AQSQID: 300870001

Site Name: Birney

Location: Birney (Tongue Riv Rd), MT

Reporting: True, Located: True

Current AQI: 37.0

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
April 9, 2020, midnight N/A N/A N/A N/A N/A N/A 48.0 ppb (37) N/A 3.0 μg/m3 (3) 0.9 μg/m3 (4) 37.0
 
April 8, 2020, 11 p.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (38) N/A N/A N/A 38.0
 
April 8, 2020, 10 p.m. N/A N/A N/A N/A N/A N/A 50.0 ppb (38) N/A 13.0 μg/m3 (12) -2.4 μg/m3 (0) 38.0
 
April 8, 2020, 9 p.m. N/A N/A N/A N/A N/A N/A 50.0 ppb (38) N/A 6.0 μg/m3 (5) -4.5 μg/m3 (0) 38.0
 
April 8, 2020, 8 p.m. N/A N/A N/A N/A N/A N/A 51.0 ppb (39) N/A 6.0 μg/m3 (5) 18.6 μg/m3 (64) 64.0
 
April 8, 2020, 7 p.m. N/A N/A N/A N/A N/A N/A 51.0 ppb (39) N/A -3.0 μg/m3 (0) 14.0 μg/m3 (54) 54.0
 
April 8, 2020, 6 p.m. N/A N/A N/A N/A N/A N/A 51.0 ppb (39) N/A 10.0 μg/m3 (9) 4.8 μg/m3 (20) 39.0
 
April 8, 2020, 5 p.m. N/A N/A N/A N/A N/A N/A 51.0 ppb (39) N/A 2.0 μg/m3 (2) 5.4 μg/m3 (23) 39.0
 
April 8, 2020, 4 p.m. N/A N/A N/A N/A N/A N/A 52.0 ppb (40) N/A 11.0 μg/m3 (10) -3.3 μg/m3 (0) 40.0
 
April 8, 2020, 3 p.m. N/A N/A N/A N/A N/A N/A 50.0 ppb (38) N/A 8.0 μg/m3 (7) 0.9 μg/m3 (4) 38.0
 
April 8, 2020, 2 p.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (37) N/A 22.0 μg/m3 (20) 4.0 μg/m3 (17) 37.0
 
April 8, 2020, 1 p.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (37) N/A 48.0 μg/m3 (44) 3.5 μg/m3 (15) 44.0
 
April 8, 2020, noon N/A N/A N/A N/A N/A N/A 46.0 ppb (35) N/A 7.0 μg/m3 (6) 3.1 μg/m3 (13) 35.0
 
April 8, 2020, 11 a.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (34) N/A 3.0 μg/m3 (3) 22.4 μg/m3 (72) 72.0
 
April 8, 2020, 10 a.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (35) N/A 4.0 μg/m3 (4) 5.0 μg/m3 (21) 35.0
 
April 8, 2020, 9 a.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (36) N/A 3.0 μg/m3 (3) 5.5 μg/m3 (23) 36.0
 
April 8, 2020, 8 a.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (37) N/A 30.0 μg/m3 (27) 7.7 μg/m3 (32) 37.0
 
April 8, 2020, 7 a.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (36) N/A 37.0 μg/m3 (34) 9.8 μg/m3 (41) 41.0
 
April 8, 2020, 6 a.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (32) N/A 5.0 μg/m3 (5) 3.2 μg/m3 (13) 32.0
 
April 8, 2020, 5 a.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (32) N/A 11.0 μg/m3 (10) 3.7 μg/m3 (15) 32.0
 
April 8, 2020, 4 a.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (30) N/A 8.0 μg/m3 (7) 10.3 μg/m3 (43) 43.0
 
April 8, 2020, 3 a.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) N/A 14.0 μg/m3 (13) 15.2 μg/m3 (57) 57.0
 
April 8, 2020, 2 a.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) N/A 29.0 μg/m3 (26) 3.5 μg/m3 (15) 27.0
 
