ppb (12) 12.0 ppb (12) N/A 0.0 ppb (0) 22.0 ppb (21) 0.21 ppb (3) N/A N/A 21.0
 
Jan. 26, 2021, 8 p.m. 7.4 ppb (7) 0.2 ppb (1) 6.0 ppb (6) 7.0 ppb (7) N/A 0.0 ppb (0) 28.0 ppb (26) 0.18 ppb (3) N/A N/A 26.0
 
Jan. 26, 2021, 7 p.m. 6.4 ppb (7) 0.3 ppb (1) 5.0 ppb (5) 6.0 ppb (6) N/A 0.0 ppb (0) 29.0 ppb (27) 0.18 ppb (3) N/A N/A 27.0
 
Jan. 26, 2021, 6 p.m. 7.6 ppb (8) 0.4 ppb (1) 7.0 ppb (7) 7.0 ppb (7) N/A 0.0 ppb (0) 25.0 ppb (24) 0.18 ppb (3) N/A N/A 24.0
 
Jan. 26, 2021, 5 p.m. 5.1 ppb (5) 0.9 ppb (1) 5.0 ppb (5) 4.0 ppb (4) N/A 0.0 ppb (0) 27.0 ppb (25) 0.17 ppb (3) N/A N/A 25.0
 
Jan. 26, 2021, 4 p.m. 6.1 ppb (6) 1.4 ppb (2) 6.0 ppb (6) 5.0 ppb (5) N/A 0.0 ppb (0) 24.0 ppb (23) 0.17 ppb (3) N/A N/A 23.0
 
Jan. 26, 2021, 3 p.m. 9.2 ppb (9) 1.6 ppb (2) 9.0 ppb (9) 8.0 ppb (8) N/A 0.0 ppb (0) 20.0 ppb (19) 0.18 ppb (3) N/A N/A 19.0
 
Jan. 26, 2021, 2 p.m. 33.5 ppb (32) 11.8 ppb (12) 34.0 ppb (33) 22.0 ppb (21) N/A 0.0 ppb (0) 7.0 ppb (7) 0.29 ppb (4) N/A N/A 33.0
 
Jan. 26, 2021, 1 p.m. 17.3 ppb (17) 3.6 ppb (4) 22.0 ppb (21) 14.0 ppb (14) N/A 0.0 ppb (0) 8.0 ppb (8) 0.22 ppb (3) N/A N/A 21.0
 
Jan. 26, 2021, noon 8.4 ppb (8) -0.3 ppb (0) 9.0 ppb (9) 9.0 ppb (9) N/A 0.0 ppb (0) 15.0 ppb (14) 0.17 ppb (3) N/A N/A 14.0
 
Jan. 26, 2021, 11 a.m. 5.0 ppb (5) -0.4 ppb (0) 5.0 ppb (5) 5.0 ppb (5) N/A 0.0 ppb (0) 16.0 ppb (15) 0.15 ppb (2) N/A N/A 15.0
 
Jan. 26, 2021, 10 a.m. 4.8 ppb (5) 0.0 ppb (0) 5.0 ppb (5) 5.0 ppb (5) N/A 0.0 ppb (0) 17.0 ppb (16) 0.15 ppb (2) N/A N/A 16.0
 
Jan. 26, 2021, 9 a.m. 2.0 ppb (2) -0.4 ppb (0) 2.0 ppb (2) 3.0 ppb (3) N/A 0.0 ppb (0) 16.0 ppb (15) 0.15 ppb (2) N/A N/A 15.0
 
Jan. 26, 2021, 8 a.m. 0.3 ppb (1) -0.4 ppb (0) 0.0 ppb (0) 1.0 ppb (1) N/A 0.0 ppb (0) 21.0 ppb (20) 0.14 ppb (2) 14.3 μg/m3 (14) 9.5 μg/m3 (40) 40.0
 
Jan. 26, 2021, 7 a.m. 1.1 ppb (2) -0.4 ppb (0) 1.0 ppb (1) 2.0 ppb (2) N/A 0.0 ppb (0) 20.0 ppb (19) 0.15 ppb (2) 16.3 μg/m3 (16) 10.6 μg/m3 (45) 45.0
 
Jan. 26, 2021, 6 a.m. 0.9 ppb (1) -0.4 ppb (0) 1.0 ppb (1) 1.0 ppb (1) N/A 0.0 ppb (0) 22.0 ppb (21) 0.15 ppb (2) 15.3 μg/m3 (15) 10.5 μg/m3 (44) 44.0
 
Jan. 26, 2021, 5 a.m. 0.8 ppb (1) -0.4 ppb (0) 1.0 ppb (1) 1.0 ppb (1) N/A 0.0 ppb (0) 24.0 ppb (23) 0.15 ppb (2) 15.5 μg/m3 (15) 9.8 μg/m3 (41) 41.0
 
Jan. 26, 2021, 4 a.m. 0.8 ppb (1) -0.4 ppb (0) 1.0 ppb (1) 1.0 ppb (1) N/A 0.0 ppb (0) 25.0 ppb (24) 0.16 ppb (3) 13.0 μg/m3 (13) 8.1 μg/m3 (34) 34.0
 
Jan. 26, 2021, 3 a.m. 2.6 ppb (3) -0.2 ppb (0) 2.0 ppb (2) 3.0 ppb (3) N/A 0.0 ppb (0) 23.0 ppb (22) 0.18 ppb (3) 13.3 μg/m3 (13) 7.6 μg/m3 (32) 32.0
 
Jan. 26, 2021, 2 a.m. 19.1 ppb (19) 8.4 ppb (8) 10.0 ppb (10) 11.0 ppb (11) N/A N/A 6.0 ppb (6) 0.34 ppb (4) 22.5 μg/m3 (21) 14.4 μg/m3 (56) 56.0
 
Jan. 26, 2021, 1 a.m. 6.2 ppb (6) -0.3 ppb (0) 6.0 ppb (6) 7.0 ppb (7) N/A N/A 9.0 ppb (9) 0.28 ppb (4) 26.6 μg/m3 (25) 16.4 μg/m3 (61) 61.0
 
