AQSQID: 000090228

Site Name: Calgary Central2

Location: Calgary (5 St SW), CC

Reporting: True, Located: True

Current AQI: 19.0

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
May 20, 2019, 2 p.m. N/A N/A N/A 5.0 ppb (5) N/A N/A 25.0 ppb (19) 0.12 ppb (1) N/A 4.2 μg/m3 (18) 19.0
 
May 20, 2019, 1 p.m. N/A N/A N/A 18.0 ppb (17) N/A N/A 9.0 ppb (7) 0.29 ppb (3) N/A 9.9 μg/m3 (41) 41.0
 
May 20, 2019, noon N/A N/A N/A 23.0 ppb (21) N/A N/A 2.0 ppb (2) 0.36 ppb (4) N/A 11.4 μg/m3 (48) 48.0
 
May 20, 2019, 11 a.m. N/A N/A N/A 25.0 ppb (23) N/A N/A 1.0 ppb (1) 0.33 ppb (4) N/A 11.9 μg/m3 (50) 50.0
 
May 20, 2019, 10 a.m. N/A N/A N/A 22.0 ppb (20) N/A N/A 1.0 ppb (1) 0.25 ppb (3) N/A 9.1 μg/m3 (38) 38.0
 
May 20, 2019, 9 a.m. N/A N/A N/A 21.0 ppb (19) N/A N/A 5.0 ppb (4) 0.21 ppb (2) N/A 7.8 μg/m3 (32) 32.0
 
May 20, 2019, 8 a.m. N/A N/A N/A 25.0 ppb (23) N/A N/A 4.0 ppb (3) 0.25 ppb (3) N/A 9.1 μg/m3 (38) 38.0
 
May 20, 2019, 7 a.m. N/A N/A N/A 23.0 ppb (21) N/A N/A 9.0 ppb (7) 0.31 ppb (3) N/A 11.9 μg/m3 (50) 50.0
 
May 20, 2019, 6 a.m. N/A N/A N/A 13.0 ppb (12) N/A N/A 20.0 ppb (15) 0.23 ppb (3) N/A 11.8 μg/m3 (49) 49.0
 
May 20, 2019, 5 a.m. N/A N/A N/A 14.0 ppb (13) N/A N/A 23.0 ppb (18) 0.19 ppb (2) N/A 9.6 μg/m3 (40) 40.0
 
May 20, 2019, 4 a.m. N/A N/A N/A 33.0 ppb (31) N/A N/A 9.0 ppb (7) 0.19 ppb (2) N/A 10.9 μg/m3 (45) 45.0
 
May 20, 2019, 3 a.m. N/A N/A N/A 20.0 ppb (19) N/A N/A 24.0 ppb (18) 0.12 ppb (1) N/A 9.8 μg/m3 (41) 41.0
 
May 20, 2019, 2 a.m. N/A N/A N/A 3.0 ppb (3) N/A N/A 44.0 ppb (34) 0.09 ppb (1) N/A 5.9 μg/m3 (25) 34.0
 
May 20, 2019, 1 a.m. N/A N/A N/A 2.0 ppb (2) N/A N/A 46.0 ppb (35) 0.08 ppb (1) N/A 5.3 μg/m3 (22) 35.0
 
May 20, 2019, midnight N/A N/A N/A 2.0 ppb (2) N/A N/A 46.0 ppb (35) 0.08 ppb (1) N/A 4.5 μg/m3 (19) 35.0
 
May 19, 2019, 11 p.m. N/A N/A N/A 1.0 ppb (1) N/A N/A 46.0 ppb (35) 0.07 ppb (1) N/A 3.6 μg/m3 (15) 35.0
 
May 19, 2019, 10 p.m. N/A N/A N/A 1.0 ppb (1) N/A N/A 45.0 ppb (35) 0.07 ppb (1) N/A 2.4 μg/m3 (10) 35.0
 
May 19, 2019, 9 p.m. N/A N/A N/A 1.0 ppb (1) N/A N/A 42.0 ppb (32) 0.09 ppb (1) N/A 2.4 μg/m3 (10) 32.0
 
May 19, 2019, 8 p.m. N/A N/A N/A 1.0 ppb (1) N/A N/A 41.0 ppb (32) 0.09 ppb (1) N/A 2.7 μg/m3 (11) 32.0
 
May 19, 2019, 7 p.m. N/A N/A N/A 1.0 ppb (1) N/A N/A 40.0 ppb (31) 0.09 ppb (1) N/A 2.8 μg/m3 (12) 31.0
 
