ID: 149

AQSQID: 060371103

Site Name: Los Angeles - N. Main Street

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

Updated: Sept. 24, 2020, 12:40 a.m.

Location: Los Angeles (Central City E), CA

Reporting: True, Located: True

Current AQI: 57.0

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
Sept. 23, 2020, 11 p.m. 10.4 ppb (10) 1.5 ppb (1) 8.4 ppb (8) 9.0 ppb (8) 7.5 ppb (7) 0.0 ppb (0) 73.0 ppb (57) N/A 36.0 μg/m3 (33) 15.0 μg/m3 (56) 57.0
 
Sept. 23, 2020, 10 p.m. 9.9 ppb (9) 1.4 ppb (1) 8.1 ppb (8) 9.0 ppb (8) 7.4 ppb (7) N/A 77.0 ppb (60) N/A 38.0 μg/m3 (35) 14.0 μg/m3 (54) 60.0
 
Sept. 23, 2020, 9 p.m. 14.5 ppb (13) 1.9 ppb (2) 13.5 ppb (12) 13.0 ppb (12) 12.2 ppb (11) N/A 81.0 ppb (63) N/A 49.0 μg/m3 (45) 21.0 μg/m3 (69) 69.0
 
Sept. 23, 2020, 8 p.m. 18.7 ppb (17) 2.1 ppb (2) 17.8 ppb (16) 17.0 ppb (16) 16.5 ppb (15) 0.0 ppb (0) 87.0 ppb (68) 0.92 ppb (10) 55.0 μg/m3 (50) 25.0 μg/m3 (78) 78.0
 
Sept. 23, 2020, 7 p.m. 43.0 ppb (40) 7.1 ppb (7) 41.6 ppb (39) 36.0 ppb (33) 34.8 ppb (32) 0.0 ppb (0) 59.0 ppb (45) 1.19 ppb (13) 58.0 μg/m3 (52) 33.0 μg/m3 (95) 95.0
 
Sept. 23, 2020, 6 p.m. 52.3 ppb (48) 10.9 ppb (10) 50.7 ppb (47) 42.0 ppb (39) 39.9 ppb (37) 0.0 ppb (0) 43.0 ppb (33) 1.2 ppb (13) 62.0 μg/m3 (54) 32.0 μg/m3 (93) 93.0
 
Sept. 23, 2020, 5 p.m. 61.8 ppb (58) 19.5 ppb (18) 57.1 ppb (53) 42.0 ppb (39) 38.9 ppb (36) 1.0 ppb (1) 25.0 ppb (19) 1.28 ppb (14) 83.0 μg/m3 (64) 39.0 μg/m3 (109) 109.0
 
Sept. 23, 2020, 4 p.m. 47.6 ppb (44) 16.4 ppb (15) 42.8 ppb (40) 31.0 ppb (29) 27.2 ppb (25) N/A 19.0 ppb (15) N/A 56.0 μg/m3 (50) 23.0 μg/m3 (73) 73.0
 
Sept. 23, 2020, 3 p.m. 48.7 ppb (45) 19.7 ppb (18) 41.5 ppb (38) 29.0 ppb (27) 24.8 ppb (23) 0.0 ppb (0) 11.0 ppb (8) 1.02 ppb (11) 42.0 μg/m3 (38) 23.0 μg/m3 (73) 73.0
 
Sept. 23, 2020, 2 p.m. 74.2 ppb (71) 45.1 ppb (42) 61.3 ppb (58) 29.0 ppb (27) 23.8 ppb (22) 0.0 ppb (0) 3.0 ppb (2) 1.37 ppb (15) 39.0 μg/m3 (35) 18.0 μg/m3 (63) 71.0
 
Sept. 23, 2020, 1 p.m. 70.7 ppb (68) 42.5 ppb (39) 61.9 ppb (58) 28.0 ppb (26) 18.9 ppb (18) 0.0 ppb (0) 1.0 ppb (1) 1.29 ppb (14) 42.0 μg/m3 (38) 21.0 μg/m3 (69) 69.0
 
Sept. 23, 2020, noon 50.7 ppb (47) 23.9 ppb (22) 42.3 ppb (39) 27.0 ppb (25) 23.4 ppb (22) 0.0 ppb (0) 1.0 ppb (1) 1.18 ppb (13) 33.0 μg/m3 (30) 25.0 μg/m3 (78) 78.0
 
Sept. 23, 2020, 11 a.m. 49.8 ppb (46) 20.7 ppb (19) 41.4 ppb (38) 29.0 ppb (27) 21.7 ppb (20) 0.0 ppb (0) 1.0 ppb (1) 1.05 ppb (12) 35.0 μg/m3 (32) 23.0 μg/m3 (73) 73.0
 
Sept. 23, 2020, 10 a.m. 40.0 ppb (37) 9.8 ppb (9) 35.0 ppb (32) 30.0 ppb (28) 28.0 ppb (26) 0.0 ppb (0) 1.0 ppb (1) 0.93 ppb (10) 36.0 μg/m3 (33) 27.0 μg/m3 (82) 82.0
 
Sept. 23, 2020, 9 a.m. 54.3 ppb (50) 19.6 ppb (18) 40.4 ppb (37) 35.0 ppb (32) 28.5 ppb (26) 0.0 ppb (0) 1.0 ppb (1) 1.06 ppb (12) 32.0 μg/m3 (29) 23.0 μg/m3 (73) 73.0
 
Sept. 23, 2020, 8 a.m. 40.7 ppb (38) 9.9 ppb (9) 35.1 ppb (32) 31.0 ppb (29) 30.4 ppb (28) 0.0 ppb (0) 2.0 ppb (2) 1.03 ppb (11) 31.0 μg/m3 (28) 24.0 μg/m3 (76) 76.0
 
Sept. 23, 2020, 7 a.m. 27.1 ppb (25) 2.4 ppb (2) 26.2 ppb (24) 25.0 ppb (23) 25.1 ppb (23) 0.0 ppb (0) 11.0 ppb (8) 0.93 ppb (10) 33.0 μg/m3 (30) 20.0 μg/m3 (67) 67.0
 
Sept. 23, 2020, 6 a.m. 20.9 ppb (19) 1.7 ppb (2) 17.9 ppb (17) 19.0 ppb (18) 17.6 ppb (16) 0.0 ppb (0) 18.0 ppb (14) 0.89 ppb (10) 27.0 μg/m3 (25) 14.0 μg/m3 (54) 54.0
 
Sept. 23, 2020, 5 a.m. 15.2 ppb (14) 1.3 ppb (1) 17.7 ppb (16) 14.0 ppb (13) 14.5 ppb (13) 0.0 ppb (0) 30.0 ppb (23) 0.82 ppb (9) 29.0 μg/m3 (26) 18.0 μg/m3 (63) 63.0
 
