AQSQID: 060376012

Site Name: Santa Clarita

Location: Newhall (Newhall), CA

Reporting: True, Located: True

Current AQI: 22.0

Newhall (Newhall) CA, US: 34.3833, -118.5283

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
Jan. 23, 2020, 2 a.m. 9.5 ppb (9) 0.5 ppb (0) N/A 9.0 ppb (8) N/A N/A 29.0 ppb (22) 0.2 ppb (2) N/A 3.9 μg/m3 (16) 22.0
 
Jan. 23, 2020, 1 a.m. 9.0 ppb (8) 1.0 ppb (1) N/A 8.0 ppb (7) N/A N/A 32.0 ppb (25) 0.19 ppb (2) N/A 2.2 μg/m3 (9) 25.0
 
Jan. 23, 2020, midnight 7.9 ppb (7) 1.5 ppb (1) N/A 6.0 ppb (6) N/A N/A 35.0 ppb (27) 0.17 ppb (2) N/A 3.0 μg/m3 (12) 27.0
 
Jan. 22, 2020, 11 p.m. 5.8 ppb (5) 1.1 ppb (1) N/A 5.0 ppb (5) N/A N/A 38.0 ppb (29) 0.15 ppb (2) N/A 3.5 μg/m3 (15) 29.0
 
Jan. 22, 2020, 10 p.m. 11.8 ppb (11) 2.9 ppb (3) N/A 9.0 ppb (8) N/A N/A 35.0 ppb (27) 0.21 ppb (2) N/A 1.3 μg/m3 (5) 27.0
 
Jan. 22, 2020, 9 p.m. 7.0 ppb (6) 1.8 ppb (2) N/A 5.0 ppb (5) N/A N/A 37.0 ppb (28) 0.14 ppb (2) N/A 1.6 μg/m3 (7) 28.0
 
Jan. 22, 2020, 8 p.m. 10.2 ppb (9) 3.0 ppb (3) N/A 7.0 ppb (6) N/A N/A 34.0 ppb (26) 0.18 ppb (2) N/A -0.3 μg/m3 (0) 26.0
 
Jan. 22, 2020, 7 p.m. 11.2 ppb (10) 3.5 ppb (3) N/A 8.0 ppb (7) N/A N/A 32.0 ppb (25) 0.18 ppb (2) N/A N/A 25.0
 
Jan. 22, 2020, 6 p.m. 11.6 ppb (11) 4.0 ppb (4) N/A 8.0 ppb (7) N/A N/A 30.0 ppb (23) 0.19 ppb (2) N/A N/A 23.0
 
Jan. 22, 2020, 5 p.m. 27.1 ppb (25) 13.1 ppb (12) N/A 14.0 ppb (13) N/A N/A 14.0 ppb (11) 0.35 ppb (4) N/A 7.4 μg/m3 (31) 31.0
 
Jan. 22, 2020, 4 p.m. 53.5 ppb (50) 39.3 ppb (36) N/A 14.0 ppb (13) N/A N/A 5.0 ppb (4) 0.64 ppb (7) N/A 6.9 μg/m3 (29) 50.0
 
Jan. 22, 2020, 3 p.m. 79.6 ppb (77) 67.9 ppb (65) N/A 12.0 ppb (11) N/A N/A 1.0 ppb (1) 0.72 ppb (8) N/A 6.0 μg/m3 (25) 77.0
 
Jan. 22, 2020, 2 p.m. 39.7 ppb (37) 30.6 ppb (28) N/A 9.0 ppb (8) N/A N/A 1.0 ppb (1) 0.38 ppb (4) N/A 7.7 μg/m3 (32) 37.0
 
Jan. 22, 2020, 1 p.m. 18.4 ppb (17) 9.6 ppb (9) N/A 9.0 ppb (8) N/A N/A 1.0 ppb (1) 0.25 ppb (3) N/A 3.6 μg/m3 (15) 17.0
 
Jan. 22, 2020, noon 16.2 ppb (15) 7.7 ppb (7) N/A 9.0 ppb (8) N/A N/A 1.0 ppb (1) 0.24 ppb (3) N/A 1.9 μg/m3 (8) 15.0
 
Jan. 22, 2020, 11 a.m. 12.7 ppb (12) 4.3 ppb (4) N/A 9.0 ppb (8) N/A N/A 1.0 ppb (1) 0.2 ppb (2) N/A 4.0 μg/m3 (17) 17.0
 
Jan. 22, 2020, 10 a.m. 10.2 ppb (9) 2.0 ppb (2) N/A 8.0 ppb (7) N/A N/A 2.0 ppb (2) 0.23 ppb (3) N/A 3.8 μg/m3 (16) 16.0
 
Jan. 22, 2020, 9 a.m. 8.5 ppb (8) 0.7 ppb (1) N/A 8.0 ppb (7) N/A N/A 4.0 ppb (3) 0.22 ppb (2) N/A 4.7 μg/m3 (20) 20.0
 
Jan. 22, 2020, 8 a.m. 8.0 ppb (7) 0.5 ppb (0) N/A 8.0 ppb (7) N/A N/A 6.0 ppb (5) 0.24 ppb (3) N/A 6.2 μg/m3 (26) 26.0
 
Jan. 22, 2020, 7 a.m. 11.3 ppb (10) 0.5 ppb (0) N/A 11.0 ppb (10) N/A N/A 8.0 ppb (6) 0.25 ppb (3) N/A 7.7 μg/m3 (32) 32.0
 
