ID: 1994

AQSQID: 000100127

Site Name: Surrey East

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

Updated: April 21, 2021, 7:45 p.m.

Location: Surrey (72 Ave), CC

Reporting: True, Located: True

Current AQI: 55.0

Surrey (72 Ave) CC, CA: 49.13278, -122.69417

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
April 21, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (31) N/A N/A 13.7 μg/m3 (55) 55.0
 
April 21, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (28) N/A N/A 11.0 μg/m3 (46) 46.0
 
April 21, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (27) N/A N/A 7.5 μg/m3 (32) 32.0
 
April 21, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (22) N/A N/A 8.3 μg/m3 (35) 35.0
 
April 21, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (25) N/A N/A 7.5 μg/m3 (32) 32.0
 
April 21, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 12.0 ppb (12) N/A N/A 11.7 μg/m3 (49) 49.0
 
April 21, 2021, noon N/A N/A N/A N/A N/A N/A 19.0 ppb (18) N/A N/A 12.9 μg/m3 (53) 53.0
 
April 21, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (28) N/A N/A 13.8 μg/m3 (55) 55.0
 
April 21, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (25) N/A N/A 18.4 μg/m3 (65) 65.0
 
April 21, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (24) N/A N/A 15.4 μg/m3 (58) 58.0
 
April 21, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (23) N/A N/A 12.4 μg/m3 (52) 52.0
 
April 21, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (26) N/A N/A 11.3 μg/m3 (48) 48.0
 
April 21, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (25) N/A N/A 12.6 μg/m3 (53) 53.0
 
April 21, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (26) N/A N/A 13.9 μg/m3 (55) 55.0
 
April 21, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (29) N/A N/A 9.4 μg/m3 (40) 40.0
 
April 21, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (38) N/A N/A 10.1 μg/m3 (43) 43.0
 
April 21, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (43) N/A N/A 7.3 μg/m3 (31) 43.0
 
April 21, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (44) N/A N/A 8.2 μg/m3 (35) 44.0
 
April 21, 2021, midnight N/A N/A N/A N/A N/A N/A 51.0 ppb (48) N/A N/A 9.3 μg/m3 (39) 48.0
 
April 20, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (43) N/A N/A 14.7 μg/m3 (57) 57.0
 
April 20, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 51.0 ppb (48) N/A N/A 7.6 μg/m3 (32) 48.0
 
April 20, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 50.0 ppb (47) N/A N/A 6.2 μg/m3 (26) 47.0
 
April 20, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (42) N/A N/A 7.8 μg/m3 (33) 42.0
 
April 20, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (38) N/A N/A 7.5 μg/m3 (32) 38.0
 
April 20, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (35) N/A N/A 8.7 μg/m3 (37) 37.0
 
April 20, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (28) N/A N/A 9.8 μg/m3 (41) 41.0
 
April 20, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (25) N/A N/A 7.3 μg/m3 (31) 31.0
 
April 20, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (24) N/A N/A 17.1 μg/m3 (62) 62.0
 
April 20, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (23) N/A N/A 6.7 μg/m3 (28) 28.0
 
April 20, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 12.0 ppb (12) N/A N/A 5.2 μg/m3 (22) 22.0
 
April 20, 2021, noon N/A N/A N/A N/A N/A N/A 19.0 ppb (18) N/A N/A 4.5 μg/m3 (19) 19.0
 
April 20, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (25) N/A N/A 4.8 μg/m3 (20) 25.0
 
April 20, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (27) N/A N/A 5.0 μg/m3 (21) 27.0
 
April 20, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (29) N/A N/A 4.4 μg/m3 (19) 29.0
 
April 20, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (25) N/A N/A 8.7 μg/m3 (37) 37.0
 
April 20, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (26) N/A N/A 6.6 μg/m3 (28) 28.0
 
April 20, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (31) N/A N/A 4.4 μg/m3 (19) 31.0
 
April 20, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (30) N/A N/A 5.0 μg/m3 (21) 30.0
 
April 20, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (38) N/A N/A 6.2 μg/m3 (26) 38.0
 
April 20, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (44) N/A N/A 4.6 μg/m3 (20) 44.0
 
