AQSQID: 230050029

Site Name: Portland - Deering Oaks

Location: Portland, ME

Reporting: True, Located: True

Current AQI: 46.0

Portland ME, US: 43.660248, -70.268967

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
Sept. 19, 2019, 4 a.m. 28.0 ppb (26) 12.5 ppb (12) N/A 16.0 ppb (15) N/A 1.0 ppb (1) 1.0 ppb (1) N/A N/A 11.0 μg/m3 (46) 46.0
 
Sept. 19, 2019, 3 a.m. 47.8 ppb (44) 27.9 ppb (26) N/A 20.0 ppb (19) N/A 1.0 ppb (1) 1.0 ppb (1) N/A N/A 18.0 μg/m3 (63) 63.0
 
Sept. 19, 2019, 2 a.m. 41.3 ppb (38) 19.7 ppb (18) N/A 22.0 ppb (20) N/A 1.0 ppb (1) 1.0 ppb (1) N/A N/A 15.0 μg/m3 (56) 56.0
 
Sept. 19, 2019, 1 a.m. 20.0 ppb (19) 2.1 ppb (2) N/A 18.0 ppb (17) N/A 0.0 ppb (0) 7.0 ppb (5) N/A N/A 11.0 μg/m3 (46) 46.0
 
Sept. 19, 2019, midnight 12.1 ppb (11) 0.2 ppb (0) N/A 12.0 ppb (11) N/A 0.0 ppb (0) 15.0 ppb (12) N/A N/A 10.0 μg/m3 (42) 42.0
 
Sept. 18, 2019, 11 p.m. 6.0 ppb (6) 0.0 ppb (0) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 22.0 ppb (17) N/A N/A 8.0 μg/m3 (33) 33.0
 
Sept. 18, 2019, 10 p.m. 8.4 ppb (8) 1.6 ppb (1) N/A 7.0 ppb (6) N/A 0.0 ppb (0) 23.0 ppb (18) N/A N/A 9.0 μg/m3 (38) 38.0
 
Sept. 18, 2019, 9 p.m. 12.6 ppb (12) 3.5 ppb (3) N/A 9.0 ppb (8) N/A 0.0 ppb (0) 23.0 ppb (18) N/A N/A 7.0 μg/m3 (29) 29.0
 
Sept. 18, 2019, 8 p.m. 6.6 ppb (6) 2.9 ppb (3) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 27.0 ppb (21) N/A N/A 5.0 μg/m3 (21) 21.0
 
Sept. 18, 2019, 7 p.m. 17.0 ppb (16) 7.5 ppb (7) N/A 9.0 ppb (8) N/A 0.0 ppb (0) 23.0 ppb (18) N/A N/A 5.0 μg/m3 (21) 21.0
 
Sept. 18, 2019, 6 p.m. 7.9 ppb (7) 4.1 ppb (4) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 26.0 ppb (20) N/A N/A 5.0 μg/m3 (21) 21.0
 
Sept. 18, 2019, 5 p.m. 5.8 ppb (5) 2.7 ppb (3) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 28.0 ppb (22) N/A N/A 8.0 μg/m3 (33) 33.0
 
Sept. 18, 2019, 4 p.m. 6.1 ppb (6) 3.8 ppb (4) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 27.0 ppb (21) N/A N/A 9.0 μg/m3 (38) 38.0
 
Sept. 18, 2019, 3 p.m. 5.5 ppb (5) 2.5 ppb (2) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 27.0 ppb (21) N/A N/A 10.0 μg/m3 (42) 42.0
 
Sept. 18, 2019, 2 p.m. 5.9 ppb (5) 3.0 ppb (3) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 24.0 ppb (18) N/A N/A 11.0 μg/m3 (46) 46.0
 
Sept. 18, 2019, 1 p.m. 5.9 ppb (5) 3.0 ppb (3) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 20.0 ppb (15) N/A N/A 8.0 μg/m3 (33) 33.0
 
Sept. 18, 2019, noon 9.0 ppb (8) 4.7 ppb (4) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 17.0 ppb (13) N/A N/A 8.0 μg/m3 (33) 33.0
 
Sept. 18, 2019, 11 a.m. 9.1 ppb (8) 4.8 ppb (4) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 15.0 ppb (12) N/A N/A 10.0 μg/m3 (42) 42.0
 