May 19, 2019, 6 p.m. N/A N/A N/A 1.0 ppb (1) N/A N/A 39.0 ppb (30) 0.09 ppb (1) N/A 2.8 μg/m3 (12) 30.0
 
May 19, 2019, 5 p.m. N/A N/A N/A 1.0 ppb (1) N/A N/A 37.0 ppb (28) 0.08 ppb (1) N/A 2.4 μg/m3 (10) 28.0
 
May 19, 2019, 4 p.m. N/A N/A N/A 1.0 ppb (1) N/A N/A 38.0 ppb (29) 0.08 ppb (1) N/A 2.6 μg/m3 (11) 29.0
 
May 19, 2019, 3 p.m. N/A N/A N/A 1.0 ppb (1) N/A N/A 39.0 ppb (30) 0.08 ppb (1) N/A 2.8 μg/m3 (12) 30.0
 
May 19, 2019, 2 p.m. N/A N/A N/A 3.0 ppb (3) N/A N/A 32.0 ppb (25) 0.09 ppb (1) N/A 4.3 μg/m3 (18) 25.0
 
May 19, 2019, 1 p.m. N/A N/A N/A 5.0 ppb (5) N/A N/A 25.0 ppb (19) 0.1 ppb (1) N/A 6.2 μg/m3 (26) 26.0
 
May 19, 2019, noon N/A N/A N/A 10.0 ppb (9) N/A N/A 14.0 ppb (11) 0.11 ppb (1) N/A 8.8 μg/m3 (37) 37.0
 
May 19, 2019, 11 a.m. N/A N/A N/A 9.0 ppb (8) N/A N/A 17.0 ppb (13) 0.12 ppb (1) N/A 6.2 μg/m3 (26) 26.0
 
May 19, 2019, 10 a.m. N/A N/A N/A 7.0 ppb (6) N/A N/A 23.0 ppb (18) 0.12 ppb (1) N/A 7.4 μg/m3 (31) 31.0
 
May 19, 2019, 9 a.m. N/A N/A N/A 7.0 ppb (6) N/A N/A 23.0 ppb (18) 0.12 ppb (1) N/A 6.8 μg/m3 (28) 28.0
 
May 19, 2019, 8 a.m. N/A N/A N/A 8.0 ppb (7) N/A N/A 22.0 ppb (17) 0.11 ppb (1) N/A 8.3 μg/m3 (35) 35.0
 
May 19, 2019, 7 a.m. N/A N/A N/A 7.0 ppb (6) N/A N/A 24.0 ppb (18) 0.12 ppb (1) N/A 5.7 μg/m3 (24) 24.0
 
May 19, 2019, 6 a.m. N/A N/A N/A 13.0 ppb (12) N/A N/A 19.0 ppb (15) 0.15 ppb (2) N/A 5.2 μg/m3 (22) 22.0
 
May 19, 2019, 5 a.m. N/A N/A N/A 9.0 ppb (8) N/A N/A 24.0 ppb (18) 0.14 ppb (2) N/A 4.1 μg/m3 (17) 18.0
 
May 19, 2019, 4 a.m. N/A N/A N/A 7.0 ppb (6) N/A N/A 28.0 ppb (22) 0.13 ppb (1) N/A 4.2 μg/m3 (18) 22.0
 
May 19, 2019, 3 a.m. N/A N/A N/A 5.0 ppb (5) N/A N/A 30.0 ppb (23) 0.11 ppb (1) N/A 4.4 μg/m3 (18) 23.0
 
May 19, 2019, 2 a.m. N/A N/A N/A 5.0 ppb (5) N/A N/A 32.0 ppb (25) 0.1 ppb (1) N/A 4.5 μg/m3 (19) 25.0
 
May 19, 2019, 1 a.m. N/A N/A N/A 2.0 ppb (2) N/A N/A 37.0 ppb (28) 0.1 ppb (1) N/A 7.9 μg/m3 (33) 33.0
 
May 19, 2019, midnight N/A N/A N/A 2.0 ppb (2) N/A N/A 38.0 ppb (29) 0.1 ppb (1) N/A 5.1 μg/m3 (21) 29.0
 
May 18, 2019, 11 p.m. N/A N/A N/A 2.0 ppb (2) N/A N/A 39.0 ppb (30) 0.1 ppb (1) N/A 4.5 μg/m3 (19) 30.0
 
May 18, 2019, 10 p.m. N/A N/A N/A 2.0 ppb (2) N/A N/A 38.0 ppb (29) 0.11 ppb (1) N/A 2.7 μg/m3 (11) 29.0
 
