ID: 1894

AQSQID: 060371302

Site Name: Compton

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

Updated: July 25, 2021, 8:53 p.m.

Location: Compton (E Compton), CA

Reporting: True, Located: True

Current AQI: 53.0

Compton (E Compton) CA, US: 33.9014, -118.205

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
July 25, 2021, 7 p.m. 5.6 ppb (6) 0.8 ppb (1) N/A 5.0 ppb (5) N/A N/A 51.0 ppb (48) 0.11 ppb (2) N/A 12.9 μg/m3 (53) 53.0
 
July 25, 2021, 6 p.m. 5.9 ppb (6) 1.3 ppb (2) N/A 5.0 ppb (5) N/A N/A 45.0 ppb (42) 0.1 ppb (2) N/A 12.0 μg/m3 (50) 50.0
 
July 25, 2021, 5 p.m. 6.7 ppb (7) 1.7 ppb (2) N/A 5.0 ppb (5) N/A N/A 36.0 ppb (34) 0.1 ppb (2) N/A 14.9 μg/m3 (57) 57.0
 
July 25, 2021, 4 p.m. 8.7 ppb (9) 2.2 ppb (3) N/A 7.0 ppb (7) N/A N/A 29.0 ppb (27) 0.1 ppb (2) N/A 14.2 μg/m3 (56) 56.0
 
July 25, 2021, 3 p.m. 9.9 ppb (10) 1.9 ppb (2) N/A 8.0 ppb (8) N/A N/A 26.0 ppb (25) 0.1 ppb (2) N/A 13.6 μg/m3 (55) 55.0
 
July 25, 2021, 2 p.m. 8.2 ppb (8) 1.1 ppb (2) N/A 7.0 ppb (7) N/A N/A 25.0 ppb (24) 0.13 ppb (2) N/A 13.6 μg/m3 (55) 55.0
 
July 25, 2021, 1 p.m. 6.2 ppb (6) 0.3 ppb (1) N/A 6.0 ppb (6) N/A N/A 24.0 ppb (23) 0.13 ppb (2) N/A 17.3 μg/m3 (62) 62.0
 
July 25, 2021, noon 6.0 ppb (6) 0.2 ppb (1) N/A 6.0 ppb (6) N/A N/A 24.0 ppb (23) 0.12 ppb (2) N/A 11.3 μg/m3 (48) 48.0
 
July 25, 2021, 11 a.m. 5.7 ppb (6) 0.0 ppb (0) N/A 6.0 ppb (6) N/A N/A 26.0 ppb (25) 0.11 ppb (2) N/A 11.0 μg/m3 (46) 46.0
 
July 25, 2021, 10 a.m. 7.0 ppb (7) 0.1 ppb (1) N/A 7.0 ppb (7) N/A N/A 26.0 ppb (25) 0.13 ppb (2) N/A 11.0 μg/m3 (46) 46.0
 
July 25, 2021, 9 a.m. 7.0 ppb (7) 0.0 ppb (0) N/A 7.0 ppb (7) N/A N/A 27.0 ppb (25) 0.13 ppb (2) N/A 12.9 μg/m3 (53) 53.0
 
July 25, 2021, 8 a.m. 4.7 ppb (5) 0.0 ppb (0) N/A 5.0 ppb (5) N/A N/A 30.0 ppb (28) 0.12 ppb (2) N/A 14.4 μg/m3 (56) 56.0
 
July 25, 2021, 7 a.m. 4.0 ppb (4) -0.1 ppb (0) N/A 4.0 ppb (4) N/A N/A 32.0 ppb (30) 0.12 ppb (2) N/A 11.8 μg/m3 (50) 50.0
 
July 25, 2021, 6 a.m. 3.0 ppb (3) -0.1 ppb (0) N/A 3.0 ppb (3) N/A N/A 33.0 ppb (31) 0.1 ppb (2) N/A 11.8 μg/m3 (50) 50.0
 
July 25, 2021, 5 a.m. 3.3 ppb (4) -0.1 ppb (0) N/A 3.0 ppb (3) N/A N/A 33.0 ppb (31) 0.11 ppb (2) N/A 13.2 μg/m3 (54) 54.0
 
July 25, 2021, 4 a.m. 2.9 ppb (3) -0.1 ppb (0) N/A 3.0 ppb (3) N/A N/A 36.0 ppb (34) 0.09 ppb (2) N/A 11.0 μg/m3 (46) 46.0
 
July 25, 2021, 3 a.m. 3.7 ppb (4) -0.1 ppb (0) N/A 4.0 ppb (4) N/A N/A 38.0 ppb (36) 0.11 ppb (2) N/A 12.7 μg/m3 (53) 53.0
 
July 25, 2021, 2 a.m. 3.7 ppb (4) 0.0 ppb (0) N/A 4.0 ppb (4) N/A N/A 39.0 ppb (37) 0.11 ppb (2) N/A 10.0 μg/m3 (42) 42.0
 
July 25, 2021, 1 a.m. 3.6 ppb (4) 0.1 ppb (1) N/A 4.0 ppb (4) N/A N/A 41.0 ppb (38) 0.11 ppb (2) N/A 11.0 μg/m3 (46) 46.0
 
July 25, 2021, midnight 4.1 ppb (4) 0.3 ppb (1) N/A 4.0 ppb (4) N/A N/A 43.0 ppb (40) 0.11 ppb (2) N/A 10.6 μg/m3 (45) 45.0
 
