AQSQID: 000090228

Site Name: Calgary Central2

Location: Calgary (5 St SW), CC

Reporting: True, Located: True

Current AQI: 78.0

Calgary (5 St SW) CC, CA: 51.047611, -114.075165

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
March 20, 2019, 2 a.m. N/A N/A N/A 53.0 ppb (49) N/A N/A 5.0 ppb (4) 0.55 ppb (6) N/A 25.0 μg/m3 (78) 78.0
 
March 20, 2019, 1 a.m. N/A N/A N/A 25.0 ppb (23) N/A N/A 35.0 ppb (27) 0.35 ppb (4) N/A 11.7 μg/m3 (49) 49.0
 
March 20, 2019, midnight N/A N/A N/A 9.0 ppb (8) N/A N/A 53.0 ppb (41) 0.23 ppb (3) N/A 6.5 μg/m3 (27) 41.0
 
March 19, 2019, 11 p.m. N/A N/A N/A 15.0 ppb (14) N/A N/A 51.0 ppb (39) 0.27 ppb (3) N/A 8.3 μg/m3 (35) 39.0
 
March 19, 2019, 10 p.m. N/A N/A N/A 17.0 ppb (16) N/A N/A 49.0 ppb (38) 0.3 ppb (3) N/A 9.5 μg/m3 (40) 40.0
 
March 19, 2019, 9 p.m. N/A N/A N/A 24.0 ppb (22) N/A N/A 42.0 ppb (32) 0.34 ppb (4) N/A 18.3 μg/m3 (63) 63.0
 
March 19, 2019, 8 p.m. N/A N/A N/A 10.0 ppb (9) N/A N/A 52.0 ppb (40) 0.24 ppb (3) N/A 6.2 μg/m3 (26) 40.0
 
March 19, 2019, 7 p.m. N/A N/A N/A 20.0 ppb (19) N/A N/A 39.0 ppb (30) 0.28 ppb (3) N/A 8.1 μg/m3 (34) 34.0
 
March 19, 2019, 6 p.m. N/A N/A N/A 15.0 ppb (14) N/A N/A 39.0 ppb (30) 0.27 ppb (3) N/A 5.5 μg/m3 (23) 30.0
 
March 19, 2019, 5 p.m. N/A N/A N/A 17.0 ppb (16) N/A N/A 35.0 ppb (27) 0.28 ppb (3) N/A 5.9 μg/m3 (25) 27.0
 
March 19, 2019, 4 p.m. N/A N/A N/A 19.0 ppb (18) N/A N/A 32.0 ppb (25) 0.27 ppb (3) N/A 5.9 μg/m3 (25) 25.0
 
March 19, 2019, 3 p.m. N/A N/A N/A 21.0 ppb (19) N/A N/A 28.0 ppb (22) 0.28 ppb (3) N/A 5.2 μg/m3 (22) 22.0
 
March 19, 2019, 2 p.m. N/A N/A N/A 32.0 ppb (30) N/A N/A 17.0 ppb (13) 0.34 ppb (4) N/A 5.0 μg/m3 (21) 30.0
 
March 19, 2019, 1 p.m. N/A N/A N/A 26.0 ppb (24) N/A N/A 21.0 ppb (16) 0.26 ppb (3) N/A 3.6 μg/m3 (15) 24.0
 
March 19, 2019, noon N/A N/A N/A 34.0 ppb (31) N/A N/A 16.0 ppb (12) 0.34 ppb (4) N/A 3.7 μg/m3 (15) 31.0
 
March 19, 2019, 11 a.m. N/A N/A N/A 29.0 ppb (27) N/A N/A 19.0 ppb (15) 0.23 ppb (3) N/A 3.4 μg/m3 (14) 27.0
 
March 19, 2019, 10 a.m. N/A N/A N/A 35.0 ppb (32) N/A N/A 13.0 ppb (10) 0.26 ppb (3) N/A 4.5 μg/m3 (19) 32.0
 
March 19, 2019, 9 a.m. N/A N/A N/A 46.0 ppb (43) N/A N/A 5.0 ppb (4) 0.35 ppb (4) N/A 58.4 μg/m3 (152) 152.0
 
March 19, 2019, 8 a.m. N/A N/A N/A 55.0 ppb (51) N/A N/A 2.0 ppb (2) 0.4 ppb (4) N/A 15.7 μg/m3 (58) 58.0
 
March 19, 2019, 7 a.m. N/A N/A N/A 55.0 ppb (51) N/A N/A 1.0 ppb (1) 0.59 ppb (7) N/A 18.1 μg/m3 (63) 63.0
 
