AQSQID: 300750001

Site Name: Broadus

Location: Broadus (Big Powder Riv E Rd), MT

Reporting: True, Located: True

Current AQI: 28.0

Broadus (Big Powder Riv E Rd) MT, US: 45.440295, -105.37028

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
Feb. 14, 2020, 6 a.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A 7.0 μg/m3 (6) 0.4 μg/m3 (2) 28.0
 
Feb. 14, 2020, 5 a.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) N/A 10.0 μg/m3 (9) 1.4 μg/m3 (6) 28.0
 
Feb. 14, 2020, 4 a.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) N/A 4.0 μg/m3 (4) 4.0 μg/m3 (17) 28.0
 
Feb. 14, 2020, 3 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) 3.5 μg/m3 (15) 27.0
 
Feb. 14, 2020, 2 a.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) N/A 9.0 μg/m3 (8) 6.5 μg/m3 (27) 27.0
 
Feb. 14, 2020, 1 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) 7.2 μg/m3 (30) 30.0
 
Feb. 14, 2020, midnight N/A N/A N/A N/A N/A N/A 33.0 ppb (25) N/A 0.0 μg/m3 (0) 4.1 μg/m3 (17) 25.0
 
Feb. 13, 2020, 11 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A 1.0 μg/m3 (1) -0.8 μg/m3 (0) 28.0
 
Feb. 13, 2020, 10 p.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (30) N/A 0.0 μg/m3 (0) 0.4 μg/m3 (2) 30.0
 
Feb. 13, 2020, 9 p.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (30) N/A 2.0 μg/m3 (2) 1.0 μg/m3 (4) 30.0
 
Feb. 13, 2020, 8 p.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (30) N/A 0.0 μg/m3 (0) 2.9 μg/m3 (12) 30.0
 
Feb. 13, 2020, 7 p.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (30) N/A 5.0 μg/m3 (5) -0.1 μg/m3 (0) 30.0
 
Feb. 13, 2020, 6 p.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) N/A -1.0 μg/m3 (0) -3.0 μg/m3 (0) 26.0
 
Feb. 13, 2020, 5 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) -2.9 μg/m3 (0) 23.0
 
Feb. 13, 2020, 4 p.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (20) N/A 27.0 μg/m3 (25) 1.5 μg/m3 (6) 25.0
 
Feb. 13, 2020, 3 p.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (16) N/A 15.0 μg/m3 (14) 6.0 μg/m3 (25) 25.0
 
Feb. 13, 2020, 2 p.m. N/A N/A N/A N/A N/A N/A 16.0 ppb (12) N/A 6.0 μg/m3 (5) 4.0 μg/m3 (17) 17.0
 
Feb. 13, 2020, 1 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) 2.3 μg/m3 (10) 16.0
 
Feb. 13, 2020, noon N/A N/A N/A N/A N/A N/A 21.0 ppb (16) N/A 4.0 μg/m3 (4) 5.2 μg/m3 (22) 22.0
 
Feb. 13, 2020, 11 a.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (19) N/A 0.0 μg/m3 (0) 3.9 μg/m3 (16) 19.0
 
Feb. 13, 2020, 10 a.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (22) N/A 0.0 μg/m3 (0) -0.1 μg/m3 (0) 22.0
 
Feb. 13, 2020, 9 a.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (22) N/A 1.0 μg/m3 (1) 2.4 μg/m3 (10) 22.0
 
Feb. 13, 2020, 8 a.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (22) N/A 8.0 μg/m3 (7) -0.9 μg/m3 (0) 22.0
 
Feb. 13, 2020, 7 a.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) N/A 21.0 μg/m3 (19) 1.9 μg/m3 (8) 23.0
 
Feb. 13, 2020, 6 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) 3.5 μg/m3 (15) 24.0
 
Feb. 13, 2020, 5 a.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (25) N/A 5.0 μg/m3 (5) 2.8 μg/m3 (12) 25.0
 
