ID: 1894

AQSQID: 060371302

Site Name: Compton

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

Updated: Sept. 28, 2021, 8 p.m.

Location: Compton (E Compton), CA

Reporting: True, Located: True

Current AQI: 31.0

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
Sept. 14, 2021, 6 p.m. 24.2 ppb (23) 6.6 ppb (7) N/A 18.0 ppb (17) N/A N/A 36.0 ppb (34) 0.27 ppb (4) N/A 13.2 μg/m3 (54) 54.0
 
Sept. 14, 2021, 5 p.m. 18.0 ppb (17) 5.1 ppb (5) N/A 13.0 ppb (13) N/A N/A 33.0 ppb (31) 0.24 ppb (3) N/A 15.3 μg/m3 (58) 58.0
 
Sept. 14, 2021, 4 p.m. 15.6 ppb (15) 4.4 ppb (5) N/A 11.0 ppb (11) N/A N/A 31.0 ppb (29) 0.22 ppb (3) N/A 16.3 μg/m3 (60) 60.0
 
Sept. 14, 2021, 3 p.m. 11.5 ppb (11) 2.7 ppb (3) N/A 9.0 ppb (9) N/A N/A 31.0 ppb (29) 0.18 ppb (3) N/A 8.6 μg/m3 (36) 36.0
 
Sept. 14, 2021, 2 p.m. 15.2 ppb (15) 2.1 ppb (2) N/A 13.0 ppb (13) N/A N/A 22.0 ppb (21) 0.2 ppb (3) N/A 17.8 μg/m3 (63) 63.0
 
Sept. 14, 2021, 1 p.m. 14.2 ppb (14) 1.1 ppb (2) N/A 13.0 ppb (13) N/A N/A 16.0 ppb (15) 0.22 ppb (3) N/A 19.5 μg/m3 (67) 67.0
 
Sept. 14, 2021, noon 13.0 ppb (13) 0.8 ppb (1) N/A 12.0 ppb (12) N/A N/A 16.0 ppb (15) 0.23 ppb (3) N/A 21.3 μg/m3 (71) 71.0
 
Sept. 14, 2021, 11 a.m. 13.5 ppb (13) 0.7 ppb (1) N/A 13.0 ppb (13) N/A N/A 17.0 ppb (16) 0.22 ppb (3) N/A 27.6 μg/m3 (84) 84.0
 
Sept. 14, 2021, 10 a.m. 20.0 ppb (19) 0.7 ppb (1) N/A 19.0 ppb (18) N/A N/A 13.0 ppb (13) 0.24 ppb (3) N/A 23.0 μg/m3 (74) 74.0
 
Sept. 14, 2021, 9 a.m. 22.3 ppb (22) 0.4 ppb (1) N/A 22.0 ppb (21) N/A N/A 13.0 ppb (13) 0.25 ppb (3) N/A 24.3 μg/m3 (77) 77.0
 
Sept. 14, 2021, 8 a.m. 18.3 ppb (18) 0.5 ppb (1) N/A 18.0 ppb (17) N/A N/A 17.0 ppb (16) 0.28 ppb (4) N/A 27.6 μg/m3 (84) 84.0
 
Sept. 14, 2021, 7 a.m. 13.5 ppb (13) 0.3 ppb (1) N/A 13.0 ppb (13) N/A N/A 23.0 ppb (22) 0.23 ppb (3) N/A 17.8 μg/m3 (63) 63.0
 
Sept. 14, 2021, 6 a.m. 12.7 ppb (12) 0.2 ppb (1) N/A 13.0 ppb (13) N/A N/A 26.0 ppb (25) 0.23 ppb (3) N/A 19.5 μg/m3 (67) 67.0
 
Sept. 14, 2021, 5 a.m. 7.4 ppb (7) 0.0 ppb (0) N/A 7.0 ppb (7) N/A N/A 32.0 ppb (30) 0.17 ppb (3) N/A 10.5 μg/m3 (44) 44.0
 
Sept. 14, 2021, 4 a.m. 6.2 ppb (6) -0.1 ppb (0) N/A 6.0 ppb (6) N/A N/A 34.0 ppb (32) 0.16 ppb (3) N/A 12.6 μg/m3 (53) 53.0
 
Sept. 14, 2021, 3 a.m. 6.9 ppb (7) -0.1 ppb (0) N/A 7.0 ppb (7) N/A N/A 36.0 ppb (34) 0.18 ppb (3) N/A 8.6 μg/m3 (36) 36.0
 
Sept. 14, 2021, 2 a.m. 7.1 ppb (7) -0.1 ppb (0) N/A 7.0 ppb (7) N/A N/A 39.0 ppb (37) 0.19 ppb (3) N/A 11.3 μg/m3 (48) 48.0
 
Sept. 14, 2021, 1 a.m. 7.4 ppb (7) 0.2 ppb (1) N/A 7.0 ppb (7) N/A N/A 44.0 ppb (41) 0.19 ppb (3) N/A 8.1 μg/m3 (34) 41.0
 
Sept. 14, 2021, midnight 6.7 ppb (7) 0.7 ppb (1) N/A 6.0 ppb (6) N/A N/A 47.0 ppb (44) 0.16 ppb (3) N/A 8.3 μg/m3 (35) 44.0
 
Sept. 13, 2021, 11 p.m. 6.5 ppb (7) 0.9 ppb (1) N/A 6.0 ppb (6) N/A N/A 48.0 ppb (45) 0.17 ppb (3) N/A 9.8 μg/m3 (41) 45.0
 