Sept. 23, 2020, 4 a.m. 9.4 ppb (9) 1.1 ppb (1) 6.4 ppb (6) 8.0 ppb (7) 6.3 ppb (6) 0.0 ppb (0) 44.0 ppb (34) 0.68 ppb (8) 31.0 μg/m3 (28) 11.0 μg/m3 (46) 46.0
 
Sept. 23, 2020, 3 a.m. 8.5 ppb (8) 1.0 ppb (1) 5.2 ppb (5) 8.0 ppb (7) 5.2 ppb (5) 0.0 ppb (0) 49.0 ppb (38) 0.65 ppb (7) 31.0 μg/m3 (28) 14.0 μg/m3 (54) 54.0
 
Sept. 23, 2020, 2 a.m. 9.0 ppb (8) 1.0 ppb (1) 5.7 ppb (5) 8.0 ppb (7) 5.6 ppb (5) 0.0 ppb (0) 47.0 ppb (36) 0.62 ppb (7) 28.0 μg/m3 (25) 15.0 μg/m3 (56) 56.0
 
Sept. 23, 2020, 1 a.m. 8.7 ppb (8) 1.0 ppb (1) 5.5 ppb (5) 8.0 ppb (7) 5.4 ppb (5) 0.0 ppb (0) 54.0 ppb (42) 0.59 ppb (7) 29.0 μg/m3 (26) 16.0 μg/m3 (59) 59.0
 
Sept. 23, 2020, midnight 10.6 ppb (10) 1.4 ppb (1) 7.7 ppb (7) 9.0 ppb (8) 7.0 ppb (6) 0.0 ppb (0) 57.0 ppb (44) 0.6 ppb (7) 29.0 μg/m3 (26) 14.0 μg/m3 (54) 54.0
 
Sept. 22, 2020, 11 p.m. 13.5 ppb (12) 1.8 ppb (2) 11.3 ppb (10) 12.0 ppb (11) 10.1 ppb (9) 0.0 ppb (0) 70.0 ppb (54) 0.62 ppb (7) 42.0 μg/m3 (38) 15.0 μg/m3 (56) 56.0
 
Sept. 22, 2020, 10 p.m. 12.8 ppb (12) 1.6 ppb (1) 11.5 ppb (11) 11.0 ppb (10) 10.5 ppb (10) 0.0 ppb (0) 77.0 ppb (60) 0.63 ppb (7) 49.0 μg/m3 (45) 20.0 μg/m3 (67) 67.0
 
Sept. 22, 2020, 9 p.m. 12.5 ppb (12) 1.6 ppb (1) 11.6 ppb (11) 11.0 ppb (10) 10.8 ppb (10) 0.0 ppb (0) 81.0 ppb (63) 0.62 ppb (7) 50.0 μg/m3 (45) 24.0 μg/m3 (76) 76.0
 
Sept. 22, 2020, 8 p.m. 17.4 ppb (16) 1.9 ppb (2) 17.2 ppb (16) 16.0 ppb (15) 16.1 ppb (15) 0.0 ppb (0) 89.0 ppb (70) 0.66 ppb (7) 57.0 μg/m3 (51) 31.0 μg/m3 (90) 90.0
 
Sept. 22, 2020, 7 p.m. 32.8 ppb (30) 5.0 ppb (5) 32.2 ppb (30) 28.0 ppb (26) 27.8 ppb (26) N/A 66.0 ppb (51) N/A 70.0 μg/m3 (58) 35.0 μg/m3 (99) 99.0
 
Sept. 22, 2020, 6 p.m. 46.0 ppb (43) 11.3 ppb (10) 44.6 ppb (41) 35.0 ppb (32) 34.2 ppb (32) N/A 40.0 ppb (31) N/A 69.0 μg/m3 (57) 38.0 μg/m3 (106) 106.0
 
Sept. 22, 2020, 5 p.m. 50.5 ppb (47) 18.8 ppb (17) 48.6 ppb (45) 32.0 ppb (30) 31.8 ppb (29) N/A 25.0 ppb (19) N/A 67.0 μg/m3 (56) 40.0 μg/m3 (111) 111.0
 
Sept. 22, 2020, 4 p.m. 37.4 ppb (35) 14.4 ppb (13) 33.8 ppb (31) 23.0 ppb (21) 21.2 ppb (20) 0.0 ppb (0) 19.0 ppb (15) N/A 61.0 μg/m3 (53) 32.0 μg/m3 (93) 93.0
 
Sept. 22, 2020, 3 p.m. 24.4 ppb (23) 6.9 ppb (6) 20.5 ppb (19) 18.0 ppb (17) 14.9 ppb (14) 0.0 ppb (0) 17.0 ppb (13) N/A 46.0 μg/m3 (42) 27.0 μg/m3 (82) 82.0
 
Sept. 22, 2020, 2 p.m. 22.1 ppb (20) 3.5 ppb (3) 16.7 ppb (15) 19.0 ppb (18) 14.8 ppb (14) 0.0 ppb (0) 15.0 ppb (12) N/A 41.0 μg/m3 (37) 31.0 μg/m3 (90) 90.0
 
Sept. 22, 2020, 1 p.m. 18.0 ppb (17) 2.5 ppb (2) 12.5 ppb (12) 16.0 ppb (15) 10.7 ppb (10) 0.0 ppb (0) 18.0 ppb (14) N/A 34.0 μg/m3 (31) 18.0 μg/m3 (63) 63.0
 
Sept. 22, 2020, noon 16.1 ppb (15) 2.2 ppb (2) 10.5 ppb (10) 14.0 ppb (13) 10.0 ppb (9) 0.0 ppb (0) 21.0 ppb (16) N/A 25.0 μg/m3 (23) 18.0 μg/m3 (63) 63.0
 
Sept. 22, 2020, 11 a.m. 12.1 ppb (11) 1.6 ppb (1) 6.0 ppb (6) 11.0 ppb (10) 5.1 ppb (5) 0.0 ppb (0) 23.0 ppb (18) N/A 21.0 μg/m3 (19) 13.0 μg/m3 (52) 52.0
 
Sept. 22, 2020, 10 a.m. 10.0 ppb (9) 1.6 ppb (1) 4.9 ppb (5) 8.0 ppb (7) 4.3 ppb (4) 0.0 ppb (0) 26.0 ppb (20) N/A 22.0 μg/m3 (20) 13.0 μg/m3 (52) 52.0
 
Sept. 22, 2020, 9 a.m. 7.6 ppb (7) 1.1 ppb (1) 4.3 ppb (4) 7.0 ppb (6) 4.2 ppb (4) 0.0 ppb (0) 31.0 ppb (24) N/A 18.0 μg/m3 (16) 15.0 μg/m3 (56) 56.0
 
Sept. 22, 2020, 8 a.m. 7.2 ppb (7) 1.2 ppb (1) 3.9 ppb (4) 6.0 ppb (6) 3.8 ppb (4) 0.0 ppb (0) 35.0 ppb (27) N/A 20.0 μg/m3 (18) 16.0 μg/m3 (59) 59.0
 
