ID: 7872

AQSQID: 840060374010

Site Name: North Holywood

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

Updated: Sept. 19, 2021, 10:57 p.m.

Location: N Hollywood (N Hollywood), CA

Reporting: True, Located: True

Current AQI: 100.0

N Hollywood (N Hollywood) CA, US: 34.181977, -118.363036

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
Sept. 19, 2021, 9 p.m. 6.8 ppb (7) 0.6 ppb (1) N/A 6.0 ppb (6) N/A N/A 70.0 ppb (100) N/A N/A 18.6 μg/m3 (65) 100.0
 
Sept. 19, 2021, 8 p.m. 7.7 ppb (8) 0.7 ppb (1) N/A 7.0 ppb (7) N/A N/A 68.0 ppb (94) N/A N/A 22.0 μg/m3 (72) 94.0
 
Sept. 19, 2021, 7 p.m. 7.6 ppb (8) 0.8 ppb (1) N/A 7.0 ppb (7) N/A N/A 62.0 ppb (74) N/A N/A 20.2 μg/m3 (69) 74.0
 
Sept. 19, 2021, 6 p.m. 8.5 ppb (9) 1.3 ppb (2) N/A 7.0 ppb (7) N/A N/A 50.0 ppb (47) N/A N/A 16.4 μg/m3 (61) 61.0
 
Sept. 19, 2021, 5 p.m. 9.6 ppb (10) 1.9 ppb (2) N/A 8.0 ppb (8) N/A N/A 40.0 ppb (38) N/A N/A 16.9 μg/m3 (62) 62.0
 
Sept. 19, 2021, 4 p.m. 11.7 ppb (12) 3.0 ppb (3) N/A 9.0 ppb (9) N/A N/A 30.0 ppb (28) N/A N/A 20.3 μg/m3 (69) 69.0
 
Sept. 19, 2021, 3 p.m. 14.7 ppb (14) 4.1 ppb (4) N/A 11.0 ppb (11) N/A N/A 22.0 ppb (21) N/A N/A 24.4 μg/m3 (77) 77.0
 
Sept. 19, 2021, 2 p.m. 18.9 ppb (18) 4.7 ppb (5) N/A 14.0 ppb (14) N/A N/A 12.0 ppb (12) N/A N/A 13.9 μg/m3 (55) 55.0
 
Sept. 19, 2021, 1 p.m. 17.3 ppb (17) 2.1 ppb (2) N/A 15.0 ppb (15) N/A N/A 6.0 ppb (6) N/A N/A 16.3 μg/m3 (60) 60.0
 
Sept. 19, 2021, noon 16.0 ppb (16) 1.4 ppb (2) N/A 15.0 ppb (15) N/A N/A 6.0 ppb (6) N/A N/A 13.4 μg/m3 (54) 54.0
 
Sept. 19, 2021, 11 a.m. 15.7 ppb (15) 0.8 ppb (1) N/A 15.0 ppb (15) N/A N/A 10.0 ppb (10) N/A N/A 11.0 μg/m3 (46) 46.0
 
Sept. 19, 2021, 10 a.m. 16.6 ppb (16) 0.9 ppb (1) N/A 16.0 ppb (16) N/A N/A 10.0 ppb (10) N/A N/A 11.9 μg/m3 (50) 50.0
 
Sept. 19, 2021, 9 a.m. 15.3 ppb (15) 0.7 ppb (1) N/A 15.0 ppb (15) N/A N/A 15.0 ppb (14) N/A N/A 13.8 μg/m3 (55) 55.0
 
Sept. 19, 2021, 8 a.m. 13.8 ppb (14) 0.7 ppb (1) N/A 13.0 ppb (13) N/A N/A 19.0 ppb (18) N/A N/A 15.9 μg/m3 (59) 59.0
 
Sept. 19, 2021, 7 a.m. 12.4 ppb (12) 0.5 ppb (1) N/A 12.0 ppb (12) N/A N/A 22.0 ppb (21) N/A N/A 14.4 μg/m3 (56) 56.0
 
Sept. 19, 2021, 6 a.m. 11.9 ppb (12) 0.6 ppb (1) N/A 11.0 ppb (11) N/A N/A 23.0 ppb (22) N/A N/A 11.7 μg/m3 (49) 49.0
 
Sept. 19, 2021, 5 a.m. 11.8 ppb (12) 0.6 ppb (1) N/A 11.0 ppb (11) N/A N/A 26.0 ppb (25) N/A N/A 12.4 μg/m3 (52) 52.0
 
Sept. 19, 2021, 4 a.m. 9.5 ppb (9) 0.4 ppb (1) N/A 9.0 ppb (9) N/A N/A 31.0 ppb (29) N/A N/A 15.6 μg/m3 (59) 59.0
 
Sept. 19, 2021, 3 a.m. 6.9 ppb (7) 0.3 ppb (1) N/A 7.0 ppb (7) N/A N/A 37.0 ppb (35) N/A N/A 14.9 μg/m3 (57) 57.0
 
