AQSQID: 482450022

Site Name: Hamshire C64

Location: Jefferson Co, TX

Reporting: True, Located: True

Current AQI: 36.0

Jefferson Co TX, US: 29.863952, -94.3178

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
March 25, 2019, midnight N/A N/A N/A N/A N/A N/A 47.0 ppb (36) N/A N/A N/A 36.0
 
March 24, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (38) N/A N/A N/A 38.0
 
March 24, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 50.0 ppb (38) N/A N/A 5.0 μg/m3 (21) 38.0
 
March 24, 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 24, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 51.0 ppb (39) N/A N/A 5.0 μg/m3 (21) 39.0
 
March 24, 2019, 7 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 24, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 52.0 ppb (40) N/A N/A 8.0 μg/m3 (33) 40.0
 
March 24, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 53.0 ppb (41) N/A N/A 6.0 μg/m3 (25) 41.0
 
March 24, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 55.0 ppb (42) N/A N/A 5.0 μg/m3 (21) 42.0
 
March 24, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 55.0 ppb (42) N/A N/A 4.0 μg/m3 (17) 42.0
 
March 24, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 50.0 ppb (38) N/A N/A 8.0 μg/m3 (33) 38.0
 
March 24, 2019, 1 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 24, 2019, noon N/A N/A N/A N/A N/A N/A 41.0 ppb (32) N/A N/A 13.0 μg/m3 (52) 52.0
 
March 24, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (33) N/A N/A 10.0 μg/m3 (42) 42.0
 
March 24, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (32) N/A N/A 9.0 μg/m3 (38) 38.0
 
March 24, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (31) N/A N/A 10.0 μg/m3 (42) 42.0
 
March 24, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (31) N/A N/A 9.0 μg/m3 (38) 38.0
 
March 24, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (35) N/A N/A 6.0 μg/m3 (25) 35.0
 
March 24, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (37) N/A N/A 10.0 μg/m3 (42) 42.0
 
March 24, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (38) N/A N/A 8.0 μg/m3 (33) 38.0
 
March 24, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 9.0 μg/m3 (38) 38.0
 
March 24, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 52.0 ppb (40) N/A N/A 9.0 μg/m3 (38) 40.0
 
March 24, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 52.0 ppb (40) N/A N/A 11.0 μg/m3 (46) 46.0
 
March 24, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 56.0 ppb (43) N/A N/A 8.0 μg/m3 (33) 43.0
 
March 24, 2019, midnight N/A N/A N/A N/A N/A N/A 60.0 ppb (46) N/A N/A 11.0 μg/m3 (46) 46.0
 
March 23, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 62.0 ppb (48) N/A N/A N/A 48.0
 
March 23, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 64.0 ppb (49) N/A N/A 5.0 μg/m3 (21) 49.0
 
March 23, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 63.0 ppb (48) N/A N/A 9.0 μg/m3 (38) 48.0
 
March 23, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 61.0 ppb (47) N/A N/A 7.0 μg/m3 (29) 47.0
 
March 23, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 60.0 ppb (46) N/A N/A 7.0 μg/m3 (29) 46.0
 
March 23, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 59.0 ppb (45) N/A N/A 7.0 μg/m3 (29) 45.0
 
March 23, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 59.0 ppb (45) N/A N/A 7.0 μg/m3 (29) 45.0
 
March 23, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 60.0 ppb (46) N/A N/A 8.0 μg/m3 (33) 46.0
 
March 23, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 56.0 ppb (43) N/A N/A 10.0 μg/m3 (42) 43.0
 
March 23, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (32) N/A N/A 6.0 μg/m3 (25) 32.0
 
March 23, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (29) N/A N/A 9.0 μg/m3 (38) 38.0
 
March 23, 2019, noon N/A N/A N/A N/A N/A N/A 35.0 ppb (27) N/A N/A 12.0 μg/m3 (50) 50.0
 
March 23, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (17) N/A N/A 9.0 μg/m3 (38) 38.0
 
March 23, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A 15.0 ppb (12) N/A N/A 8.0 μg/m3 (33) 33.0
 
March 23, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A 18.0 ppb (14) N/A N/A 8.0 μg/m3 (33) 33.0
 