Jan. 26, 2021, midnight 8.6 ppb (9) -0.2 ppb (0) 9.0 ppb (9) 9.0 ppb (9) N/A N/A 8.0 ppb (8) 0.3 ppb (4) 26.2 μg/m3 (25) 15.2 μg/m3 (58) 58.0
 
Jan. 25, 2021, 11 p.m. 12.0 ppb (12) 0.1 ppb (1) 13.0 ppb (13) 12.0 ppb (12) N/A 0.0 ppb (0) 5.0 ppb (5) 0.36 ppb (5) 22.3 μg/m3 (21) 12.9 μg/m3 (53) 53.0
 
Jan. 25, 2021, 10 p.m. 6.4 ppb (7) 0.1 ppb (1) 7.0 ppb (7) 6.0 ppb (6) N/A 0.0 ppb (0) 13.0 ppb (13) 0.26 ppb (4) 22.0 μg/m3 (21) 12.7 μg/m3 (53) 53.0
 
Jan. 25, 2021, 9 p.m. 7.6 ppb (8) 1.2 ppb (2) 8.0 ppb (8) 6.0 ppb (6) N/A 0.0 ppb (0) 13.0 ppb (13) 0.26 ppb (4) 26.4 μg/m3 (25) 13.8 μg/m3 (55) 55.0
 
Jan. 25, 2021, 8 p.m. 9.7 ppb (10) 2.3 ppb (3) 10.0 ppb (10) 8.0 ppb (8) N/A 0.0 ppb (0) 12.0 ppb (12) 0.28 ppb (4) 27.4 μg/m3 (26) 14.8 μg/m3 (57) 57.0
 
Jan. 25, 2021, 7 p.m. 12.7 ppb (12) 3.2 ppb (4) 14.0 ppb (14) 10.0 ppb (10) N/A 0.0 ppb (0) 8.0 ppb (8) 0.3 ppb (4) 28.0 μg/m3 (26) 14.1 μg/m3 (56) 56.0
 
Jan. 25, 2021, 6 p.m. 16.6 ppb (16) 3.4 ppb (4) 17.0 ppb (17) 13.0 ppb (13) N/A 0.0 ppb (0) 4.0 ppb (4) 0.32 ppb (4) 27.2 μg/m3 (26) 12.9 μg/m3 (53) 53.0
 
Jan. 25, 2021, 5 p.m. 24.0 ppb (23) 8.7 ppb (9) 25.0 ppb (24) 15.0 ppb (15) N/A 0.0 ppb (0) 4.0 ppb (4) 0.32 ppb (4) 17.7 μg/m3 (17) 9.8 μg/m3 (41) 41.0
 
Jan. 25, 2021, 4 p.m. 8.4 ppb (8) 2.6 ppb (3) 7.0 ppb (7) 6.0 ppb (6) N/A 0.0 ppb (0) 12.0 ppb (12) 0.33 ppb (4) 16.0 μg/m3 (15) 9.3 μg/m3 (39) 39.0
 
Jan. 25, 2021, 3 p.m. 7.7 ppb (8) 1.2 ppb (2) 8.0 ppb (8) 7.0 ppb (7) N/A 0.0 ppb (0) 10.0 ppb (10) 0.25 ppb (3) 15.1 μg/m3 (14) 9.8 μg/m3 (41) 41.0
 
Jan. 25, 2021, 2 p.m. 8.4 ppb (8) 1.0 ppb (1) 9.0 ppb (9) 8.0 ppb (8) N/A 0.0 ppb (0) 9.0 ppb (9) 0.24 ppb (3) 15.0 μg/m3 (14) 10.0 μg/m3 (42) 42.0
 
Jan. 25, 2021, 1 p.m. 5.9 ppb (6) 0.1 ppb (1) 6.0 ppb (6) 6.0 ppb (6) N/A 0.0 ppb (0) 10.0 ppb (10) 0.23 ppb (3) 15.3 μg/m3 (15) 10.1 μg/m3 (43) 43.0
 
Jan. 25, 2021, noon 6.2 ppb (6) -0.3 ppb (0) 7.0 ppb (7) 7.0 ppb (7) N/A 0.0 ppb (0) 10.0 ppb (10) 0.24 ppb (3) 16.5 μg/m3 (16) 11.1 μg/m3 (47) 47.0
 
Jan. 25, 2021, 11 a.m. 4.8 ppb (5) -0.3 ppb (0) 5.0 ppb (5) 5.0 ppb (5) N/A 0.0 ppb (0) 12.0 ppb (12) 0.23 ppb (3) 16.1 μg/m3 (15) 11.0 μg/m3 (46) 46.0
 
Jan. 25, 2021, 10 a.m. 3.8 ppb (4) -0.3 ppb (0) 4.0 ppb (4) 4.0 ppb (4) N/A 0.0 ppb (0) 13.0 ppb (13) 0.22 ppb (3) 14.7 μg/m3 (14) 10.1 μg/m3 (43) 43.0
 
Jan. 25, 2021, 9 a.m. 4.4 ppb (5) -0.3 ppb (0) 5.0 ppb (5) 5.0 ppb (5) N/A 0.0 ppb (0) N/A 0.22 ppb (3) 14.0 μg/m3 (13) 9.5 μg/m3 (40) 40.0
 
Jan. 25, 2021, 8 a.m. 6.0 ppb (6) -0.3 ppb (0) 6.0 ppb (6) 6.0 ppb (6) N/A 0.0 ppb (0) N/A 0.23 ppb (3) 14.1 μg/m3 (14) 9.2 μg/m3 (39) 39.0
 
Jan. 25, 2021, 7 a.m. 6.8 ppb (7) -0.3 ppb (0) 7.0 ppb (7) 7.0 ppb (7) N/A 0.0 ppb (0) 17.0 ppb (16) 0.24 ppb (3) 14.6 μg/m3 (14) 10.1 μg/m3 (43) 43.0
 
Jan. 25, 2021, 6 a.m. 6.8 ppb (7) -0.3 ppb (0) 7.0 ppb (7) 7.0 ppb (7) N/A 0.0 ppb (0) 19.0 ppb (18) 0.28 ppb (4) 15.0 μg/m3 (14) 9.6 μg/m3 (40) 40.0
 