May 18, 2019, 9 p.m. N/A N/A N/A 2.0 ppb (2) N/A N/A 38.0 ppb (29) 0.11 ppb (1) N/A 2.8 μg/m3 (12) 29.0
 
May 18, 2019, 8 p.m. N/A N/A N/A 2.0 ppb (2) N/A N/A 38.0 ppb (29) 0.11 ppb (1) N/A 2.1 μg/m3 (9) 29.0
 
May 18, 2019, 7 p.m. N/A N/A N/A 2.0 ppb (2) N/A N/A 38.0 ppb (29) 0.1 ppb (1) N/A 2.0 μg/m3 (8) 29.0
 
May 18, 2019, 6 p.m. N/A N/A N/A 3.0 ppb (3) N/A N/A 39.0 ppb (30) 0.1 ppb (1) N/A 2.2 μg/m3 (9) 30.0
 
May 18, 2019, 5 p.m. N/A N/A N/A 4.0 ppb (4) N/A N/A 38.0 ppb (29) 0.11 ppb (1) N/A 1.9 μg/m3 (8) 29.0
 
May 18, 2019, 4 p.m. N/A N/A N/A 4.0 ppb (4) N/A N/A 40.0 ppb (31) 0.1 ppb (1) N/A 1.1 μg/m3 (5) 31.0
 
May 18, 2019, 3 p.m. N/A N/A N/A 4.0 ppb (4) N/A N/A 37.0 ppb (28) 0.1 ppb (1) N/A 0.9 μg/m3 (4) 28.0
 
May 18, 2019, 2 p.m. N/A N/A N/A 4.0 ppb (4) N/A N/A 39.0 ppb (30) 0.1 ppb (1) N/A 0.6 μg/m3 (2) 30.0
 
May 18, 2019, 1 p.m. N/A N/A N/A 4.0 ppb (4) N/A N/A 40.0 ppb (31) 0.09 ppb (1) N/A 0.8 μg/m3 (3) 31.0
 
May 18, 2019, noon N/A N/A N/A 4.0 ppb (4) N/A N/A 40.0 ppb (31) 0.09 ppb (1) N/A 2.3 μg/m3 (10) 31.0
 
May 18, 2019, 11 a.m. N/A N/A N/A 5.0 ppb (5) N/A N/A 39.0 ppb (30) 0.09 ppb (1) N/A 2.8 μg/m3 (12) 30.0
 
May 18, 2019, 10 a.m. N/A N/A N/A 3.0 ppb (3) N/A N/A 37.0 ppb (28) 0.1 ppb (1) N/A 2.5 μg/m3 (10) 28.0
 
May 18, 2019, 9 a.m. N/A N/A N/A 4.0 ppb (4) N/A N/A 33.0 ppb (25) 0.09 ppb (1) N/A 3.7 μg/m3 (15) 25.0
 
May 18, 2019, 8 a.m. N/A N/A N/A 4.0 ppb (4) N/A N/A 34.0 ppb (26) 0.09 ppb (1) N/A 4.0 μg/m3 (17) 26.0
 
May 18, 2019, 7 a.m. N/A N/A N/A 4.0 ppb (4) N/A N/A 33.0 ppb (25) 0.1 ppb (1) N/A 2.7 μg/m3 (11) 25.0
 
May 18, 2019, 6 a.m. N/A N/A N/A 6.0 ppb (6) N/A N/A 31.0 ppb (24) 0.09 ppb (1) N/A 2.8 μg/m3 (12) 24.0
 
May 18, 2019, 4 a.m. N/A N/A N/A 2.0 ppb (2) N/A N/A 41.0 ppb (32) 0.1 ppb (1) N/A 4.3 μg/m3 (18) 32.0
 
May 18, 2019, 3 a.m. N/A N/A N/A 6.0 ppb (6) N/A N/A 35.0 ppb (27) 0.12 ppb (1) N/A 5.1 μg/m3 (21) 27.0
 
May 18, 2019, 2 a.m. N/A N/A N/A 5.0 ppb (5) N/A N/A 37.0 ppb (28) 0.12 ppb (1) N/A 4.6 μg/m3 (19) 28.0
 
May 18, 2019, 1 a.m. N/A N/A N/A 5.0 ppb (5) N/A N/A 37.0 ppb (28) 0.11 ppb (1) N/A 4.1 μg/m3 (17) 28.0
 
May 18, 2019, midnight N/A N/A N/A 7.0 ppb (6) N/A N/A 36.0 ppb (28) 0.11 ppb (1) N/A 3.9 μg/m3 (16) 28.0
 
