AQSQID: 240230002

Site Name: Piney Run

Location: Garrett Co, MD

Reporting: True, Located: True

Current AQI: 18.0

Garrett Co MD, US: 39.705799, -79.011902

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
July 24, 2019, 1 a.m. N/A N/A 0.7 ppb (1) 4.0 ppb (4) N/A 0.0 ppb (0) 24.0 ppb (18) 0.11 ppb (1) N/A 4.0 μg/m3 (17) 18.0
 
July 24, 2019, midnight N/A N/A 0.6 ppb (1) 3.0 ppb (3) N/A 0.0 ppb (0) 26.0 ppb (20) 0.11 ppb (1) N/A 6.0 μg/m3 (25) 25.0
 
July 23, 2019, 11 p.m. N/A N/A 0.7 ppb (1) 3.0 ppb (3) N/A 0.0 ppb (0) 27.0 ppb (21) 0.11 ppb (1) N/A 7.0 μg/m3 (29) 29.0
 
July 23, 2019, 10 p.m. N/A N/A 0.8 ppb (1) 3.0 ppb (3) N/A 0.0 ppb (0) 31.0 ppb (24) 0.11 ppb (1) N/A 6.0 μg/m3 (25) 25.0
 
July 23, 2019, 9 p.m. N/A N/A 0.8 ppb (1) 3.0 ppb (3) N/A 0.0 ppb (0) 33.0 ppb (25) 0.11 ppb (1) N/A 4.0 μg/m3 (17) 25.0
 
July 23, 2019, 8 p.m. N/A N/A 1.1 ppb (1) 3.0 ppb (3) N/A 0.0 ppb (0) 35.0 ppb (27) 0.1 ppb (1) N/A 6.0 μg/m3 (25) 27.0
 
July 23, 2019, 7 p.m. N/A N/A 1.5 ppb (1) 4.0 ppb (4) N/A 0.0 ppb (0) 38.0 ppb (29) 0.1 ppb (1) N/A 8.0 μg/m3 (33) 33.0
 
July 23, 2019, 6 p.m. N/A N/A 1.2 ppb (1) 4.0 ppb (4) N/A 0.0 ppb (0) 35.0 ppb (27) 0.1 ppb (1) N/A 7.0 μg/m3 (29) 29.0
 
July 23, 2019, 5 p.m. N/A N/A 1.2 ppb (1) 4.0 ppb (4) N/A 0.0 ppb (0) 32.0 ppb (25) 0.09 ppb (1) N/A 7.0 μg/m3 (29) 29.0
 
July 23, 2019, 4 p.m. N/A N/A 1.0 ppb (1) 4.0 ppb (4) N/A 0.0 ppb (0) 30.0 ppb (23) 0.09 ppb (1) N/A 8.0 μg/m3 (33) 33.0
 
July 23, 2019, 3 p.m. N/A N/A 0.8 ppb (1) 4.0 ppb (4) N/A 0.0 ppb (0) 27.0 ppb (21) 0.09 ppb (1) N/A N/A 21.0
 
July 23, 2019, 2 p.m. N/A N/A 0.6 ppb (1) 3.0 ppb (3) N/A 0.0 ppb (0) 26.0 ppb (20) 0.09 ppb (1) N/A 8.0 μg/m3 (33) 33.0
 
July 23, 2019, 1 p.m. N/A N/A 0.5 ppb (0) 3.0 ppb (3) N/A 0.0 ppb (0) 21.0 ppb (16) 0.09 ppb (1) N/A 5.0 μg/m3 (21) 21.0
 
July 23, 2019, noon N/A N/A 0.6 ppb (1) 4.0 ppb (4) N/A 0.0 ppb (0) 18.0 ppb (14) 0.09 ppb (1) N/A 6.0 μg/m3 (25) 25.0
 
July 23, 2019, 11 a.m. N/A N/A 0.7 ppb (1) 4.0 ppb (4) N/A 0.0 ppb (0) 15.0 ppb (12) 0.1 ppb (1) N/A 7.0 μg/m3 (29) 29.0
 
July 23, 2019, 10 a.m. N/A N/A 0.8 ppb (1) 4.0 ppb (4) N/A 0.0 ppb (0) 17.0 ppb (13) 0.1 ppb (1) N/A 4.0 μg/m3 (17) 17.0
 
July 23, 2019, 9 a.m. N/A N/A 0.8 ppb (1) 4.0 ppb (4) N/A 0.0 ppb (0) 18.0 ppb (14) 0.11 ppb (1) N/A 5.0 μg/m3 (21) 21.0
 
July 23, 2019, 8 a.m. N/A N/A 0.8 ppb (1) 4.0 ppb (4) N/A N/A 21.0 ppb (16) 0.11 ppb (1) N/A 7.0 μg/m3 (29) 29.0
 
July 23, 2019, 7 a.m. N/A N/A 0.7 ppb (1) 4.0 ppb (4) N/A 0.0 ppb (0) 22.0 ppb (17) N/A N/A 6.0 μg/m3 (25) 25.0
 
July 23, 2019, 6 a.m. N/A N/A 1.0 ppb (1) N/A N/A 0.0 ppb (0) 22.0 ppb (17) 0.1 ppb (1) N/A 4.0 μg/m3 (17) 17.0
 