Sept. 22, 2020, 7 a.m. 6.2 ppb (6) 1.0 ppb (1) 3.1 ppb (3) 5.0 ppb (5) 3.0 ppb (3) 0.0 ppb (0) 39.0 ppb (30) N/A 20.0 μg/m3 (18) 20.0 μg/m3 (67) 67.0
 
Sept. 22, 2020, 6 a.m. 6.9 ppb (6) 1.1 ppb (1) 3.2 ppb (3) 6.0 ppb (6) 3.1 ppb (3) 0.0 ppb (0) 41.0 ppb (32) N/A 25.0 μg/m3 (23) 12.0 μg/m3 (50) 50.0
 
Sept. 22, 2020, 5 a.m. 6.8 ppb (6) 1.0 ppb (1) 3.4 ppb (3) 6.0 ppb (6) 3.4 ppb (3) 0.0 ppb (0) 40.0 ppb (31) N/A 18.0 μg/m3 (16) 12.0 μg/m3 (50) 50.0
 
Sept. 22, 2020, 4 a.m. 7.9 ppb (7) 1.0 ppb (1) 4.3 ppb (4) 7.0 ppb (6) 4.3 ppb (4) 0.0 ppb (0) 40.0 ppb (31) N/A 23.0 μg/m3 (21) 10.0 μg/m3 (42) 42.0
 
Sept. 22, 2020, 3 a.m. 8.2 ppb (8) 1.0 ppb (1) 4.6 ppb (4) 7.0 ppb (6) 4.5 ppb (4) 0.0 ppb (0) 42.0 ppb (32) N/A 25.0 μg/m3 (23) 19.0 μg/m3 (65) 65.0
 
Sept. 22, 2020, 2 a.m. 8.9 ppb (8) 0.9 ppb (1) 5.7 ppb (5) 8.0 ppb (7) 5.7 ppb (5) 0.0 ppb (0) 44.0 ppb (34) N/A 29.0 μg/m3 (26) 16.0 μg/m3 (59) 59.0
 
Sept. 22, 2020, 1 a.m. 9.2 ppb (9) 1.0 ppb (1) 6.2 ppb (6) 8.0 ppb (7) 6.0 ppb (6) 0.0 ppb (0) 54.0 ppb (42) N/A 33.0 μg/m3 (30) 18.0 μg/m3 (63) 63.0
 
Sept. 22, 2020, midnight 10.0 ppb (9) 1.3 ppb (1) 7.3 ppb (7) 9.0 ppb (8) 6.7 ppb (6) 0.0 ppb (0) 64.0 ppb (49) N/A 34.0 μg/m3 (31) 17.0 μg/m3 (61) 61.0
 
Sept. 21, 2020, 11 p.m. 11.9 ppb (11) 1.7 ppb (2) 10.0 ppb (9) 10.0 ppb (9) 8.9 ppb (8) 0.0 ppb (0) 69.0 ppb (53) N/A 38.0 μg/m3 (35) 19.0 μg/m3 (65) 65.0
 
Sept. 21, 2020, 10 p.m. 11.8 ppb (11) 1.6 ppb (1) 10.3 ppb (10) 10.0 ppb (9) 9.3 ppb (9) 0.0 ppb (0) 72.0 ppb (56) N/A 41.0 μg/m3 (37) 24.0 μg/m3 (76) 76.0
 
Sept. 21, 2020, 9 p.m. 12.8 ppb (12) 2.0 ppb (2) 11.1 ppb (10) 11.0 ppb (10) 9.8 ppb (9) 0.0 ppb (0) 69.0 ppb (53) N/A 48.0 μg/m3 (44) 26.0 μg/m3 (80) 80.0
 
Sept. 21, 2020, 8 p.m. 17.1 ppb (16) 2.6 ppb (2) 15.7 ppb (15) 15.0 ppb (14) 13.7 ppb (13) 0.0 ppb (0) 65.0 ppb (50) N/A 59.0 μg/m3 (52) 26.0 μg/m3 (80) 80.0
 
Sept. 21, 2020, 7 p.m. 24.3 ppb (23) 5.3 ppb (5) 22.3 ppb (21) 19.0 ppb (18) 17.8 ppb (16) 0.0 ppb (0) 50.0 ppb (38) N/A 50.0 μg/m3 (45) 25.0 μg/m3 (78) 78.0
 
Sept. 21, 2020, 6 p.m. 30.3 ppb (28) 8.5 ppb (8) 28.3 ppb (26) 22.0 ppb (20) 20.6 ppb (19) 0.0 ppb (0) 35.0 ppb (27) N/A 56.0 μg/m3 (50) 30.0 μg/m3 (88) 88.0
 
Sept. 21, 2020, 5 p.m. 32.9 ppb (30) 11.8 ppb (11) 30.0 ppb (28) 21.0 ppb (19) 19.3 ppb (18) 0.0 ppb (0) 23.0 ppb (18) N/A 50.0 μg/m3 (45) 28.0 μg/m3 (84) 84.0
 
Sept. 21, 2020, 4 p.m. 32.6 ppb (30) 12.3 ppb (11) 28.7 ppb (27) 20.0 ppb (19) 17.6 ppb (16) 0.0 ppb (0) 16.0 ppb (12) N/A 45.0 μg/m3 (41) 24.0 μg/m3 (76) 76.0
 
Sept. 21, 2020, 3 p.m. 38.5 ppb (36) 14.5 ppb (13) 33.1 ppb (31) 24.0 ppb (22) 20.4 ppb (19) 0.0 ppb (0) 9.0 ppb (7) N/A 45.0 μg/m3 (41) 27.0 μg/m3 (82) 82.0
 
Sept. 21, 2020, 2 p.m. 36.1 ppb (33) 10.2 ppb (9) 27.2 ppb (25) 26.0 ppb (24) 20.3 ppb (19) 0.0 ppb (0) 6.0 ppb (5) N/A 47.0 μg/m3 (43) 25.0 μg/m3 (78) 78.0
 
Sept. 21, 2020, 1 p.m. 39.2 ppb (36) 11.0 ppb (10) 29.1 ppb (27) 27.0 ppb (25) 19.1 ppb (18) 0.0 ppb (0) 4.0 ppb (3) N/A 43.0 μg/m3 (39) 25.0 μg/m3 (78) 78.0
 
Sept. 21, 2020, noon 22.0 ppb (20) 2.4 ppb (2) 15.2 ppb (14) 20.0 ppb (19) 14.3 ppb (13) 0.0 ppb (0) 9.0 ppb (7) N/A 44.0 μg/m3 (40) 23.0 μg/m3 (73) 73.0
 
Sept. 21, 2020, 11 a.m. 17.0 ppb (16) 1.5 ppb (1) 11.1 ppb (10) 16.0 ppb (15) 11.0 ppb (10) 0.0 ppb (0) 13.0 ppb (10) N/A 38.0 μg/m3 (35) 22.0 μg/m3 (71) 71.0
 