May 17, 2019, 11 p.m. N/A N/A N/A 7.0 ppb (6) N/A N/A 37.0 ppb (28) 0.12 ppb (1) N/A 4.4 μg/m3 (18) 28.0
 
May 17, 2019, 10 p.m. N/A N/A N/A 10.0 ppb (9) N/A N/A 34.0 ppb (26) 0.18 ppb (2) N/A 5.7 μg/m3 (24) 26.0
 
May 17, 2019, 9 p.m. N/A N/A N/A 6.0 ppb (6) N/A N/A 35.0 ppb (27) 0.14 ppb (2) N/A 5.4 μg/m3 (23) 27.0
 
May 17, 2019, 8 p.m. N/A N/A N/A 5.0 ppb (5) N/A N/A 37.0 ppb (28) 0.13 ppb (1) N/A 5.7 μg/m3 (24) 28.0
 
May 17, 2019, 7 p.m. N/A N/A N/A 6.0 ppb (6) N/A N/A 36.0 ppb (28) 0.17 ppb (2) N/A 7.2 μg/m3 (30) 30.0
 
May 17, 2019, 6 p.m. N/A N/A N/A 7.0 ppb (6) N/A N/A 33.0 ppb (25) 0.13 ppb (1) N/A 7.3 μg/m3 (30) 30.0
 
May 17, 2019, 5 p.m. N/A N/A N/A 8.0 ppb (7) N/A N/A 31.0 ppb (24) 0.13 ppb (1) N/A 6.3 μg/m3 (26) 26.0
 
May 17, 2019, 4 p.m. N/A N/A N/A 13.0 ppb (12) N/A N/A 27.0 ppb (21) 0.14 ppb (2) N/A 7.4 μg/m3 (31) 31.0
 
May 17, 2019, 3 p.m. N/A N/A N/A 6.0 ppb (6) N/A N/A 31.0 ppb (24) 0.12 ppb (1) N/A 4.7 μg/m3 (20) 24.0
 
May 17, 2019, 2 p.m. N/A N/A N/A 8.0 ppb (7) N/A N/A 29.0 ppb (22) 0.12 ppb (1) N/A 4.2 μg/m3 (18) 22.0
 
May 17, 2019, 1 p.m. N/A N/A N/A 11.0 ppb (10) N/A N/A 27.0 ppb (21) 0.14 ppb (2) N/A 3.8 μg/m3 (16) 21.0
 
May 17, 2019, noon N/A N/A N/A 10.0 ppb (9) N/A N/A 26.0 ppb (20) 0.11 ppb (1) N/A 3.1 μg/m3 (13) 20.0
 
May 17, 2019, 11 a.m. N/A N/A N/A 8.0 ppb (7) N/A N/A 25.0 ppb (19) 0.1 ppb (1) N/A 2.3 μg/m3 (10) 19.0
 
May 17, 2019, 10 a.m. N/A N/A N/A 16.0 ppb (15) N/A N/A 15.0 ppb (12) 0.11 ppb (1) N/A 5.0 μg/m3 (21) 21.0
 
May 17, 2019, 9 a.m. N/A N/A N/A 12.0 ppb (11) N/A N/A 19.0 ppb (15) 0.11 ppb (1) N/A 5.6 μg/m3 (23) 23.0
 
May 17, 2019, 8 a.m. N/A N/A N/A 9.0 ppb (8) N/A N/A 24.0 ppb (18) 0.1 ppb (1) N/A 4.8 μg/m3 (20) 20.0
 
May 17, 2019, 7 a.m. N/A N/A N/A 8.0 ppb (7) N/A N/A 25.0 ppb (19) 0.11 ppb (1) N/A 5.2 μg/m3 (22) 22.0
 
May 17, 2019, 6 a.m. N/A N/A N/A 25.0 ppb (23) N/A N/A 8.0 ppb (6) 0.18 ppb (2) N/A 7.5 μg/m3 (31) 31.0
 
May 17, 2019, 5 a.m. N/A N/A N/A 12.0 ppb (11) N/A N/A 17.0 ppb (13) 0.16 ppb (2) N/A 7.4 μg/m3 (31) 31.0
 
May 17, 2019, 4 a.m. N/A N/A N/A 12.0 ppb (11) N/A N/A 18.0 ppb (14) 0.16 ppb (2) N/A 7.4 μg/m3 (31) 31.0
 
May 17, 2019, 3 a.m. N/A N/A N/A 11.0 ppb (10) N/A N/A 22.0 ppb (17) 0.13 ppb (1) N/A 6.9 μg/m3 (29) 29.0
 
