AQSQID: 300830002

Site Name: Sidney 201

Location: Richland Co, MT

Reporting: True, Located: True

Current AQI: 33.0

Richland Co MT, US: 47.8679, -104.676864

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
Sept. 11, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 11.0 ppb (8) N/A 6.0 μg/m3 (5) N/A 8.0
 
Sept. 11, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 13.0 ppb (10) N/A 6.0 μg/m3 (5) N/A 10.0
 
Sept. 11, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 13.0 ppb (10) N/A 2.0 μg/m3 (2) N/A 10.0
 
Sept. 11, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 15.0 ppb (12) N/A 0.0 μg/m3 (0) -4.3 μg/m3 (0) 12.0
 
Sept. 11, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (16) N/A 6.0 μg/m3 (5) -2.0 μg/m3 (0) 16.0
 
Sept. 11, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (18) N/A 5.0 μg/m3 (5) -3.9 μg/m3 (0) 18.0
 
Sept. 11, 2019, midnight N/A N/A N/A N/A N/A N/A 22.0 ppb (17) N/A 8.0 μg/m3 (7) -2.9 μg/m3 (0) 17.0
 
Sept. 10, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (19) N/A 20.0 μg/m3 (18) 0.1 μg/m3 (0) 19.0
 
Sept. 10, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (20) N/A 19.0 μg/m3 (17) N/A 20.0
 
Sept. 10, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (19) N/A 43.0 μg/m3 (39) N/A 39.0
 
Sept. 10, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (19) N/A 52.0 μg/m3 (47) N/A 47.0
 
Sept. 10, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 17.0 ppb (13) N/A 2.0 μg/m3 (2) 1.3 μg/m3 (5) 13.0
 
Sept. 10, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 16.0 ppb (12) N/A 4.0 μg/m3 (4) 2.5 μg/m3 (10) 12.0
 
Sept. 10, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 14.0 ppb (11) N/A 2.0 μg/m3 (2) -0.8 μg/m3 (0) 11.0
 
Sept. 10, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 13.0 ppb (10) N/A 3.0 μg/m3 (3) 0.7 μg/m3 (3) 10.0
 
Sept. 10, 2019, noon N/A N/A N/A N/A N/A N/A 13.0 ppb (10) N/A 5.0 μg/m3 (5) 5.9 μg/m3 (25) 25.0
 
Sept. 10, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 13.0 ppb (10) N/A 4.0 μg/m3 (4) 3.5 μg/m3 (15) 15.0
 
Sept. 10, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A 12.0 ppb (9) N/A 4.0 μg/m3 (4) 2.5 μg/m3 (10) 10.0
 
Sept. 10, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A 13.0 ppb (10) N/A 4.0 μg/m3 (4) -0.4 μg/m3 (0) 10.0
 
Sept. 10, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 13.0 ppb (10) N/A 7.0 μg/m3 (6) -1.0 μg/m3 (0) 10.0
 
Sept. 10, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 12.0 ppb (9) N/A 5.0 μg/m3 (5) -3.7 μg/m3 (0) 9.0
 
Sept. 10, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 11.0 ppb (8) N/A 0.0 μg/m3 (0) 3.9 μg/m3 (16) 16.0
 
Sept. 10, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 9.0 ppb (7) N/A 4.0 μg/m3 (4) 10.8 μg/m3 (45) 45.0
 
Sept. 10, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 9.0 ppb (7) N/A 1.0 μg/m3 (1) 7.8 μg/m3 (32) 32.0
 
Sept. 10, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 9.0 ppb (7) N/A 2.0 μg/m3 (2) 10.8 μg/m3 (45) 45.0
 
Sept. 10, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 9.0 ppb (7) N/A 3.0 μg/m3 (3) 3.6 μg/m3 (15) 15.0
 
Sept. 10, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 11.0 ppb (8) N/A 6.0 μg/m3 (5) -1.0 μg/m3 (0) 8.0
 
Sept. 10, 2019, midnight N/A N/A N/A N/A N/A N/A 14.0 ppb (11) N/A 5.0 μg/m3 (5) 0.3 μg/m3 (1) 11.0
 
Sept. 9, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 13.0 ppb (10) N/A 2.0 μg/m3 (2) 1.4 μg/m3 (6) 10.0
 
