AQSQID: 245100040

Site Name: Oldtown

Location: Baltimore, MD

Reporting: True, Located: True

Current AQI: 5.0

Baltimore MD, US: 39.2981, -76.604698

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
July 22, 2019, 6 a.m. 5.7 ppb (5) 0.4 ppb (0) N/A 5.0 ppb (5) N/A N/A N/A N/A N/A N/A 5.0
 
July 22, 2019, 5 a.m. 3.3 ppb (3) 0.2 ppb (0) N/A 3.0 ppb (3) N/A N/A N/A N/A N/A N/A 3.0
 
July 22, 2019, 4 a.m. 3.8 ppb (4) 0.2 ppb (0) N/A 4.0 ppb (4) N/A N/A N/A N/A N/A N/A 4.0
 
July 22, 2019, 3 a.m. 5.0 ppb (5) 0.4 ppb (0) N/A 5.0 ppb (5) N/A N/A N/A N/A N/A N/A 5.0
 
July 22, 2019, 2 a.m. 5.7 ppb (5) 0.7 ppb (1) N/A 5.0 ppb (5) N/A N/A N/A N/A N/A N/A 5.0
 
July 22, 2019, 1 a.m. 4.6 ppb (4) 0.4 ppb (0) N/A 4.0 ppb (4) N/A N/A N/A N/A N/A N/A 4.0
 
July 22, 2019, midnight 4.1 ppb (4) 0.2 ppb (0) N/A 4.0 ppb (4) N/A N/A N/A N/A N/A N/A 4.0
 
July 21, 2019, 11 p.m. 3.5 ppb (3) 0.5 ppb (0) N/A 3.0 ppb (3) N/A N/A N/A N/A N/A 9.0 μg/m3 (38) 38.0
 
July 21, 2019, 10 p.m. 2.7 ppb (3) 0.4 ppb (0) N/A 2.0 ppb (2) N/A N/A N/A N/A N/A N/A 3.0
 
July 21, 2019, 9 p.m. 1.7 ppb (2) 0.3 ppb (0) N/A 1.0 ppb (1) N/A N/A N/A N/A N/A N/A 2.0
 
July 21, 2019, 8 p.m. 1.3 ppb (1) 0.2 ppb (0) N/A 1.0 ppb (1) N/A N/A N/A N/A N/A N/A 1.0
 
July 21, 2019, 7 p.m. 1.2 ppb (1) 0.2 ppb (0) N/A 1.0 ppb (1) N/A N/A N/A N/A N/A N/A 1.0
 
July 21, 2019, 6 p.m. 1.2 ppb (1) 0.2 ppb (0) N/A 1.0 ppb (1) N/A N/A N/A N/A N/A N/A 1.0
 
July 21, 2019, 5 p.m. 1.2 ppb (1) 0.2 ppb (0) N/A 1.0 ppb (1) N/A N/A N/A N/A N/A N/A 1.0
 
July 21, 2019, 4 p.m. 1.8 ppb (2) 0.4 ppb (0) N/A 1.0 ppb (1) N/A N/A N/A N/A N/A N/A 2.0
 
July 21, 2019, 3 p.m. 1.7 ppb (2) 0.3 ppb (0) N/A 1.0 ppb (1) N/A N/A N/A N/A N/A N/A 2.0
 
July 21, 2019, 2 p.m. 3.0 ppb (3) 0.8 ppb (1) N/A 2.0 ppb (2) N/A N/A N/A N/A N/A N/A 3.0
 
July 21, 2019, 1 p.m. 2.7 ppb (3) 0.6 ppb (1) N/A 2.0 ppb (2) N/A N/A N/A N/A N/A N/A 3.0
 
July 21, 2019, noon 3.3 ppb (3) 0.7 ppb (1) N/A 3.0 ppb (3) N/A N/A N/A N/A N/A N/A 3.0
 
July 21, 2019, 11 a.m. 4.4 ppb (4) 0.7 ppb (1) N/A 4.0 ppb (4) N/A N/A N/A N/A N/A N/A 4.0
 
July 21, 2019, 10 a.m. 4.1 ppb (4) 0.4 ppb (0) N/A 4.0 ppb (4) N/A N/A N/A N/A N/A N/A 4.0
 
July 21, 2019, 9 a.m. 3.3 ppb (3) 0.1 ppb (0) N/A 3.0 ppb (3) N/A N/A N/A N/A N/A N/A 3.0
 
