AQSQID: 000100132

Site Name: Mahon Park

Location: N Vancouver (W 16th St), CC

Reporting: True, Located: True

Current AQI: 47.0

N Vancouver (W 16th St) CC, CA: 49.323891, -123.083611

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
April 6, 2020, 6 p.m. N/A N/A N/A N/A N/A N/A 17.0 ppb (13) N/A N/A 11.3 μg/m3 (47) 47.0
 
April 6, 2020, 5 p.m. N/A N/A N/A N/A N/A N/A 18.0 ppb (14) N/A N/A 7.3 μg/m3 (30) 30.0
 
April 6, 2020, 4 p.m. N/A N/A N/A N/A N/A N/A 8.0 ppb (6) N/A N/A 6.9 μg/m3 (29) 29.0
 
April 6, 2020, 3 p.m. N/A N/A N/A N/A N/A N/A 5.0 ppb (4) N/A N/A 5.7 μg/m3 (24) 24.0
 
April 6, 2020, 2 p.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 4.0 μg/m3 (17) 17.0
 
April 6, 2020, 1 p.m. N/A N/A N/A N/A N/A N/A 15.0 ppb (12) N/A N/A 2.5 μg/m3 (10) 12.0
 
April 6, 2020, noon N/A N/A N/A N/A N/A N/A 17.0 ppb (13) N/A N/A 2.0 μg/m3 (8) 13.0
 
April 6, 2020, 11 a.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (15) N/A N/A 2.1 μg/m3 (9) 15.0
 
April 6, 2020, 10 a.m. N/A N/A N/A N/A N/A N/A 18.0 ppb (14) N/A N/A 2.2 μg/m3 (9) 14.0
 
April 6, 2020, 9 a.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (18) N/A N/A 2.1 μg/m3 (9) 18.0
 
April 6, 2020, 8 a.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) N/A N/A 2.1 μg/m3 (9) 23.0
 
April 6, 2020, 7 a.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) N/A N/A 1.8 μg/m3 (8) 24.0
 
April 6, 2020, 6 a.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (22) N/A N/A 2.4 μg/m3 (10) 22.0
 
April 6, 2020, 5 a.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (22) N/A N/A 2.2 μg/m3 (9) 22.0
 
April 6, 2020, 4 a.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) N/A N/A 2.2 μg/m3 (9) 24.0
 
April 6, 2020, 3 a.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) N/A N/A 3.2 μg/m3 (13) 23.0
 
April 6, 2020, 2 a.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) N/A N/A 2.3 μg/m3 (10) 27.0
 
April 6, 2020, 1 a.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A N/A 2.0 μg/m3 (8) 28.0
 
April 6, 2020, midnight N/A N/A N/A N/A N/A N/A 39.0 ppb (30) N/A N/A 1.5 μg/m3 (6) 30.0
 
April 5, 2020, 11 p.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (32) N/A N/A 1.3 μg/m3 (5) 32.0
 
April 5, 2020, 10 p.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (30) N/A N/A 1.9 μg/m3 (8) 30.0
 
April 5, 2020, 9 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A N/A 1.8 μg/m3 (8) 28.0
 
April 5, 2020, 8 p.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (25) N/A N/A 1.9 μg/m3 (8) 25.0
 
April 5, 2020, 7 p.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) N/A N/A 2.0 μg/m3 (8) 23.0
 
April 5, 2020, 6 p.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (22) N/A N/A 1.7 μg/m3 (7) 22.0
 
April 5, 2020, 5 p.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (20) N/A N/A 1.8 μg/m3 (8) 20.0
 
April 5, 2020, 4 p.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (20) N/A N/A 1.3 μg/m3 (5) 20.0
 
April 5, 2020, 3 p.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (18) N/A N/A 1.3 μg/m3 (5) 18.0
 
April 5, 2020, 2 p.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (18) N/A N/A 0.7 μg/m3 (3) 18.0
 
April 5, 2020, 1 p.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (22) N/A N/A 0.6 μg/m3 (2) 22.0
 
April 5, 2020, noon N/A N/A N/A N/A N/A N/A 30.0 ppb (23) N/A N/A 0.5 μg/m3 (2) 23.0
 
April 5, 2020, 11 a.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) N/A N/A 0.5 μg/m3 (2) 24.0
 
April 5, 2020, 10 a.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) N/A N/A 0.5 μg/m3 (2) 24.0
 
