AQSQID: 300870001

Site Name: Birney

Location: Rosebud Co, MT

Reporting: True, Located: True

Current AQI: 25.0

Rosebud Co MT, US: 45.366151, -106.48982

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
Sept. 21, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (25) N/A 7.0 μg/m3 (6) 1.2 μg/m3 (5) 25.0
 
Sept. 21, 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) 3.2 μg/m3 (13) 23.0
 
Sept. 21, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (20) N/A 1.0 μg/m3 (1) 1.2 μg/m3 (5) 20.0
 
Sept. 21, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (18) N/A 2.0 μg/m3 (2) 0.3 μg/m3 (1) 18.0
 
Sept. 21, 2019, noon N/A N/A N/A N/A N/A N/A 24.0 ppb (18) N/A 0.0 μg/m3 (0) -1.5 μg/m3 (0) 18.0
 
Sept. 21, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (18) N/A 3.0 μg/m3 (3) 2.7 μg/m3 (11) 18.0
 
Sept. 21, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (22) N/A 2.0 μg/m3 (2) 1.2 μg/m3 (5) 22.0
 
Sept. 21, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) N/A 3.0 μg/m3 (3) -1.2 μg/m3 (0) 24.0
 
Sept. 21, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) N/A 1.0 μg/m3 (1) 1.9 μg/m3 (8) 24.0
 
Sept. 21, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (22) N/A -3.0 μg/m3 (0) 1.9 μg/m3 (8) 22.0
 
Sept. 21, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (22) N/A 5.0 μg/m3 (5) 0.4 μg/m3 (2) 22.0
 
Sept. 21, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (18) N/A 3.0 μg/m3 (3) 2.6 μg/m3 (11) 18.0
 
Sept. 21, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (18) N/A 8.0 μg/m3 (7) 2.3 μg/m3 (10) 18.0
 
Sept. 21, 2019, 3 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) 5.0 μg/m3 (21) 21.0
 
Sept. 21, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (20) N/A 5.0 μg/m3 (5) 1.3 μg/m3 (5) 20.0
 
Sept. 21, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (21) N/A 9.0 μg/m3 (8) 6.7 μg/m3 (28) 28.0
 
Sept. 21, 2019, midnight N/A N/A N/A N/A N/A N/A 26.0 ppb (20) N/A 11.0 μg/m3 (10) 5.3 μg/m3 (22) 22.0
 
Sept. 20, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (22) N/A 10.0 μg/m3 (9) 4.9 μg/m3 (20) 22.0
 
Sept. 20, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) N/A 16.0 μg/m3 (15) 2.2 μg/m3 (9) 25.0
 
Sept. 20, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) N/A 15.0 μg/m3 (14) 4.2 μg/m3 (18) 26.0
 
Sept. 20, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) N/A 9.0 μg/m3 (8) 3.7 μg/m3 (15) 27.0
 
Sept. 20, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) N/A 6.0 μg/m3 (5) 1.2 μg/m3 (5) 25.0
 
Sept. 20, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) N/A 6.0 μg/m3 (5) 0.0 μg/m3 (0) 25.0
 
Sept. 20, 2019, 5 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 (0) 24.0
 
Sept. 20, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) N/A 8.0 μg/m3 (7) 1.3 μg/m3 (5) 23.0
 
Sept. 20, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (22) N/A 6.0 μg/m3 (5) 1.8 μg/m3 (8) 22.0
 
Sept. 20, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (21) N/A 9.0 μg/m3 (8) 1.5 μg/m3 (6) 21.0
 
Sept. 20, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (16) N/A 13.0 μg/m3 (12) 2.0 μg/m3 (8) 16.0
 
Sept. 20, 2019, noon N/A N/A N/A N/A N/A N/A 21.0 ppb (16) N/A 8.0 μg/m3 (7) 4.0 μg/m3 (17) 17.0
 
Sept. 20, 2019, 11 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. 20, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (19) N/A 6.0 μg/m3 (5) 3.5 μg/m3 (15) 19.0
 
Sept. 20, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (15) N/A 11.0 μg/m3 (10) 6.4 μg/m3 (27) 27.0
 
Sept. 20, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 18.0 ppb (14) N/A 8.0 μg/m3 (7) 7.5 μg/m3 (31) 31.0
 
Sept. 20, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 16.0 ppb (12) N/A 11.0 μg/m3 (10) 11.6 μg/m3 (48) 48.0
 
