AQSQID: 000090222

Site Name: Calgary Northwest

Location: Calgary (32 Ave NW), CC

Reporting: True, Located: True

Current AQI: 72.0

Calgary (32 Ave NW) CC, CA: 51.0814, -114.1403

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
Sept. 23, 2019, midnight N/A N/A N/A 3.0 ppb (3) N/A N/A 29.0 ppb (22) 0.26 ppb (3) N/A 22.3 μg/m3 (72) 72.0
 
Sept. 22, 2019, 11 p.m. N/A N/A N/A 3.0 ppb (3) N/A N/A 31.0 ppb (24) 0.25 ppb (3) N/A 16.2 μg/m3 (59) 59.0
 
Sept. 22, 2019, 10 p.m. N/A N/A N/A 2.0 ppb (2) N/A N/A 33.0 ppb (25) 0.23 ppb (3) N/A 12.3 μg/m3 (51) 51.0
 
Sept. 22, 2019, 9 p.m. N/A N/A N/A 1.0 ppb (1) N/A N/A 34.0 ppb (26) 0.22 ppb (2) N/A 10.8 μg/m3 (45) 45.0
 
Sept. 22, 2019, 8 p.m. N/A N/A N/A 1.0 ppb (1) N/A N/A 34.0 ppb (26) 0.22 ppb (2) N/A 9.9 μg/m3 (41) 41.0
 
Sept. 22, 2019, 7 p.m. N/A N/A N/A 1.0 ppb (1) N/A N/A 34.0 ppb (26) 0.22 ppb (2) N/A 9.6 μg/m3 (40) 40.0
 
Sept. 22, 2019, 6 p.m. N/A N/A N/A 1.0 ppb (1) N/A N/A 32.0 ppb (25) 0.22 ppb (2) N/A 8.9 μg/m3 (37) 37.0
 
Sept. 22, 2019, 5 p.m. N/A N/A N/A 2.0 ppb (2) N/A N/A 29.0 ppb (22) 0.24 ppb (3) N/A 6.0 μg/m3 (25) 25.0
 
Sept. 22, 2019, 4 p.m. N/A N/A N/A 4.0 ppb (4) N/A N/A 21.0 ppb (16) 0.25 ppb (3) N/A 3.0 μg/m3 (12) 16.0
 
Sept. 22, 2019, 3 p.m. N/A N/A N/A 3.0 ppb (3) N/A N/A 22.0 ppb (17) 0.25 ppb (3) N/A 0.9 μg/m3 (4) 17.0
 
Sept. 22, 2019, 2 p.m. N/A N/A N/A 6.0 ppb (6) N/A N/A 16.0 ppb (12) 0.26 ppb (3) N/A 0.1 μg/m3 (0) 12.0
 
Sept. 22, 2019, 1 p.m. N/A N/A N/A 9.0 ppb (8) N/A N/A 11.0 ppb (8) 0.25 ppb (3) N/A 0.1 μg/m3 (0) 8.0
 
Sept. 22, 2019, noon N/A N/A N/A 7.0 ppb (6) N/A N/A 13.0 ppb (10) 0.25 ppb (3) N/A -0.3 μg/m3 (0) 10.0
 
Sept. 22, 2019, 11 a.m. N/A N/A N/A 4.0 ppb (4) N/A N/A 17.0 ppb (13) 0.23 ppb (3) N/A -1.0 μg/m3 (0) 13.0
 
Sept. 22, 2019, 10 a.m. N/A N/A N/A 3.0 ppb (3) N/A N/A N/A N/A N/A -0.9 μg/m3 (0) 3.0
 
Sept. 22, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A 17.0 ppb (13) 0.23 ppb (3) N/A 0.0 μg/m3 (0) 13.0
 
Sept. 22, 2019, 8 a.m. N/A N/A N/A 3.0 ppb (3) N/A N/A 15.0 ppb (12) 0.25 ppb (3) N/A 3.1 μg/m3 (13) 13.0
 
Sept. 22, 2019, 7 a.m. N/A N/A N/A 2.0 ppb (2) N/A N/A 16.0 ppb (12) 0.24 ppb (3) N/A 2.7 μg/m3 (11) 12.0
 
Sept. 22, 2019, 6 a.m. N/A N/A N/A 1.0 ppb (1) N/A N/A 17.0 ppb (13) 0.24 ppb (3) N/A 2.8 μg/m3 (12) 13.0
 
Sept. 22, 2019, 5 a.m. N/A N/A N/A 4.0 ppb (4) N/A N/A 16.0 ppb (12) 0.3 ppb (3) N/A 7.9 μg/m3 (33) 33.0
 