Sept. 21, 2020, 10 a.m. 16.7 ppb (15) 1.7 ppb (2) 11.0 ppb (10) 15.0 ppb (14) 10.8 ppb (10) 0.0 ppb (0) 14.0 ppb (11) N/A 31.0 μg/m3 (28) 16.0 μg/m3 (59) 59.0
 
Sept. 21, 2020, 9 a.m. 17.1 ppb (16) 1.5 ppb (1) 12.6 ppb (12) 16.0 ppb (15) 12.4 ppb (11) 0.0 ppb (0) 15.0 ppb (12) N/A 36.0 μg/m3 (33) 19.0 μg/m3 (65) 65.0
 
Sept. 21, 2020, 8 a.m. 14.6 ppb (14) 1.4 ppb (1) 12.5 ppb (12) 13.0 ppb (12) 12.3 ppb (11) 0.0 ppb (0) 17.0 ppb (13) N/A 30.0 μg/m3 (27) 15.0 μg/m3 (56) 56.0
 
Sept. 21, 2020, 7 a.m. 13.8 ppb (13) 1.4 ppb (1) 13.4 ppb (12) 12.0 ppb (11) 12.5 ppb (12) 0.0 ppb (0) 18.0 ppb (14) N/A 29.0 μg/m3 (26) 16.0 μg/m3 (59) 59.0
 
Sept. 21, 2020, 6 a.m. 9.8 ppb (9) 1.3 ppb (1) 6.4 ppb (6) 9.0 ppb (8) 6.4 ppb (6) 0.0 ppb (0) 24.0 ppb (18) N/A 30.0 μg/m3 (27) 10.0 μg/m3 (42) 42.0
 
Sept. 21, 2020, 5 a.m. 12.0 ppb (11) 1.2 ppb (1) 8.0 ppb (7) 11.0 ppb (10) 8.0 ppb (7) 0.0 ppb (0) 22.0 ppb (17) N/A 28.0 μg/m3 (25) 14.0 μg/m3 (54) 54.0
 
Sept. 21, 2020, 4 a.m. 12.3 ppb (11) 1.2 ppb (1) 8.5 ppb (8) 11.0 ppb (10) 8.3 ppb (8) 0.0 ppb (0) 22.0 ppb (17) N/A 24.0 μg/m3 (22) 13.0 μg/m3 (52) 52.0
 
Sept. 21, 2020, 3 a.m. 8.0 ppb (7) 1.1 ppb (1) 3.9 ppb (4) 7.0 ppb (6) 3.9 ppb (4) 0.0 ppb (0) 28.0 ppb (22) N/A 26.0 μg/m3 (24) 20.0 μg/m3 (67) 67.0
 
Sept. 21, 2020, 2 a.m. 8.5 ppb (8) 1.2 ppb (1) 3.3 ppb (3) 7.0 ppb (6) 3.2 ppb (3) 0.0 ppb (0) 33.0 ppb (25) N/A 28.0 μg/m3 (25) 18.0 μg/m3 (63) 63.0
 
Sept. 21, 2020, 1 a.m. 7.4 ppb (7) 1.1 ppb (1) 2.8 ppb (3) 6.0 ppb (6) 2.6 ppb (2) 0.0 ppb (0) 45.0 ppb (35) N/A 34.0 μg/m3 (31) 17.0 μg/m3 (61) 61.0
 
Sept. 21, 2020, midnight 9.2 ppb (9) 1.3 ppb (1) 3.8 ppb (4) 8.0 ppb (7) 3.3 ppb (3) 0.0 ppb (0) 63.0 ppb (48) N/A 40.0 μg/m3 (36) 18.0 μg/m3 (63) 63.0
 
Sept. 20, 2020, 11 p.m. 10.8 ppb (10) 1.5 ppb (1) N/A 9.0 ppb (8) N/A 1.0 ppb (1) 74.0 ppb (57) N/A 41.0 μg/m3 (37) 20.0 μg/m3 (67) 67.0
 
Sept. 20, 2020, 10 p.m. 10.0 ppb (9) 1.5 ppb (1) 8.2 ppb (8) 9.0 ppb (8) 7.6 ppb (7) 1.0 ppb (1) 79.0 ppb (62) N/A 38.0 μg/m3 (35) 25.0 μg/m3 (78) 78.0
 
Sept. 20, 2020, 9 p.m. 10.7 ppb (10) 1.5 ppb (1) 9.2 ppb (9) 9.0 ppb (8) 8.5 ppb (8) 1.0 ppb (1) 82.0 ppb (64) N/A 45.0 μg/m3 (41) 27.0 μg/m3 (82) 82.0
 
Sept. 20, 2020, 8 p.m. 11.4 ppb (11) 1.6 ppb (1) 10.1 ppb (9) 10.0 ppb (9) 9.1 ppb (8) 0.0 ppb (0) 76.0 ppb (59) N/A 52.0 μg/m3 (47) 26.0 μg/m3 (80) 80.0
 
Sept. 20, 2020, 7 p.m. 10.2 ppb (9) 1.5 ppb (1) 8.9 ppb (8) 9.0 ppb (8) 8.2 ppb (8) 0.0 ppb (0) 77.0 ppb (60) N/A 44.0 μg/m3 (40) 31.0 μg/m3 (90) 90.0
 
Sept. 20, 2020, 6 p.m. 14.9 ppb (14) 3.0 ppb (3) 13.0 ppb (12) 12.0 ppb (11) 10.7 ppb (10) 0.0 ppb (0) 54.0 ppb (42) N/A 41.0 μg/m3 (37) 25.0 μg/m3 (78) 78.0
 
Sept. 20, 2020, 5 p.m. 22.6 ppb (21) 7.1 ppb (7) 19.9 ppb (18) 16.0 ppb (15) 13.5 ppb (12) 0.0 ppb (0) 31.0 ppb (24) N/A 39.0 μg/m3 (35) 24.0 μg/m3 (76) 76.0
 
Sept. 20, 2020, 4 p.m. 22.4 ppb (21) 8.3 ppb (8) 18.7 ppb (17) 14.0 ppb (13) 11.5 ppb (11) 0.0 ppb (0) 21.0 ppb (16) N/A 34.0 μg/m3 (31) 21.0 μg/m3 (69) 69.0
 
Sept. 20, 2020, 3 p.m. 26.1 ppb (24) 9.5 ppb (9) 21.1 ppb (20) 17.0 ppb (16) 13.2 ppb (12) 0.0 ppb (0) 12.0 ppb (9) N/A 30.0 μg/m3 (27) 19.0 μg/m3 (65) 65.0
 
Sept. 20, 2020, 2 p.m. 45.5 ppb (42) 23.3 ppb (22) 38.5 ppb (36) 22.0 ppb (20) 18.5 ppb (17) 0.0 ppb (0) 3.0 ppb (2) N/A 39.0 μg/m3 (35) 19.0 μg/m3 (65) 65.0
 
