ID: 1894

AQSQID: 060371302

Site Name: Compton

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

Updated: Sept. 28, 2021, 7:03 p.m.

Location: Compton (E Compton), CA

Reporting: True, Located: True

Current AQI: 40.0

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. 28, 2021, 5 p.m. 18.7 ppb (18) 4.7 ppb (5) N/A 14.0 ppb (14) N/A N/A 29.0 ppb (27) 0.19 ppb (3) N/A 9.5 μg/m3 (40) 40.0
 
Sept. 28, 2021, 4 p.m. 24.2 ppb (23) 5.9 ppb (6) N/A 18.0 ppb (17) N/A N/A 22.0 ppb (21) 0.25 ppb (3) N/A 7.8 μg/m3 (33) 33.0
 
Sept. 28, 2021, 3 p.m. 23.9 ppb (23) 4.9 ppb (5) N/A 19.0 ppb (18) N/A N/A 18.0 ppb (17) 0.38 ppb (5) N/A 9.8 μg/m3 (41) 41.0
 
Sept. 28, 2021, 2 p.m. 23.5 ppb (23) 3.4 ppb (4) N/A 20.0 ppb (19) N/A N/A 13.0 ppb (13) 0.35 ppb (4) N/A 8.3 μg/m3 (35) 35.0
 
Sept. 28, 2021, 1 p.m. 16.8 ppb (16) 0.6 ppb (1) N/A 16.0 ppb (16) N/A N/A 15.0 ppb (14) 0.37 ppb (5) N/A 3.1 μg/m3 (13) 16.0
 
Sept. 28, 2021, noon 11.5 ppb (11) 0.6 ppb (1) N/A 11.0 ppb (11) N/A N/A 20.0 ppb (19) 0.21 ppb (3) N/A 3.9 μg/m3 (17) 19.0
 
Sept. 28, 2021, 11 a.m. 5.5 ppb (6) 0.0 ppb (0) N/A 5.0 ppb (5) N/A N/A 28.0 ppb (26) 0.13 ppb (2) N/A 5.1 μg/m3 (22) 26.0
 
Sept. 28, 2021, 10 a.m. 6.7 ppb (7) 0.2 ppb (1) N/A 7.0 ppb (7) N/A N/A 28.0 ppb (26) 0.11 ppb (2) N/A 4.9 μg/m3 (21) 26.0
 
Sept. 28, 2021, 9 a.m. 6.6 ppb (7) -0.1 ppb (0) N/A 7.0 ppb (7) N/A N/A 29.0 ppb (27) 0.1 ppb (2) N/A 8.0 μg/m3 (34) 34.0
 
Sept. 28, 2021, 8 a.m. 4.5 ppb (5) 0.1 ppb (1) N/A 4.0 ppb (4) N/A N/A 32.0 ppb (30) 0.11 ppb (2) N/A 13.1 μg/m3 (54) 54.0
 
Sept. 28, 2021, 7 a.m. 4.4 ppb (5) -0.1 ppb (0) N/A 5.0 ppb (5) N/A N/A 33.0 ppb (31) 0.09 ppb (2) N/A 2.4 μg/m3 (10) 31.0
 
Sept. 28, 2021, 6 a.m. 6.1 ppb (6) -0.2 ppb (0) N/A 6.0 ppb (6) N/A N/A 31.0 ppb (29) 0.1 ppb (2) N/A 4.6 μg/m3 (20) 29.0
 
Sept. 28, 2021, 5 a.m. 7.5 ppb (8) -0.3 ppb (0) N/A 8.0 ppb (8) N/A N/A 31.0 ppb (29) 0.13 ppb (2) N/A 4.9 μg/m3 (21) 29.0
 
Sept. 28, 2021, 4 a.m. 4.2 ppb (4) -0.3 ppb (0) N/A 4.0 ppb (4) N/A N/A 35.0 ppb (33) 0.12 ppb (2) N/A 6.6 μg/m3 (28) 33.0
 
Sept. 28, 2021, 3 a.m. 5.0 ppb (5) -0.4 ppb (0) N/A 5.0 ppb (5) N/A N/A 35.0 ppb (33) 0.13 ppb (2) N/A 11.2 μg/m3 (47) 47.0
 
Sept. 28, 2021, 2 a.m. 7.2 ppb (7) -0.2 ppb (0) N/A 7.0 ppb (7) N/A N/A 33.0 ppb (31) 0.18 ppb (3) N/A 4.9 μg/m3 (21) 31.0
 
Sept. 28, 2021, 1 a.m. 7.0 ppb (7) -0.2 ppb (0) N/A 7.0 ppb (7) N/A N/A 34.0 ppb (32) 0.16 ppb (3) N/A 5.1 μg/m3 (22) 32.0
 
Sept. 28, 2021, midnight 7.5 ppb (8) 0.0 ppb (0) N/A 8.0 ppb (8) N/A N/A 35.0 ppb (33) 0.16 ppb (3) N/A 7.6 μg/m3 (32) 33.0
 
Sept. 27, 2021, 11 p.m. 9.5 ppb (9) 0.4 ppb (1) N/A 9.0 ppb (9) N/A N/A 34.0 ppb (32) 0.18 ppb (3) N/A 6.6 μg/m3 (28) 32.0
 
