ID: 1118

AQSQID: 295100085

Site Name: Blair Street

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

Updated: July 9, 2020, 11:34 p.m.

Location: Saint Louis (Hyde Park), MO

Reporting: True, Located: True

Current AQI: 59.0

Saint Louis (Hyde Park) MO, US: 38.656449, -90.198548

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
July 9, 2020, 10 p.m. 1.6 ppb (1) 0.3 ppb (0) 3.5 ppb (3) 2.0 ppb (2) N/A 1.0 ppb (1) 41.0 ppb (32) 0.19 ppb (2) N/A 16.4 μg/m3 (59) 59.0
 
July 9, 2020, 9 p.m. 1.4 ppb (1) 0.4 ppb (0) 3.8 ppb (4) 2.0 ppb (2) N/A 1.0 ppb (1) 45.0 ppb (35) 0.2 ppb (2) N/A 14.0 μg/m3 (54) 54.0
 
July 9, 2020, 8 p.m. 2.1 ppb (2) 0.3 ppb (0) 4.3 ppb (4) 2.0 ppb (2) N/A 1.0 ppb (1) 48.0 ppb (37) 0.2 ppb (2) N/A 13.2 μg/m3 (53) 53.0
 
July 9, 2020, 7 p.m. 2.1 ppb (2) 0.3 ppb (0) 4.5 ppb (4) 2.0 ppb (2) N/A 1.0 ppb (1) 48.0 ppb (37) 0.19 ppb (2) N/A 0.0 μg/m3 (0) 37.0
 
July 9, 2020, 6 p.m. 2.4 ppb (2) 0.6 ppb (1) 5.3 ppb (5) 2.0 ppb (2) N/A 2.0 ppb (3) 53.0 ppb (41) 0.19 ppb (2) N/A N/A 41.0
 
July 9, 2020, 5 p.m. 1.5 ppb (1) 0.4 ppb (0) 3.3 ppb (3) 2.0 ppb (2) N/A 0.0 ppb (0) 48.0 ppb (37) 0.2 ppb (2) N/A N/A 37.0
 
July 9, 2020, 4 p.m. 4.0 ppb (4) 0.8 ppb (1) 6.0 ppb (6) 3.0 ppb (3) N/A 0.0 ppb (0) 48.0 ppb (37) 0.21 ppb (2) N/A 13.6 μg/m3 (53) 53.0
 
July 9, 2020, 3 p.m. 4.2 ppb (4) 0.6 ppb (1) 7.7 ppb (7) 4.0 ppb (4) N/A 0.0 ppb (0) 48.0 ppb (37) 0.22 ppb (2) N/A 10.6 μg/m3 (44) 44.0
 
July 9, 2020, 2 p.m. 6.9 ppb (6) 1.4 ppb (1) 9.7 ppb (9) 6.0 ppb (6) N/A 0.0 ppb (0) 39.0 ppb (30) 0.25 ppb (3) N/A 11.3 μg/m3 (47) 47.0
 
July 9, 2020, 1 p.m. 11.7 ppb (11) 3.1 ppb (3) 13.8 ppb (13) 9.0 ppb (8) N/A 1.0 ppb (1) 26.0 ppb (20) 0.34 ppb (4) N/A 14.6 μg/m3 (56) 56.0
 
July 9, 2020, noon 18.0 ppb (17) 4.2 ppb (4) 19.7 ppb (18) 14.0 ppb (13) N/A 1.0 ppb (1) 13.0 ppb (10) 0.28 ppb (3) N/A 13.2 μg/m3 (53) 53.0
 
July 9, 2020, 11 a.m. 27.8 ppb (26) 5.1 ppb (5) 28.9 ppb (27) 23.0 ppb (21) N/A 1.0 ppb (1) 7.0 ppb (5) 0.29 ppb (3) N/A 14.8 μg/m3 (56) 56.0
 
July 9, 2020, 10 a.m. 31.4 ppb (29) 5.1 ppb (5) 31.3 ppb (29) 27.0 ppb (25) N/A 0.0 ppb (0) 3.0 ppb (2) 0.3 ppb (3) N/A 12.5 μg/m3 (51) 51.0
 
July 9, 2020, 9 a.m. 29.1 ppb (27) 3.6 ppb (3) 28.2 ppb (26) 26.0 ppb (24) N/A 0.0 ppb (0) 8.0 ppb (6) 0.27 ppb (3) N/A 12.7 μg/m3 (51) 51.0
 
July 9, 2020, 8 a.m. 26.8 ppb (25) 0.7 ppb (1) 26.6 ppb (25) 26.0 ppb (24) N/A 0.0 ppb (0) 9.0 ppb (7) 0.27 ppb (3) N/A 12.4 μg/m3 (51) 51.0
 
July 9, 2020, 7 a.m. 17.6 ppb (16) 0.8 ppb (1) 18.2 ppb (17) 17.0 ppb (16) N/A 0.0 ppb (0) 19.0 ppb (15) 0.25 ppb (3) N/A 11.3 μg/m3 (47) 47.0
 
July 9, 2020, 6 a.m. 12.6 ppb (12) 0.4 ppb (0) 13.0 ppb (12) 13.0 ppb (12) N/A 0.0 ppb (0) 28.0 ppb (22) 0.24 ppb (3) N/A 12.7 μg/m3 (51) 51.0
 
July 9, 2020, 5 a.m. 12.4 ppb (11) 0.4 ppb (0) 12.7 ppb (12) 13.0 ppb (12) N/A 0.0 ppb (0) 32.0 ppb (25) 0.27 ppb (3) N/A 11.5 μg/m3 (48) 48.0
 
July 9, 2020, 4 a.m. 15.3 ppb (14) 0.3 ppb (0) 15.9 ppb (15) 15.0 ppb (14) N/A 0.0 ppb (0) 28.0 ppb (22) 0.29 ppb (3) N/A 11.0 μg/m3 (46) 46.0
 
July 9, 2020, 3 a.m. 9.2 ppb (9) 0.3 ppb (0) 10.6 ppb (10) 9.0 ppb (8) N/A 0.0 ppb (0) 36.0 ppb (28) 0.28 ppb (3) N/A 11.3 μg/m3 (47) 47.0
 
