ID: 1295

AQSQID: 000090222

Site Name: Calgary Northwest

Added: April 21, 2020, 6:24 p.m.

Updated: Sept. 27, 2020, 10:40 p.m.

Location: Calgary (Varsity Acres), CC

Reporting: False, Located: True

Current AQI: None

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
Sept. 19, 2020, 9 a.m. N/A N/A N/A N/A N/A N/A 9.0 ppb (7) 0.48 ppb (5) N/A 45.3 μg/m3 (124) 124.0
 
Sept. 19, 2020, 8 a.m. N/A N/A N/A 13.0 ppb (12) N/A N/A 8.0 ppb (6) 0.45 ppb (5) N/A 41.7 μg/m3 (116) 116.0
 
Sept. 19, 2020, 7 a.m. N/A N/A N/A 20.0 ppb (19) N/A N/A 4.0 ppb (3) 0.5 ppb (6) N/A 40.0 μg/m3 (111) 111.0
 
Sept. 19, 2020, 6 a.m. N/A N/A N/A 26.0 ppb (24) N/A N/A 1.0 ppb (1) 0.85 ppb (9) N/A 43.3 μg/m3 (120) 120.0
 
Sept. 19, 2020, 5 a.m. N/A N/A N/A 26.0 ppb (24) N/A N/A 1.0 ppb (1) 0.96 ppb (11) N/A 45.4 μg/m3 (125) 125.0
 
Sept. 19, 2020, 3 a.m. N/A N/A N/A 27.0 ppb (25) N/A N/A 3.0 ppb (2) 0.79 ppb (9) N/A 40.7 μg/m3 (113) 113.0
 
Sept. 19, 2020, 2 a.m. N/A N/A N/A 16.0 ppb (15) N/A N/A 16.0 ppb (12) 0.56 ppb (6) N/A 35.5 μg/m3 (100) 100.0
 
Sept. 19, 2020, 1 a.m. N/A N/A N/A 10.0 ppb (9) N/A N/A 28.0 ppb (22) 0.46 ppb (5) N/A 32.2 μg/m3 (93) 93.0
 
Sept. 19, 2020, midnight N/A N/A N/A 8.0 ppb (7) N/A N/A 32.0 ppb (25) 0.44 ppb (5) N/A 32.3 μg/m3 (93) 93.0
 
Sept. 18, 2020, 11 p.m. N/A N/A N/A 9.0 ppb (8) N/A N/A 32.0 ppb (25) 0.45 ppb (5) N/A 32.7 μg/m3 (94) 94.0
 
Sept. 18, 2020, 10 p.m. N/A N/A N/A 14.0 ppb (13) N/A N/A 24.0 ppb (18) 0.48 ppb (5) N/A 35.3 μg/m3 (100) 100.0
 
Sept. 18, 2020, 9 p.m. N/A N/A N/A 32.0 ppb (30) N/A N/A 11.0 ppb (8) 0.68 ppb (8) N/A 45.9 μg/m3 (126) 126.0
 
Sept. 18, 2020, 8 p.m. N/A N/A N/A 27.0 ppb (25) N/A N/A 10.0 ppb (8) 0.69 ppb (8) N/A 47.4 μg/m3 (130) 130.0
 
Sept. 18, 2020, 7 p.m. N/A N/A N/A 19.0 ppb (18) N/A N/A 10.0 ppb (8) 0.63 ppb (7) N/A 44.9 μg/m3 (124) 124.0
 
Sept. 18, 2020, 6 p.m. N/A N/A N/A 13.0 ppb (12) N/A N/A 10.0 ppb (8) 0.54 ppb (6) N/A 48.4 μg/m3 (132) 132.0
 
Sept. 18, 2020, 5 p.m. N/A N/A N/A 13.0 ppb (12) N/A N/A 8.0 ppb (6) 0.51 ppb (6) N/A 47.5 μg/m3 (130) 130.0
 
Sept. 18, 2020, 4 p.m. N/A N/A N/A 13.0 ppb (12) N/A N/A 7.0 ppb (5) 0.5 ppb (6) N/A 45.6 μg/m3 (125) 125.0
 
Sept. 18, 2020, 3 p.m. N/A N/A N/A 14.0 ppb (13) N/A N/A 4.0 ppb (3) 0.49 ppb (5) N/A 42.6 μg/m3 (118) 118.0
 
Sept. 18, 2020, 1 p.m. N/A N/A N/A 14.0 ppb (13) N/A N/A 1.0 ppb (1) 0.39 ppb (4) N/A 31.2 μg/m3 (91) 91.0
 
