AQSQID: 390610040

Site Name: Taft

Location: Cincinnati, OH

Reporting: True, Located: True

Current AQI: 21.0

Cincinnati OH, US: 39.12886, -84.50404

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
May 21, 2019, 3 p.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 24.0 ppb (18) 0.11 ppb (1) 17.0 μg/m3 (15) 5.0 μg/m3 (21) 21.0
 
May 21, 2019, 2 p.m. N/A N/A N/A 4.0 ppb (4) N/A 0.0 ppb (0) 19.0 ppb (15) 0.11 ppb (1) 14.0 μg/m3 (13) 4.8 μg/m3 (20) 20.0
 
May 21, 2019, 1 p.m. N/A N/A N/A 5.0 ppb (5) N/A 0.0 ppb (0) N/A 0.12 ppb (1) 20.0 μg/m3 (18) 4.5 μg/m3 (19) 19.0
 
May 21, 2019, noon N/A N/A N/A 7.0 ppb (6) N/A 0.0 ppb (0) N/A 0.12 ppb (1) 11.0 μg/m3 (10) 4.2 μg/m3 (18) 18.0
 
May 21, 2019, 11 a.m. N/A N/A N/A 6.0 ppb (6) N/A 0.0 ppb (0) 14.0 ppb (11) 0.12 ppb (1) 13.0 μg/m3 (12) 3.7 μg/m3 (15) 15.0
 
May 21, 2019, 10 a.m. N/A N/A N/A 5.0 ppb (5) N/A 0.0 ppb (0) 16.0 ppb (12) 0.11 ppb (1) 16.0 μg/m3 (15) 3.9 μg/m3 (16) 16.0
 
May 21, 2019, 9 a.m. N/A N/A N/A 4.0 ppb (4) N/A 0.0 ppb (0) 18.0 ppb (14) 0.09 ppb (1) 14.0 μg/m3 (13) 4.1 μg/m3 (17) 17.0
 
May 21, 2019, 8 a.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 18.0 ppb (14) 0.09 ppb (1) 10.0 μg/m3 (9) 6.1 μg/m3 (25) 25.0
 
May 21, 2019, 7 a.m. N/A N/A N/A 8.0 ppb (7) N/A 0.0 ppb (0) 15.0 ppb (12) 0.11 ppb (1) 19.0 μg/m3 (17) 9.4 μg/m3 (39) 39.0
 
May 21, 2019, 6 a.m. N/A N/A N/A 8.0 ppb (7) N/A 0.0 ppb (0) 14.0 ppb (11) 0.12 ppb (1) 20.0 μg/m3 (18) 10.1 μg/m3 (42) 42.0
 
May 21, 2019, 5 a.m. N/A N/A N/A 6.0 ppb (6) N/A 0.0 ppb (0) 17.0 ppb (13) 0.1 ppb (1) 23.0 μg/m3 (21) 10.2 μg/m3 (42) 42.0
 
May 21, 2019, 4 a.m. N/A N/A N/A 6.0 ppb (6) N/A 0.0 ppb (0) 18.0 ppb (14) 0.1 ppb (1) 22.0 μg/m3 (20) 9.4 μg/m3 (39) 39.0
 
May 21, 2019, 3 a.m. N/A N/A N/A 9.0 ppb (8) N/A 0.0 ppb (0) 17.0 ppb (13) 0.09 ppb (1) 15.0 μg/m3 (14) 7.0 μg/m3 (29) 29.0
 
May 21, 2019, 2 a.m. N/A N/A N/A 8.0 ppb (7) N/A 0.0 ppb (0) 20.0 ppb (15) 0.1 ppb (1) 22.0 μg/m3 (20) 7.1 μg/m3 (30) 30.0
 
May 21, 2019, 1 a.m. N/A N/A N/A 5.0 ppb (5) N/A 0.0 ppb (0) 22.0 ppb (17) 0.1 ppb (1) 18.0 μg/m3 (16) 8.1 μg/m3 (34) 34.0
 
May 21, 2019, midnight N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 29.0 ppb (22) 0.09 ppb (1) 14.0 μg/m3 (13) 6.1 μg/m3 (25) 25.0
 
May 20, 2019, 11 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 36.0 ppb (28) 0.09 ppb (1) 14.0 μg/m3 (13) 4.4 μg/m3 (18) 28.0
 
May 20, 2019, 10 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 38.0 ppb (29) 0.08 ppb (1) 15.0 μg/m3 (14) 4.4 μg/m3 (18) 29.0
 
May 20, 2019, 9 p.m. N/A N/A N/A 2.0 ppb (2) N/A 1.0 ppb (1) 39.0 ppb (30) 0.09 ppb (1) 13.0 μg/m3 (12) 3.8 μg/m3 (16) 30.0
 
May 20, 2019, 8 p.m. N/A N/A N/A 3.0 ppb (3) N/A 1.0 ppb (1) 38.0 ppb (29) 0.1 ppb (1) 17.0 μg/m3 (15) 4.4 μg/m3 (18) 29.0
 
May 20, 2019, 7 p.m. N/A N/A N/A 3.0 ppb (3) N/A 2.0 ppb (3) 38.0 ppb (29) 0.1 ppb (1) 13.0 μg/m3 (12) 3.5 μg/m3 (15) 29.0
 
