AQSQID: 300750001

Site Name: Broadus

Location: Powder River Co, MT

Reporting: True, Located: True

Current AQI: 47.0

Powder River Co MT, US: 45.440295, -105.37028

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
July 21, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) N/A 52.0 μg/m3 (47) -1.1 μg/m3 (0) 47.0
 
July 21, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) N/A 69.0 μg/m3 (57) 19.1 μg/m3 (65) 65.0
 
July 21, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (31) N/A 28.0 μg/m3 (25) 15.8 μg/m3 (58) 58.0
 
July 21, 2019, midnight N/A N/A N/A N/A N/A N/A 41.0 ppb (32) N/A 70.0 μg/m3 (58) 25.7 μg/m3 (79) 79.0
 
July 20, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (32) N/A 69.0 μg/m3 (57) 12.9 μg/m3 (52) 57.0
 
July 20, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (33) N/A 68.0 μg/m3 (56) 11.1 μg/m3 (46) 56.0
 
July 20, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 35.0 μg/m3 (32) 13.3 μg/m3 (53) 53.0
 
July 20, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 38.0 μg/m3 (35) 17.0 μg/m3 (61) 61.0
 
July 20, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 42.0 μg/m3 (38) 17.8 μg/m3 (62) 62.0
 
July 20, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 58.0 μg/m3 (52) 14.5 μg/m3 (55) 55.0
 
July 20, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 66.0 μg/m3 (56) 9.0 μg/m3 (38) 56.0
 
July 20, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (31) N/A 63.0 μg/m3 (54) 5.3 μg/m3 (22) 54.0
 
July 20, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (29) N/A 39.0 μg/m3 (35) 8.5 μg/m3 (35) 35.0
 
July 20, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) N/A 31.0 μg/m3 (28) 8.1 μg/m3 (34) 34.0
 
July 20, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (25) N/A 33.0 μg/m3 (30) 6.9 μg/m3 (29) 30.0
 
July 20, 2019, noon N/A N/A N/A N/A N/A N/A 30.0 ppb (23) N/A 21.0 μg/m3 (19) 6.3 μg/m3 (26) 26.0
 
July 20, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) N/A 10.0 μg/m3 (9) 2.1 μg/m3 (9) 24.0
 
July 20, 2019, 10 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) 4.1 μg/m3 (17) 25.0
 
July 20, 2019, 9 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) 8.1 μg/m3 (34) 34.0
 
July 20, 2019, 8 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) 0.9 μg/m3 (4) 25.0
 
July 20, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) N/A 0.0 μg/m3 (0) -1.3 μg/m3 (0) 25.0
 
July 20, 2019, 6 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) N/A 24.0
 
July 20, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) N/A 20.0 μg/m3 (18) 4.1 μg/m3 (17) 23.0
 
July 20, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) N/A 25.0 μg/m3 (23) 5.5 μg/m3 (23) 23.0
 
July 20, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (25) N/A 45.0 μg/m3 (41) 8.6 μg/m3 (36) 41.0
 
July 20, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) N/A 110.0 μg/m3 (78) 17.5 μg/m3 (62) 78.0
 
July 20, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (29) N/A 65.0 μg/m3 (55) 14.3 μg/m3 (55) 55.0
 
July 20, 2019, midnight N/A N/A N/A N/A N/A N/A 40.0 ppb (31) N/A 51.0 μg/m3 (46) 10.4 μg/m3 (43) 46.0
 
July 19, 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) 8.1 μg/m3 (34) 34.0
 
July 19, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (32) N/A 20.0 μg/m3 (18) 12.4 μg/m3 (51) 51.0
 
July 19, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (32) N/A 27.0 μg/m3 (25) 9.1 μg/m3 (38) 38.0
 
July 19, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (31) N/A 24.0 μg/m3 (22) 6.3 μg/m3 (26) 31.0
 
July 19, 2019, 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) 5.5 μg/m3 (23) 31.0
 
July 19, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) N/A 20.0 μg/m3 (18) 10.6 μg/m3 (44) 44.0
 
July 19, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A 22.0 μg/m3 (20) 12.3 μg/m3 (51) 51.0
 
July 19, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) N/A 21.0 μg/m3 (19) 6.9 μg/m3 (29) 29.0
 
July 19, 2019, 3 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) 2.6 μg/m3 (11) 26.0
 
July 19, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (22) N/A 17.0 μg/m3 (15) 3.2 μg/m3 (13) 22.0
 
July 19, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (20) N/A 19.0 μg/m3 (17) 5.3 μg/m3 (22) 22.0
 
July 19, 2019, noon N/A N/A N/A N/A N/A N/A 20.0 ppb (15) N/A 13.0 μg/m3 (12) 7.3 μg/m3 (30) 30.0
 