July 21, 2019, 8 a.m. 7.2 ppb (7) 0.4 ppb (0) N/A 7.0 ppb (6) N/A N/A N/A N/A N/A N/A 7.0
 
July 21, 2019, 7 a.m. 4.6 ppb (4) 0.2 ppb (0) N/A 4.0 ppb (4) N/A N/A N/A N/A N/A N/A 4.0
 
July 21, 2019, 6 a.m. 4.9 ppb (5) 0.2 ppb (0) N/A 5.0 ppb (5) N/A N/A N/A N/A N/A 15.0 μg/m3 (56) 56.0
 
July 21, 2019, 5 a.m. 5.3 ppb (5) 0.2 ppb (0) N/A 5.0 ppb (5) N/A N/A N/A N/A N/A 15.0 μg/m3 (56) 56.0
 
July 21, 2019, 4 a.m. 7.3 ppb (7) 0.3 ppb (0) N/A 7.0 ppb (6) N/A N/A N/A N/A N/A 17.0 μg/m3 (61) 61.0
 
July 21, 2019, 3 a.m. 8.0 ppb (7) 0.9 ppb (1) N/A 7.0 ppb (6) N/A N/A N/A N/A N/A 17.0 μg/m3 (61) 61.0
 
July 21, 2019, 2 a.m. 7.9 ppb (7) 0.6 ppb (1) N/A 7.0 ppb (6) N/A N/A N/A N/A N/A 17.0 μg/m3 (61) 61.0
 
July 21, 2019, 1 a.m. 5.8 ppb (5) 0.5 ppb (0) N/A 5.0 ppb (5) N/A N/A N/A N/A N/A 16.0 μg/m3 (59) 59.0
 
July 21, 2019, midnight 3.9 ppb (4) 0.2 ppb (0) N/A 4.0 ppb (4) N/A N/A N/A N/A N/A 13.0 μg/m3 (52) 52.0
 
July 20, 2019, 11 p.m. 2.8 ppb (3) 0.3 ppb (0) N/A 3.0 ppb (3) N/A N/A N/A N/A N/A 16.0 μg/m3 (59) 59.0
 
July 20, 2019, 10 p.m. 1.8 ppb (2) 0.1 ppb (0) N/A 2.0 ppb (2) N/A N/A N/A N/A N/A 18.0 μg/m3 (63) 63.0
 
July 20, 2019, 9 p.m. 2.5 ppb (2) 0.5 ppb (0) N/A 2.0 ppb (2) N/A N/A N/A N/A N/A 18.0 μg/m3 (63) 63.0
 
July 20, 2019, 8 p.m. 2.4 ppb (2) 0.5 ppb (0) N/A 2.0 ppb (2) N/A N/A N/A N/A N/A 13.0 μg/m3 (52) 52.0
 
July 20, 2019, 7 p.m. 2.2 ppb (2) 0.3 ppb (0) N/A 2.0 ppb (2) N/A N/A N/A N/A N/A 15.0 μg/m3 (56) 56.0
 
July 20, 2019, 6 p.m. 5.7 ppb (5) 1.1 ppb (1) N/A 5.0 ppb (5) N/A N/A N/A N/A N/A 15.0 μg/m3 (56) 56.0
 
July 20, 2019, 5 p.m. 3.0 ppb (3) 0.6 ppb (1) N/A 2.0 ppb (2) N/A N/A N/A N/A N/A 10.0 μg/m3 (42) 42.0
 
July 20, 2019, 4 p.m. 3.2 ppb (3) 0.7 ppb (1) N/A 2.0 ppb (2) N/A N/A N/A N/A N/A 18.0 μg/m3 (63) 63.0
 
July 20, 2019, 3 p.m. 2.9 ppb (3) 0.6 ppb (1) N/A 2.0 ppb (2) N/A N/A N/A N/A N/A 11.0 μg/m3 (46) 46.0
 
July 20, 2019, 2 p.m. 3.5 ppb (3) 0.7 ppb (1) N/A 3.0 ppb (3) N/A N/A N/A N/A N/A 17.0 μg/m3 (61) 61.0
 
July 20, 2019, 1 p.m. 5.6 ppb (5) 1.3 ppb (1) N/A 4.0 ppb (4) N/A N/A N/A N/A N/A 20.0 μg/m3 (67) 67.0
 
July 20, 2019, noon 5.4 ppb (5) 1.1 ppb (1) N/A 4.0 ppb (4) N/A N/A N/A N/A N/A 16.0 μg/m3 (59) 59.0
 
