AQSQID: 060376012

Site Name: Santa Clarita

Location: Newhall (Newhall), CA

Reporting: True, Located: True

Current AQI: 28.0

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
April 8, 2020, 7 a.m. 4.1 ppb (4) 0.2 ppb (0) N/A 4.0 ppb (4) N/A N/A 36.0 ppb (28) 0.16 ppb (2) N/A -1.0 μg/m3 (0) 28.0
 
April 8, 2020, 6 a.m. 3.4 ppb (3) 0.1 ppb (0) N/A 3.0 ppb (3) N/A N/A 37.0 ppb (28) 0.16 ppb (2) N/A 3.1 μg/m3 (13) 28.0
 
April 8, 2020, 5 a.m. 3.0 ppb (3) 0.1 ppb (0) N/A 3.0 ppb (3) N/A N/A 37.0 ppb (28) 0.16 ppb (2) N/A 1.1 μg/m3 (5) 28.0
 
April 8, 2020, 4 a.m. 2.1 ppb (2) 0.1 ppb (0) N/A 2.0 ppb (2) N/A N/A 39.0 ppb (30) 0.16 ppb (2) N/A 4.5 μg/m3 (19) 30.0
 
April 8, 2020, 3 a.m. 5.4 ppb (5) 0.3 ppb (0) N/A 5.0 ppb (5) N/A N/A 31.0 ppb (24) 0.18 ppb (2) N/A 3.3 μg/m3 (14) 24.0
 
April 8, 2020, 2 a.m. 4.3 ppb (4) 0.2 ppb (0) N/A 4.0 ppb (4) N/A N/A 32.0 ppb (25) 0.17 ppb (2) N/A 0.4 μg/m3 (2) 25.0
 
April 8, 2020, 1 a.m. 4.9 ppb (5) 0.6 ppb (1) N/A 4.0 ppb (4) N/A N/A 36.0 ppb (28) 0.16 ppb (2) N/A 4.5 μg/m3 (19) 28.0
 
April 8, 2020, midnight 3.9 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 7.9 μg/m3 (33) 33.0
 
April 7, 2020, 11 p.m. 7.2 ppb (7) 0.7 ppb (1) N/A 6.0 ppb (6) N/A N/A 31.0 ppb (24) 0.17 ppb (2) N/A 4.7 μg/m3 (20) 24.0
 
April 7, 2020, 10 p.m. 3.6 ppb (3) 0.7 ppb (1) N/A 3.0 ppb (3) N/A N/A 36.0 ppb (28) 0.17 ppb (2) N/A 0.8 μg/m3 (3) 28.0
 
April 7, 2020, 9 p.m. 4.0 ppb (4) 1.0 ppb (1) N/A 3.0 ppb (3) N/A N/A 35.0 ppb (27) 0.15 ppb (2) N/A -2.0 μg/m3 (0) 27.0
 
April 7, 2020, 8 p.m. 3.0 ppb (3) 0.5 ppb (0) N/A 2.0 ppb (2) N/A N/A 38.0 ppb (29) 0.15 ppb (2) N/A -4.9 μg/m3 (0) 29.0
 
April 7, 2020, 7 p.m. 3.1 ppb (3) 0.6 ppb (1) N/A 2.0 ppb (2) N/A N/A 39.0 ppb (30) 0.15 ppb (2) N/A -3.5 μg/m3 (0) 30.0
 
April 7, 2020, 6 p.m. 4.2 ppb (4) 1.2 ppb (1) N/A 3.0 ppb (3) N/A N/A 35.0 ppb (27) 0.15 ppb (2) N/A 3.2 μg/m3 (13) 27.0
 
April 7, 2020, 5 p.m. 6.2 ppb (6) 2.2 ppb (2) N/A 4.0 ppb (4) N/A N/A 29.0 ppb (22) 0.17 ppb (2) N/A 9.1 μg/m3 (38) 38.0
 
April 7, 2020, 4 p.m. 10.0 ppb (9) 4.1 ppb (4) N/A 6.0 ppb (6) N/A N/A 20.0 ppb (15) 0.19 ppb (2) N/A 8.9 μg/m3 (37) 37.0
 
April 7, 2020, 3 p.m. 20.3 ppb (19) 8.6 ppb (8) N/A 12.0 ppb (11) N/A N/A 7.0 ppb (5) 0.26 ppb (3) N/A 4.7 μg/m3 (20) 20.0
 
April 7, 2020, 2 p.m. 24.1 ppb (22) 12.1 ppb (11) N/A 12.0 ppb (11) N/A N/A 3.0 ppb (2) 0.29 ppb (3) N/A 3.9 μg/m3 (16) 22.0
 
April 7, 2020, 1 p.m. 11.4 ppb (11) 2.4 ppb (2) N/A 9.0 ppb (8) N/A N/A 2.0 ppb (2) 0.24 ppb (3) N/A 3.1 μg/m3 (13) 13.0
 
April 7, 2020, noon 7.6 ppb (7) 1.1 ppb (1) N/A 7.0 ppb (6) N/A N/A 3.0 ppb (2) 0.22 ppb (2) N/A 4.1 μg/m3 (17) 17.0
 