April 8, 2020, 1 a.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (32) N/A 9.0 μg/m3 (8) -0.7 μg/m3 (0) 32.0
 
April 8, 2020, midnight N/A N/A N/A N/A N/A N/A 46.0 ppb (35) N/A 0.0 μg/m3 (0) -0.6 μg/m3 (0) 35.0
 
April 7, 2020, 11 p.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (36) N/A 9.0 μg/m3 (8) -2.1 μg/m3 (0) 36.0
 
April 7, 2020, 10 p.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (36) N/A 17.0 μg/m3 (15) -0.4 μg/m3 (0) 36.0
 
April 7, 2020, 9 p.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (36) N/A 2.0 μg/m3 (2) -1.8 μg/m3 (0) 36.0
 
April 7, 2020, 8 p.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (34) N/A 3.0 μg/m3 (3) -2.6 μg/m3 (0) 34.0
 
April 7, 2020, 7 p.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (32) N/A 0.0 μg/m3 (0) -0.8 μg/m3 (0) 32.0
 
April 7, 2020, 6 p.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (32) N/A 4.0 μg/m3 (4) -2.4 μg/m3 (0) 32.0
 
April 7, 2020, 5 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) 0.6 μg/m3 (2) 30.0
 
April 7, 2020, 4 p.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) N/A 13.0 μg/m3 (12) 0.0 μg/m3 (0) 26.0
 
April 7, 2020, 3 p.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (19) N/A N/A -0.1 μg/m3 (0) 19.0
 
April 7, 2020, 2 p.m. N/A N/A N/A N/A N/A N/A 19.0 ppb (15) N/A 12.0 μg/m3 (11) 5.6 μg/m3 (23) 23.0
 
April 7, 2020, 1 p.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (15) N/A 6.0 μg/m3 (5) 3.7 μg/m3 (15) 15.0
 
April 7, 2020, noon N/A N/A N/A N/A N/A N/A 18.0 ppb (14) N/A 0.0 μg/m3 (0) 3.0 μg/m3 (12) 14.0
 
April 7, 2020, 11 a.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (15) N/A 14.0 μg/m3 (13) 3.8 μg/m3 (16) 16.0
 
April 7, 2020, 10 a.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (19) N/A 2.0 μg/m3 (2) 6.0 μg/m3 (25) 25.0
 
April 7, 2020, 9 a.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (16) N/A 0.0 μg/m3 (0) 6.6 μg/m3 (28) 28.0
 
April 7, 2020, 8 a.m. N/A N/A N/A N/A N/A N/A 19.0 ppb (15) N/A 14.0 μg/m3 (13) 3.4 μg/m3 (14) 15.0
 
April 7, 2020, 7 a.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (17) N/A 14.0 μg/m3 (13) 4.8 μg/m3 (20) 20.0
 
April 7, 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 (0) -1.3 μg/m3 (0) 20.0
 
April 7, 2020, 5 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) 2.9 μg/m3 (12) 25.0
 
April 7, 2020, 4 a.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) N/A 0.0 μg/m3 (0) 3.1 μg/m3 (13) 26.0
 
April 7, 2020, 3 a.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) N/A 11.0 μg/m3 (10) -1.3 μg/m3 (0) 27.0
 
April 7, 2020, 2 a.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) N/A N/A 1.8 μg/m3 (8) 28.0
 
April 7, 2020, 1 a.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (34) N/A 5.0 μg/m3 (5) -0.8 μg/m3 (0) 34.0
 
April 7, 2020, midnight N/A N/A N/A N/A N/A N/A 45.0 ppb (35) N/A 9.0 μg/m3 (8) 0.6 μg/m3 (2) 35.0
 
April 6, 2020, 11 p.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (35) N/A 9.0 μg/m3 (8) -0.5 μg/m3 (0) 35.0
 
April 6, 2020, 10 p.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (36) N/A 7.0 μg/m3 (6) 2.3 μg/m3 (10) 36.0
 
