AQSQID: 110010044

Site Name: Mcmillan Ncore

Location: Washington (McMillan Dr Nwest), DC

Reporting: True, Located: True

Current AQI: 50.0

Washington (McMillan Dr Nwest) DC, US: 38.921848, -77.013176

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
Sept. 22, 2019, 7 p.m. N/A N/A N/A 3.0 ppb (3) N/A 1.0 ppb (1) 65.0 ppb (50) N/A 19.0 μg/m3 (17) N/A 50.0
 
Sept. 22, 2019, 6 p.m. N/A N/A N/A 3.0 ppb (3) N/A 1.0 ppb (1) 72.0 ppb (56) N/A 40.0 μg/m3 (36) N/A 56.0
 
Sept. 22, 2019, 5 p.m. N/A N/A N/A 3.0 ppb (3) N/A 1.0 ppb (1) 69.0 ppb (53) N/A 20.0 μg/m3 (18) N/A 53.0
 
Sept. 22, 2019, 4 p.m. N/A N/A N/A 6.0 ppb (6) N/A 1.0 ppb (1) 73.0 ppb (57) N/A 24.0 μg/m3 (22) N/A 57.0
 
Sept. 22, 2019, 3 p.m. N/A N/A N/A 9.0 ppb (8) N/A 1.0 ppb (1) 61.0 ppb (47) N/A 25.0 μg/m3 (23) N/A 47.0
 
Sept. 22, 2019, 2 p.m. N/A N/A N/A 13.0 ppb (12) N/A 1.0 ppb (1) 45.0 ppb (35) N/A 27.0 μg/m3 (25) N/A 35.0
 
Sept. 22, 2019, 1 p.m. N/A N/A N/A 16.0 ppb (15) N/A 1.0 ppb (1) 30.0 ppb (23) N/A 25.0 μg/m3 (23) N/A 23.0
 
Sept. 22, 2019, noon N/A N/A N/A 16.0 ppb (15) N/A 1.0 ppb (1) 18.0 ppb (14) N/A 21.0 μg/m3 (19) N/A 19.0
 
Sept. 22, 2019, 11 a.m. N/A N/A N/A 17.0 ppb (16) N/A 1.0 ppb (1) 10.0 ppb (8) N/A 26.0 μg/m3 (24) N/A 24.0
 
Sept. 22, 2019, 10 a.m. N/A N/A N/A 15.0 ppb (14) N/A 1.0 ppb (1) 17.0 ppb (13) N/A 21.0 μg/m3 (19) N/A 19.0
 
Sept. 22, 2019, 9 a.m. N/A N/A N/A 8.0 ppb (7) N/A 1.0 ppb (1) 33.0 ppb (25) N/A 22.0 μg/m3 (20) N/A 25.0
 
Sept. 22, 2019, 8 a.m. N/A N/A N/A 8.0 ppb (7) N/A 1.0 ppb (1) 36.0 ppb (28) N/A 20.0 μg/m3 (18) N/A 28.0
 
Sept. 22, 2019, 7 a.m. N/A N/A N/A 9.0 ppb (8) N/A 1.0 ppb (1) 38.0 ppb (29) N/A 22.0 μg/m3 (20) N/A 29.0
 
Sept. 22, 2019, 6 a.m. N/A N/A N/A 6.0 ppb (6) N/A 1.0 ppb (1) 43.0 ppb (33) N/A 20.0 μg/m3 (18) N/A 33.0
 
Sept. 22, 2019, 5 a.m. N/A N/A N/A 7.0 ppb (6) N/A 2.0 ppb (3) 44.0 ppb (34) N/A 21.0 μg/m3 (19) N/A 34.0
 
Sept. 22, 2019, 4 a.m. N/A N/A N/A 8.0 ppb (7) N/A 2.0 ppb (3) 44.0 ppb (34) N/A 26.0 μg/m3 (24) N/A 34.0
 
Sept. 22, 2019, 3 a.m. N/A N/A N/A 10.0 ppb (9) N/A 2.0 ppb (3) 44.0 ppb (34) N/A 19.0 μg/m3 (17) N/A 34.0
 
Sept. 22, 2019, 2 a.m. N/A N/A N/A 8.0 ppb (7) N/A 2.0 ppb (3) 45.0 ppb (35) N/A 26.0 μg/m3 (24) N/A 35.0
 
Sept. 22, 2019, 1 a.m. N/A N/A N/A 9.0 ppb (8) N/A 2.0 ppb (3) 46.0 ppb (35) N/A 26.0 μg/m3 (24) N/A 35.0
 
Sept. 22, 2019, midnight N/A N/A N/A 7.0 ppb (6) N/A 2.0 ppb (3) 51.0 ppb (39) N/A 35.0 μg/m3 (32) N/A 39.0
 