April 7, 2020, 11 a.m. 10.0 ppb (9) 3.7 ppb (3) N/A 6.0 ppb (6) N/A N/A 1.0 ppb (1) 0.19 ppb (2) N/A 4.5 μg/m3 (19) 19.0
 
April 7, 2020, 10 a.m. 17.7 ppb (16) 8.8 ppb (8) N/A 9.0 ppb (8) N/A N/A 2.0 ppb (2) 0.19 ppb (2) N/A 3.1 μg/m3 (13) 16.0
 
April 7, 2020, 9 a.m. 4.2 ppb (4) 0.2 ppb (0) N/A 4.0 ppb (4) N/A N/A 9.0 ppb (7) 0.18 ppb (2) N/A 2.6 μg/m3 (11) 11.0
 
April 7, 2020, 8 a.m. 4.2 ppb (4) 0.2 ppb (0) N/A 4.0 ppb (4) N/A N/A 14.0 ppb (11) 0.19 ppb (2) N/A 2.9 μg/m3 (12) 12.0
 
April 7, 2020, 7 a.m. 3.9 ppb (4) 0.1 ppb (0) N/A 4.0 ppb (4) N/A N/A 22.0 ppb (17) 0.18 ppb (2) N/A 4.2 μg/m3 (18) 18.0
 
April 7, 2020, 6 a.m. 4.3 ppb (4) 0.3 ppb (0) N/A 4.0 ppb (4) N/A N/A 14.0 ppb (11) 0.22 ppb (2) N/A 4.5 μg/m3 (19) 19.0
 
April 7, 2020, 5 a.m. 6.0 ppb (6) 0.3 ppb (0) N/A 6.0 ppb (6) N/A N/A 13.0 ppb (10) 0.24 ppb (3) N/A 5.7 μg/m3 (24) 24.0
 
April 7, 2020, 4 a.m. 4.5 ppb (4) 0.2 ppb (0) N/A 4.0 ppb (4) N/A N/A 17.0 ppb (13) 0.23 ppb (3) N/A 5.7 μg/m3 (24) 24.0
 
April 7, 2020, 3 a.m. 8.1 ppb (8) 1.6 ppb (1) N/A 7.0 ppb (6) N/A N/A 24.0 ppb (18) 0.24 ppb (3) N/A 2.8 μg/m3 (12) 18.0
 
April 7, 2020, 2 a.m. 5.7 ppb (5) 0.4 ppb (0) N/A 5.0 ppb (5) N/A N/A 31.0 ppb (24) 0.21 ppb (2) N/A -0.3 μg/m3 (0) 24.0
 
April 7, 2020, 1 a.m. 3.1 ppb (3) 0.4 ppb (0) N/A 3.0 ppb (3) N/A N/A 39.0 ppb (30) 0.17 ppb (2) N/A 0.4 μg/m3 (2) 30.0
 
April 7, 2020, midnight 3.3 ppb (3) 0.6 ppb (1) N/A 3.0 ppb (3) N/A N/A 40.0 ppb (31) 0.16 ppb (2) N/A 3.2 μg/m3 (13) 31.0
 
April 6, 2020, 11 p.m. 4.1 ppb (4) 1.0 ppb (1) N/A 3.0 ppb (3) N/A N/A 38.0 ppb (29) 0.14 ppb (2) N/A 4.0 μg/m3 (17) 29.0
 
April 6, 2020, 10 p.m. 3.1 ppb (3) 0.6 ppb (1) N/A 2.0 ppb (2) N/A N/A 37.0 ppb (28) 0.13 ppb (1) N/A 1.4 μg/m3 (6) 28.0
 
April 6, 2020, 9 p.m. 2.6 ppb (2) 0.7 ppb (1) N/A 2.0 ppb (2) N/A N/A 38.0 ppb (29) 0.12 ppb (1) N/A 2.6 μg/m3 (11) 29.0
 
April 6, 2020, 8 p.m. 3.4 ppb (3) 1.0 ppb (1) N/A 2.0 ppb (2) N/A N/A 38.0 ppb (29) 0.12 ppb (1) N/A 1.4 μg/m3 (6) 29.0
 
April 6, 2020, 7 p.m. 3.4 ppb (3) 0.8 ppb (1) N/A 3.0 ppb (3) N/A N/A 37.0 ppb (28) 0.12 ppb (1) N/A -0.8 μg/m3 (0) 28.0
 
April 6, 2020, 6 p.m. 5.0 ppb (5) 1.2 ppb (1) N/A 4.0 ppb (4) N/A N/A 37.0 ppb (28) 0.12 ppb (1) N/A 3.8 μg/m3 (16) 28.0
 
April 6, 2020, 5 p.m. 3.6 ppb (3) 0.7 ppb (1) N/A 3.0 ppb (3) N/A N/A 37.0 ppb (28) 0.13 ppb (1) N/A 7.7 μg/m3 (32) 32.0
 
April 6, 2020, 4 p.m. 3.8 ppb (4) 0.8 ppb (1) N/A 3.0 ppb (3) N/A N/A 35.0 ppb (27) 0.13 ppb (1) N/A 7.9 μg/m3 (33) 33.0
 
April 6, 2020, 3 p.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 2.4 μg/m3 (10) 10.0
 
April 6, 2020, 2 p.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 2.4 μg/m3 (10) 10.0
 
April 6, 2020, 1 p.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 5.7 μg/m3 (24) 24.0
 