July 24, 2021, 11 p.m. 3.8 ppb (4) 0.3 ppb (1) N/A 3.0 ppb (3) N/A N/A 48.0 ppb (45) 0.1 ppb (2) N/A 15.6 μg/m3 (59) 59.0
 
July 24, 2021, 10 p.m. 4.2 ppb (4) 0.3 ppb (1) N/A 4.0 ppb (4) N/A N/A 49.0 ppb (46) 0.12 ppb (2) N/A 15.4 μg/m3 (58) 58.0
 
July 24, 2021, 9 p.m. 4.7 ppb (5) 0.4 ppb (1) N/A 4.0 ppb (4) N/A N/A 52.0 ppb (49) 0.12 ppb (2) N/A 21.8 μg/m3 (72) 72.0
 
July 24, 2021, 8 p.m. 5.9 ppb (6) 0.8 ppb (1) N/A 5.0 ppb (5) N/A N/A 52.0 ppb (49) 0.13 ppb (2) N/A 23.0 μg/m3 (74) 74.0
 
July 24, 2021, 7 p.m. 9.9 ppb (10) 1.9 ppb (2) N/A 8.0 ppb (8) N/A N/A 45.0 ppb (42) 0.15 ppb (2) N/A 21.6 μg/m3 (71) 71.0
 
July 24, 2021, 6 p.m. 16.2 ppb (16) 4.6 ppb (5) N/A 12.0 ppb (12) N/A N/A 36.0 ppb (34) 0.16 ppb (3) N/A 17.1 μg/m3 (62) 62.0
 
July 24, 2021, 5 p.m. 18.2 ppb (18) 5.8 ppb (6) N/A 13.0 ppb (13) N/A N/A 31.0 ppb (29) 0.17 ppb (3) N/A 21.8 μg/m3 (72) 72.0
 
July 24, 2021, 4 p.m. 17.0 ppb (17) 5.4 ppb (6) N/A 12.0 ppb (12) N/A N/A 26.0 ppb (25) 0.15 ppb (2) N/A 20.6 μg/m3 (69) 69.0
 
July 24, 2021, 3 p.m. 13.4 ppb (13) 2.8 ppb (3) N/A 11.0 ppb (11) N/A N/A 24.0 ppb (23) 0.13 ppb (2) N/A 23.5 μg/m3 (75) 75.0
 
July 24, 2021, 2 p.m. 19.6 ppb (19) 4.2 ppb (4) N/A 15.0 ppb (15) N/A N/A 18.0 ppb (17) 0.15 ppb (2) N/A 20.8 μg/m3 (70) 70.0
 
July 24, 2021, 1 p.m. 12.3 ppb (12) 0.9 ppb (1) N/A 11.0 ppb (11) N/A N/A 17.0 ppb (16) 0.16 ppb (3) N/A 19.3 μg/m3 (67) 67.0
 
July 24, 2021, noon 11.0 ppb (11) 0.5 ppb (1) N/A 11.0 ppb (11) N/A N/A 17.0 ppb (16) 0.15 ppb (2) N/A 13.9 μg/m3 (55) 55.0
 
July 24, 2021, 11 a.m. 6.9 ppb (7) 0.1 ppb (1) N/A 7.0 ppb (7) N/A N/A 24.0 ppb (23) 0.1 ppb (2) N/A 15.1 μg/m3 (58) 58.0
 
July 24, 2021, 10 a.m. 8.0 ppb (8) 0.3 ppb (1) N/A 8.0 ppb (8) N/A N/A 23.0 ppb (22) 0.11 ppb (2) N/A 14.4 μg/m3 (56) 56.0
 
July 24, 2021, 9 a.m. 6.5 ppb (7) 0.0 ppb (0) N/A 6.0 ppb (6) N/A N/A 26.0 ppb (25) 0.14 ppb (2) N/A 12.0 μg/m3 (50) 50.0
 
July 24, 2021, 8 a.m. 6.2 ppb (6) 0.1 ppb (1) N/A 6.0 ppb (6) N/A N/A 27.0 ppb (25) 0.14 ppb (2) N/A 19.1 μg/m3 (66) 66.0
 
July 24, 2021, 7 a.m. 3.5 ppb (4) -0.1 ppb (0) N/A 4.0 ppb (4) N/A N/A 31.0 ppb (29) 0.09 ppb (2) N/A 15.4 μg/m3 (58) 58.0
 
July 24, 2021, 6 a.m. 3.9 ppb (4) -0.1 ppb (0) N/A 4.0 ppb (4) N/A N/A 31.0 ppb (29) 0.09 ppb (2) N/A 15.8 μg/m3 (59) 59.0
 
July 24, 2021, 5 a.m. 5.9 ppb (6) -0.1 ppb (0) N/A 6.0 ppb (6) N/A N/A 31.0 ppb (29) 0.12 ppb (2) N/A 14.1 μg/m3 (56) 56.0
 
July 24, 2021, 4 a.m. 5.3 ppb (5) 0.0 ppb (0) N/A 5.0 ppb (5) N/A N/A 33.0 ppb (31) 0.12 ppb (2) N/A 16.8 μg/m3 (61) 61.0
 
July 24, 2021, 3 a.m. 4.9 ppb (5) 0.0 ppb (0) N/A 5.0 ppb (5) N/A N/A 34.0 ppb (32) 0.12 ppb (2) N/A 16.3 μg/m3 (60) 60.0
 
