AQSQID: 171971011

Site Name: Braidwd

Location: Will Co, IL

Reporting: True, Located: True

Current AQI: 38.0

Will Co IL, US: 41.2222, -88.1906

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
March 23, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (38) N/A N/A 4.1 μg/m3 (17) 38.0
 
March 23, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (38) N/A N/A 3.7 μg/m3 (15) 38.0
 
March 23, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 50.0 ppb (38) N/A N/A 2.6 μg/m3 (11) 38.0
 
March 23, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (37) N/A N/A 0.6 μg/m3 (2) 37.0
 
March 23, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (35) N/A N/A 2.6 μg/m3 (11) 35.0
 
March 23, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (35) N/A N/A 2.3 μg/m3 (10) 35.0
 
March 23, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (30) N/A N/A 5.1 μg/m3 (21) 30.0
 
March 23, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (31) N/A N/A 3.6 μg/m3 (15) 31.0
 
March 23, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) N/A N/A 13.6 μg/m3 (53) 53.0
 
March 23, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (15) N/A N/A 21.0 μg/m3 (69) 69.0
 
March 23, 2019, noon N/A N/A N/A N/A N/A N/A 12.0 ppb (9) N/A N/A 18.0 μg/m3 (63) 63.0
 
March 23, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 11.0 ppb (8) N/A N/A 18.3 μg/m3 (63) 63.0
 
March 23, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A 12.0 ppb (9) N/A N/A 14.7 μg/m3 (56) 56.0
 
March 23, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (16) N/A N/A 13.4 μg/m3 (53) 53.0
 
March 23, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 19.0 ppb (15) N/A N/A 11.8 μg/m3 (49) 49.0
 
March 23, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (19) N/A N/A 12.9 μg/m3 (52) 52.0
 
March 23, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (18) N/A N/A 6.9 μg/m3 (29) 29.0
 
March 23, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (21) N/A N/A 6.7 μg/m3 (28) 28.0
 
March 23, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (22) N/A N/A 4.4 μg/m3 (18) 22.0
 
March 23, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (25) N/A N/A 5.5 μg/m3 (23) 25.0
 
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 3.2 μg/m3 (13) 25.0
 
March 23, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) N/A N/A 1.3 μg/m3 (5) 27.0
 
March 23, 2019, midnight N/A N/A N/A N/A N/A N/A 38.0 ppb (29) N/A N/A 4.8 μg/m3 (20) 29.0
 
March 22, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (29) N/A N/A 6.4 μg/m3 (27) 29.0
 
March 22, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (30) N/A N/A 10.3 μg/m3 (43) 43.0
 
March 22, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (35) N/A N/A 0.9 μg/m3 (4) 35.0
 
March 22, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 50.0 ppb (38) N/A N/A 0.8 μg/m3 (3) 38.0
 
March 22, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (38) N/A N/A 0.0 μg/m3 (0) 38.0
 
March 22, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (38) N/A N/A 2.1 μg/m3 (9) 38.0
 
March 22, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (35) N/A N/A 2.0 μg/m3 (8) 35.0
 
March 22, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (34) N/A N/A 3.5 μg/m3 (15) 34.0
 
March 22, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) N/A N/A 8.5 μg/m3 (35) 35.0
 
March 22, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) N/A N/A 10.5 μg/m3 (44) 44.0
 
March 22, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) N/A N/A 8.0 μg/m3 (33) 33.0
 
March 22, 2019, noon N/A N/A N/A N/A N/A N/A 29.0 ppb (22) N/A N/A 11.1 μg/m3 (46) 46.0
 
March 22, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (22) N/A N/A 11.8 μg/m3 (49) 49.0
 
March 22, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (22) N/A N/A 7.9 μg/m3 (33) 33.0
 
March 22, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (25) N/A N/A 5.9 μg/m3 (25) 25.0
 
March 22, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) N/A N/A 8.8 μg/m3 (37) 37.0
 