April 5, 2020, 9 a.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (25) N/A N/A 0.4 μg/m3 (2) 25.0
 
April 5, 2020, 8 a.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) N/A N/A 0.4 μg/m3 (2) 25.0
 
April 5, 2020, 7 a.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) N/A N/A 0.4 μg/m3 (2) 25.0
 
April 5, 2020, 6 a.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (25) N/A N/A 0.3 μg/m3 (1) 25.0
 
April 5, 2020, 5 a.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (25) N/A N/A 0.6 μg/m3 (2) 25.0
 
April 5, 2020, 4 a.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (25) N/A N/A 0.6 μg/m3 (2) 25.0
 
April 5, 2020, 3 a.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (25) N/A N/A 0.9 μg/m3 (4) 25.0
 
April 5, 2020, 2 a.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) N/A N/A 8.8 μg/m3 (37) 37.0
 
April 5, 2020, 1 a.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (31) N/A N/A 0.4 μg/m3 (2) 31.0
 
April 5, 2020, midnight N/A N/A N/A N/A N/A N/A 39.0 ppb (30) N/A N/A 0.5 μg/m3 (2) 30.0
 
April 4, 2020, 11 p.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (31) N/A N/A 0.4 μg/m3 (2) 31.0
 
April 4, 2020, 10 p.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (31) N/A N/A 0.3 μg/m3 (1) 31.0
 
April 4, 2020, 9 p.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (31) N/A N/A 0.3 μg/m3 (1) 31.0
 
April 4, 2020, 8 p.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (29) N/A N/A 0.3 μg/m3 (1) 29.0
 
April 4, 2020, 7 p.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) N/A N/A 1.3 μg/m3 (5) 25.0
 
April 4, 2020, 6 p.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) N/A N/A 1.7 μg/m3 (7) 24.0
 
April 4, 2020, 5 p.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (21) N/A N/A 2.3 μg/m3 (10) 21.0
 
April 4, 2020, 4 p.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (18) N/A N/A 2.2 μg/m3 (9) 18.0
 
April 4, 2020, 3 p.m. N/A N/A N/A N/A N/A N/A 18.0 ppb (14) N/A N/A 2.1 μg/m3 (9) 14.0
 
April 4, 2020, 2 p.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (15) N/A N/A 1.8 μg/m3 (8) 15.0
 
April 4, 2020, 1 p.m. N/A N/A N/A N/A N/A N/A 19.0 ppb (15) N/A N/A 1.7 μg/m3 (7) 15.0
 
April 4, 2020, noon N/A N/A N/A N/A N/A N/A 18.0 ppb (14) N/A N/A 1.9 μg/m3 (8) 14.0
 
April 4, 2020, 11 a.m. N/A N/A N/A N/A N/A N/A 16.0 ppb (12) N/A N/A 1.8 μg/m3 (8) 12.0
 
April 4, 2020, 10 a.m. N/A N/A N/A N/A N/A N/A 16.0 ppb (12) N/A N/A 2.1 μg/m3 (9) 12.0
 
April 4, 2020, 9 a.m. N/A N/A N/A N/A N/A N/A 16.0 ppb (12) N/A N/A 1.8 μg/m3 (8) 12.0
 
April 4, 2020, 8 a.m. N/A N/A N/A N/A N/A N/A 17.0 ppb (13) N/A N/A 2.3 μg/m3 (10) 13.0
 
April 4, 2020, 7 a.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (17) N/A N/A 1.7 μg/m3 (7) 17.0
 
April 4, 2020, 6 a.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (22) N/A N/A 1.9 μg/m3 (8) 22.0
 
April 4, 2020, 5 a.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) N/A N/A 2.7 μg/m3 (11) 24.0
 
April 4, 2020, 4 a.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (18) N/A N/A 3.9 μg/m3 (16) 18.0
 
April 4, 2020, 3 a.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (22) N/A N/A 4.7 μg/m3 (20) 22.0
 
April 4, 2020, 2 a.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) N/A N/A 4.4 μg/m3 (18) 24.0
 
April 4, 2020, 1 a.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) N/A N/A 1.7 μg/m3 (7) 26.0
 
April 4, 2020, midnight N/A N/A N/A N/A N/A N/A 35.0 ppb (27) N/A N/A 1.4 μg/m3 (6) 27.0
 