Sept. 20, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 18.0 ppb (14) N/A 10.0 μg/m3 (9) 2.5 μg/m3 (10) 14.0
 
Sept. 20, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (17) N/A 10.0 μg/m3 (9) 7.7 μg/m3 (32) 32.0
 
Sept. 20, 2019, 4 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) 4.6 μg/m3 (19) 19.0
 
Sept. 20, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (20) N/A 28.0 μg/m3 (25) 8.4 μg/m3 (35) 35.0
 
Sept. 20, 2019, 2 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) 6.6 μg/m3 (28) 28.0
 
Sept. 20, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) N/A 11.0 μg/m3 (10) 5.9 μg/m3 (25) 25.0
 
Sept. 20, 2019, midnight N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A 12.0 μg/m3 (11) 4.2 μg/m3 (18) 28.0
 
Sept. 19, 2019, 11 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) 4.8 μg/m3 (20) 28.0
 
Sept. 19, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (29) N/A 19.0 μg/m3 (17) 5.6 μg/m3 (23) 29.0
 
Sept. 19, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (31) N/A 13.0 μg/m3 (12) 4.3 μg/m3 (18) 31.0
 
Sept. 19, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (30) N/A 7.0 μg/m3 (6) 1.6 μg/m3 (7) 30.0
 
Sept. 19, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (30) N/A 8.0 μg/m3 (7) 2.6 μg/m3 (11) 30.0
 
Sept. 19, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (29) N/A 13.0 μg/m3 (12) -0.5 μg/m3 (0) 29.0
 
Sept. 19, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) N/A 20.0 μg/m3 (18) 3.2 μg/m3 (13) 27.0
 
Sept. 19, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (19) N/A 18.0 μg/m3 (16) 2.8 μg/m3 (12) 19.0
 
Sept. 19, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 16.0 μg/m3 (15) 2.5 μg/m3 (10) 15.0
 
Sept. 19, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 10.0 μg/m3 (9) 1.2 μg/m3 (5) 9.0
 
Sept. 19, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 7.0 μg/m3 (6) 4.4 μg/m3 (18) 18.0
 
Sept. 19, 2019, noon N/A N/A N/A N/A N/A N/A 11.0 ppb (8) N/A 7.0 μg/m3 (6) 5.2 μg/m3 (22) 22.0
 
Sept. 19, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 11.0 ppb (8) N/A 12.0 μg/m3 (11) 1.7 μg/m3 (7) 11.0
 
Sept. 19, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A 10.0 ppb (8) N/A 9.0 μg/m3 (8) 8.9 μg/m3 (37) 37.0
 
Sept. 19, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A 10.0 ppb (8) N/A 14.0 μg/m3 (13) 7.4 μg/m3 (31) 31.0
 
Sept. 19, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 9.0 ppb (7) N/A 8.0 μg/m3 (7) 4.5 μg/m3 (19) 19.0
 
Sept. 19, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 12.0 ppb (9) N/A 9.0 μg/m3 (8) -0.2 μg/m3 (0) 9.0
 
Sept. 19, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 15.0 ppb (12) N/A 9.0 μg/m3 (8) 4.8 μg/m3 (20) 20.0
 
Sept. 19, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (16) N/A 8.0 μg/m3 (7) 4.9 μg/m3 (20) 20.0
 
Sept. 19, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (21) N/A 10.0 μg/m3 (9) 4.1 μg/m3 (17) 21.0
 
Sept. 19, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (22) N/A 13.0 μg/m3 (12) 7.7 μg/m3 (32) 32.0
 
Sept. 19, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) N/A 19.0 μg/m3 (17) 7.6 μg/m3 (32) 32.0
 
Sept. 19, 2019, 1 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) 4.2 μg/m3 (18) 28.0
 
Sept. 19, 2019, midnight N/A N/A N/A N/A N/A N/A 47.0 ppb (36) N/A 14.0 μg/m3 (13) 4.3 μg/m3 (18) 36.0
 
Sept. 18, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 50.0 ppb (38) N/A 17.0 μg/m3 (15) 1.4 μg/m3 (6) 38.0
 
Sept. 18, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (38) N/A 11.0 μg/m3 (10) 2.0 μg/m3 (8) 38.0
 
Sept. 18, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (35) N/A 6.0 μg/m3 (5) -1.6 μg/m3 (0) 35.0
 