March 23, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) N/A N/A 15.0 μg/m3 (56) 56.0
 
March 23, 2019, 7 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 23, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (21) N/A N/A 15.0 μg/m3 (56) 56.0
 
March 23, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) N/A N/A 23.0 μg/m3 (73) 73.0
 
March 23, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (29) N/A N/A 28.0 μg/m3 (84) 84.0
 
March 23, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (35) N/A N/A 23.0 μg/m3 (73) 73.0
 
March 23, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 56.0 ppb (43) N/A N/A 16.0 μg/m3 (59) 59.0
 
March 23, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 59.0 ppb (45) N/A N/A 17.0 μg/m3 (61) 61.0
 
March 23, 2019, midnight N/A N/A N/A N/A N/A N/A 63.0 ppb (48) N/A N/A 10.0 μg/m3 (42) 48.0
 
March 22, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 69.0 ppb (53) N/A N/A N/A 53.0
 
March 22, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 72.0 ppb (56) N/A N/A 9.0 μg/m3 (38) 56.0
 
March 22, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 70.0 ppb (54) N/A N/A 11.0 μg/m3 (46) 54.0
 
March 22, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 68.0 ppb (52) N/A N/A 8.0 μg/m3 (33) 52.0
 
March 22, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 67.0 ppb (52) N/A N/A 6.0 μg/m3 (25) 52.0
 
March 22, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 65.0 ppb (50) N/A N/A 6.0 μg/m3 (25) 50.0
 
March 22, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 62.0 ppb (48) N/A N/A 7.0 μg/m3 (29) 48.0
 
March 22, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 57.0 ppb (44) N/A N/A 9.0 μg/m3 (38) 44.0
 
March 22, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (38) N/A N/A 7.0 μg/m3 (29) 38.0
 
March 22, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) N/A N/A 15.0 μg/m3 (56) 56.0
 
March 22, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 18.0 ppb (14) N/A N/A 15.0 μg/m3 (56) 56.0
 
March 22, 2019, noon N/A N/A N/A N/A N/A N/A 3.0 ppb (2) N/A N/A 12.0 μg/m3 (50) 50.0
 
March 22, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 7.0 ppb (5) N/A N/A 11.0 μg/m3 (46) 46.0
 
March 22, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A 18.0 ppb (14) N/A N/A 8.0 μg/m3 (33) 33.0
 
March 22, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) N/A N/A 10.0 μg/m3 (42) 42.0
 
March 22, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A N/A 10.0 μg/m3 (42) 42.0
 
March 22, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (29) N/A N/A 7.0 μg/m3 (29) 29.0
 
March 22, 2019, 6 a.m. 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 22, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (32) N/A N/A 6.0 μg/m3 (25) 32.0
 
March 22, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (35) N/A N/A 10.0 μg/m3 (42) 42.0
 
March 22, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (35) N/A N/A 9.0 μg/m3 (38) 38.0
 
March 22, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (37) N/A N/A 10.0 μg/m3 (42) 42.0
 
March 22, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 52.0 ppb (40) N/A N/A 10.0 μg/m3 (42) 42.0
 
March 22, 2019, midnight N/A N/A N/A N/A N/A N/A 59.0 ppb (45) N/A N/A 11.0 μg/m3 (46) 46.0
 
March 21, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 56.0 ppb (43) N/A N/A N/A 43.0
 
March 21, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 60.0 ppb (46) N/A N/A 5.0 μg/m3 (21) 46.0
 
March 21, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 59.0 ppb (45) N/A N/A 8.0 μg/m3 (33) 45.0
 
March 21, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 59.0 ppb (45) N/A N/A 3.0 μg/m3 (12) 45.0
 
March 21, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 58.0 ppb (45) N/A N/A 6.0 μg/m3 (25) 45.0
 
March 21, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 59.0 ppb (45) N/A N/A 8.0 μg/m3 (33) 45.0
 
March 21, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 58.0 ppb (45) N/A N/A 7.0 μg/m3 (29) 45.0
 
March 21, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 55.0 ppb (42) N/A N/A 7.0 μg/m3 (29) 42.0
 
March 21, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 50.0 ppb (38) N/A N/A 8.0 μg/m3 (33) 38.0
 
