AQSQID: 490030003

Site Name: Brigham City

Location: Brigham City, UT

Reporting: False, Located: True

Current AQI: None

Brigham City UT, US: 41.492802, -112.0187

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
June 18, 2019, 3 p.m. 4.0 ppb (4) 1.0 ppb (1) N/A 3.0 ppb (3) N/A N/A 51.0 ppb (39) N/A N/A N/A 39.0
 
June 18, 2019, 2 p.m. 5.0 ppb (5) 1.0 ppb (1) N/A 4.0 ppb (4) N/A N/A 46.0 ppb (35) N/A N/A N/A 35.0
 
June 18, 2019, 1 p.m. 11.0 ppb (10) 3.0 ppb (3) N/A 9.0 ppb (8) N/A N/A 32.0 ppb (25) N/A N/A N/A 25.0
 
June 18, 2019, noon 9.0 ppb (8) 1.0 ppb (1) N/A 7.0 ppb (6) N/A N/A 31.0 ppb (24) N/A N/A N/A 24.0
 
June 18, 2019, 11 a.m. 4.0 ppb (4) 1.0 ppb (1) N/A 3.0 ppb (3) N/A N/A 38.0 ppb (29) N/A N/A N/A 29.0
 
June 18, 2019, 10 a.m. 3.0 ppb (3) 1.0 ppb (1) N/A 3.0 ppb (3) N/A N/A 37.0 ppb (28) N/A N/A N/A 28.0
 
June 18, 2019, 9 a.m. 3.0 ppb (3) 0.0 ppb (0) N/A 3.0 ppb (3) N/A N/A 38.0 ppb (29) N/A N/A N/A 29.0
 
June 18, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A
June 18, 2019, 7 a.m. 3.0 ppb (3) 0.0 ppb (0) N/A 2.0 ppb (2) N/A N/A 42.0 ppb (32) N/A N/A N/A 32.0
 
June 18, 2019, 6 a.m. 3.0 ppb (3) 0.0 ppb (0) N/A 3.0 ppb (3) N/A N/A 40.0 ppb (31) N/A N/A N/A 31.0
 
June 18, 2019, 5 a.m. 3.0 ppb (3) 1.0 ppb (1) N/A 3.0 ppb (3) N/A N/A 45.0 ppb (35) N/A N/A N/A 35.0
 
June 18, 2019, 4 a.m. 3.0 ppb (3) 1.0 ppb (1) N/A 2.0 ppb (2) N/A N/A 49.0 ppb (38) N/A N/A N/A 38.0
 
June 18, 2019, 3 a.m. 2.0 ppb (2) 1.0 ppb (1) N/A 2.0 ppb (2) N/A N/A 50.0 ppb (38) N/A N/A N/A 38.0
 
June 18, 2019, 2 a.m. 4.0 ppb (4) 1.0 ppb (1) N/A 4.0 ppb (4) N/A N/A 48.0 ppb (37) N/A N/A N/A 37.0
 
June 18, 2019, 1 a.m. 3.0 ppb (3) 1.0 ppb (1) N/A 2.0 ppb (2) N/A N/A 52.0 ppb (40) N/A N/A N/A 40.0
 
June 18, 2019, midnight 4.0 ppb (4) 1.0 ppb (1) N/A 3.0 ppb (3) N/A N/A 53.0 ppb (41) N/A N/A N/A 41.0
 
June 17, 2019, 11 p.m. 3.0 ppb (3) 1.0 ppb (1) N/A 2.0 ppb (2) N/A N/A 56.0 ppb (43) N/A N/A N/A 43.0
 
June 17, 2019, 10 p.m. 3.0 ppb (3) 1.0 ppb (1) N/A 2.0 ppb (2) N/A N/A 61.0 ppb (47) N/A N/A N/A 47.0
 
June 17, 2019, 9 p.m. 2.0 ppb (2) 1.0 ppb (1) N/A 2.0 ppb (2) N/A N/A 64.0 ppb (49) N/A N/A N/A 49.0
 
