ID: 972

AQSQID: 060376012

Site Name: Santa Clarita

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

Updated: Oct. 19, 2021, 11:03 a.m.

Location: Newhall (Newhall), CA

Reporting: True, Located: True

Current AQI: 56.0

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
Oct. 19, 2021, 9 a.m. 7.6 ppb (8) 0.4 ppb (1) N/A 7.0 ppb (7) N/A N/A 16.0 ppb (15) 0.3 ppb (4) N/A 14.1 μg/m3 (56) 56.0
 
Oct. 19, 2021, 8 a.m. 6.8 ppb (7) 0.4 ppb (1) N/A 6.0 ppb (6) N/A N/A 17.0 ppb (16) 0.31 ppb (4) N/A 15.4 μg/m3 (58) 58.0
 
Oct. 19, 2021, 7 a.m. 8.2 ppb (8) 0.4 ppb (1) N/A 8.0 ppb (8) N/A N/A 18.0 ppb (17) 0.36 ppb (5) N/A 16.5 μg/m3 (61) 61.0
 
Oct. 19, 2021, 6 a.m. 12.0 ppb (12) 0.4 ppb (1) N/A 12.0 ppb (12) N/A N/A 17.0 ppb (16) 0.35 ppb (4) N/A 20.0 μg/m3 (68) 68.0
 
Oct. 19, 2021, 5 a.m. 14.6 ppb (14) 0.5 ppb (1) N/A 14.0 ppb (14) N/A N/A 14.0 ppb (13) 0.37 ppb (5) N/A 17.1 μg/m3 (62) 62.0
 
Oct. 19, 2021, 4 a.m. 13.8 ppb (14) 0.5 ppb (1) N/A 13.0 ppb (13) N/A N/A 19.0 ppb (18) 0.35 ppb (4) N/A 15.8 μg/m3 (59) 59.0
 
Oct. 19, 2021, 3 a.m. 13.2 ppb (13) 0.4 ppb (1) N/A 13.0 ppb (13) N/A N/A 24.0 ppb (23) 0.33 ppb (4) N/A 16.8 μg/m3 (61) 61.0
 
Oct. 19, 2021, 2 a.m. 10.9 ppb (11) 0.4 ppb (1) N/A 11.0 ppb (11) N/A N/A 28.0 ppb (26) 0.31 ppb (4) N/A 17.8 μg/m3 (63) 63.0
 
Oct. 19, 2021, 1 a.m. 10.5 ppb (10) 0.5 ppb (1) N/A 10.0 ppb (10) N/A N/A 30.0 ppb (28) 0.29 ppb (4) N/A 16.1 μg/m3 (60) 60.0
 
Oct. 19, 2021, midnight 8.7 ppb (9) 0.8 ppb (1) N/A 8.0 ppb (8) N/A N/A 33.0 ppb (31) 0.27 ppb (4) N/A 16.3 μg/m3 (60) 60.0
 
Oct. 18, 2021, 11 p.m. 7.3 ppb (7) 0.8 ppb (1) N/A 6.0 ppb (6) N/A N/A 36.0 ppb (34) 0.25 ppb (3) N/A 16.3 μg/m3 (60) 60.0
 
Oct. 18, 2021, 10 p.m. 6.8 ppb (7) 1.0 ppb (1) N/A 6.0 ppb (6) N/A N/A 38.0 ppb (36) 0.23 ppb (3) N/A 17.0 μg/m3 (62) 62.0
 
Oct. 18, 2021, 9 p.m. 5.2 ppb (5) 0.8 ppb (1) N/A 4.0 ppb (4) N/A N/A 41.0 ppb (38) 0.23 ppb (3) N/A 14.0 μg/m3 (55) 55.0
 
Oct. 18, 2021, 8 p.m. 5.5 ppb (6) 1.4 ppb (2) N/A 4.0 ppb (4) N/A N/A 41.0 ppb (38) 0.24 ppb (3) N/A 10.8 μg/m3 (46) 46.0
 
Oct. 18, 2021, 7 p.m. 3.5 ppb (4) 0.8 ppb (1) N/A 3.0 ppb (3) N/A N/A 41.0 ppb (38) 0.22 ppb (3) N/A 14.0 μg/m3 (55) 55.0
 
Oct. 18, 2021, 6 p.m. 3.4 ppb (4) 0.9 ppb (1) N/A 2.0 ppb (2) N/A N/A 39.0 ppb (37) 0.21 ppb (3) N/A 16.8 μg/m3 (61) 61.0
 
Oct. 18, 2021, 5 p.m. 3.6 ppb (4) 1.0 ppb (1) N/A 3.0 ppb (3) N/A N/A 37.0 ppb (35) 0.22 ppb (3) N/A 16.8 μg/m3 (61) 61.0
 
Oct. 18, 2021, 4 p.m. 4.1 ppb (4) 0.9 ppb (1) N/A 3.0 ppb (3) N/A N/A 36.0 ppb (34) 0.21 ppb (3) N/A 14.2 μg/m3 (56) 56.0
 
Oct. 18, 2021, 3 p.m. 6.3 ppb (6) 1.1 ppb (2) N/A 5.0 ppb (5) N/A N/A 34.0 ppb (32) 0.24 ppb (3) N/A 17.1 μg/m3 (62) 62.0
 
Oct. 18, 2021, 2 p.m. 10.9 ppb (11) 1.2 ppb (2) N/A 10.0 ppb (10) N/A N/A 26.0 ppb (25) 0.28 ppb (4) N/A 16.6 μg/m3 (61) 61.0
 