Jan. 25, 2021, 5 a.m. 3.2 ppb (4) -0.4 ppb (0) 3.0 ppb (3) 4.0 ppb (4) N/A 0.0 ppb (0) 23.0 ppb (22) 0.22 ppb (3) 12.1 μg/m3 (12) 7.0 μg/m3 (30) 30.0
 
Jan. 25, 2021, 4 a.m. 4.0 ppb (4) -0.4 ppb (0) 4.0 ppb (4) 4.0 ppb (4) N/A 0.0 ppb (0) 22.0 ppb (21) 0.24 ppb (3) 15.2 μg/m3 (15) 9.9 μg/m3 (42) 42.0
 
Jan. 25, 2021, 3 a.m. 2.1 ppb (2) -0.4 ppb (0) 2.0 ppb (2) 3.0 ppb (3) N/A 0.0 ppb (0) 27.0 ppb (25) 0.2 ppb (3) 12.7 μg/m3 (12) 7.4 μg/m3 (31) 31.0
 
Jan. 25, 2021, 2 a.m. 2.0 ppb (2) -0.4 ppb (0) 2.0 ppb (2) 3.0 ppb (3) N/A 0.0 ppb (0) 29.0 ppb (27) 0.2 ppb (3) 12.1 μg/m3 (12) 7.0 μg/m3 (30) 30.0
 
Jan. 25, 2021, 1 a.m. 1.7 ppb (2) -0.4 ppb (0) 1.0 ppb (1) 2.0 ppb (2) N/A 0.0 ppb (0) 30.0 ppb (28) 0.2 ppb (3) 13.4 μg/m3 (13) 7.1 μg/m3 (30) 30.0
 
Jan. 25, 2021, midnight 1.9 ppb (2) -0.4 ppb (0) 1.0 ppb (1) 2.0 ppb (2) N/A 0.0 ppb (0) 31.0 ppb (29) 0.2 ppb (3) 11.9 μg/m3 (12) 6.8 μg/m3 (29) 29.0
 
Jan. 24, 2021, 11 p.m. 2.4 ppb (3) -0.4 ppb (0) 2.0 ppb (2) 3.0 ppb (3) N/A 0.0 ppb (0) 32.0 ppb (30) 0.19 ppb (3) 12.1 μg/m3 (12) 6.5 μg/m3 (28) 30.0
 
Jan. 24, 2021, 10 p.m. 2.2 ppb (3) -0.3 ppb (0) 1.0 ppb (1) 3.0 ppb (3) N/A 0.0 ppb (0) 34.0 ppb (32) 0.19 ppb (3) 11.9 μg/m3 (12) 6.5 μg/m3 (28) 32.0
 
Jan. 24, 2021, 9 p.m. 3.1 ppb (3) -0.1 ppb (0) 2.0 ppb (2) 3.0 ppb (3) N/A 0.0 ppb (0) 35.0 ppb (33) 0.18 ppb (3) 12.1 μg/m3 (12) 6.0 μg/m3 (25) 33.0
 
Jan. 24, 2021, 8 p.m. 2.3 ppb (3) -0.2 ppb (0) 1.0 ppb (1) 3.0 ppb (3) N/A 0.0 ppb (0) 38.0 ppb (36) 0.18 ppb (3) 11.4 μg/m3 (11) 6.2 μg/m3 (26) 36.0
 
Jan. 24, 2021, 7 p.m. 2.0 ppb (2) -0.2 ppb (0) 1.0 ppb (1) 2.0 ppb (2) N/A 0.0 ppb (0) 38.0 ppb (36) 0.18 ppb (3) 11.4 μg/m3 (11) 5.7 μg/m3 (24) 36.0
 
Jan. 24, 2021, 6 p.m. 2.1 ppb (2) -0.2 ppb (0) 1.0 ppb (1) 2.0 ppb (2) N/A 0.0 ppb (0) 39.0 ppb (37) 0.18 ppb (3) 11.4 μg/m3 (11) 6.2 μg/m3 (26) 37.0
 
Jan. 24, 2021, 5 p.m. 2.4 ppb (3) -0.1 ppb (0) 1.0 ppb (1) 3.0 ppb (3) N/A 0.0 ppb (0) 37.0 ppb (35) 0.18 ppb (3) 11.6 μg/m3 (11) 6.5 μg/m3 (28) 35.0
 
Jan. 24, 2021, 4 p.m. 2.4 ppb (3) 0.1 ppb (1) 2.0 ppb (2) 2.0 ppb (2) N/A 0.0 ppb (0) 34.0 ppb (32) 0.18 ppb (3) 9.4 μg/m3 (9) 6.2 μg/m3 (26) 32.0
 
Jan. 24, 2021, 3 p.m. 2.6 ppb (3) 0.2 ppb (1) 2.0 ppb (2) 3.0 ppb (3) N/A 0.0 ppb (0) 31.0 ppb (29) 0.18 ppb (3) 9.8 μg/m3 (10) 6.0 μg/m3 (25) 29.0
 
Jan. 24, 2021, 2 p.m. 3.6 ppb (4) 0.2 ppb (1) 4.0 ppb (4) 3.0 ppb (3) N/A 0.0 ppb (0) 27.0 ppb (25) 0.19 ppb (3) 11.3 μg/m3 (11) 7.3 μg/m3 (31) 31.0
 
Jan. 24, 2021, 1 p.m. 7.4 ppb (7) 0.3 ppb (1) 8.0 ppb (8) 7.0 ppb (7) N/A 0.0 ppb (0) 20.0 ppb (19) 0.23 ppb (3) 12.3 μg/m3 (12) 8.5 μg/m3 (36) 36.0
 
Jan. 24, 2021, noon 7.0 ppb (7) -0.2 ppb (0) 9.0 ppb (9) 7.0 ppb (7) N/A 0.0 ppb (0) 18.0 ppb (17) 0.22 ppb (3) 12.0 μg/m3 (12) 8.8 μg/m3 (37) 37.0
 
Jan. 24, 2021, 11 a.m. 5.7 ppb (6) -0.2 ppb (0) 6.0 ppb (6) 6.0 ppb (6) N/A 0.0 ppb (0) 22.0 ppb (21) 0.22 ppb (3) 12.4 μg/m3 (12) 8.6 μg/m3 (36) 36.0
 