July 23, 2019, 5 a.m. N/A N/A 0.6 ppb (1) 4.0 ppb (4) N/A 0.0 ppb (0) 21.0 ppb (16) 0.1 ppb (1) N/A 3.0 μg/m3 (12) 16.0
 
July 23, 2019, 4 a.m. N/A N/A 1.0 ppb (1) 4.0 ppb (4) N/A 0.0 ppb (0) 21.0 ppb (16) 0.1 ppb (1) N/A 4.0 μg/m3 (17) 17.0
 
July 23, 2019, 3 a.m. N/A N/A 0.8 ppb (1) 4.0 ppb (4) N/A 0.0 ppb (0) 23.0 ppb (18) 0.09 ppb (1) N/A 4.0 μg/m3 (17) 18.0
 
July 23, 2019, 2 a.m. N/A N/A 1.1 ppb (1) 4.0 ppb (4) N/A 0.0 ppb (0) 27.0 ppb (21) 0.09 ppb (1) N/A 3.0 μg/m3 (12) 21.0
 
July 23, 2019, 1 a.m. N/A N/A 1.6 ppb (1) 5.0 ppb (5) N/A 0.0 ppb (0) 28.0 ppb (22) 0.1 ppb (1) N/A 3.0 μg/m3 (12) 22.0
 
July 23, 2019, midnight N/A N/A 1.2 ppb (1) 5.0 ppb (5) N/A 0.0 ppb (0) 26.0 ppb (20) 0.1 ppb (1) N/A 1.0 μg/m3 (4) 20.0
 
July 22, 2019, 11 p.m. N/A N/A 0.3 ppb (0) 3.0 ppb (3) N/A 0.0 ppb (0) 28.0 ppb (22) 0.09 ppb (1) N/A 0.0 μg/m3 (0) 22.0
 
July 22, 2019, 10 p.m. N/A N/A 0.2 ppb (0) 3.0 ppb (3) N/A 0.0 ppb (0) 31.0 ppb (24) 0.08 ppb (1) N/A 1.0 μg/m3 (4) 24.0
 
July 22, 2019, 9 p.m. N/A N/A 0.3 ppb (0) 3.0 ppb (3) N/A 0.0 ppb (0) 32.0 ppb (25) 0.08 ppb (1) N/A 2.0 μg/m3 (8) 25.0
 
July 22, 2019, 8 p.m. N/A N/A 0.3 ppb (0) 3.0 ppb (3) N/A 0.0 ppb (0) 27.0 ppb (21) 0.08 ppb (1) N/A 3.0 μg/m3 (12) 21.0
 
July 22, 2019, 7 p.m. N/A N/A 0.4 ppb (0) 3.0 ppb (3) N/A 0.0 ppb (0) 28.0 ppb (22) 0.08 ppb (1) N/A 5.0 μg/m3 (21) 22.0
 
July 22, 2019, 6 p.m. N/A N/A 0.5 ppb (0) 4.0 ppb (4) N/A 0.0 ppb (0) 30.0 ppb (23) 0.08 ppb (1) N/A 6.0 μg/m3 (25) 25.0
 
July 22, 2019, 5 p.m. N/A N/A 0.2 ppb (0) 3.0 ppb (3) N/A 0.0 ppb (0) 28.0 ppb (22) 0.09 ppb (1) N/A 3.0 μg/m3 (12) 22.0
 
July 22, 2019, 4 p.m. N/A N/A 0.2 ppb (0) 3.0 ppb (3) N/A 0.0 ppb (0) 28.0 ppb (22) 0.09 ppb (1) N/A 3.0 μg/m3 (12) 22.0
 
July 22, 2019, 3 p.m. N/A N/A 0.3 ppb (0) 3.0 ppb (3) N/A 0.0 ppb (0) 28.0 ppb (22) 0.09 ppb (1) N/A 5.0 μg/m3 (21) 22.0
 
July 22, 2019, 2 p.m. N/A N/A 0.2 ppb (0) 3.0 ppb (3) N/A 0.0 ppb (0) 29.0 ppb (22) 0.09 ppb (1) N/A 3.0 μg/m3 (12) 22.0
 
July 22, 2019, 1 p.m. N/A N/A 0.4 ppb (0) 3.0 ppb (3) N/A 0.0 ppb (0) 29.0 ppb (22) 0.09 ppb (1) N/A 2.0 μg/m3 (8) 22.0
 
July 22, 2019, noon N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 28.0 ppb (22) 0.09 ppb (1) N/A 1.0 μg/m3 (4) 22.0
 
July 22, 2019, 11 a.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 28.0 ppb (22) 0.1 ppb (1) N/A 4.0 μg/m3 (17) 22.0
 
July 22, 2019, 10 a.m. N/A N/A 0.6 ppb (1) 4.0 ppb (4) N/A 0.0 ppb (0) 27.0 ppb (21) 0.1 ppb (1) N/A 3.0 μg/m3 (12) 21.0
 
July 22, 2019, 9 a.m. N/A N/A 0.7 ppb (1) 4.0 ppb (4) N/A 0.0 ppb (0) 34.0 ppb (26) 0.1 ppb (1) N/A 4.0 μg/m3 (17) 26.0
 
July 22, 2019, 8 a.m. N/A N/A 0.7 ppb (1) 4.0 ppb (4) N/A 0.0 ppb (0) 33.0 ppb (25) 0.09 ppb (1) N/A 4.0 μg/m3 (17) 25.0
 