Oct. 18, 2021, 1 p.m. 7.0 ppb (7) 0.7 ppb (1) N/A 6.0 ppb (6) N/A N/A 29.0 ppb (27) 0.24 ppb (3) N/A 17.0 μg/m3 (62) 62.0
 
Oct. 18, 2021, noon 4.7 ppb (5) 0.5 ppb (1) N/A 4.0 ppb (4) N/A N/A 33.0 ppb (31) 0.24 ppb (3) N/A 20.7 μg/m3 (70) 70.0
 
Oct. 18, 2021, 11 a.m. 2.3 ppb (3) 0.3 ppb (1) N/A 2.0 ppb (2) N/A N/A 33.0 ppb (31) 0.2 ppb (3) N/A 15.8 μg/m3 (59) 59.0
 
Oct. 18, 2021, 10 a.m. 2.4 ppb (3) 0.4 ppb (1) N/A 2.0 ppb (2) N/A N/A 34.0 ppb (32) 0.21 ppb (3) N/A 14.5 μg/m3 (57) 57.0
 
Oct. 18, 2021, 9 a.m. 2.3 ppb (3) 0.3 ppb (1) N/A 2.0 ppb (2) N/A N/A 36.0 ppb (34) 0.2 ppb (3) N/A 18.0 μg/m3 (64) 64.0
 
Oct. 18, 2021, 8 a.m. 2.6 ppb (3) 0.4 ppb (1) N/A 2.0 ppb (2) N/A N/A 36.0 ppb (34) 0.22 ppb (3) N/A 22.2 μg/m3 (73) 73.0
 
Oct. 18, 2021, 7 a.m. 4.6 ppb (5) 0.4 ppb (1) N/A 4.0 ppb (4) N/A N/A 32.0 ppb (30) 0.24 ppb (3) N/A 18.5 μg/m3 (65) 65.0
 
Oct. 18, 2021, 6 a.m. 5.3 ppb (5) 0.4 ppb (1) N/A 5.0 ppb (5) N/A N/A 33.0 ppb (31) 0.26 ppb (4) N/A 17.6 μg/m3 (63) 63.0
 
Oct. 18, 2021, 5 a.m. 8.7 ppb (9) 0.5 ppb (1) N/A 8.0 ppb (8) N/A N/A 36.0 ppb (34) 0.3 ppb (4) N/A 27.4 μg/m3 (84) 84.0
 
Oct. 18, 2021, 4 a.m. 10.9 ppb (11) 0.4 ppb (1) N/A 11.0 ppb (11) N/A N/A 40.0 ppb (38) 0.36 ppb (5) N/A 22.5 μg/m3 (73) 73.0
 
Oct. 18, 2021, 3 a.m. 9.6 ppb (10) 0.4 ppb (1) N/A 9.0 ppb (9) N/A N/A 46.0 ppb (43) 0.34 ppb (4) N/A 19.8 μg/m3 (68) 68.0
 
Oct. 18, 2021, 2 a.m. 9.2 ppb (9) 0.6 ppb (1) N/A 9.0 ppb (9) N/A N/A 47.0 ppb (44) 0.35 ppb (4) N/A 21.0 μg/m3 (70) 70.0
 
Oct. 18, 2021, 1 a.m. 5.8 ppb (6) 0.3 ppb (1) N/A 6.0 ppb (6) N/A N/A 53.0 ppb (50) 0.3 ppb (4) N/A 16.1 μg/m3 (60) 60.0
 
Oct. 18, 2021, midnight 5.9 ppb (6) 0.4 ppb (1) N/A 6.0 ppb (6) N/A N/A 56.0 ppb (55) 0.29 ppb (4) N/A 14.5 μg/m3 (57) 57.0
 
Oct. 17, 2021, 11 p.m. 2.8 ppb (3) 0.4 ppb (1) N/A 2.0 ppb (2) N/A N/A 55.0 ppb (51) 0.24 ppb (3) N/A 13.9 μg/m3 (55) 55.0
 
Oct. 17, 2021, 10 p.m. 3.8 ppb (4) 0.7 ppb (1) N/A 3.0 ppb (3) N/A N/A 58.0 ppb (61) 0.26 ppb (4) N/A 17.5 μg/m3 (63) 63.0
 
Oct. 17, 2021, 9 p.m. 5.2 ppb (5) 0.8 ppb (1) N/A 4.0 ppb (4) N/A N/A 64.0 ppb (81) 0.3 ppb (4) N/A 20.0 μg/m3 (68) 81.0
 
Oct. 17, 2021, 8 p.m. 7.5 ppb (8) 1.2 ppb (2) N/A 6.0 ppb (6) N/A N/A 61.0 ppb (71) 0.33 ppb (4) N/A 17.6 μg/m3 (63) 71.0
 
Oct. 17, 2021, 7 p.m. 6.1 ppb (6) 1.2 ppb (2) N/A 5.0 ppb (5) N/A N/A 57.0 ppb (58) 0.31 ppb (4) N/A 18.1 μg/m3 (64) 64.0
 
Oct. 17, 2021, 6 p.m. 7.2 ppb (7) 1.5 ppb (2) N/A 6.0 ppb (6) N/A N/A 52.0 ppb (49) 0.3 ppb (4) N/A 13.0 μg/m3 (53) 53.0
 
Oct. 17, 2021, 5 p.m. 9.9 ppb (10) 2.5 ppb (3) N/A 7.0 ppb (7) N/A N/A 41.0 ppb (38) 0.36 ppb (5) N/A 15.4 μg/m3 (58) 58.0
 