Sept. 20, 2020, 1 p.m. 40.3 ppb (37) 18.1 ppb (17) 33.7 ppb (31) 22.0 ppb (20) 16.5 ppb (15) 0.0 ppb (0) 1.0 ppb (1) N/A 35.0 μg/m3 (32) 12.0 μg/m3 (50) 50.0
 
Sept. 20, 2020, noon 37.4 ppb (35) 12.8 ppb (12) 32.4 ppb (30) 25.0 ppb (23) 22.3 ppb (21) 0.0 ppb (0) 1.0 ppb (1) N/A 34.0 μg/m3 (31) 18.0 μg/m3 (63) 63.0
 
Sept. 20, 2020, 11 a.m. 43.3 ppb (40) 15.5 ppb (14) 32.9 ppb (30) 28.0 ppb (26) 21.5 ppb (20) 0.0 ppb (0) 1.0 ppb (1) N/A 34.0 μg/m3 (31) 19.0 μg/m3 (65) 65.0
 
Sept. 20, 2020, 10 a.m. 29.5 ppb (27) 4.2 ppb (4) 24.4 ppb (23) 25.0 ppb (23) 23.1 ppb (21) 0.0 ppb (0) 3.0 ppb (2) N/A 38.0 μg/m3 (35) 16.0 μg/m3 (59) 59.0
 
Sept. 20, 2020, 9 a.m. 30.7 ppb (28) 2.9 ppb (3) 23.6 ppb (22) 28.0 ppb (26) 23.0 ppb (21) 0.0 ppb (0) 4.0 ppb (3) N/A 39.0 μg/m3 (35) 21.0 μg/m3 (69) 69.0
 
Sept. 20, 2020, 8 a.m. 40.5 ppb (38) 8.6 ppb (8) 43.4 ppb (40) 32.0 ppb (30) 32.3 ppb (30) 0.0 ppb (0) 2.0 ppb (2) N/A 46.0 μg/m3 (42) 15.0 μg/m3 (56) 56.0
 
Sept. 20, 2020, 7 a.m. 36.3 ppb (34) 4.7 ppb (4) 35.1 ppb (32) 32.0 ppb (30) 31.5 ppb (29) 0.0 ppb (0) 3.0 ppb (2) N/A 45.0 μg/m3 (41) 13.0 μg/m3 (52) 52.0
 
Sept. 20, 2020, 6 a.m. 28.7 ppb (27) 2.2 ppb (2) 25.9 ppb (24) 27.0 ppb (25) 25.3 ppb (23) 0.0 ppb (0) 8.0 ppb (6) N/A 37.0 μg/m3 (34) 18.0 μg/m3 (63) 63.0
 
Sept. 20, 2020, 5 a.m. 23.4 ppb (22) 1.6 ppb (1) 21.6 ppb (20) 22.0 ppb (20) 20.9 ppb (19) 0.0 ppb (0) 16.0 ppb (12) N/A 37.0 μg/m3 (34) 13.0 μg/m3 (52) 52.0
 
Sept. 20, 2020, 4 a.m. 19.3 ppb (18) 1.2 ppb (1) 16.2 ppb (15) 18.0 ppb (17) 16.0 ppb (15) 0.0 ppb (0) 25.0 ppb (19) N/A 36.0 μg/m3 (33) 14.0 μg/m3 (54) 54.0
 
Sept. 20, 2020, 3 a.m. 9.3 ppb (9) 1.0 ppb (1) 5.8 ppb (5) 8.0 ppb (7) 5.8 ppb (5) 0.0 ppb (0) 43.0 ppb (33) N/A 28.0 μg/m3 (25) 12.0 μg/m3 (50) 50.0
 
Sept. 20, 2020, 2 a.m. 9.2 ppb (9) 1.0 ppb (1) 5.8 ppb (5) 8.0 ppb (7) 5.7 ppb (5) 0.0 ppb (0) 39.0 ppb (30) N/A 32.0 μg/m3 (29) 5.0 μg/m3 (21) 30.0
 
Sept. 20, 2020, 1 a.m. 7.6 ppb (7) 1.1 ppb (1) 4.8 ppb (4) 7.0 ppb (6) 4.6 ppb (4) 0.0 ppb (0) 47.0 ppb (36) N/A 29.0 μg/m3 (26) 17.0 μg/m3 (61) 61.0
 
Sept. 20, 2020, midnight 8.1 ppb (8) 1.5 ppb (1) 5.1 ppb (5) 7.0 ppb (6) 4.5 ppb (4) 0.0 ppb (0) 51.0 ppb (39) N/A 30.0 μg/m3 (27) 10.0 μg/m3 (42) 42.0
 
Sept. 19, 2020, 11 p.m. 8.9 ppb (8) 1.6 ppb (1) 6.4 ppb (6) 7.0 ppb (6) 5.6 ppb (5) 0.0 ppb (0) 60.0 ppb (46) N/A 32.0 μg/m3 (29) 14.0 μg/m3 (54) 54.0
 
Sept. 19, 2020, 10 p.m. 9.0 ppb (8) 1.5 ppb (1) 7.2 ppb (7) 8.0 ppb (7) 6.4 ppb (6) 1.0 ppb (1) 69.0 ppb (53) N/A 39.0 μg/m3 (35) 16.0 μg/m3 (59) 59.0
 
Sept. 19, 2020, 9 p.m. 11.4 ppb (11) 1.8 ppb (2) 9.5 ppb (9) 10.0 ppb (9) 8.5 ppb (8) 1.0 ppb (1) 71.0 ppb (55) N/A 49.0 μg/m3 (45) 17.0 μg/m3 (61) 61.0
 
Sept. 19, 2020, 8 p.m. 17.3 ppb (16) 2.7 ppb (3) 15.7 ppb (15) 15.0 ppb (14) 13.7 ppb (13) 1.0 ppb (1) 67.0 ppb (52) N/A 48.0 μg/m3 (44) 19.0 μg/m3 (65) 65.0
 
Sept. 19, 2020, 7 p.m. 12.7 ppb (12) 2.4 ppb (2) 11.4 ppb (11) 10.0 ppb (9) 9.7 ppb (9) 1.0 ppb (1) 59.0 ppb (45) N/A 40.0 μg/m3 (36) 11.0 μg/m3 (46) 46.0
 
Sept. 19, 2020, 6 p.m. 17.0 ppb (16) 3.9 ppb (4) 14.9 ppb (14) 13.0 ppb (12) 11.7 ppb (11) 1.0 ppb (1) 46.0 ppb (35) N/A 44.0 μg/m3 (40) 12.0 μg/m3 (50) 50.0
 
Sept. 19, 2020, 5 p.m. 27.2 ppb (25) 9.0 ppb (8) 25.1 ppb (23) 18.0 ppb (17) 15.3 ppb (14) 1.0 ppb (1) 32.0 ppb (25) N/A 49.0 μg/m3 (45) 18.0 μg/m3 (63) 63.0
 
Sept. 19, 2020, 4 p.m. 34.5 ppb (32) 12.6 ppb (12) 30.3 ppb (28) 22.0 ppb (20) 19.4 ppb (18) 1.0 ppb (1) 21.0 ppb (16) N/A 47.0 μg/m3 (43) 19.0 μg/m3 (65) 65.0
 
