AQSQID: 300750001

Site Name: Broadus

Location: Powder River Co, MT

Reporting: True, Located: True

Current AQI: 22.0

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
May 19, 2019, noon N/A N/A N/A N/A N/A N/A 29.0 ppb (22) N/A 16.0 μg/m3 (15) 4.2 μg/m3 (18) 22.0
 
May 19, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) N/A 7.0 μg/m3 (6) 5.3 μg/m3 (22) 23.0
 
May 19, 2019, 10 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) 3.2 μg/m3 (13) 25.0
 
May 19, 2019, 9 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) 4.9 μg/m3 (20) 25.0
 
May 19, 2019, 8 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) 7.7 μg/m3 (32) 32.0
 
May 19, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) N/A 11.0 μg/m3 (10) 10.0 μg/m3 (42) 42.0
 
May 19, 2019, 6 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) 1.1 μg/m3 (5) 23.0
 
May 19, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (22) N/A 13.0 μg/m3 (12) 3.7 μg/m3 (15) 22.0
 
May 19, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (22) N/A 14.0 μg/m3 (13) 0.7 μg/m3 (3) 22.0
 
May 19, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (22) N/A 4.0 μg/m3 (4) 0.4 μg/m3 (2) 22.0
 
May 19, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (21) N/A 2.0 μg/m3 (2) 4.4 μg/m3 (18) 21.0
 
May 19, 2019, 1 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) 7.1 μg/m3 (30) 30.0
 
May 19, 2019, midnight N/A N/A N/A N/A N/A N/A 26.0 ppb (20) N/A -1.0 μg/m3 (0) -2.5 μg/m3 (0) 20.0
 
May 18, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (22) N/A -1.0 μg/m3 (0) 0.3 μg/m3 (1) 22.0
 
May 18, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) N/A 2.0 μg/m3 (2) 2.2 μg/m3 (9) 23.0
 
May 18, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (25) N/A 1.0 μg/m3 (1) 4.0 μg/m3 (17) 25.0
 
May 18, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) N/A 2.0 μg/m3 (2) 2.0 μg/m3 (8) 24.0
 
May 18, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) N/A 0.0 μg/m3 (0) 2.3 μg/m3 (10) 25.0
 
May 18, 2019, 6 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) 0.0 μg/m3 (0) 25.0
 
May 18, 2019, 5 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) 6.3 μg/m3 (26) 26.0
 
May 18, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) N/A -2.0 μg/m3 (0) 2.8 μg/m3 (12) 25.0
 
May 18, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) N/A N/A N/A 26.0
 
May 18, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) N/A -2.0 μg/m3 (0) 3.1 μg/m3 (13) 25.0
 
May 18, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) N/A -1.0 μg/m3 (0) 2.9 μg/m3 (12) 24.0
 
May 18, 2019, noon N/A N/A N/A N/A N/A N/A 31.0 ppb (24) N/A -2.0 μg/m3 (0) -1.5 μg/m3 (0) 24.0
 
May 18, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) N/A 0.0 μg/m3 (0) -1.2 μg/m3 (0) 24.0
 
May 18, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) N/A 1.0 μg/m3 (1) 5.1 μg/m3 (21) 24.0
 
May 18, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) N/A 5.0 μg/m3 (5) 5.1 μg/m3 (21) 25.0
 
May 18, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A 3.0 μg/m3 (3) 7.6 μg/m3 (32) 32.0
 
May 18, 2019, 7 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) 6.2 μg/m3 (26) 26.0
 
May 18, 2019, 6 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) 4.5 μg/m3 (19) 26.0
 
May 18, 2019, 5 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
 
May 18, 2019, 4 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) -2.1 μg/m3 (0) 23.0
 
May 18, 2019, 3 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) 2.4 μg/m3 (10) 21.0
 
May 18, 2019, 2 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) 5.3 μg/m3 (22) 22.0
 