March 19, 2019, 6 a.m. N/A N/A N/A 54.0 ppb (50) N/A N/A 1.0 ppb (1) 0.67 ppb (7) N/A 19.8 μg/m3 (67) 67.0
 
March 19, 2019, 5 a.m. N/A N/A N/A 54.0 ppb (50) N/A N/A 1.0 ppb (1) 0.62 ppb (7) N/A 22.5 μg/m3 (72) 72.0
 
March 19, 2019, 4 a.m. N/A N/A N/A 51.0 ppb (47) N/A N/A 6.0 ppb (5) 0.52 ppb (6) N/A 20.3 μg/m3 (68) 68.0
 
March 19, 2019, 3 a.m. N/A N/A N/A 36.0 ppb (33) N/A N/A 22.0 ppb (17) 0.38 ppb (4) N/A 15.3 μg/m3 (57) 57.0
 
March 19, 2019, 2 a.m. N/A N/A N/A 32.0 ppb (30) N/A N/A 28.0 ppb (22) 0.36 ppb (4) N/A 17.0 μg/m3 (61) 61.0
 
March 19, 2019, 1 a.m. N/A N/A N/A 18.0 ppb (17) N/A N/A 44.0 ppb (34) 0.28 ppb (3) N/A 15.7 μg/m3 (58) 58.0
 
March 19, 2019, midnight N/A N/A N/A 12.0 ppb (11) N/A N/A 51.0 ppb (39) 0.24 ppb (3) N/A 10.5 μg/m3 (44) 44.0
 
March 18, 2019, 11 p.m. N/A N/A N/A 12.0 ppb (11) N/A N/A 51.0 ppb (39) 0.24 ppb (3) N/A 9.1 μg/m3 (38) 39.0
 
March 18, 2019, 10 p.m. N/A N/A N/A 10.0 ppb (9) N/A N/A 53.0 ppb (41) 0.23 ppb (3) N/A 7.7 μg/m3 (32) 41.0
 
March 18, 2019, 9 p.m. N/A N/A N/A 8.0 ppb (7) N/A N/A 53.0 ppb (41) 0.21 ppb (2) N/A 6.1 μg/m3 (25) 41.0
 
March 18, 2019, 8 p.m. N/A N/A N/A 5.0 ppb (5) N/A N/A 56.0 ppb (43) 0.19 ppb (2) N/A 2.8 μg/m3 (12) 43.0
 
March 18, 2019, 7 p.m. N/A N/A N/A 5.0 ppb (5) N/A N/A 54.0 ppb (42) 0.19 ppb (2) N/A 2.9 μg/m3 (12) 42.0
 
March 18, 2019, 6 p.m. N/A N/A N/A 7.0 ppb (6) N/A N/A 48.0 ppb (37) 0.21 ppb (2) N/A 4.8 μg/m3 (20) 37.0
 
March 18, 2019, 5 p.m. N/A N/A N/A 10.0 ppb (9) N/A N/A 42.0 ppb (32) 0.23 ppb (3) N/A 6.3 μg/m3 (26) 32.0
 
March 18, 2019, 4 p.m. N/A N/A N/A 11.0 ppb (10) N/A N/A 40.0 ppb (31) 0.23 ppb (3) N/A 6.5 μg/m3 (27) 31.0
 
March 18, 2019, 3 p.m. N/A N/A N/A 18.0 ppb (17) N/A N/A 32.0 ppb (25) 0.26 ppb (3) N/A 6.6 μg/m3 (28) 28.0
 
March 18, 2019, 2 p.m. N/A N/A N/A 36.0 ppb (33) N/A N/A 15.0 ppb (12) 0.41 ppb (5) N/A 8.9 μg/m3 (37) 37.0
 
March 18, 2019, 1 p.m. N/A N/A N/A 29.0 ppb (27) N/A N/A 19.0 ppb (15) 0.29 ppb (3) N/A 6.5 μg/m3 (27) 27.0
 
March 18, 2019, noon N/A N/A N/A 22.0 ppb (20) N/A N/A 26.0 ppb (20) 0.23 ppb (3) N/A 4.7 μg/m3 (20) 20.0
 
March 18, 2019, 11 a.m. N/A N/A N/A 14.0 ppb (13) N/A N/A 34.0 ppb (26) 0.19 ppb (2) N/A 3.5 μg/m3 (15) 26.0
 
March 18, 2019, 10 a.m. N/A N/A N/A 13.0 ppb (12) N/A N/A 34.0 ppb (26) 0.18 ppb (2) N/A 3.0 μg/m3 (12) 26.0
 