Sept. 19, 2021, 2 a.m. 5.9 ppb (6) 0.3 ppb (1) N/A 6.0 ppb (6) N/A N/A 42.0 ppb (39) N/A N/A 12.2 μg/m3 (52) 52.0
 
Sept. 19, 2021, 1 a.m. 5.6 ppb (6) 0.4 ppb (1) N/A 5.0 ppb (5) N/A N/A 45.0 ppb (42) N/A N/A 11.0 μg/m3 (46) 46.0
 
Sept. 19, 2021, midnight 5.6 ppb (6) 0.6 ppb (1) N/A 5.0 ppb (5) N/A N/A 49.0 ppb (46) N/A N/A 12.4 μg/m3 (52) 52.0
 
Sept. 18, 2021, 11 p.m. 5.2 ppb (5) 0.6 ppb (1) N/A 5.0 ppb (5) N/A N/A 53.0 ppb (50) N/A N/A 13.4 μg/m3 (54) 54.0
 
Sept. 18, 2021, 10 p.m. 4.8 ppb (5) 0.6 ppb (1) N/A 4.0 ppb (4) N/A N/A 56.0 ppb (55) N/A N/A 15.1 μg/m3 (58) 58.0
 
Sept. 18, 2021, 9 p.m. 4.5 ppb (5) 0.5 ppb (1) N/A 4.0 ppb (4) N/A N/A 58.0 ppb (61) N/A N/A 15.1 μg/m3 (58) 61.0
 
Sept. 18, 2021, 8 p.m. 5.0 ppb (5) 0.6 ppb (1) N/A 4.0 ppb (4) N/A N/A 59.0 ppb (65) N/A N/A 13.4 μg/m3 (54) 65.0
 
Sept. 18, 2021, 7 p.m. 5.6 ppb (6) 0.7 ppb (1) N/A 5.0 ppb (5) N/A N/A 59.0 ppb (65) N/A N/A 15.6 μg/m3 (59) 65.0
 
Sept. 18, 2021, 6 p.m. 6.1 ppb (6) 1.0 ppb (1) N/A 5.0 ppb (5) N/A N/A 51.0 ppb (48) N/A N/A 16.9 μg/m3 (62) 62.0
 
Sept. 18, 2021, 5 p.m. 6.1 ppb (6) 0.9 ppb (1) N/A 5.0 ppb (5) N/A N/A 44.0 ppb (41) N/A N/A 17.3 μg/m3 (62) 62.0
 
Sept. 18, 2021, 4 p.m. 5.6 ppb (6) 0.6 ppb (1) N/A 5.0 ppb (5) N/A N/A 41.0 ppb (38) N/A N/A 16.9 μg/m3 (62) 62.0
 
Sept. 18, 2021, 3 p.m. 12.8 ppb (13) 2.2 ppb (3) N/A 11.0 ppb (11) N/A N/A 29.0 ppb (27) N/A N/A 12.5 μg/m3 (52) 52.0
 
Sept. 18, 2021, 2 p.m. 49.5 ppb (47) 27.3 ppb (26) N/A 22.0 ppb (21) N/A N/A 11.0 ppb (11) N/A N/A 10.0 μg/m3 (42) 47.0
 
Sept. 18, 2021, 1 p.m. 18.2 ppb (18) 1.6 ppb (2) N/A 17.0 ppb (17) N/A N/A 6.0 ppb (6) N/A N/A 11.2 μg/m3 (47) 47.0
 
Sept. 18, 2021, noon 17.9 ppb (17) 1.5 ppb (2) N/A 16.0 ppb (16) N/A N/A 7.0 ppb (7) N/A N/A 15.4 μg/m3 (58) 58.0
 
Sept. 18, 2021, 11 a.m. 15.6 ppb (15) 0.9 ppb (1) N/A 15.0 ppb (15) N/A N/A 11.0 ppb (11) N/A N/A 17.9 μg/m3 (64) 64.0
 
Sept. 18, 2021, 10 a.m. 15.1 ppb (15) 0.8 ppb (1) N/A 14.0 ppb (14) N/A N/A 14.0 ppb (13) N/A N/A 16.1 μg/m3 (60) 60.0
 
Sept. 18, 2021, 9 a.m. 14.6 ppb (14) 0.8 ppb (1) N/A 14.0 ppb (14) N/A N/A 17.0 ppb (16) N/A N/A 12.2 μg/m3 (52) 52.0
 
Sept. 18, 2021, 8 a.m. 12.3 ppb (12) 0.6 ppb (1) N/A 12.0 ppb (12) N/A N/A 21.0 ppb (20) N/A N/A 9.3 μg/m3 (39) 39.0
 
Sept. 18, 2021, 7 a.m. 9.2 ppb (9) 0.4 ppb (1) N/A 9.0 ppb (9) N/A N/A 28.0 ppb (26) N/A N/A 11.2 μg/m3 (47) 47.0
 
Sept. 18, 2021, 6 a.m. 9.0 ppb (9) 0.4 ppb (1) N/A 9.0 ppb (9) N/A N/A 32.0 ppb (30) N/A N/A 13.7 μg/m3 (55) 55.0
 