Sept. 22, 2019, 4 a.m. N/A N/A N/A 10.0 ppb (9) N/A N/A 12.0 ppb (9) 0.44 ppb (5) N/A N/A 9.0
 
Sept. 22, 2019, 3 a.m. N/A N/A N/A 19.0 ppb (18) N/A N/A 5.0 ppb (4) 0.6 ppb (7) N/A 87.3 μg/m3 (167) 167.0
 
Sept. 22, 2019, 2 a.m. N/A N/A N/A 10.0 ppb (9) N/A N/A 13.0 ppb (10) 0.38 ppb (4) N/A 40.0 μg/m3 (111) 111.0
 
Sept. 22, 2019, 1 a.m. N/A N/A N/A 7.0 ppb (6) N/A N/A 21.0 ppb (16) 0.31 ppb (3) N/A 19.3 μg/m3 (66) 66.0
 
Sept. 22, 2019, midnight N/A N/A N/A 2.0 ppb (2) N/A N/A 27.0 ppb (21) 0.25 ppb (3) N/A 11.9 μg/m3 (50) 50.0
 
Sept. 21, 2019, 11 p.m. N/A N/A N/A 1.0 ppb (1) N/A N/A 28.0 ppb (22) 0.24 ppb (3) N/A 11.2 μg/m3 (47) 47.0
 
Sept. 21, 2019, 10 p.m. N/A N/A N/A 1.0 ppb (1) N/A N/A 29.0 ppb (22) 0.24 ppb (3) N/A 9.6 μg/m3 (40) 40.0
 
Sept. 21, 2019, 9 p.m. N/A N/A N/A 1.0 ppb (1) N/A N/A 31.0 ppb (24) 0.24 ppb (3) N/A 8.5 μg/m3 (35) 35.0
 
Sept. 21, 2019, 8 p.m. N/A N/A N/A 1.0 ppb (1) N/A N/A 31.0 ppb (24) 0.24 ppb (3) N/A 7.9 μg/m3 (33) 33.0
 
Sept. 21, 2019, 7 p.m. N/A N/A N/A 2.0 ppb (2) N/A N/A 30.0 ppb (23) 0.25 ppb (3) N/A 5.5 μg/m3 (23) 23.0
 
Sept. 21, 2019, 6 p.m. N/A N/A N/A 3.0 ppb (3) N/A N/A 28.0 ppb (22) 0.25 ppb (3) N/A 2.7 μg/m3 (11) 22.0
 
Sept. 21, 2019, 5 p.m. N/A N/A N/A 6.0 ppb (6) N/A N/A 16.0 ppb (12) 0.29 ppb (3) N/A 14.5 μg/m3 (55) 55.0
 
Sept. 21, 2019, 4 p.m. N/A N/A N/A 8.0 ppb (7) N/A N/A 9.0 ppb (7) 0.29 ppb (3) N/A 14.9 μg/m3 (56) 56.0
 
Sept. 21, 2019, 3 p.m. N/A N/A N/A 7.0 ppb (6) N/A N/A 5.0 ppb (4) 0.28 ppb (3) N/A 12.2 μg/m3 (50) 50.0
 
Sept. 21, 2019, 2 p.m. N/A N/A N/A 7.0 ppb (6) N/A N/A 3.0 ppb (2) 0.28 ppb (3) N/A 9.2 μg/m3 (38) 38.0
 
Sept. 21, 2019, 1 p.m. N/A N/A N/A 8.0 ppb (7) N/A N/A 2.0 ppb (2) 0.26 ppb (3) N/A 4.1 μg/m3 (17) 17.0
 
Sept. 21, 2019, noon N/A N/A N/A 7.0 ppb (6) N/A N/A 2.0 ppb (2) 0.25 ppb (3) N/A 1.9 μg/m3 (8) 8.0
 
Sept. 21, 2019, 11 a.m. N/A N/A N/A 7.0 ppb (6) N/A N/A 1.0 ppb (1) 0.27 ppb (3) N/A 0.7 μg/m3 (3) 6.0
 
Sept. 21, 2019, 10 a.m. N/A N/A N/A 8.0 ppb (7) N/A N/A N/A N/A N/A -2.2 μg/m3 (0) 7.0
 
Sept. 21, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A 4.0 ppb (3) 0.26 ppb (3) N/A -1.5 μg/m3 (0) 3.0
 
Sept. 21, 2019, 8 a.m. N/A N/A N/A 5.0 ppb (5) N/A N/A 6.0 ppb (5) 0.26 ppb (3) N/A -3.0 μg/m3 (0) 5.0
 
