AQSQID: 295100085

Site Name: Blair Street

Location: St. Louis (Buchanan St), MO

Reporting: True, Located: True

Current AQI: 33.0

St. Louis (Buchanan St) MO, US: 38.656449, -90.198548

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
Jan. 16, 2019, 4 a.m. 7.6 ppb (7) 0.6 ppb (1) 8.1 ppb (8) 7.0 ppb (6) N/A 0.0 ppb (0) 21.0 ppb (16) 0.2 ppb (2) N/A 7.9 μg/m3 (33) 33.0
 
Jan. 16, 2019, 3 a.m. 6.8 ppb (6) 0.4 ppb (0) 7.3 ppb (7) 6.0 ppb (6) N/A 0.0 ppb (0) 22.0 ppb (17) 0.18 ppb (2) N/A 9.6 μg/m3 (40) 40.0
 
Jan. 16, 2019, 2 a.m. 6.9 ppb (6) 0.4 ppb (0) 7.5 ppb (7) 7.0 ppb (6) N/A 0.0 ppb (0) 23.0 ppb (18) 0.18 ppb (2) N/A 8.9 μg/m3 (37) 37.0
 
Jan. 16, 2019, 1 a.m. 8.0 ppb (7) 0.2 ppb (0) 9.0 ppb (8) 8.0 ppb (7) N/A 0.0 ppb (0) 22.0 ppb (17) 0.2 ppb (2) N/A 12.1 μg/m3 (50) 50.0
 
Jan. 16, 2019, midnight 8.8 ppb (8) 0.7 ppb (1) 9.3 ppb (9) 8.0 ppb (7) N/A 0.0 ppb (0) 22.0 ppb (17) 0.23 ppb (3) N/A 16.5 μg/m3 (60) 60.0
 
Jan. 15, 2019, 11 p.m. N/A N/A 10.8 ppb (10) N/A N/A 0.0 ppb (0) 20.0 ppb (15) 0.24 ppb (3) N/A 14.5 μg/m3 (55) 55.0
 
Jan. 15, 2019, 10 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) N/A 0.25 ppb (3) N/A 14.2 μg/m3 (55) 55.0
 
Jan. 15, 2019, 9 p.m. 9.9 ppb (9) 2.6 ppb (2) N/A 7.0 ppb (6) N/A N/A 21.0 ppb (16) 0.21 ppb (2) N/A 12.3 μg/m3 (51) 51.0
 
Jan. 15, 2019, 8 p.m. 19.1 ppb (18) 8.9 ppb (8) N/A 10.0 ppb (9) N/A N/A 20.0 ppb (15) N/A N/A 10.2 μg/m3 (42) 42.0
 
Jan. 15, 2019, 7 p.m. 14.0 ppb (13) 5.4 ppb (5) N/A 9.0 ppb (8) N/A 0.0 ppb (0) 21.0 ppb (16) N/A N/A 7.3 μg/m3 (30) 30.0
 
Jan. 15, 2019, 6 p.m. 8.6 ppb (8) 3.1 ppb (3) 9.4 ppb (9) 6.0 ppb (6) N/A 1.0 ppb (1) 23.0 ppb (18) 0.22 ppb (2) N/A 8.5 μg/m3 (35) 35.0
 
Jan. 15, 2019, 5 p.m. 9.0 ppb (8) 3.5 ppb (3) 9.2 ppb (9) 6.0 ppb (6) N/A 1.0 ppb (1) 24.0 ppb (18) 0.22 ppb (2) N/A 10.8 μg/m3 (45) 45.0
 
Jan. 15, 2019, 4 p.m. 9.7 ppb (9) 2.6 ppb (2) 9.6 ppb (9) 7.0 ppb (6) N/A 4.0 ppb (6) 23.0 ppb (18) 0.21 ppb (2) N/A 9.0 μg/m3 (38) 38.0
 
Jan. 15, 2019, 3 p.m. 9.9 ppb (9) 2.1 ppb (2) 10.4 ppb (10) 8.0 ppb (7) N/A 4.0 ppb (6) 22.0 ppb (17) 0.25 ppb (3) N/A 8.3 μg/m3 (35) 35.0
 
Jan. 15, 2019, 2 p.m. 12.5 ppb (12) 2.4 ppb (2) 12.3 ppb (11) 10.0 ppb (9) N/A 5.0 ppb (7) 22.0 ppb (17) 0.21 ppb (2) N/A 15.2 μg/m3 (57) 57.0
 
Jan. 15, 2019, 1 p.m. 11.3 ppb (10) 2.8 ppb (3) 10.5 ppb (10) 9.0 ppb (8) N/A 6.0 ppb (9) 22.0 ppb (17) 0.19 ppb (2) N/A 10.6 μg/m3 (44) 44.0
 
Jan. 15, 2019, noon 8.6 ppb (8) 1.1 ppb (1) 8.1 ppb (8) 8.0 ppb (7) N/A 4.0 ppb (6) 25.0 ppb (19) 0.22 ppb (2) N/A 11.5 μg/m3 (48) 48.0
 
Jan. 15, 2019, 11 a.m. 6.3 ppb (6) 0.6 ppb (1) 6.8 ppb (6) 6.0 ppb (6) N/A N/A 26.0 ppb (20) 0.19 ppb (2) N/A 9.6 μg/m3 (40) 40.0
 
Jan. 15, 2019, 10 a.m. 6.4 ppb (6) 0.2 ppb (0) 6.8 ppb (6) 6.0 ppb (6) N/A N/A 26.0 ppb (20) 0.2 ppb (2) N/A 10.9 μg/m3 (45) 45.0
 
Jan. 15, 2019, 9 a.m. 5.1 ppb (5) 0.2 ppb (0) 5.6 ppb (5) 5.0 ppb (5) N/A 9.0 ppb (13) 27.0 ppb (21) 0.19 ppb (2) N/A 8.2 μg/m3 (34) 34.0
 
Jan. 15, 2019, 8 a.m. 5.9 ppb (5) 0.2 ppb (0) 6.3 ppb (6) 6.0 ppb (6) N/A 8.0 ppb (11) 27.0 ppb (21) 0.21 ppb (2) N/A 10.1 μg/m3 (42) 42.0
 