May 20, 2019, 6 p.m. N/A N/A N/A 3.0 ppb (3) N/A 2.0 ppb (3) 37.0 ppb (28) 0.08 ppb (1) 9.0 μg/m3 (8) 3.3 μg/m3 (14) 28.0
 
May 20, 2019, 5 p.m. N/A N/A N/A 3.0 ppb (3) N/A 2.0 ppb (3) 36.0 ppb (28) 0.08 ppb (1) 12.0 μg/m3 (11) 2.9 μg/m3 (12) 28.0
 
May 20, 2019, 4 p.m. N/A N/A N/A 3.0 ppb (3) N/A 2.0 ppb (3) 35.0 ppb (27) 0.09 ppb (1) 10.0 μg/m3 (9) 2.7 μg/m3 (11) 27.0
 
May 20, 2019, 3 p.m. N/A N/A N/A 4.0 ppb (4) N/A 2.0 ppb (3) 33.0 ppb (25) 0.1 ppb (1) 13.0 μg/m3 (12) 2.9 μg/m3 (12) 25.0
 
May 20, 2019, 2 p.m. N/A N/A N/A 4.0 ppb (4) N/A 1.0 ppb (1) 28.0 ppb (22) 0.08 ppb (1) 15.0 μg/m3 (14) 3.0 μg/m3 (12) 22.0
 
May 20, 2019, 1 p.m. N/A N/A N/A 4.0 ppb (4) N/A 1.0 ppb (1) 25.0 ppb (19) 0.09 ppb (1) 15.0 μg/m3 (14) 3.4 μg/m3 (14) 19.0
 
May 20, 2019, noon N/A N/A N/A 6.0 ppb (6) N/A 1.0 ppb (1) 21.0 ppb (16) 0.1 ppb (1) 16.0 μg/m3 (15) 3.4 μg/m3 (14) 16.0
 
May 20, 2019, 11 a.m. N/A N/A N/A 8.0 ppb (7) N/A 0.0 ppb (0) 20.0 ppb (15) 0.11 ppb (1) 28.0 μg/m3 (25) 3.9 μg/m3 (16) 25.0
 
May 20, 2019, 10 a.m. N/A N/A N/A 8.0 ppb (7) N/A 0.0 ppb (0) 22.0 ppb (17) 0.12 ppb (1) 29.0 μg/m3 (26) 5.8 μg/m3 (24) 26.0
 
May 20, 2019, 9 a.m. N/A N/A N/A 7.0 ppb (6) N/A 0.0 ppb (0) 29.0 ppb (22) 0.09 ppb (1) 21.0 μg/m3 (19) 6.0 μg/m3 (25) 25.0
 
May 20, 2019, 8 a.m. N/A N/A N/A 7.0 ppb (6) N/A 0.0 ppb (0) 32.0 ppb (25) 0.1 ppb (1) 19.0 μg/m3 (17) 7.3 μg/m3 (30) 30.0
 
May 20, 2019, 7 a.m. N/A N/A N/A 9.0 ppb (8) N/A 0.0 ppb (0) 33.0 ppb (25) 0.09 ppb (1) 21.0 μg/m3 (19) 9.2 μg/m3 (38) 38.0
 
May 20, 2019, 6 a.m. N/A N/A N/A 6.0 ppb (6) N/A 0.0 ppb (0) 38.0 ppb (29) 0.09 ppb (1) 21.0 μg/m3 (19) 7.5 μg/m3 (31) 31.0
 
May 20, 2019, 5 a.m. N/A N/A N/A 4.0 ppb (4) N/A 0.0 ppb (0) 44.0 ppb (34) 0.1 ppb (1) 19.0 μg/m3 (17) 6.8 μg/m3 (28) 34.0
 
May 20, 2019, 4 a.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 47.0 ppb (36) 0.1 ppb (1) 18.0 μg/m3 (16) 7.3 μg/m3 (30) 36.0
 
May 20, 2019, 3 a.m. N/A N/A N/A 4.0 ppb (4) N/A 0.0 ppb (0) 49.0 ppb (38) 0.09 ppb (1) 17.0 μg/m3 (15) 7.4 μg/m3 (31) 38.0
 
May 20, 2019, 2 a.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 46.0 ppb (35) 0.1 ppb (1) 21.0 μg/m3 (19) 8.2 μg/m3 (34) 35.0
 
May 20, 2019, 1 a.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 39.0 ppb (30) 0.12 ppb (1) 23.0 μg/m3 (21) 11.9 μg/m3 (50) 50.0
 
May 20, 2019, midnight N/A N/A N/A 4.0 ppb (4) N/A 0.0 ppb (0) 35.0 ppb (27) 0.12 ppb (1) 23.0 μg/m3 (21) 12.1 μg/m3 (50) 50.0
 
May 19, 2019, 11 p.m. N/A N/A N/A 4.0 ppb (4) N/A 0.0 ppb (0) 34.0 ppb (26) 0.13 ppb (1) 26.0 μg/m3 (24) 12.5 μg/m3 (51) 51.0
 
