AQSQID: 060831008

Site Name: Santa Maria - Broadway

Location: Santa Maria (S McClelland St), CA

Reporting: True, Located: True

Current AQI: 46.0

Santa Maria (S McClelland St) CA, US: 34.9481, -120.4344

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
April 13, 2019, 3 a.m. 5.2 ppb (5) 1.3 ppb (1) N/A 4.0 ppb (4) N/A N/A 33.0 ppb (25) 0.15 ppb (2) 31.0 μg/m3 (28) 10.0 μg/m3 (42) 42.0
 
April 13, 2019, 2 a.m. 5.1 ppb (5) 2.1 ppb (2) N/A 3.0 ppb (3) N/A N/A 35.0 ppb (27) 0.14 ppb (2) 34.0 μg/m3 (31) 10.0 μg/m3 (42) 42.0
 
April 13, 2019, 1 a.m. 5.1 ppb (5) 2.2 ppb (2) N/A 3.0 ppb (3) N/A N/A 38.0 ppb (29) 0.13 ppb (1) 38.0 μg/m3 (35) 11.0 μg/m3 (46) 46.0
 
April 13, 2019, midnight 5.5 ppb (5) 2.6 ppb (2) N/A 3.0 ppb (3) N/A N/A 38.0 ppb (29) 0.14 ppb (2) 56.0 μg/m3 (50) 14.0 μg/m3 (54) 54.0
 
April 12, 2019, 11 p.m. 6.4 ppb (6) 2.7 ppb (3) N/A 4.0 ppb (4) N/A N/A 37.0 ppb (28) 0.14 ppb (2) 53.0 μg/m3 (48) 9.0 μg/m3 (38) 48.0
 
April 12, 2019, 10 p.m. 5.9 ppb (5) 2.7 ppb (3) N/A 3.0 ppb (3) N/A N/A 38.0 ppb (29) 0.14 ppb (2) 53.0 μg/m3 (48) 9.0 μg/m3 (38) 48.0
 
April 12, 2019, 9 p.m. 6.4 ppb (6) 3.1 ppb (3) N/A 3.0 ppb (3) N/A N/A 37.0 ppb (28) 0.13 ppb (1) 45.0 μg/m3 (41) 11.0 μg/m3 (46) 46.0
 
April 12, 2019, 8 p.m. 6.2 ppb (6) 2.8 ppb (3) N/A 3.0 ppb (3) N/A N/A 36.0 ppb (28) 0.13 ppb (1) 34.0 μg/m3 (31) 9.0 μg/m3 (38) 38.0
 
April 12, 2019, 7 p.m. 5.6 ppb (5) 2.6 ppb (2) N/A 3.0 ppb (3) N/A N/A 34.0 ppb (26) 0.13 ppb (1) 34.0 μg/m3 (31) 9.0 μg/m3 (38) 38.0
 
April 12, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 27.0 μg/m3 (25) 8.0 μg/m3 (33) 33.0
 
April 12, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A
April 12, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 20.0 μg/m3 (18) 4.0 μg/m3 (17) 18.0
 
April 12, 2019, 3 p.m. 17.4 ppb (16) 6.4 ppb (6) N/A 11.0 ppb (10) N/A N/A 22.0 ppb (17) 0.24 ppb (3) 28.0 μg/m3 (25) 6.0 μg/m3 (25) 25.0
 
April 12, 2019, 2 p.m. 31.7 ppb (29) 11.1 ppb (10) N/A 21.0 ppb (19) N/A N/A 11.0 ppb (8) 0.39 ppb (4) 47.0 μg/m3 (43) 11.0 μg/m3 (46) 46.0
 
April 12, 2019, 1 p.m. 33.9 ppb (31) 10.3 ppb (10) N/A 24.0 ppb (22) N/A N/A 6.0 ppb (5) 0.59 ppb (7) 36.0 μg/m3 (33) 5.0 μg/m3 (21) 33.0
 
April 12, 2019, noon N/A N/A N/A N/A N/A N/A N/A N/A 25.0 μg/m3 (23) 5.0 μg/m3 (21) 23.0
 
April 12, 2019, 11 a.m. 4.9 ppb (5) 1.5 ppb (1) N/A 3.0 ppb (3) N/A N/A 28.0 ppb (22) 0.14 ppb (2) 19.0 μg/m3 (17) 6.0 μg/m3 (25) 25.0
 
April 12, 2019, 10 a.m. 3.6 ppb (3) 0.6 ppb (1) N/A 3.0 ppb (3) N/A N/A 30.0 ppb (23) 0.13 ppb (1) 20.0 μg/m3 (18) 7.0 μg/m3 (29) 29.0
 
April 12, 2019, 9 a.m. 3.2 ppb (3) 0.7 ppb (1) N/A 3.0 ppb (3) N/A N/A 32.0 ppb (25) 0.12 ppb (1) 23.0 μg/m3 (21) 7.0 μg/m3 (29) 29.0
 
April 12, 2019, 8 a.m. 2.7 ppb (3) 0.6 ppb (1) N/A 2.0 ppb (2) N/A N/A 34.0 ppb (26) 0.12 ppb (1) 24.0 μg/m3 (22) 7.0 μg/m3 (29) 29.0
 
April 12, 2019, 7 a.m. 3.2 ppb (3) 0.8 ppb (1) N/A 2.0 ppb (2) N/A N/A 33.0 ppb (25) 0.12 ppb (1) 32.0 μg/m3 (29) 11.0 μg/m3 (46) 46.0
 
April 12, 2019, 6 a.m. 5.5 ppb (5) 1.3 ppb (1) N/A 4.0 ppb (4) N/A N/A 31.0 ppb (24) 0.14 ppb (2) 37.0 μg/m3 (34) 9.0 μg/m3 (38) 38.0
 