Sept. 21, 2019, 11 p.m. N/A N/A N/A 6.0 ppb (6) N/A 2.0 ppb (3) 55.0 ppb (42) N/A 45.0 μg/m3 (41) N/A 42.0
 
Sept. 21, 2019, 10 p.m. N/A N/A N/A 6.0 ppb (6) N/A 2.0 ppb (3) 67.0 ppb (52) N/A 40.0 μg/m3 (36) N/A 52.0
 
Sept. 21, 2019, 9 p.m. N/A N/A N/A 6.0 ppb (6) N/A 2.0 ppb (3) 78.0 ppb (61) N/A 26.0 μg/m3 (24) N/A 61.0
 
Sept. 21, 2019, 8 p.m. N/A N/A N/A 5.0 ppb (5) N/A 2.0 ppb (3) 80.0 ppb (62) N/A 28.0 μg/m3 (25) N/A 62.0
 
Sept. 21, 2019, 7 p.m. N/A N/A N/A 5.0 ppb (5) N/A 2.0 ppb (3) 82.0 ppb (64) N/A 29.0 μg/m3 (26) N/A 64.0
 
Sept. 21, 2019, 6 p.m. N/A N/A N/A 7.0 ppb (6) N/A 2.0 ppb (3) 80.0 ppb (62) N/A 26.0 μg/m3 (24) N/A 62.0
 
Sept. 21, 2019, 5 p.m. N/A N/A N/A 8.0 ppb (7) N/A 2.0 ppb (3) 67.0 ppb (52) N/A 27.0 μg/m3 (25) N/A 52.0
 
Sept. 21, 2019, 4 p.m. N/A N/A N/A 12.0 ppb (11) N/A 2.0 ppb (3) 51.0 ppb (39) N/A 29.0 μg/m3 (26) N/A 39.0
 
Sept. 21, 2019, 3 p.m. N/A N/A N/A 16.0 ppb (15) N/A 2.0 ppb (3) 38.0 ppb (29) N/A 29.0 μg/m3 (26) N/A 29.0
 
Sept. 21, 2019, 2 p.m. N/A N/A N/A 17.0 ppb (16) N/A 2.0 ppb (3) 27.0 ppb (21) N/A 27.0 μg/m3 (25) N/A 25.0
 
Sept. 21, 2019, 1 p.m. N/A N/A N/A 23.0 ppb (21) N/A 2.0 ppb (3) 16.0 ppb (12) N/A 39.0 μg/m3 (35) N/A 35.0
 
Sept. 21, 2019, noon N/A N/A N/A 24.0 ppb (22) N/A 2.0 ppb (3) 9.0 ppb (7) N/A 34.0 μg/m3 (31) N/A 31.0
 
Sept. 21, 2019, 11 a.m. N/A N/A N/A 24.0 ppb (22) N/A 2.0 ppb (3) 4.0 ppb (3) N/A 27.0 μg/m3 (25) N/A 25.0
 
Sept. 21, 2019, 10 a.m. N/A N/A N/A 22.0 ppb (20) N/A 1.0 ppb (1) 8.0 ppb (6) N/A 27.0 μg/m3 (25) N/A 25.0
 
Sept. 21, 2019, 9 a.m. N/A N/A N/A 9.0 ppb (8) N/A 1.0 ppb (1) 25.0 ppb (19) N/A 20.0 μg/m3 (18) N/A 19.0
 
Sept. 21, 2019, 8 a.m. N/A N/A N/A 9.0 ppb (8) N/A 2.0 ppb (3) 27.0 ppb (21) N/A 19.0 μg/m3 (17) N/A 21.0
 
Sept. 21, 2019, 7 a.m. N/A N/A N/A 11.0 ppb (10) N/A 2.0 ppb (3) 26.0 ppb (20) N/A 23.0 μg/m3 (21) N/A 21.0
 
Sept. 21, 2019, 6 a.m. N/A N/A N/A 13.0 ppb (12) N/A 2.0 ppb (3) 27.0 ppb (21) N/A 19.0 μg/m3 (17) N/A 21.0
 
Sept. 21, 2019, 5 a.m. N/A N/A N/A 11.0 ppb (10) N/A 1.0 ppb (1) 32.0 ppb (25) N/A 24.0 μg/m3 (22) N/A 25.0
 
Sept. 21, 2019, 4 a.m. N/A N/A N/A 10.0 ppb (9) N/A 1.0 ppb (1) 37.0 ppb (28) N/A 26.0 μg/m3 (24) N/A 28.0
 
Sept. 21, 2019, 3 a.m. N/A N/A N/A 12.0 ppb (11) N/A 1.0 ppb (1) 34.0 ppb (26) N/A 27.0 μg/m3 (25) N/A 26.0
 