Oct. 17, 2021, 4 p.m. 15.3 ppb (15) 4.7 ppb (5) N/A 11.0 ppb (11) N/A N/A 28.0 ppb (26) 0.51 ppb (6) N/A 17.5 μg/m3 (63) 63.0
 
Oct. 17, 2021, 3 p.m. 17.0 ppb (17) 4.7 ppb (5) N/A 12.0 ppb (12) N/A N/A 18.0 ppb (17) 0.53 ppb (6) N/A 18.7 μg/m3 (65) 65.0
 
Oct. 17, 2021, 2 p.m. 13.1 ppb (13) 1.4 ppb (2) N/A 12.0 ppb (12) N/A N/A 13.0 ppb (13) 0.48 ppb (6) N/A 21.1 μg/m3 (70) 70.0
 
Oct. 17, 2021, 1 p.m. 9.5 ppb (9) 0.3 ppb (1) N/A 9.0 ppb (9) N/A N/A 16.0 ppb (15) 0.42 ppb (5) N/A 18.2 μg/m3 (64) 64.0
 
Oct. 17, 2021, noon 8.2 ppb (8) 0.4 ppb (1) N/A 8.0 ppb (8) N/A N/A 17.0 ppb (16) 0.41 ppb (5) N/A 18.0 μg/m3 (64) 64.0
 
Oct. 17, 2021, 11 a.m. 10.7 ppb (11) 0.4 ppb (1) N/A 10.0 ppb (10) N/A N/A 15.0 ppb (14) 0.47 ppb (6) N/A 18.0 μg/m3 (64) 64.0
 
Oct. 17, 2021, 10 a.m. 10.3 ppb (10) 0.4 ppb (1) N/A 10.0 ppb (10) N/A N/A 19.0 ppb (18) 0.47 ppb (6) N/A 21.4 μg/m3 (71) 71.0
 
Oct. 17, 2021, 9 a.m. 11.5 ppb (11) 0.5 ppb (1) N/A 11.0 ppb (11) N/A N/A 17.0 ppb (16) 0.48 ppb (6) N/A 21.9 μg/m3 (72) 72.0
 
Oct. 17, 2021, 8 a.m. 11.6 ppb (11) 0.5 ppb (1) N/A 11.0 ppb (11) N/A N/A 18.0 ppb (17) 0.5 ppb (6) N/A 20.0 μg/m3 (68) 68.0
 
Oct. 17, 2021, 7 a.m. 13.3 ppb (13) 0.3 ppb (1) N/A 13.0 ppb (13) N/A N/A 21.0 ppb (20) 0.52 ppb (6) N/A 22.9 μg/m3 (74) 74.0
 
Oct. 17, 2021, 6 a.m. 16.6 ppb (16) 0.4 ppb (1) N/A 16.0 ppb (16) N/A N/A 18.0 ppb (17) 0.53 ppb (6) N/A 20.5 μg/m3 (69) 69.0
 
Oct. 17, 2021, 5 a.m. 18.8 ppb (18) 0.4 ppb (1) N/A 18.0 ppb (17) N/A N/A 16.0 ppb (15) 0.6 ppb (7) N/A 25.7 μg/m3 (80) 80.0
 
Oct. 17, 2021, 4 a.m. 15.6 ppb (15) 0.3 ppb (1) N/A 15.0 ppb (15) N/A N/A 24.0 ppb (23) 0.58 ppb (7) N/A 18.8 μg/m3 (66) 66.0
 
Oct. 17, 2021, 3 a.m. 17.2 ppb (17) 0.2 ppb (1) N/A 17.0 ppb (17) N/A N/A 26.0 ppb (25) 0.54 ppb (6) N/A 20.0 μg/m3 (68) 68.0
 
Oct. 17, 2021, 2 a.m. 11.4 ppb (11) 0.3 ppb (1) N/A 11.0 ppb (11) N/A N/A 34.0 ppb (32) 0.44 ppb (5) N/A 22.7 μg/m3 (74) 74.0
 
Oct. 17, 2021, 1 a.m. 9.2 ppb (9) 0.4 ppb (1) N/A 9.0 ppb (9) N/A N/A 47.0 ppb (44) 0.35 ppb (4) N/A 15.8 μg/m3 (59) 59.0
 
Oct. 17, 2021, midnight 2.9 ppb (3) 0.3 ppb (1) N/A 3.0 ppb (3) N/A N/A 53.0 ppb (50) 0.27 ppb (4) N/A 16.1 μg/m3 (60) 60.0
 
Oct. 16, 2021, 11 p.m. 1.9 ppb (2) 0.4 ppb (1) N/A 1.0 ppb (1) N/A N/A 54.0 ppb (50) 0.25 ppb (3) N/A 18.3 μg/m3 (65) 65.0
 
Oct. 16, 2021, 10 p.m. 2.2 ppb (3) 0.4 ppb (1) N/A 2.0 ppb (2) N/A N/A 54.0 ppb (50) 0.25 ppb (3) N/A 16.1 μg/m3 (60) 60.0
 
Oct. 16, 2021, 9 p.m. 1.7 ppb (2) 0.4 ppb (1) N/A 1.0 ppb (1) N/A N/A 51.0 ppb (48) 0.24 ppb (3) N/A 13.7 μg/m3 (55) 55.0
 
Oct. 16, 2021, 8 p.m. 1.8 ppb (2) 0.4 ppb (1) N/A 1.0 ppb (1) N/A N/A 48.0 ppb (45) 0.24 ppb (3) N/A 11.0 μg/m3 (46) 46.0
 
