AQSQID: 390610040

Site Name: Taft

Location: Cincinnati, OH

Reporting: True, Located: True

Current AQI: 38.0

Cincinnati OH, US: 39.12886, -84.50404

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
March 22, 2019, 11 p.m. N/A N/A N/A 4.0 ppb (4) N/A 1.0 ppb (1) 49.0 ppb (38) 0.11 ppb (1) 5.0 μg/m3 (5) 0.8 μg/m3 (3) 38.0
 
March 22, 2019, 10 p.m. N/A N/A N/A 3.0 ppb (3) N/A 1.0 ppb (1) 48.0 ppb (37) 0.11 ppb (1) 5.0 μg/m3 (5) 0.8 μg/m3 (3) 37.0
 
March 22, 2019, 9 p.m. N/A N/A N/A 3.0 ppb (3) N/A 1.0 ppb (1) 48.0 ppb (37) 0.11 ppb (1) 6.0 μg/m3 (5) 0.8 μg/m3 (3) 37.0
 
March 22, 2019, 8 p.m. N/A N/A N/A 3.0 ppb (3) N/A 1.0 ppb (1) 47.0 ppb (36) 0.13 ppb (1) 8.0 μg/m3 (7) 1.0 μg/m3 (4) 36.0
 
March 22, 2019, 7 p.m. N/A N/A N/A 3.0 ppb (3) N/A 1.0 ppb (1) 49.0 ppb (38) 0.12 ppb (1) 7.0 μg/m3 (6) 1.2 μg/m3 (5) 38.0
 
March 22, 2019, 6 p.m. N/A N/A N/A 3.0 ppb (3) N/A 1.0 ppb (1) 47.0 ppb (36) 0.11 ppb (1) 7.0 μg/m3 (6) 1.6 μg/m3 (7) 36.0
 
March 22, 2019, 5 p.m. N/A N/A N/A 4.0 ppb (4) N/A 1.0 ppb (1) 43.0 ppb (33) 0.12 ppb (1) 10.0 μg/m3 (9) 2.4 μg/m3 (10) 33.0
 
March 22, 2019, 4 p.m. N/A N/A N/A 6.0 ppb (6) N/A 1.0 ppb (1) 39.0 ppb (30) 0.13 ppb (1) 16.0 μg/m3 (15) 5.3 μg/m3 (22) 30.0
 
March 22, 2019, 3 p.m. N/A N/A N/A 6.0 ppb (6) N/A N/A 37.0 ppb (28) 0.14 ppb (2) 17.0 μg/m3 (15) 8.5 μg/m3 (35) 35.0
 
March 22, 2019, 2 p.m. N/A N/A N/A 6.0 ppb (6) N/A N/A 34.0 ppb (26) 0.15 ppb (2) 18.0 μg/m3 (16) 8.7 μg/m3 (36) 36.0
 
March 22, 2019, 1 p.m. N/A N/A N/A 8.0 ppb (7) N/A N/A 30.0 ppb (23) 0.14 ppb (2) 14.0 μg/m3 (13) 9.1 μg/m3 (38) 38.0
 
March 22, 2019, noon N/A N/A N/A 16.0 ppb (15) N/A 2.0 ppb (3) 23.0 ppb (18) 0.16 ppb (2) 21.0 μg/m3 (19) 9.7 μg/m3 (40) 40.0
 
March 22, 2019, 11 a.m. N/A N/A N/A 16.0 ppb (15) N/A 1.0 ppb (1) 21.0 ppb (16) 0.17 ppb (2) 20.0 μg/m3 (18) 10.8 μg/m3 (45) 45.0
 
March 22, 2019, 10 a.m. N/A N/A N/A 9.0 ppb (8) N/A 1.0 ppb (1) 29.0 ppb (22) 0.16 ppb (2) 16.0 μg/m3 (15) 12.6 μg/m3 (51) 51.0
 
March 22, 2019, 9 a.m. N/A N/A N/A 8.0 ppb (7) N/A 1.0 ppb (1) 30.0 ppb (23) 0.15 ppb (2) 18.0 μg/m3 (16) 13.8 μg/m3 (54) 54.0
 
March 22, 2019, 8 a.m. N/A N/A N/A 12.0 ppb (11) N/A 1.0 ppb (1) 27.0 ppb (21) 0.16 ppb (2) 20.0 μg/m3 (18) 14.4 μg/m3 (55) 55.0
 
March 22, 2019, 7 a.m. N/A N/A N/A 9.0 ppb (8) N/A 1.0 ppb (1) 32.0 ppb (25) 0.14 ppb (2) 18.0 μg/m3 (16) 13.2 μg/m3 (53) 53.0
 
March 22, 2019, 6 a.m. N/A N/A N/A 6.0 ppb (6) N/A 1.0 ppb (1) 36.0 ppb (28) 0.15 ppb (2) 16.0 μg/m3 (15) 13.5 μg/m3 (53) 53.0
 
March 22, 2019, 5 a.m. N/A N/A N/A 6.0 ppb (6) N/A 1.0 ppb (1) 39.0 ppb (30) 0.15 ppb (2) 18.0 μg/m3 (16) 11.6 μg/m3 (48) 48.0
 
March 22, 2019, 4 a.m. N/A N/A N/A 5.0 ppb (5) N/A 1.0 ppb (1) 38.0 ppb (29) 0.15 ppb (2) 23.0 μg/m3 (21) 14.4 μg/m3 (55) 55.0
 
