AQSQID: 300870001

Site Name: Birney

Location: Birney (Tongue Riv Rd), MT

Reporting: True, Located: True

Current AQI: 39.0

Birney (Tongue Riv Rd) MT, US: 45.366151, -106.48982

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
Jan. 18, 2020, 10 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) 9.3 μg/m3 (39) 39.0
 
Jan. 18, 2020, 9 p.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (19) N/A 16.0 μg/m3 (15) 9.1 μg/m3 (38) 38.0
 
Jan. 18, 2020, 8 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) 9.3 μg/m3 (39) 39.0
 
Jan. 18, 2020, 7 p.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (18) N/A 14.0 μg/m3 (13) 7.0 μg/m3 (29) 29.0
 
Jan. 18, 2020, 6 p.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (16) N/A 28.0 μg/m3 (25) 5.0 μg/m3 (21) 25.0
 
Jan. 18, 2020, 5 p.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (15) N/A 22.0 μg/m3 (20) 8.1 μg/m3 (34) 34.0
 
Jan. 18, 2020, 4 p.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (15) N/A 17.0 μg/m3 (15) 6.8 μg/m3 (28) 28.0
 
Jan. 18, 2020, 3 p.m. N/A N/A N/A N/A N/A N/A 19.0 ppb (15) N/A 32.0 μg/m3 (29) 8.5 μg/m3 (35) 35.0
 
Jan. 18, 2020, 2 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) 11.1 μg/m3 (46) 46.0
 
Jan. 18, 2020, 1 p.m. N/A N/A N/A N/A N/A N/A 19.0 ppb (15) N/A 19.0 μg/m3 (17) 13.6 μg/m3 (53) 53.0
 
Jan. 18, 2020, noon N/A N/A N/A N/A N/A N/A 18.0 ppb (14) N/A 14.0 μg/m3 (13) 9.1 μg/m3 (38) 38.0
 
Jan. 18, 2020, 11 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) 11.8 μg/m3 (49) 49.0
 
Jan. 18, 2020, 10 a.m. N/A N/A N/A N/A N/A N/A 16.0 ppb (12) N/A 14.0 μg/m3 (13) 9.4 μg/m3 (39) 39.0
 
Jan. 18, 2020, 9 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) 9.7 μg/m3 (40) 40.0
 
Jan. 18, 2020, 8 a.m. N/A N/A N/A N/A N/A N/A 16.0 ppb (12) N/A 13.0 μg/m3 (12) 14.1 μg/m3 (54) 54.0
 
Jan. 18, 2020, 7 a.m. N/A N/A N/A N/A N/A N/A 16.0 ppb (12) N/A 27.0 μg/m3 (25) 15.7 μg/m3 (58) 58.0
 
Jan. 18, 2020, 6 a.m. N/A N/A N/A N/A N/A N/A 17.0 ppb (13) N/A 5.0 μg/m3 (5) 6.6 μg/m3 (28) 28.0
 
Jan. 18, 2020, 5 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) 8.5 μg/m3 (35) 35.0
 
Jan. 18, 2020, 4 a.m. N/A N/A N/A N/A N/A N/A 19.0 ppb (15) N/A 25.0 μg/m3 (23) 4.2 μg/m3 (18) 23.0
 
Jan. 18, 2020, 3 a.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (16) N/A 16.0 μg/m3 (15) 5.6 μg/m3 (23) 23.0
 
Jan. 18, 2020, 2 a.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (19) N/A 18.0 μg/m3 (16) 4.9 μg/m3 (20) 20.0
 
Jan. 18, 2020, 1 a.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (19) N/A 22.0 μg/m3 (20) 7.9 μg/m3 (33) 33.0
 
Jan. 18, 2020, midnight N/A N/A N/A N/A N/A N/A 27.0 ppb (21) N/A 4.0 μg/m3 (4) 6.8 μg/m3 (28) 28.0
 
Jan. 17, 2020, 11 p.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (21) N/A 8.0 μg/m3 (7) 6.3 μg/m3 (26) 26.0
 
Jan. 17, 2020, 10 p.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (21) N/A 14.0 μg/m3 (13) 4.3 μg/m3 (18) 21.0
 
Jan. 17, 2020, 9 p.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (21) N/A 0.0 μg/m3 (0) 7.0 μg/m3 (29) 29.0
 
Jan. 17, 2020, 8 p.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (21) N/A 13.0 μg/m3 (12) 5.4 μg/m3 (23) 23.0
 