June 17, 2019, 8 p.m. 2.0 ppb (2) 1.0 ppb (1) N/A 1.0 ppb (1) N/A N/A 66.0 ppb (51) N/A N/A N/A 51.0
 
June 17, 2019, 7 p.m. 2.0 ppb (2) 1.0 ppb (1) N/A 2.0 ppb (2) N/A N/A 69.0 ppb (53) N/A N/A N/A 53.0
 
June 17, 2019, 6 p.m. 3.0 ppb (3) 1.0 ppb (1) N/A 2.0 ppb (2) N/A N/A 66.0 ppb (51) N/A N/A N/A 51.0
 
June 17, 2019, 5 p.m. 3.0 ppb (3) 1.0 ppb (1) N/A 2.0 ppb (2) N/A N/A 61.0 ppb (47) N/A N/A N/A 47.0
 
June 17, 2019, 4 p.m. 5.0 ppb (5) 1.0 ppb (1) N/A 4.0 ppb (4) N/A N/A 55.0 ppb (42) N/A N/A N/A 42.0
 
June 17, 2019, 3 p.m. 6.0 ppb (6) 2.0 ppb (2) N/A 5.0 ppb (5) N/A N/A 52.0 ppb (40) N/A N/A N/A 40.0
 
June 17, 2019, 2 p.m. 12.0 ppb (11) 3.0 ppb (3) N/A 8.0 ppb (7) N/A N/A 42.0 ppb (32) N/A N/A N/A 32.0
 
June 17, 2019, 1 p.m. 13.0 ppb (12) 4.0 ppb (4) N/A 9.0 ppb (8) N/A N/A 37.0 ppb (28) N/A N/A N/A 28.0
 
June 17, 2019, noon 7.0 ppb (6) 1.0 ppb (1) N/A 7.0 ppb (6) N/A N/A 49.0 ppb (38) N/A N/A 28.6 μg/m3 (85) 85.0
 
June 17, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 50.0 ppb (38) N/A N/A 26.8 μg/m3 (81) 81.0
 
June 17, 2019, 10 a.m. 2.0 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A N/A 54.0 ppb (42) N/A N/A 23.7 μg/m3 (75) 75.0
 
June 17, 2019, 9 a.m. 3.0 ppb (3) 1.0 ppb (1) N/A 2.0 ppb (2) N/A N/A 52.0 ppb (40) N/A N/A 23.4 μg/m3 (74) 74.0
 
June 17, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 30.3 μg/m3 (89) 89.0
 
June 17, 2019, 7 a.m. 2.0 ppb (2) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 55.0 ppb (42) N/A N/A 21.8 μg/m3 (71) 71.0
 
June 17, 2019, 6 a.m. 3.0 ppb (3) 0.0 ppb (0) N/A 3.0 ppb (3) N/A N/A 50.0 ppb (38) N/A N/A 24.1 μg/m3 (76) 76.0
 
June 17, 2019, 5 a.m. 5.0 ppb (5) 1.0 ppb (1) N/A 4.0 ppb (4) N/A N/A 44.0 ppb (34) N/A N/A 26.7 μg/m3 (81) 81.0
 
June 17, 2019, 4 a.m. 4.0 ppb (4) 0.0 ppb (0) N/A 4.0 ppb (4) N/A N/A 49.0 ppb (38) N/A N/A 26.7 μg/m3 (81) 81.0
 
June 17, 2019, 3 a.m. 5.0 ppb (5) 1.0 ppb (1) N/A 5.0 ppb (5) N/A N/A 51.0 ppb (39) N/A N/A 24.9 μg/m3 (77) 77.0
 
June 17, 2019, 2 a.m. 3.0 ppb (3) 1.0 ppb (1) N/A 2.0 ppb (2) N/A N/A 53.0 ppb (41) N/A N/A 30.0 μg/m3 (88) 88.0
 