May 17, 2019, 2 a.m. N/A N/A N/A 12.0 ppb (11) N/A N/A 20.0 ppb (15) 0.14 ppb (2) N/A 8.1 μg/m3 (34) 34.0
 
May 17, 2019, 1 a.m. N/A N/A N/A 10.0 ppb (9) N/A N/A 22.0 ppb (17) 0.14 ppb (2) N/A 8.7 μg/m3 (36) 36.0
 
May 17, 2019, midnight N/A N/A N/A 11.0 ppb (10) N/A N/A 23.0 ppb (18) 0.15 ppb (2) N/A 9.3 μg/m3 (39) 39.0
 
May 16, 2019, 11 p.m. N/A N/A N/A 9.0 ppb (8) N/A N/A 25.0 ppb (19) 0.15 ppb (2) N/A 8.4 μg/m3 (35) 35.0
 
May 16, 2019, 10 p.m. N/A N/A N/A 7.0 ppb (6) N/A N/A 27.0 ppb (21) 0.13 ppb (1) N/A 5.9 μg/m3 (25) 25.0
 
May 16, 2019, 9 p.m. N/A N/A N/A 7.0 ppb (6) N/A N/A 25.0 ppb (19) 0.13 ppb (1) N/A 6.1 μg/m3 (25) 25.0
 
May 16, 2019, 8 p.m. N/A N/A N/A 8.0 ppb (7) N/A N/A 22.0 ppb (17) 0.14 ppb (2) N/A 8.5 μg/m3 (35) 35.0
 
May 16, 2019, 7 p.m. N/A N/A N/A 5.0 ppb (5) N/A N/A 27.0 ppb (21) 0.11 ppb (1) N/A 5.5 μg/m3 (23) 23.0
 
May 16, 2019, 6 p.m. N/A N/A N/A 5.0 ppb (5) N/A N/A 31.0 ppb (24) 0.09 ppb (1) N/A 3.8 μg/m3 (16) 24.0
 
May 16, 2019, 5 p.m. N/A N/A N/A 6.0 ppb (6) N/A N/A 31.0 ppb (24) 0.1 ppb (1) N/A 4.2 μg/m3 (18) 24.0
 
May 16, 2019, 4 p.m. N/A N/A N/A 3.0 ppb (3) N/A N/A 34.0 ppb (26) 0.1 ppb (1) N/A 3.3 μg/m3 (14) 26.0
 
May 16, 2019, 2 p.m. N/A N/A N/A 5.0 ppb (5) N/A N/A 27.0 ppb (21) 0.13 ppb (1) N/A 2.6 μg/m3 (11) 21.0
 
May 16, 2019, 1 p.m. N/A N/A N/A 9.0 ppb (8) N/A N/A 22.0 ppb (17) 0.12 ppb (1) N/A 2.9 μg/m3 (12) 17.0
 
May 16, 2019, noon N/A N/A N/A 7.0 ppb (6) N/A N/A 27.0 ppb (21) 0.12 ppb (1) N/A 2.6 μg/m3 (11) 21.0
 
May 16, 2019, 11 a.m. N/A N/A N/A 5.0 ppb (5) N/A N/A 28.0 ppb (22) 0.1 ppb (1) N/A 2.2 μg/m3 (9) 22.0
 
May 16, 2019, 10 a.m. N/A N/A N/A 3.0 ppb (3) N/A N/A 29.0 ppb (22) 0.1 ppb (1) N/A 2.4 μg/m3 (10) 22.0
 
May 16, 2019, 9 a.m. N/A N/A N/A 3.0 ppb (3) N/A N/A 28.0 ppb (22) 0.1 ppb (1) N/A 2.6 μg/m3 (11) 22.0
 
May 16, 2019, 8 a.m. N/A N/A N/A 2.0 ppb (2) N/A N/A 32.0 ppb (25) 0.09 ppb (1) N/A 2.5 μg/m3 (10) 25.0
 
May 16, 2019, 7 a.m. N/A N/A N/A 3.0 ppb (3) N/A N/A 31.0 ppb (24) 0.09 ppb (1) N/A 3.4 μg/m3 (14) 24.0
 
May 16, 2019, 6 a.m. N/A N/A N/A 3.0 ppb (3) N/A N/A 32.0 ppb (25) 0.09 ppb (1) N/A 3.3 μg/m3 (14) 25.0
 
May 16, 2019, 5 a.m. N/A N/A N/A 3.0 ppb (3) N/A N/A 32.0 ppb (25) 0.09 ppb (1) N/A 4.2 μg/m3 (18) 25.0
 