Sept. 13, 2021, 10 p.m. 8.2 ppb (8) 1.0 ppb (1) N/A 7.0 ppb (7) N/A N/A 55.0 ppb (51) 0.2 ppb (3) N/A 13.9 μg/m3 (55) 55.0
 
Sept. 13, 2021, 9 p.m. 7.5 ppb (8) 1.0 ppb (1) N/A 7.0 ppb (7) N/A N/A 54.0 ppb (50) 0.2 ppb (3) N/A 13.7 μg/m3 (55) 55.0
 
Sept. 13, 2021, 8 p.m. 7.6 ppb (8) 1.0 ppb (1) N/A 7.0 ppb (7) N/A N/A 54.0 ppb (50) 0.21 ppb (3) N/A 13.2 μg/m3 (54) 54.0
 
Sept. 13, 2021, 7 p.m. 10.9 ppb (11) 2.0 ppb (2) N/A 9.0 ppb (9) N/A N/A 50.0 ppb (47) 0.24 ppb (3) N/A 12.5 μg/m3 (52) 52.0
 
Sept. 13, 2021, 6 p.m. 17.7 ppb (17) 4.0 ppb (4) N/A 14.0 ppb (14) N/A N/A 44.0 ppb (41) 0.33 ppb (4) N/A 16.3 μg/m3 (60) 60.0
 
Sept. 13, 2021, 5 p.m. 25.3 ppb (24) 8.4 ppb (8) N/A 17.0 ppb (17) N/A N/A 28.0 ppb (26) 0.43 ppb (5) N/A 20.3 μg/m3 (69) 69.0
 
Sept. 13, 2021, 4 p.m. 24.6 ppb (24) 9.6 ppb (10) N/A 15.0 ppb (15) N/A N/A 21.0 ppb (20) 0.41 ppb (5) N/A 19.0 μg/m3 (66) 66.0
 
Sept. 13, 2021, 3 p.m. 22.0 ppb (21) 5.6 ppb (6) N/A 16.0 ppb (16) N/A N/A 15.0 ppb (14) 0.37 ppb (5) N/A 22.0 μg/m3 (72) 72.0
 
Sept. 13, 2021, 2 p.m. 14.3 ppb (14) 1.5 ppb (2) N/A 13.0 ppb (13) N/A N/A 17.0 ppb (16) 0.25 ppb (3) N/A 19.0 μg/m3 (66) 66.0
 
Sept. 13, 2021, 1 p.m. 9.5 ppb (9) 0.4 ppb (1) N/A 9.0 ppb (9) N/A N/A 21.0 ppb (20) 0.17 ppb (3) N/A 15.4 μg/m3 (58) 58.0
 
Sept. 13, 2021, noon 6.8 ppb (7) 0.2 ppb (1) N/A 7.0 ppb (7) N/A N/A 25.0 ppb (24) 0.14 ppb (2) N/A 16.3 μg/m3 (60) 60.0
 
Sept. 13, 2021, 11 a.m. 4.6 ppb (5) 0.0 ppb (0) N/A 5.0 ppb (5) N/A N/A 29.0 ppb (27) 0.11 ppb (2) N/A 8.8 μg/m3 (37) 37.0
 
Sept. 13, 2021, 10 a.m. 4.5 ppb (5) 0.1 ppb (1) N/A 4.0 ppb (4) N/A N/A 30.0 ppb (28) 0.12 ppb (2) N/A 8.6 μg/m3 (36) 36.0
 
Sept. 13, 2021, 9 a.m. 3.6 ppb (4) 0.0 ppb (0) N/A 4.0 ppb (4) N/A N/A 31.0 ppb (29) 0.11 ppb (2) N/A 9.0 μg/m3 (38) 38.0
 
Sept. 13, 2021, 8 a.m. 2.7 ppb (3) -0.1 ppb (0) N/A 3.0 ppb (3) N/A N/A 32.0 ppb (30) 0.1 ppb (2) N/A 10.3 μg/m3 (43) 43.0
 
Sept. 13, 2021, 7 a.m. 2.5 ppb (3) 0.1 ppb (1) N/A 2.0 ppb (2) N/A N/A 34.0 ppb (32) 0.12 ppb (2) N/A 10.8 μg/m3 (46) 46.0
 
Sept. 13, 2021, 6 a.m. 4.2 ppb (4) 0.1 ppb (1) N/A 4.0 ppb (4) N/A N/A 32.0 ppb (30) 0.14 ppb (2) N/A 11.0 μg/m3 (46) 46.0
 
Sept. 13, 2021, 5 a.m. 4.6 ppb (5) -0.1 ppb (0) N/A 5.0 ppb (5) N/A N/A 32.0 ppb (30) 0.14 ppb (2) N/A 10.0 μg/m3 (42) 42.0
 
Sept. 13, 2021, 4 a.m. 4.4 ppb (5) 0.1 ppb (1) N/A 4.0 ppb (4) N/A N/A 33.0 ppb (31) 0.14 ppb (2) N/A 9.3 μg/m3 (39) 39.0
 
Sept. 13, 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) 0.15 ppb (2) N/A 10.5 μg/m3 (44) 44.0
 
Sept. 13, 2021, 2 a.m. 6.4 ppb (7) 0.0 ppb (0) N/A 6.0 ppb (6) N/A N/A 32.0 ppb (30) 0.16 ppb (3) N/A 9.0 μg/m3 (38) 38.0
 
Sept. 13, 2021, 1 a.m. 4.4 ppb (5) 0.1 ppb (1) N/A 4.0 ppb (4) N/A N/A 35.0 ppb (33) 0.14 ppb (2) N/A 9.8 μg/m3 (41) 41.0
 