July 24, 2021, 2 a.m. 3.6 ppb (4) 0.1 ppb (1) N/A 3.0 ppb (3) N/A N/A 36.0 ppb (34) 0.1 ppb (2) N/A 13.1 μg/m3 (54) 54.0
 
July 24, 2021, 1 a.m. 3.8 ppb (4) 0.3 ppb (1) N/A 4.0 ppb (4) N/A N/A 38.0 ppb (36) 0.09 ppb (2) N/A 14.4 μg/m3 (56) 56.0
 
July 24, 2021, midnight 4.7 ppb (5) 0.7 ppb (1) N/A 4.0 ppb (4) N/A N/A 40.0 ppb (38) 0.11 ppb (2) N/A 16.9 μg/m3 (62) 62.0
 
July 23, 2021, 11 p.m. 4.9 ppb (5) 0.7 ppb (1) N/A 4.0 ppb (4) N/A N/A 45.0 ppb (42) 0.11 ppb (2) N/A 17.1 μg/m3 (62) 62.0
 
July 23, 2021, 10 p.m. 5.2 ppb (5) 0.7 ppb (1) N/A 5.0 ppb (5) N/A N/A 48.0 ppb (45) 0.12 ppb (2) N/A 19.4 μg/m3 (67) 67.0
 
July 23, 2021, 9 p.m. 7.2 ppb (7) 1.4 ppb (2) N/A 6.0 ppb (6) N/A N/A 48.0 ppb (45) 0.13 ppb (2) N/A 25.5 μg/m3 (80) 80.0
 
July 23, 2021, 8 p.m. 19.1 ppb (19) 5.1 ppb (5) N/A 14.0 ppb (14) N/A N/A 38.0 ppb (36) 0.15 ppb (2) N/A 26.0 μg/m3 (81) 81.0
 
July 23, 2021, 7 p.m. 20.6 ppb (20) 6.5 ppb (7) N/A 14.0 ppb (14) N/A N/A 32.0 ppb (30) 0.14 ppb (2) N/A 22.6 μg/m3 (74) 74.0
 
July 23, 2021, 6 p.m. 19.3 ppb (19) 6.7 ppb (7) N/A 13.0 ppb (13) N/A N/A 28.0 ppb (26) 0.14 ppb (2) N/A 22.3 μg/m3 (73) 73.0
 
July 23, 2021, 5 p.m. 19.9 ppb (19) 7.5 ppb (8) N/A 12.0 ppb (12) N/A N/A 24.0 ppb (23) 0.15 ppb (2) N/A 25.7 μg/m3 (80) 80.0
 
July 23, 2021, 4 p.m. 20.3 ppb (20) 8.1 ppb (8) N/A 12.0 ppb (12) N/A N/A 20.0 ppb (19) 0.15 ppb (2) N/A 18.6 μg/m3 (65) 65.0
 
July 23, 2021, 3 p.m. 16.1 ppb (16) 5.3 ppb (5) N/A 11.0 ppb (11) N/A N/A 18.0 ppb (17) 0.14 ppb (2) N/A 22.3 μg/m3 (73) 73.0
 
July 23, 2021, 2 p.m. 10.2 ppb (10) 2.3 ppb (3) N/A 8.0 ppb (8) N/A N/A 20.0 ppb (19) 0.12 ppb (2) N/A 14.9 μg/m3 (57) 57.0
 
July 23, 2021, 1 p.m. 11.9 ppb (12) 1.4 ppb (2) N/A 11.0 ppb (11) N/A N/A 15.0 ppb (14) 0.15 ppb (2) N/A 11.8 μg/m3 (50) 50.0
 
July 23, 2021, noon 7.8 ppb (8) 0.7 ppb (1) N/A 7.0 ppb (7) N/A N/A 17.0 ppb (16) 0.1 ppb (2) N/A 13.4 μg/m3 (54) 54.0
 
July 23, 2021, 11 a.m. 5.9 ppb (6) 0.3 ppb (1) N/A 6.0 ppb (6) N/A N/A 20.0 ppb (19) 0.07 ppb (2) N/A 9.8 μg/m3 (41) 41.0
 
July 23, 2021, 10 a.m. 6.2 ppb (6) 0.2 ppb (1) N/A 6.0 ppb (6) N/A N/A 19.0 ppb (18) 0.07 ppb (2) N/A 14.9 μg/m3 (57) 57.0
 
July 23, 2021, 9 a.m. 4.5 ppb (5) 0.1 ppb (1) N/A 4.0 ppb (4) N/A N/A 21.0 ppb (20) 0.07 ppb (2) N/A 12.2 μg/m3 (52) 52.0
 
July 23, 2021, 8 a.m. 4.1 ppb (4) 0.1 ppb (1) N/A 4.0 ppb (4) N/A N/A 22.0 ppb (21) 0.08 ppb (2) N/A 14.1 μg/m3 (56) 56.0
 
July 23, 2021, 7 a.m. 4.3 ppb (5) 0.1 ppb (1) N/A 4.0 ppb (4) N/A N/A 23.0 ppb (22) 0.08 ppb (2) N/A 12.7 μg/m3 (53) 53.0
 
July 23, 2021, 6 a.m. 4.6 ppb (5) 0.0 ppb (0) N/A 5.0 ppb (5) N/A N/A 23.0 ppb (22) 0.09 ppb (2) N/A 12.5 μg/m3 (52) 52.0
 