July 22, 2019, 7 a.m. N/A N/A 1.2 ppb (1) 4.0 ppb (4) N/A 0.0 ppb (0) 24.0 ppb (18) 0.1 ppb (1) N/A 1.0 μg/m3 (4) 18.0
 
July 22, 2019, 6 a.m. N/A N/A 1.2 ppb (1) 4.0 ppb (4) N/A 0.0 ppb (0) 20.0 ppb (15) 0.1 ppb (1) N/A 6.0 μg/m3 (25) 25.0
 
July 22, 2019, 5 a.m. N/A N/A 1.4 ppb (1) 4.0 ppb (4) N/A 0.0 ppb (0) 28.0 ppb (22) 0.1 ppb (1) N/A 10.0 μg/m3 (42) 42.0
 
July 22, 2019, 4 a.m. N/A N/A 1.1 ppb (1) 4.0 ppb (4) N/A 0.0 ppb (0) 25.0 ppb (19) 0.11 ppb (1) N/A 10.0 μg/m3 (42) 42.0
 
July 22, 2019, 3 a.m. N/A N/A 0.9 ppb (1) 4.0 ppb (4) N/A 0.0 ppb (0) 24.0 ppb (18) 0.09 ppb (1) N/A 6.0 μg/m3 (25) 25.0
 
July 22, 2019, 2 a.m. N/A N/A 0.9 ppb (1) 4.0 ppb (4) N/A 0.0 ppb (0) 21.0 ppb (16) 0.09 ppb (1) N/A 5.0 μg/m3 (21) 21.0
 
July 22, 2019, 1 a.m. N/A N/A 1.5 ppb (1) 5.0 ppb (5) N/A 0.0 ppb (0) 31.0 ppb (24) 0.09 ppb (1) N/A 6.0 μg/m3 (25) 25.0
 
July 22, 2019, midnight N/A N/A 0.8 ppb (1) 4.0 ppb (4) N/A 0.0 ppb (0) 33.0 ppb (25) 0.09 ppb (1) N/A 7.0 μg/m3 (29) 29.0
 
July 21, 2019, 11 p.m. N/A N/A 0.8 ppb (1) 4.0 ppb (4) N/A 1.0 ppb (1) 40.0 ppb (31) 0.1 ppb (1) N/A 9.0 μg/m3 (38) 38.0
 
July 21, 2019, 10 p.m. N/A N/A 1.1 ppb (1) 4.0 ppb (4) N/A 1.0 ppb (1) 39.0 ppb (30) 0.1 ppb (1) N/A 12.0 μg/m3 (50) 50.0
 
July 21, 2019, 9 p.m. N/A N/A 1.4 ppb (1) 4.0 ppb (4) N/A 0.0 ppb (0) 40.0 ppb (31) 0.09 ppb (1) N/A 9.0 μg/m3 (38) 38.0
 
July 21, 2019, 8 p.m. N/A N/A 1.4 ppb (1) 3.0 ppb (3) N/A 0.0 ppb (0) 45.0 ppb (35) 0.09 ppb (1) N/A 9.0 μg/m3 (38) 38.0
 
July 21, 2019, 7 p.m. N/A N/A 1.6 ppb (1) 4.0 ppb (4) N/A 0.0 ppb (0) 47.0 ppb (36) 0.09 ppb (1) N/A 9.0 μg/m3 (38) 38.0
 
July 21, 2019, 6 p.m. N/A N/A 2.1 ppb (2) 4.0 ppb (4) N/A 1.0 ppb (1) 54.0 ppb (42) 0.09 ppb (1) N/A 13.0 μg/m3 (52) 52.0
 
July 21, 2019, 5 p.m. N/A N/A 1.7 ppb (2) 4.0 ppb (4) N/A 0.0 ppb (0) 50.0 ppb (38) 0.09 ppb (1) N/A 13.0 μg/m3 (52) 52.0
 
July 21, 2019, 4 p.m. N/A N/A 1.1 ppb (1) 3.0 ppb (3) N/A 0.0 ppb (0) 42.0 ppb (32) 0.09 ppb (1) N/A 9.0 μg/m3 (38) 38.0
 
July 21, 2019, 3 p.m. N/A N/A 1.1 ppb (1) 3.0 ppb (3) N/A 0.0 ppb (0) 38.0 ppb (29) 0.1 ppb (1) N/A 9.0 μg/m3 (38) 38.0
 
July 21, 2019, 2 p.m. N/A N/A 1.0 ppb (1) 3.0 ppb (3) N/A 0.0 ppb (0) 36.0 ppb (28) 0.1 ppb (1) N/A 10.0 μg/m3 (42) 42.0
 
July 21, 2019, 1 p.m. N/A N/A 1.4 ppb (1) 4.0 ppb (4) N/A 1.0 ppb (1) 34.0 ppb (26) 0.11 ppb (1) N/A 11.0 μg/m3 (46) 46.0
 
July 21, 2019, noon N/A N/A 2.1 ppb (2) 4.0 ppb (4) N/A 1.0 ppb (1) 31.0 ppb (24) 0.11 ppb (1) N/A 17.0 μg/m3 (61) 61.0
 