March 22, 2019, 3 a.m. N/A N/A N/A 7.0 ppb (6) N/A 1.0 ppb (1) 32.0 ppb (25) 0.16 ppb (2) 22.0 μg/m3 (20) 23.5 μg/m3 (74) 74.0
 
March 22, 2019, 2 a.m. N/A N/A N/A 8.0 ppb (7) N/A 1.0 ppb (1) 30.0 ppb (23) 0.17 ppb (2) 22.0 μg/m3 (20) 21.0 μg/m3 (69) 69.0
 
March 22, 2019, 1 a.m. N/A N/A N/A 6.0 ppb (6) N/A 1.0 ppb (1) 33.0 ppb (25) 0.15 ppb (2) 18.0 μg/m3 (16) 16.2 μg/m3 (59) 59.0
 
March 22, 2019, midnight N/A N/A N/A 6.0 ppb (6) N/A 1.0 ppb (1) 34.0 ppb (26) 0.14 ppb (2) 18.0 μg/m3 (16) 13.9 μg/m3 (54) 54.0
 
March 21, 2019, 11 p.m. N/A N/A N/A 7.0 ppb (6) N/A 1.0 ppb (1) 33.0 ppb (25) 0.15 ppb (2) 16.0 μg/m3 (15) 14.6 μg/m3 (56) 56.0
 
March 21, 2019, 10 p.m. N/A N/A N/A 8.0 ppb (7) N/A 1.0 ppb (1) 33.0 ppb (25) 0.16 ppb (2) 15.0 μg/m3 (14) 11.1 μg/m3 (46) 46.0
 
March 21, 2019, 9 p.m. N/A N/A N/A 7.0 ppb (6) N/A 1.0 ppb (1) 33.0 ppb (25) 0.14 ppb (2) 16.0 μg/m3 (15) 10.7 μg/m3 (45) 45.0
 
March 21, 2019, 8 p.m. N/A N/A N/A 7.0 ppb (6) N/A 1.0 ppb (1) 29.0 ppb (22) 0.15 ppb (2) 17.0 μg/m3 (15) 11.8 μg/m3 (49) 49.0
 
March 21, 2019, 7 p.m. N/A N/A N/A 6.0 ppb (6) N/A 1.0 ppb (1) 33.0 ppb (25) 0.14 ppb (2) 16.0 μg/m3 (15) 9.6 μg/m3 (40) 40.0
 
March 21, 2019, 6 p.m. N/A N/A N/A 5.0 ppb (5) N/A 1.0 ppb (1) 40.0 ppb (31) 0.13 ppb (1) 9.0 μg/m3 (8) 6.9 μg/m3 (29) 31.0
 
March 21, 2019, 5 p.m. N/A N/A N/A 5.0 ppb (5) N/A 1.0 ppb (1) 38.0 ppb (29) 0.13 ppb (1) 8.0 μg/m3 (7) 3.8 μg/m3 (16) 29.0
 
March 21, 2019, 4 p.m. N/A N/A N/A 6.0 ppb (6) N/A 1.0 ppb (1) 34.0 ppb (26) 0.14 ppb (2) 19.0 μg/m3 (17) 7.3 μg/m3 (30) 30.0
 
March 21, 2019, 3 p.m. N/A N/A N/A 12.0 ppb (11) N/A 1.0 ppb (1) 28.0 ppb (22) 0.18 ppb (2) 28.0 μg/m3 (25) 23.0 μg/m3 (73) 73.0
 
March 21, 2019, 2 p.m. N/A N/A N/A 11.0 ppb (10) N/A 1.0 ppb (1) 30.0 ppb (23) 0.15 ppb (2) 24.0 μg/m3 (22) 21.0 μg/m3 (69) 69.0
 
March 21, 2019, 1 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 27.0 ppb (21) 0.16 ppb (2) 23.0 μg/m3 (21) 22.1 μg/m3 (71) 71.0
 
March 21, 2019, noon N/A N/A N/A N/A N/A 1.0 ppb (1) 26.0 ppb (20) 0.17 ppb (2) 24.0 μg/m3 (22) 20.4 μg/m3 (68) 68.0
 
March 21, 2019, 11 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 27.0 ppb (21) 0.15 ppb (2) 21.0 μg/m3 (19) 18.5 μg/m3 (64) 64.0
 
March 21, 2019, 10 a.m. N/A N/A N/A 16.0 ppb (15) N/A 1.0 ppb (1) 28.0 ppb (22) 0.14 ppb (2) 17.0 μg/m3 (15) 16.7 μg/m3 (60) 60.0
 
March 21, 2019, 9 a.m. N/A N/A N/A 11.0 ppb (10) N/A 1.0 ppb (1) 34.0 ppb (26) 0.12 ppb (1) 17.0 μg/m3 (15) 12.3 μg/m3 (51) 51.0
 
March 21, 2019, 8 a.m. N/A N/A N/A 9.0 ppb (8) N/A 1.0 ppb (1) 40.0 ppb (31) 0.1 ppb (1) 13.0 μg/m3 (12) 7.6 μg/m3 (32) 32.0
 
March 21, 2019, 7 a.m. N/A N/A N/A 8.0 ppb (7) N/A 1.0 ppb (1) 41.0 ppb (32) 0.1 ppb (1) 13.0 μg/m3 (12) 7.6 μg/m3 (32) 32.0
 
