AQSQID: 000090222

Site Name: Calgary Northwest

Location: Calgary (Varsity Acres), CC

Reporting: True, Located: True

Current AQI: 42.0

Calgary (Varsity Acres) CC, CA: 51.0814, -114.1403

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
Jan. 17, 2020, 1 p.m. N/A N/A N/A 9.0 ppb (8) N/A N/A 22.0 ppb (17) 0.25 ppb (3) N/A 10.0 μg/m3 (42) 42.0
 
Jan. 17, 2020, noon N/A N/A N/A 8.0 ppb (7) N/A N/A 23.0 ppb (18) 0.23 ppb (3) N/A 7.0 μg/m3 (29) 29.0
 
Jan. 17, 2020, 11 a.m. N/A N/A N/A 9.0 ppb (8) N/A N/A 23.0 ppb (18) 0.23 ppb (3) N/A 6.2 μg/m3 (26) 26.0
 
Jan. 17, 2020, 10 a.m. N/A N/A N/A 9.0 ppb (8) N/A N/A N/A N/A N/A 5.1 μg/m3 (21) 21.0
 
Jan. 17, 2020, 9 a.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (19) 0.22 ppb (2) N/A 5.1 μg/m3 (21) 21.0
 
Jan. 17, 2020, 8 a.m. N/A N/A N/A 9.0 ppb (8) N/A N/A 25.0 ppb (19) 0.22 ppb (2) N/A 5.0 μg/m3 (21) 21.0
 
Jan. 17, 2020, 7 a.m. N/A N/A N/A 8.0 ppb (7) N/A N/A 25.0 ppb (19) 0.21 ppb (2) N/A 5.0 μg/m3 (21) 21.0
 
Jan. 17, 2020, 6 a.m. N/A N/A N/A 9.0 ppb (8) N/A N/A 24.0 ppb (18) 0.22 ppb (2) N/A 4.9 μg/m3 (20) 20.0
 
Jan. 17, 2020, 5 a.m. N/A N/A N/A 9.0 ppb (8) N/A N/A 24.0 ppb (18) 0.22 ppb (2) N/A 4.7 μg/m3 (20) 20.0
 
Jan. 17, 2020, 4 a.m. N/A N/A N/A 11.0 ppb (10) N/A N/A 23.0 ppb (18) 0.22 ppb (2) N/A 5.2 μg/m3 (22) 22.0
 
Jan. 17, 2020, 3 a.m. N/A N/A N/A 14.0 ppb (13) N/A N/A 20.0 ppb (15) 0.25 ppb (3) N/A 6.7 μg/m3 (28) 28.0
 
Jan. 17, 2020, 2 a.m. N/A N/A N/A 16.0 ppb (15) N/A N/A 18.0 ppb (14) 0.27 ppb (3) N/A 7.2 μg/m3 (30) 30.0
 
Jan. 17, 2020, 1 a.m. N/A N/A N/A 20.0 ppb (19) N/A N/A 16.0 ppb (12) 0.28 ppb (3) N/A 7.8 μg/m3 (32) 32.0
 
Jan. 17, 2020, midnight N/A N/A N/A 28.0 ppb (26) N/A N/A 10.0 ppb (8) 0.34 ppb (4) N/A 9.3 μg/m3 (39) 39.0
 
Jan. 16, 2020, 11 p.m. N/A N/A N/A 27.0 ppb (25) N/A N/A 12.0 ppb (9) 0.39 ppb (4) N/A 11.1 μg/m3 (46) 46.0
 
Jan. 16, 2020, 10 p.m. N/A N/A N/A 25.0 ppb (23) N/A N/A 15.0 ppb (12) 0.39 ppb (4) N/A 12.5 μg/m3 (51) 51.0
 
Jan. 16, 2020, 9 p.m. N/A N/A N/A 22.0 ppb (20) N/A N/A 18.0 ppb (14) 0.36 ppb (4) N/A 14.1 μg/m3 (54) 54.0
 
Jan. 16, 2020, 8 p.m. N/A N/A N/A 19.0 ppb (18) N/A N/A 21.0 ppb (16) 0.33 ppb (4) N/A 12.7 μg/m3 (51) 51.0
 
Jan. 16, 2020, 7 p.m. N/A N/A N/A 18.0 ppb (17) N/A N/A 21.0 ppb (16) 0.32 ppb (4) N/A 10.9 μg/m3 (45) 45.0
 
Jan. 16, 2020, 6 p.m. N/A N/A N/A 17.0 ppb (16) N/A N/A 21.0 ppb (16) 0.3 ppb (3) N/A 8.2 μg/m3 (34) 34.0
 
