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. 28, 2020, 7 a.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A N/A 4.7 μg/m3 (20) 28.0
 
Feb. 28, 2020, 6 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) -0.7 μg/m3 (0) 28.0
 
Feb. 28, 2020, 5 a.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A 2.0 μg/m3 (2) 1.9 μg/m3 (8) 28.0
 
Feb. 28, 2020, 4 a.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (25) N/A 6.0 μg/m3 (5) 0.3 μg/m3 (1) 25.0
 
Feb. 28, 2020, 3 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) 2.4 μg/m3 (10) 18.0
 
Feb. 28, 2020, 2 a.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A 5.0 μg/m3 (5) -0.2 μg/m3 (0) 28.0
 
Feb. 28, 2020, 1 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) 2.1 μg/m3 (9) 31.0
 
Feb. 28, 2020, midnight N/A N/A N/A N/A N/A N/A 41.0 ppb (32) N/A 8.0 μg/m3 (7) 6.7 μg/m3 (28) 32.0
 
Feb. 27, 2020, 11 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) 0.1 μg/m3 (0) 34.0
 
Feb. 27, 2020, 10 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) 4.7 μg/m3 (20) 35.0
 
Feb. 27, 2020, 9 p.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (35) N/A 5.0 μg/m3 (5) 1.1 μg/m3 (5) 35.0
 
Feb. 27, 2020, 8 p.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (35) N/A 2.0 μg/m3 (2) -0.9 μg/m3 (0) 35.0
 
Feb. 27, 2020, 7 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) -0.8 μg/m3 (0) 33.0
 
Feb. 27, 2020, 6 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) 4.3 μg/m3 (18) 31.0
 
Feb. 27, 2020, 5 p.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) N/A 8.0 μg/m3 (7) 2.6 μg/m3 (11) 28.0
 
Feb. 27, 2020, 4 p.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) N/A 8.0 μg/m3 (7) -2.3 μg/m3 (0) 27.0
 
Feb. 27, 2020, 3 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A 0.0 μg/m3 (0) 0.2 μg/m3 (1) 28.0
 
Feb. 27, 2020, 2 p.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) N/A 4.0 μg/m3 (4) 5.6 μg/m3 (23) 26.0
 
Feb. 27, 2020, 1 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) 0.7 μg/m3 (3) 26.0
 
Feb. 27, 2020, noon N/A N/A N/A N/A N/A N/A 37.0 ppb (28) N/A 0.0 μg/m3 (0) 0.6 μg/m3 (2) 28.0
 
Feb. 27, 2020, 11 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) -1.2 μg/m3 (0) 27.0
 
Feb. 27, 2020, 10 a.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (25) N/A 0.0 μg/m3 (0) 1.8 μg/m3 (8) 25.0
 
Feb. 27, 2020, 9 a.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (21) N/A 3.0 μg/m3 (3) 4.2 μg/m3 (18) 21.0
 
Feb. 27, 2020, 8 a.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (22) N/A 11.0 μg/m3 (10) 1.6 μg/m3 (7) 22.0
 
Feb. 27, 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) 1.5 μg/m3 (6) 25.0
 
Feb. 27, 2020, 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) 2.4 μg/m3 (10) 20.0
 
Feb. 27, 2020, 5 a.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (18) N/A 9.0 μg/m3 (8) 1.4 μg/m3 (6) 18.0
 
Feb. 27, 2020, 4 a.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) N/A 10.0 μg/m3 (9) 3.3 μg/m3 (14) 25.0
 
Feb. 27, 2020, 3 a.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (22) N/A 22.0 μg/m3 (20) 3.1 μg/m3 (13) 22.0
 
Feb. 27, 2020, 2 a.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) N/A 27.0 μg/m3 (25) 5.3 μg/m3 (22) 25.0
 
Feb. 27, 2020, 1 a.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A 78.0 μg/m3 (62) 5.3 μg/m3 (22) 62.0
 
Feb. 27, 2020, midnight N/A N/A N/A N/A N/A N/A 38.0 ppb (29) N/A 103.0 μg/m3 (74) 4.6 μg/m3 (19) 74.0
 
Feb. 26, 2020, 11 p.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (32) N/A 66.0 μg/m3 (56) 7.4 μg/m3 (31) 56.0
 
Feb. 26, 2020, 10 p.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (32) N/A 58.0 μg/m3 (52) 3.9 μg/m3 (16) 52.0
 