April 6, 2020, noon N/A N/A N/A N/A N/A N/A N/A N/A N/A 2.1 μg/m3 (9) 9.0
 
April 6, 2020, 5 a.m. 1.3 ppb (1) 0.2 ppb (0) N/A 1.0 ppb (1) N/A N/A 30.0 ppb (23) 0.11 ppb (1) N/A -1.0 μg/m3 (0) 23.0
 
April 6, 2020, 4 a.m. 3.9 ppb (4) 1.7 ppb (2) N/A 2.0 ppb (2) N/A N/A 28.0 ppb (22) 0.12 ppb (1) N/A 0.9 μg/m3 (4) 22.0
 
April 6, 2020, 3 a.m. 1.4 ppb (1) 0.2 ppb (0) N/A 1.0 ppb (1) N/A N/A 30.0 ppb (23) 0.12 ppb (1) N/A 2.1 μg/m3 (9) 23.0
 
April 6, 2020, 2 a.m. 1.8 ppb (2) 0.4 ppb (0) N/A 1.0 ppb (1) N/A N/A 31.0 ppb (24) 0.13 ppb (1) N/A -1.5 μg/m3 (0) 24.0
 
April 6, 2020, 1 a.m. 1.7 ppb (2) 0.4 ppb (0) N/A 1.0 ppb (1) N/A N/A 32.0 ppb (25) 0.11 ppb (1) N/A -3.0 μg/m3 (0) 25.0
 
April 6, 2020, midnight 1.7 ppb (2) 0.3 ppb (0) N/A 1.0 ppb (1) N/A N/A 33.0 ppb (25) 0.1 ppb (1) N/A -1.8 μg/m3 (0) 25.0
 
April 5, 2020, 11 p.m. 1.5 ppb (1) 0.4 ppb (0) N/A 1.0 ppb (1) N/A N/A 34.0 ppb (26) 0.11 ppb (1) N/A 0.1 μg/m3 (0) 26.0
 
April 5, 2020, 10 p.m. 1.7 ppb (2) 0.5 ppb (0) N/A 1.0 ppb (1) N/A N/A 36.0 ppb (28) 0.1 ppb (1) N/A 0.4 μg/m3 (2) 28.0
 
April 5, 2020, 9 p.m. 2.2 ppb (2) 0.3 ppb (0) N/A 2.0 ppb (2) N/A N/A 36.0 ppb (28) 0.11 ppb (1) N/A 0.6 μg/m3 (2) 28.0
 
April 5, 2020, 8 p.m. 2.1 ppb (2) 0.3 ppb (0) N/A 2.0 ppb (2) N/A N/A 37.0 ppb (28) 0.11 ppb (1) N/A 3.5 μg/m3 (15) 28.0
 
April 5, 2020, 7 p.m. 1.8 ppb (2) 0.3 ppb (0) N/A 2.0 ppb (2) N/A N/A 37.0 ppb (28) 0.1 ppb (1) N/A 4.2 μg/m3 (18) 28.0
 
April 5, 2020, 6 p.m. 1.6 ppb (1) 0.2 ppb (0) N/A 1.0 ppb (1) N/A N/A 38.0 ppb (29) 0.1 ppb (1) N/A 2.3 μg/m3 (10) 29.0
 
April 5, 2020, 5 p.m. 1.9 ppb (2) 0.5 ppb (0) N/A 1.0 ppb (1) N/A N/A 36.0 ppb (28) 0.1 ppb (1) N/A 4.2 μg/m3 (18) 28.0
 
April 5, 2020, 4 p.m. 1.7 ppb (2) 0.3 ppb (0) N/A 1.0 ppb (1) N/A N/A 36.0 ppb (28) 0.11 ppb (1) N/A 5.4 μg/m3 (23) 28.0
 
April 5, 2020, 3 p.m. 2.1 ppb (2) 0.5 ppb (0) N/A 2.0 ppb (2) N/A N/A 36.0 ppb (28) 0.12 ppb (1) N/A 1.6 μg/m3 (7) 28.0
 
April 5, 2020, 2 p.m. 1.6 ppb (1) 0.2 ppb (0) N/A 1.0 ppb (1) N/A N/A 37.0 ppb (28) 0.13 ppb (1) N/A 1.6 μg/m3 (7) 28.0
 
April 5, 2020, 1 p.m. 1.6 ppb (1) 0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 38.0 ppb (29) 0.13 ppb (1) N/A 5.2 μg/m3 (22) 29.0
 
April 5, 2020, noon 1.6 ppb (1) 0.2 ppb (0) N/A 1.0 ppb (1) N/A N/A 39.0 ppb (30) 0.14 ppb (2) N/A 7.4 μg/m3 (31) 31.0
 
April 5, 2020, 11 a.m. 1.3 ppb (1) 0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 40.0 ppb (31) 0.14 ppb (2) N/A 7.9 μg/m3 (33) 33.0
 
April 5, 2020, 10 a.m. 1.6 ppb (1) 0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 40.0 ppb (31) 0.14 ppb (2) N/A 6.9 μg/m3 (29) 31.0
 
April 5, 2020, 9 a.m. 1.8 ppb (2) 0.1 ppb (0) N/A 2.0 ppb (2) N/A N/A 41.0 ppb (32) 0.14 ppb (2) N/A 6.7 μg/m3 (28) 32.0
 