Sept. 18, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (32) N/A 8.0 μg/m3 (7) 0.0 μg/m3 (0) 32.0
 
Sept. 18, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (32) N/A 12.0 μg/m3 (11) -1.8 μg/m3 (0) 32.0
 
Sept. 18, 2019, 6 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) 0.1 μg/m3 (0) 30.0
 
Sept. 18, 2019, 5 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) 1.0 μg/m3 (4) 25.0
 
Sept. 18, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (20) N/A 7.0 μg/m3 (6) 1.8 μg/m3 (8) 20.0
 
Sept. 18, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (16) N/A 8.0 μg/m3 (7) 5.5 μg/m3 (23) 23.0
 
Sept. 18, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 16.0 ppb (12) N/A 9.0 μg/m3 (8) 4.1 μg/m3 (17) 17.0
 
Sept. 18, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 17.0 ppb (13) N/A 9.0 μg/m3 (8) 6.5 μg/m3 (27) 27.0
 
Sept. 18, 2019, noon N/A N/A N/A N/A N/A N/A 18.0 ppb (14) N/A 8.0 μg/m3 (7) 5.1 μg/m3 (21) 21.0
 
Sept. 18, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 11.0 ppb (8) N/A 10.0 μg/m3 (9) 7.3 μg/m3 (30) 30.0
 
Sept. 18, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A 16.0 ppb (12) N/A 12.0 μg/m3 (11) 6.5 μg/m3 (27) 27.0
 
Sept. 18, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (17) N/A 5.0 μg/m3 (5) 2.8 μg/m3 (12) 17.0
 
Sept. 18, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (25) N/A 8.0 μg/m3 (7) 3.1 μg/m3 (13) 25.0
 
Sept. 18, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (25) N/A 1.0 μg/m3 (1) -0.3 μg/m3 (0) 25.0
 
Sept. 18, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) N/A 3.0 μg/m3 (3) 1.6 μg/m3 (7) 25.0
 
Sept. 18, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) N/A 2.0 μg/m3 (2) -0.9 μg/m3 (0) 26.0
 
Sept. 18, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (29) N/A 1.0 μg/m3 (1) 1.8 μg/m3 (8) 29.0
 
Sept. 18, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (30) N/A 1.0 μg/m3 (1) -1.1 μg/m3 (0) 30.0
 
Sept. 18, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (29) N/A -2.0 μg/m3 (0) -0.7 μg/m3 (0) 29.0
 
Sept. 18, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (33) N/A 2.0 μg/m3 (2) 0.3 μg/m3 (1) 33.0
 
Sept. 18, 2019, midnight N/A N/A N/A N/A N/A N/A 43.0 ppb (33) N/A 9.0 μg/m3 (8) 1.6 μg/m3 (7) 33.0
 
Sept. 17, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (31) N/A 14.0 μg/m3 (13) -1.5 μg/m3 (0) 31.0
 
Sept. 17, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) N/A 13.0 μg/m3 (12) 11.0 μg/m3 (46) 46.0
 
Sept. 17, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (29) N/A 26.0 μg/m3 (24) 12.2 μg/m3 (50) 50.0
 
Sept. 17, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (29) N/A 13.0 μg/m3 (12) 5.1 μg/m3 (21) 29.0
 
Sept. 17, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (34) N/A 6.0 μg/m3 (5) 2.6 μg/m3 (11) 34.0
 
Sept. 17, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (32) N/A 8.0 μg/m3 (7) 1.2 μg/m3 (5) 32.0
 
Sept. 17, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (29) N/A 11.0 μg/m3 (10) 2.0 μg/m3 (8) 29.0
 
Sept. 17, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A 19.0 μg/m3 (17) 4.4 μg/m3 (18) 28.0
 
Sept. 17, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (20) N/A 29.0 μg/m3 (26) 3.6 μg/m3 (15) 26.0
 
Sept. 17, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (18) N/A 46.0 μg/m3 (42) 6.9 μg/m3 (29) 42.0
 
Sept. 17, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (16) N/A 37.0 μg/m3 (34) 9.7 μg/m3 (40) 40.0
 
Sept. 17, 2019, noon N/A N/A N/A N/A N/A N/A 20.0 ppb (15) N/A 11.0 μg/m3 (10) 3.6 μg/m3 (15) 15.0
 
Sept. 17, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 19.0 ppb (15) N/A 8.0 μg/m3 (7) 4.5 μg/m3 (19) 19.0
 