Sept. 18, 2020, noon N/A N/A N/A 12.0 ppb (11) N/A N/A 4.0 ppb (3) 0.37 ppb (4) N/A 30.2 μg/m3 (89) 89.0
 
Sept. 18, 2020, 11 a.m. N/A N/A N/A 11.0 ppb (10) N/A N/A 7.0 ppb (5) 0.35 ppb (4) N/A 29.9 μg/m3 (88) 88.0
 
Sept. 18, 2020, 10 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 30.4 μg/m3 (89) 89.0
 
Sept. 18, 2020, 9 a.m. N/A N/A N/A N/A N/A N/A 10.0 ppb (8) 0.36 ppb (4) N/A 29.1 μg/m3 (86) 86.0
 
Sept. 18, 2020, 8 a.m. N/A N/A N/A 15.0 ppb (14) N/A N/A 8.0 ppb (6) 0.41 ppb (5) N/A 28.5 μg/m3 (85) 85.0
 
Sept. 18, 2020, 7 a.m. N/A N/A N/A 10.0 ppb (9) N/A N/A 15.0 ppb (12) 0.38 ppb (4) N/A 28.2 μg/m3 (84) 84.0
 
Sept. 18, 2020, 6 a.m. N/A N/A N/A 10.0 ppb (9) N/A N/A 23.0 ppb (18) 0.38 ppb (4) N/A 28.2 μg/m3 (84) 84.0
 
Sept. 18, 2020, 5 a.m. N/A N/A N/A 10.0 ppb (9) N/A N/A 25.0 ppb (19) 0.39 ppb (4) N/A 28.2 μg/m3 (84) 84.0
 
Sept. 18, 2020, 4 a.m. N/A N/A N/A 10.0 ppb (9) N/A N/A 27.0 ppb (21) 0.4 ppb (4) N/A 27.1 μg/m3 (82) 82.0
 
Sept. 18, 2020, 3 a.m. N/A N/A N/A 9.0 ppb (8) N/A N/A 30.0 ppb (23) 0.41 ppb (5) N/A 26.5 μg/m3 (81) 81.0
 
Sept. 18, 2020, 2 a.m. N/A N/A N/A 8.0 ppb (7) N/A N/A 32.0 ppb (25) 0.4 ppb (4) N/A 25.2 μg/m3 (78) 78.0
 
Sept. 18, 2020, 1 a.m. N/A N/A N/A 6.0 ppb (6) N/A N/A 35.0 ppb (27) 0.37 ppb (4) N/A 22.8 μg/m3 (73) 73.0
 
Sept. 18, 2020, midnight N/A N/A N/A 4.0 ppb (4) N/A N/A 38.0 ppb (29) 0.35 ppb (4) N/A 21.7 μg/m3 (71) 71.0
 
Sept. 17, 2020, 11 p.m. N/A N/A N/A 3.0 ppb (3) N/A N/A 39.0 ppb (30) 0.35 ppb (4) N/A 21.7 μg/m3 (71) 71.0
 
Sept. 17, 2020, 10 p.m. N/A N/A N/A 4.0 ppb (4) N/A N/A 39.0 ppb (30) 0.34 ppb (4) N/A 21.7 μg/m3 (71) 71.0
 
Sept. 17, 2020, 9 p.m. N/A N/A N/A 3.0 ppb (3) N/A N/A 40.0 ppb (31) 0.35 ppb (4) N/A 23.6 μg/m3 (75) 75.0
 
Sept. 17, 2020, 8 p.m. N/A N/A N/A 3.0 ppb (3) N/A N/A 40.0 ppb (31) 0.34 ppb (4) N/A 22.6 μg/m3 (73) 73.0
 
Sept. 17, 2020, 7 p.m. N/A N/A N/A 4.0 ppb (4) N/A N/A 36.0 ppb (28) 0.35 ppb (4) N/A 22.7 μg/m3 (73) 73.0
 
Sept. 17, 2020, 6 p.m. N/A N/A N/A 7.0 ppb (6) N/A N/A 29.0 ppb (22) 0.37 ppb (4) N/A 22.7 μg/m3 (73) 73.0
 
Sept. 17, 2020, 5 p.m. N/A N/A N/A 13.0 ppb (12) N/A N/A 17.0 ppb (13) 0.42 ppb (5) N/A 24.1 μg/m3 (76) 76.0
 
Sept. 17, 2020, 4 p.m. N/A N/A N/A 10.0 ppb (9) N/A N/A 9.0 ppb (7) 0.42 ppb (5) N/A 26.6 μg/m3 (81) 81.0
 
Sept. 17, 2020, 3 p.m. N/A N/A N/A 8.0 ppb (7) N/A N/A 7.0 ppb (5) 0.4 ppb (4) N/A 26.2 μg/m3 (80) 80.0
 