April 5, 2020, 8 a.m. 1.9 ppb (2) 0.1 ppb (0) N/A 2.0 ppb (2) N/A N/A 41.0 ppb (32) 0.15 ppb (2) N/A 6.9 μg/m3 (29) 32.0
 
April 5, 2020, 7 a.m. 2.5 ppb (2) 0.1 ppb (0) N/A 2.0 ppb (2) N/A N/A 44.0 ppb (34) 0.14 ppb (2) N/A 15.2 μg/m3 (57) 57.0
 
April 5, 2020, 6 a.m. 2.6 ppb (2) 0.2 ppb (0) N/A 2.0 ppb (2) N/A N/A 44.0 ppb (34) 0.15 ppb (2) N/A 8.1 μg/m3 (34) 34.0
 
April 5, 2020, 5 a.m. 3.3 ppb (3) 0.1 ppb (0) N/A 3.0 ppb (3) N/A N/A 44.0 ppb (34) 0.15 ppb (2) N/A 8.9 μg/m3 (37) 37.0
 
April 5, 2020, 4 a.m. 2.7 ppb (3) 0.1 ppb (0) N/A 3.0 ppb (3) N/A N/A 46.0 ppb (35) 0.14 ppb (2) N/A 9.4 μg/m3 (39) 39.0
 
April 5, 2020, 3 a.m. 3.1 ppb (3) 0.1 ppb (0) N/A 3.0 ppb (3) N/A N/A 46.0 ppb (35) 0.14 ppb (2) N/A 9.6 μg/m3 (40) 40.0
 
April 5, 2020, 2 a.m. 3.7 ppb (3) 0.2 ppb (0) N/A 4.0 ppb (4) N/A N/A 46.0 ppb (35) 0.16 ppb (2) N/A 9.1 μg/m3 (38) 38.0
 
April 5, 2020, 1 a.m. 3.5 ppb (3) 0.4 ppb (0) N/A 3.0 ppb (3) N/A N/A 49.0 ppb (38) 0.14 ppb (2) N/A 6.9 μg/m3 (29) 38.0
 
April 5, 2020, midnight 3.3 ppb (3) 0.4 ppb (0) N/A 3.0 ppb (3) N/A N/A 50.0 ppb (38) 0.13 ppb (1) N/A 7.2 μg/m3 (30) 38.0
 
April 4, 2020, 11 p.m. 3.4 ppb (3) 0.5 ppb (0) N/A 3.0 ppb (3) N/A N/A 51.0 ppb (39) 0.12 ppb (1) N/A 5.9 μg/m3 (25) 39.0
 
April 4, 2020, 10 p.m. 3.5 ppb (3) 0.4 ppb (0) N/A 3.0 ppb (3) N/A N/A 52.0 ppb (40) 0.14 ppb (2) N/A 4.9 μg/m3 (20) 40.0
 
April 4, 2020, 9 p.m. 4.0 ppb (4) 0.4 ppb (0) N/A 4.0 ppb (4) N/A N/A 53.0 ppb (41) 0.14 ppb (2) N/A 8.8 μg/m3 (37) 41.0
 
April 4, 2020, 8 p.m. 4.5 ppb (4) 0.7 ppb (1) N/A 4.0 ppb (4) N/A N/A 53.0 ppb (41) 0.14 ppb (2) N/A 8.1 μg/m3 (34) 41.0
 
April 4, 2020, 7 p.m. 4.7 ppb (4) 0.9 ppb (1) N/A 4.0 ppb (4) N/A N/A 48.0 ppb (37) 0.13 ppb (1) N/A 9.4 μg/m3 (39) 39.0
 
April 4, 2020, 6 p.m. 6.1 ppb (6) 1.2 ppb (1) N/A 5.0 ppb (5) N/A N/A 42.0 ppb (32) 0.16 ppb (2) N/A 13.4 μg/m3 (53) 53.0
 
April 4, 2020, 5 p.m. 6.9 ppb (6) 1.3 ppb (1) N/A 6.0 ppb (6) N/A N/A 40.0 ppb (31) 0.17 ppb (2) N/A 12.8 μg/m3 (52) 52.0
 
April 4, 2020, 4 p.m. 10.3 ppb (10) 2.2 ppb (2) N/A 8.0 ppb (7) N/A N/A 32.0 ppb (25) 0.2 ppb (2) N/A 11.4 μg/m3 (48) 48.0
 
April 4, 2020, 3 p.m. 16.8 ppb (16) 6.8 ppb (6) N/A 10.0 ppb (9) N/A N/A 12.0 ppb (9) 0.29 ppb (3) N/A 8.4 μg/m3 (35) 35.0
 
April 4, 2020, 2 p.m. 13.9 ppb (13) 6.0 ppb (6) N/A 8.0 ppb (7) N/A N/A 5.0 ppb (4) 0.3 ppb (3) N/A 4.5 μg/m3 (19) 19.0
 
April 4, 2020, 1 p.m. 12.2 ppb (11) 3.6 ppb (3) N/A 9.0 ppb (8) N/A N/A 4.0 ppb (3) 0.26 ppb (3) N/A 6.9 μg/m3 (29) 29.0
 
