ID: 149

AQSQID: 060371103

Site Name: Los Angeles - N. Main Street

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

Updated: May 12, 2021, 4:45 a.m.

Location: Los Angeles (Central City E), CA

Reporting: True, Located: True

Current AQI: 55.0

Los Angeles (Central City E) CA, US: 34.066429, -118.226755

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
May 12, 2021, 3 a.m. 4.0 ppb (4) 0.1 ppb (1) 5.1 ppb (5) 4.0 ppb (4) 5.0 ppb (5) 0.0 ppb (0) 44.0 ppb (41) 0.16 ppb (3) 18.0 μg/m3 (17) 14.0 μg/m3 (55) 55.0
 
May 12, 2021, 2 a.m. 3.9 ppb (4) 0.1 ppb (1) 5.5 ppb (6) 4.0 ppb (4) 5.4 ppb (6) 0.0 ppb (0) 47.0 ppb (44) 0.19 ppb (3) 22.0 μg/m3 (21) 14.0 μg/m3 (55) 55.0
 
May 12, 2021, 1 a.m. 4.5 ppb (5) 0.5 ppb (1) 5.4 ppb (6) 4.0 ppb (4) 5.0 ppb (5) 0.0 ppb (0) 50.0 ppb (47) 0.22 ppb (3) 26.0 μg/m3 (25) 16.0 μg/m3 (60) 60.0
 
May 12, 2021, midnight 5.1 ppb (5) 0.6 ppb (1) 6.3 ppb (6) 5.0 ppb (5) 5.7 ppb (6) 0.0 ppb (0) 54.0 ppb (50) 0.23 ppb (3) 26.0 μg/m3 (25) 16.0 μg/m3 (60) 60.0
 
May 11, 2021, 11 p.m. 6.3 ppb (6) 0.8 ppb (1) 7.9 ppb (8) 5.0 ppb (5) 7.0 ppb (7) 0.0 ppb (0) 58.0 ppb (61) 0.25 ppb (3) 26.0 μg/m3 (25) 19.0 μg/m3 (66) 66.0
 
May 11, 2021, 10 p.m. 6.4 ppb (7) 0.8 ppb (1) 9.6 ppb (10) 6.0 ppb (6) 8.8 ppb (9) 0.0 ppb (0) 60.0 ppb (68) 0.24 ppb (3) 34.0 μg/m3 (32) 17.0 μg/m3 (62) 68.0
 
May 11, 2021, 9 p.m. 7.5 ppb (8) 1.0 ppb (1) 9.9 ppb (10) 6.0 ppb (6) 8.8 ppb (9) 0.0 ppb (0) 58.0 ppb (61) 0.43 ppb (5) 29.0 μg/m3 (27) N/A 61.0
 
May 11, 2021, 8 p.m. 12.0 ppb (12) 2.3 ppb (3) 13.0 ppb (13) 10.0 ppb (10) 10.6 ppb (10) 0.0 ppb (0) 50.0 ppb (47) 0.39 ppb (5) 36.0 μg/m3 (34) N/A 47.0
 
May 11, 2021, 7 p.m. 13.6 ppb (13) 2.9 ppb (3) 14.7 ppb (14) 11.0 ppb (11) 11.6 ppb (11) 0.0 ppb (0) 46.0 ppb (43) 0.31 ppb (4) 40.0 μg/m3 (38) N/A 43.0
 
May 11, 2021, 6 p.m. 16.9 ppb (16) 3.6 ppb (4) 16.5 ppb (16) 13.0 ppb (13) 12.7 ppb (12) 0.0 ppb (0) 36.0 ppb (34) 0.33 ppb (4) N/A N/A 34.0
 
May 11, 2021, 5 p.m. 22.6 ppb (22) 4.0 ppb (4) 21.9 ppb (21) 19.0 ppb (18) 18.0 ppb (17) 0.0 ppb (0) 26.0 ppb (25) 0.36 ppb (5) N/A N/A 25.0
 
May 11, 2021, 4 p.m. 23.3 ppb (22) 4.1 ppb (4) 22.3 ppb (22) 19.0 ppb (18) 18.3 ppb (18) 0.0 ppb (0) 21.0 ppb (20) 0.35 ppb (4) N/A N/A 22.0
 
May 11, 2021, 3 p.m. 20.0 ppb (19) 2.8 ppb (3) 18.5 ppb (18) 17.0 ppb (17) 16.1 ppb (16) 0.0 ppb (0) 22.0 ppb (21) 0.32 ppb (4) 43.0 μg/m3 (40) 23.0 μg/m3 (74) 74.0
 
May 11, 2021, 2 p.m. 17.4 ppb (17) 1.5 ppb (2) 15.1 ppb (15) 16.0 ppb (16) 13.9 ppb (14) 0.0 ppb (0) 24.0 ppb (23) 0.33 ppb (4) 35.0 μg/m3 (33) 17.0 μg/m3 (62) 62.0
 
May 11, 2021, 1 p.m. 15.0 ppb (15) 1.3 ppb (2) 13.4 ppb (13) 14.0 ppb (14) 12.1 ppb (12) 0.0 ppb (0) 25.0 ppb (24) 0.31 ppb (4) 36.0 μg/m3 (34) 22.0 μg/m3 (72) 72.0
 
May 11, 2021, noon 9.2 ppb (9) 0.4 ppb (1) 7.7 ppb (8) 9.0 ppb (9) 7.6 ppb (8) 0.0 ppb (0) 30.0 ppb (28) 0.28 ppb (4) 35.0 μg/m3 (33) 24.0 μg/m3 (77) 77.0
 
May 11, 2021, 11 a.m. 6.3 ppb (6) 0.4 ppb (1) 5.9 ppb (6) 6.0 ppb (6) 5.6 ppb (6) 0.0 ppb (0) 35.0 ppb (33) 0.25 ppb (3) 32.0 μg/m3 (30) 22.0 μg/m3 (72) 72.0
 
May 11, 2021, 10 a.m. 4.6 ppb (5) 0.3 ppb (1) 4.2 ppb (4) 4.0 ppb (4) 4.2 ppb (4) 0.0 ppb (0) 36.0 ppb (34) 0.21 ppb (3) 31.0 μg/m3 (29) 15.0 μg/m3 (58) 58.0
 
May 11, 2021, 9 a.m. 4.1 ppb (4) 0.1 ppb (1) 3.9 ppb (4) 4.0 ppb (4) 3.8 ppb (4) 0.0 ppb (0) 37.0 ppb (35) 0.22 ppb (3) 25.0 μg/m3 (24) 15.0 μg/m3 (58) 58.0
 
May 11, 2021, 8 a.m. 4.8 ppb (5) 0.2 ppb (1) 5.2 ppb (5) 5.0 ppb (5) 5.1 ppb (5) 0.0 ppb (0) 36.0 ppb (34) 0.2 ppb (3) 29.0 μg/m3 (27) 15.0 μg/m3 (58) 58.0
 