Feb. 13, 2020, 4 a.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) N/A 9.0 μg/m3 (8) 4.4 μg/m3 (18) 25.0
 
Feb. 13, 2020, 3 a.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) N/A 6.0 μg/m3 (5) 1.2 μg/m3 (5) 26.0
 
Feb. 13, 2020, 2 a.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) N/A 4.0 μg/m3 (4) 3.3 μg/m3 (14) 28.0
 
Feb. 13, 2020, 1 a.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (30) N/A 10.0 μg/m3 (9) 3.6 μg/m3 (15) 30.0
 
Feb. 13, 2020, midnight N/A N/A N/A N/A N/A N/A 37.0 ppb (28) N/A 8.0 μg/m3 (7) 5.0 μg/m3 (21) 28.0
 
Feb. 12, 2020, 11 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) 2.8 μg/m3 (12) 27.0
 
Feb. 12, 2020, 10 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A 2.0 μg/m3 (2) 1.3 μg/m3 (5) 28.0
 
Feb. 12, 2020, 9 p.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (29) N/A 4.0 μg/m3 (4) 1.6 μg/m3 (7) 29.0
 
Feb. 12, 2020, 8 p.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (29) N/A 1.0 μg/m3 (1) -1.6 μg/m3 (0) 29.0
 
Feb. 12, 2020, 7 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A 7.0 μg/m3 (6) 1.6 μg/m3 (7) 28.0
 
Feb. 12, 2020, 6 p.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) N/A 17.0 μg/m3 (15) 5.8 μg/m3 (24) 28.0
 
Feb. 12, 2020, 5 p.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) N/A 13.0 μg/m3 (12) 3.2 μg/m3 (13) 25.0
 
Feb. 12, 2020, 4 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A 15.0 μg/m3 (14) 6.9 μg/m3 (29) 29.0
 
Feb. 12, 2020, 3 p.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (31) N/A 16.0 μg/m3 (15) 9.0 μg/m3 (38) 38.0
 
Feb. 12, 2020, 2 p.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (30) N/A 9.0 μg/m3 (8) 4.1 μg/m3 (17) 30.0
 
Feb. 12, 2020, 1 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) 6.0 μg/m3 (25) 31.0
 
Feb. 12, 2020, noon N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A 6.0 μg/m3 (5) 3.3 μg/m3 (14) 28.0
 
Feb. 12, 2020, 11 a.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) N/A 7.0 μg/m3 (6) 5.3 μg/m3 (22) 28.0
 
Feb. 12, 2020, 10 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) 4.7 μg/m3 (20) 30.0
 
Feb. 12, 2020, 9 a.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (31) N/A 3.0 μg/m3 (3) 3.1 μg/m3 (13) 31.0
 
Feb. 12, 2020, 8 a.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (32) N/A 3.0 μg/m3 (3) 0.4 μg/m3 (2) 32.0
 
Feb. 12, 2020, 7 a.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (32) N/A 12.0 μg/m3 (11) 3.0 μg/m3 (12) 32.0
 
Feb. 12, 2020, 6 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) 2.7 μg/m3 (11) 33.0
 
Feb. 12, 2020, 5 a.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (34) N/A 1.0 μg/m3 (1) 3.4 μg/m3 (14) 34.0
 
Feb. 12, 2020, 4 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) 4.1 μg/m3 (17) 34.0
 
Feb. 12, 2020, 3 a.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (33) N/A 5.0 μg/m3 (5) N/A 33.0
 
Feb. 12, 2020, 2 a.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (33) N/A 3.0 μg/m3 (3) 0.0 μg/m3 (0) 33.0
 
Feb. 12, 2020, 1 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) 5.6 μg/m3 (23) 32.0
 
Feb. 12, 2020, midnight N/A N/A N/A N/A N/A N/A 43.0 ppb (33) N/A 0.0 μg/m3 (0) 7.8 μg/m3 (32) 33.0
 