May 18, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (22) N/A 2.0 μg/m3 (2) 0.0 μg/m3 (0) 22.0
 
May 18, 2019, midnight N/A N/A N/A N/A N/A N/A 29.0 ppb (22) N/A 0.0 μg/m3 (0) 11.5 μg/m3 (48) 48.0
 
May 17, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (22) N/A -3.0 μg/m3 (0) 25.7 μg/m3 (79) 79.0
 
May 17, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) N/A 0.0 μg/m3 (0) -1.2 μg/m3 (0) 23.0
 
May 17, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (22) N/A -1.0 μg/m3 (0) 2.7 μg/m3 (11) 22.0
 
May 17, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (22) N/A 3.0 μg/m3 (3) 1.9 μg/m3 (8) 22.0
 
May 17, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) N/A 6.0 μg/m3 (5) 3.8 μg/m3 (16) 23.0
 
May 17, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) N/A 14.0 μg/m3 (13) 14.1 μg/m3 (54) 54.0
 
May 17, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (25) N/A 20.0 μg/m3 (18) 22.4 μg/m3 (72) 72.0
 
May 17, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) N/A 14.0 μg/m3 (13) 28.6 μg/m3 (85) 85.0
 
May 17, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) N/A 11.0 μg/m3 (10) 18.1 μg/m3 (63) 63.0
 
May 17, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) N/A 15.0 μg/m3 (14) 8.2 μg/m3 (34) 34.0
 
May 17, 2019, 1 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) 0.3 μg/m3 (1) 28.0
 
May 17, 2019, noon N/A N/A N/A N/A N/A N/A 35.0 ppb (27) N/A 4.0 μg/m3 (4) 1.2 μg/m3 (5) 27.0
 
May 17, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) N/A 4.0 μg/m3 (4) 3.0 μg/m3 (12) 25.0
 
May 17, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) N/A 7.0 μg/m3 (6) -1.2 μg/m3 (0) 26.0
 
May 17, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) N/A 4.0 μg/m3 (4) 1.7 μg/m3 (7) 25.0
 
May 17, 2019, 8 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) -2.3 μg/m3 (0) 26.0
 
May 17, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) N/A 6.0 μg/m3 (5) N/A 25.0
 
May 17, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) N/A 6.0 μg/m3 (5) 3.0 μg/m3 (12) 25.0
 
May 17, 2019, 5 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) 5.8 μg/m3 (24) 24.0
 
May 17, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (22) N/A 7.0 μg/m3 (6) 4.7 μg/m3 (20) 22.0
 
May 17, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (22) N/A 10.0 μg/m3 (9) 6.4 μg/m3 (27) 27.0
 
May 17, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (21) N/A 13.0 μg/m3 (12) -4.0 μg/m3 (0) 21.0
 
May 17, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (25) N/A 18.0 μg/m3 (16) 9.1 μg/m3 (38) 38.0
 
May 17, 2019, midnight N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A 23.0 μg/m3 (21) 3.1 μg/m3 (13) 28.0
 
May 16, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (25) N/A 19.0 μg/m3 (17) 10.0 μg/m3 (42) 42.0
 
May 16, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (25) N/A 8.0 μg/m3 (7) 2.3 μg/m3 (10) 25.0
 
May 16, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) N/A 10.0 μg/m3 (9) 8.0 μg/m3 (33) 33.0
 
May 16, 2019, 8 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) 0.1 μg/m3 (0) 30.0
 
May 16, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) N/A 21.0 μg/m3 (19) 3.2 μg/m3 (13) 27.0
 
May 16, 2019, 6 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) 12.1 μg/m3 (50) 50.0
 
May 16, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) N/A 25.0 μg/m3 (23) 8.8 μg/m3 (37) 37.0
 
May 16, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (21) N/A 18.0 μg/m3 (16) 10.6 μg/m3 (44) 44.0
 