Sept. 27, 2021, 10 p.m. 10.1 ppb (10) 1.0 ppb (1) N/A 9.0 ppb (9) N/A N/A 34.0 ppb (32) 0.17 ppb (3) N/A 8.5 μg/m3 (36) 36.0
 
Sept. 27, 2021, 9 p.m. 13.8 ppb (14) 2.1 ppb (2) N/A 12.0 ppb (12) N/A N/A 31.0 ppb (29) 0.21 ppb (3) N/A 9.0 μg/m3 (38) 38.0
 
Sept. 27, 2021, 8 p.m. 17.4 ppb (17) 2.3 ppb (3) N/A 15.0 ppb (15) N/A N/A 27.0 ppb (25) 0.21 ppb (3) N/A 7.8 μg/m3 (33) 33.0
 
Sept. 27, 2021, 7 p.m. 11.7 ppb (12) 1.7 ppb (2) N/A 10.0 ppb (10) N/A N/A 32.0 ppb (30) 0.15 ppb (2) N/A 4.6 μg/m3 (20) 30.0
 
Sept. 27, 2021, 6 p.m. 12.7 ppb (12) 1.9 ppb (2) N/A 11.0 ppb (11) N/A N/A 31.0 ppb (29) 0.17 ppb (3) N/A 5.6 μg/m3 (24) 29.0
 
Sept. 27, 2021, 5 p.m. 19.7 ppb (19) 3.6 ppb (4) N/A 16.0 ppb (16) N/A N/A 23.0 ppb (22) 0.22 ppb (3) N/A 7.6 μg/m3 (32) 32.0
 
Sept. 27, 2021, 4 p.m. 20.4 ppb (20) 2.5 ppb (3) N/A 18.0 ppb (17) N/A N/A 21.0 ppb (20) 0.22 ppb (3) N/A 8.0 μg/m3 (34) 34.0
 
Sept. 27, 2021, 3 p.m. 16.8 ppb (16) 1.2 ppb (2) N/A 16.0 ppb (16) N/A N/A 22.0 ppb (21) 0.22 ppb (3) N/A 10.5 μg/m3 (44) 44.0
 
Sept. 27, 2021, 2 p.m. 15.2 ppb (15) 0.8 ppb (1) N/A 14.0 ppb (14) N/A N/A 23.0 ppb (22) 0.21 ppb (3) N/A 7.8 μg/m3 (33) 33.0
 
Sept. 27, 2021, 1 p.m. 15.7 ppb (15) 0.1 ppb (1) N/A 16.0 ppb (16) N/A N/A 21.0 ppb (20) 0.18 ppb (3) N/A 7.3 μg/m3 (31) 31.0
 
Sept. 27, 2021, noon 9.3 ppb (9) 0.1 ppb (1) N/A 9.0 ppb (9) N/A N/A 27.0 ppb (25) 0.16 ppb (3) N/A 9.2 μg/m3 (39) 39.0
 
Sept. 27, 2021, 11 a.m. 3.8 ppb (4) -0.2 ppb (0) N/A 4.0 ppb (4) N/A N/A 34.0 ppb (32) 0.14 ppb (2) N/A 9.3 μg/m3 (39) 39.0
 
Sept. 27, 2021, 10 a.m. 3.9 ppb (4) 0.0 ppb (0) N/A 4.0 ppb (4) N/A N/A 35.0 ppb (33) 0.14 ppb (2) N/A 7.1 μg/m3 (30) 33.0
 
Sept. 27, 2021, 9 a.m. 4.4 ppb (5) 0.1 ppb (1) N/A 4.0 ppb (4) N/A N/A 34.0 ppb (32) 0.14 ppb (2) N/A 11.2 μg/m3 (47) 47.0
 
Sept. 27, 2021, 8 a.m. 4.4 ppb (5) -0.1 ppb (0) N/A 4.0 ppb (4) N/A N/A 35.0 ppb (33) 0.14 ppb (2) N/A 11.2 μg/m3 (47) 47.0
 
Sept. 27, 2021, 7 a.m. 4.0 ppb (4) -0.2 ppb (0) N/A 4.0 ppb (4) N/A N/A 35.0 ppb (33) 0.12 ppb (2) N/A 13.3 μg/m3 (54) 54.0
 
Sept. 27, 2021, 6 a.m. 3.5 ppb (4) -0.2 ppb (0) N/A 4.0 ppb (4) N/A N/A 35.0 ppb (33) 0.11 ppb (2) N/A 10.5 μg/m3 (44) 44.0
 
Sept. 27, 2021, 5 a.m. 4.2 ppb (4) -0.2 ppb (0) N/A 4.0 ppb (4) N/A N/A 34.0 ppb (32) 0.12 ppb (2) N/A 9.3 μg/m3 (39) 39.0
 
Sept. 27, 2021, 4 a.m. 3.5 ppb (4) -0.3 ppb (0) N/A 4.0 ppb (4) N/A N/A 35.0 ppb (33) 0.12 ppb (2) N/A 11.5 μg/m3 (48) 48.0
 
Sept. 27, 2021, 3 a.m. 3.5 ppb (4) -0.2 ppb (0) N/A 4.0 ppb (4) N/A N/A 36.0 ppb (34) 0.12 ppb (2) N/A 11.2 μg/m3 (47) 47.0
 
Sept. 27, 2021, 2 a.m. 3.7 ppb (4) -0.2 ppb (0) N/A 4.0 ppb (4) N/A N/A 37.0 ppb (35) 0.13 ppb (2) N/A 12.2 μg/m3 (52) 52.0
 