Sept. 21, 2019, 2 a.m. N/A N/A N/A 12.0 ppb (11) N/A 2.0 ppb (3) 33.0 ppb (25) N/A 24.0 μg/m3 (22) N/A 25.0
 
Sept. 21, 2019, 1 a.m. N/A N/A N/A 12.0 ppb (11) N/A 1.0 ppb (1) 35.0 ppb (27) N/A 23.0 μg/m3 (21) N/A 27.0
 
Sept. 21, 2019, midnight N/A N/A N/A 12.0 ppb (11) N/A 1.0 ppb (1) 36.0 ppb (28) N/A 25.0 μg/m3 (23) N/A 28.0
 
Sept. 20, 2019, 11 p.m. N/A N/A N/A 9.0 ppb (8) N/A 1.0 ppb (1) 44.0 ppb (34) N/A 23.0 μg/m3 (21) N/A 34.0
 
Sept. 20, 2019, 10 p.m. N/A N/A N/A 7.0 ppb (6) N/A 1.0 ppb (1) 51.0 ppb (39) N/A 26.0 μg/m3 (24) N/A 39.0
 
Sept. 20, 2019, 9 p.m. N/A N/A N/A 6.0 ppb (6) N/A 1.0 ppb (1) 58.0 ppb (45) N/A 22.0 μg/m3 (20) N/A 45.0
 
Sept. 20, 2019, 8 p.m. N/A N/A N/A 6.0 ppb (6) N/A 1.0 ppb (1) 60.0 ppb (46) N/A 20.0 μg/m3 (18) N/A 46.0
 
Sept. 20, 2019, 7 p.m. N/A N/A N/A 5.0 ppb (5) N/A 1.0 ppb (1) 57.0 ppb (44) N/A 19.0 μg/m3 (17) N/A 44.0
 
Sept. 20, 2019, 6 p.m. N/A N/A N/A 4.0 ppb (4) N/A 1.0 ppb (1) 52.0 ppb (40) N/A 19.0 μg/m3 (17) N/A 40.0
 
Sept. 20, 2019, 5 p.m. N/A N/A N/A 5.0 ppb (5) N/A 1.0 ppb (1) 51.0 ppb (39) N/A 23.0 μg/m3 (21) N/A 39.0
 
Sept. 20, 2019, 4 p.m. N/A N/A N/A 7.0 ppb (6) N/A 1.0 ppb (1) 44.0 ppb (34) N/A 25.0 μg/m3 (23) N/A 34.0
 
Sept. 20, 2019, 3 p.m. N/A N/A N/A 10.0 ppb (9) N/A 1.0 ppb (1) 34.0 ppb (26) N/A 31.0 μg/m3 (28) N/A 28.0
 
Sept. 20, 2019, 2 p.m. N/A N/A N/A 12.0 ppb (11) N/A 1.0 ppb (1) 30.0 ppb (23) N/A 27.0 μg/m3 (25) N/A 25.0
 
Sept. 20, 2019, 1 p.m. N/A N/A N/A 12.0 ppb (11) N/A 1.0 ppb (1) 26.0 ppb (20) N/A 31.0 μg/m3 (28) N/A 28.0
 
Sept. 20, 2019, noon N/A N/A N/A 15.0 ppb (14) N/A 1.0 ppb (1) 20.0 ppb (15) N/A 34.0 μg/m3 (31) N/A 31.0
 
Sept. 20, 2019, 11 a.m. N/A N/A N/A 26.0 ppb (24) N/A 2.0 ppb (3) 10.0 ppb (8) N/A 30.0 μg/m3 (27) N/A 27.0
 
Sept. 20, 2019, 10 a.m. N/A N/A N/A 29.0 ppb (27) N/A 1.0 ppb (1) 4.0 ppb (3) N/A 32.0 μg/m3 (29) N/A 29.0
 
Sept. 20, 2019, 9 a.m. N/A N/A N/A 13.0 ppb (12) N/A 1.0 ppb (1) 19.0 ppb (15) N/A 18.0 μg/m3 (16) N/A 16.0
 
Sept. 20, 2019, 8 a.m. N/A N/A N/A 10.0 ppb (9) N/A 1.0 ppb (1) 25.0 ppb (19) N/A 19.0 μg/m3 (17) N/A 19.0
 
Sept. 20, 2019, 7 a.m. N/A N/A N/A 19.0 ppb (18) N/A 1.0 ppb (1) 14.0 ppb (11) N/A 18.0 μg/m3 (16) N/A 18.0
 
Sept. 20, 2019, 6 a.m. N/A N/A N/A 32.0 ppb (30) N/A 1.0 ppb (1) 2.0 ppb (2) N/A 26.0 μg/m3 (24) N/A 30.0
 