May 11, 2021, 7 a.m. 3.7 ppb (4) 0.2 ppb (1) 4.1 ppb (4) 3.0 ppb (3) 4.0 ppb (4) 0.0 ppb (0) 38.0 ppb (36) 0.21 ppb (3) 27.0 μg/m3 (25) 18.0 μg/m3 (64) 64.0
 
May 11, 2021, 6 a.m. 3.1 ppb (3) 0.2 ppb (1) 3.8 ppb (4) 3.0 ppb (3) 3.7 ppb (4) 0.0 ppb (0) 39.0 ppb (37) 0.18 ppb (3) 21.0 μg/m3 (20) 17.0 μg/m3 (62) 62.0
 
May 11, 2021, 5 a.m. 5.6 ppb (6) 0.2 ppb (1) 5.8 ppb (6) 5.0 ppb (5) 5.7 ppb (6) 0.0 ppb (0) 35.0 ppb (33) 0.23 ppb (3) 33.0 μg/m3 (31) 19.0 μg/m3 (66) 66.0
 
May 11, 2021, 4 a.m. 5.5 ppb (6) 0.2 ppb (1) 5.8 ppb (6) 5.0 ppb (5) 5.7 ppb (6) 0.0 ppb (0) 37.0 ppb (35) 0.25 ppb (3) 27.0 μg/m3 (25) 14.0 μg/m3 (55) 55.0
 
May 11, 2021, 3 a.m. 6.7 ppb (7) 0.2 ppb (1) 7.0 ppb (7) 6.0 ppb (6) 6.9 ppb (7) 0.0 ppb (0) 38.0 ppb (36) 0.25 ppb (3) 37.0 μg/m3 (35) 16.0 μg/m3 (60) 60.0
 
May 11, 2021, 2 a.m. 7.0 ppb (7) 0.3 ppb (1) 7.5 ppb (8) 7.0 ppb (7) 7.4 ppb (7) 0.0 ppb (0) 42.0 ppb (39) 0.25 ppb (3) 36.0 μg/m3 (34) 18.0 μg/m3 (64) 64.0
 
May 11, 2021, 1 a.m. 6.5 ppb (7) 0.4 ppb (1) 7.2 ppb (7) 6.0 ppb (6) 6.8 ppb (7) 0.0 ppb (0) 45.0 ppb (42) 0.24 ppb (3) 34.0 μg/m3 (32) 18.0 μg/m3 (64) 64.0
 
May 11, 2021, midnight 7.9 ppb (8) 0.7 ppb (1) 8.5 ppb (9) 7.0 ppb (7) 7.8 ppb (8) 0.0 ppb (0) 46.0 ppb (43) 0.23 ppb (3) 37.0 μg/m3 (35) 17.0 μg/m3 (62) 62.0
 
May 10, 2021, 11 p.m. 10.2 ppb (10) 1.1 ppb (2) 11.0 ppb (11) 9.0 ppb (9) 9.7 ppb (10) 1.0 ppb (2) 46.0 ppb (43) 0.24 ppb (3) 37.0 μg/m3 (35) 20.0 μg/m3 (68) 68.0
 
May 10, 2021, 10 p.m. 11.3 ppb (11) 1.7 ppb (2) 11.7 ppb (12) 10.0 ppb (10) 9.9 ppb (10) 0.0 ppb (0) 45.0 ppb (42) 0.24 ppb (3) 41.0 μg/m3 (38) 19.0 μg/m3 (66) 66.0
 
May 10, 2021, 9 p.m. 11.8 ppb (12) 1.9 ppb (2) 11.9 ppb (12) 10.0 ppb (10) 9.8 ppb (10) 0.0 ppb (0) 42.0 ppb (39) 0.26 ppb (4) 38.0 μg/m3 (36) 16.0 μg/m3 (60) 60.0
 
May 10, 2021, 8 p.m. 12.0 ppb (12) 1.4 ppb (2) 12.2 ppb (12) 11.0 ppb (11) 10.8 ppb (11) 0.0 ppb (0) 43.0 ppb (40) 0.25 ppb (3) 33.0 μg/m3 (31) 18.0 μg/m3 (64) 64.0
 
May 10, 2021, 7 p.m. 13.1 ppb (13) 2.3 ppb (3) 12.0 ppb (12) 11.0 ppb (11) 9.6 ppb (10) 0.0 ppb (0) 44.0 ppb (41) 0.24 ppb (3) 33.0 μg/m3 (31) 13.0 μg/m3 (53) 53.0
 
May 10, 2021, 6 p.m. 12.4 ppb (12) 1.7 ppb (2) 11.6 ppb (11) 11.0 ppb (11) 10.3 ppb (10) 0.0 ppb (0) 43.0 ppb (40) 0.26 ppb (4) 30.0 μg/m3 (28) 15.0 μg/m3 (58) 58.0
 
May 10, 2021, 5 p.m. 14.0 ppb (14) 1.6 ppb (2) 13.1 ppb (13) 12.0 ppb (12) 11.6 ppb (11) 0.0 ppb (0) 40.0 ppb (38) 0.25 ppb (3) 27.0 μg/m3 (25) 10.0 μg/m3 (42) 42.0
 
May 10, 2021, 4 p.m. 13.9 ppb (14) 2.2 ppb (3) 12.8 ppb (13) 12.0 ppb (12) 10.5 ppb (10) 0.0 ppb (0) 39.0 ppb (37) 0.28 ppb (4) 30.0 μg/m3 (28) 15.0 μg/m3 (58) 58.0
 
May 10, 2021, 3 p.m. 12.2 ppb (12) 1.1 ppb (2) 10.9 ppb (11) 11.0 ppb (11) 9.9 ppb (10) 0.0 ppb (0) 39.0 ppb (37) 0.3 ppb (4) 32.0 μg/m3 (30) 14.0 μg/m3 (55) 55.0
 
May 10, 2021, 2 p.m. 12.9 ppb (13) 1.1 ppb (2) 11.1 ppb (11) 12.0 ppb (12) 10.0 ppb (10) 0.0 ppb (0) 38.0 ppb (36) 0.31 ppb (4) 31.0 μg/m3 (29) 15.0 μg/m3 (58) 58.0
 
May 10, 2021, 1 p.m. 12.6 ppb (12) 0.6 ppb (1) 10.4 ppb (10) 12.0 ppb (12) 9.7 ppb (10) 0.0 ppb (0) 38.0 ppb (36) 0.27 ppb (4) 28.0 μg/m3 (26) 16.0 μg/m3 (60) 60.0
 
May 10, 2021, noon 9.0 ppb (9) 0.5 ppb (1) 7.4 ppb (7) 9.0 ppb (9) 7.1 ppb (7) 0.0 ppb (0) 39.0 ppb (37) 0.25 ppb (3) 28.0 μg/m3 (26) 13.0 μg/m3 (53) 53.0
 