Sept. 19, 2020, 3 p.m. 39.2 ppb (36) 15.8 ppb (15) 35.7 ppb (33) 23.0 ppb (21) 20.8 ppb (19) 1.0 ppb (1) 11.0 ppb (8) N/A 50.0 μg/m3 (45) 19.0 μg/m3 (65) 65.0
 
Sept. 19, 2020, 2 p.m. 38.1 ppb (35) 15.0 ppb (14) 32.6 ppb (30) 23.0 ppb (21) 20.6 ppb (19) 0.0 ppb (0) 6.0 ppb (5) N/A 46.0 μg/m3 (42) 20.0 μg/m3 (67) 67.0
 
Sept. 19, 2020, 1 p.m. 46.6 ppb (43) 19.2 ppb (18) 35.6 ppb (33) 28.0 ppb (26) 20.5 ppb (19) 0.0 ppb (0) 2.0 ppb (2) N/A 46.0 μg/m3 (42) 21.0 μg/m3 (69) 69.0
 
Sept. 19, 2020, noon 47.8 ppb (44) 19.3 ppb (18) 40.9 ppb (38) 29.0 ppb (27) 24.5 ppb (23) 0.0 ppb (0) 1.0 ppb (1) N/A 40.0 μg/m3 (36) 19.0 μg/m3 (65) 65.0
 
Sept. 19, 2020, 11 a.m. 53.3 ppb (49) 24.1 ppb (22) 30.3 ppb (28) 29.0 ppb (27) 21.8 ppb (20) 0.0 ppb (0) 2.0 ppb (2) N/A 44.0 μg/m3 (40) 19.0 μg/m3 (65) 65.0
 
Sept. 19, 2020, 10 a.m. 29.8 ppb (28) 5.7 ppb (5) 22.1 ppb (20) 24.0 ppb (22) 21.1 ppb (20) 0.0 ppb (0) 5.0 ppb (4) N/A 41.0 μg/m3 (37) 16.0 μg/m3 (59) 59.0
 
Sept. 19, 2020, 9 a.m. 32.4 ppb (30) 5.0 ppb (5) 22.7 ppb (21) 28.0 ppb (26) 20.6 ppb (19) 0.0 ppb (0) 6.0 ppb (5) N/A 41.0 μg/m3 (37) 21.0 μg/m3 (69) 69.0
 
Sept. 19, 2020, 8 a.m. 31.6 ppb (29) 4.1 ppb (4) 28.6 ppb (26) 28.0 ppb (26) 25.9 ppb (24) 0.0 ppb (0) 7.0 ppb (5) N/A 49.0 μg/m3 (45) 21.0 μg/m3 (69) 69.0
 
Sept. 19, 2020, 7 a.m. 25.4 ppb (24) 1.8 ppb (2) 24.9 ppb (23) 24.0 ppb (22) 23.9 ppb (22) 0.0 ppb (0) 11.0 ppb (8) N/A 49.0 μg/m3 (45) 24.0 μg/m3 (76) 76.0
 
Sept. 19, 2020, 6 a.m. 20.2 ppb (19) 1.4 ppb (1) 19.4 ppb (18) 19.0 ppb (18) 19.1 ppb (18) 0.0 ppb (0) 18.0 ppb (14) N/A 47.0 μg/m3 (43) 27.0 μg/m3 (82) 82.0
 
Sept. 19, 2020, 5 a.m. 38.0 ppb (35) 4.1 ppb (4) 31.7 ppb (29) 34.0 ppb (31) 30.4 ppb (28) 1.0 ppb (1) 10.0 ppb (8) N/A 54.0 μg/m3 (49) 26.0 μg/m3 (80) 80.0
 
Sept. 19, 2020, 4 a.m. 48.9 ppb (45) 8.7 ppb (8) 46.0 ppb (43) 40.0 ppb (37) 38.7 ppb (36) 1.0 ppb (1) 5.0 ppb (4) N/A 56.0 μg/m3 (50) 27.0 μg/m3 (82) 82.0
 
Sept. 19, 2020, 3 a.m. 25.9 ppb (24) 1.9 ppb (2) 24.4 ppb (23) 24.0 ppb (22) 23.4 ppb (22) 0.0 ppb (0) 20.0 ppb (15) N/A 55.0 μg/m3 (50) 29.0 μg/m3 (86) 86.0
 
Sept. 19, 2020, 2 a.m. 15.1 ppb (14) 1.1 ppb (1) 13.2 ppb (12) 14.0 ppb (13) 13.1 ppb (12) 0.0 ppb (0) 38.0 ppb (29) N/A 54.0 μg/m3 (49) 24.0 μg/m3 (76) 76.0
 
Sept. 19, 2020, 1 a.m. 9.8 ppb (9) 1.0 ppb (1) 8.0 ppb (7) 9.0 ppb (8) 7.8 ppb (7) 0.0 ppb (0) 58.0 ppb (45) N/A 47.0 μg/m3 (43) 15.0 μg/m3 (56) 56.0
 
Sept. 19, 2020, midnight 11.3 ppb (10) 1.2 ppb (1) 9.8 ppb (9) 10.0 ppb (9) 9.4 ppb (9) 0.0 ppb (0) 87.0 ppb (68) N/A 38.0 μg/m3 (35) 17.0 μg/m3 (61) 68.0
 
Sept. 18, 2020, 11 p.m. 16.4 ppb (15) 1.4 ppb (1) 16.4 ppb (15) 15.0 ppb (14) 15.6 ppb (14) 1.0 ppb (1) 106.0 ppb (84) N/A 50.0 μg/m3 (45) 21.0 μg/m3 (69) 84.0
 
Sept. 18, 2020, 10 p.m. 24.6 ppb (23) 2.5 ppb (2) 24.5 ppb (23) 22.0 ppb (20) 23.0 ppb (21) 2.0 ppb (3) 105.0 ppb (83) N/A 66.0 μg/m3 (56) 32.0 μg/m3 (93) 93.0
 
Sept. 18, 2020, 9 p.m. 31.6 ppb (29) 3.1 ppb (3) 32.5 ppb (30) 29.0 ppb (27) 29.8 ppb (28) 1.0 ppb (1) 80.0 ppb (62) N/A 74.0 μg/m3 (60) 25.0 μg/m3 (78) 78.0
 
Sept. 18, 2020, 8 p.m. 38.8 ppb (36) 4.4 ppb (4) 39.2 ppb (36) 35.0 ppb (32) 34.9 ppb (32) 1.0 ppb (1) 68.0 ppb (52) N/A 44.0 μg/m3 (40) 18.0 μg/m3 (63) 63.0
 
Sept. 18, 2020, 7 p.m. 55.3 ppb (51) 7.5 ppb (7) 56.4 ppb (53) 48.0 ppb (44) 48.7 ppb (45) 1.0 ppb (1) 65.0 ppb (50) N/A 64.0 μg/m3 (54) 27.0 μg/m3 (82) 82.0
 