Sept. 17, 2020, 2 p.m. N/A N/A N/A 9.0 ppb (8) N/A N/A 4.0 ppb (3) 0.4 ppb (4) N/A 25.7 μg/m3 (79) 79.0
 
Sept. 17, 2020, 1 p.m. N/A N/A N/A 11.0 ppb (10) N/A N/A 2.0 ppb (2) 0.39 ppb (4) N/A 25.3 μg/m3 (78) 78.0
 
Sept. 17, 2020, noon N/A N/A N/A 10.0 ppb (9) N/A N/A 3.0 ppb (2) 0.37 ppb (4) N/A 25.8 μg/m3 (79) 79.0
 
Sept. 17, 2020, 11 a.m. N/A N/A N/A 10.0 ppb (9) N/A N/A 5.0 ppb (4) 0.37 ppb (4) N/A 26.5 μg/m3 (81) 81.0
 
Sept. 17, 2020, 10 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 26.9 μg/m3 (82) 82.0
 
Sept. 17, 2020, 9 a.m. N/A N/A N/A N/A N/A N/A 7.0 ppb (5) 0.39 ppb (4) N/A 27.2 μg/m3 (82) 82.0
 
Sept. 17, 2020, 8 a.m. N/A N/A N/A 12.0 ppb (11) N/A N/A 7.0 ppb (5) 0.4 ppb (4) N/A 27.4 μg/m3 (83) 83.0
 
Sept. 17, 2020, 7 a.m. N/A N/A N/A 14.0 ppb (13) N/A N/A 8.0 ppb (6) 0.39 ppb (4) N/A 26.2 μg/m3 (80) 80.0
 
Sept. 17, 2020, 6 a.m. N/A N/A N/A 16.0 ppb (15) N/A N/A 8.0 ppb (6) 0.46 ppb (5) N/A 23.2 μg/m3 (74) 74.0
 
Sept. 17, 2020, 5 a.m. N/A N/A N/A 15.0 ppb (14) N/A N/A 12.0 ppb (9) 0.44 ppb (5) N/A 23.3 μg/m3 (74) 74.0
 
Sept. 17, 2020, 4 a.m. N/A N/A N/A 17.0 ppb (16) N/A N/A 15.0 ppb (12) 0.4 ppb (4) N/A 23.0 μg/m3 (73) 73.0
 
Sept. 17, 2020, 3 a.m. N/A N/A N/A 15.0 ppb (14) N/A N/A 20.0 ppb (15) 0.42 ppb (5) N/A 23.2 μg/m3 (74) 74.0
 
Sept. 17, 2020, 2 a.m. N/A N/A N/A 12.0 ppb (11) N/A N/A 25.0 ppb (19) 0.41 ppb (5) N/A 23.3 μg/m3 (74) 74.0
 
Sept. 17, 2020, 1 a.m. N/A N/A N/A 8.0 ppb (7) N/A N/A 30.0 ppb (23) 0.39 ppb (4) N/A 23.7 μg/m3 (75) 75.0
 
Sept. 17, 2020, midnight N/A N/A N/A 7.0 ppb (6) N/A N/A 33.0 ppb (25) 0.36 ppb (4) N/A 22.9 μg/m3 (73) 73.0
 
Sept. 16, 2020, 11 p.m. N/A N/A N/A 10.0 ppb (9) N/A N/A 32.0 ppb (25) 0.37 ppb (4) N/A 24.4 μg/m3 (76) 76.0
 
Sept. 16, 2020, 10 p.m. N/A N/A N/A 10.0 ppb (9) N/A N/A 33.0 ppb (25) 0.38 ppb (4) N/A 24.9 μg/m3 (77) 77.0
 
Sept. 16, 2020, 9 p.m. N/A N/A N/A 10.0 ppb (9) N/A N/A 29.0 ppb (22) 0.39 ppb (4) N/A 25.1 μg/m3 (78) 78.0
 
Sept. 16, 2020, 8 p.m. N/A N/A N/A 8.0 ppb (7) N/A N/A 26.0 ppb (20) 0.39 ppb (4) N/A 22.9 μg/m3 (73) 73.0
 
Sept. 16, 2020, 7 p.m. N/A N/A N/A 7.0 ppb (6) N/A N/A 21.0 ppb (16) 0.37 ppb (4) N/A 22.3 μg/m3 (72) 72.0
 
Sept. 16, 2020, 6 p.m. N/A N/A N/A 6.0 ppb (6) N/A N/A 19.0 ppb (15) 0.34 ppb (4) N/A 21.3 μg/m3 (70) 70.0
 