March 18, 2019, 9 a.m. N/A N/A N/A 13.0 ppb (12) N/A N/A 33.0 ppb (25) 0.18 ppb (2) N/A 3.8 μg/m3 (16) 25.0
 
March 18, 2019, 8 a.m. N/A N/A N/A 11.0 ppb (10) N/A N/A 35.0 ppb (27) 0.18 ppb (2) N/A 3.6 μg/m3 (15) 27.0
 
March 18, 2019, 7 a.m. N/A N/A N/A 17.0 ppb (16) N/A N/A 28.0 ppb (22) 0.22 ppb (2) N/A 4.6 μg/m3 (19) 22.0
 
March 18, 2019, 6 a.m. N/A N/A N/A 36.0 ppb (33) N/A N/A 13.0 ppb (10) 0.32 ppb (4) N/A 7.5 μg/m3 (31) 33.0
 
March 18, 2019, 5 a.m. N/A N/A N/A 36.0 ppb (33) N/A N/A 10.0 ppb (8) 0.35 ppb (4) N/A 8.9 μg/m3 (37) 37.0
 
March 18, 2019, 4 a.m. N/A N/A N/A 38.0 ppb (35) N/A N/A 14.0 ppb (11) 0.34 ppb (4) N/A 8.8 μg/m3 (37) 37.0
 
March 18, 2019, 3 a.m. N/A N/A N/A 25.0 ppb (23) N/A N/A 23.0 ppb (18) 0.31 ppb (3) N/A 8.5 μg/m3 (35) 35.0
 
March 18, 2019, 2 a.m. N/A N/A N/A 19.0 ppb (18) N/A N/A 35.0 ppb (27) 0.26 ppb (3) N/A 8.2 μg/m3 (34) 34.0
 
March 18, 2019, 1 a.m. N/A N/A N/A 6.0 ppb (6) N/A N/A 47.0 ppb (36) 0.19 ppb (2) N/A 4.2 μg/m3 (18) 36.0
 
March 18, 2019, midnight N/A N/A N/A 6.0 ppb (6) N/A N/A 50.0 ppb (38) 0.19 ppb (2) N/A 3.9 μg/m3 (16) 38.0
 
March 17, 2019, 11 p.m. N/A N/A N/A 3.0 ppb (3) N/A N/A 54.0 ppb (42) 0.19 ppb (2) N/A 4.3 μg/m3 (18) 42.0
 
March 17, 2019, 10 p.m. N/A N/A N/A 4.0 ppb (4) N/A N/A 53.0 ppb (41) 0.2 ppb (2) N/A 5.2 μg/m3 (22) 41.0
 
March 17, 2019, 9 p.m. N/A N/A N/A 4.0 ppb (4) N/A N/A 52.0 ppb (40) 0.19 ppb (2) N/A 4.1 μg/m3 (17) 40.0
 
March 17, 2019, 8 p.m. N/A N/A N/A 4.0 ppb (4) N/A N/A 50.0 ppb (38) 0.19 ppb (2) N/A 4.3 μg/m3 (18) 38.0
 
March 17, 2019, 7 p.m. N/A N/A N/A 7.0 ppb (6) N/A N/A 47.0 ppb (36) 0.21 ppb (2) N/A 7.8 μg/m3 (32) 36.0
 
March 17, 2019, 6 p.m. N/A N/A N/A 10.0 ppb (9) N/A N/A 43.0 ppb (33) 0.24 ppb (3) N/A 9.9 μg/m3 (41) 41.0
 
March 17, 2019, 5 p.m. N/A N/A N/A 19.0 ppb (18) N/A N/A 33.0 ppb (25) 0.31 ppb (3) N/A 15.8 μg/m3 (58) 58.0
 
March 17, 2019, 4 p.m. N/A N/A N/A 16.0 ppb (15) N/A N/A 30.0 ppb (23) 0.34 ppb (4) N/A 20.7 μg/m3 (69) 69.0
 
March 17, 2019, 3 p.m. N/A N/A N/A 18.0 ppb (17) N/A N/A 26.0 ppb (20) 0.3 ppb (3) N/A 11.7 μg/m3 (49) 49.0
 
March 17, 2019, 2 p.m. N/A N/A N/A 31.0 ppb (29) N/A N/A 13.0 ppb (10) 0.3 ppb (3) N/A 10.1 μg/m3 (42) 42.0
 
March 17, 2019, 1 p.m. N/A N/A N/A 42.0 ppb (39) N/A N/A 2.0 ppb (2) 0.32 ppb (4) N/A 14.1 μg/m3 (54) 54.0
 