Jan. 16, 2020, 5 p.m. N/A N/A N/A 17.0 ppb (16) N/A N/A 20.0 ppb (15) 0.29 ppb (3) N/A 4.9 μg/m3 (20) 20.0
 
Jan. 16, 2020, 4 p.m. N/A N/A N/A 18.0 ppb (17) N/A N/A 18.0 ppb (14) 0.29 ppb (3) N/A 5.3 μg/m3 (22) 22.0
 
Jan. 16, 2020, 3 p.m. N/A N/A N/A 20.0 ppb (19) N/A N/A 16.0 ppb (12) 0.28 ppb (3) N/A 7.8 μg/m3 (32) 32.0
 
Jan. 16, 2020, 2 p.m. N/A N/A N/A 17.0 ppb (16) N/A N/A 18.0 ppb (14) 0.25 ppb (3) N/A 9.6 μg/m3 (40) 40.0
 
Jan. 16, 2020, 1 p.m. N/A N/A N/A 17.0 ppb (16) N/A N/A 18.0 ppb (14) 0.24 ppb (3) N/A 9.2 μg/m3 (38) 38.0
 
Jan. 16, 2020, noon N/A N/A N/A 16.0 ppb (15) N/A N/A 18.0 ppb (14) 0.23 ppb (3) N/A 9.3 μg/m3 (39) 39.0
 
Jan. 16, 2020, 11 a.m. N/A N/A N/A 13.0 ppb (12) N/A N/A 20.0 ppb (15) 0.22 ppb (2) N/A 7.3 μg/m3 (30) 30.0
 
Jan. 16, 2020, 10 a.m. N/A N/A N/A 12.0 ppb (11) N/A N/A N/A N/A N/A 9.0 μg/m3 (38) 38.0
 
Jan. 16, 2020, 9 a.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (16) 0.22 ppb (2) N/A 9.7 μg/m3 (40) 40.0
 
Jan. 16, 2020, 8 a.m. N/A N/A N/A 12.0 ppb (11) N/A N/A 22.0 ppb (17) 0.22 ppb (2) N/A 9.9 μg/m3 (41) 41.0
 
Jan. 16, 2020, 7 a.m. N/A N/A N/A 15.0 ppb (14) N/A N/A 20.0 ppb (15) 0.24 ppb (3) N/A 10.4 μg/m3 (43) 43.0
 
Jan. 16, 2020, 6 a.m. N/A N/A N/A 12.0 ppb (11) N/A N/A 24.0 ppb (18) 0.23 ppb (3) N/A 12.6 μg/m3 (51) 51.0
 
Jan. 16, 2020, 5 a.m. N/A N/A N/A 16.0 ppb (15) N/A N/A 20.0 ppb (15) 0.25 ppb (3) N/A 14.1 μg/m3 (54) 54.0
 
Jan. 16, 2020, 4 a.m. N/A N/A N/A 15.0 ppb (14) N/A N/A 21.0 ppb (16) 0.26 ppb (3) N/A 11.0 μg/m3 (46) 46.0
 
Jan. 16, 2020, 3 a.m. N/A N/A N/A 17.0 ppb (16) N/A N/A 20.0 ppb (15) 0.28 ppb (3) N/A 10.6 μg/m3 (44) 44.0
 
Jan. 16, 2020, 2 a.m. N/A N/A N/A 25.0 ppb (23) N/A N/A 13.0 ppb (10) 0.34 ppb (4) N/A 12.3 μg/m3 (51) 51.0
 
Jan. 16, 2020, 1 a.m. N/A N/A N/A 24.0 ppb (22) N/A N/A 14.0 ppb (11) 0.36 ppb (4) N/A 13.8 μg/m3 (54) 54.0
 
Jan. 16, 2020, midnight N/A N/A N/A 26.0 ppb (24) N/A N/A 12.0 ppb (9) 0.38 ppb (4) N/A 14.9 μg/m3 (56) 56.0
 
Jan. 15, 2020, 11 p.m. N/A N/A N/A 22.0 ppb (20) N/A N/A 16.0 ppb (12) 0.36 ppb (4) N/A 26.9 μg/m3 (82) 82.0
 
Jan. 15, 2020, 10 p.m. N/A N/A N/A 21.0 ppb (19) N/A N/A 19.0 ppb (15) 0.35 ppb (4) N/A 25.9 μg/m3 (80) 80.0
 
Jan. 15, 2020, 9 p.m. N/A N/A N/A 16.0 ppb (15) N/A N/A 24.0 ppb (18) 0.33 ppb (4) N/A 17.7 μg/m3 (62) 62.0
 