July 23, 2021, 5 a.m. 3.5 ppb (4) 0.1 ppb (1) N/A 3.0 ppb (3) N/A N/A 25.0 ppb (24) 0.09 ppb (2) N/A 16.8 μg/m3 (61) 61.0
 
July 23, 2021, 4 a.m. 4.4 ppb (5) 0.0 ppb (0) N/A 4.0 ppb (4) N/A N/A 24.0 ppb (23) 0.07 ppb (2) N/A 14.4 μg/m3 (56) 56.0
 
July 23, 2021, 3 a.m. 8.3 ppb (8) 0.1 ppb (1) N/A 8.0 ppb (8) N/A N/A 21.0 ppb (20) 0.08 ppb (2) N/A 17.1 μg/m3 (62) 62.0
 
July 23, 2021, 2 a.m. 9.6 ppb (10) 0.5 ppb (1) N/A 9.0 ppb (9) N/A N/A 23.0 ppb (22) 0.11 ppb (2) N/A 12.5 μg/m3 (52) 52.0
 
July 23, 2021, 1 a.m. 11.4 ppb (11) 1.9 ppb (2) N/A 10.0 ppb (10) N/A N/A 26.0 ppb (25) 0.11 ppb (2) N/A 15.6 μg/m3 (59) 59.0
 
July 23, 2021, midnight 15.8 ppb (15) 4.3 ppb (5) N/A 11.0 ppb (11) N/A N/A 27.0 ppb (25) 0.11 ppb (2) N/A 19.6 μg/m3 (67) 67.0
 
July 22, 2021, 11 p.m. 8.6 ppb (9) 2.1 ppb (2) N/A 6.0 ppb (6) N/A N/A 33.0 ppb (31) 0.11 ppb (2) N/A 18.9 μg/m3 (66) 66.0
 
July 22, 2021, 10 p.m. 15.7 ppb (15) 4.6 ppb (5) N/A 11.0 ppb (11) N/A N/A 31.0 ppb (29) 0.12 ppb (2) N/A 21.1 μg/m3 (70) 70.0
 
July 22, 2021, 9 p.m. 12.3 ppb (12) 3.7 ppb (4) N/A 9.0 ppb (9) N/A N/A 33.0 ppb (31) 0.09 ppb (2) N/A 15.6 μg/m3 (59) 59.0
 
July 22, 2021, 8 p.m. 12.9 ppb (13) 4.3 ppb (5) N/A 9.0 ppb (9) N/A N/A 31.0 ppb (29) 0.09 ppb (2) N/A 13.5 μg/m3 (54) 54.0
 
July 22, 2021, 7 p.m. 7.7 ppb (8) 2.2 ppb (3) N/A 6.0 ppb (6) N/A N/A 35.0 ppb (33) 0.09 ppb (2) N/A 19.1 μg/m3 (66) 66.0
 
July 22, 2021, 6 p.m. 7.1 ppb (7) 2.1 ppb (2) N/A 5.0 ppb (5) N/A N/A 32.0 ppb (30) 0.09 ppb (2) N/A 17.9 μg/m3 (64) 64.0
 
July 22, 2021, 5 p.m. 8.2 ppb (8) 2.6 ppb (3) N/A 6.0 ppb (6) N/A N/A 29.0 ppb (27) 0.08 ppb (2) N/A 17.9 μg/m3 (64) 64.0
 
July 22, 2021, 4 p.m. 5.6 ppb (6) 1.9 ppb (2) N/A 4.0 ppb (4) N/A N/A 27.0 ppb (25) 0.08 ppb (2) N/A 16.1 μg/m3 (60) 60.0
 
July 22, 2021, 3 p.m. 7.1 ppb (7) 2.2 ppb (3) N/A 5.0 ppb (5) N/A N/A 22.0 ppb (21) 0.1 ppb (2) N/A 12.9 μg/m3 (53) 53.0
 
July 22, 2021, 2 p.m. 9.0 ppb (9) 2.1 ppb (2) N/A 7.0 ppb (7) N/A N/A 20.0 ppb (19) 0.11 ppb (2) N/A 13.2 μg/m3 (54) 54.0
 
July 22, 2021, 1 p.m. 10.8 ppb (11) 1.0 ppb (1) N/A 10.0 ppb (10) N/A N/A 16.0 ppb (15) 0.15 ppb (2) N/A 11.0 μg/m3 (46) 46.0
 
July 22, 2021, noon 11.0 ppb (11) 0.7 ppb (1) N/A 10.0 ppb (10) N/A N/A 16.0 ppb (15) 0.11 ppb (2) N/A 8.1 μg/m3 (34) 34.0
 
July 22, 2021, 11 a.m. 10.5 ppb (10) 0.1 ppb (1) N/A 10.0 ppb (10) N/A N/A 17.0 ppb (16) 0.07 ppb (2) N/A 16.6 μg/m3 (61) 61.0
 
July 22, 2021, 10 a.m. 7.8 ppb (8) 0.3 ppb (1) N/A 8.0 ppb (8) N/A N/A 21.0 ppb (20) 0.06 ppb (2) N/A 16.8 μg/m3 (61) 61.0
 
July 22, 2021, 9 a.m. 7.2 ppb (7) 0.3 ppb (1) N/A 7.0 ppb (7) N/A N/A 23.0 ppb (22) 0.06 ppb (2) N/A 11.5 μg/m3 (48) 48.0
 