April 3, 2020, 11 p.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) N/A N/A 1.7 μg/m3 (7) 27.0
 
April 3, 2020, 10 p.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) N/A N/A 1.7 μg/m3 (7) 27.0
 
April 3, 2020, 9 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A N/A 1.8 μg/m3 (8) 28.0
 
April 3, 2020, 8 p.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) N/A N/A 2.3 μg/m3 (10) 27.0
 
April 3, 2020, 7 p.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) N/A N/A 2.0 μg/m3 (8) 27.0
 
April 3, 2020, 6 p.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) N/A N/A 1.8 μg/m3 (8) 27.0
 
April 3, 2020, 5 p.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (25) N/A N/A 1.7 μg/m3 (7) 25.0
 
April 3, 2020, 4 p.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (25) N/A N/A 1.8 μg/m3 (8) 25.0
 
April 3, 2020, 3 p.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (22) N/A N/A 1.6 μg/m3 (7) 22.0
 
April 3, 2020, 2 p.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) N/A N/A 1.5 μg/m3 (6) 24.0
 
April 3, 2020, 1 p.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) N/A N/A 1.7 μg/m3 (7) 23.0
 
April 3, 2020, noon N/A N/A N/A N/A N/A N/A 29.0 ppb (22) N/A N/A 1.7 μg/m3 (7) 22.0
 
April 3, 2020, 11 a.m. N/A N/A N/A N/A N/A N/A 16.0 ppb (12) N/A N/A 4.2 μg/m3 (18) 18.0
 
April 3, 2020, 10 a.m. N/A N/A N/A N/A N/A N/A 11.0 ppb (8) N/A N/A 6.1 μg/m3 (25) 25.0
 
April 3, 2020, 9 a.m. N/A N/A N/A N/A N/A N/A 11.0 ppb (8) N/A N/A 6.6 μg/m3 (28) 28.0
 
April 3, 2020, 8 a.m. N/A N/A N/A N/A N/A N/A 14.0 ppb (11) N/A N/A 5.6 μg/m3 (23) 23.0
 
April 3, 2020, 7 a.m. N/A N/A N/A N/A N/A N/A 15.0 ppb (12) N/A N/A 4.9 μg/m3 (20) 20.0
 
April 3, 2020, 6 a.m. N/A N/A N/A N/A N/A N/A 14.0 ppb (11) N/A N/A 4.6 μg/m3 (19) 19.0
 
April 3, 2020, 5 a.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (18) N/A N/A 4.7 μg/m3 (20) 20.0
 
April 3, 2020, 4 a.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (21) N/A N/A 5.3 μg/m3 (22) 22.0
 
April 3, 2020, 3 a.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) N/A N/A 5.4 μg/m3 (23) 23.0
 
April 3, 2020, 1 a.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (25) N/A N/A 3.7 μg/m3 (15) 25.0
 
April 3, 2020, midnight N/A N/A N/A N/A N/A N/A 28.0 ppb (22) N/A N/A 8.5 μg/m3 (35) 35.0
 
April 2, 2020, 11 p.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (21) N/A N/A 7.5 μg/m3 (31) 31.0
 
April 2, 2020, 10 p.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (22) N/A N/A 4.5 μg/m3 (19) 22.0
 
April 2, 2020, 9 p.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) N/A N/A 4.3 μg/m3 (18) 24.0
 
April 2, 2020, 8 p.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (25) N/A N/A 3.4 μg/m3 (14) 25.0
 
April 2, 2020, 7 p.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) N/A N/A 3.2 μg/m3 (13) 24.0
 
April 2, 2020, 6 p.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) N/A N/A 2.3 μg/m3 (10) 23.0
 
April 2, 2020, 5 p.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (22) N/A N/A 2.1 μg/m3 (9) 22.0
 
April 2, 2020, 4 p.m. N/A N/A N/A N/A N/A N/A 15.0 ppb (12) N/A N/A 3.2 μg/m3 (13) 13.0
 
April 2, 2020, 3 p.m. N/A N/A N/A N/A N/A N/A 10.0 ppb (8) N/A N/A 3.9 μg/m3 (16) 16.0
 
April 2, 2020, 2 p.m. N/A N/A N/A N/A N/A N/A 13.0 ppb (10) N/A N/A 3.7 μg/m3 (15) 15.0
 