Feb. 26, 2020, 9 p.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (33) N/A 24.0 μg/m3 (22) 2.2 μg/m3 (9) 33.0
 
Feb. 26, 2020, 8 p.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (33) N/A 14.0 μg/m3 (13) 4.6 μg/m3 (19) 33.0
 
Feb. 26, 2020, 7 p.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A
Feb. 26, 2020, 6 p.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A
Feb. 26, 2020, 5 p.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A
Feb. 26, 2020, 4 p.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A
Feb. 26, 2020, 3 p.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) N/A -4.0 μg/m3 (0) 2.9 μg/m3 (12) 27.0
 
Feb. 26, 2020, 2 p.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) N/A 3.0 μg/m3 (3) -1.2 μg/m3 (0) 27.0
 
Feb. 26, 2020, 1 p.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) N/A 2.0 μg/m3 (2) 3.8 μg/m3 (16) 27.0
 
Feb. 26, 2020, noon N/A N/A N/A N/A N/A N/A 33.0 ppb (25) N/A 0.0 μg/m3 (0) 0.6 μg/m3 (2) 25.0
 
Feb. 26, 2020, 11 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) 4.1 μg/m3 (17) 25.0
 
Feb. 26, 2020, 10 a.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 (0) 27.0
 
Feb. 26, 2020, 9 a.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) N/A 8.0 μg/m3 (7) 1.2 μg/m3 (5) 27.0
 
Feb. 26, 2020, 8 a.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 (0) 27.0
 
Feb. 26, 2020, 7 a.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) N/A 4.0 μg/m3 (4) 0.0 μg/m3 (0) 27.0
 
Feb. 26, 2020, 6 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) 0.1 μg/m3 (0) 27.0
 
Feb. 26, 2020, 5 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) -0.5 μg/m3 (0) 27.0
 
Feb. 26, 2020, 4 a.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) N/A 9.0 μg/m3 (8) -0.5 μg/m3 (0) 26.0
 
Feb. 26, 2020, 3 a.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) N/A 33.0 μg/m3 (30) 6.9 μg/m3 (29) 30.0
 
Feb. 26, 2020, 2 a.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) N/A N/A 4.2 μg/m3 (18) 25.0
 
Feb. 26, 2020, 1 a.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (29) N/A 110.0 μg/m3 (78) 8.8 μg/m3 (37) 78.0
 
Feb. 26, 2020, midnight N/A N/A N/A N/A N/A N/A 39.0 ppb (30) N/A 63.0 μg/m3 (54) 1.3 μg/m3 (5) 54.0
 
Feb. 25, 2020, 11 p.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (34) N/A 13.0 μg/m3 (12) 2.0 μg/m3 (8) 34.0
 
Feb. 25, 2020, 10 p.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (34) N/A 52.0 μg/m3 (47) 4.4 μg/m3 (18) 47.0
 
Feb. 25, 2020, 9 p.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (34) N/A 30.0 μg/m3 (27) 3.4 μg/m3 (14) 34.0
 
Feb. 25, 2020, 8 p.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (34) N/A 51.0 μg/m3 (46) 2.9 μg/m3 (12) 46.0
 
Feb. 25, 2020, 7 p.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (35) N/A 28.0 μg/m3 (25) 4.8 μg/m3 (20) 35.0
 
Feb. 25, 2020, 6 p.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (35) N/A 16.0 μg/m3 (15) 1.4 μg/m3 (6) 35.0
 
Feb. 25, 2020, 5 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) 3.7 μg/m3 (15) 33.0
 
Feb. 25, 2020, 4 p.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (32) N/A 2.0 μg/m3 (2) 2.2 μg/m3 (9) 32.0
 
Feb. 25, 2020, 3 p.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (32) N/A 3.0 μg/m3 (3) 1.1 μg/m3 (5) 32.0
 
Feb. 25, 2020, 2 p.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (33) N/A 7.0 μg/m3 (6) 1.3 μg/m3 (5) 33.0
 
Feb. 25, 2020, 1 p.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (33) N/A 8.0 μg/m3 (7) 4.2 μg/m3 (18) 33.0
 
Feb. 25, 2020, noon N/A N/A N/A N/A N/A N/A 42.0 ppb (32) N/A 10.0 μg/m3 (9) 4.2 μg/m3 (18) 32.0
 
Feb. 25, 2020, 11 a.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (32) N/A 13.0 μg/m3 (12) 5.2 μg/m3 (22) 32.0
 