Jan. 15, 2019, 7 a.m. 6.7 ppb (6) 0.5 ppb (0) 7.1 ppb (7) 6.0 ppb (6) N/A 10.0 ppb (14) 27.0 ppb (21) 0.21 ppb (2) N/A 12.5 μg/m3 (51) 51.0
 
Jan. 15, 2019, 6 a.m. 6.9 ppb (6) 0.2 ppb (0) 7.5 ppb (7) 7.0 ppb (6) N/A 9.0 ppb (13) 28.0 ppb (22) 0.22 ppb (2) N/A 12.9 μg/m3 (52) 52.0
 
Jan. 15, 2019, 5 a.m. 8.4 ppb (8) 0.3 ppb (0) 9.5 ppb (9) 8.0 ppb (7) N/A 9.0 ppb (13) 27.0 ppb (21) 0.24 ppb (3) N/A 16.1 μg/m3 (59) 59.0
 
Jan. 15, 2019, 4 a.m. 8.6 ppb (8) 0.4 ppb (0) 9.9 ppb (9) 8.0 ppb (7) N/A 9.0 ppb (13) 27.0 ppb (21) 0.25 ppb (3) N/A 14.6 μg/m3 (56) 56.0
 
Jan. 15, 2019, 3 a.m. 6.4 ppb (6) 0.3 ppb (0) 7.9 ppb (7) 6.0 ppb (6) N/A 4.0 ppb (6) 30.0 ppb (23) 0.22 ppb (2) N/A 17.5 μg/m3 (62) 62.0
 
Jan. 15, 2019, 2 a.m. 5.8 ppb (5) 0.3 ppb (0) 7.0 ppb (6) 6.0 ppb (6) N/A 2.0 ppb (3) 32.0 ppb (25) 0.21 ppb (2) N/A 11.2 μg/m3 (47) 47.0
 
Jan. 15, 2019, 1 a.m. 6.7 ppb (6) 0.6 ppb (1) 8.0 ppb (7) 6.0 ppb (6) N/A 1.0 ppb (1) 31.0 ppb (24) 0.22 ppb (2) N/A 15.6 μg/m3 (58) 58.0
 
Jan. 15, 2019, midnight 9.4 ppb (9) 0.8 ppb (1) 11.0 ppb (10) 9.0 ppb (8) N/A 1.0 ppb (1) 27.0 ppb (21) 0.23 ppb (3) N/A 14.1 μg/m3 (54) 54.0
 
Jan. 14, 2019, 11 p.m. 10.0 ppb (9) 0.6 ppb (1) 11.8 ppb (11) 9.0 ppb (8) N/A 1.0 ppb (1) 27.0 ppb (21) 0.25 ppb (3) N/A 18.2 μg/m3 (63) 63.0
 
Jan. 14, 2019, 10 p.m. 10.6 ppb (10) 1.2 ppb (1) 11.8 ppb (11) 9.0 ppb (8) N/A 4.0 ppb (6) 30.0 ppb (23) 0.25 ppb (3) N/A 13.9 μg/m3 (54) 54.0
 
Jan. 14, 2019, 9 p.m. 15.1 ppb (14) 2.7 ppb (3) 17.1 ppb (16) 12.0 ppb (11) N/A 4.0 ppb (6) 30.0 ppb (23) 0.27 ppb (3) N/A 14.5 μg/m3 (55) 55.0
 
Jan. 14, 2019, 8 p.m. 12.1 ppb (11) 3.4 ppb (3) 14.6 ppb (14) 9.0 ppb (8) N/A 0.0 ppb (0) 33.0 ppb (25) 0.23 ppb (3) N/A 17.3 μg/m3 (61) 61.0
 
Jan. 14, 2019, 7 p.m. 14.7 ppb (14) 5.3 ppb (5) 17.4 ppb (16) 10.0 ppb (9) N/A 0.0 ppb (0) 33.0 ppb (25) 0.22 ppb (2) N/A 13.1 μg/m3 (52) 52.0
 
Jan. 14, 2019, 6 p.m. 11.3 ppb (10) 4.2 ppb (4) 13.6 ppb (13) 7.0 ppb (6) N/A 0.0 ppb (0) 35.0 ppb (27) 0.21 ppb (2) N/A 12.5 μg/m3 (51) 51.0
 
Jan. 14, 2019, 5 p.m. 21.0 ppb (19) 8.9 ppb (8) 21.8 ppb (20) 12.0 ppb (11) N/A 0.0 ppb (0) 32.0 ppb (25) 0.23 ppb (3) N/A 17.6 μg/m3 (62) 62.0
 
Jan. 14, 2019, 4 p.m. 15.6 ppb (14) 4.8 ppb (4) 18.1 ppb (17) 11.0 ppb (10) N/A 0.0 ppb (0) 30.0 ppb (23) 0.22 ppb (2) N/A 17.8 μg/m3 (62) 62.0
 
Jan. 14, 2019, 3 p.m. 24.7 ppb (23) 8.1 ppb (8) 22.2 ppb (21) 17.0 ppb (16) N/A 0.0 ppb (0) 26.0 ppb (20) 0.31 ppb (3) N/A 18.4 μg/m3 (64) 64.0
 
Jan. 14, 2019, 2 p.m. 15.1 ppb (14) 3.5 ppb (3) 15.6 ppb (14) 12.0 ppb (11) N/A 0.0 ppb (0) 29.0 ppb (22) 0.28 ppb (3) N/A 14.3 μg/m3 (55) 55.0
 
Jan. 14, 2019, 1 p.m. 14.7 ppb (14) 0.7 ppb (1) 17.0 ppb (16) 14.0 ppb (13) N/A 0.0 ppb (0) 26.0 ppb (20) 0.21 ppb (2) N/A 12.7 μg/m3 (51) 51.0
 
Jan. 14, 2019, noon 11.6 ppb (11) 0.5 ppb (0) 13.8 ppb (13) 11.0 ppb (10) N/A 0.0 ppb (0) 27.0 ppb (21) 0.2 ppb (2) N/A 15.2 μg/m3 (57) 57.0
 
Jan. 14, 2019, 11 a.m. 6.7 ppb (6) 0.6 ppb (1) 8.8 ppb (8) 6.0 ppb (6) N/A 0.0 ppb (0) 30.0 ppb (23) N/A N/A 13.2 μg/m3 (53) 53.0
 