June 17, 2019, 1 a.m. 3.0 ppb (3) 1.0 ppb (1) N/A 2.0 ppb (2) N/A N/A 51.0 ppb (39) N/A N/A 24.1 μg/m3 (76) 76.0
 
June 17, 2019, midnight 2.0 ppb (2) 1.0 ppb (1) N/A 2.0 ppb (2) N/A N/A 54.0 ppb (42) N/A N/A 22.9 μg/m3 (73) 73.0
 
June 16, 2019, 11 p.m. 2.0 ppb (2) 1.0 ppb (1) N/A 1.0 ppb (1) N/A N/A 61.0 ppb (47) N/A N/A 33.2 μg/m3 (95) 95.0
 
June 16, 2019, 10 p.m. 1.0 ppb (1) 1.0 ppb (1) N/A 1.0 ppb (1) N/A N/A 62.0 ppb (48) N/A N/A 30.1 μg/m3 (89) 89.0
 
June 16, 2019, 9 p.m. 1.0 ppb (1) 1.0 ppb (1) N/A 1.0 ppb (1) N/A N/A 63.0 ppb (48) N/A N/A 25.1 μg/m3 (78) 78.0
 
June 16, 2019, 8 p.m. 2.0 ppb (2) 1.0 ppb (1) N/A 1.0 ppb (1) N/A N/A 63.0 ppb (48) N/A N/A 26.7 μg/m3 (81) 81.0
 
June 16, 2019, 7 p.m. 3.0 ppb (3) 1.0 ppb (1) N/A 3.0 ppb (3) N/A N/A 64.0 ppb (49) N/A N/A 23.0 μg/m3 (73) 73.0
 
June 16, 2019, 6 p.m. 4.0 ppb (4) 1.0 ppb (1) N/A 3.0 ppb (3) N/A N/A 61.0 ppb (47) N/A N/A N/A 47.0
 
June 16, 2019, 5 p.m. 3.0 ppb (3) 1.0 ppb (1) N/A 2.0 ppb (2) N/A N/A 56.0 ppb (43) N/A N/A N/A 43.0
 
June 16, 2019, 4 p.m. 5.0 ppb (5) 2.0 ppb (2) N/A 4.0 ppb (4) N/A N/A 50.0 ppb (38) N/A N/A 29.3 μg/m3 (87) 87.0
 
June 16, 2019, 3 p.m. 8.0 ppb (7) 3.0 ppb (3) N/A 5.0 ppb (5) N/A N/A 35.0 ppb (27) N/A N/A 24.0 μg/m3 (76) 76.0
 
June 16, 2019, 2 p.m. 9.0 ppb (8) 3.0 ppb (3) N/A 6.0 ppb (6) N/A N/A 25.0 ppb (19) N/A N/A 24.9 μg/m3 (77) 77.0
 
June 16, 2019, 1 p.m. 9.0 ppb (8) 2.0 ppb (2) N/A 7.0 ppb (6) N/A N/A 30.0 ppb (23) N/A N/A 23.9 μg/m3 (75) 75.0
 
June 16, 2019, noon 11.0 ppb (10) 1.0 ppb (1) N/A 10.0 ppb (9) N/A N/A 21.0 ppb (16) N/A N/A 25.2 μg/m3 (78) 78.0
 
June 16, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (35) N/A N/A 36.0 μg/m3 (101) 101.0
 
June 16, 2019, 10 a.m. 2.0 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A N/A 49.0 ppb (38) N/A N/A 24.7 μg/m3 (77) 77.0
 
June 16, 2019, 9 a.m. 3.0 ppb (3) 0.0 ppb (0) N/A 3.0 ppb (3) N/A N/A 44.0 ppb (34) N/A N/A 23.5 μg/m3 (74) 74.0
 
June 16, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 26.2 μg/m3 (80) 80.0
 