Feb. 11, 2020, 11 p.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (34) N/A 0.0 μg/m3 (0) 1.5 μg/m3 (6) 34.0
 
Feb. 11, 2020, 10 p.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (34) N/A 0.0 μg/m3 (0) -1.9 μg/m3 (0) 34.0
 
Feb. 11, 2020, 9 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) -0.4 μg/m3 (0) 34.0
 
Feb. 11, 2020, 8 p.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (33) N/A 1.0 μg/m3 (1) -2.0 μg/m3 (0) 33.0
 
Feb. 11, 2020, 7 p.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (33) N/A 0.0 μg/m3 (0) 1.8 μg/m3 (8) 33.0
 
Feb. 11, 2020, 6 p.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (32) N/A 1.0 μg/m3 (1) -2.3 μg/m3 (0) 32.0
 
Feb. 11, 2020, 5 p.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (32) N/A 4.0 μg/m3 (4) -4.2 μg/m3 (0) 32.0
 
Feb. 11, 2020, 4 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) -2.6 μg/m3 (0) 31.0
 
Feb. 11, 2020, 3 p.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (29) N/A 5.0 μg/m3 (5) -1.3 μg/m3 (0) 29.0
 
Feb. 11, 2020, 2 p.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (29) N/A 1.0 μg/m3 (1) 1.6 μg/m3 (7) 29.0
 
Feb. 11, 2020, 1 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) -0.9 μg/m3 (0) 30.0
 
Feb. 11, 2020, noon N/A N/A N/A N/A N/A N/A 39.0 ppb (30) N/A 1.0 μg/m3 (1) -0.2 μg/m3 (0) 30.0
 
Feb. 11, 2020, 11 a.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (29) N/A 0.0 μg/m3 (0) 2.1 μg/m3 (9) 29.0
 
Feb. 11, 2020, 10 a.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (29) N/A 0.0 μg/m3 (0) -1.0 μg/m3 (0) 29.0
 
Feb. 11, 2020, 9 a.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (30) N/A 0.0 μg/m3 (0) -1.3 μg/m3 (0) 30.0
 
Feb. 11, 2020, 8 a.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (29) N/A 2.0 μg/m3 (2) 6.5 μg/m3 (27) 29.0
 
Feb. 11, 2020, 7 a.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (29) N/A 2.0 μg/m3 (2) 4.0 μg/m3 (17) 29.0
 
Feb. 11, 2020, 6 a.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) N/A 4.0 μg/m3 (4) 3.4 μg/m3 (14) 28.0
 
Feb. 11, 2020, 5 a.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) N/A 0.0 μg/m3 (0) 3.4 μg/m3 (14) 28.0
 
Feb. 11, 2020, 4 a.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (30) N/A 2.0 μg/m3 (2) 0.3 μg/m3 (1) 30.0
 
Feb. 11, 2020, 3 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) 1.2 μg/m3 (5) 32.0
 
Feb. 11, 2020, 2 a.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (32) N/A 6.0 μg/m3 (5) 2.5 μg/m3 (10) 32.0
 
Feb. 11, 2020, 1 a.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (32) N/A 6.0 μg/m3 (5) 4.4 μg/m3 (18) 32.0
 
Feb. 11, 2020, midnight N/A N/A N/A N/A N/A N/A 41.0 ppb (32) N/A 6.0 μg/m3 (5) 0.0 μg/m3 (0) 32.0
 
Feb. 10, 2020, 11 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) 1.3 μg/m3 (5) 32.0
 
Feb. 10, 2020, 10 p.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (33) N/A 4.0 μg/m3 (4) 1.9 μg/m3 (8) 33.0
 
Feb. 10, 2020, 9 p.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (33) N/A 2.0 μg/m3 (2) 0.6 μg/m3 (2) 33.0
 