Jan. 15, 2020, 8 p.m. N/A N/A N/A 14.0 ppb (13) N/A N/A 24.0 ppb (18) 0.32 ppb (4) N/A 15.1 μg/m3 (57) 57.0
 
Jan. 15, 2020, 7 p.m. N/A N/A N/A 23.0 ppb (21) N/A N/A 21.0 ppb (16) 0.4 ppb (4) N/A 22.0 μg/m3 (71) 71.0
 
Jan. 15, 2020, 6 p.m. N/A N/A N/A 30.0 ppb (28) N/A N/A 17.0 ppb (13) 0.54 ppb (6) N/A 25.4 μg/m3 (79) 79.0
 
Jan. 15, 2020, 5 p.m. N/A N/A N/A 24.0 ppb (22) N/A N/A 16.0 ppb (12) 0.45 ppb (5) N/A 17.0 μg/m3 (61) 61.0
 
Jan. 15, 2020, 4 p.m. N/A N/A N/A 26.0 ppb (24) N/A N/A 11.0 ppb (8) 0.41 ppb (5) N/A 13.9 μg/m3 (54) 54.0
 
Jan. 15, 2020, 3 p.m. N/A N/A N/A 32.0 ppb (30) N/A N/A 4.0 ppb (3) 0.41 ppb (5) N/A 14.4 μg/m3 (55) 55.0
 
Jan. 15, 2020, 2 p.m. N/A N/A N/A 34.0 ppb (31) N/A N/A 2.0 ppb (2) 0.43 ppb (5) N/A 13.0 μg/m3 (52) 52.0
 
Jan. 15, 2020, 1 p.m. N/A N/A N/A 30.0 ppb (28) N/A N/A 4.0 ppb (3) 0.33 ppb (4) N/A 10.4 μg/m3 (43) 43.0
 
Jan. 15, 2020, noon N/A N/A N/A 30.0 ppb (28) N/A N/A 4.0 ppb (3) 0.26 ppb (3) N/A 10.8 μg/m3 (45) 45.0
 
Jan. 15, 2020, 11 a.m. N/A N/A N/A 27.0 ppb (25) N/A N/A 10.0 ppb (8) 0.25 ppb (3) N/A 9.6 μg/m3 (40) 40.0
 
Jan. 15, 2020, 10 a.m. N/A N/A N/A 23.0 ppb (21) N/A N/A N/A N/A N/A 9.5 μg/m3 (40) 40.0
 
Jan. 15, 2020, 9 a.m. N/A N/A N/A N/A N/A N/A 7.0 ppb (5) 0.24 ppb (3) N/A 10.5 μg/m3 (44) 44.0
 
Jan. 15, 2020, 8 a.m. N/A N/A N/A 32.0 ppb (30) N/A N/A 7.0 ppb (5) 0.26 ppb (3) N/A 11.3 μg/m3 (47) 47.0
 
Jan. 15, 2020, 7 a.m. N/A N/A N/A 19.0 ppb (18) N/A N/A 20.0 ppb (15) 0.22 ppb (2) N/A 7.8 μg/m3 (32) 32.0
 
Jan. 15, 2020, 6 a.m. N/A N/A N/A 26.0 ppb (24) N/A N/A 14.0 ppb (11) 0.27 ppb (3) N/A 10.2 μg/m3 (42) 42.0
 
Jan. 15, 2020, 5 a.m. N/A N/A N/A 18.0 ppb (17) N/A N/A 21.0 ppb (16) 0.24 ppb (3) N/A 7.6 μg/m3 (32) 32.0
 
Jan. 15, 2020, 4 a.m. N/A N/A N/A 25.0 ppb (23) N/A N/A 16.0 ppb (12) 0.31 ppb (3) N/A 11.8 μg/m3 (49) 49.0
 
Jan. 15, 2020, 3 a.m. N/A N/A N/A 31.0 ppb (29) N/A N/A 11.0 ppb (8) 0.35 ppb (4) N/A 13.4 μg/m3 (53) 53.0
 
Jan. 15, 2020, 2 a.m. N/A N/A N/A 25.0 ppb (23) N/A N/A 16.0 ppb (12) 0.33 ppb (4) N/A 12.5 μg/m3 (51) 51.0
 
Jan. 15, 2020, 1 a.m. N/A N/A N/A 22.0 ppb (20) N/A N/A 19.0 ppb (15) 0.32 ppb (4) N/A 13.0 μg/m3 (52) 52.0
 
Jan. 15, 2020, midnight N/A N/A N/A 16.0 ppb (15) N/A N/A 24.0 ppb (18) 0.3 ppb (3) N/A 16.9 μg/m3 (60) 60.0
 