Sept. 21, 2019, 7 a.m. N/A N/A N/A 8.0 ppb (7) N/A N/A 5.0 ppb (4) 0.28 ppb (3) N/A -3.7 μg/m3 (0) 7.0
 
Sept. 21, 2019, 6 a.m. N/A N/A N/A 7.0 ppb (6) N/A N/A 6.0 ppb (5) 0.28 ppb (3) N/A -2.3 μg/m3 (0) 6.0
 
Sept. 21, 2019, 5 a.m. N/A N/A N/A 6.0 ppb (6) N/A N/A 9.0 ppb (7) 0.28 ppb (3) N/A -0.4 μg/m3 (0) 7.0
 
Sept. 21, 2019, 4 a.m. N/A N/A N/A 4.0 ppb (4) N/A N/A 14.0 ppb (11) 0.27 ppb (3) N/A 1.1 μg/m3 (5) 11.0
 
Sept. 21, 2019, 3 a.m. N/A N/A N/A 3.0 ppb (3) N/A N/A 17.0 ppb (13) 0.26 ppb (3) N/A 1.8 μg/m3 (8) 13.0
 
Sept. 21, 2019, 2 a.m. N/A N/A N/A 4.0 ppb (4) N/A N/A 17.0 ppb (13) 0.28 ppb (3) N/A 7.1 μg/m3 (30) 30.0
 
Sept. 21, 2019, 1 a.m. N/A N/A N/A 4.0 ppb (4) N/A N/A 20.0 ppb (15) 0.28 ppb (3) N/A 8.6 μg/m3 (36) 36.0
 
Sept. 21, 2019, midnight N/A N/A N/A 4.0 ppb (4) N/A N/A 21.0 ppb (16) 0.27 ppb (3) N/A 6.7 μg/m3 (28) 28.0
 
Sept. 20, 2019, 11 p.m. N/A N/A N/A 3.0 ppb (3) N/A N/A 26.0 ppb (20) 0.25 ppb (3) N/A 2.9 μg/m3 (12) 20.0
 
Sept. 20, 2019, 10 p.m. N/A N/A N/A 2.0 ppb (2) N/A N/A 26.0 ppb (20) 0.25 ppb (3) N/A 5.3 μg/m3 (22) 22.0
 
Sept. 20, 2019, 9 p.m. N/A N/A N/A 2.0 ppb (2) N/A N/A 28.0 ppb (22) 0.25 ppb (3) N/A 0.9 μg/m3 (4) 22.0
 
Sept. 20, 2019, 8 p.m. N/A N/A N/A 2.0 ppb (2) N/A N/A 29.0 ppb (22) 0.24 ppb (3) N/A 0.3 μg/m3 (1) 22.0
 
Sept. 20, 2019, 7 p.m. N/A N/A N/A 2.0 ppb (2) N/A N/A 28.0 ppb (22) 0.38 ppb (4) N/A -0.1 μg/m3 (0) 22.0
 
Sept. 20, 2019, 6 p.m. N/A N/A N/A 2.0 ppb (2) N/A N/A 25.0 ppb (19) 0.31 ppb (3) N/A -0.8 μg/m3 (0) 19.0
 
Sept. 20, 2019, 5 p.m. N/A N/A N/A 2.0 ppb (2) N/A N/A 24.0 ppb (18) 0.32 ppb (4) N/A -2.4 μg/m3 (0) 18.0
 
Sept. 20, 2019, 4 p.m. N/A N/A N/A 9.0 ppb (8) N/A N/A 15.0 ppb (12) 0.3 ppb (3) N/A 6.5 μg/m3 (27) 27.0
 
Sept. 20, 2019, 3 p.m. N/A N/A N/A 15.0 ppb (14) N/A N/A 4.0 ppb (3) 0.31 ppb (3) N/A 12.8 μg/m3 (52) 52.0
 
Sept. 20, 2019, 2 p.m. N/A N/A N/A 15.0 ppb (14) N/A N/A 2.0 ppb (2) 0.31 ppb (3) N/A 14.8 μg/m3 (56) 56.0
 
Sept. 20, 2019, 1 p.m. N/A N/A N/A 13.0 ppb (12) N/A N/A 4.0 ppb (3) 0.28 ppb (3) N/A 8.0 μg/m3 (33) 33.0
 
Sept. 20, 2019, noon N/A N/A N/A 7.0 ppb (6) N/A N/A 10.0 ppb (8) 0.27 ppb (3) N/A 4.0 μg/m3 (17) 17.0
 
Sept. 20, 2019, 11 a.m. N/A N/A N/A 5.0 ppb (5) N/A N/A 15.0 ppb (12) 0.27 ppb (3) N/A 2.7 μg/m3 (11) 12.0
 