Sept. 9, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 10.0 ppb (8) N/A 1.0 μg/m3 (1) -1.6 μg/m3 (0) 8.0
 
Sept. 9, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 11.0 ppb (8) N/A 1.0 μg/m3 (1) -2.7 μg/m3 (0) 8.0
 
Sept. 9, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 12.0 ppb (9) N/A 2.0 μg/m3 (2) -2.5 μg/m3 (0) 9.0
 
Sept. 9, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 12.0 ppb (9) N/A 2.0 μg/m3 (2) N/A 9.0
 
Sept. 9, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 12.0 ppb (9) N/A 2.0 μg/m3 (2) N/A 9.0
 
Sept. 9, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 12.0 ppb (9) N/A -1.0 μg/m3 (0) -1.9 μg/m3 (0) 9.0
 
Sept. 9, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 12.0 ppb (9) N/A 3.0 μg/m3 (3) -0.9 μg/m3 (0) 9.0
 
Sept. 9, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 14.0 ppb (11) N/A 1.0 μg/m3 (1) -0.6 μg/m3 (0) 11.0
 
Sept. 9, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 15.0 ppb (12) N/A 3.0 μg/m3 (3) N/A 12.0
 
Sept. 9, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 16.0 ppb (12) N/A 0.0 μg/m3 (0) -2.4 μg/m3 (0) 12.0
 
Sept. 9, 2019, noon N/A N/A N/A N/A N/A N/A 16.0 ppb (12) N/A 3.0 μg/m3 (3) 2.3 μg/m3 (10) 12.0
 
Sept. 9, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 17.0 ppb (13) N/A 3.0 μg/m3 (3) 0.0 μg/m3 (0) 13.0
 
Sept. 9, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A 17.0 ppb (13) N/A -1.0 μg/m3 (0) -2.6 μg/m3 (0) 13.0
 
Sept. 9, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A 17.0 ppb (13) N/A 2.0 μg/m3 (2) 2.0 μg/m3 (8) 13.0
 
Sept. 9, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 17.0 ppb (13) N/A 3.0 μg/m3 (3) -1.0 μg/m3 (0) 13.0
 
Sept. 9, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 18.0 ppb (14) N/A 0.0 μg/m3 (0) -2.0 μg/m3 (0) 14.0
 
Sept. 9, 2019, 6 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) -3.5 μg/m3 (0) 15.0
 
Sept. 9, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (15) N/A 1.0 μg/m3 (1) 0.0 μg/m3 (0) 15.0
 
Sept. 9, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (17) N/A 3.0 μg/m3 (3) 0.9 μg/m3 (4) 17.0
 
Sept. 9, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (19) N/A 8.0 μg/m3 (7) 0.1 μg/m3 (0) 19.0
 
Sept. 9, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (21) N/A 4.0 μg/m3 (4) 1.9 μg/m3 (8) 21.0
 
Sept. 9, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (21) N/A 6.0 μg/m3 (5) -0.9 μg/m3 (0) 21.0
 
Sept. 9, 2019, midnight N/A N/A N/A N/A N/A N/A 30.0 ppb (23) N/A 11.0 μg/m3 (10) 7.0 μg/m3 (29) 29.0
 
Sept. 8, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) N/A 4.0 μg/m3 (4) 5.6 μg/m3 (23) 25.0
 
Sept. 8, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) N/A 2.0 μg/m3 (2) -1.2 μg/m3 (0) 26.0
 
Sept. 8, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) N/A 4.0 μg/m3 (4) -1.0 μg/m3 (0) 27.0
 
Sept. 8, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) N/A 6.0 μg/m3 (5) 2.3 μg/m3 (10) 26.0
 
Sept. 8, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) N/A 7.0 μg/m3 (6) -2.0 μg/m3 (0) 25.0
 
Sept. 8, 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) 3.2 μg/m3 (13) 23.0
 
Sept. 8, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) N/A 11.0 μg/m3 (10) 0.8 μg/m3 (3) 23.0
 
Sept. 8, 2019, 4 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) -1.1 μg/m3 (0) 22.0
 
Sept. 8, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (21) N/A 3.0 μg/m3 (3) -1.5 μg/m3 (0) 21.0
 
Sept. 8, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (22) N/A 7.0 μg/m3 (6) 0.5 μg/m3 (2) 22.0
 
Sept. 8, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (18) N/A 3.0 μg/m3 (3) -1.1 μg/m3 (0) 18.0
 