Jan. 14, 2020, 11 p.m. N/A N/A N/A 12.0 ppb (11) N/A N/A 28.0 ppb (22) 0.27 ppb (3) N/A 15.5 μg/m3 (57) 57.0
 
Jan. 14, 2020, 10 p.m. N/A N/A N/A 11.0 ppb (10) N/A N/A 29.0 ppb (22) 0.25 ppb (3) N/A 11.9 μg/m3 (50) 50.0
 
Jan. 14, 2020, 9 p.m. N/A N/A N/A 12.0 ppb (11) N/A N/A 29.0 ppb (22) 0.25 ppb (3) N/A 12.6 μg/m3 (51) 51.0
 
Jan. 14, 2020, 8 p.m. N/A N/A N/A 6.0 ppb (6) N/A N/A 33.0 ppb (25) 0.21 ppb (2) N/A 11.8 μg/m3 (49) 49.0
 
Jan. 14, 2020, 7 p.m. N/A N/A N/A 4.0 ppb (4) N/A N/A 34.0 ppb (26) 0.2 ppb (2) N/A 11.3 μg/m3 (47) 47.0
 
Jan. 14, 2020, 6 p.m. N/A N/A N/A 5.0 ppb (5) N/A N/A 33.0 ppb (25) 0.21 ppb (2) N/A 10.7 μg/m3 (45) 45.0
 
Jan. 14, 2020, 5 p.m. N/A N/A N/A 6.0 ppb (6) N/A N/A 32.0 ppb (25) 0.22 ppb (2) N/A 10.7 μg/m3 (45) 45.0
 
Jan. 14, 2020, 3 p.m. N/A N/A N/A 33.0 ppb (31) N/A N/A 4.0 ppb (3) 0.43 ppb (5) N/A 8.2 μg/m3 (34) 34.0
 
Jan. 14, 2020, 2 p.m. N/A N/A N/A 33.0 ppb (31) N/A N/A 3.0 ppb (2) 0.38 ppb (4) N/A 7.3 μg/m3 (30) 31.0
 
Jan. 14, 2020, 1 p.m. N/A N/A N/A 31.0 ppb (29) N/A N/A 4.0 ppb (3) 0.32 ppb (4) N/A 6.4 μg/m3 (27) 29.0
 
Jan. 14, 2020, noon N/A N/A N/A 30.0 ppb (28) N/A N/A 4.0 ppb (3) 0.28 ppb (3) N/A 5.1 μg/m3 (21) 28.0
 
Jan. 14, 2020, 11 a.m. N/A N/A N/A 32.0 ppb (30) N/A N/A 3.0 ppb (2) 0.27 ppb (3) N/A 5.7 μg/m3 (24) 30.0
 
Jan. 14, 2020, 10 a.m. N/A N/A N/A 30.0 ppb (28) N/A N/A N/A N/A N/A 6.8 μg/m3 (28) 28.0
 
Jan. 14, 2020, 9 a.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (2) 0.29 ppb (3) N/A 8.5 μg/m3 (35) 35.0
 
Jan. 14, 2020, 8 a.m. N/A N/A N/A 33.0 ppb (31) N/A N/A 3.0 ppb (2) 0.29 ppb (3) N/A 9.6 μg/m3 (40) 40.0
 
Jan. 14, 2020, 7 a.m. N/A N/A N/A 39.0 ppb (36) N/A N/A 1.0 ppb (1) 0.38 ppb (4) N/A 8.5 μg/m3 (35) 36.0
 
Jan. 14, 2020, 6 a.m. N/A N/A N/A 43.0 ppb (40) N/A N/A 1.0 ppb (1) 0.4 ppb (4) N/A 7.8 μg/m3 (32) 40.0
 
Jan. 14, 2020, 5 a.m. N/A N/A N/A 40.0 ppb (37) N/A N/A 3.0 ppb (2) 0.4 ppb (4) N/A 7.4 μg/m3 (31) 37.0
 
Jan. 14, 2020, 4 a.m. N/A N/A N/A 40.0 ppb (37) N/A N/A 3.0 ppb (2) 0.43 ppb (5) N/A 10.9 μg/m3 (45) 45.0
 
Jan. 14, 2020, 3 a.m. N/A N/A N/A 30.0 ppb (28) N/A N/A 10.0 ppb (8) 0.32 ppb (4) N/A 8.7 μg/m3 (36) 36.0
 
Jan. 14, 2020, 2 a.m. N/A N/A N/A 18.0 ppb (17) N/A N/A 20.0 ppb (15) 0.26 ppb (3) N/A 8.7 μg/m3 (36) 36.0
 
Jan. 14, 2020, 1 a.m. N/A N/A N/A 16.0 ppb (15) N/A N/A 23.0 ppb (18) 0.29 ppb (3) N/A 11.5 μg/m3 (48) 48.0
 