April 6, 2020, 9 p.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (36) N/A 22.0 μg/m3 (20) 15.5 μg/m3 (57) 57.0
 
April 6, 2020, 8 p.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (35) N/A 26.0 μg/m3 (24) 1.7 μg/m3 (7) 35.0
 
April 6, 2020, 7 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) 1.8 μg/m3 (8) 32.0
 
April 6, 2020, 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) 2.9 μg/m3 (12) 32.0
 
April 6, 2020, 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) 1.9 μg/m3 (8) 25.0
 
April 6, 2020, 4 p.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (19) N/A 2.0 μg/m3 (2) 4.6 μg/m3 (19) 19.0
 
April 6, 2020, 3 p.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (15) N/A 7.0 μg/m3 (6) 5.0 μg/m3 (21) 21.0
 
April 6, 2020, 2 p.m. N/A N/A N/A N/A N/A N/A 19.0 ppb (15) N/A 4.0 μg/m3 (4) 2.2 μg/m3 (9) 15.0
 
April 6, 2020, 1 p.m. N/A N/A N/A N/A N/A N/A 19.0 ppb (15) N/A 11.0 μg/m3 (10) 6.4 μg/m3 (27) 27.0
 
April 6, 2020, noon N/A N/A N/A N/A N/A N/A 17.0 ppb (13) N/A 8.0 μg/m3 (7) 3.4 μg/m3 (14) 14.0
 
April 6, 2020, 11 a.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (15) N/A 7.0 μg/m3 (6) 3.7 μg/m3 (15) 15.0
 
April 6, 2020, 10 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) 7.5 μg/m3 (31) 31.0
 
April 6, 2020, 9 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) 9.9 μg/m3 (41) 41.0
 
April 6, 2020, 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) 11.8 μg/m3 (49) 49.0
 
April 6, 2020, 7 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) 9.8 μg/m3 (41) 41.0
 
April 6, 2020, 6 a.m. N/A N/A N/A N/A N/A N/A 19.0 ppb (15) N/A 10.0 μg/m3 (9) 5.7 μg/m3 (24) 24.0
 
April 6, 2020, 5 a.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (15) N/A 6.0 μg/m3 (5) 5.8 μg/m3 (24) 24.0
 
April 6, 2020, 4 a.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (18) N/A 36.0 μg/m3 (33) 7.3 μg/m3 (30) 33.0
 
April 6, 2020, 3 a.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (22) N/A 13.0 μg/m3 (12) 2.6 μg/m3 (11) 22.0
 
April 6, 2020, 2 a.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) N/A 5.0 μg/m3 (5) 2.5 μg/m3 (10) 26.0
 
April 6, 2020, 1 a.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (32) N/A 17.0 μg/m3 (15) 2.4 μg/m3 (10) 32.0
 
April 6, 2020, midnight N/A N/A N/A N/A N/A N/A 44.0 ppb (34) N/A 5.0 μg/m3 (5) -0.1 μg/m3 (0) 34.0
 
April 5, 2020, 11 p.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (35) N/A 21.0 μg/m3 (19) 1.4 μg/m3 (6) 35.0
 
April 5, 2020, 10 p.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (35) N/A 13.0 μg/m3 (12) 3.0 μg/m3 (12) 35.0
 
April 5, 2020, 9 p.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (34) N/A 5.0 μg/m3 (5) 4.5 μg/m3 (19) 34.0
 
April 5, 2020, 8 p.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (32) N/A 52.0 μg/m3 (47) 9.0 μg/m3 (38) 47.0
 
April 5, 2020, 7 p.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (29) N/A 71.0 μg/m3 (58) 11.0 μg/m3 (46) 58.0
 
April 5, 2020, 6 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) 3.9 μg/m3 (16) 27.0
 
April 5, 2020, 5 p.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) N/A 7.0 μg/m3 (6) 0.5 μg/m3 (2) 26.0
 