Sept. 27, 2021, 1 a.m. 2.4 ppb (3) -0.3 ppb (0) N/A 3.0 ppb (3) N/A N/A 40.0 ppb (38) 0.12 ppb (2) N/A 8.3 μg/m3 (35) 38.0
 
Sept. 27, 2021, midnight 3.0 ppb (3) -0.1 ppb (0) N/A 3.0 ppb (3) N/A N/A 41.0 ppb (38) 0.11 ppb (2) N/A 9.0 μg/m3 (38) 38.0
 
Sept. 26, 2021, 11 p.m. 3.1 ppb (3) 0.0 ppb (0) N/A 3.0 ppb (3) N/A N/A 43.0 ppb (40) 0.11 ppb (2) N/A 6.8 μg/m3 (29) 40.0
 
Sept. 26, 2021, 10 p.m. 3.2 ppb (4) 0.1 ppb (1) N/A 3.0 ppb (3) N/A N/A 44.0 ppb (41) 0.12 ppb (2) N/A 9.0 μg/m3 (38) 41.0
 
Sept. 26, 2021, 9 p.m. 3.3 ppb (4) 0.0 ppb (0) N/A 3.0 ppb (3) N/A N/A 47.0 ppb (44) 0.13 ppb (2) N/A 11.2 μg/m3 (47) 47.0
 
Sept. 26, 2021, 8 p.m. 3.7 ppb (4) 0.1 ppb (1) N/A 4.0 ppb (4) N/A N/A 47.0 ppb (44) 0.13 ppb (2) N/A 13.3 μg/m3 (54) 54.0
 
Sept. 26, 2021, 7 p.m. 5.5 ppb (6) 0.3 ppb (1) N/A 5.0 ppb (5) N/A N/A 43.0 ppb (40) 0.15 ppb (2) N/A 15.3 μg/m3 (58) 58.0
 
Sept. 26, 2021, 6 p.m. 4.8 ppb (5) 0.3 ppb (1) N/A 4.0 ppb (4) N/A N/A 42.0 ppb (39) 0.16 ppb (3) N/A 11.5 μg/m3 (48) 48.0
 
Sept. 26, 2021, 5 p.m. 4.2 ppb (4) 0.1 ppb (1) N/A 4.0 ppb (4) N/A N/A 40.0 ppb (38) 0.15 ppb (2) N/A 10.7 μg/m3 (45) 45.0
 
Sept. 26, 2021, 4 p.m. 3.6 ppb (4) 0.0 ppb (0) N/A 4.0 ppb (4) N/A N/A 39.0 ppb (37) 0.12 ppb (2) N/A 10.5 μg/m3 (44) 44.0
 
Sept. 26, 2021, 3 p.m. 3.6 ppb (4) 0.0 ppb (0) N/A 4.0 ppb (4) N/A N/A 38.0 ppb (36) 0.12 ppb (2) N/A 10.3 μg/m3 (43) 43.0
 
Sept. 26, 2021, 2 p.m. 3.8 ppb (4) -0.2 ppb (0) N/A 4.0 ppb (4) N/A N/A 36.0 ppb (34) 0.11 ppb (2) N/A 9.5 μg/m3 (40) 40.0
 
Sept. 26, 2021, 1 p.m. 2.5 ppb (3) -0.3 ppb (0) N/A 3.0 ppb (3) N/A N/A 36.0 ppb (34) 0.11 ppb (2) N/A 15.1 μg/m3 (58) 58.0
 
Sept. 26, 2021, noon 3.8 ppb (4) 0.0 ppb (0) N/A 4.0 ppb (4) N/A N/A 33.0 ppb (31) 0.1 ppb (2) N/A 14.6 μg/m3 (57) 57.0
 
Sept. 26, 2021, 11 a.m. 3.5 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 10.0 μg/m3 (42) 42.0
 
Sept. 26, 2021, 10 a.m. 4.3 ppb (5) -0.2 ppb (0) N/A 5.0 ppb (5) N/A N/A 32.0 ppb (30) 0.12 ppb (2) N/A 22.5 μg/m3 (73) 73.0
 
Sept. 26, 2021, 9 a.m. 3.2 ppb (4) -0.1 ppb (0) N/A 3.0 ppb (3) N/A N/A 33.0 ppb (31) 0.12 ppb (2) N/A 8.5 μg/m3 (36) 36.0
 
Sept. 26, 2021, 8 a.m. 3.6 ppb (4) -0.1 ppb (0) N/A 4.0 ppb (4) N/A N/A 33.0 ppb (31) 0.12 ppb (2) N/A 14.8 μg/m3 (57) 57.0
 
Sept. 26, 2021, 7 a.m. 3.9 ppb (4) 0.0 ppb (0) N/A 4.0 ppb (4) N/A N/A 33.0 ppb (31) 0.12 ppb (2) N/A 13.6 μg/m3 (55) 55.0
 
Sept. 26, 2021, 6 a.m. 3.4 ppb (4) -0.1 ppb (0) N/A 4.0 ppb (4) N/A N/A 34.0 ppb (32) 0.11 ppb (2) N/A 12.7 μg/m3 (53) 53.0
 
Sept. 26, 2021, 5 a.m. 2.8 ppb (3) -0.3 ppb (0) N/A 3.0 ppb (3) N/A N/A 34.0 ppb (32) 0.12 ppb (2) N/A 9.7 μg/m3 (41) 41.0
 