Sept. 18, 2019, 10 a.m. 6.2 ppb (6) 2.7 ppb (3) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 16.0 ppb (12) N/A N/A 8.0 μg/m3 (33) 33.0
 
Sept. 18, 2019, 9 a.m. 3.8 ppb (4) 0.7 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 16.0 ppb (12) N/A N/A 7.0 μg/m3 (29) 29.0
 
Sept. 18, 2019, 8 a.m. 3.3 ppb (3) 0.6 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 16.0 ppb (12) N/A N/A 7.0 μg/m3 (29) 29.0
 
Sept. 18, 2019, 7 a.m. 2.8 ppb (3) 0.3 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 16.0 ppb (12) N/A N/A 6.0 μg/m3 (25) 25.0
 
Sept. 18, 2019, 6 a.m. 2.9 ppb (3) 0.3 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 16.0 ppb (12) N/A N/A 7.0 μg/m3 (29) 29.0
 
Sept. 18, 2019, 5 a.m. 2.7 ppb (3) 0.3 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 18.0 ppb (14) N/A N/A 6.0 μg/m3 (25) 25.0
 
Sept. 18, 2019, 4 a.m. 2.3 ppb (2) 0.3 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 20.0 ppb (15) N/A N/A 7.0 μg/m3 (29) 29.0
 
Sept. 18, 2019, 3 a.m. 3.1 ppb (3) 0.7 ppb (1) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 20.0 ppb (15) N/A N/A 5.0 μg/m3 (21) 21.0
 
Sept. 18, 2019, 2 a.m. 3.5 ppb (3) 1.0 ppb (1) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 21.0 ppb (16) N/A N/A 6.0 μg/m3 (25) 25.0
 
Sept. 18, 2019, 1 a.m. 3.2 ppb (3) 1.1 ppb (1) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 20.0 ppb (15) N/A N/A 6.0 μg/m3 (25) 25.0
 
Sept. 18, 2019, midnight 4.7 ppb (4) 1.5 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 19.0 ppb (15) N/A N/A 7.0 μg/m3 (29) 29.0
 
Sept. 17, 2019, 11 p.m. 8.0 ppb (7) 2.8 ppb (3) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 16.0 ppb (12) N/A N/A 8.0 μg/m3 (33) 33.0
 
Sept. 17, 2019, 10 p.m. 10.6 ppb (10) 4.0 ppb (4) N/A 7.0 ppb (6) N/A 0.0 ppb (0) 14.0 ppb (11) N/A N/A 5.0 μg/m3 (21) 21.0
 
Sept. 17, 2019, 9 p.m. 8.4 ppb (8) 3.6 ppb (3) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 15.0 ppb (12) N/A N/A 4.0 μg/m3 (17) 17.0
 
Sept. 17, 2019, 8 p.m. 8.8 ppb (8) 4.0 ppb (4) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 16.0 ppb (12) N/A N/A 6.0 μg/m3 (25) 25.0
 
Sept. 17, 2019, 7 p.m. 7.9 ppb (7) 4.2 ppb (4) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 15.0 ppb (12) N/A N/A 10.0 μg/m3 (42) 42.0
 
Sept. 17, 2019, 6 p.m. 8.3 ppb (8) 4.0 ppb (4) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 17.0 ppb (13) N/A N/A 7.0 μg/m3 (29) 29.0
 
Sept. 17, 2019, 5 p.m. 4.0 ppb (4) 1.9 ppb (2) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 18.0 ppb (14) N/A N/A 8.0 μg/m3 (33) 33.0
 
Sept. 17, 2019, 4 p.m. 5.2 ppb (5) 2.4 ppb (2) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 17.0 ppb (13) N/A N/A 8.0 μg/m3 (33) 33.0
 
Sept. 17, 2019, 3 p.m. 6.1 ppb (6) 3.2 ppb (3) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 16.0 ppb (12) N/A N/A 7.0 μg/m3 (29) 29.0
 
Sept. 17, 2019, 2 p.m. 6.0 ppb (6) 3.4 ppb (3) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 13.0 ppb (10) N/A N/A 10.0 μg/m3 (42) 42.0
 
Sept. 17, 2019, 1 p.m. 6.4 ppb (6) 3.7 ppb (3) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 14.0 ppb (11) N/A N/A N/A 11.0
 
Sept. 17, 2019, noon 10.2 ppb (9) 4.9 ppb (5) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 13.0 ppb (10) N/A N/A 10.0 μg/m3 (42) 42.0
 