April 4, 2020, noon 6.4 ppb (6) 0.7 ppb (1) N/A 6.0 ppb (6) N/A N/A 5.0 ppb (4) 0.25 ppb (3) N/A 4.5 μg/m3 (19) 19.0
 
April 4, 2020, 11 a.m. 4.6 ppb (4) 0.2 ppb (0) N/A 4.0 ppb (4) N/A N/A 10.0 ppb (8) 0.21 ppb (2) N/A 2.9 μg/m3 (12) 12.0
 
April 4, 2020, 10 a.m. 5.6 ppb (5) 0.4 ppb (0) N/A 5.0 ppb (5) N/A N/A 11.0 ppb (8) 0.24 ppb (3) N/A 8.9 μg/m3 (37) 37.0
 
April 4, 2020, 9 a.m. 8.4 ppb (8) 0.4 ppb (0) N/A 8.0 ppb (7) N/A N/A 9.0 ppb (7) 0.27 ppb (3) N/A 7.9 μg/m3 (33) 33.0
 
April 4, 2020, 8 a.m. 9.5 ppb (9) 0.5 ppb (0) N/A 9.0 ppb (8) N/A N/A 11.0 ppb (8) 0.29 ppb (3) N/A 7.7 μg/m3 (32) 32.0
 
April 4, 2020, 7 a.m. 9.0 ppb (8) 0.3 ppb (0) N/A 9.0 ppb (8) N/A N/A 15.0 ppb (12) 0.29 ppb (3) N/A 9.1 μg/m3 (38) 38.0
 
April 4, 2020, 6 a.m. 8.4 ppb (8) 0.3 ppb (0) N/A 8.0 ppb (7) N/A N/A 18.0 ppb (14) 0.28 ppb (3) N/A 6.4 μg/m3 (27) 27.0
 
April 4, 2020, 5 a.m. 9.6 ppb (9) 0.3 ppb (0) N/A 9.0 ppb (8) N/A N/A 30.0 ppb (23) 0.23 ppb (3) N/A 4.7 μg/m3 (20) 23.0
 
April 4, 2020, 4 a.m. 8.6 ppb (8) 0.2 ppb (0) N/A 8.0 ppb (7) N/A N/A 37.0 ppb (28) 0.2 ppb (2) N/A 6.2 μg/m3 (26) 28.0
 
April 4, 2020, 3 a.m. 8.3 ppb (8) 0.2 ppb (0) N/A 8.0 ppb (7) N/A N/A 40.0 ppb (31) 0.19 ppb (2) N/A 5.9 μg/m3 (25) 31.0
 
April 4, 2020, 2 a.m. 9.0 ppb (8) 0.4 ppb (0) N/A 9.0 ppb (8) N/A N/A 43.0 ppb (33) 0.18 ppb (2) N/A 3.0 μg/m3 (12) 33.0
 
April 4, 2020, 1 a.m. 7.6 ppb (7) 0.5 ppb (0) N/A 7.0 ppb (6) N/A N/A 49.0 ppb (38) 0.18 ppb (2) N/A 4.6 μg/m3 (19) 38.0
 
April 4, 2020, midnight 7.6 ppb (7) 1.5 ppb (1) N/A 6.0 ppb (6) N/A N/A 52.0 ppb (40) 0.18 ppb (2) N/A 8.6 μg/m3 (36) 40.0
 
April 3, 2020, 11 p.m. 5.3 ppb (5) 0.8 ppb (1) N/A 5.0 ppb (5) N/A N/A 54.0 ppb (42) 0.18 ppb (2) N/A 6.4 μg/m3 (27) 42.0
 
April 3, 2020, 10 p.m. 5.2 ppb (5) 0.7 ppb (1) N/A 4.0 ppb (4) N/A N/A 56.0 ppb (43) 0.2 ppb (2) N/A 2.3 μg/m3 (10) 43.0
 
April 3, 2020, 9 p.m. 3.9 ppb (4) 0.6 ppb (1) N/A 3.0 ppb (3) N/A N/A 55.0 ppb (42) 0.19 ppb (2) N/A 2.0 μg/m3 (8) 42.0
 
April 3, 2020, 8 p.m. 3.0 ppb (3) 0.5 ppb (0) N/A 3.0 ppb (3) N/A N/A 55.0 ppb (42) 0.19 ppb (2) N/A 4.0 μg/m3 (17) 42.0
 
April 3, 2020, 7 p.m. 3.3 ppb (3) 0.6 ppb (1) N/A 3.0 ppb (3) N/A N/A 51.0 ppb (39) 0.19 ppb (2) N/A 4.2 μg/m3 (18) 39.0
 
April 3, 2020, 6 p.m. 6.2 ppb (6) 1.8 ppb (2) N/A 4.0 ppb (4) N/A N/A 46.0 ppb (35) 0.21 ppb (2) N/A -1.3 μg/m3 (0) 35.0
 
April 3, 2020, 5 p.m. 5.8 ppb (5) 1.4 ppb (1) N/A 4.0 ppb (4) N/A N/A 43.0 ppb (33) 0.21 ppb (2) N/A -1.5 μg/m3 (0) 33.0
 
April 3, 2020, 4 p.m. 8.8 ppb (8) 2.4 ppb (2) N/A 6.0 ppb (6) N/A N/A 40.0 ppb (31) 0.23 ppb (3) N/A 7.6 μg/m3 (32) 32.0
 
