AQSQID: 300710010

Site Name: Malta

Location: Phillips Co, MT

Reporting: True, Located: True

Current AQI: 20.0

Phillips Co MT, US: 48.317507, -107.862471

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
Sept. 21, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 15.0 ppb (12) N/A 5.0 μg/m3 (5) 4.9 μg/m3 (20) 20.0
 
Sept. 21, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 15.0 ppb (12) N/A 2.0 μg/m3 (2) -0.3 μg/m3 (0) 12.0
 
Sept. 21, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 15.0 ppb (12) N/A 4.0 μg/m3 (4) 4.9 μg/m3 (20) 20.0
 
Sept. 21, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 17.0 ppb (13) N/A 4.0 μg/m3 (4) 2.6 μg/m3 (11) 13.0
 
Sept. 21, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 15.0 ppb (12) N/A 2.0 μg/m3 (2) 0.8 μg/m3 (3) 12.0
 
Sept. 21, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (15) N/A 5.0 μg/m3 (5) -0.3 μg/m3 (0) 15.0
 
Sept. 21, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (15) N/A 5.0 μg/m3 (5) 2.8 μg/m3 (12) 15.0
 
Sept. 21, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 18.0 ppb (14) N/A 6.0 μg/m3 (5) 8.1 μg/m3 (34) 34.0
 
Sept. 21, 2019, midnight N/A N/A N/A N/A N/A N/A 22.0 ppb (17) N/A 15.0 μg/m3 (14) 2.6 μg/m3 (11) 17.0
 
Sept. 20, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (18) N/A 20.0 μg/m3 (18) 9.8 μg/m3 (41) 41.0
 
Sept. 20, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (20) N/A 14.0 μg/m3 (13) 2.9 μg/m3 (12) 20.0
 
Sept. 20, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (22) N/A 12.0 μg/m3 (11) 2.6 μg/m3 (11) 22.0
 
Sept. 20, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (22) N/A 9.0 μg/m3 (8) -3.1 μg/m3 (0) 22.0
 
Sept. 20, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (22) N/A 8.0 μg/m3 (7) 0.4 μg/m3 (2) 22.0
 
Sept. 20, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (18) N/A 5.0 μg/m3 (5) 4.8 μg/m3 (20) 20.0
 
Sept. 20, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (17) N/A 2.0 μg/m3 (2) 1.3 μg/m3 (5) 17.0
 
Sept. 20, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (16) N/A 2.0 μg/m3 (2) 6.4 μg/m3 (27) 27.0
 
Sept. 20, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 19.0 ppb (15) N/A -1.0 μg/m3 (0) 11.7 μg/m3 (49) 49.0
 
Sept. 20, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 14.0 ppb (11) N/A 6.0 μg/m3 (5) 6.7 μg/m3 (28) 28.0
 
Sept. 20, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 14.0 ppb (11) N/A 8.0 μg/m3 (7) 8.2 μg/m3 (34) 34.0
 
Sept. 20, 2019, noon N/A N/A N/A N/A N/A N/A 14.0 ppb (11) N/A 5.0 μg/m3 (5) 4.4 μg/m3 (18) 18.0
 
Sept. 20, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 15.0 ppb (12) N/A 3.0 μg/m3 (3) 7.7 μg/m3 (32) 32.0
 
Sept. 20, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A 13.0 ppb (10) N/A 5.0 μg/m3 (5) 6.4 μg/m3 (27) 27.0
 
Sept. 20, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A 14.0 ppb (11) N/A 10.0 μg/m3 (9) 6.8 μg/m3 (28) 28.0
 
Sept. 20, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 16.0 ppb (12) N/A 5.0 μg/m3 (5) 2.2 μg/m3 (9) 12.0
 
Sept. 20, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 17.0 ppb (13) N/A 10.0 μg/m3 (9) 8.9 μg/m3 (37) 37.0
 
Sept. 20, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (15) N/A 12.0 μg/m3 (11) 7.8 μg/m3 (32) 32.0
 
Sept. 20, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (20) N/A 16.0 μg/m3 (15) 4.0 μg/m3 (17) 20.0
 
Sept. 20, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (19) N/A 15.0 μg/m3 (14) 3.6 μg/m3 (15) 19.0
 
Sept. 20, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (19) N/A 7.0 μg/m3 (6) 9.0 μg/m3 (38) 38.0
 