Sept. 18, 2020, 6 p.m. 92.2 ppb (91) 18.1 ppb (17) 94.1 ppb (93) N/A 75.3 ppb (73) 1.0 ppb (1) 45.0 ppb (35) N/A 93.0 μg/m3 (69) 47.0 μg/m3 (129) 129.0
 
Sept. 18, 2020, 5 p.m. 67.6 ppb (64) 14.8 ppb (14) 70.3 ppb (67) 51.0 ppb (47) 54.6 ppb (51) 1.0 ppb (1) 41.0 ppb (32) N/A 74.0 μg/m3 (60) 42.0 μg/m3 (116) 116.0
 
Sept. 18, 2020, 4 p.m. 57.6 ppb (54) 16.5 ppb (15) 56.8 ppb (53) 41.0 ppb (38) 41.1 ppb (38) 1.0 ppb (1) 28.0 ppb (22) N/A 66.0 μg/m3 (56) 34.0 μg/m3 (97) 97.0
 
Sept. 18, 2020, 3 p.m. 96.6 ppb (95) 50.4 ppb (47) 93.9 ppb (92) 46.0 ppb (43) 45.5 ppb (42) 1.0 ppb (1) 8.0 ppb (6) N/A 86.0 μg/m3 (66) 40.0 μg/m3 (111) 111.0
 
Sept. 18, 2020, 2 p.m. 126.5 ppb (105) 83.4 ppb (81) 118.6 ppb (103) 44.0 ppb (41) 40.8 ppb (38) 1.0 ppb (1) 3.0 ppb (2) N/A 85.0 μg/m3 (65) 38.0 μg/m3 (106) 106.0
 
Sept. 18, 2020, 1 p.m. 111.8 ppb (102) 69.6 ppb (67) 94.5 ppb (93) 43.0 ppb (40) 34.9 ppb (32) 1.0 ppb (1) 2.0 ppb (2) N/A 67.0 μg/m3 (56) 32.0 μg/m3 (93) 102.0
 
Sept. 18, 2020, noon 96.5 ppb (95) 54.5 ppb (51) 79.2 ppb (77) 42.0 ppb (39) 41.0 ppb (38) 1.0 ppb (1) 2.0 ppb (2) N/A 56.0 μg/m3 (50) 31.0 μg/m3 (90) 95.0
 
Sept. 18, 2020, 11 a.m. 78.7 ppb (76) 35.3 ppb (33) 69.8 ppb (67) 44.0 ppb (41) 37.9 ppb (35) 1.0 ppb (1) 2.0 ppb (2) N/A 57.0 μg/m3 (51) 30.0 μg/m3 (88) 88.0
 
Sept. 18, 2020, 10 a.m. 69.8 ppb (67) 27.6 ppb (26) 70.0 ppb (67) 42.0 ppb (39) 41.4 ppb (38) 1.0 ppb (1) 2.0 ppb (2) N/A 39.0 μg/m3 (35) 22.0 μg/m3 (71) 71.0
 
Sept. 18, 2020, 9 a.m. 86.6 ppb (85) 41.2 ppb (38) 77.6 ppb (75) 46.0 ppb (43) 41.0 ppb (38) 0.0 ppb (0) 2.0 ppb (2) N/A 46.0 μg/m3 (42) 19.0 μg/m3 (65) 85.0
 
Sept. 18, 2020, 8 a.m. 72.0 ppb (69) 26.8 ppb (25) 70.0 ppb (67) 45.0 ppb (42) 46.7 ppb (43) 0.0 ppb (0) 2.0 ppb (2) N/A 43.0 μg/m3 (39) 22.0 μg/m3 (71) 71.0
 
Sept. 18, 2020, 7 a.m. 55.9 ppb (52) 10.6 ppb (10) 57.8 ppb (54) 45.0 ppb (42) 46.0 ppb (43) 0.0 ppb (0) 2.0 ppb (2) N/A 41.0 μg/m3 (37) 21.0 μg/m3 (69) 69.0
 
Sept. 18, 2020, 6 a.m. 60.4 ppb (57) 11.5 ppb (11) 58.9 ppb (55) 49.0 ppb (45) 50.3 ppb (47) 0.0 ppb (0) 2.0 ppb (2) N/A 51.0 μg/m3 (46) 23.0 μg/m3 (73) 73.0
 
Sept. 18, 2020, 5 a.m. 61.4 ppb (58) 10.2 ppb (9) 61.0 ppb (57) 51.0 ppb (47) 51.7 ppb (48) 0.0 ppb (0) 3.0 ppb (2) N/A 50.0 μg/m3 (45) 22.0 μg/m3 (71) 71.0
 
Sept. 18, 2020, 4 a.m. 50.2 ppb (46) 6.4 ppb (6) 48.4 ppb (45) 44.0 ppb (41) 44.0 ppb (41) 0.0 ppb (0) 7.0 ppb (5) N/A 48.0 μg/m3 (44) 21.0 μg/m3 (69) 69.0
 
Sept. 18, 2020, 3 a.m. 22.3 ppb (21) 1.3 ppb (1) 20.1 ppb (19) 21.0 ppb (19) 20.0 ppb (19) 0.0 ppb (0) 27.0 ppb (21) N/A 43.0 μg/m3 (39) 23.0 μg/m3 (73) 73.0
 
Sept. 18, 2020, 2 a.m. 17.9 ppb (17) 1.1 ppb (1) 16.0 ppb (15) 17.0 ppb (16) 16.0 ppb (15) 0.0 ppb (0) 52.0 ppb (40) N/A 40.0 μg/m3 (36) 22.0 μg/m3 (71) 71.0
 
Sept. 18, 2020, 1 a.m. 13.7 ppb (13) 1.1 ppb (1) 12.3 ppb (11) 13.0 ppb (12) 12.1 ppb (11) 1.0 ppb (1) 77.0 ppb (60) N/A 40.0 μg/m3 (36) 24.0 μg/m3 (76) 76.0
 
Sept. 18, 2020, midnight 13.2 ppb (12) 1.3 ppb (1) 11.8 ppb (11) 12.0 ppb (11) 11.1 ppb (10) 0.0 ppb (0) 79.0 ppb (62) N/A 33.0 μg/m3 (30) 19.0 μg/m3 (65) 65.0
 
Sept. 17, 2020, 11 p.m. 14.3 ppb (13) 1.9 ppb (2) 13.0 ppb (12) 12.0 ppb (11) 11.6 ppb (11) 0.0 ppb (0) 67.0 ppb (52) 0.25 ppb (3) 32.0 μg/m3 (29) 15.0 μg/m3 (56) 56.0
 
Sept. 17, 2020, 10 p.m. 15.3 ppb (14) 2.5 ppb (2) 14.5 ppb (13) 13.0 ppb (12) 12.5 ppb (12) 0.0 ppb (0) 62.0 ppb (48) 0.23 ppb (3) 30.0 μg/m3 (27) 10.0 μg/m3 (42) 48.0
 
