ID: 1894

AQSQID: 060371302

Site Name: Compton

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

Updated: March 3, 2021, 11:32 a.m.

Location: Compton (E Compton), CA

Reporting: True, Located: True

Current AQI: 43.0

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
Feb. 16, 2021, noon 6.6 ppb (7) 0.3 ppb (1) N/A 6.0 ppb (6) N/A N/A 21.0 ppb (20) 0.12 ppb (2) N/A 5.6 μg/m3 (24) 24.0
 
Feb. 16, 2021, 11 a.m. 7.0 ppb (7) 0.1 ppb (1) N/A 7.0 ppb (7) N/A N/A 18.0 ppb (17) 0.13 ppb (2) N/A 7.1 μg/m3 (30) 30.0
 
Feb. 16, 2021, 10 a.m. 8.9 ppb (9) 0.5 ppb (1) N/A 8.0 ppb (8) N/A N/A 16.0 ppb (15) 0.17 ppb (3) N/A 7.1 μg/m3 (30) 30.0
 
Feb. 16, 2021, 9 a.m. 8.9 ppb (9) 0.2 ppb (1) N/A 9.0 ppb (9) N/A N/A 16.0 ppb (15) 0.16 ppb (3) N/A 7.8 μg/m3 (33) 33.0
 
Feb. 16, 2021, 8 a.m. 8.2 ppb (8) 0.3 ppb (1) N/A 8.0 ppb (8) N/A N/A 18.0 ppb (17) 0.15 ppb (2) N/A 7.3 μg/m3 (31) 31.0
 
Feb. 16, 2021, 7 a.m. 12.4 ppb (12) 0.4 ppb (1) N/A 12.0 ppb (12) N/A N/A 15.0 ppb (14) 0.17 ppb (3) N/A 6.4 μg/m3 (27) 27.0
 
Feb. 16, 2021, 6 a.m. 20.9 ppb (20) 1.3 ppb (2) N/A 20.0 ppb (19) N/A N/A 8.0 ppb (8) 0.24 ppb (3) N/A 7.8 μg/m3 (33) 33.0
 
Feb. 16, 2021, 5 a.m. 33.4 ppb (32) 2.5 ppb (3) N/A 31.0 ppb (30) N/A N/A 4.0 ppb (4) 0.35 ppb (4) N/A 12.4 μg/m3 (52) 52.0
 
Feb. 16, 2021, 4 a.m. 28.8 ppb (28) 1.5 ppb (2) N/A 27.0 ppb (26) N/A N/A 7.0 ppb (7) 0.33 ppb (4) N/A 9.8 μg/m3 (41) 41.0
 
Feb. 16, 2021, 3 a.m. 26.1 ppb (25) 1.0 ppb (1) N/A 25.0 ppb (24) N/A N/A 11.0 ppb (11) 0.35 ppb (4) N/A 8.1 μg/m3 (34) 34.0
 
Feb. 16, 2021, 2 a.m. 14.2 ppb (14) 0.2 ppb (1) N/A 14.0 ppb (14) N/A N/A 23.0 ppb (22) 0.21 ppb (3) N/A 8.0 μg/m3 (34) 34.0
 
Feb. 16, 2021, 1 a.m. 12.6 ppb (12) 0.5 ppb (1) N/A 12.0 ppb (12) N/A N/A 25.0 ppb (24) 0.2 ppb (3) N/A 8.6 μg/m3 (36) 36.0
 
Feb. 16, 2021, midnight 10.3 ppb (10) 1.1 ppb (2) N/A 9.0 ppb (9) N/A N/A 28.0 ppb (26) 0.15 ppb (2) N/A 8.6 μg/m3 (36) 36.0
 
Feb. 15, 2021, 11 p.m. 12.2 ppb (12) 1.9 ppb (2) N/A 10.0 ppb (10) N/A N/A 27.0 ppb (25) 0.15 ppb (2) N/A 6.9 μg/m3 (29) 29.0
 
Feb. 15, 2021, 10 p.m. 14.3 ppb (14) 3.3 ppb (4) N/A 11.0 ppb (11) N/A N/A 26.0 ppb (25) 0.18 ppb (3) N/A 9.1 μg/m3 (38) 38.0
 
Feb. 15, 2021, 9 p.m. 28.1 ppb (27) 9.6 ppb (10) N/A 19.0 ppb (18) N/A N/A 20.0 ppb (19) 0.22 ppb (3) N/A 10.8 μg/m3 (46) 46.0
 
Feb. 15, 2021, 8 p.m. 17.7 ppb (17) 5.0 ppb (5) N/A 13.0 ppb (13) N/A N/A 23.0 ppb (22) 0.25 ppb (3) N/A 11.0 μg/m3 (46) 46.0
 
Feb. 15, 2021, 7 p.m. 17.4 ppb (17) 5.1 ppb (5) N/A 12.0 ppb (12) N/A N/A 22.0 ppb (21) 0.26 ppb (4) N/A 14.6 μg/m3 (57) 57.0
 
Feb. 15, 2021, 6 p.m. 19.2 ppb (19) 6.5 ppb (7) N/A 13.0 ppb (13) N/A N/A 20.0 ppb (19) 0.26 ppb (4) N/A 13.4 μg/m3 (54) 54.0
 
Feb. 15, 2021, 5 p.m. 42.2 ppb (40) 20.0 ppb (19) N/A 22.0 ppb (21) N/A N/A 12.0 ppb (12) 0.43 ppb (5) N/A 14.8 μg/m3 (57) 57.0
 