March 17, 2019, noon N/A N/A N/A 40.0 ppb (37) N/A N/A 1.0 ppb (1) 0.42 ppb (5) N/A 18.0 μg/m3 (63) 63.0
 
March 17, 2019, 11 a.m. N/A N/A N/A 43.0 ppb (40) N/A N/A 1.0 ppb (1) 0.5 ppb (6) N/A 20.9 μg/m3 (69) 69.0
 
March 17, 2019, 10 a.m. N/A N/A N/A 46.0 ppb (43) N/A N/A 1.0 ppb (1) 0.6 ppb (7) N/A 20.7 μg/m3 (69) 69.0
 
March 17, 2019, 9 a.m. N/A N/A N/A 44.0 ppb (41) N/A N/A 1.0 ppb (1) 0.59 ppb (7) N/A 19.5 μg/m3 (66) 66.0
 
March 17, 2019, 8 a.m. N/A N/A N/A 47.0 ppb (44) N/A N/A 1.0 ppb (1) 0.57 ppb (6) N/A 19.9 μg/m3 (67) 67.0
 
March 17, 2019, 7 a.m. N/A N/A N/A 45.0 ppb (42) N/A N/A 1.0 ppb (1) 0.54 ppb (6) N/A 18.9 μg/m3 (65) 65.0
 
March 17, 2019, 6 a.m. N/A N/A N/A 42.0 ppb (39) N/A N/A 6.0 ppb (5) 0.47 ppb (5) N/A 16.6 μg/m3 (60) 60.0
 
March 17, 2019, 5 a.m. N/A N/A N/A 33.0 ppb (31) N/A N/A 15.0 ppb (12) 0.39 ppb (4) N/A 16.5 μg/m3 (60) 60.0
 
March 17, 2019, 3 a.m. N/A N/A N/A 33.0 ppb (31) N/A N/A 20.0 ppb (15) 0.41 ppb (5) N/A 13.7 μg/m3 (54) 54.0
 
March 17, 2019, 1 a.m. N/A N/A N/A 24.0 ppb (22) N/A N/A 31.0 ppb (24) 0.31 ppb (3) N/A 10.4 μg/m3 (43) 43.0
 
March 17, 2019, midnight N/A N/A N/A 19.0 ppb (18) N/A N/A 38.0 ppb (29) 0.25 ppb (3) N/A 8.9 μg/m3 (37) 37.0
 
March 16, 2019, 11 p.m. N/A N/A N/A 12.0 ppb (11) N/A N/A 49.0 ppb (38) 0.19 ppb (2) N/A 5.7 μg/m3 (24) 38.0
 
March 16, 2019, 10 p.m. N/A N/A N/A 9.0 ppb (8) N/A N/A 51.0 ppb (39) 0.19 ppb (2) N/A 4.3 μg/m3 (18) 39.0
 
March 16, 2019, 9 p.m. N/A N/A N/A 6.0 ppb (6) N/A N/A 51.0 ppb (39) 0.19 ppb (2) N/A 4.3 μg/m3 (18) 39.0
 
March 16, 2019, 8 p.m. N/A N/A N/A 6.0 ppb (6) N/A N/A 50.0 ppb (38) 0.21 ppb (2) N/A 4.8 μg/m3 (20) 38.0
 
March 16, 2019, 7 p.m. N/A N/A N/A 9.0 ppb (8) N/A N/A 46.0 ppb (35) 0.25 ppb (3) N/A 6.9 μg/m3 (29) 35.0
 
March 16, 2019, 6 p.m. N/A N/A N/A 18.0 ppb (17) N/A N/A 34.0 ppb (26) 0.32 ppb (4) N/A 12.3 μg/m3 (51) 51.0
 
March 16, 2019, 5 p.m. N/A N/A N/A 29.0 ppb (27) N/A N/A 22.0 ppb (17) 0.39 ppb (4) N/A 13.6 μg/m3 (53) 53.0
 
March 16, 2019, 4 p.m. N/A N/A N/A 33.0 ppb (31) N/A N/A 17.0 ppb (13) 0.41 ppb (5) N/A 12.6 μg/m3 (51) 51.0
 
March 16, 2019, 3 p.m. N/A N/A N/A 30.0 ppb (28) N/A N/A 16.0 ppb (12) 0.35 ppb (4) N/A 8.1 μg/m3 (34) 34.0
 
March 16, 2019, 2 p.m. N/A N/A N/A 43.0 ppb (40) N/A N/A 6.0 ppb (5) 0.36 ppb (4) N/A 9.8 μg/m3 (41) 41.0
 