May 10, 2021, 11 a.m. 4.7 ppb (5) 0.2 ppb (1) 4.8 ppb (5) 5.0 ppb (5) 4.7 ppb (5) 0.0 ppb (0) 44.0 ppb (41) 0.21 ppb (3) 29.0 μg/m3 (27) 16.0 μg/m3 (60) 60.0
 
May 10, 2021, 10 a.m. 5.0 ppb (5) 0.2 ppb (1) 5.1 ppb (5) 5.0 ppb (5) 5.0 ppb (5) 0.0 ppb (0) 41.0 ppb (38) 0.19 ppb (3) 34.0 μg/m3 (32) 17.0 μg/m3 (62) 62.0
 
May 10, 2021, 9 a.m. 7.9 ppb (8) 0.2 ppb (1) 7.7 ppb (8) 8.0 ppb (8) 7.6 ppb (8) 0.0 ppb (0) 40.0 ppb (38) 0.24 ppb (3) 33.0 μg/m3 (31) 21.0 μg/m3 (70) 70.0
 
May 10, 2021, 8 a.m. 7.0 ppb (7) 0.2 ppb (1) 7.6 ppb (8) 7.0 ppb (7) 7.6 ppb (8) 0.0 ppb (0) 42.0 ppb (39) 0.21 ppb (3) 38.0 μg/m3 (36) 19.0 μg/m3 (66) 66.0
 
May 10, 2021, 7 a.m. 5.0 ppb (5) 0.1 ppb (1) 6.3 ppb (6) 5.0 ppb (5) 6.2 ppb (6) 0.0 ppb (0) 47.0 ppb (44) 0.22 ppb (3) 36.0 μg/m3 (34) 21.0 μg/m3 (70) 70.0
 
May 10, 2021, 6 a.m. 5.2 ppb (5) 0.2 ppb (1) 6.0 ppb (6) 5.0 ppb (5) 6.0 ppb (6) 0.0 ppb (0) 45.0 ppb (42) 0.2 ppb (3) 35.0 μg/m3 (33) 25.0 μg/m3 (79) 79.0
 
May 10, 2021, 5 a.m. 4.8 ppb (5) 0.1 ppb (1) 5.2 ppb (5) 5.0 ppb (5) 5.2 ppb (5) 0.0 ppb (0) 45.0 ppb (42) 0.21 ppb (3) 34.0 μg/m3 (32) 21.0 μg/m3 (70) 70.0
 
May 10, 2021, 4 a.m. 3.8 ppb (4) 0.1 ppb (1) 4.2 ppb (4) 4.0 ppb (4) 4.1 ppb (4) 0.0 ppb (0) 48.0 ppb (45) 0.24 ppb (3) 31.0 μg/m3 (29) 17.0 μg/m3 (62) 62.0
 
May 10, 2021, 3 a.m. 3.5 ppb (4) 0.1 ppb (1) 3.7 ppb (4) 3.0 ppb (3) 3.7 ppb (4) 0.0 ppb (0) 50.0 ppb (47) 0.2 ppb (3) 27.0 μg/m3 (25) 16.0 μg/m3 (60) 60.0
 
May 10, 2021, 2 a.m. 3.9 ppb (4) 0.2 ppb (1) 3.5 ppb (4) 4.0 ppb (4) 3.4 ppb (4) 0.0 ppb (0) 55.0 ppb (51) 0.21 ppb (3) 34.0 μg/m3 (32) 26.0 μg/m3 (81) 81.0
 
May 10, 2021, 1 a.m. 3.7 ppb (4) 0.2 ppb (1) 3.5 ppb (4) 3.0 ppb (3) 3.2 ppb (4) 0.0 ppb (0) 51.0 ppb (48) 0.21 ppb (3) 34.0 μg/m3 (32) 13.0 μg/m3 (53) 53.0
 
May 10, 2021, midnight 4.2 ppb (4) 0.4 ppb (1) 3.7 ppb (4) 4.0 ppb (4) 3.2 ppb (4) 0.0 ppb (0) 54.0 ppb (50) 0.2 ppb (3) 36.0 μg/m3 (34) 19.0 μg/m3 (66) 66.0
 
May 9, 2021, 11 p.m. 4.2 ppb (4) 0.5 ppb (1) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 59.0 ppb (65) 0.21 ppb (3) 36.0 μg/m3 (34) 21.0 μg/m3 (70) 70.0
 
May 9, 2021, 10 p.m. 4.5 ppb (5) 0.5 ppb (1) 5.4 ppb (6) 4.0 ppb (4) 4.9 ppb (5) 0.0 ppb (0) 60.0 ppb (68) 0.2 ppb (3) 39.0 μg/m3 (37) 24.0 μg/m3 (77) 77.0
 
May 9, 2021, 9 p.m. 6.3 ppb (6) 0.9 ppb (1) 7.2 ppb (7) 5.0 ppb (5) 6.3 ppb (6) 1.0 ppb (2) 59.0 ppb (65) 0.23 ppb (3) 46.0 μg/m3 (43) 24.0 μg/m3 (77) 77.0
 
May 9, 2021, 8 p.m. 6.7 ppb (7) 1.0 ppb (1) 7.7 ppb (8) 6.0 ppb (6) 6.6 ppb (7) 0.0 ppb (0) 56.0 ppb (55) 0.25 ppb (3) 44.0 μg/m3 (41) 22.0 μg/m3 (72) 72.0
 
May 9, 2021, 7 p.m. 8.3 ppb (8) 1.7 ppb (2) 9.0 ppb (9) 7.0 ppb (7) 7.2 ppb (7) 0.0 ppb (0) 47.0 ppb (44) 0.26 ppb (4) 34.0 μg/m3 (32) 16.0 μg/m3 (60) 60.0
 
May 9, 2021, 6 p.m. 8.1 ppb (8) 1.5 ppb (2) 8.3 ppb (8) 7.0 ppb (7) 6.8 ppb (7) 0.0 ppb (0) 44.0 ppb (41) 0.25 ppb (3) 32.0 μg/m3 (30) 16.0 μg/m3 (60) 60.0
 
May 9, 2021, 5 p.m. 7.1 ppb (7) 0.8 ppb (1) 7.3 ppb (7) 6.0 ppb (6) 6.4 ppb (7) 0.0 ppb (0) 42.0 ppb (39) 0.25 ppb (3) 34.0 μg/m3 (32) 14.0 μg/m3 (55) 55.0
 
May 9, 2021, 4 p.m. 6.4 ppb (7) 0.5 ppb (1) 6.4 ppb (7) 6.0 ppb (6) 6.0 ppb (6) 0.0 ppb (0) 41.0 ppb (38) 0.23 ppb (3) 34.0 μg/m3 (32) 16.0 μg/m3 (60) 60.0
 
May 9, 2021, 3 p.m. 4.9 ppb (5) 0.3 ppb (1) 4.9 ppb (5) 5.0 ppb (5) 4.7 ppb (5) 0.0 ppb (0) 42.0 ppb (39) 0.22 ppb (3) 29.0 μg/m3 (27) 16.0 μg/m3 (60) 60.0
 