Sept. 8, 2019, noon N/A N/A N/A N/A N/A N/A 19.0 ppb (15) N/A 3.0 μg/m3 (3) -3.0 μg/m3 (0) 15.0
 
Sept. 8, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 19.0 ppb (15) N/A 1.0 μg/m3 (1) -1.0 μg/m3 (0) 15.0
 
Sept. 8, 2019, 10 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) 2.0 μg/m3 (8) 16.0
 
Sept. 8, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (18) N/A 5.0 μg/m3 (5) 4.9 μg/m3 (20) 20.0
 
Sept. 8, 2019, 8 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) 7.5 μg/m3 (31) 31.0
 
Sept. 8, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (18) N/A 7.0 μg/m3 (6) 7.4 μg/m3 (31) 31.0
 
Sept. 8, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (17) N/A 1.0 μg/m3 (1) 3.5 μg/m3 (15) 17.0
 
Sept. 8, 2019, 5 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) 5.7 μg/m3 (24) 24.0
 
Sept. 8, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (16) N/A 4.0 μg/m3 (4) 12.0 μg/m3 (50) 50.0
 
Sept. 8, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (17) N/A 4.0 μg/m3 (4) 10.3 μg/m3 (43) 43.0
 
Sept. 8, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (15) N/A 1.0 μg/m3 (1) 5.3 μg/m3 (22) 22.0
 
Sept. 8, 2019, 1 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) 4.0 μg/m3 (17) 17.0
 
Sept. 8, 2019, midnight N/A N/A N/A N/A N/A N/A 21.0 ppb (16) N/A N/A 6.8 μg/m3 (28) 28.0
 
Sept. 7, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (18) N/A N/A 8.0 μg/m3 (33) 33.0
 
Sept. 7, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (18) N/A 0.0 μg/m3 (0) 3.8 μg/m3 (16) 18.0
 
Sept. 7, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (22) N/A 5.0 μg/m3 (5) 2.5 μg/m3 (10) 22.0
 
Sept. 7, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (25) N/A 1.0 μg/m3 (1) 2.4 μg/m3 (10) 25.0
 
Sept. 7, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) N/A 3.0 μg/m3 (3) 5.3 μg/m3 (22) 25.0
 
Sept. 7, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) N/A 2.0 μg/m3 (2) 0.0 μg/m3 (0) 25.0
 
Sept. 7, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) N/A 2.0 μg/m3 (2) 5.0 μg/m3 (21) 24.0
 
Sept. 7, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) N/A 2.0 μg/m3 (2) 7.7 μg/m3 (32) 32.0
 
Sept. 7, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) N/A 0.0 μg/m3 (0) 4.7 μg/m3 (20) 23.0
 
Sept. 7, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (22) N/A 2.0 μg/m3 (2) 0.3 μg/m3 (1) 22.0
 
Sept. 7, 2019, 1 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) 3.7 μg/m3 (15) 25.0
 
Sept. 7, 2019, noon N/A N/A N/A N/A N/A N/A 33.0 ppb (25) N/A 3.0 μg/m3 (3) 5.4 μg/m3 (23) 25.0
 
Sept. 7, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) N/A 5.0 μg/m3 (5) 8.8 μg/m3 (37) 37.0
 
Sept. 7, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) N/A 4.0 μg/m3 (4) 6.0 μg/m3 (25) 25.0
 
Sept. 7, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (22) N/A 3.0 μg/m3 (3) 9.5 μg/m3 (40) 40.0
 
Sept. 7, 2019, 8 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) 7.9 μg/m3 (33) 33.0
 
Sept. 7, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (19) N/A 14.0 μg/m3 (13) 10.2 μg/m3 (42) 42.0
 
Sept. 7, 2019, 6 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) 5.5 μg/m3 (23) 23.0
 
Sept. 7, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (18) N/A 13.0 μg/m3 (12) -2.7 μg/m3 (0) 18.0
 
Sept. 7, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (18) N/A 20.0 μg/m3 (18) -4.5 μg/m3 (0) 18.0
 
Sept. 7, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (19) N/A 20.0 μg/m3 (18) N/A 19.0
 
Sept. 7, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) N/A 20.0 μg/m3 (18) N/A 23.0
 
Sept. 7, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (29) N/A 27.0 μg/m3 (25) -2.2 μg/m3 (0) 29.0
 