Sept. 20, 2019, 5 a.m. N/A N/A N/A 23.0 ppb (21) N/A 1.0 ppb (1) 12.0 ppb (9) N/A 25.0 μg/m3 (23) N/A 23.0
 
Sept. 20, 2019, 4 a.m. N/A N/A N/A 23.0 ppb (21) N/A 1.0 ppb (1) 15.0 ppb (12) N/A 22.0 μg/m3 (20) N/A 21.0
 
Sept. 20, 2019, 3 a.m. N/A N/A N/A 21.0 ppb (19) N/A 1.0 ppb (1) 18.0 ppb (14) N/A 29.0 μg/m3 (26) N/A 26.0
 
Sept. 20, 2019, 2 a.m. N/A N/A N/A 16.0 ppb (15) N/A 2.0 ppb (3) 24.0 ppb (18) N/A 22.0 μg/m3 (20) N/A 20.0
 
Sept. 20, 2019, 1 a.m. N/A N/A N/A 14.0 ppb (13) N/A 1.0 ppb (1) 28.0 ppb (22) N/A 33.0 μg/m3 (30) N/A 30.0
 
Sept. 20, 2019, midnight N/A N/A N/A 12.0 ppb (11) N/A 1.0 ppb (1) 32.0 ppb (25) N/A 23.0 μg/m3 (21) N/A 25.0
 
Sept. 19, 2019, 11 p.m. N/A N/A N/A 11.0 ppb (10) N/A 1.0 ppb (1) 36.0 ppb (28) N/A 17.0 μg/m3 (15) N/A 28.0
 
Sept. 19, 2019, 10 p.m. N/A N/A N/A 6.0 ppb (6) N/A 1.0 ppb (1) 44.0 ppb (34) N/A 12.0 μg/m3 (11) N/A 34.0
 
Sept. 19, 2019, 9 p.m. N/A N/A N/A 4.0 ppb (4) N/A 1.0 ppb (1) 52.0 ppb (40) N/A 14.0 μg/m3 (13) N/A 40.0
 
Sept. 19, 2019, 8 p.m. N/A N/A N/A 4.0 ppb (4) N/A 1.0 ppb (1) 53.0 ppb (41) N/A 16.0 μg/m3 (15) N/A 41.0
 
Sept. 19, 2019, 7 p.m. N/A N/A N/A 3.0 ppb (3) N/A 1.0 ppb (1) 54.0 ppb (42) N/A 16.0 μg/m3 (15) N/A 42.0
 
Sept. 19, 2019, 6 p.m. N/A N/A N/A 3.0 ppb (3) N/A 1.0 ppb (1) 51.0 ppb (39) N/A 16.0 μg/m3 (15) N/A 39.0
 
Sept. 19, 2019, 5 p.m. N/A N/A N/A 3.0 ppb (3) N/A 1.0 ppb (1) 48.0 ppb (37) N/A 17.0 μg/m3 (15) N/A 37.0
 
Sept. 19, 2019, 4 p.m. N/A N/A N/A 3.0 ppb (3) N/A 1.0 ppb (1) 44.0 ppb (34) N/A 15.0 μg/m3 (14) N/A 34.0
 
Sept. 19, 2019, 3 p.m. N/A N/A N/A 3.0 ppb (3) N/A 1.0 ppb (1) 40.0 ppb (31) N/A 17.0 μg/m3 (15) N/A 31.0
 
Sept. 19, 2019, 2 p.m. N/A N/A N/A 3.0 ppb (3) N/A N/A 36.0 ppb (28) N/A 20.0 μg/m3 (18) N/A 28.0
 
Sept. 19, 2019, 1 p.m. N/A N/A N/A 6.0 ppb (6) N/A 1.0 ppb (1) 32.0 ppb (25) N/A 21.0 μg/m3 (19) N/A 25.0
 
Sept. 19, 2019, noon N/A N/A N/A 11.0 ppb (10) N/A 1.0 ppb (1) 24.0 ppb (18) N/A 22.0 μg/m3 (20) N/A 20.0
 
Sept. 19, 2019, 11 a.m. N/A N/A N/A 14.0 ppb (13) N/A 1.0 ppb (1) 19.0 ppb (15) N/A 25.0 μg/m3 (23) N/A 23.0
 
Sept. 19, 2019, 10 a.m. N/A N/A N/A 11.0 ppb (10) N/A 1.0 ppb (1) 21.0 ppb (16) N/A N/A N/A 16.0
 
Sept. 19, 2019, 9 a.m. N/A N/A N/A 7.0 ppb (6) N/A 1.0 ppb (1) 23.0 ppb (18) N/A N/A N/A 18.0
 