Jan. 14, 2019, 10 a.m. 6.1 ppb (6) 0.2 ppb (0) 8.1 ppb (8) 6.0 ppb (6) N/A 0.0 ppb (0) 30.0 ppb (23) N/A N/A 15.0 μg/m3 (56) 56.0
 
Jan. 14, 2019, 9 a.m. 8.1 ppb (8) 0.2 ppb (0) 10.1 ppb (9) 8.0 ppb (7) N/A 0.0 ppb (0) 29.0 ppb (22) 0.21 ppb (2) N/A 10.3 μg/m3 (43) 43.0
 
Jan. 14, 2019, 8 a.m. 8.5 ppb (8) 0.2 ppb (0) 10.8 ppb (10) 8.0 ppb (7) N/A 0.0 ppb (0) 28.0 ppb (22) 0.21 ppb (2) N/A 13.7 μg/m3 (54) 54.0
 
Jan. 14, 2019, 7 a.m. 7.3 ppb (7) 0.2 ppb (0) 9.7 ppb (9) 7.0 ppb (6) N/A 0.0 ppb (0) 30.0 ppb (23) 0.21 ppb (2) N/A 11.8 μg/m3 (49) 49.0
 
Jan. 14, 2019, 6 a.m. 8.3 ppb (8) 0.2 ppb (0) 10.8 ppb (10) 8.0 ppb (7) N/A 0.0 ppb (0) 30.0 ppb (23) 0.22 ppb (2) N/A 12.5 μg/m3 (51) 51.0
 
Jan. 14, 2019, 5 a.m. 12.8 ppb (12) 0.3 ppb (0) 15.4 ppb (14) 13.0 ppb (12) N/A 0.0 ppb (0) 28.0 ppb (22) 0.24 ppb (3) N/A 15.2 μg/m3 (57) 57.0
 
Jan. 14, 2019, 4 a.m. 11.7 ppb (11) 0.3 ppb (0) 14.6 ppb (14) 11.0 ppb (10) N/A 1.0 ppb (1) 28.0 ppb (22) 0.24 ppb (3) N/A 17.6 μg/m3 (62) 62.0
 
Jan. 14, 2019, 3 a.m. 11.7 ppb (11) 0.3 ppb (0) 14.7 ppb (14) 11.0 ppb (10) N/A 1.0 ppb (1) 28.0 ppb (22) 0.24 ppb (3) N/A 18.0 μg/m3 (63) 63.0
 
Jan. 14, 2019, 2 a.m. 11.0 ppb (10) 0.3 ppb (0) 14.2 ppb (13) 11.0 ppb (10) N/A 1.0 ppb (1) 30.0 ppb (23) 0.24 ppb (3) N/A 16.0 μg/m3 (59) 59.0
 
Jan. 14, 2019, 1 a.m. 10.7 ppb (10) 0.3 ppb (0) 13.7 ppb (13) 10.0 ppb (9) N/A 1.0 ppb (1) 30.0 ppb (23) 0.23 ppb (3) N/A 17.1 μg/m3 (61) 61.0
 
Jan. 14, 2019, midnight 11.0 ppb (10) 0.4 ppb (0) 13.7 ppb (13) 11.0 ppb (10) N/A 1.0 ppb (1) 29.0 ppb (22) 0.22 ppb (2) N/A 11.6 μg/m3 (48) 48.0
 
Jan. 13, 2019, 11 p.m. 11.8 ppb (11) 0.4 ppb (0) 14.3 ppb (13) 11.0 ppb (10) N/A 0.0 ppb (0) 27.0 ppb (21) 0.24 ppb (3) N/A 18.2 μg/m3 (63) 63.0
 
Jan. 13, 2019, 10 p.m. 11.4 ppb (11) 1.1 ppb (1) 13.8 ppb (13) 10.0 ppb (9) N/A 0.0 ppb (0) 27.0 ppb (21) 0.24 ppb (3) N/A 13.8 μg/m3 (54) 54.0
 
Jan. 13, 2019, 9 p.m. 9.7 ppb (9) 1.3 ppb (1) N/A 8.0 ppb (7) N/A 0.0 ppb (0) 28.0 ppb (22) 0.22 ppb (2) N/A 16.2 μg/m3 (59) 59.0
 
Jan. 13, 2019, 8 p.m. 11.7 ppb (11) 2.4 ppb (2) N/A 9.0 ppb (8) N/A 0.0 ppb (0) 26.0 ppb (20) 0.23 ppb (3) N/A 14.9 μg/m3 (56) 56.0
 
Jan. 13, 2019, 7 p.m. 11.5 ppb (11) 3.2 ppb (3) N/A 8.0 ppb (7) N/A 1.0 ppb (1) 26.0 ppb (20) 0.22 ppb (2) N/A 13.3 μg/m3 (53) 53.0
 
Jan. 13, 2019, 6 p.m. 10.9 ppb (10) 3.4 ppb (3) 13.5 ppb (12) 8.0 ppb (7) N/A 1.0 ppb (1) 27.0 ppb (21) 0.21 ppb (2) N/A 16.6 μg/m3 (60) 60.0
 
Jan. 13, 2019, 5 p.m. 12.0 ppb (11) 2.9 ppb (3) 13.7 ppb (13) 9.0 ppb (8) N/A 0.0 ppb (0) 27.0 ppb (21) 0.19 ppb (2) N/A 9.5 μg/m3 (40) 40.0
 
Jan. 13, 2019, 4 p.m. 9.5 ppb (9) 1.9 ppb (2) 11.0 ppb (10) 8.0 ppb (7) N/A 0.0 ppb (0) 29.0 ppb (22) 0.19 ppb (2) N/A 13.5 μg/m3 (53) 53.0
 
Jan. 13, 2019, 3 p.m. 9.6 ppb (9) 1.5 ppb (1) 11.4 ppb (11) 8.0 ppb (7) N/A 1.0 ppb (1) 27.0 ppb (21) 0.19 ppb (2) N/A 9.0 μg/m3 (38) 38.0
 
Jan. 13, 2019, 2 p.m. 7.8 ppb (7) 0.8 ppb (1) 9.4 ppb (9) 7.0 ppb (6) N/A 1.0 ppb (1) 27.0 ppb (21) 0.19 ppb (2) N/A 9.8 μg/m3 (41) 41.0
 