Oct. 16, 2021, 7 p.m. 2.0 ppb (2) 0.5 ppb (1) N/A 1.0 ppb (1) N/A N/A 46.0 ppb (43) 0.23 ppb (3) N/A 13.7 μg/m3 (55) 55.0
 
Oct. 16, 2021, 6 p.m. 1.7 ppb (2) 0.5 ppb (1) N/A 1.0 ppb (1) N/A N/A 46.0 ppb (43) 0.23 ppb (3) N/A 16.1 μg/m3 (60) 60.0
 
Oct. 16, 2021, 5 p.m. 1.9 ppb (2) 0.5 ppb (1) N/A 1.0 ppb (1) N/A N/A 45.0 ppb (42) 0.23 ppb (3) N/A 15.1 μg/m3 (58) 58.0
 
Oct. 16, 2021, 4 p.m. 11.9 ppb (12) 3.1 ppb (3) N/A 9.0 ppb (9) N/A N/A 33.0 ppb (31) 0.34 ppb (4) N/A 14.7 μg/m3 (57) 57.0
 
Oct. 16, 2021, 3 p.m. 23.3 ppb (22) 6.4 ppb (7) N/A 17.0 ppb (17) N/A N/A 21.0 ppb (20) 0.54 ppb (6) N/A 18.0 μg/m3 (64) 64.0
 
Oct. 16, 2021, 2 p.m. 29.3 ppb (28) 6.2 ppb (6) N/A 23.0 ppb (22) N/A N/A 12.0 ppb (12) 0.57 ppb (7) N/A 20.5 μg/m3 (69) 69.0
 
Oct. 16, 2021, 1 p.m. 16.6 ppb (16) 1.3 ppb (2) N/A 15.0 ppb (15) N/A N/A 17.0 ppb (16) 0.41 ppb (5) N/A 15.2 μg/m3 (58) 58.0
 
Oct. 16, 2021, noon 10.1 ppb (10) 0.4 ppb (1) N/A 10.0 ppb (10) N/A N/A 18.0 ppb (17) 0.34 ppb (4) N/A 16.1 μg/m3 (60) 60.0
 
Oct. 16, 2021, 11 a.m. 8.0 ppb (8) 0.3 ppb (1) N/A 8.0 ppb (8) N/A N/A 20.0 ppb (19) 0.32 ppb (4) N/A 17.0 μg/m3 (62) 62.0
 
Oct. 16, 2021, 10 a.m. 6.8 ppb (7) 0.3 ppb (1) N/A 7.0 ppb (7) N/A N/A 22.0 ppb (21) 0.29 ppb (4) N/A 15.6 μg/m3 (59) 59.0
 
Oct. 16, 2021, 9 a.m. 7.0 ppb (7) 0.2 ppb (1) N/A 7.0 ppb (7) N/A N/A 30.0 ppb (28) 0.27 ppb (4) N/A 14.5 μg/m3 (57) 57.0
 
Oct. 16, 2021, 8 a.m. 4.5 ppb (5) 0.3 ppb (1) N/A 4.0 ppb (4) N/A N/A 34.0 ppb (32) 0.25 ppb (3) N/A 17.5 μg/m3 (63) 63.0
 
Oct. 16, 2021, 7 a.m. 3.6 ppb (4) 0.3 ppb (1) N/A 3.0 ppb (3) N/A N/A 37.0 ppb (35) 0.25 ppb (3) N/A 19.8 μg/m3 (68) 68.0
 
Oct. 16, 2021, 6 a.m. 1.6 ppb (2) 0.2 ppb (1) N/A 1.0 ppb (1) N/A N/A 42.0 ppb (39) 0.23 ppb (3) N/A 14.9 μg/m3 (57) 57.0
 
Oct. 16, 2021, 5 a.m. 2.3 ppb (3) 0.2 ppb (1) N/A 2.0 ppb (2) N/A N/A 42.0 ppb (39) 0.24 ppb (3) N/A 15.1 μg/m3 (58) 58.0
 
Oct. 16, 2021, 4 a.m. 2.9 ppb (3) 0.2 ppb (1) N/A 3.0 ppb (3) N/A N/A 40.0 ppb (38) 0.25 ppb (3) N/A 16.8 μg/m3 (61) 61.0
 
Oct. 16, 2021, 3 a.m. 2.4 ppb (3) 0.1 ppb (1) N/A 2.0 ppb (2) N/A N/A 41.0 ppb (38) 0.24 ppb (3) N/A 15.3 μg/m3 (58) 58.0
 
Oct. 16, 2021, 2 a.m. 1.7 ppb (2) 0.2 ppb (1) N/A 2.0 ppb (2) N/A N/A 43.0 ppb (40) 0.24 ppb (3) N/A 10.8 μg/m3 (46) 46.0
 
Oct. 16, 2021, 1 a.m. 1.5 ppb (2) 0.3 ppb (1) N/A 1.0 ppb (1) N/A N/A 44.0 ppb (41) 0.25 ppb (3) N/A 13.5 μg/m3 (54) 54.0
 
Oct. 16, 2021, midnight 1.5 ppb (2) 0.3 ppb (1) N/A 1.0 ppb (1) N/A N/A 46.0 ppb (43) 0.27 ppb (4) N/A 15.8 μg/m3 (59) 59.0
 