Sept. 26, 2021, 4 a.m. 2.3 ppb (3) -0.4 ppb (0) N/A 3.0 ppb (3) N/A N/A 34.0 ppb (32) 0.11 ppb (2) N/A 11.2 μg/m3 (47) 47.0
 
Sept. 26, 2021, 3 a.m. 3.1 ppb (3) -0.3 ppb (0) N/A 3.0 ppb (3) N/A N/A 34.0 ppb (32) 0.12 ppb (2) N/A 7.3 μg/m3 (31) 32.0
 
Sept. 26, 2021, 2 a.m. 2.8 ppb (3) -0.3 ppb (0) N/A 3.0 ppb (3) N/A N/A 36.0 ppb (34) 0.12 ppb (2) N/A 9.3 μg/m3 (39) 39.0
 
Sept. 26, 2021, 1 a.m. 2.2 ppb (3) -0.3 ppb (0) N/A 3.0 ppb (3) N/A N/A 35.0 ppb (33) 0.12 ppb (2) N/A 8.8 μg/m3 (37) 37.0
 
Sept. 26, 2021, midnight 2.7 ppb (3) 0.0 ppb (0) N/A 3.0 ppb (3) N/A N/A 35.0 ppb (33) 0.12 ppb (2) N/A 9.0 μg/m3 (38) 38.0
 
Sept. 25, 2021, 11 p.m. 3.6 ppb (4) 0.2 ppb (1) N/A 3.0 ppb (3) N/A N/A 39.0 ppb (37) 0.13 ppb (2) N/A 8.8 μg/m3 (37) 37.0
 
Sept. 25, 2021, 10 p.m. 3.0 ppb (3) 0.2 ppb (1) N/A 3.0 ppb (3) N/A N/A 41.0 ppb (38) 0.13 ppb (2) N/A 8.3 μg/m3 (35) 38.0
 
Sept. 25, 2021, 9 p.m. 3.7 ppb (4) 0.3 ppb (1) N/A 3.0 ppb (3) N/A N/A 44.0 ppb (41) 0.13 ppb (2) N/A 12.5 μg/m3 (52) 52.0
 
Sept. 25, 2021, 8 p.m. 6.0 ppb (6) 0.9 ppb (1) N/A 5.0 ppb (5) N/A N/A 45.0 ppb (42) 0.15 ppb (2) N/A 16.0 μg/m3 (60) 60.0
 
Sept. 25, 2021, 7 p.m. 6.9 ppb (7) 1.1 ppb (2) N/A 6.0 ppb (6) N/A N/A 45.0 ppb (42) 0.18 ppb (3) N/A 18.8 μg/m3 (66) 66.0
 
Sept. 25, 2021, 6 p.m. 7.3 ppb (7) 1.3 ppb (2) N/A 6.0 ppb (6) N/A N/A 43.0 ppb (40) 0.19 ppb (3) N/A 10.3 μg/m3 (43) 43.0
 
Sept. 25, 2021, 5 p.m. 10.4 ppb (10) 2.5 ppb (3) N/A 8.0 ppb (8) N/A N/A 35.0 ppb (33) 0.23 ppb (3) N/A 13.9 μg/m3 (55) 55.0
 
Sept. 25, 2021, 4 p.m. 13.8 ppb (14) 3.7 ppb (4) N/A 10.0 ppb (10) N/A N/A 28.0 ppb (26) 0.25 ppb (3) N/A 15.6 μg/m3 (59) 59.0
 
Sept. 25, 2021, 3 p.m. 14.0 ppb (14) 3.1 ppb (3) N/A 11.0 ppb (11) N/A N/A 24.0 ppb (23) 0.26 ppb (4) N/A 12.2 μg/m3 (52) 52.0
 
Sept. 25, 2021, 2 p.m. 16.3 ppb (16) 2.1 ppb (2) N/A 14.0 ppb (14) N/A N/A 18.0 ppb (17) 0.31 ppb (4) N/A 16.0 μg/m3 (60) 60.0
 
Sept. 25, 2021, 1 p.m. 11.3 ppb (11) 0.4 ppb (1) N/A 11.0 ppb (11) N/A N/A 20.0 ppb (19) 0.23 ppb (3) N/A 12.9 μg/m3 (53) 53.0
 
Sept. 25, 2021, noon 15.4 ppb (15) 0.6 ppb (1) N/A 15.0 ppb (15) N/A N/A 15.0 ppb (14) 0.22 ppb (3) N/A 12.0 μg/m3 (50) 50.0
 
Sept. 25, 2021, 11 a.m. 6.5 ppb (7) 0.2 ppb (1) N/A 6.0 ppb (6) N/A N/A 25.0 ppb (24) 0.14 ppb (2) N/A 10.0 μg/m3 (42) 42.0
 
Sept. 25, 2021, 10 a.m. 6.0 ppb (6) 0.1 ppb (1) N/A 6.0 ppb (6) N/A N/A 28.0 ppb (26) 0.14 ppb (2) N/A 10.7 μg/m3 (45) 45.0
 
Sept. 25, 2021, 9 a.m. 9.7 ppb (10) 0.2 ppb (1) N/A 10.0 ppb (10) N/A N/A 24.0 ppb (23) 0.19 ppb (3) N/A 11.0 μg/m3 (46) 46.0
 