April 3, 2020, 3 p.m. 37.8 ppb (35) 16.5 ppb (15) N/A 21.0 ppb (19) N/A N/A 17.0 ppb (13) 0.44 ppb (5) N/A 8.2 μg/m3 (34) 35.0
 
April 3, 2020, 2 p.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 4.3 μg/m3 (18) 18.0
 
April 3, 2020, 1 p.m. 22.8 ppb (21) 3.8 ppb (4) N/A 19.0 ppb (18) N/A N/A 6.0 ppb (5) 0.3 ppb (3) N/A 7.2 μg/m3 (30) 30.0
 
April 3, 2020, noon 8.8 ppb (8) 0.8 ppb (1) N/A 8.0 ppb (7) N/A N/A 17.0 ppb (13) 0.23 ppb (3) N/A 8.2 μg/m3 (34) 34.0
 
April 3, 2020, 11 a.m. 7.7 ppb (7) 0.1 ppb (0) N/A 8.0 ppb (7) N/A N/A 16.0 ppb (12) 0.2 ppb (2) N/A 5.7 μg/m3 (24) 24.0
 
April 3, 2020, 10 a.m. 7.4 ppb (7) 0.2 ppb (0) N/A 7.0 ppb (6) N/A N/A 16.0 ppb (12) 0.19 ppb (2) N/A 0.6 μg/m3 (2) 12.0
 
April 3, 2020, 9 a.m. 5.2 ppb (5) 0.2 ppb (0) N/A 5.0 ppb (5) N/A N/A 18.0 ppb (14) 0.19 ppb (2) N/A -0.8 μg/m3 (0) 14.0
 
April 3, 2020, 8 a.m. 4.4 ppb (4) 0.2 ppb (0) N/A 4.0 ppb (4) N/A N/A 22.0 ppb (17) 0.19 ppb (2) N/A 4.5 μg/m3 (19) 19.0
 
April 3, 2020, 7 a.m. 5.1 ppb (5) 0.2 ppb (0) N/A 5.0 ppb (5) N/A N/A 23.0 ppb (18) 0.2 ppb (2) N/A 4.2 μg/m3 (18) 18.0
 
April 3, 2020, 6 a.m. 5.5 ppb (5) 0.2 ppb (0) N/A 5.0 ppb (5) N/A N/A 25.0 ppb (19) 0.19 ppb (2) N/A 6.9 μg/m3 (29) 29.0
 
April 3, 2020, 5 a.m. 4.7 ppb (4) 0.2 ppb (0) N/A 5.0 ppb (5) N/A N/A 33.0 ppb (25) 0.15 ppb (2) N/A 9.6 μg/m3 (40) 40.0
 
April 3, 2020, 4 a.m. 4.3 ppb (4) 0.1 ppb (0) N/A 4.0 ppb (4) N/A N/A 35.0 ppb (27) 0.19 ppb (2) N/A 8.6 μg/m3 (36) 36.0
 
April 3, 2020, 3 a.m. 4.1 ppb (4) 0.2 ppb (0) N/A 4.0 ppb (4) N/A N/A 37.0 ppb (28) 0.12 ppb (1) N/A 7.4 μg/m3 (31) 31.0
 
April 3, 2020, 2 a.m. 5.7 ppb (5) 0.6 ppb (1) N/A 5.0 ppb (5) N/A N/A 41.0 ppb (32) 0.12 ppb (1) N/A 5.4 μg/m3 (23) 32.0
 
April 3, 2020, 1 a.m. 3.3 ppb (3) 0.3 ppb (0) N/A 3.0 ppb (3) N/A N/A 46.0 ppb (35) 0.12 ppb (1) N/A 8.1 μg/m3 (34) 35.0
 
April 3, 2020, midnight 3.7 ppb (3) 0.5 ppb (0) N/A 3.0 ppb (3) N/A N/A 51.0 ppb (39) 0.16 ppb (2) N/A 11.4 μg/m3 (48) 48.0
 
April 2, 2020, 11 p.m. 4.2 ppb (4) 0.4 ppb (0) N/A 4.0 ppb (4) N/A N/A 50.0 ppb (38) 0.18 ppb (2) N/A 15.0 μg/m3 (56) 56.0
 
April 2, 2020, 10 p.m. 4.7 ppb (4) 0.6 ppb (1) N/A 4.0 ppb (4) N/A N/A 54.0 ppb (42) 0.19 ppb (2) N/A 6.6 μg/m3 (28) 42.0
 
April 2, 2020, 9 p.m. 1.9 ppb (2) 0.3 ppb (0) N/A 2.0 ppb (2) N/A N/A 55.0 ppb (42) 0.14 ppb (2) N/A 2.9 μg/m3 (12) 42.0
 
April 2, 2020, 8 p.m. 2.4 ppb (2) 0.4 ppb (0) N/A 2.0 ppb (2) N/A N/A 53.0 ppb (41) 0.15 ppb (2) N/A -0.1 μg/m3 (0) 41.0
 
April 2, 2020, 7 p.m. 3.4 ppb (3) 0.7 ppb (1) N/A 3.0 ppb (3) N/A N/A 51.0 ppb (39) 0.15 ppb (2) N/A 0.8 μg/m3 (3) 39.0
 