April 5, 2020, 4 p.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (25) N/A 5.0 μg/m3 (5) 1.0 μg/m3 (4) 25.0
 
April 5, 2020, 3 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) 5.2 μg/m3 (22) 22.0
 
April 5, 2020, 2 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) 4.9 μg/m3 (20) 20.0
 
April 5, 2020, 1 p.m. N/A N/A N/A N/A N/A N/A 18.0 ppb (14) N/A 0.0 μg/m3 (0) 1.0 μg/m3 (4) 14.0
 
April 5, 2020, noon N/A N/A N/A N/A N/A N/A 19.0 ppb (15) N/A 0.0 μg/m3 (0) 7.3 μg/m3 (30) 30.0
 
April 5, 2020, 11 a.m. N/A N/A N/A N/A N/A N/A 19.0 ppb (15) N/A 2.0 μg/m3 (2) 4.3 μg/m3 (18) 18.0
 
April 5, 2020, 10 a.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (18) N/A N/A -0.9 μg/m3 (0) 18.0
 
April 5, 2020, 9 a.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (22) N/A 9.0 μg/m3 (8) -0.2 μg/m3 (0) 22.0
 
April 5, 2020, 8 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) -2.1 μg/m3 (0) 25.0
 
April 5, 2020, 7 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) -1.0 μg/m3 (0) 25.0
 
April 5, 2020, 6 a.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) N/A 2.0 μg/m3 (2) 5.5 μg/m3 (23) 25.0
 
April 5, 2020, 5 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) 0.9 μg/m3 (4) 25.0
 
April 5, 2020, 4 a.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) N/A 0.0 μg/m3 (0) 5.8 μg/m3 (24) 26.0
 
April 5, 2020, 3 a.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) N/A 8.0 μg/m3 (7) 3.0 μg/m3 (12) 28.0
 
April 5, 2020, 2 a.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (31) N/A 10.0 μg/m3 (9) 0.6 μg/m3 (2) 31.0
 
April 5, 2020, 1 a.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (32) N/A 7.0 μg/m3 (6) 1.4 μg/m3 (6) 32.0
 
April 5, 2020, midnight N/A N/A N/A N/A N/A N/A 44.0 ppb (34) N/A 10.0 μg/m3 (9) 0.6 μg/m3 (2) 34.0
 
April 4, 2020, 11 p.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (35) N/A -4.0 μg/m3 (0) 0.5 μg/m3 (2) 35.0
 
April 4, 2020, 10 p.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (35) N/A 7.0 μg/m3 (6) 3.7 μg/m3 (15) 35.0
 
April 4, 2020, 9 p.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (35) N/A 3.0 μg/m3 (3) -0.5 μg/m3 (0) 35.0
 
April 4, 2020, 8 p.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (35) N/A 4.0 μg/m3 (4) -2.0 μg/m3 (0) 35.0
 
April 4, 2020, 7 p.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (34) N/A 3.0 μg/m3 (3) 1.2 μg/m3 (5) 34.0
 
April 4, 2020, 6 p.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (33) N/A 5.0 μg/m3 (5) -3.8 μg/m3 (0) 33.0
 
April 4, 2020, 5 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) 3.3 μg/m3 (14) 31.0
 
April 4, 2020, 4 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) -0.6 μg/m3 (0) 25.0
 
April 4, 2020, 3 p.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (21) N/A 20.0 μg/m3 (18) 0.2 μg/m3 (1) 21.0
 
April 4, 2020, 2 p.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (18) N/A 1.0 μg/m3 (1) 5.9 μg/m3 (25) 25.0
 
April 4, 2020, 1 p.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (15) N/A 11.0 μg/m3 (10) 2.1 μg/m3 (9) 15.0
 
April 4, 2020, noon N/A N/A N/A N/A N/A N/A 18.0 ppb (14) N/A 3.0 μg/m3 (3) 4.0 μg/m3 (17) 17.0
 
April 4, 2020, 11 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) 2.4 μg/m3 (10) 15.0
 