April 2, 2020, 1 p.m. N/A N/A N/A N/A N/A N/A 10.0 ppb (8) N/A N/A 3.4 μg/m3 (14) 14.0
 
April 2, 2020, noon N/A N/A N/A N/A N/A N/A 8.0 ppb (6) N/A N/A 2.6 μg/m3 (11) 11.0
 
April 2, 2020, 11 a.m. N/A N/A N/A N/A N/A N/A 11.0 ppb (8) N/A N/A 1.9 μg/m3 (8) 8.0
 
April 2, 2020, 10 a.m. N/A N/A N/A N/A N/A N/A 14.0 ppb (11) N/A N/A 2.8 μg/m3 (12) 12.0
 
April 2, 2020, 9 a.m. N/A N/A N/A N/A N/A N/A 16.0 ppb (12) N/A N/A 2.8 μg/m3 (12) 12.0
 
April 2, 2020, 8 a.m. N/A N/A N/A N/A N/A N/A 19.0 ppb (15) N/A N/A 2.7 μg/m3 (11) 15.0
 
April 2, 2020, 7 a.m. N/A N/A N/A N/A N/A N/A 17.0 ppb (13) N/A N/A 3.2 μg/m3 (13) 13.0
 
April 2, 2020, 6 a.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (19) N/A N/A 3.4 μg/m3 (14) 19.0
 
April 2, 2020, 5 a.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (18) N/A N/A 3.6 μg/m3 (15) 18.0
 
April 2, 2020, 4 a.m. N/A N/A N/A N/A N/A N/A 17.0 ppb (13) N/A N/A 5.2 μg/m3 (22) 22.0
 
April 2, 2020, 3 a.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (16) N/A N/A 4.2 μg/m3 (18) 18.0
 
April 2, 2020, 2 a.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (19) N/A N/A 4.0 μg/m3 (17) 19.0
 
April 2, 2020, 1 a.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (19) N/A N/A 4.6 μg/m3 (19) 19.0
 
April 2, 2020, midnight N/A N/A N/A N/A N/A N/A 34.0 ppb (26) N/A N/A 1.9 μg/m3 (8) 26.0
 
April 1, 2020, 11 p.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) N/A N/A 1.8 μg/m3 (8) 26.0
 
April 1, 2020, 10 p.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) N/A N/A 1.5 μg/m3 (6) 27.0
 
April 1, 2020, 9 p.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) N/A N/A 1.5 μg/m3 (6) 27.0
 
April 1, 2020, 8 p.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) N/A N/A 2.1 μg/m3 (9) 26.0
 
April 1, 2020, 7 p.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) N/A N/A 2.7 μg/m3 (11) 24.0
 
April 1, 2020, 6 p.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (20) N/A N/A 2.9 μg/m3 (12) 20.0
 
April 1, 2020, 5 p.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (19) N/A N/A 2.3 μg/m3 (10) 19.0
 
April 1, 2020, 4 p.m. N/A N/A N/A N/A N/A N/A 19.0 ppb (15) N/A N/A 3.5 μg/m3 (15) 15.0
 
April 1, 2020, 3 p.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (17) N/A N/A 2.3 μg/m3 (10) 17.0
 
April 1, 2020, 2 p.m. N/A N/A N/A N/A N/A N/A 13.0 ppb (10) N/A N/A 3.6 μg/m3 (15) 15.0
 
April 1, 2020, 1 p.m. N/A N/A N/A N/A N/A N/A 14.0 ppb (11) N/A N/A 2.3 μg/m3 (10) 11.0
 
April 1, 2020, noon N/A N/A N/A N/A N/A N/A 12.0 ppb (9) N/A N/A 0.5 μg/m3 (2) 9.0
 
April 1, 2020, 11 a.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (15) N/A N/A 0.4 μg/m3 (2) 15.0
 
April 1, 2020, 10 a.m. N/A N/A N/A N/A N/A N/A 13.0 ppb (10) N/A N/A 0.3 μg/m3 (1) 10.0
 
April 1, 2020, 9 a.m. N/A N/A N/A N/A N/A N/A 15.0 ppb (12) N/A N/A 0.4 μg/m3 (2) 12.0
 
April 1, 2020, 8 a.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (19) N/A N/A 0.6 μg/m3 (2) 19.0
 
April 1, 2020, 5 a.m. N/A N/A N/A N/A N/A N/A 17.0 ppb (13) N/A N/A 3.6 μg/m3 (15) 15.0
 