Jan. 17, 2020, 7 p.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (18) N/A 24.0 μg/m3 (22) 7.1 μg/m3 (30) 30.0
 
Jan. 17, 2020, 6 p.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (17) N/A 21.0 μg/m3 (19) 5.7 μg/m3 (24) 24.0
 
Jan. 17, 2020, 5 p.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (17) N/A 13.0 μg/m3 (12) 6.0 μg/m3 (25) 25.0
 
Jan. 17, 2020, 4 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) 4.4 μg/m3 (18) 18.0
 
Jan. 17, 2020, 3 p.m. N/A N/A N/A N/A N/A N/A 18.0 ppb (14) N/A 22.0 μg/m3 (20) 2.7 μg/m3 (11) 20.0
 
Jan. 17, 2020, 2 p.m. N/A N/A N/A N/A N/A N/A 17.0 ppb (13) N/A 11.0 μg/m3 (10) 3.8 μg/m3 (16) 16.0
 
Jan. 17, 2020, 1 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) 4.9 μg/m3 (20) 20.0
 
Jan. 17, 2020, noon N/A N/A N/A N/A N/A N/A 19.0 ppb (15) N/A 1.0 μg/m3 (1) 1.2 μg/m3 (5) 15.0
 
Jan. 17, 2020, 11 a.m. N/A N/A N/A N/A N/A N/A 19.0 ppb (15) N/A 4.0 μg/m3 (4) 0.8 μg/m3 (3) 15.0
 
Jan. 17, 2020, 10 a.m. N/A N/A N/A N/A N/A N/A 19.0 ppb (15) N/A 13.0 μg/m3 (12) 2.8 μg/m3 (12) 15.0
 
Jan. 17, 2020, 9 a.m. N/A N/A N/A N/A N/A N/A 18.0 ppb (14) N/A N/A 2.6 μg/m3 (11) 14.0
 
Jan. 17, 2020, 8 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) 3.3 μg/m3 (14) 14.0
 
Jan. 17, 2020, 7 a.m. N/A N/A N/A N/A N/A N/A 18.0 ppb (14) N/A 9.0 μg/m3 (8) 1.7 μg/m3 (7) 14.0
 
Jan. 17, 2020, 6 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) 1.3 μg/m3 (5) 13.0
 
Jan. 17, 2020, 5 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) 0.0 μg/m3 (0) 14.0
 
Jan. 17, 2020, 4 a.m. N/A N/A N/A N/A N/A N/A 17.0 ppb (13) N/A 15.0 μg/m3 (14) 6.4 μg/m3 (27) 27.0
 
Jan. 17, 2020, 3 a.m. N/A N/A N/A N/A N/A N/A 16.0 ppb (12) N/A 20.0 μg/m3 (18) 5.7 μg/m3 (24) 24.0
 
Jan. 17, 2020, 2 a.m. N/A N/A N/A N/A N/A N/A 18.0 ppb (14) N/A 20.0 μg/m3 (18) 4.6 μg/m3 (19) 19.0
 
Jan. 17, 2020, 1 a.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (15) N/A 25.0 μg/m3 (23) 7.2 μg/m3 (30) 30.0
 
Jan. 17, 2020, midnight N/A N/A N/A N/A N/A N/A 22.0 ppb (17) N/A 32.0 μg/m3 (29) 3.7 μg/m3 (15) 29.0
 
Jan. 16, 2020, 11 p.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (19) N/A 47.0 μg/m3 (43) 6.6 μg/m3 (28) 43.0
 
Jan. 16, 2020, 10 p.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (22) N/A 29.0 μg/m3 (26) 4.1 μg/m3 (17) 26.0
 
Jan. 16, 2020, 9 p.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (22) N/A 7.0 μg/m3 (6) 2.4 μg/m3 (10) 22.0
 
Jan. 16, 2020, 8 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) 4.2 μg/m3 (18) 23.0
 
Jan. 16, 2020, 7 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) N/A 21.0
 
Jan. 16, 2020, 6 p.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (18) N/A 15.0 μg/m3 (14) 0.3 μg/m3 (1) 18.0
 
Jan. 16, 2020, 5 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) 6.9 μg/m3 (29) 29.0
 
Jan. 16, 2020, 4 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) 7.5 μg/m3 (31) 31.0
 
Jan. 16, 2020, 3 p.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (18) N/A 15.0 μg/m3 (14) 2.7 μg/m3 (11) 18.0
 