July 21, 2019, 11 a.m. N/A N/A 1.9 ppb (2) 5.0 ppb (5) N/A 0.0 ppb (0) 25.0 ppb (19) 0.11 ppb (1) N/A 12.0 μg/m3 (50) 50.0
 
July 21, 2019, 10 a.m. N/A N/A 0.7 ppb (1) 4.0 ppb (4) N/A 0.0 ppb (0) 23.0 ppb (18) 0.11 ppb (1) N/A 12.0 μg/m3 (50) 50.0
 
July 21, 2019, 9 a.m. N/A N/A 1.0 ppb (1) 4.0 ppb (4) N/A 0.0 ppb (0) 22.0 ppb (17) 0.11 ppb (1) N/A 14.0 μg/m3 (54) 54.0
 
July 21, 2019, 8 a.m. N/A N/A 1.2 ppb (1) 4.0 ppb (4) N/A 0.0 ppb (0) 28.0 ppb (22) 0.11 ppb (1) N/A 15.0 μg/m3 (56) 56.0
 
July 21, 2019, 7 a.m. N/A N/A 1.3 ppb (1) 4.0 ppb (4) N/A 0.0 ppb (0) 27.0 ppb (21) 0.11 ppb (1) N/A 10.0 μg/m3 (42) 42.0
 
July 21, 2019, 6 a.m. N/A N/A 3.2 ppb (3) 6.0 ppb (6) N/A 0.0 ppb (0) 20.0 ppb (15) 0.12 ppb (1) N/A 14.0 μg/m3 (54) 54.0
 
July 21, 2019, 5 a.m. N/A N/A 3.1 ppb (3) 6.0 ppb (6) N/A 0.0 ppb (0) 25.0 ppb (19) 0.12 ppb (1) N/A 14.0 μg/m3 (54) 54.0
 
July 21, 2019, 4 a.m. N/A N/A 2.0 ppb (2) 5.0 ppb (5) N/A 0.0 ppb (0) 25.0 ppb (19) 0.12 ppb (1) N/A 10.0 μg/m3 (42) 42.0
 
July 21, 2019, 3 a.m. N/A N/A 2.6 ppb (2) 5.0 ppb (5) N/A 0.0 ppb (0) 24.0 ppb (18) 0.13 ppb (1) N/A 12.0 μg/m3 (50) 50.0
 
July 21, 2019, 2 a.m. N/A N/A 2.3 ppb (2) 5.0 ppb (5) N/A 0.0 ppb (0) 27.0 ppb (21) 0.12 ppb (1) N/A 10.0 μg/m3 (42) 42.0
 
July 21, 2019, 1 a.m. N/A N/A 1.9 ppb (2) 5.0 ppb (5) N/A 1.0 ppb (1) 33.0 ppb (25) 0.1 ppb (1) N/A 8.0 μg/m3 (33) 33.0
 
July 21, 2019, midnight N/A N/A 1.6 ppb (1) 4.0 ppb (4) N/A 1.0 ppb (1) 34.0 ppb (26) 0.11 ppb (1) N/A 16.0 μg/m3 (59) 59.0
 
July 20, 2019, 11 p.m. N/A N/A 1.7 ppb (2) 4.0 ppb (4) N/A 1.0 ppb (1) 39.0 ppb (30) 0.1 ppb (1) N/A 13.0 μg/m3 (52) 52.0
 
July 20, 2019, 10 p.m. N/A N/A 0.9 ppb (1) 4.0 ppb (4) N/A 1.0 ppb (1) 37.0 ppb (28) 0.1 ppb (1) N/A 14.0 μg/m3 (54) 54.0
 
July 20, 2019, 9 p.m. N/A N/A 1.0 ppb (1) 3.0 ppb (3) N/A 0.0 ppb (0) 36.0 ppb (28) 0.09 ppb (1) N/A 9.0 μg/m3 (38) 38.0
 
July 20, 2019, 8 p.m. N/A N/A 0.9 ppb (1) 3.0 ppb (3) N/A 0.0 ppb (0) 37.0 ppb (28) 0.08 ppb (1) N/A 11.0 μg/m3 (46) 46.0
 
July 20, 2019, 7 p.m. N/A N/A 1.0 ppb (1) 3.0 ppb (3) N/A 0.0 ppb (0) 36.0 ppb (28) 0.08 ppb (1) N/A 7.0 μg/m3 (29) 29.0
 
July 20, 2019, 6 p.m. N/A N/A 1.1 ppb (1) 3.0 ppb (3) N/A 0.0 ppb (0) 37.0 ppb (28) 0.07 ppb (1) N/A 12.0 μg/m3 (50) 50.0
 
July 20, 2019, 5 p.m. N/A N/A 1.2 ppb (1) 3.0 ppb (3) N/A 0.0 ppb (0) 39.0 ppb (30) 0.08 ppb (1) N/A 14.0 μg/m3 (54) 54.0
 
July 20, 2019, 4 p.m. N/A N/A 1.1 ppb (1) 3.0 ppb (3) N/A 0.0 ppb (0) 39.0 ppb (30) 0.08 ppb (1) N/A 12.0 μg/m3 (50) 50.0
 
July 20, 2019, 3 p.m. N/A N/A 1.4 ppb (1) 4.0 ppb (4) N/A 0.0 ppb (0) 37.0 ppb (28) 0.09 ppb (1) N/A 11.0 μg/m3 (46) 46.0
 