Sept. 16, 2020, 5 p.m. N/A N/A N/A 6.0 ppb (6) N/A N/A 16.0 ppb (12) 0.33 ppb (4) N/A 19.3 μg/m3 (66) 66.0
 
Sept. 16, 2020, 4 p.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 19.6 μg/m3 (66) 66.0
 
Sept. 16, 2020, 2 p.m. N/A N/A N/A 8.0 ppb (7) N/A N/A 11.0 ppb (8) 0.32 ppb (4) N/A 18.9 μg/m3 (65) 65.0
 
Sept. 16, 2020, 8 a.m. N/A N/A N/A 7.0 ppb (6) N/A N/A 10.0 ppb (8) 0.29 ppb (3) N/A 14.0 μg/m3 (54) 54.0
 
Sept. 16, 2020, 7 a.m. N/A N/A N/A 8.0 ppb (7) N/A N/A 11.0 ppb (8) 0.32 ppb (4) N/A 18.2 μg/m3 (63) 63.0
 
Sept. 16, 2020, 6 a.m. N/A N/A N/A 6.0 ppb (6) N/A N/A 11.0 ppb (8) 0.31 ppb (3) N/A 17.0 μg/m3 (61) 61.0
 
Sept. 16, 2020, 5 a.m. N/A N/A N/A 6.0 ppb (6) N/A N/A 12.0 ppb (9) 0.31 ppb (3) N/A 18.3 μg/m3 (63) 63.0
 
Sept. 16, 2020, 4 a.m. N/A N/A N/A 5.0 ppb (5) N/A N/A 13.0 ppb (10) 0.31 ppb (3) N/A 19.5 μg/m3 (66) 66.0
 
Sept. 16, 2020, 3 a.m. N/A N/A N/A 5.0 ppb (5) N/A N/A 13.0 ppb (10) 0.33 ppb (4) N/A 19.9 μg/m3 (67) 67.0
 
Sept. 16, 2020, 2 a.m. N/A N/A N/A 5.0 ppb (5) N/A N/A 14.0 ppb (11) 0.33 ppb (4) N/A 21.5 μg/m3 (70) 70.0
 
Sept. 16, 2020, 1 a.m. N/A N/A N/A 4.0 ppb (4) N/A N/A 16.0 ppb (12) 0.32 ppb (4) N/A 22.5 μg/m3 (72) 72.0
 
Sept. 16, 2020, midnight N/A N/A N/A 4.0 ppb (4) N/A N/A 19.0 ppb (15) 0.33 ppb (4) N/A 24.7 μg/m3 (77) 77.0
 
Sept. 15, 2020, 11 p.m. N/A N/A N/A 4.0 ppb (4) N/A N/A 18.0 ppb (14) 0.31 ppb (3) N/A 22.8 μg/m3 (73) 73.0
 
Sept. 15, 2020, 10 p.m. N/A N/A N/A 4.0 ppb (4) N/A N/A 12.0 ppb (9) 0.25 ppb (3) N/A 12.0 μg/m3 (50) 50.0
 
Sept. 15, 2020, 9 p.m. N/A N/A N/A 4.0 ppb (4) N/A N/A 14.0 ppb (11) 0.25 ppb (3) N/A 14.4 μg/m3 (55) 55.0
 
Sept. 15, 2020, 8 p.m. N/A N/A N/A 3.0 ppb (3) N/A N/A 14.0 ppb (11) 0.24 ppb (3) N/A 14.5 μg/m3 (55) 55.0
 
Sept. 15, 2020, 7 p.m. N/A N/A N/A 4.0 ppb (4) N/A N/A 14.0 ppb (11) 0.25 ppb (3) N/A 17.4 μg/m3 (61) 61.0
 
Sept. 15, 2020, 6 p.m. N/A N/A N/A 5.0 ppb (5) N/A N/A 12.0 ppb (9) 0.26 ppb (3) N/A 20.9 μg/m3 (69) 69.0
 
Sept. 15, 2020, 5 p.m. N/A N/A N/A 5.0 ppb (5) N/A N/A 12.0 ppb (9) 0.25 ppb (3) N/A 20.5 μg/m3 (68) 68.0
 
Sept. 15, 2020, 4 p.m. N/A N/A N/A 8.0 ppb (7) N/A N/A 8.0 ppb (6) 0.24 ppb (3) N/A 18.4 μg/m3 (64) 64.0
 
Sept. 15, 2020, 3 p.m. N/A N/A N/A 10.0 ppb (9) N/A N/A 6.0 ppb (5) 0.25 ppb (3) N/A 14.4 μg/m3 (55) 55.0
 