May 9, 2021, 2 p.m. 5.7 ppb (6) 0.2 ppb (1) 5.3 ppb (5) 5.0 ppb (5) 5.1 ppb (5) 0.0 ppb (0) 40.0 ppb (38) 0.22 ppb (3) 29.0 μg/m3 (27) 19.0 μg/m3 (66) 66.0
 
May 9, 2021, 1 p.m. 6.6 ppb (7) 0.3 ppb (1) 5.3 ppb (5) 6.0 ppb (6) 5.2 ppb (5) 0.0 ppb (0) 37.0 ppb (35) 0.24 ppb (3) 31.0 μg/m3 (29) 16.0 μg/m3 (60) 60.0
 
May 9, 2021, noon 10.3 ppb (10) 0.8 ppb (1) 8.5 ppb (9) 10.0 ppb (10) 8.0 ppb (8) 0.0 ppb (0) 33.0 ppb (31) 0.23 ppb (3) 26.0 μg/m3 (25) 18.0 μg/m3 (64) 64.0
 
May 9, 2021, 11 a.m. 11.1 ppb (11) 0.9 ppb (1) 8.9 ppb (9) 10.0 ppb (10) 8.6 ppb (9) 0.0 ppb (0) 30.0 ppb (28) 0.26 ppb (4) 33.0 μg/m3 (31) 18.0 μg/m3 (64) 64.0
 
May 9, 2021, 10 a.m. 11.2 ppb (11) 0.4 ppb (1) 11.3 ppb (11) 11.0 ppb (11) 11.3 ppb (11) 0.0 ppb (0) 29.0 ppb (27) 0.28 ppb (4) 32.0 μg/m3 (30) 17.0 μg/m3 (62) 62.0
 
May 9, 2021, 9 a.m. 12.7 ppb (12) 0.3 ppb (1) 12.5 ppb (12) 12.0 ppb (12) 12.4 ppb (12) 0.0 ppb (0) 25.0 ppb (24) 0.4 ppb (5) 35.0 μg/m3 (33) 21.0 μg/m3 (70) 70.0
 
May 9, 2021, 8 a.m. 10.2 ppb (10) 0.4 ppb (1) 12.1 ppb (12) 10.0 ppb (10) 12.0 ppb (12) 0.0 ppb (0) 28.0 ppb (26) 0.38 ppb (5) 34.0 μg/m3 (32) 19.0 μg/m3 (66) 66.0
 
May 9, 2021, 7 a.m. 13.7 ppb (13) 0.3 ppb (1) 14.0 ppb (14) 13.0 ppb (13) 13.9 ppb (14) 0.0 ppb (0) 26.0 ppb (25) 0.5 ppb (6) 30.0 μg/m3 (28) 14.0 μg/m3 (55) 55.0
 
May 9, 2021, 6 a.m. 11.4 ppb (11) 0.3 ppb (1) 11.7 ppb (12) 11.0 ppb (11) 11.6 ppb (11) 0.0 ppb (0) 29.0 ppb (27) 0.4 ppb (5) 31.0 μg/m3 (29) 19.0 μg/m3 (66) 66.0
 
May 9, 2021, 5 a.m. 6.4 ppb (7) 0.2 ppb (1) 7.7 ppb (8) 6.0 ppb (6) 7.7 ppb (8) 0.0 ppb (0) 41.0 ppb (38) 0.27 ppb (4) 28.0 μg/m3 (26) 19.0 μg/m3 (66) 66.0
 
May 9, 2021, 4 a.m. 5.3 ppb (5) 0.1 ppb (1) 6.0 ppb (6) 5.0 ppb (5) 5.9 ppb (6) 0.0 ppb (0) 45.0 ppb (42) 0.27 ppb (4) 28.0 μg/m3 (26) 18.0 μg/m3 (64) 64.0
 
May 9, 2021, 3 a.m. 5.7 ppb (6) 0.1 ppb (1) 6.6 ppb (7) 6.0 ppb (6) 6.5 ppb (7) 0.0 ppb (0) 49.0 ppb (46) 0.25 ppb (3) 32.0 μg/m3 (30) 19.0 μg/m3 (66) 66.0
 
May 9, 2021, 2 a.m. 6.1 ppb (6) 0.2 ppb (1) 7.0 ppb (7) 6.0 ppb (6) 6.9 ppb (7) 0.0 ppb (0) 52.0 ppb (49) 0.23 ppb (3) 32.0 μg/m3 (30) 22.0 μg/m3 (72) 72.0
 
May 9, 2021, 1 a.m. 5.7 ppb (6) 0.4 ppb (1) 6.4 ppb (7) 5.0 ppb (5) 6.0 ppb (6) 0.0 ppb (0) 52.0 ppb (49) 0.22 ppb (3) 31.0 μg/m3 (29) 18.0 μg/m3 (64) 64.0
 
May 9, 2021, midnight 4.3 ppb (5) 0.4 ppb (1) 4.9 ppb (5) 4.0 ppb (4) 4.4 ppb (5) 0.0 ppb (0) 53.0 ppb (50) 0.2 ppb (3) 30.0 μg/m3 (28) 18.0 μg/m3 (64) 64.0
 
May 8, 2021, 11 p.m. 5.1 ppb (5) 0.7 ppb (1) 5.8 ppb (6) 4.0 ppb (4) 5.0 ppb (5) 0.0 ppb (0) 52.0 ppb (49) 0.2 ppb (3) 33.0 μg/m3 (31) 18.0 μg/m3 (64) 64.0
 
May 8, 2021, 10 p.m. 5.2 ppb (5) 0.7 ppb (1) 5.9 ppb (6) 4.0 ppb (4) 5.2 ppb (5) 0.0 ppb (0) 55.0 ppb (51) 0.21 ppb (3) 38.0 μg/m3 (36) 16.0 μg/m3 (60) 60.0
 
May 8, 2021, 9 p.m. 6.5 ppb (7) 0.9 ppb (1) 7.2 ppb (7) 6.0 ppb (6) 6.3 ppb (6) 1.0 ppb (2) 57.0 ppb (58) 0.23 ppb (3) 34.0 μg/m3 (32) 16.0 μg/m3 (60) 60.0
 
May 8, 2021, 8 p.m. 8.7 ppb (9) 1.4 ppb (2) 9.4 ppb (9) 7.0 ppb (7) 7.8 ppb (8) 1.0 ppb (2) 55.0 ppb (51) 0.25 ppb (3) 39.0 μg/m3 (37) 17.0 μg/m3 (62) 62.0
 
May 8, 2021, 7 p.m. 8.9 ppb (9) 1.6 ppb (2) 9.4 ppb (9) 7.0 ppb (7) 7.7 ppb (8) 0.0 ppb (0) 51.0 ppb (48) 0.26 ppb (4) 38.0 μg/m3 (36) 19.0 μg/m3 (66) 66.0
 