July 20, 2019, 11 a.m. 5.5 ppb (5) 0.8 ppb (1) N/A 5.0 ppb (5) N/A N/A N/A N/A N/A 21.0 μg/m3 (69) 69.0
 
July 20, 2019, 10 a.m. 4.2 ppb (4) 0.3 ppb (0) N/A 4.0 ppb (4) N/A N/A N/A N/A N/A 16.0 μg/m3 (59) 59.0
 
July 20, 2019, 9 a.m. 3.3 ppb (3) 0.0 ppb (0) N/A 3.0 ppb (3) N/A N/A N/A N/A N/A 18.0 μg/m3 (63) 63.0
 
July 20, 2019, 8 a.m. 3.8 ppb (4) 0.1 ppb (0) N/A 4.0 ppb (4) N/A N/A N/A N/A N/A 19.0 μg/m3 (65) 65.0
 
July 20, 2019, 7 a.m. 3.6 ppb (3) 0.1 ppb (0) N/A 4.0 ppb (4) N/A N/A N/A N/A N/A 14.0 μg/m3 (54) 54.0
 
July 20, 2019, 6 a.m. 3.8 ppb (4) 0.1 ppb (0) N/A 4.0 ppb (4) N/A N/A N/A N/A N/A 12.0 μg/m3 (50) 50.0
 
July 20, 2019, 5 a.m. 6.4 ppb (6) 0.3 ppb (0) N/A 6.0 ppb (6) N/A N/A N/A N/A N/A 10.0 μg/m3 (42) 42.0
 
July 20, 2019, 4 a.m. 10.4 ppb (10) 1.0 ppb (1) N/A 9.0 ppb (8) N/A N/A N/A N/A N/A 11.0 μg/m3 (46) 46.0
 
July 20, 2019, 3 a.m. 11.4 ppb (11) 1.7 ppb (2) N/A 10.0 ppb (9) N/A N/A N/A N/A N/A 15.0 μg/m3 (56) 56.0
 
July 20, 2019, 2 a.m. 6.1 ppb (6) 0.2 ppb (0) N/A 6.0 ppb (6) N/A N/A N/A N/A N/A 15.0 μg/m3 (56) 56.0
 
July 20, 2019, 1 a.m. 6.4 ppb (6) 0.5 ppb (0) N/A 6.0 ppb (6) N/A N/A N/A N/A N/A 13.0 μg/m3 (52) 52.0
 
July 20, 2019, midnight 7.3 ppb (7) 0.7 ppb (1) N/A 7.0 ppb (6) N/A N/A N/A N/A N/A 11.0 μg/m3 (46) 46.0
 
July 19, 2019, 11 p.m. 4.7 ppb (4) 0.3 ppb (0) N/A 4.0 ppb (4) N/A N/A N/A N/A N/A 12.0 μg/m3 (50) 50.0
 
July 19, 2019, 10 p.m. 4.6 ppb (4) 0.5 ppb (0) N/A 4.0 ppb (4) N/A N/A N/A N/A N/A 14.0 μg/m3 (54) 54.0
 
July 19, 2019, 9 p.m. 4.3 ppb (4) 0.8 ppb (1) N/A 4.0 ppb (4) N/A N/A N/A N/A N/A 9.0 μg/m3 (38) 38.0
 
July 19, 2019, 8 p.m. 3.9 ppb (4) 0.8 ppb (1) N/A 3.0 ppb (3) N/A N/A N/A N/A N/A 13.0 μg/m3 (52) 52.0
 
July 19, 2019, 7 p.m. 4.2 ppb (4) 1.0 ppb (1) N/A 3.0 ppb (3) N/A N/A N/A N/A N/A 12.0 μg/m3 (50) 50.0
 
July 19, 2019, 6 p.m. 3.9 ppb (4) 0.7 ppb (1) N/A 3.0 ppb (3) N/A N/A N/A N/A N/A 14.0 μg/m3 (54) 54.0
 
July 19, 2019, 5 p.m. 3.1 ppb (3) 0.5 ppb (0) N/A 3.0 ppb (3) N/A N/A N/A N/A N/A 11.0 μg/m3 (46) 46.0
 
July 19, 2019, 4 p.m. 3.6 ppb (3) 0.6 ppb (1) N/A 3.0 ppb (3) N/A N/A N/A N/A N/A 11.0 μg/m3 (46) 46.0
 