July 20, 2019, 2 p.m. N/A N/A 1.8 ppb (2) 4.0 ppb (4) N/A 1.0 ppb (1) 37.0 ppb (28) 0.1 ppb (1) N/A 20.0 μg/m3 (67) 67.0
 
July 20, 2019, 1 p.m. N/A N/A 1.9 ppb (2) 4.0 ppb (4) N/A 1.0 ppb (1) 32.0 ppb (25) 0.11 ppb (1) N/A 16.0 μg/m3 (59) 59.0
 
July 20, 2019, noon N/A N/A 2.0 ppb (2) 4.0 ppb (4) N/A 1.0 ppb (1) 30.0 ppb (23) 0.12 ppb (1) N/A 13.0 μg/m3 (52) 52.0
 
July 20, 2019, 11 a.m. N/A N/A 2.1 ppb (2) 5.0 ppb (5) N/A 1.0 ppb (1) 25.0 ppb (19) 0.12 ppb (1) N/A 13.0 μg/m3 (52) 52.0
 
July 20, 2019, 10 a.m. N/A N/A 1.8 ppb (2) 5.0 ppb (5) N/A 0.0 ppb (0) 27.0 ppb (21) 0.12 ppb (1) N/A 11.0 μg/m3 (46) 46.0
 
July 20, 2019, 9 a.m. N/A N/A 1.5 ppb (1) 4.0 ppb (4) N/A 1.0 ppb (1) 29.0 ppb (22) 0.12 ppb (1) N/A 10.0 μg/m3 (42) 42.0
 
July 20, 2019, 8 a.m. N/A N/A 1.8 ppb (2) 4.0 ppb (4) N/A 0.0 ppb (0) 28.0 ppb (22) 0.12 ppb (1) N/A 10.0 μg/m3 (42) 42.0
 
July 20, 2019, 7 a.m. N/A N/A 1.1 ppb (1) 4.0 ppb (4) N/A 0.0 ppb (0) 30.0 ppb (23) 0.12 ppb (1) N/A 10.0 μg/m3 (42) 42.0
 
July 20, 2019, 6 a.m. N/A N/A 1.0 ppb (1) 4.0 ppb (4) N/A 0.0 ppb (0) 29.0 ppb (22) 0.11 ppb (1) N/A 11.0 μg/m3 (46) 46.0
 
July 20, 2019, 5 a.m. N/A N/A 0.9 ppb (1) 4.0 ppb (4) N/A 0.0 ppb (0) 27.0 ppb (21) 0.12 ppb (1) N/A 10.0 μg/m3 (42) 42.0
 
July 20, 2019, 4 a.m. N/A N/A 1.0 ppb (1) 4.0 ppb (4) N/A 0.0 ppb (0) 25.0 ppb (19) 0.12 ppb (1) N/A 10.0 μg/m3 (42) 42.0
 
July 20, 2019, 3 a.m. N/A N/A 1.6 ppb (1) 5.0 ppb (5) N/A 0.0 ppb (0) 25.0 ppb (19) 0.14 ppb (2) N/A 15.0 μg/m3 (56) 56.0
 
July 20, 2019, 2 a.m. N/A N/A 1.9 ppb (2) 5.0 ppb (5) N/A 0.0 ppb (0) 33.0 ppb (25) 0.14 ppb (2) N/A 17.0 μg/m3 (61) 61.0
 
July 20, 2019, 1 a.m. N/A N/A 1.8 ppb (2) 5.0 ppb (5) N/A 1.0 ppb (1) 36.0 ppb (28) 0.14 ppb (2) N/A 16.0 μg/m3 (59) 59.0
 
July 20, 2019, midnight N/A N/A 1.0 ppb (1) 4.0 ppb (4) N/A 1.0 ppb (1) 38.0 ppb (29) 0.11 ppb (1) N/A 16.0 μg/m3 (59) 59.0
 
July 19, 2019, 11 p.m. N/A N/A 1.3 ppb (1) 4.0 ppb (4) N/A 2.0 ppb (3) 38.0 ppb (29) 0.11 ppb (1) N/A 18.0 μg/m3 (63) 63.0
 
July 19, 2019, 10 p.m. N/A N/A 1.0 ppb (1) 4.0 ppb (4) N/A 1.0 ppb (1) 37.0 ppb (28) 0.15 ppb (2) N/A 9.0 μg/m3 (38) 38.0
 
July 19, 2019, 9 p.m. N/A N/A 0.8 ppb (1) 3.0 ppb (3) N/A 0.0 ppb (0) 34.0 ppb (26) 0.16 ppb (2) N/A 8.0 μg/m3 (33) 33.0
 
July 19, 2019, 8 p.m. N/A N/A 0.9 ppb (1) 3.0 ppb (3) N/A 0.0 ppb (0) 36.0 ppb (28) 0.16 ppb (2) N/A 6.0 μg/m3 (25) 28.0
 
July 19, 2019, 7 p.m. N/A N/A 0.8 ppb (1) 3.0 ppb (3) N/A 0.0 ppb (0) 39.0 ppb (30) 0.11 ppb (1) N/A 6.0 μg/m3 (25) 30.0
 
July 19, 2019, 6 p.m. N/A N/A 0.7 ppb (1) 3.0 ppb (3) N/A 0.0 ppb (0) 38.0 ppb (29) 0.08 ppb (1) N/A 8.0 μg/m3 (33) 33.0
 