Oct. 15, 2021, 11 p.m. 1.5 ppb (2) 0.5 ppb (1) N/A 1.0 ppb (1) N/A N/A 45.0 ppb (42) 0.29 ppb (4) N/A 15.6 μg/m3 (59) 59.0
 
Oct. 15, 2021, 10 p.m. 1.4 ppb (2) 0.4 ppb (1) N/A 1.0 ppb (1) N/A N/A 45.0 ppb (42) 0.25 ppb (3) N/A 14.2 μg/m3 (56) 56.0
 
Oct. 15, 2021, 9 p.m. 1.5 ppb (2) 0.5 ppb (1) N/A 1.0 ppb (1) N/A N/A 44.0 ppb (41) 0.26 ppb (4) N/A 14.5 μg/m3 (57) 57.0
 
Oct. 15, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 13.0 μg/m3 (53) 53.0
 
Oct. 15, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 13.5 μg/m3 (54) 54.0
 
Oct. 15, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 13.2 μg/m3 (54) 54.0
 
Oct. 15, 2021, 5 p.m. 2.4 ppb (3) 0.7 ppb (1) N/A 2.0 ppb (2) N/A N/A 39.0 ppb (37) 0.2 ppb (3) N/A 14.4 μg/m3 (56) 56.0
 
Oct. 15, 2021, 4 p.m. 6.1 ppb (6) 1.8 ppb (2) N/A 4.0 ppb (4) N/A N/A 33.0 ppb (31) 0.26 ppb (4) N/A 13.2 μg/m3 (54) 54.0
 
Oct. 15, 2021, 3 p.m. 15.7 ppb (15) 4.6 ppb (5) N/A 11.0 ppb (11) N/A N/A 23.0 ppb (22) 0.37 ppb (5) N/A 15.6 μg/m3 (59) 59.0
 
Oct. 15, 2021, 2 p.m. 53.3 ppb (51) 30.7 ppb (29) N/A 23.0 ppb (22) N/A N/A 6.0 ppb (6) 0.72 ppb (8) N/A 19.2 μg/m3 (66) 66.0
 
Oct. 15, 2021, 1 p.m. 33.3 ppb (32) 12.4 ppb (12) N/A 21.0 ppb (20) N/A N/A 1.0 ppb (1) 0.52 ppb (6) N/A 17.7 μg/m3 (63) 63.0
 
Oct. 15, 2021, noon 20.9 ppb (20) 4.7 ppb (5) N/A 16.0 ppb (16) N/A N/A 6.0 ppb (6) 0.41 ppb (5) N/A 15.8 μg/m3 (59) 59.0
 
Oct. 15, 2021, 11 a.m. 7.6 ppb (8) 0.3 ppb (1) N/A 7.0 ppb (7) N/A N/A 18.0 ppb (17) 0.3 ppb (4) N/A 16.5 μg/m3 (61) 61.0
 
Oct. 15, 2021, 10 a.m. 8.3 ppb (8) 0.4 ppb (1) N/A 8.0 ppb (8) N/A N/A 19.0 ppb (18) 0.3 ppb (4) N/A 16.8 μg/m3 (61) 61.0
 
Oct. 15, 2021, 9 a.m. 8.1 ppb (8) 0.3 ppb (1) N/A 8.0 ppb (8) N/A N/A 20.0 ppb (19) 0.31 ppb (4) N/A 17.5 μg/m3 (63) 63.0
 
Oct. 15, 2021, 8 a.m. 9.2 ppb (9) 0.4 ppb (1) N/A 9.0 ppb (9) N/A N/A 19.0 ppb (18) 0.33 ppb (4) N/A 20.2 μg/m3 (69) 69.0
 
Oct. 15, 2021, 7 a.m. 14.0 ppb (14) 0.4 ppb (1) N/A 14.0 ppb (14) N/A N/A 15.0 ppb (14) 0.41 ppb (5) N/A 16.5 μg/m3 (61) 61.0
 
Oct. 15, 2021, 6 a.m. 18.1 ppb (18) 0.4 ppb (1) N/A 18.0 ppb (17) N/A N/A 13.0 ppb (13) 0.46 ppb (6) N/A 19.0 μg/m3 (66) 66.0
 
Oct. 15, 2021, 5 a.m. 21.6 ppb (21) 0.4 ppb (1) N/A 21.0 ppb (20) N/A N/A 12.0 ppb (12) 0.46 ppb (6) N/A 21.7 μg/m3 (72) 72.0
 
Oct. 15, 2021, 4 a.m. 21.4 ppb (21) 0.5 ppb (1) N/A 21.0 ppb (20) N/A N/A 14.0 ppb (13) 0.46 ppb (6) N/A 22.4 μg/m3 (73) 73.0
 
Oct. 15, 2021, 3 a.m. 19.7 ppb (19) 0.4 ppb (1) N/A 19.0 ppb (18) N/A N/A 16.0 ppb (15) 0.47 ppb (6) N/A 21.7 μg/m3 (72) 72.0
 
Oct. 15, 2021, 2 a.m. 6.0 ppb (6) 0.2 ppb (1) N/A 6.0 ppb (6) N/A N/A 34.0 ppb (32) 0.31 ppb (4) N/A 19.7 μg/m3 (67) 67.0
 
Oct. 15, 2021, 1 a.m. 2.7 ppb (3) 0.2 ppb (1) N/A 2.0 ppb (2) N/A N/A 46.0 ppb (43) 0.25 ppb (3) N/A 17.8 μg/m3 (63) 63.0
 