July 19, 2019, 3 p.m. 4.8 ppb (4) 1.0 ppb (1) N/A 4.0 ppb (4) N/A N/A N/A N/A N/A 10.0 μg/m3 (42) 42.0
 
July 19, 2019, 2 p.m. 5.9 ppb (5) 1.3 ppb (1) N/A 5.0 ppb (5) N/A N/A N/A N/A N/A 11.0 μg/m3 (46) 46.0
 
July 19, 2019, 1 p.m. 10.1 ppb (9) 2.4 ppb (2) N/A 8.0 ppb (7) N/A N/A N/A N/A N/A 16.0 μg/m3 (59) 59.0
 
July 19, 2019, noon 14.6 ppb (14) 3.4 ppb (3) N/A 11.0 ppb (10) N/A N/A N/A N/A N/A 9.0 μg/m3 (38) 38.0
 
July 19, 2019, 11 a.m. 14.2 ppb (13) 3.0 ppb (3) N/A 11.0 ppb (10) N/A N/A N/A N/A N/A 11.0 μg/m3 (46) 46.0
 
July 19, 2019, 10 a.m. 22.1 ppb (20) 4.5 ppb (4) N/A 18.0 ppb (17) N/A N/A N/A N/A N/A 15.0 μg/m3 (56) 56.0
 
July 19, 2019, 9 a.m. 16.3 ppb (15) 1.6 ppb (1) N/A 15.0 ppb (14) N/A N/A N/A N/A N/A 8.0 μg/m3 (33) 33.0
 
July 19, 2019, 8 a.m. 17.5 ppb (16) 2.2 ppb (2) N/A 15.0 ppb (14) N/A N/A N/A N/A N/A 13.0 μg/m3 (52) 52.0
 
July 19, 2019, 7 a.m. 10.3 ppb (10) 0.5 ppb (0) N/A 10.0 ppb (9) N/A N/A N/A N/A N/A 11.0 μg/m3 (46) 46.0
 
July 19, 2019, 6 a.m. 7.6 ppb (7) 0.2 ppb (0) N/A 7.0 ppb (6) N/A N/A N/A N/A N/A 10.0 μg/m3 (42) 42.0
 
July 19, 2019, 5 a.m. 11.3 ppb (10) 0.3 ppb (0) N/A 11.0 ppb (10) N/A N/A N/A N/A N/A 11.0 μg/m3 (46) 46.0
 
July 19, 2019, 4 a.m. 20.3 ppb (19) 0.8 ppb (1) N/A 20.0 ppb (19) N/A N/A N/A N/A N/A 13.0 μg/m3 (52) 52.0
 
July 19, 2019, 3 a.m. 28.3 ppb (26) 4.4 ppb (4) N/A 24.0 ppb (22) N/A N/A N/A N/A N/A 11.0 μg/m3 (46) 46.0
 
July 19, 2019, 2 a.m. 15.0 ppb (14) 1.9 ppb (2) N/A 13.0 ppb (12) N/A N/A N/A N/A N/A 5.0 μg/m3 (21) 21.0
 
July 19, 2019, 1 a.m. 6.3 ppb (6) 0.7 ppb (1) N/A 6.0 ppb (6) N/A N/A N/A N/A N/A 5.0 μg/m3 (21) 21.0
 
July 19, 2019, midnight 4.5 ppb (4) 0.3 ppb (0) N/A 4.0 ppb (4) N/A N/A N/A N/A N/A 7.0 μg/m3 (29) 29.0
 
July 18, 2019, 11 p.m. 4.9 ppb (5) 0.8 ppb (1) N/A 4.0 ppb (4) N/A N/A N/A N/A N/A 7.0 μg/m3 (29) 29.0
 
July 18, 2019, 10 p.m. 7.5 ppb (7) 2.1 ppb (2) N/A 5.0 ppb (5) N/A N/A N/A N/A N/A 6.0 μg/m3 (25) 25.0
 
July 18, 2019, 9 p.m. 7.7 ppb (7) 1.9 ppb (2) N/A 6.0 ppb (6) N/A N/A N/A N/A N/A 6.0 μg/m3 (25) 25.0
 
July 18, 2019, 8 p.m. 8.1 ppb (8) 1.8 ppb (2) N/A 6.0 ppb (6) N/A N/A N/A N/A N/A 3.0 μg/m3 (12) 12.0
 
July 18, 2019, 7 p.m. 5.6 ppb (5) 1.8 ppb (2) N/A 4.0 ppb (4) N/A N/A N/A N/A N/A 2.0 μg/m3 (8) 8.0
 
