AQSQID: 000090222

Site Name: Calgary Northwest

Location: Calgary (Varsity Acres), CC

Reporting: True, Located: True

Current AQI: 55.0

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. 3, 2020, 11 p.m. N/A N/A N/A 8.0 ppb (7) N/A N/A 36.0 ppb (28) 0.5 ppb (6) N/A 5.5 μg/m3 (23) 28.0
 
Jan. 3, 2020, 10 p.m. N/A N/A N/A 14.0 ppb (13) N/A N/A 28.0 ppb (22) 0.55 ppb (6) N/A 9.8 μg/m3 (41) 41.0
 
Jan. 3, 2020, 9 p.m. N/A N/A N/A 15.0 ppb (14) N/A N/A 26.0 ppb (20) 0.55 ppb (6) N/A 12.9 μg/m3 (52) 52.0
 
Jan. 3, 2020, 8 p.m. N/A N/A N/A 13.0 ppb (12) N/A N/A 29.0 ppb (22) 0.54 ppb (6) N/A 8.1 μg/m3 (34) 34.0
 
Jan. 3, 2020, 7 p.m. N/A N/A N/A 10.0 ppb (9) N/A N/A 31.0 ppb (24) 0.52 ppb (6) N/A 5.0 μg/m3 (21) 24.0
 
Jan. 3, 2020, 6 p.m. N/A N/A N/A 11.0 ppb (10) N/A N/A 30.0 ppb (23) 0.51 ppb (6) N/A 1.8 μg/m3 (8) 23.0
 
Jan. 3, 2020, 5 p.m. N/A N/A N/A 10.0 ppb (9) N/A N/A 30.0 ppb (23) 0.5 ppb (6) N/A 1.1 μg/m3 (5) 23.0
 
Jan. 3, 2020, 4 p.m. N/A N/A N/A 13.0 ppb (12) N/A N/A 30.0 ppb (23) 0.48 ppb (5) N/A 0.9 μg/m3 (4) 23.0
 
Jan. 3, 2020, 3 p.m. N/A N/A N/A 12.0 ppb (11) N/A N/A 31.0 ppb (24) 0.48 ppb (5) N/A 1.0 μg/m3 (4) 24.0
 
Jan. 3, 2020, 2 p.m. N/A N/A N/A 11.0 ppb (10) N/A N/A 32.0 ppb (25) 0.47 ppb (5) N/A 1.0 μg/m3 (4) 25.0
 
Jan. 3, 2020, 1 p.m. N/A N/A N/A 12.0 ppb (11) N/A N/A 31.0 ppb (24) 0.46 ppb (5) N/A 0.6 μg/m3 (2) 24.0
 
Jan. 3, 2020, noon N/A N/A N/A 16.0 ppb (15) N/A N/A 28.0 ppb (22) 0.45 ppb (5) N/A 1.0 μg/m3 (4) 22.0
 
Jan. 3, 2020, 11 a.m. N/A N/A N/A 25.0 ppb (23) N/A N/A 20.0 ppb (15) 0.48 ppb (5) N/A 1.9 μg/m3 (8) 23.0
 
Jan. 3, 2020, 10 a.m. N/A N/A N/A 31.0 ppb (29) N/A N/A N/A N/A N/A 2.2 μg/m3 (9) 29.0
 
Jan. 3, 2020, 9 a.m. N/A N/A N/A N/A N/A N/A 6.0 ppb (5) 0.6 ppb (7) N/A 4.1 μg/m3 (17) 17.0
 
Jan. 3, 2020, 8 a.m. N/A N/A N/A 49.0 ppb (45) N/A N/A 1.0 ppb (1) 0.75 ppb (8) N/A 5.3 μg/m3 (22) 45.0
 
Jan. 3, 2020, 7 a.m. N/A N/A N/A 44.0 ppb (41) N/A N/A 2.0 ppb (2) 0.7 ppb (8) N/A 2.7 μg/m3 (11) 41.0
 
Jan. 3, 2020, 6 a.m. N/A N/A N/A 32.0 ppb (30) N/A N/A 10.0 ppb (8) 0.61 ppb (7) N/A 1.5 μg/m3 (6) 30.0
 
Jan. 3, 2020, 5 a.m. N/A N/A N/A 31.0 ppb (29) N/A N/A 12.0 ppb (9) 0.58 ppb (6) N/A 1.8 μg/m3 (8) 29.0
 
Jan. 3, 2020, 4 a.m. N/A N/A N/A 27.0 ppb (25) N/A N/A 17.0 ppb (13) 0.57 ppb (6) N/A 1.3 μg/m3 (5) 25.0
 