July 22, 2021, 8 a.m. 14.4 ppb (14) 0.5 ppb (1) N/A 14.0 ppb (14) N/A N/A 16.0 ppb (15) 0.09 ppb (2) N/A 18.8 μg/m3 (66) 66.0
 
July 22, 2021, 7 a.m. 13.6 ppb (13) 0.0 ppb (0) N/A 14.0 ppb (14) N/A N/A 19.0 ppb (18) 0.2 ppb (3) N/A 16.3 μg/m3 (60) 60.0
 
July 22, 2021, 6 a.m. 10.7 ppb (11) 0.0 ppb (0) N/A 11.0 ppb (11) N/A N/A 22.0 ppb (21) 0.17 ppb (3) N/A 18.8 μg/m3 (66) 66.0
 
July 22, 2021, 5 a.m. 7.7 ppb (8) 0.0 ppb (0) N/A 8.0 ppb (8) N/A N/A 26.0 ppb (25) 0.13 ppb (2) N/A 18.8 μg/m3 (66) 66.0
 
July 22, 2021, 4 a.m. 7.4 ppb (7) 0.0 ppb (0) N/A 7.0 ppb (7) N/A N/A 28.0 ppb (26) 0.16 ppb (3) N/A 13.4 μg/m3 (54) 54.0
 
July 22, 2021, 3 a.m. 4.8 ppb (5) -0.1 ppb (0) N/A 5.0 ppb (5) N/A N/A 34.0 ppb (32) 0.12 ppb (2) N/A 13.2 μg/m3 (54) 54.0
 
July 22, 2021, 2 a.m. 3.9 ppb (4) 0.1 ppb (1) N/A 4.0 ppb (4) N/A N/A 37.0 ppb (35) 0.1 ppb (2) N/A 14.2 μg/m3 (56) 56.0
 
July 22, 2021, 1 a.m. 4.0 ppb (4) 0.3 ppb (1) N/A 4.0 ppb (4) N/A N/A 40.0 ppb (38) 0.09 ppb (2) N/A 10.1 μg/m3 (43) 43.0
 
July 22, 2021, midnight 4.2 ppb (4) 0.6 ppb (1) N/A 4.0 ppb (4) N/A N/A 40.0 ppb (38) 0.09 ppb (2) N/A 15.4 μg/m3 (58) 58.0
 
July 21, 2021, 11 p.m. 4.0 ppb (4) 0.7 ppb (1) N/A 3.0 ppb (3) N/A N/A 36.0 ppb (34) 0.09 ppb (2) N/A 11.4 μg/m3 (48) 48.0
 
July 21, 2021, 10 p.m. 5.5 ppb (6) 1.2 ppb (2) N/A 4.0 ppb (4) N/A N/A 40.0 ppb (38) 0.1 ppb (2) N/A 16.7 μg/m3 (61) 61.0
 
July 21, 2021, 9 p.m. 8.4 ppb (8) 1.5 ppb (2) N/A 7.0 ppb (7) N/A N/A 45.0 ppb (42) 0.13 ppb (2) N/A 16.7 μg/m3 (61) 61.0
 
July 21, 2021, 8 p.m. 19.8 ppb (19) 5.0 ppb (5) N/A 15.0 ppb (15) N/A N/A 39.0 ppb (37) 0.16 ppb (3) N/A 22.1 μg/m3 (73) 73.0
 
July 21, 2021, 7 p.m. 29.7 ppb (29) 9.6 ppb (10) N/A 20.0 ppb (19) N/A N/A 29.0 ppb (27) 0.14 ppb (2) N/A 15.9 μg/m3 (59) 59.0
 
July 21, 2021, 6 p.m. 37.0 ppb (35) 13.2 ppb (13) N/A 24.0 ppb (23) N/A N/A 24.0 ppb (23) 0.19 ppb (3) N/A 22.3 μg/m3 (73) 73.0
 
July 21, 2021, 5 p.m. 26.4 ppb (25) 9.6 ppb (10) N/A 17.0 ppb (17) N/A N/A 23.0 ppb (22) 0.19 ppb (3) N/A 19.6 μg/m3 (67) 67.0
 
July 21, 2021, 4 p.m. 23.2 ppb (22) 9.3 ppb (9) N/A 14.0 ppb (14) N/A N/A 20.0 ppb (19) 0.2 ppb (3) N/A 17.1 μg/m3 (62) 62.0
 
July 21, 2021, 3 p.m. 28.0 ppb (27) 12.4 ppb (12) N/A 16.0 ppb (16) N/A N/A 13.0 ppb (13) 0.28 ppb (4) N/A 17.1 μg/m3 (62) 62.0
 
July 21, 2021, 2 p.m. 19.4 ppb (19) 6.9 ppb (7) N/A 13.0 ppb (13) N/A N/A 11.0 ppb (11) 0.26 ppb (4) N/A 16.3 μg/m3 (60) 60.0
 
July 21, 2021, 1 p.m. 13.2 ppb (13) 1.6 ppb (2) N/A 12.0 ppb (12) N/A N/A 10.0 ppb (10) 0.21 ppb (3) N/A 10.8 μg/m3 (46) 46.0
 
July 21, 2021, noon 9.1 ppb (9) 0.3 ppb (1) N/A 9.0 ppb (9) N/A N/A 12.0 ppb (12) 0.13 ppb (2) N/A 11.5 μg/m3 (48) 48.0
 
July 21, 2021, 11 a.m. 8.5 ppb (9) 0.1 ppb (1) N/A 8.0 ppb (8) N/A N/A 14.0 ppb (13) 0.08 ppb (2) N/A 11.8 μg/m3 (50) 50.0
 