April 12, 2019, 5 a.m. 5.7 ppb (5) 1.1 ppb (1) N/A 5.0 ppb (5) N/A N/A 32.0 ppb (25) 0.15 ppb (2) 35.0 μg/m3 (32) 9.0 μg/m3 (38) 38.0
 
April 12, 2019, 4 a.m. 8.8 ppb (8) 2.0 ppb (2) N/A 7.0 ppb (6) N/A N/A 31.0 ppb (24) 0.18 ppb (2) 46.0 μg/m3 (42) 10.0 μg/m3 (42) 42.0
 
April 12, 2019, 3 a.m. 5.0 ppb (5) 1.4 ppb (1) N/A 4.0 ppb (4) N/A N/A 37.0 ppb (28) 0.15 ppb (2) 85.0 μg/m3 (65) 15.0 μg/m3 (56) 65.0
 
April 12, 2019, 2 a.m. 3.5 ppb (3) 1.2 ppb (1) N/A 2.0 ppb (2) N/A N/A 41.0 ppb (32) 0.13 ppb (1) 108.0 μg/m3 (76) 21.0 μg/m3 (69) 76.0
 
April 12, 2019, 1 a.m. 4.5 ppb (4) 1.9 ppb (2) N/A 3.0 ppb (3) N/A N/A 38.0 ppb (29) 0.14 ppb (2) 61.0 μg/m3 (53) 17.0 μg/m3 (61) 61.0
 
April 12, 2019, midnight 4.9 ppb (5) 2.1 ppb (2) N/A 3.0 ppb (3) N/A N/A 39.0 ppb (30) 0.15 ppb (2) 77.0 μg/m3 (61) 17.0 μg/m3 (61) 61.0
 
April 11, 2019, 11 p.m. 5.7 ppb (5) 2.6 ppb (2) N/A 3.0 ppb (3) N/A N/A 39.0 ppb (30) 0.14 ppb (2) 134.0 μg/m3 (90) 28.0 μg/m3 (84) 90.0
 
April 11, 2019, 10 p.m. 5.2 ppb (5) 2.3 ppb (2) N/A 3.0 ppb (3) N/A N/A 41.0 ppb (32) 0.14 ppb (2) 132.0 μg/m3 (88) 25.0 μg/m3 (78) 88.0
 
April 11, 2019, 9 p.m. 4.9 ppb (5) 2.1 ppb (2) N/A 3.0 ppb (3) N/A N/A 40.0 ppb (31) 0.14 ppb (2) 122.0 μg/m3 (84) 25.0 μg/m3 (78) 84.0
 
April 11, 2019, 8 p.m. 4.9 ppb (5) 1.9 ppb (2) N/A 3.0 ppb (3) N/A N/A 38.0 ppb (29) 0.14 ppb (2) 55.0 μg/m3 (50) 14.0 μg/m3 (54) 54.0
 
April 11, 2019, 7 p.m. 5.1 ppb (5) 2.1 ppb (2) N/A 3.0 ppb (3) N/A N/A N/A 0.14 ppb (2) 38.0 μg/m3 (35) 12.0 μg/m3 (50) 50.0
 
April 11, 2019, 6 p.m. 11.8 ppb (11) 4.8 ppb (4) N/A 7.0 ppb (6) N/A N/A N/A 0.21 ppb (2) 41.0 μg/m3 (37) 9.0 μg/m3 (38) 38.0
 
April 11, 2019, 5 p.m. 12.6 ppb (12) 4.6 ppb (4) N/A 8.0 ppb (7) N/A N/A N/A 0.18 ppb (2) 35.0 μg/m3 (32) 14.0 μg/m3 (54) 54.0
 
April 11, 2019, 4 p.m. 12.5 ppb (12) 4.3 ppb (4) N/A 8.0 ppb (7) N/A N/A N/A 0.18 ppb (2) 36.0 μg/m3 (33) 11.0 μg/m3 (46) 46.0
 
April 11, 2019, 3 p.m. 11.5 ppb (11) 2.9 ppb (3) N/A 9.0 ppb (8) N/A N/A 23.0 ppb (18) 0.22 ppb (2) 25.0 μg/m3 (23) 4.0 μg/m3 (17) 23.0
 
April 11, 2019, 2 p.m. 11.7 ppb (11) 2.1 ppb (2) N/A 10.0 ppb (9) N/A N/A 23.0 ppb (18) 0.21 ppb (2) 20.0 μg/m3 (18) 6.0 μg/m3 (25) 25.0
 
April 11, 2019, 1 p.m. 15.3 ppb (14) 1.8 ppb (2) N/A 13.0 ppb (12) N/A N/A 15.0 ppb (12) 0.26 ppb (3) 47.0 μg/m3 (43) 8.0 μg/m3 (33) 43.0
 
April 11, 2019, noon N/A N/A N/A N/A N/A N/A N/A N/A 44.0 μg/m3 (40) 5.0 μg/m3 (21) 40.0
 
April 11, 2019, 11 a.m. 5.2 ppb (5) 0.9 ppb (1) N/A 4.0 ppb (4) N/A N/A 28.0 ppb (22) 0.13 ppb (1) 41.0 μg/m3 (37) 8.0 μg/m3 (33) 37.0
 
April 11, 2019, 10 a.m. 5.3 ppb (5) 1.1 ppb (1) N/A 4.0 ppb (4) N/A N/A 30.0 ppb (23) 0.13 ppb (1) 31.0 μg/m3 (28) 11.0 μg/m3 (46) 46.0
 
April 11, 2019, 9 a.m. 7.3 ppb (7) 1.3 ppb (1) N/A 6.0 ppb (6) N/A N/A 23.0 ppb (18) 0.15 ppb (2) 29.0 μg/m3 (26) 7.0 μg/m3 (29) 29.0
 