March 21, 2019, 6 a.m. N/A N/A N/A 10.0 ppb (9) N/A 1.0 ppb (1) 38.0 ppb (29) 0.1 ppb (1) 11.0 μg/m3 (10) 7.3 μg/m3 (30) 30.0
 
March 21, 2019, 5 a.m. N/A N/A N/A 8.0 ppb (7) N/A 1.0 ppb (1) 43.0 ppb (33) 0.11 ppb (1) 14.0 μg/m3 (13) 9.4 μg/m3 (39) 39.0
 
March 21, 2019, 4 a.m. N/A N/A N/A 14.0 ppb (13) N/A 4.0 ppb (6) 39.0 ppb (30) 0.13 ppb (1) 21.0 μg/m3 (19) 12.3 μg/m3 (51) 51.0
 
March 21, 2019, 3 a.m. N/A N/A N/A 12.0 ppb (11) N/A 4.0 ppb (6) 43.0 ppb (33) 0.13 ppb (1) 21.0 μg/m3 (19) 12.4 μg/m3 (51) 51.0
 
March 21, 2019, 2 a.m. N/A N/A N/A 14.0 ppb (13) N/A 3.0 ppb (4) 42.0 ppb (32) 0.14 ppb (2) 18.0 μg/m3 (16) 10.8 μg/m3 (45) 45.0
 
March 21, 2019, 1 a.m. N/A N/A N/A 9.0 ppb (8) N/A 1.0 ppb (1) 47.0 ppb (36) 0.14 ppb (2) 18.0 μg/m3 (16) 9.3 μg/m3 (39) 39.0
 
March 21, 2019, midnight N/A N/A N/A 18.0 ppb (17) N/A 1.0 ppb (1) 40.0 ppb (31) 0.18 ppb (2) 18.0 μg/m3 (16) 7.6 μg/m3 (32) 32.0
 
March 20, 2019, 11 p.m. N/A N/A N/A 15.0 ppb (14) N/A 1.0 ppb (1) 44.0 ppb (34) 0.17 ppb (2) 18.0 μg/m3 (16) 6.6 μg/m3 (28) 34.0
 
March 20, 2019, 10 p.m. N/A N/A N/A 9.0 ppb (8) N/A 1.0 ppb (1) 50.0 ppb (38) 0.16 ppb (2) 15.0 μg/m3 (14) 6.8 μg/m3 (28) 38.0
 
March 20, 2019, 9 p.m. N/A N/A N/A 7.0 ppb (6) N/A 1.0 ppb (1) 54.0 ppb (42) 0.15 ppb (2) 15.0 μg/m3 (14) 7.0 μg/m3 (29) 42.0
 
March 20, 2019, 8 p.m. N/A N/A N/A 7.0 ppb (6) N/A 1.0 ppb (1) 54.0 ppb (42) 0.15 ppb (2) 14.0 μg/m3 (13) 7.2 μg/m3 (30) 42.0
 
March 20, 2019, 7 p.m. N/A N/A N/A 6.0 ppb (6) N/A 1.0 ppb (1) 55.0 ppb (42) 0.15 ppb (2) 20.0 μg/m3 (18) 7.8 μg/m3 (32) 42.0
 
March 20, 2019, 6 p.m. N/A N/A N/A 7.0 ppb (6) N/A 1.0 ppb (1) 54.0 ppb (42) N/A 16.0 μg/m3 (15) 9.5 μg/m3 (40) 42.0
 
March 20, 2019, 5 p.m. N/A N/A N/A 7.0 ppb (6) N/A 1.0 ppb (1) 51.0 ppb (39) N/A 18.0 μg/m3 (16) 11.3 μg/m3 (47) 47.0
 
March 20, 2019, 4 p.m. N/A N/A N/A 16.0 ppb (15) N/A 1.0 ppb (1) 37.0 ppb (28) N/A 26.0 μg/m3 (24) 15.9 μg/m3 (58) 58.0
 
March 20, 2019, 3 p.m. N/A N/A N/A 20.0 ppb (19) N/A 2.0 ppb (3) 27.0 ppb (21) N/A 26.0 μg/m3 (24) 18.9 μg/m3 (65) 65.0
 
March 20, 2019, 2 p.m. N/A N/A N/A 21.0 ppb (19) N/A 2.0 ppb (3) 25.0 ppb (19) N/A 31.0 μg/m3 (28) 18.7 μg/m3 (64) 64.0
 
March 20, 2019, 1 p.m. N/A N/A N/A 31.0 ppb (29) N/A 2.0 ppb (3) 11.0 ppb (8) 0.53 ppb (6) 34.0 μg/m3 (31) 22.0 μg/m3 (71) 71.0
 
March 20, 2019, noon N/A N/A N/A 36.0 ppb (33) N/A 2.0 ppb (3) 2.0 ppb (2) 1.12 ppb (12) 54.0 μg/m3 (49) 22.7 μg/m3 (73) 73.0
 
March 20, 2019, 11 a.m. N/A N/A N/A 37.0 ppb (34) N/A 2.0 ppb (3) 1.0 ppb (1) 1.02 ppb (11) 39.0 μg/m3 (35) 20.4 μg/m3 (68) 68.0
 
March 20, 2019, 10 a.m. N/A N/A N/A 38.0 ppb (35) N/A 1.0 ppb (1) 4.0 ppb (3) 0.56 ppb (6) 28.0 μg/m3 (25) 20.3 μg/m3 (68) 68.0
 