Sept. 25, 2021, 8 a.m. 12.0 ppb (12) 0.3 ppb (1) N/A 12.0 ppb (12) N/A N/A 21.0 ppb (20) 0.24 ppb (3) N/A 16.3 μg/m3 (60) 60.0
 
Sept. 25, 2021, 7 a.m. 12.9 ppb (13) 0.3 ppb (1) N/A 13.0 ppb (13) N/A N/A 20.0 ppb (19) 0.26 ppb (4) N/A 12.2 μg/m3 (52) 52.0
 
Sept. 25, 2021, 6 a.m. 11.2 ppb (11) 0.2 ppb (1) N/A 11.0 ppb (11) N/A N/A 22.0 ppb (21) 0.22 ppb (3) N/A 17.0 μg/m3 (62) 62.0
 
Sept. 25, 2021, 5 a.m. 8.6 ppb (9) -0.1 ppb (0) N/A 9.0 ppb (9) N/A N/A 26.0 ppb (25) 0.18 ppb (3) N/A 10.2 μg/m3 (43) 43.0
 
Sept. 25, 2021, 4 a.m. 19.1 ppb (19) 0.1 ppb (1) N/A 19.0 ppb (18) N/A N/A 19.0 ppb (18) 0.28 ppb (4) N/A 17.0 μg/m3 (62) 62.0
 
Sept. 25, 2021, 3 a.m. 17.8 ppb (17) 0.3 ppb (1) N/A 18.0 ppb (17) N/A N/A 21.0 ppb (20) 0.33 ppb (4) N/A 10.0 μg/m3 (42) 42.0
 
Sept. 25, 2021, 2 a.m. 10.5 ppb (10) 0.1 ppb (1) N/A 10.0 ppb (10) N/A N/A 27.0 ppb (25) 0.26 ppb (4) N/A 5.6 μg/m3 (24) 25.0
 
Sept. 25, 2021, 1 a.m. 14.6 ppb (14) 0.6 ppb (1) N/A 14.0 ppb (14) N/A N/A 26.0 ppb (25) 0.19 ppb (3) N/A 8.3 μg/m3 (35) 35.0
 
Sept. 25, 2021, midnight 13.3 ppb (13) 1.5 ppb (2) N/A 12.0 ppb (12) N/A N/A 28.0 ppb (26) 0.22 ppb (3) N/A 9.8 μg/m3 (41) 41.0
 
Sept. 24, 2021, 11 p.m. 7.2 ppb (7) 0.6 ppb (1) N/A 7.0 ppb (7) N/A N/A 39.0 ppb (37) 0.18 ppb (3) N/A 9.0 μg/m3 (38) 38.0
 
Sept. 24, 2021, 10 p.m. 6.7 ppb (7) 0.8 ppb (1) N/A 6.0 ppb (6) N/A N/A 45.0 ppb (42) 0.16 ppb (3) N/A 10.7 μg/m3 (45) 45.0
 
Sept. 24, 2021, 9 p.m. 9.6 ppb (10) 1.6 ppb (2) N/A 8.0 ppb (8) N/A N/A 49.0 ppb (46) 0.19 ppb (3) N/A 13.4 μg/m3 (54) 54.0
 
Sept. 24, 2021, 8 p.m. 12.2 ppb (12) 2.2 ppb (3) N/A 10.0 ppb (10) N/A N/A 46.0 ppb (43) 0.21 ppb (3) N/A 15.8 μg/m3 (59) 59.0
 
Sept. 24, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 24.4 μg/m3 (77) 77.0
 
Sept. 24, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 28.6 μg/m3 (86) 86.0
 
Sept. 24, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 31.6 μg/m3 (93) 93.0
 
Sept. 24, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 29.9 μg/m3 (89) 89.0
 
Sept. 24, 2021, 3 p.m. 20.1 ppb (19) 4.3 ppb (5) N/A 16.0 ppb (16) N/A N/A 16.0 ppb (15) 0.31 ppb (4) N/A 32.8 μg/m3 (95) 95.0
 
Sept. 24, 2021, 2 p.m. 19.2 ppb (19) 2.2 ppb (3) N/A 17.0 ppb (17) N/A N/A 15.0 ppb (14) 0.3 ppb (4) N/A 22.2 μg/m3 (73) 73.0
 
Sept. 24, 2021, 1 p.m. 14.6 ppb (14) 0.5 ppb (1) N/A 14.0 ppb (14) N/A N/A 18.0 ppb (17) 0.27 ppb (4) N/A 18.0 μg/m3 (64) 64.0
 
Sept. 24, 2021, noon 13.2 ppb (13) 0.5 ppb (1) N/A 13.0 ppb (13) N/A N/A 20.0 ppb (19) 0.21 ppb (3) N/A 14.8 μg/m3 (57) 57.0
 
Sept. 24, 2021, 11 a.m. 13.0 ppb (13) 0.6 ppb (1) N/A 12.0 ppb (12) N/A N/A 19.0 ppb (18) 0.2 ppb (3) N/A 11.5 μg/m3 (48) 48.0
 
Sept. 24, 2021, 10 a.m. 12.9 ppb (13) 0.5 ppb (1) N/A 12.0 ppb (12) N/A N/A 20.0 ppb (19) 0.18 ppb (3) N/A 10.2 μg/m3 (43) 43.0
 