May 16, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) N/A 9.0 μg/m3 (8) 0.0 μg/m3 (0) 25.0
 
May 16, 2019, 2 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) 5.5 μg/m3 (23) 24.0
 
May 16, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (22) N/A 14.0 μg/m3 (13) 3.3 μg/m3 (14) 22.0
 
May 16, 2019, noon N/A N/A N/A N/A N/A N/A 23.0 ppb (18) N/A 12.0 μg/m3 (11) -1.3 μg/m3 (0) 18.0
 
May 16, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (17) N/A 3.0 μg/m3 (3) -2.2 μg/m3 (0) 17.0
 
May 16, 2019, 10 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) N/A 21.0
 
May 16, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) N/A 4.0 μg/m3 (4) -1.1 μg/m3 (0) 23.0
 
May 16, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) N/A 7.0 μg/m3 (6) -1.9 μg/m3 (0) 23.0
 
May 16, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) N/A 7.0 μg/m3 (6) N/A 26.0
 
May 16, 2019, 6 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) 7.9 μg/m3 (33) 33.0
 
May 16, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A 19.0 μg/m3 (17) 4.2 μg/m3 (18) 28.0
 
May 16, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (35) N/A 72.0 μg/m3 (58) 21.4 μg/m3 (70) 70.0
 
May 16, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (35) N/A N/A 21.0 μg/m3 (69) 69.0
 
May 16, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (32) N/A 51.0 μg/m3 (46) 7.7 μg/m3 (32) 46.0
 
May 16, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (33) N/A 73.0 μg/m3 (59) 13.5 μg/m3 (53) 59.0
 
May 16, 2019, midnight N/A N/A N/A N/A N/A N/A 49.0 ppb (38) N/A 123.0 μg/m3 (84) 19.1 μg/m3 (65) 84.0
 
May 15, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 51.0 ppb (39) N/A 125.0 μg/m3 (85) 16.3 μg/m3 (59) 85.0
 
May 15, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 51.0 ppb (39) N/A 159.0 μg/m3 (102) 20.5 μg/m3 (68) 102.0
 
May 15, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 52.0 ppb (40) N/A 122.0 μg/m3 (84) 17.0 μg/m3 (61) 84.0
 
May 15, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 51.0 ppb (39) N/A 96.0 μg/m3 (70) 12.5 μg/m3 (51) 70.0
 
May 15, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 51.0 ppb (39) N/A 60.0 μg/m3 (52) 14.5 μg/m3 (55) 55.0
 
May 15, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (38) N/A 66.0 μg/m3 (56) 9.2 μg/m3 (38) 56.0
 
May 15, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (37) N/A 76.0 μg/m3 (60) 9.5 μg/m3 (40) 60.0
 
May 15, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (37) N/A 43.0 μg/m3 (39) 2.7 μg/m3 (11) 39.0
 
May 15, 2019, 3 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) 13.4 μg/m3 (53) 53.0
 
May 15, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) N/A 15.0 μg/m3 (14) 7.5 μg/m3 (31) 31.0
 
May 15, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) N/A 13.0 μg/m3 (12) 13.6 μg/m3 (53) 53.0
 
May 15, 2019, noon N/A N/A N/A N/A N/A N/A 35.0 ppb (27) N/A 12.0 μg/m3 (11) 4.8 μg/m3 (20) 27.0
 
May 15, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (31) N/A 9.0 μg/m3 (8) -0.1 μg/m3 (0) 31.0
 
May 15, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (31) N/A 8.0 μg/m3 (7) 0.3 μg/m3 (1) 31.0
 
May 15, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (32) N/A 8.0 μg/m3 (7) 4.2 μg/m3 (18) 32.0
 
May 15, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (34) N/A 17.0 μg/m3 (15) 14.5 μg/m3 (55) 55.0
 
May 15, 2019, 7 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) -3.3 μg/m3 (0) 25.0
 