July 9, 2020, 2 a.m. 17.5 ppb (16) 0.8 ppb (1) 18.4 ppb (17) 17.0 ppb (16) N/A 0.0 ppb (0) 25.0 ppb (19) 0.33 ppb (4) N/A 12.2 μg/m3 (50) 50.0
 
July 9, 2020, 1 a.m. 12.0 ppb (11) 0.3 ppb (0) 13.9 ppb (13) 12.0 ppb (11) N/A 1.0 ppb (1) 37.0 ppb (28) 0.31 ppb (3) N/A 12.7 μg/m3 (51) 51.0
 
July 9, 2020, midnight 6.4 ppb (6) 0.3 ppb (0) 8.0 ppb (7) 7.0 ppb (6) N/A 1.0 ppb (1) 49.0 ppb (38) 0.25 ppb (3) N/A 18.1 μg/m3 (63) 63.0
 
July 8, 2020, 11 p.m. 6.1 ppb (6) 0.5 ppb (0) 8.4 ppb (8) 6.0 ppb (6) N/A 1.0 ppb (1) 51.0 ppb (39) 0.25 ppb (3) N/A 21.5 μg/m3 (70) 70.0
 
July 8, 2020, 10 p.m. 6.8 ppb (6) 0.4 ppb (0) 8.9 ppb (8) 7.0 ppb (6) N/A 1.0 ppb (1) 48.0 ppb (37) 0.26 ppb (3) N/A 17.9 μg/m3 (63) 63.0
 
July 8, 2020, 9 p.m. 5.8 ppb (5) 0.8 ppb (1) 7.8 ppb (7) 5.0 ppb (5) N/A 0.0 ppb (0) 46.0 ppb (35) 0.22 ppb (2) N/A 10.0 μg/m3 (42) 42.0
 
July 8, 2020, 8 p.m. 6.8 ppb (6) 1.1 ppb (1) 8.1 ppb (8) 6.0 ppb (6) N/A 0.0 ppb (0) 43.0 ppb (33) 0.21 ppb (2) N/A 10.3 μg/m3 (43) 43.0
 
July 8, 2020, 7 p.m. 10.0 ppb (9) 1.1 ppb (1) 13.6 ppb (13) 9.0 ppb (8) N/A 0.0 ppb (0) 55.0 ppb (42) 0.29 ppb (3) N/A 11.3 μg/m3 (47) 47.0
 
July 8, 2020, 6 p.m. 6.2 ppb (6) 0.6 ppb (1) 10.4 ppb (10) 6.0 ppb (6) N/A 0.0 ppb (0) 60.0 ppb (46) 0.28 ppb (3) N/A 17.0 μg/m3 (61) 61.0
 
July 8, 2020, 5 p.m. 10.5 ppb (10) 0.6 ppb (1) 17.3 ppb (16) 10.0 ppb (9) N/A 1.0 ppb (1) 86.0 ppb (68) 0.35 ppb (4) N/A 18.7 μg/m3 (64) 68.0
 
July 8, 2020, 4 p.m. 9.9 ppb (9) 0.9 ppb (1) 17.2 ppb (16) 9.0 ppb (8) N/A 2.0 ppb (3) 85.0 ppb (67) 0.33 ppb (4) N/A 22.9 μg/m3 (73) 73.0
 
July 8, 2020, 3 p.m. 9.3 ppb (9) 1.0 ppb (1) 16.3 ppb (15) 9.0 ppb (8) N/A 3.0 ppb (4) 69.0 ppb (53) 0.32 ppb (4) N/A 17.1 μg/m3 (61) 61.0
 
July 8, 2020, 2 p.m. 6.4 ppb (6) 0.7 ppb (1) 10.9 ppb (10) 6.0 ppb (6) N/A 4.0 ppb (6) 54.0 ppb (42) 0.31 ppb (3) N/A 14.5 μg/m3 (55) 55.0
 
July 8, 2020, 1 p.m. 7.6 ppb (7) 1.1 ppb (1) 10.5 ppb (10) 7.0 ppb (6) N/A 0.0 ppb (0) 36.0 ppb (28) 0.3 ppb (3) N/A 10.3 μg/m3 (43) 43.0
 
July 8, 2020, noon 12.8 ppb (12) 2.3 ppb (2) 13.9 ppb (13) 11.0 ppb (10) N/A 0.0 ppb (0) 23.0 ppb (18) 0.4 ppb (4) N/A 12.0 μg/m3 (50) 50.0
 
July 8, 2020, 11 a.m. 12.7 ppb (12) 1.5 ppb (1) 13.0 ppb (12) 11.0 ppb (10) N/A 0.0 ppb (0) 13.0 ppb (10) 0.27 ppb (3) N/A 15.0 μg/m3 (56) 56.0
 
July 8, 2020, 10 a.m. 8.2 ppb (8) 0.3 ppb (0) 8.9 ppb (8) 8.0 ppb (7) N/A 0.0 ppb (0) 15.0 ppb (12) 0.28 ppb (3) N/A 11.4 μg/m3 (48) 48.0
 
July 8, 2020, 9 a.m. 10.7 ppb (10) 0.3 ppb (0) 11.5 ppb (11) 11.0 ppb (10) N/A 0.0 ppb (0) 15.0 ppb (12) 0.26 ppb (3) N/A 13.7 μg/m3 (54) 54.0
 
July 8, 2020, 8 a.m. 9.1 ppb (8) 0.3 ppb (0) 10.6 ppb (10) 9.0 ppb (8) N/A 0.0 ppb (0) 15.0 ppb (12) 0.28 ppb (3) N/A 17.0 μg/m3 (61) 61.0
 
July 8, 2020, 7 a.m. 14.6 ppb (14) 0.4 ppb (0) 15.9 ppb (15) 15.0 ppb (14) N/A 0.0 ppb (0) 13.0 ppb (10) 0.4 ppb (4) N/A 16.9 μg/m3 (60) 60.0
 
July 8, 2020, 6 a.m. 17.8 ppb (16) 2.3 ppb (2) 17.7 ppb (16) 16.0 ppb (15) N/A 0.0 ppb (0) 15.0 ppb (12) 0.49 ppb (5) N/A 16.6 μg/m3 (60) 60.0
 