July 18, 2019, 6 p.m. 4.3 ppb (4) 1.3 ppb (1) N/A 3.0 ppb (3) N/A N/A N/A N/A N/A 5.0 μg/m3 (21) 21.0
 
July 18, 2019, 5 p.m. 5.1 ppb (5) 2.0 ppb (2) N/A 3.0 ppb (3) N/A N/A N/A N/A N/A 8.0 μg/m3 (33) 33.0
 
July 18, 2019, 4 p.m. 5.9 ppb (5) 1.7 ppb (2) N/A 4.0 ppb (4) N/A N/A N/A N/A N/A 7.0 μg/m3 (29) 29.0
 
July 18, 2019, 3 p.m. 5.9 ppb (5) 1.4 ppb (1) N/A 5.0 ppb (5) N/A N/A N/A N/A N/A 7.0 μg/m3 (29) 29.0
 
July 18, 2019, 2 p.m. 7.1 ppb (7) 1.5 ppb (1) N/A 6.0 ppb (6) N/A N/A N/A N/A N/A 9.0 μg/m3 (38) 38.0
 
July 18, 2019, 1 p.m. 13.0 ppb (12) 4.0 ppb (4) N/A 9.0 ppb (8) N/A N/A N/A N/A N/A 15.0 μg/m3 (56) 56.0
 
July 18, 2019, noon 22.3 ppb (21) 9.6 ppb (9) N/A 13.0 ppb (12) N/A N/A N/A N/A N/A 11.0 μg/m3 (46) 46.0
 
July 18, 2019, 11 a.m. 21.6 ppb (20) 8.9 ppb (8) N/A 13.0 ppb (12) N/A N/A N/A N/A N/A 13.0 μg/m3 (52) 52.0
 
July 18, 2019, 10 a.m. 29.5 ppb (27) 14.3 ppb (13) N/A 15.0 ppb (14) N/A N/A N/A N/A N/A 11.0 μg/m3 (46) 46.0
 
July 18, 2019, 9 a.m. 22.9 ppb (21) 7.6 ppb (7) N/A 15.0 ppb (14) N/A N/A N/A N/A N/A 15.0 μg/m3 (56) 56.0
 
July 18, 2019, 8 a.m. 17.4 ppb (16) 2.9 ppb (3) N/A 15.0 ppb (14) N/A N/A N/A N/A N/A 12.0 μg/m3 (50) 50.0
 
July 18, 2019, 7 a.m. 21.4 ppb (20) 4.5 ppb (4) N/A 17.0 ppb (16) N/A N/A N/A N/A N/A 15.0 μg/m3 (56) 56.0
 
July 18, 2019, 6 a.m. 20.9 ppb (19) 2.6 ppb (2) N/A 18.0 ppb (17) N/A N/A N/A N/A N/A 7.0 μg/m3 (29) 29.0
 
July 18, 2019, 5 a.m. 21.2 ppb (20) 2.9 ppb (3) N/A 18.0 ppb (17) N/A N/A N/A N/A N/A 10.0 μg/m3 (42) 42.0
 
July 18, 2019, 4 a.m. 15.7 ppb (15) 1.1 ppb (1) N/A 15.0 ppb (14) N/A N/A N/A N/A N/A 14.0 μg/m3 (54) 54.0
 
July 18, 2019, 1 a.m. 25.0 ppb (23) 3.9 ppb (4) N/A 21.0 ppb (19) N/A N/A N/A N/A N/A 10.0 μg/m3 (42) 42.0
 
July 18, 2019, midnight 15.5 ppb (14) 1.9 ppb (2) N/A 14.0 ppb (13) N/A N/A N/A N/A N/A 7.0 μg/m3 (29) 29.0
 
July 17, 2019, 11 p.m. 16.5 ppb (15) 2.6 ppb (2) N/A 14.0 ppb (13) N/A N/A N/A N/A N/A 6.0 μg/m3 (25) 25.0
 
July 17, 2019, 10 p.m. 5.3 ppb (5) 0.7 ppb (1) N/A 5.0 ppb (5) N/A N/A N/A N/A N/A 2.0 μg/m3 (8) 8.0
 
July 17, 2019, 9 p.m. 5.5 ppb (5) 1.2 ppb (1) N/A 4.0 ppb (4) N/A N/A N/A N/A N/A 21.0 μg/m3 (69) 69.0
 
July 17, 2019, 8 p.m. 7.0 ppb (6) 1.5 ppb (1) N/A 6.0 ppb (6) N/A N/A N/A N/A N/A 21.0 μg/m3 (69) 69.0
 