Jan. 22, 2020, 6 a.m. 12.5 ppb (12) 1.2 ppb (1) N/A 11.0 ppb (10) N/A N/A 11.0 ppb (8) 0.26 ppb (3) N/A 5.0 μg/m3 (21) 21.0
 
Jan. 22, 2020, 5 a.m. 6.3 ppb (6) 0.2 ppb (0) N/A 6.0 ppb (6) N/A N/A 25.0 ppb (19) 0.19 ppb (2) N/A 3.5 μg/m3 (15) 19.0
 
Jan. 22, 2020, 4 a.m. 8.3 ppb (8) 0.5 ppb (0) N/A 8.0 ppb (7) N/A N/A 27.0 ppb (21) 0.18 ppb (2) N/A 5.2 μg/m3 (22) 22.0
 
Jan. 22, 2020, 3 a.m. 6.4 ppb (6) 0.3 ppb (0) N/A 6.0 ppb (6) N/A N/A 31.0 ppb (24) 0.16 ppb (2) N/A 2.5 μg/m3 (10) 24.0
 
Jan. 22, 2020, 2 a.m. 7.4 ppb (7) 0.6 ppb (1) N/A 7.0 ppb (6) N/A N/A 33.0 ppb (25) 0.18 ppb (2) N/A 3.2 μg/m3 (13) 25.0
 
Jan. 22, 2020, 1 a.m. 7.9 ppb (7) 0.3 ppb (0) N/A 8.0 ppb (7) N/A N/A 36.0 ppb (28) 0.17 ppb (2) N/A 5.4 μg/m3 (23) 28.0
 
Jan. 22, 2020, midnight 10.5 ppb (10) 0.7 ppb (1) N/A 10.0 ppb (9) N/A N/A 36.0 ppb (28) 0.2 ppb (2) N/A 3.5 μg/m3 (15) 28.0
 
Jan. 21, 2020, 11 p.m. 7.3 ppb (7) 0.7 ppb (1) N/A 7.0 ppb (6) N/A N/A 40.0 ppb (31) 0.17 ppb (2) N/A -0.3 μg/m3 (0) 31.0
 
Jan. 21, 2020, 10 p.m. 6.0 ppb (6) 0.6 ppb (1) N/A 5.0 ppb (5) N/A N/A 41.0 ppb (32) 0.15 ppb (2) N/A 2.2 μg/m3 (9) 32.0
 
Jan. 21, 2020, 9 p.m. 7.1 ppb (7) 1.0 ppb (1) N/A 6.0 ppb (6) N/A N/A 39.0 ppb (30) 0.16 ppb (2) N/A 3.7 μg/m3 (15) 30.0
 
Jan. 21, 2020, 8 p.m. 7.7 ppb (7) 1.1 ppb (1) N/A 7.0 ppb (6) N/A N/A 42.0 ppb (32) 0.16 ppb (2) N/A 1.1 μg/m3 (5) 32.0
 
Jan. 21, 2020, 7 p.m. 14.5 ppb (13) 3.9 ppb (4) N/A 11.0 ppb (10) N/A N/A 31.0 ppb (24) 0.21 ppb (2) N/A 3.5 μg/m3 (15) 24.0
 
Jan. 21, 2020, 6 p.m. 11.3 ppb (10) 2.8 ppb (3) N/A 9.0 ppb (8) N/A N/A 30.0 ppb (23) 0.2 ppb (2) N/A 7.4 μg/m3 (31) 31.0
 
Jan. 21, 2020, 5 p.m. 15.7 ppb (15) 4.6 ppb (4) N/A 11.0 ppb (10) N/A N/A 25.0 ppb (19) 0.25 ppb (3) N/A 6.4 μg/m3 (27) 27.0
 
Jan. 21, 2020, 4 p.m. 25.8 ppb (24) 11.2 ppb (10) N/A 15.0 ppb (14) N/A N/A 8.0 ppb (6) 0.36 ppb (4) N/A 4.5 μg/m3 (19) 24.0
 
Jan. 21, 2020, 3 p.m. 28.7 ppb (27) 12.0 ppb (11) N/A 17.0 ppb (16) N/A N/A 2.0 ppb (2) 0.38 ppb (4) N/A 5.4 μg/m3 (23) 27.0
 
Jan. 21, 2020, 2 p.m. 19.1 ppb (18) 5.0 ppb (5) N/A 14.0 ppb (13) N/A N/A 6.0 ppb (5) 0.3 ppb (3) N/A 5.7 μg/m3 (24) 24.0
 
Jan. 21, 2020, 1 p.m. 6.9 ppb (6) 0.4 ppb (0) N/A 7.0 ppb (6) N/A N/A 16.0 ppb (12) 0.17 ppb (2) N/A 4.5 μg/m3 (19) 19.0
 
Jan. 21, 2020, noon 5.6 ppb (5) 0.3 ppb (0) N/A 5.0 ppb (5) N/A N/A 20.0 ppb (15) 0.16 ppb (2) N/A 4.9 μg/m3 (20) 20.0
 
Jan. 21, 2020, 11 a.m. 4.7 ppb (4) 0.2 ppb (0) N/A 4.0 ppb (4) N/A N/A 26.0 ppb (20) 0.14 ppb (2) N/A 6.2 μg/m3 (26) 26.0
 
Jan. 21, 2020, 10 a.m. 4.5 ppb (4) 0.2 ppb (0) N/A 4.0 ppb (4) N/A N/A 27.0 ppb (21) 0.14 ppb (2) N/A 7.4 μg/m3 (31) 31.0
 