Sept. 13, 2021, midnight 4.0 ppb (4) 0.3 ppb (1) N/A 4.0 ppb (4) N/A N/A 40.0 ppb (38) 0.14 ppb (2) N/A 10.6 μg/m3 (45) 45.0
 
Sept. 12, 2021, 11 p.m. 3.8 ppb (4) 0.4 ppb (1) N/A 3.0 ppb (3) N/A N/A 46.0 ppb (43) 0.15 ppb (2) N/A 11.5 μg/m3 (48) 48.0
 
Sept. 12, 2021, 10 p.m. 3.6 ppb (4) 0.3 ppb (1) N/A 3.0 ppb (3) N/A N/A 52.0 ppb (49) 0.16 ppb (3) N/A 12.7 μg/m3 (53) 53.0
 
Sept. 12, 2021, 9 p.m. 5.3 ppb (5) 0.7 ppb (1) N/A 5.0 ppb (5) N/A N/A 49.0 ppb (46) 0.16 ppb (3) N/A 16.6 μg/m3 (61) 61.0
 
Sept. 12, 2021, 8 p.m. 5.2 ppb (5) 0.6 ppb (1) N/A 5.0 ppb (5) N/A N/A 51.0 ppb (48) 0.18 ppb (3) N/A 14.7 μg/m3 (57) 57.0
 
Sept. 12, 2021, 7 p.m. 5.8 ppb (6) 0.8 ppb (1) N/A 5.0 ppb (5) N/A N/A 49.0 ppb (46) 0.19 ppb (3) N/A 18.4 μg/m3 (65) 65.0
 
Sept. 12, 2021, 6 p.m. 12.8 ppb (13) 3.1 ppb (3) N/A 10.0 ppb (10) N/A N/A 39.0 ppb (37) 0.21 ppb (3) N/A 17.6 μg/m3 (63) 63.0
 
Sept. 12, 2021, 5 p.m. 15.5 ppb (15) 4.5 ppb (5) N/A 11.0 ppb (11) N/A N/A 32.0 ppb (30) 0.23 ppb (3) N/A 16.8 μg/m3 (61) 61.0
 
Sept. 12, 2021, 4 p.m. 17.7 ppb (17) 6.0 ppb (6) N/A 12.0 ppb (12) N/A N/A 24.0 ppb (23) 0.24 ppb (3) N/A 14.9 μg/m3 (57) 57.0
 
Sept. 12, 2021, 3 p.m. 14.4 ppb (14) 4.5 ppb (5) N/A 10.0 ppb (10) N/A N/A 21.0 ppb (20) 0.22 ppb (3) N/A 13.9 μg/m3 (55) 55.0
 
Sept. 12, 2021, 2 p.m. 9.8 ppb (10) 1.8 ppb (2) N/A 8.0 ppb (8) N/A N/A 19.0 ppb (18) 0.2 ppb (3) N/A 10.3 μg/m3 (43) 43.0
 
Sept. 12, 2021, 1 p.m. 8.4 ppb (8) 0.6 ppb (1) N/A 8.0 ppb (8) N/A N/A 18.0 ppb (17) 0.16 ppb (3) N/A 6.4 μg/m3 (27) 27.0
 
Sept. 12, 2021, noon 5.6 ppb (6) 0.4 ppb (1) N/A 5.0 ppb (5) N/A N/A 21.0 ppb (20) 0.14 ppb (2) N/A 8.6 μg/m3 (36) 36.0
 
Sept. 12, 2021, 11 a.m. 4.5 ppb (5) 0.2 ppb (1) N/A 4.0 ppb (4) N/A N/A 23.0 ppb (22) 0.14 ppb (2) N/A 9.3 μg/m3 (39) 39.0
 
Sept. 12, 2021, 10 a.m. 5.7 ppb (6) 0.3 ppb (1) N/A 5.0 ppb (5) N/A N/A 23.0 ppb (22) 0.14 ppb (2) N/A 8.3 μg/m3 (35) 35.0
 
Sept. 12, 2021, 9 a.m. 6.6 ppb (7) 0.2 ppb (1) N/A 6.0 ppb (6) N/A N/A 25.0 ppb (24) 0.12 ppb (2) N/A 4.9 μg/m3 (21) 24.0
 
Sept. 12, 2021, 8 a.m. 9.9 ppb (10) 0.1 ppb (1) N/A 10.0 ppb (10) N/A N/A 20.0 ppb (19) 0.16 ppb (3) N/A 15.6 μg/m3 (59) 59.0
 
Sept. 12, 2021, 7 a.m. 11.9 ppb (12) 0.5 ppb (1) N/A 12.0 ppb (12) N/A N/A 19.0 ppb (18) 0.28 ppb (4) N/A 15.1 μg/m3 (58) 58.0
 
Sept. 12, 2021, 6 a.m. 8.9 ppb (9) 0.3 ppb (1) N/A 9.0 ppb (9) N/A N/A 24.0 ppb (23) 0.21 ppb (3) N/A 18.8 μg/m3 (66) 66.0
 
Sept. 12, 2021, 5 a.m. 4.5 ppb (5) 0.0 ppb (0) N/A 5.0 ppb (5) N/A N/A 31.0 ppb (29) 0.14 ppb (2) N/A 11.5 μg/m3 (48) 48.0
 
Sept. 12, 2021, 4 a.m. 4.7 ppb (5) -0.1 ppb (0) N/A 5.0 ppb (5) N/A N/A 32.0 ppb (30) 0.15 ppb (2) N/A 10.3 μg/m3 (43) 43.0
 