May 8, 2021, 6 p.m. 8.0 ppb (8) 1.5 ppb (2) 8.5 ppb (9) 6.0 ppb (6) 6.9 ppb (7) 0.0 ppb (0) 49.0 ppb (46) 0.25 ppb (3) 28.0 μg/m3 (26) 18.0 μg/m3 (64) 64.0
 
May 8, 2021, 5 p.m. 10.0 ppb (10) 1.7 ppb (2) 9.9 ppb (10) 8.0 ppb (8) 8.0 ppb (8) 0.0 ppb (0) 41.0 ppb (38) 0.24 ppb (3) 28.0 μg/m3 (26) 17.0 μg/m3 (62) 62.0
 
May 8, 2021, 4 p.m. 8.0 ppb (8) 0.9 ppb (1) 8.0 ppb (8) 7.0 ppb (7) 7.0 ppb (7) 0.0 ppb (0) 39.0 ppb (37) 0.23 ppb (3) 21.0 μg/m3 (20) 15.0 μg/m3 (58) 58.0
 
May 8, 2021, 3 p.m. 8.4 ppb (8) 1.0 ppb (1) 7.9 ppb (8) 7.0 ppb (7) 6.9 ppb (7) 0.0 ppb (0) 38.0 ppb (36) 0.23 ppb (3) 23.0 μg/m3 (22) 14.0 μg/m3 (55) 55.0
 
May 8, 2021, 2 p.m. 8.6 ppb (9) 1.0 ppb (1) 7.3 ppb (7) 8.0 ppb (8) 6.5 ppb (7) 0.0 ppb (0) 36.0 ppb (34) 0.22 ppb (3) 20.0 μg/m3 (19) 12.0 μg/m3 (50) 50.0
 
May 8, 2021, 1 p.m. 10.4 ppb (10) 0.4 ppb (1) 8.3 ppb (8) 10.0 ppb (10) 7.9 ppb (8) 0.0 ppb (0) 35.0 ppb (33) 0.24 ppb (3) 21.0 μg/m3 (20) 12.0 μg/m3 (50) 50.0
 
May 8, 2021, noon 10.2 ppb (10) 0.2 ppb (1) 8.7 ppb (9) 10.0 ppb (10) 8.7 ppb (9) 0.0 ppb (0) 34.0 ppb (32) 0.23 ppb (3) 24.0 μg/m3 (23) 14.0 μg/m3 (55) 55.0
 
May 8, 2021, 11 a.m. 6.8 ppb (7) 0.0 ppb (0) 6.4 ppb (7) 7.0 ppb (7) 6.3 ppb (6) 0.0 ppb (0) 37.0 ppb (35) 0.22 ppb (3) 20.0 μg/m3 (19) 15.0 μg/m3 (58) 58.0
 
May 8, 2021, 10 a.m. 6.6 ppb (7) 0.1 ppb (1) 6.7 ppb (7) 7.0 ppb (7) 6.6 ppb (7) 0.0 ppb (0) 38.0 ppb (36) 0.21 ppb (3) 20.0 μg/m3 (19) 17.0 μg/m3 (62) 62.0
 
May 8, 2021, 9 a.m. 10.7 ppb (11) 0.2 ppb (1) 8.9 ppb (9) 11.0 ppb (11) 8.8 ppb (9) 0.0 ppb (0) 32.0 ppb (30) 0.27 ppb (4) 28.0 μg/m3 (26) 16.0 μg/m3 (60) 60.0
 
May 8, 2021, 8 a.m. 11.6 ppb (11) 0.3 ppb (1) 13.0 ppb (13) 11.0 ppb (11) 12.9 ppb (13) 0.0 ppb (0) 29.0 ppb (27) 0.29 ppb (4) 25.0 μg/m3 (24) 21.0 μg/m3 (70) 70.0
 
May 8, 2021, 7 a.m. 12.9 ppb (13) 0.2 ppb (1) 13.6 ppb (13) 13.0 ppb (13) 13.5 ppb (13) 0.0 ppb (0) 31.0 ppb (29) 0.28 ppb (4) 29.0 μg/m3 (27) 21.0 μg/m3 (70) 70.0
 
May 8, 2021, 6 a.m. 11.2 ppb (11) 0.2 ppb (1) 12.4 ppb (12) 11.0 ppb (11) 12.3 ppb (12) 0.0 ppb (0) 33.0 ppb (31) 0.24 ppb (3) 20.0 μg/m3 (19) 16.0 μg/m3 (60) 60.0
 
May 8, 2021, 5 a.m. 8.8 ppb (9) 0.2 ppb (1) 10.5 ppb (10) 9.0 ppb (9) 10.4 ppb (10) 0.0 ppb (0) 34.0 ppb (32) 0.27 ppb (4) 16.0 μg/m3 (15) 14.0 μg/m3 (55) 55.0
 
May 8, 2021, 4 a.m. 6.3 ppb (6) 0.2 ppb (1) 7.0 ppb (7) 6.0 ppb (6) 6.8 ppb (7) 0.0 ppb (0) 37.0 ppb (35) 0.28 ppb (4) 17.0 μg/m3 (16) 11.0 μg/m3 (46) 46.0
 
May 8, 2021, 3 a.m. 4.8 ppb (5) 0.2 ppb (1) 5.0 ppb (5) 5.0 ppb (5) 4.9 ppb (5) 0.0 ppb (0) 41.0 ppb (38) 0.24 ppb (3) 15.0 μg/m3 (14) 11.0 μg/m3 (46) 46.0
 
May 8, 2021, 2 a.m. 5.0 ppb (5) 0.2 ppb (1) 5.5 ppb (6) 5.0 ppb (5) 5.3 ppb (5) 0.0 ppb (0) 44.0 ppb (41) 0.22 ppb (3) 22.0 μg/m3 (21) 11.0 μg/m3 (46) 46.0
 
May 8, 2021, 1 a.m. 6.0 ppb (6) 0.5 ppb (1) 6.5 ppb (7) 6.0 ppb (6) 6.0 ppb (6) 0.0 ppb (0) 49.0 ppb (46) 0.22 ppb (3) 18.0 μg/m3 (17) 15.0 μg/m3 (58) 58.0
 
May 8, 2021, midnight 5.9 ppb (6) 0.7 ppb (1) 6.5 ppb (7) 5.0 ppb (5) 5.7 ppb (6) 0.0 ppb (0) 51.0 ppb (48) 0.22 ppb (3) 18.0 μg/m3 (17) 17.0 μg/m3 (62) 62.0
 
May 7, 2021, 11 p.m. 5.7 ppb (6) 0.9 ppb (1) 6.2 ppb (6) 5.0 ppb (5) 5.3 ppb (5) 0.0 ppb (0) 52.0 ppb (49) 0.21 ppb (3) 24.0 μg/m3 (23) 14.0 μg/m3 (55) 55.0
 
May 7, 2021, 10 p.m. 5.9 ppb (6) 0.9 ppb (1) 6.4 ppb (7) 5.0 ppb (5) 5.4 ppb (6) 0.0 ppb (0) 50.0 ppb (47) 0.21 ppb (3) 24.0 μg/m3 (23) 9.0 μg/m3 (38) 47.0
 