July 19, 2019, 11 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) -3.9 μg/m3 (0) 18.0
 
July 19, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (18) N/A 8.0 μg/m3 (7) -1.3 μg/m3 (0) 18.0
 
July 19, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A 19.0 ppb (15) N/A 9.0 μg/m3 (8) 1.5 μg/m3 (6) 15.0
 
July 19, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (18) N/A -1.0 μg/m3 (0) 0.0 μg/m3 (0) 18.0
 
July 19, 2019, 7 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) N/A 21.0
 
July 19, 2019, 6 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) N/A 25.0
 
July 19, 2019, 5 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) 3.0 μg/m3 (12) 22.0
 
July 19, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (19) N/A 57.0 μg/m3 (51) 11.7 μg/m3 (49) 51.0
 
July 19, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (18) N/A 57.0 μg/m3 (51) 8.9 μg/m3 (37) 51.0
 
July 19, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) N/A 51.0 μg/m3 (46) 12.5 μg/m3 (51) 51.0
 
July 19, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) N/A 48.0 μg/m3 (44) 16.2 μg/m3 (59) 59.0
 
July 19, 2019, midnight N/A N/A N/A N/A N/A N/A 42.0 ppb (32) N/A 72.0 μg/m3 (58) 9.5 μg/m3 (40) 58.0
 
July 18, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (34) N/A 58.0 μg/m3 (52) 0.4 μg/m3 (2) 52.0
 
July 18, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (35) N/A 39.0 μg/m3 (35) 8.0 μg/m3 (33) 35.0
 
July 18, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (35) N/A 65.0 μg/m3 (55) 10.9 μg/m3 (45) 55.0
 
July 18, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (35) N/A 42.0 μg/m3 (38) 13.5 μg/m3 (53) 53.0
 
July 18, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (36) N/A 38.0 μg/m3 (35) 8.0 μg/m3 (33) 36.0
 
July 18, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (35) N/A 54.0 μg/m3 (49) 11.1 μg/m3 (46) 49.0
 
July 18, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (35) N/A 20.0 μg/m3 (18) 0.9 μg/m3 (4) 35.0
 
July 18, 2019, 4 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) N/A 32.0
 
July 18, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (29) N/A 20.0 μg/m3 (18) 3.0 μg/m3 (12) 29.0
 
July 18, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (15) N/A 39.0 μg/m3 (35) 16.6 μg/m3 (60) 60.0
 
July 18, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 12.0 ppb (9) N/A 52.0 μg/m3 (47) 18.1 μg/m3 (63) 63.0
 
July 18, 2019, noon N/A N/A N/A N/A N/A N/A 8.0 ppb (6) N/A 41.0 μg/m3 (37) 2.1 μg/m3 (9) 37.0
 
July 18, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 8.0 ppb (6) N/A 10.0 μg/m3 (9) -3.6 μg/m3 (0) 9.0
 
July 18, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A 11.0 ppb (8) N/A 14.0 μg/m3 (13) 1.9 μg/m3 (8) 13.0
 
July 18, 2019, 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) 0.0 μg/m3 (0) 12.0
 
July 18, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 13.0 ppb (10) N/A 18.0 μg/m3 (16) 5.7 μg/m3 (24) 24.0
 
July 18, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 14.0 ppb (11) N/A 18.0 μg/m3 (16) 0.7 μg/m3 (3) 16.0
 
July 18, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (15) N/A 9.0 μg/m3 (8) -4.3 μg/m3 (0) 15.0
 
July 18, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (18) N/A 13.0 μg/m3 (12) 3.0 μg/m3 (12) 18.0
 
July 18, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (20) N/A 17.0 μg/m3 (15) -2.8 μg/m3 (0) 20.0
 
July 18, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (22) N/A 26.0 μg/m3 (24) 5.0 μg/m3 (21) 24.0
 
July 18, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (25) N/A 25.0 μg/m3 (23) -3.1 μg/m3 (0) 25.0
 
July 18, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) N/A 52.0 μg/m3 (47) 15.7 μg/m3 (58) 58.0
 
July 18, 2019, midnight N/A N/A N/A N/A N/A N/A 38.0 ppb (29) N/A 71.0 μg/m3 (58) 11.9 μg/m3 (50) 58.0
 
July 17, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (35) N/A 20.0 μg/m3 (18) 3.3 μg/m3 (14) 35.0
 
July 17, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (38) N/A 4.0 μg/m3 (4) 1.2 μg/m3 (5) 38.0
 
July 17, 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) 9.1 μg/m3 (38) 38.0
 
July 17, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (36) N/A 4.0 μg/m3 (4) 4.1 μg/m3 (17) 36.0
 
July 17, 2019, 7 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) 2.9 μg/m3 (12) 35.0
 