Jan. 24, 2021, 10 a.m. 15.2 ppb (15) 0.0 ppb (0) 15.0 ppb (15) 15.0 ppb (15) N/A 0.0 ppb (0) 11.0 ppb (11) 0.3 ppb (4) 13.6 μg/m3 (13) 9.6 μg/m3 (40) 40.0
 
Jan. 24, 2021, 9 a.m. 16.6 ppb (16) 0.2 ppb (1) 18.0 ppb (17) 17.0 ppb (17) N/A 0.0 ppb (0) 8.0 ppb (8) N/A 13.7 μg/m3 (13) 9.7 μg/m3 (41) 41.0
 
Jan. 24, 2021, 8 a.m. 12.8 ppb (13) -0.1 ppb (0) 11.0 ppb (11) 13.0 ppb (13) N/A 0.0 ppb (0) 16.0 ppb (15) N/A 14.6 μg/m3 (14) 10.2 μg/m3 (43) 43.0
 
Jan. 24, 2021, 7 a.m. 15.8 ppb (15) 0.0 ppb (0) 16.0 ppb (16) 16.0 ppb (16) N/A 0.0 ppb (0) 11.0 ppb (11) 0.3 ppb (4) 12.9 μg/m3 (12) 9.2 μg/m3 (39) 39.0
 
Jan. 24, 2021, 6 a.m. 11.2 ppb (11) -0.2 ppb (0) 11.0 ppb (11) 12.0 ppb (12) N/A 0.0 ppb (0) 18.0 ppb (17) 0.31 ppb (4) 14.6 μg/m3 (14) 10.2 μg/m3 (43) 43.0
 
Jan. 24, 2021, 5 a.m. 9.3 ppb (9) -0.1 ppb (0) 9.0 ppb (9) 10.0 ppb (10) N/A 0.0 ppb (0) 20.0 ppb (19) 0.3 ppb (4) 14.4 μg/m3 (14) 10.3 μg/m3 (43) 43.0
 
Jan. 24, 2021, 4 a.m. 9.2 ppb (9) -0.1 ppb (0) 8.0 ppb (8) 10.0 ppb (10) N/A 0.0 ppb (0) 23.0 ppb (22) 0.33 ppb (4) 16.3 μg/m3 (16) 10.9 μg/m3 (46) 46.0
 
Jan. 24, 2021, 3 a.m. 43.4 ppb (41) 15.3 ppb (15) 31.0 ppb (30) 28.0 ppb (27) N/A 0.0 ppb (0) 4.0 ppb (4) 0.74 ppb (8) 23.4 μg/m3 (22) 16.7 μg/m3 (61) 61.0
 
Jan. 24, 2021, 2 a.m. 77.0 ppb (76) 48.2 ppb (46) 101.0 ppb (101) 29.0 ppb (28) N/A 1.0 ppb (2) 0.0 ppb (0) 1.01 ppb (12) 40.8 μg/m3 (38) 25.1 μg/m3 (79) 101.0
 
Jan. 24, 2021, 1 a.m. 48.5 ppb (46) 16.2 ppb (16) 53.0 ppb (50) 32.0 ppb (31) N/A 0.0 ppb (0) 2.0 ppb (2) 0.76 ppb (10) 17.7 μg/m3 (17) 12.3 μg/m3 (52) 52.0
 
Jan. 24, 2021, midnight 24.6 ppb (24) 2.1 ppb (2) 25.0 ppb (24) 23.0 ppb (22) N/A 0.0 ppb (0) 14.0 ppb (13) 0.58 ppb (7) 29.0 μg/m3 (27) 23.0 μg/m3 (74) 74.0
 
Jan. 23, 2021, 11 p.m. 7.6 ppb (8) -0.3 ppb (0) 9.0 ppb (9) 8.0 ppb (8) N/A 0.0 ppb (0) 31.0 ppb (29) 0.31 ppb (4) 12.8 μg/m3 (12) 7.9 μg/m3 (33) 33.0
 
Jan. 23, 2021, 10 p.m. 3.2 ppb (4) -0.3 ppb (0) 2.0 ppb (2) 4.0 ppb (4) N/A 0.0 ppb (0) 38.0 ppb (36) 0.19 ppb (3) 8.9 μg/m3 (9) 4.5 μg/m3 (19) 36.0
 
Jan. 23, 2021, 9 p.m. 4.4 ppb (5) 0.0 ppb (0) 3.0 ppb (3) 4.0 ppb (4) N/A 0.0 ppb (0) 38.0 ppb (36) 0.2 ppb (3) 9.6 μg/m3 (9) 4.4 μg/m3 (19) 36.0
 
Jan. 23, 2021, 8 p.m. 5.3 ppb (5) 0.5 ppb (1) 4.0 ppb (4) 5.0 ppb (5) N/A 0.0 ppb (0) 37.0 ppb (35) 0.2 ppb (3) 10.1 μg/m3 (10) 4.1 μg/m3 (18) 35.0
 
Jan. 23, 2021, 7 p.m. 7.2 ppb (7) 1.2 ppb (2) 6.0 ppb (6) 6.0 ppb (6) N/A 0.0 ppb (0) 35.0 ppb (33) 0.22 ppb (3) 12.7 μg/m3 (12) 4.5 μg/m3 (19) 33.0
 
Jan. 23, 2021, 6 p.m. 7.3 ppb (7) 1.3 ppb (2) 6.0 ppb (6) 6.0 ppb (6) N/A 0.0 ppb (0) 35.0 ppb (33) 0.22 ppb (3) 12.8 μg/m3 (12) 5.4 μg/m3 (23) 33.0
 
Jan. 23, 2021, 5 p.m. 8.1 ppb (8) 1.8 ppb (2) 7.0 ppb (7) 6.0 ppb (6) N/A 0.0 ppb (0) 31.0 ppb (29) 0.22 ppb (3) 8.3 μg/m3 (8) 3.9 μg/m3 (17) 29.0
 