Sept. 7, 2019, midnight N/A N/A N/A N/A N/A N/A 46.0 ppb (35) N/A 23.0 μg/m3 (21) 8.6 μg/m3 (36) 36.0
 
Sept. 6, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (37) N/A 19.0 μg/m3 (17) 5.9 μg/m3 (25) 37.0
 
Sept. 6, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (37) N/A 26.0 μg/m3 (24) 5.6 μg/m3 (23) 37.0
 
Sept. 6, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (38) N/A 23.0 μg/m3 (21) 8.5 μg/m3 (35) 38.0
 
Sept. 6, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 50.0 ppb (38) N/A 22.0 μg/m3 (20) 4.7 μg/m3 (20) 38.0
 
Sept. 6, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (36) N/A 21.0 μg/m3 (19) 7.2 μg/m3 (30) 36.0
 
Sept. 6, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (32) N/A 25.0 μg/m3 (23) 6.3 μg/m3 (26) 32.0
 
Sept. 6, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (29) N/A 23.0 μg/m3 (21) 7.9 μg/m3 (33) 33.0
 
Sept. 6, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) N/A 22.0 μg/m3 (20) 5.6 μg/m3 (23) 26.0
 
Sept. 6, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) N/A 13.0 μg/m3 (12) N/A 24.0
 
Sept. 6, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (18) N/A 11.0 μg/m3 (10) -4.3 μg/m3 (0) 18.0
 
Sept. 6, 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) -1.0 μg/m3 (0) 17.0
 
Sept. 6, 2019, noon N/A N/A N/A N/A N/A N/A 21.0 ppb (16) N/A 20.0 μg/m3 (18) 8.7 μg/m3 (36) 36.0
 
Sept. 6, 2019, 11 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) 7.1 μg/m3 (30) 30.0
 
Sept. 6, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (18) N/A 18.0 μg/m3 (16) 7.8 μg/m3 (32) 32.0
 
Sept. 6, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (22) N/A 20.0 μg/m3 (18) 12.2 μg/m3 (50) 50.0
 
Sept. 6, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) N/A 18.0 μg/m3 (16) 8.5 μg/m3 (35) 35.0
 
Sept. 6, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) N/A 15.0 μg/m3 (14) 15.0 μg/m3 (56) 56.0
 
Sept. 6, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) N/A 21.0 μg/m3 (19) 3.9 μg/m3 (16) 26.0
 
Sept. 6, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) N/A 22.0 μg/m3 (20) 5.3 μg/m3 (22) 27.0
 
Sept. 6, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) N/A 19.0 μg/m3 (17) 3.7 μg/m3 (15) 28.0
 
Sept. 6, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) N/A 17.0 μg/m3 (15) 3.5 μg/m3 (15) 28.0
 
Sept. 6, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (30) N/A 16.0 μg/m3 (15) 3.7 μg/m3 (15) 30.0
 
Sept. 6, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (32) N/A 26.0 μg/m3 (24) 5.4 μg/m3 (23) 32.0
 
Sept. 6, 2019, midnight N/A N/A N/A N/A N/A N/A 47.0 ppb (36) N/A 34.0 μg/m3 (31) 11.3 μg/m3 (47) 47.0
 
Sept. 5, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 50.0 ppb (38) N/A 20.0 μg/m3 (18) 6.7 μg/m3 (28) 38.0
 
Sept. 5, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (37) N/A 8.0 μg/m3 (7) 7.8 μg/m3 (32) 37.0
 
Sept. 5, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (36) N/A 16.0 μg/m3 (15) 8.9 μg/m3 (37) 37.0
 
Sept. 5, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (36) N/A 16.0 μg/m3 (15) 4.3 μg/m3 (18) 36.0
 
Sept. 5, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (38) N/A 18.0 μg/m3 (16) 5.8 μg/m3 (24) 38.0
 
Sept. 5, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (38) N/A 19.0 μg/m3 (17) 8.3 μg/m3 (35) 38.0
 
Sept. 5, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (38) N/A 17.0 μg/m3 (15) 5.7 μg/m3 (24) 38.0
 
Sept. 5, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (36) N/A 24.0 μg/m3 (22) 6.2 μg/m3 (26) 36.0
 
Sept. 5, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (30) N/A 37.0 μg/m3 (34) 1.7 μg/m3 (7) 34.0
 