Sept. 19, 2019, 8 a.m. N/A N/A N/A 4.0 ppb (4) N/A 1.0 ppb (1) 26.0 ppb (20) N/A N/A N/A 20.0
 
Sept. 19, 2019, 7 a.m. N/A N/A N/A 5.0 ppb (5) N/A 1.0 ppb (1) 26.0 ppb (20) N/A N/A N/A 20.0
 
Sept. 19, 2019, 6 a.m. N/A N/A N/A 6.0 ppb (6) N/A 1.0 ppb (1) 25.0 ppb (19) N/A 17.0 μg/m3 (15) N/A 19.0
 
Sept. 19, 2019, 5 a.m. N/A N/A N/A 5.0 ppb (5) N/A 1.0 ppb (1) 28.0 ppb (22) N/A 15.0 μg/m3 (14) N/A 22.0
 
Sept. 19, 2019, 4 a.m. N/A N/A N/A 5.0 ppb (5) N/A 1.0 ppb (1) 29.0 ppb (22) N/A 18.0 μg/m3 (16) N/A 22.0
 
Sept. 19, 2019, 3 a.m. N/A N/A N/A 6.0 ppb (6) N/A 1.0 ppb (1) 29.0 ppb (22) N/A 20.0 μg/m3 (18) N/A 22.0
 
Sept. 19, 2019, 2 a.m. N/A N/A N/A 7.0 ppb (6) N/A 1.0 ppb (1) 31.0 ppb (24) N/A 32.0 μg/m3 (29) N/A 29.0
 
Sept. 19, 2019, 1 a.m. N/A N/A N/A 11.0 ppb (10) N/A 1.0 ppb (1) 38.0 ppb (29) N/A 22.0 μg/m3 (20) N/A 29.0
 
Sept. 19, 2019, midnight N/A N/A N/A 11.0 ppb (10) N/A 1.0 ppb (1) 41.0 ppb (32) N/A 18.0 μg/m3 (16) N/A 32.0
 
Sept. 18, 2019, 11 p.m. N/A N/A N/A 6.0 ppb (6) N/A 1.0 ppb (1) 48.0 ppb (37) N/A 22.0 μg/m3 (20) N/A 37.0
 
Sept. 18, 2019, 10 p.m. N/A N/A N/A 5.0 ppb (5) N/A 1.0 ppb (1) 56.0 ppb (43) N/A 20.0 μg/m3 (18) N/A 43.0
 
Sept. 18, 2019, 9 p.m. N/A N/A N/A 5.0 ppb (5) N/A 1.0 ppb (1) 59.0 ppb (45) N/A 17.0 μg/m3 (15) N/A 45.0
 
Sept. 18, 2019, 8 p.m. N/A N/A N/A 4.0 ppb (4) N/A 1.0 ppb (1) 59.0 ppb (45) N/A 21.0 μg/m3 (19) N/A 45.0
 
Sept. 18, 2019, 7 p.m. N/A N/A N/A 3.0 ppb (3) N/A 1.0 ppb (1) 56.0 ppb (43) N/A 18.0 μg/m3 (16) N/A 43.0
 
Sept. 18, 2019, 6 p.m. N/A N/A N/A 3.0 ppb (3) N/A 1.0 ppb (1) 52.0 ppb (40) N/A 24.0 μg/m3 (22) N/A 40.0
 
Sept. 18, 2019, 5 p.m. N/A N/A N/A 3.0 ppb (3) N/A 2.0 ppb (3) 49.0 ppb (38) N/A 26.0 μg/m3 (24) N/A 38.0
 
Sept. 18, 2019, 4 p.m. N/A N/A N/A 4.0 ppb (4) N/A 1.0 ppb (1) 47.0 ppb (36) N/A 18.0 μg/m3 (16) N/A 36.0
 
Sept. 18, 2019, 3 p.m. N/A N/A N/A 6.0 ppb (6) N/A 1.0 ppb (1) 45.0 ppb (35) N/A 22.0 μg/m3 (20) N/A 35.0
 
Sept. 18, 2019, 2 p.m. N/A N/A N/A 7.0 ppb (6) N/A 0.0 ppb (0) 41.0 ppb (32) N/A 19.0 μg/m3 (17) N/A 32.0
 
Sept. 18, 2019, 1 p.m. N/A N/A N/A 13.0 ppb (12) N/A 0.0 ppb (0) N/A N/A 25.0 μg/m3 (23) N/A 23.0
 
Sept. 18, 2019, noon N/A N/A N/A 19.0 ppb (18) N/A 1.0 ppb (1) 14.0 ppb (11) N/A 20.0 μg/m3 (18) N/A 18.0
 
Sept. 18, 2019, 11 a.m. N/A N/A N/A 24.0 ppb (22) N/A 1.0 ppb (1) 8.0 ppb (6) N/A 18.0 μg/m3 (16) N/A 22.0
 