Jan. 23, 2021, 4 p.m. 10.9 ppb (11) 3.1 ppb (3) 11.0 ppb (11) 8.0 ppb (8) N/A 0.0 ppb (0) 26.0 ppb (25) 0.24 ppb (3) 7.8 μg/m3 (8) 3.7 μg/m3 (16) 25.0
 
Jan. 23, 2021, 3 p.m. 10.4 ppb (10) 2.9 ppb (3) 11.0 ppb (11) 8.0 ppb (8) N/A 0.0 ppb (0) 23.0 ppb (22) 0.23 ppb (3) 8.0 μg/m3 (8) 4.3 μg/m3 (18) 22.0
 
Jan. 23, 2021, 2 p.m. 12.4 ppb (12) 3.3 ppb (4) 13.0 ppb (13) 9.0 ppb (9) N/A 0.0 ppb (0) 19.0 ppb (18) 0.24 ppb (3) 8.4 μg/m3 (8) 4.8 μg/m3 (20) 20.0
 
Jan. 23, 2021, 1 p.m. 13.1 ppb (13) 1.6 ppb (2) 14.0 ppb (14) 12.0 ppb (12) N/A 0.0 ppb (0) 14.0 ppb (13) 0.24 ppb (3) 8.6 μg/m3 (8) 5.2 μg/m3 (22) 22.0
 
Jan. 23, 2021, noon 26.2 ppb (25) 7.0 ppb (7) 24.0 ppb (23) 19.0 ppb (18) N/A 0.0 ppb (0) 2.0 ppb (2) 0.32 ppb (4) 11.3 μg/m3 (11) 6.8 μg/m3 (29) 29.0
 
Jan. 23, 2021, 11 a.m. 16.3 ppb (16) 1.0 ppb (1) 17.0 ppb (17) 16.0 ppb (16) N/A 0.0 ppb (0) 7.0 ppb (7) 0.26 ppb (4) 11.1 μg/m3 (11) 7.4 μg/m3 (31) 31.0
 
Jan. 23, 2021, 10 a.m. 7.7 ppb (8) -0.3 ppb (0) 9.0 ppb (9) 8.0 ppb (8) N/A 0.0 ppb (0) 16.0 ppb (15) 0.22 ppb (3) 11.4 μg/m3 (11) 8.1 μg/m3 (34) 34.0
 
Jan. 23, 2021, 9 a.m. 8.7 ppb (9) -0.3 ppb (0) 9.0 ppb (9) 9.0 ppb (9) N/A 0.0 ppb (0) 15.0 ppb (14) 0.23 ppb (3) 13.1 μg/m3 (13) 8.8 μg/m3 (37) 37.0
 
Jan. 23, 2021, 8 a.m. 13.5 ppb (13) 0.7 ppb (1) 12.0 ppb (12) 13.0 ppb (13) N/A 0.0 ppb (0) 11.0 ppb (11) 0.29 ppb (4) 13.8 μg/m3 (13) 9.6 μg/m3 (40) 40.0
 
Jan. 23, 2021, 7 a.m. 22.1 ppb (21) 2.5 ppb (3) 18.0 ppb (17) 20.0 ppb (19) N/A 0.0 ppb (0) 5.0 ppb (5) 0.39 ppb (5) 15.4 μg/m3 (15) 10.1 μg/m3 (43) 43.0
 
Jan. 23, 2021, 6 a.m. 16.2 ppb (16) 0.4 ppb (1) 15.0 ppb (15) 16.0 ppb (16) N/A 0.0 ppb (0) 12.0 ppb (12) 0.32 ppb (4) 16.8 μg/m3 (16) 11.4 μg/m3 (48) 48.0
 
Jan. 23, 2021, 5 a.m. 14.1 ppb (14) -0.2 ppb (0) 13.0 ppb (13) 14.0 ppb (14) N/A 0.0 ppb (0) 15.0 ppb (14) 0.31 ppb (4) 12.1 μg/m3 (12) 7.6 μg/m3 (32) 32.0
 
Jan. 23, 2021, 4 a.m. 15.7 ppb (15) 0.3 ppb (1) 14.0 ppb (14) 16.0 ppb (16) N/A 0.0 ppb (0) 14.0 ppb (13) 0.32 ppb (4) 12.5 μg/m3 (12) 7.3 μg/m3 (31) 31.0
 
Jan. 23, 2021, 3 a.m. 48.6 ppb (46) 23.4 ppb (23) 34.0 ppb (33) 25.0 ppb (24) N/A 0.0 ppb (0) 4.0 ppb (4) 0.51 ppb (6) 15.1 μg/m3 (14) 7.4 μg/m3 (31) 46.0
 
Jan. 23, 2021, 2 a.m. 67.3 ppb (66) 38.4 ppb (37) 47.0 ppb (45) 29.0 ppb (28) N/A 0.0 ppb (0) 0.0 ppb (0) 0.6 ppb (7) 17.0 μg/m3 (16) 7.2 μg/m3 (31) 66.0
 
Jan. 23, 2021, 1 a.m. 67.7 ppb (66) 35.7 ppb (34) 81.0 ppb (80) 32.0 ppb (31) N/A 0.0 ppb (0) 0.0 ppb (0) 0.55 ppb (7) 16.1 μg/m3 (15) 5.9 μg/m3 (25) 80.0
 
Jan. 23, 2021, midnight 27.4 ppb (26) 0.4 ppb (1) 29.0 ppb (28) 27.0 ppb (26) N/A 0.0 ppb (0) 7.0 ppb (7) 0.34 ppb (4) 11.3 μg/m3 (11) 4.4 μg/m3 (19) 28.0
 
Jan. 22, 2021, 11 p.m. 17.2 ppb (17) -0.3 ppb (0) 19.0 ppb (18) 18.0 ppb (17) N/A 0.0 ppb (0) 17.0 ppb (16) 0.28 ppb (4) 9.9 μg/m3 (10) 3.8 μg/m3 (16) 18.0
 
Jan. 22, 2021, 10 p.m. 13.1 ppb (13) 0.2 ppb (1) 14.0 ppb (14) 13.0 ppb (13) N/A 0.0 ppb (0) 20.0 ppb (19) 0.25 ppb (3) 10.5 μg/m3 (10) 3.9 μg/m3 (17) 19.0
 