March 20, 2019, 9 a.m. N/A N/A N/A 37.0 ppb (34) N/A 1.0 ppb (1) 3.0 ppb (2) 0.43 ppb (5) 27.0 μg/m3 (25) 17.8 μg/m3 (62) 62.0
 
March 20, 2019, 8 a.m. N/A N/A N/A 41.0 ppb (38) N/A 1.0 ppb (1) 4.0 ppb (3) 0.49 ppb (5) 32.0 μg/m3 (29) 18.8 μg/m3 (64) 64.0
 
March 20, 2019, 7 a.m. N/A N/A N/A 46.0 ppb (43) N/A 2.0 ppb (3) 1.0 ppb (1) 0.68 ppb (8) 33.0 μg/m3 (30) 19.3 μg/m3 (66) 66.0
 
March 20, 2019, 6 a.m. N/A N/A N/A 45.0 ppb (42) N/A 1.0 ppb (1) 7.0 ppb (5) 0.38 ppb (4) 22.0 μg/m3 (20) 16.8 μg/m3 (60) 60.0
 
March 20, 2019, 5 a.m. N/A N/A N/A 48.0 ppb (44) N/A 2.0 ppb (3) 1.0 ppb (1) 0.56 ppb (6) 30.0 μg/m3 (27) 17.2 μg/m3 (61) 61.0
 
March 20, 2019, 4 a.m. N/A N/A N/A 45.0 ppb (42) N/A 1.0 ppb (1) 4.0 ppb (3) 0.5 ppb (6) 29.0 μg/m3 (26) 16.9 μg/m3 (60) 60.0
 
March 20, 2019, 3 a.m. N/A N/A N/A 46.0 ppb (43) N/A 1.0 ppb (1) 4.0 ppb (3) 0.51 ppb (6) 30.0 μg/m3 (27) 14.5 μg/m3 (55) 55.0
 
March 20, 2019, 2 a.m. N/A N/A N/A 27.0 ppb (25) N/A 1.0 ppb (1) 24.0 ppb (18) 0.26 ppb (3) 19.0 μg/m3 (17) 10.7 μg/m3 (45) 45.0
 
March 20, 2019, 1 a.m. N/A N/A N/A 12.0 ppb (11) N/A 1.0 ppb (1) 41.0 ppb (32) 0.18 ppb (2) 12.0 μg/m3 (11) 8.7 μg/m3 (36) 36.0
 
March 20, 2019, midnight N/A N/A N/A 10.0 ppb (9) N/A 1.0 ppb (1) 44.0 ppb (34) 0.18 ppb (2) 14.0 μg/m3 (13) 7.9 μg/m3 (33) 34.0
 
March 19, 2019, 11 p.m. N/A N/A N/A 6.0 ppb (6) N/A 1.0 ppb (1) 50.0 ppb (38) 0.15 ppb (2) 14.0 μg/m3 (13) 8.3 μg/m3 (35) 38.0
 
March 19, 2019, 10 p.m. N/A N/A N/A 6.0 ppb (6) N/A 1.0 ppb (1) 52.0 ppb (40) 0.15 ppb (2) 13.0 μg/m3 (12) 8.5 μg/m3 (35) 40.0
 
March 19, 2019, 9 p.m. N/A N/A N/A 5.0 ppb (5) N/A 1.0 ppb (1) 52.0 ppb (40) 0.15 ppb (2) 11.0 μg/m3 (10) 8.9 μg/m3 (37) 40.0
 
March 19, 2019, 8 p.m. N/A N/A N/A 6.0 ppb (6) N/A 1.0 ppb (1) 50.0 ppb (38) 0.16 ppb (2) 16.0 μg/m3 (15) 10.1 μg/m3 (42) 42.0
 
March 19, 2019, 7 p.m. N/A N/A N/A 8.0 ppb (7) N/A 1.0 ppb (1) 47.0 ppb (36) 0.17 ppb (2) 14.0 μg/m3 (13) 11.6 μg/m3 (48) 48.0
 
March 19, 2019, 6 p.m. N/A N/A N/A 8.0 ppb (7) N/A 1.0 ppb (1) 45.0 ppb (35) 0.18 ppb (2) 13.0 μg/m3 (12) 11.7 μg/m3 (49) 49.0
 
March 19, 2019, 5 p.m. N/A N/A N/A 13.0 ppb (12) N/A 1.0 ppb (1) 40.0 ppb (31) 0.2 ppb (2) 14.0 μg/m3 (13) 12.8 μg/m3 (52) 52.0
 
March 19, 2019, 4 p.m. N/A N/A N/A 21.0 ppb (19) N/A 1.0 ppb (1) 31.0 ppb (24) 0.35 ppb (4) 24.0 μg/m3 (22) 15.8 μg/m3 (58) 58.0
 
March 19, 2019, 3 p.m. N/A N/A N/A 25.0 ppb (23) N/A 1.0 ppb (1) 26.0 ppb (20) 0.31 ppb (3) 28.0 μg/m3 (25) 16.0 μg/m3 (59) 59.0
 
March 19, 2019, 2 p.m. N/A N/A N/A 33.0 ppb (31) N/A 1.0 ppb (1) N/A 0.44 ppb (5) 31.0 μg/m3 (28) 17.5 μg/m3 (62) 62.0
 
March 19, 2019, 1 p.m. N/A N/A N/A 31.0 ppb (29) N/A 2.0 ppb (3) N/A 0.43 ppb (5) 33.0 μg/m3 (30) 14.4 μg/m3 (55) 55.0
 