March 16, 2019, noon N/A N/A N/A 42.0 ppb (39) N/A N/A 5.0 ppb (4) 0.27 ppb (3) N/A 9.1 μg/m3 (38) 39.0
 
March 16, 2019, 10 a.m. N/A N/A N/A 51.0 ppb (47) N/A N/A 1.0 ppb (1) 0.31 ppb (3) N/A 12.6 μg/m3 (51) 51.0
 
March 16, 2019, 9 a.m. N/A N/A N/A 48.0 ppb (44) N/A N/A 1.0 ppb (1) 0.57 ppb (6) N/A 15.0 μg/m3 (56) 56.0
 
March 16, 2019, 8 a.m. N/A N/A N/A 47.0 ppb (44) N/A N/A 1.0 ppb (1) 0.55 ppb (6) N/A 14.8 μg/m3 (56) 56.0
 
March 16, 2019, 7 a.m. N/A N/A N/A 50.0 ppb (46) N/A N/A 1.0 ppb (1) 0.5 ppb (6) N/A 14.4 μg/m3 (55) 55.0
 
March 16, 2019, 5 a.m. N/A N/A N/A 50.0 ppb (46) N/A N/A 1.0 ppb (1) 0.45 ppb (5) N/A 13.2 μg/m3 (53) 53.0
 
March 16, 2019, 4 a.m. N/A N/A N/A 50.0 ppb (46) N/A N/A 4.0 ppb (3) 0.4 ppb (4) N/A 13.5 μg/m3 (53) 53.0
 
March 16, 2019, 3 a.m. N/A N/A N/A 35.0 ppb (32) N/A N/A 15.0 ppb (12) 0.31 ppb (3) N/A 14.1 μg/m3 (54) 54.0
 
March 16, 2019, 2 a.m. N/A N/A N/A 28.0 ppb (26) N/A N/A 25.0 ppb (19) 0.27 ppb (3) N/A 21.1 μg/m3 (69) 69.0
 
March 16, 2019, 1 a.m. N/A N/A N/A 10.0 ppb (9) N/A N/A 46.0 ppb (35) 0.2 ppb (2) N/A 9.5 μg/m3 (40) 40.0
 
March 16, 2019, midnight N/A N/A N/A 4.0 ppb (4) N/A N/A 50.0 ppb (38) 0.17 ppb (2) N/A 5.4 μg/m3 (23) 38.0
 
March 15, 2019, 10 p.m. N/A N/A N/A 9.0 ppb (8) N/A N/A 48.0 ppb (37) 0.23 ppb (3) N/A 4.1 μg/m3 (17) 37.0
 
March 15, 2019, 9 p.m. N/A N/A N/A 5.0 ppb (5) N/A N/A 50.0 ppb (38) 0.18 ppb (2) N/A 3.7 μg/m3 (15) 38.0
 
March 15, 2019, 7 p.m. N/A N/A N/A 2.0 ppb (2) N/A N/A 51.0 ppb (39) 0.17 ppb (2) N/A 2.8 μg/m3 (12) 39.0
 
March 15, 2019, 6 p.m. N/A N/A N/A 4.0 ppb (4) N/A N/A 48.0 ppb (37) 0.18 ppb (2) N/A 3.2 μg/m3 (13) 37.0
 
March 15, 2019, 5 p.m. N/A N/A N/A 5.0 ppb (5) N/A N/A 47.0 ppb (36) 0.18 ppb (2) N/A 3.0 μg/m3 (12) 36.0
 
March 15, 2019, 4 p.m. N/A N/A N/A 7.0 ppb (6) N/A N/A 44.0 ppb (34) 0.2 ppb (2) N/A 3.0 μg/m3 (12) 34.0
 
March 15, 2019, 3 p.m. N/A N/A N/A 12.0 ppb (11) N/A N/A 38.0 ppb (29) 0.24 ppb (3) N/A 3.9 μg/m3 (16) 29.0
 
March 15, 2019, 2 p.m. N/A N/A N/A 23.0 ppb (21) N/A N/A 26.0 ppb (20) 0.26 ppb (3) N/A 4.0 μg/m3 (17) 21.0
 
March 15, 2019, 1 p.m. N/A N/A N/A 16.0 ppb (15) N/A N/A 31.0 ppb (24) 0.2 ppb (2) N/A 2.7 μg/m3 (11) 24.0
 
March 15, 2019, noon N/A N/A N/A 11.0 ppb (10) N/A N/A 36.0 ppb (28) 0.16 ppb (2) N/A 1.9 μg/m3 (8) 28.0
 