April 2, 2020, 6 p.m. 2.7 ppb (3) 0.5 ppb (0) N/A 2.0 ppb (2) N/A N/A 49.0 ppb (38) 0.15 ppb (2) N/A 3.2 μg/m3 (13) 38.0
 
April 2, 2020, 5 p.m. 2.3 ppb (2) 0.5 ppb (0) N/A 2.0 ppb (2) N/A N/A 46.0 ppb (35) 0.15 ppb (2) N/A 1.3 μg/m3 (5) 35.0
 
April 2, 2020, 4 p.m. 2.6 ppb (2) 0.6 ppb (1) N/A 2.0 ppb (2) N/A N/A 45.0 ppb (35) 0.16 ppb (2) N/A -0.5 μg/m3 (0) 35.0
 
April 2, 2020, 3 p.m. 3.8 ppb (4) 0.7 ppb (1) N/A 3.0 ppb (3) N/A N/A 42.0 ppb (32) 0.17 ppb (2) N/A -1.0 μg/m3 (0) 32.0
 
April 2, 2020, 2 p.m. 6.1 ppb (6) 1.0 ppb (1) N/A 5.0 ppb (5) N/A N/A 39.0 ppb (30) 0.21 ppb (2) N/A 0.1 μg/m3 (0) 30.0
 
April 2, 2020, 1 p.m. 5.1 ppb (5) 0.4 ppb (0) N/A 5.0 ppb (5) N/A N/A 40.0 ppb (31) 0.16 ppb (2) N/A 2.7 μg/m3 (11) 31.0
 
April 2, 2020, noon 5.8 ppb (5) 0.3 ppb (0) N/A 6.0 ppb (6) N/A N/A 36.0 ppb (28) 0.17 ppb (2) N/A 2.5 μg/m3 (10) 28.0
 
April 2, 2020, 11 a.m. 7.4 ppb (7) 0.2 ppb (0) N/A 7.0 ppb (6) N/A N/A 27.0 ppb (21) 0.15 ppb (2) N/A 0.6 μg/m3 (2) 21.0
 
April 2, 2020, 10 a.m. 7.6 ppb (7) 0.3 ppb (0) N/A 7.0 ppb (6) N/A N/A 28.0 ppb (22) 0.18 ppb (2) N/A 15.5 μg/m3 (57) 57.0
 
April 2, 2020, 9 a.m. 5.9 ppb (5) 0.2 ppb (0) N/A 6.0 ppb (6) N/A N/A 34.0 ppb (26) 0.18 ppb (2) N/A 20.7 μg/m3 (69) 69.0
 
April 2, 2020, 8 a.m. 8.3 ppb (8) 0.3 ppb (0) N/A 8.0 ppb (7) N/A N/A 30.0 ppb (23) 0.22 ppb (2) N/A 14.8 μg/m3 (56) 56.0
 
April 2, 2020, 7 a.m. 11.2 ppb (10) 0.2 ppb (0) N/A 11.0 ppb (10) N/A N/A 29.0 ppb (22) 0.23 ppb (3) N/A 11.6 μg/m3 (48) 48.0
 
April 2, 2020, 6 a.m. 7.4 ppb (7) 0.1 ppb (0) N/A 7.0 ppb (6) N/A N/A 41.0 ppb (32) 0.2 ppb (2) N/A 10.1 μg/m3 (42) 42.0
 
April 2, 2020, 5 a.m. 9.3 ppb (9) 1.3 ppb (1) N/A 8.0 ppb (7) N/A N/A 43.0 ppb (33) 0.15 ppb (2) N/A 11.1 μg/m3 (46) 46.0
 
April 2, 2020, 4 a.m. 11.9 ppb (11) 2.7 ppb (3) N/A 9.0 ppb (8) N/A N/A 44.0 ppb (34) 0.17 ppb (2) N/A 8.9 μg/m3 (37) 37.0
 
April 2, 2020, 3 a.m. 8.4 ppb (8) 0.2 ppb (0) N/A 8.0 ppb (7) N/A N/A 47.0 ppb (36) 0.17 ppb (2) N/A 5.9 μg/m3 (25) 36.0
 
April 2, 2020, 2 a.m. 8.9 ppb (8) 0.6 ppb (1) N/A 8.0 ppb (7) N/A N/A 51.0 ppb (39) 0.17 ppb (2) N/A 2.7 μg/m3 (11) 39.0
 
April 2, 2020, 1 a.m. 6.7 ppb (6) 0.4 ppb (0) N/A 6.0 ppb (6) N/A N/A 58.0 ppb (45) 0.15 ppb (2) N/A 5.7 μg/m3 (24) 45.0
 
April 2, 2020, midnight 7.3 ppb (7) 0.6 ppb (1) N/A 7.0 ppb (6) N/A N/A 64.0 ppb (49) 0.16 ppb (2) N/A 11.4 μg/m3 (48) 49.0
 
April 1, 2020, 11 p.m. 7.3 ppb (7) 0.8 ppb (1) N/A 7.0 ppb (6) N/A N/A 66.0 ppb (51) 0.17 ppb (2) N/A 11.1 μg/m3 (46) 51.0
 
