AQSQID: 391510020

Site Name: Canton

Location: Canton (5th St Neast), OH

Reporting: True, Located: True

Current AQI: 59.0

Canton (5th St Neast) OH, US: 40.800797, -81.372853

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
March 24, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A N/A 0.7 ppb (8) N/A 16.2 μg/m3 (59) 59.0
 
March 24, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A N/A 0.6 ppb (7) N/A 14.2 μg/m3 (55) 55.0
 
March 24, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A N/A 0.6 ppb (7) N/A 13.5 μg/m3 (53) 53.0
 
March 24, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A N/A 0.5 ppb (6) N/A 12.7 μg/m3 (51) 51.0
 
March 24, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A N/A 0.6 ppb (7) N/A 17.4 μg/m3 (61) 61.0
 
March 24, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A N/A 0.5 ppb (6) N/A 18.5 μg/m3 (64) 64.0
 
March 24, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A N/A 0.4 ppb (4) N/A 10.5 μg/m3 (44) 44.0
 
March 24, 2019, midnight N/A N/A N/A N/A N/A N/A N/A 0.3 ppb (3) N/A 8.4 μg/m3 (35) 35.0
 
March 23, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A N/A 0.2 ppb (2) N/A 5.5 μg/m3 (23) 23.0
 
March 23, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A N/A 0.1 ppb (1) N/A 5.1 μg/m3 (21) 21.0
 
March 23, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A N/A 0.1 ppb (1) N/A 4.4 μg/m3 (18) 18.0
 
March 23, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A N/A 0.1 ppb (1) N/A 4.2 μg/m3 (18) 18.0
 
March 23, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A N/A 0.1 ppb (1) N/A 4.5 μg/m3 (19) 19.0
 
March 23, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A N/A 0.1 ppb (1) N/A 4.6 μg/m3 (19) 19.0
 
March 23, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A N/A 0.1 ppb (1) N/A 4.9 μg/m3 (20) 20.0
 
March 23, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A N/A 0.1 ppb (1) N/A 6.3 μg/m3 (26) 26.0
 
March 23, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A N/A 0.1 ppb (1) N/A 6.7 μg/m3 (28) 28.0
 
March 23, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A N/A 0.1 ppb (1) N/A 6.6 μg/m3 (28) 28.0
 
March 23, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A N/A 0.1 ppb (1) N/A 4.1 μg/m3 (17) 17.0
 
March 23, 2019, noon N/A N/A N/A N/A N/A N/A N/A 0.2 ppb (2) N/A 4.3 μg/m3 (18) 18.0
 
March 23, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A N/A 0.2 ppb (2) N/A 4.8 μg/m3 (20) 20.0
 
March 23, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A N/A 0.2 ppb (2) N/A 4.6 μg/m3 (19) 19.0
 
March 23, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A N/A 0.2 ppb (2) N/A 3.9 μg/m3 (16) 16.0
 
March 23, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A N/A 0.1 ppb (1) N/A 3.3 μg/m3 (14) 14.0
 
March 23, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A N/A 0.2 ppb (2) N/A 3.0 μg/m3 (12) 12.0
 
March 23, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A N/A 0.1 ppb (1) N/A 2.8 μg/m3 (12) 12.0
 
March 23, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A N/A 0.1 ppb (1) N/A 2.8 μg/m3 (12) 12.0
 
March 23, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A N/A 0.1 ppb (1) N/A 3.1 μg/m3 (13) 13.0
 
March 23, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A N/A 0.1 ppb (1) N/A 3.3 μg/m3 (14) 14.0
 
March 23, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A N/A 0.1 ppb (1) N/A 3.5 μg/m3 (15) 15.0
 
March 23, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A N/A 0.1 ppb (1) N/A 2.6 μg/m3 (11) 11.0
 
March 23, 2019, midnight N/A N/A N/A N/A N/A N/A N/A 0.1 ppb (1) N/A 1.8 μg/m3 (8) 8.0
 