May 7, 2021, 9 p.m. 10.0 ppb (10) 1.9 ppb (2) 10.1 ppb (10) 8.0 ppb (8) 8.4 ppb (8) 0.0 ppb (0) 52.0 ppb (49) N/A 34.0 μg/m3 (32) 20.0 μg/m3 (68) 68.0
 
May 7, 2021, 8 p.m. 13.4 ppb (13) 2.6 ppb (3) 14.1 ppb (14) 11.0 ppb (11) 11.2 ppb (11) 0.0 ppb (0) 49.0 ppb (46) 0.29 ppb (4) 38.0 μg/m3 (36) 18.0 μg/m3 (64) 64.0
 
May 7, 2021, 7 p.m. 17.7 ppb (17) 4.2 ppb (4) 18.0 ppb (17) 14.0 ppb (14) 13.4 ppb (13) N/A 41.0 ppb (38) N/A 42.0 μg/m3 (39) 17.0 μg/m3 (62) 62.0
 
May 7, 2021, 6 p.m. 19.4 ppb (19) 4.0 ppb (4) 19.6 ppb (19) 15.0 ppb (15) 15.2 ppb (15) N/A 34.0 ppb (32) N/A 36.0 μg/m3 (34) 21.0 μg/m3 (70) 70.0
 
May 7, 2021, 5 p.m. 24.7 ppb (24) 6.0 ppb (6) 24.1 ppb (23) 19.0 ppb (18) 18.2 ppb (18) N/A 28.0 ppb (26) N/A 31.0 μg/m3 (29) 18.0 μg/m3 (64) 64.0
 
May 7, 2021, 4 p.m. 21.8 ppb (21) 2.8 ppb (3) 21.2 ppb (20) 19.0 ppb (18) 17.9 ppb (17) 0.0 ppb (0) 25.0 ppb (24) N/A 29.0 μg/m3 (27) 17.0 μg/m3 (62) 62.0
 
May 7, 2021, 3 p.m. 19.7 ppb (19) 2.1 ppb (2) 18.4 ppb (18) 18.0 ppb (17) 16.1 ppb (16) 0.0 ppb (0) 24.0 ppb (23) N/A 30.0 μg/m3 (28) 19.0 μg/m3 (66) 66.0
 
May 7, 2021, 2 p.m. 18.7 ppb (18) 1.7 ppb (2) 16.0 ppb (16) 17.0 ppb (17) 14.1 ppb (14) 0.0 ppb (0) 22.0 ppb (21) N/A 31.0 μg/m3 (29) 18.0 μg/m3 (64) 64.0
 
May 7, 2021, 1 p.m. 19.1 ppb (19) 1.0 ppb (1) 16.6 ppb (16) 18.0 ppb (17) 15.7 ppb (15) 0.0 ppb (0) 21.0 ppb (20) N/A 27.0 μg/m3 (25) 21.0 μg/m3 (70) 70.0
 
May 7, 2021, noon 11.3 ppb (11) 0.5 ppb (1) 9.6 ppb (10) 11.0 ppb (11) 9.4 ppb (9) 0.0 ppb (0) 27.0 ppb (25) N/A 30.0 μg/m3 (28) 22.0 μg/m3 (72) 72.0
 
May 7, 2021, 11 a.m. 8.7 ppb (9) 0.3 ppb (1) 7.6 ppb (8) 8.0 ppb (8) 7.5 ppb (8) 0.0 ppb (0) 30.0 ppb (28) N/A 30.0 μg/m3 (28) 17.0 μg/m3 (62) 62.0
 
May 7, 2021, 10 a.m. 8.5 ppb (9) 0.2 ppb (1) 7.9 ppb (8) 8.0 ppb (8) 7.9 ppb (8) 0.0 ppb (0) 31.0 ppb (29) N/A 28.0 μg/m3 (26) 19.0 μg/m3 (66) 66.0
 
May 7, 2021, 9 a.m. 8.5 ppb (9) 0.1 ppb (1) 7.9 ppb (8) 8.0 ppb (8) 7.8 ppb (8) 0.0 ppb (0) 31.0 ppb (29) N/A 28.0 μg/m3 (26) 16.0 μg/m3 (60) 60.0
 
May 7, 2021, 8 a.m. 8.2 ppb (8) 0.2 ppb (1) 9.5 ppb (9) 8.0 ppb (8) 9.4 ppb (9) 0.0 ppb (0) 31.0 ppb (29) N/A 29.0 μg/m3 (27) 22.0 μg/m3 (72) 72.0
 
May 7, 2021, 7 a.m. 7.7 ppb (8) 0.1 ppb (1) 8.5 ppb (9) 8.0 ppb (8) 8.5 ppb (9) 0.0 ppb (0) 33.0 ppb (31) N/A 28.0 μg/m3 (26) 18.0 μg/m3 (64) 64.0
 
May 7, 2021, 6 a.m. 9.0 ppb (9) 0.2 ppb (1) 9.6 ppb (10) 9.0 ppb (9) 9.6 ppb (10) 0.0 ppb (0) 32.0 ppb (30) N/A 28.0 μg/m3 (26) 15.0 μg/m3 (58) 58.0
 
May 7, 2021, 5 a.m. 7.4 ppb (7) 0.1 ppb (1) 8.2 ppb (8) 7.0 ppb (7) 8.1 ppb (8) 0.0 ppb (0) 35.0 ppb (33) N/A 24.0 μg/m3 (23) 18.0 μg/m3 (64) 64.0
 
May 7, 2021, 4 a.m. 7.6 ppb (8) 0.2 ppb (1) 8.0 ppb (8) 7.0 ppb (7) 7.9 ppb (8) 0.0 ppb (0) 35.0 ppb (33) N/A 24.0 μg/m3 (23) 19.0 μg/m3 (66) 66.0
 
May 7, 2021, 3 a.m. 6.4 ppb (7) 0.2 ppb (1) 6.7 ppb (7) 6.0 ppb (6) 6.7 ppb (7) 0.0 ppb (0) 38.0 ppb (36) N/A 24.0 μg/m3 (23) 16.0 μg/m3 (60) 60.0
 
May 7, 2021, 2 a.m. 6.6 ppb (7) 0.2 ppb (1) 7.1 ppb (7) 6.0 ppb (6) 7.0 ppb (7) 0.0 ppb (0) 39.0 ppb (37) N/A 22.0 μg/m3 (21) 15.0 μg/m3 (58) 58.0
 
May 7, 2021, 1 a.m. 5.2 ppb (5) 0.5 ppb (1) 5.7 ppb (6) 5.0 ppb (5) 5.1 ppb (5) 0.0 ppb (0) 43.0 ppb (40) N/A 24.0 μg/m3 (23) 17.0 μg/m3 (62) 62.0
 