Jan. 3, 2020, 3 a.m. N/A N/A N/A 17.0 ppb (16) N/A N/A 27.0 ppb (21) 0.55 ppb (6) N/A 1.1 μg/m3 (5) 21.0
 
Jan. 3, 2020, 2 a.m. N/A N/A N/A 17.0 ppb (16) N/A N/A 27.0 ppb (21) 0.53 ppb (6) N/A 1.1 μg/m3 (5) 21.0
 
Jan. 3, 2020, 1 a.m. N/A N/A N/A 10.0 ppb (9) N/A N/A 34.0 ppb (26) 0.48 ppb (5) N/A 1.3 μg/m3 (5) 26.0
 
Jan. 3, 2020, midnight N/A N/A N/A 6.0 ppb (6) N/A N/A 38.0 ppb (29) 0.46 ppb (5) N/A 1.1 μg/m3 (5) 29.0
 
Jan. 2, 2020, 11 p.m. N/A N/A N/A 6.0 ppb (6) N/A N/A 38.0 ppb (29) 0.47 ppb (5) N/A 1.7 μg/m3 (7) 29.0
 
Jan. 2, 2020, 10 p.m. N/A N/A N/A 4.0 ppb (4) N/A N/A 41.0 ppb (32) 0.45 ppb (5) N/A 1.4 μg/m3 (6) 32.0
 
Jan. 2, 2020, 9 p.m. N/A N/A N/A 3.0 ppb (3) N/A N/A 42.0 ppb (32) 0.45 ppb (5) N/A 0.9 μg/m3 (4) 32.0
 
Jan. 2, 2020, 8 p.m. N/A N/A N/A 3.0 ppb (3) N/A N/A 41.0 ppb (32) 0.45 ppb (5) N/A 0.7 μg/m3 (3) 32.0
 
Jan. 2, 2020, 7 p.m. N/A N/A N/A 3.0 ppb (3) N/A N/A 41.0 ppb (32) 0.45 ppb (5) N/A 0.6 μg/m3 (2) 32.0
 
Jan. 2, 2020, 6 p.m. N/A N/A N/A 2.0 ppb (2) N/A N/A 41.0 ppb (32) 0.44 ppb (5) N/A 0.2 μg/m3 (1) 32.0
 
Jan. 2, 2020, 5 p.m. N/A N/A N/A 3.0 ppb (3) N/A N/A 40.0 ppb (31) 0.45 ppb (5) N/A -0.1 μg/m3 (0) 31.0
 
Jan. 2, 2020, 4 p.m. N/A N/A N/A 3.0 ppb (3) N/A N/A 41.0 ppb (32) 0.44 ppb (5) N/A -0.3 μg/m3 (0) 32.0
 
Jan. 2, 2020, 3 p.m. N/A N/A N/A 3.0 ppb (3) N/A N/A 40.0 ppb (31) 0.44 ppb (5) N/A -0.1 μg/m3 (0) 31.0
 
Jan. 2, 2020, 2 p.m. N/A N/A N/A 3.0 ppb (3) N/A N/A 37.0 ppb (28) 0.45 ppb (5) N/A -0.2 μg/m3 (0) 28.0
 
Jan. 2, 2020, 1 p.m. N/A N/A N/A 3.0 ppb (3) N/A N/A 35.0 ppb (27) 0.44 ppb (5) N/A 0.1 μg/m3 (0) 27.0
 
Jan. 2, 2020, noon N/A N/A N/A 7.0 ppb (6) N/A N/A 30.0 ppb (23) 0.45 ppb (5) N/A 0.2 μg/m3 (1) 23.0
 
Jan. 2, 2020, 11 a.m. N/A N/A N/A 7.0 ppb (6) N/A N/A 30.0 ppb (23) 0.45 ppb (5) N/A -0.1 μg/m3 (0) 23.0
 
Jan. 2, 2020, 10 a.m. N/A N/A N/A 8.0 ppb (7) N/A N/A N/A N/A N/A 0.1 μg/m3 (0) 7.0
 
Jan. 2, 2020, 9 a.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (21) 0.45 ppb (5) N/A 0.2 μg/m3 (1) 21.0
 
Jan. 2, 2020, 8 a.m. N/A N/A N/A 8.0 ppb (7) N/A N/A 22.0 ppb (17) 0.47 ppb (5) N/A 0.9 μg/m3 (4) 17.0
 
Jan. 2, 2020, 7 a.m. N/A N/A N/A 10.0 ppb (9) N/A N/A 17.0 ppb (13) 0.48 ppb (5) N/A 1.3 μg/m3 (5) 13.0
 