March 22, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A N/A 0.1 ppb (1) N/A 1.2 μg/m3 (5) 5.0
 
March 22, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A N/A 0.1 ppb (1) N/A 1.1 μg/m3 (5) 5.0
 
March 22, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A N/A 0.1 ppb (1) N/A 1.0 μg/m3 (4) 4.0
 
March 22, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A N/A 0.1 ppb (1) N/A 0.9 μg/m3 (4) 4.0
 
March 22, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A N/A 0.1 ppb (1) N/A 1.2 μg/m3 (5) 5.0
 
March 22, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A N/A 0.1 ppb (1) N/A 1.7 μg/m3 (7) 7.0
 
March 22, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A N/A 0.2 ppb (2) N/A 3.6 μg/m3 (15) 15.0
 
March 22, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A N/A 0.2 ppb (2) N/A 6.8 μg/m3 (28) 28.0
 
March 22, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A N/A 0.2 ppb (2) N/A 9.9 μg/m3 (41) 41.0
 
March 22, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A N/A 0.3 ppb (3) N/A 15.2 μg/m3 (57) 57.0
 
March 22, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A N/A 0.3 ppb (3) N/A 16.9 μg/m3 (60) 60.0
 
March 22, 2019, noon N/A N/A N/A N/A N/A N/A N/A 0.2 ppb (2) N/A 14.4 μg/m3 (55) 55.0
 
March 22, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A N/A 0.2 ppb (2) N/A 12.2 μg/m3 (50) 50.0
 
March 22, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A N/A 0.2 ppb (2) N/A 9.1 μg/m3 (38) 38.0
 
March 22, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A N/A 0.2 ppb (2) N/A 7.0 μg/m3 (29) 29.0
 
March 22, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A N/A 0.2 ppb (2) N/A 8.0 μg/m3 (33) 33.0
 
March 22, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A N/A 0.2 ppb (2) N/A 11.7 μg/m3 (49) 49.0
 
March 22, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A N/A 0.2 ppb (2) N/A 10.5 μg/m3 (44) 44.0
 
March 22, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A N/A 0.2 ppb (2) N/A 11.2 μg/m3 (47) 47.0
 
March 22, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A N/A 0.2 ppb (2) N/A 15.2 μg/m3 (57) 57.0
 
March 22, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A N/A 0.2 ppb (2) N/A 18.5 μg/m3 (64) 64.0
 
March 22, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A N/A 0.2 ppb (2) N/A 13.7 μg/m3 (54) 54.0
 
March 22, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A N/A 0.2 ppb (2) N/A 12.9 μg/m3 (52) 52.0
 
March 22, 2019, midnight N/A N/A N/A N/A N/A N/A N/A 0.2 ppb (2) N/A 13.3 μg/m3 (53) 53.0
 
March 21, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A N/A 0.2 ppb (2) N/A 12.9 μg/m3 (52) 52.0
 
March 21, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A N/A 0.2 ppb (2) N/A 18.9 μg/m3 (65) 65.0
 
March 21, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A N/A 0.2 ppb (2) N/A 16.9 μg/m3 (60) 60.0
 
March 21, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A N/A 0.3 ppb (3) N/A 14.4 μg/m3 (55) 55.0
 
March 21, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 14.8 μg/m3 (56) 56.0
 
March 21, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 16.2 μg/m3 (59) 59.0
 
March 21, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 17.8 μg/m3 (62) 62.0
 
March 21, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A N/A 0.5 ppb (6) N/A 17.8 μg/m3 (62) 62.0
 
March 21, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A N/A 0.5 ppb (6) N/A 17.9 μg/m3 (63) 63.0
 
March 21, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A N/A 0.5 ppb (6) N/A 18.8 μg/m3 (64) 64.0
 
March 21, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A N/A 0.5 ppb (6) N/A 16.9 μg/m3 (60) 60.0
 