Feb. 15, 2021, 4 p.m. 64.8 ppb (63) 34.1 ppb (33) N/A 31.0 ppb (30) N/A N/A 3.0 ppb (3) 0.65 ppb (8) N/A 10.9 μg/m3 (46) 63.0
 
Feb. 15, 2021, 3 p.m. 90.2 ppb (90) 57.9 ppb (56) N/A 33.0 ppb (32) N/A N/A 0.0 ppb (0) 0.98 ppb (12) N/A 14.6 μg/m3 (57) 90.0
 
Feb. 15, 2021, 2 p.m. 85.9 ppb (85) 56.4 ppb (54) N/A 30.0 ppb (29) N/A N/A 0.0 ppb (0) 1.13 ppb (13) N/A 13.3 μg/m3 (54) 85.0
 
Feb. 15, 2021, 1 p.m. 47.7 ppb (45) 18.8 ppb (18) N/A 29.0 ppb (28) N/A N/A 0.0 ppb (0) 0.66 ppb (8) N/A 9.2 μg/m3 (39) 45.0
 
Feb. 15, 2021, noon 33.4 ppb (32) 6.6 ppb (7) N/A 27.0 ppb (26) N/A N/A 0.0 ppb (0) 0.49 ppb (6) N/A 9.0 μg/m3 (38) 38.0
 
Feb. 15, 2021, 11 a.m. 32.3 ppb (31) 6.0 ppb (6) N/A 26.0 ppb (25) N/A N/A 1.0 ppb (1) 0.46 ppb (6) N/A 10.2 μg/m3 (43) 43.0
 
Feb. 15, 2021, 10 a.m. 34.2 ppb (33) 6.2 ppb (6) N/A 28.0 ppb (27) N/A N/A 0.0 ppb (0) 0.6 ppb (7) N/A 13.4 μg/m3 (54) 54.0
 
Feb. 15, 2021, 9 a.m. 35.8 ppb (34) 5.7 ppb (6) N/A 30.0 ppb (29) N/A N/A 0.0 ppb (0) 0.66 ppb (8) N/A 15.3 μg/m3 (58) 58.0
 
Feb. 15, 2021, 8 a.m. 37.9 ppb (36) 6.0 ppb (6) N/A 32.0 ppb (31) N/A N/A 0.0 ppb (0) 0.78 ppb (10) N/A 16.8 μg/m3 (61) 61.0
 
Feb. 15, 2021, 7 a.m. 21.8 ppb (21) 0.7 ppb (1) N/A 21.0 ppb (20) N/A N/A 12.0 ppb (12) 0.55 ppb (7) N/A 8.3 μg/m3 (35) 35.0
 
Feb. 15, 2021, 6 a.m. 10.9 ppb (11) 0.2 ppb (1) N/A 11.0 ppb (11) N/A N/A 26.0 ppb (25) 0.28 ppb (4) N/A 4.4 μg/m3 (19) 25.0
 
Feb. 15, 2021, 5 a.m. 5.8 ppb (6) 0.0 ppb (0) N/A 6.0 ppb (6) N/A N/A 32.0 ppb (30) 0.18 ppb (3) N/A 2.5 μg/m3 (11) 30.0
 
Feb. 15, 2021, 4 a.m. 5.3 ppb (5) 0.1 ppb (1) N/A 5.0 ppb (5) N/A N/A 34.0 ppb (32) 0.17 ppb (3) N/A 3.9 μg/m3 (17) 32.0
 
Feb. 15, 2021, 3 a.m. 5.5 ppb (6) 0.2 ppb (1) N/A 5.0 ppb (5) N/A N/A 34.0 ppb (32) 0.17 ppb (3) N/A 4.2 μg/m3 (18) 32.0
 
Feb. 15, 2021, 2 a.m. 5.3 ppb (5) 0.0 ppb (0) N/A 5.0 ppb (5) N/A N/A 33.0 ppb (31) 0.16 ppb (3) N/A 4.9 μg/m3 (21) 31.0
 
Feb. 15, 2021, 1 a.m. 4.3 ppb (5) 0.1 ppb (1) N/A 4.0 ppb (4) N/A N/A 32.0 ppb (30) 0.15 ppb (2) N/A 6.6 μg/m3 (28) 30.0
 
Feb. 15, 2021, midnight 3.4 ppb (4) 0.2 ppb (1) N/A 3.0 ppb (3) N/A N/A 35.0 ppb (33) 0.13 ppb (2) N/A 3.7 μg/m3 (16) 33.0
 
Feb. 14, 2021, 11 p.m. 4.3 ppb (5) 0.7 ppb (1) N/A 4.0 ppb (4) N/A N/A 34.0 ppb (32) 0.15 ppb (2) N/A 4.4 μg/m3 (19) 32.0
 
Feb. 14, 2021, 10 p.m. 4.9 ppb (5) 0.9 ppb (1) N/A 4.0 ppb (4) N/A N/A 32.0 ppb (30) 0.15 ppb (2) N/A 5.4 μg/m3 (23) 30.0
 
Feb. 14, 2021, 9 p.m. 4.8 ppb (5) 1.1 ppb (2) N/A 4.0 ppb (4) N/A N/A 34.0 ppb (32) 0.16 ppb (3) N/A 3.4 μg/m3 (15) 32.0
 
Feb. 14, 2021, 8 p.m. 3.9 ppb (4) 0.9 ppb (1) N/A 3.0 ppb (3) N/A N/A 35.0 ppb (33) 0.16 ppb (3) N/A 3.7 μg/m3 (16) 33.0
 