June 16, 2019, 7 a.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 55.0 ppb (42) N/A N/A 31.0 μg/m3 (90) 90.0
 
June 16, 2019, 6 a.m. 3.0 ppb (3) 1.0 ppb (1) N/A 2.0 ppb (2) N/A N/A 56.0 ppb (43) N/A N/A 25.8 μg/m3 (79) 79.0
 
June 16, 2019, 5 a.m. 3.0 ppb (3) 1.0 ppb (1) N/A 2.0 ppb (2) N/A N/A 55.0 ppb (42) N/A N/A 21.7 μg/m3 (71) 71.0
 
June 16, 2019, 4 a.m. 6.0 ppb (6) 1.0 ppb (1) N/A 5.0 ppb (5) N/A N/A 52.0 ppb (40) N/A N/A 25.7 μg/m3 (79) 79.0
 
June 16, 2019, 3 a.m. 4.0 ppb (4) 1.0 ppb (1) N/A 4.0 ppb (4) N/A N/A 56.0 ppb (43) N/A N/A 33.8 μg/m3 (96) 96.0
 
June 16, 2019, 2 a.m. 3.0 ppb (3) 1.0 ppb (1) N/A 2.0 ppb (2) N/A N/A 57.0 ppb (44) N/A N/A 30.9 μg/m3 (90) 90.0
 
June 16, 2019, 1 a.m. 2.0 ppb (2) 1.0 ppb (1) N/A 1.0 ppb (1) N/A N/A 59.0 ppb (45) N/A N/A 24.1 μg/m3 (76) 76.0
 
June 16, 2019, midnight 2.0 ppb (2) 1.0 ppb (1) N/A 1.0 ppb (1) N/A N/A 60.0 ppb (46) N/A N/A N/A 46.0
 
June 15, 2019, 11 p.m. 2.0 ppb (2) 1.0 ppb (1) N/A 1.0 ppb (1) N/A N/A 61.0 ppb (47) N/A N/A 30.5 μg/m3 (89) 89.0
 
June 15, 2019, 10 p.m. 2.0 ppb (2) 1.0 ppb (1) N/A 1.0 ppb (1) N/A N/A 57.0 ppb (44) N/A N/A 30.4 μg/m3 (89) 89.0
 
June 15, 2019, 9 p.m. 2.0 ppb (2) 1.0 ppb (1) N/A 1.0 ppb (1) N/A N/A 53.0 ppb (41) N/A N/A 23.1 μg/m3 (74) 74.0
 
June 15, 2019, 8 p.m. 2.0 ppb (2) 1.0 ppb (1) N/A 1.0 ppb (1) N/A N/A 51.0 ppb (39) N/A N/A 32.5 μg/m3 (94) 94.0
 
June 15, 2019, 7 p.m. 3.0 ppb (3) 1.0 ppb (1) N/A 2.0 ppb (2) N/A N/A 51.0 ppb (39) N/A N/A 27.1 μg/m3 (82) 82.0
 
June 15, 2019, 6 p.m. 4.0 ppb (4) 1.0 ppb (1) N/A 3.0 ppb (3) N/A N/A 54.0 ppb (42) N/A N/A 33.3 μg/m3 (95) 95.0
 
June 15, 2019, 5 p.m. 4.0 ppb (4) 1.0 ppb (1) N/A 3.0 ppb (3) N/A N/A 50.0 ppb (38) N/A N/A 30.8 μg/m3 (90) 90.0
 
June 15, 2019, 4 p.m. 5.0 ppb (5) 2.0 ppb (2) N/A 4.0 ppb (4) N/A N/A 45.0 ppb (35) N/A N/A 26.9 μg/m3 (82) 82.0
 
June 15, 2019, 3 p.m. 10.0 ppb (9) 4.0 ppb (4) N/A 6.0 ppb (6) N/A N/A 33.0 ppb (25) N/A N/A 23.3 μg/m3 (74) 74.0
 