July 21, 2021, 10 a.m. 6.5 ppb (7) 0.0 ppb (0) N/A 6.0 ppb (6) N/A N/A 16.0 ppb (15) 0.06 ppb (2) N/A 15.4 μg/m3 (58) 58.0
 
July 21, 2021, 9 a.m. 6.7 ppb (7) 0.1 ppb (1) N/A 7.0 ppb (7) N/A N/A 16.0 ppb (15) 0.11 ppb (2) N/A 12.9 μg/m3 (53) 53.0
 
July 21, 2021, 8 a.m. 6.7 ppb (7) 0.1 ppb (1) N/A 7.0 ppb (7) N/A N/A 15.0 ppb (14) 0.13 ppb (2) N/A 13.9 μg/m3 (55) 55.0
 
July 21, 2021, 7 a.m. 9.1 ppb (9) 0.4 ppb (1) N/A 9.0 ppb (9) N/A N/A 14.0 ppb (13) 0.17 ppb (3) N/A 14.4 μg/m3 (56) 56.0
 
July 21, 2021, 6 a.m. 7.4 ppb (7) 0.1 ppb (1) N/A 7.0 ppb (7) N/A N/A 15.0 ppb (14) 0.13 ppb (2) N/A 11.8 μg/m3 (50) 50.0
 
July 21, 2021, 5 a.m. 4.1 ppb (4) -0.1 ppb (0) N/A 4.0 ppb (4) N/A N/A 22.0 ppb (21) 0.08 ppb (2) N/A 14.4 μg/m3 (56) 56.0
 
July 21, 2021, 4 a.m. 3.2 ppb (4) -0.1 ppb (0) N/A 3.0 ppb (3) N/A N/A 25.0 ppb (24) 0.08 ppb (2) N/A 10.0 μg/m3 (42) 42.0
 
July 21, 2021, 3 a.m. 3.5 ppb (4) -0.1 ppb (0) N/A 4.0 ppb (4) N/A N/A 28.0 ppb (26) 0.09 ppb (2) N/A 11.5 μg/m3 (48) 48.0
 
July 21, 2021, 2 a.m. 4.7 ppb (5) 0.1 ppb (1) N/A 5.0 ppb (5) N/A N/A 29.0 ppb (27) 0.1 ppb (2) N/A 10.6 μg/m3 (45) 45.0
 
July 21, 2021, 1 a.m. 6.9 ppb (7) 1.0 ppb (1) N/A 6.0 ppb (6) N/A N/A 29.0 ppb (27) 0.09 ppb (2) N/A 12.3 μg/m3 (52) 52.0
 
July 21, 2021, midnight 4.4 ppb (5) 0.8 ppb (1) N/A 4.0 ppb (4) N/A N/A 36.0 ppb (34) 0.09 ppb (2) N/A 11.8 μg/m3 (50) 50.0
 
July 20, 2021, 11 p.m. 3.9 ppb (4) 0.7 ppb (1) N/A 3.0 ppb (3) N/A N/A 33.0 ppb (31) 0.08 ppb (2) N/A 12.7 μg/m3 (53) 53.0
 
July 20, 2021, 10 p.m. 4.7 ppb (5) 0.8 ppb (1) N/A 4.0 ppb (4) N/A N/A 33.0 ppb (31) 0.09 ppb (2) N/A 11.1 μg/m3 (47) 47.0
 
July 20, 2021, 9 p.m. 5.4 ppb (6) 1.0 ppb (1) N/A 4.0 ppb (4) N/A N/A 42.0 ppb (39) 0.11 ppb (2) N/A 12.2 μg/m3 (52) 52.0
 
July 20, 2021, 8 p.m. 6.2 ppb (6) 1.2 ppb (2) N/A 5.0 ppb (5) N/A N/A 44.0 ppb (41) 0.11 ppb (2) N/A 13.4 μg/m3 (54) 54.0
 
July 20, 2021, 7 p.m. 6.5 ppb (7) 1.1 ppb (2) N/A 5.0 ppb (5) N/A N/A 48.0 ppb (45) 0.12 ppb (2) N/A 15.9 μg/m3 (59) 59.0
 
July 20, 2021, 6 p.m. 16.0 ppb (16) 3.4 ppb (4) N/A 13.0 ppb (13) N/A N/A 45.0 ppb (42) 0.22 ppb (3) N/A 16.6 μg/m3 (61) 61.0
 
July 20, 2021, 5 p.m. 18.3 ppb (18) 4.6 ppb (5) N/A 14.0 ppb (14) N/A N/A 37.0 ppb (35) 0.23 ppb (3) N/A 15.4 μg/m3 (58) 58.0
 
July 20, 2021, 4 p.m. 14.1 ppb (14) 4.2 ppb (4) N/A 10.0 ppb (10) N/A N/A 30.0 ppb (28) 0.21 ppb (3) N/A 17.8 μg/m3 (63) 63.0
 
July 20, 2021, 3 p.m. 15.8 ppb (15) 4.9 ppb (5) N/A 11.0 ppb (11) N/A N/A 24.0 ppb (23) 0.22 ppb (3) N/A 14.9 μg/m3 (57) 57.0
 
July 20, 2021, 2 p.m. 13.9 ppb (14) 3.1 ppb (3) N/A 11.0 ppb (11) N/A N/A 23.0 ppb (22) 0.18 ppb (3) N/A 10.5 μg/m3 (44) 44.0
 