Feb. 25, 2020, 10 a.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (32) N/A 25.0 μg/m3 (23) 6.0 μg/m3 (25) 32.0
 
Feb. 25, 2020, 9 a.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (32) N/A 22.0 μg/m3 (20) 5.2 μg/m3 (22) 32.0
 
Feb. 25, 2020, 8 a.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (31) N/A 26.0 μg/m3 (24) 8.4 μg/m3 (35) 35.0
 
Feb. 25, 2020, 7 a.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (30) N/A 30.0 μg/m3 (27) 5.3 μg/m3 (22) 30.0
 
Feb. 25, 2020, 6 a.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (30) N/A 28.0 μg/m3 (25) 4.7 μg/m3 (20) 30.0
 
Feb. 25, 2020, 5 a.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (29) N/A 17.0 μg/m3 (15) 1.9 μg/m3 (8) 29.0
 
Feb. 25, 2020, 4 a.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (30) N/A 13.0 μg/m3 (12) 5.2 μg/m3 (22) 30.0
 
Feb. 25, 2020, 3 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) 4.5 μg/m3 (19) 31.0
 
Feb. 25, 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) 2.7 μg/m3 (11) 31.0
 
Feb. 25, 2020, 1 a.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (31) N/A 15.0 μg/m3 (14) 5.3 μg/m3 (22) 31.0
 
Feb. 25, 2020, midnight N/A N/A N/A N/A N/A N/A 41.0 ppb (32) N/A 12.0 μg/m3 (11) 4.6 μg/m3 (19) 32.0
 
Feb. 24, 2020, 11 p.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (31) N/A 8.0 μg/m3 (7) 7.1 μg/m3 (30) 31.0
 
Feb. 24, 2020, 10 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) 1.3 μg/m3 (5) 32.0
 
Feb. 24, 2020, 9 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) 3.8 μg/m3 (16) 32.0
 
Feb. 24, 2020, 8 p.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (32) N/A 2.0 μg/m3 (2) 2.6 μg/m3 (11) 32.0
 
Feb. 24, 2020, 7 p.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (31) N/A 10.0 μg/m3 (9) 0.5 μg/m3 (2) 31.0
 
Feb. 24, 2020, 6 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) 1.1 μg/m3 (5) 31.0
 
Feb. 24, 2020, 5 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) 2.2 μg/m3 (9) 32.0
 
Feb. 24, 2020, 4 p.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (32) N/A 0.0 μg/m3 (0) 3.3 μg/m3 (14) 32.0
 
Feb. 24, 2020, 3 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) 1.0 μg/m3 (4) 32.0
 
Feb. 24, 2020, 2 p.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (32) N/A 5.0 μg/m3 (5) 0.1 μg/m3 (0) 32.0
 
Feb. 24, 2020, 1 p.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (33) N/A 13.0 μg/m3 (12) 0.3 μg/m3 (1) 33.0
 
Feb. 24, 2020, noon N/A N/A N/A N/A N/A N/A 42.0 ppb (32) N/A 9.0 μg/m3 (8) -0.8 μg/m3 (0) 32.0
 
Feb. 24, 2020, 11 a.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) N/A 6.0 μg/m3 (5) 5.1 μg/m3 (21) 24.0
 
Feb. 24, 2020, 10 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) 2.9 μg/m3 (12) 21.0
 
Feb. 24, 2020, 9 a.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (22) N/A 4.0 μg/m3 (4) 1.6 μg/m3 (7) 22.0
 
Feb. 24, 2020, 8 a.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (25) N/A 4.0 μg/m3 (4) 3.7 μg/m3 (15) 25.0
 
Feb. 24, 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 (2) 0.3 μg/m3 (1) 26.0
 
Feb. 24, 2020, 6 a.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A 1.0 μg/m3 (1) -2.8 μg/m3 (0) 28.0
 
Feb. 24, 2020, 5 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) 2.7 μg/m3 (11) 29.0
 
Feb. 24, 2020, 4 a.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
 
Feb. 24, 2020, 3 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) 2.6 μg/m3 (11) 31.0
 
Feb. 24, 2020, 2 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) 3.2 μg/m3 (13) 31.0
 
Feb. 24, 2020, 1 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) 2.1 μg/m3 (9) 32.0
 
Feb. 24, 2020, midnight N/A N/A N/A N/A N/A N/A 40.0 ppb (31) N/A 4.0 μg/m3 (4) 7.2 μg/m3 (30) 31.0
 