Sept. 15, 2020, 2 p.m. N/A N/A N/A 9.0 ppb (8) N/A N/A 6.0 ppb (5) 0.23 ppb (3) N/A 8.4 μg/m3 (35) 35.0
 
Sept. 15, 2020, 1 p.m. N/A N/A N/A 8.0 ppb (7) N/A N/A 7.0 ppb (5) 0.21 ppb (2) N/A 7.5 μg/m3 (31) 31.0
 
Sept. 15, 2020, noon N/A N/A N/A 6.0 ppb (6) N/A N/A 9.0 ppb (7) 0.19 ppb (2) N/A 8.4 μg/m3 (35) 35.0
 
Sept. 15, 2020, 11 a.m. N/A N/A N/A 5.0 ppb (5) N/A N/A 10.0 ppb (8) 0.18 ppb (2) N/A 8.5 μg/m3 (35) 35.0
 
Sept. 15, 2020, 10 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 8.5 μg/m3 (35) 35.0
 
Sept. 15, 2020, 9 a.m. N/A N/A N/A N/A N/A N/A 12.0 ppb (9) 0.18 ppb (2) N/A 8.0 μg/m3 (33) 33.0
 
Sept. 15, 2020, 8 a.m. N/A N/A N/A 3.0 ppb (3) N/A N/A 13.0 ppb (10) 0.18 ppb (2) N/A 7.9 μg/m3 (33) 33.0
 
Sept. 15, 2020, 7 a.m. N/A N/A N/A 3.0 ppb (3) N/A N/A 14.0 ppb (11) 0.18 ppb (2) N/A 7.3 μg/m3 (30) 30.0
 
Sept. 15, 2020, 6 a.m. N/A N/A N/A 3.0 ppb (3) N/A N/A 15.0 ppb (12) 0.18 ppb (2) N/A 5.5 μg/m3 (23) 23.0
 
Sept. 15, 2020, 5 a.m. N/A N/A N/A 6.0 ppb (6) N/A N/A 12.0 ppb (9) 0.2 ppb (2) N/A 5.6 μg/m3 (23) 23.0
 
Sept. 15, 2020, 4 a.m. N/A N/A N/A 9.0 ppb (8) N/A N/A 9.0 ppb (7) 0.22 ppb (2) N/A 7.1 μg/m3 (30) 30.0
 
Sept. 15, 2020, 3 a.m. N/A N/A N/A 9.0 ppb (8) N/A N/A 10.0 ppb (8) 0.21 ppb (2) N/A 8.9 μg/m3 (37) 37.0
 
Sept. 15, 2020, 2 a.m. N/A N/A N/A 5.0 ppb (5) N/A N/A 13.0 ppb (10) 0.19 ppb (2) N/A 8.2 μg/m3 (34) 34.0
 
Sept. 15, 2020, 1 a.m. N/A N/A N/A 3.0 ppb (3) N/A N/A 16.0 ppb (12) 0.19 ppb (2) N/A 7.5 μg/m3 (31) 31.0
 
Sept. 15, 2020, midnight N/A N/A N/A 4.0 ppb (4) N/A N/A 16.0 ppb (12) 0.19 ppb (2) N/A 7.0 μg/m3 (29) 29.0
 
Sept. 14, 2020, 11 p.m. N/A N/A N/A 4.0 ppb (4) N/A N/A 16.0 ppb (12) 0.19 ppb (2) N/A 6.8 μg/m3 (28) 28.0
 
Sept. 14, 2020, 10 p.m. N/A N/A N/A 4.0 ppb (4) N/A N/A 13.0 ppb (10) 0.2 ppb (2) N/A 7.6 μg/m3 (32) 32.0
 
Sept. 14, 2020, 9 p.m. N/A N/A N/A 5.0 ppb (5) N/A N/A 11.0 ppb (8) 0.21 ppb (2) N/A 11.9 μg/m3 (50) 50.0
 
Sept. 14, 2020, 8 p.m. N/A N/A N/A 5.0 ppb (5) N/A N/A 9.0 ppb (7) 0.21 ppb (2) N/A 12.5 μg/m3 (51) 51.0
 
Sept. 14, 2020, 7 p.m. N/A N/A N/A 4.0 ppb (4) N/A N/A 10.0 ppb (8) 0.2 ppb (2) N/A 10.7 μg/m3 (45) 45.0
 
Sept. 14, 2020, 6 p.m. N/A N/A N/A 5.0 ppb (5) N/A N/A 9.0 ppb (7) 0.2 ppb (2) N/A 9.2 μg/m3 (38) 38.0
 