May 16, 2019, 4 a.m. N/A N/A N/A 3.0 ppb (3) N/A N/A 33.0 ppb (25) 0.09 ppb (1) N/A 5.3 μg/m3 (22) 25.0
 
May 16, 2019, 3 a.m. N/A N/A N/A 3.0 ppb (3) N/A N/A 35.0 ppb (27) 0.09 ppb (1) N/A 4.1 μg/m3 (17) 27.0
 
May 16, 2019, 2 a.m. N/A N/A N/A 3.0 ppb (3) N/A N/A 37.0 ppb (28) 0.09 ppb (1) N/A 6.8 μg/m3 (28) 28.0
 
May 16, 2019, 1 a.m. N/A N/A N/A 3.0 ppb (3) N/A N/A 40.0 ppb (31) 0.1 ppb (1) N/A 7.4 μg/m3 (31) 31.0
 
May 16, 2019, midnight N/A N/A N/A 4.0 ppb (4) N/A N/A 41.0 ppb (32) 0.1 ppb (1) N/A 6.7 μg/m3 (28) 32.0
 
May 15, 2019, 11 p.m. N/A N/A N/A 4.0 ppb (4) N/A N/A 42.0 ppb (32) 0.09 ppb (1) N/A 5.6 μg/m3 (23) 32.0
 
May 15, 2019, 10 p.m. N/A N/A N/A 3.0 ppb (3) N/A N/A 42.0 ppb (32) 0.08 ppb (1) N/A 3.9 μg/m3 (16) 32.0
 
May 15, 2019, 9 p.m. N/A N/A N/A 3.0 ppb (3) N/A N/A 41.0 ppb (32) 0.08 ppb (1) N/A 3.4 μg/m3 (14) 32.0
 
May 15, 2019, 8 p.m. N/A N/A N/A 3.0 ppb (3) N/A N/A 42.0 ppb (32) 0.08 ppb (1) N/A 4.3 μg/m3 (18) 32.0
 
May 15, 2019, 7 p.m. N/A N/A N/A 3.0 ppb (3) N/A N/A 41.0 ppb (32) 0.08 ppb (1) N/A 4.1 μg/m3 (17) 32.0
 
May 15, 2019, 6 p.m. N/A N/A N/A 4.0 ppb (4) N/A N/A 37.0 ppb (28) 0.1 ppb (1) N/A 5.8 μg/m3 (24) 28.0
 
May 15, 2019, 5 p.m. N/A N/A N/A 4.0 ppb (4) N/A N/A 36.0 ppb (28) 0.11 ppb (1) N/A 7.3 μg/m3 (30) 30.0
 
May 15, 2019, 4 p.m. N/A N/A N/A 4.0 ppb (4) N/A N/A 39.0 ppb (30) 0.11 ppb (1) N/A 7.9 μg/m3 (33) 33.0
 
May 15, 2019, 3 p.m. N/A N/A N/A 6.0 ppb (6) N/A N/A 35.0 ppb (27) 0.11 ppb (1) N/A 9.2 μg/m3 (38) 38.0
 
May 15, 2019, 2 p.m. N/A N/A N/A 6.0 ppb (6) N/A N/A 37.0 ppb (28) 0.1 ppb (1) N/A 2.1 μg/m3 (9) 28.0
 
May 15, 2019, 1 p.m. N/A N/A N/A 12.0 ppb (11) N/A N/A 32.0 ppb (25) 0.11 ppb (1) N/A 2.5 μg/m3 (10) 25.0
 
May 15, 2019, noon N/A N/A N/A 8.0 ppb (7) N/A N/A 36.0 ppb (28) 0.1 ppb (1) N/A 2.1 μg/m3 (9) 28.0
 
May 15, 2019, 11 a.m. N/A N/A N/A 15.0 ppb (14) N/A N/A 25.0 ppb (19) 0.12 ppb (1) N/A 6.2 μg/m3 (26) 26.0
 
May 15, 2019, 10 a.m. N/A N/A N/A 14.0 ppb (13) N/A N/A 20.0 ppb (15) 0.12 ppb (1) N/A 9.2 μg/m3 (38) 38.0
 
May 15, 2019, 9 a.m. N/A N/A N/A 6.0 ppb (6) N/A N/A 30.0 ppb (23) 0.09 ppb (1) N/A 8.0 μg/m3 (33) 33.0
 
May 15, 2019, 8 a.m. N/A N/A N/A 4.0 ppb (4) N/A N/A 36.0 ppb (28) 0.09 ppb (1) N/A 6.5 μg/m3 (27) 28.0
 