Jan. 22, 2021, 9 p.m. 11.2 ppb (11) 0.7 ppb (1) 11.0 ppb (11) 11.0 ppb (11) N/A 0.0 ppb (0) 23.0 ppb (22) 0.23 ppb (3) 10.5 μg/m3 (10) 3.8 μg/m3 (16) 22.0
 
Jan. 22, 2021, 8 p.m. 10.1 ppb (10) 1.6 ppb (2) 10.0 ppb (10) 9.0 ppb (9) N/A 0.0 ppb (0) 26.0 ppb (25) 0.23 ppb (3) 11.7 μg/m3 (11) 4.1 μg/m3 (18) 25.0
 
Jan. 22, 2021, 7 p.m. 20.0 ppb (19) 7.7 ppb (8) 21.0 ppb (20) 12.0 ppb (12) N/A 0.0 ppb (0) 16.0 ppb (15) 0.31 ppb (4) 16.1 μg/m3 (15) 8.3 μg/m3 (35) 35.0
 
Jan. 22, 2021, 6 p.m. 24.0 ppb (23) 10.1 ppb (10) 25.0 ppb (24) 14.0 ppb (14) N/A 0.0 ppb (0) 10.0 ppb (10) 0.33 ppb (4) 17.9 μg/m3 (17) 10.5 μg/m3 (44) 44.0
 
Jan. 22, 2021, 5 p.m. 29.0 ppb (28) 12.5 ppb (12) 31.0 ppb (30) 17.0 ppb (17) N/A 0.0 ppb (0) 6.0 ppb (6) 0.36 ppb (5) 19.2 μg/m3 (18) 12.1 μg/m3 (51) 51.0
 
Jan. 22, 2021, 4 p.m. 29.4 ppb (28) 12.7 ppb (12) 31.0 ppb (30) 17.0 ppb (17) N/A 0.0 ppb (0) 4.0 ppb (4) 0.35 ppb (4) 18.9 μg/m3 (18) 12.6 μg/m3 (53) 53.0
 
Jan. 22, 2021, 3 p.m. 25.9 ppb (25) 10.3 ppb (10) 28.0 ppb (27) 16.0 ppb (16) N/A 0.0 ppb (0) 4.0 ppb (4) 0.33 ppb (4) 17.8 μg/m3 (17) 12.0 μg/m3 (50) 50.0
 
Jan. 22, 2021, 2 p.m. 32.8 ppb (31) 15.3 ppb (15) 35.0 ppb (34) 18.0 ppb (17) N/A 0.0 ppb (0) 1.0 ppb (1) 0.34 ppb (4) 17.9 μg/m3 (17) 11.4 μg/m3 (48) 48.0
 
Jan. 22, 2021, 1 p.m. 29.2 ppb (28) 11.9 ppb (12) 31.0 ppb (30) 17.0 ppb (17) N/A 0.0 ppb (0) 0.0 ppb (0) 0.33 ppb (4) 16.7 μg/m3 (16) 10.3 μg/m3 (43) 43.0
 
Jan. 22, 2021, noon 22.4 ppb (22) 5.6 ppb (6) 26.0 ppb (25) 17.0 ppb (17) N/A 0.0 ppb (0) 0.0 ppb (0) 0.29 ppb (4) 16.6 μg/m3 (16) 10.6 μg/m3 (45) 45.0
 
Jan. 22, 2021, 11 a.m. 16.5 ppb (16) 1.5 ppb (2) 19.0 ppb (18) 15.0 ppb (15) N/A 0.0 ppb (0) 0.0 ppb (0) 0.27 ppb (4) 16.1 μg/m3 (15) 10.7 μg/m3 (45) 45.0
 
Jan. 22, 2021, 10 a.m. 13.5 ppb (13) 0.6 ppb (1) 16.0 ppb (16) 13.0 ppb (13) N/A 0.0 ppb (0) 2.0 ppb (2) 0.25 ppb (3) 15.9 μg/m3 (15) 10.8 μg/m3 (46) 46.0
 
Jan. 22, 2021, 9 a.m. 12.7 ppb (12) 0.4 ppb (1) 15.0 ppb (15) 12.0 ppb (12) N/A 0.0 ppb (0) 3.0 ppb (3) 0.27 ppb (4) 17.0 μg/m3 (16) 11.1 μg/m3 (47) 47.0
 
Jan. 22, 2021, 8 a.m. 10.5 ppb (10) 0.0 ppb (0) 13.0 ppb (13) 11.0 ppb (11) N/A 0.0 ppb (0) 5.0 ppb (5) 0.23 ppb (3) 15.9 μg/m3 (15) 10.2 μg/m3 (43) 43.0
 
Jan. 22, 2021, 7 a.m. 8.2 ppb (8) -0.3 ppb (0) 10.0 ppb (10) 9.0 ppb (9) N/A 0.0 ppb (0) 7.0 ppb (7) 0.23 ppb (3) 14.0 μg/m3 (13) 8.8 μg/m3 (37) 37.0
 
Jan. 22, 2021, 6 a.m. 8.6 ppb (9) -0.3 ppb (0) 10.0 ppb (10) 9.0 ppb (9) N/A 0.0 ppb (0) 9.0 ppb (9) 0.23 ppb (3) 12.0 μg/m3 (12) 7.6 μg/m3 (32) 32.0
 
Jan. 22, 2021, 5 a.m. 9.2 ppb (9) -0.3 ppb (0) 11.0 ppb (11) 10.0 ppb (10) N/A 0.0 ppb (0) 9.0 ppb (9) 0.24 ppb (3) 11.9 μg/m3 (12) 7.2 μg/m3 (31) 31.0
 
Jan. 22, 2021, 4 a.m. 10.3 ppb (10) -0.1 ppb (0) 12.0 ppb (12) 11.0 ppb (11) N/A 0.0 ppb (0) 9.0 ppb (9) 0.25 ppb (3) 13.7 μg/m3 (13) 8.5 μg/m3 (36) 36.0
 
Jan. 22, 2021, 3 a.m. 8.1 ppb (8) -0.3 ppb (0) 10.0 ppb (10) 9.0 ppb (9) N/A 0.0 ppb (0) 8.0 ppb (8) 0.24 ppb (3) 14.0 μg/m3 (13) 8.6 μg/m3 (36) 36.0
 