Sept. 24, 2021, 9 a.m. 11.5 ppb (11) 0.4 ppb (1) N/A 11.0 ppb (11) N/A N/A 23.0 ppb (22) 0.16 ppb (3) N/A 9.0 μg/m3 (38) 38.0
 
Sept. 24, 2021, 8 a.m. 12.0 ppb (12) 0.3 ppb (1) N/A 12.0 ppb (12) N/A N/A 23.0 ppb (22) 0.17 ppb (3) N/A 47.3 μg/m3 (131) 131.0
 
Sept. 24, 2021, 7 a.m. 5.6 ppb (6) 0.1 ppb (1) N/A 6.0 ppb (6) N/A N/A 29.0 ppb (27) 0.17 ppb (3) N/A 7.3 μg/m3 (31) 31.0
 
Sept. 24, 2021, 6 a.m. 5.5 ppb (6) 0.2 ppb (1) N/A 5.0 ppb (5) N/A N/A 30.0 ppb (28) 0.16 ppb (3) N/A 9.3 μg/m3 (39) 39.0
 
Sept. 24, 2021, 5 a.m. 7.4 ppb (7) 0.0 ppb (0) N/A 7.0 ppb (7) N/A N/A 28.0 ppb (26) 0.19 ppb (3) N/A 10.7 μg/m3 (45) 45.0
 
Sept. 24, 2021, 4 a.m. 6.5 ppb (7) 0.0 ppb (0) N/A 7.0 ppb (7) N/A N/A 30.0 ppb (28) 0.17 ppb (3) N/A 9.0 μg/m3 (38) 38.0
 
Sept. 24, 2021, 3 a.m. 6.1 ppb (6) -0.1 ppb (0) N/A 6.0 ppb (6) N/A N/A 31.0 ppb (29) 0.17 ppb (3) N/A 10.5 μg/m3 (44) 44.0
 
Sept. 24, 2021, 2 a.m. 7.0 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 13.4 μg/m3 (54) 54.0
 
Sept. 24, 2021, 1 a.m. 7.7 ppb (8) 0.1 ppb (1) N/A 8.0 ppb (8) N/A N/A 32.0 ppb (30) 0.19 ppb (3) N/A 12.0 μg/m3 (50) 50.0
 
Sept. 24, 2021, midnight 7.1 ppb (7) 0.2 ppb (1) N/A 7.0 ppb (7) N/A N/A 37.0 ppb (35) 0.19 ppb (3) N/A 8.6 μg/m3 (36) 36.0
 
Sept. 23, 2021, 11 p.m. 7.5 ppb (8) 0.5 ppb (1) N/A 7.0 ppb (7) N/A N/A 36.0 ppb (34) 0.18 ppb (3) N/A 6.4 μg/m3 (27) 34.0
 
Sept. 23, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 10.0 μg/m3 (42) 42.0
 
Sept. 23, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 19.6 μg/m3 (67) 67.0
 
Sept. 23, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 18.8 μg/m3 (66) 66.0
 
Sept. 23, 2021, 7 p.m. 20.7 ppb (20) 5.2 ppb (5) N/A 16.0 ppb (16) N/A N/A 39.0 ppb (37) 0.27 ppb (4) N/A 15.6 μg/m3 (59) 59.0
 
Sept. 23, 2021, 6 p.m. 34.6 ppb (33) 11.4 ppb (11) N/A 23.0 ppb (22) N/A N/A 28.0 ppb (26) 0.34 ppb (4) N/A 16.0 μg/m3 (60) 60.0
 
Sept. 23, 2021, 5 p.m. 25.9 ppb (25) 8.7 ppb (9) N/A 17.0 ppb (17) N/A N/A 27.0 ppb (25) 0.3 ppb (4) N/A 19.3 μg/m3 (67) 67.0
 
Sept. 23, 2021, 4 p.m. 21.1 ppb (20) 7.1 ppb (7) N/A 14.0 ppb (14) N/A N/A 24.0 ppb (23) 0.27 ppb (4) N/A 14.1 μg/m3 (56) 56.0
 
Sept. 23, 2021, 3 p.m. 22.5 ppb (22) 6.9 ppb (7) N/A 16.0 ppb (16) N/A N/A 20.0 ppb (19) 0.29 ppb (4) N/A 12.9 μg/m3 (53) 53.0
 
Sept. 23, 2021, 2 p.m. 17.8 ppb (17) 2.6 ppb (3) N/A 15.0 ppb (15) N/A N/A 19.0 ppb (18) 0.29 ppb (4) N/A 12.0 μg/m3 (50) 50.0
 
Sept. 23, 2021, 1 p.m. 17.4 ppb (17) 1.8 ppb (2) N/A 16.0 ppb (16) N/A N/A 18.0 ppb (17) 0.29 ppb (4) N/A 9.0 μg/m3 (38) 38.0
 
Sept. 23, 2021, noon 7.0 ppb (7) 0.5 ppb (1) N/A 7.0 ppb (7) N/A N/A 27.0 ppb (25) 0.16 ppb (3) N/A 7.8 μg/m3 (33) 33.0
 
Sept. 23, 2021, 11 a.m. 7.4 ppb (7) 0.2 ppb (1) N/A 7.0 ppb (7) N/A N/A 26.0 ppb (25) 0.14 ppb (2) N/A 9.3 μg/m3 (39) 39.0
 