Sept. 18, 2019, 10 a.m. N/A N/A N/A 26.0 ppb (24) N/A 1.0 ppb (1) 4.0 ppb (3) N/A 38.0 μg/m3 (35) N/A 35.0
 
Sept. 18, 2019, 9 a.m. N/A N/A N/A 22.0 ppb (20) N/A 1.0 ppb (1) 7.0 ppb (5) N/A 20.0 μg/m3 (18) N/A 20.0
 
Sept. 18, 2019, 8 a.m. N/A N/A N/A 20.0 ppb (19) N/A 1.0 ppb (1) 9.0 ppb (7) N/A 18.0 μg/m3 (16) N/A 19.0
 
Sept. 18, 2019, 7 a.m. N/A N/A N/A 22.0 ppb (20) N/A 0.0 ppb (0) 11.0 ppb (8) N/A 19.0 μg/m3 (17) N/A 20.0
 
Sept. 18, 2019, 6 a.m. N/A N/A N/A 15.0 ppb (14) N/A 0.0 ppb (0) 19.0 ppb (15) N/A 23.0 μg/m3 (21) N/A 21.0
 
Sept. 18, 2019, 5 a.m. N/A N/A N/A 13.0 ppb (12) N/A 1.0 ppb (1) 23.0 ppb (18) N/A 21.0 μg/m3 (19) N/A 19.0
 
Sept. 18, 2019, 4 a.m. N/A N/A N/A 15.0 ppb (14) N/A 1.0 ppb (1) 24.0 ppb (18) N/A 22.0 μg/m3 (20) N/A 20.0
 
Sept. 18, 2019, 3 a.m. N/A N/A N/A 15.0 ppb (14) N/A 2.0 ppb (3) 29.0 ppb (22) N/A 26.0 μg/m3 (24) N/A 24.0
 
Sept. 18, 2019, 2 a.m. N/A N/A N/A 16.0 ppb (15) N/A 2.0 ppb (3) 39.0 ppb (30) N/A 27.0 μg/m3 (25) N/A 30.0
 
Sept. 18, 2019, 1 a.m. N/A N/A N/A 19.0 ppb (18) N/A 1.0 ppb (1) 40.0 ppb (31) N/A 28.0 μg/m3 (25) N/A 31.0
 
Sept. 18, 2019, midnight N/A N/A N/A 15.0 ppb (14) N/A 1.0 ppb (1) 48.0 ppb (37) N/A 28.0 μg/m3 (25) N/A 37.0
 
Sept. 17, 2019, 11 p.m. N/A N/A N/A 8.0 ppb (7) N/A 2.0 ppb (3) 56.0 ppb (43) N/A 22.0 μg/m3 (20) N/A 43.0
 
Sept. 17, 2019, 10 p.m. N/A N/A N/A 6.0 ppb (6) N/A 2.0 ppb (3) 55.0 ppb (42) N/A 23.0 μg/m3 (21) N/A 42.0
 
Sept. 17, 2019, 9 p.m. N/A N/A N/A 5.0 ppb (5) N/A 2.0 ppb (3) 58.0 ppb (45) N/A 22.0 μg/m3 (20) N/A 45.0
 
Sept. 17, 2019, 8 p.m. N/A N/A N/A 4.0 ppb (4) N/A 2.0 ppb (3) 56.0 ppb (43) N/A 20.0 μg/m3 (18) N/A 43.0
 
Sept. 17, 2019, 7 p.m. N/A N/A N/A 3.0 ppb (3) N/A 1.0 ppb (1) 50.0 ppb (38) N/A 21.0 μg/m3 (19) N/A 38.0
 
Sept. 17, 2019, 6 p.m. N/A N/A N/A 3.0 ppb (3) N/A 1.0 ppb (1) 46.0 ppb (35) N/A 19.0 μg/m3 (17) N/A 35.0
 
Sept. 17, 2019, 5 p.m. N/A N/A N/A 3.0 ppb (3) N/A 1.0 ppb (1) 45.0 ppb (35) N/A 20.0 μg/m3 (18) N/A 35.0
 
Sept. 17, 2019, 4 p.m. N/A N/A N/A 3.0 ppb (3) N/A 2.0 ppb (3) 42.0 ppb (32) N/A 2.0 μg/m3 (2) N/A 32.0
 
Sept. 17, 2019, 3 p.m. N/A N/A N/A 4.0 ppb (4) N/A 1.0 ppb (1) 38.0 ppb (29) N/A N/A N/A 29.0
 
Sept. 17, 2019, 2 p.m. N/A N/A N/A 5.0 ppb (5) N/A 2.0 ppb (3) 36.0 ppb (28) N/A 19.0 μg/m3 (17) N/A 28.0
 
