AQSQID: 000101005

Site Name: Abbotsford Airport

Location: Abbotsford (Columbia Rd), CC

Reporting: True, Located: True

Current AQI: 50.0

Abbotsford (Columbia Rd) CC, CA: 49.021506, -122.326556

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
March 22, 2019, 4 a.m. N/A -0.3 ppb (0) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 33.0 ppb (25) 0.13 ppb (1) 16.0 μg/m3 (15) 12.2 μg/m3 (50) 50.0
 
March 22, 2019, 3 a.m. N/A -0.2 ppb (0) N/A 4.0 ppb (4) N/A 1.0 ppb (1) 37.0 ppb (28) 0.11 ppb (1) 14.0 μg/m3 (13) 12.9 μg/m3 (52) 52.0
 
March 22, 2019, 2 a.m. N/A 0.0 ppb (0) N/A 4.0 ppb (4) N/A 1.0 ppb (1) 39.0 ppb (30) 0.11 ppb (1) 16.0 μg/m3 (15) 13.7 μg/m3 (54) 54.0
 
March 22, 2019, 1 a.m. N/A 0.1 ppb (0) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 42.0 ppb (32) 0.11 ppb (1) 16.0 μg/m3 (15) 10.9 μg/m3 (45) 45.0
 
March 22, 2019, midnight N/A 0.8 ppb (1) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 42.0 ppb (32) 0.13 ppb (1) 16.0 μg/m3 (15) 11.5 μg/m3 (48) 48.0
 
March 21, 2019, 11 p.m. N/A 1.2 ppb (1) N/A 5.0 ppb (5) N/A 1.0 ppb (1) 40.0 ppb (31) 0.12 ppb (1) 18.0 μg/m3 (16) 11.4 μg/m3 (48) 48.0
 
March 21, 2019, 10 p.m. N/A 0.7 ppb (1) N/A 4.0 ppb (4) N/A 1.0 ppb (1) 40.0 ppb (31) 0.1 ppb (1) 18.0 μg/m3 (16) 9.6 μg/m3 (40) 40.0
 
March 21, 2019, 9 p.m. N/A 1.1 ppb (1) N/A 4.0 ppb (4) N/A 1.0 ppb (1) 38.0 ppb (29) 0.1 ppb (1) 22.0 μg/m3 (20) 10.1 μg/m3 (42) 42.0
 
March 21, 2019, 8 p.m. N/A 1.5 ppb (1) N/A 5.0 ppb (5) N/A 1.0 ppb (1) 38.0 ppb (29) 0.1 ppb (1) 26.0 μg/m3 (24) 8.6 μg/m3 (36) 36.0
 
March 21, 2019, 7 p.m. N/A 1.8 ppb (2) N/A 5.0 ppb (5) N/A 1.0 ppb (1) 37.0 ppb (28) 0.11 ppb (1) 16.0 μg/m3 (15) 4.6 μg/m3 (19) 28.0
 
March 21, 2019, 6 p.m. N/A 1.3 ppb (1) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 37.0 ppb (28) 0.1 ppb (1) 14.0 μg/m3 (13) 3.6 μg/m3 (15) 28.0
 
March 21, 2019, 5 p.m. N/A 2.9 ppb (3) N/A 7.0 ppb (6) N/A 0.0 ppb (0) 32.0 ppb (25) 0.09 ppb (1) 15.0 μg/m3 (14) 2.3 μg/m3 (10) 25.0
 
March 21, 2019, 4 p.m. N/A 10.0 ppb (9) N/A 17.0 ppb (16) N/A 0.0 ppb (0) 23.0 ppb (18) 0.11 ppb (1) 25.0 μg/m3 (23) 2.8 μg/m3 (12) 23.0
 
March 21, 2019, 3 p.m. N/A 18.0 ppb (17) N/A 22.0 ppb (20) N/A 1.0 ppb (1) 10.0 ppb (8) 0.17 ppb (2) 39.0 μg/m3 (35) 7.8 μg/m3 (32) 35.0
 
March 21, 2019, 2 p.m. N/A 19.6 ppb (18) N/A 30.0 ppb (28) N/A 0.0 ppb (0) 3.0 ppb (2) 0.22 ppb (2) 36.0 μg/m3 (33) 9.2 μg/m3 (38) 38.0
 
March 21, 2019, 1 p.m. N/A -0.1 ppb (0) N/A 8.0 ppb (7) N/A 0.0 ppb (0) 25.0 ppb (19) 0.09 ppb (1) 17.0 μg/m3 (15) 3.6 μg/m3 (15) 19.0
 
March 21, 2019, noon N/A 0.2 ppb (0) N/A 15.0 ppb (14) N/A 0.0 ppb (0) 9.0 ppb (7) 0.14 ppb (2) 23.0 μg/m3 (21) 17.5 μg/m3 (62) 62.0
 
March 21, 2019, 11 a.m. N/A 0.5 ppb (0) N/A 13.0 ppb (12) N/A 0.0 ppb (0) 12.0 ppb (9) 0.13 ppb (1) 21.0 μg/m3 (19) 14.9 μg/m3 (56) 56.0
 
March 21, 2019, 10 a.m. N/A 0.6 ppb (1) N/A 11.0 ppb (10) N/A 1.0 ppb (1) 18.0 ppb (14) 0.12 ppb (1) 18.0 μg/m3 (16) 11.2 μg/m3 (47) 47.0
 