March 21, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A N/A 16.0 μg/m3 (59) 59.0
 
March 21, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 11.0 ppb (8) N/A N/A 23.0 μg/m3 (73) 73.0
 
March 21, 2019, noon N/A N/A N/A N/A N/A N/A 4.0 ppb (3) N/A 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 8.0 ppb (6) N/A N/A 22.0 μg/m3 (71) 71.0
 
March 21, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A 14.0 ppb (11) N/A N/A 20.0 μg/m3 (67) 67.0
 
March 21, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (18) N/A N/A 19.0 μg/m3 (65) 65.0
 
March 21, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) N/A N/A 19.0 μg/m3 (65) 65.0
 
March 21, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (29) N/A N/A 18.0 μg/m3 (63) 63.0
 
March 21, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A N/A 14.0 μg/m3 (54) 54.0
 
March 21, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (31) N/A N/A 20.0 μg/m3 (67) 67.0
 
March 21, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (32) N/A N/A 15.0 μg/m3 (56) 56.0
 
March 21, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (35) N/A N/A 17.0 μg/m3 (61) 61.0
 
March 21, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (34) N/A N/A 16.0 μg/m3 (59) 59.0
 
March 21, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (36) N/A N/A 14.0 μg/m3 (54) 54.0
 
March 21, 2019, midnight N/A N/A N/A N/A N/A N/A 58.0 ppb (45) N/A N/A 15.0 μg/m3 (56) 56.0
 
March 20, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 71.0 ppb (55) N/A N/A N/A 55.0
 
March 20, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 70.0 ppb (54) N/A N/A 20.0 μg/m3 (67) 67.0
 
March 20, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 64.0 ppb (49) N/A N/A 39.0 μg/m3 (109) 109.0
 
March 20, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 68.0 ppb (52) N/A N/A 18.0 μg/m3 (63) 63.0
 
March 20, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 70.0 ppb (54) N/A N/A 16.0 μg/m3 (59) 59.0
 
March 20, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 62.0 ppb (48) N/A N/A 18.0 μg/m3 (63) 63.0
 
March 20, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 56.0 ppb (43) N/A N/A 18.0 μg/m3 (63) 63.0
 
March 20, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (35) N/A N/A 11.0 μg/m3 (46) 46.0
 
March 20, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) N/A N/A N/A 25.0
 
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 16.0 μg/m3 (59) 59.0
 
March 20, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 15.0 ppb (12) N/A N/A 20.0 μg/m3 (67) 67.0
 
March 20, 2019, noon N/A N/A N/A N/A N/A N/A 3.0 ppb (2) N/A N/A 18.0 μg/m3 (63) 63.0
 
March 20, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (2) N/A N/A 20.0 μg/m3 (67) 67.0
 
March 20, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A 4.0 ppb (3) N/A N/A 14.0 μg/m3 (54) 54.0
 
March 20, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A 5.0 ppb (4) N/A N/A 13.0 μg/m3 (52) 52.0
 
March 20, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 11.0 ppb (8) N/A N/A 11.0 μg/m3 (46) 46.0
 
March 20, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 7.0 ppb (5) N/A N/A 12.0 μg/m3 (50) 50.0
 
March 20, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 0.0 ppb (0) N/A N/A 11.0 μg/m3 (46) 46.0
 
March 20, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 0.0 ppb (0) N/A N/A 14.0 μg/m3 (54) 54.0
 
March 20, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 16.0 ppb (12) N/A N/A 12.0 μg/m3 (50) 50.0
 
March 20, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (15) N/A N/A 13.0 μg/m3 (52) 52.0
 
March 20, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) N/A N/A 16.0 μg/m3 (59) 59.0
 
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 11.0 μg/m3 (46) 46.0
 
March 20, 2019, midnight N/A N/A N/A N/A N/A N/A 49.0 ppb (38) N/A N/A 12.0 μg/m3 (50) 50.0
 
March 19, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 58.0 ppb (45) N/A N/A N/A 45.0
 
March 19, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 61.0 ppb (47) N/A N/A 14.0 μg/m3 (54) 54.0
 
March 19, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 61.0 ppb (47) N/A N/A 12.0 μg/m3 (50) 50.0
 