April 20, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (42) N/A N/A 4.6 μg/m3 (20) 42.0
 
April 20, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (41) N/A N/A 5.6 μg/m3 (24) 41.0
 
April 20, 2021, midnight N/A N/A N/A N/A N/A N/A 48.0 ppb (45) N/A N/A 5.1 μg/m3 (22) 45.0
 
April 19, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 50.0 ppb (47) N/A N/A 3.4 μg/m3 (15) 47.0
 
April 19, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 52.0 ppb (49) N/A N/A 2.3 μg/m3 (10) 49.0
 
April 19, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 50.0 ppb (47) N/A N/A 2.4 μg/m3 (10) 47.0
 
April 19, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 50.0 ppb (47) N/A N/A 2.2 μg/m3 (10) 47.0
 
April 19, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (46) N/A N/A 2.0 μg/m3 (9) 46.0
 
April 19, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (45) N/A N/A 1.9 μg/m3 (8) 45.0
 
April 19, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (44) N/A N/A 1.7 μg/m3 (8) 44.0
 
April 19, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (42) N/A N/A 1.7 μg/m3 (8) 42.0
 
April 19, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (35) N/A N/A 1.7 μg/m3 (8) 35.0
 
April 19, 2021, noon N/A N/A N/A N/A N/A N/A 41.0 ppb (38) N/A N/A 1.1 μg/m3 (5) 38.0
 
April 19, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (39) N/A N/A 1.0 μg/m3 (5) 39.0
 
April 19, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (39) N/A N/A 1.1 μg/m3 (5) 39.0
 
April 19, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (39) N/A N/A 1.0 μg/m3 (5) 39.0
 
April 19, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (41) N/A N/A 1.2 μg/m3 (5) 41.0
 
April 19, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (38) N/A N/A 3.0 μg/m3 (13) 38.0
 
April 19, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (33) N/A N/A 10.1 μg/m3 (43) 43.0
 
April 19, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (25) N/A N/A 10.7 μg/m3 (45) 45.0
 
April 19, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (19) N/A N/A 12.1 μg/m3 (51) 51.0
 
April 19, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (33) N/A N/A 8.0 μg/m3 (34) 34.0
 
April 19, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (40) N/A N/A 6.3 μg/m3 (27) 40.0
 
April 19, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 50.0 ppb (47) N/A N/A 8.3 μg/m3 (35) 47.0
 
April 19, 2021, midnight N/A N/A N/A N/A N/A N/A 51.0 ppb (48) N/A N/A 8.5 μg/m3 (36) 48.0
 
April 18, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 55.0 ppb (51) N/A N/A 9.5 μg/m3 (40) 51.0
 
April 18, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 58.0 ppb (61) N/A N/A 10.6 μg/m3 (45) 61.0
 
April 18, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 55.0 ppb (51) N/A N/A 11.6 μg/m3 (49) 51.0
 
April 18, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 53.0 ppb (50) N/A N/A 15.1 μg/m3 (58) 58.0
 
April 18, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (44) N/A N/A 14.1 μg/m3 (56) 56.0
 
April 18, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (40) N/A N/A 10.4 μg/m3 (44) 44.0
 
April 18, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (37) N/A N/A 8.8 μg/m3 (37) 37.0
 
April 18, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (26) N/A N/A 18.7 μg/m3 (65) 65.0
 
April 18, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (25) N/A N/A 11.6 μg/m3 (49) 49.0
 
April 18, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (23) N/A N/A 10.4 μg/m3 (44) 44.0
 
April 18, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (25) N/A N/A 7.2 μg/m3 (31) 31.0
 
April 18, 2021, noon N/A N/A N/A N/A N/A N/A 26.0 ppb (25) N/A N/A 11.8 μg/m3 (50) 50.0
 
April 18, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (19) N/A N/A 13.1 μg/m3 (54) 54.0
 
April 18, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (23) N/A N/A 17.2 μg/m3 (62) 62.0
 
April 18, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (23) N/A N/A 18.3 μg/m3 (65) 65.0
 
April 18, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (19) N/A N/A 19.2 μg/m3 (66) 66.0
 
April 18, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (21) N/A N/A 19.6 μg/m3 (67) 67.0
 