April 4, 2020, 10 a.m. N/A N/A N/A N/A N/A N/A 18.0 ppb (14) N/A -1.0 μg/m3 (0) 5.5 μg/m3 (23) 23.0
 
April 4, 2020, 9 a.m. N/A N/A N/A N/A N/A N/A 17.0 ppb (13) N/A -4.0 μg/m3 (0) 3.3 μg/m3 (14) 14.0
 
April 4, 2020, 8 a.m. N/A N/A N/A N/A N/A N/A 18.0 ppb (14) N/A N/A 2.3 μg/m3 (10) 14.0
 
April 4, 2020, 7 a.m. N/A N/A N/A N/A N/A N/A 17.0 ppb (13) N/A N/A 0.8 μg/m3 (3) 13.0
 
April 4, 2020, 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) 3.0 μg/m3 (12) 12.0
 
April 4, 2020, 5 a.m. N/A N/A N/A N/A N/A N/A 18.0 ppb (14) N/A 4.0 μg/m3 (4) 4.5 μg/m3 (19) 19.0
 
April 4, 2020, 4 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) 2.5 μg/m3 (10) 17.0
 
April 4, 2020, 3 a.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (21) N/A 5.0 μg/m3 (5) 1.7 μg/m3 (7) 21.0
 
April 4, 2020, 2 a.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) N/A 2.0 μg/m3 (2) 5.5 μg/m3 (23) 25.0
 
April 4, 2020, 1 a.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (32) N/A 4.0 μg/m3 (4) -0.7 μg/m3 (0) 32.0
 
April 4, 2020, midnight N/A N/A N/A N/A N/A N/A 45.0 ppb (35) N/A 2.0 μg/m3 (2) 0.5 μg/m3 (2) 35.0
 
April 3, 2020, 11 p.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (35) N/A 10.0 μg/m3 (9) -0.6 μg/m3 (0) 35.0
 
April 3, 2020, 10 p.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (34) N/A -4.0 μg/m3 (0) 1.0 μg/m3 (4) 34.0
 
April 3, 2020, 9 p.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (32) N/A 13.0 μg/m3 (12) 2.3 μg/m3 (10) 32.0
 
April 3, 2020, 8 p.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (30) N/A 3.0 μg/m3 (3) 2.4 μg/m3 (10) 30.0
 
April 3, 2020, 7 p.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (29) N/A -2.0 μg/m3 (0) 4.5 μg/m3 (19) 29.0
 
April 3, 2020, 6 p.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) N/A 12.0 μg/m3 (11) 3.1 μg/m3 (13) 28.0
 
April 3, 2020, 5 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A 9.0 μg/m3 (8) 3.5 μg/m3 (15) 28.0
 
April 3, 2020, 4 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A 9.0 μg/m3 (8) 5.5 μg/m3 (23) 28.0
 
April 3, 2020, 3 p.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) N/A N/A -0.9 μg/m3 (0) 26.0
 
April 3, 2020, 2 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) 10.2 μg/m3 (42) 42.0
 
April 3, 2020, 1 p.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (19) N/A 4.0 μg/m3 (4) 0.1 μg/m3 (0) 19.0
 
April 3, 2020, noon N/A N/A N/A N/A N/A N/A 25.0 ppb (19) N/A 3.0 μg/m3 (3) 6.6 μg/m3 (28) 28.0
 
April 3, 2020, 11 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) 7.0 μg/m3 (29) 29.0
 
April 3, 2020, 10 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) 5.8 μg/m3 (24) 24.0
 
April 3, 2020, 9 a.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (18) N/A 7.0 μg/m3 (6) 4.5 μg/m3 (19) 19.0
 
April 3, 2020, 8 a.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (19) N/A N/A 4.5 μg/m3 (19) 19.0
 
April 3, 2020, 7 a.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (20) N/A N/A 0.2 μg/m3 (1) 20.0
 