April 11, 2019, 8 a.m. 7.1 ppb (7) 0.8 ppb (1) N/A 6.0 ppb (6) N/A N/A 21.0 ppb (16) 0.14 ppb (2) 42.0 μg/m3 (38) 10.0 μg/m3 (42) 42.0
 
April 11, 2019, 7 a.m. 4.9 ppb (5) 0.6 ppb (1) N/A 4.0 ppb (4) N/A N/A 26.0 ppb (20) 0.13 ppb (1) 49.0 μg/m3 (45) 14.0 μg/m3 (54) 54.0
 
April 11, 2019, 6 a.m. 6.1 ppb (6) 0.9 ppb (1) N/A 5.0 ppb (5) N/A N/A 25.0 ppb (19) 0.14 ppb (2) 37.0 μg/m3 (34) 11.0 μg/m3 (46) 46.0
 
April 11, 2019, 5 a.m. 8.4 ppb (8) 1.5 ppb (1) N/A 7.0 ppb (6) N/A N/A 25.0 ppb (19) 0.15 ppb (2) 46.0 μg/m3 (42) 12.0 μg/m3 (50) 50.0
 
April 11, 2019, 4 a.m. 5.8 ppb (5) 1.0 ppb (1) N/A 5.0 ppb (5) N/A N/A 31.0 ppb (24) 0.15 ppb (2) 42.0 μg/m3 (38) 10.0 μg/m3 (42) 42.0
 
April 11, 2019, 3 a.m. 6.2 ppb (6) 1.7 ppb (2) N/A 5.0 ppb (5) N/A N/A 34.0 ppb (26) 0.15 ppb (2) 40.0 μg/m3 (36) 11.0 μg/m3 (46) 46.0
 
April 11, 2019, 2 a.m. 4.3 ppb (4) 1.3 ppb (1) N/A 3.0 ppb (3) N/A N/A 37.0 ppb (28) 0.13 ppb (1) 45.0 μg/m3 (41) 11.0 μg/m3 (46) 46.0
 
April 11, 2019, 1 a.m. 5.7 ppb (5) 2.2 ppb (2) N/A 3.0 ppb (3) N/A N/A 38.0 ppb (29) 0.15 ppb (2) 58.0 μg/m3 (52) 15.0 μg/m3 (56) 56.0
 
April 11, 2019, midnight 6.4 ppb (6) 2.5 ppb (2) N/A 4.0 ppb (4) N/A N/A 38.0 ppb (29) 0.14 ppb (2) 81.0 μg/m3 (63) 20.0 μg/m3 (67) 67.0
 
April 10, 2019, 11 p.m. 7.0 ppb (6) 3.0 ppb (3) N/A 4.0 ppb (4) N/A N/A 37.0 ppb (28) 0.15 ppb (2) 109.0 μg/m3 (77) 23.0 μg/m3 (73) 77.0
 
April 10, 2019, 10 p.m. 6.7 ppb (6) 2.9 ppb (3) N/A 4.0 ppb (4) N/A N/A 38.0 ppb (29) 0.15 ppb (2) 134.0 μg/m3 (90) 23.0 μg/m3 (73) 90.0
 
April 10, 2019, 9 p.m. 6.3 ppb (6) 2.5 ppb (2) N/A 4.0 ppb (4) N/A N/A 39.0 ppb (30) 0.14 ppb (2) 85.0 μg/m3 (65) 15.0 μg/m3 (56) 65.0
 
April 10, 2019, 8 p.m. 5.6 ppb (5) 2.1 ppb (2) N/A 3.0 ppb (3) N/A N/A 38.0 ppb (29) 0.14 ppb (2) 56.0 μg/m3 (50) 9.0 μg/m3 (38) 50.0
 
April 10, 2019, 7 p.m. 6.4 ppb (6) 2.6 ppb (2) N/A 4.0 ppb (4) N/A N/A 38.0 ppb (29) 0.15 ppb (2) 29.0 μg/m3 (26) 5.0 μg/m3 (21) 29.0
 
April 10, 2019, 6 p.m. 5.8 ppb (5) 2.4 ppb (2) N/A 4.0 ppb (4) N/A N/A 36.0 ppb (28) 0.16 ppb (2) 12.0 μg/m3 (11) 3.0 μg/m3 (12) 28.0
 
April 10, 2019, 5 p.m. 4.9 ppb (5) 1.9 ppb (2) N/A 3.0 ppb (3) N/A N/A 35.0 ppb (27) 0.17 ppb (2) 13.0 μg/m3 (12) 5.0 μg/m3 (21) 27.0
 
April 10, 2019, 4 p.m. 5.3 ppb (5) 1.8 ppb (2) N/A 4.0 ppb (4) N/A N/A 33.0 ppb (25) 0.16 ppb (2) 13.0 μg/m3 (12) 6.0 μg/m3 (25) 25.0
 
April 10, 2019, 3 p.m. 11.3 ppb (10) 3.5 ppb (3) N/A 8.0 ppb (7) N/A N/A 27.0 ppb (21) 0.22 ppb (2) 20.0 μg/m3 (18) 6.0 μg/m3 (25) 25.0
 
April 10, 2019, 2 p.m. 25.0 ppb (23) 6.5 ppb (6) N/A 19.0 ppb (18) N/A N/A 14.0 ppb (11) 0.33 ppb (4) 33.0 μg/m3 (30) 9.0 μg/m3 (38) 38.0
 
April 10, 2019, 1 p.m. 31.3 ppb (29) 7.2 ppb (7) N/A 24.0 ppb (22) N/A N/A 8.0 ppb (6) 0.55 ppb (6) 63.0 μg/m3 (54) 14.0 μg/m3 (54) 54.0
 
April 10, 2019, noon N/A N/A N/A N/A N/A N/A N/A N/A 29.0 μg/m3 (26) 11.0 μg/m3 (46) 46.0
 