March 21, 2019, 9 a.m. N/A 0.6 ppb (1) N/A 13.0 ppb (12) N/A N/A 15.0 ppb (12) 0.16 ppb (2) 28.0 μg/m3 (25) 17.3 μg/m3 (61) 61.0
 
March 21, 2019, 8 a.m. N/A 0.8 ppb (1) N/A 22.0 ppb (20) N/A 1.0 ppb (1) 9.0 ppb (7) 0.19 ppb (2) 32.0 μg/m3 (29) 16.0 μg/m3 (59) 59.0
 
March 21, 2019, 7 a.m. N/A 1.6 ppb (1) N/A 28.0 ppb (26) N/A 1.0 ppb (1) 9.0 ppb (7) 0.25 ppb (3) 43.0 μg/m3 (39) 20.2 μg/m3 (67) 67.0
 
March 21, 2019, 6 a.m. N/A 1.5 ppb (1) N/A 25.0 ppb (23) N/A 2.0 ppb (3) 9.0 ppb (7) N/A 44.0 μg/m3 (40) 24.0 μg/m3 (76) 76.0
 
March 21, 2019, 5 a.m. N/A 0.5 ppb (0) N/A 13.0 ppb (12) N/A 2.0 ppb (3) 23.0 ppb (18) 0.23 ppb (3) 35.0 μg/m3 (32) 27.2 μg/m3 (82) 82.0
 
March 21, 2019, 4 a.m. N/A 0.6 ppb (1) N/A 15.0 ppb (14) N/A 2.0 ppb (3) 22.0 ppb (17) 0.23 ppb (3) 33.0 μg/m3 (30) 28.1 μg/m3 (84) 84.0
 
March 21, 2019, 3 a.m. N/A 0.2 ppb (0) N/A 14.0 ppb (13) N/A 3.0 ppb (4) 23.0 ppb (18) 0.24 ppb (3) 25.0 μg/m3 (23) 26.8 μg/m3 (81) 81.0
 
March 21, 2019, 2 a.m. N/A 0.0 ppb (0) N/A 12.0 ppb (11) N/A 4.0 ppb (6) 31.0 ppb (24) 0.21 ppb (2) 21.0 μg/m3 (19) 19.8 μg/m3 (67) 67.0
 
March 21, 2019, 1 a.m. N/A 1.3 ppb (1) N/A 11.0 ppb (10) N/A 1.0 ppb (1) 34.0 ppb (26) 0.13 ppb (1) 23.0 μg/m3 (21) 22.3 μg/m3 (72) 72.0
 
March 21, 2019, midnight N/A 3.2 ppb (3) N/A 14.0 ppb (13) N/A 1.0 ppb (1) 29.0 ppb (22) 0.11 ppb (1) 29.0 μg/m3 (26) 16.5 μg/m3 (60) 60.0
 
March 20, 2019, 11 p.m. N/A 1.8 ppb (2) N/A 8.0 ppb (7) N/A 1.0 ppb (1) 39.0 ppb (30) 0.11 ppb (1) 29.0 μg/m3 (26) 8.6 μg/m3 (36) 36.0
 
March 20, 2019, 10 p.m. N/A 1.5 ppb (1) N/A 7.0 ppb (6) N/A 0.0 ppb (0) 42.0 ppb (32) 0.11 ppb (1) 21.0 μg/m3 (19) 5.3 μg/m3 (22) 32.0
 
March 20, 2019, 9 p.m. N/A 1.9 ppb (2) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 41.0 ppb (32) 0.11 ppb (1) 20.0 μg/m3 (18) 4.4 μg/m3 (18) 32.0
 
March 20, 2019, 8 p.m. N/A 1.9 ppb (2) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 40.0 ppb (31) 0.11 ppb (1) 21.0 μg/m3 (19) 6.0 μg/m3 (25) 31.0
 
March 20, 2019, 7 p.m. N/A 2.0 ppb (2) N/A 7.0 ppb (6) N/A 0.0 ppb (0) 38.0 ppb (29) 0.11 ppb (1) 20.0 μg/m3 (18) 4.3 μg/m3 (18) 29.0
 
March 20, 2019, 6 p.m. N/A 2.1 ppb (2) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 38.0 ppb (29) 0.11 ppb (1) 18.0 μg/m3 (16) 3.4 μg/m3 (14) 29.0
 
March 20, 2019, 5 p.m. N/A 1.4 ppb (1) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 40.0 ppb (31) 0.1 ppb (1) 18.0 μg/m3 (16) 2.7 μg/m3 (11) 31.0
 
March 20, 2019, 4 p.m. N/A 4.4 ppb (4) N/A 12.0 ppb (11) N/A 0.0 ppb (0) 31.0 ppb (24) 0.13 ppb (1) 23.0 μg/m3 (21) 3.0 μg/m3 (12) 24.0
 
March 20, 2019, 3 p.m. N/A 1.0 ppb (1) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 37.0 ppb (28) 0.1 ppb (1) 14.0 μg/m3 (13) 2.2 μg/m3 (9) 28.0
 
March 20, 2019, 2 p.m. N/A 0.8 ppb (1) N/A 14.0 ppb (13) N/A 0.0 ppb (0) 30.0 ppb (23) 0.1 ppb (1) 16.0 μg/m3 (15) 2.9 μg/m3 (12) 23.0
 
March 20, 2019, 1 p.m. N/A 0.8 ppb (1) N/A 12.0 ppb (11) N/A 1.0 ppb (1) 28.0 ppb (22) 0.11 ppb (1) 13.0 μg/m3 (12) 2.8 μg/m3 (12) 22.0
 