Feb. 14, 2021, 7 p.m. 4.7 ppb (5) 1.1 ppb (2) N/A 4.0 ppb (4) N/A N/A 34.0 ppb (32) 0.16 ppb (3) N/A 5.9 μg/m3 (25) 32.0
 
Feb. 14, 2021, 6 p.m. 4.6 ppb (5) 1.2 ppb (2) N/A 3.0 ppb (3) N/A N/A 33.0 ppb (31) 0.15 ppb (2) N/A 5.6 μg/m3 (24) 31.0
 
Feb. 14, 2021, 5 p.m. 4.5 ppb (5) 1.1 ppb (2) N/A 3.0 ppb (3) N/A N/A 32.0 ppb (30) 0.18 ppb (3) N/A 5.4 μg/m3 (23) 30.0
 
Feb. 14, 2021, 4 p.m. 5.4 ppb (6) 1.2 ppb (2) N/A 4.0 ppb (4) N/A N/A 29.0 ppb (27) 0.16 ppb (3) N/A 2.6 μg/m3 (11) 27.0
 
Feb. 14, 2021, 3 p.m. 5.0 ppb (5) 0.5 ppb (1) N/A 5.0 ppb (5) N/A N/A 29.0 ppb (27) 0.15 ppb (2) N/A 2.1 μg/m3 (9) 27.0
 
Feb. 14, 2021, 2 p.m. 3.5 ppb (4) 0.0 ppb (0) N/A 4.0 ppb (4) N/A N/A 30.0 ppb (28) 0.13 ppb (2) N/A 2.4 μg/m3 (10) 28.0
 
Feb. 14, 2021, 1 p.m. 4.9 ppb (5) 0.1 ppb (1) N/A 5.0 ppb (5) N/A N/A 28.0 ppb (26) 0.13 ppb (2) N/A 3.1 μg/m3 (13) 26.0
 
Feb. 14, 2021, noon 7.0 ppb (7) 1.2 ppb (2) N/A 6.0 ppb (6) N/A N/A 28.0 ppb (26) 0.13 ppb (2) N/A 2.7 μg/m3 (12) 26.0
 
Feb. 14, 2021, 11 a.m. 3.6 ppb (4) -0.1 ppb (0) N/A 4.0 ppb (4) N/A N/A 30.0 ppb (28) 0.12 ppb (2) N/A 3.1 μg/m3 (13) 28.0
 
Feb. 14, 2021, 10 a.m. 5.4 ppb (6) -0.1 ppb (0) N/A 6.0 ppb (6) N/A N/A 29.0 ppb (27) 0.15 ppb (2) N/A 3.4 μg/m3 (15) 27.0
 
Feb. 14, 2021, 9 a.m. 4.8 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 2.9 μg/m3 (13) 29.0
 
Feb. 14, 2021, 8 a.m. 3.6 ppb (4) 0.2 ppb (1) N/A 3.0 ppb (3) N/A N/A 32.0 ppb (30) 0.12 ppb (2) N/A 3.6 μg/m3 (16) 30.0
 
Feb. 14, 2021, 7 a.m. 5.6 ppb (6) 0.4 ppb (1) N/A 5.0 ppb (5) N/A N/A 31.0 ppb (29) 0.15 ppb (2) N/A 5.1 μg/m3 (22) 29.0
 
Feb. 14, 2021, 6 a.m. 5.5 ppb (6) 0.2 ppb (1) N/A 5.0 ppb (5) N/A N/A 32.0 ppb (30) 0.16 ppb (3) N/A 4.4 μg/m3 (19) 30.0
 
Feb. 14, 2021, 5 a.m. 7.5 ppb (8) 0.1 ppb (1) N/A 7.0 ppb (7) N/A N/A 29.0 ppb (27) 0.2 ppb (3) N/A 7.6 μg/m3 (32) 32.0
 
Feb. 14, 2021, 4 a.m. 15.6 ppb (15) 0.7 ppb (1) N/A 15.0 ppb (15) N/A N/A 19.0 ppb (18) 0.37 ppb (5) N/A 13.6 μg/m3 (55) 55.0
 
Feb. 14, 2021, 3 a.m. 11.4 ppb (11) 0.3 ppb (1) N/A 11.0 ppb (11) N/A N/A 20.0 ppb (19) 0.26 ppb (4) N/A 11.8 μg/m3 (50) 50.0
 
Feb. 14, 2021, 2 a.m. 9.8 ppb (10) 0.2 ppb (1) N/A 10.0 ppb (10) N/A N/A 23.0 ppb (22) 0.22 ppb (3) N/A 8.3 μg/m3 (35) 35.0
 
Feb. 14, 2021, 1 a.m. 8.1 ppb (8) 0.3 ppb (1) N/A 8.0 ppb (8) N/A N/A 26.0 ppb (25) 0.17 ppb (3) N/A 8.6 μg/m3 (36) 36.0
 
Feb. 14, 2021, midnight 6.0 ppb (6) 0.6 ppb (1) N/A 5.0 ppb (5) N/A N/A 30.0 ppb (28) 0.13 ppb (2) N/A 7.3 μg/m3 (31) 31.0
 
Feb. 13, 2021, 11 p.m. 4.0 ppb (4) 0.7 ppb (1) N/A 3.0 ppb (3) N/A N/A 32.0 ppb (30) 0.11 ppb (2) N/A 5.4 μg/m3 (23) 30.0
 
Feb. 13, 2021, 10 p.m. 5.6 ppb (6) 1.2 ppb (2) N/A 5.0 ppb (5) N/A N/A 31.0 ppb (29) 0.12 ppb (2) N/A 5.9 μg/m3 (25) 29.0
 