July 17, 2019, 6 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) 8.3 μg/m3 (35) 35.0
 
July 17, 2019, 5 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) N/A 35.0
 
July 17, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (34) N/A 17.0 μg/m3 (15) -0.5 μg/m3 (0) 34.0
 
July 17, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) N/A -1.0 μg/m3 (0) 10.0 μg/m3 (42) 42.0
 
July 17, 2019, 2 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) 2.0 μg/m3 (8) 22.0
 
July 17, 2019, 1 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) 15.0 μg/m3 (56) 56.0
 
July 17, 2019, noon N/A N/A N/A N/A N/A N/A 19.0 ppb (15) N/A 13.0 μg/m3 (12) 4.5 μg/m3 (19) 19.0
 
July 17, 2019, 11 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) 1.1 μg/m3 (5) 11.0
 
July 17, 2019, 10 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) -0.1 μg/m3 (0) 15.0
 
July 17, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (15) N/A 12.0 μg/m3 (11) 0.8 μg/m3 (3) 15.0
 
July 17, 2019, 8 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) 8.3 μg/m3 (35) 35.0
 
July 17, 2019, 7 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) 22.0 μg/m3 (71) 71.0
 
July 17, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (20) N/A 11.0 μg/m3 (10) 1.1 μg/m3 (5) 20.0
 
July 17, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) N/A 11.0 μg/m3 (10) 4.5 μg/m3 (19) 23.0
 
July 17, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (21) N/A 15.0 μg/m3 (14) 7.0 μg/m3 (29) 29.0
 
July 17, 2019, 3 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) 25.9 μg/m3 (80) 80.0
 
July 17, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) N/A 30.0 μg/m3 (27) 30.3 μg/m3 (89) 89.0
 
July 17, 2019, 1 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) 3.7 μg/m3 (15) 32.0
 
July 17, 2019, midnight N/A N/A N/A N/A N/A N/A 41.0 ppb (32) N/A 65.0 μg/m3 (55) 15.4 μg/m3 (57) 57.0
 
July 16, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (33) N/A 45.0 μg/m3 (41) 18.0 μg/m3 (63) 63.0
 
July 16, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 50.0 ppb (38) N/A 21.0 μg/m3 (19) 5.9 μg/m3 (25) 38.0
 
July 16, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 51.0 ppb (39) N/A 9.0 μg/m3 (8) 4.2 μg/m3 (18) 39.0
 
July 16, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 53.0 ppb (41) N/A 5.0 μg/m3 (5) 1.3 μg/m3 (5) 41.0
 
July 16, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 52.0 ppb (40) N/A 12.0 μg/m3 (11) 8.7 μg/m3 (36) 40.0
 
July 16, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (38) N/A 17.0 μg/m3 (15) 6.6 μg/m3 (28) 38.0
 
July 16, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (37) N/A 23.0 μg/m3 (21) 3.3 μg/m3 (14) 37.0
 
July 16, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (36) N/A 34.0 μg/m3 (31) 5.8 μg/m3 (24) 36.0
 
July 16, 2019, 3 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) 7.0 μg/m3 (29) 29.0
 
July 16, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) N/A 11.0 μg/m3 (10) 4.9 μg/m3 (20) 24.0
 
July 16, 2019, 1 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) 6.9 μg/m3 (29) 29.0
 
July 16, 2019, noon N/A N/A N/A N/A N/A N/A 21.0 ppb (16) N/A 16.0 μg/m3 (15) 4.8 μg/m3 (20) 20.0
 
July 16, 2019, 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) -1.1 μg/m3 (0) 15.0
 
July 16, 2019, 10 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) N/A 20.0
 
July 16, 2019, 9 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) 0.7 μg/m3 (3) 17.0
 
July 16, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (19) N/A 1.0 μg/m3 (1) 8.3 μg/m3 (35) 35.0
 
July 16, 2019, 7 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) 24.1 μg/m3 (76) 76.0
 
July 16, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (32) N/A 8.0 μg/m3 (7) 3.0 μg/m3 (12) 32.0
 
July 16, 2019, 5 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) 5.8 μg/m3 (24) 32.0
 
July 16, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (35) N/A 12.0 μg/m3 (11) -0.3 μg/m3 (0) 35.0
 
July 16, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (37) N/A 8.0 μg/m3 (7) -4.0 μg/m3 (0) 37.0
 
July 16, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) N/A 11.0 μg/m3 (10) 2.1 μg/m3 (9) 28.0
 
July 16, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) N/A 36.0 μg/m3 (33) 14.6 μg/m3 (56) 56.0
 
July 16, 2019, midnight N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A 19.0 μg/m3 (17) 2.1 μg/m3 (9) 28.0
 
July 15, 2019, 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) 0.6 μg/m3 (2) 32.0
 