Sept. 20, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (19) N/A 5.0 μg/m3 (5) 3.4 μg/m3 (14) 19.0
 
Sept. 20, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (22) N/A 15.0 μg/m3 (14) 2.6 μg/m3 (11) 22.0
 
Sept. 20, 2019, midnight N/A N/A N/A N/A N/A N/A 31.0 ppb (24) N/A 16.0 μg/m3 (15) 3.9 μg/m3 (16) 24.0
 
Sept. 19, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) N/A 10.0 μg/m3 (9) 6.8 μg/m3 (28) 28.0
 
Sept. 19, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (21) N/A 6.0 μg/m3 (5) 5.0 μg/m3 (21) 21.0
 
Sept. 19, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) N/A 4.0 μg/m3 (4) 2.8 μg/m3 (12) 23.0
 
Sept. 19, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) N/A 9.0 μg/m3 (8) 6.0 μg/m3 (25) 25.0
 
Sept. 19, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) N/A 6.0 μg/m3 (5) 3.2 μg/m3 (13) 24.0
 
Sept. 19, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) N/A 5.0 μg/m3 (5) -1.5 μg/m3 (0) 23.0
 
Sept. 19, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) N/A 7.0 μg/m3 (6) 0.9 μg/m3 (4) 24.0
 
Sept. 19, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (18) N/A 10.0 μg/m3 (9) -1.8 μg/m3 (0) 18.0
 
Sept. 19, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 19.0 ppb (15) N/A 15.0 μg/m3 (14) N/A 15.0
 
Sept. 19, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 17.0 ppb (13) N/A -2.0 μg/m3 (0) -0.4 μg/m3 (0) 13.0
 
Sept. 19, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 4.0 μg/m3 (4) 1.6 μg/m3 (7) 7.0
 
Sept. 19, 2019, noon N/A N/A N/A N/A N/A N/A 14.0 ppb (11) N/A 6.0 μg/m3 (5) 3.9 μg/m3 (16) 16.0
 
Sept. 19, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 15.0 ppb (12) N/A 2.0 μg/m3 (2) 2.2 μg/m3 (9) 12.0
 
Sept. 19, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A 15.0 ppb (12) N/A 2.0 μg/m3 (2) 4.3 μg/m3 (18) 18.0
 
Sept. 19, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A 18.0 ppb (14) N/A 7.0 μg/m3 (6) 5.6 μg/m3 (23) 23.0
 
Sept. 19, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (18) N/A 10.0 μg/m3 (9) 5.6 μg/m3 (23) 23.0
 
Sept. 19, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (18) N/A 12.0 μg/m3 (11) 4.9 μg/m3 (20) 20.0
 
Sept. 19, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (18) N/A 3.0 μg/m3 (3) 1.2 μg/m3 (5) 18.0
 
Sept. 19, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (17) N/A 0.0 μg/m3 (0) 2.0 μg/m3 (8) 17.0
 
Sept. 19, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (18) N/A 9.0 μg/m3 (8) 4.1 μg/m3 (17) 18.0
 
Sept. 19, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (20) N/A 9.0 μg/m3 (8) 0.6 μg/m3 (2) 20.0
 
Sept. 19, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (21) N/A 7.0 μg/m3 (6) -0.1 μg/m3 (0) 21.0
 
Sept. 19, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (18) N/A 10.0 μg/m3 (9) 8.6 μg/m3 (36) 36.0
 
Sept. 19, 2019, midnight N/A N/A N/A N/A N/A N/A 26.0 ppb (20) N/A 16.0 μg/m3 (15) 10.6 μg/m3 (44) 44.0
 
Sept. 18, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (25) N/A 15.0 μg/m3 (14) 14.5 μg/m3 (55) 55.0
 
Sept. 18, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) N/A 0.0 μg/m3 (0) 1.3 μg/m3 (5) 25.0
 
Sept. 18, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (25) N/A 9.0 μg/m3 (8) -2.8 μg/m3 (0) 25.0
 
Sept. 18, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) N/A 6.0 μg/m3 (5) 1.3 μg/m3 (5) 24.0
 
Sept. 18, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (25) N/A 17.0 μg/m3 (15) 1.6 μg/m3 (7) 25.0
 
Sept. 18, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (25) N/A 4.0 μg/m3 (4) -0.4 μg/m3 (0) 25.0
 
Sept. 18, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) N/A 2.0 μg/m3 (2) -2.6 μg/m3 (0) 23.0
 