Sept. 18, 2021, 5 a.m. 7.7 ppb (8) 0.4 ppb (1) N/A 7.0 ppb (7) N/A N/A 35.0 ppb (33) N/A N/A 13.6 μg/m3 (55) 55.0
 
Sept. 18, 2021, 4 a.m. 9.1 ppb (9) 0.3 ppb (1) N/A 9.0 ppb (9) N/A N/A 37.0 ppb (35) N/A N/A 14.9 μg/m3 (57) 57.0
 
Sept. 18, 2021, 3 a.m. 7.4 ppb (7) 0.2 ppb (1) N/A 7.0 ppb (7) N/A N/A 44.0 ppb (41) N/A N/A 15.4 μg/m3 (58) 58.0
 
Sept. 18, 2021, 2 a.m. 8.8 ppb (9) 0.3 ppb (1) N/A 8.0 ppb (8) N/A N/A 46.0 ppb (43) N/A N/A 14.9 μg/m3 (57) 57.0
 
Sept. 18, 2021, 1 a.m. 8.4 ppb (8) 0.4 ppb (1) N/A 8.0 ppb (8) N/A N/A 53.0 ppb (50) N/A N/A 16.1 μg/m3 (60) 60.0
 
Sept. 18, 2021, midnight 8.0 ppb (8) 0.6 ppb (1) N/A 7.0 ppb (7) N/A N/A 59.0 ppb (65) N/A N/A 16.6 μg/m3 (61) 65.0
 
Sept. 17, 2021, 11 p.m. 9.2 ppb (9) 0.9 ppb (1) N/A 8.0 ppb (8) N/A N/A 64.0 ppb (81) N/A N/A 16.1 μg/m3 (60) 81.0
 
Sept. 17, 2021, 10 p.m. 10.0 ppb (10) 0.9 ppb (1) N/A 9.0 ppb (9) N/A N/A 74.0 ppb (103) N/A N/A 20.8 μg/m3 (70) 103.0
 
Sept. 17, 2021, 9 p.m. 12.6 ppb (12) 1.2 ppb (2) N/A 11.0 ppb (11) N/A N/A 78.0 ppb (105) N/A N/A 30.5 μg/m3 (90) 105.0
 
Sept. 17, 2021, 8 p.m. 15.7 ppb (15) 2.0 ppb (2) N/A 14.0 ppb (14) N/A N/A 70.0 ppb (100) N/A N/A 20.5 μg/m3 (69) 100.0
 
Sept. 17, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 22.9 μg/m3 (74) 74.0
 
Sept. 17, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 26.3 μg/m3 (81) 81.0
 
Sept. 17, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 20.5 μg/m3 (69) 69.0
 
Sept. 17, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 25.7 μg/m3 (80) 80.0
 
Sept. 17, 2021, 3 p.m. 10.9 ppb (11) 0.9 ppb (1) N/A 10.0 ppb (10) N/A N/A 32.0 ppb (30) N/A N/A 22.9 μg/m3 (74) 74.0
 
Sept. 17, 2021, 2 p.m. 11.2 ppb (11) 0.8 ppb (1) N/A 10.0 ppb (10) N/A N/A 29.0 ppb (27) N/A N/A 16.4 μg/m3 (61) 61.0
 
Sept. 17, 2021, 1 p.m. 13.0 ppb (13) 0.7 ppb (1) N/A 12.0 ppb (12) N/A N/A 22.0 ppb (21) N/A N/A 15.4 μg/m3 (58) 58.0
 
Sept. 17, 2021, noon 14.0 ppb (14) 0.8 ppb (1) N/A 13.0 ppb (13) N/A N/A 17.0 ppb (16) N/A N/A 13.7 μg/m3 (55) 55.0
 
Sept. 17, 2021, 11 a.m. 9.2 ppb (9) 0.5 ppb (1) N/A 9.0 ppb (9) N/A N/A 25.0 ppb (24) N/A N/A 13.9 μg/m3 (55) 55.0
 
Sept. 17, 2021, 10 a.m. 9.7 ppb (10) 0.5 ppb (1) N/A 9.0 ppb (9) N/A N/A 23.0 ppb (22) N/A N/A 14.2 μg/m3 (56) 56.0
 
Sept. 17, 2021, 9 a.m. 9.5 ppb (9) 0.5 ppb (1) N/A 9.0 ppb (9) N/A N/A 24.0 ppb (23) N/A N/A 14.1 μg/m3 (56) 56.0
 
Sept. 17, 2021, 8 a.m. 8.6 ppb (9) 0.5 ppb (1) N/A 8.0 ppb (8) N/A N/A 29.0 ppb (27) N/A N/A 13.9 μg/m3 (55) 55.0
 
Sept. 17, 2021, 7 a.m. 9.3 ppb (9) 0.4 ppb (1) N/A 9.0 ppb (9) N/A N/A 32.0 ppb (30) N/A N/A 13.9 μg/m3 (55) 55.0
 
Sept. 17, 2021, 6 a.m. 10.6 ppb (10) 0.5 ppb (1) N/A 10.0 ppb (10) N/A N/A 32.0 ppb (30) N/A N/A 13.9 μg/m3 (55) 55.0
 