Jan. 21, 2020, 9 a.m. 10.0 ppb (9) 0.6 ppb (1) N/A 9.0 ppb (8) N/A N/A 26.0 ppb (20) 0.16 ppb (2) N/A 9.4 μg/m3 (39) 39.0
 
Jan. 21, 2020, 8 a.m. 15.2 ppb (14) 1.4 ppb (1) N/A 14.0 ppb (13) N/A N/A 18.0 ppb (14) 0.28 ppb (3) N/A 9.8 μg/m3 (41) 41.0
 
Jan. 21, 2020, 7 a.m. 10.5 ppb (10) 0.3 ppb (0) N/A 10.0 ppb (9) N/A N/A 24.0 ppb (18) 0.21 ppb (2) N/A 15.0 μg/m3 (56) 56.0
 
Jan. 21, 2020, 6 a.m. 11.4 ppb (11) 0.3 ppb (0) N/A 11.0 ppb (10) N/A N/A 28.0 ppb (22) 0.25 ppb (3) N/A 14.5 μg/m3 (55) 55.0
 
Jan. 21, 2020, 5 a.m. 19.0 ppb (18) 0.5 ppb (0) N/A 19.0 ppb (18) N/A N/A 21.0 ppb (16) 0.33 ppb (4) N/A 21.8 μg/m3 (71) 71.0
 
Jan. 21, 2020, 4 a.m. 18.6 ppb (17) 0.5 ppb (0) N/A 18.0 ppb (17) N/A N/A 19.0 ppb (15) 0.33 ppb (4) N/A 12.3 μg/m3 (51) 51.0
 
Jan. 21, 2020, 3 a.m. 18.5 ppb (17) 0.7 ppb (1) N/A 18.0 ppb (17) N/A N/A 23.0 ppb (18) 0.29 ppb (3) N/A 13.1 μg/m3 (52) 52.0
 
Jan. 21, 2020, 2 a.m. 30.4 ppb (28) 1.1 ppb (1) N/A 29.0 ppb (27) N/A N/A 17.0 ppb (13) 0.46 ppb (5) N/A 14.3 μg/m3 (55) 55.0
 
Jan. 21, 2020, 1 a.m. 29.5 ppb (27) 0.9 ppb (1) N/A 29.0 ppb (27) N/A N/A 21.0 ppb (16) 0.44 ppb (5) N/A 14.7 μg/m3 (56) 56.0
 
Jan. 21, 2020, midnight 27.5 ppb (25) 1.8 ppb (2) N/A 26.0 ppb (24) N/A N/A 26.0 ppb (20) 0.42 ppb (5) N/A 15.2 μg/m3 (57) 57.0
 
Jan. 20, 2020, 11 p.m. 27.8 ppb (26) 3.3 ppb (3) N/A 25.0 ppb (23) N/A N/A 29.0 ppb (22) 0.41 ppb (5) N/A 11.6 μg/m3 (48) 48.0
 
Jan. 20, 2020, 10 p.m. 26.3 ppb (24) 4.1 ppb (4) N/A 22.0 ppb (20) N/A N/A 31.0 ppb (24) 0.37 ppb (4) N/A 18.1 μg/m3 (63) 63.0
 
Jan. 20, 2020, 9 p.m. 24.0 ppb (22) 5.8 ppb (5) N/A 18.0 ppb (17) N/A N/A 33.0 ppb (25) 0.33 ppb (4) N/A 9.8 μg/m3 (41) 41.0
 
Jan. 20, 2020, 8 p.m. 26.6 ppb (25) 7.4 ppb (7) N/A 19.0 ppb (18) N/A N/A 26.0 ppb (20) 0.37 ppb (4) N/A 16.2 μg/m3 (59) 59.0
 
Jan. 20, 2020, 7 p.m. 30.6 ppb (28) 9.8 ppb (9) N/A 21.0 ppb (19) N/A N/A 20.0 ppb (15) 0.4 ppb (4) N/A 8.4 μg/m3 (35) 35.0
 
Jan. 20, 2020, 6 p.m. 50.4 ppb (47) 24.9 ppb (23) N/A 26.0 ppb (24) N/A N/A 7.0 ppb (5) 0.46 ppb (5) N/A 4.7 μg/m3 (20) 47.0
 
Jan. 20, 2020, 5 p.m. 44.3 ppb (41) 22.7 ppb (21) N/A 22.0 ppb (20) N/A N/A 7.0 ppb (5) 0.49 ppb (5) N/A 3.3 μg/m3 (14) 41.0
 
Jan. 20, 2020, 4 p.m. 36.4 ppb (34) 14.9 ppb (14) N/A 22.0 ppb (20) N/A N/A 4.0 ppb (3) 0.49 ppb (5) N/A 1.4 μg/m3 (6) 34.0
 
Jan. 20, 2020, 3 p.m. 49.4 ppb (46) 24.7 ppb (23) N/A 25.0 ppb (23) N/A N/A 2.0 ppb (2) 0.53 ppb (6) N/A 0.4 μg/m3 (2) 46.0
 
Jan. 20, 2020, 2 p.m. 23.3 ppb (22) 2.9 ppb (3) N/A 20.0 ppb (19) N/A N/A 5.0 ppb (4) 0.29 ppb (3) N/A -0.8 μg/m3 (0) 22.0
 
Jan. 20, 2020, 1 p.m. 17.5 ppb (16) 2.7 ppb (3) N/A 15.0 ppb (14) N/A N/A 9.0 ppb (7) 0.24 ppb (3) N/A -2.2 μg/m3 (0) 16.0
 