Jan. 16, 2020, 2 p.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (16) N/A 16.0 μg/m3 (15) 2.8 μg/m3 (12) 16.0
 
Jan. 16, 2020, 1 p.m. N/A N/A N/A N/A N/A N/A 18.0 ppb (14) N/A 3.0 μg/m3 (3) 1.9 μg/m3 (8) 14.0
 
Jan. 16, 2020, noon N/A N/A N/A N/A N/A N/A 17.0 ppb (13) N/A -1.0 μg/m3 (0) 3.0 μg/m3 (12) 13.0
 
Jan. 16, 2020, 11 a.m. N/A N/A N/A N/A N/A N/A 16.0 ppb (12) N/A 8.0 μg/m3 (7) 7.9 μg/m3 (33) 33.0
 
Jan. 16, 2020, 10 a.m. N/A N/A N/A N/A N/A N/A 16.0 ppb (12) N/A 2.0 μg/m3 (2) 4.6 μg/m3 (19) 19.0
 
Jan. 16, 2020, 9 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) 6.1 μg/m3 (25) 25.0
 
Jan. 16, 2020, 8 a.m. N/A N/A N/A N/A N/A N/A 15.0 ppb (12) N/A 7.0 μg/m3 (6) 2.0 μg/m3 (8) 12.0
 
Jan. 16, 2020, 7 a.m. N/A N/A N/A N/A N/A N/A 15.0 ppb (12) N/A 10.0 μg/m3 (9) -4.7 μg/m3 (0) 12.0
 
Jan. 16, 2020, 6 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) 5.0 μg/m3 (21) 21.0
 
Jan. 16, 2020, 5 a.m. N/A N/A N/A N/A N/A N/A 15.0 ppb (12) N/A 6.0 μg/m3 (5) 7.5 μg/m3 (31) 31.0
 
Jan. 16, 2020, 4 a.m. N/A N/A N/A N/A N/A N/A 15.0 ppb (12) N/A 6.0 μg/m3 (5) 6.8 μg/m3 (28) 28.0
 
Jan. 16, 2020, 3 a.m. N/A N/A N/A N/A N/A N/A 15.0 ppb (12) N/A 7.0 μg/m3 (6) 3.3 μg/m3 (14) 14.0
 
Jan. 16, 2020, 2 a.m. N/A N/A N/A N/A N/A N/A 15.0 ppb (12) N/A 21.0 μg/m3 (19) 5.0 μg/m3 (21) 21.0
 
Jan. 16, 2020, 1 a.m. N/A N/A N/A N/A N/A N/A 16.0 ppb (12) N/A 55.0 μg/m3 (50) 13.2 μg/m3 (53) 53.0
 
Jan. 16, 2020, midnight N/A N/A N/A N/A N/A N/A 18.0 ppb (14) N/A 49.0 μg/m3 (45) 10.3 μg/m3 (43) 45.0
 
Jan. 15, 2020, 11 p.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (17) N/A 37.0 μg/m3 (34) 6.7 μg/m3 (28) 34.0
 
Jan. 15, 2020, 10 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) 8.7 μg/m3 (36) 36.0
 
Jan. 15, 2020, 9 p.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (17) N/A 11.0 μg/m3 (10) 8.6 μg/m3 (36) 36.0
 
Jan. 15, 2020, 8 p.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (17) N/A 3.0 μg/m3 (3) 7.6 μg/m3 (32) 32.0
 
Jan. 15, 2020, 7 p.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (17) N/A 4.0 μg/m3 (4) 4.5 μg/m3 (19) 19.0
 
Jan. 15, 2020, 6 p.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (18) N/A 13.0 μg/m3 (12) 2.6 μg/m3 (11) 18.0
 
Jan. 15, 2020, 5 p.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (19) N/A 5.0 μg/m3 (5) 1.3 μg/m3 (5) 19.0
 
Jan. 15, 2020, 4 p.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (19) N/A N/A 4.8 μg/m3 (20) 20.0
 
Jan. 15, 2020, 3 p.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (20) N/A N/A 6.9 μg/m3 (29) 29.0
 
Jan. 15, 2020, 2 p.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (20) N/A 10.0 μg/m3 (9) 7.6 μg/m3 (32) 32.0
 
Jan. 15, 2020, 1 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) 4.9 μg/m3 (20) 20.0
 
Jan. 15, 2020, noon N/A N/A N/A N/A N/A N/A 27.0 ppb (21) N/A 0.0 μg/m3 (0) 3.4 μg/m3 (14) 21.0
 