Sept. 17, 2021, 5 a.m. 10.5 ppb (10) 0.3 ppb (1) N/A 10.0 ppb (10) N/A N/A 36.0 ppb (34) N/A N/A 12.7 μg/m3 (53) 53.0
 
Sept. 17, 2021, 4 a.m. 7.9 ppb (8) 0.3 ppb (1) N/A 8.0 ppb (8) N/A N/A 40.0 ppb (38) N/A N/A 14.6 μg/m3 (57) 57.0
 
Sept. 17, 2021, 3 a.m. 8.3 ppb (8) 0.2 ppb (1) N/A 8.0 ppb (8) N/A N/A 43.0 ppb (40) N/A N/A 15.1 μg/m3 (58) 58.0
 
Sept. 17, 2021, 2 a.m. 8.7 ppb (9) 0.3 ppb (1) N/A 8.0 ppb (8) N/A N/A 47.0 ppb (44) N/A N/A 13.6 μg/m3 (55) 55.0
 
Sept. 17, 2021, 1 a.m. 8.2 ppb (8) 0.3 ppb (1) N/A 8.0 ppb (8) N/A N/A 56.0 ppb (55) N/A N/A 15.4 μg/m3 (58) 58.0
 
Sept. 17, 2021, midnight 8.5 ppb (9) 0.6 ppb (1) N/A 8.0 ppb (8) N/A N/A 64.0 ppb (81) N/A N/A 17.3 μg/m3 (62) 81.0
 
Sept. 16, 2021, 11 p.m. 8.4 ppb (8) 0.6 ppb (1) N/A 8.0 ppb (8) N/A N/A 69.0 ppb (97) N/A N/A 17.4 μg/m3 (63) 97.0
 
Sept. 16, 2021, 10 p.m. 9.7 ppb (10) 0.9 ppb (1) N/A 9.0 ppb (9) N/A N/A 70.0 ppb (100) N/A N/A 20.5 μg/m3 (69) 100.0
 
Sept. 16, 2021, 9 p.m. 11.3 ppb (11) 1.0 ppb (1) N/A 10.0 ppb (10) N/A N/A 72.0 ppb (102) N/A N/A 21.8 μg/m3 (72) 102.0
 
Sept. 16, 2021, 8 p.m. 14.2 ppb (14) 1.6 ppb (2) N/A 13.0 ppb (13) N/A N/A 69.0 ppb (97) N/A N/A 25.1 μg/m3 (79) 97.0
 
Sept. 16, 2021, 7 p.m. 18.5 ppb (18) 3.0 ppb (3) N/A 15.0 ppb (15) N/A N/A 55.0 ppb (51) N/A N/A 25.9 μg/m3 (81) 81.0
 
Sept. 16, 2021, 6 p.m. 15.9 ppb (15) 3.1 ppb (3) N/A 13.0 ppb (13) N/A N/A 46.0 ppb (43) N/A N/A 21.7 μg/m3 (72) 72.0
 
Sept. 16, 2021, 5 p.m. 14.6 ppb (14) 3.2 ppb (4) N/A 11.0 ppb (11) N/A N/A 39.0 ppb (37) N/A N/A 25.2 μg/m3 (79) 79.0
 
Sept. 16, 2021, 4 p.m. 13.1 ppb (13) 2.5 ppb (3) N/A 11.0 ppb (11) N/A N/A 33.0 ppb (31) N/A N/A 25.9 μg/m3 (81) 81.0
 
Sept. 16, 2021, 3 p.m. 10.8 ppb (11) 1.0 ppb (1) N/A 10.0 ppb (10) N/A N/A 32.0 ppb (30) N/A N/A 23.2 μg/m3 (75) 75.0
 
Sept. 16, 2021, 2 p.m. 7.9 ppb (8) 0.5 ppb (1) N/A 7.0 ppb (7) N/A N/A 33.0 ppb (31) N/A N/A 15.4 μg/m3 (58) 58.0
 
Sept. 16, 2021, 1 p.m. 6.8 ppb (7) 0.4 ppb (1) N/A 6.0 ppb (6) N/A N/A 35.0 ppb (33) N/A N/A 20.1 μg/m3 (68) 68.0
 
Sept. 16, 2021, noon 6.2 ppb (6) 0.5 ppb (1) N/A 6.0 ppb (6) N/A N/A 36.0 ppb (34) N/A N/A 16.9 μg/m3 (62) 62.0
 
Sept. 16, 2021, 11 a.m. 6.4 ppb (7) 0.4 ppb (1) N/A 6.0 ppb (6) N/A N/A 35.0 ppb (33) N/A N/A 16.4 μg/m3 (61) 61.0
 
Sept. 16, 2021, 10 a.m. 6.1 ppb (6) 0.5 ppb (1) N/A 6.0 ppb (6) N/A N/A 35.0 ppb (33) N/A N/A 13.6 μg/m3 (55) 55.0
 
Sept. 16, 2021, 9 a.m. 5.6 ppb (6) 0.3 ppb (1) N/A 5.0 ppb (5) N/A N/A 34.0 ppb (32) N/A N/A 11.7 μg/m3 (49) 49.0
 