Sept. 14, 2020, 5 p.m. N/A N/A N/A 5.0 ppb (5) N/A N/A 11.0 ppb (8) 0.2 ppb (2) N/A 8.5 μg/m3 (35) 35.0
 
Sept. 14, 2020, 4 p.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 7.9 μg/m3 (33) 33.0
 
Sept. 14, 2020, 5 a.m. N/A N/A N/A 5.0 ppb (5) N/A N/A 8.0 ppb (6) 0.2 ppb (2) N/A 6.9 μg/m3 (29) 29.0
 
Sept. 14, 2020, 4 a.m. N/A N/A N/A 5.0 ppb (5) N/A N/A 8.0 ppb (6) 0.2 ppb (2) N/A 8.0 μg/m3 (33) 33.0
 
Sept. 14, 2020, 3 a.m. N/A N/A N/A 4.0 ppb (4) N/A N/A 9.0 ppb (7) 0.2 ppb (2) N/A 8.2 μg/m3 (34) 34.0
 
Sept. 14, 2020, 2 a.m. N/A N/A N/A 5.0 ppb (5) N/A N/A 10.0 ppb (8) 0.21 ppb (2) N/A 8.3 μg/m3 (35) 35.0
 
Sept. 14, 2020, 1 a.m. N/A N/A N/A 4.0 ppb (4) N/A N/A 13.0 ppb (10) 0.2 ppb (2) N/A 7.9 μg/m3 (33) 33.0
 
Sept. 14, 2020, midnight N/A N/A N/A 4.0 ppb (4) N/A N/A 16.0 ppb (12) 0.19 ppb (2) N/A 6.7 μg/m3 (28) 28.0
 
Sept. 13, 2020, 11 p.m. N/A N/A N/A 4.0 ppb (4) N/A N/A 17.0 ppb (13) 0.19 ppb (2) N/A 5.3 μg/m3 (22) 22.0
 
Sept. 13, 2020, 10 p.m. N/A N/A N/A 4.0 ppb (4) N/A N/A 18.0 ppb (14) 0.19 ppb (2) N/A 4.4 μg/m3 (18) 18.0
 
Sept. 13, 2020, 9 p.m. N/A N/A N/A 5.0 ppb (5) N/A N/A 23.0 ppb (18) 0.2 ppb (2) N/A 7.4 μg/m3 (31) 31.0
 
Sept. 13, 2020, 8 p.m. N/A N/A N/A 5.0 ppb (5) N/A N/A 22.0 ppb (17) 0.2 ppb (2) N/A 8.0 μg/m3 (33) 33.0
 
Sept. 13, 2020, 7 p.m. N/A N/A N/A 6.0 ppb (6) N/A N/A 20.0 ppb (15) 0.2 ppb (2) N/A 5.6 μg/m3 (23) 23.0
 
Sept. 13, 2020, 6 p.m. N/A N/A N/A 4.0 ppb (4) N/A N/A 21.0 ppb (16) 0.19 ppb (2) N/A 4.4 μg/m3 (18) 18.0
 
Sept. 13, 2020, 5 p.m. N/A N/A N/A 3.0 ppb (3) N/A N/A 20.0 ppb (15) 0.18 ppb (2) N/A 3.1 μg/m3 (13) 15.0
 
Sept. 13, 2020, 4 p.m. N/A N/A N/A 4.0 ppb (4) N/A N/A 20.0 ppb (15) 0.17 ppb (2) N/A 2.0 μg/m3 (8) 15.0
 
Sept. 13, 2020, 3 p.m. N/A N/A N/A 3.0 ppb (3) N/A N/A 21.0 ppb (16) 0.16 ppb (2) N/A 1.8 μg/m3 (8) 16.0
 
Sept. 13, 2020, 2 p.m. N/A N/A N/A 3.0 ppb (3) N/A N/A 21.0 ppb (16) 0.16 ppb (2) N/A 2.3 μg/m3 (10) 16.0
 
Sept. 13, 2020, 1 p.m. N/A N/A N/A 3.0 ppb (3) N/A N/A 20.0 ppb (15) 0.16 ppb (2) N/A 2.5 μg/m3 (10) 15.0
 
Sept. 13, 2020, noon N/A N/A N/A 3.0 ppb (3) N/A N/A 21.0 ppb (16) 0.16 ppb (2) N/A 2.5 μg/m3 (10) 16.0
 
Sept. 13, 2020, 11 a.m. N/A N/A N/A 3.0 ppb (3) N/A N/A 22.0 ppb (17) 0.16 ppb (2) N/A 2.9 μg/m3 (12) 17.0
 