Sept. 5, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) N/A 30.0 μg/m3 (27) 4.5 μg/m3 (19) 27.0
 
Sept. 5, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) N/A 22.0 μg/m3 (20) 3.6 μg/m3 (15) 23.0
 
Sept. 5, 2019, noon N/A N/A N/A N/A N/A N/A 29.0 ppb (22) N/A 21.0 μg/m3 (19) 10.3 μg/m3 (43) 43.0
 
Sept. 5, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) N/A 25.0 μg/m3 (23) 16.6 μg/m3 (60) 60.0
 
Sept. 5, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) N/A 25.0 μg/m3 (23) 10.5 μg/m3 (44) 44.0
 
Sept. 5, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) N/A 24.0 μg/m3 (22) 1.1 μg/m3 (5) 25.0
 
Sept. 5, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (25) N/A 32.0 μg/m3 (29) -1.2 μg/m3 (0) 29.0
 
Sept. 5, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) N/A 39.0 μg/m3 (35) -0.1 μg/m3 (0) 35.0
 
Sept. 5, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (25) N/A 23.0 μg/m3 (21) 6.4 μg/m3 (27) 27.0
 
Sept. 5, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A 24.0 μg/m3 (22) 9.8 μg/m3 (41) 41.0
 
Sept. 5, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) N/A 54.0 μg/m3 (49) 11.9 μg/m3 (50) 50.0
 
Sept. 5, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) N/A 49.0 μg/m3 (45) 4.4 μg/m3 (18) 45.0
 
Sept. 5, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) N/A 56.0 μg/m3 (50) 13.1 μg/m3 (52) 52.0
 
Sept. 5, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) N/A 36.0 μg/m3 (33) 15.4 μg/m3 (57) 57.0
 
Sept. 5, 2019, midnight N/A N/A N/A N/A N/A N/A 43.0 ppb (33) N/A 28.0 μg/m3 (25) 21.0 μg/m3 (69) 69.0
 
Sept. 4, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (35) N/A 30.0 μg/m3 (27) 27.9 μg/m3 (84) 84.0
 
Sept. 4, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (35) N/A 25.0 μg/m3 (23) 9.7 μg/m3 (40) 40.0
 
Sept. 4, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (32) N/A 24.0 μg/m3 (22) -0.5 μg/m3 (0) 32.0
 
Sept. 4, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (29) N/A 29.0 μg/m3 (26) -4.5 μg/m3 (0) 29.0
 
Sept. 4, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) N/A 25.0 μg/m3 (23) -4.0 μg/m3 (0) 28.0
 
Sept. 4, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A N/A N/A 28.0
 
Sept. 4, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) N/A N/A N/A 26.0
 
Sept. 4, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) N/A 19.0 μg/m3 (17) 5.4 μg/m3 (23) 25.0
 
Sept. 4, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) N/A 17.0 μg/m3 (15) 10.1 μg/m3 (42) 42.0
 
Sept. 4, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) N/A 18.0 μg/m3 (16) -1.2 μg/m3 (0) 25.0
 
Sept. 4, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) N/A 12.0 μg/m3 (11) -0.8 μg/m3 (0) 23.0
 
Sept. 4, 2019, noon N/A N/A N/A N/A N/A N/A 24.0 ppb (18) N/A 14.0 μg/m3 (13) 5.2 μg/m3 (22) 22.0
 
Sept. 4, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) N/A 11.0 μg/m3 (10) 3.0 μg/m3 (12) 24.0
 
Sept. 4, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) N/A 12.0 μg/m3 (11) 0.0 μg/m3 (0) 25.0
 
Sept. 4, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) N/A 10.0 μg/m3 (9) 5.9 μg/m3 (25) 25.0
 
Sept. 4, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (22) N/A 14.0 μg/m3 (13) 5.0 μg/m3 (21) 22.0
 
Sept. 4, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) N/A 16.0 μg/m3 (15) 6.3 μg/m3 (26) 26.0
 
Sept. 4, 2019, 6 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) 7.3 μg/m3 (30) 30.0
 
Sept. 4, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (21) N/A 13.0 μg/m3 (12) 4.4 μg/m3 (18) 21.0
 
Sept. 4, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (21) N/A 18.0 μg/m3 (16) 6.0 μg/m3 (25) 25.0