March 20, 2019, noon N/A 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 40.0 ppb (31) 0.08 ppb (1) 14.0 μg/m3 (13) 1.8 μg/m3 (8) 31.0
 
March 20, 2019, 11 a.m. N/A -0.2 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 40.0 ppb (31) 0.08 ppb (1) 12.0 μg/m3 (11) 1.8 μg/m3 (8) 31.0
 
March 20, 2019, 10 a.m. N/A -0.1 ppb (0) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 36.0 ppb (28) 0.09 ppb (1) 11.0 μg/m3 (10) 2.6 μg/m3 (11) 28.0
 
March 20, 2019, 9 a.m. N/A -0.1 ppb (0) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 32.0 ppb (25) 0.11 ppb (1) 13.0 μg/m3 (12) 3.3 μg/m3 (14) 25.0
 
March 20, 2019, 8 a.m. N/A 0.2 ppb (0) N/A 6.0 ppb (6) N/A N/A 28.0 ppb (22) 0.12 ppb (1) 18.0 μg/m3 (16) 5.2 μg/m3 (22) 22.0
 
March 20, 2019, 7 a.m. N/A 0.0 ppb (0) N/A 7.0 ppb (6) N/A 0.0 ppb (0) 27.0 ppb (21) 0.12 ppb (1) 15.0 μg/m3 (14) 4.8 μg/m3 (20) 21.0
 
March 20, 2019, 6 a.m. N/A 0.1 ppb (0) N/A 8.0 ppb (7) N/A 0.0 ppb (0) 29.0 ppb (22) N/A 24.0 μg/m3 (22) 5.1 μg/m3 (21) 22.0
 
March 20, 2019, 5 a.m. N/A 0.0 ppb (0) N/A 16.0 ppb (15) N/A 0.0 ppb (0) 23.0 ppb (18) 0.15 ppb (2) 29.0 μg/m3 (26) 8.4 μg/m3 (35) 35.0
 
March 20, 2019, 4 a.m. N/A 0.6 ppb (1) N/A 22.0 ppb (20) N/A 0.0 ppb (0) 21.0 ppb (16) 0.19 ppb (2) 46.0 μg/m3 (42) 17.1 μg/m3 (61) 61.0
 
March 20, 2019, 3 a.m. N/A 0.3 ppb (0) N/A 18.0 ppb (17) N/A 0.0 ppb (0) 26.0 ppb (20) 0.17 ppb (2) 67.0 μg/m3 (56) 21.3 μg/m3 (70) 70.0
 
March 20, 2019, 2 a.m. N/A 1.0 ppb (1) N/A 15.0 ppb (14) N/A 0.0 ppb (0) 31.0 ppb (24) 0.16 ppb (2) 61.0 μg/m3 (53) 14.3 μg/m3 (55) 55.0
 
March 20, 2019, 1 a.m. N/A 0.8 ppb (1) N/A 8.0 ppb (7) N/A 0.0 ppb (0) 44.0 ppb (34) 0.14 ppb (2) 26.0 μg/m3 (24) 6.8 μg/m3 (28) 34.0
 
March 20, 2019, midnight N/A 0.8 ppb (1) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 50.0 ppb (38) 0.12 ppb (1) 21.0 μg/m3 (19) 4.5 μg/m3 (19) 38.0
 
March 19, 2019, 11 p.m. N/A 0.9 ppb (1) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 49.0 ppb (38) 0.12 ppb (1) 24.0 μg/m3 (22) 5.2 μg/m3 (22) 38.0
 
March 19, 2019, 10 p.m. N/A 1.1 ppb (1) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 49.0 ppb (38) 0.12 ppb (1) 19.0 μg/m3 (17) 5.6 μg/m3 (23) 38.0
 
March 19, 2019, 9 p.m. N/A 0.9 ppb (1) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 48.0 ppb (37) 0.11 ppb (1) 19.0 μg/m3 (17) 5.8 μg/m3 (24) 37.0
 
March 19, 2019, 8 p.m. N/A 1.4 ppb (1) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 47.0 ppb (36) 0.12 ppb (1) 22.0 μg/m3 (20) 6.4 μg/m3 (27) 36.0
 
March 19, 2019, 7 p.m. N/A 1.4 ppb (1) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 48.0 ppb (37) 0.1 ppb (1) 13.0 μg/m3 (12) 3.0 μg/m3 (12) 37.0
 
March 19, 2019, 6 p.m. N/A 0.7 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 48.0 ppb (37) 0.11 ppb (1) 9.0 μg/m3 (8) 2.2 μg/m3 (9) 37.0
 
March 19, 2019, 5 p.m. N/A 1.1 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 45.0 ppb (35) 0.1 ppb (1) 9.0 μg/m3 (8) 2.2 μg/m3 (9) 35.0
 
March 19, 2019, 4 p.m. N/A 1.3 ppb (1) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 42.0 ppb (32) 0.11 ppb (1) N/A 2.1 μg/m3 (9) 32.0
 
March 19, 2019, 3 p.m. N/A 1.6 ppb (1) N/A 12.0 ppb (11) N/A 0.0 ppb (0) 33.0 ppb (25) 0.13 ppb (1) 18.0 μg/m3 (16) 2.6 μg/m3 (11) 25.0
 
March 19, 2019, 2 p.m. N/A 0.2 ppb (0) N/A 7.0 ppb (6) N/A 0.0 ppb (0) 39.0 ppb (30) 0.11 ppb (1) 15.0 μg/m3 (14) 2.3 μg/m3 (10) 30.0
 