April 18, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (27) N/A N/A 12.8 μg/m3 (53) 53.0
 
April 18, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (25) N/A N/A 14.7 μg/m3 (57) 57.0
 
April 18, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (26) N/A N/A 13.8 μg/m3 (55) 55.0
 
April 18, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (26) N/A N/A 9.2 μg/m3 (39) 39.0
 
April 18, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (33) N/A N/A 8.2 μg/m3 (35) 35.0
 
April 18, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (40) N/A N/A 7.6 μg/m3 (32) 40.0
 
April 18, 2021, midnight N/A N/A N/A N/A N/A N/A 50.0 ppb (47) N/A N/A 5.8 μg/m3 (25) 47.0
 
April 17, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 51.0 ppb (48) N/A N/A 7.4 μg/m3 (31) 48.0
 
April 17, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 51.0 ppb (48) N/A N/A 7.9 μg/m3 (33) 48.0
 
April 17, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 52.0 ppb (49) N/A N/A 9.8 μg/m3 (41) 49.0
 
April 17, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (46) N/A N/A 12.3 μg/m3 (52) 52.0
 
April 17, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (41) N/A N/A 14.8 μg/m3 (57) 57.0
 
April 17, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (36) N/A N/A 10.2 μg/m3 (43) 43.0
 
April 17, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (33) N/A N/A 5.8 μg/m3 (25) 33.0
 
April 17, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (28) N/A N/A 4.4 μg/m3 (19) 28.0
 
April 17, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (22) N/A N/A 5.1 μg/m3 (22) 22.0
 
April 17, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (21) N/A N/A 6.2 μg/m3 (26) 26.0
 
April 17, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (22) N/A N/A 4.3 μg/m3 (18) 22.0
 
April 17, 2021, noon N/A N/A N/A N/A N/A N/A 27.0 ppb (25) N/A N/A 3.5 μg/m3 (15) 25.0
 
April 17, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (26) N/A N/A 4.1 μg/m3 (18) 26.0
 
April 17, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (28) N/A N/A 5.0 μg/m3 (21) 28.0
 
April 17, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (27) N/A N/A 4.8 μg/m3 (20) 27.0
 
April 17, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (25) N/A N/A 7.5 μg/m3 (32) 32.0
 
April 17, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 19.0 ppb (18) N/A N/A 12.9 μg/m3 (53) 53.0
 
April 17, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 17.0 ppb (16) N/A N/A 16.1 μg/m3 (60) 60.0
 
April 17, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 19.0 ppb (18) N/A N/A 17.0 μg/m3 (62) 62.0
 
April 17, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (23) N/A N/A 14.6 μg/m3 (57) 57.0
 
April 17, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (26) N/A N/A 9.6 μg/m3 (40) 40.0
 
April 17, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (33) N/A N/A 8.2 μg/m3 (35) 35.0
 
April 17, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (39) N/A N/A 7.4 μg/m3 (31) 39.0
 
April 17, 2021, midnight N/A N/A N/A N/A N/A N/A 46.0 ppb (43) N/A N/A 6.3 μg/m3 (27) 43.0
 
April 16, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (42) N/A N/A 6.6 μg/m3 (28) 42.0
 
April 16, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (40) N/A N/A 8.7 μg/m3 (37) 40.0
 
April 16, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (37) N/A N/A 14.1 μg/m3 (56) 56.0
 
April 16, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (45) N/A N/A 7.4 μg/m3 (31) 45.0
 
April 16, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (44) N/A N/A 6.2 μg/m3 (26) 44.0
 
April 16, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (36) N/A N/A 9.2 μg/m3 (39) 39.0
 
April 16, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (26) N/A N/A 12.5 μg/m3 (52) 52.0
 
April 16, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 18.0 ppb (17) N/A N/A 11.4 μg/m3 (48) 48.0
 
April 16, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (22) N/A N/A 5.3 μg/m3 (23) 23.0
 
April 16, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 14.0 ppb (13) N/A N/A 6.5 μg/m3 (28) 28.0
 
April 16, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 11.0 ppb (11) N/A N/A 8.2 μg/m3 (35) 35.0
 