April 3, 2020, 6 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) 3.3 μg/m3 (14) 21.0
 
April 3, 2020, 5 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) 7.7 μg/m3 (32) 32.0
 
April 3, 2020, 4 a.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) N/A 4.0 μg/m3 (4) 8.8 μg/m3 (37) 37.0
 
April 3, 2020, 3 a.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (25) N/A 2.0 μg/m3 (2) 4.8 μg/m3 (20) 25.0
 
April 3, 2020, 2 a.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) N/A 5.0 μg/m3 (5) 2.0 μg/m3 (8) 27.0
 
April 3, 2020, 1 a.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (30) N/A 8.0 μg/m3 (7) 5.0 μg/m3 (21) 30.0
 
April 3, 2020, midnight N/A N/A N/A N/A N/A N/A 39.0 ppb (30) N/A 5.0 μg/m3 (5) 2.0 μg/m3 (8) 30.0
 
April 2, 2020, 11 p.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (31) N/A 6.0 μg/m3 (5) 3.1 μg/m3 (13) 31.0
 
April 2, 2020, 10 p.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (30) N/A -1.0 μg/m3 (0) 4.6 μg/m3 (19) 30.0
 
April 2, 2020, 9 p.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (30) N/A 6.0 μg/m3 (5) 4.7 μg/m3 (20) 30.0
 
April 2, 2020, 8 p.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (29) N/A 7.0 μg/m3 (6) 3.7 μg/m3 (15) 29.0
 
April 2, 2020, 7 p.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) N/A 3.0 μg/m3 (3) 3.1 μg/m3 (13) 28.0
 
April 2, 2020, 6 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) 3.6 μg/m3 (15) 28.0
 
April 2, 2020, 5 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A 13.0 μg/m3 (12) 4.8 μg/m3 (20) 28.0
 
April 2, 2020, 4 p.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) N/A 7.0 μg/m3 (6) 0.7 μg/m3 (3) 27.0
 
April 2, 2020, 3 p.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) N/A 9.0 μg/m3 (8) 1.4 μg/m3 (6) 26.0
 
April 2, 2020, 2 p.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) N/A 7.0 μg/m3 (6) 0.0 μg/m3 (0) 26.0
 
April 2, 2020, 1 p.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) N/A 7.0 μg/m3 (6) 1.8 μg/m3 (8) 27.0
 
April 2, 2020, noon N/A N/A N/A N/A N/A N/A 35.0 ppb (27) N/A 8.0 μg/m3 (7) 4.9 μg/m3 (20) 27.0
 
April 2, 2020, 11 a.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) N/A 13.0 μg/m3 (12) 17.9 μg/m3 (63) 63.0
 
April 2, 2020, 10 a.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A 27.0 μg/m3 (25) 0.8 μg/m3 (3) 28.0
 
April 2, 2020, 9 a.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) N/A 20.0 μg/m3 (18) -0.4 μg/m3 (0) 27.0
 
April 2, 2020, 8 a.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) N/A 1.0 μg/m3 (1) -1.8 μg/m3 (0) 25.0
 
April 2, 2020, 7 a.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (25) N/A 9.0 μg/m3 (8) -2.0 μg/m3 (0) 25.0
 
April 2, 2020, 6 a.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (25) N/A 7.0 μg/m3 (6) 5.4 μg/m3 (23) 25.0
 
April 2, 2020, 5 a.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) N/A 8.0 μg/m3 (7) 15.0 μg/m3 (56) 56.0
 
April 2, 2020, 4 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) 11.3 μg/m3 (47) 47.0
 
April 2, 2020, 3 a.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) N/A 10.0 μg/m3 (9) 5.1 μg/m3 (21) 26.0
 
April 2, 2020, 2 a.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) N/A 19.0 μg/m3 (17) 4.3 μg/m3 (18) 25.0
 
April 2, 2020, 1 a.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (25) N/A 24.0 μg/m3 (22) 4.1 μg/m3 (17) 25.0