March 22, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) N/A N/A 7.8 μg/m3 (32) 32.0
 
March 22, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) N/A N/A 12.4 μg/m3 (51) 51.0
 
March 22, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) N/A N/A 4.7 μg/m3 (20) 25.0
 
March 22, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) N/A N/A 6.3 μg/m3 (26) 26.0
 
March 22, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) N/A N/A 7.6 μg/m3 (32) 32.0
 
March 22, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) N/A N/A 8.4 μg/m3 (35) 35.0
 
March 22, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (30) N/A N/A 4.4 μg/m3 (18) 30.0
 
March 22, 2019, midnight N/A N/A N/A N/A N/A N/A 43.0 ppb (33) N/A N/A 6.3 μg/m3 (26) 33.0
 
March 21, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (34) N/A N/A 8.3 μg/m3 (35) 35.0
 
March 21, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (35) N/A N/A 6.6 μg/m3 (28) 35.0
 
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 6.2 μg/m3 (26) 32.0
 
March 21, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (30) N/A N/A 6.6 μg/m3 (28) 30.0
 
March 21, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) N/A N/A 8.7 μg/m3 (36) 36.0
 
March 21, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) N/A N/A 9.8 μg/m3 (41) 41.0
 
March 21, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) N/A N/A 14.5 μg/m3 (55) 55.0
 
March 21, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) N/A N/A 15.1 μg/m3 (57) 57.0
 
March 21, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) N/A N/A 17.2 μg/m3 (61) 61.0
 
March 21, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) N/A N/A 8.1 μg/m3 (34) 34.0
 
March 21, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (25) N/A N/A 13.6 μg/m3 (53) 53.0
 
March 21, 2019, noon N/A N/A N/A N/A N/A N/A 32.0 ppb (25) N/A N/A 16.0 μg/m3 (59) 59.0
 
March 21, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) N/A N/A 17.8 μg/m3 (62) 62.0
 
March 21, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) N/A N/A 19.2 μg/m3 (65) 65.0
 
March 21, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (25) N/A N/A 17.6 μg/m3 (62) 62.0
 
March 21, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) N/A 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 34.0 ppb (26) N/A N/A 10.6 μg/m3 (44) 44.0
 
March 21, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) N/A N/A 7.3 μg/m3 (30) 30.0
 
March 21, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) N/A N/A 7.9 μg/m3 (33) 33.0
 
March 21, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (25) N/A N/A 5.3 μg/m3 (22) 25.0
 
March 21, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (25) N/A N/A 10.2 μg/m3 (42) 42.0
 
March 21, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) N/A N/A 16.4 μg/m3 (59) 59.0
 
March 21, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (19) N/A N/A 22.8 μg/m3 (73) 73.0
 
March 21, 2019, midnight N/A N/A N/A N/A N/A N/A 29.0 ppb (22) N/A N/A 21.2 μg/m3 (70) 70.0
 
March 20, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A N/A 20.7 μg/m3 (69) 69.0
 
March 20, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (30) N/A N/A 21.8 μg/m3 (71) 71.0
 
March 20, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (29) N/A N/A 14.4 μg/m3 (55) 55.0
 
March 20, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) N/A N/A 11.4 μg/m3 (48) 48.0
 
March 20, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) N/A N/A 10.8 μg/m3 (45) 45.0
 
March 20, 2019, 6 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 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 12.6 μg/m3 (51) 51.0
 
March 20, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A N/A 3.8 μg/m3 (16) 28.0
 
March 20, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (25) N/A N/A -6.2 μg/m3 (0) 25.0
 
March 20, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) N/A N/A 9.0 μg/m3 (38) 38.0
 
March 20, 2019, noon N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A N/A 11.2 μg/m3 (47) 47.0
 
March 20, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) N/A N/A 15.7 μg/m3 (58) 58.0
 
March 20, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) N/A N/A 14.2 μg/m3 (55) 55.0
 