Sept. 20, 2019, 10 a.m. N/A N/A N/A 4.0 ppb (4) N/A N/A N/A N/A N/A 2.0 μg/m3 (8) 8.0
 
Sept. 20, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (17) 0.25 ppb (3) N/A 3.0 μg/m3 (12) 17.0
 
Sept. 20, 2019, 8 a.m. N/A N/A N/A 10.0 ppb (9) N/A N/A 12.0 ppb (9) 0.26 ppb (3) N/A 7.2 μg/m3 (30) 30.0
 
Sept. 20, 2019, 7 a.m. N/A N/A N/A 12.0 ppb (11) N/A N/A 9.0 ppb (7) 0.28 ppb (3) N/A 8.7 μg/m3 (36) 36.0
 
Sept. 20, 2019, 6 a.m. N/A N/A N/A 14.0 ppb (13) N/A N/A 7.0 ppb (5) 0.34 ppb (4) N/A 16.1 μg/m3 (59) 59.0
 
Sept. 20, 2019, 5 a.m. N/A N/A N/A 9.0 ppb (8) N/A N/A 15.0 ppb (12) 0.32 ppb (4) N/A 12.4 μg/m3 (51) 51.0
 
Sept. 20, 2019, 4 a.m. N/A N/A N/A 8.0 ppb (7) N/A N/A 21.0 ppb (16) 0.31 ppb (3) N/A 13.7 μg/m3 (54) 54.0
 
Sept. 20, 2019, 3 a.m. N/A N/A N/A 9.0 ppb (8) N/A N/A 23.0 ppb (18) 0.32 ppb (4) N/A 15.8 μg/m3 (58) 58.0
 
Sept. 20, 2019, 2 a.m. N/A N/A N/A 8.0 ppb (7) N/A N/A 26.0 ppb (20) 0.32 ppb (4) N/A 18.7 μg/m3 (64) 64.0
 
Sept. 20, 2019, 1 a.m. N/A N/A N/A 5.0 ppb (5) N/A N/A 30.0 ppb (23) 0.29 ppb (3) N/A 17.3 μg/m3 (61) 61.0
 
Sept. 20, 2019, midnight N/A N/A N/A 4.0 ppb (4) N/A N/A 33.0 ppb (25) 0.28 ppb (3) N/A 17.6 μg/m3 (62) 62.0
 
Sept. 19, 2019, 11 p.m. N/A N/A N/A 3.0 ppb (3) N/A N/A 35.0 ppb (27) 0.27 ppb (3) N/A 18.8 μg/m3 (64) 64.0
 
Sept. 19, 2019, 10 p.m. N/A N/A N/A 3.0 ppb (3) N/A N/A 36.0 ppb (28) 0.28 ppb (3) N/A 19.0 μg/m3 (65) 65.0
 
Sept. 19, 2019, 9 p.m. N/A N/A N/A 2.0 ppb (2) N/A N/A 37.0 ppb (28) 0.26 ppb (3) N/A 7.5 μg/m3 (31) 31.0
 
Sept. 19, 2019, 8 p.m. N/A N/A N/A 2.0 ppb (2) N/A N/A 35.0 ppb (27) 0.26 ppb (3) N/A 6.0 μg/m3 (25) 27.0
 
Sept. 19, 2019, 7 p.m. N/A N/A N/A 3.0 ppb (3) N/A N/A 33.0 ppb (25) 0.27 ppb (3) N/A 11.0 μg/m3 (46) 46.0
 
Sept. 19, 2019, 6 p.m. N/A N/A N/A 6.0 ppb (6) N/A N/A 24.0 ppb (18) 0.3 ppb (3) N/A 23.7 μg/m3 (75) 75.0
 
Sept. 19, 2019, 5 p.m. N/A N/A N/A 6.0 ppb (6) N/A N/A 14.0 ppb (11) 0.29 ppb (3) N/A 18.1 μg/m3 (63) 63.0
 
Sept. 19, 2019, 4 p.m. N/A N/A N/A 7.0 ppb (6) N/A N/A 7.0 ppb (5) 0.29 ppb (3) N/A 19.8 μg/m3 (67) 67.0
 
Sept. 19, 2019, 3 p.m. N/A N/A N/A 7.0 ppb (6) N/A N/A 8.0 ppb (6) 0.27 ppb (3) N/A 11.5 μg/m3 (48) 48.0
 
Sept. 19, 2019, 2 p.m. N/A N/A N/A 6.0 ppb (6) N/A N/A 10.0 ppb (8) 0.27 ppb (3) N/A 6.2 μg/m3 (26) 26.0
 