July 17, 2019, 7 p.m. 9.2 ppb (9) 1.8 ppb (2) N/A 7.0 ppb (6) N/A N/A N/A N/A N/A 18.0 μg/m3 (63) 63.0
 
July 17, 2019, 6 p.m. 9.4 ppb (9) 1.7 ppb (2) N/A 8.0 ppb (7) N/A N/A N/A N/A N/A 15.0 μg/m3 (56) 56.0
 
July 17, 2019, 5 p.m. 5.0 ppb (5) 1.1 ppb (1) N/A 4.0 ppb (4) N/A N/A N/A N/A N/A 11.0 μg/m3 (46) 46.0
 
July 17, 2019, 4 p.m. 4.1 ppb (4) 0.9 ppb (1) N/A 3.0 ppb (3) N/A N/A N/A N/A N/A 15.0 μg/m3 (56) 56.0
 
July 17, 2019, 3 p.m. 5.8 ppb (5) 1.0 ppb (1) N/A 5.0 ppb (5) N/A N/A N/A N/A N/A 13.0 μg/m3 (52) 52.0
 
July 17, 2019, 2 p.m. 18.9 ppb (18) 3.2 ppb (3) N/A 16.0 ppb (15) N/A N/A N/A N/A N/A 21.0 μg/m3 (69) 69.0
 
July 17, 2019, 1 p.m. 26.1 ppb (24) 7.1 ppb (7) N/A 19.0 ppb (18) N/A N/A N/A N/A N/A 23.0 μg/m3 (73) 73.0
 
July 17, 2019, noon 28.7 ppb (27) 9.4 ppb (9) N/A 19.0 ppb (18) N/A N/A N/A N/A N/A 20.0 μg/m3 (67) 67.0
 
July 17, 2019, 11 a.m. 27.5 ppb (25) 7.8 ppb (7) N/A 20.0 ppb (19) N/A N/A N/A N/A N/A 13.0 μg/m3 (52) 52.0
 
July 17, 2019, 10 a.m. 21.5 ppb (20) 4.4 ppb (4) N/A 17.0 ppb (16) N/A N/A N/A N/A N/A 14.0 μg/m3 (54) 54.0
 
July 17, 2019, 9 a.m. 18.3 ppb (17) 3.0 ppb (3) N/A 15.0 ppb (14) N/A N/A N/A N/A N/A 11.0 μg/m3 (46) 46.0
 
July 17, 2019, 8 a.m. 13.0 ppb (12) 0.6 ppb (1) N/A 12.0 ppb (11) N/A N/A N/A N/A N/A 12.0 μg/m3 (50) 50.0
 
July 17, 2019, 7 a.m. 10.5 ppb (10) 0.3 ppb (0) N/A 10.0 ppb (9) N/A N/A N/A N/A N/A 12.0 μg/m3 (50) 50.0
 
July 17, 2019, 6 a.m. 7.3 ppb (7) 0.5 ppb (0) N/A 7.0 ppb (6) N/A N/A N/A N/A N/A 14.0 μg/m3 (54) 54.0
 
July 17, 2019, 5 a.m. 9.2 ppb (9) 0.2 ppb (0) N/A 9.0 ppb (8) N/A N/A N/A N/A N/A 16.0 μg/m3 (59) 59.0
 
July 17, 2019, 4 a.m. 10.2 ppb (9) 0.7 ppb (1) N/A 9.0 ppb (8) N/A N/A N/A N/A N/A 15.0 μg/m3 (56) 56.0
 
July 17, 2019, 3 a.m. 10.7 ppb (10) 1.2 ppb (1) N/A 9.0 ppb (8) N/A N/A N/A N/A N/A 11.0 μg/m3 (46) 46.0
 
July 17, 2019, 2 a.m. 17.8 ppb (16) 1.6 ppb (1) N/A 16.0 ppb (15) N/A N/A N/A N/A N/A 12.0 μg/m3 (50) 50.0
 
July 17, 2019, 1 a.m. 9.4 ppb (9) 0.9 ppb (1) N/A 8.0 ppb (7) N/A N/A N/A N/A N/A 14.0 μg/m3 (54) 54.0
 
July 17, 2019, midnight 8.4 ppb (8) 1.2 ppb (1) N/A 7.0 ppb (6) N/A N/A N/A N/A N/A 16.0 μg/m3 (59) 59.0
 