Sept. 12, 2021, 3 a.m. 6.1 ppb (6) 0.0 ppb (0) N/A 6.0 ppb (6) N/A N/A 31.0 ppb (29) 0.17 ppb (3) N/A 8.3 μg/m3 (35) 35.0
 
Sept. 12, 2021, 2 a.m. 4.6 ppb (5) 0.0 ppb (0) N/A 5.0 ppb (5) N/A N/A 34.0 ppb (32) 0.16 ppb (3) N/A 4.4 μg/m3 (19) 32.0
 
Sept. 12, 2021, 1 a.m. 3.5 ppb (4) 0.1 ppb (1) N/A 3.0 ppb (3) N/A N/A 38.0 ppb (36) 0.13 ppb (2) N/A 6.6 μg/m3 (28) 36.0
 
Sept. 12, 2021, midnight 4.0 ppb (4) 0.4 ppb (1) N/A 4.0 ppb (4) N/A N/A 41.0 ppb (38) 0.14 ppb (2) N/A 8.1 μg/m3 (34) 38.0
 
Sept. 11, 2021, 11 p.m. 5.5 ppb (6) 1.0 ppb (1) N/A 5.0 ppb (5) N/A N/A 39.0 ppb (37) 0.13 ppb (2) N/A 9.6 μg/m3 (40) 40.0
 
Sept. 11, 2021, 10 p.m. 5.8 ppb (6) 1.0 ppb (1) N/A 5.0 ppb (5) N/A N/A 43.0 ppb (40) 0.15 ppb (2) N/A 11.3 μg/m3 (48) 48.0
 
Sept. 11, 2021, 9 p.m. 4.5 ppb (5) 0.6 ppb (1) N/A 4.0 ppb (4) N/A N/A 47.0 ppb (44) 0.16 ppb (3) N/A 8.9 μg/m3 (38) 44.0
 
Sept. 11, 2021, 8 p.m. 4.1 ppb (4) 0.4 ppb (1) N/A 4.0 ppb (4) N/A N/A 48.0 ppb (45) 0.15 ppb (2) N/A 8.4 μg/m3 (36) 45.0
 
Sept. 11, 2021, 7 p.m. 4.5 ppb (5) 0.4 ppb (1) N/A 4.0 ppb (4) N/A N/A 51.0 ppb (48) 0.16 ppb (3) N/A 9.1 μg/m3 (38) 48.0
 
Sept. 11, 2021, 6 p.m. 6.4 ppb (7) 1.0 ppb (1) N/A 5.0 ppb (5) N/A N/A 48.0 ppb (45) 0.18 ppb (3) N/A 12.2 μg/m3 (52) 52.0
 
Sept. 11, 2021, 5 p.m. 13.8 ppb (14) 3.6 ppb (4) N/A 10.0 ppb (10) N/A N/A 36.0 ppb (34) 0.23 ppb (3) N/A 16.6 μg/m3 (61) 61.0
 
Sept. 11, 2021, 4 p.m. 38.4 ppb (37) 14.1 ppb (14) N/A 24.0 ppb (23) N/A N/A 22.0 ppb (21) 0.45 ppb (6) N/A 10.5 μg/m3 (44) 44.0
 
Sept. 11, 2021, 3 p.m. 35.7 ppb (34) 15.2 ppb (15) N/A 21.0 ppb (20) N/A N/A 12.0 ppb (12) 0.51 ppb (6) N/A 16.1 μg/m3 (60) 60.0
 
Sept. 11, 2021, 2 p.m. 36.9 ppb (35) 15.8 ppb (15) N/A 21.0 ppb (20) N/A N/A 6.0 ppb (6) 0.51 ppb (6) N/A 15.4 μg/m3 (58) 58.0
 
Sept. 11, 2021, 1 p.m. 32.1 ppb (31) 8.2 ppb (8) N/A 24.0 ppb (23) N/A N/A 1.0 ppb (1) 0.45 ppb (6) N/A 11.5 μg/m3 (48) 48.0
 
Sept. 11, 2021, noon 26.2 ppb (25) 3.7 ppb (4) N/A 23.0 ppb (22) N/A N/A 2.0 ppb (2) 0.35 ppb (4) N/A 9.3 μg/m3 (39) 39.0
 
Sept. 11, 2021, 11 a.m. 22.5 ppb (22) 2.1 ppb (2) N/A 20.0 ppb (19) N/A N/A 2.0 ppb (2) 0.41 ppb (5) N/A 11.0 μg/m3 (46) 46.0
 
Sept. 11, 2021, 10 a.m. 27.9 ppb (27) 3.5 ppb (4) N/A 24.0 ppb (23) N/A N/A 0.0 ppb (0) 0.42 ppb (5) N/A 12.5 μg/m3 (52) 52.0
 
Sept. 11, 2021, 9 a.m. 17.9 ppb (17) 1.3 ppb (2) N/A 17.0 ppb (17) N/A N/A 8.0 ppb (8) 0.36 ppb (5) N/A 8.8 μg/m3 (37) 37.0
 
Sept. 11, 2021, 8 a.m. 17.5 ppb (17) 0.6 ppb (1) N/A 17.0 ppb (17) N/A N/A 11.0 ppb (11) 0.3 ppb (4) N/A 13.2 μg/m3 (54) 54.0
 
Sept. 11, 2021, 7 a.m. 19.4 ppb (19) 0.6 ppb (1) N/A 19.0 ppb (18) N/A N/A 9.0 ppb (9) 0.34 ppb (4) N/A 9.5 μg/m3 (40) 40.0
 