Jan. 20, 2020, noon 10.1 ppb (9) 0.4 ppb (0) N/A 10.0 ppb (9) N/A N/A 14.0 ppb (11) 0.19 ppb (2) N/A -0.8 μg/m3 (0) 11.0
 
Jan. 20, 2020, 11 a.m. 6.9 ppb (6) 0.2 ppb (0) N/A 7.0 ppb (6) N/A N/A 17.0 ppb (13) 0.18 ppb (2) N/A -0.5 μg/m3 (0) 13.0
 
Jan. 20, 2020, 10 a.m. 8.2 ppb (8) 0.4 ppb (0) N/A 8.0 ppb (7) N/A N/A 16.0 ppb (12) 0.2 ppb (2) N/A 1.1 μg/m3 (5) 12.0
 
Jan. 20, 2020, 9 a.m. 7.9 ppb (7) 0.2 ppb (0) N/A 8.0 ppb (7) N/A N/A 18.0 ppb (14) 0.21 ppb (2) N/A 0.8 μg/m3 (3) 14.0
 
Jan. 20, 2020, 8 a.m. 9.4 ppb (9) 0.4 ppb (0) N/A 9.0 ppb (8) N/A N/A 17.0 ppb (13) 0.25 ppb (3) N/A 2.3 μg/m3 (10) 13.0
 
Jan. 20, 2020, 7 a.m. 10.4 ppb (10) 0.5 ppb (0) N/A 10.0 ppb (9) N/A N/A 16.0 ppb (12) 0.31 ppb (3) N/A 1.8 μg/m3 (8) 12.0
 
Jan. 20, 2020, 6 a.m. 12.8 ppb (12) 0.4 ppb (0) N/A 12.0 ppb (11) N/A N/A 15.0 ppb (12) 0.37 ppb (4) N/A 1.1 μg/m3 (5) 12.0
 
Jan. 20, 2020, 5 a.m. 10.6 ppb (10) 0.2 ppb (0) N/A 10.0 ppb (9) N/A N/A 23.0 ppb (18) 0.31 ppb (3) N/A 0.8 μg/m3 (3) 18.0
 
Jan. 20, 2020, 4 a.m. 3.7 ppb (3) 0.2 ppb (0) N/A 4.0 ppb (4) N/A N/A 36.0 ppb (28) 0.16 ppb (2) N/A 0.9 μg/m3 (4) 28.0
 
Jan. 20, 2020, 3 a.m. 4.3 ppb (4) 0.2 ppb (0) N/A 4.0 ppb (4) N/A N/A 37.0 ppb (28) 0.16 ppb (2) N/A 2.0 μg/m3 (8) 28.0
 
Jan. 20, 2020, 2 a.m. 4.0 ppb (4) 0.3 ppb (0) N/A 4.0 ppb (4) N/A N/A 37.0 ppb (28) 0.15 ppb (2) N/A -2.8 μg/m3 (0) 28.0
 
Jan. 20, 2020, 1 a.m. 3.2 ppb (3) 0.2 ppb (0) N/A 3.0 ppb (3) N/A N/A 38.0 ppb (29) 0.15 ppb (2) N/A -4.9 μg/m3 (0) 29.0
 
Jan. 20, 2020, midnight 3.1 ppb (3) 0.3 ppb (0) N/A 3.0 ppb (3) N/A N/A 38.0 ppb (29) 0.15 ppb (2) N/A -3.0 μg/m3 (0) 29.0
 
Jan. 19, 2020, 11 p.m. 3.3 ppb (3) 0.4 ppb (0) N/A 3.0 ppb (3) N/A N/A 38.0 ppb (29) 0.13 ppb (1) N/A -2.3 μg/m3 (0) 29.0
 
Jan. 19, 2020, 10 p.m. 2.8 ppb (3) 0.4 ppb (0) N/A 2.0 ppb (2) N/A N/A 39.0 ppb (30) 0.13 ppb (1) N/A -3.7 μg/m3 (0) 30.0
 
Jan. 19, 2020, 9 p.m. 2.4 ppb (2) 0.3 ppb (0) N/A 2.0 ppb (2) N/A N/A 41.0 ppb (32) 0.13 ppb (1) N/A -3.0 μg/m3 (0) 32.0
 
Jan. 19, 2020, 8 p.m. 2.1 ppb (2) 0.4 ppb (0) N/A 2.0 ppb (2) N/A N/A 43.0 ppb (33) 0.11 ppb (1) N/A -0.8 μg/m3 (0) 33.0
 
Jan. 19, 2020, 7 p.m. 2.3 ppb (2) 0.6 ppb (1) N/A 2.0 ppb (2) N/A N/A 42.0 ppb (32) 0.15 ppb (2) N/A -0.8 μg/m3 (0) 32.0
 
Jan. 19, 2020, 6 p.m. 2.0 ppb (2) 0.5 ppb (0) N/A 2.0 ppb (2) N/A N/A 42.0 ppb (32) 0.11 ppb (1) N/A 1.8 μg/m3 (8) 32.0
 
Jan. 19, 2020, 5 p.m. 2.2 ppb (2) 0.5 ppb (0) N/A 2.0 ppb (2) N/A N/A 41.0 ppb (32) 0.12 ppb (1) N/A -1.2 μg/m3 (0) 32.0
 
Jan. 19, 2020, 4 p.m. 5.6 ppb (5) 1.0 ppb (1) N/A 5.0 ppb (5) N/A N/A 36.0 ppb (28) 0.15 ppb (2) N/A -2.0 μg/m3 (0) 28.0
 