March 19, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 61.0 ppb (47) N/A N/A 8.0 μg/m3 (33) 47.0
 
March 19, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 60.0 ppb (46) N/A N/A 7.0 μg/m3 (29) 46.0
 
March 19, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 55.0 ppb (42) N/A N/A 12.0 μg/m3 (50) 50.0
 
March 19, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 52.0 ppb (40) N/A N/A 12.0 μg/m3 (50) 50.0
 
March 19, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (36) N/A N/A 13.0 μg/m3 (52) 52.0
 
March 19, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) N/A N/A 13.0 μg/m3 (52) 52.0
 
March 19, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (16) N/A N/A 20.0 μg/m3 (67) 67.0
 
March 19, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 10.0 ppb (8) N/A N/A 21.0 μg/m3 (69) 69.0
 
March 19, 2019, noon N/A N/A N/A N/A N/A N/A 0.0 ppb (0) N/A N/A 27.0 μg/m3 (82) 82.0
 
March 19, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A 17.0 μg/m3 (61) 61.0
 
March 19, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A 7.0 ppb (5) N/A N/A 18.0 μg/m3 (63) 63.0
 
March 19, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A 8.0 ppb (6) N/A N/A 21.0 μg/m3 (69) 69.0
 
March 19, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 0.0 ppb (0) N/A N/A 24.0 μg/m3 (76) 76.0
 
March 19, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 0.0 ppb (0) N/A N/A 25.0 μg/m3 (78) 78.0
 
March 19, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 7.0 ppb (5) N/A N/A 27.0 μg/m3 (82) 82.0
 
March 19, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 16.0 ppb (12) N/A N/A 34.0 μg/m3 (97) 97.0
 
March 19, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (17) N/A N/A 36.0 μg/m3 (101) 101.0
 
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 42.0 μg/m3 (116) 116.0
 
March 19, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (29) N/A N/A 42.0 μg/m3 (116) 116.0
 
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 39.0 μg/m3 (109) 109.0
 
March 19, 2019, midnight N/A N/A N/A N/A N/A N/A 49.0 ppb (38) N/A N/A 19.0 μg/m3 (65) 65.0
 
March 18, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 55.0 ppb (42) N/A N/A N/A 42.0
 
March 18, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 57.0 ppb (44) N/A N/A 12.0 μg/m3 (50) 50.0
 
March 18, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 57.0 ppb (44) N/A 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 53.0 ppb (41) N/A N/A 5.0 μg/m3 (21) 41.0
 
March 18, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 51.0 ppb (39) N/A N/A 7.0 μg/m3 (29) 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 7.0 μg/m3 (29) 38.0
 
March 18, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (35) N/A N/A 5.0 μg/m3 (21) 35.0
 
March 18, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) N/A N/A 6.0 μg/m3 (25) 26.0
 
March 18, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (20) N/A N/A 9.0 μg/m3 (38) 38.0
 
March 18, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 17.0 ppb (13) N/A N/A 13.0 μg/m3 (52) 52.0
 
March 18, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 10.0 ppb (8) N/A N/A 15.0 μg/m3 (56) 56.0
 
March 18, 2019, noon N/A N/A N/A N/A N/A N/A 8.0 ppb (6) N/A N/A 15.0 μg/m3 (56) 56.0
 
March 18, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 7.0 ppb (5) N/A N/A 12.0 μg/m3 (50) 50.0
 
March 18, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A 2.0 ppb (2) N/A N/A 13.0 μg/m3 (52) 52.0
 
March 18, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A 9.0 μg/m3 (38) 38.0
 
March 18, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 0.0 ppb (0) N/A N/A 10.0 μg/m3 (42) 42.0
 
March 18, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 0.0 ppb (0) N/A N/A 9.0 μg/m3 (38) 38.0
 
March 18, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A 10.0 μg/m3 (42) 42.0
 
March 18, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A 8.0 μg/m3 (33) 33.0
 
March 18, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 16.0 ppb (12) N/A N/A 13.0 μg/m3 (52) 52.0
 
March 18, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (17) N/A N/A 31.0 μg/m3 (90) 90.0
 
March 18, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (18) N/A N/A 19.0 μg/m3 (65) 65.0
 
March 18, 2019, 1 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