May 15, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (25) N/A 14.0 μg/m3 (13) -2.3 μg/m3 (0) 25.0
 
May 15, 2019, 5 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) 3.7 μg/m3 (15) 27.0
 
May 15, 2019, 4 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) 0.8 μg/m3 (3) 28.0
 
May 15, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (32) N/A 10.0 μg/m3 (9) 1.3 μg/m3 (5) 32.0
 
May 15, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (35) N/A 17.0 μg/m3 (15) 2.4 μg/m3 (10) 35.0
 
May 15, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (38) N/A 15.0 μg/m3 (14) 9.5 μg/m3 (40) 40.0
 
May 15, 2019, midnight N/A N/A N/A N/A N/A N/A 53.0 ppb (41) N/A 14.0 μg/m3 (13) 13.2 μg/m3 (53) 53.0
 
May 14, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 55.0 ppb (42) N/A 10.0 μg/m3 (9) 22.6 μg/m3 (73) 73.0
 
May 14, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 55.0 ppb (42) N/A 16.0 μg/m3 (15) 9.2 μg/m3 (38) 42.0
 
May 14, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 54.0 ppb (42) N/A 10.0 μg/m3 (9) 11.3 μg/m3 (47) 47.0
 
May 14, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 56.0 ppb (43) N/A 3.0 μg/m3 (3) 3.8 μg/m3 (16) 43.0
 
May 14, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 57.0 ppb (44) N/A 0.0 μg/m3 (0) -2.6 μg/m3 (0) 44.0
 
May 14, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 56.0 ppb (43) N/A 3.0 μg/m3 (3) N/A 43.0
 
May 14, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 50.0 ppb (38) N/A 38.0 μg/m3 (35) 7.0 μg/m3 (29) 38.0
 
May 14, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (29) N/A 19.0 μg/m3 (17) 12.2 μg/m3 (50) 50.0
 
May 14, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) N/A 21.0 μg/m3 (19) 7.9 μg/m3 (33) 33.0
 
May 14, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) N/A 70.0 μg/m3 (58) 19.4 μg/m3 (66) 66.0
 
May 14, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 18.0 ppb (14) N/A 73.0 μg/m3 (59) 15.3 μg/m3 (57) 59.0
 
May 14, 2019, noon N/A N/A N/A N/A N/A N/A 18.0 ppb (14) N/A 22.0 μg/m3 (20) 13.2 μg/m3 (53) 53.0
 
May 14, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 19.0 ppb (15) N/A 12.0 μg/m3 (11) 4.7 μg/m3 (20) 20.0
 
May 14, 2019, 10 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) 2.5 μg/m3 (10) 14.0
 
May 14, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (18) N/A 18.0 μg/m3 (16) 6.2 μg/m3 (26) 26.0
 
May 14, 2019, 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) -2.5 μg/m3 (0) 22.0
 
May 14, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) N/A 1.0 μg/m3 (1) 3.5 μg/m3 (15) 27.0
 
May 14, 2019, 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) 2.9 μg/m3 (12) 28.0
 
May 14, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (34) N/A 7.0 μg/m3 (6) 5.9 μg/m3 (25) 34.0
 
May 14, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 50.0 ppb (38) N/A 19.0 μg/m3 (17) 4.9 μg/m3 (20) 38.0
 
May 14, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (36) N/A 34.0 μg/m3 (31) 2.9 μg/m3 (12) 36.0
 
May 14, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (32) N/A 54.0 μg/m3 (49) 7.5 μg/m3 (31) 49.0
 
May 14, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 50.0 ppb (38) N/A 29.0 μg/m3 (26) 12.0 μg/m3 (50) 50.0
 
May 14, 2019, midnight N/A N/A N/A N/A N/A N/A 55.0 ppb (42) N/A 32.0 μg/m3 (29) 12.8 μg/m3 (52) 52.0
 