April 10, 2019, 11 a.m. 7.2 ppb (7) 0.8 ppb (1) N/A 7.0 ppb (6) N/A N/A 28.0 ppb (22) 0.15 ppb (2) 24.0 μg/m3 (22) 11.0 μg/m3 (46) 46.0
 
April 10, 2019, 10 a.m. 4.5 ppb (4) 0.7 ppb (1) N/A 4.0 ppb (4) N/A N/A 32.0 ppb (25) 0.13 ppb (1) 21.0 μg/m3 (19) 6.0 μg/m3 (25) 25.0
 
April 10, 2019, 9 a.m. 5.7 ppb (5) 0.9 ppb (1) N/A 5.0 ppb (5) N/A N/A 28.0 ppb (22) 0.14 ppb (2) 22.0 μg/m3 (20) 10.0 μg/m3 (42) 42.0
 
April 10, 2019, 8 a.m. 3.7 ppb (3) 0.8 ppb (1) N/A 3.0 ppb (3) N/A N/A 34.0 ppb (26) 0.14 ppb (2) 35.0 μg/m3 (32) 12.0 μg/m3 (50) 50.0
 
April 10, 2019, 7 a.m. 4.6 ppb (4) 0.9 ppb (1) N/A 4.0 ppb (4) N/A N/A 33.0 ppb (25) 0.14 ppb (2) 39.0 μg/m3 (35) 9.0 μg/m3 (38) 38.0
 
April 10, 2019, 6 a.m. 6.2 ppb (6) 1.2 ppb (1) N/A 5.0 ppb (5) N/A N/A 32.0 ppb (25) 0.16 ppb (2) 45.0 μg/m3 (41) 12.0 μg/m3 (50) 50.0
 
April 10, 2019, 5 a.m. 4.6 ppb (4) 0.6 ppb (1) N/A 4.0 ppb (4) N/A N/A 33.0 ppb (25) 0.15 ppb (2) 49.0 μg/m3 (45) 17.0 μg/m3 (61) 61.0
 
April 10, 2019, 4 a.m. 5.5 ppb (5) 1.1 ppb (1) N/A 4.0 ppb (4) N/A N/A 34.0 ppb (26) 0.15 ppb (2) 52.0 μg/m3 (47) 13.0 μg/m3 (52) 52.0
 
April 10, 2019, 3 a.m. 5.9 ppb (5) 1.2 ppb (1) N/A 5.0 ppb (5) N/A N/A 36.0 ppb (28) 0.17 ppb (2) 44.0 μg/m3 (40) 15.0 μg/m3 (56) 56.0
 
April 10, 2019, 2 a.m. 5.0 ppb (5) 1.3 ppb (1) N/A 4.0 ppb (4) N/A N/A 41.0 ppb (32) 0.16 ppb (2) N/A 11.0 μg/m3 (46) 46.0
 
April 10, 2019, 1 a.m. 6.8 ppb (6) 2.5 ppb (2) N/A 4.0 ppb (4) N/A N/A 40.0 ppb (31) 0.17 ppb (2) N/A 27.0 μg/m3 (82) 82.0
 
April 10, 2019, midnight 6.5 ppb (6) 2.7 ppb (3) N/A 4.0 ppb (4) N/A N/A 42.0 ppb (32) 0.17 ppb (2) 257.0 μg/m3 (151) 47.0 μg/m3 (129) 151.0
 
April 9, 2019, 11 p.m. 5.7 ppb (5) 2.3 ppb (2) N/A 3.0 ppb (3) N/A N/A 42.0 ppb (32) 0.16 ppb (2) 279.0 μg/m3 (162) 48.0 μg/m3 (131) 162.0
 
April 9, 2019, 10 p.m. 5.5 ppb (5) 2.2 ppb (2) N/A 3.0 ppb (3) N/A N/A 44.0 ppb (34) 0.15 ppb (2) 265.0 μg/m3 (155) 37.0 μg/m3 (104) 155.0
 
April 9, 2019, 9 p.m. 5.3 ppb (5) 2.4 ppb (2) N/A 3.0 ppb (3) N/A N/A 43.0 ppb (33) 0.15 ppb (2) 210.0 μg/m3 (128) 28.0 μg/m3 (84) 128.0
 
April 9, 2019, 8 p.m. 5.2 ppb (5) 2.1 ppb (2) N/A 3.0 ppb (3) N/A N/A 43.0 ppb (33) 0.14 ppb (2) 273.0 μg/m3 (159) 33.0 μg/m3 (95) 159.0
 
April 9, 2019, 7 p.m. 5.3 ppb (5) 2.1 ppb (2) N/A 3.0 ppb (3) N/A N/A 42.0 ppb (32) 0.15 ppb (2) 175.0 μg/m3 (110) 19.0 μg/m3 (65) 110.0
 
April 9, 2019, 6 p.m. 4.3 ppb (4) 1.5 ppb (1) N/A 3.0 ppb (3) N/A N/A 41.0 ppb (32) 0.14 ppb (2) 28.0 μg/m3 (25) 3.0 μg/m3 (12) 32.0
 
April 9, 2019, 5 p.m. 3.8 ppb (4) 1.3 ppb (1) N/A 2.0 ppb (2) N/A N/A 41.0 ppb (32) 0.15 ppb (2) 53.0 μg/m3 (48) 3.0 μg/m3 (12) 48.0
 
April 9, 2019, 4 p.m. 4.8 ppb (4) 1.9 ppb (2) N/A 3.0 ppb (3) N/A N/A 40.0 ppb (31) 0.14 ppb (2) 20.0 μg/m3 (18) 4.0 μg/m3 (17) 31.0
 
April 9, 2019, 3 p.m. 6.0 ppb (6) 2.1 ppb (2) N/A 4.0 ppb (4) N/A N/A 37.0 ppb (28) 0.15 ppb (2) 22.0 μg/m3 (20) 4.0 μg/m3 (17) 28.0
 