Sept. 17, 2019, 11 a.m. 13.1 ppb (12) 4.4 ppb (4) N/A 9.0 ppb (8) N/A 0.0 ppb (0) 10.0 ppb (8) N/A N/A 10.0 μg/m3 (42) 42.0
 
Sept. 17, 2019, 10 a.m. 8.7 ppb (8) 0.8 ppb (1) N/A 8.0 ppb (7) N/A 0.0 ppb (0) 9.0 ppb (7) N/A N/A 9.0 μg/m3 (38) 38.0
 
Sept. 17, 2019, 9 a.m. 8.0 ppb (7) 0.6 ppb (1) N/A 7.0 ppb (6) N/A 0.0 ppb (0) 10.0 ppb (8) N/A N/A 9.0 μg/m3 (38) 38.0
 
Sept. 17, 2019, 8 a.m. 5.5 ppb (5) 0.5 ppb (0) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 13.0 ppb (10) N/A N/A 9.0 μg/m3 (38) 38.0
 
Sept. 17, 2019, 7 a.m. 2.4 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 18.0 ppb (14) N/A N/A 6.0 μg/m3 (25) 25.0
 
Sept. 17, 2019, 6 a.m. 3.4 ppb (3) 0.0 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 17.0 ppb (13) N/A N/A 6.0 μg/m3 (25) 25.0
 
Sept. 17, 2019, 5 a.m. 4.0 ppb (4) 0.0 ppb (0) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 18.0 ppb (14) N/A N/A 9.0 μg/m3 (38) 38.0
 
Sept. 17, 2019, 4 a.m. 3.6 ppb (3) 0.0 ppb (0) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 21.0 ppb (16) N/A N/A 8.0 μg/m3 (33) 33.0
 
Sept. 17, 2019, 3 a.m. 3.6 ppb (3) 0.0 ppb (0) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 21.0 ppb (16) N/A N/A 9.0 μg/m3 (38) 38.0
 
Sept. 17, 2019, 2 a.m. 3.6 ppb (3) 0.0 ppb (0) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 23.0 ppb (18) N/A N/A 8.0 μg/m3 (33) 33.0
 
Sept. 17, 2019, 1 a.m. 8.4 ppb (8) 0.2 ppb (0) N/A 8.0 ppb (7) N/A 0.0 ppb (0) 20.0 ppb (15) N/A N/A 9.0 μg/m3 (38) 38.0
 
Sept. 17, 2019, midnight 5.3 ppb (5) 0.1 ppb (0) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 24.0 ppb (18) N/A N/A 8.0 μg/m3 (33) 33.0
 
Sept. 16, 2019, 11 p.m. 4.7 ppb (4) 0.2 ppb (0) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 25.0 ppb (19) N/A N/A 8.0 μg/m3 (33) 33.0
 
Sept. 16, 2019, 10 p.m. 5.1 ppb (5) 0.4 ppb (0) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 23.0 ppb (18) N/A N/A 10.0 μg/m3 (42) 42.0
 
Sept. 16, 2019, 9 p.m. 7.9 ppb (7) 1.1 ppb (1) N/A 7.0 ppb (6) N/A 0.0 ppb (0) 19.0 ppb (15) N/A N/A 7.0 μg/m3 (29) 29.0
 
Sept. 16, 2019, 8 p.m. 5.9 ppb (5) 1.1 ppb (1) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 22.0 ppb (17) N/A N/A 6.0 μg/m3 (25) 25.0
 
Sept. 16, 2019, 7 p.m. 5.1 ppb (5) 1.3 ppb (1) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 23.0 ppb (18) N/A N/A 8.0 μg/m3 (33) 33.0
 
Sept. 16, 2019, 6 p.m. 4.8 ppb (4) 1.6 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 23.0 ppb (18) N/A N/A 7.0 μg/m3 (29) 29.0
 
Sept. 16, 2019, 5 p.m. 4.0 ppb (4) 1.5 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 24.0 ppb (18) N/A N/A 6.0 μg/m3 (25) 25.0
 
Sept. 16, 2019, 4 p.m. 3.1 ppb (3) 1.0 ppb (1) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 24.0 ppb (18) N/A N/A 5.0 μg/m3 (21) 21.0
 
Sept. 16, 2019, 3 p.m. 3.7 ppb (3) 1.4 ppb (1) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 24.0 ppb (18) N/A N/A 7.0 μg/m3 (29) 29.0
 