June 15, 2019, 2 p.m. 10.0 ppb (9) 4.0 ppb (4) N/A 7.0 ppb (6) N/A N/A 28.0 ppb (22) N/A N/A 22.0 μg/m3 (71) 71.0
 
June 15, 2019, 1 p.m. 6.0 ppb (6) 2.0 ppb (2) N/A 4.0 ppb (4) N/A N/A 34.0 ppb (26) N/A N/A 24.0 μg/m3 (76) 76.0
 
June 15, 2019, noon 4.0 ppb (4) 1.0 ppb (1) N/A 3.0 ppb (3) N/A N/A 37.0 ppb (28) N/A N/A 28.8 μg/m3 (86) 86.0
 
June 15, 2019, 11 a.m. 3.0 ppb (3) 1.0 ppb (1) N/A 3.0 ppb (3) N/A N/A N/A N/A N/A 25.4 μg/m3 (79) 79.0
 
June 15, 2019, 10 a.m. 2.0 ppb (2) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 42.0 ppb (32) N/A N/A 24.4 μg/m3 (76) 76.0
 
June 15, 2019, 9 a.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 42.0 ppb (32) N/A N/A 35.1 μg/m3 (99) 99.0
 
June 15, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 24.0 μg/m3 (76) 76.0
 
June 15, 2019, 7 a.m. 2.0 ppb (2) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 44.0 ppb (34) N/A N/A 24.6 μg/m3 (77) 77.0
 
June 15, 2019, 6 a.m. 3.0 ppb (3) 1.0 ppb (1) N/A 2.0 ppb (2) N/A N/A 43.0 ppb (33) N/A N/A 19.1 μg/m3 (65) 65.0
 
June 15, 2019, 5 a.m. 6.0 ppb (6) 1.0 ppb (1) N/A 5.0 ppb (5) N/A N/A 40.0 ppb (31) N/A N/A 27.2 μg/m3 (82) 82.0
 
June 15, 2019, 4 a.m. 7.0 ppb (6) 1.0 ppb (1) N/A 6.0 ppb (6) N/A N/A 40.0 ppb (31) N/A N/A 28.3 μg/m3 (85) 85.0
 
June 15, 2019, 3 a.m. 3.0 ppb (3) 0.0 ppb (0) N/A 3.0 ppb (3) N/A N/A 45.0 ppb (35) N/A N/A 29.4 μg/m3 (87) 87.0
 
June 15, 2019, 2 a.m. 4.0 ppb (4) 1.0 ppb (1) N/A 3.0 ppb (3) N/A N/A 47.0 ppb (36) N/A N/A 25.0 μg/m3 (78) 78.0
 
June 15, 2019, 1 a.m. 4.0 ppb (4) 1.0 ppb (1) N/A 3.0 ppb (3) N/A N/A 48.0 ppb (37) N/A N/A 27.8 μg/m3 (84) 84.0
 
June 15, 2019, midnight 3.0 ppb (3) 1.0 ppb (1) N/A 2.0 ppb (2) N/A N/A 49.0 ppb (38) N/A N/A 22.4 μg/m3 (72) 72.0
 
June 14, 2019, 11 p.m. 2.0 ppb (2) 1.0 ppb (1) N/A 1.0 ppb (1) N/A N/A 51.0 ppb (39) N/A N/A 25.1 μg/m3 (78) 78.0
 
June 14, 2019, 10 p.m. 2.0 ppb (2) 1.0 ppb (1) N/A 2.0 ppb (2) N/A N/A 52.0 ppb (40) N/A N/A 29.0 μg/m3 (86) 86.0
 
June 14, 2019, 9 p.m. 3.0 ppb (3) 1.0 ppb (1) N/A 2.0 ppb (2) N/A N/A 53.0 ppb (41) N/A N/A 38.0 μg/m3 (106) 106.0
 