April 1, 2020, 10 p.m. 9.7 ppb (9) 1.2 ppb (1) N/A 8.0 ppb (7) N/A N/A 65.0 ppb (50) 0.21 ppb (2) N/A 11.5 μg/m3 (48) 50.0
 
April 1, 2020, 9 p.m. 9.8 ppb (9) 1.4 ppb (1) N/A 8.0 ppb (7) N/A N/A 64.0 ppb (49) 0.25 ppb (3) N/A 8.6 μg/m3 (36) 49.0
 
April 1, 2020, 8 p.m. 6.5 ppb (6) 1.0 ppb (1) N/A 6.0 ppb (6) N/A N/A 59.0 ppb (45) 0.19 ppb (2) N/A 6.6 μg/m3 (28) 45.0
 
April 1, 2020, 7 p.m. 9.6 ppb (9) 2.0 ppb (2) N/A 8.0 ppb (7) N/A N/A 51.0 ppb (39) 0.21 ppb (2) N/A 4.2 μg/m3 (18) 39.0
 
April 1, 2020, 6 p.m. 6.1 ppb (6) 1.4 ppb (1) N/A 5.0 ppb (5) N/A N/A 43.0 ppb (33) 0.16 ppb (2) N/A -0.3 μg/m3 (0) 33.0
 
April 1, 2020, 5 p.m. 4.4 ppb (4) 1.0 ppb (1) N/A 3.0 ppb (3) N/A N/A 40.0 ppb (31) 0.13 ppb (1) N/A 1.3 μg/m3 (5) 31.0
 
April 1, 2020, 4 p.m. 4.4 ppb (4) 1.0 ppb (1) N/A 3.0 ppb (3) N/A N/A 37.0 ppb (28) 0.14 ppb (2) N/A 4.9 μg/m3 (20) 28.0
 
April 1, 2020, 3 p.m. 18.2 ppb (17) 6.9 ppb (6) N/A 11.0 ppb (10) N/A N/A 22.0 ppb (17) 0.3 ppb (3) N/A 4.2 μg/m3 (18) 18.0
 
April 1, 2020, 2 p.m. 28.4 ppb (26) 11.7 ppb (11) N/A 17.0 ppb (16) N/A N/A 7.0 ppb (5) 0.37 ppb (4) N/A 3.5 μg/m3 (15) 26.0
 
April 1, 2020, 1 p.m. 16.3 ppb (15) 1.1 ppb (1) N/A 15.0 ppb (14) N/A N/A 8.0 ppb (6) 0.28 ppb (3) N/A 7.1 μg/m3 (30) 30.0
 
April 1, 2020, noon 11.1 ppb (10) 0.7 ppb (1) N/A 10.0 ppb (9) N/A N/A 13.0 ppb (10) 0.2 ppb (2) N/A 5.2 μg/m3 (22) 22.0
 
April 1, 2020, 11 a.m. 5.4 ppb (5) 0.2 ppb (0) N/A 5.0 ppb (5) N/A N/A 16.0 ppb (12) 0.15 ppb (2) N/A 1.8 μg/m3 (8) 12.0
 
April 1, 2020, 10 a.m. 4.8 ppb (4) 0.2 ppb (0) N/A 5.0 ppb (5) N/A N/A 17.0 ppb (13) 0.15 ppb (2) N/A 1.3 μg/m3 (5) 13.0
 
April 1, 2020, 9 a.m. 4.8 ppb (4) 0.2 ppb (0) N/A 5.0 ppb (5) N/A N/A 15.0 ppb (12) 0.14 ppb (2) N/A 1.1 μg/m3 (5) 12.0
 
April 1, 2020, 8 a.m. 4.2 ppb (4) 0.2 ppb (0) N/A 4.0 ppb (4) N/A N/A 19.0 ppb (15) 0.15 ppb (2) N/A 2.0 μg/m3 (8) 15.0
 
April 1, 2020, 7 a.m. 5.0 ppb (5) 0.2 ppb (0) N/A 5.0 ppb (5) N/A N/A 21.0 ppb (16) 0.15 ppb (2) N/A 0.6 μg/m3 (2) 16.0
 
April 1, 2020, 6 a.m. 5.7 ppb (5) 0.2 ppb (0) N/A 6.0 ppb (6) N/A N/A 23.0 ppb (18) 0.17 ppb (2) N/A 1.6 μg/m3 (7) 18.0
 
April 1, 2020, 5 a.m. 5.6 ppb (5) 0.1 ppb (0) N/A 6.0 ppb (6) N/A N/A 32.0 ppb (25) 0.16 ppb (2) N/A 2.5 μg/m3 (10) 25.0
 
April 1, 2020, 4 a.m. 4.1 ppb (4) 0.1 ppb (0) N/A 4.0 ppb (4) N/A N/A 37.0 ppb (28) 0.13 ppb (1) N/A 2.5 μg/m3 (10) 28.0
 
April 1, 2020, 3 a.m. 4.4 ppb (4) 0.2 ppb (0) N/A 4.0 ppb (4) N/A N/A 37.0 ppb (28) 0.14 ppb (2) N/A 2.8 μg/m3 (12) 28.0
 
April 1, 2020, 2 a.m. 2.6 ppb (2) 0.2 ppb (0) N/A 2.0 ppb (2) N/A N/A 39.0 ppb (30) 0.13 ppb (1) N/A 0.1 μg/m3 (0) 30.0