Feb. 13, 2021, 9 p.m. 6.1 ppb (6) 1.2 ppb (2) N/A 5.0 ppb (5) N/A N/A 33.0 ppb (31) 0.14 ppb (2) N/A 7.4 μg/m3 (31) 31.0
 
Feb. 13, 2021, 8 p.m. 14.6 ppb (14) 3.8 ppb (4) N/A 11.0 ppb (11) N/A N/A 24.0 ppb (23) 0.19 ppb (3) N/A 8.3 μg/m3 (35) 35.0
 
Feb. 13, 2021, 7 p.m. 11.2 ppb (11) 2.7 ppb (3) N/A 8.0 ppb (8) N/A N/A 25.0 ppb (24) 0.17 ppb (3) N/A 11.5 μg/m3 (48) 48.0
 
Feb. 13, 2021, 6 p.m. 9.5 ppb (9) 2.2 ppb (3) N/A 7.0 ppb (7) N/A N/A 24.0 ppb (23) 0.17 ppb (3) N/A 10.8 μg/m3 (46) 46.0
 
Feb. 13, 2021, 5 p.m. 11.7 ppb (12) 2.5 ppb (3) N/A 9.0 ppb (9) N/A N/A 21.0 ppb (20) 0.19 ppb (3) N/A 11.7 μg/m3 (49) 49.0
 
Feb. 13, 2021, 4 p.m. 18.5 ppb (18) 3.7 ppb (4) N/A 15.0 ppb (15) N/A N/A 15.0 ppb (14) 0.27 ppb (4) N/A 10.7 μg/m3 (45) 45.0
 
Feb. 13, 2021, 3 p.m. 27.0 ppb (26) 4.8 ppb (5) N/A 22.0 ppb (21) N/A N/A 7.0 ppb (7) 0.35 ppb (4) N/A 8.5 μg/m3 (36) 36.0
 
Feb. 13, 2021, 2 p.m. 36.9 ppb (35) 11.0 ppb (11) N/A 26.0 ppb (25) N/A N/A 0.0 ppb (0) 0.49 ppb (6) N/A 10.7 μg/m3 (45) 45.0
 
Feb. 13, 2021, 1 p.m. 33.6 ppb (32) 10.8 ppb (11) N/A 23.0 ppb (22) N/A N/A 0.0 ppb (0) 0.54 ppb (6) N/A 12.2 μg/m3 (52) 52.0
 
Feb. 13, 2021, noon 22.2 ppb (21) 2.4 ppb (3) N/A 20.0 ppb (19) N/A N/A 3.0 ppb (3) 0.39 ppb (5) N/A 9.0 μg/m3 (38) 38.0
 
Feb. 13, 2021, 11 a.m. 19.2 ppb (19) 1.2 ppb (2) N/A 18.0 ppb (17) N/A N/A 6.0 ppb (6) 0.28 ppb (4) N/A 6.8 μg/m3 (29) 29.0
 
Feb. 13, 2021, 10 a.m. 19.4 ppb (19) 1.5 ppb (2) N/A 18.0 ppb (17) N/A N/A 7.0 ppb (7) 0.25 ppb (3) N/A 8.0 μg/m3 (34) 34.0
 
Feb. 13, 2021, 9 a.m. 36.8 ppb (35) 9.7 ppb (10) N/A 27.0 ppb (26) N/A N/A 0.0 ppb (0) 0.53 ppb (6) N/A 11.5 μg/m3 (48) 48.0
 
Feb. 13, 2021, 8 a.m. 46.6 ppb (44) 18.8 ppb (18) N/A 28.0 ppb (27) N/A N/A 0.0 ppb (0) 0.79 ppb (10) N/A 13.8 μg/m3 (55) 55.0
 
Feb. 13, 2021, 7 a.m. 47.1 ppb (45) 18.4 ppb (18) N/A 29.0 ppb (28) N/A N/A 0.0 ppb (0) 0.84 ppb (10) N/A 14.1 μg/m3 (56) 56.0
 
Feb. 13, 2021, 6 a.m. 37.2 ppb (36) 9.7 ppb (10) N/A 28.0 ppb (27) N/A N/A 0.0 ppb (0) 0.72 ppb (8) N/A 15.1 μg/m3 (58) 58.0
 
Feb. 13, 2021, 5 a.m. 21.3 ppb (21) 1.9 ppb (2) N/A 19.0 ppb (18) N/A N/A 6.0 ppb (6) 0.46 ppb (6) N/A 15.8 μg/m3 (59) 59.0
 
Feb. 13, 2021, 4 a.m. 10.3 ppb (10) 0.4 ppb (1) N/A 10.0 ppb (10) N/A N/A 19.0 ppb (18) 0.23 ppb (3) N/A 8.0 μg/m3 (34) 34.0
 
Feb. 13, 2021, 3 a.m. 11.7 ppb (12) 0.2 ppb (1) N/A 12.0 ppb (12) N/A N/A 20.0 ppb (19) 0.21 ppb (3) N/A 7.6 μg/m3 (32) 32.0
 
Feb. 13, 2021, 2 a.m. 11.3 ppb (11) 0.3 ppb (1) N/A 11.0 ppb (11) N/A N/A 21.0 ppb (20) 0.21 ppb (3) N/A 5.2 μg/m3 (22) 22.0
 
Feb. 13, 2021, 1 a.m. 8.9 ppb (9) 0.3 ppb (1) N/A 9.0 ppb (9) N/A N/A 25.0 ppb (24) 0.18 ppb (3) N/A 5.4 μg/m3 (23) 24.0
 