Sept. 16, 2021, 8 a.m. 7.3 ppb (7) 0.4 ppb (1) N/A 7.0 ppb (7) N/A N/A 31.0 ppb (29) N/A N/A 12.7 μg/m3 (53) 53.0
 
Sept. 16, 2021, 7 a.m. 8.0 ppb (8) 0.5 ppb (1) N/A 7.0 ppb (7) N/A N/A 30.0 ppb (28) N/A N/A 12.4 μg/m3 (52) 52.0
 
Sept. 16, 2021, 6 a.m. 10.1 ppb (10) 0.6 ppb (1) N/A 9.0 ppb (9) N/A N/A 28.0 ppb (26) N/A N/A 11.9 μg/m3 (50) 50.0
 
Sept. 16, 2021, 5 a.m. 9.9 ppb (10) 0.4 ppb (1) N/A 9.0 ppb (9) N/A N/A 32.0 ppb (30) N/A N/A 13.3 μg/m3 (54) 54.0
 
Sept. 16, 2021, 4 a.m. 12.1 ppb (12) 0.3 ppb (1) N/A 12.0 ppb (12) N/A N/A 35.0 ppb (33) N/A N/A 19.0 μg/m3 (66) 66.0
 
Sept. 16, 2021, 3 a.m. 11.1 ppb (11) 0.3 ppb (1) N/A 11.0 ppb (11) N/A N/A 43.0 ppb (40) N/A N/A 15.3 μg/m3 (58) 58.0
 
Sept. 16, 2021, 2 a.m. 8.5 ppb (9) 0.3 ppb (1) N/A 8.0 ppb (8) N/A N/A 51.0 ppb (48) N/A N/A 16.1 μg/m3 (60) 60.0
 
Sept. 16, 2021, 1 a.m. 8.2 ppb (8) 0.3 ppb (1) N/A 8.0 ppb (8) N/A N/A 59.0 ppb (65) N/A N/A 15.1 μg/m3 (58) 65.0
 
Sept. 16, 2021, midnight 8.2 ppb (8) 0.7 ppb (1) N/A 8.0 ppb (8) N/A N/A 63.0 ppb (78) N/A N/A 12.9 μg/m3 (53) 78.0
 
Sept. 15, 2021, 11 p.m. 7.9 ppb (8) 0.6 ppb (1) N/A 7.0 ppb (7) N/A N/A 67.0 ppb (91) N/A N/A 12.4 μg/m3 (52) 91.0
 
Sept. 15, 2021, 10 p.m. 9.0 ppb (9) 0.8 ppb (1) N/A 8.0 ppb (8) N/A N/A 69.0 ppb (97) N/A N/A 14.4 μg/m3 (56) 97.0
 
Sept. 15, 2021, 9 p.m. 11.3 ppb (11) 1.0 ppb (1) N/A 10.0 ppb (10) N/A N/A 72.0 ppb (102) N/A N/A 15.8 μg/m3 (59) 102.0
 
Sept. 15, 2021, 8 p.m. 15.5 ppb (15) 1.6 ppb (2) N/A 14.0 ppb (14) N/A N/A 72.0 ppb (102) N/A N/A 29.8 μg/m3 (89) 102.0
 
Sept. 15, 2021, 7 p.m. 19.4 ppb (19) 2.9 ppb (3) N/A 16.0 ppb (16) N/A N/A 60.0 ppb (68) N/A N/A 24.9 μg/m3 (78) 78.0
 
Sept. 15, 2021, 6 p.m. 21.2 ppb (20) 4.4 ppb (5) N/A 17.0 ppb (17) N/A N/A 44.0 ppb (41) N/A N/A 25.6 μg/m3 (80) 80.0
 
Sept. 15, 2021, 5 p.m. 19.4 ppb (19) 4.5 ppb (5) N/A 15.0 ppb (15) N/A N/A 37.0 ppb (35) N/A N/A 24.9 μg/m3 (78) 78.0
 
Sept. 15, 2021, 4 p.m. 21.2 ppb (20) 6.1 ppb (6) N/A 15.0 ppb (15) N/A N/A 27.0 ppb (25) N/A N/A 31.5 μg/m3 (92) 92.0
 
Sept. 15, 2021, 3 p.m. 20.9 ppb (20) 4.5 ppb (5) N/A 16.0 ppb (16) N/A N/A 18.0 ppb (17) N/A N/A 29.3 μg/m3 (88) 88.0
 
Sept. 15, 2021, 2 p.m. 17.7 ppb (17) 2.1 ppb (2) N/A 16.0 ppb (16) N/A N/A 16.0 ppb (15) N/A N/A 20.0 μg/m3 (68) 68.0
 
Sept. 15, 2021, 1 p.m. 13.8 ppb (14) 0.8 ppb (1) N/A 13.0 ppb (13) N/A N/A 19.0 ppb (18) N/A N/A 26.4 μg/m3 (82) 82.0
 
Sept. 15, 2021, noon 11.8 ppb (12) 0.8 ppb (1) N/A 11.0 ppb (11) N/A N/A 21.0 ppb (20) N/A N/A 21.5 μg/m3 (71) 71.0
 
