AQSQID: 000101101

Site Name: Chilliwack

Location: Chilliwack, CC

Reporting: True, Located: True

Current AQI: 30.0

Chilliwack CC, CA: 49.15611, -121.94056

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
March 23, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 15.0 ppb (12) N/A N/A 7.8 μg/m3 (32) 32.0
 
March 23, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 13.0 ppb (10) N/A N/A 7.1 μg/m3 (30) 30.0
 
March 23, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 17.0 ppb (13) N/A N/A 4.2 μg/m3 (18) 18.0
 
March 23, 2019, noon N/A N/A N/A N/A N/A N/A 22.0 ppb (17) N/A N/A 3.4 μg/m3 (14) 17.0
 
March 23, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) N/A N/A 3.7 μg/m3 (15) 25.0
 
March 23, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (31) N/A N/A 3.5 μg/m3 (15) 31.0
 
March 23, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A N/A 3.5 μg/m3 (15) 28.0
 
March 23, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (32) N/A N/A 2.7 μg/m3 (11) 32.0
 
March 23, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (29) N/A N/A 2.4 μg/m3 (10) 29.0
 
March 23, 2019, 6 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 23, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (31) N/A N/A 0.8 μg/m3 (3) 31.0
 
March 23, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (33) N/A N/A 1.8 μg/m3 (8) 33.0
 
March 23, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (32) N/A N/A 3.5 μg/m3 (15) 32.0
 
March 23, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) N/A N/A 19.4 μg/m3 (66) 66.0
 
March 23, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) N/A N/A 30.9 μg/m3 (90) 90.0
 
March 23, 2019, midnight N/A N/A N/A N/A N/A N/A 41.0 ppb (32) N/A N/A 21.6 μg/m3 (70) 70.0
 
March 22, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (35) N/A N/A 17.3 μg/m3 (61) 61.0
 
March 22, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (34) N/A N/A 20.5 μg/m3 (68) 68.0
 
March 22, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (31) N/A N/A 16.1 μg/m3 (59) 59.0
 
March 22, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) N/A N/A 16.7 μg/m3 (60) 60.0
 
March 22, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) N/A N/A 13.6 μg/m3 (53) 53.0
 
March 22, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (21) N/A N/A 11.5 μg/m3 (48) 48.0
 
March 22, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (17) N/A N/A 11.4 μg/m3 (48) 48.0
 
March 22, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 10.0 ppb (8) N/A N/A 19.7 μg/m3 (66) 66.0
 
March 22, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (2) N/A N/A 16.1 μg/m3 (59) 59.0
 
March 22, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 2.0 ppb (2) N/A N/A 15.1 μg/m3 (57) 57.0
 
March 22, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 2.0 ppb (2) N/A N/A 15.8 μg/m3 (58) 58.0
 
March 22, 2019, noon N/A N/A N/A N/A N/A N/A 2.0 ppb (2) N/A N/A 20.6 μg/m3 (68) 68.0
 
March 22, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 2.0 ppb (2) N/A N/A 21.4 μg/m3 (70) 70.0
 
March 22, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A 2.0 ppb (2) N/A N/A 22.8 μg/m3 (73) 73.0
 
March 22, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A 2.0 ppb (2) N/A N/A 23.7 μg/m3 (75) 75.0
 
March 22, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 7.0 ppb (5) N/A N/A 22.7 μg/m3 (73) 73.0
 
March 22, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 15.0 ppb (12) N/A N/A 23.0 μg/m3 (73) 73.0
 
March 22, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 10.0 ppb (8) N/A N/A 20.2 μg/m3 (67) 67.0
 
March 22, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 16.0 ppb (12) N/A N/A 20.0 μg/m3 (67) 67.0
 
March 22, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (21) N/A N/A 19.0 μg/m3 (65) 65.0
 
March 22, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) N/A N/A 18.6 μg/m3 (64) 64.0
 
March 22, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) N/A N/A 21.5 μg/m3 (70) 70.0
 
March 22, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) N/A N/A 29.6 μg/m3 (87) 87.0
 