Feb. 23, 2020, 11 p.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (32) N/A 3.0 μg/m3 (3) -1.2 μg/m3 (0) 32.0
 
Feb. 23, 2020, 10 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) 1.1 μg/m3 (5) 34.0
 
Feb. 23, 2020, 9 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) 2.2 μg/m3 (9) 35.0
 
Feb. 23, 2020, 8 p.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (35) N/A 2.0 μg/m3 (2) -0.6 μg/m3 (0) 35.0
 
Feb. 23, 2020, 7 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) -0.3 μg/m3 (0) 35.0
 
Feb. 23, 2020, 6 p.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (32) N/A 14.0 μg/m3 (13) 2.4 μg/m3 (10) 32.0
 
Feb. 23, 2020, 5 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) 1.8 μg/m3 (8) 31.0
 
Feb. 23, 2020, 4 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) 5.7 μg/m3 (24) 28.0
 
Feb. 23, 2020, 3 p.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (19) N/A 8.0 μg/m3 (7) 4.5 μg/m3 (19) 19.0
 
Feb. 23, 2020, 2 p.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (22) N/A 4.0 μg/m3 (4) 2.6 μg/m3 (11) 22.0
 
Feb. 23, 2020, 1 p.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (18) N/A 6.0 μg/m3 (5) 4.1 μg/m3 (17) 18.0
 
Feb. 23, 2020, noon N/A N/A N/A N/A N/A N/A 26.0 ppb (20) N/A 6.0 μg/m3 (5) 5.8 μg/m3 (24) 24.0
 
Feb. 23, 2020, 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) 0.1 μg/m3 (0) 24.0
 
Feb. 23, 2020, 10 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) 2.4 μg/m3 (10) 27.0
 
Feb. 23, 2020, 9 a.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A 6.0 μg/m3 (5) 2.8 μg/m3 (12) 28.0
 
Feb. 23, 2020, 8 a.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) N/A 9.0 μg/m3 (8) 2.3 μg/m3 (10) 28.0
 
Feb. 23, 2020, 7 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) 4.9 μg/m3 (20) 28.0
 
Feb. 23, 2020, 6 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) 2.6 μg/m3 (11) 32.0
 
Feb. 23, 2020, 5 a.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (32) N/A 6.0 μg/m3 (5) 2.6 μg/m3 (11) 32.0
 
Feb. 23, 2020, 4 a.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (34) N/A 6.0 μg/m3 (5) 2.1 μg/m3 (9) 34.0
 
Feb. 23, 2020, 3 a.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (34) N/A 6.0 μg/m3 (5) 3.6 μg/m3 (15) 34.0
 
Feb. 23, 2020, 2 a.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (33) N/A 12.0 μg/m3 (11) 4.7 μg/m3 (20) 33.0
 
Feb. 23, 2020, 1 a.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (34) N/A 13.0 μg/m3 (12) 0.5 μg/m3 (2) 34.0
 
Feb. 23, 2020, midnight N/A N/A N/A N/A N/A N/A 46.0 ppb (35) N/A 31.0 μg/m3 (28) -4.5 μg/m3 (0) 35.0
 
Feb. 22, 2020, 11 p.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (38) N/A 36.0 μg/m3 (33) 4.9 μg/m3 (20) 38.0
 
Feb. 22, 2020, 10 p.m. N/A N/A N/A N/A N/A N/A 51.0 ppb (39) N/A 39.0 μg/m3 (35) 4.6 μg/m3 (19) 39.0
 
Feb. 22, 2020, 9 p.m. N/A N/A N/A N/A N/A N/A 51.0 ppb (39) N/A 44.0 μg/m3 (40) 5.2 μg/m3 (22) 40.0
 
Feb. 22, 2020, 8 p.m. N/A N/A N/A N/A N/A N/A 50.0 ppb (38) N/A 19.0 μg/m3 (17) 0.0 μg/m3 (0) 38.0
 
Feb. 22, 2020, 7 p.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (38) N/A 12.0 μg/m3 (11) 3.7 μg/m3 (15) 38.0
 
Feb. 22, 2020, 6 p.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (37) N/A 10.0 μg/m3 (9) -0.3 μg/m3 (0) 37.0
 
Feb. 22, 2020, 5 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) 1.1 μg/m3 (5) 35.0
 