Sept. 17, 2020, 9 p.m. N/A N/A 25.0 ppb (23) N/A 22.1 ppb (20) 1.0 ppb (1) N/A 0.44 ppb (5) 53.0 μg/m3 (48) 17.0 μg/m3 (61) 61.0
 
Sept. 17, 2020, 8 p.m. N/A N/A 39.5 ppb (37) N/A 32.9 ppb (30) 1.0 ppb (1) N/A 0.47 ppb (5) 47.0 μg/m3 (43) 23.0 μg/m3 (73) 73.0
 
Sept. 17, 2020, 7 p.m. N/A N/A 48.4 ppb (45) N/A 38.5 ppb (36) 1.0 ppb (1) N/A 0.5 ppb (6) 54.0 μg/m3 (49) 24.0 μg/m3 (76) 76.0
 
Sept. 17, 2020, 6 p.m. N/A N/A 37.7 ppb (35) N/A 31.3 ppb (29) 1.0 ppb (1) N/A 0.59 ppb (7) 64.0 μg/m3 (54) 35.0 μg/m3 (99) 99.0
 
Sept. 17, 2020, 5 p.m. N/A N/A 61.6 ppb (58) N/A 44.9 ppb (42) 1.0 ppb (1) N/A 0.91 ppb (10) 81.0 μg/m3 (63) 44.0 μg/m3 (121) 121.0
 
Sept. 17, 2020, 4 p.m. N/A N/A 70.3 ppb (67) N/A 46.5 ppb (43) 1.0 ppb (1) N/A N/A 92.0 μg/m3 (68) 47.0 μg/m3 (129) 129.0
 
Sept. 17, 2020, 3 p.m. N/A N/A 94.4 ppb (93) N/A 41.0 ppb (38) 1.0 ppb (1) N/A 1.04 ppb (12) 74.0 μg/m3 (60) 37.0 μg/m3 (104) 104.0
 
Sept. 17, 2020, 2 p.m. 122.9 ppb (104) 83.7 ppb (82) 120.6 ppb (104) 40.0 ppb (37) 38.8 ppb (36) 1.0 ppb (1) 2.0 ppb (2) N/A 103.0 μg/m3 (74) 44.0 μg/m3 (121) 121.0
 
Sept. 17, 2020, 1 p.m. 71.0 ppb (68) 36.0 ppb (33) 63.8 ppb (60) 35.0 ppb (32) 30.9 ppb (29) 1.0 ppb (1) 2.0 ppb (2) N/A 66.0 μg/m3 (56) 42.0 μg/m3 (116) 116.0
 
Sept. 17, 2020, noon 60.9 ppb (57) 26.3 ppb (24) 55.5 ppb (52) 35.0 ppb (32) 33.0 ppb (31) 0.0 ppb (0) 2.0 ppb (2) N/A 52.0 μg/m3 (47) 25.0 μg/m3 (78) 78.0
 
Sept. 17, 2020, 11 a.m. 67.9 ppb (65) 32.8 ppb (30) 62.1 ppb (59) 35.0 ppb (32) 30.3 ppb (28) 0.0 ppb (0) 2.0 ppb (2) N/A 49.0 μg/m3 (45) 24.0 μg/m3 (76) 76.0
 
Sept. 17, 2020, 10 a.m. 63.2 ppb (60) 29.0 ppb (27) 63.2 ppb (60) 34.0 ppb (31) 32.6 ppb (30) 0.0 ppb (0) 2.0 ppb (2) N/A 38.0 μg/m3 (35) 19.0 μg/m3 (65) 65.0
 
Sept. 17, 2020, 9 a.m. 76.3 ppb (74) 42.5 ppb (39) 68.2 ppb (65) 34.0 ppb (31) 30.1 ppb (28) 0.0 ppb (0) 1.0 ppb (1) N/A 36.0 μg/m3 (33) 13.0 μg/m3 (52) 74.0
 
Sept. 17, 2020, 8 a.m. 72.7 ppb (70) 39.1 ppb (36) 72.8 ppb (70) 34.0 ppb (31) 34.0 ppb (31) 0.0 ppb (0) 2.0 ppb (2) N/A 33.0 μg/m3 (30) 12.0 μg/m3 (50) 70.0
 
Sept. 17, 2020, 7 a.m. 57.2 ppb (53) 25.0 ppb (23) 60.9 ppb (57) 32.0 ppb (30) 33.2 ppb (31) 0.0 ppb (0) 2.0 ppb (2) N/A 34.0 μg/m3 (31) 14.0 μg/m3 (54) 57.0
 
Sept. 17, 2020, 2 a.m. 26.8 ppb (25) 2.4 ppb (2) 25.0 ppb (23) 24.0 ppb (22) 23.4 ppb (22) 0.0 ppb (0) 15.0 ppb (12) N/A 35.0 μg/m3 (32) 9.0 μg/m3 (38) 38.0
 
Sept. 17, 2020, 1 a.m. 13.2 ppb (12) 1.3 ppb (1) 10.9 ppb (10) 12.0 ppb (11) 10.5 ppb (10) 0.0 ppb (0) 30.0 ppb (23) N/A 28.0 μg/m3 (25) 11.0 μg/m3 (46) 46.0
 
Sept. 17, 2020, midnight 9.1 ppb (8) 1.6 ppb (1) 6.8 ppb (6) 8.0 ppb (7) 5.9 ppb (5) 0.0 ppb (0) 39.0 ppb (30) N/A 30.0 μg/m3 (27) 12.0 μg/m3 (50) 50.0
 
Sept. 16, 2020, 11 p.m. 9.0 ppb (8) 1.5 ppb (1) 7.1 ppb (7) 8.0 ppb (7) 6.3 ppb (6) 0.0 ppb (0) 62.0 ppb (48) N/A 51.0 μg/m3 (46) 26.0 μg/m3 (80) 80.0
 
Sept. 16, 2020, 10 p.m. 10.4 ppb (10) 1.4 ppb (1) 9.9 ppb (9) 9.0 ppb (8) 9.0 ppb (8) 0.0 ppb (0) 86.0 ppb (68) N/A 60.0 μg/m3 (52) 37.0 μg/m3 (104) 104.0
 
Sept. 16, 2020, 9 p.m. 10.9 ppb (10) 1.5 ppb (1) 10.5 ppb (10) 9.0 ppb (8) 9.7 ppb (9) 0.0 ppb (0) 85.0 ppb (67) N/A 64.0 μg/m3 (54) 32.0 μg/m3 (93) 93.0
 
Sept. 16, 2020, 8 p.m. 16.0 ppb (15) 1.7 ppb (2) 16.9 ppb (16) 14.0 ppb (13) 15.8 ppb (15) 1.0 ppb (1) 95.0 ppb (75) N/A 72.0 μg/m3 (58) 44.0 μg/m3 (121) 121.0