April 1, 2020, 4 a.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (15) N/A N/A 4.3 μg/m3 (18) 18.0
 
April 1, 2020, 3 a.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (17) N/A N/A 3.0 μg/m3 (12) 17.0
 
April 1, 2020, 2 a.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (25) N/A N/A 1.4 μg/m3 (6) 25.0
 
April 1, 2020, 1 a.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A N/A 1.3 μg/m3 (5) 28.0
 
April 1, 2020, midnight N/A N/A N/A N/A N/A N/A 41.0 ppb (32) N/A N/A 0.9 μg/m3 (4) 32.0
 
March 31, 2020, 11 p.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (32) N/A N/A 1.0 μg/m3 (4) 32.0
 
March 31, 2020, 10 p.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (29) N/A N/A 2.2 μg/m3 (9) 29.0
 
March 31, 2020, 9 p.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) N/A N/A 4.0 μg/m3 (17) 26.0
 
March 31, 2020, 8 p.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) N/A N/A 4.8 μg/m3 (20) 23.0
 
March 31, 2020, 7 p.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) N/A N/A 3.7 μg/m3 (15) 24.0
 
March 31, 2020, 6 p.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) N/A N/A 2.7 μg/m3 (11) 25.0
 
March 31, 2020, 5 p.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) N/A N/A 2.1 μg/m3 (9) 25.0
 
March 31, 2020, 4 p.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (22) N/A N/A 1.7 μg/m3 (7) 22.0
 
March 31, 2020, 3 p.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (16) N/A N/A 1.1 μg/m3 (5) 16.0
 
March 31, 2020, 2 p.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (18) N/A N/A 1.1 μg/m3 (5) 18.0
 
March 31, 2020, 1 p.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (22) N/A N/A 0.9 μg/m3 (4) 22.0
 
March 31, 2020, noon N/A N/A N/A N/A N/A N/A 27.0 ppb (21) N/A N/A 0.9 μg/m3 (4) 21.0
 
March 31, 2020, 11 a.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (20) N/A N/A 1.6 μg/m3 (7) 20.0
 
March 31, 2020, 10 a.m. N/A N/A N/A N/A N/A N/A 18.0 ppb (14) N/A N/A 1.8 μg/m3 (8) 14.0
 
March 31, 2020, 9 a.m. N/A N/A N/A N/A N/A N/A 17.0 ppb (13) N/A N/A 2.4 μg/m3 (10) 13.0
 
March 31, 2020, 8 a.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (21) N/A N/A 1.9 μg/m3 (8) 21.0
 
March 31, 2020, 7 a.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (22) N/A N/A 2.1 μg/m3 (9) 22.0
 
March 31, 2020, 6 a.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (21) N/A N/A 2.7 μg/m3 (11) 21.0
 
March 31, 2020, 5 a.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (22) N/A N/A 2.6 μg/m3 (11) 22.0
 
March 31, 2020, 4 a.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) N/A N/A 2.5 μg/m3 (10) 24.0
 
March 31, 2020, 3 a.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (25) N/A N/A 2.3 μg/m3 (10) 25.0
 
March 31, 2020, 2 a.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) N/A N/A 1.7 μg/m3 (7) 28.0
 
March 31, 2020, 1 a.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (30) N/A N/A 1.2 μg/m3 (5) 30.0
 
March 31, 2020, midnight N/A N/A N/A N/A N/A N/A 39.0 ppb (30) N/A N/A 1.0 μg/m3 (4) 30.0
 
March 30, 2020, 11 p.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (30) N/A N/A 0.7 μg/m3 (3) 30.0
 
March 30, 2020, 10 p.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (29) N/A N/A 0.9 μg/m3 (4) 29.0
 
March 30, 2020, 9 p.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) N/A N/A 0.6 μg/m3 (2) 28.0
 
March 30, 2020, 8 p.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) N/A N/A 0.9 μg/m3 (4) 27.0
 
March 30, 2020, 7 p.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) N/A N/A 1.3 μg/m3 (5) 26.0
 
March 30, 2020, 6 p.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) N/A N/A 0.7 μg/m3 (3) 27.0
 
March 30, 2020, 5 p.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) N/A N/A 0.7 μg/m3 (3) 24.0
 
March 30, 2020, 4 p.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) N/A N/A 1.3 μg/m3 (5) 23.0