March 21, 2019, noon N/A N/A N/A N/A N/A N/A N/A 0.5 ppb (6) N/A 17.0 μg/m3 (61) 61.0
 
March 21, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A N/A 0.5 ppb (6) N/A 22.7 μg/m3 (73) 73.0
 
March 21, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A N/A 0.5 ppb (6) N/A 14.1 μg/m3 (54) 54.0
 
March 21, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A N/A 0.4 ppb (4) N/A 16.4 μg/m3 (59) 59.0
 
March 21, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A N/A 0.5 ppb (6) N/A 13.5 μg/m3 (53) 53.0
 
March 21, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A N/A 0.4 ppb (4) N/A 14.5 μg/m3 (55) 55.0
 
March 21, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A N/A 0.4 ppb (4) N/A 9.4 μg/m3 (39) 39.0
 
March 21, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A N/A 0.4 ppb (4) N/A 8.9 μg/m3 (37) 37.0
 
March 21, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A N/A 0.4 ppb (4) N/A 9.8 μg/m3 (41) 41.0
 
March 21, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A N/A 0.4 ppb (4) N/A 9.1 μg/m3 (38) 38.0
 
March 21, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A N/A 0.4 ppb (4) N/A 8.1 μg/m3 (34) 34.0
 
March 21, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A N/A 0.4 ppb (4) N/A 6.7 μg/m3 (28) 28.0
 
March 21, 2019, midnight N/A N/A N/A N/A N/A N/A N/A 0.4 ppb (4) N/A 6.0 μg/m3 (25) 25.0
 
March 20, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A N/A 0.4 ppb (4) N/A 5.8 μg/m3 (24) 24.0
 
March 20, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A N/A 0.4 ppb (4) N/A 4.8 μg/m3 (20) 20.0
 
March 20, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A N/A 0.3 ppb (3) N/A 4.3 μg/m3 (18) 18.0
 
March 20, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A N/A 0.4 ppb (4) N/A 4.7 μg/m3 (20) 20.0
 
March 20, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A N/A 0.3 ppb (3) N/A 5.6 μg/m3 (23) 23.0
 
March 20, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A N/A 0.3 ppb (3) N/A 5.8 μg/m3 (24) 24.0
 
March 20, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A N/A 0.3 ppb (3) N/A 5.6 μg/m3 (23) 23.0
 
March 20, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A N/A 0.3 ppb (3) N/A 5.4 μg/m3 (23) 23.0
 
March 20, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A N/A 0.3 ppb (3) N/A N/A 3.0
 
March 20, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A N/A 0.4 ppb (4) N/A N/A 4.0
 
March 20, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A N/A 0.4 ppb (4) N/A 13.1 μg/m3 (52) 52.0
 
March 20, 2019, noon N/A N/A N/A N/A N/A N/A N/A 0.8 ppb (9) N/A 18.9 μg/m3 (65) 65.0
 
March 20, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A N/A 0.7 ppb (8) N/A 16.5 μg/m3 (60) 60.0
 
March 20, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A N/A 0.6 ppb (7) N/A 15.1 μg/m3 (57) 57.0
 
March 20, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A N/A 0.6 ppb (7) N/A 15.4 μg/m3 (57) 57.0
 
March 20, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A N/A 0.7 ppb (8) N/A 17.1 μg/m3 (61) 61.0
 
March 20, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A N/A 0.7 ppb (8) N/A 16.1 μg/m3 (59) 59.0
 
March 20, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A N/A 0.7 ppb (8) N/A 17.1 μg/m3 (61) 61.0
 
March 20, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A N/A 0.8 ppb (9) N/A 23.2 μg/m3 (74) 74.0
 
March 20, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A N/A 0.8 ppb (9) N/A 20.6 μg/m3 (68) 68.0
 
March 20, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A N/A 0.7 ppb (8) N/A 21.8 μg/m3 (71) 71.0
 