Sept. 13, 2020, 10 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 3.1 μg/m3 (13) 13.0
 
Sept. 13, 2020, 9 a.m. N/A N/A N/A 2.0 ppb (2) N/A N/A 23.0 ppb (18) 0.16 ppb (2) N/A 3.2 μg/m3 (13) 18.0
 
Sept. 13, 2020, 8 a.m. N/A N/A N/A 2.0 ppb (2) N/A N/A 24.0 ppb (18) 0.16 ppb (2) N/A 3.2 μg/m3 (13) 18.0
 
Sept. 13, 2020, 7 a.m. N/A N/A N/A 4.0 ppb (4) N/A N/A 22.0 ppb (17) 0.16 ppb (2) N/A 3.4 μg/m3 (14) 17.0
 
Sept. 13, 2020, 6 a.m. N/A N/A N/A 4.0 ppb (4) N/A N/A 21.0 ppb (16) 0.17 ppb (2) N/A 3.5 μg/m3 (15) 16.0
 
Sept. 13, 2020, 5 a.m. N/A N/A N/A 6.0 ppb (6) N/A N/A 19.0 ppb (15) 0.18 ppb (2) N/A 4.0 μg/m3 (17) 17.0
 
Sept. 13, 2020, 4 a.m. N/A N/A N/A 5.0 ppb (5) N/A N/A 21.0 ppb (16) 0.18 ppb (2) N/A 4.3 μg/m3 (18) 18.0
 
Sept. 13, 2020, 3 a.m. N/A N/A N/A 4.0 ppb (4) N/A N/A 22.0 ppb (17) 0.18 ppb (2) N/A 4.3 μg/m3 (18) 18.0
 
Sept. 13, 2020, 2 a.m. N/A N/A N/A 4.0 ppb (4) N/A N/A 21.0 ppb (16) 0.17 ppb (2) N/A 4.3 μg/m3 (18) 18.0
 
Sept. 13, 2020, 1 a.m. N/A N/A N/A 3.0 ppb (3) N/A N/A 22.0 ppb (17) 0.17 ppb (2) N/A 4.5 μg/m3 (19) 19.0
 
Sept. 12, 2020, 11 p.m. N/A N/A N/A 2.0 ppb (2) N/A N/A 24.0 ppb (18) 0.17 ppb (2) N/A 5.0 μg/m3 (21) 21.0
 
Sept. 12, 2020, 10 p.m. N/A N/A N/A 2.0 ppb (2) N/A N/A 27.0 ppb (21) 0.17 ppb (2) N/A 5.2 μg/m3 (22) 22.0
 
Sept. 12, 2020, 9 p.m. N/A N/A N/A 2.0 ppb (2) N/A N/A 27.0 ppb (21) 0.17 ppb (2) N/A 5.0 μg/m3 (21) 21.0
 
Sept. 12, 2020, 8 p.m. N/A N/A N/A 3.0 ppb (3) N/A N/A 27.0 ppb (21) 0.17 ppb (2) N/A 6.5 μg/m3 (27) 27.0
 
Sept. 12, 2020, 7 p.m. N/A N/A N/A 3.0 ppb (3) N/A N/A 27.0 ppb (21) 0.18 ppb (2) N/A 7.8 μg/m3 (32) 32.0
 
Sept. 12, 2020, 6 p.m. N/A N/A N/A 3.0 ppb (3) N/A N/A 25.0 ppb (19) 0.18 ppb (2) N/A 5.8 μg/m3 (24) 24.0
 
Sept. 12, 2020, 5 p.m. N/A N/A N/A 2.0 ppb (2) N/A N/A 24.0 ppb (18) 0.17 ppb (2) N/A 4.3 μg/m3 (18) 18.0
 
Sept. 12, 2020, 4 p.m. N/A N/A N/A 3.0 ppb (3) N/A N/A 21.0 ppb (16) 0.17 ppb (2) N/A 3.7 μg/m3 (15) 16.0
 
Sept. 12, 2020, 3 p.m. N/A N/A N/A 4.0 ppb (4) N/A N/A 17.0 ppb (13) 0.18 ppb (2) N/A 4.4 μg/m3 (18) 18.0
 
Sept. 12, 2020, noon N/A N/A N/A 6.0 ppb (6) N/A N/A 15.0 ppb (12) 0.17 ppb (2) N/A 3.9 μg/m3 (16) 16.0
 
Sept. 12, 2020, 11 a.m. N/A N/A N/A 9.0 ppb (8) N/A N/A 15.0 ppb (12) 0.17 ppb (2) N/A 4.1 μg/m3 (17) 17.0
 
Sept. 12, 2020, 10 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 3.9 μg/m3 (16) 16.0
 