Feb. 13, 2021, midnight 5.8 ppb (6) 0.6 ppb (1) N/A 5.0 ppb (5) N/A N/A 30.0 ppb (28) 0.15 ppb (2) N/A 5.4 μg/m3 (23) 28.0
 
Feb. 12, 2021, 11 p.m. 4.8 ppb (5) 0.8 ppb (1) N/A 4.0 ppb (4) N/A N/A 32.0 ppb (30) 0.12 ppb (2) N/A 6.1 μg/m3 (26) 30.0
 
Feb. 12, 2021, 10 p.m. 4.8 ppb (5) 1.0 ppb (1) N/A 4.0 ppb (4) N/A N/A 32.0 ppb (30) 0.12 ppb (2) N/A 6.1 μg/m3 (26) 30.0
 
Feb. 12, 2021, 9 p.m. 5.9 ppb (6) 1.4 ppb (2) N/A 5.0 ppb (5) N/A N/A 31.0 ppb (29) 0.11 ppb (2) N/A 3.9 μg/m3 (17) 29.0
 
Feb. 12, 2021, 8 p.m. 5.4 ppb (6) 1.2 ppb (2) N/A 4.0 ppb (4) N/A N/A 32.0 ppb (30) 0.12 ppb (2) N/A 7.3 μg/m3 (31) 31.0
 
Feb. 12, 2021, 7 p.m. 6.0 ppb (6) 1.6 ppb (2) N/A 4.0 ppb (4) N/A N/A 32.0 ppb (30) 0.14 ppb (2) N/A 2.9 μg/m3 (13) 30.0
 
Feb. 12, 2021, 6 p.m. 6.2 ppb (6) 1.5 ppb (2) N/A 5.0 ppb (5) N/A N/A 32.0 ppb (30) 0.13 ppb (2) N/A 3.9 μg/m3 (17) 30.0
 
Feb. 12, 2021, 5 p.m. 11.2 ppb (11) 3.2 ppb (4) N/A 8.0 ppb (8) N/A N/A 24.0 ppb (23) 0.18 ppb (3) N/A 4.2 μg/m3 (18) 23.0
 
Feb. 12, 2021, 4 p.m. 11.1 ppb (11) 1.7 ppb (2) N/A 9.0 ppb (9) N/A N/A 19.0 ppb (18) 0.17 ppb (3) N/A 2.9 μg/m3 (13) 18.0
 
Feb. 12, 2021, 3 p.m. 15.3 ppb (15) 1.0 ppb (1) N/A 14.0 ppb (14) N/A N/A 15.0 ppb (14) 0.19 ppb (3) N/A 5.9 μg/m3 (25) 25.0
 
Feb. 12, 2021, 2 p.m. 15.5 ppb (15) 0.4 ppb (1) N/A 15.0 ppb (15) N/A N/A 15.0 ppb (14) 0.18 ppb (3) N/A 8.3 μg/m3 (35) 35.0
 
Feb. 12, 2021, 1 p.m. 13.0 ppb (13) 0.3 ppb (1) N/A 13.0 ppb (13) N/A N/A 16.0 ppb (15) 0.18 ppb (3) N/A 10.0 μg/m3 (42) 42.0
 
Feb. 12, 2021, noon 9.9 ppb (10) 0.3 ppb (1) N/A 10.0 ppb (10) N/A N/A 20.0 ppb (19) 0.15 ppb (2) N/A 10.5 μg/m3 (44) 44.0
 
Feb. 12, 2021, 11 a.m. 12.0 ppb (12) 0.3 ppb (1) N/A 12.0 ppb (12) N/A N/A 18.0 ppb (17) 0.19 ppb (3) N/A 12.9 μg/m3 (53) 53.0
 
Feb. 12, 2021, 10 a.m. 13.6 ppb (13) 0.4 ppb (1) N/A 13.0 ppb (13) N/A N/A 18.0 ppb (17) 0.19 ppb (3) N/A 15.3 μg/m3 (58) 58.0
 
Feb. 12, 2021, 9 a.m. 13.2 ppb (13) 0.2 ppb (1) N/A 13.0 ppb (13) N/A N/A 19.0 ppb (18) 0.2 ppb (3) N/A 17.0 μg/m3 (62) 62.0
 
Feb. 12, 2021, 8 a.m. 14.4 ppb (14) 0.5 ppb (1) N/A 14.0 ppb (14) N/A N/A 18.0 ppb (17) 0.23 ppb (3) N/A 13.6 μg/m3 (55) 55.0
 
Feb. 12, 2021, 7 a.m. 21.6 ppb (21) 1.1 ppb (2) N/A 21.0 ppb (20) N/A N/A 9.0 ppb (9) 0.33 ppb (4) N/A 13.4 μg/m3 (54) 54.0
 
Feb. 12, 2021, 6 a.m. 17.4 ppb (17) 0.7 ppb (1) N/A 17.0 ppb (17) N/A N/A 15.0 ppb (14) 0.27 ppb (4) N/A 18.3 μg/m3 (65) 65.0
 
Feb. 12, 2021, 5 a.m. 12.9 ppb (13) 0.3 ppb (1) N/A 13.0 ppb (13) N/A N/A 20.0 ppb (19) 0.24 ppb (3) N/A 15.1 μg/m3 (58) 58.0
 
Feb. 12, 2021, 4 a.m. 10.3 ppb (10) 0.1 ppb (1) N/A 10.0 ppb (10) N/A N/A 23.0 ppb (22) 0.19 ppb (3) N/A 9.8 μg/m3 (41) 41.0
 