Sept. 11, 2021, 6 a.m. 12.6 ppb (12) 0.2 ppb (1) N/A 12.0 ppb (12) N/A N/A 16.0 ppb (15) 0.27 ppb (4) N/A 10.8 μg/m3 (46) 46.0
 
Sept. 11, 2021, 5 a.m. 7.2 ppb (7) 0.0 ppb (0) N/A 7.0 ppb (7) N/A N/A 24.0 ppb (23) 0.19 ppb (3) N/A 14.4 μg/m3 (56) 56.0
 
Sept. 11, 2021, 4 a.m. 8.8 ppb (9) 0.1 ppb (1) N/A 9.0 ppb (9) N/A N/A 26.0 ppb (25) 0.23 ppb (3) N/A 8.6 μg/m3 (36) 36.0
 
Sept. 11, 2021, 3 a.m. 8.6 ppb (9) 0.0 ppb (0) N/A 9.0 ppb (9) N/A N/A 29.0 ppb (27) 0.21 ppb (3) N/A 7.6 μg/m3 (32) 32.0
 
Sept. 11, 2021, 2 a.m. 6.8 ppb (7) -0.1 ppb (0) N/A 7.0 ppb (7) N/A N/A 30.0 ppb (28) 0.19 ppb (3) N/A 7.6 μg/m3 (32) 32.0
 
Sept. 11, 2021, 1 a.m. 6.0 ppb (6) 0.2 ppb (1) N/A 6.0 ppb (6) N/A N/A 36.0 ppb (34) 0.18 ppb (3) N/A 6.4 μg/m3 (27) 34.0
 
Sept. 11, 2021, midnight 6.2 ppb (6) 0.8 ppb (1) N/A 5.0 ppb (5) N/A N/A 38.0 ppb (36) 0.17 ppb (3) N/A 9.8 μg/m3 (41) 41.0
 
Sept. 10, 2021, 11 p.m. 6.5 ppb (7) 1.1 ppb (2) N/A 5.0 ppb (5) N/A N/A 41.0 ppb (38) 0.19 ppb (3) N/A 8.8 μg/m3 (37) 38.0
 
Sept. 10, 2021, 10 p.m. 6.3 ppb (6) 1.0 ppb (1) N/A 5.0 ppb (5) N/A N/A 45.0 ppb (42) 0.18 ppb (3) N/A 11.1 μg/m3 (47) 47.0
 
Sept. 10, 2021, 9 p.m. 7.3 ppb (7) 1.3 ppb (2) N/A 6.0 ppb (6) N/A N/A 46.0 ppb (43) 0.2 ppb (3) N/A 8.6 μg/m3 (36) 43.0
 
Sept. 10, 2021, 8 p.m. 5.3 ppb (5) 0.8 ppb (1) N/A 5.0 ppb (5) N/A N/A 48.0 ppb (45) 0.17 ppb (3) N/A 7.6 μg/m3 (32) 45.0
 
Sept. 10, 2021, 7 p.m. 7.0 ppb (7) 0.9 ppb (1) N/A 6.0 ppb (6) N/A N/A 54.0 ppb (50) 0.2 ppb (3) N/A 11.8 μg/m3 (50) 50.0
 
Sept. 10, 2021, 6 p.m. 10.9 ppb (11) 1.9 ppb (2) N/A 9.0 ppb (9) N/A N/A 51.0 ppb (48) 0.25 ppb (3) N/A 12.9 μg/m3 (53) 53.0
 
Sept. 10, 2021, 5 p.m. 19.1 ppb (19) 5.6 ppb (6) N/A 14.0 ppb (14) N/A N/A 32.0 ppb (30) 0.31 ppb (4) N/A 16.6 μg/m3 (61) 61.0
 
Sept. 10, 2021, 4 p.m. 14.8 ppb (14) 4.7 ppb (5) N/A 10.0 ppb (10) N/A N/A 25.0 ppb (24) 0.27 ppb (4) N/A 10.3 μg/m3 (43) 43.0
 
Sept. 10, 2021, 3 p.m. 14.1 ppb (14) 3.8 ppb (4) N/A 10.0 ppb (10) N/A N/A 22.0 ppb (21) 0.28 ppb (4) N/A 11.3 μg/m3 (48) 48.0
 
Sept. 10, 2021, 2 p.m. 11.8 ppb (12) 1.3 ppb (2) N/A 11.0 ppb (11) N/A N/A 21.0 ppb (20) 0.24 ppb (3) N/A 9.6 μg/m3 (40) 40.0
 
Sept. 10, 2021, 1 p.m. 13.9 ppb (14) 0.7 ppb (1) N/A 13.0 ppb (13) N/A N/A 18.0 ppb (17) 0.24 ppb (3) N/A 9.1 μg/m3 (38) 38.0
 
Sept. 10, 2021, noon 33.3 ppb (32) 2.7 ppb (3) N/A 31.0 ppb (30) N/A N/A 2.0 ppb (2) 0.33 ppb (4) N/A 16.6 μg/m3 (61) 61.0
 
Sept. 10, 2021, 11 a.m. 33.7 ppb (32) 1.9 ppb (2) N/A 32.0 ppb (31) N/A N/A 3.0 ppb (3) 0.29 ppb (4) N/A 10.5 μg/m3 (44) 44.0
 