Jan. 2, 2020, 6 a.m. N/A N/A N/A 19.0 ppb (18) N/A N/A 10.0 ppb (8) 0.53 ppb (6) N/A 1.7 μg/m3 (7) 18.0
 
Jan. 2, 2020, 5 a.m. N/A N/A N/A 28.0 ppb (26) N/A N/A 4.0 ppb (3) 0.68 ppb (8) N/A 2.2 μg/m3 (9) 26.0
 
Jan. 2, 2020, 4 a.m. N/A N/A N/A 13.0 ppb (12) N/A N/A 20.0 ppb (15) 0.54 ppb (6) N/A 0.9 μg/m3 (4) 15.0
 
Jan. 2, 2020, 3 a.m. N/A N/A N/A 27.0 ppb (25) N/A N/A 5.0 ppb (4) 0.88 ppb (10) N/A 3.2 μg/m3 (13) 25.0
 
Jan. 2, 2020, 1 a.m. N/A N/A N/A 30.0 ppb (28) N/A N/A 1.0 ppb (1) 0.98 ppb (11) N/A 5.0 μg/m3 (21) 28.0
 
Jan. 2, 2020, midnight N/A N/A N/A 30.0 ppb (28) N/A N/A 1.0 ppb (1) 0.89 ppb (10) N/A 5.1 μg/m3 (21) 28.0
 
Jan. 1, 2020, 11 p.m. N/A N/A N/A 16.0 ppb (15) N/A N/A 14.0 ppb (11) 0.59 ppb (7) N/A 2.6 μg/m3 (11) 15.0
 
Jan. 1, 2020, 10 p.m. N/A N/A N/A 5.0 ppb (5) N/A N/A 27.0 ppb (21) 0.48 ppb (5) N/A 1.6 μg/m3 (7) 21.0
 
Jan. 1, 2020, 8 p.m. N/A N/A N/A 4.0 ppb (4) N/A N/A 28.0 ppb (22) 0.48 ppb (5) N/A 4.5 μg/m3 (19) 22.0
 
Jan. 1, 2020, 7 p.m. N/A N/A N/A 3.0 ppb (3) N/A N/A 29.0 ppb (22) 0.47 ppb (5) N/A 6.2 μg/m3 (26) 26.0
 
Jan. 1, 2020, 6 p.m. N/A N/A N/A 5.0 ppb (5) N/A N/A 29.0 ppb (22) 0.47 ppb (5) N/A 6.5 μg/m3 (27) 27.0
 
Jan. 1, 2020, 5 p.m. N/A N/A N/A 7.0 ppb (6) N/A N/A 27.0 ppb (21) 0.48 ppb (5) N/A 8.0 μg/m3 (33) 33.0
 
Jan. 1, 2020, 4 p.m. N/A N/A N/A 5.0 ppb (5) N/A N/A 29.0 ppb (22) 0.46 ppb (5) N/A 5.4 μg/m3 (23) 23.0
 
Jan. 1, 2020, 3 p.m. N/A N/A N/A 14.0 ppb (13) N/A N/A 20.0 ppb (15) 0.5 ppb (6) N/A 0.8 μg/m3 (3) 15.0
 
Jan. 1, 2020, 2 p.m. N/A N/A N/A 17.0 ppb (16) N/A N/A 14.0 ppb (11) 0.52 ppb (6) N/A 0.5 μg/m3 (2) 16.0
 
Jan. 1, 2020, 1 p.m. N/A N/A N/A 23.0 ppb (21) N/A N/A 7.0 ppb (5) 0.56 ppb (6) N/A 1.4 μg/m3 (6) 21.0
 
Jan. 1, 2020, noon N/A N/A N/A 14.0 ppb (13) N/A N/A 15.0 ppb (12) 0.5 ppb (6) N/A 1.9 μg/m3 (8) 13.0
 
Jan. 1, 2020, 11 a.m. N/A N/A N/A 18.0 ppb (17) N/A N/A 12.0 ppb (9) 0.48 ppb (5) N/A 2.3 μg/m3 (10) 17.0
 
Jan. 1, 2020, 9 a.m. N/A N/A N/A N/A N/A N/A 15.0 ppb (12) 0.54 ppb (6) N/A 3.6 μg/m3 (15) 15.0
 
Jan. 1, 2020, 8 a.m. N/A N/A N/A 20.0 ppb (19) N/A N/A 13.0 ppb (10) 0.57 ppb (6) N/A 4.5 μg/m3 (19) 19.0
 
Jan. 1, 2020, 7 a.m. N/A N/A N/A 15.0 ppb (14) N/A N/A 18.0 ppb (14) 0.5 ppb (6) N/A 2.5 μg/m3 (10) 14.0
 