Feb. 10, 2020, 8 p.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (34) N/A 8.0 μg/m3 (7) 3.9 μg/m3 (16) 34.0
 
Feb. 10, 2020, 7 p.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (33) N/A 6.0 μg/m3 (5) 1.4 μg/m3 (6) 33.0
 
Feb. 10, 2020, 6 p.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (33) N/A 2.0 μg/m3 (2) 2.9 μg/m3 (12) 33.0
 
Feb. 10, 2020, 5 p.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (34) N/A 1.0 μg/m3 (1) 2.8 μg/m3 (12) 34.0
 
Feb. 10, 2020, 4 p.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (34) N/A 2.0 μg/m3 (2) 4.2 μg/m3 (18) 34.0
 
Feb. 10, 2020, 3 p.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (33) N/A 6.0 μg/m3 (5) 0.1 μg/m3 (0) 33.0
 
Feb. 10, 2020, 2 p.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (33) N/A 3.0 μg/m3 (3) -0.5 μg/m3 (0) 33.0
 
Feb. 10, 2020, 1 p.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (33) N/A 3.0 μg/m3 (3) 3.5 μg/m3 (15) 33.0
 
Feb. 10, 2020, noon N/A N/A N/A N/A N/A N/A 42.0 ppb (32) N/A 2.0 μg/m3 (2) 3.4 μg/m3 (14) 32.0
 
Feb. 10, 2020, 11 a.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (31) N/A 4.0 μg/m3 (4) 1.6 μg/m3 (7) 31.0
 
Feb. 10, 2020, 10 a.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) N/A 2.0 μg/m3 (2) 3.9 μg/m3 (16) 28.0
 
Feb. 10, 2020, 9 a.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (30) N/A 4.0 μg/m3 (4) 2.1 μg/m3 (9) 30.0
 
Feb. 10, 2020, 8 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) 0.2 μg/m3 (1) 31.0
 
Feb. 10, 2020, 7 a.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (31) N/A 6.0 μg/m3 (5) 1.6 μg/m3 (7) 31.0
 
Feb. 10, 2020, 6 a.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (31) N/A 1.0 μg/m3 (1) 1.1 μg/m3 (5) 31.0
 
Feb. 10, 2020, 5 a.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (32) N/A 3.0 μg/m3 (3) 0.0 μg/m3 (0) 32.0
 
Feb. 10, 2020, 4 a.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (31) N/A 4.0 μg/m3 (4) 2.6 μg/m3 (11) 31.0
 
Feb. 10, 2020, 3 a.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) N/A 2.0 μg/m3 (2) 3.3 μg/m3 (14) 28.0
 
Feb. 10, 2020, 2 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) 3.6 μg/m3 (15) 29.0
 
Feb. 10, 2020, 1 a.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (30) N/A 2.0 μg/m3 (2) 2.6 μg/m3 (11) 30.0
 
Feb. 10, 2020, midnight N/A N/A N/A N/A N/A N/A 40.0 ppb (31) N/A 2.0 μg/m3 (2) -0.7 μg/m3 (0) 31.0
 
Feb. 9, 2020, 11 p.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (31) N/A 2.0 μg/m3 (2) 0.5 μg/m3 (2) 31.0
 
Feb. 9, 2020, 10 p.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (32) N/A -2.0 μg/m3 (0) 2.5 μg/m3 (10) 32.0
 
Feb. 9, 2020, 9 p.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (32) N/A -1.0 μg/m3 (0) -0.4 μg/m3 (0) 32.0
 
Feb. 9, 2020, 8 p.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (32) N/A 1.0 μg/m3 (1) -1.5 μg/m3 (0) 32.0
 
Feb. 9, 2020, 7 p.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (32) N/A 2.0 μg/m3 (2) -1.6 μg/m3 (0) 32.0
 
Feb. 9, 2020, 6 p.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (31) N/A 0.0 μg/m3 (0) 1.7 μg/m3 (7) 31.0
 