May 15, 2019, 7 a.m. N/A N/A N/A 4.0 ppb (4) N/A N/A 40.0 ppb (31) 0.09 ppb (1) N/A 5.8 μg/m3 (24) 31.0
 
May 15, 2019, 6 a.m. N/A N/A N/A 5.0 ppb (5) N/A N/A 40.0 ppb (31) 0.1 ppb (1) N/A 5.9 μg/m3 (25) 31.0
 
May 15, 2019, 5 a.m. N/A N/A N/A 5.0 ppb (5) N/A N/A 42.0 ppb (32) 0.1 ppb (1) N/A 5.9 μg/m3 (25) 32.0
 
May 15, 2019, 4 a.m. N/A N/A N/A 21.0 ppb (19) N/A N/A 24.0 ppb (18) 0.28 ppb (3) N/A 8.6 μg/m3 (36) 36.0
 
May 15, 2019, 3 a.m. N/A N/A N/A 17.0 ppb (16) N/A N/A 26.0 ppb (20) 0.26 ppb (3) N/A 8.5 μg/m3 (35) 35.0
 
May 15, 2019, 2 a.m. N/A N/A N/A 14.0 ppb (13) N/A N/A 37.0 ppb (28) 0.19 ppb (2) N/A 7.4 μg/m3 (31) 31.0
 
May 15, 2019, 1 a.m. N/A N/A N/A 15.0 ppb (14) N/A N/A 35.0 ppb (27) 0.2 ppb (2) N/A 6.5 μg/m3 (27) 27.0
 
May 15, 2019, midnight N/A N/A N/A 10.0 ppb (9) N/A N/A 42.0 ppb (32) 0.2 ppb (2) N/A 7.1 μg/m3 (30) 32.0
 
May 14, 2019, 11 p.m. N/A N/A N/A 5.0 ppb (5) N/A N/A 52.0 ppb (40) 0.09 ppb (1) N/A 7.2 μg/m3 (30) 40.0
 
May 14, 2019, 10 p.m. N/A N/A N/A 6.0 ppb (6) N/A N/A 53.0 ppb (41) 0.1 ppb (1) N/A 10.7 μg/m3 (45) 45.0
 
May 14, 2019, 9 p.m. N/A N/A N/A 4.0 ppb (4) N/A N/A 53.0 ppb (41) 0.09 ppb (1) N/A 7.8 μg/m3 (32) 41.0
 
May 14, 2019, 8 p.m. N/A N/A N/A 3.0 ppb (3) N/A N/A 52.0 ppb (40) 0.11 ppb (1) N/A 8.1 μg/m3 (34) 40.0
 
May 14, 2019, 7 p.m. N/A N/A N/A 4.0 ppb (4) N/A N/A 51.0 ppb (39) 0.13 ppb (1) N/A 7.5 μg/m3 (31) 39.0
 
May 14, 2019, 6 p.m. N/A N/A N/A 3.0 ppb (3) N/A N/A 51.0 ppb (39) 0.11 ppb (1) N/A 6.4 μg/m3 (27) 39.0
 
May 14, 2019, 5 p.m. N/A N/A N/A 4.0 ppb (4) N/A N/A 48.0 ppb (37) 0.1 ppb (1) N/A 7.7 μg/m3 (32) 37.0
 
May 14, 2019, 4 p.m. N/A N/A N/A 9.0 ppb (8) N/A N/A 41.0 ppb (32) 0.14 ppb (2) N/A 10.7 μg/m3 (45) 45.0
 
May 14, 2019, 3 p.m. N/A N/A N/A 18.0 ppb (17) N/A N/A 19.0 ppb (15) 0.2 ppb (2) N/A 14.0 μg/m3 (54) 54.0
 
May 14, 2019, 2 p.m. N/A N/A N/A 17.0 ppb (16) N/A N/A 16.0 ppb (12) 0.19 ppb (2) N/A 11.1 μg/m3 (46) 46.0
 
May 14, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 10.8 μg/m3 (45) 45.0
 
May 14, 2019, noon N/A N/A N/A 20.0 ppb (19) N/A N/A 15.0 ppb (12) 0.15 ppb (2) N/A 7.9 μg/m3 (33) 33.0
 
May 14, 2019, 11 a.m. N/A N/A N/A 14.0 ppb (13) N/A N/A 25.0 ppb (19) 0.49 ppb (5) N/A 5.9 μg/m3 (25) 25.0
 
May 14, 2019, 10 a.m. N/A N/A N/A 10.0 ppb (9) N/A N/A 23.0 ppb (18) 0.11 ppb (1) N/A 7.8 μg/m3 (32) 32.0
 