July 8, 2020, 5 a.m. 12.8 ppb (12) 0.5 ppb (0) 13.9 ppb (13) 13.0 ppb (12) N/A 0.0 ppb (0) 24.0 ppb (18) 0.42 ppb (5) N/A 23.4 μg/m3 (74) 74.0
 
July 8, 2020, 4 a.m. 17.2 ppb (16) 0.3 ppb (0) 18.5 ppb (17) 17.0 ppb (16) N/A 1.0 ppb (1) 26.0 ppb (20) 0.41 ppb (5) N/A 21.3 μg/m3 (70) 70.0
 
July 8, 2020, 3 a.m. 28.7 ppb (27) 0.5 ppb (0) 30.3 ppb (28) 28.0 ppb (26) N/A 1.0 ppb (1) 36.0 ppb (28) 0.43 ppb (5) N/A 29.6 μg/m3 (87) 87.0
 
July 8, 2020, 2 a.m. 23.2 ppb (21) 0.3 ppb (0) 26.2 ppb (24) 23.0 ppb (21) N/A 1.0 ppb (1) 50.0 ppb (38) 0.42 ppb (5) N/A 32.1 μg/m3 (93) 93.0
 
July 8, 2020, 1 a.m. 15.1 ppb (14) 0.3 ppb (0) 19.4 ppb (18) 15.0 ppb (14) N/A 1.0 ppb (1) 69.0 ppb (53) 0.43 ppb (5) N/A 28.2 μg/m3 (84) 84.0
 
July 8, 2020, midnight 11.3 ppb (10) 0.3 ppb (0) 14.6 ppb (14) 11.0 ppb (10) N/A 1.0 ppb (1) 75.0 ppb (58) 0.39 ppb (4) N/A 29.1 μg/m3 (86) 86.0
 
July 7, 2020, 11 p.m. 9.1 ppb (8) 0.3 ppb (0) 13.1 ppb (12) 9.0 ppb (8) N/A 1.0 ppb (1) 74.0 ppb (57) 0.33 ppb (4) N/A 26.3 μg/m3 (80) 80.0
 
July 7, 2020, 10 p.m. 3.6 ppb (3) 0.3 ppb (0) 6.6 ppb (6) 4.0 ppb (4) N/A 1.0 ppb (1) 73.0 ppb (57) 0.27 ppb (3) N/A 18.8 μg/m3 (64) 64.0
 
July 7, 2020, 9 p.m. 4.8 ppb (4) 0.3 ppb (0) 8.5 ppb (8) 5.0 ppb (5) N/A 1.0 ppb (1) 74.0 ppb (57) 0.26 ppb (3) N/A 18.5 μg/m3 (64) 64.0
 
July 7, 2020, 8 p.m. 5.1 ppb (5) 0.5 ppb (0) 9.0 ppb (8) 5.0 ppb (5) N/A 1.0 ppb (1) 72.0 ppb (56) 0.26 ppb (3) N/A 20.1 μg/m3 (67) 67.0
 
July 7, 2020, 7 p.m. 5.9 ppb (5) 0.8 ppb (1) 8.5 ppb (8) 5.0 ppb (5) N/A 0.0 ppb (0) 66.0 ppb (51) 0.31 ppb (3) N/A 18.0 μg/m3 (63) 63.0
 
July 7, 2020, 6 p.m. 6.0 ppb (6) 0.4 ppb (0) 8.7 ppb (8) 6.0 ppb (6) N/A 1.0 ppb (1) 68.0 ppb (52) 0.29 ppb (3) N/A 18.5 μg/m3 (64) 64.0
 
July 7, 2020, 5 p.m. 4.5 ppb (4) 0.3 ppb (0) 8.8 ppb (8) 4.0 ppb (4) N/A 2.0 ppb (3) 78.0 ppb (61) 0.28 ppb (3) N/A 22.1 μg/m3 (71) 71.0
 
July 7, 2020, 4 p.m. 4.1 ppb (4) 0.3 ppb (0) 8.6 ppb (8) 4.0 ppb (4) N/A 2.0 ppb (3) 80.0 ppb (62) 0.3 ppb (3) N/A 25.6 μg/m3 (79) 79.0
 
July 7, 2020, 3 p.m. 3.6 ppb (3) 0.3 ppb (0) 8.9 ppb (8) 4.0 ppb (4) N/A 1.0 ppb (1) 74.0 ppb (57) 0.36 ppb (4) N/A 26.4 μg/m3 (81) 81.0
 
July 7, 2020, 2 p.m. 5.9 ppb (5) 0.6 ppb (1) 10.5 ppb (10) 5.0 ppb (5) N/A 0.0 ppb (0) 54.0 ppb (42) 0.34 ppb (4) N/A 23.2 μg/m3 (74) 74.0
 
July 7, 2020, 1 p.m. 11.3 ppb (10) 1.9 ppb (2) 15.6 ppb (14) 10.0 ppb (9) N/A 0.0 ppb (0) 36.0 ppb (28) 0.43 ppb (5) N/A 19.4 μg/m3 (66) 66.0
 
July 7, 2020, noon 12.9 ppb (12) 2.0 ppb (2) 16.1 ppb (15) 11.0 ppb (10) N/A 0.0 ppb (0) 23.0 ppb (18) 0.43 ppb (5) N/A 21.1 μg/m3 (69) 69.0
 
July 7, 2020, 11 a.m. 19.8 ppb (18) 2.1 ppb (2) 21.5 ppb (20) 18.0 ppb (17) N/A 0.0 ppb (0) 9.0 ppb (7) 0.31 ppb (3) N/A 21.3 μg/m3 (70) 70.0
 
July 7, 2020, 10 a.m. 27.5 ppb (25) 1.3 ppb (1) 28.7 ppb (27) 26.0 ppb (24) N/A 0.0 ppb (0) 3.0 ppb (2) 0.29 ppb (3) N/A 21.2 μg/m3 (70) 70.0
 
July 7, 2020, 9 a.m. 22.9 ppb (21) 0.7 ppb (1) 25.1 ppb (23) 22.0 ppb (20) N/A 0.0 ppb (0) 6.0 ppb (5) 0.32 ppb (4) N/A 18.1 μg/m3 (63) 63.0
 