Sept. 23, 2021, 10 a.m. 7.8 ppb (8) 0.2 ppb (1) N/A 8.0 ppb (8) N/A N/A 25.0 ppb (24) 0.1 ppb (2) N/A 10.0 μg/m3 (42) 42.0
 
Sept. 23, 2021, 9 a.m. 6.9 ppb (7) 0.2 ppb (1) N/A 7.0 ppb (7) N/A N/A 26.0 ppb (25) 0.12 ppb (2) N/A 6.3 μg/m3 (27) 27.0
 
Sept. 23, 2021, 8 a.m. 7.5 ppb (8) 0.2 ppb (1) N/A 7.0 ppb (7) N/A N/A 24.0 ppb (23) 0.11 ppb (2) N/A 20.0 μg/m3 (68) 68.0
 
Sept. 23, 2021, 7 a.m. 9.5 ppb (9) 0.2 ppb (1) N/A 9.0 ppb (9) N/A N/A 22.0 ppb (21) 0.15 ppb (2) N/A 10.2 μg/m3 (43) 43.0
 
Sept. 23, 2021, 6 a.m. 11.4 ppb (11) 0.2 ppb (1) N/A 11.0 ppb (11) N/A N/A 21.0 ppb (20) 0.16 ppb (3) N/A 11.7 μg/m3 (49) 49.0
 
Sept. 23, 2021, 5 a.m. 7.6 ppb (8) 0.1 ppb (1) N/A 7.0 ppb (7) N/A N/A 26.0 ppb (25) 0.14 ppb (2) N/A 11.7 μg/m3 (49) 49.0
 
Sept. 23, 2021, 4 a.m. 5.8 ppb (6) -0.1 ppb (0) N/A 6.0 ppb (6) N/A N/A 30.0 ppb (28) 0.13 ppb (2) N/A 10.3 μg/m3 (43) 43.0
 
Sept. 23, 2021, 3 a.m. 6.3 ppb (6) -0.1 ppb (0) N/A 6.0 ppb (6) N/A N/A 30.0 ppb (28) 0.14 ppb (2) N/A 6.1 μg/m3 (26) 28.0
 
Sept. 23, 2021, 2 a.m. 6.8 ppb (7) 0.0 ppb (0) N/A 7.0 ppb (7) N/A N/A 31.0 ppb (29) 0.14 ppb (2) N/A 4.6 μg/m3 (20) 29.0
 
Sept. 23, 2021, 1 a.m. 5.2 ppb (5) 0.2 ppb (1) N/A 5.0 ppb (5) N/A N/A 33.0 ppb (31) 0.12 ppb (2) N/A 5.6 μg/m3 (24) 31.0
 
Sept. 23, 2021, midnight 5.5 ppb (6) 0.7 ppb (1) N/A 5.0 ppb (5) N/A N/A 36.0 ppb (34) 0.12 ppb (2) N/A 3.9 μg/m3 (17) 34.0
 
Sept. 22, 2021, 11 p.m. 6.8 ppb (7) 1.1 ppb (2) N/A 6.0 ppb (6) N/A N/A 38.0 ppb (36) 0.12 ppb (2) N/A 5.4 μg/m3 (23) 36.0
 
Sept. 22, 2021, 10 p.m. 5.3 ppb (5) 0.9 ppb (1) N/A 4.0 ppb (4) N/A N/A 42.0 ppb (39) 0.13 ppb (2) N/A 8.3 μg/m3 (35) 39.0
 
Sept. 22, 2021, 9 p.m. 5.7 ppb (6) 0.9 ppb (1) N/A 5.0 ppb (5) N/A N/A 47.0 ppb (44) 0.15 ppb (2) N/A 8.6 μg/m3 (36) 44.0
 
Sept. 22, 2021, 8 p.m. 7.9 ppb (8) 1.0 ppb (1) N/A 7.0 ppb (7) N/A N/A 58.0 ppb (61) 0.2 ppb (3) N/A 9.3 μg/m3 (39) 61.0
 
Sept. 22, 2021, 7 p.m. 9.3 ppb (9) 1.4 ppb (2) N/A 8.0 ppb (8) N/A N/A 51.0 ppb (48) 0.21 ppb (3) N/A 12.4 μg/m3 (52) 52.0
 
Sept. 22, 2021, 6 p.m. 14.4 ppb (14) 3.1 ppb (3) N/A 11.0 ppb (11) N/A N/A 42.0 ppb (39) 0.26 ppb (4) N/A 15.3 μg/m3 (58) 58.0
 
Sept. 22, 2021, 5 p.m. 40.3 ppb (39) 13.5 ppb (13) N/A 27.0 ppb (26) N/A N/A 27.0 ppb (25) 0.44 ppb (5) N/A 19.0 μg/m3 (66) 66.0
 
Sept. 22, 2021, 4 p.m. 56.7 ppb (54) 22.7 ppb (22) N/A 34.0 ppb (33) N/A N/A 16.0 ppb (15) 0.6 ppb (7) N/A 17.6 μg/m3 (63) 63.0
 
Sept. 22, 2021, 3 p.m. 48.0 ppb (46) 20.0 ppb (19) N/A 28.0 ppb (27) N/A N/A 11.0 ppb (11) 0.62 ppb (7) N/A 14.1 μg/m3 (56) 56.0
 
Sept. 22, 2021, 2 p.m. 48.0 ppb (46) 21.8 ppb (21) N/A 26.0 ppb (25) N/A N/A 4.0 ppb (4) 0.63 ppb (7) N/A 16.3 μg/m3 (60) 60.0
 