Jan. 22, 2021, 2 a.m. 7.1 ppb (7) -0.3 ppb (0) 8.0 ppb (8) 8.0 ppb (8) N/A 0.0 ppb (0) 11.0 ppb (11) 0.23 ppb (3) 12.9 μg/m3 (12) 8.2 μg/m3 (35) 35.0
 
Jan. 22, 2021, 1 a.m. 5.7 ppb (6) -0.4 ppb (0) 6.0 ppb (6) 6.0 ppb (6) N/A 0.0 ppb (0) 14.0 ppb (13) 0.23 ppb (3) 10.9 μg/m3 (11) 7.0 μg/m3 (30) 30.0
 
Jan. 22, 2021, midnight 6.7 ppb (7) -0.2 ppb (0) 7.0 ppb (7) 7.0 ppb (7) N/A 0.0 ppb (0) 13.0 ppb (13) 0.24 ppb (3) 10.6 μg/m3 (10) 6.8 μg/m3 (29) 29.0
 
Jan. 21, 2021, 11 p.m. N/A N/A 10.0 ppb (10) N/A N/A 0.0 ppb (0) 11.0 ppb (11) 0.26 ppb (4) 10.4 μg/m3 (10) 6.8 μg/m3 (29) 29.0
 
Jan. 21, 2021, 10 p.m. N/A N/A 16.0 ppb (16) N/A N/A 0.0 ppb (0) 6.0 ppb (6) 0.3 ppb (4) 12.8 μg/m3 (12) 8.9 μg/m3 (38) 38.0
 
Jan. 21, 2021, 9 p.m. N/A N/A 13.0 ppb (13) N/A N/A 0.0 ppb (0) 9.0 ppb (9) 0.27 ppb (4) 12.7 μg/m3 (12) 8.9 μg/m3 (38) 38.0
 
Jan. 21, 2021, 8 p.m. N/A N/A 14.0 ppb (14) N/A N/A 0.0 ppb (0) 10.0 ppb (10) 0.27 ppb (4) 13.1 μg/m3 (13) 9.0 μg/m3 (38) 38.0
 
Jan. 21, 2021, 7 p.m. N/A N/A 16.0 ppb (16) N/A N/A 0.0 ppb (0) 11.0 ppb (11) 0.28 ppb (4) 13.3 μg/m3 (13) 8.6 μg/m3 (36) 36.0
 
Jan. 21, 2021, 6 p.m. 20.1 ppb (19) 3.9 ppb (4) N/A 16.0 ppb (16) N/A 0.0 ppb (0) 10.0 ppb (10) 0.29 ppb (4) 13.9 μg/m3 (13) 9.6 μg/m3 (40) 40.0
 
Jan. 21, 2021, 5 p.m. 16.5 ppb (16) 4.2 ppb (4) N/A 12.0 ppb (12) N/A 0.0 ppb (0) 15.0 ppb (14) 0.28 ppb (4) 14.8 μg/m3 (14) 10.6 μg/m3 (45) 45.0
 
Jan. 21, 2021, 4 p.m. 20.5 ppb (20) 2.8 ppb (3) N/A 18.0 ppb (17) N/A 0.0 ppb (0) 11.0 ppb (11) 0.28 ppb (4) 18.2 μg/m3 (17) 12.4 μg/m3 (52) 52.0
 
Jan. 21, 2021, 3 p.m. 23.4 ppb (23) 2.6 ppb (3) 25.0 ppb (24) 21.0 ppb (20) N/A 0.0 ppb (0) 11.0 ppb (11) 0.27 ppb (4) 18.1 μg/m3 (17) 11.5 μg/m3 (48) 48.0
 
Jan. 21, 2021, 2 p.m. 14.8 ppb (14) 1.0 ppb (1) 16.0 ppb (16) 14.0 ppb (14) N/A 0.0 ppb (0) 16.0 ppb (15) 0.23 ppb (3) 14.6 μg/m3 (14) 9.7 μg/m3 (41) 41.0
 
Jan. 21, 2021, 1 p.m. 19.6 ppb (19) 4.0 ppb (4) 20.0 ppb (19) 16.0 ppb (16) N/A 0.0 ppb (0) 10.0 ppb (10) 0.25 ppb (3) 11.4 μg/m3 (11) 6.8 μg/m3 (29) 29.0
 
Jan. 21, 2021, noon 20.0 ppb (19) 3.4 ppb (4) 22.0 ppb (21) 17.0 ppb (17) N/A 0.0 ppb (0) 1.0 ppb (1) 0.26 ppb (4) 10.1 μg/m3 (10) 6.7 μg/m3 (28) 28.0
 
Jan. 21, 2021, 11 a.m. 16.1 ppb (16) 0.2 ppb (1) 18.0 ppb (17) 16.0 ppb (16) N/A 0.0 ppb (0) 4.0 ppb (4) 0.23 ppb (3) 10.5 μg/m3 (10) 6.9 μg/m3 (29) 29.0
 
Jan. 21, 2021, 10 a.m. 9.5 ppb (9) -0.3 ppb (0) 11.0 ppb (11) 10.0 ppb (10) N/A 0.0 ppb (0) 11.0 ppb (11) 0.22 ppb (3) 9.7 μg/m3 (9) 6.5 μg/m3 (28) 28.0
 
Jan. 21, 2021, 9 a.m. 8.2 ppb (8) -0.3 ppb (0) 9.0 ppb (9) 9.0 ppb (9) N/A 0.0 ppb (0) 16.0 ppb (15) 0.2 ppb (3) 10.3 μg/m3 (10) 6.4 μg/m3 (27) 27.0
 
Jan. 21, 2021, 8 a.m. 6.4 ppb (7) -0.3 ppb (0) 7.0 ppb (7) 7.0 ppb (7) N/A 0.0 ppb (0) 20.0 ppb (19) 0.19 ppb (3) 10.0 μg/m3 (10) 6.3 μg/m3 (27) 27.0
 