July 7, 2020, 8 a.m. 14.7 ppb (14) 0.3 ppb (0) 16.7 ppb (15) 15.0 ppb (14) N/A 0.0 ppb (0) 16.0 ppb (12) 0.3 ppb (3) N/A 18.8 μg/m3 (64) 64.0
 
July 7, 2020, 7 a.m. 15.2 ppb (14) 0.4 ppb (0) 17.0 ppb (16) 15.0 ppb (14) N/A 0.0 ppb (0) 22.0 ppb (17) 0.3 ppb (3) N/A 17.8 μg/m3 (62) 62.0
 
July 7, 2020, 6 a.m. 14.2 ppb (13) 0.3 ppb (0) 16.5 ppb (15) 14.0 ppb (13) N/A 0.0 ppb (0) 32.0 ppb (25) 0.28 ppb (3) N/A 18.4 μg/m3 (64) 64.0
 
July 7, 2020, 5 a.m. 13.6 ppb (13) 0.3 ppb (0) 15.2 ppb (14) 14.0 ppb (13) N/A 1.0 ppb (1) 33.0 ppb (25) 0.28 ppb (3) N/A 22.1 μg/m3 (71) 71.0
 
July 7, 2020, 4 a.m. 11.4 ppb (11) 0.3 ppb (0) 14.2 ppb (13) 12.0 ppb (11) N/A 2.0 ppb (3) 44.0 ppb (34) 0.33 ppb (4) N/A 21.0 μg/m3 (69) 69.0
 
July 7, 2020, 3 a.m. 20.0 ppb (19) 0.3 ppb (0) 21.2 ppb (20) 20.0 ppb (19) N/A 5.0 ppb (7) 37.0 ppb (28) 0.38 ppb (4) N/A 26.7 μg/m3 (81) 81.0
 
July 7, 2020, 2 a.m. 30.6 ppb (28) 0.8 ppb (1) 32.1 ppb (30) 30.0 ppb (28) N/A 1.0 ppb (1) 23.0 ppb (18) 0.43 ppb (5) N/A 24.2 μg/m3 (76) 76.0
 
July 7, 2020, 1 a.m. 6.8 ppb (6) 0.3 ppb (0) 9.1 ppb (8) 7.0 ppb (6) N/A 0.0 ppb (0) 52.0 ppb (40) 0.34 ppb (4) N/A 17.8 μg/m3 (62) 62.0
 
July 7, 2020, midnight 4.4 ppb (4) 0.3 ppb (0) 6.0 ppb (6) 5.0 ppb (5) N/A 1.0 ppb (1) 60.0 ppb (46) 0.23 ppb (3) N/A 17.8 μg/m3 (62) 62.0
 
July 6, 2020, 11 p.m. 3.3 ppb (3) 0.4 ppb (0) 5.4 ppb (5) 3.0 ppb (3) N/A 0.0 ppb (0) 59.0 ppb (45) 0.21 ppb (2) N/A 18.4 μg/m3 (64) 64.0
 
July 6, 2020, 10 p.m. 2.4 ppb (2) 0.3 ppb (0) 5.1 ppb (5) 3.0 ppb (3) N/A 0.0 ppb (0) 62.0 ppb (48) 0.22 ppb (2) N/A 16.9 μg/m3 (60) 60.0
 
July 6, 2020, 9 p.m. 2.7 ppb (3) 0.4 ppb (0) 5.4 ppb (5) 3.0 ppb (3) N/A 1.0 ppb (1) 63.0 ppb (48) 0.21 ppb (2) N/A 17.1 μg/m3 (61) 61.0
 
July 6, 2020, 8 p.m. 3.8 ppb (4) 0.4 ppb (0) 6.6 ppb (6) 4.0 ppb (4) N/A 1.0 ppb (1) 64.0 ppb (49) 0.22 ppb (2) N/A 19.0 μg/m3 (65) 65.0
 
July 6, 2020, 7 p.m. 5.8 ppb (5) 0.9 ppb (1) 8.5 ppb (8) 5.0 ppb (5) N/A 1.0 ppb (1) 62.0 ppb (48) 0.23 ppb (3) N/A 15.3 μg/m3 (57) 57.0
 
July 6, 2020, 6 p.m. 3.3 ppb (3) 0.4 ppb (0) 6.7 ppb (6) 3.0 ppb (3) N/A 1.0 ppb (1) 65.0 ppb (50) 0.21 ppb (2) N/A 16.3 μg/m3 (59) 59.0
 
July 6, 2020, 5 p.m. 4.3 ppb (4) 0.5 ppb (0) 8.1 ppb (8) 4.0 ppb (4) N/A 1.0 ppb (1) 69.0 ppb (53) 0.22 ppb (2) N/A 16.7 μg/m3 (60) 60.0
 
July 6, 2020, 4 p.m. 6.9 ppb (6) 1.1 ppb (1) 11.1 ppb (10) 6.0 ppb (6) N/A 0.0 ppb (0) 63.0 ppb (48) 0.25 ppb (3) N/A 14.8 μg/m3 (56) 56.0
 
July 6, 2020, 3 p.m. 16.8 ppb (16) 3.4 ppb (3) 21.0 ppb (19) 14.0 ppb (13) N/A 1.0 ppb (1) 47.0 ppb (36) 0.3 ppb (3) N/A 20.3 μg/m3 (68) 68.0
 
July 6, 2020, 2 p.m. 25.3 ppb (23) 6.6 ppb (6) 29.6 ppb (27) 19.0 ppb (18) N/A 0.0 ppb (0) 32.0 ppb (25) 0.3 ppb (3) N/A 20.1 μg/m3 (67) 67.0
 
July 6, 2020, 1 p.m. 26.1 ppb (24) 7.6 ppb (7) 30.3 ppb (28) 19.0 ppb (18) N/A 0.0 ppb (0) 25.0 ppb (19) 0.31 ppb (3) N/A 17.0 μg/m3 (61) 61.0
 
July 6, 2020, noon 28.2 ppb (26) 5.9 ppb (5) 29.2 ppb (27) 23.0 ppb (21) N/A 0.0 ppb (0) 24.0 ppb (18) 0.26 ppb (3) N/A 16.7 μg/m3 (60) 60.0
 