Sept. 15, 2021, 11 a.m. 11.8 ppb (12) 0.7 ppb (1) N/A 11.0 ppb (11) N/A N/A 21.0 ppb (20) N/A N/A 17.1 μg/m3 (62) 62.0
 
Sept. 15, 2021, 10 a.m. 17.1 ppb (17) 1.0 ppb (1) N/A 16.0 ppb (16) N/A N/A 14.0 ppb (13) N/A N/A 17.3 μg/m3 (62) 62.0
 
Sept. 15, 2021, 9 a.m. 17.4 ppb (17) 0.8 ppb (1) N/A 17.0 ppb (17) N/A N/A 17.0 ppb (16) N/A N/A 17.6 μg/m3 (63) 63.0
 
Sept. 15, 2021, 8 a.m. 16.7 ppb (16) 0.8 ppb (1) N/A 16.0 ppb (16) N/A N/A 20.0 ppb (19) N/A N/A 17.7 μg/m3 (63) 63.0
 
Sept. 15, 2021, 7 a.m. 15.6 ppb (15) 0.5 ppb (1) N/A 15.0 ppb (15) N/A N/A 25.0 ppb (24) N/A N/A 26.8 μg/m3 (82) 82.0
 
Sept. 15, 2021, 6 a.m. 16.8 ppb (16) 0.6 ppb (1) N/A 16.0 ppb (16) N/A N/A 27.0 ppb (25) N/A N/A 13.1 μg/m3 (54) 54.0
 
Sept. 15, 2021, 5 a.m. 19.6 ppb (19) 0.5 ppb (1) N/A 19.0 ppb (18) N/A N/A 28.0 ppb (26) N/A N/A 22.5 μg/m3 (73) 73.0
 
Sept. 15, 2021, 4 a.m. 18.0 ppb (17) 0.4 ppb (1) N/A 18.0 ppb (17) N/A N/A 33.0 ppb (31) N/A N/A 22.5 μg/m3 (73) 73.0
 
Sept. 15, 2021, 3 a.m. 14.3 ppb (14) 0.4 ppb (1) N/A 14.0 ppb (14) N/A N/A 43.0 ppb (40) N/A N/A 22.5 μg/m3 (73) 73.0
 
Sept. 15, 2021, 2 a.m. 11.9 ppb (12) 0.3 ppb (1) N/A 12.0 ppb (12) N/A N/A 51.0 ppb (48) N/A N/A 16.1 μg/m3 (60) 60.0
 
Sept. 15, 2021, 1 a.m. 13.4 ppb (13) 0.6 ppb (1) N/A 13.0 ppb (13) N/A N/A 54.0 ppb (50) N/A N/A 13.9 μg/m3 (55) 55.0
 
Sept. 15, 2021, midnight 14.3 ppb (14) 1.2 ppb (2) N/A 13.0 ppb (13) N/A N/A 57.0 ppb (58) N/A N/A 19.5 μg/m3 (67) 67.0
 
Sept. 14, 2021, 11 p.m. 13.0 ppb (13) 1.3 ppb (2) N/A 12.0 ppb (12) N/A N/A 67.0 ppb (91) N/A N/A 21.7 μg/m3 (72) 91.0
 
Sept. 14, 2021, 10 p.m. 12.9 ppb (13) 1.3 ppb (2) N/A 12.0 ppb (12) N/A N/A 71.0 ppb (101) N/A N/A 19.8 μg/m3 (68) 101.0
 
Sept. 14, 2021, 9 p.m. 14.9 ppb (15) 1.6 ppb (2) N/A 13.0 ppb (13) N/A N/A 73.0 ppb (103) N/A N/A 19.3 μg/m3 (67) 103.0
 
Sept. 14, 2021, 8 p.m. 16.0 ppb (16) 1.7 ppb (2) N/A 14.0 ppb (14) N/A N/A 75.0 ppb (104) N/A N/A 17.1 μg/m3 (62) 104.0
 
Sept. 14, 2021, 7 p.m. 24.5 ppb (24) 4.0 ppb (4) N/A 20.0 ppb (19) N/A N/A 57.0 ppb (58) N/A N/A 19.7 μg/m3 (67) 67.0
 
Sept. 14, 2021, 6 p.m. 30.5 ppb (29) 7.6 ppb (8) N/A 23.0 ppb (22) N/A N/A 40.0 ppb (38) N/A N/A 21.8 μg/m3 (72) 72.0
 
Sept. 14, 2021, 5 p.m. 29.1 ppb (28) 8.8 ppb (9) N/A 20.0 ppb (19) N/A N/A 30.0 ppb (28) N/A N/A 16.4 μg/m3 (61) 61.0
 
Sept. 14, 2021, 4 p.m. 38.4 ppb (37) 15.5 ppb (15) N/A 23.0 ppb (22) N/A N/A 19.0 ppb (18) N/A N/A 24.6 μg/m3 (78) 78.0
 