July 19, 2019, 5 p.m. N/A N/A 0.7 ppb (1) 3.0 ppb (3) N/A 0.0 ppb (0) N/A 0.07 ppb (1) N/A 6.0 μg/m3 (25) 25.0
 
July 19, 2019, 4 p.m. N/A N/A N/A 3.0 ppb (3) N/A 1.0 ppb (1) N/A 0.07 ppb (1) N/A 7.0 μg/m3 (29) 29.0
 
July 19, 2019, 3 p.m. N/A N/A 1.3 ppb (1) 3.0 ppb (3) N/A 1.0 ppb (1) N/A 0.09 ppb (1) N/A 9.0 μg/m3 (38) 38.0
 
July 19, 2019, 2 p.m. N/A N/A N/A 4.0 ppb (4) N/A 1.0 ppb (1) N/A 0.1 ppb (1) N/A 19.0 μg/m3 (65) 65.0
 
July 19, 2019, 1 p.m. N/A N/A 1.6 ppb (1) 4.0 ppb (4) N/A 1.0 ppb (1) 35.0 ppb (27) 0.1 ppb (1) N/A 14.0 μg/m3 (54) 54.0
 
July 19, 2019, noon N/A N/A 1.6 ppb (1) 4.0 ppb (4) N/A 0.0 ppb (0) 29.0 ppb (22) 0.11 ppb (1) N/A 23.0 μg/m3 (73) 73.0
 
July 19, 2019, 11 a.m. N/A N/A 1.2 ppb (1) 4.0 ppb (4) N/A 0.0 ppb (0) 23.0 ppb (18) 0.11 ppb (1) N/A 13.0 μg/m3 (52) 52.0
 
July 19, 2019, 10 a.m. N/A N/A 1.7 ppb (2) 5.0 ppb (5) N/A 0.0 ppb (0) 18.0 ppb (14) 0.11 ppb (1) N/A 15.0 μg/m3 (56) 56.0
 
July 19, 2019, 9 a.m. N/A N/A 1.1 ppb (1) 4.0 ppb (4) N/A 0.0 ppb (0) 20.0 ppb (15) 0.1 ppb (1) N/A 13.0 μg/m3 (52) 52.0
 
July 19, 2019, 8 a.m. N/A N/A 0.8 ppb (1) 4.0 ppb (4) N/A 0.0 ppb (0) 18.0 ppb (14) 0.1 ppb (1) N/A 10.0 μg/m3 (42) 42.0
 
July 19, 2019, 7 a.m. N/A N/A 1.1 ppb (1) 4.0 ppb (4) N/A 0.0 ppb (0) 14.0 ppb (11) 0.11 ppb (1) N/A 9.0 μg/m3 (38) 38.0
 
July 19, 2019, 6 a.m. N/A N/A 1.4 ppb (1) 4.0 ppb (4) N/A 0.0 ppb (0) 20.0 ppb (15) 0.12 ppb (1) N/A 8.0 μg/m3 (33) 33.0
 
July 16, 2019, 9 p.m. N/A N/A 0.5 ppb (0) 3.0 ppb (3) N/A 0.0 ppb (0) 26.0 ppb (20) 0.08 ppb (1) N/A 6.0 μg/m3 (25) 25.0
 
July 16, 2019, 8 p.m. N/A N/A 0.5 ppb (0) 3.0 ppb (3) N/A 0.0 ppb (0) 27.0 ppb (21) 0.07 ppb (1) N/A 7.0 μg/m3 (29) 29.0
 
July 16, 2019, 7 p.m. N/A N/A 0.7 ppb (1) 3.0 ppb (3) N/A 0.0 ppb (0) 29.0 ppb (22) 0.08 ppb (1) N/A 4.0 μg/m3 (17) 22.0
 
July 16, 2019, 6 p.m. N/A N/A 0.7 ppb (1) 3.0 ppb (3) N/A 0.0 ppb (0) N/A 0.09 ppb (1) N/A 7.0 μg/m3 (29) 29.0
 
July 16, 2019, 5 p.m. N/A N/A 0.8 ppb (1) 3.0 ppb (3) N/A 0.0 ppb (0) N/A 0.11 ppb (1) N/A 11.0 μg/m3 (46) 46.0
 
July 16, 2019, 4 p.m. N/A N/A 0.9 ppb (1) 4.0 ppb (4) N/A 0.0 ppb (0) N/A 0.48 ppb (5) N/A 9.0 μg/m3 (38) 38.0
 
July 16, 2019, 3 p.m. N/A N/A 1.1 ppb (1) 4.0 ppb (4) N/A 0.0 ppb (0) N/A 0.12 ppb (1) N/A N/A 4.0
 
July 16, 2019, 2 p.m. N/A N/A 1.9 ppb (2) 4.0 ppb (4) N/A 1.0 ppb (1) N/A 0.13 ppb (1) N/A 13.0 μg/m3 (52) 52.0
 
July 16, 2019, 1 p.m. N/A N/A 1.3 ppb (1) 4.0 ppb (4) N/A 1.0 ppb (1) N/A 0.13 ppb (1) N/A 14.0 μg/m3 (54) 54.0
 
July 16, 2019, noon N/A N/A 1.8 ppb (2) 5.0 ppb (5) N/A 0.0 ppb (0) N/A 0.15 ppb (2) N/A 12.0 μg/m3 (50) 50.0
 