July 6, 2020, 11 a.m. 26.0 ppb (24) 3.1 ppb (3) 28.7 ppb (27) 23.0 ppb (21) N/A 0.0 ppb (0) 13.0 ppb (10) 0.34 ppb (4) N/A 13.9 μg/m3 (54) 54.0
 
July 6, 2020, 10 a.m. 27.8 ppb (26) 0.8 ppb (1) 27.8 ppb (26) 27.0 ppb (25) N/A 0.0 ppb (0) 11.0 ppb (8) 0.32 ppb (4) N/A 18.8 μg/m3 (64) 64.0
 
July 6, 2020, 9 a.m. 16.4 ppb (15) 0.4 ppb (0) 20.5 ppb (19) 17.0 ppb (16) N/A 0.0 ppb (0) 21.0 ppb (16) 0.24 ppb (3) N/A 13.6 μg/m3 (53) 53.0
 
July 6, 2020, 8 a.m. 11.4 ppb (11) 0.3 ppb (0) 12.3 ppb (11) 12.0 ppb (11) N/A 0.0 ppb (0) 30.0 ppb (23) 0.26 ppb (3) N/A 8.3 μg/m3 (35) 35.0
 
July 6, 2020, 7 a.m. 12.1 ppb (11) 0.3 ppb (0) 13.3 ppb (12) 13.0 ppb (12) N/A 0.0 ppb (0) 36.0 ppb (28) 0.24 ppb (3) N/A 10.0 μg/m3 (42) 42.0
 
July 6, 2020, 6 a.m. 19.2 ppb (18) 0.3 ppb (0) 20.1 ppb (19) 19.0 ppb (18) N/A 0.0 ppb (0) 23.0 ppb (18) 0.25 ppb (3) N/A 15.0 μg/m3 (56) 56.0
 
July 6, 2020, 5 a.m. 20.5 ppb (19) 0.3 ppb (0) 21.5 ppb (20) 21.0 ppb (19) N/A 0.0 ppb (0) 24.0 ppb (18) 0.32 ppb (4) N/A 17.0 μg/m3 (61) 61.0
 
July 6, 2020, 4 a.m. 18.0 ppb (17) 0.3 ppb (0) 19.3 ppb (18) 18.0 ppb (17) N/A 1.0 ppb (1) 26.0 ppb (20) 0.35 ppb (4) N/A 24.5 μg/m3 (77) 77.0
 
July 6, 2020, 3 a.m. 24.2 ppb (22) 0.3 ppb (0) 24.0 ppb (22) 24.0 ppb (22) N/A 1.0 ppb (1) 26.0 ppb (20) 0.35 ppb (4) N/A 20.2 μg/m3 (67) 67.0
 
July 6, 2020, 2 a.m. 23.0 ppb (21) 0.4 ppb (0) 23.1 ppb (21) 23.0 ppb (21) N/A 0.0 ppb (0) 28.0 ppb (22) 0.3 ppb (3) N/A 16.0 μg/m3 (59) 59.0
 
July 6, 2020, 1 a.m. 10.0 ppb (9) 0.4 ppb (0) 11.2 ppb (10) 10.0 ppb (9) N/A 0.0 ppb (0) 42.0 ppb (32) 0.27 ppb (3) N/A 14.1 μg/m3 (54) 54.0
 
July 6, 2020, midnight 9.2 ppb (9) 0.4 ppb (0) 10.5 ppb (10) 9.0 ppb (8) N/A 1.0 ppb (1) 45.0 ppb (35) 0.28 ppb (3) N/A 10.4 μg/m3 (43) 43.0
 
July 5, 2020, 11 p.m. 9.9 ppb (9) 0.4 ppb (0) 11.1 ppb (10) 10.0 ppb (9) N/A 2.0 ppb (3) 45.0 ppb (35) 0.27 ppb (3) N/A 11.5 μg/m3 (48) 48.0
 
July 5, 2020, 10 p.m. 8.3 ppb (8) 0.5 ppb (0) 9.9 ppb (9) 8.0 ppb (7) N/A 2.0 ppb (3) 49.0 ppb (38) 0.31 ppb (3) N/A 7.7 μg/m3 (32) 38.0
 
July 5, 2020, 9 p.m. 4.1 ppb (4) 0.4 ppb (0) N/A 4.0 ppb (4) N/A 1.0 ppb (1) 56.0 ppb (43) 0.22 ppb (2) N/A 14.0 μg/m3 (54) 54.0
 
July 5, 2020, 8 p.m. 1.9 ppb (2) 0.3 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 61.0 ppb (47) 0.21 ppb (2) N/A 16.4 μg/m3 (59) 59.0
 
July 5, 2020, 7 p.m. 1.4 ppb (1) 0.3 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 63.0 ppb (48) 0.21 ppb (2) N/A 15.9 μg/m3 (58) 58.0
 
July 5, 2020, 6 p.m. 1.6 ppb (1) 0.3 ppb (0) 4.0 ppb (4) 2.0 ppb (2) N/A 1.0 ppb (1) 63.0 ppb (48) 0.2 ppb (2) N/A 14.5 μg/m3 (55) 55.0
 
July 5, 2020, 5 p.m. 1.9 ppb (2) 0.3 ppb (0) 5.2 ppb (5) 2.0 ppb (2) N/A 1.0 ppb (1) 65.0 ppb (50) 0.24 ppb (3) N/A 16.9 μg/m3 (60) 60.0
 
July 5, 2020, 4 p.m. 3.0 ppb (3) 0.4 ppb (0) 6.4 ppb (6) 3.0 ppb (3) N/A 3.0 ppb (4) 62.0 ppb (48) 0.29 ppb (3) N/A 15.2 μg/m3 (57) 57.0
 
July 5, 2020, 3 p.m. 4.0 ppb (4) 0.5 ppb (0) 7.5 ppb (7) 4.0 ppb (4) N/A N/A 53.0 ppb (41) 0.3 ppb (3) N/A 21.4 μg/m3 (70) 70.0
 
July 5, 2020, 2 p.m. 3.8 ppb (4) 0.6 ppb (1) 6.7 ppb (6) 3.0 ppb (3) N/A N/A 46.0 ppb (35) 0.21 ppb (2) N/A 19.8 μg/m3 (67) 67.0
 