Sept. 19, 2019, 1 p.m. N/A N/A N/A 7.0 ppb (6) N/A N/A 11.0 ppb (8) 0.26 ppb (3) N/A 6.6 μg/m3 (28) 28.0
 
Sept. 19, 2019, noon N/A N/A N/A 12.0 ppb (11) N/A N/A 11.0 ppb (8) 0.26 ppb (3) N/A 5.3 μg/m3 (22) 22.0
 
Sept. 19, 2019, 11 a.m. N/A N/A N/A 6.0 ppb (6) N/A N/A 20.0 ppb (15) 0.25 ppb (3) N/A 3.1 μg/m3 (13) 15.0
 
Sept. 19, 2019, 10 a.m. N/A N/A N/A 6.0 ppb (6) N/A N/A N/A N/A N/A 4.3 μg/m3 (18) 18.0
 
Sept. 19, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (17) 0.24 ppb (3) N/A 6.5 μg/m3 (27) 27.0
 
Sept. 19, 2019, 8 a.m. N/A N/A N/A 2.0 ppb (2) N/A N/A 26.0 ppb (20) 0.24 ppb (3) N/A 5.4 μg/m3 (23) 23.0
 
Sept. 18, 2019, 6 p.m. N/A N/A N/A 15.0 ppb (14) N/A N/A 18.0 ppb (14) 0.36 ppb (4) N/A 43.5 μg/m3 (120) 120.0
 
Sept. 18, 2019, 5 p.m. N/A N/A N/A 12.0 ppb (11) N/A N/A 17.0 ppb (13) 0.34 ppb (4) N/A 18.2 μg/m3 (63) 63.0
 
Sept. 18, 2019, 4 p.m. N/A N/A N/A 8.0 ppb (7) N/A N/A 10.0 ppb (8) 0.29 ppb (3) N/A 5.3 μg/m3 (22) 22.0
 
Sept. 18, 2019, 3 p.m. N/A N/A N/A 8.0 ppb (7) N/A N/A 5.0 ppb (4) 0.28 ppb (3) N/A 3.9 μg/m3 (16) 16.0
 
Sept. 18, 2019, 2 p.m. N/A N/A N/A 8.0 ppb (7) N/A N/A 4.0 ppb (3) 0.27 ppb (3) N/A 3.4 μg/m3 (14) 14.0
 
Sept. 18, 2019, 1 p.m. N/A N/A N/A 9.0 ppb (8) N/A N/A 2.0 ppb (2) 0.25 ppb (3) N/A 2.2 μg/m3 (9) 9.0
 
Sept. 18, 2019, noon N/A N/A N/A 9.0 ppb (8) N/A N/A 1.0 ppb (1) 0.23 ppb (3) N/A 2.1 μg/m3 (9) 9.0
 
Sept. 18, 2019, 10 a.m. N/A N/A N/A 9.0 ppb (8) N/A N/A N/A N/A N/A 1.3 μg/m3 (5) 8.0
 
Sept. 18, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A 5.0 ppb (4) 0.23 ppb (3) N/A 2.4 μg/m3 (10) 10.0
 
Sept. 18, 2019, 8 a.m. N/A N/A N/A 6.0 ppb (6) N/A N/A 9.0 ppb (7) 0.24 ppb (3) N/A 4.6 μg/m3 (19) 19.0
 
Sept. 18, 2019, 7 a.m. N/A N/A N/A 7.0 ppb (6) N/A N/A 13.0 ppb (10) 0.24 ppb (3) N/A 7.3 μg/m3 (30) 30.0
 
Sept. 18, 2019, 6 a.m. N/A N/A N/A 11.0 ppb (10) N/A N/A 11.0 ppb (8) 0.27 ppb (3) N/A 4.5 μg/m3 (19) 19.0
 
Sept. 18, 2019, 5 a.m. N/A N/A N/A 6.0 ppb (6) N/A N/A 18.0 ppb (14) 0.28 ppb (3) N/A 2.6 μg/m3 (11) 14.0
 
Sept. 18, 2019, 4 a.m. N/A N/A N/A 6.0 ppb (6) N/A N/A 22.0 ppb (17) 0.27 ppb (3) N/A 3.0 μg/m3 (12) 17.0
 
Sept. 18, 2019, 3 a.m. N/A N/A N/A 2.0 ppb (2) N/A N/A 30.0 ppb (23) 0.24 ppb (3) N/A 5.3 μg/m3 (22) 23.0
 