Sept. 17, 2019, 1 p.m. N/A N/A N/A 8.0 ppb (7) N/A 2.0 ppb (3) N/A N/A 27.0 μg/m3 (25) N/A 25.0
 
Sept. 17, 2019, noon N/A N/A N/A 12.0 ppb (11) N/A 2.0 ppb (3) 31.0 ppb (24) N/A 23.0 μg/m3 (21) N/A 24.0
 
Sept. 17, 2019, 11 a.m. N/A N/A N/A 12.0 ppb (11) N/A 2.0 ppb (3) 28.0 ppb (22) N/A 29.0 μg/m3 (26) N/A 26.0
 
Sept. 17, 2019, 10 a.m. N/A N/A N/A 10.0 ppb (9) N/A 2.0 ppb (3) 28.0 ppb (22) N/A 22.0 μg/m3 (20) N/A 22.0
 
Sept. 17, 2019, 9 a.m. N/A N/A N/A 8.0 ppb (7) N/A 2.0 ppb (3) 35.0 ppb (27) N/A 22.0 μg/m3 (20) N/A 27.0
 
Sept. 17, 2019, 8 a.m. N/A N/A N/A 10.0 ppb (9) N/A 2.0 ppb (3) 33.0 ppb (25) N/A 22.0 μg/m3 (20) N/A 25.0
 
Sept. 17, 2019, 7 a.m. N/A N/A N/A 11.0 ppb (10) N/A 1.0 ppb (1) 35.0 ppb (27) N/A 21.0 μg/m3 (19) N/A 27.0
 
Sept. 17, 2019, 6 a.m. N/A N/A N/A 11.0 ppb (10) N/A 2.0 ppb (3) 36.0 ppb (28) N/A 20.0 μg/m3 (18) N/A 28.0
 
Sept. 17, 2019, 5 a.m. N/A N/A N/A 11.0 ppb (10) N/A 3.0 ppb (4) 40.0 ppb (31) N/A 25.0 μg/m3 (23) N/A 31.0
 
Sept. 17, 2019, 4 a.m. N/A N/A N/A 10.0 ppb (9) N/A 3.0 ppb (4) 49.0 ppb (38) N/A 24.0 μg/m3 (22) N/A 38.0
 
Sept. 17, 2019, 3 a.m. N/A N/A N/A 10.0 ppb (9) N/A 2.0 ppb (3) 54.0 ppb (42) N/A 40.0 μg/m3 (36) N/A 42.0
 
Sept. 17, 2019, 2 a.m. N/A N/A N/A 11.0 ppb (10) N/A 2.0 ppb (3) 44.0 ppb (34) N/A 20.0 μg/m3 (18) N/A 34.0
 
Sept. 17, 2019, 1 a.m. N/A N/A N/A 8.0 ppb (7) N/A 2.0 ppb (3) 52.0 ppb (40) N/A 10.0 μg/m3 (9) N/A 40.0
 
Sept. 17, 2019, midnight N/A N/A N/A 7.0 ppb (6) N/A 2.0 ppb (3) 56.0 ppb (43) N/A 8.0 μg/m3 (7) N/A 43.0
 
Sept. 16, 2019, 11 p.m. N/A N/A N/A 7.0 ppb (6) N/A 2.0 ppb (3) 56.0 ppb (43) N/A 48.0 μg/m3 (44) N/A 44.0
 
Sept. 16, 2019, 10 p.m. N/A N/A N/A 5.0 ppb (5) N/A 2.0 ppb (3) 60.0 ppb (46) N/A 29.0 μg/m3 (26) N/A 46.0
 
Sept. 16, 2019, 9 p.m. N/A N/A N/A 3.0 ppb (3) N/A 2.0 ppb (3) 60.0 ppb (46) N/A 22.0 μg/m3 (20) N/A 46.0
 
Sept. 16, 2019, 8 p.m. N/A N/A N/A 2.0 ppb (2) N/A 2.0 ppb (3) 60.0 ppb (46) N/A 11.0 μg/m3 (10) N/A 46.0
 
Sept. 16, 2019, 7 p.m. N/A N/A N/A 3.0 ppb (3) N/A 2.0 ppb (3) 62.0 ppb (48) N/A 9.0 μg/m3 (8) N/A 48.0
 
Sept. 16, 2019, 6 p.m. N/A N/A N/A 5.0 ppb (5) N/A 2.0 ppb (3) 69.0 ppb (53) N/A 28.0 μg/m3 (25) N/A 53.0
 
Sept. 16, 2019, 5 p.m. N/A N/A N/A 4.0 ppb (4) N/A 2.0 ppb (3) 68.0 ppb (52) N/A 10.0 μg/m3 (9) N/A 52.0
 