April 9, 2019, 2 p.m. 7.9 ppb (7) 2.1 ppb (2) N/A 6.0 ppb (6) N/A N/A 27.0 ppb (21) 0.15 ppb (2) 21.0 μg/m3 (19) 5.0 μg/m3 (21) 21.0
 
April 9, 2019, 1 p.m. 9.8 ppb (9) 2.4 ppb (2) N/A 7.0 ppb (6) N/A N/A 28.0 ppb (22) 0.21 ppb (2) 25.0 μg/m3 (23) 4.0 μg/m3 (17) 23.0
 
April 9, 2019, noon N/A N/A N/A N/A N/A N/A N/A N/A 17.0 μg/m3 (15) 4.0 μg/m3 (17) 17.0
 
April 9, 2019, 11 a.m. 2.7 ppb (3) 0.7 ppb (1) N/A 2.0 ppb (2) N/A N/A 25.0 ppb (19) 0.11 ppb (1) 15.0 μg/m3 (14) 3.0 μg/m3 (12) 19.0
 
April 9, 2019, 10 a.m. 2.3 ppb (2) 0.8 ppb (1) N/A 2.0 ppb (2) N/A N/A 17.0 ppb (13) 0.11 ppb (1) 13.0 μg/m3 (12) 2.0 μg/m3 (8) 13.0
 
April 9, 2019, 9 a.m. 2.7 ppb (3) 0.9 ppb (1) N/A 2.0 ppb (2) N/A N/A 14.0 ppb (11) 0.11 ppb (1) 10.0 μg/m3 (9) 2.0 μg/m3 (8) 11.0
 
April 9, 2019, 8 a.m. 2.4 ppb (2) 0.6 ppb (1) N/A 2.0 ppb (2) N/A N/A 15.0 ppb (12) 0.11 ppb (1) 19.0 μg/m3 (17) 5.0 μg/m3 (21) 21.0
 
April 9, 2019, 7 a.m. 3.1 ppb (3) 0.9 ppb (1) N/A 2.0 ppb (2) N/A N/A 14.0 ppb (11) 0.12 ppb (1) 18.0 μg/m3 (16) 6.0 μg/m3 (25) 25.0
 
April 9, 2019, 6 a.m. 4.5 ppb (4) 0.9 ppb (1) N/A 4.0 ppb (4) N/A N/A 12.0 ppb (9) 0.13 ppb (1) 23.0 μg/m3 (21) 5.0 μg/m3 (21) 21.0
 
April 9, 2019, 5 a.m. 4.0 ppb (4) 1.0 ppb (1) N/A 3.0 ppb (3) N/A N/A 14.0 ppb (11) 0.13 ppb (1) 20.0 μg/m3 (18) 6.0 μg/m3 (25) 25.0
 
April 9, 2019, 4 a.m. 4.7 ppb (4) 1.3 ppb (1) N/A 3.0 ppb (3) N/A N/A 16.0 ppb (12) 0.13 ppb (1) 23.0 μg/m3 (21) 8.0 μg/m3 (33) 33.0
 
April 9, 2019, 3 a.m. 6.3 ppb (6) 2.2 ppb (2) N/A 4.0 ppb (4) N/A N/A 16.0 ppb (12) 0.15 ppb (2) 20.0 μg/m3 (18) 6.0 μg/m3 (25) 25.0
 
April 9, 2019, 2 a.m. 5.9 ppb (5) 2.3 ppb (2) N/A 4.0 ppb (4) N/A N/A 18.0 ppb (14) 0.15 ppb (2) 21.0 μg/m3 (19) 8.0 μg/m3 (33) 33.0
 
April 9, 2019, 1 a.m. 5.5 ppb (5) 2.5 ppb (2) N/A 3.0 ppb (3) N/A N/A 18.0 ppb (14) 0.14 ppb (2) 41.0 μg/m3 (37) 8.0 μg/m3 (33) 37.0
 
April 9, 2019, midnight 4.8 ppb (4) 2.2 ppb (2) N/A 3.0 ppb (3) N/A N/A 20.0 ppb (15) 0.14 ppb (2) 36.0 μg/m3 (33) 10.0 μg/m3 (42) 42.0
 
April 8, 2019, 11 p.m. 6.4 ppb (6) 3.0 ppb (3) N/A 3.0 ppb (3) N/A N/A 23.0 ppb (18) 0.16 ppb (2) N/A 40.0 μg/m3 (111) 111.0
 
April 8, 2019, 10 p.m. 5.6 ppb (5) 2.9 ppb (3) N/A 3.0 ppb (3) N/A N/A 23.0 ppb (18) 0.15 ppb (2) 41.0 μg/m3 (37) 7.0 μg/m3 (29) 37.0
 
April 8, 2019, 9 p.m. 5.6 ppb (5) 3.0 ppb (3) N/A 3.0 ppb (3) N/A N/A 23.0 ppb (18) 0.16 ppb (2) 56.0 μg/m3 (50) 8.0 μg/m3 (33) 50.0
 
April 8, 2019, 8 p.m. 6.3 ppb (6) 3.1 ppb (3) N/A 3.0 ppb (3) N/A N/A 23.0 ppb (18) 0.15 ppb (2) 42.0 μg/m3 (38) 3.0 μg/m3 (12) 38.0
 
April 8, 2019, 7 p.m. 5.9 ppb (5) 2.6 ppb (2) N/A 3.0 ppb (3) N/A N/A 24.0 ppb (18) 0.14 ppb (2) 30.0 μg/m3 (27) 4.0 μg/m3 (17) 27.0
 