Sept. 18, 2019, 2 a.m. N/A N/A N/A 6.0 ppb (6) N/A N/A 28.0 ppb (22) 0.27 ppb (3) N/A 18.2 μg/m3 (63) 63.0
 
Sept. 18, 2019, 1 a.m. N/A N/A N/A 7.0 ppb (6) N/A N/A 28.0 ppb (22) 0.27 ppb (3) N/A 18.9 μg/m3 (65) 65.0
 
Sept. 18, 2019, midnight N/A N/A N/A 7.0 ppb (6) N/A N/A 29.0 ppb (22) 0.26 ppb (3) N/A 10.8 μg/m3 (45) 45.0
 
Sept. 17, 2019, 11 p.m. N/A N/A N/A 3.0 ppb (3) N/A N/A 35.0 ppb (27) 0.24 ppb (3) N/A 8.0 μg/m3 (33) 33.0
 
Sept. 17, 2019, 10 p.m. N/A N/A N/A 2.0 ppb (2) N/A N/A 35.0 ppb (27) 0.24 ppb (3) N/A 9.7 μg/m3 (40) 40.0
 
Sept. 17, 2019, 9 p.m. N/A N/A N/A 3.0 ppb (3) N/A N/A 35.0 ppb (27) 0.23 ppb (3) N/A 9.3 μg/m3 (39) 39.0
 
Sept. 17, 2019, 8 p.m. N/A N/A N/A 3.0 ppb (3) N/A N/A 31.0 ppb (24) 0.24 ppb (3) N/A 9.5 μg/m3 (40) 40.0
 
Sept. 17, 2019, 7 p.m. N/A N/A N/A 5.0 ppb (5) N/A N/A 26.0 ppb (20) 0.25 ppb (3) N/A 10.6 μg/m3 (44) 44.0
 
Sept. 17, 2019, 6 p.m. N/A N/A N/A 6.0 ppb (6) N/A N/A 23.0 ppb (18) 0.27 ppb (3) N/A 11.6 μg/m3 (48) 48.0
 
Sept. 17, 2019, 5 p.m. N/A N/A N/A 10.0 ppb (9) N/A N/A 21.0 ppb (16) 0.29 ppb (3) N/A 13.2 μg/m3 (53) 53.0
 
Sept. 17, 2019, 4 p.m. N/A N/A N/A 9.0 ppb (8) N/A N/A 20.0 ppb (15) 0.31 ppb (3) N/A 4.8 μg/m3 (20) 20.0
 
Sept. 17, 2019, 3 p.m. N/A N/A N/A 8.0 ppb (7) N/A N/A 22.0 ppb (17) 0.3 ppb (3) N/A 2.2 μg/m3 (9) 17.0
 
Sept. 17, 2019, 2 p.m. N/A N/A N/A 18.0 ppb (17) N/A N/A 5.0 ppb (4) 0.38 ppb (4) N/A 2.9 μg/m3 (12) 17.0
 
Sept. 17, 2019, 1 p.m. N/A N/A N/A 13.0 ppb (12) N/A N/A 7.0 ppb (5) 0.3 ppb (3) N/A 2.7 μg/m3 (11) 12.0
 
Sept. 17, 2019, noon N/A N/A N/A 11.0 ppb (10) N/A N/A 10.0 ppb (8) 0.25 ppb (3) N/A 3.0 μg/m3 (12) 12.0
 
Sept. 17, 2019, 11 a.m. N/A N/A N/A 7.0 ppb (6) N/A N/A 15.0 ppb (12) 0.24 ppb (3) N/A 2.8 μg/m3 (12) 12.0
 
Sept. 17, 2019, 10 a.m. N/A N/A N/A 6.0 ppb (6) N/A N/A N/A N/A N/A 2.6 μg/m3 (11) 11.0
 
Sept. 17, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (16) 0.24 ppb (3) N/A 2.2 μg/m3 (9) 16.0
 
Sept. 17, 2019, 8 a.m. N/A N/A N/A 4.0 ppb (4) N/A N/A 24.0 ppb (18) 0.23 ppb (3) N/A 2.0 μg/m3 (8) 18.0
 
Sept. 17, 2019, 7 a.m. N/A N/A N/A 4.0 ppb (4) N/A N/A 25.0 ppb (19) 0.23 ppb (3) N/A 2.8 μg/m3 (12) 19.0
 
Sept. 17, 2019, 6 a.m. N/A N/A N/A 3.0 ppb (3) N/A N/A 27.0 ppb (21) 0.23 ppb (3) N/A 2.1 μg/m3 (9) 21.0
 
Sept. 17, 2019, 5 a.m. N/A N/A N/A 3.0 ppb (3) N/A N/A 28.0 ppb (22) 0.24 ppb (3) N/A 2.5 μg/m3 (10) 22.0
 