Jan. 15, 2020, 11 a.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (21) N/A -3.0 μg/m3 (0) 2.4 μg/m3 (10) 21.0
 
Jan. 15, 2020, 10 a.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (21) N/A 11.0 μg/m3 (10) 7.4 μg/m3 (31) 31.0
 
Jan. 15, 2020, 9 a.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (18) N/A 5.0 μg/m3 (5) 8.7 μg/m3 (36) 36.0
 
Jan. 15, 2020, 8 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) 5.1 μg/m3 (21) 21.0
 
Jan. 15, 2020, 7 a.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (18) N/A N/A 1.6 μg/m3 (7) 18.0
 
Jan. 15, 2020, 6 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) 4.5 μg/m3 (19) 19.0
 
Jan. 15, 2020, 5 a.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (20) N/A 8.0 μg/m3 (7) 3.3 μg/m3 (14) 20.0
 
Jan. 15, 2020, 4 a.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (20) N/A -2.0 μg/m3 (0) 3.9 μg/m3 (16) 20.0
 
Jan. 15, 2020, 3 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) 2.6 μg/m3 (11) 19.0
 
Jan. 15, 2020, 2 a.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (18) N/A 4.0 μg/m3 (4) 2.7 μg/m3 (11) 18.0
 
Jan. 15, 2020, 1 a.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (18) N/A 4.0 μg/m3 (4) 3.7 μg/m3 (15) 18.0
 
Jan. 15, 2020, midnight N/A N/A N/A N/A N/A N/A 25.0 ppb (19) N/A 20.0 μg/m3 (18) 6.1 μg/m3 (25) 25.0
 
Jan. 14, 2020, 11 p.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (19) N/A 32.0 μg/m3 (29) 10.6 μg/m3 (44) 44.0
 
Jan. 14, 2020, 10 p.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (19) N/A 7.0 μg/m3 (6) 3.9 μg/m3 (16) 19.0
 
Jan. 14, 2020, 9 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) 5.0 μg/m3 (21) 21.0
 
Jan. 14, 2020, 8 p.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (18) N/A 7.0 μg/m3 (6) 6.9 μg/m3 (29) 29.0
 
Jan. 14, 2020, 7 p.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (18) N/A 4.0 μg/m3 (4) 2.8 μg/m3 (12) 18.0
 
Jan. 14, 2020, 6 p.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (18) N/A 0.0 μg/m3 (0) 1.2 μg/m3 (5) 18.0
 
Jan. 14, 2020, 5 p.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (16) N/A 22.0 μg/m3 (20) 6.1 μg/m3 (25) 25.0
 
Jan. 14, 2020, 4 p.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (16) N/A 4.0 μg/m3 (4) 5.5 μg/m3 (23) 23.0
 
Jan. 14, 2020, 3 p.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (16) N/A -5.0 μg/m3 (0) 4.4 μg/m3 (18) 18.0
 
Jan. 14, 2020, 2 p.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (15) N/A 13.0 μg/m3 (12) 3.4 μg/m3 (14) 15.0
 
Jan. 14, 2020, 1 p.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (15) N/A 3.0 μg/m3 (3) 6.6 μg/m3 (28) 28.0
 
Jan. 14, 2020, noon N/A N/A N/A N/A N/A N/A 20.0 ppb (15) N/A 5.0 μg/m3 (5) 3.7 μg/m3 (15) 15.0
 
Jan. 14, 2020, 11 a.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (15) N/A 10.0 μg/m3 (9) 3.8 μg/m3 (16) 16.0
 
Jan. 14, 2020, 10 a.m. N/A N/A N/A N/A N/A N/A 19.0 ppb (15) N/A 0.0 μg/m3 (0) 4.2 μg/m3 (18) 18.0
 
Jan. 14, 2020, 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) 5.9 μg/m3 (25) 25.0
 
Jan. 14, 2020, 8 a.m. N/A N/A N/A N/A N/A N/A 17.0 ppb (13) N/A 16.0 μg/m3 (15) 3.4 μg/m3 (14) 15.0
 
Jan. 14, 2020, 7 a.m. N/A N/A N/A N/A N/A N/A 18.0 ppb (14) N/A 3.0 μg/m3 (3) -1.7 μg/m3 (0) 14.0
 
Jan. 14, 2020, 6 a.m. N/A N/A N/A N/A N/A N/A 19.0 ppb (15) N/A -2.0 μg/m3 (0) 3.6 μg/m3 (15) 15.0
 