Sept. 12, 2020, 9 a.m. N/A N/A N/A 4.0 ppb (4) N/A N/A 18.0 ppb (14) 0.16 ppb (2) N/A 4.3 μg/m3 (18) 18.0
 
Sept. 12, 2020, 8 a.m. N/A N/A N/A 3.0 ppb (3) N/A N/A 18.0 ppb (14) 0.17 ppb (2) N/A 4.9 μg/m3 (20) 20.0
 
Sept. 12, 2020, 7 a.m. N/A N/A N/A 4.0 ppb (4) N/A N/A 15.0 ppb (12) 0.18 ppb (2) N/A 5.4 μg/m3 (23) 23.0
 
Sept. 12, 2020, 6 a.m. N/A N/A N/A 3.0 ppb (3) N/A N/A 17.0 ppb (13) 0.17 ppb (2) N/A 5.1 μg/m3 (21) 21.0
 
Sept. 12, 2020, 5 a.m. N/A N/A N/A 3.0 ppb (3) N/A N/A 18.0 ppb (14) 0.17 ppb (2) N/A 5.8 μg/m3 (24) 24.0
 
Sept. 12, 2020, 4 a.m. N/A N/A N/A 4.0 ppb (4) N/A N/A 21.0 ppb (16) 0.17 ppb (2) N/A 7.0 μg/m3 (29) 29.0
 
Sept. 12, 2020, 3 a.m. N/A N/A N/A 4.0 ppb (4) N/A N/A 27.0 ppb (21) 0.17 ppb (2) N/A 7.8 μg/m3 (32) 32.0
 
Sept. 12, 2020, 2 a.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 8.3 μg/m3 (35) 35.0
 
Sept. 12, 2020, 1 a.m. N/A N/A N/A 3.0 ppb (3) N/A N/A 34.0 ppb (26) 0.16 ppb (2) N/A 7.3 μg/m3 (30) 30.0
 
Sept. 12, 2020, midnight N/A N/A N/A 3.0 ppb (3) N/A N/A 32.0 ppb (25) 0.14 ppb (2) N/A 3.1 μg/m3 (13) 25.0
 
Sept. 11, 2020, 11 p.m. N/A N/A N/A 3.0 ppb (3) N/A N/A 32.0 ppb (25) 0.13 ppb (1) N/A 2.8 μg/m3 (12) 25.0
 
Sept. 11, 2020, 10 p.m. N/A N/A N/A 3.0 ppb (3) N/A N/A 34.0 ppb (26) 0.13 ppb (1) N/A 3.5 μg/m3 (15) 26.0
 
Sept. 11, 2020, 9 p.m. N/A N/A N/A 3.0 ppb (3) N/A N/A 39.0 ppb (30) 0.15 ppb (2) N/A 3.2 μg/m3 (13) 30.0
 
Sept. 11, 2020, 8 p.m. N/A N/A N/A 3.0 ppb (3) N/A N/A 40.0 ppb (31) 0.14 ppb (2) N/A 3.2 μg/m3 (13) 31.0
 
Sept. 11, 2020, 7 p.m. N/A N/A N/A 4.0 ppb (4) N/A N/A 35.0 ppb (27) 0.14 ppb (2) N/A 3.5 μg/m3 (15) 27.0
 
Sept. 11, 2020, 6 p.m. N/A N/A N/A 4.0 ppb (4) N/A N/A 32.0 ppb (25) 0.15 ppb (2) N/A 4.2 μg/m3 (18) 25.0
 
Sept. 11, 2020, 5 p.m. N/A N/A N/A 7.0 ppb (6) N/A N/A 23.0 ppb (18) 0.16 ppb (2) N/A 3.9 μg/m3 (16) 18.0
 
Sept. 11, 2020, 4 p.m. N/A N/A N/A 7.0 ppb (6) N/A N/A 19.0 ppb (15) 0.16 ppb (2) N/A 3.7 μg/m3 (15) 15.0
 
Sept. 11, 2020, 3 p.m. N/A N/A N/A 8.0 ppb (7) N/A N/A 15.0 ppb (12) 0.16 ppb (2) N/A 3.7 μg/m3 (15) 15.0
 
Sept. 11, 2020, 2 p.m. N/A N/A N/A 10.0 ppb (9) N/A N/A 11.0 ppb (8) 0.17 ppb (2) N/A 4.4 μg/m3 (18) 18.0
 
Sept. 11, 2020, 1 p.m. N/A N/A N/A 7.0 ppb (6) N/A N/A 12.0 ppb (9) 0.15 ppb (2) N/A 4.4 μg/m3 (18) 18.0