Sept. 17, 2019, 4 a.m. N/A N/A N/A 4.0 ppb (4) N/A N/A 29.0 ppb (22) 0.24 ppb (3) N/A 3.5 μg/m3 (15) 22.0
 
Sept. 17, 2019, 2 a.m. N/A N/A N/A 7.0 ppb (6) N/A N/A 33.0 ppb (25) 0.28 ppb (3) N/A 11.9 μg/m3 (50) 50.0
 
Sept. 17, 2019, 1 a.m. N/A N/A N/A 7.0 ppb (6) N/A N/A 34.0 ppb (26) 0.29 ppb (3) N/A 13.9 μg/m3 (54) 54.0
 
Sept. 17, 2019, midnight N/A N/A N/A 7.0 ppb (6) N/A N/A 35.0 ppb (27) 0.28 ppb (3) N/A 14.6 μg/m3 (56) 56.0
 
Sept. 16, 2019, 11 p.m. N/A N/A N/A 7.0 ppb (6) N/A N/A 36.0 ppb (28) 0.28 ppb (3) N/A 14.9 μg/m3 (56) 56.0
 
Sept. 16, 2019, 10 p.m. N/A N/A N/A 8.0 ppb (7) N/A N/A 32.0 ppb (25) 0.29 ppb (3) N/A 15.7 μg/m3 (58) 58.0
 
Sept. 16, 2019, 9 p.m. N/A N/A N/A 6.0 ppb (6) N/A N/A 32.0 ppb (25) 0.28 ppb (3) N/A 14.3 μg/m3 (55) 55.0
 
Sept. 16, 2019, 8 p.m. N/A N/A N/A 3.0 ppb (3) N/A N/A 31.0 ppb (24) 0.26 ppb (3) N/A 10.7 μg/m3 (45) 45.0
 
Sept. 16, 2019, 7 p.m. N/A N/A N/A 5.0 ppb (5) N/A N/A 26.0 ppb (20) 0.26 ppb (3) N/A 9.3 μg/m3 (39) 39.0
 
Sept. 16, 2019, 6 p.m. N/A N/A N/A 6.0 ppb (6) N/A N/A 22.0 ppb (17) 0.27 ppb (3) N/A 16.0 μg/m3 (59) 59.0
 
Sept. 16, 2019, 5 p.m. N/A N/A N/A 5.0 ppb (5) N/A N/A 23.0 ppb (18) 0.26 ppb (3) N/A 9.1 μg/m3 (38) 38.0
 
Sept. 16, 2019, 4 p.m. N/A N/A N/A 4.0 ppb (4) N/A N/A 22.0 ppb (17) 0.26 ppb (3) N/A 10.3 μg/m3 (43) 43.0
 
Sept. 16, 2019, 3 p.m. N/A N/A N/A 5.0 ppb (5) N/A N/A 20.0 ppb (15) 0.26 ppb (3) N/A 9.7 μg/m3 (40) 40.0
 
Sept. 16, 2019, 2 p.m. N/A N/A N/A 6.0 ppb (6) N/A N/A 15.0 ppb (12) 0.27 ppb (3) N/A 8.9 μg/m3 (37) 37.0
 
Sept. 16, 2019, 1 p.m. N/A N/A N/A 9.0 ppb (8) N/A N/A 11.0 ppb (8) 0.28 ppb (3) N/A 4.1 μg/m3 (17) 17.0
 
Sept. 16, 2019, noon N/A N/A N/A 13.0 ppb (12) N/A N/A 6.0 ppb (5) 0.24 ppb (3) N/A 2.6 μg/m3 (11) 12.0
 
Sept. 16, 2019, 11 a.m. N/A N/A N/A 10.0 ppb (9) N/A N/A 13.0 ppb (10) 0.22 ppb (2) N/A 3.8 μg/m3 (16) 16.0
 
Sept. 16, 2019, 10 a.m. N/A N/A N/A 6.0 ppb (6) N/A N/A N/A N/A N/A 3.1 μg/m3 (13) 13.0
 
Sept. 16, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (22) 0.2 ppb (2) N/A 8.7 μg/m3 (36) 36.0
 
Sept. 16, 2019, 8 a.m. N/A N/A N/A 3.0 ppb (3) N/A N/A 34.0 ppb (26) 0.2 ppb (2) N/A 11.7 μg/m3 (49) 49.0
 
Sept. 16, 2019, 7 a.m. N/A N/A N/A 3.0 ppb (3) N/A N/A 32.0 ppb (25) 0.21 ppb (2) N/A 9.9 μg/m3 (41) 41.0
 