March 19, 2019, noon N/A N/A N/A 43.0 ppb (40) N/A 2.0 ppb (3) N/A 0.7 ppb (8) 39.0 μg/m3 (35) 18.1 μg/m3 (63) 63.0
 
March 19, 2019, 11 a.m. N/A N/A N/A 42.0 ppb (39) N/A 2.0 ppb (3) 0.0 ppb (0) 0.69 ppb (8) 33.0 μg/m3 (30) 18.8 μg/m3 (64) 64.0
 
March 19, 2019, 10 a.m. N/A N/A N/A 38.0 ppb (35) N/A 1.0 ppb (1) 4.0 ppb (3) 0.47 ppb (5) 23.0 μg/m3 (21) 13.3 μg/m3 (53) 53.0
 
March 19, 2019, 9 a.m. N/A N/A N/A 41.0 ppb (38) N/A 1.0 ppb (1) 4.0 ppb (3) 0.38 ppb (4) 21.0 μg/m3 (19) 13.5 μg/m3 (53) 53.0
 
March 19, 2019, 8 a.m. N/A N/A N/A 37.0 ppb (34) N/A 1.0 ppb (1) 7.0 ppb (5) 0.29 ppb (3) 23.0 μg/m3 (21) 14.6 μg/m3 (56) 56.0
 
March 19, 2019, 7 a.m. N/A N/A N/A 32.0 ppb (30) N/A 1.0 ppb (1) 11.0 ppb (8) 0.29 ppb (3) 19.0 μg/m3 (17) 12.6 μg/m3 (51) 51.0
 
March 19, 2019, 6 a.m. N/A N/A N/A 25.0 ppb (23) N/A 1.0 ppb (1) 18.0 ppb (14) 0.27 ppb (3) 19.0 μg/m3 (17) 11.9 μg/m3 (50) 50.0
 
March 19, 2019, 5 a.m. N/A N/A N/A 26.0 ppb (24) N/A 1.0 ppb (1) 21.0 ppb (16) 0.27 ppb (3) 16.0 μg/m3 (15) 11.0 μg/m3 (46) 46.0
 
March 19, 2019, 4 a.m. N/A N/A N/A 14.0 ppb (13) N/A 1.0 ppb (1) 33.0 ppb (25) 0.25 ppb (3) 15.0 μg/m3 (14) 8.3 μg/m3 (35) 35.0
 
March 19, 2019, 3 a.m. N/A N/A N/A 12.0 ppb (11) N/A 1.0 ppb (1) 38.0 ppb (29) 0.25 ppb (3) 14.0 μg/m3 (13) 6.5 μg/m3 (27) 29.0
 
March 19, 2019, 2 a.m. N/A N/A N/A 15.0 ppb (14) N/A 1.0 ppb (1) 35.0 ppb (27) 0.23 ppb (3) 13.0 μg/m3 (12) 6.6 μg/m3 (28) 28.0
 
March 19, 2019, 1 a.m. N/A N/A N/A 13.0 ppb (12) N/A 0.0 ppb (0) 39.0 ppb (30) 0.22 ppb (2) 13.0 μg/m3 (12) 5.8 μg/m3 (24) 30.0
 
March 19, 2019, midnight N/A N/A N/A 7.0 ppb (6) N/A 0.0 ppb (0) 46.0 ppb (35) 0.21 ppb (2) 9.0 μg/m3 (8) 5.0 μg/m3 (21) 35.0
 
March 18, 2019, 11 p.m. N/A N/A N/A 4.0 ppb (4) N/A 1.0 ppb (1) 49.0 ppb (38) 0.17 ppb (2) 10.0 μg/m3 (9) 4.5 μg/m3 (19) 38.0
 
March 18, 2019, 10 p.m. N/A N/A N/A 3.0 ppb (3) N/A 1.0 ppb (1) 50.0 ppb (38) 0.16 ppb (2) 9.0 μg/m3 (8) 4.4 μg/m3 (18) 38.0
 
March 18, 2019, 9 p.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 50.0 ppb (38) 0.16 ppb (2) 9.0 μg/m3 (8) 4.0 μg/m3 (17) 38.0
 
March 18, 2019, 8 p.m. N/A N/A N/A 3.0 ppb (3) N/A 1.0 ppb (1) 51.0 ppb (39) 0.17 ppb (2) 11.0 μg/m3 (10) 4.1 μg/m3 (17) 39.0
 
March 18, 2019, 7 p.m. N/A N/A N/A 3.0 ppb (3) N/A 1.0 ppb (1) 51.0 ppb (39) 0.15 ppb (2) 8.0 μg/m3 (7) 4.4 μg/m3 (18) 39.0
 
March 18, 2019, 6 p.m. N/A N/A N/A 2.0 ppb (2) N/A 1.0 ppb (1) 50.0 ppb (38) 0.15 ppb (2) 11.0 μg/m3 (10) 5.2 μg/m3 (22) 38.0
 
March 18, 2019, 5 p.m. N/A N/A N/A 3.0 ppb (3) N/A 1.0 ppb (1) 50.0 ppb (38) 0.14 ppb (2) 13.0 μg/m3 (12) 5.3 μg/m3 (22) 38.0
 
March 18, 2019, 4 p.m. N/A N/A N/A 4.0 ppb (4) N/A 1.0 ppb (1) 48.0 ppb (37) 0.15 ppb (2) 12.0 μg/m3 (11) 7.1 μg/m3 (30) 37.0
 