July 16, 2019, 11 a.m. N/A N/A 2.2 ppb (2) 5.0 ppb (5) N/A 0.0 ppb (0) N/A 0.15 ppb (2) N/A 8.0 μg/m3 (33) 33.0
 
July 16, 2019, 10 a.m. N/A N/A 1.6 ppb (1) 5.0 ppb (5) N/A 0.0 ppb (0) N/A 0.14 ppb (2) N/A 8.0 μg/m3 (33) 33.0
 
July 16, 2019, 9 a.m. N/A N/A 1.8 ppb (2) 5.0 ppb (5) N/A 0.0 ppb (0) 0.0 ppb (0) 0.15 ppb (2) N/A 6.0 μg/m3 (25) 25.0
 
July 16, 2019, 8 a.m. N/A N/A 2.8 ppb (3) 6.0 ppb (6) N/A N/A 3.0 ppb (2) 0.15 ppb (2) N/A 7.0 μg/m3 (29) 29.0
 
July 16, 2019, 7 a.m. N/A N/A 2.4 ppb (2) 5.0 ppb (5) N/A 0.0 ppb (0) 0.0 ppb (0) N/A N/A 6.0 μg/m3 (25) 25.0
 
July 16, 2019, 6 a.m. N/A N/A 2.8 ppb (3) N/A N/A 0.0 ppb (0) 1.0 ppb (1) 0.15 ppb (2) N/A 8.0 μg/m3 (33) 33.0
 
July 16, 2019, 5 a.m. N/A N/A 3.0 ppb (3) 6.0 ppb (6) N/A 0.0 ppb (0) 1.0 ppb (1) 0.15 ppb (2) N/A 7.0 μg/m3 (29) 29.0
 
July 16, 2019, 4 a.m. N/A N/A 1.7 ppb (2) 5.0 ppb (5) N/A 0.0 ppb (0) 0.0 ppb (0) 0.15 ppb (2) N/A 6.0 μg/m3 (25) 25.0
 
July 16, 2019, 3 a.m. N/A N/A 1.1 ppb (1) 4.0 ppb (4) N/A 0.0 ppb (0) 4.0 ppb (3) 0.14 ppb (2) N/A 5.0 μg/m3 (21) 21.0
 
July 16, 2019, 2 a.m. N/A N/A 1.0 ppb (1) 4.0 ppb (4) N/A 0.0 ppb (0) 11.0 ppb (8) 0.14 ppb (2) N/A 6.0 μg/m3 (25) 25.0
 
July 16, 2019, 1 a.m. N/A N/A 1.0 ppb (1) 4.0 ppb (4) N/A 0.0 ppb (0) 22.0 ppb (17) 0.13 ppb (1) N/A 6.0 μg/m3 (25) 25.0
 
July 16, 2019, midnight N/A N/A 0.9 ppb (1) 4.0 ppb (4) N/A 0.0 ppb (0) 36.0 ppb (28) 0.14 ppb (2) N/A 7.0 μg/m3 (29) 29.0
 
July 15, 2019, 11 p.m. N/A N/A 0.9 ppb (1) 3.0 ppb (3) N/A 0.0 ppb (0) 36.0 ppb (28) 0.13 ppb (1) N/A 7.0 μg/m3 (29) 29.0
 
July 15, 2019, 10 p.m. N/A N/A 1.2 ppb (1) 3.0 ppb (3) N/A 0.0 ppb (0) 37.0 ppb (28) 0.12 ppb (1) N/A 7.0 μg/m3 (29) 29.0
 
July 15, 2019, 9 p.m. N/A N/A 1.0 ppb (1) 3.0 ppb (3) N/A 0.0 ppb (0) 38.0 ppb (29) 0.12 ppb (1) N/A 3.0 μg/m3 (12) 29.0
 
July 15, 2019, 8 p.m. N/A N/A 0.8 ppb (1) 3.0 ppb (3) N/A 0.0 ppb (0) 39.0 ppb (30) 0.11 ppb (1) N/A 1.0 μg/m3 (4) 30.0
 
July 15, 2019, 7 p.m. N/A N/A 1.1 ppb (1) 3.0 ppb (3) N/A 0.0 ppb (0) N/A 0.11 ppb (1) N/A 3.0 μg/m3 (12) 12.0
 
July 15, 2019, 6 p.m. N/A N/A 0.9 ppb (1) 3.0 ppb (3) N/A 0.0 ppb (0) N/A 0.11 ppb (1) N/A 6.0 μg/m3 (25) 25.0
 
July 15, 2019, 5 p.m. N/A N/A 0.9 ppb (1) 3.0 ppb (3) N/A 0.0 ppb (0) 48.0 ppb (37) 0.11 ppb (1) N/A 7.0 μg/m3 (29) 37.0
 
July 15, 2019, 4 p.m. N/A N/A 1.0 ppb (1) 3.0 ppb (3) N/A 1.0 ppb (1) 48.0 ppb (37) 0.12 ppb (1) N/A 7.0 μg/m3 (29) 37.0
 
July 15, 2019, 3 p.m. N/A N/A 1.0 ppb (1) 3.0 ppb (3) N/A 1.0 ppb (1) 49.0 ppb (38) 0.12 ppb (1) N/A 7.0 μg/m3 (29) 38.0
 