April 8, 2019, 6 p.m. 7.3 ppb (7) 3.2 ppb (3) N/A 4.0 ppb (4) N/A N/A 22.0 ppb (17) 0.15 ppb (2) 49.0 μg/m3 (45) 7.0 μg/m3 (29) 45.0
 
April 8, 2019, 5 p.m. 16.6 ppb (15) 7.5 ppb (7) N/A 9.0 ppb (8) N/A N/A 16.0 ppb (12) 0.22 ppb (2) 58.0 μg/m3 (52) 8.0 μg/m3 (33) 52.0
 
April 8, 2019, 4 p.m. 21.8 ppb (20) 10.4 ppb (10) N/A 11.0 ppb (10) N/A N/A 10.0 ppb (8) 0.23 ppb (3) 68.0 μg/m3 (56) 18.0 μg/m3 (63) 63.0
 
April 8, 2019, 3 p.m. 31.0 ppb (29) 16.8 ppb (16) N/A 14.0 ppb (13) N/A N/A 6.0 ppb (5) 0.33 ppb (4) 54.0 μg/m3 (49) 11.0 μg/m3 (46) 49.0
 
April 8, 2019, 2 p.m. 17.0 ppb (16) 7.3 ppb (7) N/A 10.0 ppb (9) N/A N/A 4.0 ppb (3) 0.24 ppb (3) 30.0 μg/m3 (27) 6.0 μg/m3 (25) 27.0
 
April 8, 2019, 1 p.m. 25.2 ppb (23) 11.0 ppb (10) N/A 14.0 ppb (13) N/A N/A 2.0 ppb (2) 0.3 ppb (3) 38.0 μg/m3 (35) 8.0 μg/m3 (33) 35.0
 
April 8, 2019, noon N/A N/A N/A N/A N/A N/A N/A N/A 26.0 μg/m3 (24) 6.0 μg/m3 (25) 25.0
 
April 8, 2019, 11 a.m. 3.1 ppb (3) 0.7 ppb (1) N/A 2.0 ppb (2) N/A N/A 18.0 ppb (14) 0.13 ppb (1) 29.0 μg/m3 (26) 7.0 μg/m3 (29) 29.0
 
April 8, 2019, 10 a.m. 2.7 ppb (3) 0.8 ppb (1) N/A 2.0 ppb (2) N/A N/A 18.0 ppb (14) 0.12 ppb (1) 28.0 μg/m3 (25) 7.0 μg/m3 (29) 29.0
 
April 8, 2019, 9 a.m. 2.9 ppb (3) 0.8 ppb (1) N/A 2.0 ppb (2) N/A N/A 19.0 ppb (15) 0.12 ppb (1) 36.0 μg/m3 (33) 10.0 μg/m3 (42) 42.0
 
April 8, 2019, 8 a.m. 3.1 ppb (3) 0.9 ppb (1) N/A 2.0 ppb (2) N/A N/A 20.0 ppb (15) 0.13 ppb (1) 31.0 μg/m3 (28) 12.0 μg/m3 (50) 50.0
 
April 8, 2019, 7 a.m. 3.9 ppb (4) 1.0 ppb (1) N/A 3.0 ppb (3) N/A N/A 20.0 ppb (15) 0.14 ppb (2) 26.0 μg/m3 (24) 8.0 μg/m3 (33) 33.0
 
April 8, 2019, 6 a.m. 3.9 ppb (4) 1.0 ppb (1) N/A 3.0 ppb (3) N/A N/A 21.0 ppb (16) 0.13 ppb (1) 28.0 μg/m3 (25) 8.0 μg/m3 (33) 33.0
 
April 8, 2019, 5 a.m. 4.2 ppb (4) 0.9 ppb (1) N/A 3.0 ppb (3) N/A N/A 24.0 ppb (18) 0.14 ppb (2) 22.0 μg/m3 (20) 7.0 μg/m3 (29) 29.0
 
April 8, 2019, 4 a.m. 4.7 ppb (4) 1.3 ppb (1) N/A 3.0 ppb (3) N/A N/A 25.0 ppb (19) 0.16 ppb (2) 35.0 μg/m3 (32) 8.0 μg/m3 (33) 33.0
 
April 8, 2019, 3 a.m. 5.3 ppb (5) 1.4 ppb (1) N/A 4.0 ppb (4) N/A N/A 24.0 ppb (18) 0.16 ppb (2) 31.0 μg/m3 (28) 6.0 μg/m3 (25) 28.0
 
April 8, 2019, 2 a.m. 5.6 ppb (5) 1.8 ppb (2) N/A 4.0 ppb (4) N/A N/A 26.0 ppb (20) 0.16 ppb (2) 32.0 μg/m3 (29) 6.0 μg/m3 (25) 29.0
 
April 8, 2019, 1 a.m. 4.6 ppb (4) 1.6 ppb (1) N/A 3.0 ppb (3) N/A N/A 29.0 ppb (22) 0.13 ppb (1) 34.0 μg/m3 (31) 6.0 μg/m3 (25) 31.0
 
April 8, 2019, midnight 5.7 ppb (5) 2.5 ppb (2) N/A 3.0 ppb (3) N/A N/A 29.0 ppb (22) 0.14 ppb (2) 44.0 μg/m3 (40) 8.0 μg/m3 (33) 40.0
 
April 7, 2019, 11 p.m. 4.7 ppb (4) 1.9 ppb (2) N/A 3.0 ppb (3) N/A N/A 31.0 ppb (24) 0.14 ppb (2) 59.0 μg/m3 (52) 11.0 μg/m3 (46) 52.0
 
April 7, 2019, 10 p.m. 4.3 ppb (4) 2.1 ppb (2) N/A 2.0 ppb (2) N/A N/A 34.0 ppb (26) 0.11 ppb (1) 61.0 μg/m3 (53) 7.0 μg/m3 (29) 53.0
 