March 18, 2019, 3 p.m. N/A N/A N/A 4.0 ppb (4) N/A 1.0 ppb (1) 48.0 ppb (37) 0.15 ppb (2) 13.0 μg/m3 (12) 7.7 μg/m3 (32) 37.0
 
March 18, 2019, 2 p.m. N/A N/A N/A 11.0 ppb (10) N/A 1.0 ppb (1) 36.0 ppb (28) 0.2 ppb (2) 19.0 μg/m3 (17) 10.6 μg/m3 (44) 44.0
 
March 18, 2019, 1 p.m. N/A N/A N/A 15.0 ppb (14) N/A 1.0 ppb (1) 25.0 ppb (19) 0.3 ppb (3) 22.0 μg/m3 (20) 12.9 μg/m3 (52) 52.0
 
March 18, 2019, noon N/A N/A N/A 14.0 ppb (13) N/A 0.0 ppb (0) 24.0 ppb (18) 0.26 ppb (3) 16.0 μg/m3 (15) 11.3 μg/m3 (47) 47.0
 
March 18, 2019, 11 a.m. N/A N/A N/A 16.0 ppb (15) N/A 0.0 ppb (0) 21.0 ppb (16) 0.27 ppb (3) 17.0 μg/m3 (15) 10.2 μg/m3 (42) 42.0
 
March 18, 2019, 10 a.m. N/A N/A N/A 24.0 ppb (22) N/A 0.0 ppb (0) 17.0 ppb (13) 0.24 ppb (3) 15.0 μg/m3 (14) 10.0 μg/m3 (42) 42.0
 
March 18, 2019, 9 a.m. N/A N/A N/A 22.0 ppb (20) N/A 0.0 ppb (0) 20.0 ppb (15) 0.2 ppb (2) 15.0 μg/m3 (14) 15.6 μg/m3 (58) 58.0
 
March 18, 2019, 8 a.m. N/A N/A N/A 21.0 ppb (19) N/A 0.0 ppb (0) 22.0 ppb (17) 0.21 ppb (2) 14.0 μg/m3 (13) 16.0 μg/m3 (59) 59.0
 
March 18, 2019, 7 a.m. N/A N/A N/A 15.0 ppb (14) N/A 0.0 ppb (0) 25.0 ppb (19) 0.23 ppb (3) 15.0 μg/m3 (14) 15.5 μg/m3 (57) 57.0
 
March 18, 2019, 6 a.m. N/A N/A N/A 9.0 ppb (8) N/A 0.0 ppb (0) 31.0 ppb (24) 0.16 ppb (2) 14.0 μg/m3 (13) 15.8 μg/m3 (58) 58.0
 
March 18, 2019, 5 a.m. N/A N/A N/A 8.0 ppb (7) N/A 0.0 ppb (0) 33.0 ppb (25) 0.15 ppb (2) 13.0 μg/m3 (12) 13.7 μg/m3 (54) 54.0
 
March 18, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 13.0 μg/m3 (12) 10.6 μg/m3 (44) 44.0
 
March 18, 2019, 3 a.m. N/A N/A N/A 5.0 ppb (5) N/A 1.0 ppb (1) 40.0 ppb (31) 0.15 ppb (2) 10.0 μg/m3 (9) 9.9 μg/m3 (41) 41.0
 
March 18, 2019, 2 a.m. N/A N/A N/A 6.0 ppb (6) N/A 1.0 ppb (1) 36.0 ppb (28) 0.17 ppb (2) 15.0 μg/m3 (14) 13.1 μg/m3 (52) 52.0
 
March 18, 2019, 1 a.m. N/A N/A N/A 7.0 ppb (6) N/A 1.0 ppb (1) 37.0 ppb (28) 0.18 ppb (2) 18.0 μg/m3 (16) 12.7 μg/m3 (51) 51.0
 
March 18, 2019, midnight N/A N/A N/A 7.0 ppb (6) N/A 1.0 ppb (1) 37.0 ppb (28) 0.18 ppb (2) 17.0 μg/m3 (15) 13.0 μg/m3 (52) 52.0
 
March 17, 2019, 11 p.m. N/A N/A N/A 7.0 ppb (6) N/A 1.0 ppb (1) 39.0 ppb (30) 0.18 ppb (2) 13.0 μg/m3 (12) 9.5 μg/m3 (40) 40.0
 
March 17, 2019, 10 p.m. N/A N/A N/A 4.0 ppb (4) N/A 1.0 ppb (1) 47.0 ppb (36) 0.15 ppb (2) 13.0 μg/m3 (12) 6.7 μg/m3 (28) 36.0
 
March 17, 2019, 9 p.m. N/A N/A N/A 5.0 ppb (5) N/A 1.0 ppb (1) 47.0 ppb (36) 0.16 ppb (2) 12.0 μg/m3 (11) 6.2 μg/m3 (26) 36.0
 
March 17, 2019, 8 p.m. N/A N/A N/A 5.0 ppb (5) N/A 1.0 ppb (1) 47.0 ppb (36) 0.15 ppb (2) 11.0 μg/m3 (10) 5.0 μg/m3 (21) 36.0
 
March 17, 2019, 7 p.m. N/A N/A N/A 3.0 ppb (3) N/A 1.0 ppb (1) 48.0 ppb (37) 0.15 ppb (2) 7.0 μg/m3 (6) 4.4 μg/m3 (18) 37.0
 