Jan. 19, 2020, 3 p.m. 5.3 ppb (5) 0.6 ppb (1) N/A 5.0 ppb (5) N/A N/A 35.0 ppb (27) 0.16 ppb (2) N/A 2.9 μg/m3 (12) 27.0
 
Jan. 19, 2020, 2 p.m. 3.2 ppb (3) 0.2 ppb (0) N/A 3.0 ppb (3) N/A N/A 38.0 ppb (29) 0.14 ppb (2) N/A 0.6 μg/m3 (2) 29.0
 
Jan. 19, 2020, 1 p.m. 3.0 ppb (3) 0.2 ppb (0) N/A 3.0 ppb (3) N/A N/A 38.0 ppb (29) 0.13 ppb (1) N/A -1.2 μg/m3 (0) 29.0
 
Jan. 19, 2020, noon 3.0 ppb (3) 0.2 ppb (0) N/A 3.0 ppb (3) N/A N/A 37.0 ppb (28) 0.13 ppb (1) N/A 2.1 μg/m3 (9) 28.0
 
Jan. 19, 2020, 11 a.m. 2.6 ppb (2) 0.1 ppb (0) N/A 3.0 ppb (3) N/A N/A 38.0 ppb (29) 0.13 ppb (1) N/A 2.4 μg/m3 (10) 29.0
 
Jan. 19, 2020, 10 a.m. 2.6 ppb (2) 0.1 ppb (0) N/A 2.0 ppb (2) N/A N/A 37.0 ppb (28) 0.13 ppb (1) N/A -0.5 μg/m3 (0) 28.0
 
Jan. 19, 2020, 9 a.m. 2.4 ppb (2) 0.1 ppb (0) N/A 2.0 ppb (2) N/A N/A 38.0 ppb (29) 0.13 ppb (1) N/A 0.0 μg/m3 (0) 29.0
 
Jan. 19, 2020, 8 a.m. 3.0 ppb (3) 0.3 ppb (0) N/A 3.0 ppb (3) N/A N/A 36.0 ppb (28) 0.14 ppb (2) N/A -2.0 μg/m3 (0) 28.0
 
Jan. 19, 2020, 7 a.m. 3.2 ppb (3) 0.1 ppb (0) N/A 3.0 ppb (3) N/A N/A 36.0 ppb (28) 0.15 ppb (2) N/A 0.4 μg/m3 (2) 28.0
 
Jan. 19, 2020, 6 a.m. 4.2 ppb (4) 0.3 ppb (0) N/A 4.0 ppb (4) N/A N/A 34.0 ppb (26) 0.17 ppb (2) N/A 7.2 μg/m3 (30) 30.0
 
Jan. 19, 2020, 5 a.m. 7.6 ppb (7) 0.4 ppb (0) N/A 7.0 ppb (6) N/A N/A 31.0 ppb (24) 0.21 ppb (2) N/A 8.9 μg/m3 (37) 37.0
 
Jan. 19, 2020, 4 a.m. 5.7 ppb (5) 0.4 ppb (0) N/A 5.0 ppb (5) N/A N/A 35.0 ppb (27) 0.19 ppb (2) N/A 5.7 μg/m3 (24) 27.0
 
Jan. 19, 2020, 3 a.m. 6.2 ppb (6) 0.3 ppb (0) N/A 6.0 ppb (6) N/A N/A 35.0 ppb (27) 0.2 ppb (2) N/A 4.7 μg/m3 (20) 27.0
 
Jan. 19, 2020, 2 a.m. 5.4 ppb (5) 0.4 ppb (0) N/A 5.0 ppb (5) N/A N/A 36.0 ppb (28) 0.18 ppb (2) N/A 3.2 μg/m3 (13) 28.0
 
Jan. 19, 2020, 1 a.m. 5.5 ppb (5) 0.8 ppb (1) N/A 5.0 ppb (5) N/A N/A 38.0 ppb (29) 0.17 ppb (2) N/A -0.5 μg/m3 (0) 29.0
 
Jan. 19, 2020, midnight 2.4 ppb (2) 0.4 ppb (0) N/A 2.0 ppb (2) N/A N/A 43.0 ppb (33) 0.14 ppb (2) N/A -4.7 μg/m3 (0) 33.0
 
Jan. 18, 2020, 11 p.m. 1.8 ppb (2) 0.3 ppb (0) N/A 2.0 ppb (2) N/A N/A 44.0 ppb (34) 0.13 ppb (1) N/A N/A 34.0
 
Jan. 18, 2020, 10 p.m. 2.0 ppb (2) 0.4 ppb (0) N/A 2.0 ppb (2) N/A N/A 44.0 ppb (34) 0.12 ppb (1) N/A -0.6 μg/m3 (0) 34.0
 
Jan. 18, 2020, 9 p.m. 1.9 ppb (2) 0.4 ppb (0) N/A 1.0 ppb (1) N/A N/A 46.0 ppb (35) 0.11 ppb (1) N/A 0.1 μg/m3 (0) 35.0
 
Jan. 18, 2020, 8 p.m. 2.1 ppb (2) 0.5 ppb (0) N/A 2.0 ppb (2) N/A N/A 46.0 ppb (35) 0.11 ppb (1) N/A -4.9 μg/m3 (0) 35.0
 
Jan. 18, 2020, 7 p.m. 2.1 ppb (2) 0.6 ppb (1) N/A 1.0 ppb (1) N/A N/A 45.0 ppb (35) 0.11 ppb (1) N/A -1.7 μg/m3 (0) 35.0
 
Jan. 18, 2020, 6 p.m. 1.8 ppb (2) 0.4 ppb (0) N/A 1.0 ppb (1) N/A N/A 44.0 ppb (34) 0.12 ppb (1) N/A 0.4 μg/m3 (2) 34.0
 