Jan. 1, 2020, 6 a.m. N/A N/A N/A 9.0 ppb (8) N/A N/A 24.0 ppb (18) 0.48 ppb (5) N/A 3.8 μg/m3 (16) 18.0
 
Jan. 1, 2020, 5 a.m. N/A N/A N/A 7.0 ppb (6) N/A N/A 28.0 ppb (22) 0.47 ppb (5) N/A 4.1 μg/m3 (17) 22.0
 
Jan. 1, 2020, 4 a.m. N/A N/A N/A 9.0 ppb (8) N/A N/A 26.0 ppb (20) 0.5 ppb (6) N/A 4.7 μg/m3 (20) 20.0
 
Jan. 1, 2020, 3 a.m. N/A N/A N/A 8.0 ppb (7) N/A N/A 28.0 ppb (22) 0.45 ppb (5) N/A 4.4 μg/m3 (18) 22.0
 
Jan. 1, 2020, 2 a.m. N/A N/A N/A 3.0 ppb (3) N/A N/A 33.0 ppb (25) 0.44 ppb (5) N/A 2.4 μg/m3 (10) 25.0
 
Jan. 1, 2020, midnight N/A N/A N/A 3.0 ppb (3) N/A N/A 34.0 ppb (26) 0.44 ppb (5) N/A 2.4 μg/m3 (10) 26.0
 
Dec. 31, 2019, 11 p.m. N/A N/A N/A 4.0 ppb (4) N/A N/A 33.0 ppb (25) 0.45 ppb (5) N/A 2.7 μg/m3 (11) 25.0
 
Dec. 31, 2019, 10 p.m. N/A N/A N/A 2.0 ppb (2) N/A N/A 35.0 ppb (27) 0.42 ppb (5) N/A 1.2 μg/m3 (5) 27.0
 
Dec. 31, 2019, 9 p.m. N/A N/A N/A 2.0 ppb (2) N/A N/A 35.0 ppb (27) 0.43 ppb (5) N/A 1.5 μg/m3 (6) 27.0
 
Dec. 31, 2019, 7 p.m. N/A N/A N/A 3.0 ppb (3) N/A N/A 35.0 ppb (27) 0.43 ppb (5) N/A 1.7 μg/m3 (7) 27.0
 
Dec. 31, 2019, 6 p.m. N/A N/A N/A 2.0 ppb (2) N/A N/A 36.0 ppb (28) 0.42 ppb (5) N/A 1.6 μg/m3 (7) 28.0
 
Dec. 31, 2019, 5 p.m. N/A N/A N/A 3.0 ppb (3) N/A N/A 35.0 ppb (27) 0.42 ppb (5) N/A 1.2 μg/m3 (5) 27.0
 
Dec. 31, 2019, 4 p.m. N/A N/A N/A 3.0 ppb (3) N/A N/A 35.0 ppb (27) 0.41 ppb (5) N/A 0.8 μg/m3 (3) 27.0
 
Dec. 31, 2019, 2 p.m. N/A N/A N/A 4.0 ppb (4) N/A N/A 35.0 ppb (27) 0.41 ppb (5) N/A 0.8 μg/m3 (3) 27.0
 
Dec. 31, 2019, 1 p.m. N/A N/A N/A 4.0 ppb (4) N/A N/A 36.0 ppb (28) 0.4 ppb (4) N/A 0.7 μg/m3 (3) 28.0
 
Dec. 31, 2019, noon N/A N/A N/A 3.0 ppb (3) N/A N/A 37.0 ppb (28) 0.4 ppb (4) N/A 0.7 μg/m3 (3) 28.0
 
Dec. 31, 2019, 11 a.m. N/A N/A N/A 2.0 ppb (2) N/A N/A 38.0 ppb (29) 0.4 ppb (4) N/A 0.6 μg/m3 (2) 29.0
 
Dec. 31, 2019, 10 a.m. N/A N/A N/A 2.0 ppb (2) N/A N/A N/A N/A N/A 0.6 μg/m3 (2) 2.0
 
Dec. 31, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (31) 0.4 ppb (4) N/A 0.9 μg/m3 (4) 31.0
 
Dec. 31, 2019, 8 a.m. N/A N/A N/A 4.0 ppb (4) N/A N/A 39.0 ppb (30) 0.41 ppb (5) N/A 1.2 μg/m3 (5) 30.0
 
Dec. 31, 2019, 7 a.m. N/A N/A N/A 2.0 ppb (2) N/A N/A 42.0 ppb (32) 0.4 ppb (4) N/A 0.9 μg/m3 (4) 32.0
 