March 19, 2019, 1 p.m. N/A 0.4 ppb (0) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 39.0 ppb (30) 0.11 ppb (1) 8.0 μg/m3 (7) 2.1 μg/m3 (9) 30.0
 
March 19, 2019, noon N/A -0.2 ppb (0) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 39.0 ppb (30) 0.11 ppb (1) 10.0 μg/m3 (9) 2.1 μg/m3 (9) 30.0
 
March 19, 2019, 11 a.m. N/A -0.1 ppb (0) N/A 9.0 ppb (8) N/A 0.0 ppb (0) 29.0 ppb (22) 0.12 ppb (1) 19.0 μg/m3 (17) 5.1 μg/m3 (21) 22.0
 
March 19, 2019, 10 a.m. N/A 0.5 ppb (0) N/A 15.0 ppb (14) N/A 0.0 ppb (0) 23.0 ppb (18) 0.16 ppb (2) 23.0 μg/m3 (21) 7.4 μg/m3 (31) 31.0
 
March 19, 2019, 9 a.m. N/A 0.2 ppb (0) N/A 19.0 ppb (18) N/A 0.0 ppb (0) 13.0 ppb (10) 0.23 ppb (3) 25.0 μg/m3 (23) 14.7 μg/m3 (56) 56.0
 
March 19, 2019, 8 a.m. N/A 0.5 ppb (0) N/A 14.0 ppb (13) N/A 0.0 ppb (0) 21.0 ppb (16) 0.19 ppb (2) 15.0 μg/m3 (14) 9.3 μg/m3 (39) 39.0
 
March 19, 2019, 7 a.m. N/A 0.3 ppb (0) N/A 4.0 ppb (4) N/A N/A 36.0 ppb (28) 0.12 ppb (1) 15.0 μg/m3 (14) 6.5 μg/m3 (27) 28.0
 
March 19, 2019, 6 a.m. N/A 0.2 ppb (0) N/A 11.0 ppb (10) N/A 0.0 ppb (0) 28.0 ppb (22) N/A 29.0 μg/m3 (26) 16.7 μg/m3 (60) 60.0
 
March 19, 2019, 5 a.m. N/A 0.1 ppb (0) N/A 12.0 ppb (11) N/A 0.0 ppb (0) 18.0 ppb (14) 0.26 ppb (3) 49.0 μg/m3 (45) 37.1 μg/m3 (104) 104.0
 
March 19, 2019, 4 a.m. N/A 0.3 ppb (0) N/A 14.0 ppb (13) N/A 0.0 ppb (0) 22.0 ppb (17) 0.2 ppb (2) 29.0 μg/m3 (26) 27.9 μg/m3 (84) 84.0
 
March 19, 2019, 3 a.m. N/A 0.2 ppb (0) N/A 13.0 ppb (12) N/A 0.0 ppb (0) 26.0 ppb (20) 0.17 ppb (2) 24.0 μg/m3 (22) 22.3 μg/m3 (72) 72.0
 
March 19, 2019, 2 a.m. N/A 0.7 ppb (1) N/A 15.0 ppb (14) N/A 1.0 ppb (1) 23.0 ppb (18) 0.19 ppb (2) 28.0 μg/m3 (25) 19.6 μg/m3 (66) 66.0
 
March 19, 2019, 1 a.m. N/A 1.1 ppb (1) N/A 10.0 ppb (9) N/A 0.0 ppb (0) 33.0 ppb (25) 0.16 ppb (2) 27.0 μg/m3 (25) 14.3 μg/m3 (55) 55.0
 
March 19, 2019, midnight N/A 1.1 ppb (1) N/A 7.0 ppb (6) N/A 0.0 ppb (0) 47.0 ppb (36) 0.13 ppb (1) 17.0 μg/m3 (15) 4.8 μg/m3 (20) 36.0
 
March 18, 2019, 11 p.m. N/A 0.7 ppb (1) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 48.0 ppb (37) 0.12 ppb (1) 14.0 μg/m3 (13) 4.0 μg/m3 (17) 37.0
 
March 18, 2019, 10 p.m. N/A 1.2 ppb (1) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 48.0 ppb (37) 0.12 ppb (1) 18.0 μg/m3 (16) 3.7 μg/m3 (15) 37.0
 
March 18, 2019, 9 p.m. N/A 2.0 ppb (2) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 46.0 ppb (35) 0.11 ppb (1) 14.0 μg/m3 (13) 4.0 μg/m3 (17) 35.0
 
March 18, 2019, 8 p.m. N/A 0.5 ppb (0) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 45.0 ppb (35) 0.11 ppb (1) 13.0 μg/m3 (12) 3.0 μg/m3 (12) 35.0
 
March 18, 2019, 7 p.m. N/A 1.5 ppb (1) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 43.0 ppb (33) 0.11 ppb (1) 14.0 μg/m3 (13) 2.8 μg/m3 (12) 33.0
 
March 18, 2019, 6 p.m. N/A 1.7 ppb (2) N/A 8.0 ppb (7) N/A 0.0 ppb (0) 41.0 ppb (32) 0.11 ppb (1) 16.0 μg/m3 (15) 2.4 μg/m3 (10) 32.0
 
March 18, 2019, 5 p.m. N/A 3.0 ppb (3) N/A 9.0 ppb (8) N/A 0.0 ppb (0) 35.0 ppb (27) 0.11 ppb (1) 21.0 μg/m3 (19) 2.8 μg/m3 (12) 27.0
 