Jan. 18, 2020, 5 p.m. 6.5 ppb (6) 1.7 ppb (2) N/A 5.0 ppb (5) N/A N/A 38.0 ppb (29) 0.18 ppb (2) N/A -0.7 μg/m3 (0) 29.0
 
Jan. 18, 2020, 4 p.m. 16.3 ppb (15) 4.3 ppb (4) N/A 12.0 ppb (11) N/A N/A 28.0 ppb (22) 0.25 ppb (3) N/A -0.7 μg/m3 (0) 22.0
 
Jan. 18, 2020, 3 p.m. 21.6 ppb (20) 3.4 ppb (3) N/A 18.0 ppb (17) N/A N/A 18.0 ppb (14) 0.23 ppb (3) N/A 0.7 μg/m3 (3) 20.0
 
Jan. 18, 2020, 2 p.m. 18.5 ppb (17) 1.4 ppb (1) N/A 17.0 ppb (16) N/A N/A 18.0 ppb (14) 0.24 ppb (3) N/A 1.6 μg/m3 (7) 17.0
 
Jan. 18, 2020, 1 p.m. 12.8 ppb (12) 1.4 ppb (1) N/A 11.0 ppb (10) N/A N/A 23.0 ppb (18) 0.19 ppb (2) N/A 0.7 μg/m3 (3) 18.0
 
Jan. 18, 2020, noon 12.4 ppb (11) 0.7 ppb (1) N/A 12.0 ppb (11) N/A N/A 16.0 ppb (12) 0.23 ppb (3) N/A 3.6 μg/m3 (15) 15.0
 
Jan. 18, 2020, 11 a.m. 15.2 ppb (14) 0.6 ppb (1) N/A 15.0 ppb (14) N/A N/A 12.0 ppb (9) 0.2 ppb (2) N/A 4.1 μg/m3 (17) 17.0
 
Jan. 18, 2020, 10 a.m. 19.5 ppb (18) 2.9 ppb (3) N/A 17.0 ppb (16) N/A N/A 5.0 ppb (4) 0.24 ppb (3) N/A 3.6 μg/m3 (15) 18.0
 
Jan. 18, 2020, 9 a.m. 12.0 ppb (11) 0.5 ppb (0) N/A 11.0 ppb (10) N/A N/A 17.0 ppb (13) 0.25 ppb (3) N/A 4.5 μg/m3 (19) 19.0
 
Jan. 18, 2020, 8 a.m. 13.9 ppb (13) 0.8 ppb (1) N/A 13.0 ppb (12) N/A N/A 17.0 ppb (13) 0.3 ppb (3) N/A 7.4 μg/m3 (31) 31.0
 
Jan. 18, 2020, 7 a.m. 17.3 ppb (16) 1.5 ppb (1) N/A 16.0 ppb (15) N/A N/A 17.0 ppb (13) 0.35 ppb (4) N/A 9.6 μg/m3 (40) 40.0
 
Jan. 18, 2020, 6 a.m. 16.9 ppb (16) 1.2 ppb (1) N/A 16.0 ppb (15) N/A N/A 16.0 ppb (12) 0.43 ppb (5) N/A 11.6 μg/m3 (48) 48.0
 
Jan. 18, 2020, 5 a.m. 23.2 ppb (21) 2.1 ppb (2) N/A 21.0 ppb (19) N/A N/A 10.0 ppb (8) 0.51 ppb (6) N/A 11.1 μg/m3 (46) 46.0
 
Jan. 18, 2020, 4 a.m. 15.6 ppb (14) 0.5 ppb (0) N/A 15.0 ppb (14) N/A N/A 18.0 ppb (14) 0.33 ppb (4) N/A 6.7 μg/m3 (28) 28.0
 
Jan. 18, 2020, 3 a.m. 25.0 ppb (23) 2.8 ppb (3) N/A 22.0 ppb (20) N/A N/A 13.0 ppb (10) 0.4 ppb (4) N/A 3.7 μg/m3 (15) 23.0
 
Jan. 18, 2020, 2 a.m. 7.4 ppb (7) 0.7 ppb (1) N/A 7.0 ppb (6) N/A N/A 32.0 ppb (25) 0.21 ppb (2) N/A -0.6 μg/m3 (0) 25.0
 
Jan. 18, 2020, 1 a.m. 5.1 ppb (5) 0.6 ppb (1) N/A 5.0 ppb (5) N/A N/A 38.0 ppb (29) 0.18 ppb (2) N/A N/A 29.0
 
Jan. 18, 2020, midnight 2.8 ppb (3) 0.4 ppb (0) N/A 2.0 ppb (2) N/A N/A 44.0 ppb (34) 0.16 ppb (2) N/A -3.2 μg/m3 (0) 34.0
 
Jan. 17, 2020, 11 p.m. 2.3 ppb (2) 0.5 ppb (0) N/A 2.0 ppb (2) N/A N/A 45.0 ppb (35) 0.15 ppb (2) N/A -2.3 μg/m3 (0) 35.0
 
Jan. 17, 2020, 10 p.m. 2.6 ppb (2) 0.6 ppb (1) N/A 2.0 ppb (2) N/A N/A 46.0 ppb (35) 0.13 ppb (1) N/A -2.7 μg/m3 (0) 35.0
 
Jan. 17, 2020, 9 p.m. 2.5 ppb (2) 0.5 ppb (0) N/A 2.0 ppb (2) N/A N/A 45.0 ppb (35) 0.12 ppb (1) N/A -1.5 μg/m3 (0) 35.0
 