Dec. 31, 2019, 6 a.m. N/A N/A N/A 2.0 ppb (2) N/A N/A 43.0 ppb (33) 0.4 ppb (4) N/A 1.2 μg/m3 (5) 33.0
 
Dec. 31, 2019, 5 a.m. N/A N/A N/A 2.0 ppb (2) N/A N/A 43.0 ppb (33) 0.4 ppb (4) N/A 2.5 μg/m3 (10) 33.0
 
Dec. 31, 2019, 4 a.m. N/A N/A N/A 3.0 ppb (3) N/A N/A 41.0 ppb (32) 0.41 ppb (5) N/A 1.7 μg/m3 (7) 32.0
 
Dec. 31, 2019, 3 a.m. N/A N/A N/A 4.0 ppb (4) N/A N/A 41.0 ppb (32) 0.41 ppb (5) N/A 1.5 μg/m3 (6) 32.0
 
Dec. 31, 2019, 2 a.m. N/A N/A N/A 5.0 ppb (5) N/A N/A 39.0 ppb (30) 0.42 ppb (5) N/A 1.8 μg/m3 (8) 30.0
 
Dec. 31, 2019, 1 a.m. N/A N/A N/A 5.0 ppb (5) N/A N/A 40.0 ppb (31) 0.43 ppb (5) N/A 3.3 μg/m3 (14) 31.0
 
Dec. 31, 2019, midnight N/A N/A N/A 4.0 ppb (4) N/A N/A 43.0 ppb (33) 0.42 ppb (5) N/A 2.1 μg/m3 (9) 33.0
 
Dec. 30, 2019, 11 p.m. N/A N/A N/A 6.0 ppb (6) N/A N/A 40.0 ppb (31) 0.45 ppb (5) N/A 3.2 μg/m3 (13) 31.0
 
Dec. 30, 2019, 10 p.m. N/A N/A N/A 9.0 ppb (8) N/A N/A 37.0 ppb (28) 0.47 ppb (5) N/A 4.7 μg/m3 (20) 28.0
 
Dec. 30, 2019, 9 p.m. N/A N/A N/A 9.0 ppb (8) N/A N/A 34.0 ppb (26) 0.46 ppb (5) N/A 3.1 μg/m3 (13) 26.0
 
Dec. 30, 2019, 8 p.m. N/A N/A N/A 11.0 ppb (10) N/A N/A 31.0 ppb (24) 0.45 ppb (5) N/A 1.8 μg/m3 (8) 24.0
 
Dec. 30, 2019, 5 p.m. N/A N/A N/A 8.0 ppb (7) N/A N/A 28.0 ppb (22) 0.43 ppb (5) N/A 0.3 μg/m3 (1) 22.0
 
Dec. 30, 2019, 4 p.m. N/A N/A N/A 10.0 ppb (9) N/A N/A 26.0 ppb (20) 0.43 ppb (5) N/A 0.2 μg/m3 (1) 20.0
 
Dec. 30, 2019, 3 p.m. N/A N/A N/A 10.0 ppb (9) N/A N/A 25.0 ppb (19) 0.42 ppb (5) N/A 0.2 μg/m3 (1) 19.0
 
Dec. 30, 2019, 2 p.m. N/A N/A N/A 11.0 ppb (10) N/A N/A 23.0 ppb (18) 0.41 ppb (5) N/A 0.4 μg/m3 (2) 18.0
 
Dec. 30, 2019, 1 p.m. N/A N/A N/A 11.0 ppb (10) N/A N/A 22.0 ppb (17) 0.4 ppb (4) N/A 0.8 μg/m3 (3) 17.0
 
Dec. 30, 2019, noon N/A N/A N/A 12.0 ppb (11) N/A N/A 20.0 ppb (15) 0.4 ppb (4) N/A 1.8 μg/m3 (8) 15.0
 
Dec. 30, 2019, 11 a.m. N/A N/A N/A 18.0 ppb (17) N/A N/A 13.0 ppb (10) 0.42 ppb (5) N/A 1.2 μg/m3 (5) 17.0
 
Dec. 30, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A 9.0 ppb (7) 0.42 ppb (5) N/A 2.2 μg/m3 (9) 9.0
 
Dec. 30, 2019, 8 a.m. N/A N/A N/A 20.0 ppb (19) N/A N/A 10.0 ppb (8) 0.42 ppb (5) N/A 3.5 μg/m3 (15) 19.0
 
Dec. 30, 2019, 7 a.m. N/A N/A N/A 22.0 ppb (20) N/A N/A 9.0 ppb (7) 0.43 ppb (5) N/A 3.0 μg/m3 (12) 20.0
 