Sept. 16, 2019, 4 p.m. N/A N/A N/A 5.0 ppb (5) N/A 2.0 ppb (3) 63.0 ppb (48) N/A 8.0 μg/m3 (7) N/A 48.0
 
Sept. 16, 2019, 3 p.m. N/A N/A N/A 9.0 ppb (8) N/A 2.0 ppb (3) 53.0 ppb (41) N/A 18.0 μg/m3 (16) N/A 41.0
 
Sept. 16, 2019, 2 p.m. N/A N/A N/A 11.0 ppb (10) N/A 2.0 ppb (3) 45.0 ppb (35) N/A 22.0 μg/m3 (20) N/A 35.0
 
Sept. 16, 2019, 1 p.m. N/A N/A N/A 16.0 ppb (15) N/A 2.0 ppb (3) 37.0 ppb (28) N/A 22.0 μg/m3 (20) N/A 28.0
 
Sept. 16, 2019, noon N/A N/A N/A 35.0 ppb (32) N/A 2.0 ppb (3) 10.0 ppb (8) N/A 51.0 μg/m3 (46) N/A 46.0
 
Sept. 16, 2019, 11 a.m. N/A N/A N/A 35.0 ppb (32) N/A 3.0 ppb (4) 3.0 ppb (2) N/A 62.0 μg/m3 (54) N/A 54.0
 
Sept. 16, 2019, 10 a.m. N/A N/A N/A 31.0 ppb (29) N/A 2.0 ppb (3) 5.0 ppb (4) N/A 26.0 μg/m3 (24) N/A 29.0
 
Sept. 16, 2019, 9 a.m. N/A N/A N/A 27.0 ppb (25) N/A 2.0 ppb (3) 7.0 ppb (5) N/A 29.0 μg/m3 (26) N/A 26.0
 
Sept. 16, 2019, 8 a.m. N/A N/A N/A 34.0 ppb (31) N/A 2.0 ppb (3) 2.0 ppb (2) N/A 13.0 μg/m3 (12) N/A 31.0
 
Sept. 16, 2019, 7 a.m. N/A N/A N/A 36.0 ppb (33) N/A 2.0 ppb (3) 3.0 ppb (2) N/A 27.0 μg/m3 (25) N/A 33.0
 
Sept. 16, 2019, 6 a.m. N/A N/A N/A 34.0 ppb (31) N/A 2.0 ppb (3) 5.0 ppb (4) N/A 18.0 μg/m3 (16) N/A 31.0
 
Sept. 16, 2019, 5 a.m. N/A N/A N/A 34.0 ppb (31) N/A 1.0 ppb (1) 8.0 ppb (6) N/A 35.0 μg/m3 (32) N/A 32.0
 
Sept. 16, 2019, 4 a.m. N/A N/A N/A 27.0 ppb (25) N/A 1.0 ppb (1) 15.0 ppb (12) N/A 10.0 μg/m3 (9) N/A 25.0
 
Sept. 16, 2019, 3 a.m. N/A N/A N/A 26.0 ppb (24) N/A 1.0 ppb (1) 21.0 ppb (16) N/A 36.0 μg/m3 (33) N/A 33.0
 
Sept. 16, 2019, 2 a.m. N/A N/A N/A 26.0 ppb (24) N/A 1.0 ppb (1) 26.0 ppb (20) N/A 31.0 μg/m3 (28) N/A 28.0
 
Sept. 16, 2019, 1 a.m. N/A N/A N/A 15.0 ppb (14) N/A 1.0 ppb (1) 43.0 ppb (33) N/A 39.0 μg/m3 (35) N/A 35.0
 
Sept. 16, 2019, midnight N/A N/A N/A 13.0 ppb (12) N/A 1.0 ppb (1) 44.0 ppb (34) N/A 18.0 μg/m3 (16) N/A 34.0
 
Sept. 15, 2019, 11 p.m. N/A N/A N/A 6.0 ppb (6) N/A 1.0 ppb (1) 51.0 ppb (39) N/A 12.0 μg/m3 (11) N/A 39.0
 
Sept. 15, 2019, 10 p.m. N/A N/A N/A 3.0 ppb (3) N/A 1.0 ppb (1) 58.0 ppb (45) N/A 11.0 μg/m3 (10) N/A 45.0
 
Sept. 15, 2019, 9 p.m. N/A N/A N/A 2.0 ppb (2) N/A 1.0 ppb (1) 63.0 ppb (48) N/A 7.0 μg/m3 (6) N/A 48.0
 
Sept. 15, 2019, 8 p.m. N/A N/A N/A 2.0 ppb (2) N/A 1.0 ppb (1) 63.0 ppb (48) N/A 6.0 μg/m3 (5) N/A 48.0