March 18, 2019, 4 p.m. N/A 2.9 ppb (3) N/A 9.0 ppb (8) N/A 0.0 ppb (0) 37.0 ppb (28) 0.1 ppb (1) 18.0 μg/m3 (16) 2.2 μg/m3 (9) 28.0
 
March 18, 2019, 3 p.m. N/A 3.8 ppb (4) N/A 16.0 ppb (15) N/A 0.0 ppb (0) 28.0 ppb (22) 0.12 ppb (1) 17.0 μg/m3 (15) 2.6 μg/m3 (11) 22.0
 
March 18, 2019, 2 p.m. N/A 1.6 ppb (1) N/A 15.0 ppb (14) N/A 1.0 ppb (1) 27.0 ppb (21) 0.12 ppb (1) 16.0 μg/m3 (15) 2.6 μg/m3 (11) 21.0
 
March 18, 2019, 1 p.m. N/A 0.6 ppb (1) N/A 10.0 ppb (9) N/A 0.0 ppb (0) 30.0 ppb (23) 0.11 ppb (1) 17.0 μg/m3 (15) 3.2 μg/m3 (13) 23.0
 
March 18, 2019, noon N/A 0.2 ppb (0) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 31.0 ppb (24) 0.11 ppb (1) 11.0 μg/m3 (10) 2.9 μg/m3 (12) 24.0
 
March 18, 2019, 11 a.m. N/A 0.1 ppb (0) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 34.0 ppb (26) 0.1 ppb (1) 9.0 μg/m3 (8) 2.7 μg/m3 (11) 26.0
 
March 18, 2019, 10 a.m. N/A -0.1 ppb (0) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 34.0 ppb (26) 0.1 ppb (1) 8.0 μg/m3 (7) 3.0 μg/m3 (12) 26.0
 
March 18, 2019, 9 a.m. N/A 0.0 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 33.0 ppb (25) 0.12 ppb (1) 7.0 μg/m3 (6) 8.0 μg/m3 (33) 33.0
 
March 18, 2019, 8 a.m. N/A 0.0 ppb (0) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 35.0 ppb (27) 0.12 ppb (1) 2.0 μg/m3 (2) 3.2 μg/m3 (13) 27.0
 
March 18, 2019, 7 a.m. N/A -0.1 ppb (0) N/A 7.0 ppb (6) N/A 0.0 ppb (0) 24.0 ppb (18) 0.14 ppb (2) 13.0 μg/m3 (12) 7.4 μg/m3 (31) 31.0
 
March 18, 2019, 6 a.m. N/A 0.2 ppb (0) N/A 8.0 ppb (7) N/A N/A 23.0 ppb (18) N/A 13.0 μg/m3 (12) 7.9 μg/m3 (33) 33.0
 
March 18, 2019, 5 a.m. N/A 2.6 ppb (2) N/A 24.0 ppb (22) N/A 0.0 ppb (0) 7.0 ppb (5) 0.25 ppb (3) 35.0 μg/m3 (32) 16.6 μg/m3 (60) 60.0
 
March 18, 2019, 4 a.m. N/A 0.1 ppb (0) N/A 7.0 ppb (6) N/A 0.0 ppb (0) 22.0 ppb (17) 0.17 ppb (2) 25.0 μg/m3 (23) 24.8 μg/m3 (77) 77.0
 
March 18, 2019, 3 a.m. N/A 0.5 ppb (0) N/A 10.0 ppb (9) N/A 0.0 ppb (0) 21.0 ppb (16) 0.22 ppb (2) 25.0 μg/m3 (23) 32.0 μg/m3 (93) 93.0
 
March 18, 2019, 2 a.m. N/A 0.4 ppb (0) N/A 9.0 ppb (8) N/A 1.0 ppb (1) 24.0 ppb (18) 0.15 ppb (2) 16.0 μg/m3 (15) 17.8 μg/m3 (62) 62.0
 
March 18, 2019, 1 a.m. N/A 1.1 ppb (1) N/A 10.0 ppb (9) N/A 1.0 ppb (1) 24.0 ppb (18) 0.13 ppb (1) 15.0 μg/m3 (14) 12.5 μg/m3 (51) 51.0
 
March 18, 2019, midnight N/A 1.4 ppb (1) N/A 7.0 ppb (6) N/A 1.0 ppb (1) 29.0 ppb (22) 0.13 ppb (1) 16.0 μg/m3 (15) 11.5 μg/m3 (48) 48.0
 
March 17, 2019, 11 p.m. N/A 0.9 ppb (1) N/A 5.0 ppb (5) N/A 1.0 ppb (1) 35.0 ppb (27) 0.12 ppb (1) 17.0 μg/m3 (15) 11.1 μg/m3 (46) 46.0
 
March 17, 2019, 10 p.m. N/A 0.8 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 40.0 ppb (31) 0.11 ppb (1) 10.0 μg/m3 (9) 5.0 μg/m3 (21) 31.0
 
March 17, 2019, 9 p.m. N/A 0.6 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 38.0 ppb (29) 0.11 ppb (1) 8.0 μg/m3 (7) 5.4 μg/m3 (23) 29.0
 
March 17, 2019, 8 p.m. N/A 1.2 ppb (1) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 37.0 ppb (28) 0.11 ppb (1) 7.0 μg/m3 (6) 4.0 μg/m3 (17) 28.0
 