Jan. 14, 2020, midnight N/A N/A N/A 11.0 ppb (10) N/A N/A 28.0 ppb (22) 0.27 ppb (3) N/A 12.7 μg/m3 (51) 51.0
 
Jan. 13, 2020, 11 p.m. N/A N/A N/A 6.0 ppb (6) N/A N/A 33.0 ppb (25) 0.24 ppb (3) N/A 12.4 μg/m3 (51) 51.0
 
Jan. 13, 2020, 10 p.m. N/A N/A N/A 4.0 ppb (4) N/A N/A 34.0 ppb (26) 0.2 ppb (2) N/A 10.2 μg/m3 (42) 42.0
 
Jan. 13, 2020, 9 p.m. N/A N/A N/A 3.0 ppb (3) N/A N/A 35.0 ppb (27) 0.18 ppb (2) N/A 8.2 μg/m3 (34) 34.0
 
Jan. 13, 2020, 8 p.m. N/A N/A N/A 3.0 ppb (3) N/A N/A 36.0 ppb (28) 0.18 ppb (2) N/A 9.3 μg/m3 (39) 39.0
 
Jan. 13, 2020, 7 p.m. N/A N/A N/A 4.0 ppb (4) N/A N/A 34.0 ppb (26) 0.19 ppb (2) N/A 9.9 μg/m3 (41) 41.0
 
Jan. 13, 2020, 6 p.m. N/A N/A N/A 5.0 ppb (5) N/A N/A 33.0 ppb (25) 0.19 ppb (2) N/A 6.8 μg/m3 (28) 28.0
 
Jan. 13, 2020, 5 p.m. N/A N/A N/A 4.0 ppb (4) N/A N/A 33.0 ppb (25) 0.18 ppb (2) N/A 3.8 μg/m3 (16) 25.0
 
Jan. 13, 2020, 4 p.m. N/A N/A N/A 6.0 ppb (6) N/A N/A 32.0 ppb (25) 0.19 ppb (2) N/A 3.9 μg/m3 (16) 25.0
 
Jan. 13, 2020, 3 p.m. N/A N/A N/A 8.0 ppb (7) N/A N/A 29.0 ppb (22) 0.21 ppb (2) N/A 3.0 μg/m3 (12) 22.0
 
Jan. 13, 2020, 2 p.m. N/A N/A N/A 8.0 ppb (7) N/A N/A 30.0 ppb (23) 0.19 ppb (2) N/A 1.5 μg/m3 (6) 23.0
 
Jan. 13, 2020, 1 p.m. N/A N/A N/A 7.0 ppb (6) N/A N/A 31.0 ppb (24) 0.17 ppb (2) N/A 1.1 μg/m3 (5) 24.0
 
Jan. 13, 2020, noon N/A N/A N/A 4.0 ppb (4) N/A N/A 33.0 ppb (25) 0.16 ppb (2) N/A 0.7 μg/m3 (3) 25.0
 
Jan. 13, 2020, 11 a.m. N/A N/A N/A 4.0 ppb (4) N/A N/A 35.0 ppb (27) 0.16 ppb (2) N/A 0.6 μg/m3 (2) 27.0
 
Jan. 13, 2020, 10 a.m. N/A N/A N/A 3.0 ppb (3) N/A N/A N/A N/A N/A 0.5 μg/m3 (2) 3.0
 
Jan. 13, 2020, 9 a.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) 0.15 ppb (2) N/A 0.4 μg/m3 (2) 27.0
 
Jan. 13, 2020, 8 a.m. N/A N/A N/A 3.0 ppb (3) N/A N/A 34.0 ppb (26) 0.14 ppb (2) N/A 0.4 μg/m3 (2) 26.0
 
Jan. 13, 2020, 7 a.m. N/A N/A N/A 3.0 ppb (3) N/A N/A 34.0 ppb (26) 0.15 ppb (2) N/A 0.4 μg/m3 (2) 26.0
 
Jan. 13, 2020, 5 a.m. N/A N/A N/A 4.0 ppb (4) N/A N/A 33.0 ppb (25) 0.15 ppb (2) N/A 1.0 μg/m3 (4) 25.0
 
Jan. 13, 2020, 4 a.m. N/A N/A N/A 4.0 ppb (4) N/A N/A 34.0 ppb (26) 0.15 ppb (2) N/A 1.4 μg/m3 (6) 26.0
 
Jan. 13, 2020, 3 a.m. N/A N/A N/A 4.0 ppb (4) N/A N/A 33.0 ppb (25) 0.15 ppb (2) N/A 1.4 μg/m3 (6) 25.0
 