Sept. 22, 2021, 1 p.m. 47.7 ppb (45) 22.0 ppb (21) N/A 26.0 ppb (25) N/A N/A 1.0 ppb (1) 0.72 ppb (8) N/A 15.3 μg/m3 (58) 58.0
 
Sept. 22, 2021, noon 31.4 ppb (30) 6.9 ppb (7) N/A 25.0 ppb (24) N/A N/A 1.0 ppb (1) 0.49 ppb (6) N/A 10.8 μg/m3 (46) 46.0
 
Sept. 22, 2021, 11 a.m. 19.6 ppb (19) 1.9 ppb (2) N/A 18.0 ppb (17) N/A N/A 6.0 ppb (6) 0.34 ppb (4) N/A 4.6 μg/m3 (20) 20.0
 
Sept. 22, 2021, 10 a.m. 17.6 ppb (17) 1.3 ppb (2) N/A 16.0 ppb (16) N/A N/A 11.0 ppb (11) 0.31 ppb (4) N/A 9.0 μg/m3 (38) 38.0
 
Sept. 22, 2021, 9 a.m. 16.8 ppb (16) 0.7 ppb (1) N/A 16.0 ppb (16) N/A N/A 13.0 ppb (13) 0.31 ppb (4) N/A 10.5 μg/m3 (44) 44.0
 
Sept. 22, 2021, 8 a.m. 16.9 ppb (16) 0.7 ppb (1) N/A 16.0 ppb (16) N/A N/A 14.0 ppb (13) 0.29 ppb (4) N/A 25.6 μg/m3 (80) 80.0
 
Sept. 22, 2021, 7 a.m. 16.9 ppb (16) 0.4 ppb (1) N/A 17.0 ppb (17) N/A N/A 16.0 ppb (15) 0.25 ppb (3) N/A 11.2 μg/m3 (47) 47.0
 
Sept. 22, 2021, 6 a.m. 7.8 ppb (8) 0.2 ppb (1) N/A 8.0 ppb (8) N/A N/A 27.0 ppb (25) 0.19 ppb (3) N/A 9.8 μg/m3 (41) 41.0
 
Sept. 22, 2021, 5 a.m. 6.7 ppb (7) 0.0 ppb (0) N/A 7.0 ppb (7) N/A N/A 35.0 ppb (33) 0.17 ppb (3) N/A 11.2 μg/m3 (47) 47.0
 
Sept. 22, 2021, 4 a.m. 10.4 ppb (10) -0.1 ppb (0) N/A 11.0 ppb (11) N/A N/A 36.0 ppb (34) 0.18 ppb (3) N/A 15.6 μg/m3 (59) 59.0
 
Sept. 22, 2021, 3 a.m. 10.9 ppb (11) 0.0 ppb (0) N/A 11.0 ppb (11) N/A N/A 33.0 ppb (31) 0.2 ppb (3) N/A 10.8 μg/m3 (46) 46.0
 
Sept. 22, 2021, 2 a.m. 11.0 ppb (11) 0.0 ppb (0) N/A 11.0 ppb (11) N/A N/A 35.0 ppb (33) 0.22 ppb (3) N/A 9.5 μg/m3 (40) 40.0
 
Sept. 22, 2021, 1 a.m. 7.9 ppb (8) 0.0 ppb (0) N/A 8.0 ppb (8) N/A N/A 41.0 ppb (38) 0.21 ppb (3) N/A 5.9 μg/m3 (25) 38.0
 
Sept. 22, 2021, midnight 8.4 ppb (8) 0.2 ppb (1) N/A 8.0 ppb (8) N/A N/A 70.0 ppb (100) 0.25 ppb (3) N/A 15.3 μg/m3 (58) 100.0
 
Sept. 21, 2021, 11 p.m. 13.0 ppb (13) 0.9 ppb (1) N/A 12.0 ppb (12) N/A N/A 66.0 ppb (87) 0.29 ppb (4) N/A 14.4 μg/m3 (56) 87.0
 
Sept. 21, 2021, 10 p.m. 14.4 ppb (14) 1.6 ppb (2) N/A 13.0 ppb (13) N/A N/A 60.0 ppb (68) 0.31 ppb (4) N/A 17.3 μg/m3 (62) 68.0
 
Sept. 21, 2021, 9 p.m. 17.3 ppb (17) 1.9 ppb (2) N/A 15.0 ppb (15) N/A N/A 58.0 ppb (61) 0.34 ppb (4) N/A 20.3 μg/m3 (69) 69.0
 
Sept. 21, 2021, 8 p.m. 26.2 ppb (25) 3.7 ppb (4) N/A 23.0 ppb (22) N/A N/A 60.0 ppb (68) 0.42 ppb (5) N/A 22.3 μg/m3 (73) 73.0
 
Sept. 21, 2021, 7 p.m. 35.3 ppb (34) 5.9 ppb (6) N/A 30.0 ppb (29) N/A N/A 56.0 ppb (55) 0.47 ppb (6) N/A 19.3 μg/m3 (67) 67.0
 
Sept. 21, 2021, 6 p.m. 36.6 ppb (35) 7.6 ppb (8) N/A 29.0 ppb (28) N/A N/A 44.0 ppb (41) 0.54 ppb (6) N/A 18.3 μg/m3 (65) 65.0