March 17, 2019, 6 p.m. N/A N/A N/A 4.0 ppb (4) N/A 1.0 ppb (1) 44.0 ppb (34) 0.17 ppb (2) 8.0 μg/m3 (7) 7.6 μg/m3 (32) 34.0
 
March 17, 2019, 5 p.m. N/A N/A N/A 4.0 ppb (4) N/A 1.0 ppb (1) 42.0 ppb (32) 0.16 ppb (2) 11.0 μg/m3 (10) 9.2 μg/m3 (38) 38.0
 
March 17, 2019, 4 p.m. N/A N/A N/A 6.0 ppb (6) N/A 1.0 ppb (1) 39.0 ppb (30) 0.18 ppb (2) 12.0 μg/m3 (11) 9.1 μg/m3 (38) 38.0
 
March 17, 2019, 3 p.m. N/A N/A N/A 9.0 ppb (8) N/A 1.0 ppb (1) 31.0 ppb (24) 0.23 ppb (3) 14.0 μg/m3 (13) 12.9 μg/m3 (52) 52.0
 
March 17, 2019, 2 p.m. N/A N/A N/A 15.0 ppb (14) N/A 1.0 ppb (1) 22.0 ppb (17) 0.28 ppb (3) 22.0 μg/m3 (20) 15.4 μg/m3 (57) 57.0
 
March 17, 2019, 1 p.m. N/A N/A N/A 19.0 ppb (18) N/A 1.0 ppb (1) 14.0 ppb (11) 0.34 ppb (4) 19.0 μg/m3 (17) 15.5 μg/m3 (57) 57.0
 
March 17, 2019, noon N/A N/A N/A 24.0 ppb (22) N/A 1.0 ppb (1) 6.0 ppb (5) 0.45 ppb (5) 19.0 μg/m3 (17) 16.2 μg/m3 (59) 59.0
 
March 17, 2019, 11 a.m. N/A N/A N/A 28.0 ppb (26) N/A 1.0 ppb (1) 1.0 ppb (1) 0.46 ppb (5) 21.0 μg/m3 (19) 15.2 μg/m3 (57) 57.0
 
March 17, 2019, 10 a.m. N/A N/A N/A 30.0 ppb (28) N/A 1.0 ppb (1) 1.0 ppb (1) 0.47 ppb (5) 23.0 μg/m3 (21) 16.1 μg/m3 (59) 59.0
 
March 17, 2019, 9 a.m. N/A N/A N/A 32.0 ppb (30) N/A 1.0 ppb (1) 1.0 ppb (1) 0.47 ppb (5) 23.0 μg/m3 (21) 17.3 μg/m3 (61) 61.0
 
March 17, 2019, 8 a.m. N/A N/A N/A 35.0 ppb (32) N/A 1.0 ppb (1) 1.0 ppb (1) 0.59 ppb (7) 25.0 μg/m3 (23) 17.9 μg/m3 (63) 63.0
 
March 17, 2019, 7 a.m. N/A N/A N/A 39.0 ppb (36) N/A 1.0 ppb (1) 1.0 ppb (1) 0.63 ppb (7) 22.0 μg/m3 (20) 14.7 μg/m3 (56) 56.0
 
March 17, 2019, 6 a.m. N/A N/A N/A 25.0 ppb (23) N/A 1.0 ppb (1) 16.0 ppb (12) 0.29 ppb (3) 15.0 μg/m3 (14) 10.1 μg/m3 (42) 42.0
 
March 17, 2019, 5 a.m. N/A N/A N/A 14.0 ppb (13) N/A 1.0 ppb (1) 29.0 ppb (22) 0.27 ppb (3) 12.0 μg/m3 (11) 8.1 μg/m3 (34) 34.0
 
March 17, 2019, 4 a.m. N/A N/A N/A 9.0 ppb (8) N/A 1.0 ppb (1) 36.0 ppb (28) 0.23 ppb (3) 18.0 μg/m3 (16) 12.1 μg/m3 (50) 50.0
 
March 17, 2019, 3 a.m. N/A N/A N/A 10.0 ppb (9) N/A 1.0 ppb (1) 37.0 ppb (28) 0.23 ppb (3) 17.0 μg/m3 (15) 7.2 μg/m3 (30) 30.0
 
March 17, 2019, 2 a.m. N/A N/A N/A 11.0 ppb (10) N/A 1.0 ppb (1) 35.0 ppb (27) 0.25 ppb (3) 14.0 μg/m3 (13) 8.2 μg/m3 (34) 34.0
 
March 17, 2019, 1 a.m. N/A N/A N/A 9.0 ppb (8) N/A 1.0 ppb (1) 39.0 ppb (30) 0.21 ppb (2) 12.0 μg/m3 (11) 7.6 μg/m3 (32) 32.0
 
March 17, 2019, midnight N/A N/A N/A 5.0 ppb (5) N/A 0.0 ppb (0) 44.0 ppb (34) 0.16 ppb (2) 12.0 μg/m3 (11) 6.1 μg/m3 (25) 34.0
 
March 16, 2019, 11 p.m. N/A N/A N/A 4.0 ppb (4) N/A 0.0 ppb (0) 47.0 ppb (36) 0.15 ppb (2) 10.0 μg/m3 (9) 6.1 μg/m3 (25) 36.0
 
March 16, 2019, 10 p.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 49.0 ppb (38) 0.14 ppb (2) 9.0 μg/m3 (8) 6.8 μg/m3 (28) 38.0
 