Sept. 16, 2019, 2 p.m. 3.6 ppb (3) 1.3 ppb (1) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 23.0 ppb (18) N/A N/A 7.0 μg/m3 (29) 29.0
 
Sept. 16, 2019, 1 p.m. 6.5 ppb (6) 2.2 ppb (2) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 19.0 ppb (15) N/A N/A 7.0 μg/m3 (29) 29.0
 
Sept. 16, 2019, noon 15.9 ppb (15) 4.5 ppb (4) N/A 11.0 ppb (10) N/A 0.0 ppb (0) 12.0 ppb (9) N/A N/A 12.0 μg/m3 (50) 50.0
 
Sept. 16, 2019, 11 a.m. 16.5 ppb (15) 2.4 ppb (2) N/A 14.0 ppb (13) N/A 0.0 ppb (0) 10.0 ppb (8) N/A N/A 8.0 μg/m3 (33) 33.0
 
Sept. 16, 2019, 10 a.m. 13.7 ppb (13) 0.9 ppb (1) N/A 13.0 ppb (12) N/A 0.0 ppb (0) 10.0 ppb (8) N/A N/A 8.0 μg/m3 (33) 33.0
 
Sept. 16, 2019, 9 a.m. 5.4 ppb (5) 0.5 ppb (0) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 19.0 ppb (15) N/A N/A 7.0 μg/m3 (29) 29.0
 
Sept. 16, 2019, 8 a.m. 3.3 ppb (3) 0.1 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 22.0 ppb (17) N/A N/A 7.0 μg/m3 (29) 29.0
 
Sept. 16, 2019, 7 a.m. 4.2 ppb (4) 0.1 ppb (0) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 20.0 ppb (15) N/A N/A 8.0 μg/m3 (33) 33.0
 
Sept. 16, 2019, 6 a.m. 2.9 ppb (3) 0.0 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 22.0 ppb (17) N/A N/A 11.0 μg/m3 (46) 46.0
 
Sept. 16, 2019, 5 a.m. 2.7 ppb (3) 0.1 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 22.0 ppb (17) N/A N/A 7.0 μg/m3 (29) 29.0
 
Sept. 16, 2019, 4 a.m. 6.0 ppb (6) 0.1 ppb (0) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 17.0 ppb (13) N/A N/A 7.0 μg/m3 (29) 29.0
 
Sept. 16, 2019, 3 a.m. 4.7 ppb (4) 0.1 ppb (0) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 20.0 ppb (15) N/A N/A 9.0 μg/m3 (38) 38.0
 
Sept. 16, 2019, 2 a.m. 5.5 ppb (5) 0.0 ppb (0) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 22.0 ppb (17) N/A N/A 9.0 μg/m3 (38) 38.0
 
Sept. 16, 2019, 1 a.m. 5.1 ppb (5) 0.0 ppb (0) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 25.0 ppb (19) N/A N/A 9.0 μg/m3 (38) 38.0
 
Sept. 16, 2019, midnight 5.3 ppb (5) 0.0 ppb (0) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 27.0 ppb (21) N/A N/A 11.0 μg/m3 (46) 46.0
 
Sept. 15, 2019, 11 p.m. 5.4 ppb (5) 0.0 ppb (0) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 28.0 ppb (22) N/A N/A 8.0 μg/m3 (33) 33.0
 
Sept. 15, 2019, 10 p.m. 4.4 ppb (4) 0.0 ppb (0) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 31.0 ppb (24) N/A N/A 9.0 μg/m3 (38) 38.0
 
Sept. 15, 2019, 9 p.m. 2.3 ppb (2) 0.1 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 33.0 ppb (25) N/A N/A 13.0 μg/m3 (52) 52.0
 
Sept. 15, 2019, 8 p.m. 1.8 ppb (2) 0.2 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 33.0 ppb (25) N/A N/A 6.0 μg/m3 (25) 25.0
 
Sept. 15, 2019, 7 p.m. 2.1 ppb (2) 0.3 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 33.0 ppb (25) N/A N/A 7.0 μg/m3 (29) 29.0
 
Sept. 15, 2019, 6 p.m. 1.4 ppb (1) 0.2 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 33.0 ppb (25) N/A N/A 7.0 μg/m3 (29) 29.0
 