Jan. 14, 2020, 5 a.m. N/A N/A N/A N/A N/A N/A 18.0 ppb (14) N/A 5.0 μg/m3 (5) 1.3 μg/m3 (5) 14.0
 
Jan. 14, 2020, 4 a.m. N/A N/A N/A N/A N/A N/A 17.0 ppb (13) N/A 5.0 μg/m3 (5) 7.4 μg/m3 (31) 31.0
 
Jan. 14, 2020, 3 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
 
Jan. 14, 2020, 2 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) 2.1 μg/m3 (9) 13.0
 
Jan. 14, 2020, 1 a.m. N/A N/A N/A N/A N/A N/A 17.0 ppb (13) N/A 0.0 μg/m3 (0) 9.0 μg/m3 (38) 38.0
 
Jan. 14, 2020, midnight N/A N/A N/A N/A N/A N/A 16.0 ppb (12) N/A 21.0 μg/m3 (19) 12.6 μg/m3 (51) 51.0
 
Jan. 13, 2020, 11 p.m. N/A N/A N/A N/A N/A N/A 16.0 ppb (12) N/A 19.0 μg/m3 (17) 9.9 μg/m3 (41) 41.0
 
Jan. 13, 2020, 10 p.m. N/A N/A N/A N/A N/A N/A 17.0 ppb (13) N/A 5.0 μg/m3 (5) 11.7 μg/m3 (49) 49.0
 
Jan. 13, 2020, 9 p.m. N/A N/A N/A N/A N/A N/A 18.0 ppb (14) N/A 17.0 μg/m3 (15) 7.2 μg/m3 (30) 30.0
 
Jan. 13, 2020, 8 p.m. N/A N/A N/A N/A N/A N/A 18.0 ppb (14) N/A 8.0 μg/m3 (7) 9.4 μg/m3 (39) 39.0
 
Jan. 13, 2020, 7 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) 9.8 μg/m3 (41) 41.0
 
Jan. 13, 2020, 6 p.m. N/A N/A N/A N/A N/A N/A 18.0 ppb (14) N/A 12.0 μg/m3 (11) 4.7 μg/m3 (20) 20.0
 
Jan. 13, 2020, 5 p.m. N/A N/A N/A N/A N/A N/A 18.0 ppb (14) N/A 18.0 μg/m3 (16) 14.2 μg/m3 (55) 55.0
 
Jan. 13, 2020, 4 p.m. N/A N/A N/A N/A N/A N/A 14.0 ppb (11) N/A 25.0 μg/m3 (23) 14.5 μg/m3 (55) 55.0
 
Jan. 13, 2020, 3 p.m. N/A N/A N/A N/A N/A N/A 11.0 ppb (8) N/A 14.0 μg/m3 (13) 11.5 μg/m3 (48) 48.0
 
Jan. 13, 2020, 2 p.m. N/A N/A N/A N/A N/A N/A 13.0 ppb (10) N/A 12.0 μg/m3 (11) 13.4 μg/m3 (53) 53.0
 
Jan. 13, 2020, 1 p.m. N/A N/A N/A N/A N/A N/A 13.0 ppb (10) N/A 16.0 μg/m3 (15) 10.4 μg/m3 (43) 43.0
 
Jan. 13, 2020, noon N/A N/A N/A N/A N/A N/A 15.0 ppb (12) N/A 14.0 μg/m3 (13) 9.1 μg/m3 (38) 38.0
 
Jan. 13, 2020, 11 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) 12.2 μg/m3 (50) 50.0
 
Jan. 13, 2020, 10 a.m. N/A N/A N/A N/A N/A N/A 17.0 ppb (13) N/A 26.0 μg/m3 (24) 10.3 μg/m3 (43) 43.0
 
Jan. 13, 2020, 9 a.m. N/A N/A N/A N/A N/A N/A 18.0 ppb (14) N/A 1.0 μg/m3 (1) 12.7 μg/m3 (51) 51.0
 
Jan. 13, 2020, 8 a.m. N/A N/A N/A N/A N/A N/A 18.0 ppb (14) N/A 12.0 μg/m3 (11) 8.2 μg/m3 (34) 34.0
 
Jan. 13, 2020, 7 a.m. N/A N/A N/A N/A N/A N/A 18.0 ppb (14) N/A 5.0 μg/m3 (5) -3.0 μg/m3 (0) 14.0
 