March 17, 2019, 7 p.m. N/A 2.7 ppb (3) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 34.0 ppb (26) 0.12 ppb (1) 7.0 μg/m3 (6) 3.2 μg/m3 (13) 26.0
 
March 17, 2019, 6 p.m. N/A 2.5 ppb (2) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 30.0 ppb (23) 0.12 ppb (1) 9.0 μg/m3 (8) 3.3 μg/m3 (14) 23.0
 
March 17, 2019, 5 p.m. N/A 4.0 ppb (4) N/A 7.0 ppb (6) N/A 0.0 ppb (0) 24.0 ppb (18) 0.13 ppb (1) 11.0 μg/m3 (10) 3.7 μg/m3 (15) 18.0
 
March 17, 2019, 3 p.m. N/A 2.6 ppb (2) N/A 8.0 ppb (7) N/A 0.0 ppb (0) 21.0 ppb (16) 0.11 ppb (1) 13.0 μg/m3 (12) 3.3 μg/m3 (14) 16.0
 
March 17, 2019, 2 p.m. N/A 0.3 ppb (0) N/A 8.0 ppb (7) N/A 0.0 ppb (0) 17.0 ppb (13) 0.12 ppb (1) 10.0 μg/m3 (9) 4.1 μg/m3 (17) 17.0
 
March 17, 2019, 1 p.m. N/A 0.7 ppb (1) N/A 10.0 ppb (9) N/A 0.0 ppb (0) 12.0 ppb (9) 0.14 ppb (2) 13.0 μg/m3 (12) 6.2 μg/m3 (26) 26.0
 
March 17, 2019, noon N/A 0.9 ppb (1) N/A 14.0 ppb (13) N/A 0.0 ppb (0) 9.0 ppb (7) 0.17 ppb (2) 17.0 μg/m3 (15) 8.3 μg/m3 (35) 35.0
 
March 17, 2019, 11 a.m. N/A 0.6 ppb (1) N/A 16.0 ppb (15) N/A 0.0 ppb (0) 7.0 ppb (5) 0.2 ppb (2) 24.0 μg/m3 (22) 14.4 μg/m3 (55) 55.0
 
March 17, 2019, 10 a.m. N/A 0.7 ppb (1) N/A 17.0 ppb (16) N/A 0.0 ppb (0) 5.0 ppb (4) 0.24 ppb (3) 28.0 μg/m3 (25) 23.3 μg/m3 (74) 74.0
 
March 17, 2019, 9 a.m. N/A 0.3 ppb (0) N/A 10.0 ppb (9) N/A 0.0 ppb (0) 11.0 ppb (8) 0.22 ppb (2) 26.0 μg/m3 (24) 24.4 μg/m3 (76) 76.0
 
March 17, 2019, 8 a.m. N/A -0.1 ppb (0) N/A 9.0 ppb (8) N/A 0.0 ppb (0) 14.0 ppb (11) 0.21 ppb (2) 26.0 μg/m3 (24) 24.3 μg/m3 (76) 76.0
 
March 17, 2019, 7 a.m. N/A 0.7 ppb (1) N/A 9.0 ppb (8) N/A 0.0 ppb (0) 15.0 ppb (12) 0.2 ppb (2) 27.0 μg/m3 (25) 21.0 μg/m3 (69) 69.0
 
March 17, 2019, 6 a.m. N/A 1.3 ppb (1) N/A 10.0 ppb (9) N/A 0.0 ppb (0) 15.0 ppb (12) 0.19 ppb (2) 24.0 μg/m3 (22) 20.6 μg/m3 (68) 68.0
 
March 17, 2019, 5 a.m. N/A 0.6 ppb (1) N/A 7.0 ppb (6) N/A N/A 21.0 ppb (16) 0.18 ppb (2) 18.0 μg/m3 (16) 16.6 μg/m3 (60) 60.0
 
March 17, 2019, 4 a.m. N/A 0.2 ppb (0) N/A 7.0 ppb (6) N/A 0.0 ppb (0) 26.0 ppb (20) 0.17 ppb (2) 16.0 μg/m3 (15) 14.7 μg/m3 (56) 56.0
 
March 17, 2019, 3 a.m. N/A -0.3 ppb (0) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 25.0 ppb (19) 0.17 ppb (2) 16.0 μg/m3 (15) 16.7 μg/m3 (60) 60.0
 
March 17, 2019, 2 a.m. N/A -0.2 ppb (0) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 30.0 ppb (23) N/A 12.0 μg/m3 (11) 12.2 μg/m3 (50) 50.0
 
March 17, 2019, 1 a.m. N/A 0.5 ppb (0) N/A 8.0 ppb (7) N/A 1.0 ppb (1) 25.0 ppb (19) 0.11 ppb (1) 14.0 μg/m3 (13) 13.9 μg/m3 (54) 54.0
 
March 17, 2019, midnight N/A 0.7 ppb (1) N/A 8.0 ppb (7) N/A 1.0 ppb (1) 26.0 ppb (20) 0.12 ppb (1) 15.0 μg/m3 (14) 14.0 μg/m3 (54) 54.0
 
March 16, 2019, 11 p.m. N/A 0.7 ppb (1) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 36.0 ppb (28) 0.1 ppb (1) 15.0 μg/m3 (14) 12.2 μg/m3 (50) 50.0
 
March 16, 2019, 10 p.m. N/A 0.8 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 42.0 ppb (32) 0.11 ppb (1) 11.0 μg/m3 (10) 7.7 μg/m3 (32) 32.0
 