Sept. 16, 2019, 5 a.m. N/A N/A N/A 6.0 ppb (6) N/A N/A 30.0 ppb (23) 0.21 ppb (2) N/A 4.4 μg/m3 (18) 23.0
 
Sept. 16, 2019, 4 a.m. N/A N/A N/A 3.0 ppb (3) N/A N/A 34.0 ppb (26) 0.21 ppb (2) N/A 3.1 μg/m3 (13) 26.0
 
Sept. 16, 2019, 3 a.m. N/A N/A N/A 3.0 ppb (3) N/A N/A 34.0 ppb (26) 0.21 ppb (2) N/A 4.3 μg/m3 (18) 26.0
 
Sept. 16, 2019, 1 a.m. N/A N/A N/A 3.0 ppb (3) N/A N/A 36.0 ppb (28) 0.19 ppb (2) N/A 4.9 μg/m3 (20) 28.0
 
Sept. 16, 2019, midnight N/A N/A N/A 3.0 ppb (3) N/A N/A 29.0 ppb (22) 0.19 ppb (2) N/A 3.6 μg/m3 (15) 22.0
 
Sept. 15, 2019, 11 p.m. N/A N/A N/A 3.0 ppb (3) N/A N/A 29.0 ppb (22) 0.2 ppb (2) N/A 3.3 μg/m3 (14) 22.0
 
Sept. 15, 2019, 10 p.m. N/A N/A N/A 2.0 ppb (2) N/A N/A 31.0 ppb (24) 0.19 ppb (2) N/A 2.8 μg/m3 (12) 24.0
 
Sept. 15, 2019, 9 p.m. N/A N/A N/A 4.0 ppb (4) N/A N/A 32.0 ppb (25) 0.2 ppb (2) N/A 3.9 μg/m3 (16) 25.0
 
Sept. 15, 2019, 8 p.m. N/A N/A N/A 3.0 ppb (3) N/A N/A 36.0 ppb (28) 0.21 ppb (2) N/A 4.2 μg/m3 (18) 28.0
 
Sept. 15, 2019, 7 p.m. N/A N/A N/A 2.0 ppb (2) N/A N/A 39.0 ppb (30) 0.21 ppb (2) N/A 3.6 μg/m3 (15) 30.0
 
Sept. 15, 2019, 6 p.m. N/A N/A N/A 2.0 ppb (2) N/A N/A 39.0 ppb (30) 0.21 ppb (2) N/A 2.8 μg/m3 (12) 30.0
 
Sept. 15, 2019, 5 p.m. N/A N/A N/A 5.0 ppb (5) N/A N/A 30.0 ppb (23) 0.24 ppb (3) N/A 2.7 μg/m3 (11) 23.0
 
Sept. 15, 2019, 4 p.m. N/A N/A N/A 6.0 ppb (6) N/A N/A 27.0 ppb (21) 0.24 ppb (3) N/A 2.0 μg/m3 (8) 21.0
 
Sept. 15, 2019, 3 p.m. N/A N/A N/A 8.0 ppb (7) N/A N/A 21.0 ppb (16) 0.23 ppb (3) N/A 2.0 μg/m3 (8) 16.0
 
Sept. 15, 2019, 2 p.m. N/A N/A N/A 8.0 ppb (7) N/A N/A 19.0 ppb (15) 0.21 ppb (2) N/A 1.7 μg/m3 (7) 15.0
 
Sept. 15, 2019, 1 p.m. N/A N/A N/A 4.0 ppb (4) N/A N/A 29.0 ppb (22) 0.2 ppb (2) N/A 0.7 μg/m3 (3) 22.0
 
Sept. 15, 2019, noon N/A N/A N/A 5.0 ppb (5) N/A N/A 29.0 ppb (22) 0.2 ppb (2) N/A 0.8 μg/m3 (3) 22.0
 
Sept. 15, 2019, 11 a.m. N/A N/A N/A 9.0 ppb (8) N/A N/A 20.0 ppb (15) 0.21 ppb (2) N/A 0.7 μg/m3 (3) 15.0
 
Sept. 15, 2019, 10 a.m. N/A N/A N/A 6.0 ppb (6) N/A N/A N/A N/A N/A 0.7 μg/m3 (3) 6.0
 
Sept. 15, 2019, 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 1.0 μg/m3 (4) 16.0
 
Sept. 15, 2019, 8 a.m. N/A N/A N/A 5.0 ppb (5) N/A N/A 30.0 ppb (23) 0.21 ppb (2) N/A 2.4 μg/m3 (10) 23.0