Jan. 17, 2020, 8 p.m. 3.8 ppb (4) 1.0 ppb (1) N/A 3.0 ppb (3) N/A N/A 41.0 ppb (32) 0.12 ppb (1) N/A N/A 32.0
 
Jan. 17, 2020, 7 p.m. 6.4 ppb (6) 1.7 ppb (2) N/A 5.0 ppb (5) N/A N/A 37.0 ppb (28) 0.15 ppb (2) N/A N/A 28.0
 
Jan. 17, 2020, 6 p.m. 13.1 ppb (12) 4.7 ppb (4) N/A 8.0 ppb (7) N/A N/A 30.0 ppb (23) 0.2 ppb (2) N/A 1.9 μg/m3 (8) 23.0
 
Jan. 17, 2020, 5 p.m. 17.8 ppb (16) 6.5 ppb (6) N/A 11.0 ppb (10) N/A N/A 21.0 ppb (16) 0.23 ppb (3) N/A 1.2 μg/m3 (5) 16.0
 
Jan. 17, 2020, 4 p.m. 30.7 ppb (28) 15.7 ppb (15) N/A 15.0 ppb (14) N/A N/A 9.0 ppb (7) 0.37 ppb (4) N/A 0.4 μg/m3 (2) 28.0
 
Jan. 17, 2020, 3 p.m. 38.7 ppb (36) 17.0 ppb (16) N/A 22.0 ppb (20) N/A N/A 3.0 ppb (2) 0.45 ppb (5) N/A 2.4 μg/m3 (10) 36.0
 
Jan. 17, 2020, 2 p.m. 18.3 ppb (17) 2.0 ppb (2) N/A 16.0 ppb (15) N/A N/A 7.0 ppb (5) 0.34 ppb (4) N/A 1.4 μg/m3 (6) 17.0
 
Jan. 17, 2020, 1 p.m. 10.6 ppb (10) 0.4 ppb (0) N/A 10.0 ppb (9) N/A N/A 21.0 ppb (16) 0.2 ppb (2) N/A 3.6 μg/m3 (15) 16.0
 
Jan. 17, 2020, noon 5.8 ppb (5) 0.3 ppb (0) N/A 6.0 ppb (6) N/A N/A 31.0 ppb (24) 0.16 ppb (2) N/A 3.9 μg/m3 (16) 24.0
 
Jan. 17, 2020, 11 a.m. 4.5 ppb (4) 0.2 ppb (0) N/A 4.0 ppb (4) N/A N/A 31.0 ppb (24) 0.14 ppb (2) N/A 1.9 μg/m3 (8) 24.0
 
Jan. 17, 2020, 10 a.m. 5.5 ppb (5) 0.2 ppb (0) N/A 5.0 ppb (5) N/A N/A 31.0 ppb (24) 0.17 ppb (2) N/A -4.2 μg/m3 (0) 24.0
 
Jan. 17, 2020, 9 a.m. 5.3 ppb (5) 0.2 ppb (0) N/A 5.0 ppb (5) N/A N/A 33.0 ppb (25) 0.16 ppb (2) N/A N/A 25.0
 
Jan. 17, 2020, 8 a.m. 7.1 ppb (7) 0.1 ppb (0) N/A 7.0 ppb (6) N/A N/A 32.0 ppb (25) 0.18 ppb (2) N/A 0.0 μg/m3 (0) 25.0
 
Jan. 17, 2020, 7 a.m. 8.3 ppb (8) 0.2 ppb (0) N/A 8.0 ppb (7) N/A N/A 29.0 ppb (22) 0.17 ppb (2) N/A 2.4 μg/m3 (10) 22.0
 
Jan. 17, 2020, 6 a.m. 5.6 ppb (5) 0.3 ppb (0) N/A 5.0 ppb (5) N/A N/A 36.0 ppb (28) 0.16 ppb (2) N/A 2.1 μg/m3 (9) 28.0
 
Jan. 17, 2020, 5 a.m. 4.9 ppb (5) 0.3 ppb (0) N/A 5.0 ppb (5) N/A N/A 38.0 ppb (29) 0.14 ppb (2) N/A -1.5 μg/m3 (0) 29.0
 
Jan. 17, 2020, 4 a.m. 6.5 ppb (6) 0.3 ppb (0) N/A 6.0 ppb (6) N/A N/A 36.0 ppb (28) 0.23 ppb (3) N/A 0.6 μg/m3 (2) 28.0
 
Jan. 17, 2020, 3 a.m. 7.6 ppb (7) 0.4 ppb (0) N/A 7.0 ppb (6) N/A N/A 37.0 ppb (28) 0.19 ppb (2) N/A 3.0 μg/m3 (12) 28.0
 
Jan. 17, 2020, 2 a.m. 8.6 ppb (8) 1.3 ppb (1) N/A 7.0 ppb (6) N/A N/A 39.0 ppb (30) 0.15 ppb (2) N/A 3.0 μg/m3 (12) 30.0
 
Jan. 17, 2020, 1 a.m. 8.3 ppb (8) 0.7 ppb (1) N/A 8.0 ppb (7) N/A N/A 40.0 ppb (31) 0.16 ppb (2) N/A 6.2 μg/m3 (26) 31.0
 
Jan. 17, 2020, midnight 10.4 ppb (10) 0.8 ppb (1) N/A 10.0 ppb (9) N/A N/A 41.0 ppb (32) 0.15 ppb (2) N/A 3.7 μg/m3 (15) 32.0
 