March 20, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A N/A 0.5 ppb (6) N/A 16.9 μg/m3 (60) 60.0
 
March 20, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A N/A 0.6 ppb (7) N/A 14.5 μg/m3 (55) 55.0
 
March 20, 2019, midnight N/A N/A N/A N/A N/A N/A N/A 0.4 ppb (4) N/A 10.5 μg/m3 (44) 44.0
 
March 19, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A N/A 0.3 ppb (3) N/A 8.2 μg/m3 (34) 34.0
 
March 19, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A N/A 0.3 ppb (3) N/A 9.1 μg/m3 (38) 38.0
 
March 19, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A N/A 0.3 ppb (3) N/A 10.7 μg/m3 (45) 45.0
 
March 19, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A N/A 0.3 ppb (3) N/A 11.7 μg/m3 (49) 49.0
 
March 19, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A N/A 0.3 ppb (3) N/A 11.9 μg/m3 (50) 50.0
 
March 19, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A N/A 0.3 ppb (3) N/A 12.9 μg/m3 (52) 52.0
 
March 19, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A N/A 0.3 ppb (3) N/A 13.4 μg/m3 (53) 53.0
 
March 19, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A N/A 0.3 ppb (3) N/A 12.4 μg/m3 (51) 51.0
 
March 19, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A N/A 0.3 ppb (3) N/A 12.0 μg/m3 (50) 50.0
 
March 19, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A N/A 0.4 ppb (4) N/A 13.7 μg/m3 (54) 54.0
 
March 19, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A N/A 0.5 ppb (6) N/A 25.2 μg/m3 (78) 78.0
 
March 19, 2019, noon N/A N/A N/A N/A N/A N/A N/A 0.8 ppb (9) N/A 28.0 μg/m3 (84) 84.0
 
March 19, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A N/A 0.8 ppb (9) N/A 14.3 μg/m3 (55) 55.0
 
March 19, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A N/A 0.7 ppb (8) N/A 17.9 μg/m3 (63) 63.0
 
March 19, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A N/A 0.6 ppb (7) N/A 20.0 μg/m3 (67) 67.0
 
March 19, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A N/A 0.6 ppb (7) N/A 20.1 μg/m3 (67) 67.0
 
March 19, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A N/A 0.6 ppb (7) N/A 22.4 μg/m3 (72) 72.0
 
March 19, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A N/A 0.6 ppb (7) N/A 24.4 μg/m3 (76) 76.0
 
March 19, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A N/A 0.6 ppb (7) N/A 21.1 μg/m3 (69) 69.0
 
March 19, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A N/A 0.4 ppb (4) N/A 16.0 μg/m3 (59) 59.0
 
March 19, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A N/A 0.4 ppb (4) N/A 17.0 μg/m3 (61) 61.0
 
March 19, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A N/A 0.5 ppb (6) N/A 16.5 μg/m3 (60) 60.0
 
March 19, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A N/A 0.4 ppb (4) N/A 15.6 μg/m3 (58) 58.0
 
March 19, 2019, midnight N/A N/A N/A N/A N/A N/A N/A 0.3 ppb (3) N/A 10.9 μg/m3 (45) 45.0
 
March 18, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A N/A 0.4 ppb (4) N/A 8.4 μg/m3 (35) 35.0
 
March 18, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A N/A 0.3 ppb (3) N/A 9.2 μg/m3 (38) 38.0
 
March 18, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A N/A 0.3 ppb (3) N/A 11.0 μg/m3 (46) 46.0
 
March 18, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A N/A 0.3 ppb (3) N/A 11.4 μg/m3 (48) 48.0
 
March 18, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A N/A 0.3 ppb (3) N/A 12.3 μg/m3 (51) 51.0
 
March 18, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A N/A 0.3 ppb (3) N/A 11.1 μg/m3 (46) 46.0
 