July 16, 2019, 11 p.m. 10.0 ppb (9) 0.8 ppb (1) N/A 9.0 ppb (8) N/A N/A N/A N/A N/A 16.0 μg/m3 (59) 59.0
 
July 16, 2019, 10 p.m. 9.9 ppb (9) 1.1 ppb (1) N/A 9.0 ppb (8) N/A N/A N/A N/A N/A 16.0 μg/m3 (59) 59.0
 
July 16, 2019, 9 p.m. 8.9 ppb (8) 1.3 ppb (1) N/A 8.0 ppb (7) N/A N/A N/A N/A N/A 11.0 μg/m3 (46) 46.0
 
July 16, 2019, 8 p.m. 8.9 ppb (8) 1.8 ppb (2) N/A 7.0 ppb (6) N/A N/A N/A N/A N/A 14.0 μg/m3 (54) 54.0
 
July 16, 2019, 7 p.m. 8.0 ppb (7) 1.3 ppb (1) N/A 7.0 ppb (6) N/A N/A N/A N/A N/A 12.0 μg/m3 (50) 50.0
 
July 16, 2019, 6 p.m. 10.4 ppb (10) 1.7 ppb (2) N/A 9.0 ppb (8) N/A N/A N/A N/A N/A 17.0 μg/m3 (61) 61.0
 
July 16, 2019, 5 p.m. 9.8 ppb (9) 1.4 ppb (1) N/A 8.0 ppb (7) N/A N/A N/A N/A N/A 11.0 μg/m3 (46) 46.0
 
July 16, 2019, 4 p.m. 11.3 ppb (10) 1.2 ppb (1) N/A 10.0 ppb (9) N/A N/A N/A N/A N/A N/A 10.0
 
July 16, 2019, 3 p.m. 16.7 ppb (15) 2.6 ppb (2) N/A 14.0 ppb (13) N/A N/A N/A N/A N/A 17.0 μg/m3 (61) 61.0
 
July 16, 2019, 2 p.m. 26.3 ppb (24) 6.1 ppb (6) N/A 20.0 ppb (19) N/A N/A N/A N/A N/A 17.0 μg/m3 (61) 61.0
 
July 16, 2019, 1 p.m. 24.4 ppb (23) 5.9 ppb (5) N/A 18.0 ppb (17) N/A N/A N/A N/A N/A 12.0 μg/m3 (50) 50.0
 
July 16, 2019, noon 34.0 ppb (31) 9.4 ppb (9) N/A 25.0 ppb (23) N/A N/A N/A N/A N/A 13.0 μg/m3 (52) 52.0
 
July 16, 2019, 11 a.m. 39.3 ppb (36) 14.9 ppb (14) N/A 24.0 ppb (22) N/A N/A N/A N/A N/A 22.0 μg/m3 (71) 71.0
 
July 16, 2019, 10 a.m. 46.0 ppb (43) 21.0 ppb (19) N/A 25.0 ppb (23) N/A N/A N/A N/A N/A 18.0 μg/m3 (63) 63.0
 
July 16, 2019, 9 a.m. 30.1 ppb (28) 8.0 ppb (7) N/A 22.0 ppb (20) N/A N/A N/A N/A N/A 14.0 μg/m3 (54) 54.0
 
July 16, 2019, 8 a.m. 30.5 ppb (28) 5.4 ppb (5) N/A 25.0 ppb (23) N/A N/A N/A N/A N/A 17.0 μg/m3 (61) 61.0
 
July 16, 2019, 7 a.m. 23.9 ppb (22) 3.0 ppb (3) N/A 21.0 ppb (19) N/A N/A N/A N/A N/A 11.0 μg/m3 (46) 46.0
 
July 16, 2019, 6 a.m. 25.4 ppb (24) 1.3 ppb (1) N/A 24.0 ppb (22) N/A N/A N/A N/A N/A 15.0 μg/m3 (56) 56.0
 
July 16, 2019, 5 a.m. 17.4 ppb (16) 0.2 ppb (0) N/A 17.0 ppb (16) N/A N/A N/A N/A N/A 11.0 μg/m3 (46) 46.0
 
July 16, 2019, 4 a.m. 11.7 ppb (11) 0.4 ppb (0) N/A 11.0 ppb (10) N/A N/A N/A N/A N/A 10.0 μg/m3 (42) 42.0
 
July 16, 2019, 3 a.m. 11.9 ppb (11) 0.9 ppb (1) N/A 11.0 ppb (10) N/A N/A N/A N/A N/A 13.0 μg/m3 (52) 52.0
 