March 22, 2019, midnight N/A N/A N/A N/A N/A N/A 41.0 ppb (32) N/A N/A 31.2 μg/m3 (91) 91.0
 
March 21, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (32) N/A N/A 25.8 μg/m3 (79) 79.0
 
March 21, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (31) N/A N/A 22.2 μg/m3 (72) 72.0
 
March 21, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (32) N/A N/A 14.9 μg/m3 (56) 56.0
 
March 21, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (32) N/A N/A 12.1 μg/m3 (50) 50.0
 
March 21, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (30) N/A N/A 6.7 μg/m3 (28) 30.0
 
March 21, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A N/A 4.3 μg/m3 (18) 28.0
 
March 21, 2019, 5 p.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
 
March 21, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (22) N/A N/A 2.9 μg/m3 (12) 22.0
 
March 21, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 16.0 ppb (12) N/A N/A 2.9 μg/m3 (12) 12.0
 
March 21, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 8.0 ppb (6) N/A N/A 4.5 μg/m3 (19) 19.0
 
March 21, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 7.0 ppb (5) N/A N/A 6.5 μg/m3 (27) 27.0
 
March 21, 2019, noon N/A N/A N/A N/A N/A N/A 12.0 ppb (9) N/A N/A 6.8 μg/m3 (28) 28.0
 
March 21, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 12.0 ppb (9) N/A N/A 11.0 μg/m3 (46) 46.0
 
March 21, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A 11.0 ppb (8) N/A N/A 13.9 μg/m3 (54) 54.0
 
March 21, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A 8.0 ppb (6) N/A N/A 18.9 μg/m3 (65) 65.0
 
March 21, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (2) N/A N/A 28.0 μg/m3 (84) 84.0
 
March 21, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 4.0 ppb (3) N/A N/A 33.7 μg/m3 (96) 96.0
 
March 21, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 9.0 ppb (7) N/A N/A 30.8 μg/m3 (90) 90.0
 
March 21, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (2) N/A N/A 31.8 μg/m3 (92) 92.0
 
March 21, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 6.0 ppb (5) N/A N/A 29.2 μg/m3 (87) 87.0
 
March 21, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (22) N/A N/A 23.5 μg/m3 (74) 74.0
 
March 21, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (17) N/A N/A 52.0 μg/m3 (141) 141.0
 
March 21, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) N/A N/A 14.9 μg/m3 (56) 56.0
 
March 21, 2019, midnight N/A N/A N/A N/A N/A N/A 41.0 ppb (32) N/A N/A 8.0 μg/m3 (33) 33.0
 
March 20, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (34) N/A N/A 6.2 μg/m3 (26) 34.0
 
March 20, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (34) N/A N/A 6.1 μg/m3 (25) 34.0
 
March 20, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (34) N/A N/A 6.8 μg/m3 (28) 34.0
 
March 20, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (33) N/A N/A 7.2 μg/m3 (30) 33.0
 
March 20, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (32) N/A N/A 5.9 μg/m3 (25) 32.0
 
March 20, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (30) N/A N/A 4.8 μg/m3 (20) 30.0
 
March 20, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) N/A N/A 3.6 μg/m3 (15) 28.0
 
March 20, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) N/A N/A 2.6 μg/m3 (11) 27.0
 
March 20, 2019, 3 p.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 20, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (20) N/A N/A 2.6 μg/m3 (11) 20.0
 
March 20, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) N/A N/A 2.0 μg/m3 (8) 24.0
 
March 20, 2019, noon N/A N/A N/A N/A N/A N/A 31.0 ppb (24) N/A N/A 2.0 μg/m3 (8) 24.0
 
March 20, 2019, 11 a.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 20, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) N/A N/A 2.6 μg/m3 (11) 25.0
 
March 20, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) N/A N/A 2.8 μg/m3 (12) 25.0
 
March 20, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (22) N/A N/A 4.5 μg/m3 (19) 22.0
 
March 20, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) N/A N/A 4.9 μg/m3 (20) 25.0
 
March 20, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) N/A N/A 4.4 μg/m3 (18) 25.0
 