Sept. 15, 2019, 5 p.m. 1.4 ppb (1) 0.2 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 32.0 ppb (25) N/A N/A 8.0 μg/m3 (33) 33.0
 
Sept. 15, 2019, 4 p.m. 1.6 ppb (1) 0.4 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 30.0 ppb (23) N/A N/A 10.0 μg/m3 (42) 42.0
 
Sept. 15, 2019, 3 p.m. 1.7 ppb (2) 0.3 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 29.0 ppb (22) N/A N/A 12.0 μg/m3 (50) 50.0
 
Sept. 15, 2019, 2 p.m. 1.8 ppb (2) 0.3 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 27.0 ppb (21) N/A N/A 9.0 μg/m3 (38) 38.0
 
Sept. 15, 2019, 1 p.m. 5.0 ppb (5) 1.6 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 19.0 ppb (15) N/A N/A 10.0 μg/m3 (42) 42.0
 
Sept. 15, 2019, noon 5.1 ppb (5) 1.5 ppb (1) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 15.0 ppb (12) N/A N/A 8.0 μg/m3 (33) 33.0
 
Sept. 15, 2019, 11 a.m. 3.3 ppb (3) 0.6 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 12.0 ppb (9) N/A N/A 6.0 μg/m3 (25) 25.0
 
Sept. 15, 2019, 10 a.m. 11.2 ppb (10) 2.3 ppb (2) N/A 9.0 ppb (8) N/A 0.0 ppb (0) 5.0 ppb (4) N/A N/A 8.0 μg/m3 (33) 33.0
 
Sept. 15, 2019, 9 a.m. 3.0 ppb (3) 0.1 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 12.0 ppb (9) N/A N/A 2.0 μg/m3 (8) 9.0
 
Sept. 15, 2019, 8 a.m. 2.2 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 13.0 ppb (10) N/A N/A 5.0 μg/m3 (21) 21.0
 
Sept. 15, 2019, 7 a.m. 3.5 ppb (3) 0.0 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 11.0 ppb (8) N/A N/A 6.0 μg/m3 (25) 25.0
 
Sept. 15, 2019, 6 a.m. 4.1 ppb (4) 0.1 ppb (0) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 11.0 ppb (8) N/A N/A 7.0 μg/m3 (29) 29.0
 
Sept. 15, 2019, 5 a.m. 6.0 ppb (6) 0.1 ppb (0) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 11.0 ppb (8) N/A N/A 6.0 μg/m3 (25) 25.0
 
Sept. 15, 2019, 4 a.m. 4.7 ppb (4) 0.1 ppb (0) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 14.0 ppb (11) N/A N/A 9.0 μg/m3 (38) 38.0
 
Sept. 15, 2019, 3 a.m. 4.5 ppb (4) 0.4 ppb (0) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 17.0 ppb (13) N/A N/A 8.0 μg/m3 (33) 33.0
 
Sept. 15, 2019, 2 a.m. 6.1 ppb (6) 0.4 ppb (0) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 17.0 ppb (13) N/A N/A 6.0 μg/m3 (25) 25.0
 
Sept. 15, 2019, 1 a.m. 4.5 ppb (4) 0.4 ppb (0) N/A 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
 
Sept. 15, 2019, midnight 3.2 ppb (3) 0.3 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 26.0 ppb (20) N/A N/A 7.0 μg/m3 (29) 29.0
 
Sept. 14, 2019, 11 p.m. 3.6 ppb (3) 0.3 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 26.0 ppb (20) N/A N/A 6.0 μg/m3 (25) 25.0
 
Sept. 14, 2019, 10 p.m. 3.5 ppb (3) 0.4 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 27.0 ppb (21) N/A N/A 6.0 μg/m3 (25) 25.0
 
Sept. 14, 2019, 9 p.m. 3.2 ppb (3) 0.6 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 29.0 ppb (22) N/A N/A 6.0 μg/m3 (25) 25.0
 
Sept. 14, 2019, 8 p.m. 1.8 ppb (2) 0.3 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 30.0 ppb (23) N/A N/A 7.0 μg/m3 (29) 29.0
 
Sept. 14, 2019, 7 p.m. 1.9 ppb (2) 0.4 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 30.0 ppb (23) N/A N/A 9.0 μg/m3 (38) 38.0
 
Sept. 14, 2019, 6 p.m. 2.0 ppb (2) 0.5 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 30.0 ppb (23) N/A N/A 11.0 μg/m3 (46) 46.0
 