Feb. 12, 2021, 3 a.m. 8.5 ppb (9) 0.0 ppb (0) N/A 9.0 ppb (9) N/A N/A 28.0 ppb (26) 0.18 ppb (3) N/A 7.1 μg/m3 (30) 30.0
 
Feb. 12, 2021, 2 a.m. 7.7 ppb (8) 0.1 ppb (1) N/A 8.0 ppb (8) N/A N/A 33.0 ppb (31) 0.19 ppb (3) N/A 10.0 μg/m3 (42) 42.0
 
Feb. 12, 2021, 1 a.m. 7.8 ppb (8) 0.1 ppb (1) N/A 8.0 ppb (8) N/A N/A 33.0 ppb (31) 0.19 ppb (3) N/A 10.5 μg/m3 (44) 44.0
 
Feb. 12, 2021, midnight 7.4 ppb (7) 0.4 ppb (1) N/A 7.0 ppb (7) N/A N/A 35.0 ppb (33) 0.18 ppb (3) N/A 8.6 μg/m3 (36) 36.0
 
Feb. 11, 2021, 11 p.m. 7.7 ppb (8) 0.7 ppb (1) N/A 7.0 ppb (7) N/A N/A 39.0 ppb (37) 0.19 ppb (3) N/A 14.6 μg/m3 (57) 57.0
 
Feb. 11, 2021, 10 p.m. 20.9 ppb (20) 3.6 ppb (4) N/A 17.0 ppb (17) N/A N/A 37.0 ppb (35) 0.34 ppb (4) N/A 24.3 μg/m3 (77) 77.0
 
Feb. 11, 2021, 9 p.m. 23.7 ppb (23) 4.6 ppb (5) N/A 19.0 ppb (18) N/A N/A 35.0 ppb (33) 0.37 ppb (5) N/A 25.0 μg/m3 (79) 79.0
 
Feb. 11, 2021, 8 p.m. 31.2 ppb (30) 6.5 ppb (7) N/A 25.0 ppb (24) N/A N/A 34.0 ppb (32) 0.42 ppb (5) N/A 25.9 μg/m3 (81) 81.0
 
Feb. 11, 2021, 7 p.m. 35.7 ppb (34) 8.9 ppb (9) N/A 27.0 ppb (26) N/A N/A 29.0 ppb (27) 0.46 ppb (6) N/A 29.1 μg/m3 (87) 87.0
 
Feb. 11, 2021, 6 p.m. 41.9 ppb (40) 12.7 ppb (12) N/A 29.0 ppb (28) N/A N/A 22.0 ppb (21) 0.56 ppb (7) N/A 29.9 μg/m3 (89) 89.0
 
Feb. 11, 2021, 5 p.m. 74.2 ppb (73) 36.8 ppb (35) N/A 38.0 ppb (36) N/A N/A 9.0 ppb (9) 0.91 ppb (11) N/A 37.9 μg/m3 (107) 107.0
 
Feb. 11, 2021, 4 p.m. 104.0 ppb (102) 67.7 ppb (66) N/A 37.0 ppb (35) N/A N/A 2.0 ppb (2) 1.03 ppb (12) N/A 32.8 μg/m3 (95) 102.0
 
Feb. 11, 2021, 3 p.m. 168.6 ppb (114) 138.9 ppb (109) N/A 30.0 ppb (29) N/A N/A 0.0 ppb (0) 2.01 ppb (23) N/A 28.5 μg/m3 (86) 114.0
 
Feb. 11, 2021, 2 p.m. 136.1 ppb (108) 111.7 ppb (104) N/A 25.0 ppb (24) N/A N/A 0.0 ppb (0) 1.7 ppb (20) N/A 24.6 μg/m3 (78) 108.0
 
Feb. 11, 2021, 1 p.m. 114.0 ppb (104) 87.8 ppb (88) N/A 26.0 ppb (25) N/A N/A 0.0 ppb (0) 1.36 ppb (16) N/A 21.4 μg/m3 (71) 104.0
 
Feb. 11, 2021, noon 103.5 ppb (102) 78.1 ppb (77) N/A 26.0 ppb (25) N/A N/A 0.0 ppb (0) 1.34 ppb (15) N/A 21.4 μg/m3 (71) 102.0
 
Feb. 11, 2021, 11 a.m. 92.0 ppb (92) 65.2 ppb (63) N/A 27.0 ppb (26) N/A N/A 0.0 ppb (0) 1.36 ppb (16) N/A 24.4 μg/m3 (77) 92.0
 
Feb. 11, 2021, 10 a.m. 90.0 ppb (90) 64.5 ppb (63) N/A 26.0 ppb (25) N/A N/A 0.0 ppb (0) 1.67 ppb (20) N/A 24.9 μg/m3 (78) 90.0
 
Feb. 11, 2021, 9 a.m. 85.3 ppb (85) 59.2 ppb (57) N/A 26.0 ppb (25) N/A N/A 0.0 ppb (0) 1.74 ppb (20) N/A 21.9 μg/m3 (72) 85.0
 
Feb. 11, 2021, 8 a.m. 79.4 ppb (79) 49.0 ppb (47) N/A 31.0 ppb (30) N/A N/A 0.0 ppb (0) 1.41 ppb (16) N/A 27.4 μg/m3 (84) 84.0
 
Feb. 11, 2021, 7 a.m. 68.4 ppb (67) 36.4 ppb (35) N/A 32.0 ppb (31) N/A N/A 0.0 ppb (0) 1.5 ppb (18) N/A 26.1 μg/m3 (81) 81.0
 