Jan. 21, 2021, 7 a.m. 10.4 ppb (10) -0.2 ppb (0) 10.0 ppb (10) 11.0 ppb (11) N/A 0.0 ppb (0) 18.0 ppb (17) 0.2 ppb (3) 12.7 μg/m3 (12) 7.2 μg/m3 (31) 31.0
 
Jan. 21, 2021, 6 a.m. 26.1 ppb (25) 1.1 ppb (2) 27.0 ppb (26) 25.0 ppb (24) N/A 0.0 ppb (0) 3.0 ppb (3) 0.31 ppb (4) 13.7 μg/m3 (13) 8.0 μg/m3 (34) 34.0
 
Jan. 21, 2021, 5 a.m. 16.3 ppb (16) -0.2 ppb (0) 19.0 ppb (18) 17.0 ppb (17) N/A 0.0 ppb (0) 10.0 ppb (10) 0.29 ppb (4) 11.6 μg/m3 (11) 7.3 μg/m3 (31) 31.0
 
Jan. 21, 2021, 4 a.m. 13.1 ppb (13) -0.3 ppb (0) 15.0 ppb (15) 14.0 ppb (14) N/A 0.0 ppb (0) 15.0 ppb (14) 0.28 ppb (4) 11.9 μg/m3 (12) 7.3 μg/m3 (31) 31.0
 
Jan. 21, 2021, 3 a.m. 12.8 ppb (13) -0.3 ppb (0) 13.0 ppb (13) 13.0 ppb (13) N/A 0.0 ppb (0) 16.0 ppb (15) 0.27 ppb (4) 10.4 μg/m3 (10) 6.4 μg/m3 (27) 27.0
 
Jan. 21, 2021, 2 a.m. 12.1 ppb (12) -0.3 ppb (0) 13.0 ppb (13) 13.0 ppb (13) N/A 0.0 ppb (0) 19.0 ppb (18) 0.26 ppb (4) 10.3 μg/m3 (10) 5.8 μg/m3 (25) 25.0
 
Jan. 21, 2021, 1 a.m. 9.9 ppb (10) -0.3 ppb (0) 10.0 ppb (10) 10.0 ppb (10) N/A 0.0 ppb (0) 23.0 ppb (22) 0.24 ppb (3) 9.0 μg/m3 (9) 4.8 μg/m3 (20) 22.0
 
Jan. 21, 2021, midnight 10.2 ppb (10) -0.3 ppb (0) 10.0 ppb (10) 11.0 ppb (11) N/A 0.0 ppb (0) 24.0 ppb (23) 0.25 ppb (3) 9.3 μg/m3 (9) 4.5 μg/m3 (19) 23.0
 
Jan. 20, 2021, 11 p.m. 11.4 ppb (11) -0.3 ppb (0) 12.0 ppb (12) 12.0 ppb (12) N/A 0.0 ppb (0) 24.0 ppb (23) 0.25 ppb (3) 10.5 μg/m3 (10) 4.6 μg/m3 (20) 23.0
 
Jan. 20, 2021, 10 p.m. 9.0 ppb (9) -0.1 ppb (0) 9.0 ppb (9) 9.0 ppb (9) N/A 0.0 ppb (0) 29.0 ppb (27) 0.23 ppb (3) 9.8 μg/m3 (10) 4.6 μg/m3 (20) 27.0
 
Jan. 20, 2021, 9 p.m. 6.6 ppb (7) 0.1 ppb (1) 6.0 ppb (6) 7.0 ppb (7) N/A 0.0 ppb (0) 33.0 ppb (31) 0.21 ppb (3) 10.6 μg/m3 (10) 5.5 μg/m3 (23) 31.0
 
Jan. 20, 2021, 8 p.m. 8.1 ppb (8) 1.0 ppb (1) 8.0 ppb (8) 7.0 ppb (7) N/A 1.0 ppb (2) 32.0 ppb (30) 0.2 ppb (3) 10.6 μg/m3 (10) 4.4 μg/m3 (19) 30.0
 
Jan. 20, 2021, 7 p.m. 10.6 ppb (10) 2.2 ppb (3) 10.0 ppb (10) 9.0 ppb (9) N/A 2.0 ppb (3) 29.0 ppb (27) 0.2 ppb (3) 9.0 μg/m3 (9) 3.7 μg/m3 (16) 27.0
 
Jan. 20, 2021, 6 p.m. 6.2 ppb (6) 1.2 ppb (2) 6.0 ppb (6) 5.0 ppb (5) N/A 0.0 ppb (0) 33.0 ppb (31) 0.19 ppb (3) 8.1 μg/m3 (8) 3.9 μg/m3 (17) 31.0
 
Jan. 20, 2021, 5 p.m. 6.4 ppb (7) 1.3 ppb (2) 6.0 ppb (6) 5.0 ppb (5) N/A 0.0 ppb (0) 32.0 ppb (30) 0.2 ppb (3) 8.8 μg/m3 (9) 4.5 μg/m3 (19) 30.0
 
Jan. 20, 2021, 4 p.m. 8.7 ppb (9) 2.3 ppb (3) 9.0 ppb (9) 7.0 ppb (7) N/A 0.0 ppb (0) 28.0 ppb (26) 0.2 ppb (3) 11.7 μg/m3 (11) 5.7 μg/m3 (24) 26.0
 
Jan. 20, 2021, 3 p.m. 10.4 ppb (10) 2.7 ppb (3) 11.0 ppb (11) 8.0 ppb (8) N/A 0.0 ppb (0) 24.0 ppb (23) N/A 12.5 μg/m3 (12) 7.0 μg/m3 (30) 30.0
 
Jan. 20, 2021, 2 p.m. 9.4 ppb (9) 1.8 ppb (2) 10.0 ppb (10) 8.0 ppb (8) N/A 0.0 ppb (0) 23.0 ppb (22) N/A 17.8 μg/m3 (17) 8.9 μg/m3 (38) 38.0
 
Jan. 20, 2021, 1 p.m. 10.2 ppb (10) 0.7 ppb (1) 11.0 ppb (11) 10.0 ppb (10) N/A 0.0 ppb (0) 20.0 ppb (19) 0.25 ppb (3) 23.7 μg/m3 (22) 11.9 μg/m3 (50) 50.0