Sept. 18, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (18) N/A 12.0 μg/m3 (11) 3.2 μg/m3 (13) 18.0
 
Sept. 18, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (17) N/A 15.0 μg/m3 (14) 5.3 μg/m3 (22) 22.0
 
Sept. 18, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 18.0 ppb (14) N/A 5.0 μg/m3 (5) 0.3 μg/m3 (1) 14.0
 
Sept. 18, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 16.0 ppb (12) N/A 14.0 μg/m3 (13) 2.2 μg/m3 (9) 13.0
 
Sept. 18, 2019, noon N/A N/A N/A N/A N/A N/A 16.0 ppb (12) N/A 14.0 μg/m3 (13) 1.5 μg/m3 (6) 13.0
 
Sept. 18, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 17.0 ppb (13) N/A 17.0 μg/m3 (15) 4.3 μg/m3 (18) 18.0
 
Sept. 18, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A 19.0 ppb (15) N/A 17.0 μg/m3 (15) 1.7 μg/m3 (7) 15.0
 
Sept. 18, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A 19.0 ppb (15) N/A 12.0 μg/m3 (11) -2.2 μg/m3 (0) 15.0
 
Sept. 18, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 17.0 ppb (13) N/A 7.0 μg/m3 (6) 3.6 μg/m3 (15) 15.0
 
Sept. 18, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 19.0 ppb (15) N/A 5.0 μg/m3 (5) 2.0 μg/m3 (8) 15.0
 
Sept. 18, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (17) N/A 6.0 μg/m3 (5) 3.4 μg/m3 (14) 17.0
 
Sept. 18, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (16) N/A 5.0 μg/m3 (5) 3.3 μg/m3 (14) 16.0
 
Sept. 18, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (21) N/A 8.0 μg/m3 (7) 12.2 μg/m3 (50) 50.0
 
Sept. 18, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) N/A 13.0 μg/m3 (12) 2.6 μg/m3 (11) 23.0
 
Sept. 18, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (25) N/A 12.0 μg/m3 (11) 15.1 μg/m3 (57) 57.0
 
Sept. 18, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) N/A 29.0 μg/m3 (26) 7.5 μg/m3 (31) 31.0
 
Sept. 18, 2019, midnight N/A N/A N/A N/A N/A N/A 32.0 ppb (25) N/A 34.0 μg/m3 (31) 1.6 μg/m3 (7) 31.0
 
Sept. 17, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (21) N/A 10.0 μg/m3 (9) 10.5 μg/m3 (44) 44.0
 
Sept. 17, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (21) N/A 15.0 μg/m3 (14) 6.6 μg/m3 (28) 28.0
 
Sept. 17, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (18) N/A 18.0 μg/m3 (16) 9.0 μg/m3 (38) 38.0
 
Sept. 17, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (20) N/A 20.0 μg/m3 (18) 2.9 μg/m3 (12) 20.0
 
Sept. 17, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (17) N/A 7.0 μg/m3 (6) 4.2 μg/m3 (18) 18.0
 
Sept. 17, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (15) N/A 18.0 μg/m3 (16) 7.5 μg/m3 (31) 31.0
 
Sept. 17, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (15) N/A 16.0 μg/m3 (15) 15.2 μg/m3 (57) 57.0
 
Sept. 17, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (17) N/A 20.0 μg/m3 (18) 8.1 μg/m3 (34) 34.0
 
Sept. 17, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (18) N/A 16.0 μg/m3 (15) 9.2 μg/m3 (38) 38.0
 
Sept. 17, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (17) N/A 25.0 μg/m3 (23) 6.5 μg/m3 (27) 27.0
 
Sept. 17, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (17) N/A 20.0 μg/m3 (18) 5.3 μg/m3 (22) 22.0
 
Sept. 17, 2019, noon N/A N/A N/A N/A N/A N/A 22.0 ppb (17) N/A 23.0 μg/m3 (21) 5.0 μg/m3 (21) 21.0
 
Sept. 17, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (15) N/A 24.0 μg/m3 (22) 6.9 μg/m3 (29) 29.0
 
Sept. 17, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (18) N/A 24.0 μg/m3 (22) 6.8 μg/m3 (28) 28.0
 
Sept. 17, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (18) N/A 22.0 μg/m3 (20) 7.2 μg/m3 (30) 30.0
 
Sept. 17, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (15) N/A 27.0 μg/m3 (25) 7.7 μg/m3 (32) 32.0
 