Sept. 10, 2021, 10 a.m. 28.4 ppb (27) 0.9 ppb (1) N/A 28.0 ppb (27) N/A N/A 7.0 ppb (7) 0.23 ppb (3) N/A 12.2 μg/m3 (52) 52.0
 
Sept. 10, 2021, 9 a.m. 16.2 ppb (16) 0.3 ppb (1) N/A 16.0 ppb (16) N/A N/A 17.0 ppb (16) 0.22 ppb (3) N/A 8.6 μg/m3 (36) 36.0
 
Sept. 10, 2021, 8 a.m. 9.9 ppb (10) 0.1 ppb (1) N/A 10.0 ppb (10) N/A N/A 23.0 ppb (22) 0.2 ppb (3) N/A 10.3 μg/m3 (43) 43.0
 
Sept. 10, 2021, 7 a.m. 7.5 ppb (8) 0.0 ppb (0) N/A 8.0 ppb (8) N/A N/A 27.0 ppb (25) 0.17 ppb (3) N/A 8.3 μg/m3 (35) 35.0
 
Sept. 10, 2021, 6 a.m. 4.5 ppb (5) -0.1 ppb (0) N/A 5.0 ppb (5) N/A N/A 31.0 ppb (29) 0.15 ppb (2) N/A 5.9 μg/m3 (25) 29.0
 
Sept. 10, 2021, 5 a.m. 3.8 ppb (4) -0.1 ppb (0) N/A 4.0 ppb (4) N/A N/A 31.0 ppb (29) 0.14 ppb (2) N/A 8.6 μg/m3 (36) 36.0
 
Sept. 10, 2021, 4 a.m. 4.3 ppb (5) 0.0 ppb (0) N/A 4.0 ppb (4) N/A N/A 29.0 ppb (27) 0.15 ppb (2) N/A 11.3 μg/m3 (48) 48.0
 
Sept. 10, 2021, 3 a.m. 5.2 ppb (5) 0.0 ppb (0) N/A 5.0 ppb (5) N/A N/A 28.0 ppb (26) 0.17 ppb (3) N/A 11.0 μg/m3 (46) 46.0
 
Sept. 10, 2021, 2 a.m. 6.5 ppb (7) -0.1 ppb (0) N/A 7.0 ppb (7) N/A N/A 32.0 ppb (30) 0.19 ppb (3) N/A 8.8 μg/m3 (37) 37.0
 
Sept. 10, 2021, 1 a.m. 6.2 ppb (6) 0.2 ppb (1) N/A 6.0 ppb (6) N/A N/A 42.0 ppb (39) 0.2 ppb (3) N/A 9.6 μg/m3 (40) 40.0
 
Sept. 10, 2021, midnight 6.8 ppb (7) 0.6 ppb (1) N/A 6.0 ppb (6) N/A N/A 47.0 ppb (44) 0.21 ppb (3) N/A 13.7 μg/m3 (55) 55.0
 
Sept. 9, 2021, 11 p.m. 6.6 ppb (7) 0.3 ppb (1) N/A 6.0 ppb (6) N/A N/A 70.0 ppb (100) 0.23 ppb (3) N/A 15.0 μg/m3 (58) 100.0
 
Sept. 9, 2021, 10 p.m. 8.3 ppb (8) 0.4 ppb (1) N/A 8.0 ppb (8) N/A N/A 84.0 ppb (108) 0.29 ppb (4) N/A 17.6 μg/m3 (63) 108.0
 
Sept. 9, 2021, 9 p.m. 10.7 ppb (11) 0.8 ppb (1) N/A 10.0 ppb (10) N/A N/A 78.0 ppb (105) 0.3 ppb (4) N/A 20.8 μg/m3 (70) 105.0
 
Sept. 9, 2021, 8 p.m. 12.1 ppb (12) 1.4 ppb (2) N/A 11.0 ppb (11) N/A N/A 65.0 ppb (84) 0.3 ppb (4) N/A 16.1 μg/m3 (60) 84.0
 
Sept. 9, 2021, 7 p.m. 16.7 ppb (16) 3.0 ppb (3) N/A 14.0 ppb (14) N/A N/A 52.0 ppb (49) 0.32 ppb (4) N/A 19.6 μg/m3 (67) 67.0
 
Sept. 9, 2021, 6 p.m. 15.7 ppb (15) 3.4 ppb (4) N/A 12.0 ppb (12) N/A N/A 43.0 ppb (40) 0.31 ppb (4) N/A 17.1 μg/m3 (62) 62.0
 
Sept. 9, 2021, 5 p.m. 13.9 ppb (14) 3.5 ppb (4) N/A 10.0 ppb (10) N/A N/A 35.0 ppb (33) 0.3 ppb (4) N/A 11.0 μg/m3 (46) 46.0
 
Sept. 9, 2021, 4 p.m. 14.7 ppb (14) 4.1 ppb (4) N/A 11.0 ppb (11) N/A N/A 29.0 ppb (27) 0.31 ppb (4) N/A 11.5 μg/m3 (48) 48.0
 
Sept. 9, 2021, 3 p.m. 18.0 ppb (17) 5.1 ppb (5) N/A 13.0 ppb (13) N/A N/A 22.0 ppb (21) 0.37 ppb (5) N/A 16.6 μg/m3 (61) 61.0
 
Sept. 9, 2021, 2 p.m. 31.2 ppb (30) 10.1 ppb (10) N/A 21.0 ppb (20) N/A N/A 9.0 ppb (9) 0.48 ppb (6) N/A 22.0 μg/m3 (72) 72.0
 