March 20, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (21) N/A N/A 6.0 μg/m3 (25) 25.0
 
March 20, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (18) N/A N/A 16.1 μg/m3 (59) 59.0
 
March 20, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (21) N/A N/A 17.6 μg/m3 (62) 62.0
 
March 20, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (32) N/A N/A 17.2 μg/m3 (61) 61.0
 
March 20, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (32) N/A N/A 14.2 μg/m3 (55) 55.0
 
March 20, 2019, midnight N/A N/A N/A N/A N/A N/A 51.0 ppb (39) N/A N/A 10.1 μg/m3 (42) 42.0
 
March 19, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 50.0 ppb (38) N/A N/A 8.7 μg/m3 (36) 38.0
 
March 19, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (38) N/A N/A 9.3 μg/m3 (39) 39.0
 
March 19, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (36) N/A N/A 8.7 μg/m3 (36) 36.0
 
March 19, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (35) N/A N/A 8.9 μg/m3 (37) 37.0
 
March 19, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (35) N/A N/A 6.9 μg/m3 (29) 35.0
 
March 19, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (33) N/A N/A 6.0 μg/m3 (25) 33.0
 
March 19, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (32) N/A N/A 5.3 μg/m3 (22) 32.0
 
March 19, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (30) N/A N/A 3.8 μg/m3 (16) 30.0
 
March 19, 2019, 3 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 19, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (22) N/A N/A 2.8 μg/m3 (12) 22.0
 
March 19, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (22) N/A N/A 3.3 μg/m3 (14) 22.0
 
March 19, 2019, noon N/A N/A N/A N/A N/A N/A 28.0 ppb (22) N/A N/A 4.4 μg/m3 (18) 22.0
 
March 19, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (22) N/A N/A 5.0 μg/m3 (21) 22.0
 
March 19, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (25) N/A N/A 4.4 μg/m3 (18) 25.0
 
March 19, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A N/A 4.5 μg/m3 (19) 28.0
 
March 19, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A N/A 4.3 μg/m3 (18) 28.0
 
March 19, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (22) N/A N/A 3.4 μg/m3 (14) 22.0
 
March 19, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (22) N/A N/A 2.9 μg/m3 (12) 22.0
 
March 19, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) N/A N/A 5.0 μg/m3 (21) 24.0
 
March 19, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (21) N/A N/A 4.6 μg/m3 (19) 21.0
 
March 19, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) N/A N/A 8.3 μg/m3 (35) 35.0
 
March 19, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (32) N/A N/A 7.1 μg/m3 (30) 32.0
 
March 19, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (37) N/A N/A 5.2 μg/m3 (22) 37.0
 
March 19, 2019, midnight N/A N/A N/A N/A N/A N/A 48.0 ppb (37) N/A N/A 5.8 μg/m3 (24) 37.0
 
March 18, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (37) N/A N/A 5.0 μg/m3 (21) 37.0
 
March 18, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (37) N/A N/A 5.1 μg/m3 (21) 37.0
 
March 18, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (35) N/A N/A 7.7 μg/m3 (32) 35.0
 
March 18, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (35) N/A N/A 6.7 μg/m3 (28) 35.0
 
March 18, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (33) N/A N/A N/A 33.0
 
March 18, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (32) N/A N/A N/A 32.0
 
March 18, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (30) N/A N/A 6.7 μg/m3 (28) 30.0
 
March 18, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (29) N/A N/A 5.1 μg/m3 (21) 29.0
 
March 18, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) N/A N/A 2.3 μg/m3 (10) 28.0
 
March 18, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A N/A 2.3 μg/m3 (10) 28.0
 
March 18, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) N/A N/A 2.2 μg/m3 (9) 27.0
 
March 18, 2019, noon N/A N/A N/A N/A N/A N/A 37.0 ppb (28) N/A N/A 2.0 μg/m3 (8) 28.0
 
March 18, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) N/A N/A 2.1 μg/m3 (9) 28.0
 
March 18, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A N/A 1.9 μg/m3 (8) 28.0
 