Dec. 30, 2019, 6 a.m. N/A N/A N/A 15.0 ppb (14) N/A N/A 16.0 ppb (12) 0.43 ppb (5) N/A 2.1 μg/m3 (9) 14.0
 
Dec. 30, 2019, 5 a.m. N/A N/A N/A 12.0 ppb (11) N/A N/A 19.0 ppb (15) 0.43 ppb (5) N/A 1.9 μg/m3 (8) 15.0
 
Dec. 30, 2019, 4 a.m. N/A N/A N/A 13.0 ppb (12) N/A N/A 19.0 ppb (15) 0.43 ppb (5) N/A 1.6 μg/m3 (7) 15.0
 
Dec. 30, 2019, 2 a.m. N/A N/A N/A 12.0 ppb (11) N/A N/A 22.0 ppb (17) 0.44 ppb (5) N/A 1.4 μg/m3 (6) 17.0
 
Dec. 30, 2019, 1 a.m. N/A N/A N/A 12.0 ppb (11) N/A N/A 23.0 ppb (18) 0.47 ppb (5) N/A 1.3 μg/m3 (5) 18.0
 
Dec. 30, 2019, midnight N/A N/A N/A 12.0 ppb (11) N/A N/A 24.0 ppb (18) 0.49 ppb (5) N/A 1.7 μg/m3 (7) 18.0
 
Dec. 29, 2019, 11 p.m. N/A N/A N/A 15.0 ppb (14) N/A N/A 22.0 ppb (17) 0.51 ppb (6) N/A 2.9 μg/m3 (12) 17.0
 
Dec. 29, 2019, 10 p.m. N/A N/A N/A 8.0 ppb (7) N/A N/A 29.0 ppb (22) 0.47 ppb (5) N/A 2.3 μg/m3 (10) 22.0
 
Dec. 29, 2019, 9 p.m. N/A N/A N/A 7.0 ppb (6) N/A N/A 30.0 ppb (23) 0.45 ppb (5) N/A 2.0 μg/m3 (8) 23.0
 
Dec. 29, 2019, 8 p.m. N/A N/A N/A 5.0 ppb (5) N/A N/A 31.0 ppb (24) 0.42 ppb (5) N/A 1.0 μg/m3 (4) 24.0
 
Dec. 29, 2019, 7 p.m. N/A N/A N/A 6.0 ppb (6) N/A N/A 30.0 ppb (23) 0.42 ppb (5) N/A 0.7 μg/m3 (3) 23.0
 
Dec. 29, 2019, 6 p.m. N/A N/A N/A 6.0 ppb (6) N/A N/A 30.0 ppb (23) 0.42 ppb (5) N/A 1.3 μg/m3 (5) 23.0
 
Dec. 29, 2019, 5 p.m. N/A N/A N/A 7.0 ppb (6) N/A N/A 29.0 ppb (22) 0.42 ppb (5) N/A 0.2 μg/m3 (1) 22.0
 
Dec. 29, 2019, 4 p.m. N/A N/A N/A 6.0 ppb (6) N/A N/A 30.0 ppb (23) 0.41 ppb (5) N/A 0.1 μg/m3 (0) 23.0
 
Dec. 29, 2019, 3 p.m. N/A N/A N/A 7.0 ppb (6) N/A N/A 29.0 ppb (22) 0.4 ppb (4) N/A 0.0 μg/m3 (0) 22.0
 
Dec. 29, 2019, 2 p.m. N/A N/A N/A 7.0 ppb (6) N/A N/A 30.0 ppb (23) 0.4 ppb (4) N/A 0.0 μg/m3 (0) 23.0
 
Dec. 29, 2019, 1 p.m. N/A N/A N/A 7.0 ppb (6) N/A N/A 30.0 ppb (23) 0.39 ppb (4) N/A 0.0 μg/m3 (0) 23.0
 
Dec. 29, 2019, noon N/A N/A N/A 7.0 ppb (6) N/A N/A 30.0 ppb (23) 0.39 ppb (4) N/A 0.0 μg/m3 (0) 23.0
 
Dec. 29, 2019, 11 a.m. N/A N/A N/A 13.0 ppb (12) N/A N/A 24.0 ppb (18) 0.4 ppb (4) N/A 0.2 μg/m3 (1) 18.0
 
Dec. 29, 2019, 10 a.m. N/A N/A N/A 37.0 ppb (34) N/A N/A N/A N/A N/A 0.8 μg/m3 (3) 34.0
 
Dec. 29, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A 2.0 ppb (2) 0.62 ppb (7) N/A 0.8 μg/m3 (3) 7.0
 