March 16, 2019, 9 p.m. N/A 0.7 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 40.0 ppb (31) 0.11 ppb (1) 8.0 μg/m3 (7) 5.2 μg/m3 (22) 31.0
 
March 16, 2019, 8 p.m. N/A 2.9 ppb (3) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 34.0 ppb (26) 0.12 ppb (1) 15.0 μg/m3 (14) 6.5 μg/m3 (27) 27.0
 
March 16, 2019, 7 p.m. N/A 5.7 ppb (5) N/A 8.0 ppb (7) N/A 0.0 ppb (0) 27.0 ppb (21) 0.14 ppb (2) 16.0 μg/m3 (15) 8.5 μg/m3 (35) 35.0
 
March 16, 2019, 6 p.m. N/A 3.2 ppb (3) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 28.0 ppb (22) 0.12 ppb (1) 12.0 μg/m3 (11) 3.6 μg/m3 (15) 22.0
 
March 16, 2019, 5 p.m. N/A 4.3 ppb (4) N/A 9.0 ppb (8) N/A 0.0 ppb (0) 24.0 ppb (18) 0.13 ppb (1) 14.0 μg/m3 (13) 4.3 μg/m3 (18) 18.0
 
March 16, 2019, 4 p.m. N/A 4.6 ppb (4) N/A 11.0 ppb (10) N/A 0.0 ppb (0) 19.0 ppb (15) 0.13 ppb (1) 16.0 μg/m3 (15) 3.4 μg/m3 (14) 15.0
 
March 16, 2019, 3 p.m. N/A 3.1 ppb (3) N/A 12.0 ppb (11) N/A 0.0 ppb (0) 14.0 ppb (11) 0.15 ppb (2) 14.0 μg/m3 (13) 3.7 μg/m3 (15) 15.0
 
March 16, 2019, 2 p.m. N/A 1.1 ppb (1) N/A 11.0 ppb (10) N/A 0.0 ppb (0) 15.0 ppb (12) 0.12 ppb (1) 11.0 μg/m3 (10) 3.4 μg/m3 (14) 14.0
 
March 16, 2019, 1 p.m. N/A 0.8 ppb (1) N/A 10.0 ppb (9) N/A 0.0 ppb (0) 15.0 ppb (12) 0.13 ppb (1) 12.0 μg/m3 (11) 4.0 μg/m3 (17) 17.0
 
March 16, 2019, noon N/A 1.0 ppb (1) N/A 11.0 ppb (10) N/A 0.0 ppb (0) 14.0 ppb (11) 0.13 ppb (1) 14.0 μg/m3 (13) 4.8 μg/m3 (20) 20.0
 
March 16, 2019, 11 a.m. N/A 0.3 ppb (0) N/A 9.0 ppb (8) N/A 0.0 ppb (0) 16.0 ppb (12) 0.14 ppb (2) 11.0 μg/m3 (10) 5.1 μg/m3 (21) 21.0
 
March 16, 2019, 10 a.m. N/A 0.4 ppb (0) N/A 10.0 ppb (9) N/A 0.0 ppb (0) 15.0 ppb (12) 0.14 ppb (2) 9.0 μg/m3 (8) 4.9 μg/m3 (20) 20.0
 
March 16, 2019, 9 a.m. N/A 0.1 ppb (0) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 21.0 ppb (16) 0.12 ppb (1) 8.0 μg/m3 (7) 3.7 μg/m3 (15) 16.0
 
March 16, 2019, 8 a.m. N/A 0.5 ppb (0) N/A 9.0 ppb (8) N/A 0.0 ppb (0) 19.0 ppb (15) 0.13 ppb (1) 10.0 μg/m3 (9) 4.2 μg/m3 (18) 18.0
 
March 16, 2019, 7 a.m. N/A 0.2 ppb (0) N/A 11.0 ppb (10) N/A 0.0 ppb (0) 17.0 ppb (13) 0.15 ppb (2) 13.0 μg/m3 (12) 4.8 μg/m3 (20) 20.0
 
March 16, 2019, 6 a.m. N/A 0.2 ppb (0) N/A 10.0 ppb (9) N/A 0.0 ppb (0) 19.0 ppb (15) 0.16 ppb (2) 14.0 μg/m3 (13) 4.9 μg/m3 (20) 20.0
 
March 16, 2019, 5 a.m. N/A 0.4 ppb (0) N/A 8.0 ppb (7) N/A 0.0 ppb (0) 23.0 ppb (18) 0.14 ppb (2) 13.0 μg/m3 (12) 4.9 μg/m3 (20) 20.0
 
March 16, 2019, 4 a.m. N/A -0.1 ppb (0) N/A 12.0 ppb (11) N/A N/A 25.0 ppb (19) 0.15 ppb (2) 19.0 μg/m3 (17) 6.8 μg/m3 (28) 28.0
 
March 16, 2019, 3 a.m. N/A 0.0 ppb (0) N/A 16.0 ppb (15) N/A 0.0 ppb (0) 23.0 ppb (18) 0.2 ppb (2) 25.0 μg/m3 (23) 6.6 μg/m3 (28) 28.0
 
March 16, 2019, 2 a.m. N/A -0.1 ppb (0) N/A 9.0 ppb (8) N/A 0.0 ppb (0) 30.0 ppb (23) N/A 26.0 μg/m3 (24) 4.8 μg/m3 (20) 24.0
 
March 16, 2019, 1 a.m. N/A 0.3 ppb (0) N/A 7.0 ppb (6) N/A 0.0 ppb (0) 40.0 ppb (31) 0.13 ppb (1) 12.0 μg/m3 (11) 4.5 μg/m3 (19) 31.0
 