July 5, 2020, 1 p.m. 6.0 ppb (6) 0.8 ppb (1) 8.6 ppb (8) 5.0 ppb (5) N/A 2.0 ppb (3) 38.0 ppb (29) 0.24 ppb (3) N/A 19.2 μg/m3 (65) 65.0
 
July 5, 2020, noon 9.7 ppb (9) 1.1 ppb (1) 11.9 ppb (11) 9.0 ppb (8) N/A 1.0 ppb (1) 31.0 ppb (24) 0.23 ppb (3) N/A 25.5 μg/m3 (79) 79.0
 
July 5, 2020, 11 a.m. 14.7 ppb (14) 0.9 ppb (1) 16.9 ppb (16) 14.0 ppb (13) N/A 0.0 ppb (0) 23.0 ppb (18) N/A N/A 53.5 μg/m3 (145) 145.0
 
July 5, 2020, 10 a.m. 12.6 ppb (12) 0.3 ppb (0) 15.0 ppb (14) 13.0 ppb (12) N/A 0.0 ppb (0) 22.0 ppb (17) N/A N/A 71.9 μg/m3 (159) 159.0
 
July 5, 2020, 9 a.m. 18.3 ppb (17) 0.3 ppb (0) 20.8 ppb (19) 18.0 ppb (17) N/A 1.0 ppb (1) 21.0 ppb (16) 0.46 ppb (5) N/A 138.0 μg/m3 (193) 193.0
 
July 5, 2020, 8 a.m. 26.6 ppb (25) 0.3 ppb (0) 29.6 ppb (27) 27.0 ppb (25) N/A 1.0 ppb (1) N/A 0.63 ppb (7) N/A 180.0 μg/m3 (230) 230.0
 
July 5, 2020, 7 a.m. 26.0 ppb (24) 0.3 ppb (0) 28.4 ppb (26) 26.0 ppb (24) N/A 1.0 ppb (1) 14.0 ppb (11) 0.72 ppb (8) N/A 155.8 μg/m3 (205) 205.0
 
July 5, 2020, 6 a.m. 23.3 ppb (22) 0.4 ppb (0) 25.4 ppb (24) 23.0 ppb (21) N/A 1.0 ppb (1) 16.0 ppb (12) 0.7 ppb (8) N/A 116.0 μg/m3 (182) 182.0
 
July 5, 2020, 5 a.m. 17.6 ppb (16) 0.3 ppb (0) 20.1 ppb (19) 18.0 ppb (17) N/A 1.0 ppb (1) 22.0 ppb (17) 0.48 ppb (5) N/A 92.1 μg/m3 (169) 169.0
 
July 5, 2020, 4 a.m. 15.8 ppb (15) 0.3 ppb (0) 18.2 ppb (17) 16.0 ppb (15) N/A 1.0 ppb (1) 30.0 ppb (23) 0.45 ppb (5) N/A 86.7 μg/m3 (166) 166.0
 
July 5, 2020, 3 a.m. 16.4 ppb (15) 0.5 ppb (0) 18.3 ppb (17) 16.0 ppb (15) N/A 2.0 ppb (3) 34.0 ppb (26) 0.38 ppb (4) N/A 106.7 μg/m3 (177) 177.0
 
July 5, 2020, 2 a.m. 15.3 ppb (14) 0.5 ppb (0) 16.1 ppb (15) 15.0 ppb (14) N/A 2.0 ppb (3) 40.0 ppb (31) 0.35 ppb (4) N/A 80.6 μg/m3 (163) 163.0
 
July 5, 2020, 1 a.m. 9.8 ppb (9) 0.3 ppb (0) 10.9 ppb (10) 10.0 ppb (9) N/A 1.0 ppb (1) 49.0 ppb (38) 0.35 ppb (4) N/A 18.8 μg/m3 (64) 64.0
 
July 5, 2020, midnight 6.4 ppb (6) 0.3 ppb (0) 7.4 ppb (7) 6.0 ppb (6) N/A 0.0 ppb (0) 56.0 ppb (43) 0.28 ppb (3) N/A 10.8 μg/m3 (45) 45.0
 
July 4, 2020, 11 p.m. 5.5 ppb (5) 0.5 ppb (0) 6.2 ppb (6) 5.0 ppb (5) N/A 0.0 ppb (0) 57.0 ppb (44) 0.28 ppb (3) N/A 8.8 μg/m3 (37) 44.0
 
July 4, 2020, 10 p.m. 3.0 ppb (3) 0.3 ppb (0) 4.8 ppb (4) 3.0 ppb (3) N/A 0.0 ppb (0) 60.0 ppb (46) 0.24 ppb (3) N/A 12.1 μg/m3 (50) 50.0
 
July 4, 2020, 9 p.m. 2.4 ppb (2) 0.3 ppb (0) 4.6 ppb (4) 2.0 ppb (2) N/A 0.0 ppb (0) 61.0 ppb (47) 0.22 ppb (2) N/A 9.1 μg/m3 (38) 47.0
 
July 4, 2020, 8 p.m. 2.2 ppb (2) 0.3 ppb (0) 4.5 ppb (4) 2.0 ppb (2) N/A 0.0 ppb (0) 61.0 ppb (47) 0.22 ppb (2) N/A 14.6 μg/m3 (56) 56.0
 
July 4, 2020, 7 p.m. 2.4 ppb (2) 0.4 ppb (0) 4.5 ppb (4) 2.0 ppb (2) N/A 0.0 ppb (0) 60.0 ppb (46) 0.21 ppb (2) N/A 9.8 μg/m3 (41) 46.0
 
July 4, 2020, 6 p.m. 2.5 ppb (2) 0.4 ppb (0) 4.6 ppb (4) 2.0 ppb (2) N/A 0.0 ppb (0) 59.0 ppb (45) 0.19 ppb (2) N/A 11.4 μg/m3 (48) 48.0
 
July 4, 2020, 5 p.m. 1.9 ppb (2) 0.3 ppb (0) 4.4 ppb (4) 2.0 ppb (2) N/A 1.0 ppb (1) 60.0 ppb (46) 0.19 ppb (2) N/A 12.0 μg/m3 (50) 50.0
 