Sept. 14, 2019, 5 p.m. 3.2 ppb (3) 0.8 ppb (1) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 28.0 ppb (22) N/A N/A 8.0 μg/m3 (33) 33.0
 
Sept. 14, 2019, 4 p.m. 4.6 ppb (4) 2.2 ppb (2) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 27.0 ppb (21) N/A N/A 7.0 μg/m3 (29) 29.0
 
Sept. 14, 2019, 3 p.m. 2.7 ppb (3) 1.0 ppb (1) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 28.0 ppb (22) N/A N/A 8.0 μg/m3 (33) 33.0
 
Sept. 14, 2019, 2 p.m. 3.9 ppb (4) 1.4 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 27.0 ppb (21) N/A N/A 7.0 μg/m3 (29) 29.0
 
Sept. 14, 2019, 1 p.m. 5.5 ppb (5) 1.0 ppb (1) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 23.0 ppb (18) N/A N/A 9.0 μg/m3 (38) 38.0
 
Sept. 14, 2019, noon 6.4 ppb (6) 1.4 ppb (1) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 21.0 ppb (16) N/A N/A 10.0 μg/m3 (42) 42.0
 
Sept. 14, 2019, 11 a.m. 7.9 ppb (7) 1.1 ppb (1) N/A 7.0 ppb (6) N/A 0.0 ppb (0) 17.0 ppb (13) N/A N/A 6.0 μg/m3 (25) 25.0
 
Sept. 14, 2019, 10 a.m. 8.6 ppb (8) 0.6 ppb (1) N/A 8.0 ppb (7) N/A 0.0 ppb (0) 13.0 ppb (10) N/A N/A 6.0 μg/m3 (25) 25.0
 
Sept. 14, 2019, 9 a.m. 10.4 ppb (10) 1.1 ppb (1) N/A 9.0 ppb (8) N/A 0.0 ppb (0) 9.0 ppb (7) N/A N/A 7.0 μg/m3 (29) 29.0
 
Sept. 14, 2019, 8 a.m. 21.4 ppb (20) 5.9 ppb (5) N/A 15.0 ppb (14) N/A 0.0 ppb (0) 3.0 ppb (2) N/A N/A 10.0 μg/m3 (42) 42.0
 
Sept. 14, 2019, 7 a.m. 11.9 ppb (11) 0.6 ppb (1) N/A 11.0 ppb (10) N/A 0.0 ppb (0) 6.0 ppb (5) N/A N/A 8.0 μg/m3 (33) 33.0
 
Sept. 14, 2019, 6 a.m. 18.4 ppb (17) 3.3 ppb (3) N/A 15.0 ppb (14) N/A 0.0 ppb (0) 5.0 ppb (4) N/A N/A 10.0 μg/m3 (42) 42.0
 
Sept. 14, 2019, 5 a.m. 21.0 ppb (19) 2.4 ppb (2) N/A 19.0 ppb (18) N/A 0.0 ppb (0) 4.0 ppb (3) N/A N/A 6.0 μg/m3 (25) 25.0
 
Sept. 14, 2019, 4 a.m. 18.4 ppb (17) 0.2 ppb (0) N/A 18.0 ppb (17) N/A 0.0 ppb (0) 6.0 ppb (5) N/A N/A 8.0 μg/m3 (33) 33.0
 
Sept. 14, 2019, 3 a.m. 12.8 ppb (12) 0.2 ppb (0) N/A 13.0 ppb (12) N/A 0.0 ppb (0) 15.0 ppb (12) N/A N/A 9.0 μg/m3 (38) 38.0
 
Sept. 14, 2019, 2 a.m. 4.3 ppb (4) 0.5 ppb (0) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 24.0 ppb (18) N/A N/A 9.0 μg/m3 (38) 38.0
 
Sept. 14, 2019, 1 a.m. 3.6 ppb (3) 0.3 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 24.0 ppb (18) N/A N/A 9.0 μg/m3 (38) 38.0
 
Sept. 14, 2019, midnight 8.0 ppb (7) 2.7 ppb (3) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 23.0 ppb (18) N/A N/A 8.0 μg/m3 (33) 33.0
 
Sept. 13, 2019, 11 p.m. 6.6 ppb (6) 2.4 ppb (2) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 24.0 ppb (18) N/A N/A 5.0 μg/m3 (21) 21.0
 