March 18, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) N/A N/A 2.1 μg/m3 (9) 27.0
 
March 18, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (25) N/A N/A 2.1 μg/m3 (9) 25.0
 
March 18, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (25) N/A N/A 2.6 μg/m3 (11) 25.0
 
March 18, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) N/A N/A 3.9 μg/m3 (16) 23.0
 
March 18, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (18) N/A N/A 6.4 μg/m3 (27) 27.0
 
March 18, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 13.0 ppb (10) N/A N/A 8.4 μg/m3 (35) 35.0
 
March 18, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (15) N/A N/A 11.1 μg/m3 (46) 46.0
 
March 18, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (19) N/A N/A 12.7 μg/m3 (51) 51.0
 
March 18, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (31) N/A N/A 9.1 μg/m3 (38) 38.0
 
March 18, 2019, midnight N/A N/A N/A N/A N/A N/A 42.0 ppb (32) N/A N/A 7.2 μg/m3 (30) 32.0
 
March 17, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (33) N/A N/A 6.5 μg/m3 (27) 33.0
 
March 17, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (32) N/A N/A 8.0 μg/m3 (33) 33.0
 
March 17, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (31) N/A N/A 8.1 μg/m3 (34) 34.0
 
March 17, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) N/A N/A 8.9 μg/m3 (37) 37.0
 
March 17, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A N/A 5.8 μg/m3 (24) 28.0
 
March 17, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (25) N/A N/A 4.4 μg/m3 (18) 25.0
 
March 17, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (22) N/A N/A 3.3 μg/m3 (14) 22.0
 
March 17, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 19.0 ppb (15) N/A N/A 3.8 μg/m3 (16) 16.0
 
March 17, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (15) N/A N/A 3.5 μg/m3 (15) 15.0
 
March 17, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (15) N/A N/A 3.9 μg/m3 (16) 16.0
 
March 17, 2019, noon N/A N/A N/A N/A N/A N/A 18.0 ppb (14) N/A N/A 4.8 μg/m3 (20) 20.0
 
March 17, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 11.0 ppb (8) N/A N/A 10.1 μg/m3 (42) 42.0
 
March 17, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A 4.0 ppb (3) N/A N/A 15.0 μg/m3 (56) 56.0
 
March 17, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A 6.0 ppb (5) N/A N/A 11.5 μg/m3 (48) 48.0
 
March 17, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (2) N/A N/A 12.5 μg/m3 (51) 51.0
 
March 17, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 12.0 ppb (9) N/A N/A 9.5 μg/m3 (40) 40.0
 
March 17, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 16.0 ppb (12) N/A N/A 9.0 μg/m3 (38) 38.0
 
March 17, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (15) N/A N/A 13.1 μg/m3 (52) 52.0
 
March 17, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 19.0 ppb (15) N/A N/A 24.3 μg/m3 (76) 76.0
 
March 17, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (18) N/A N/A 27.8 μg/m3 (84) 84.0
 
March 17, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (19) N/A N/A 36.1 μg/m3 (102) 102.0
 
March 17, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) N/A N/A 30.7 μg/m3 (90) 90.0
 
March 17, 2019, midnight N/A N/A N/A N/A N/A N/A 40.0 ppb (31) N/A N/A 24.3 μg/m3 (76) 76.0
 
March 16, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (34) N/A N/A 14.0 μg/m3 (54) 54.0
 
March 16, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (33) N/A N/A 8.4 μg/m3 (35) 35.0
 
March 16, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (32) N/A N/A 7.9 μg/m3 (33) 33.0
 
March 16, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (29) N/A N/A 8.6 μg/m3 (36) 36.0
 
March 16, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) N/A N/A 7.6 μg/m3 (32) 32.0
 
March 16, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) N/A N/A 6.8 μg/m3 (28) 28.0
 
March 16, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (18) N/A N/A 4.5 μg/m3 (19) 19.0
 
March 16, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (15) N/A N/A 4.1 μg/m3 (17) 17.0
 
March 16, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 16.0 ppb (12) N/A N/A 3.0 μg/m3 (12) 12.0