Oct. 15, 2021, midnight 2.0 ppb (2) 0.3 ppb (1) N/A 2.0 ppb (2) N/A N/A 51.0 ppb (48) 0.25 ppb (3) N/A 16.1 μg/m3 (60) 60.0
 
Oct. 14, 2021, 11 p.m. 2.2 ppb (3) 0.5 ppb (1) N/A 2.0 ppb (2) N/A N/A 52.0 ppb (49) 0.29 ppb (4) N/A 17.0 μg/m3 (62) 62.0
 
Oct. 14, 2021, 10 p.m. 2.1 ppb (2) 0.4 ppb (1) N/A 2.0 ppb (2) N/A N/A 51.0 ppb (48) 0.27 ppb (4) N/A 18.3 μg/m3 (65) 65.0
 
Oct. 14, 2021, 9 p.m. 2.2 ppb (3) 0.4 ppb (1) N/A 2.0 ppb (2) N/A N/A 52.0 ppb (49) 0.27 ppb (4) N/A 19.0 μg/m3 (66) 66.0
 
Oct. 14, 2021, 8 p.m. 3.2 ppb (4) 0.8 ppb (1) N/A 2.0 ppb (2) N/A N/A 53.0 ppb (50) 0.27 ppb (4) N/A 16.8 μg/m3 (61) 61.0
 
Oct. 14, 2021, 7 p.m. 3.1 ppb (3) 0.6 ppb (1) N/A 2.0 ppb (2) N/A N/A 49.0 ppb (46) 0.25 ppb (3) N/A 11.3 μg/m3 (48) 48.0
 
Oct. 14, 2021, 6 p.m. 3.9 ppb (4) 0.9 ppb (1) N/A 3.0 ppb (3) N/A N/A 44.0 ppb (41) 0.24 ppb (3) N/A 12.5 μg/m3 (52) 52.0
 
Oct. 14, 2021, 5 p.m. 7.8 ppb (8) 2.1 ppb (2) N/A 6.0 ppb (6) N/A N/A 39.0 ppb (37) 0.27 ppb (4) N/A 16.6 μg/m3 (61) 61.0
 
Oct. 14, 2021, 4 p.m. 32.9 ppb (32) 13.1 ppb (13) N/A 20.0 ppb (19) N/A N/A 22.0 ppb (21) 0.49 ppb (6) N/A 20.5 μg/m3 (69) 69.0
 
Oct. 14, 2021, 3 p.m. 63.4 ppb (62) 35.7 ppb (34) N/A 28.0 ppb (27) N/A N/A 9.0 ppb (9) 0.74 ppb (8) N/A 24.6 μg/m3 (78) 78.0
 
Oct. 14, 2021, 2 p.m. 48.1 ppb (46) 22.2 ppb (21) N/A 26.0 ppb (25) N/A N/A 3.0 ppb (3) 0.7 ppb (8) N/A 20.7 μg/m3 (70) 70.0
 
Oct. 14, 2021, 1 p.m. 29.4 ppb (28) 5.1 ppb (5) N/A 24.0 ppb (23) N/A N/A 3.0 ppb (3) 0.53 ppb (6) N/A 22.1 μg/m3 (73) 73.0
 
Oct. 14, 2021, noon 14.6 ppb (14) 1.4 ppb (2) N/A 13.0 ppb (13) N/A N/A 13.0 ppb (13) 0.41 ppb (5) N/A 17.5 μg/m3 (63) 63.0
 
Oct. 14, 2021, 11 a.m. 10.5 ppb (10) 0.3 ppb (1) N/A 10.0 ppb (10) N/A N/A 19.0 ppb (18) 0.37 ppb (5) N/A 16.1 μg/m3 (60) 60.0
 
Oct. 14, 2021, 10 a.m. 12.4 ppb (12) 0.4 ppb (1) N/A 12.0 ppb (12) N/A N/A 16.0 ppb (15) 0.36 ppb (5) N/A 17.2 μg/m3 (62) 62.0
 
Oct. 14, 2021, 9 a.m. 8.9 ppb (9) 0.3 ppb (1) N/A 9.0 ppb (9) N/A N/A 20.0 ppb (19) 0.36 ppb (5) N/A 16.5 μg/m3 (61) 61.0
 
Oct. 14, 2021, 8 a.m. 10.1 ppb (10) 0.4 ppb (1) N/A 10.0 ppb (10) N/A N/A 20.0 ppb (19) 0.39 ppb (5) N/A 20.0 μg/m3 (68) 68.0
 
Oct. 14, 2021, 7 a.m. 13.1 ppb (13) 0.3 ppb (1) N/A 13.0 ppb (13) N/A N/A 18.0 ppb (17) 0.43 ppb (5) N/A 20.2 μg/m3 (69) 69.0
 
Oct. 14, 2021, 6 a.m. 14.2 ppb (14) 0.4 ppb (1) N/A 14.0 ppb (14) N/A N/A 16.0 ppb (15) 0.46 ppb (6) N/A 20.7 μg/m3 (70) 70.0
 
Oct. 14, 2021, 5 a.m. 20.8 ppb (20) 0.4 ppb (1) N/A 20.0 ppb (19) N/A N/A 12.0 ppb (12) 0.52 ppb (6) N/A 21.5 μg/m3 (71) 71.0
 
Oct. 14, 2021, 4 a.m. 21.5 ppb (21) 0.5 ppb (1) N/A 21.0 ppb (20) N/A N/A 13.0 ppb (13) 0.5 ppb (6) N/A 21.7 μg/m3 (72) 72.0
 