Feb. 9, 2020, 5 p.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) N/A 9.0 μg/m3 (8) 0.9 μg/m3 (4) 28.0
 
Feb. 9, 2020, 4 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A 10.0 μg/m3 (9) 0.5 μg/m3 (2) 28.0
 
Feb. 9, 2020, 3 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) 4.1 μg/m3 (17) 28.0
 
Feb. 9, 2020, 2 p.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) N/A 5.0 μg/m3 (5) 4.7 μg/m3 (20) 28.0
 
Feb. 9, 2020, 1 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A 3.0 μg/m3 (3) 1.9 μg/m3 (8) 28.0
 
Feb. 9, 2020, noon N/A N/A N/A N/A N/A N/A 38.0 ppb (29) N/A 4.0 μg/m3 (4) 4.7 μg/m3 (20) 29.0
 
Feb. 9, 2020, 11 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) 3.8 μg/m3 (16) 28.0
 
Feb. 9, 2020, 10 a.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) N/A 4.0 μg/m3 (4) 6.3 μg/m3 (26) 26.0
 
Feb. 9, 2020, 9 a.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) N/A 5.0 μg/m3 (5) 5.1 μg/m3 (21) 23.0
 
Feb. 9, 2020, 8 a.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (22) N/A 9.0 μg/m3 (8) 4.8 μg/m3 (20) 22.0
 
Feb. 9, 2020, 7 a.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) N/A -2.0 μg/m3 (0) 4.1 μg/m3 (17) 26.0
 
Feb. 9, 2020, 6 a.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (29) N/A 4.0 μg/m3 (4) 5.2 μg/m3 (22) 29.0
 
Feb. 9, 2020, 5 a.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A 8.0 μg/m3 (7) 4.7 μg/m3 (20) 28.0
 
Feb. 9, 2020, 4 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) 1.9 μg/m3 (8) 27.0
 
Feb. 9, 2020, 3 a.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) N/A 6.0 μg/m3 (5) 6.9 μg/m3 (29) 29.0
 
Feb. 9, 2020, 2 a.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) N/A 3.0 μg/m3 (3) 1.3 μg/m3 (5) 27.0
 
Feb. 9, 2020, 1 a.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) N/A 6.0 μg/m3 (5) 5.3 μg/m3 (22) 27.0
 
Feb. 9, 2020, midnight N/A N/A N/A N/A N/A N/A 34.0 ppb (26) N/A 4.0 μg/m3 (4) 0.8 μg/m3 (3) 26.0
 
Feb. 8, 2020, 11 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) 1.7 μg/m3 (7) 27.0
 
Feb. 8, 2020, 10 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) 3.3 μg/m3 (14) 24.0
 
Feb. 8, 2020, 9 p.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) N/A 5.0 μg/m3 (5) 2.8 μg/m3 (12) 25.0
 
Feb. 8, 2020, 8 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) 0.1 μg/m3 (0) 25.0
 
Feb. 8, 2020, 7 p.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) N/A 12.0 μg/m3 (11) 1.4 μg/m3 (6) 26.0
 
Feb. 8, 2020, 6 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A 4.0 μg/m3 (4) 0.5 μg/m3 (2) 28.0
 
Feb. 8, 2020, 5 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A 3.0 μg/m3 (3) 1.3 μg/m3 (5) 28.0
 
Feb. 8, 2020, 4 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A -3.0 μg/m3 (0) 3.8 μg/m3 (16) 28.0
 
Feb. 8, 2020, 3 p.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) N/A N/A 0.4 μg/m3 (2) 27.0
 
Feb. 8, 2020, 2 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) 0.2 μg/m3 (1) 25.0
 
Feb. 8, 2020, 1 p.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (25) N/A 3.0 μg/m3 (3) -0.9 μg/m3 (0) 25.0
 
Feb. 8, 2020, noon N/A N/A N/A N/A N/A N/A 31.0 ppb (24) N/A 1.0 μg/m3 (1) 2.1 μg/m3 (9) 24.0
 