Jan. 13, 2019, 1 p.m. 10.0 ppb (9) 0.5 ppb (0) 11.9 ppb (11) 10.0 ppb (9) N/A 1.0 ppb (1) 22.0 ppb (17) 0.22 ppb (2) N/A 17.9 μg/m3 (63) 63.0
 
Jan. 13, 2019, noon 9.3 ppb (9) 0.5 ppb (0) 11.7 ppb (11) 9.0 ppb (8) N/A 1.0 ppb (1) 21.0 ppb (16) 0.21 ppb (2) N/A 17.4 μg/m3 (61) 61.0
 
Jan. 13, 2019, 11 a.m. 9.5 ppb (9) 0.6 ppb (1) 11.8 ppb (11) 9.0 ppb (8) N/A N/A 20.0 ppb (15) 0.22 ppb (2) N/A 18.5 μg/m3 (64) 64.0
 
Jan. 13, 2019, 10 a.m. 9.0 ppb (8) 0.5 ppb (0) 11.4 ppb (11) 8.0 ppb (7) N/A N/A 20.0 ppb (15) 0.22 ppb (2) N/A 17.7 μg/m3 (62) 62.0
 
Jan. 13, 2019, 9 a.m. 10.3 ppb (10) 0.6 ppb (1) 12.4 ppb (11) 10.0 ppb (9) N/A 1.0 ppb (1) 20.0 ppb (15) 0.22 ppb (2) N/A 15.9 μg/m3 (58) 58.0
 
Jan. 13, 2019, 8 a.m. 13.3 ppb (12) 0.7 ppb (1) 14.7 ppb (14) 13.0 ppb (12) N/A 1.0 ppb (1) 18.0 ppb (14) 0.24 ppb (3) N/A 8.9 μg/m3 (37) 37.0
 
Jan. 13, 2019, 7 a.m. 13.8 ppb (13) 0.5 ppb (0) 15.0 ppb (14) 13.0 ppb (12) N/A 1.0 ppb (1) 18.0 ppb (14) 0.25 ppb (3) N/A 10.0 μg/m3 (42) 42.0
 
Jan. 13, 2019, 6 a.m. 16.0 ppb (15) 0.7 ppb (1) 17.2 ppb (16) 15.0 ppb (14) N/A 1.0 ppb (1) 17.0 ppb (13) 0.26 ppb (3) N/A 9.6 μg/m3 (40) 40.0
 
Jan. 13, 2019, 5 a.m. 16.7 ppb (15) 1.2 ppb (1) 17.6 ppb (16) 16.0 ppb (15) N/A 1.0 ppb (1) 16.0 ppb (12) 0.26 ppb (3) N/A 10.7 μg/m3 (45) 45.0
 
Jan. 13, 2019, 4 a.m. 7.8 ppb (7) 0.5 ppb (0) 9.1 ppb (8) 7.0 ppb (6) N/A 0.0 ppb (0) 21.0 ppb (16) 0.21 ppb (2) N/A 12.5 μg/m3 (51) 51.0
 
Jan. 13, 2019, 3 a.m. 14.3 ppb (13) 1.1 ppb (1) 16.0 ppb (15) 13.0 ppb (12) N/A 0.0 ppb (0) 17.0 ppb (13) 0.24 ppb (3) N/A 11.0 μg/m3 (46) 46.0
 
Jan. 13, 2019, 2 a.m. 16.6 ppb (15) 1.6 ppb (1) 18.2 ppb (17) 15.0 ppb (14) N/A 1.0 ppb (1) 16.0 ppb (12) 0.23 ppb (3) N/A 13.8 μg/m3 (54) 54.0
 
Jan. 13, 2019, 1 a.m. 18.6 ppb (17) 3.1 ppb (3) 20.7 ppb (19) 16.0 ppb (15) N/A 1.0 ppb (1) 15.0 ppb (12) 0.67 ppb (7) N/A 12.6 μg/m3 (51) 51.0
 
Jan. 13, 2019, midnight 16.2 ppb (15) 3.0 ppb (3) 17.2 ppb (16) 13.0 ppb (12) N/A 0.0 ppb (0) 18.0 ppb (14) 0.24 ppb (3) N/A 11.8 μg/m3 (49) 49.0
 
Jan. 12, 2019, 11 p.m. 15.1 ppb (14) 2.7 ppb (3) 16.8 ppb (16) 12.0 ppb (11) N/A 1.0 ppb (1) 18.0 ppb (14) 0.33 ppb (4) N/A 14.4 μg/m3 (55) 55.0
 
Jan. 12, 2019, 10 p.m. 16.3 ppb (15) 3.3 ppb (3) 18.7 ppb (17) 13.0 ppb (12) N/A 0.0 ppb (0) 18.0 ppb (14) 0.23 ppb (3) N/A 10.3 μg/m3 (43) 43.0
 
Jan. 12, 2019, 9 p.m. 17.8 ppb (16) 4.8 ppb (4) 19.0 ppb (18) 13.0 ppb (12) N/A 0.0 ppb (0) 18.0 ppb (14) 0.24 ppb (3) N/A 14.6 μg/m3 (56) 56.0
 
Jan. 12, 2019, 8 p.m. 15.9 ppb (15) 4.9 ppb (5) 18.4 ppb (17) 11.0 ppb (10) N/A 0.0 ppb (0) 18.0 ppb (14) 0.24 ppb (3) N/A 14.8 μg/m3 (56) 56.0
 
Jan. 12, 2019, 7 p.m. 11.8 ppb (11) 3.9 ppb (4) 14.2 ppb (13) 8.0 ppb (7) N/A 0.0 ppb (0) 21.0 ppb (16) 0.23 ppb (3) N/A 14.7 μg/m3 (56) 56.0
 
Jan. 12, 2019, 6 p.m. 13.1 ppb (12) 5.1 ppb (5) 15.8 ppb (15) 8.0 ppb (7) N/A 0.0 ppb (0) 20.0 ppb (15) 0.23 ppb (3) N/A 13.9 μg/m3 (54) 54.0
 
Jan. 12, 2019, 5 p.m. 13.1 ppb (12) 5.3 ppb (5) 15.3 ppb (14) 8.0 ppb (7) N/A 0.0 ppb (0) 19.0 ppb (15) 0.22 ppb (2) N/A 8.7 μg/m3 (36) 36.0
 