Oct. 14, 2021, 3 a.m. 16.6 ppb (16) 0.7 ppb (1) N/A 16.0 ppb (16) N/A N/A 20.0 ppb (19) 0.43 ppb (5) N/A 16.3 μg/m3 (60) 60.0
 
Oct. 14, 2021, 2 a.m. 8.7 ppb (9) 0.2 ppb (1) N/A 8.0 ppb (8) N/A N/A 32.0 ppb (30) 0.35 ppb (4) N/A 17.1 μg/m3 (62) 62.0
 
Oct. 14, 2021, 1 a.m. 6.5 ppb (7) 0.3 ppb (1) N/A 6.0 ppb (6) N/A N/A 41.0 ppb (38) 0.32 ppb (4) N/A 17.1 μg/m3 (62) 62.0
 
Oct. 14, 2021, midnight 4.9 ppb (5) 0.6 ppb (1) N/A 4.0 ppb (4) N/A N/A 47.0 ppb (44) 0.31 ppb (4) N/A 18.1 μg/m3 (64) 64.0
 
Oct. 13, 2021, 11 p.m. 3.4 ppb (4) 0.6 ppb (1) N/A 3.0 ppb (3) N/A N/A 51.0 ppb (48) 0.29 ppb (4) N/A 18.3 μg/m3 (65) 65.0
 
Oct. 13, 2021, 10 p.m. 4.5 ppb (5) 0.8 ppb (1) N/A 4.0 ppb (4) N/A N/A 53.0 ppb (50) 0.3 ppb (4) N/A 15.1 μg/m3 (58) 58.0
 
Oct. 13, 2021, 9 p.m. 6.2 ppb (6) 1.3 ppb (2) N/A 5.0 ppb (5) N/A N/A 49.0 ppb (46) 0.31 ppb (4) N/A 12.8 μg/m3 (53) 53.0
 
Oct. 13, 2021, 8 p.m. 6.3 ppb (6) 1.5 ppb (2) N/A 5.0 ppb (5) N/A N/A 45.0 ppb (42) 0.31 ppb (4) N/A 11.3 μg/m3 (48) 48.0
 
Oct. 13, 2021, 7 p.m. 8.9 ppb (9) 2.4 ppb (3) N/A 7.0 ppb (7) N/A N/A 41.0 ppb (38) 0.33 ppb (4) N/A 13.0 μg/m3 (53) 53.0
 
Oct. 13, 2021, 6 p.m. 5.5 ppb (6) 1.5 ppb (2) N/A 4.0 ppb (4) N/A N/A 42.0 ppb (39) 0.27 ppb (4) N/A 15.1 μg/m3 (58) 58.0
 
Oct. 13, 2021, 5 p.m. 7.7 ppb (8) 2.2 ppb (3) N/A 6.0 ppb (6) N/A N/A 37.0 ppb (35) 0.29 ppb (4) N/A 13.6 μg/m3 (55) 55.0
 
Oct. 13, 2021, 4 p.m. 15.6 ppb (15) 5.3 ppb (5) N/A 10.0 ppb (10) N/A N/A 28.0 ppb (26) 0.37 ppb (5) N/A 15.6 μg/m3 (59) 59.0
 
Oct. 13, 2021, 3 p.m. 32.5 ppb (31) 14.0 ppb (14) N/A 19.0 ppb (18) N/A N/A 14.0 ppb (13) 0.51 ppb (6) N/A 19.0 μg/m3 (66) 66.0
 
Oct. 13, 2021, 2 p.m. 53.5 ppb (51) 27.8 ppb (27) N/A 26.0 ppb (25) N/A N/A 2.0 ppb (2) 0.73 ppb (8) N/A 16.1 μg/m3 (60) 60.0
 
Oct. 13, 2021, 1 p.m. 23.1 ppb (22) 3.3 ppb (4) N/A 20.0 ppb (19) N/A N/A 5.0 ppb (5) 0.46 ppb (6) N/A 15.9 μg/m3 (59) 59.0
 
Oct. 13, 2021, noon 14.1 ppb (14) 0.6 ppb (1) N/A 14.0 ppb (14) N/A N/A 9.0 ppb (9) 0.38 ppb (5) N/A 15.4 μg/m3 (58) 58.0
 
Oct. 13, 2021, 11 a.m. 10.3 ppb (10) 0.4 ppb (1) N/A 10.0 ppb (10) N/A N/A 13.0 ppb (13) 0.33 ppb (4) N/A 12.7 μg/m3 (53) 53.0
 
Oct. 13, 2021, 10 a.m. 9.5 ppb (9) 0.3 ppb (1) N/A 9.0 ppb (9) N/A N/A 15.0 ppb (14) 0.31 ppb (4) N/A 17.2 μg/m3 (62) 62.0
 
Oct. 13, 2021, 9 a.m. 10.2 ppb (10) 0.3 ppb (1) N/A 10.0 ppb (10) N/A N/A 14.0 ppb (13) 0.33 ppb (4) N/A 21.7 μg/m3 (72) 72.0
 
Oct. 13, 2021, 8 a.m. 9.6 ppb (10) 0.3 ppb (1) N/A 9.0 ppb (9) N/A N/A 16.0 ppb (15) 0.33 ppb (4) N/A 13.7 μg/m3 (55) 55.0
 
Oct. 13, 2021, 7 a.m. 9.6 ppb (10) 0.3 ppb (1) N/A 9.0 ppb (9) N/A N/A 18.0 ppb (17) 0.34 ppb (4) N/A 17.5 μg/m3 (63) 63.0
 