May 13, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 56.0 ppb (43) N/A 30.0 μg/m3 (27) 9.6 μg/m3 (40) 43.0
 
May 13, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 56.0 ppb (43) N/A 34.0 μg/m3 (31) 4.3 μg/m3 (18) 43.0
 
May 13, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 55.0 ppb (42) N/A 9.0 μg/m3 (8) 7.1 μg/m3 (30) 42.0
 
May 13, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 54.0 ppb (42) N/A 2.0 μg/m3 (2) 7.1 μg/m3 (30) 42.0
 
May 13, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 53.0 ppb (41) N/A N/A 4.8 μg/m3 (20) 41.0
 
May 13, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 54.0 ppb (42) N/A N/A -0.5 μg/m3 (0) 42.0
 
May 13, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 51.0 ppb (39) N/A N/A 1.5 μg/m3 (6) 39.0
 
May 13, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (35) N/A N/A 6.9 μg/m3 (29) 35.0
 
May 13, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A N/A 14.5 μg/m3 (55) 55.0
 
May 13, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) N/A N/A 55.2 μg/m3 (149) 149.0
 
May 13, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 30.8 μg/m3 (90) 90.0
 
May 13, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (32) N/A 9.0 μg/m3 (8) -1.2 μg/m3 (0) 32.0
 
May 13, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (37) N/A 11.0 μg/m3 (10) 4.9 μg/m3 (20) 37.0
 
May 13, 2019, midnight N/A N/A N/A N/A N/A N/A 49.0 ppb (38) N/A 16.0 μg/m3 (15) -0.6 μg/m3 (0) 38.0
 
May 12, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (38) N/A 15.0 μg/m3 (14) 3.0 μg/m3 (12) 38.0
 
May 12, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 50.0 ppb (38) N/A 12.0 μg/m3 (11) 5.4 μg/m3 (23) 38.0
 
May 12, 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) 7.3 μg/m3 (30) 39.0
 
May 12, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 52.0 ppb (40) N/A 10.0 μg/m3 (9) 3.0 μg/m3 (12) 40.0
 
May 12, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 52.0 ppb (40) N/A 8.0 μg/m3 (7) -0.3 μg/m3 (0) 40.0
 
May 12, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 53.0 ppb (41) N/A 11.0 μg/m3 (10) 11.7 μg/m3 (49) 49.0
 
May 12, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (38) N/A 11.0 μg/m3 (10) 6.4 μg/m3 (27) 38.0
 
May 12, 2019, 4 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) -2.9 μg/m3 (0) 33.0
 
May 12, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (25) N/A 10.0 μg/m3 (9) N/A 25.0
 
May 12, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (21) N/A 7.0 μg/m3 (6) 7.0 μg/m3 (29) 29.0
 
May 12, 2019, 1 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) 11.8 μg/m3 (49) 49.0
 
May 12, 2019, noon N/A N/A N/A N/A N/A N/A 17.0 ppb (13) N/A 6.0 μg/m3 (5) 5.2 μg/m3 (22) 22.0
 
May 12, 2019, 11 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) 0.0 μg/m3 (0) 12.0
 
May 12, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A 16.0 ppb (12) N/A 0.0 μg/m3 (0) 0.0 μg/m3 (0) 12.0
 
May 12, 2019, 9 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) 3.7 μg/m3 (15) 17.0
 
May 12, 2019, 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) 15.3 μg/m3 (57) 57.0
 
May 12, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 19.0 ppb (15) N/A N/A 22.1 μg/m3 (71) 71.0
 
May 12, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 16.0 ppb (12) N/A N/A N/A 12.0
 
May 12, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (18) N/A N/A 4.1 μg/m3 (17) 18.0
 
May 12, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) N/A N/A -1.5 μg/m3 (0) 23.0
 
May 12, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (22) N/A 77.0 μg/m3 (61) 0.0 μg/m3 (0) 61.0