July 15, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (34) N/A 56.0 μg/m3 (50) -3.2 μg/m3 (0) 50.0
 
July 15, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (32) N/A 25.0 μg/m3 (23) 8.2 μg/m3 (34) 34.0
 
July 15, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (31) N/A 11.0 μg/m3 (10) 6.2 μg/m3 (26) 31.0
 
July 15, 2019, 7 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) -3.5 μg/m3 (0) 32.0
 
July 15, 2019, 6 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) 8.7 μg/m3 (36) 36.0
 
July 15, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) N/A 17.0 μg/m3 (15) 12.0 μg/m3 (50) 50.0
 
July 15, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) N/A 10.0 μg/m3 (9) 11.6 μg/m3 (48) 48.0
 
July 15, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) N/A 12.0 μg/m3 (11) 6.2 μg/m3 (26) 26.0
 
July 15, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 16.0 μg/m3 (15) 5.6 μg/m3 (23) 23.0
 
July 15, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 16.0 μg/m3 (15) 13.3 μg/m3 (53) 53.0
 
July 15, 2019, noon N/A N/A N/A N/A N/A N/A N/A N/A 13.0 μg/m3 (12) 3.7 μg/m3 (15) 15.0
 
July 15, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (18) N/A 1.0 μg/m3 (1) -2.3 μg/m3 (0) 18.0
 
July 15, 2019, 10 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) 4.3 μg/m3 (18) 24.0
 
July 15, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) N/A 10.0 μg/m3 (9) 1.1 μg/m3 (5) 23.0
 
July 15, 2019, 8 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) 6.3 μg/m3 (26) 26.0
 
July 15, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) N/A 19.0 μg/m3 (17) 5.4 μg/m3 (23) 23.0
 
July 15, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) N/A 20.0 μg/m3 (18) -1.9 μg/m3 (0) 25.0
 
July 15, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A 59.0 μg/m3 (52) N/A 52.0
 
July 15, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) N/A 89.0 μg/m3 (67) 22.2 μg/m3 (72) 72.0
 
July 15, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (18) N/A 91.0 μg/m3 (68) 21.7 μg/m3 (71) 71.0
 
July 15, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) N/A 22.0 μg/m3 (20) N/A 23.0
 
July 15, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) N/A 18.0 μg/m3 (16) 12.5 μg/m3 (51) 51.0
 
July 15, 2019, midnight N/A N/A N/A N/A N/A N/A 43.0 ppb (33) N/A 62.0 μg/m3 (54) 11.5 μg/m3 (48) 54.0
 
July 14, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (35) N/A 35.0 μg/m3 (32) 0.2 μg/m3 (1) 35.0
 
July 14, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (35) N/A 35.0 μg/m3 (32) 1.9 μg/m3 (8) 35.0
 
July 14, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (34) N/A 23.0 μg/m3 (21) 0.6 μg/m3 (2) 34.0
 
July 14, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (32) N/A 21.0 μg/m3 (19) 3.8 μg/m3 (16) 32.0
 
July 14, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (33) N/A 18.0 μg/m3 (16) 9.3 μg/m3 (39) 39.0
 
July 14, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (33) N/A 20.0 μg/m3 (18) 10.2 μg/m3 (42) 42.0
 
July 14, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (32) N/A 10.0 μg/m3 (9) 12.0 μg/m3 (50) 50.0
 
July 14, 2019, 4 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) 14.1 μg/m3 (54) 54.0
 
July 14, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) N/A 4.0 μg/m3 (4) 10.9 μg/m3 (45) 45.0
 
July 14, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (22) N/A 8.0 μg/m3 (7) 4.8 μg/m3 (20) 22.0
 
July 14, 2019, 1 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) 9.9 μg/m3 (41) 41.0
 
July 14, 2019, noon N/A N/A N/A N/A N/A N/A 20.0 ppb (15) N/A 10.0 μg/m3 (9) 2.4 μg/m3 (10) 15.0
 
July 14, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (16) N/A 12.0 μg/m3 (11) 1.4 μg/m3 (6) 16.0
 
July 14, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (17) N/A 8.0 μg/m3 (7) 0.0 μg/m3 (0) 17.0
 
July 14, 2019, 9 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) 9.3 μg/m3 (39) 39.0
 
July 14, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (18) N/A 12.0 μg/m3 (11) 4.1 μg/m3 (17) 18.0
 
July 14, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (21) N/A N/A 5.1 μg/m3 (21) 21.0
 
July 14, 2019, 6 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) 15.5 μg/m3 (57) 57.0
 
July 14, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) N/A 28.0 μg/m3 (25) 27.4 μg/m3 (83) 83.0
 
July 14, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A 28.0 μg/m3 (25) 12.5 μg/m3 (51) 51.0