March 18, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A N/A 0.3 ppb (3) N/A 10.7 μg/m3 (45) 45.0
 
March 18, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A N/A 0.3 ppb (3) N/A 11.1 μg/m3 (46) 46.0
 
March 18, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A N/A 0.3 ppb (3) N/A 9.9 μg/m3 (41) 41.0
 
March 18, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A N/A 0.3 ppb (3) N/A 8.7 μg/m3 (36) 36.0
 
March 18, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A N/A 0.3 ppb (3) N/A 11.4 μg/m3 (48) 48.0
 
March 18, 2019, noon N/A N/A N/A N/A N/A N/A N/A 0.4 ppb (4) N/A 16.2 μg/m3 (59) 59.0
 
March 18, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A N/A 0.4 ppb (4) N/A 15.7 μg/m3 (58) 58.0
 
March 18, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A N/A 0.4 ppb (4) N/A 13.4 μg/m3 (53) 53.0
 
March 18, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A N/A 0.4 ppb (4) N/A 12.9 μg/m3 (52) 52.0
 
March 18, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A N/A 0.3 ppb (3) N/A 10.7 μg/m3 (45) 45.0
 
March 18, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A N/A 0.3 ppb (3) N/A 8.1 μg/m3 (34) 34.0
 
March 18, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A N/A 0.3 ppb (3) N/A 7.9 μg/m3 (33) 33.0
 
March 18, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A N/A 0.3 ppb (3) N/A 7.9 μg/m3 (33) 33.0
 
March 18, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A N/A 0.3 ppb (3) N/A 7.1 μg/m3 (30) 30.0
 
March 18, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A N/A 0.3 ppb (3) N/A 6.4 μg/m3 (27) 27.0
 
March 18, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A N/A 0.3 ppb (3) N/A 5.5 μg/m3 (23) 23.0
 
March 18, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A N/A 0.3 ppb (3) N/A 5.7 μg/m3 (24) 24.0
 
March 18, 2019, midnight N/A N/A N/A N/A N/A N/A N/A 0.3 ppb (3) N/A 5.3 μg/m3 (22) 22.0
 
March 17, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A N/A 0.3 ppb (3) N/A 4.6 μg/m3 (19) 19.0
 
March 17, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A N/A 0.3 ppb (3) N/A 3.3 μg/m3 (14) 14.0
 
March 17, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A N/A 0.3 ppb (3) N/A 2.7 μg/m3 (11) 11.0
 
March 17, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A N/A 0.2 ppb (2) N/A 2.9 μg/m3 (12) 12.0
 
March 17, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A N/A 0.2 ppb (2) N/A 2.7 μg/m3 (11) 11.0
 
March 17, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A N/A 0.2 ppb (2) N/A 2.5 μg/m3 (10) 10.0
 
March 17, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A N/A 0.2 ppb (2) N/A 2.5 μg/m3 (10) 10.0
 
March 17, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A N/A 0.2 ppb (2) N/A 2.9 μg/m3 (12) 12.0
 
March 17, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A N/A 0.2 ppb (2) N/A 3.2 μg/m3 (13) 13.0
 
March 17, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A N/A 0.3 ppb (3) N/A 3.1 μg/m3 (13) 13.0
 
March 17, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A N/A 0.3 ppb (3) N/A 2.8 μg/m3 (12) 12.0
 
March 17, 2019, noon N/A N/A N/A N/A N/A N/A N/A 0.3 ppb (3) N/A 3.4 μg/m3 (14) 14.0
 
March 17, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A N/A 0.4 ppb (4) N/A 3.8 μg/m3 (16) 16.0
 
March 17, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A N/A 0.3 ppb (3) N/A 3.8 μg/m3 (16) 16.0
 
March 17, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A N/A 0.3 ppb (3) N/A 4.7 μg/m3 (20) 20.0
 
March 17, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A N/A 0.3 ppb (3) N/A 4.6 μg/m3 (19) 19.0