Feb. 11, 2021, 6 a.m. 53.4 ppb (51) 21.9 ppb (21) N/A 32.0 ppb (31) N/A N/A 0.0 ppb (0) 1.08 ppb (13) N/A 19.3 μg/m3 (67) 67.0
 
Feb. 11, 2021, 5 a.m. 40.8 ppb (39) 7.0 ppb (7) N/A 34.0 ppb (33) N/A N/A 1.0 ppb (1) 0.88 ppb (11) N/A 18.3 μg/m3 (65) 65.0
 
Feb. 11, 2021, 4 a.m. 23.2 ppb (22) 0.9 ppb (1) N/A 22.0 ppb (21) N/A N/A 12.0 ppb (12) 0.47 ppb (6) N/A 16.3 μg/m3 (60) 60.0
 
Feb. 11, 2021, 3 a.m. 12.0 ppb (12) 0.2 ppb (1) N/A 12.0 ppb (12) N/A N/A 25.0 ppb (24) 0.26 ppb (4) N/A 8.8 μg/m3 (37) 37.0
 
Feb. 11, 2021, 2 a.m. 8.2 ppb (8) 0.1 ppb (1) N/A 8.0 ppb (8) N/A N/A 32.0 ppb (30) 0.2 ppb (3) N/A 12.7 μg/m3 (53) 53.0
 
Feb. 11, 2021, 1 a.m. 8.0 ppb (8) 0.0 ppb (0) N/A 8.0 ppb (8) N/A N/A 34.0 ppb (32) 0.18 ppb (3) N/A 9.8 μg/m3 (41) 41.0
 
Feb. 11, 2021, midnight 6.4 ppb (7) 0.2 ppb (1) N/A 6.0 ppb (6) N/A N/A 37.0 ppb (35) 0.17 ppb (3) N/A 11.8 μg/m3 (50) 50.0
 
Feb. 10, 2021, 11 p.m. 7.2 ppb (7) 0.6 ppb (1) N/A 7.0 ppb (7) N/A N/A 41.0 ppb (38) 0.19 ppb (3) N/A 12.7 μg/m3 (53) 53.0
 
Feb. 10, 2021, 10 p.m. 7.2 ppb (7) 0.7 ppb (1) N/A 7.0 ppb (7) N/A N/A 42.0 ppb (39) 0.18 ppb (3) N/A 13.4 μg/m3 (54) 54.0
 
Feb. 10, 2021, 9 p.m. 8.3 ppb (8) 1.1 ppb (2) N/A 7.0 ppb (7) N/A N/A 40.0 ppb (38) 0.19 ppb (3) N/A 12.2 μg/m3 (52) 52.0
 
Feb. 10, 2021, 8 p.m. 9.8 ppb (10) 1.2 ppb (2) N/A 9.0 ppb (9) N/A N/A 37.0 ppb (35) 0.21 ppb (3) N/A 15.6 μg/m3 (59) 59.0
 
Feb. 10, 2021, 7 p.m. 11.9 ppb (12) 1.5 ppb (2) N/A 10.0 ppb (10) N/A N/A 33.0 ppb (31) 0.22 ppb (3) N/A 17.3 μg/m3 (62) 62.0
 
Feb. 10, 2021, 6 p.m. 16.3 ppb (16) 1.9 ppb (2) N/A 14.0 ppb (14) N/A N/A 29.0 ppb (27) 0.29 ppb (4) N/A 20.6 μg/m3 (69) 69.0
 
Feb. 10, 2021, 5 p.m. 28.0 ppb (27) 8.1 ppb (8) N/A 20.0 ppb (19) N/A N/A 25.0 ppb (24) 0.3 ppb (4) N/A 15.1 μg/m3 (58) 58.0
 
Feb. 10, 2021, 4 p.m. 75.3 ppb (74) 38.4 ppb (37) N/A 37.0 ppb (35) N/A N/A 4.0 ppb (4) 0.76 ppb (10) N/A 18.3 μg/m3 (65) 74.0
 
Feb. 10, 2021, 3 p.m. 85.3 ppb (85) 54.2 ppb (52) N/A 31.0 ppb (30) N/A N/A 0.0 ppb (0) 1.43 ppb (16) N/A 22.2 μg/m3 (73) 85.0
 
Feb. 10, 2021, 2 p.m. 64.0 ppb (62) 32.8 ppb (31) N/A 31.0 ppb (30) N/A N/A 0.0 ppb (0) 1.18 ppb (14) N/A 24.7 μg/m3 (78) 78.0
 
Feb. 10, 2021, 1 p.m. 47.2 ppb (45) 16.3 ppb (16) N/A 31.0 ppb (30) N/A N/A 0.0 ppb (0) 0.62 ppb (7) N/A 11.7 μg/m3 (49) 49.0
 
Feb. 10, 2021, noon 43.0 ppb (41) 10.2 ppb (10) N/A 33.0 ppb (32) N/A N/A 0.0 ppb (0) 0.4 ppb (5) N/A 14.3 μg/m3 (56) 56.0
 
Feb. 10, 2021, 11 a.m. 34.4 ppb (33) 2.6 ppb (3) N/A 32.0 ppb (31) N/A N/A 2.0 ppb (2) 0.38 ppb (5) N/A 16.6 μg/m3 (61) 61.0
 
Feb. 10, 2021, 10 a.m. 35.5 ppb (34) 1.4 ppb (2) N/A 34.0 ppb (33) N/A N/A 5.0 ppb (5) 0.31 ppb (4) N/A 13.1 μg/m3 (54) 54.0
 