May 7, 2021, midnight 5.3 ppb (5) 0.9 ppb (1) 6.4 ppb (7) 4.0 ppb (4) 5.3 ppb (5) 0.0 ppb (0) 46.0 ppb (43) N/A 29.0 μg/m3 (27) 14.0 μg/m3 (55) 55.0
 
May 6, 2021, 11 p.m. 5.4 ppb (6) 0.9 ppb (1) 6.2 ppb (6) 5.0 ppb (5) 5.4 ppb (6) 0.0 ppb (0) 51.0 ppb (48) N/A 35.0 μg/m3 (33) 18.0 μg/m3 (64) 64.0
 
May 6, 2021, 10 p.m. 9.0 ppb (9) 1.5 ppb (2) 9.6 ppb (10) 7.0 ppb (7) 8.1 ppb (8) 0.0 ppb (0) 56.0 ppb (55) N/A 35.0 μg/m3 (33) 21.0 μg/m3 (70) 70.0
 
May 6, 2021, 9 p.m. N/A N/A 13.3 ppb (13) N/A 11.0 ppb (11) 1.0 ppb (2) N/A N/A 43.0 μg/m3 (40) 24.0 μg/m3 (77) 77.0
 
May 6, 2021, 8 p.m. N/A N/A 17.9 ppb (17) N/A 14.3 ppb (14) 1.0 ppb (2) N/A N/A 61.0 μg/m3 (54) 28.0 μg/m3 (85) 85.0
 
May 6, 2021, 7 p.m. N/A N/A 25.3 ppb (24) N/A 19.2 ppb (19) 1.0 ppb (2) N/A N/A 59.0 μg/m3 (53) 33.0 μg/m3 (95) 95.0
 
May 6, 2021, 6 p.m. 26.5 ppb (25) 7.0 ppb (7) 27.3 ppb (26) 20.0 ppb (19) 20.0 ppb (19) 0.0 ppb (0) 37.0 ppb (35) N/A 57.0 μg/m3 (52) 33.0 μg/m3 (95) 95.0
 
May 6, 2021, 5 p.m. 24.1 ppb (23) 7.3 ppb (7) 24.6 ppb (24) 17.0 ppb (17) 17.0 ppb (17) 0.0 ppb (0) 31.0 ppb (29) N/A 43.0 μg/m3 (40) 26.0 μg/m3 (81) 81.0
 
May 6, 2021, 4 p.m. 20.9 ppb (20) 4.9 ppb (5) 20.3 ppb (20) 16.0 ppb (16) 15.4 ppb (15) 0.0 ppb (0) 25.0 ppb (24) N/A 44.0 μg/m3 (41) 22.0 μg/m3 (72) 72.0
 
May 6, 2021, 3 p.m. 17.5 ppb (17) 2.4 ppb (3) 17.2 ppb (17) 15.0 ppb (15) 14.9 ppb (15) 0.0 ppb (0) 23.0 ppb (22) N/A 39.0 μg/m3 (37) 24.0 μg/m3 (77) 77.0
 
May 6, 2021, 2 p.m. 21.8 ppb (21) 3.3 ppb (4) 19.4 ppb (19) 18.0 ppb (17) 16.4 ppb (16) 0.0 ppb (0) 16.0 ppb (15) N/A 46.0 μg/m3 (43) 25.0 μg/m3 (79) 79.0
 
May 6, 2021, 1 p.m. 21.3 ppb (21) 2.3 ppb (3) 17.7 ppb (17) 19.0 ppb (18) 16.0 ppb (16) 0.0 ppb (0) 13.0 ppb (13) N/A 44.0 μg/m3 (41) 27.0 μg/m3 (83) 83.0
 
May 6, 2021, noon 19.3 ppb (19) 0.9 ppb (1) 16.7 ppb (16) 18.0 ppb (17) 16.6 ppb (16) 0.0 ppb (0) 12.0 ppb (12) N/A 46.0 μg/m3 (43) 32.0 μg/m3 (93) 93.0
 
May 6, 2021, 11 a.m. 19.2 ppb (19) 4.7 ppb (5) 15.9 ppb (15) 15.0 ppb (15) 12.2 ppb (12) 0.0 ppb (0) 13.0 ppb (13) N/A 34.0 μg/m3 (32) 15.0 μg/m3 (58) 58.0
 
May 6, 2021, 10 a.m. 9.1 ppb (9) 0.5 ppb (1) 8.6 ppb (9) 9.0 ppb (9) 8.3 ppb (8) 0.0 ppb (0) 20.0 ppb (19) N/A 26.0 μg/m3 (25) 14.0 μg/m3 (55) 55.0
 
May 6, 2021, 9 a.m. 7.9 ppb (8) 0.3 ppb (1) 7.5 ppb (8) 8.0 ppb (8) 7.4 ppb (7) 0.0 ppb (0) 24.0 ppb (23) N/A 30.0 μg/m3 (28) 13.0 μg/m3 (53) 53.0
 
May 6, 2021, 8 a.m. 7.6 ppb (8) 0.3 ppb (1) 8.1 ppb (8) 7.0 ppb (7) 8.1 ppb (8) 0.0 ppb (0) 25.0 ppb (24) N/A 29.0 μg/m3 (27) 20.0 μg/m3 (68) 68.0
 
May 6, 2021, 7 a.m. 8.3 ppb (8) 0.3 ppb (1) 8.6 ppb (9) 8.0 ppb (8) 8.5 ppb (9) 0.0 ppb (0) 27.0 ppb (25) N/A 30.0 μg/m3 (28) 16.0 μg/m3 (60) 60.0
 
May 6, 2021, 6 a.m. 7.7 ppb (8) 0.3 ppb (1) 8.2 ppb (8) 7.0 ppb (7) 8.1 ppb (8) 0.0 ppb (0) 29.0 ppb (27) N/A 27.0 μg/m3 (25) 16.0 μg/m3 (60) 60.0
 
May 6, 2021, 5 a.m. 8.8 ppb (9) 0.3 ppb (1) 9.0 ppb (9) 9.0 ppb (9) 8.9 ppb (9) 0.0 ppb (0) 31.0 ppb (29) N/A 29.0 μg/m3 (27) 15.0 μg/m3 (58) 58.0
 
May 6, 2021, 4 a.m. 6.9 ppb (7) 0.2 ppb (1) 7.5 ppb (8) 7.0 ppb (7) 7.4 ppb (7) 0.0 ppb (0) 36.0 ppb (34) N/A 23.0 μg/m3 (22) 19.0 μg/m3 (66) 66.0
 
May 6, 2021, 3 a.m. 6.7 ppb (7) 0.2 ppb (1) 7.1 ppb (7) 6.0 ppb (6) 7.0 ppb (7) 0.0 ppb (0) 39.0 ppb (37) N/A 25.0 μg/m3 (24) 16.0 μg/m3 (60) 60.0
 
May 6, 2021, 2 a.m. 8.2 ppb (8) 0.2 ppb (1) 8.8 ppb (9) 8.0 ppb (8) 8.6 ppb (9) 0.0 ppb (0) 41.0 ppb (38) N/A 29.0 μg/m3 (27) 20.0 μg/m3 (68) 68.0
 