May 19, 2019, 10 p.m. N/A N/A N/A 6.0 ppb (6) N/A 0.0 ppb (0) 34.0 ppb (26) 0.13 ppb (1) 16.0 μg/m3 (15) 12.7 μg/m3 (51) 51.0
 
May 19, 2019, 9 p.m. N/A N/A N/A 6.0 ppb (6) N/A 0.0 ppb (0) 35.0 ppb (27) 0.13 ppb (1) 24.0 μg/m3 (22) 12.2 μg/m3 (50) 50.0
 
May 19, 2019, 8 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 43.0 ppb (33) 0.11 ppb (1) 27.0 μg/m3 (25) 13.0 μg/m3 (52) 52.0
 
May 19, 2019, 7 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 48.0 ppb (37) 0.1 ppb (1) 25.0 μg/m3 (23) 11.0 μg/m3 (46) 46.0
 
May 19, 2019, 6 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 46.0 ppb (35) 0.12 ppb (1) 23.0 μg/m3 (21) 10.7 μg/m3 (45) 45.0
 
May 19, 2019, 5 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 45.0 ppb (35) 0.1 ppb (1) 22.0 μg/m3 (20) 10.6 μg/m3 (44) 44.0
 
May 19, 2019, 4 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 45.0 ppb (35) 0.11 ppb (1) 23.0 μg/m3 (21) 11.3 μg/m3 (47) 47.0
 
May 19, 2019, 3 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 44.0 ppb (34) 0.11 ppb (1) 27.0 μg/m3 (25) 13.2 μg/m3 (53) 53.0
 
May 19, 2019, 2 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 42.0 ppb (32) 0.11 ppb (1) 28.0 μg/m3 (25) 15.2 μg/m3 (57) 57.0
 
May 19, 2019, 1 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 39.0 ppb (30) 0.11 ppb (1) 28.0 μg/m3 (25) 15.0 μg/m3 (56) 56.0
 
May 19, 2019, noon N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 35.0 ppb (27) 0.12 ppb (1) 24.0 μg/m3 (22) 15.1 μg/m3 (57) 57.0
 
May 19, 2019, 11 a.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 33.0 ppb (25) 0.12 ppb (1) 23.0 μg/m3 (21) 15.7 μg/m3 (58) 58.0
 
May 19, 2019, 10 a.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 35.0 ppb (27) 0.13 ppb (1) 25.0 μg/m3 (23) 16.0 μg/m3 (59) 59.0
 
May 19, 2019, 9 a.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 34.0 ppb (26) 0.12 ppb (1) 23.0 μg/m3 (21) 16.1 μg/m3 (59) 59.0
 
May 19, 2019, 8 a.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 36.0 ppb (28) 0.13 ppb (1) 26.0 μg/m3 (24) 16.2 μg/m3 (59) 59.0
 
May 19, 2019, 7 a.m. N/A N/A N/A 4.0 ppb (4) N/A 0.0 ppb (0) 35.0 ppb (27) 0.16 ppb (2) 28.0 μg/m3 (25) 15.6 μg/m3 (58) 58.0
 
May 19, 2019, 6 a.m. N/A N/A N/A 5.0 ppb (5) N/A 0.0 ppb (0) 34.0 ppb (26) 0.18 ppb (2) 24.0 μg/m3 (22) 16.6 μg/m3 (60) 60.0
 
May 19, 2019, 5 a.m. N/A N/A N/A 4.0 ppb (4) N/A 0.0 ppb (0) 36.0 ppb (28) 0.15 ppb (2) 26.0 μg/m3 (24) 16.7 μg/m3 (60) 60.0
 
May 19, 2019, 4 a.m. N/A N/A N/A 4.0 ppb (4) N/A 0.0 ppb (0) 36.0 ppb (28) 0.17 ppb (2) 27.0 μg/m3 (25) 17.2 μg/m3 (61) 61.0
 
May 19, 2019, 3 a.m. N/A N/A N/A 5.0 ppb (5) N/A 0.0 ppb (0) 37.0 ppb (28) 0.2 ppb (2) 26.0 μg/m3 (24) 18.5 μg/m3 (64) 64.0
 
May 19, 2019, 2 a.m. N/A N/A N/A 7.0 ppb (6) N/A 0.0 ppb (0) 37.0 ppb (28) 0.23 ppb (3) 34.0 μg/m3 (31) 18.6 μg/m3 (64) 64.0
 
May 19, 2019, 1 a.m. N/A N/A N/A 15.0 ppb (14) N/A 0.0 ppb (0) 30.0 ppb (23) 0.41 ppb (5) 32.0 μg/m3 (29) 18.4 μg/m3 (64) 64.0
 
May 19, 2019, midnight N/A N/A N/A 8.0 ppb (7) N/A 0.0 ppb (0) 44.0 ppb (34) 0.21 ppb (2) 26.0 μg/m3 (24) 16.8 μg/m3 (60) 60.0
 
May 18, 2019, 11 p.m. N/A N/A N/A 7.0 ppb (6) N/A 0.0 ppb (0) 45.0 ppb (35) 0.18 ppb (2) 28.0 μg/m3 (25) 16.5 μg/m3 (60) 60.0
 