March 16, 2019, 9 p.m. N/A N/A N/A 3.0 ppb (3) N/A 1.0 ppb (1) 49.0 ppb (38) 0.14 ppb (2) 9.0 μg/m3 (8) 8.3 μg/m3 (35) 38.0
 
March 16, 2019, 8 p.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 48.0 ppb (37) 0.14 ppb (2) 8.0 μg/m3 (7) 8.9 μg/m3 (37) 37.0
 
March 16, 2019, 7 p.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 47.0 ppb (36) 0.14 ppb (2) 6.0 μg/m3 (5) 8.6 μg/m3 (36) 36.0
 
March 16, 2019, 6 p.m. N/A N/A N/A 3.0 ppb (3) N/A 1.0 ppb (1) 45.0 ppb (35) 0.14 ppb (2) 11.0 μg/m3 (10) 9.0 μg/m3 (38) 38.0
 
March 16, 2019, 5 p.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 45.0 ppb (35) 0.14 ppb (2) 12.0 μg/m3 (11) 9.4 μg/m3 (39) 39.0
 
March 16, 2019, 4 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 44.0 ppb (34) 0.14 ppb (2) 7.0 μg/m3 (6) 8.7 μg/m3 (36) 36.0
 
March 16, 2019, 3 p.m. N/A N/A N/A 2.0 ppb (2) N/A 1.0 ppb (1) 44.0 ppb (34) 0.13 ppb (1) 8.0 μg/m3 (7) 7.9 μg/m3 (33) 34.0
 
March 16, 2019, 2 p.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 43.0 ppb (33) 0.14 ppb (2) 8.0 μg/m3 (7) 8.7 μg/m3 (36) 36.0
 
March 16, 2019, 1 p.m. N/A N/A N/A 4.0 ppb (4) N/A 1.0 ppb (1) 40.0 ppb (31) 0.15 ppb (2) 5.0 μg/m3 (5) 9.8 μg/m3 (41) 41.0
 
March 16, 2019, noon N/A N/A N/A 8.0 ppb (7) N/A 1.0 ppb (1) 33.0 ppb (25) 0.17 ppb (2) 10.0 μg/m3 (9) 7.6 μg/m3 (32) 32.0
 
March 16, 2019, 11 a.m. N/A N/A N/A 10.0 ppb (9) N/A 1.0 ppb (1) 30.0 ppb (23) 0.21 ppb (2) 9.0 μg/m3 (8) 5.6 μg/m3 (23) 23.0
 
March 16, 2019, 10 a.m. N/A N/A N/A 8.0 ppb (7) N/A 1.0 ppb (1) 32.0 ppb (25) 0.16 ppb (2) 9.0 μg/m3 (8) 4.9 μg/m3 (20) 25.0
 
March 16, 2019, 9 a.m. N/A N/A N/A 9.0 ppb (8) N/A 1.0 ppb (1) 31.0 ppb (24) 0.15 ppb (2) 8.0 μg/m3 (7) 4.4 μg/m3 (18) 24.0
 
March 16, 2019, 8 a.m. N/A N/A N/A 11.0 ppb (10) N/A 1.0 ppb (1) 29.0 ppb (22) 0.16 ppb (2) 8.0 μg/m3 (7) 4.7 μg/m3 (20) 22.0
 
March 16, 2019, 7 a.m. N/A N/A N/A 10.0 ppb (9) N/A 1.0 ppb (1) 29.0 ppb (22) 0.16 ppb (2) 10.0 μg/m3 (9) 5.2 μg/m3 (22) 22.0
 
March 16, 2019, 6 a.m. N/A N/A N/A 13.0 ppb (12) N/A 1.0 ppb (1) 27.0 ppb (21) 0.16 ppb (2) 8.0 μg/m3 (7) 5.9 μg/m3 (25) 25.0
 
March 16, 2019, 5 a.m. N/A N/A N/A 14.0 ppb (13) N/A 1.0 ppb (1) 25.0 ppb (19) 0.17 ppb (2) 9.0 μg/m3 (8) 6.3 μg/m3 (26) 26.0
 
March 16, 2019, 4 a.m. N/A N/A N/A 8.0 ppb (7) N/A 1.0 ppb (1) 33.0 ppb (25) 0.15 ppb (2) 10.0 μg/m3 (9) 6.5 μg/m3 (27) 27.0
 
March 16, 2019, 3 a.m. N/A N/A N/A 6.0 ppb (6) N/A 1.0 ppb (1) 35.0 ppb (27) 0.15 ppb (2) 9.0 μg/m3 (8) 7.3 μg/m3 (30) 30.0
 
March 16, 2019, 2 a.m. N/A N/A N/A 5.0 ppb (5) N/A 1.0 ppb (1) 37.0 ppb (28) 0.15 ppb (2) 4.0 μg/m3 (4) 7.6 μg/m3 (32) 32.0
 
March 16, 2019, 1 a.m. N/A N/A N/A 3.0 ppb (3) N/A 1.0 ppb (1) 40.0 ppb (31) 0.13 ppb (1) 11.0 μg/m3 (10) 6.3 μg/m3 (26) 31.0
 
March 16, 2019, midnight N/A N/A N/A 6.0 ppb (6) N/A 2.0 ppb (3) 36.0 ppb (28) 0.14 ppb (2) 11.0 μg/m3 (10) 6.0 μg/m3 (25) 28.0