Jan. 13, 2020, 2 a.m. N/A N/A N/A 5.0 ppb (5) N/A N/A 33.0 ppb (25) 0.15 ppb (2) N/A 1.5 μg/m3 (6) 25.0
 
Jan. 13, 2020, 1 a.m. N/A N/A N/A 4.0 ppb (4) N/A N/A 33.0 ppb (25) 0.16 ppb (2) N/A 1.9 μg/m3 (8) 25.0
 
Jan. 13, 2020, midnight N/A N/A N/A 5.0 ppb (5) N/A N/A 33.0 ppb (25) 0.16 ppb (2) N/A 2.1 μg/m3 (9) 25.0
 
Jan. 12, 2020, 11 p.m. N/A N/A N/A 5.0 ppb (5) N/A N/A 32.0 ppb (25) 0.16 ppb (2) N/A 2.6 μg/m3 (11) 25.0
 
Jan. 12, 2020, 10 p.m. N/A N/A N/A 4.0 ppb (4) N/A N/A 32.0 ppb (25) 0.17 ppb (2) N/A 3.3 μg/m3 (14) 25.0
 
Jan. 12, 2020, 9 p.m. N/A N/A N/A 4.0 ppb (4) N/A N/A 32.0 ppb (25) 0.16 ppb (2) N/A 2.2 μg/m3 (9) 25.0
 
Jan. 12, 2020, 8 p.m. N/A N/A N/A 4.0 ppb (4) N/A N/A 31.0 ppb (24) 0.16 ppb (2) N/A 2.8 μg/m3 (12) 24.0
 
Jan. 12, 2020, 7 p.m. N/A N/A N/A 4.0 ppb (4) N/A N/A 30.0 ppb (23) 0.17 ppb (2) N/A 3.1 μg/m3 (13) 23.0
 
Jan. 12, 2020, 6 p.m. N/A N/A N/A 4.0 ppb (4) N/A N/A 28.0 ppb (22) 0.18 ppb (2) N/A 3.8 μg/m3 (16) 22.0
 
Jan. 12, 2020, 5 p.m. N/A N/A N/A 5.0 ppb (5) N/A N/A 25.0 ppb (19) 0.2 ppb (2) N/A 4.4 μg/m3 (18) 19.0
 
Jan. 12, 2020, 4 p.m. N/A N/A N/A 7.0 ppb (6) N/A N/A 20.0 ppb (15) 0.23 ppb (3) N/A 6.0 μg/m3 (25) 25.0
 
Jan. 12, 2020, 3 p.m. N/A N/A N/A 8.0 ppb (7) N/A N/A 18.0 ppb (14) 0.22 ppb (2) N/A 6.2 μg/m3 (26) 26.0
 
Jan. 12, 2020, 2 p.m. N/A N/A N/A 8.0 ppb (7) N/A N/A 18.0 ppb (14) 0.2 ppb (2) N/A 6.2 μg/m3 (26) 26.0
 
Jan. 12, 2020, 1 p.m. N/A N/A N/A 7.0 ppb (6) N/A N/A 19.0 ppb (15) 0.18 ppb (2) N/A 6.2 μg/m3 (26) 26.0
 
Jan. 12, 2020, noon N/A N/A N/A 6.0 ppb (6) N/A N/A 20.0 ppb (15) 0.17 ppb (2) N/A 6.2 μg/m3 (26) 26.0
 
Jan. 12, 2020, 11 a.m. N/A N/A N/A 5.0 ppb (5) N/A N/A 21.0 ppb (16) 0.17 ppb (2) N/A 6.8 μg/m3 (28) 28.0
 
Jan. 12, 2020, 10 a.m. N/A N/A N/A 6.0 ppb (6) N/A N/A N/A N/A N/A 6.9 μg/m3 (29) 29.0
 
Jan. 12, 2020, 9 a.m. N/A N/A N/A N/A N/A N/A 19.0 ppb (15) 0.17 ppb (2) N/A 3.4 μg/m3 (14) 15.0
 
Jan. 12, 2020, 8 a.m. N/A N/A N/A 6.0 ppb (6) N/A N/A 21.0 ppb (16) 0.16 ppb (2) N/A 2.4 μg/m3 (10) 16.0
 
Jan. 12, 2020, 7 a.m. N/A N/A N/A 6.0 ppb (6) N/A N/A 21.0 ppb (16) 0.17 ppb (2) N/A 3.2 μg/m3 (13) 16.0
 
Jan. 12, 2020, 5 a.m. N/A N/A N/A 11.0 ppb (10) N/A N/A 17.0 ppb (13) 0.22 ppb (2) N/A 11.1 μg/m3 (46) 46.0
 