May 18, 2019, 10 p.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 51.0 ppb (39) 0.15 ppb (2) 22.0 μg/m3 (20) 15.8 μg/m3 (58) 58.0
 
May 18, 2019, 9 p.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 54.0 ppb (42) 0.13 ppb (1) 24.0 μg/m3 (22) 14.3 μg/m3 (55) 55.0
 
May 18, 2019, 8 p.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 53.0 ppb (41) 0.13 ppb (1) 27.0 μg/m3 (25) 13.5 μg/m3 (53) 53.0
 
May 18, 2019, 7 p.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 54.0 ppb (42) 0.13 ppb (1) 22.0 μg/m3 (20) 14.4 μg/m3 (55) 55.0
 
May 18, 2019, 6 p.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 54.0 ppb (42) 0.14 ppb (2) 24.0 μg/m3 (22) 16.5 μg/m3 (60) 60.0
 
May 18, 2019, 5 p.m. N/A N/A N/A 4.0 ppb (4) N/A 2.0 ppb (3) 63.0 ppb (48) 0.15 ppb (2) 29.0 μg/m3 (26) 19.1 μg/m3 (65) 65.0
 
May 18, 2019, 4 p.m. N/A N/A N/A 3.0 ppb (3) N/A 1.0 ppb (1) 60.0 ppb (46) 0.14 ppb (2) 31.0 μg/m3 (28) 19.0 μg/m3 (65) 65.0
 
May 18, 2019, 3 p.m. N/A N/A N/A 4.0 ppb (4) N/A 1.0 ppb (1) 58.0 ppb (45) 0.14 ppb (2) 29.0 μg/m3 (26) 20.6 μg/m3 (68) 68.0
 
May 18, 2019, 2 p.m. N/A N/A N/A 7.0 ppb (6) N/A 2.0 ppb (3) 49.0 ppb (38) 0.15 ppb (2) 31.0 μg/m3 (28) 20.2 μg/m3 (67) 67.0
 
May 18, 2019, 1 p.m. N/A N/A N/A 11.0 ppb (10) N/A 2.0 ppb (3) 34.0 ppb (26) 0.21 ppb (2) 32.0 μg/m3 (29) 20.9 μg/m3 (69) 69.0
 
May 18, 2019, noon N/A N/A N/A 14.0 ppb (13) N/A 1.0 ppb (1) 23.0 ppb (18) 0.27 ppb (3) 34.0 μg/m3 (31) 20.8 μg/m3 (69) 69.0
 
May 18, 2019, 11 a.m. N/A N/A N/A 15.0 ppb (14) N/A 1.0 ppb (1) 16.0 ppb (12) 0.28 ppb (3) 35.0 μg/m3 (32) 21.9 μg/m3 (71) 71.0
 
May 18, 2019, 10 a.m. N/A N/A N/A 13.0 ppb (12) N/A 1.0 ppb (1) 20.0 ppb (15) 0.2 ppb (2) 34.0 μg/m3 (31) 19.9 μg/m3 (67) 67.0
 
May 18, 2019, 9 a.m. N/A N/A N/A 11.0 ppb (10) N/A 0.0 ppb (0) 19.0 ppb (15) 0.18 ppb (2) 29.0 μg/m3 (26) 18.5 μg/m3 (64) 64.0
 
May 18, 2019, 8 a.m. N/A N/A N/A 11.0 ppb (10) N/A 0.0 ppb (0) 22.0 ppb (17) 0.17 ppb (2) 30.0 μg/m3 (27) 17.7 μg/m3 (62) 62.0
 
May 18, 2019, 7 a.m. N/A N/A N/A 8.0 ppb (7) N/A 0.0 ppb (0) 19.0 ppb (15) 0.17 ppb (2) 26.0 μg/m3 (24) 15.6 μg/m3 (58) 58.0
 
May 18, 2019, 6 a.m. N/A N/A N/A 7.0 ppb (6) N/A 0.0 ppb (0) 21.0 ppb (16) 0.2 ppb (2) 27.0 μg/m3 (25) 14.4 μg/m3 (55) 55.0
 
May 18, 2019, 5 a.m. N/A N/A N/A 7.0 ppb (6) N/A 0.0 ppb (0) 25.0 ppb (19) 0.18 ppb (2) 27.0 μg/m3 (25) 13.7 μg/m3 (54) 54.0
 
May 18, 2019, 4 a.m. N/A N/A N/A 14.0 ppb (13) N/A 1.0 ppb (1) 17.0 ppb (13) 0.32 ppb (4) 30.0 μg/m3 (27) 15.2 μg/m3 (57) 57.0
 
May 18, 2019, 3 a.m. N/A N/A N/A 21.0 ppb (19) N/A 1.0 ppb (1) 10.0 ppb (8) 0.52 ppb (6) 34.0 μg/m3 (31) 16.3 μg/m3 (59) 59.0
 
May 18, 2019, 2 a.m. N/A N/A N/A 27.0 ppb (25) N/A 0.0 ppb (0) 8.0 ppb (6) 0.63 ppb (7) 36.0 μg/m3 (33) 15.7 μg/m3 (58) 58.0
 