July 4, 2020, 4 p.m. 1.9 ppb (2) 0.3 ppb (0) 4.6 ppb (4) 2.0 ppb (2) N/A 1.0 ppb (1) 62.0 ppb (48) 0.2 ppb (2) N/A 10.9 μg/m3 (45) 48.0
 
July 4, 2020, 3 p.m. 2.8 ppb (3) 0.3 ppb (0) 5.6 ppb (5) 3.0 ppb (3) N/A 0.0 ppb (0) 57.0 ppb (44) 0.21 ppb (2) N/A 9.1 μg/m3 (38) 44.0
 
July 4, 2020, 2 p.m. 3.4 ppb (3) 0.4 ppb (0) 6.2 ppb (6) 3.0 ppb (3) N/A 0.0 ppb (0) 49.0 ppb (38) 0.21 ppb (2) N/A 11.9 μg/m3 (50) 50.0
 
July 4, 2020, 1 p.m. 5.8 ppb (5) 0.7 ppb (1) 8.4 ppb (8) 5.0 ppb (5) N/A 0.0 ppb (0) 42.0 ppb (32) 0.21 ppb (2) N/A 13.3 μg/m3 (53) 53.0
 
July 4, 2020, noon 12.4 ppb (11) 1.8 ppb (2) 14.5 ppb (13) 11.0 ppb (10) N/A 0.0 ppb (0) 31.0 ppb (24) 0.21 ppb (2) N/A 4.9 μg/m3 (20) 24.0
 
July 4, 2020, 11 a.m. 16.7 ppb (15) 1.0 ppb (1) 17.8 ppb (16) 16.0 ppb (15) N/A 0.0 ppb (0) 19.0 ppb (15) 0.27 ppb (3) N/A 13.1 μg/m3 (52) 52.0
 
July 4, 2020, 10 a.m. 17.7 ppb (16) 0.3 ppb (0) 18.7 ppb (17) 18.0 ppb (17) N/A 0.0 ppb (0) 16.0 ppb (12) 0.27 ppb (3) N/A 14.5 μg/m3 (55) 55.0
 
July 4, 2020, 9 a.m. 25.6 ppb (24) 0.8 ppb (1) 25.7 ppb (24) 25.0 ppb (23) N/A 0.0 ppb (0) 9.0 ppb (7) 0.41 ppb (5) N/A 14.2 μg/m3 (55) 55.0
 
July 4, 2020, 8 a.m. 15.7 ppb (15) 0.3 ppb (0) 16.9 ppb (16) 16.0 ppb (15) N/A 0.0 ppb (0) 21.0 ppb (16) 0.34 ppb (4) N/A 11.2 μg/m3 (47) 47.0
 
July 4, 2020, 7 a.m. 20.9 ppb (19) 0.3 ppb (0) 21.6 ppb (20) 21.0 ppb (19) N/A 0.0 ppb (0) 21.0 ppb (16) 0.38 ppb (4) N/A 15.7 μg/m3 (58) 58.0
 
July 4, 2020, 6 a.m. 25.2 ppb (23) 0.4 ppb (0) 26.6 ppb (25) 25.0 ppb (23) N/A 0.0 ppb (0) 16.0 ppb (12) 0.43 ppb (5) N/A 16.4 μg/m3 (59) 59.0
 
July 4, 2020, 5 a.m. 17.7 ppb (16) 0.4 ppb (0) 19.2 ppb (18) 18.0 ppb (17) N/A 0.0 ppb (0) 26.0 ppb (20) 0.37 ppb (4) N/A 12.6 μg/m3 (51) 51.0
 
July 4, 2020, 4 a.m. 14.0 ppb (13) 0.7 ppb (1) 14.2 ppb (13) 14.0 ppb (13) N/A 0.0 ppb (0) 31.0 ppb (24) 0.34 ppb (4) N/A 7.8 μg/m3 (32) 32.0
 
July 4, 2020, 3 a.m. 17.2 ppb (16) 0.3 ppb (0) 17.7 ppb (16) 17.0 ppb (16) N/A 0.0 ppb (0) 32.0 ppb (25) 0.36 ppb (4) N/A 12.8 μg/m3 (52) 52.0
 
July 4, 2020, 2 a.m. 11.7 ppb (11) 0.3 ppb (0) 12.1 ppb (11) 12.0 ppb (11) N/A 0.0 ppb (0) 40.0 ppb (31) 0.28 ppb (3) N/A 5.0 μg/m3 (21) 31.0
 
July 4, 2020, 1 a.m. 11.0 ppb (10) 0.3 ppb (0) 11.9 ppb (11) 11.0 ppb (10) N/A 0.0 ppb (0) 42.0 ppb (32) 0.3 ppb (3) N/A 8.9 μg/m3 (37) 37.0
 
July 4, 2020, midnight 8.9 ppb (8) 0.4 ppb (0) 9.6 ppb (9) 9.0 ppb (8) N/A 0.0 ppb (0) 48.0 ppb (37) 0.28 ppb (3) N/A 7.0 μg/m3 (29) 37.0
 
July 3, 2020, 11 p.m. 7.0 ppb (6) 0.7 ppb (1) 8.4 ppb (8) 7.0 ppb (6) N/A 0.0 ppb (0) 54.0 ppb (42) 0.26 ppb (3) N/A 10.4 μg/m3 (43) 43.0
 
July 3, 2020, 10 p.m. 5.7 ppb (5) 0.4 ppb (0) 7.2 ppb (7) 5.0 ppb (5) N/A 0.0 ppb (0) 54.0 ppb (42) 0.25 ppb (3) N/A 11.9 μg/m3 (50) 50.0
 
July 3, 2020, 9 p.m. 5.6 ppb (5) 0.4 ppb (0) 7.0 ppb (6) 5.0 ppb (5) N/A 0.0 ppb (0) 57.0 ppb (44) 0.25 ppb (3) N/A 12.8 μg/m3 (52) 52.0
 
July 3, 2020, 8 p.m. 4.9 ppb (5) 0.6 ppb (1) 6.9 ppb (6) 4.0 ppb (4) N/A 0.0 ppb (0) 57.0 ppb (44) 0.24 ppb (3) N/A 13.3 μg/m3 (53) 53.0
 