Dec. 29, 2019, 8 a.m. N/A N/A N/A 27.0 ppb (25) N/A N/A 10.0 ppb (8) 0.46 ppb (5) N/A 0.8 μg/m3 (3) 25.0
 
Dec. 29, 2019, 7 a.m. N/A N/A N/A 24.0 ppb (22) N/A N/A 13.0 ppb (10) 0.46 ppb (5) N/A 0.8 μg/m3 (3) 22.0
 
Dec. 29, 2019, 6 a.m. N/A N/A N/A 22.0 ppb (20) N/A N/A 15.0 ppb (12) 0.44 ppb (5) N/A 1.0 μg/m3 (4) 20.0
 
Dec. 29, 2019, 4 a.m. N/A N/A N/A 26.0 ppb (24) N/A N/A 12.0 ppb (9) 0.49 ppb (5) N/A 1.3 μg/m3 (5) 24.0
 
Dec. 29, 2019, 3 a.m. N/A N/A N/A 37.0 ppb (34) N/A N/A 3.0 ppb (2) 0.59 ppb (7) N/A 2.0 μg/m3 (8) 34.0
 
Dec. 29, 2019, 1 a.m. N/A N/A N/A 40.0 ppb (37) N/A N/A 1.0 ppb (1) 0.65 ppb (7) N/A 4.7 μg/m3 (20) 37.0
 
Dec. 28, 2019, 11 p.m. N/A N/A N/A 29.0 ppb (27) N/A N/A 11.0 ppb (8) 0.61 ppb (7) N/A 13.2 μg/m3 (53) 53.0
 
Dec. 28, 2019, 9 p.m. N/A N/A N/A 8.0 ppb (7) N/A N/A 33.0 ppb (25) 0.4 ppb (4) N/A 4.3 μg/m3 (18) 25.0
 
Dec. 28, 2019, 8 p.m. N/A N/A N/A 9.0 ppb (8) N/A N/A 30.0 ppb (23) 0.42 ppb (5) N/A 2.3 μg/m3 (10) 23.0
 
Dec. 28, 2019, 7 p.m. N/A N/A N/A 12.0 ppb (11) N/A N/A 25.0 ppb (19) 0.45 ppb (5) N/A 1.0 μg/m3 (4) 19.0
 
Dec. 28, 2019, 6 p.m. N/A N/A N/A 9.0 ppb (8) N/A N/A 26.0 ppb (20) 0.41 ppb (5) N/A 0.3 μg/m3 (1) 20.0
 
Dec. 28, 2019, 5 p.m. N/A N/A N/A 15.0 ppb (14) N/A N/A 19.0 ppb (15) 0.41 ppb (5) N/A 0.2 μg/m3 (1) 15.0
 
Dec. 28, 2019, 4 p.m. N/A N/A N/A 16.0 ppb (15) N/A N/A 17.0 ppb (13) 0.41 ppb (5) N/A 0.1 μg/m3 (0) 15.0
 
Dec. 28, 2019, 3 p.m. N/A N/A N/A 15.0 ppb (14) N/A N/A 17.0 ppb (13) 0.39 ppb (4) N/A 0.1 μg/m3 (0) 14.0
 
Dec. 28, 2019, 2 p.m. N/A N/A N/A 13.0 ppb (12) N/A N/A 20.0 ppb (15) 0.38 ppb (4) N/A 0.0 μg/m3 (0) 15.0
 
Dec. 28, 2019, 1 p.m. N/A N/A N/A 10.0 ppb (9) N/A N/A 23.0 ppb (18) 0.37 ppb (4) N/A 0.0 μg/m3 (0) 18.0
 
Dec. 28, 2019, noon N/A N/A N/A 10.0 ppb (9) N/A N/A 23.0 ppb (18) 0.38 ppb (4) N/A 0.0 μg/m3 (0) 18.0
 
Dec. 28, 2019, 11 a.m. N/A N/A N/A 9.0 ppb (8) N/A N/A 24.0 ppb (18) 0.38 ppb (4) N/A 0.0 μg/m3 (0) 18.0
 
Dec. 28, 2019, 10 a.m. N/A N/A N/A 13.0 ppb (12) N/A N/A N/A N/A N/A 0.0 μg/m3 (0) 12.0
 
Dec. 28, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (20) 0.39 ppb (4) N/A 0.1 μg/m3 (0) 20.0
 
Dec. 28, 2019, 8 a.m. N/A N/A N/A 7.0 ppb (6) N/A N/A 28.0 ppb (22) 0.38 ppb (4) N/A 0.0 μg/m3 (0) 22.0
 
Dec. 28, 2019, 7 a.m. N/A N/A N/A 8.0 ppb (7) N/A N/A 28.0 ppb (22) 0.38 ppb (4) N/A 0.1 μg/m3 (0) 22.0
 