Jan. 12, 2020, 4 a.m. N/A N/A N/A 12.0 ppb (11) N/A N/A 17.0 ppb (13) 0.23 ppb (3) N/A 9.6 μg/m3 (40) 40.0
 
Jan. 12, 2020, 3 a.m. N/A N/A N/A 11.0 ppb (10) N/A N/A 19.0 ppb (15) 0.22 ppb (2) N/A 10.1 μg/m3 (42) 42.0
 
Jan. 12, 2020, 1 a.m. N/A N/A N/A 20.0 ppb (19) N/A N/A 10.0 ppb (8) 0.29 ppb (3) N/A 14.5 μg/m3 (55) 55.0
 
Jan. 12, 2020, midnight N/A N/A N/A 16.0 ppb (15) N/A N/A 14.0 ppb (11) 0.25 ppb (3) N/A 11.4 μg/m3 (48) 48.0
 
Jan. 11, 2020, 11 p.m. N/A N/A N/A 13.0 ppb (12) N/A N/A 17.0 ppb (13) 0.25 ppb (3) N/A 10.7 μg/m3 (45) 45.0
 
Jan. 11, 2020, 10 p.m. N/A N/A N/A 11.0 ppb (10) N/A N/A 19.0 ppb (15) 0.24 ppb (3) N/A 11.7 μg/m3 (49) 49.0
 
Jan. 11, 2020, 9 p.m. N/A N/A N/A 8.0 ppb (7) N/A N/A 22.0 ppb (17) 0.23 ppb (3) N/A 12.5 μg/m3 (51) 51.0
 
Jan. 11, 2020, 8 p.m. N/A N/A N/A 8.0 ppb (7) N/A N/A 21.0 ppb (16) 0.26 ppb (3) N/A 15.2 μg/m3 (57) 57.0
 
Jan. 11, 2020, 7 p.m. N/A N/A N/A 10.0 ppb (9) N/A N/A 19.0 ppb (15) 0.29 ppb (3) N/A 18.6 μg/m3 (64) 64.0
 
Jan. 11, 2020, 6 p.m. N/A N/A N/A 11.0 ppb (10) N/A N/A 17.0 ppb (13) 0.34 ppb (4) N/A 20.2 μg/m3 (67) 67.0
 
Jan. 11, 2020, 5 p.m. N/A N/A N/A 12.0 ppb (11) N/A N/A 16.0 ppb (12) 0.35 ppb (4) N/A 16.9 μg/m3 (60) 60.0
 
Jan. 11, 2020, 3 p.m. N/A N/A N/A 18.0 ppb (17) N/A N/A 10.0 ppb (8) 0.31 ppb (3) N/A 11.4 μg/m3 (48) 48.0
 
Jan. 11, 2020, 2 p.m. N/A N/A N/A 19.0 ppb (18) N/A N/A 8.0 ppb (6) 0.27 ppb (3) N/A 8.0 μg/m3 (33) 33.0
 
Jan. 11, 2020, 1 p.m. N/A N/A N/A 18.0 ppb (17) N/A N/A 10.0 ppb (8) 0.25 ppb (3) N/A 8.0 μg/m3 (33) 33.0
 
Jan. 11, 2020, noon N/A N/A N/A 18.0 ppb (17) N/A N/A 11.0 ppb (8) 0.22 ppb (2) N/A 6.9 μg/m3 (29) 29.0
 
Jan. 11, 2020, 11 a.m. N/A N/A N/A 21.0 ppb (19) N/A N/A 9.0 ppb (7) 0.24 ppb (3) N/A 11.7 μg/m3 (49) 49.0
 
Jan. 11, 2020, 10 a.m. N/A N/A N/A 19.0 ppb (18) N/A N/A N/A N/A N/A 14.0 μg/m3 (54) 54.0
 
Jan. 11, 2020, 9 a.m. N/A N/A N/A N/A N/A N/A 14.0 ppb (11) 0.22 ppb (2) N/A 17.7 μg/m3 (62) 62.0
 
Jan. 11, 2020, 8 a.m. N/A N/A N/A 16.0 ppb (15) N/A N/A 15.0 ppb (12) 0.2 ppb (2) N/A 21.9 μg/m3 (71) 71.0
 
Jan. 11, 2020, 7 a.m. N/A N/A N/A 23.0 ppb (21) N/A N/A 9.0 ppb (7) 0.25 ppb (3) N/A 24.0 μg/m3 (76) 76.0
 
Jan. 11, 2020, 6 a.m. N/A N/A N/A 33.0 ppb (31) N/A N/A 8.0 ppb (6) 0.48 ppb (5) N/A 16.6 μg/m3 (60) 60.0
 