Sept. 9, 2021, 1 p.m. 34.0 ppb (33) 8.6 ppb (9) N/A 25.0 ppb (24) N/A N/A 2.0 ppb (2) 0.56 ppb (7) N/A 13.7 μg/m3 (55) 55.0
 
Sept. 9, 2021, noon 22.2 ppb (21) 1.3 ppb (2) N/A 21.0 ppb (20) N/A N/A 6.0 ppb (6) 0.37 ppb (5) N/A 12.4 μg/m3 (52) 52.0
 
Sept. 9, 2021, 11 a.m. 15.5 ppb (15) 0.6 ppb (1) N/A 15.0 ppb (15) N/A N/A 14.0 ppb (13) 0.29 ppb (4) N/A 13.4 μg/m3 (54) 54.0
 
Sept. 9, 2021, 10 a.m. 14.0 ppb (14) 1.0 ppb (1) N/A 13.0 ppb (13) N/A N/A 18.0 ppb (17) 0.24 ppb (3) N/A 13.1 μg/m3 (54) 54.0
 
Sept. 9, 2021, 9 a.m. 9.2 ppb (9) 0.2 ppb (1) N/A 9.0 ppb (9) N/A N/A 24.0 ppb (23) 0.2 ppb (3) N/A 14.1 μg/m3 (56) 56.0
 
Sept. 9, 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) 0.17 ppb (3) N/A 9.5 μg/m3 (40) 40.0
 
Sept. 9, 2021, 7 a.m. 5.9 ppb (6) 0.1 ppb (1) N/A 6.0 ppb (6) N/A N/A 29.0 ppb (27) 0.18 ppb (3) N/A 12.5 μg/m3 (52) 52.0
 
Sept. 9, 2021, 6 a.m. 3.9 ppb (4) 0.0 ppb (0) N/A 4.0 ppb (4) N/A N/A 32.0 ppb (30) 0.16 ppb (3) N/A 7.6 μg/m3 (32) 32.0
 
Sept. 9, 2021, 5 a.m. 3.2 ppb (4) 0.0 ppb (0) N/A 3.0 ppb (3) N/A N/A 34.0 ppb (32) 0.15 ppb (2) N/A 10.3 μg/m3 (43) 43.0
 
Sept. 9, 2021, 4 a.m. 3.8 ppb (4) 0.0 ppb (0) N/A 4.0 ppb (4) N/A N/A 38.0 ppb (36) 0.17 ppb (3) N/A 9.3 μg/m3 (39) 39.0
 
Sept. 9, 2021, 3 a.m. 3.6 ppb (4) 0.0 ppb (0) N/A 4.0 ppb (4) N/A N/A 35.0 ppb (33) 0.18 ppb (3) N/A 9.3 μg/m3 (39) 39.0
 
Sept. 9, 2021, 2 a.m. 6.5 ppb (7) 0.0 ppb (0) N/A 7.0 ppb (7) N/A N/A 32.0 ppb (30) 0.22 ppb (3) N/A 12.3 μg/m3 (52) 52.0
 
Sept. 9, 2021, 1 a.m. 8.5 ppb (9) 0.4 ppb (1) N/A 8.0 ppb (8) N/A N/A 36.0 ppb (34) 0.24 ppb (3) N/A 12.0 μg/m3 (50) 50.0
 
Sept. 9, 2021, midnight 6.7 ppb (7) 0.6 ppb (1) N/A 6.0 ppb (6) N/A N/A 42.0 ppb (39) 0.24 ppb (3) N/A 10.8 μg/m3 (46) 46.0
 
Sept. 8, 2021, 11 p.m. 5.7 ppb (6) 0.6 ppb (1) N/A 5.0 ppb (5) N/A N/A 50.0 ppb (47) 0.23 ppb (3) N/A 11.1 μg/m3 (47) 47.0
 
Sept. 8, 2021, 10 p.m. 6.7 ppb (7) 0.7 ppb (1) N/A 6.0 ppb (6) N/A N/A 55.0 ppb (51) 0.26 ppb (4) N/A 19.3 μg/m3 (67) 67.0
 
Sept. 8, 2021, 9 p.m. 9.8 ppb (10) 1.0 ppb (1) N/A 9.0 ppb (9) N/A N/A 63.0 ppb (78) 0.3 ppb (4) N/A 23.5 μg/m3 (75) 78.0
 
Sept. 8, 2021, 8 p.m. 15.6 ppb (15) 2.6 ppb (3) N/A 13.0 ppb (13) N/A N/A 55.0 ppb (51) 0.35 ppb (4) N/A 25.9 μg/m3 (81) 81.0
 
Sept. 8, 2021, 7 p.m. 28.0 ppb (27) 6.9 ppb (7) N/A 21.0 ppb (20) N/A N/A 40.0 ppb (38) 0.39 ppb (5) N/A 28.9 μg/m3 (87) 87.0
 
Sept. 8, 2021, 6 p.m. 41.6 ppb (40) 15.3 ppb (15) N/A 26.0 ppb (25) N/A N/A 24.0 ppb (23) 0.41 ppb (5) N/A 29.4 μg/m3 (88) 88.0
 
Sept. 8, 2021, 5 p.m. 31.6 ppb (30) 11.1 ppb (11) N/A 21.0 ppb (20) N/A N/A 23.0 ppb (22) 0.4 ppb (5) N/A 26.9 μg/m3 (83) 83.0
 
Sept. 8, 2021, 4 p.m. 23.9 ppb (23) 5.3 ppb (5) N/A 19.0 ppb (18) N/A N/A 21.0 ppb (20) 0.36 ppb (5) N/A 25.2 μg/m3 (79) 79.0
 