July 15, 2019, 2 p.m. N/A N/A 1.1 ppb (1) 3.0 ppb (3) N/A 1.0 ppb (1) N/A 0.12 ppb (1) N/A 6.0 μg/m3 (25) 25.0
 
July 15, 2019, 1 p.m. N/A N/A N/A 4.0 ppb (4) N/A 0.0 ppb (0) N/A 0.14 ppb (2) N/A 8.0 μg/m3 (33) 33.0
 
July 15, 2019, noon N/A N/A N/A 5.0 ppb (5) N/A 0.0 ppb (0) N/A 0.16 ppb (2) N/A 8.0 μg/m3 (33) 33.0
 
July 15, 2019, 11 a.m. N/A N/A 5.0 ppb (5) 6.0 ppb (6) N/A 0.0 ppb (0) N/A 0.15 ppb (2) N/A 8.0 μg/m3 (33) 33.0
 
July 15, 2019, 10 a.m. N/A N/A 1.2 ppb (1) 4.0 ppb (4) N/A 0.0 ppb (0) 2.0 ppb (2) 0.14 ppb (2) N/A 5.0 μg/m3 (21) 21.0
 
July 15, 2019, 9 a.m. N/A N/A 1.1 ppb (1) 4.0 ppb (4) N/A 0.0 ppb (0) 4.0 ppb (3) 0.14 ppb (2) N/A 4.0 μg/m3 (17) 17.0
 
July 15, 2019, 8 a.m. N/A N/A 1.2 ppb (1) 4.0 ppb (4) N/A 0.0 ppb (0) 6.0 ppb (5) 0.14 ppb (2) N/A 2.0 μg/m3 (8) 8.0
 
July 15, 2019, 7 a.m. N/A N/A 1.3 ppb (1) 4.0 ppb (4) N/A 0.0 ppb (0) 8.0 ppb (6) 0.15 ppb (2) N/A 4.0 μg/m3 (17) 17.0
 
July 15, 2019, 6 a.m. N/A N/A 1.1 ppb (1) 4.0 ppb (4) N/A 0.0 ppb (0) 16.0 ppb (12) 0.15 ppb (2) N/A 8.0 μg/m3 (33) 33.0
 
July 15, 2019, 5 a.m. N/A N/A 0.9 ppb (1) 4.0 ppb (4) N/A 0.0 ppb (0) 23.0 ppb (18) 0.14 ppb (2) N/A 7.0 μg/m3 (29) 29.0
 
July 15, 2019, 4 a.m. N/A N/A 0.9 ppb (1) 4.0 ppb (4) N/A 0.0 ppb (0) 24.0 ppb (18) 0.14 ppb (2) N/A 5.0 μg/m3 (21) 21.0
 
July 15, 2019, 3 a.m. N/A N/A 0.9 ppb (1) 4.0 ppb (4) N/A 0.0 ppb (0) 31.0 ppb (24) 0.14 ppb (2) N/A 5.0 μg/m3 (21) 24.0
 
July 15, 2019, 2 a.m. N/A N/A 0.9 ppb (1) 4.0 ppb (4) N/A 0.0 ppb (0) 36.0 ppb (28) 0.14 ppb (2) N/A 6.0 μg/m3 (25) 28.0
 
July 15, 2019, 1 a.m. N/A N/A 1.1 ppb (1) 4.0 ppb (4) N/A 0.0 ppb (0) 37.0 ppb (28) 0.14 ppb (2) N/A 8.0 μg/m3 (33) 33.0
 
July 15, 2019, midnight N/A N/A 0.9 ppb (1) 4.0 ppb (4) N/A 0.0 ppb (0) 39.0 ppb (30) 0.13 ppb (1) N/A 9.0 μg/m3 (38) 38.0
 
July 14, 2019, 11 p.m. N/A N/A 0.9 ppb (1) 4.0 ppb (4) N/A 0.0 ppb (0) 43.0 ppb (33) 0.13 ppb (1) N/A 6.0 μg/m3 (25) 33.0
 
July 14, 2019, 10 p.m. N/A N/A 0.8 ppb (1) 3.0 ppb (3) N/A 0.0 ppb (0) 45.0 ppb (35) 0.12 ppb (1) N/A 6.0 μg/m3 (25) 35.0
 
July 14, 2019, 9 p.m. N/A N/A 1.0 ppb (1) 3.0 ppb (3) N/A 0.0 ppb (0) 44.0 ppb (34) 0.12 ppb (1) N/A 7.0 μg/m3 (29) 34.0
 
July 14, 2019, 8 p.m. N/A N/A 0.8 ppb (1) 3.0 ppb (3) N/A 0.0 ppb (0) 44.0 ppb (34) 0.12 ppb (1) N/A 6.0 μg/m3 (25) 34.0
 
July 14, 2019, 7 p.m. N/A N/A 0.8 ppb (1) 3.0 ppb (3) N/A 0.0 ppb (0) 44.0 ppb (34) 0.11 ppb (1) N/A 4.0 μg/m3 (17) 34.0
 
July 14, 2019, 6 p.m. N/A N/A 1.1 ppb (1) 3.0 ppb (3) N/A 0.0 ppb (0) 45.0 ppb (35) 0.12 ppb (1) N/A 6.0 μg/m3 (25) 35.0