March 16, 2019, midnight N/A 0.2 ppb (0) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 39.0 ppb (30) 0.13 ppb (1) 10.0 μg/m3 (9) 5.0 μg/m3 (21) 30.0
 
March 15, 2019, 11 p.m. N/A 0.7 ppb (1) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 42.0 ppb (32) 0.12 ppb (1) 8.0 μg/m3 (7) 3.8 μg/m3 (16) 32.0
 
March 15, 2019, 10 p.m. N/A 0.6 ppb (1) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 43.0 ppb (33) 0.11 ppb (1) 8.0 μg/m3 (7) 5.0 μg/m3 (21) 33.0
 
March 15, 2019, 9 p.m. N/A 0.4 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 44.0 ppb (34) 0.11 ppb (1) 7.0 μg/m3 (6) 5.4 μg/m3 (23) 34.0
 
March 15, 2019, 8 p.m. N/A 0.7 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 42.0 ppb (32) 0.12 ppb (1) 9.0 μg/m3 (8) 4.6 μg/m3 (19) 32.0
 
March 15, 2019, 7 p.m. N/A 4.5 ppb (4) N/A 8.0 ppb (7) N/A 0.0 ppb (0) 30.0 ppb (23) 0.14 ppb (2) 16.0 μg/m3 (15) 6.2 μg/m3 (26) 26.0
 
March 15, 2019, 6 p.m. N/A 10.0 ppb (9) N/A 12.0 ppb (11) N/A 0.0 ppb (0) 18.0 ppb (14) 0.16 ppb (2) 19.0 μg/m3 (17) 5.5 μg/m3 (23) 23.0
 
March 15, 2019, 5 p.m. N/A 18.4 ppb (17) N/A 17.0 ppb (16) N/A 0.0 ppb (0) 11.0 ppb (8) 0.18 ppb (2) 23.0 μg/m3 (21) 6.1 μg/m3 (25) 25.0
 
March 15, 2019, 4 p.m. N/A 23.4 ppb (22) N/A 20.0 ppb (19) N/A 0.0 ppb (0) 5.0 ppb (4) 0.21 ppb (2) 22.0 μg/m3 (20) 7.1 μg/m3 (30) 30.0
 
March 15, 2019, 3 p.m. N/A 11.9 ppb (11) N/A 20.0 ppb (19) N/A 0.0 ppb (0) 3.0 ppb (2) 0.19 ppb (2) 16.0 μg/m3 (15) 6.4 μg/m3 (27) 27.0
 
March 15, 2019, 2 p.m. N/A 5.5 ppb (5) N/A 18.0 ppb (17) N/A 0.0 ppb (0) 3.0 ppb (2) 0.17 ppb (2) 13.0 μg/m3 (12) 6.5 μg/m3 (27) 27.0
 
March 15, 2019, 1 p.m. N/A 1.0 ppb (1) N/A 12.0 ppb (11) N/A 0.0 ppb (0) 10.0 ppb (8) 0.15 ppb (2) 10.0 μg/m3 (9) 5.2 μg/m3 (22) 22.0
 
March 15, 2019, noon N/A 0.4 ppb (0) N/A 8.0 ppb (7) N/A 0.0 ppb (0) 14.0 ppb (11) 0.14 ppb (2) 9.0 μg/m3 (8) 4.7 μg/m3 (20) 20.0
 
March 15, 2019, 11 a.m. N/A 0.6 ppb (1) N/A 7.0 ppb (6) N/A 0.0 ppb (0) 16.0 ppb (12) 0.14 ppb (2) 9.0 μg/m3 (8) 4.7 μg/m3 (20) 20.0
 
March 15, 2019, 10 a.m. N/A 0.2 ppb (0) N/A 7.0 ppb (6) N/A 0.0 ppb (0) 16.0 ppb (12) 0.14 ppb (2) 8.0 μg/m3 (7) 4.4 μg/m3 (18) 18.0
 
March 15, 2019, 9 a.m. N/A 0.1 ppb (0) N/A 7.0 ppb (6) N/A 0.0 ppb (0) 16.0 ppb (12) 0.14 ppb (2) 9.0 μg/m3 (8) 4.2 μg/m3 (18) 18.0
 
March 15, 2019, 8 a.m. N/A 0.1 ppb (0) N/A 7.0 ppb (6) N/A 0.0 ppb (0) 18.0 ppb (14) 0.14 ppb (2) 8.0 μg/m3 (7) 3.6 μg/m3 (15) 15.0
 
March 15, 2019, 7 a.m. N/A 0.1 ppb (0) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 23.0 ppb (18) 0.13 ppb (1) 7.0 μg/m3 (6) 2.6 μg/m3 (11) 18.0
 
March 15, 2019, 6 a.m. N/A -0.2 ppb (0) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 22.0 ppb (17) 0.13 ppb (1) 9.0 μg/m3 (8) 3.5 μg/m3 (15) 17.0
 
March 15, 2019, 5 a.m. N/A -0.2 ppb (0) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 26.0 ppb (20) 0.11 ppb (1) 8.0 μg/m3 (7) 3.0 μg/m3 (12) 20.0
 
March 15, 2019, 4 a.m. N/A 0.1 ppb (0) N/A 9.0 ppb (8) N/A 0.0 ppb (0) 22.0 ppb (17) 0.14 ppb (2) 14.0 μg/m3 (13) 4.9 μg/m3 (20) 20.0