Oct. 13, 2021, 6 a.m. 11.1 ppb (11) 0.4 ppb (1) N/A 11.0 ppb (11) N/A N/A 17.0 ppb (16) 0.36 ppb (5) N/A 19.3 μg/m3 (67) 67.0
 
Oct. 13, 2021, 5 a.m. 10.7 ppb (11) 0.3 ppb (1) N/A 10.0 ppb (10) N/A N/A 23.0 ppb (22) 0.32 ppb (4) N/A 17.3 μg/m3 (62) 62.0
 
Oct. 13, 2021, 4 a.m. 7.6 ppb (8) 0.5 ppb (1) N/A 7.0 ppb (7) N/A N/A 33.0 ppb (31) 0.28 ppb (4) N/A 18.8 μg/m3 (66) 66.0
 
Oct. 13, 2021, 3 a.m. 6.7 ppb (7) 0.4 ppb (1) N/A 6.0 ppb (6) N/A N/A 35.0 ppb (33) 0.26 ppb (4) N/A 18.3 μg/m3 (65) 65.0
 
Oct. 13, 2021, 2 a.m. 4.7 ppb (5) 0.4 ppb (1) N/A 4.0 ppb (4) N/A N/A 38.0 ppb (36) 0.25 ppb (3) N/A 21.0 μg/m3 (70) 70.0
 
Oct. 13, 2021, 1 a.m. 5.8 ppb (6) 0.5 ppb (1) N/A 5.0 ppb (5) N/A N/A 40.0 ppb (38) 0.28 ppb (4) N/A 17.9 μg/m3 (64) 64.0
 
Oct. 13, 2021, midnight 4.6 ppb (5) 0.8 ppb (1) N/A 4.0 ppb (4) N/A N/A 42.0 ppb (39) 0.28 ppb (4) N/A 14.7 μg/m3 (57) 57.0
 
Oct. 12, 2021, 11 p.m. 3.2 ppb (4) 0.9 ppb (1) N/A 2.0 ppb (2) N/A N/A 43.0 ppb (40) 0.26 ppb (4) N/A 12.0 μg/m3 (50) 50.0
 
Oct. 12, 2021, 10 p.m. 2.1 ppb (2) 0.6 ppb (1) N/A 1.0 ppb (1) N/A N/A 43.0 ppb (40) 0.24 ppb (3) N/A 14.5 μg/m3 (57) 57.0
 
Oct. 12, 2021, 9 p.m. 4.7 ppb (5) 1.8 ppb (2) N/A 3.0 ppb (3) N/A N/A 41.0 ppb (38) 0.25 ppb (3) N/A 15.1 μg/m3 (58) 58.0
 
Oct. 12, 2021, 8 p.m. 2.6 ppb (3) 0.8 ppb (1) N/A 2.0 ppb (2) N/A N/A 41.0 ppb (38) 0.23 ppb (3) N/A 13.5 μg/m3 (54) 54.0
 
Oct. 12, 2021, 7 p.m. 2.1 ppb (2) 0.9 ppb (1) N/A 1.0 ppb (1) N/A N/A 40.0 ppb (38) 0.23 ppb (3) N/A 11.1 μg/m3 (47) 47.0
 
Oct. 12, 2021, 6 p.m. 1.6 ppb (2) 0.7 ppb (1) N/A 1.0 ppb (1) N/A N/A 38.0 ppb (36) 0.22 ppb (3) N/A 11.8 μg/m3 (50) 50.0
 
Oct. 12, 2021, 5 p.m. 1.7 ppb (2) 0.8 ppb (1) N/A 1.0 ppb (1) N/A N/A 36.0 ppb (34) 0.23 ppb (3) N/A 14.2 μg/m3 (56) 56.0
 
Oct. 12, 2021, 4 p.m. 2.4 ppb (3) 1.2 ppb (2) N/A 1.0 ppb (1) N/A N/A 34.0 ppb (32) 0.24 ppb (3) N/A 16.3 μg/m3 (60) 60.0
 
Oct. 12, 2021, 3 p.m. 4.2 ppb (4) 1.7 ppb (2) N/A 3.0 ppb (3) N/A N/A 33.0 ppb (31) 0.26 ppb (4) N/A 19.2 μg/m3 (66) 66.0
 
Oct. 12, 2021, 2 p.m. 1.6 ppb (2) 0.4 ppb (1) N/A 1.0 ppb (1) N/A N/A 33.0 ppb (31) 0.26 ppb (4) N/A 20.0 μg/m3 (68) 68.0
 
Oct. 12, 2021, 1 p.m. 2.3 ppb (3) 0.7 ppb (1) N/A 2.0 ppb (2) N/A N/A 33.0 ppb (31) 0.25 ppb (3) N/A 18.0 μg/m3 (64) 64.0
 
Oct. 12, 2021, noon 1.1 ppb (2) 0.3 ppb (1) N/A 1.0 ppb (1) N/A N/A 34.0 ppb (32) 0.25 ppb (3) N/A 18.8 μg/m3 (66) 66.0
 
Oct. 12, 2021, 11 a.m. 0.7 ppb (1) 0.1 ppb (1) N/A 1.0 ppb (1) N/A N/A 35.0 ppb (33) 0.24 ppb (3) N/A 18.5 μg/m3 (65) 65.0
 
Oct. 12, 2021, 10 a.m. 0.8 ppb (1) 0.2 ppb (1) N/A 1.0 ppb (1) N/A N/A 35.0 ppb (33) 0.24 ppb (3) N/A 19.3 μg/m3 (67) 67.0