Jan. 11, 2020, 5 a.m. N/A N/A N/A 12.0 ppb (11) N/A N/A 27.0 ppb (21) 0.22 ppb (2) N/A 6.0 μg/m3 (25) 25.0
 
Jan. 11, 2020, 4 a.m. N/A N/A N/A 15.0 ppb (14) N/A N/A 24.0 ppb (18) 0.23 ppb (3) N/A 5.8 μg/m3 (24) 24.0
 
Jan. 11, 2020, 3 a.m. N/A N/A N/A 26.0 ppb (24) N/A N/A 14.0 ppb (11) 0.31 ppb (3) N/A 8.2 μg/m3 (34) 34.0
 
Jan. 11, 2020, 2 a.m. N/A N/A N/A 36.0 ppb (33) N/A N/A 5.0 ppb (4) 0.41 ppb (5) N/A 11.1 μg/m3 (46) 46.0
 
Jan. 11, 2020, 1 a.m. N/A N/A N/A 34.0 ppb (31) N/A N/A 7.0 ppb (5) 0.35 ppb (4) N/A 9.7 μg/m3 (40) 40.0
 
Jan. 11, 2020, midnight N/A N/A N/A 37.0 ppb (34) N/A N/A 6.0 ppb (5) 0.39 ppb (4) N/A 15.4 μg/m3 (57) 57.0
 
Jan. 10, 2020, 11 p.m. N/A N/A N/A 38.0 ppb (35) N/A N/A 5.0 ppb (4) 0.47 ppb (5) N/A 11.8 μg/m3 (49) 49.0
 
Jan. 10, 2020, 10 p.m. N/A N/A N/A 28.0 ppb (26) N/A N/A 14.0 ppb (11) 0.41 ppb (5) N/A 10.6 μg/m3 (44) 44.0
 
Jan. 10, 2020, 9 p.m. N/A N/A N/A 28.0 ppb (26) N/A N/A 14.0 ppb (11) 0.35 ppb (4) N/A 13.4 μg/m3 (53) 53.0
 
Jan. 10, 2020, 8 p.m. N/A N/A N/A 36.0 ppb (33) N/A N/A 9.0 ppb (7) 0.56 ppb (6) N/A 25.8 μg/m3 (79) 79.0
 
Jan. 10, 2020, 7 p.m. N/A N/A N/A 33.0 ppb (31) N/A N/A 10.0 ppb (8) 0.54 ppb (6) N/A 21.5 μg/m3 (70) 70.0
 
Jan. 10, 2020, 6 p.m. N/A N/A N/A 22.0 ppb (20) N/A N/A 16.0 ppb (12) 0.33 ppb (4) N/A 12.2 μg/m3 (50) 50.0
 
Jan. 10, 2020, 5 p.m. N/A N/A N/A 23.0 ppb (21) N/A N/A 12.0 ppb (9) 0.33 ppb (4) N/A 12.4 μg/m3 (51) 51.0
 
Jan. 10, 2020, 4 p.m. N/A N/A N/A 28.0 ppb (26) N/A N/A 6.0 ppb (5) 0.39 ppb (4) N/A 8.3 μg/m3 (35) 35.0
 
Jan. 10, 2020, 3 p.m. N/A N/A N/A 29.0 ppb (27) N/A N/A 2.0 ppb (2) 0.33 ppb (4) N/A 4.9 μg/m3 (20) 27.0
 
Jan. 10, 2020, 2 p.m. N/A N/A N/A 27.0 ppb (25) N/A N/A 2.0 ppb (2) 0.28 ppb (3) N/A 5.0 μg/m3 (21) 25.0
 
Jan. 10, 2020, 1 p.m. N/A N/A N/A 28.0 ppb (26) N/A N/A 2.0 ppb (2) 0.24 ppb (3) N/A 2.9 μg/m3 (12) 26.0
 
Jan. 10, 2020, 11 a.m. N/A N/A N/A 27.0 ppb (25) N/A N/A 3.0 ppb (2) 0.21 ppb (2) N/A 4.1 μg/m3 (17) 25.0
 
Jan. 10, 2020, 10 a.m. N/A N/A N/A 29.0 ppb (27) N/A N/A N/A N/A N/A 4.9 μg/m3 (20) 27.0
 
Jan. 10, 2020, 9 a.m. N/A N/A N/A N/A N/A N/A 2.0 ppb (2) 0.27 ppb (3) N/A 6.9 μg/m3 (29) 29.0
 
Jan. 10, 2020, 8 a.m. N/A N/A N/A 36.0 ppb (33) N/A N/A 2.0 ppb (2) 0.32 ppb (4) N/A 8.7 μg/m3 (36) 36.0