Jan. 13, 2020, 6 a.m. N/A N/A N/A N/A N/A N/A 18.0 ppb (14) N/A 12.0 μg/m3 (11) 7.8 μg/m3 (32) 32.0
 
Jan. 13, 2020, 5 a.m. N/A N/A N/A N/A N/A N/A 19.0 ppb (15) N/A 6.0 μg/m3 (5) 8.6 μg/m3 (36) 36.0
 
Jan. 13, 2020, 4 a.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (15) N/A 8.0 μg/m3 (7) 6.2 μg/m3 (26) 26.0
 
Jan. 13, 2020, 3 a.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (15) N/A 8.0 μg/m3 (7) 7.2 μg/m3 (30) 30.0
 
Jan. 13, 2020, 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) 0.0 μg/m3 (0) 16.0
 
Jan. 13, 2020, 1 a.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (17) N/A 7.0 μg/m3 (6) -1.3 μg/m3 (0) 17.0
 
Jan. 13, 2020, midnight N/A N/A N/A N/A N/A N/A 28.0 ppb (22) N/A 14.0 μg/m3 (13) 2.6 μg/m3 (11) 22.0
 
Jan. 12, 2020, 11 p.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) N/A 15.0 μg/m3 (14) 1.8 μg/m3 (8) 23.0
 
Jan. 12, 2020, 10 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) -0.5 μg/m3 (0) 24.0
 
Jan. 12, 2020, 9 p.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) N/A 0.0 μg/m3 (0) 2.0 μg/m3 (8) 24.0
 
Jan. 12, 2020, 8 p.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) N/A 0.0 μg/m3 (0) 0.6 μg/m3 (2) 24.0
 
Jan. 12, 2020, 7 p.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (25) N/A 0.0 μg/m3 (0) -1.3 μg/m3 (0) 25.0
 
Jan. 12, 2020, 6 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) 3.2 μg/m3 (13) 21.0
 
Jan. 12, 2020, 5 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) 3.7 μg/m3 (15) 18.0
 
Jan. 12, 2020, 4 p.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (16) N/A 5.0 μg/m3 (5) 4.7 μg/m3 (20) 20.0
 
Jan. 12, 2020, 3 p.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (15) N/A 9.0 μg/m3 (8) 4.0 μg/m3 (17) 17.0
 
Jan. 12, 2020, 2 p.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (16) N/A 9.0 μg/m3 (8) 4.4 μg/m3 (18) 18.0
 
Jan. 12, 2020, 1 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) 4.6 μg/m3 (19) 19.0
 
Jan. 12, 2020, noon N/A N/A N/A N/A N/A N/A 20.0 ppb (15) N/A 6.0 μg/m3 (5) 5.0 μg/m3 (21) 21.0
 
Jan. 12, 2020, 11 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) 8.2 μg/m3 (34) 34.0
 
Jan. 12, 2020, 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) 2.7 μg/m3 (11) 16.0
 
Jan. 12, 2020, 9 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) 5.3 μg/m3 (22) 22.0
 
Jan. 12, 2020, 8 a.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (18) N/A 1.0 μg/m3 (1) -0.3 μg/m3 (0) 18.0
 
Jan. 12, 2020, 7 a.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (19) N/A 3.0 μg/m3 (3) 0.1 μg/m3 (0) 19.0
 
Jan. 12, 2020, 6 a.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (20) N/A 1.0 μg/m3 (1) 3.2 μg/m3 (13) 20.0
 
Jan. 12, 2020, 5 a.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (20) N/A 4.0 μg/m3 (4) 1.4 μg/m3 (6) 20.0
 
Jan. 12, 2020, 4 a.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (18) N/A -3.0 μg/m3 (0) 1.9 μg/m3 (8) 18.0
 
Jan. 12, 2020, 3 a.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (17) N/A 7.0 μg/m3 (6) 4.0 μg/m3 (17) 17.0
 
Jan. 12, 2020, 2 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) 0.7 μg/m3 (3) 17.0
 
Jan. 12, 2020, 1 a.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (18) N/A 6.0 μg/m3 (5) 0.5 μg/m3 (2) 18.0
 
Jan. 12, 2020, midnight N/A N/A N/A N/A N/A N/A 27.0 ppb (21) N/A 5.0 μg/m3 (5) 1.5 μg/m3 (6) 21.0
 
Jan. 11, 2020, 11 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) 3.1 μg/m3 (13) 24.0