Sept. 17, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (15) N/A 23.0 μg/m3 (21) 9.0 μg/m3 (38) 38.0
 
Sept. 17, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (15) N/A 16.0 μg/m3 (15) 6.5 μg/m3 (27) 27.0
 
Sept. 17, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (16) N/A 13.0 μg/m3 (12) 7.4 μg/m3 (31) 31.0
 
Sept. 17, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (20) N/A 11.0 μg/m3 (10) 7.6 μg/m3 (32) 32.0
 
Sept. 17, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) N/A 8.0 μg/m3 (7) 6.3 μg/m3 (26) 26.0
 
Sept. 17, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (22) N/A 6.0 μg/m3 (5) 13.6 μg/m3 (53) 53.0
 
Sept. 17, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (22) N/A 17.0 μg/m3 (15) 18.1 μg/m3 (63) 63.0
 
Sept. 17, 2019, midnight N/A N/A N/A N/A N/A N/A 32.0 ppb (25) N/A 10.0 μg/m3 (9) 8.6 μg/m3 (36) 36.0
 
Sept. 16, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A 12.0 μg/m3 (11) 8.9 μg/m3 (37) 37.0
 
Sept. 16, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) N/A 6.0 μg/m3 (5) 3.6 μg/m3 (15) 28.0
 
Sept. 16, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (31) N/A 7.0 μg/m3 (6) -1.7 μg/m3 (0) 31.0
 
Sept. 16, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (29) N/A 18.0 μg/m3 (16) -0.8 μg/m3 (0) 29.0
 
Sept. 16, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A 11.0 μg/m3 (10) 0.8 μg/m3 (3) 28.0
 
Sept. 16, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) N/A 3.0 μg/m3 (3) 5.7 μg/m3 (24) 24.0
 
Sept. 16, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (19) N/A 0.0 μg/m3 (0) 3.1 μg/m3 (13) 19.0
 
Sept. 16, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 19.0 ppb (15) N/A N/A 3.1 μg/m3 (13) 15.0
 
Sept. 16, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 19.0 ppb (15) N/A N/A 9.1 μg/m3 (38) 38.0
 
Sept. 16, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 16.0 ppb (12) N/A 8.0 μg/m3 (7) 6.7 μg/m3 (28) 28.0
 
Sept. 16, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (17) N/A 9.0 μg/m3 (8) 7.0 μg/m3 (29) 29.0
 
Sept. 16, 2019, noon N/A N/A N/A N/A N/A N/A 27.0 ppb (21) N/A 19.0 μg/m3 (17) 6.2 μg/m3 (26) 26.0
 
Sept. 16, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (22) N/A 14.0 μg/m3 (13) 5.4 μg/m3 (23) 23.0
 
Sept. 16, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) N/A 16.0 μg/m3 (15) 8.6 μg/m3 (36) 36.0
 
Sept. 16, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (25) N/A 6.0 μg/m3 (5) 6.1 μg/m3 (25) 25.0
 
Sept. 16, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (22) N/A 15.0 μg/m3 (14) 8.0 μg/m3 (33) 33.0
 
Sept. 16, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) N/A 17.0 μg/m3 (15) 8.9 μg/m3 (37) 37.0
 
Sept. 16, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) N/A 25.0 μg/m3 (23) 11.7 μg/m3 (49) 49.0
 
Sept. 16, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (30) N/A 27.0 μg/m3 (25) 4.4 μg/m3 (18) 30.0
 
Sept. 16, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (30) N/A 18.0 μg/m3 (16) 4.3 μg/m3 (18) 30.0
 
Sept. 16, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) N/A 8.0 μg/m3 (7) 3.3 μg/m3 (14) 24.0
 
Sept. 16, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (21) N/A 0.0 μg/m3 (0) 5.4 μg/m3 (23) 23.0
 
Sept. 16, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (22) N/A 2.0 μg/m3 (2) 5.9 μg/m3 (25) 25.0
 
Sept. 16, 2019, midnight N/A N/A N/A N/A N/A N/A 29.0 ppb (22) N/A 18.0 μg/m3 (16) 11.3 μg/m3 (47) 47.0
 
Sept. 15, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) N/A 34.0 μg/m3 (31) 7.1 μg/m3 (30) 31.0
 
Sept. 15, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) N/A 16.0 μg/m3 (15) 1.6 μg/m3 (7) 28.0
 