Jan. 16, 2020, 11 p.m. 12.2 ppb (11) 1.7 ppb (2) N/A 10.0 ppb (9) N/A N/A 42.0 ppb (32) 0.13 ppb (1) N/A 4.2 μg/m3 (18) 32.0
 
Jan. 16, 2020, 10 p.m. 12.5 ppb (12) 1.8 ppb (2) N/A 11.0 ppb (10) N/A N/A 41.0 ppb (32) 0.18 ppb (2) N/A 8.7 μg/m3 (36) 36.0
 
Jan. 16, 2020, 9 p.m. 17.3 ppb (16) 3.5 ppb (3) N/A 14.0 ppb (13) N/A N/A 39.0 ppb (30) 0.25 ppb (3) N/A 17.4 μg/m3 (61) 61.0
 
Jan. 16, 2020, 8 p.m. 23.6 ppb (22) 5.8 ppb (5) N/A 18.0 ppb (17) N/A N/A 34.0 ppb (26) 0.37 ppb (4) N/A 33.1 μg/m3 (95) 95.0
 
Jan. 16, 2020, 7 p.m. 17.6 ppb (16) 3.4 ppb (3) N/A 14.0 ppb (13) N/A N/A 36.0 ppb (28) 0.37 ppb (4) N/A 37.8 μg/m3 (106) 106.0
 
Jan. 16, 2020, 6 p.m. 29.7 ppb (28) 10.3 ppb (10) N/A 20.0 ppb (19) N/A N/A 18.0 ppb (14) 0.42 ppb (5) N/A 29.3 μg/m3 (87) 87.0
 
Jan. 16, 2020, 5 p.m. 59.8 ppb (56) 34.8 ppb (32) N/A 25.0 ppb (23) N/A N/A 5.0 ppb (4) 0.62 ppb (7) N/A 24.1 μg/m3 (76) 76.0
 
Jan. 16, 2020, 4 p.m. 52.2 ppb (48) 28.6 ppb (26) N/A 24.0 ppb (22) N/A N/A 3.0 ppb (2) 0.53 ppb (6) N/A 21.2 μg/m3 (70) 70.0
 
Jan. 16, 2020, 3 p.m. 54.2 ppb (50) 31.4 ppb (29) N/A 23.0 ppb (21) N/A N/A 1.0 ppb (1) 0.6 ppb (7) N/A 15.4 μg/m3 (57) 57.0
 
Jan. 16, 2020, 2 p.m. 41.0 ppb (38) 19.2 ppb (18) N/A 22.0 ppb (20) N/A N/A 1.0 ppb (1) 0.51 ppb (6) N/A 20.7 μg/m3 (69) 69.0
 
Jan. 16, 2020, 1 p.m. 31.7 ppb (29) 13.9 ppb (13) N/A 18.0 ppb (17) N/A N/A 1.0 ppb (1) 0.53 ppb (6) N/A 18.6 μg/m3 (64) 64.0
 
Jan. 16, 2020, noon 22.7 ppb (21) 8.0 ppb (7) N/A 15.0 ppb (14) N/A N/A 1.0 ppb (1) 0.4 ppb (4) N/A 18.0 μg/m3 (63) 63.0
 
Jan. 16, 2020, 11 a.m. 15.2 ppb (14) 2.6 ppb (2) N/A 13.0 ppb (12) N/A N/A 1.0 ppb (1) 0.37 ppb (4) N/A 17.3 μg/m3 (61) 61.0
 
Jan. 16, 2020, 10 a.m. 14.7 ppb (14) 1.7 ppb (2) N/A 13.0 ppb (12) N/A N/A 3.0 ppb (2) 0.36 ppb (4) N/A 18.7 μg/m3 (64) 64.0
 
Jan. 16, 2020, 9 a.m. 14.6 ppb (14) 0.8 ppb (1) N/A 14.0 ppb (13) N/A N/A 4.0 ppb (3) 0.38 ppb (4) N/A 17.7 μg/m3 (62) 62.0
 
Jan. 16, 2020, 8 a.m. 17.2 ppb (16) 1.8 ppb (2) N/A 15.0 ppb (14) N/A N/A 3.0 ppb (2) 0.43 ppb (5) N/A 11.4 μg/m3 (48) 48.0
 
Jan. 16, 2020, 7 a.m. 20.2 ppb (19) 1.4 ppb (1) N/A 19.0 ppb (18) N/A N/A 3.0 ppb (2) 0.43 ppb (5) N/A 10.2 μg/m3 (42) 42.0
 
Jan. 16, 2020, 6 a.m. 21.0 ppb (19) 1.5 ppb (1) N/A 20.0 ppb (19) N/A N/A 4.0 ppb (3) 0.43 ppb (5) N/A 15.3 μg/m3 (57) 57.0
 
Jan. 16, 2020, 5 a.m. 31.3 ppb (29) 6.1 ppb (6) N/A 25.0 ppb (23) N/A N/A 2.0 ppb (2) 0.54 ppb (6) N/A 21.4 μg/m3 (70) 70.0
 
Jan. 16, 2020, 4 a.m. 34.7 ppb (32) 4.6 ppb (4) N/A 30.0 ppb (28) N/A N/A 2.0 ppb (2) 0.61 ppb (7) N/A 23.3 μg/m3 (74) 74.0
 
Jan. 16, 2020, 3 a.m. 35.8 ppb (33) 2.1 ppb (2) N/A 34.0 ppb (31) N/A N/A 5.0 ppb (4) 0.65 ppb (7) N/A 31.1 μg/m3 (91) 91.0