Feb. 10, 2021, 9 a.m. 44.4 ppb (42) 5.8 ppb (6) N/A 39.0 ppb (37) N/A N/A 2.0 ppb (2) 0.53 ppb (6) N/A 13.4 μg/m3 (54) 54.0
 
Feb. 10, 2021, 8 a.m. 43.9 ppb (42) 12.0 ppb (12) N/A 32.0 ppb (31) N/A N/A 0.0 ppb (0) 0.76 ppb (10) N/A 19.5 μg/m3 (67) 67.0
 
Feb. 10, 2021, 7 a.m. 27.1 ppb (26) 1.3 ppb (2) N/A 26.0 ppb (25) N/A N/A 7.0 ppb (7) 0.51 ppb (6) N/A 19.5 μg/m3 (67) 67.0
 
Feb. 10, 2021, 6 a.m. 27.3 ppb (26) 1.2 ppb (2) N/A 26.0 ppb (25) N/A N/A 9.0 ppb (9) 0.47 ppb (6) N/A 16.3 μg/m3 (60) 60.0
 
Feb. 10, 2021, 5 a.m. 13.6 ppb (13) 0.2 ppb (1) N/A 13.0 ppb (13) N/A N/A 24.0 ppb (23) 0.28 ppb (4) N/A 13.4 μg/m3 (54) 54.0
 
Feb. 10, 2021, 4 a.m. 13.5 ppb (13) 0.2 ppb (1) N/A 13.0 ppb (13) N/A N/A 26.0 ppb (25) 0.35 ppb (4) N/A 11.5 μg/m3 (48) 48.0
 
Feb. 10, 2021, 3 a.m. 8.5 ppb (9) 0.1 ppb (1) N/A 8.0 ppb (8) N/A N/A 30.0 ppb (28) 0.2 ppb (3) N/A 10.0 μg/m3 (42) 42.0
 
Feb. 10, 2021, 2 a.m. 6.9 ppb (7) 0.0 ppb (0) N/A 7.0 ppb (7) N/A N/A 31.0 ppb (29) 0.17 ppb (3) N/A 9.6 μg/m3 (40) 40.0
 
Feb. 10, 2021, 1 a.m. 11.2 ppb (11) 0.2 ppb (1) N/A 11.0 ppb (11) N/A N/A 28.0 ppb (26) 0.23 ppb (3) N/A 10.0 μg/m3 (42) 42.0
 
Feb. 10, 2021, midnight 9.4 ppb (9) 0.4 ppb (1) N/A 9.0 ppb (9) N/A N/A 30.0 ppb (28) 0.17 ppb (3) N/A 11.8 μg/m3 (50) 50.0
 
Feb. 9, 2021, 11 p.m. 18.2 ppb (18) 2.8 ppb (3) N/A 16.0 ppb (16) N/A N/A 27.0 ppb (25) 0.17 ppb (3) N/A 10.0 μg/m3 (42) 42.0
 
Feb. 9, 2021, 10 p.m. 16.6 ppb (16) 2.4 ppb (3) N/A 14.0 ppb (14) N/A N/A 28.0 ppb (26) 0.19 ppb (3) N/A 10.8 μg/m3 (46) 46.0
 
Feb. 9, 2021, 9 p.m. 10.9 ppb (11) 2.0 ppb (2) N/A 9.0 ppb (9) N/A N/A 32.0 ppb (30) 0.19 ppb (3) N/A 11.7 μg/m3 (49) 49.0
 
Feb. 9, 2021, 8 p.m. 14.5 ppb (14) 2.9 ppb (3) N/A 12.0 ppb (12) N/A N/A 28.0 ppb (26) 0.23 ppb (3) N/A 11.0 μg/m3 (46) 46.0
 
Feb. 9, 2021, 7 p.m. 15.2 ppb (15) 1.8 ppb (2) N/A 13.0 ppb (13) N/A N/A 25.0 ppb (24) 0.25 ppb (3) N/A 15.3 μg/m3 (58) 58.0
 
Feb. 9, 2021, 6 p.m. 15.1 ppb (15) 1.7 ppb (2) N/A 13.0 ppb (13) N/A N/A 27.0 ppb (25) 0.21 ppb (3) N/A 11.8 μg/m3 (50) 50.0
 
Feb. 9, 2021, 5 p.m. 15.7 ppb (15) 1.0 ppb (1) N/A 15.0 ppb (15) N/A N/A 25.0 ppb (24) 0.23 ppb (3) N/A 14.8 μg/m3 (57) 57.0
 
Feb. 9, 2021, 4 p.m. 17.9 ppb (17) 1.7 ppb (2) N/A 16.0 ppb (16) N/A N/A 23.0 ppb (22) 0.29 ppb (4) N/A 10.5 μg/m3 (44) 44.0
 
Feb. 9, 2021, 3 p.m. 17.3 ppb (17) 0.7 ppb (1) N/A 17.0 ppb (17) N/A N/A 22.0 ppb (21) 0.27 ppb (4) N/A 10.2 μg/m3 (43) 43.0
 
Feb. 9, 2021, 2 p.m. 17.6 ppb (17) 0.3 ppb (1) N/A 17.0 ppb (17) N/A N/A 21.0 ppb (20) 0.27 ppb (4) N/A 13.2 μg/m3 (54) 54.0
 
Feb. 9, 2021, 1 p.m. 15.5 ppb (15) 0.3 ppb (1) N/A 15.0 ppb (15) N/A N/A 22.0 ppb (21) 0.25 ppb (3) N/A 12.0 μg/m3 (50) 50.0