Jan. 12, 2019, 4 p.m. 13.8 ppb (13) 5.5 ppb (5) 15.8 ppb (15) 8.0 ppb (7) N/A 0.0 ppb (0) 17.0 ppb (13) 0.22 ppb (2) N/A 11.6 μg/m3 (48) 48.0
 
Jan. 12, 2019, 3 p.m. 15.7 ppb (15) 6.0 ppb (6) 17.4 ppb (16) 10.0 ppb (9) N/A 0.0 ppb (0) 16.0 ppb (12) 0.23 ppb (3) N/A 9.5 μg/m3 (40) 40.0
 
Jan. 12, 2019, 2 p.m. 20.4 ppb (19) 6.4 ppb (6) 22.1 ppb (20) 14.0 ppb (13) N/A 0.0 ppb (0) 12.0 ppb (9) 0.22 ppb (2) N/A 15.5 μg/m3 (57) 57.0
 
Jan. 12, 2019, 1 p.m. 14.8 ppb (14) 3.3 ppb (3) 16.3 ppb (15) 12.0 ppb (11) N/A 0.0 ppb (0) 14.0 ppb (11) 0.21 ppb (2) N/A 8.7 μg/m3 (36) 36.0
 
Jan. 12, 2019, noon 22.6 ppb (21) 6.7 ppb (6) 22.6 ppb (21) 16.0 ppb (15) N/A 0.0 ppb (0) 11.0 ppb (8) 0.21 ppb (2) N/A 15.0 μg/m3 (56) 56.0
 
Jan. 12, 2019, 11 a.m. 15.5 ppb (14) 2.5 ppb (2) 16.7 ppb (15) 13.0 ppb (12) N/A 0.0 ppb (0) 13.0 ppb (10) N/A N/A 11.7 μg/m3 (49) 49.0
 
Jan. 12, 2019, 10 a.m. 18.3 ppb (17) 2.7 ppb (3) 20.1 ppb (19) 16.0 ppb (15) N/A 0.0 ppb (0) 11.0 ppb (8) N/A N/A 10.2 μg/m3 (42) 42.0
 
Jan. 12, 2019, 9 a.m. 16.9 ppb (16) 2.3 ppb (2) 18.3 ppb (17) 15.0 ppb (14) N/A 1.0 ppb (1) 12.0 ppb (9) 0.21 ppb (2) N/A 13.8 μg/m3 (54) 54.0
 
Jan. 12, 2019, 8 a.m. 24.0 ppb (22) 3.8 ppb (4) 25.6 ppb (24) 20.0 ppb (19) N/A 0.0 ppb (0) 9.0 ppb (7) 0.21 ppb (2) N/A 11.5 μg/m3 (48) 48.0
 
Jan. 12, 2019, 7 a.m. 23.4 ppb (22) 3.1 ppb (3) 24.3 ppb (23) 20.0 ppb (19) N/A 0.0 ppb (0) 9.0 ppb (7) 0.21 ppb (2) N/A 11.7 μg/m3 (49) 49.0
 
Jan. 12, 2019, 6 a.m. 19.3 ppb (18) 3.4 ppb (3) 21.0 ppb (19) 16.0 ppb (15) N/A 0.0 ppb (0) 14.0 ppb (11) 0.21 ppb (2) N/A 7.3 μg/m3 (30) 30.0
 
Jan. 12, 2019, 5 a.m. 17.1 ppb (16) 2.1 ppb (2) 17.6 ppb (16) 15.0 ppb (14) N/A 0.0 ppb (0) 14.0 ppb (11) 0.2 ppb (2) N/A 8.9 μg/m3 (37) 37.0
 
Jan. 12, 2019, 4 a.m. 16.9 ppb (16) 2.3 ppb (2) 17.9 ppb (17) 15.0 ppb (14) N/A 0.0 ppb (0) 13.0 ppb (10) 0.2 ppb (2) N/A 9.9 μg/m3 (41) 41.0
 
Jan. 12, 2019, 3 a.m. 16.2 ppb (15) 3.0 ppb (3) 17.4 ppb (16) 13.0 ppb (12) N/A 0.0 ppb (0) 15.0 ppb (12) 0.21 ppb (2) N/A 11.0 μg/m3 (46) 46.0
 
Jan. 12, 2019, 2 a.m. 21.8 ppb (20) 5.9 ppb (5) 23.4 ppb (22) 16.0 ppb (15) N/A 0.0 ppb (0) 12.0 ppb (9) 0.22 ppb (2) N/A 13.3 μg/m3 (53) 53.0
 
Jan. 12, 2019, 1 a.m. 27.2 ppb (25) 9.1 ppb (8) 29.1 ppb (27) 18.0 ppb (17) N/A 1.0 ppb (1) 9.0 ppb (7) 0.25 ppb (3) N/A 15.4 μg/m3 (57) 57.0
 
Jan. 12, 2019, midnight 24.8 ppb (23) 6.8 ppb (6) 26.8 ppb (25) 18.0 ppb (17) N/A 1.0 ppb (1) 8.0 ppb (6) 0.24 ppb (3) N/A 8.3 μg/m3 (35) 35.0
 
Jan. 11, 2019, 11 p.m. 29.0 ppb (27) 8.7 ppb (8) 31.1 ppb (29) 20.0 ppb (19) N/A 1.0 ppb (1) 7.0 ppb (5) 0.26 ppb (3) N/A 12.1 μg/m3 (50) 50.0
 
Jan. 11, 2019, 10 p.m. 31.0 ppb (29) 10.2 ppb (9) 34.2 ppb (32) 21.0 ppb (19) N/A 1.0 ppb (1) 6.0 ppb (5) 0.27 ppb (3) N/A 11.6 μg/m3 (48) 48.0
 
Jan. 11, 2019, 9 p.m. 30.0 ppb (28) 10.2 ppb (9) 32.4 ppb (30) 20.0 ppb (19) N/A 2.0 ppb (3) 8.0 ppb (6) 0.26 ppb (3) N/A 15.5 μg/m3 (57) 57.0
 
Jan. 11, 2019, 8 p.m. 22.5 ppb (21) 7.1 ppb (7) 24.8 ppb (23) 16.0 ppb (15) N/A 2.0 ppb (3) 11.0 ppb (8) 0.23 ppb (3) N/A 11.8 μg/m3 (49) 49.0
 