May 14, 2019, 9 a.m. N/A N/A N/A 12.0 ppb (11) N/A N/A 25.0 ppb (19) 0.12 ppb (1) N/A 10.0 μg/m3 (42) 42.0
 
May 14, 2019, 8 a.m. N/A N/A N/A 9.0 ppb (8) N/A N/A 31.0 ppb (24) 0.12 ppb (1) N/A 9.9 μg/m3 (41) 41.0
 
May 14, 2019, 7 a.m. N/A N/A N/A 9.0 ppb (8) N/A N/A 31.0 ppb (24) 0.12 ppb (1) N/A 10.5 μg/m3 (44) 44.0
 
May 14, 2019, 6 a.m. N/A N/A N/A 12.0 ppb (11) N/A N/A 34.0 ppb (26) 0.12 ppb (1) N/A 10.8 μg/m3 (45) 45.0
 
May 14, 2019, 5 a.m. N/A N/A N/A 8.0 ppb (7) N/A N/A 42.0 ppb (32) 0.12 ppb (1) N/A 6.8 μg/m3 (28) 32.0
 
May 14, 2019, 4 a.m. N/A N/A N/A 6.0 ppb (6) N/A N/A 45.0 ppb (35) 0.12 ppb (1) N/A 7.2 μg/m3 (30) 35.0
 
May 14, 2019, 3 a.m. N/A N/A N/A 6.0 ppb (6) N/A N/A 51.0 ppb (39) 0.1 ppb (1) N/A 6.6 μg/m3 (28) 39.0
 
May 14, 2019, 2 a.m. N/A N/A N/A 7.0 ppb (6) N/A N/A 50.0 ppb (38) 0.08 ppb (1) N/A 7.9 μg/m3 (33) 38.0
 
May 14, 2019, 1 a.m. N/A N/A N/A 3.0 ppb (3) N/A N/A 56.0 ppb (43) 0.06 ppb (1) N/A 6.1 μg/m3 (25) 43.0
 
May 13, 2019, 11 p.m. N/A N/A N/A 2.0 ppb (2) N/A N/A 57.0 ppb (44) 0.06 ppb (1) N/A 6.6 μg/m3 (28) 44.0
 
May 13, 2019, 10 p.m. N/A N/A N/A 3.0 ppb (3) N/A N/A 57.0 ppb (44) 0.07 ppb (1) N/A 7.9 μg/m3 (33) 44.0
 
May 13, 2019, 9 p.m. N/A N/A N/A 3.0 ppb (3) N/A N/A 58.0 ppb (45) 0.08 ppb (1) N/A 8.4 μg/m3 (35) 45.0
 
May 13, 2019, 8 p.m. N/A N/A N/A 2.0 ppb (2) N/A N/A 57.0 ppb (44) 0.08 ppb (1) N/A 8.8 μg/m3 (37) 44.0
 
May 13, 2019, 7 p.m. N/A N/A N/A 2.0 ppb (2) N/A N/A 55.0 ppb (42) 0.08 ppb (1) N/A 9.2 μg/m3 (38) 42.0
 
May 13, 2019, 6 p.m. N/A N/A N/A 3.0 ppb (3) N/A N/A 50.0 ppb (38) 0.07 ppb (1) N/A 9.4 μg/m3 (39) 39.0
 
May 13, 2019, 5 p.m. N/A N/A N/A 4.0 ppb (4) N/A N/A 45.0 ppb (35) 0.07 ppb (1) N/A 9.5 μg/m3 (40) 40.0
 
May 13, 2019, 4 p.m. N/A N/A N/A 6.0 ppb (6) N/A N/A 40.0 ppb (31) 0.08 ppb (1) N/A 8.9 μg/m3 (37) 37.0
 
May 13, 2019, 3 p.m. N/A N/A N/A 7.0 ppb (6) N/A N/A 35.0 ppb (27) 0.09 ppb (1) N/A 8.8 μg/m3 (37) 37.0
 
May 13, 2019, 2 p.m. N/A N/A N/A 7.0 ppb (6) N/A N/A 34.0 ppb (26) 0.08 ppb (1) N/A 7.3 μg/m3 (30) 30.0
 
May 13, 2019, 1 p.m. N/A N/A N/A 7.0 ppb (6) N/A N/A 34.0 ppb (26) 0.06 ppb (1) N/A 7.0 μg/m3 (29) 29.0
 
May 13, 2019, noon N/A N/A N/A 9.0 ppb (8) N/A N/A 32.0 ppb (25) 0.07 ppb (1) N/A 6.3 μg/m3 (26) 26.0