Sept. 13, 2019, 10 p.m. 5.4 ppb (5) 2.9 ppb (3) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 27.0 ppb (21) N/A N/A 6.0 μg/m3 (25) 25.0
 
Sept. 13, 2019, 9 p.m. 5.3 ppb (5) 2.8 ppb (3) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 29.0 ppb (22) N/A N/A 9.0 μg/m3 (38) 38.0
 
Sept. 13, 2019, 8 p.m. 3.1 ppb (3) 1.4 ppb (1) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 29.0 ppb (22) N/A N/A 8.0 μg/m3 (33) 33.0
 
Sept. 13, 2019, 7 p.m. 4.9 ppb (5) 2.8 ppb (3) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 29.0 ppb (22) N/A N/A 5.0 μg/m3 (21) 22.0
 
Sept. 13, 2019, 6 p.m. 5.4 ppb (5) 2.2 ppb (2) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 29.0 ppb (22) N/A N/A 5.0 μg/m3 (21) 22.0
 
Sept. 13, 2019, 5 p.m. 4.0 ppb (4) 1.9 ppb (2) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 27.0 ppb (21) N/A N/A 5.0 μg/m3 (21) 21.0
 
Sept. 13, 2019, 4 p.m. 5.8 ppb (5) 3.0 ppb (3) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 25.0 ppb (19) N/A N/A 7.0 μg/m3 (29) 29.0
 
Sept. 13, 2019, 3 p.m. 4.9 ppb (5) 2.7 ppb (3) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 24.0 ppb (18) N/A N/A 6.0 μg/m3 (25) 25.0
 
Sept. 13, 2019, 2 p.m. 6.6 ppb (6) 3.2 ppb (3) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 20.0 ppb (15) N/A N/A 9.0 μg/m3 (38) 38.0
 
Sept. 13, 2019, 1 p.m. 6.8 ppb (6) 3.7 ppb (3) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 18.0 ppb (14) N/A N/A 6.0 μg/m3 (25) 25.0
 
Sept. 13, 2019, noon 8.6 ppb (8) 4.7 ppb (4) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 15.0 ppb (12) N/A N/A 6.0 μg/m3 (25) 25.0
 
Sept. 13, 2019, 11 a.m. 11.5 ppb (11) 5.1 ppb (5) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 11.0 ppb (8) N/A N/A 6.0 μg/m3 (25) 25.0
 
Sept. 13, 2019, 10 a.m. 8.7 ppb (8) 2.6 ppb (2) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 11.0 ppb (8) N/A N/A 9.0 μg/m3 (38) 38.0
 
Sept. 13, 2019, 9 a.m. 5.0 ppb (5) 0.8 ppb (1) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 12.0 ppb (9) N/A N/A 7.0 μg/m3 (29) 29.0
 
Sept. 13, 2019, 8 a.m. 4.7 ppb (4) 1.0 ppb (1) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 13.0 ppb (10) N/A N/A 4.0 μg/m3 (17) 17.0
 
Sept. 13, 2019, 7 a.m. 3.0 ppb (3) 0.5 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 14.0 ppb (11) N/A N/A 6.0 μg/m3 (25) 25.0
 
Sept. 13, 2019, 6 a.m. 5.2 ppb (5) 0.8 ppb (1) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 10.0 ppb (8) N/A N/A 9.0 μg/m3 (38) 38.0
 
Sept. 13, 2019, 5 a.m. 7.3 ppb (7) 0.4 ppb (0) N/A 7.0 ppb (6) N/A 0.0 ppb (0) 5.0 ppb (4) N/A N/A 9.0 μg/m3 (38) 38.0
 
Sept. 13, 2019, 4 a.m. 9.4 ppb (9) 0.7 ppb (1) N/A 9.0 ppb (8) N/A 0.0 ppb (0) 4.0 ppb (3) N/A N/A 8.0 μg/m3 (33) 33.0
 
Sept. 13, 2019, 3 a.m. 12.7 ppb (12) 1.7 ppb (2) N/A 11.0 ppb (10) N/A 0.0 ppb (0) 5.0 ppb (4) N/A N/A 10.0 μg/m3 (42) 42.0
 
Sept. 13, 2019, 2 a.m. 28.5 ppb (26) 10.7 ppb (10) N/A 18.0 ppb (17) N/A 0.0 ppb (0) 2.0 ppb (2) N/A N/A 9.0 μg/m3 (38) 38.0
 