May 6, 2021, 1 a.m. 7.7 ppb (8) 0.6 ppb (1) 8.5 ppb (9) 7.0 ppb (7) 7.9 ppb (8) 0.0 ppb (0) 51.0 ppb (48) N/A 34.0 μg/m3 (32) 19.0 μg/m3 (66) 66.0
 
May 6, 2021, midnight 7.9 ppb (8) 0.8 ppb (1) 9.0 ppb (9) 7.0 ppb (7) 8.2 ppb (8) 1.0 ppb (2) 61.0 ppb (71) N/A 43.0 μg/m3 (40) 25.0 μg/m3 (79) 79.0
 
May 5, 2021, 11 p.m. 10.0 ppb (10) 1.2 ppb (2) 10.9 ppb (11) 9.0 ppb (9) 9.6 ppb (10) 1.0 ppb (2) 62.0 ppb (74) N/A 45.0 μg/m3 (42) 24.0 μg/m3 (77) 77.0
 
May 5, 2021, 10 p.m. 12.5 ppb (12) 1.6 ppb (2) 13.8 ppb (14) 11.0 ppb (11) 12.2 ppb (12) 1.0 ppb (2) 67.0 ppb (91) N/A 53.0 μg/m3 (50) 27.0 μg/m3 (83) 91.0
 
May 5, 2021, 9 p.m. N/A N/A 15.2 ppb (15) N/A 13.4 ppb (13) 1.0 ppb (2) N/A N/A 61.0 μg/m3 (54) 34.0 μg/m3 (98) 98.0
 
May 5, 2021, 8 p.m. N/A N/A 19.4 ppb (19) N/A 17.2 ppb (17) N/A N/A N/A 70.0 μg/m3 (59) 38.0 μg/m3 (108) 108.0
 
May 5, 2021, 7 p.m. 25.2 ppb (24) 3.1 ppb (3) 27.1 ppb (26) 22.0 ppb (21) 23.7 ppb (23) 1.0 ppb (2) 67.0 ppb (91) N/A 75.0 μg/m3 (61) 36.0 μg/m3 (103) 103.0
 
May 5, 2021, 6 p.m. 34.4 ppb (33) 6.6 ppb (7) 35.6 ppb (34) 28.0 ppb (27) 28.9 ppb (28) 1.0 ppb (2) 52.0 ppb (49) N/A 71.0 μg/m3 (59) 38.0 μg/m3 (108) 108.0
 
May 5, 2021, 5 p.m. 54.8 ppb (52) 17.9 ppb (17) 54.9 ppb (52) 37.0 ppb (35) 37.4 ppb (36) 1.0 ppb (2) 27.0 ppb (25) N/A 74.0 μg/m3 (61) 41.0 μg/m3 (115) 115.0
 
May 5, 2021, 4 p.m. 59.6 ppb (57) 24.0 ppb (23) 58.9 ppb (57) 36.0 ppb (34) 34.7 ppb (33) 1.0 ppb (2) 17.0 ppb (16) N/A 77.0 μg/m3 (62) 40.0 μg/m3 (113) 113.0
 
May 5, 2021, 3 p.m. 46.5 ppb (44) 20.4 ppb (20) 43.6 ppb (42) 26.0 ppb (25) 24.3 ppb (23) 1.0 ppb (2) 13.0 ppb (13) N/A 65.0 μg/m3 (56) 34.0 μg/m3 (98) 98.0
 
May 5, 2021, 2 p.m. 42.6 ppb (41) 19.4 ppb (19) 38.9 ppb (37) 23.0 ppb (22) 19.2 ppb (19) 1.0 ppb (2) 9.0 ppb (9) N/A 51.0 μg/m3 (48) 31.0 μg/m3 (91) 91.0
 
May 5, 2021, 1 p.m. 32.7 ppb (31) 7.7 ppb (8) 27.7 ppb (27) 25.0 ppb (24) 19.3 ppb (19) 0.0 ppb (0) 5.0 ppb (5) N/A 47.0 μg/m3 (44) 28.0 μg/m3 (85) 85.0
 
May 5, 2021, noon 27.8 ppb (27) 4.2 ppb (4) 22.1 ppb (21) 24.0 ppb (23) 20.2 ppb (20) 0.0 ppb (0) 8.0 ppb (8) N/A 42.0 μg/m3 (39) 24.0 μg/m3 (77) 77.0
 
May 5, 2021, 11 a.m. 15.5 ppb (15) 1.3 ppb (2) 13.9 ppb (14) 14.0 ppb (14) 13.0 ppb (13) 0.0 ppb (0) 16.0 ppb (15) N/A 35.0 μg/m3 (33) 15.0 μg/m3 (58) 58.0
 
May 5, 2021, 10 a.m. 17.3 ppb (17) 0.9 ppb (1) 17.0 ppb (17) 16.0 ppb (16) 16.4 ppb (16) 0.0 ppb (0) 13.0 ppb (13) N/A 33.0 μg/m3 (31) 21.0 μg/m3 (70) 70.0
 
May 5, 2021, 9 a.m. 15.7 ppb (15) 0.7 ppb (1) 13.8 ppb (14) 15.0 ppb (15) 13.6 ppb (13) 0.0 ppb (0) 14.0 ppb (13) N/A 29.0 μg/m3 (27) 19.0 μg/m3 (66) 66.0
 
May 5, 2021, 8 a.m. 14.1 ppb (14) 0.6 ppb (1) 13.8 ppb (14) 13.0 ppb (13) 13.5 ppb (13) 0.0 ppb (0) 17.0 ppb (16) N/A 31.0 μg/m3 (29) 17.0 μg/m3 (62) 62.0
 
May 5, 2021, 7 a.m. 14.6 ppb (14) 0.4 ppb (1) 14.1 ppb (14) 14.0 ppb (14) 14.0 ppb (14) 0.0 ppb (0) 22.0 ppb (21) N/A 33.0 μg/m3 (31) 25.0 μg/m3 (79) 79.0
 
May 5, 2021, 6 a.m. 19.7 ppb (19) 0.4 ppb (1) 21.3 ppb (21) 19.0 ppb (18) 20.9 ppb (20) 1.0 ppb (2) 21.0 ppb (20) N/A 40.0 μg/m3 (38) 18.0 μg/m3 (64) 64.0
 
May 5, 2021, 5 a.m. 13.6 ppb (13) 0.4 ppb (1) 15.2 ppb (15) 13.0 ppb (13) 14.8 ppb (14) 1.0 ppb (2) 30.0 ppb (28) N/A 38.0 μg/m3 (36) 25.0 μg/m3 (79) 79.0
 
May 5, 2021, 4 a.m. 9.8 ppb (10) 0.4 ppb (1) 10.6 ppb (10) 9.0 ppb (9) 10.2 ppb (10) 0.0 ppb (0) 34.0 ppb (32) N/A 31.0 μg/m3 (29) 19.0 μg/m3 (66) 66.0