Dec. 28, 2019, 6 a.m. N/A N/A N/A 8.0 ppb (7) N/A N/A 28.0 ppb (22) 0.38 ppb (4) N/A 0.2 μg/m3 (1) 22.0
 
Dec. 28, 2019, 5 a.m. N/A N/A N/A 9.0 ppb (8) N/A N/A 28.0 ppb (22) 0.4 ppb (4) N/A 0.4 μg/m3 (2) 22.0
 
Dec. 28, 2019, 4 a.m. N/A N/A N/A 8.0 ppb (7) N/A N/A 29.0 ppb (22) 0.4 ppb (4) N/A 0.5 μg/m3 (2) 22.0
 
Dec. 28, 2019, 3 a.m. N/A N/A N/A 9.0 ppb (8) N/A N/A 28.0 ppb (22) 0.41 ppb (5) N/A 0.5 μg/m3 (2) 22.0
 
Dec. 28, 2019, 2 a.m. N/A N/A N/A 10.0 ppb (9) N/A N/A 27.0 ppb (21) 0.42 ppb (5) N/A 0.8 μg/m3 (3) 21.0
 
Dec. 28, 2019, midnight N/A N/A N/A 10.0 ppb (9) N/A N/A 28.0 ppb (22) 0.42 ppb (5) N/A 0.3 μg/m3 (1) 22.0
 
Dec. 27, 2019, 11 p.m. N/A N/A N/A 13.0 ppb (12) N/A N/A 26.0 ppb (20) 0.41 ppb (5) N/A 0.6 μg/m3 (2) 20.0
 
Dec. 27, 2019, 10 p.m. N/A N/A N/A 5.0 ppb (5) N/A N/A 34.0 ppb (26) 0.38 ppb (4) N/A 0.4 μg/m3 (2) 26.0
 
Dec. 27, 2019, 9 p.m. N/A N/A N/A 2.0 ppb (2) N/A N/A 37.0 ppb (28) 0.37 ppb (4) N/A 0.3 μg/m3 (1) 28.0
 
Dec. 27, 2019, 8 p.m. N/A N/A N/A 2.0 ppb (2) N/A N/A 38.0 ppb (29) 0.37 ppb (4) N/A 0.5 μg/m3 (2) 29.0
 
Dec. 27, 2019, 7 p.m. N/A N/A N/A 3.0 ppb (3) N/A N/A 38.0 ppb (29) 0.37 ppb (4) N/A 0.4 μg/m3 (2) 29.0
 
Dec. 27, 2019, 6 p.m. N/A N/A N/A 3.0 ppb (3) N/A N/A 37.0 ppb (28) 0.37 ppb (4) N/A 0.2 μg/m3 (1) 28.0
 
Dec. 27, 2019, 5 p.m. N/A N/A N/A 7.0 ppb (6) N/A N/A 34.0 ppb (26) 0.39 ppb (4) N/A 0.2 μg/m3 (1) 26.0
 
Dec. 27, 2019, 4 p.m. N/A N/A N/A 8.0 ppb (7) N/A N/A 33.0 ppb (25) 0.38 ppb (4) N/A 0.0 μg/m3 (0) 25.0
 
Dec. 27, 2019, 3 p.m. N/A N/A N/A 12.0 ppb (11) N/A N/A 31.0 ppb (24) 0.39 ppb (4) N/A 0.0 μg/m3 (0) 24.0
 
Dec. 27, 2019, 2 p.m. N/A N/A N/A 12.0 ppb (11) N/A N/A 30.0 ppb (23) 0.38 ppb (4) N/A 0.0 μg/m3 (0) 23.0
 
Dec. 27, 2019, 1 p.m. N/A N/A N/A 5.0 ppb (5) N/A N/A 37.0 ppb (28) 0.35 ppb (4) N/A -0.1 μg/m3 (0) 28.0
 
Dec. 27, 2019, noon N/A N/A N/A 6.0 ppb (6) N/A N/A 36.0 ppb (28) 0.36 ppb (4) N/A -0.1 μg/m3 (0) 28.0
 
Dec. 27, 2019, 11 a.m. N/A N/A N/A 5.0 ppb (5) N/A N/A 37.0 ppb (28) 0.35 ppb (4) N/A -0.1 μg/m3 (0) 28.0
 
Dec. 27, 2019, 10 a.m. N/A N/A N/A 5.0 ppb (5) N/A N/A N/A N/A N/A -0.1 μg/m3 (0) 5.0
 
Dec. 27, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) 0.37 ppb (4) N/A -0.1 μg/m3 (0) 27.0