Sept. 13, 2019, 1 a.m. 23.8 ppb (22) 7.4 ppb (7) N/A 16.0 ppb (15) N/A 0.0 ppb (0) 4.0 ppb (3) N/A N/A 9.0 μg/m3 (38) 38.0
 
Sept. 13, 2019, midnight 15.6 ppb (14) 2.2 ppb (2) N/A 13.0 ppb (12) N/A 0.0 ppb (0) 9.0 ppb (7) N/A N/A 10.0 μg/m3 (42) 42.0
 
Sept. 12, 2019, 11 p.m. 8.0 ppb (7) 1.0 ppb (1) N/A 7.0 ppb (6) N/A 0.0 ppb (0) 17.0 ppb (13) N/A N/A 8.0 μg/m3 (33) 33.0
 
Sept. 12, 2019, 10 p.m. 6.7 ppb (6) 2.5 ppb (2) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 21.0 ppb (16) N/A N/A 9.0 μg/m3 (38) 38.0
 
Sept. 12, 2019, 9 p.m. 8.6 ppb (8) 3.9 ppb (4) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 23.0 ppb (18) N/A N/A 7.0 μg/m3 (29) 29.0
 
Sept. 12, 2019, 8 p.m. 6.8 ppb (6) 3.4 ppb (3) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 26.0 ppb (20) N/A N/A 7.0 μg/m3 (29) 29.0
 
Sept. 12, 2019, 7 p.m. 6.3 ppb (6) 2.9 ppb (3) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 25.0 ppb (19) N/A N/A 9.0 μg/m3 (38) 38.0
 
Sept. 12, 2019, 6 p.m. 5.8 ppb (5) 2.7 ppb (3) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 23.0 ppb (18) N/A N/A 6.0 μg/m3 (25) 25.0
 
Sept. 12, 2019, 5 p.m. 6.1 ppb (6) 2.8 ppb (3) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 21.0 ppb (16) N/A N/A 6.0 μg/m3 (25) 25.0
 
Sept. 12, 2019, 4 p.m. 6.0 ppb (6) 3.2 ppb (3) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 20.0 ppb (15) N/A N/A 5.0 μg/m3 (21) 21.0
 
Sept. 12, 2019, 3 p.m. 8.1 ppb (8) 3.6 ppb (3) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 19.0 ppb (15) N/A N/A 4.0 μg/m3 (17) 17.0
 
Sept. 12, 2019, 2 p.m. 7.5 ppb (7) 3.0 ppb (3) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 19.0 ppb (15) N/A N/A 7.0 μg/m3 (29) 29.0
 
Sept. 12, 2019, 1 p.m. 7.2 ppb (7) 2.8 ppb (3) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 20.0 ppb (15) N/A N/A 7.0 μg/m3 (29) 29.0
 
Sept. 12, 2019, noon 6.8 ppb (6) 2.7 ppb (3) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 22.0 ppb (17) N/A N/A 7.0 μg/m3 (29) 29.0
 
Sept. 12, 2019, 11 a.m. 6.1 ppb (6) 2.2 ppb (2) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 21.0 ppb (16) N/A N/A 9.0 μg/m3 (38) 38.0
 
Sept. 12, 2019, 10 a.m. 4.6 ppb (4) 1.5 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 18.0 ppb (14) N/A N/A 9.0 μg/m3 (38) 38.0
 
Sept. 12, 2019, 9 a.m. 3.0 ppb (3) 0.9 ppb (1) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 14.0 ppb (11) N/A N/A 13.0 μg/m3 (52) 52.0
 
Sept. 12, 2019, 8 a.m. 3.2 ppb (3) 0.7 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 15.0 ppb (12) N/A N/A 11.0 μg/m3 (46) 46.0
 
Sept. 12, 2019, 7 a.m. 3.5 ppb (3) 0.4 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 15.0 ppb (12) N/A N/A 12.0 μg/m3 (50) 50.0
 
Sept. 12, 2019, 6 a.m. 4.5 ppb (4) 0.5 ppb (0) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 15.0 ppb (12) N/A N/A 12.0 μg/m3 (50) 50.0
 
Sept. 12, 2019, 5 a.m. 4.1 ppb (4) 0.3 ppb (0) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 18.0 ppb (14) N/A N/A 8.0 μg/m3 (33) 33.0