Sept. 17, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A 18.0 ppb (14) N/A 11.0 μg/m3 (10) 5.6 μg/m3 (23) 23.0
 
Sept. 17, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A 18.0 ppb (14) N/A 13.0 μg/m3 (12) 7.6 μg/m3 (32) 32.0
 
Sept. 17, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (15) N/A 17.0 μg/m3 (15) 3.6 μg/m3 (15) 15.0
 
Sept. 17, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (17) N/A 17.0 μg/m3 (15) 2.4 μg/m3 (10) 17.0
 
Sept. 17, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (18) N/A 15.0 μg/m3 (14) 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 22.0 ppb (17) N/A 15.0 μg/m3 (14) 3.1 μg/m3 (13) 17.0
 
Sept. 17, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 18.0 ppb (14) N/A 24.0 μg/m3 (22) 4.9 μg/m3 (20) 22.0
 
Sept. 17, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 19.0 ppb (15) N/A 48.0 μg/m3 (44) 3.1 μg/m3 (13) 44.0
 
Sept. 17, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (19) N/A 110.0 μg/m3 (78) 8.6 μg/m3 (36) 78.0
 
Sept. 17, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) N/A 59.0 μg/m3 (52) 23.6 μg/m3 (75) 75.0
 
Sept. 17, 2019, midnight N/A N/A N/A N/A N/A N/A 41.0 ppb (32) N/A 14.0 μg/m3 (13) 30.6 μg/m3 (90) 90.0
 
Sept. 16, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (35) N/A 37.0 μg/m3 (34) 17.9 μg/m3 (63) 63.0
 
Sept. 16, 2019, 10 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) 8.7 μg/m3 (36) 38.0
 
Sept. 16, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 50.0 ppb (38) N/A 4.0 μg/m3 (4) -5.6 μg/m3 (0) 38.0
 
Sept. 16, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (37) N/A -2.0 μg/m3 (0) N/A 37.0
 
Sept. 16, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (34) N/A 14.0 μg/m3 (13) 0.2 μg/m3 (1) 34.0
 
Sept. 16, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (29) N/A 19.0 μg/m3 (17) 6.5 μg/m3 (27) 29.0
 
Sept. 16, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) N/A 22.0 μg/m3 (20) 2.5 μg/m3 (10) 25.0
 
Sept. 16, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (22) N/A 21.0 μg/m3 (19) 5.6 μg/m3 (23) 23.0
 
Sept. 16, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (18) N/A 6.0 μg/m3 (5) 2.9 μg/m3 (12) 18.0
 
Sept. 16, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 19.0 ppb (15) N/A 14.0 μg/m3 (13) 4.1 μg/m3 (17) 17.0
 
Sept. 16, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 17.0 ppb (13) N/A 18.0 μg/m3 (16) 6.1 μg/m3 (25) 25.0
 
Sept. 16, 2019, noon N/A N/A N/A N/A N/A N/A 16.0 ppb (12) N/A 9.0 μg/m3 (8) 7.6 μg/m3 (32) 32.0
 
Sept. 16, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 16.0 ppb (12) N/A 11.0 μg/m3 (10) 7.4 μg/m3 (31) 31.0
 
Sept. 16, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A 17.0 ppb (13) N/A 14.0 μg/m3 (13) 9.2 μg/m3 (38) 38.0
 
Sept. 16, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A 18.0 ppb (14) N/A 15.0 μg/m3 (14) 8.9 μg/m3 (37) 37.0
 
Sept. 16, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 19.0 ppb (15) N/A 15.0 μg/m3 (14) 10.7 μg/m3 (45) 45.0
 
Sept. 16, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 15.0 ppb (12) N/A 23.0 μg/m3 (21) 13.0 μg/m3 (52) 52.0
 
Sept. 16, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 14.0 ppb (11) N/A 17.0 μg/m3 (15) 9.2 μg/m3 (38) 38.0
 
Sept. 16, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 14.0 ppb (11) N/A 17.0 μg/m3 (15) 14.0 μg/m3 (54) 54.0
 
Sept. 16, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 19.0 ppb (15) N/A 16.0 μg/m3 (15) 11.4 μg/m3 (48) 48.0
 
Sept. 16, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (18) N/A 38.0 μg/m3 (35) 8.8 μg/m3 (37) 37.0
 