April 7, 2019, 9 p.m. 4.5 ppb (4) 1.9 ppb (2) N/A 3.0 ppb (3) N/A N/A 34.0 ppb (26) 0.09 ppb (1) 36.0 μg/m3 (33) 6.0 μg/m3 (25) 33.0
 
April 7, 2019, 8 p.m. 4.6 ppb (4) 1.9 ppb (2) N/A 3.0 ppb (3) N/A N/A 34.0 ppb (26) 0.1 ppb (1) 37.0 μg/m3 (34) 5.0 μg/m3 (21) 34.0
 
April 7, 2019, 7 p.m. 6.1 ppb (6) 2.4 ppb (2) N/A 4.0 ppb (4) N/A N/A 35.0 ppb (27) 0.13 ppb (1) 18.0 μg/m3 (16) 2.0 μg/m3 (8) 27.0
 
April 7, 2019, 6 p.m. 7.0 ppb (6) 2.2 ppb (2) N/A 5.0 ppb (5) N/A N/A 33.0 ppb (25) 0.13 ppb (1) 17.0 μg/m3 (15) 3.0 μg/m3 (12) 25.0
 
April 7, 2019, 5 p.m. 11.5 ppb (11) 4.5 ppb (4) N/A 7.0 ppb (6) N/A N/A 20.0 ppb (15) 0.16 ppb (2) 20.0 μg/m3 (18) 4.0 μg/m3 (17) 18.0
 
April 7, 2019, 4 p.m. 9.9 ppb (9) 3.6 ppb (3) N/A 6.0 ppb (6) N/A N/A 19.0 ppb (15) 0.14 ppb (2) 11.0 μg/m3 (10) 4.0 μg/m3 (17) 17.0
 
April 7, 2019, 3 p.m. 7.8 ppb (7) 2.9 ppb (3) N/A 5.0 ppb (5) N/A N/A 20.0 ppb (15) 0.11 ppb (1) 10.0 μg/m3 (9) 3.0 μg/m3 (12) 15.0
 
April 7, 2019, 2 p.m. 3.6 ppb (3) 0.3 ppb (0) N/A 3.0 ppb (3) N/A N/A 21.0 ppb (16) 0.07 ppb (1) 7.0 μg/m3 (6) 3.0 μg/m3 (12) 16.0
 
April 7, 2019, 1 p.m. 3.9 ppb (4) 0.9 ppb (1) N/A 3.0 ppb (3) N/A N/A 22.0 ppb (17) 0.05 ppb (1) 6.0 μg/m3 (5) 1.0 μg/m3 (4) 17.0
 
April 7, 2019, noon N/A N/A N/A N/A N/A N/A N/A N/A 10.0 μg/m3 (9) -2.0 μg/m3 (0) 9.0
 
April 7, 2019, 11 a.m. 9.2 ppb (9) 0.2 ppb (0) N/A 9.0 ppb (8) N/A N/A 9.0 ppb (7) 0.09 ppb (1) 9.0 μg/m3 (8) -2.0 μg/m3 (0) 9.0
 
April 7, 2019, 10 a.m. 7.1 ppb (7) 0.9 ppb (1) N/A 6.0 ppb (6) N/A N/A 10.0 ppb (8) 0.08 ppb (1) 13.0 μg/m3 (12) -2.0 μg/m3 (0) 12.0
 
April 7, 2019, 9 a.m. 7.3 ppb (7) 0.6 ppb (1) N/A 7.0 ppb (6) N/A N/A 10.0 ppb (8) 0.12 ppb (1) 16.0 μg/m3 (15) N/A 15.0
 
April 7, 2019, 8 a.m. 7.9 ppb (7) 2.2 ppb (2) N/A 6.0 ppb (6) N/A N/A 17.0 ppb (13) 0.08 ppb (1) 12.0 μg/m3 (11) N/A 13.0
 
April 7, 2019, midnight 4.4 ppb (4) 1.8 ppb (2) N/A 3.0 ppb (3) N/A N/A 37.0 ppb (28) 0.14 ppb (2) 15.0 μg/m3 (14) 3.0 μg/m3 (12) 28.0
 
April 6, 2019, 11 p.m. 4.4 ppb (4) 1.8 ppb (2) N/A 3.0 ppb (3) N/A N/A 37.0 ppb (28) 0.13 ppb (1) 15.0 μg/m3 (14) 2.0 μg/m3 (8) 28.0
 
April 6, 2019, 10 p.m. 4.3 ppb (4) 1.8 ppb (2) N/A 3.0 ppb (3) N/A N/A 37.0 ppb (28) 0.12 ppb (1) 27.0 μg/m3 (25) 1.0 μg/m3 (4) 28.0
 
April 6, 2019, 9 p.m. 5.1 ppb (5) 2.5 ppb (2) N/A 3.0 ppb (3) N/A N/A 38.0 ppb (29) 0.14 ppb (2) 25.0 μg/m3 (23) 2.0 μg/m3 (8) 29.0
 
April 6, 2019, 8 p.m. 5.3 ppb (5) 2.4 ppb (2) N/A 3.0 ppb (3) N/A N/A 37.0 ppb (28) 0.13 ppb (1) 49.0 μg/m3 (45) 4.0 μg/m3 (17) 45.0
 
April 6, 2019, 7 p.m. 6.1 ppb (6) 2.8 ppb (3) N/A 3.0 ppb (3) N/A N/A 34.0 ppb (26) 0.12 ppb (1) 23.0 μg/m3 (21) 4.0 μg/m3 (17) 26.0
 
April 6, 2019, 6 p.m. 8.6 ppb (8) 3.7 ppb (3) N/A 5.0 ppb (5) N/A N/A 24.0 ppb (18) 0.14 ppb (2) 21.0 μg/m3 (19) 1.0 μg/m3 (4) 19.0
 