March 20, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) N/A N/A 12.7 μg/m3 (51) 51.0
 
March 20, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A N/A 15.6 μg/m3 (58) 58.0
 
March 20, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (25) N/A N/A 10.7 μg/m3 (45) 45.0
 
March 20, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) N/A N/A 7.9 μg/m3 (33) 33.0
 
March 20, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) N/A N/A 16.0 μg/m3 (59) 59.0
 
March 20, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (25) N/A N/A 15.8 μg/m3 (58) 58.0
 
March 20, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) N/A N/A 11.2 μg/m3 (47) 47.0
 
March 20, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (30) N/A N/A 12.6 μg/m3 (51) 51.0
 
March 20, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (30) N/A N/A 11.9 μg/m3 (50) 50.0
 
March 20, 2019, midnight N/A N/A N/A N/A N/A N/A 41.0 ppb (32) N/A N/A 9.6 μg/m3 (40) 40.0
 
March 19, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (37) N/A N/A 6.3 μg/m3 (26) 37.0
 
March 19, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 52.0 ppb (40) N/A N/A -0.6 μg/m3 (0) 40.0
 
March 19, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 51.0 ppb (39) N/A N/A 10.0 μg/m3 (42) 42.0
 
March 19, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 50.0 ppb (38) N/A N/A 11.8 μg/m3 (49) 49.0
 
March 19, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 50.0 ppb (38) N/A N/A 4.6 μg/m3 (19) 38.0
 
March 19, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (38) N/A N/A 7.1 μg/m3 (30) 38.0
 
March 19, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (36) N/A N/A 11.4 μg/m3 (48) 48.0
 
March 19, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (32) N/A 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 36.0 ppb (28) N/A N/A 13.8 μg/m3 (54) 54.0
 
March 19, 2019, noon N/A N/A N/A N/A N/A N/A 13.0 ppb (10) N/A N/A 17.0 μg/m3 (61) 61.0
 
March 19, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (17) N/A N/A 16.9 μg/m3 (60) 60.0
 
March 19, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (18) N/A N/A 17.3 μg/m3 (61) 61.0
 
March 19, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (21) N/A N/A 14.4 μg/m3 (55) 55.0
 
March 19, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (19) N/A N/A 19.8 μg/m3 (67) 67.0
 
March 19, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (18) N/A N/A 17.5 μg/m3 (62) 62.0
 
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 6.2 μg/m3 (26) 26.0
 
March 19, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A N/A 10.7 μg/m3 (45) 45.0
 
March 19, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) N/A N/A 11.6 μg/m3 (48) 48.0
 
March 19, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) N/A N/A 14.1 μg/m3 (54) 54.0
 
March 19, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) N/A N/A 9.2 μg/m3 (38) 38.0
 
March 19, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (35) N/A N/A 9.2 μg/m3 (38) 38.0
 
March 19, 2019, midnight N/A N/A N/A N/A N/A N/A 45.0 ppb (35) N/A N/A 11.9 μg/m3 (50) 50.0
 
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 13.1 μg/m3 (52) 52.0
 
March 18, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (38) N/A N/A 15.0 μg/m3 (56) 56.0
 
March 18, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 50.0 ppb (38) N/A N/A 10.0 μg/m3 (42) 42.0
 
March 18, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 50.0 ppb (38) N/A N/A 7.1 μg/m3 (30) 38.0
 
March 18, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 50.0 ppb (38) N/A N/A 9.3 μg/m3 (39) 39.0
 
March 18, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 50.0 ppb (38) N/A N/A 9.2 μg/m3 (38) 38.0
 
March 18, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (37) N/A N/A 11.6 μg/m3 (48) 48.0
 
March 18, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (37) N/A N/A 15.1 μg/m3 (57) 57.0
 
March 18, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (37) N/A N/A 18.2 μg/m3 (63) 63.0
 
March 18, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (32) N/A N/A 12.6 μg/m3 (51) 51.0
 