July 20, 2021, 1 p.m. 10.3 ppb (10) 0.7 ppb (1) N/A 10.0 ppb (10) N/A N/A 22.0 ppb (21) 0.17 ppb (3) N/A 9.3 μg/m3 (39) 39.0
 
July 20, 2021, noon 6.9 ppb (7) 0.3 ppb (1) N/A 7.0 ppb (7) N/A N/A 25.0 ppb (24) 0.11 ppb (2) N/A 10.0 μg/m3 (42) 42.0
 
July 20, 2021, 11 a.m. 4.8 ppb (5) 0.1 ppb (1) N/A 5.0 ppb (5) N/A N/A 24.0 ppb (23) 0.08 ppb (2) N/A 10.8 μg/m3 (46) 46.0
 
July 20, 2021, 10 a.m. 5.5 ppb (6) 0.1 ppb (1) N/A 5.0 ppb (5) N/A N/A 23.0 ppb (22) 0.08 ppb (2) N/A 13.2 μg/m3 (54) 54.0
 
July 20, 2021, 9 a.m. 9.0 ppb (9) 0.1 ppb (1) N/A 9.0 ppb (9) N/A N/A 19.0 ppb (18) 0.14 ppb (2) N/A 11.0 μg/m3 (46) 46.0
 
July 20, 2021, 8 a.m. 6.3 ppb (6) 0.0 ppb (0) N/A 6.0 ppb (6) N/A N/A 21.0 ppb (20) 0.13 ppb (2) N/A 10.8 μg/m3 (46) 46.0
 
July 20, 2021, 7 a.m. 6.4 ppb (7) -0.1 ppb (0) N/A 6.0 ppb (6) N/A N/A 23.0 ppb (22) 0.12 ppb (2) N/A 10.8 μg/m3 (46) 46.0
 
July 20, 2021, 6 a.m. 4.2 ppb (4) -0.1 ppb (0) N/A 4.0 ppb (4) N/A N/A 28.0 ppb (26) 0.09 ppb (2) N/A 9.8 μg/m3 (41) 41.0
 
July 20, 2021, 5 a.m. 3.9 ppb (4) -0.1 ppb (0) N/A 4.0 ppb (4) N/A N/A 30.0 ppb (28) 0.08 ppb (2) N/A 10.5 μg/m3 (44) 44.0
 
July 20, 2021, 4 a.m. 3.7 ppb (4) -0.2 ppb (0) N/A 4.0 ppb (4) N/A N/A 31.0 ppb (29) 0.08 ppb (2) N/A 9.1 μg/m3 (38) 38.0
 
July 20, 2021, 3 a.m. 3.8 ppb (4) -0.2 ppb (0) N/A 4.0 ppb (4) N/A N/A 33.0 ppb (31) 0.09 ppb (2) N/A 13.4 μg/m3 (54) 54.0
 
July 20, 2021, 2 a.m. 3.3 ppb (4) 0.0 ppb (0) N/A 3.0 ppb (3) N/A N/A 37.0 ppb (35) 0.08 ppb (2) N/A 12.3 μg/m3 (52) 52.0
 
July 20, 2021, 1 a.m. 3.6 ppb (4) 0.3 ppb (1) N/A 3.0 ppb (3) N/A N/A 36.0 ppb (34) 0.08 ppb (2) N/A 9.3 μg/m3 (39) 39.0
 
July 20, 2021, midnight 3.1 ppb (3) 0.4 ppb (1) N/A 3.0 ppb (3) N/A N/A 38.0 ppb (36) 0.07 ppb (2) N/A 11.3 μg/m3 (48) 48.0
 
July 19, 2021, 11 p.m. 3.8 ppb (4) 0.7 ppb (1) N/A 3.0 ppb (3) N/A N/A 39.0 ppb (37) 0.08 ppb (2) N/A 9.4 μg/m3 (40) 40.0
 
July 19, 2021, 10 p.m. 4.5 ppb (5) 0.7 ppb (1) N/A 4.0 ppb (4) N/A N/A 44.0 ppb (41) 0.09 ppb (2) N/A 15.4 μg/m3 (58) 58.0
 
July 19, 2021, 9 p.m. 5.6 ppb (6) 1.0 ppb (1) N/A 5.0 ppb (5) N/A N/A 45.0 ppb (42) 0.09 ppb (2) N/A 11.6 μg/m3 (49) 49.0
 
July 19, 2021, 8 p.m. 5.0 ppb (5) 0.6 ppb (1) N/A 4.0 ppb (4) N/A N/A 51.0 ppb (48) 0.11 ppb (2) N/A 13.9 μg/m3 (55) 55.0
 
July 19, 2021, 7 p.m. 7.4 ppb (7) 1.0 ppb (1) N/A 7.0 ppb (7) N/A N/A 55.0 ppb (51) 0.14 ppb (2) N/A 11.3 μg/m3 (48) 51.0
 
July 19, 2021, 6 p.m. 12.0 ppb (12) 2.3 ppb (3) N/A 10.0 ppb (10) N/A N/A 47.0 ppb (44) 0.18 ppb (3) N/A 13.5 μg/m3 (54) 54.0
 
July 19, 2021, 5 p.m. 18.9 ppb (18) 4.8 ppb (5) N/A 14.0 ppb (14) N/A N/A 36.0 ppb (34) 0.26 ppb (4) N/A 15.6 μg/m3 (59) 59.0
 