March 15, 2019, 11 a.m. N/A N/A N/A 15.0 ppb (14) N/A N/A 34.0 ppb (26) 0.16 ppb (2) N/A 2.1 μg/m3 (9) 26.0
 
March 15, 2019, 10 a.m. N/A N/A N/A 25.0 ppb (23) N/A N/A 25.0 ppb (19) 0.17 ppb (2) N/A 2.1 μg/m3 (9) 23.0
 
March 15, 2019, 9 a.m. N/A N/A N/A 20.0 ppb (19) N/A N/A 29.0 ppb (22) 0.16 ppb (2) N/A 1.9 μg/m3 (8) 22.0
 
March 15, 2019, 8 a.m. N/A N/A N/A 8.0 ppb (7) N/A N/A 40.0 ppb (31) 0.14 ppb (2) N/A 1.4 μg/m3 (6) 31.0
 
March 15, 2019, 7 a.m. N/A N/A N/A 12.0 ppb (11) N/A N/A 37.0 ppb (28) 0.15 ppb (2) N/A 1.5 μg/m3 (6) 28.0
 
March 15, 2019, 6 a.m. N/A N/A N/A 14.0 ppb (13) N/A N/A 35.0 ppb (27) 0.16 ppb (2) N/A 1.7 μg/m3 (7) 27.0
 
March 15, 2019, 5 a.m. N/A N/A N/A 22.0 ppb (20) N/A N/A 27.0 ppb (21) 0.22 ppb (2) N/A 3.8 μg/m3 (16) 21.0
 
March 15, 2019, 4 a.m. N/A N/A N/A 36.0 ppb (33) N/A N/A 14.0 ppb (11) 0.3 ppb (3) N/A 7.9 μg/m3 (33) 33.0
 
March 15, 2019, 3 a.m. N/A N/A N/A 24.0 ppb (22) N/A N/A 26.0 ppb (20) 0.24 ppb (3) N/A 4.7 μg/m3 (20) 22.0
 
March 15, 2019, 2 a.m. N/A N/A N/A 13.0 ppb (12) N/A N/A 37.0 ppb (28) 0.2 ppb (2) N/A 3.7 μg/m3 (15) 28.0
 
March 15, 2019, 1 a.m. N/A N/A N/A 13.0 ppb (12) N/A N/A 39.0 ppb (30) 0.2 ppb (2) N/A 3.8 μg/m3 (16) 30.0
 
March 15, 2019, midnight N/A N/A N/A 8.0 ppb (7) N/A N/A 43.0 ppb (33) 0.18 ppb (2) N/A 4.6 μg/m3 (19) 33.0
 
March 14, 2019, 11 p.m. N/A N/A N/A 7.0 ppb (6) N/A N/A 46.0 ppb (35) 0.17 ppb (2) N/A 3.9 μg/m3 (16) 35.0
 
March 14, 2019, 10 p.m. N/A N/A N/A 5.0 ppb (5) N/A N/A 47.0 ppb (36) 0.15 ppb (2) N/A 4.0 μg/m3 (17) 36.0
 
March 14, 2019, 9 p.m. N/A N/A N/A 5.0 ppb (5) N/A N/A 46.0 ppb (35) 0.13 ppb (1) N/A 3.5 μg/m3 (15) 35.0
 
March 14, 2019, 8 p.m. N/A N/A N/A 5.0 ppb (5) N/A N/A 45.0 ppb (35) 0.13 ppb (1) N/A 3.5 μg/m3 (15) 35.0
 
March 14, 2019, 7 p.m. N/A N/A N/A 7.0 ppb (6) N/A N/A 44.0 ppb (34) 0.15 ppb (2) N/A 4.6 μg/m3 (19) 34.0
 
March 14, 2019, 6 p.m. N/A N/A N/A 15.0 ppb (14) N/A N/A 35.0 ppb (27) 0.22 ppb (2) N/A 9.7 μg/m3 (40) 40.0
 
March 14, 2019, 5 p.m. N/A N/A N/A 11.0 ppb (10) N/A N/A 35.0 ppb (27) 0.17 ppb (2) N/A 6.4 μg/m3 (27) 27.0
 
March 14, 2019, 4 p.m. N/A N/A N/A 22.0 ppb (20) N/A N/A 26.0 ppb (20) 0.19 ppb (2) N/A 8.9 μg/m3 (37) 37.0
 
March 14, 2019, 3 p.m. N/A N/A N/A 15.0 ppb (14) N/A N/A 29.0 ppb (22) 0.18 ppb (2) N/A 5.8 μg/m3 (24) 24.0
 
March 14, 2019, 2 p.m. N/A N/A N/A 22.0 ppb (20) N/A N/A 22.0 ppb (17) 0.19 ppb (2) N/A 4.8 μg/m3 (20) 20.0
 