May 18, 2019, 1 a.m. N/A N/A N/A 27.0 ppb (25) N/A 0.0 ppb (0) 10.0 ppb (8) 0.68 ppb (8) 33.0 μg/m3 (30) 15.1 μg/m3 (57) 57.0
 
May 18, 2019, midnight N/A N/A N/A 21.0 ppb (19) N/A 0.0 ppb (0) 24.0 ppb (18) 0.35 ppb (4) 29.0 μg/m3 (26) 14.6 μg/m3 (56) 56.0
 
May 17, 2019, 11 p.m. N/A N/A N/A 15.0 ppb (14) N/A 0.0 ppb (0) 35.0 ppb (27) 0.25 ppb (3) 33.0 μg/m3 (30) 13.1 μg/m3 (52) 52.0
 
May 17, 2019, 10 p.m. N/A N/A N/A 8.0 ppb (7) N/A 0.0 ppb (0) 47.0 ppb (36) 0.17 ppb (2) 21.0 μg/m3 (19) 11.7 μg/m3 (49) 49.0
 
May 17, 2019, 9 p.m. N/A N/A N/A 5.0 ppb (5) N/A 0.0 ppb (0) 51.0 ppb (39) 0.14 ppb (2) 18.0 μg/m3 (16) 11.9 μg/m3 (50) 50.0
 
May 17, 2019, 8 p.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 57.0 ppb (44) 0.11 ppb (1) 18.0 μg/m3 (16) 13.3 μg/m3 (53) 53.0
 
May 17, 2019, 7 p.m. N/A N/A N/A 4.0 ppb (4) N/A 1.0 ppb (1) 57.0 ppb (44) 0.1 ppb (1) 19.0 μg/m3 (17) 11.9 μg/m3 (50) 50.0
 
May 17, 2019, 6 p.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 57.0 ppb (44) 0.11 ppb (1) 18.0 μg/m3 (16) 11.3 μg/m3 (47) 47.0
 
May 17, 2019, 5 p.m. N/A N/A N/A 6.0 ppb (6) N/A N/A 54.0 ppb (42) 0.1 ppb (1) 20.0 μg/m3 (18) 11.2 μg/m3 (47) 47.0
 
May 17, 2019, 4 p.m. N/A N/A N/A 14.0 ppb (13) N/A N/A 41.0 ppb (32) 0.13 ppb (1) 35.0 μg/m3 (32) 14.1 μg/m3 (54) 54.0
 
May 17, 2019, 3 p.m. N/A N/A N/A 8.0 ppb (7) N/A N/A 42.0 ppb (32) 0.13 ppb (1) 25.0 μg/m3 (23) 15.3 μg/m3 (57) 57.0
 
May 17, 2019, 2 p.m. N/A N/A N/A 12.0 ppb (11) N/A N/A 33.0 ppb (25) 0.17 ppb (2) 32.0 μg/m3 (29) 16.3 μg/m3 (59) 59.0
 
May 17, 2019, 1 p.m. N/A N/A N/A 15.0 ppb (14) N/A N/A 24.0 ppb (18) 0.2 ppb (2) 34.0 μg/m3 (31) 15.7 μg/m3 (58) 58.0
 
May 17, 2019, noon N/A N/A N/A 13.0 ppb (12) N/A N/A 25.0 ppb (19) 0.2 ppb (2) 27.0 μg/m3 (25) 14.8 μg/m3 (56) 56.0
 
May 17, 2019, 11 a.m. N/A N/A N/A 16.0 ppb (15) N/A 0.0 ppb (0) 24.0 ppb (18) 0.22 ppb (2) 29.0 μg/m3 (26) 14.5 μg/m3 (55) 55.0
 
May 17, 2019, 10 a.m. N/A N/A N/A 14.0 ppb (13) N/A 0.0 ppb (0) 23.0 ppb (18) 0.19 ppb (2) 26.0 μg/m3 (24) 12.6 μg/m3 (51) 51.0
 
May 17, 2019, 9 a.m. N/A N/A N/A 8.0 ppb (7) N/A 0.0 ppb (0) 33.0 ppb (25) 0.11 ppb (1) 24.0 μg/m3 (22) 9.9 μg/m3 (41) 41.0
 
May 17, 2019, 8 a.m. N/A N/A N/A 6.0 ppb (6) N/A 0.0 ppb (0) 37.0 ppb (28) 0.08 ppb (1) 19.0 μg/m3 (17) 7.0 μg/m3 (29) 29.0
 
May 17, 2019, 7 a.m. N/A N/A N/A 6.0 ppb (6) N/A 0.0 ppb (0) 37.0 ppb (28) 0.08 ppb (1) 14.0 μg/m3 (13) 4.3 μg/m3 (18) 28.0
 
May 17, 2019, 6 a.m. N/A N/A N/A 6.0 ppb (6) N/A 0.0 ppb (0) 37.0 ppb (28) 0.09 ppb (1) 12.0 μg/m3 (11) 3.9 μg/m3 (16) 28.0
 
May 17, 2019, 5 a.m. N/A N/A N/A 6.0 ppb (6) N/A 0.0 ppb (0) 33.0 ppb (25) 0.11 ppb (1) 19.0 μg/m3 (17) 6.5 μg/m3 (27) 27.0
 