July 3, 2020, 7 p.m. 5.0 ppb (5) 0.8 ppb (1) 7.2 ppb (7) 4.0 ppb (4) N/A 0.0 ppb (0) 54.0 ppb (42) 0.24 ppb (3) N/A 20.1 μg/m3 (67) 67.0
 
July 3, 2020, 6 p.m. 5.4 ppb (5) 1.1 ppb (1) 7.4 ppb (7) 4.0 ppb (4) N/A 0.0 ppb (0) 54.0 ppb (42) 0.22 ppb (2) N/A 11.2 μg/m3 (47) 47.0
 
July 3, 2020, 5 p.m. 3.1 ppb (3) 0.4 ppb (0) 4.6 ppb (4) 3.0 ppb (3) N/A 0.0 ppb (0) 53.0 ppb (41) 0.22 ppb (2) N/A 17.4 μg/m3 (61) 61.0
 
July 3, 2020, 4 p.m. 3.3 ppb (3) 0.5 ppb (0) 5.7 ppb (5) 3.0 ppb (3) N/A 0.0 ppb (0) 50.0 ppb (38) 0.21 ppb (2) N/A 16.5 μg/m3 (60) 60.0
 
July 3, 2020, 3 p.m. 4.5 ppb (4) 0.7 ppb (1) 7.1 ppb (7) 4.0 ppb (4) N/A 0.0 ppb (0) 48.0 ppb (37) 0.2 ppb (2) N/A 16.3 μg/m3 (59) 59.0
 
July 3, 2020, 2 p.m. 5.5 ppb (5) 1.0 ppb (1) 8.1 ppb (8) 5.0 ppb (5) N/A 0.0 ppb (0) 44.0 ppb (34) 0.21 ppb (2) N/A 13.6 μg/m3 (53) 53.0
 
July 3, 2020, 1 p.m. 12.0 ppb (11) 2.7 ppb (3) 13.9 ppb (13) 9.0 ppb (8) N/A 0.0 ppb (0) 31.0 ppb (24) 0.24 ppb (3) N/A 18.0 μg/m3 (63) 63.0
 
July 3, 2020, noon 15.9 ppb (15) 3.3 ppb (3) 17.8 ppb (16) 13.0 ppb (12) N/A 0.0 ppb (0) 21.0 ppb (16) 0.23 ppb (3) N/A 15.2 μg/m3 (57) 57.0
 
July 3, 2020, 11 a.m. 14.6 ppb (14) 1.3 ppb (1) 15.7 ppb (15) 13.0 ppb (12) N/A 0.0 ppb (0) 18.0 ppb (14) 0.24 ppb (3) N/A 15.2 μg/m3 (57) 57.0
 
July 3, 2020, 10 a.m. 15.3 ppb (14) 0.3 ppb (0) 16.1 ppb (15) 15.0 ppb (14) N/A 0.0 ppb (0) 15.0 ppb (12) 0.27 ppb (3) N/A 12.0 μg/m3 (50) 50.0
 
July 3, 2020, 9 a.m. 15.2 ppb (14) 0.4 ppb (0) 15.9 ppb (15) 15.0 ppb (14) N/A 0.0 ppb (0) 16.0 ppb (12) 0.22 ppb (2) N/A 18.9 μg/m3 (65) 65.0
 
July 3, 2020, 8 a.m. 10.7 ppb (10) 0.3 ppb (0) 11.7 ppb (11) 11.0 ppb (10) N/A 0.0 ppb (0) 21.0 ppb (16) 0.23 ppb (3) N/A 17.1 μg/m3 (61) 61.0
 
July 3, 2020, 7 a.m. 12.0 ppb (11) 0.3 ppb (0) 12.3 ppb (11) 12.0 ppb (11) N/A 0.0 ppb (0) 25.0 ppb (19) 0.24 ppb (3) N/A 11.1 μg/m3 (46) 46.0
 
July 3, 2020, 6 a.m. 8.9 ppb (8) 0.3 ppb (0) 9.7 ppb (9) 9.0 ppb (8) N/A 0.0 ppb (0) 28.0 ppb (22) 0.25 ppb (3) N/A 11.0 μg/m3 (46) 46.0
 
July 3, 2020, 5 a.m. 6.1 ppb (6) 0.3 ppb (0) 6.8 ppb (6) 6.0 ppb (6) N/A 0.0 ppb (0) 31.0 ppb (24) 0.25 ppb (3) N/A 12.9 μg/m3 (52) 52.0
 
July 3, 2020, 4 a.m. 10.7 ppb (10) 0.3 ppb (0) 10.9 ppb (10) 11.0 ppb (10) N/A 0.0 ppb (0) 28.0 ppb (22) 0.25 ppb (3) N/A 14.3 μg/m3 (55) 55.0
 
July 3, 2020, 3 a.m. 17.6 ppb (16) 0.7 ppb (1) 18.8 ppb (17) 17.0 ppb (16) N/A 0.0 ppb (0) 20.0 ppb (15) 0.35 ppb (4) N/A 25.1 μg/m3 (78) 78.0
 
July 3, 2020, 2 a.m. 16.9 ppb (16) 0.5 ppb (0) 17.5 ppb (16) 17.0 ppb (16) N/A 0.0 ppb (0) 25.0 ppb (19) 0.36 ppb (4) N/A 15.6 μg/m3 (58) 58.0
 
July 3, 2020, 1 a.m. 6.6 ppb (6) 0.4 ppb (0) 8.0 ppb (7) 7.0 ppb (6) N/A 0.0 ppb (0) 39.0 ppb (30) 0.25 ppb (3) N/A 10.0 μg/m3 (42) 42.0
 
July 3, 2020, midnight 6.2 ppb (6) 0.7 ppb (1) 6.4 ppb (6) 6.0 ppb (6) N/A 0.0 ppb (0) 41.0 ppb (32) 0.21 ppb (2) N/A 1.7 μg/m3 (7) 32.0
 
July 2, 2020, 11 p.m. 4.2 ppb (4) 0.4 ppb (0) 5.9 ppb (5) 4.0 ppb (4) N/A 0.0 ppb (0) 44.0 ppb (34) 0.21 ppb (2) N/A 14.5 μg/m3 (55) 55.0