March 14, 2019, 1 p.m. N/A N/A N/A 23.0 ppb (21) N/A N/A 21.0 ppb (16) 0.18 ppb (2) N/A 4.7 μg/m3 (20) 21.0
 
March 14, 2019, noon N/A N/A N/A 39.0 ppb (36) N/A N/A 10.0 ppb (8) 0.17 ppb (2) N/A 4.8 μg/m3 (20) 36.0
 
March 14, 2019, 11 a.m. N/A N/A N/A 14.0 ppb (13) N/A N/A 29.0 ppb (22) 0.11 ppb (1) N/A 3.5 μg/m3 (15) 22.0
 
March 14, 2019, 10 a.m. N/A N/A N/A 14.0 ppb (13) N/A N/A 31.0 ppb (24) 0.11 ppb (1) N/A 3.3 μg/m3 (14) 24.0
 
March 14, 2019, 9 a.m. N/A N/A N/A 11.0 ppb (10) N/A N/A 32.0 ppb (25) 0.12 ppb (1) N/A 2.8 μg/m3 (12) 25.0
 
March 14, 2019, 8 a.m. N/A N/A N/A 13.0 ppb (12) N/A N/A 30.0 ppb (23) 0.14 ppb (2) N/A 2.8 μg/m3 (12) 23.0
 
March 14, 2019, 7 a.m. N/A N/A N/A 13.0 ppb (12) N/A N/A 31.0 ppb (24) 0.15 ppb (2) N/A 3.0 μg/m3 (12) 24.0
 
March 14, 2019, 6 a.m. N/A N/A N/A 20.0 ppb (19) N/A N/A 28.0 ppb (22) 0.19 ppb (2) N/A 5.1 μg/m3 (21) 22.0
 
March 14, 2019, 5 a.m. N/A N/A N/A 39.0 ppb (36) N/A N/A 10.0 ppb (8) 0.26 ppb (3) N/A 8.8 μg/m3 (37) 37.0
 
March 14, 2019, 4 a.m. N/A N/A N/A 32.0 ppb (30) N/A N/A 16.0 ppb (12) 0.28 ppb (3) N/A 8.6 μg/m3 (36) 36.0
 
March 14, 2019, 3 a.m. N/A N/A N/A 38.0 ppb (35) N/A N/A 15.0 ppb (12) 0.29 ppb (3) N/A 8.8 μg/m3 (37) 37.0
 
March 14, 2019, 2 a.m. N/A N/A N/A 25.0 ppb (23) N/A N/A 27.0 ppb (21) 0.26 ppb (3) N/A 8.0 μg/m3 (33) 33.0
 
March 14, 2019, 1 a.m. N/A N/A N/A 13.0 ppb (12) N/A N/A 40.0 ppb (31) 0.16 ppb (2) N/A 5.8 μg/m3 (24) 31.0
 
March 14, 2019, midnight N/A N/A N/A 5.0 ppb (5) N/A N/A 47.0 ppb (36) 0.14 ppb (2) N/A 5.6 μg/m3 (23) 36.0
 
March 13, 2019, 10 p.m. N/A N/A N/A 8.0 ppb (7) N/A N/A 47.0 ppb (36) 0.17 ppb (2) N/A 20.7 μg/m3 (69) 69.0
 
March 13, 2019, 9 p.m. N/A N/A N/A 7.0 ppb (6) N/A N/A 46.0 ppb (35) 0.16 ppb (2) N/A 8.0 μg/m3 (33) 35.0
 
March 13, 2019, 8 p.m. N/A N/A N/A 6.0 ppb (6) N/A N/A 43.0 ppb (33) 0.14 ppb (2) N/A 5.9 μg/m3 (25) 33.0
 
March 13, 2019, 7 p.m. N/A N/A N/A 5.0 ppb (5) N/A N/A 42.0 ppb (32) 0.15 ppb (2) N/A 4.7 μg/m3 (20) 32.0
 
March 13, 2019, 5 p.m. N/A N/A N/A 7.0 ppb (6) N/A N/A 38.0 ppb (29) N/A N/A 5.6 μg/m3 (23) 29.0
 
March 13, 2019, 4 p.m. N/A N/A N/A 11.0 ppb (10) N/A N/A 34.0 ppb (26) 0.19 ppb (2) N/A 5.0 μg/m3 (21) 26.0
 
March 13, 2019, 3 p.m. N/A N/A N/A 18.0 ppb (17) N/A N/A 27.0 ppb (21) 0.22 ppb (2) N/A 4.4 μg/m3 (18) 21.0
 