Sept. 16, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (22) N/A 73.0 μg/m3 (59) 13.6 μg/m3 (53) 59.0
 
Sept. 16, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A 40.0 μg/m3 (36) 28.4 μg/m3 (85) 85.0
 
Sept. 16, 2019, midnight N/A N/A N/A N/A N/A N/A 44.0 ppb (34) N/A 12.0 μg/m3 (11) 18.8 μg/m3 (64) 64.0
 
Sept. 15, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (36) N/A N/A N/A 36.0
 
Sept. 15, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (35) N/A 8.0 μg/m3 (7) -1.8 μg/m3 (0) 35.0
 
Sept. 15, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (35) N/A 12.0 μg/m3 (11) 3.1 μg/m3 (13) 35.0
 
Sept. 15, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (35) N/A 9.0 μg/m3 (8) -1.2 μg/m3 (0) 35.0
 
Sept. 15, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (34) N/A 18.0 μg/m3 (16) 0.0 μg/m3 (0) 34.0
 
Sept. 15, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (32) N/A 41.0 μg/m3 (37) 3.3 μg/m3 (14) 37.0
 
Sept. 15, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) N/A 32.0 μg/m3 (29) 4.4 μg/m3 (18) 29.0
 
Sept. 15, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (20) N/A 17.0 μg/m3 (15) 1.6 μg/m3 (7) 20.0
 
Sept. 15, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (16) N/A 12.0 μg/m3 (11) 0.7 μg/m3 (3) 16.0
 
Sept. 15, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 15.0 ppb (12) N/A 10.0 μg/m3 (9) 3.5 μg/m3 (15) 15.0
 
Sept. 15, 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) 3.7 μg/m3 (15) 15.0
 
Sept. 15, 2019, noon N/A N/A N/A N/A N/A N/A 13.0 ppb (10) N/A 11.0 μg/m3 (10) 3.7 μg/m3 (15) 15.0
 
Sept. 15, 2019, 11 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) 3.0 μg/m3 (12) 12.0
 
Sept. 15, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A 13.0 ppb (10) N/A 11.0 μg/m3 (10) 6.5 μg/m3 (27) 27.0
 
Sept. 15, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A 12.0 ppb (9) N/A 8.0 μg/m3 (7) 7.0 μg/m3 (29) 29.0
 
Sept. 15, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 12.0 ppb (9) N/A 13.0 μg/m3 (12) 7.3 μg/m3 (30) 30.0
 
Sept. 15, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 13.0 ppb (10) N/A 24.0 μg/m3 (22) 6.5 μg/m3 (27) 27.0
 
Sept. 15, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 13.0 ppb (10) N/A 12.0 μg/m3 (11) 7.3 μg/m3 (30) 30.0
 
Sept. 15, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 16.0 ppb (12) N/A 12.0 μg/m3 (11) 6.7 μg/m3 (28) 28.0
 
Sept. 15, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 14.0 ppb (11) N/A 40.0 μg/m3 (36) 14.8 μg/m3 (56) 56.0
 
Sept. 15, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 18.0 ppb (14) N/A 78.0 μg/m3 (62) 14.6 μg/m3 (56) 62.0
 
Sept. 15, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (17) N/A 31.0 μg/m3 (28) 9.1 μg/m3 (38) 38.0
 
Sept. 15, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (22) N/A 46.0 μg/m3 (42) 7.5 μg/m3 (31) 42.0
 
Sept. 15, 2019, midnight N/A N/A N/A N/A N/A N/A 35.0 ppb (27) N/A 16.0 μg/m3 (15) 2.4 μg/m3 (10) 27.0
 
Sept. 14, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (32) N/A 23.0 μg/m3 (21) 4.6 μg/m3 (19) 32.0
 
Sept. 14, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (32) N/A 6.0 μg/m3 (5) -2.9 μg/m3 (0) 32.0
 
Sept. 14, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (32) N/A 11.0 μg/m3 (10) -1.7 μg/m3 (0) 32.0
 
Sept. 14, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (31) N/A 9.0 μg/m3 (8) -3.0 μg/m3 (0) 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 15.0 μg/m3 (14) -0.4 μg/m3 (0) 30.0
 
Sept. 14, 2019, 6 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) 0.2 μg/m3 (1) 27.0
 
Sept. 14, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (19) N/A 9.0 μg/m3 (8) 2.5 μg/m3 (10) 19.0