Sept. 8, 2021, 3 p.m. 17.1 ppb (17) 3.9 ppb (4) N/A 13.0 ppb (13) N/A N/A 23.0 ppb (22) 0.33 ppb (4) N/A 21.5 μg/m3 (71) 71.0
 
Sept. 8, 2021, 2 p.m. 11.9 ppb (12) 1.2 ppb (2) N/A 11.0 ppb (11) N/A N/A 26.0 ppb (25) 0.29 ppb (4) N/A 18.3 μg/m3 (65) 65.0
 
Sept. 8, 2021, 1 p.m. 10.1 ppb (10) 0.3 ppb (1) N/A 10.0 ppb (10) N/A N/A 26.0 ppb (25) 0.28 ppb (4) N/A 14.4 μg/m3 (56) 56.0
 
Sept. 8, 2021, noon 8.9 ppb (9) 0.2 ppb (1) N/A 9.0 ppb (9) N/A N/A 25.0 ppb (24) 0.26 ppb (4) N/A 15.1 μg/m3 (58) 58.0
 
Sept. 8, 2021, 11 a.m. 6.6 ppb (7) 0.0 ppb (0) N/A 7.0 ppb (7) N/A N/A 27.0 ppb (25) 0.21 ppb (3) N/A 15.8 μg/m3 (59) 59.0
 
Sept. 8, 2021, 10 a.m. 4.5 ppb (5) 0.1 ppb (1) N/A 4.0 ppb (4) N/A N/A 32.0 ppb (30) 0.2 ppb (3) N/A 12.7 μg/m3 (53) 53.0
 
Sept. 8, 2021, 9 a.m. 4.0 ppb (4) 0.0 ppb (0) N/A 4.0 ppb (4) N/A N/A 32.0 ppb (30) 0.2 ppb (3) N/A 11.3 μg/m3 (48) 48.0
 
Sept. 8, 2021, 8 a.m. 4.7 ppb (5) 0.0 ppb (0) N/A 5.0 ppb (5) N/A N/A 31.0 ppb (29) 0.2 ppb (3) N/A 18.5 μg/m3 (65) 65.0
 
Sept. 8, 2021, 7 a.m. 4.2 ppb (4) 0.0 ppb (0) N/A 4.0 ppb (4) N/A N/A N/A 0.22 ppb (3) N/A 19.5 μg/m3 (67) 67.0
 
Sept. 8, 2021, 6 a.m. 5.3 ppb (5) -0.1 ppb (0) N/A 5.0 ppb (5) N/A N/A 29.0 ppb (27) 0.22 ppb (3) N/A 15.6 μg/m3 (59) 59.0
 
Sept. 8, 2021, 5 a.m. 5.3 ppb (5) -0.1 ppb (0) N/A 5.0 ppb (5) N/A N/A 32.0 ppb (30) 0.25 ppb (3) N/A 16.6 μg/m3 (61) 61.0
 
Sept. 8, 2021, 4 a.m. 6.2 ppb (6) -0.1 ppb (0) N/A 6.0 ppb (6) N/A N/A 32.0 ppb (30) 0.26 ppb (4) N/A 14.6 μg/m3 (57) 57.0
 
Sept. 8, 2021, 3 a.m. 5.2 ppb (5) -0.1 ppb (0) N/A 5.0 ppb (5) N/A N/A 32.0 ppb (30) 0.24 ppb (3) N/A 15.3 μg/m3 (58) 58.0
 
Sept. 8, 2021, 2 a.m. 3.8 ppb (4) -0.1 ppb (0) N/A 4.0 ppb (4) N/A N/A 35.0 ppb (33) 0.22 ppb (3) N/A 14.4 μg/m3 (56) 56.0
 
Sept. 8, 2021, 1 a.m. 4.2 ppb (4) 0.1 ppb (1) N/A 4.0 ppb (4) N/A N/A 38.0 ppb (36) 0.23 ppb (3) N/A 12.0 μg/m3 (50) 50.0
 
Sept. 8, 2021, midnight 4.8 ppb (5) 0.4 ppb (1) N/A 4.0 ppb (4) N/A N/A 42.0 ppb (39) 0.24 ppb (3) N/A 15.4 μg/m3 (58) 58.0
 
Sept. 7, 2021, 11 p.m. 6.3 ppb (6) 0.7 ppb (1) N/A 6.0 ppb (6) N/A N/A 47.0 ppb (44) 0.25 ppb (3) N/A 20.4 μg/m3 (69) 69.0
 
Sept. 7, 2021, 10 p.m. 20.4 ppb (20) 4.3 ppb (5) N/A 16.0 ppb (16) N/A N/A 42.0 ppb (39) 0.28 ppb (4) N/A 16.6 μg/m3 (61) 61.0
 
Sept. 7, 2021, 9 p.m. 25.5 ppb (25) 6.1 ppb (6) N/A 19.0 ppb (18) N/A N/A 40.0 ppb (38) 0.29 ppb (4) N/A 20.1 μg/m3 (68) 68.0
 
Sept. 7, 2021, 8 p.m. 25.6 ppb (25) 7.3 ppb (7) N/A 18.0 ppb (17) N/A N/A 36.0 ppb (34) 0.27 ppb (4) N/A 20.4 μg/m3 (69) 69.0
 
Sept. 7, 2021, 7 p.m. 18.1 ppb (18) 5.1 ppb (5) N/A 13.0 ppb (13) N/A N/A 36.0 ppb (34) 0.24 ppb (3) N/A 20.3 μg/m3 (69) 69.0