May 17, 2019, 4 a.m. N/A N/A N/A 7.0 ppb (6) N/A 0.0 ppb (0) 36.0 ppb (28) 0.12 ppb (1) 17.0 μg/m3 (15) 8.3 μg/m3 (35) 35.0
 
May 17, 2019, 3 a.m. N/A N/A N/A 10.0 ppb (9) N/A 0.0 ppb (0) 37.0 ppb (28) 0.14 ppb (2) 21.0 μg/m3 (19) 10.2 μg/m3 (42) 42.0
 
May 17, 2019, 2 a.m. N/A N/A N/A 9.0 ppb (8) N/A 0.0 ppb (0) 40.0 ppb (31) 0.15 ppb (2) 22.0 μg/m3 (20) 13.0 μg/m3 (52) 52.0
 
May 17, 2019, 1 a.m. N/A N/A N/A 15.0 ppb (14) N/A 0.0 ppb (0) 33.0 ppb (25) 0.22 ppb (2) 26.0 μg/m3 (24) 16.3 μg/m3 (59) 59.0
 
May 17, 2019, midnight N/A N/A N/A 10.0 ppb (9) N/A 0.0 ppb (0) 39.0 ppb (30) 0.21 ppb (2) 21.0 μg/m3 (19) 14.2 μg/m3 (55) 55.0
 
May 16, 2019, 11 p.m. N/A N/A N/A 10.0 ppb (9) N/A 0.0 ppb (0) 46.0 ppb (35) 0.18 ppb (2) 19.0 μg/m3 (17) 8.6 μg/m3 (36) 36.0
 
May 16, 2019, 10 p.m. N/A N/A N/A 7.0 ppb (6) N/A 0.0 ppb (0) 53.0 ppb (41) 0.14 ppb (2) 20.0 μg/m3 (18) 7.1 μg/m3 (30) 41.0
 
May 16, 2019, 9 p.m. N/A N/A N/A 4.0 ppb (4) N/A 0.0 ppb (0) 56.0 ppb (43) 0.12 ppb (1) 17.0 μg/m3 (15) 6.6 μg/m3 (28) 43.0
 
May 16, 2019, 8 p.m. N/A N/A N/A 5.0 ppb (5) N/A 0.0 ppb (0) 59.0 ppb (45) 0.13 ppb (1) 20.0 μg/m3 (18) 7.2 μg/m3 (30) 45.0
 
May 16, 2019, 7 p.m. N/A N/A N/A 5.0 ppb (5) N/A 0.0 ppb (0) 58.0 ppb (45) 0.12 ppb (1) 13.0 μg/m3 (12) 7.2 μg/m3 (30) 45.0
 
May 16, 2019, 6 p.m. N/A N/A N/A 5.0 ppb (5) N/A N/A 56.0 ppb (43) 0.11 ppb (1) 23.0 μg/m3 (21) 7.5 μg/m3 (31) 43.0
 
May 16, 2019, 5 p.m. N/A N/A N/A 5.0 ppb (5) N/A N/A 56.0 ppb (43) 0.12 ppb (1) 26.0 μg/m3 (24) 10.2 μg/m3 (42) 43.0
 
May 16, 2019, 4 p.m. N/A N/A N/A 6.0 ppb (6) N/A 1.0 ppb (1) 50.0 ppb (38) 0.13 ppb (1) 22.0 μg/m3 (20) 11.1 μg/m3 (46) 46.0
 
May 16, 2019, 3 p.m. N/A N/A N/A 9.0 ppb (8) N/A 1.0 ppb (1) 46.0 ppb (35) 0.15 ppb (2) 26.0 μg/m3 (24) 18.7 μg/m3 (64) 64.0
 
May 16, 2019, 2 p.m. N/A N/A N/A 12.0 ppb (11) N/A 1.0 ppb (1) 38.0 ppb (29) 0.18 ppb (2) 32.0 μg/m3 (29) 31.4 μg/m3 (91) 91.0
 
May 16, 2019, 1 p.m. N/A N/A N/A 19.0 ppb (18) N/A 1.0 ppb (1) 22.0 ppb (17) 0.25 ppb (3) 36.0 μg/m3 (33) 37.6 μg/m3 (105) 105.0
 
May 16, 2019, noon N/A N/A N/A 21.0 ppb (19) N/A 1.0 ppb (1) N/A 0.28 ppb (3) 37.0 μg/m3 (34) 29.0 μg/m3 (86) 86.0
 
May 16, 2019, 11 a.m. N/A N/A N/A 20.0 ppb (19) N/A 0.0 ppb (0) 14.0 ppb (11) 0.35 ppb (4) 33.0 μg/m3 (30) 20.7 μg/m3 (69) 69.0
 
May 16, 2019, 10 a.m. N/A N/A N/A 15.0 ppb (14) N/A 0.0 ppb (0) 21.0 ppb (16) 0.17 ppb (2) 27.0 μg/m3 (25) 17.2 μg/m3 (61) 61.0
 