Feb. 22, 2020, 4 p.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (34) N/A 4.0 μg/m3 (4) 5.5 μg/m3 (23) 34.0
 
Feb. 22, 2020, 3 p.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (32) N/A 2.0 μg/m3 (2) 5.4 μg/m3 (23) 32.0
 
Feb. 22, 2020, 2 p.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (32) N/A 7.0 μg/m3 (6) 2.8 μg/m3 (12) 32.0
 
Feb. 22, 2020, 1 p.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (31) N/A 5.0 μg/m3 (5) 0.9 μg/m3 (4) 31.0
 
Feb. 22, 2020, noon N/A N/A N/A N/A N/A N/A 40.0 ppb (31) N/A 4.0 μg/m3 (4) 4.8 μg/m3 (20) 31.0
 
Feb. 22, 2020, 11 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) 0.0 μg/m3 (0) 32.0
 
Feb. 22, 2020, 10 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) 3.3 μg/m3 (14) 32.0
 
Feb. 22, 2020, 9 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) -0.5 μg/m3 (0) 32.0
 
Feb. 22, 2020, 8 a.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (32) N/A 4.0 μg/m3 (4) 2.0 μg/m3 (8) 32.0
 
Feb. 22, 2020, 7 a.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (31) N/A 7.0 μg/m3 (6) 1.3 μg/m3 (5) 31.0
 
Feb. 22, 2020, 6 a.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (33) N/A 4.0 μg/m3 (4) 1.6 μg/m3 (7) 33.0
 
Feb. 22, 2020, 5 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) 0.3 μg/m3 (1) 32.0
 
Feb. 22, 2020, 4 a.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (34) N/A 4.0 μg/m3 (4) 3.4 μg/m3 (14) 34.0
 
Feb. 22, 2020, 3 a.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (33) N/A 6.0 μg/m3 (5) 5.4 μg/m3 (23) 33.0
 
Feb. 22, 2020, 2 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) 4.4 μg/m3 (18) 31.0
 
Feb. 22, 2020, 1 a.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (33) N/A 13.0 μg/m3 (12) 8.2 μg/m3 (34) 34.0
 
Feb. 22, 2020, midnight N/A N/A N/A N/A N/A N/A 44.0 ppb (34) N/A 14.0 μg/m3 (13) 5.7 μg/m3 (24) 34.0
 
Feb. 21, 2020, 11 p.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (35) N/A 18.0 μg/m3 (16) -0.8 μg/m3 (0) 35.0
 
Feb. 21, 2020, 10 p.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (37) N/A 10.0 μg/m3 (9) 1.2 μg/m3 (5) 37.0
 
Feb. 21, 2020, 9 p.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (37) N/A 6.0 μg/m3 (5) 2.5 μg/m3 (10) 37.0
 
Feb. 21, 2020, 8 p.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (37) N/A 10.0 μg/m3 (9) 1.7 μg/m3 (7) 37.0
 
Feb. 21, 2020, 7 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) 1.2 μg/m3 (5) 35.0
 
Feb. 21, 2020, 6 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) 1.5 μg/m3 (6) 33.0
 
Feb. 21, 2020, 5 p.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (33) N/A 14.0 μg/m3 (13) 3.1 μg/m3 (13) 33.0
 
Feb. 21, 2020, 4 p.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (32) N/A 18.0 μg/m3 (16) -0.7 μg/m3 (0) 32.0
 
Feb. 21, 2020, 3 p.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (30) N/A 10.0 μg/m3 (9) 4.0 μg/m3 (17) 30.0
 
Feb. 21, 2020, 2 p.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (31) N/A 8.0 μg/m3 (7) 1.1 μg/m3 (5) 31.0
 
Feb. 21, 2020, 1 p.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (32) N/A 3.0 μg/m3 (3) 3.1 μg/m3 (13) 32.0
 
Feb. 21, 2020, noon N/A N/A N/A N/A N/A N/A 40.0 ppb (31) N/A 7.0 μg/m3 (6) 1.9 μg/m3 (8) 31.0
 
Feb. 21, 2020, 11 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) 4.5 μg/m3 (19) 33.0
 
Feb. 21, 2020, 10 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) 4.1 μg/m3 (17) 33.0
 
Feb. 21, 2020, 9 a.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (32) N/A 5.0 μg/m3 (5) 3.0 μg/m3 (12) 32.0
 
Feb. 21, 2020, 8 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) 4.9 μg/m3 (20) 32.0