Jan. 11, 2019, 7 p.m. 28.7 ppb (27) 11.9 ppb (11) 30.4 ppb (28) 17.0 ppb (16) N/A 4.0 ppb (6) 9.0 ppb (7) 0.25 ppb (3) N/A 14.3 μg/m3 (55) 55.0
 
Jan. 11, 2019, 6 p.m. 33.8 ppb (31) 15.3 ppb (14) 37.1 ppb (34) 19.0 ppb (18) N/A 4.0 ppb (6) 9.0 ppb (7) 0.25 ppb (3) N/A 20.6 μg/m3 (68) 68.0
 
Jan. 11, 2019, 5 p.m. 27.4 ppb (25) 11.1 ppb (10) 30.3 ppb (28) 16.0 ppb (15) N/A 4.0 ppb (6) 10.0 ppb (8) 0.22 ppb (2) N/A 11.6 μg/m3 (48) 48.0
 
Jan. 11, 2019, 4 p.m. 26.9 ppb (25) 12.6 ppb (12) 29.3 ppb (27) 14.0 ppb (13) N/A 3.0 ppb (4) 11.0 ppb (8) 0.23 ppb (3) N/A 14.1 μg/m3 (54) 54.0
 
Jan. 11, 2019, 3 p.m. 29.5 ppb (27) 13.5 ppb (12) 32.3 ppb (30) 16.0 ppb (15) N/A 3.0 ppb (4) 10.0 ppb (8) 0.26 ppb (3) N/A 15.7 μg/m3 (58) 58.0
 
Jan. 11, 2019, 2 p.m. 33.0 ppb (31) 16.0 ppb (15) 37.8 ppb (35) 17.0 ppb (16) N/A 2.0 ppb (3) 7.0 ppb (5) 0.24 ppb (3) N/A 12.3 μg/m3 (51) 51.0
 
Jan. 11, 2019, 1 p.m. 24.7 ppb (23) 6.8 ppb (6) 26.0 ppb (24) 18.0 ppb (17) N/A 2.0 ppb (3) 7.0 ppb (5) 0.22 ppb (2) N/A 15.0 μg/m3 (56) 56.0
 
Jan. 11, 2019, noon 26.5 ppb (25) 8.1 ppb (8) 30.2 ppb (28) 19.0 ppb (18) N/A 1.0 ppb (1) 7.0 ppb (5) 0.22 ppb (2) N/A 8.0 μg/m3 (33) 33.0
 
Jan. 11, 2019, 11 a.m. 20.2 ppb (19) 4.1 ppb (4) 21.2 ppb (20) 16.0 ppb (15) N/A N/A 9.0 ppb (7) 0.18 ppb (2) N/A 15.7 μg/m3 (58) 58.0
 
Jan. 11, 2019, 10 a.m. 16.1 ppb (15) 2.4 ppb (2) 17.6 ppb (16) 14.0 ppb (13) N/A N/A 11.0 ppb (8) 0.17 ppb (2) N/A 7.5 μg/m3 (31) 31.0
 
Jan. 11, 2019, 9 a.m. 12.5 ppb (12) 1.2 ppb (1) 13.6 ppb (13) 11.0 ppb (10) N/A 0.0 ppb (0) 14.0 ppb (11) 0.18 ppb (2) N/A 7.1 μg/m3 (30) 30.0
 
Jan. 11, 2019, 8 a.m. 14.8 ppb (14) 1.3 ppb (1) 16.2 ppb (15) 13.0 ppb (12) N/A 0.0 ppb (0) 12.0 ppb (9) 0.18 ppb (2) N/A 11.2 μg/m3 (47) 47.0
 
Jan. 11, 2019, 7 a.m. 16.9 ppb (16) 2.3 ppb (2) 18.6 ppb (17) 15.0 ppb (14) N/A 1.0 ppb (1) 11.0 ppb (8) 0.2 ppb (2) N/A 11.4 μg/m3 (48) 48.0
 
Jan. 11, 2019, 6 a.m. 20.9 ppb (19) 3.2 ppb (3) 22.8 ppb (21) 18.0 ppb (17) N/A 0.0 ppb (0) 10.0 ppb (8) 0.22 ppb (2) N/A 9.4 μg/m3 (39) 39.0
 
Jan. 11, 2019, 5 a.m. 27.8 ppb (26) 6.9 ppb (6) 30.2 ppb (28) 21.0 ppb (19) N/A 0.0 ppb (0) 9.0 ppb (7) 0.34 ppb (4) N/A 14.1 μg/m3 (54) 54.0
 
Jan. 11, 2019, 4 a.m. 38.1 ppb (35) 11.8 ppb (11) 41.3 ppb (38) 26.0 ppb (24) N/A 0.0 ppb (0) 4.0 ppb (3) 0.31 ppb (3) N/A 11.3 μg/m3 (47) 47.0
 
Jan. 11, 2019, 3 a.m. 32.9 ppb (30) 9.1 ppb (8) 35.9 ppb (33) 24.0 ppb (22) N/A 0.0 ppb (0) 6.0 ppb (5) 0.27 ppb (3) N/A 15.6 μg/m3 (58) 58.0
 
Jan. 11, 2019, 2 a.m. 32.4 ppb (30) 7.6 ppb (7) 35.8 ppb (33) 25.0 ppb (23) N/A 1.0 ppb (1) 7.0 ppb (5) 0.26 ppb (3) N/A 16.6 μg/m3 (60) 60.0
 
Jan. 11, 2019, 1 a.m. 30.3 ppb (28) 7.2 ppb (7) 30.9 ppb (29) 23.0 ppb (21) N/A 1.0 ppb (1) 9.0 ppb (7) 0.27 ppb (3) N/A 11.3 μg/m3 (47) 47.0
 
Jan. 11, 2019, midnight 34.3 ppb (32) 11.3 ppb (10) 35.8 ppb (33) 23.0 ppb (21) N/A 0.0 ppb (0) 8.0 ppb (6) 0.24 ppb (3) N/A 9.2 μg/m3 (38) 38.0
 
Jan. 10, 2019, 11 p.m. 33.4 ppb (31) 9.6 ppb (9) 35.2 ppb (33) 24.0 ppb (22) N/A 3.0 ppb (4) 9.0 ppb (7) 0.29 ppb (3) N/A 12.0 μg/m3 (50) 50.0
 