May 16, 2019, 9 a.m. N/A N/A N/A 13.0 ppb (12) N/A 0.0 ppb (0) 24.0 ppb (18) 0.14 ppb (2) 24.0 μg/m3 (22) 14.8 μg/m3 (56) 56.0
 
May 16, 2019, 8 a.m. N/A N/A N/A 13.0 ppb (12) N/A 0.0 ppb (0) 27.0 ppb (21) 0.15 ppb (2) 25.0 μg/m3 (23) 14.8 μg/m3 (56) 56.0
 
May 16, 2019, 7 a.m. N/A N/A N/A 12.0 ppb (11) N/A 0.0 ppb (0) 30.0 ppb (23) 0.15 ppb (2) 24.0 μg/m3 (22) 13.7 μg/m3 (54) 54.0
 
May 16, 2019, 6 a.m. N/A N/A N/A 12.0 ppb (11) N/A 0.0 ppb (0) 27.0 ppb (21) 0.16 ppb (2) 25.0 μg/m3 (23) 16.3 μg/m3 (59) 59.0
 
May 16, 2019, 5 a.m. N/A N/A N/A 21.0 ppb (19) N/A 0.0 ppb (0) 19.0 ppb (15) 0.23 ppb (3) 28.0 μg/m3 (25) 18.0 μg/m3 (63) 63.0
 
May 16, 2019, 4 a.m. N/A N/A N/A 21.0 ppb (19) N/A 0.0 ppb (0) 23.0 ppb (18) 0.23 ppb (3) 28.0 μg/m3 (25) 15.7 μg/m3 (58) 58.0
 
May 16, 2019, 3 a.m. N/A N/A N/A 14.0 ppb (13) N/A 1.0 ppb (1) 36.0 ppb (28) 0.17 ppb (2) 20.0 μg/m3 (18) 11.4 μg/m3 (48) 48.0
 
May 16, 2019, 2 a.m. N/A N/A N/A 17.0 ppb (16) N/A 1.0 ppb (1) 34.0 ppb (26) 0.19 ppb (2) 28.0 μg/m3 (25) 13.0 μg/m3 (52) 52.0
 
May 16, 2019, 1 a.m. N/A N/A N/A 18.0 ppb (17) N/A 1.0 ppb (1) 35.0 ppb (27) 0.18 ppb (2) 26.0 μg/m3 (24) 12.3 μg/m3 (51) 51.0
 
May 16, 2019, midnight N/A N/A N/A 11.0 ppb (10) N/A 2.0 ppb (3) 46.0 ppb (35) 0.18 ppb (2) 25.0 μg/m3 (23) 10.5 μg/m3 (44) 44.0
 
May 15, 2019, 11 p.m. N/A N/A N/A 7.0 ppb (6) N/A 2.0 ppb (3) 57.0 ppb (44) 0.15 ppb (2) 26.0 μg/m3 (24) 13.7 μg/m3 (54) 54.0
 
May 15, 2019, 10 p.m. N/A N/A N/A 7.0 ppb (6) N/A 2.0 ppb (3) 59.0 ppb (45) 0.16 ppb (2) 29.0 μg/m3 (26) 16.8 μg/m3 (60) 60.0
 
May 15, 2019, 9 p.m. N/A N/A N/A 6.0 ppb (6) N/A 2.0 ppb (3) 60.0 ppb (46) 0.14 ppb (2) 30.0 μg/m3 (27) 16.1 μg/m3 (59) 59.0
 
May 15, 2019, 8 p.m. N/A N/A N/A 5.0 ppb (5) N/A 1.0 ppb (1) 59.0 ppb (45) N/A 25.0 μg/m3 (23) 14.2 μg/m3 (55) 55.0
 
May 15, 2019, 7 p.m. N/A N/A N/A 4.0 ppb (4) N/A 1.0 ppb (1) 58.0 ppb (45) N/A 20.0 μg/m3 (18) 12.6 μg/m3 (51) 51.0
 
May 15, 2019, 6 p.m. N/A N/A N/A 5.0 ppb (5) N/A 1.0 ppb (1) 56.0 ppb (43) 0.13 ppb (1) 23.0 μg/m3 (21) 11.4 μg/m3 (48) 48.0
 
May 15, 2019, 5 p.m. N/A N/A N/A 5.0 ppb (5) N/A 1.0 ppb (1) 54.0 ppb (42) 0.12 ppb (1) 30.0 μg/m3 (27) 9.9 μg/m3 (41) 42.0
 
May 15, 2019, 4 p.m. N/A N/A N/A 5.0 ppb (5) N/A 1.0 ppb (1) 54.0 ppb (42) 0.11 ppb (1) N/A N/A 42.0
 
May 15, 2019, 3 p.m. N/A N/A N/A 10.0 ppb (9) N/A 1.0 ppb (1) 44.0 ppb (34) 0.14 ppb (2) N/A N/A 34.0
 
May 15, 2019, 2 p.m. N/A N/A N/A 22.0 ppb (20) N/A 1.0 ppb (1) 26.0 ppb (20) 0.23 ppb (3) 37.0 μg/m3 (34) 16.3 μg/m3 (59) 59.0
 