Sept. 15, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) N/A 10.0 μg/m3 (9) 1.8 μg/m3 (8) 27.0
 
Sept. 15, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (25) N/A 12.0 μg/m3 (11) 0.0 μg/m3 (0) 25.0
 
Sept. 15, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) N/A 2.0 μg/m3 (2) -1.3 μg/m3 (0) 23.0
 
Sept. 15, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (21) N/A 1.0 μg/m3 (1) -0.2 μg/m3 (0) 21.0
 
Sept. 15, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (19) N/A -1.0 μg/m3 (0) 3.1 μg/m3 (13) 19.0
 
Sept. 15, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (18) N/A 5.0 μg/m3 (5) 1.8 μg/m3 (8) 18.0
 
Sept. 15, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (18) N/A 1.0 μg/m3 (1) 3.9 μg/m3 (16) 18.0
 
Sept. 15, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 16.0 ppb (12) N/A -3.0 μg/m3 (0) 0.5 μg/m3 (2) 12.0
 
Sept. 15, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 12.0 ppb (9) N/A 4.0 μg/m3 (4) 5.4 μg/m3 (23) 23.0
 
Sept. 15, 2019, noon N/A N/A N/A N/A N/A N/A 19.0 ppb (15) N/A 5.0 μg/m3 (5) 0.1 μg/m3 (0) 15.0
 
Sept. 15, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (16) N/A 3.0 μg/m3 (3) 6.1 μg/m3 (25) 25.0
 
Sept. 15, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (17) N/A 6.0 μg/m3 (5) 1.6 μg/m3 (7) 17.0
 
Sept. 15, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (17) N/A 9.0 μg/m3 (8) 1.3 μg/m3 (5) 17.0
 
Sept. 15, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (17) N/A 6.0 μg/m3 (5) 4.4 μg/m3 (18) 18.0
 
Sept. 15, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (17) N/A N/A 4.9 μg/m3 (20) 20.0
 
Sept. 15, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (21) N/A N/A 0.5 μg/m3 (2) 21.0
 
Sept. 15, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (21) N/A N/A -0.7 μg/m3 (0) 21.0
 
Sept. 15, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (22) N/A N/A 4.1 μg/m3 (17) 22.0
 
Sept. 15, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) N/A 70.0 μg/m3 (58) 1.1 μg/m3 (5) 58.0
 
Sept. 15, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (22) N/A N/A 5.6 μg/m3 (23) 23.0
 
Sept. 15, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (22) N/A 97.0 μg/m3 (71) 1.6 μg/m3 (7) 71.0
 
Sept. 15, 2019, midnight N/A N/A N/A N/A N/A N/A 33.0 ppb (25) N/A 75.0 μg/m3 (60) 2.9 μg/m3 (12) 60.0
 
Sept. 14, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) N/A N/A 6.2 μg/m3 (26) 26.0
 
Sept. 14, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (29) N/A 38.0 μg/m3 (35) 2.9 μg/m3 (12) 35.0
 
Sept. 14, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (30) N/A 11.0 μg/m3 (10) 3.1 μg/m3 (13) 30.0
 
Sept. 14, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (31) N/A N/A 2.3 μg/m3 (10) 31.0
 
Sept. 14, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (30) N/A N/A 1.2 μg/m3 (5) 30.0
 
Sept. 14, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) N/A N/A -2.7 μg/m3 (0) 28.0
 
Sept. 14, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) N/A 79.0 μg/m3 (62) -1.1 μg/m3 (0) 62.0
 
Sept. 14, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (22) N/A N/A 1.7 μg/m3 (7) 22.0
 
Sept. 14, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (21) N/A N/A -1.4 μg/m3 (0) 21.0
 
Sept. 14, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (18) N/A N/A 1.7 μg/m3 (7) 18.0
 
Sept. 14, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 19.0 ppb (15) N/A 45.0 μg/m3 (41) 1.9 μg/m3 (8) 41.0
 
Sept. 14, 2019, noon N/A N/A N/A N/A N/A N/A 19.0 ppb (15) N/A N/A -0.2 μg/m3 (0) 15.0
 
Sept. 14, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (17) N/A N/A 0.0 μg/m3 (0) 17.0
 
Sept. 14, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (16) N/A 3.0 μg/m3 (3) 2.6 μg/m3 (11) 16.0
 
Sept. 14, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (16) N/A 78.0 μg/m3 (62) -0.3 μg/m3 (0) 62.0