July 16, 2019, 2 a.m. 13.4 ppb (12) 1.0 ppb (1) N/A 12.0 ppb (11) N/A N/A N/A N/A N/A 13.0 μg/m3 (52) 52.0
 
July 16, 2019, 1 a.m. 8.3 ppb (8) 1.3 ppb (1) N/A 7.0 ppb (6) N/A N/A N/A N/A N/A 9.0 μg/m3 (38) 38.0
 
July 16, 2019, midnight 8.8 ppb (8) 0.7 ppb (1) N/A 8.0 ppb (7) N/A N/A N/A N/A N/A 7.0 μg/m3 (29) 29.0
 
July 15, 2019, 11 p.m. 9.8 ppb (9) 1.0 ppb (1) N/A 9.0 ppb (8) N/A N/A N/A N/A N/A 11.0 μg/m3 (46) 46.0
 
July 15, 2019, 10 p.m. 8.2 ppb (8) 1.6 ppb (1) N/A 7.0 ppb (6) N/A N/A N/A N/A N/A 9.0 μg/m3 (38) 38.0
 
July 15, 2019, 9 p.m. 6.3 ppb (6) 1.5 ppb (1) N/A 5.0 ppb (5) N/A N/A N/A N/A N/A 12.0 μg/m3 (50) 50.0
 
July 15, 2019, 8 p.m. 7.4 ppb (7) 1.7 ppb (2) N/A 6.0 ppb (6) N/A N/A N/A N/A N/A N/A 7.0
 
July 15, 2019, 7 p.m. 6.3 ppb (6) 1.1 ppb (1) N/A 5.0 ppb (5) N/A N/A N/A N/A N/A N/A 6.0
 
July 15, 2019, 6 p.m. 8.4 ppb (8) 1.0 ppb (1) N/A 7.0 ppb (6) N/A N/A N/A N/A N/A 10.0 μg/m3 (42) 42.0
 
July 15, 2019, 5 p.m. 7.4 ppb (7) 1.0 ppb (1) N/A 6.0 ppb (6) N/A N/A N/A N/A N/A 13.0 μg/m3 (52) 52.0
 
July 15, 2019, 4 p.m. 9.0 ppb (8) 1.8 ppb (2) N/A 7.0 ppb (6) N/A N/A N/A N/A N/A 9.0 μg/m3 (38) 38.0
 
July 15, 2019, 3 p.m. 5.3 ppb (5) 1.1 ppb (1) N/A 4.0 ppb (4) N/A N/A N/A N/A N/A 9.0 μg/m3 (38) 38.0
 
July 15, 2019, 2 p.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
 
July 15, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 11.0 μg/m3 (46) 46.0
 
July 15, 2019, noon 15.2 ppb (14) 6.1 ppb (6) N/A 9.0 ppb (8) N/A N/A N/A N/A N/A 7.0 μg/m3 (29) 29.0
 
July 15, 2019, 11 a.m. 16.6 ppb (15) 5.9 ppb (5) N/A 11.0 ppb (10) N/A N/A N/A N/A N/A 7.0 μg/m3 (29) 29.0
 
July 15, 2019, 10 a.m. 15.6 ppb (14) 3.8 ppb (4) N/A 12.0 ppb (11) N/A N/A N/A N/A N/A 10.0 μg/m3 (42) 42.0
 
July 15, 2019, 9 a.m. 6.8 ppb (6) 0.6 ppb (1) N/A 6.0 ppb (6) N/A N/A N/A N/A N/A 8.0 μg/m3 (33) 33.0
 
July 15, 2019, 8 a.m. 8.6 ppb (8) 0.2 ppb (0) N/A 8.0 ppb (7) N/A N/A N/A N/A N/A 7.0 μg/m3 (29) 29.0
 
July 15, 2019, 7 a.m. 7.6 ppb (7) -0.3 ppb (0) N/A 8.0 ppb (7) N/A N/A N/A N/A N/A 8.0 μg/m3 (33) 33.0
 
July 15, 2019, 6 a.m. 6.3 ppb (6) 0.0 ppb (0) N/A 6.0 ppb (6) N/A N/A N/A N/A N/A 6.0 μg/m3 (25) 25.0
 
July 15, 2019, 5 a.m. 7.0 ppb (6) 0.0 ppb (0) N/A 7.0 ppb (6) N/A N/A N/A N/A N/A 6.0 μg/m3 (25) 25.0