April 16, 2021, noon N/A N/A N/A N/A N/A N/A 18.0 ppb (17) N/A N/A 6.2 μg/m3 (26) 26.0
 
April 16, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (29) N/A N/A 4.9 μg/m3 (21) 29.0
 
April 16, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (31) N/A N/A 4.9 μg/m3 (21) 31.0
 
April 16, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (32) N/A N/A 5.4 μg/m3 (23) 32.0
 
April 16, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (25) N/A N/A 8.0 μg/m3 (34) 34.0
 
April 16, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (23) N/A N/A 11.2 μg/m3 (47) 47.0
 
April 16, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (21) N/A N/A 10.9 μg/m3 (46) 46.0
 
April 16, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (25) N/A N/A 10.4 μg/m3 (44) 44.0
 
April 16, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (29) N/A N/A 10.3 μg/m3 (43) 43.0
 
April 16, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (37) N/A N/A 7.5 μg/m3 (32) 37.0
 
April 16, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (41) N/A N/A 5.7 μg/m3 (24) 41.0
 
April 16, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (45) N/A N/A 4.9 μg/m3 (21) 45.0
 
April 16, 2021, midnight N/A N/A N/A N/A N/A N/A 49.0 ppb (46) N/A N/A 4.6 μg/m3 (20) 46.0
 
April 15, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (40) N/A N/A 5.3 μg/m3 (23) 40.0
 
April 15, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (43) N/A N/A 5.9 μg/m3 (25) 43.0
 
April 15, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (39) N/A N/A 7.1 μg/m3 (30) 39.0
 
April 15, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (39) N/A N/A 7.8 μg/m3 (33) 39.0
 
April 15, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (36) N/A N/A 8.4 μg/m3 (36) 36.0
 
April 15, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (36) N/A N/A 7.4 μg/m3 (31) 36.0
 
April 15, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (25) N/A N/A 13.6 μg/m3 (55) 55.0
 
April 15, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (29) N/A N/A 10.3 μg/m3 (43) 43.0
 
April 15, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (22) N/A N/A 4.8 μg/m3 (20) 22.0
 
April 15, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 10.0 ppb (10) N/A N/A 6.5 μg/m3 (28) 28.0
 
April 15, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 18.0 ppb (17) N/A N/A 5.7 μg/m3 (24) 24.0
 
April 15, 2021, noon N/A N/A N/A N/A N/A N/A 19.0 ppb (18) N/A N/A 4.4 μg/m3 (19) 19.0
 
April 15, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (28) N/A N/A 3.7 μg/m3 (16) 28.0
 
April 15, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (33) N/A N/A 3.3 μg/m3 (14) 33.0
 
April 15, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (32) N/A N/A 4.3 μg/m3 (18) 32.0
 
April 15, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (28) N/A N/A 4.9 μg/m3 (21) 28.0
 
April 15, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (28) N/A N/A 4.6 μg/m3 (20) 28.0
 
April 15, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (30) N/A N/A 4.1 μg/m3 (18) 30.0
 
April 15, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (25) N/A N/A 7.4 μg/m3 (31) 31.0
 
April 15, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (24) N/A N/A 8.6 μg/m3 (36) 36.0
 
April 15, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (34) N/A N/A 22.6 μg/m3 (74) 74.0
 
April 15, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (37) N/A N/A 5.9 μg/m3 (25) 37.0
 
April 15, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (39) N/A N/A 6.5 μg/m3 (28) 39.0
 
April 15, 2021, midnight N/A N/A N/A N/A N/A N/A 45.0 ppb (42) N/A N/A 6.2 μg/m3 (26) 42.0
 
April 14, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (42) N/A N/A 5.4 μg/m3 (23) 42.0
 
April 14, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (39) N/A N/A 7.7 μg/m3 (33) 39.0
 
April 14, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (41) N/A N/A 6.3 μg/m3 (27) 41.0
 
April 14, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (41) N/A N/A 5.2 μg/m3 (22) 41.0
 
April 14, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (37) N/A N/A 4.8 μg/m3 (20) 37.0
 
April 14, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (38) N/A N/A 4.2 μg/m3 (18) 38.0
 
April 14, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (35) N/A N/A 3.8 μg/m3 (16) 35.0