July 19, 2021, 4 p.m. 17.3 ppb (17) 5.3 ppb (5) N/A 12.0 ppb (12) N/A N/A 29.0 ppb (27) 0.24 ppb (3) N/A 11.0 μg/m3 (46) 46.0
 
July 19, 2021, 3 p.m. 21.3 ppb (21) 7.7 ppb (8) N/A 14.0 ppb (14) N/A N/A 19.0 ppb (18) 0.26 ppb (4) N/A 14.9 μg/m3 (57) 57.0
 
July 19, 2021, 2 p.m. 20.5 ppb (20) 6.1 ppb (6) N/A 15.0 ppb (15) N/A N/A 14.0 ppb (13) 0.24 ppb (3) N/A 12.3 μg/m3 (52) 52.0
 
July 19, 2021, 1 p.m. 13.8 ppb (14) 1.3 ppb (2) N/A 13.0 ppb (13) N/A N/A 14.0 ppb (13) 0.2 ppb (3) N/A 11.3 μg/m3 (48) 48.0
 
July 19, 2021, noon 10.9 ppb (11) 0.5 ppb (1) N/A 10.0 ppb (10) N/A N/A 15.0 ppb (14) 0.15 ppb (2) N/A 8.1 μg/m3 (34) 34.0
 
July 19, 2021, 11 a.m. 4.7 ppb (5) 0.0 ppb (0) N/A 5.0 ppb (5) N/A N/A 23.0 ppb (22) 0.07 ppb (2) N/A 10.5 μg/m3 (44) 44.0
 
July 19, 2021, 10 a.m. 15.4 ppb (15) 0.3 ppb (1) N/A 15.0 ppb (15) N/A N/A 15.0 ppb (14) 0.12 ppb (2) N/A 8.6 μg/m3 (36) 36.0
 
July 19, 2021, 9 a.m. 10.8 ppb (11) 0.1 ppb (1) N/A 11.0 ppb (11) N/A N/A 19.0 ppb (18) 0.17 ppb (3) N/A 10.5 μg/m3 (44) 44.0
 
July 19, 2021, 8 a.m. 6.0 ppb (6) 0.0 ppb (0) N/A 6.0 ppb (6) N/A N/A 25.0 ppb (24) 0.12 ppb (2) N/A 9.8 μg/m3 (41) 41.0
 
July 19, 2021, 7 a.m. 6.7 ppb (7) 0.1 ppb (1) N/A 7.0 ppb (7) N/A N/A 28.0 ppb (26) 0.17 ppb (3) N/A 10.8 μg/m3 (46) 46.0
 
July 19, 2021, 6 a.m. 5.2 ppb (5) 0.0 ppb (0) N/A 5.0 ppb (5) N/A N/A 30.0 ppb (28) 0.14 ppb (2) N/A 11.8 μg/m3 (50) 50.0
 
July 19, 2021, 5 a.m. 3.9 ppb (4) -0.1 ppb (0) N/A 4.0 ppb (4) N/A N/A 33.0 ppb (31) 0.11 ppb (2) N/A 9.8 μg/m3 (41) 41.0
 
July 19, 2021, 4 a.m. 3.6 ppb (4) -0.1 ppb (0) N/A 4.0 ppb (4) N/A N/A 35.0 ppb (33) 0.09 ppb (2) N/A 13.4 μg/m3 (54) 54.0
 
July 19, 2021, 3 a.m. 4.3 ppb (5) -0.1 ppb (0) N/A 4.0 ppb (4) N/A N/A 34.0 ppb (32) 0.09 ppb (2) N/A 9.8 μg/m3 (41) 41.0
 
July 19, 2021, 2 a.m. 5.9 ppb (6) 0.1 ppb (1) N/A 6.0 ppb (6) N/A N/A 34.0 ppb (32) 0.09 ppb (2) N/A 8.6 μg/m3 (36) 36.0
 
July 19, 2021, 1 a.m. 3.0 ppb (3) 0.2 ppb (1) N/A 3.0 ppb (3) N/A N/A 44.0 ppb (41) 0.1 ppb (2) N/A 5.7 μg/m3 (24) 41.0
 
July 19, 2021, midnight 2.8 ppb (3) 0.3 ppb (1) N/A 3.0 ppb (3) N/A N/A 44.0 ppb (41) 0.09 ppb (2) N/A 8.1 μg/m3 (34) 41.0
 
July 18, 2021, 11 p.m. 3.5 ppb (4) 0.5 ppb (1) N/A 3.0 ppb (3) N/A N/A 44.0 ppb (41) 0.09 ppb (2) N/A 11.6 μg/m3 (49) 49.0
 
July 18, 2021, 10 p.m. 2.9 ppb (3) 0.3 ppb (1) N/A 3.0 ppb (3) N/A N/A 44.0 ppb (41) 0.1 ppb (2) N/A 11.1 μg/m3 (47) 47.0
 
July 18, 2021, 9 p.m. 2.8 ppb (3) 0.4 ppb (1) N/A 2.0 ppb (2) N/A N/A 41.0 ppb (38) 0.09 ppb (2) N/A 11.1 μg/m3 (47) 47.0
 
July 18, 2021, 8 p.m. 4.4 ppb (5) 0.6 ppb (1) N/A 4.0 ppb (4) N/A N/A 44.0 ppb (41) 0.11 ppb (2) N/A 11.1 μg/m3 (47) 47.0