Sept. 14, 2021, 3 p.m. 43.7 ppb (42) 20.4 ppb (20) N/A 23.0 ppb (22) N/A N/A 12.0 ppb (12) N/A N/A 27.1 μg/m3 (83) 83.0
 
Sept. 14, 2021, 2 p.m. 49.4 ppb (47) 25.3 ppb (24) N/A 24.0 ppb (23) N/A N/A 6.0 ppb (6) N/A N/A 19.3 μg/m3 (67) 67.0
 
Sept. 14, 2021, 1 p.m. 40.7 ppb (39) 15.1 ppb (15) N/A 26.0 ppb (25) N/A N/A 2.0 ppb (2) N/A N/A 14.4 μg/m3 (56) 56.0
 
Sept. 14, 2021, noon 36.0 ppb (34) 9.6 ppb (10) N/A 26.0 ppb (25) N/A N/A 3.0 ppb (3) N/A N/A 13.1 μg/m3 (54) 54.0
 
Sept. 14, 2021, 11 a.m. 27.2 ppb (26) 2.0 ppb (2) N/A 25.0 ppb (24) N/A N/A 4.0 ppb (4) N/A N/A 12.7 μg/m3 (53) 53.0
 
Sept. 14, 2021, 10 a.m. 25.1 ppb (24) 1.6 ppb (2) N/A 24.0 ppb (23) N/A N/A 5.0 ppb (5) N/A N/A 13.9 μg/m3 (55) 55.0
 
Sept. 14, 2021, 9 a.m. 24.0 ppb (23) 1.1 ppb (2) N/A 23.0 ppb (22) N/A N/A 8.0 ppb (8) N/A N/A 16.4 μg/m3 (61) 61.0
 
Sept. 14, 2021, 8 a.m. 22.1 ppb (21) 1.0 ppb (1) N/A 21.0 ppb (20) N/A N/A 9.0 ppb (9) N/A N/A 17.6 μg/m3 (63) 63.0
 
Sept. 14, 2021, 7 a.m. 21.6 ppb (21) 0.7 ppb (1) N/A 21.0 ppb (20) N/A N/A 13.0 ppb (13) N/A N/A 22.3 μg/m3 (73) 73.0
 
Sept. 14, 2021, 6 a.m. 20.6 ppb (20) 0.7 ppb (1) N/A 20.0 ppb (19) N/A N/A 17.0 ppb (16) N/A N/A 20.3 μg/m3 (69) 69.0
 
Sept. 14, 2021, 5 a.m. 19.1 ppb (19) 0.4 ppb (1) N/A 19.0 ppb (18) N/A N/A 25.0 ppb (24) N/A N/A 14.1 μg/m3 (56) 56.0
 
Sept. 14, 2021, 4 a.m. 16.1 ppb (16) 0.4 ppb (1) N/A 16.0 ppb (16) N/A N/A 34.0 ppb (32) N/A N/A 13.4 μg/m3 (54) 54.0
 
Sept. 14, 2021, 3 a.m. 14.9 ppb (15) 0.3 ppb (1) N/A 15.0 ppb (15) N/A N/A 38.0 ppb (36) N/A N/A 11.9 μg/m3 (50) 50.0
 
Sept. 14, 2021, 2 a.m. 14.1 ppb (14) 0.2 ppb (1) N/A 14.0 ppb (14) N/A N/A 45.0 ppb (42) N/A N/A 9.5 μg/m3 (40) 42.0
 
Sept. 14, 2021, 1 a.m. 8.3 ppb (8) 0.3 ppb (1) N/A 8.0 ppb (8) N/A N/A 54.0 ppb (50) N/A N/A 7.8 μg/m3 (33) 50.0
 
Sept. 14, 2021, midnight 8.5 ppb (9) 0.8 ppb (1) N/A 8.0 ppb (8) N/A N/A 60.0 ppb (68) N/A N/A 9.5 μg/m3 (40) 68.0
 
Sept. 13, 2021, 11 p.m. 8.2 ppb (8) 0.8 ppb (1) N/A 7.0 ppb (7) N/A N/A 67.0 ppb (91) N/A N/A 10.0 μg/m3 (42) 91.0
 
Sept. 13, 2021, 10 p.m. 4.9 ppb (5) 0.5 ppb (1) N/A 4.0 ppb (4) N/A N/A 72.0 ppb (102) N/A N/A 8.3 μg/m3 (35) 102.0
 
Sept. 13, 2021, 9 p.m. 5.1 ppb (5) 0.5 ppb (1) N/A 5.0 ppb (5) N/A N/A 71.0 ppb (101) N/A N/A 9.8 μg/m3 (41) 101.0
 
Sept. 13, 2021, 8 p.m. 6.1 ppb (6) 0.6 ppb (1) N/A 5.0 ppb (5) N/A N/A 70.0 ppb (100) N/A N/A 12.8 μg/m3 (53) 100.0
 
Sept. 13, 2021, 7 p.m. 13.3 ppb (13) 1.6 ppb (2) N/A 12.0 ppb (12) N/A N/A 68.0 ppb (94) N/A N/A 15.6 μg/m3 (59) 94.0
 