Jan. 10, 2019, 10 p.m. 29.8 ppb (28) 8.7 ppb (8) 32.1 ppb (30) 21.0 ppb (19) N/A 7.0 ppb (10) 13.0 ppb (10) 0.38 ppb (4) N/A 16.1 μg/m3 (59) 59.0
 
Jan. 10, 2019, 9 p.m. 25.3 ppb (23) 10.4 ppb (10) 29.6 ppb (27) 15.0 ppb (14) N/A 4.0 ppb (6) 18.0 ppb (14) 0.25 ppb (3) N/A 12.5 μg/m3 (51) 51.0
 
Jan. 10, 2019, 8 p.m. 18.8 ppb (17) 8.5 ppb (8) 22.7 ppb (21) 11.0 ppb (10) N/A 1.0 ppb (1) 22.0 ppb (17) 0.2 ppb (2) N/A 14.3 μg/m3 (55) 55.0
 
Jan. 10, 2019, 7 p.m. 18.3 ppb (17) 8.8 ppb (8) 20.8 ppb (19) 10.0 ppb (9) N/A 1.0 ppb (1) 23.0 ppb (18) 0.19 ppb (2) N/A 11.8 μg/m3 (49) 49.0
 
Jan. 10, 2019, 6 p.m. 15.5 ppb (14) 7.5 ppb (7) 18.3 ppb (17) 8.0 ppb (7) N/A 1.0 ppb (1) 22.0 ppb (17) 0.17 ppb (2) N/A 11.9 μg/m3 (50) 50.0
 
Jan. 10, 2019, 5 p.m. 18.4 ppb (17) 9.5 ppb (9) 20.9 ppb (19) 9.0 ppb (8) N/A 2.0 ppb (3) 20.0 ppb (15) 0.19 ppb (2) N/A 12.3 μg/m3 (51) 51.0
 
Jan. 10, 2019, 4 p.m. 19.4 ppb (18) 10.3 ppb (10) 23.1 ppb (21) 9.0 ppb (8) N/A 3.0 ppb (4) 17.0 ppb (13) 0.22 ppb (2) N/A 12.8 μg/m3 (52) 52.0
 
Jan. 10, 2019, 3 p.m. 22.0 ppb (20) 11.4 ppb (11) 25.5 ppb (24) 11.0 ppb (10) N/A 2.0 ppb (3) 14.0 ppb (11) 0.22 ppb (2) N/A 11.0 μg/m3 (46) 46.0
 
Jan. 10, 2019, 2 p.m. 19.7 ppb (18) 7.9 ppb (7) 21.9 ppb (20) 12.0 ppb (11) N/A 0.0 ppb (0) 13.0 ppb (10) 0.19 ppb (2) N/A 11.7 μg/m3 (49) 49.0
 
Jan. 10, 2019, 1 p.m. 22.7 ppb (21) 6.8 ppb (6) 23.8 ppb (22) 16.0 ppb (15) N/A 0.0 ppb (0) 10.0 ppb (8) 0.21 ppb (2) N/A 8.8 μg/m3 (37) 37.0
 
Jan. 10, 2019, noon 16.5 ppb (15) 4.1 ppb (4) 17.9 ppb (17) 13.0 ppb (12) N/A 0.0 ppb (0) 12.0 ppb (9) 0.18 ppb (2) N/A 7.1 μg/m3 (30) 30.0
 
Jan. 10, 2019, 11 a.m. 12.8 ppb (12) 2.5 ppb (2) 13.5 ppb (12) 10.0 ppb (9) N/A 0.0 ppb (0) 15.0 ppb (12) N/A N/A 4.2 μg/m3 (18) 18.0
 
Jan. 10, 2019, 10 a.m. 8.0 ppb (7) 1.0 ppb (1) 8.3 ppb (8) 7.0 ppb (6) N/A 0.0 ppb (0) 18.0 ppb (14) N/A N/A 5.9 μg/m3 (25) 25.0
 
Jan. 10, 2019, 9 a.m. 8.1 ppb (8) 1.0 ppb (1) 8.3 ppb (8) 7.0 ppb (6) N/A 0.0 ppb (0) 19.0 ppb (15) 0.14 ppb (2) N/A 5.5 μg/m3 (23) 23.0
 
Jan. 10, 2019, 8 a.m. 6.5 ppb (6) 0.5 ppb (0) 6.5 ppb (6) 6.0 ppb (6) N/A 1.0 ppb (1) 20.0 ppb (15) 0.13 ppb (1) N/A 3.5 μg/m3 (15) 15.0
 
Jan. 10, 2019, 7 a.m. 8.5 ppb (8) 0.6 ppb (1) 8.3 ppb (8) 8.0 ppb (7) N/A 1.0 ppb (1) 19.0 ppb (15) 0.13 ppb (1) N/A 6.4 μg/m3 (27) 27.0
 
Jan. 10, 2019, 6 a.m. 15.9 ppb (15) 1.0 ppb (1) 16.3 ppb (15) 15.0 ppb (14) N/A 1.0 ppb (1) 11.0 ppb (8) 0.15 ppb (2) N/A 7.5 μg/m3 (31) 31.0
 
Jan. 10, 2019, 5 a.m. 11.3 ppb (10) 0.6 ppb (1) 11.5 ppb (11) 11.0 ppb (10) N/A 0.0 ppb (0) 17.0 ppb (13) 0.14 ppb (2) N/A 4.9 μg/m3 (20) 20.0
 
Jan. 10, 2019, 4 a.m. 7.4 ppb (7) 0.4 ppb (0) 7.4 ppb (7) 7.0 ppb (6) N/A 0.0 ppb (0) 22.0 ppb (17) 0.14 ppb (2) N/A 2.0 μg/m3 (8) 17.0
 
Jan. 10, 2019, 3 a.m. 8.1 ppb (8) 0.4 ppb (0) 8.1 ppb (8) 8.0 ppb (7) N/A 0.0 ppb (0) 23.0 ppb (18) 0.14 ppb (2) N/A 4.2 μg/m3 (18) 18.0
 