Feb. 8, 2020, 11 a.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (22) N/A 1.0 μg/m3 (1) -1.7 μg/m3 (0) 22.0
 
Feb. 8, 2020, 10 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) 4.3 μg/m3 (18) 21.0
 
Feb. 8, 2020, 9 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) 1.2 μg/m3 (5) 20.0
 
Feb. 8, 2020, 8 a.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (22) N/A N/A N/A 22.0
 
Feb. 8, 2020, 7 a.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (25) N/A N/A 174.1 μg/m3 (224) 224.0
 
Feb. 8, 2020, 6 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) N/A 25.0
 
Feb. 8, 2020, 5 a.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) N/A 2.0 μg/m3 (2) 2.7 μg/m3 (11) 23.0
 
Feb. 8, 2020, 4 a.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) N/A 5.0 μg/m3 (5) -0.8 μg/m3 (0) 23.0
 
Feb. 8, 2020, 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) 1.7 μg/m3 (7) 24.0
 
Feb. 8, 2020, 2 a.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (25) N/A 3.0 μg/m3 (3) 3.9 μg/m3 (16) 25.0
 
Feb. 8, 2020, 1 a.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A 18.0 μg/m3 (16) 5.5 μg/m3 (23) 28.0
 
Feb. 8, 2020, midnight N/A N/A N/A N/A N/A N/A 34.0 ppb (26) N/A 13.0 μg/m3 (12) 3.7 μg/m3 (15) 26.0
 
Feb. 7, 2020, 11 p.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) N/A 11.0 μg/m3 (10) 3.8 μg/m3 (16) 28.0
 
Feb. 7, 2020, 10 p.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) N/A 21.0 μg/m3 (19) 0.9 μg/m3 (4) 28.0
 
Feb. 7, 2020, 9 p.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (30) N/A 12.0 μg/m3 (11) 0.3 μg/m3 (1) 30.0
 
Feb. 7, 2020, 8 p.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (29) N/A 6.0 μg/m3 (5) 2.1 μg/m3 (9) 29.0
 
Feb. 7, 2020, 7 p.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (29) N/A 3.0 μg/m3 (3) 2.2 μg/m3 (9) 29.0
 
Feb. 7, 2020, 6 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A 3.0 μg/m3 (3) 2.4 μg/m3 (10) 28.0
 
Feb. 7, 2020, 5 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A 4.0 μg/m3 (4) 1.5 μg/m3 (6) 28.0
 
Feb. 7, 2020, 4 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A 4.0 μg/m3 (4) 2.7 μg/m3 (11) 28.0
 
Feb. 7, 2020, 3 p.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) N/A -1.0 μg/m3 (0) 1.3 μg/m3 (5) 26.0
 
Feb. 7, 2020, 2 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) 2.2 μg/m3 (9) 25.0
 
Feb. 7, 2020, 1 p.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (25) N/A 3.0 μg/m3 (3) 2.9 μg/m3 (12) 25.0
 
Feb. 7, 2020, noon N/A N/A N/A N/A N/A N/A 33.0 ppb (25) N/A 4.0 μg/m3 (4) 0.5 μg/m3 (2) 25.0
 
Feb. 7, 2020, 11 a.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) N/A 4.0 μg/m3 (4) 1.9 μg/m3 (8) 26.0
 
Feb. 7, 2020, 10 a.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) N/A 4.0 μg/m3 (4) 3.6 μg/m3 (15) 26.0
 
Feb. 7, 2020, 9 a.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) N/A -4.0 μg/m3 (0) 2.0 μg/m3 (8) 26.0
 
Feb. 7, 2020, 8 a.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) N/A 2.0 μg/m3 (2) 0.2 μg/m3 (1) 27.0
 
Feb. 7, 2020, 7 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) 3.5 μg/m3 (15) 26.0