Sept. 13, 2021, 6 p.m. 21.2 ppb (20) 3.7 ppb (4) N/A 17.0 ppb (17) N/A N/A 54.0 ppb (50) N/A N/A 16.9 μg/m3 (62) 62.0
 
Sept. 13, 2021, 5 p.m. 35.5 ppb (34) 10.6 ppb (10) N/A 24.0 ppb (23) N/A N/A 41.0 ppb (38) N/A N/A 20.5 μg/m3 (69) 69.0
 
Sept. 13, 2021, 4 p.m. 36.2 ppb (35) 12.3 ppb (12) N/A 24.0 ppb (23) N/A N/A 27.0 ppb (25) N/A N/A 22.2 μg/m3 (73) 73.0
 
Sept. 13, 2021, 3 p.m. 49.6 ppb (47) 23.5 ppb (23) N/A 26.0 ppb (25) N/A N/A 13.0 ppb (13) N/A N/A 23.5 μg/m3 (75) 75.0
 
Sept. 13, 2021, 2 p.m. 39.9 ppb (38) 19.5 ppb (19) N/A 20.0 ppb (19) N/A N/A 8.0 ppb (8) N/A N/A 19.3 μg/m3 (67) 67.0
 
Sept. 13, 2021, 1 p.m. 20.1 ppb (19) 4.2 ppb (4) N/A 16.0 ppb (16) N/A N/A 6.0 ppb (6) N/A N/A 12.0 μg/m3 (50) 50.0
 
Sept. 13, 2021, noon 15.8 ppb (15) 1.4 ppb (2) N/A 14.0 ppb (14) N/A N/A 8.0 ppb (8) N/A N/A 13.2 μg/m3 (54) 54.0
 
Sept. 13, 2021, 11 a.m. 14.4 ppb (14) 0.9 ppb (1) N/A 13.0 ppb (13) N/A N/A 12.0 ppb (12) N/A N/A 12.0 μg/m3 (50) 50.0
 
Sept. 13, 2021, 10 a.m. 14.7 ppb (14) 0.7 ppb (1) N/A 14.0 ppb (14) N/A N/A 12.0 ppb (12) N/A N/A 11.9 μg/m3 (50) 50.0
 
Sept. 13, 2021, 9 a.m. 16.1 ppb (16) 0.6 ppb (1) N/A 15.0 ppb (15) N/A N/A 12.0 ppb (12) N/A N/A 12.2 μg/m3 (52) 52.0
 
Sept. 13, 2021, 8 a.m. 15.7 ppb (15) 0.7 ppb (1) N/A 15.0 ppb (15) N/A N/A 13.0 ppb (13) N/A N/A 11.9 μg/m3 (50) 50.0
 
Sept. 13, 2021, 7 a.m. 17.8 ppb (17) 0.5 ppb (1) N/A 17.0 ppb (17) N/A N/A 13.0 ppb (13) N/A N/A 11.9 μg/m3 (50) 50.0
 
Sept. 13, 2021, 6 a.m. 20.1 ppb (19) 0.7 ppb (1) N/A 19.0 ppb (18) N/A N/A 12.0 ppb (12) N/A N/A 20.5 μg/m3 (69) 69.0
 
Sept. 13, 2021, 5 a.m. 15.3 ppb (15) 0.5 ppb (1) N/A 15.0 ppb (15) N/A N/A 18.0 ppb (17) N/A N/A 15.9 μg/m3 (59) 59.0
 
Sept. 13, 2021, 4 a.m. 14.5 ppb (14) 0.5 ppb (1) N/A 14.0 ppb (14) N/A N/A 23.0 ppb (22) N/A N/A 14.3 μg/m3 (56) 56.0
 
Sept. 13, 2021, 3 a.m. 14.0 ppb (14) 0.3 ppb (1) N/A 14.0 ppb (14) N/A N/A 32.0 ppb (30) N/A N/A 13.4 μg/m3 (54) 54.0
 
Sept. 13, 2021, 2 a.m. 12.4 ppb (12) 0.4 ppb (1) N/A 12.0 ppb (12) N/A N/A 42.0 ppb (39) N/A N/A 10.5 μg/m3 (44) 44.0
 
Sept. 13, 2021, 1 a.m. 5.5 ppb (6) 0.3 ppb (1) N/A 5.0 ppb (5) N/A N/A 61.0 ppb (71) N/A N/A 13.4 μg/m3 (54) 71.0
 
Sept. 13, 2021, midnight 6.2 ppb (6) 0.5 ppb (1) N/A 6.0 ppb (6) N/A N/A 69.0 ppb (97) N/A N/A 15.6 μg/m3 (59) 97.0
 
Sept. 12, 2021, 11 p.m. 6.3 ppb (6) 0.5 ppb (1) N/A 6.0 ppb (6) N/A N/A 75.0 ppb (104) N/A N/A 9.8 μg/m3 (41) 104.0
 
Sept. 12, 2021, 10 p.m. 4.1 ppb (4) 0.4 ppb (1) N/A 4.0 ppb (4) N/A N/A 68.0 ppb (94) N/A N/A 9.3 μg/m3 (39) 94.0