Jan. 10, 2019, 2 a.m. 11.8 ppb (11) 0.6 ppb (1) 11.6 ppb (11) 11.0 ppb (10) N/A 0.0 ppb (0) 21.0 ppb (16) 0.16 ppb (2) N/A 3.5 μg/m3 (15) 16.0
 
Jan. 10, 2019, 1 a.m. 11.9 ppb (11) 0.6 ppb (1) 12.1 ppb (11) 11.0 ppb (10) N/A 0.0 ppb (0) 21.0 ppb (16) 0.17 ppb (2) N/A 8.9 μg/m3 (37) 37.0
 
Jan. 10, 2019, midnight 7.2 ppb (7) 0.5 ppb (0) 7.2 ppb (7) 7.0 ppb (6) N/A 0.0 ppb (0) 26.0 ppb (20) 0.17 ppb (2) N/A 5.7 μg/m3 (24) 24.0
 
Jan. 9, 2019, 11 p.m. 6.8 ppb (6) 0.4 ppb (0) 6.7 ppb (6) 6.0 ppb (6) N/A 0.0 ppb (0) 27.0 ppb (21) 0.16 ppb (2) N/A 4.0 μg/m3 (17) 21.0
 
Jan. 9, 2019, 10 p.m. 6.0 ppb (6) 0.7 ppb (1) 6.1 ppb (6) 5.0 ppb (5) N/A 0.0 ppb (0) 29.0 ppb (22) 0.16 ppb (2) N/A 2.5 μg/m3 (10) 22.0
 
Jan. 9, 2019, 9 p.m. 12.1 ppb (11) 6.3 ppb (6) 10.6 ppb (10) 6.0 ppb (6) N/A 0.0 ppb (0) 30.0 ppb (23) 0.21 ppb (2) N/A 10.7 μg/m3 (45) 45.0
 
Jan. 9, 2019, 8 p.m. 11.8 ppb (11) 6.0 ppb (6) 8.9 ppb (8) 6.0 ppb (6) N/A 0.0 ppb (0) 32.0 ppb (25) 0.17 ppb (2) N/A -3.1 μg/m3 (0) 25.0
 
Jan. 9, 2019, 7 p.m. 6.3 ppb (6) 3.3 ppb (3) 5.7 ppb (5) 3.0 ppb (3) N/A 0.0 ppb (0) 33.0 ppb (25) 0.17 ppb (2) N/A 10.0 μg/m3 (42) 42.0
 
Jan. 9, 2019, 6 p.m. 5.6 ppb (5) 2.7 ppb (3) 5.1 ppb (5) 3.0 ppb (3) N/A 0.0 ppb (0) 34.0 ppb (26) 0.16 ppb (2) N/A 5.1 μg/m3 (21) 26.0
 
Jan. 9, 2019, 5 p.m. 4.8 ppb (4) 2.8 ppb (3) 4.9 ppb (5) 2.0 ppb (2) N/A 0.0 ppb (0) 34.0 ppb (26) 0.14 ppb (2) N/A 5.4 μg/m3 (23) 26.0
 
Jan. 9, 2019, 4 p.m. 6.8 ppb (6) 3.5 ppb (3) 5.6 ppb (5) 4.0 ppb (4) N/A 0.0 ppb (0) 33.0 ppb (25) 0.14 ppb (2) N/A N/A 25.0
 
Jan. 9, 2019, 3 p.m. 9.6 ppb (9) 4.6 ppb (4) 8.0 ppb (7) 5.0 ppb (5) N/A 0.0 ppb (0) 29.0 ppb (22) 0.25 ppb (3) N/A N/A 22.0
 
Jan. 9, 2019, 2 p.m. 10.6 ppb (10) 3.5 ppb (3) 9.7 ppb (9) 7.0 ppb (6) N/A 0.0 ppb (0) 27.0 ppb (21) 0.4 ppb (4) N/A N/A 21.0
 
Jan. 9, 2019, 1 p.m. 15.5 ppb (14) N/A 11.8 ppb (11) 12.0 ppb (11) N/A N/A 18.0 ppb (14) N/A N/A 9.5 μg/m3 (40) 40.0
 
Jan. 9, 2019, noon 12.5 ppb (12) N/A 10.6 ppb (10) 10.0 ppb (9) N/A N/A 19.0 ppb (15) N/A N/A 5.7 μg/m3 (24) 24.0
 
Jan. 9, 2019, 11 a.m. 6.2 ppb (6) 0.8 ppb (1) 4.3 ppb (4) 5.0 ppb (5) N/A N/A 23.0 ppb (18) N/A N/A 5.3 μg/m3 (22) 22.0
 
Jan. 9, 2019, 10 a.m. 3.5 ppb (3) 0.2 ppb (0) 3.2 ppb (3) 3.0 ppb (3) N/A N/A 31.0 ppb (24) 0.14 ppb (2) N/A 3.1 μg/m3 (13) 24.0
 
Jan. 9, 2019, 9 a.m. 2.3 ppb (2) 0.2 ppb (0) 2.1 ppb (2) 2.0 ppb (2) N/A 0.0 ppb (0) 33.0 ppb (25) 0.12 ppb (1) N/A 3.3 μg/m3 (14) 25.0
 
Jan. 9, 2019, 8 a.m. 2.3 ppb (2) 0.2 ppb (0) 2.0 ppb (2) 2.0 ppb (2) N/A 0.0 ppb (0) 33.0 ppb (25) 0.12 ppb (1) N/A 2.9 μg/m3 (12) 25.0
 
Jan. 9, 2019, 7 a.m. 1.6 ppb (1) 0.2 ppb (0) 1.4 ppb (1) 2.0 ppb (2) N/A 0.0 ppb (0) 35.0 ppb (27) 0.12 ppb (1) N/A 1.7 μg/m3 (7) 27.0
 
Jan. 9, 2019, 6 a.m. 2.7 ppb (3) 0.2 ppb (0) 2.4 ppb (2) 3.0 ppb (3) N/A 0.0 ppb (0) 33.0 ppb (25) 0.14 ppb (2) N/A 2.2 μg/m3 (9) 25.0
 
Jan. 9, 2019, 5 a.m. 3.2 ppb (3) 0.2 ppb (0) 2.7 ppb (3) 3.0 ppb (3) N/A 0.0 ppb (0) 32.0 ppb (25) 0.14 ppb (2) N/A 1.9 μg/m3 (8) 25.0