March 18, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) N/A N/A 8.1 μg/m3 (34) 34.0
 
March 18, 2019, noon N/A N/A N/A N/A N/A N/A 35.0 ppb (27) N/A N/A 9.0 μg/m3 (38) 38.0
 
March 18, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) N/A N/A 10.4 μg/m3 (43) 43.0
 
March 18, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) N/A N/A 6.6 μg/m3 (28) 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 11.5 μg/m3 (48) 48.0
 
March 18, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A N/A 15.7 μg/m3 (58) 58.0
 
March 18, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) N/A N/A 13.5 μg/m3 (53) 53.0
 
March 18, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) N/A N/A 13.2 μg/m3 (53) 53.0
 
March 18, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) N/A N/A 6.9 μg/m3 (29) 29.0
 
March 18, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A N/A 0.0 μg/m3 (0) 28.0
 
March 18, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (31) N/A N/A -0.9 μg/m3 (0) 31.0
 
March 18, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (31) N/A N/A 14.5 μg/m3 (55) 55.0
 
March 18, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (32) N/A N/A 21.2 μg/m3 (70) 70.0
 
March 18, 2019, midnight N/A N/A N/A N/A N/A N/A 42.0 ppb (32) N/A N/A 8.2 μg/m3 (34) 34.0
 
March 17, 2019, 11 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 17, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (35) N/A N/A 3.3 μg/m3 (14) 35.0
 
March 17, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (35) N/A N/A 1.7 μg/m3 (7) 35.0
 
March 17, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (35) N/A N/A 3.3 μg/m3 (14) 35.0
 
March 17, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (36) N/A N/A 5.0 μg/m3 (21) 36.0
 
March 17, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (36) N/A N/A 1.3 μg/m3 (5) 36.0
 
March 17, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (35) N/A N/A 6.3 μg/m3 (26) 35.0
 
March 17, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (35) N/A N/A 6.1 μg/m3 (25) 35.0
 
March 17, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (33) N/A N/A 4.4 μg/m3 (18) 33.0
 
March 17, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (29) N/A N/A 3.8 μg/m3 (16) 29.0
 
March 17, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (30) N/A N/A 1.6 μg/m3 (7) 30.0
 
March 17, 2019, noon N/A N/A N/A N/A N/A N/A 40.0 ppb (31) N/A N/A -1.2 μg/m3 (0) 31.0
 
March 17, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (31) N/A N/A 2.7 μg/m3 (11) 31.0
 
March 17, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) N/A N/A 2.9 μg/m3 (12) 26.0
 
March 17, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A N/A 2.8 μg/m3 (12) 28.0
 
March 17, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (32) N/A N/A 14.7 μg/m3 (56) 56.0
 
March 17, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (18) N/A N/A 15.6 μg/m3 (58) 58.0
 
March 17, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 18.0 ppb (14) N/A N/A 10.7 μg/m3 (45) 45.0
 
March 17, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 18.0 ppb (14) N/A N/A 12.9 μg/m3 (52) 52.0
 
March 17, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (16) N/A N/A 15.4 μg/m3 (57) 57.0
 
March 17, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (20) N/A N/A 10.0 μg/m3 (42) 42.0
 
March 17, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) N/A N/A 3.0 μg/m3 (12) 24.0
 
March 17, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (32) N/A N/A 0.4 μg/m3 (2) 32.0
 
March 17, 2019, midnight N/A N/A N/A N/A N/A N/A 44.0 ppb (34) N/A N/A 2.6 μg/m3 (11) 34.0
 
March 16, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (35) N/A N/A -5.6 μg/m3 (0) 35.0
 
March 16, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (35) N/A N/A -8.0 μg/m3 (0) 35.0
 
March 16, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (35) N/A N/A 3.4 μg/m3 (14) 35.0
 
March 16, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (35) N/A N/A -1.8 μg/m3 (0) 35.0