April 6, 2019, 5 p.m. 6.1 ppb (6) 2.6 ppb (2) N/A 4.0 ppb (4) N/A N/A 22.0 ppb (17) 0.12 ppb (1) 5.0 μg/m3 (5) 2.0 μg/m3 (8) 17.0
 
April 6, 2019, 4 p.m. 4.0 ppb (4) 1.8 ppb (2) N/A 2.0 ppb (2) N/A N/A 21.0 ppb (16) 0.11 ppb (1) 6.0 μg/m3 (5) 1.0 μg/m3 (4) 16.0
 
April 6, 2019, 3 p.m. 11.9 ppb (11) 5.4 ppb (5) N/A 7.0 ppb (6) N/A N/A 12.0 ppb (9) 0.14 ppb (2) 7.0 μg/m3 (6) 2.0 μg/m3 (8) 11.0
 
April 6, 2019, 2 p.m. 27.4 ppb (25) 14.6 ppb (14) N/A 13.0 ppb (12) N/A N/A 3.0 ppb (2) 0.33 ppb (4) 19.0 μg/m3 (17) 5.0 μg/m3 (21) 25.0
 
April 6, 2019, 1 p.m. 21.6 ppb (20) 6.7 ppb (6) N/A 15.0 ppb (14) N/A N/A 4.0 ppb (3) 0.42 ppb (5) 13.0 μg/m3 (12) 6.0 μg/m3 (25) 25.0
 
April 6, 2019, noon N/A N/A N/A N/A N/A N/A N/A N/A 4.0 μg/m3 (4) -2.0 μg/m3 (0) 4.0
 
April 6, 2019, 11 a.m. 5.9 ppb (5) 0.9 ppb (1) N/A 5.0 ppb (5) N/A N/A 16.0 ppb (12) 0.11 ppb (1) 3.0 μg/m3 (3) -1.0 μg/m3 (0) 12.0
 
April 6, 2019, 10 a.m. 4.4 ppb (4) 0.4 ppb (0) N/A 4.0 ppb (4) N/A N/A 15.0 ppb (12) 0.1 ppb (1) 6.0 μg/m3 (5) -1.0 μg/m3 (0) 12.0
 
April 6, 2019, 9 a.m. 5.3 ppb (5) 0.9 ppb (1) N/A 5.0 ppb (5) N/A N/A 19.0 ppb (15) 0.12 ppb (1) 9.0 μg/m3 (8) 0.0 μg/m3 (0) 15.0
 
April 6, 2019, 8 a.m. 7.4 ppb (7) 1.6 ppb (1) N/A 6.0 ppb (6) N/A N/A 21.0 ppb (16) 0.14 ppb (2) 10.0 μg/m3 (9) 2.0 μg/m3 (8) 16.0
 
April 6, 2019, 7 a.m. 7.0 ppb (6) 1.2 ppb (1) N/A 6.0 ppb (6) N/A N/A 19.0 ppb (15) 0.15 ppb (2) 9.0 μg/m3 (8) 2.0 μg/m3 (8) 15.0
 
April 6, 2019, 6 a.m. 4.8 ppb (4) 1.0 ppb (1) N/A 4.0 ppb (4) N/A N/A 26.0 ppb (20) 0.14 ppb (2) 8.0 μg/m3 (7) 0.0 μg/m3 (0) 20.0
 
April 6, 2019, 5 a.m. 5.8 ppb (5) 1.5 ppb (1) N/A 4.0 ppb (4) N/A N/A 31.0 ppb (24) 0.13 ppb (1) 8.0 μg/m3 (7) 0.0 μg/m3 (0) 24.0
 
April 6, 2019, 4 a.m. 5.4 ppb (5) 1.5 ppb (1) N/A 4.0 ppb (4) N/A N/A 33.0 ppb (25) 0.13 ppb (1) 7.0 μg/m3 (6) 2.0 μg/m3 (8) 25.0
 
April 6, 2019, 3 a.m. 7.3 ppb (7) 2.6 ppb (2) N/A 5.0 ppb (5) N/A N/A 31.0 ppb (24) 0.15 ppb (2) 8.0 μg/m3 (7) 2.0 μg/m3 (8) 24.0
 
April 6, 2019, 2 a.m. 6.7 ppb (6) 2.5 ppb (2) N/A 4.0 ppb (4) N/A N/A 30.0 ppb (23) 0.14 ppb (2) 12.0 μg/m3 (11) 3.0 μg/m3 (12) 23.0
 
April 6, 2019, 1 a.m. 8.0 ppb (7) 3.2 ppb (3) N/A 5.0 ppb (5) N/A N/A 30.0 ppb (23) 0.15 ppb (2) 15.0 μg/m3 (14) 4.0 μg/m3 (17) 23.0
 
April 6, 2019, midnight 8.3 ppb (8) 3.9 ppb (4) N/A 4.0 ppb (4) N/A N/A 31.0 ppb (24) 0.14 ppb (2) 9.0 μg/m3 (8) 0.0 μg/m3 (0) 24.0
 
April 5, 2019, 11 p.m. 6.1 ppb (6) 2.9 ppb (3) N/A 3.0 ppb (3) N/A N/A 32.0 ppb (25) 0.13 ppb (1) 11.0 μg/m3 (10) 1.0 μg/m3 (4) 25.0
 
April 5, 2019, 10 p.m. 6.8 ppb (6) 3.0 ppb (3) N/A 4.0 ppb (4) N/A N/A 32.0 ppb (25) 0.13 ppb (1) 13.0 μg/m3 (12) 2.0 μg/m3 (8) 25.0
 
April 5, 2019, 9 p.m. 6.8 ppb (6) 3.0 ppb (3) N/A 4.0 ppb (4) N/A N/A 32.0 ppb (25) 0.13 ppb (1) 11.0 μg/m3 (10) 1.0 μg/m3 (4) 25.0