May 15, 2019, 1 p.m. N/A N/A N/A 27.0 ppb (25) N/A 1.0 ppb (1) 17.0 ppb (13) 0.3 ppb (3) 39.0 μg/m3 (35) 19.6 μg/m3 (66) 66.0
 
May 15, 2019, noon N/A N/A N/A 22.0 ppb (20) N/A 1.0 ppb (1) 17.0 ppb (13) 0.42 ppb (5) 32.0 μg/m3 (29) 17.9 μg/m3 (63) 63.0
 
May 15, 2019, 11 a.m. N/A N/A N/A 23.0 ppb (21) N/A 1.0 ppb (1) 3.0 ppb (2) 0.55 ppb (6) 31.0 μg/m3 (28) 16.3 μg/m3 (59) 59.0
 
May 15, 2019, 10 a.m. N/A N/A N/A 23.0 ppb (21) N/A 0.0 ppb (0) 2.0 ppb (2) 0.35 ppb (4) 29.0 μg/m3 (26) 15.3 μg/m3 (57) 57.0
 
May 15, 2019, 9 a.m. N/A N/A N/A 25.0 ppb (23) N/A 0.0 ppb (0) 4.0 ppb (3) 0.23 ppb (3) 25.0 μg/m3 (23) 13.3 μg/m3 (53) 53.0
 
May 15, 2019, 8 a.m. N/A N/A N/A 23.0 ppb (21) N/A 0.0 ppb (0) 6.0 ppb (5) 0.21 ppb (2) 23.0 μg/m3 (21) 13.4 μg/m3 (53) 53.0
 
May 15, 2019, 7 a.m. N/A N/A N/A 24.0 ppb (22) N/A 0.0 ppb (0) 9.0 ppb (7) 0.21 ppb (2) 21.0 μg/m3 (19) 12.3 μg/m3 (51) 51.0
 
May 15, 2019, 6 a.m. N/A N/A N/A 23.0 ppb (21) N/A 0.0 ppb (0) 13.0 ppb (10) 0.26 ppb (3) 26.0 μg/m3 (24) 11.9 μg/m3 (50) 50.0
 
May 15, 2019, 5 a.m. N/A N/A N/A 26.0 ppb (24) N/A 0.0 ppb (0) 12.0 ppb (9) 0.32 ppb (4) 28.0 μg/m3 (25) 10.8 μg/m3 (45) 45.0
 
May 15, 2019, 4 a.m. N/A N/A N/A 34.0 ppb (31) N/A 0.0 ppb (0) 3.0 ppb (2) 0.47 ppb (5) 32.0 μg/m3 (29) 10.5 μg/m3 (44) 44.0
 
May 15, 2019, 3 a.m. N/A N/A N/A 40.0 ppb (37) N/A 0.0 ppb (0) 3.0 ppb (2) 0.47 ppb (5) 32.0 μg/m3 (29) 9.7 μg/m3 (40) 40.0
 
May 15, 2019, 2 a.m. N/A N/A N/A 19.0 ppb (18) N/A 0.0 ppb (0) 32.0 ppb (25) 0.24 ppb (3) 30.0 μg/m3 (27) 6.3 μg/m3 (26) 27.0
 
May 15, 2019, 1 a.m. N/A N/A N/A 25.0 ppb (23) N/A 1.0 ppb (1) 29.0 ppb (22) 0.26 ppb (3) 22.0 μg/m3 (20) 5.4 μg/m3 (23) 23.0
 
May 15, 2019, midnight N/A N/A N/A 11.0 ppb (10) N/A 2.0 ppb (3) 45.0 ppb (35) 0.14 ppb (2) 17.0 μg/m3 (15) 4.1 μg/m3 (17) 35.0
 
May 14, 2019, 11 p.m. N/A N/A N/A 8.0 ppb (7) N/A 2.0 ppb (3) 49.0 ppb (38) 0.1 ppb (1) 23.0 μg/m3 (21) 3.5 μg/m3 (15) 38.0
 
May 14, 2019, 10 p.m. N/A N/A N/A 4.0 ppb (4) N/A 1.0 ppb (1) 53.0 ppb (41) 0.1 ppb (1) 14.0 μg/m3 (13) 3.5 μg/m3 (15) 41.0
 
May 14, 2019, 9 p.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 54.0 ppb (42) 0.1 ppb (1) 16.0 μg/m3 (15) 3.7 μg/m3 (15) 42.0
 
May 14, 2019, 8 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 54.0 ppb (42) 0.09 ppb (1) 13.0 μg/m3 (12) 4.1 μg/m3 (17) 42.0
 
May 14, 2019, 7 p.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 51.0 ppb (39) 0.1 ppb (1) 10.0 μg/m3 (9) 4.3 μg/m3 (18) 39.0
 
May 14, 2019, 6 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 51.0 ppb (39) 0.09 ppb (1) 10.0 μg/m3 (9) 4.0 μg/m3 (17) 39.0
 
May 14, 2019, 5 p.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 48.0 ppb (37) 0.11 ppb (1) 12.0 μg/m3 (11) 3.6 μg/m3 (15) 37.0
 
May 14, 2019, 4 p.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 47.0 ppb (36) 0.1 ppb (1) 20.0 μg/m3 (18) 3.2 μg/m3 (13) 36.0