March 13, 2019, 2 p.m. N/A N/A N/A 23.0 ppb (21) N/A N/A 23.0 ppb (18) 0.25 ppb (3) N/A 3.4 μg/m3 (14) 21.0
 
March 13, 2019, 1 p.m. N/A N/A N/A 26.0 ppb (24) N/A N/A 19.0 ppb (15) 0.24 ppb (3) N/A 3.8 μg/m3 (16) 24.0
 
March 13, 2019, noon N/A N/A N/A 24.0 ppb (22) N/A N/A 21.0 ppb (16) 0.21 ppb (2) N/A 3.6 μg/m3 (15) 22.0
 
March 13, 2019, 11 a.m. N/A N/A N/A 9.0 ppb (8) N/A N/A 37.0 ppb (28) 0.17 ppb (2) N/A 3.1 μg/m3 (13) 28.0
 
March 13, 2019, 10 a.m. N/A N/A N/A 10.0 ppb (9) N/A N/A 38.0 ppb (29) 0.13 ppb (1) N/A 4.1 μg/m3 (17) 29.0
 
March 13, 2019, 9 a.m. N/A N/A N/A 8.0 ppb (7) N/A N/A 40.0 ppb (31) 0.12 ppb (1) N/A 4.4 μg/m3 (18) 31.0
 
March 13, 2019, 8 a.m. N/A N/A N/A 16.0 ppb (15) N/A N/A 33.0 ppb (25) 0.14 ppb (2) N/A 4.8 μg/m3 (20) 25.0
 
March 13, 2019, 7 a.m. N/A N/A N/A 40.0 ppb (37) N/A N/A 13.0 ppb (10) 0.18 ppb (2) N/A 4.7 μg/m3 (20) 37.0
 
March 13, 2019, 6 a.m. N/A N/A N/A 34.0 ppb (31) N/A N/A 19.0 ppb (15) 0.18 ppb (2) N/A 4.4 μg/m3 (18) 31.0
 
March 13, 2019, 5 a.m. N/A N/A N/A 16.0 ppb (15) N/A N/A 36.0 ppb (28) 0.18 ppb (2) N/A 7.1 μg/m3 (30) 30.0
 
March 13, 2019, 4 a.m. N/A N/A N/A 13.0 ppb (12) N/A N/A 42.0 ppb (32) 0.16 ppb (2) N/A 6.2 μg/m3 (26) 32.0
 
March 13, 2019, 3 a.m. N/A N/A N/A 10.0 ppb (9) N/A N/A 44.0 ppb (34) 0.13 ppb (1) N/A 4.4 μg/m3 (18) 34.0
 
March 13, 2019, 2 a.m. N/A N/A N/A 11.0 ppb (10) N/A N/A 44.0 ppb (34) 0.13 ppb (1) N/A 5.0 μg/m3 (21) 34.0
 
March 13, 2019, 1 a.m. N/A N/A N/A 9.0 ppb (8) N/A N/A 44.0 ppb (34) 0.14 ppb (2) N/A 3.9 μg/m3 (16) 34.0
 
March 13, 2019, midnight N/A N/A N/A 6.0 ppb (6) N/A N/A 48.0 ppb (37) 0.14 ppb (2) N/A 2.4 μg/m3 (10) 37.0
 
March 12, 2019, 11 p.m. N/A N/A N/A 6.0 ppb (6) N/A N/A 48.0 ppb (37) 0.15 ppb (2) N/A 2.3 μg/m3 (10) 37.0
 
March 12, 2019, 10 p.m. N/A N/A N/A 5.0 ppb (5) N/A N/A 47.0 ppb (36) 0.16 ppb (2) N/A 2.2 μg/m3 (9) 36.0
 
March 12, 2019, 9 p.m. N/A N/A N/A 8.0 ppb (7) N/A N/A 43.0 ppb (33) 0.18 ppb (2) N/A 2.5 μg/m3 (10) 33.0
 
March 12, 2019, 8 p.m. N/A N/A N/A 8.0 ppb (7) N/A N/A 41.0 ppb (32) 0.18 ppb (2) N/A 3.0 μg/m3 (12) 32.0
 
March 12, 2019, 7 p.m. N/A N/A N/A 8.0 ppb (7) N/A N/A 40.0 ppb (31) 0.19 ppb (2) N/A 2.3 μg/m3 (10) 31.0
 
March 12, 2019, 6 p.m. N/A N/A N/A 8.0 ppb (7) N/A N/A N/A 0.13 ppb (1) N/A 2.1 μg/m3 (9) 9.0