June 14, 2019, 8 p.m. 2.0 ppb (2) 1.0 ppb (1) N/A 2.0 ppb (2) N/A N/A 53.0 ppb (41) N/A N/A 37.7 μg/m3 (106) 106.0
 
June 14, 2019, 7 p.m. 3.0 ppb (3) 1.0 ppb (1) N/A 2.0 ppb (2) N/A N/A 52.0 ppb (40) N/A N/A 27.2 μg/m3 (82) 82.0
 
June 14, 2019, 6 p.m. 4.0 ppb (4) 1.0 ppb (1) N/A 3.0 ppb (3) N/A N/A 51.0 ppb (39) N/A N/A 26.2 μg/m3 (80) 80.0
 
June 14, 2019, 5 p.m. 2.0 ppb (2) 1.0 ppb (1) N/A 2.0 ppb (2) N/A N/A 50.0 ppb (38) N/A N/A N/A 38.0
 
June 14, 2019, 4 p.m. 4.0 ppb (4) 1.0 ppb (1) N/A 3.0 ppb (3) N/A N/A 48.0 ppb (37) N/A N/A N/A 37.0
 
June 14, 2019, 3 p.m. 7.0 ppb (6) 2.0 ppb (2) N/A 5.0 ppb (5) N/A N/A 42.0 ppb (32) N/A N/A N/A 32.0
 
June 14, 2019, 2 p.m. 13.0 ppb (12) 4.0 ppb (4) N/A 9.0 ppb (8) N/A N/A 28.0 ppb (22) N/A N/A N/A 22.0
 
June 14, 2019, 1 p.m. 19.0 ppb (18) 4.0 ppb (4) N/A 15.0 ppb (14) N/A N/A 27.0 ppb (21) N/A N/A N/A 21.0
 
June 14, 2019, noon 7.0 ppb (6) 1.0 ppb (1) N/A 6.0 ppb (6) N/A N/A 38.0 ppb (29) N/A N/A N/A 29.0
 
June 14, 2019, 11 a.m. 5.0 ppb (5) 1.0 ppb (1) N/A 4.0 ppb (4) N/A N/A 40.0 ppb (31) N/A N/A N/A 31.0
 
June 14, 2019, 10 a.m. 4.0 ppb (4) 1.0 ppb (1) N/A 3.0 ppb (3) N/A N/A 39.0 ppb (30) N/A N/A N/A 30.0
 
June 14, 2019, 9 a.m. 2.0 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A N/A 44.0 ppb (34) N/A N/A N/A 34.0
 
June 14, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A
June 14, 2019, 7 a.m. 2.0 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A N/A 52.0 ppb (40) N/A N/A N/A 40.0
 
June 14, 2019, 6 a.m. 2.0 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A N/A 52.0 ppb (40) N/A N/A N/A 40.0
 
June 14, 2019, 5 a.m. 2.0 ppb (2) 1.0 ppb (1) N/A 2.0 ppb (2) N/A N/A 49.0 ppb (38) N/A N/A N/A 38.0
 
June 14, 2019, 4 a.m. 3.0 ppb (3) 1.0 ppb (1) N/A 2.0 ppb (2) N/A N/A 48.0 ppb (37) N/A N/A N/A 37.0
 
June 14, 2019, 3 a.m. 2.0 ppb (2) 1.0 ppb (1) N/A 2.0 ppb (2) N/A N/A 46.0 ppb (35) N/A N/A N/A 35.0
 
June 14, 2019, 2 a.m. 4.0 ppb (4) 1.0 ppb (1) N/A 4.0 ppb (4) N/A N/A 44.0 ppb (34) N/A N/A N/A 34.0
 
June 14, 2019, 1 a.m. 3.0 ppb (3) 1.0 ppb (1) N/A 2.0 ppb (2) N/A N/A 47.0 ppb (36) N/A N/A N/A 36.0
 
June 14, 2019, midnight 3.0 ppb (3) 1.0 ppb (1) N/A 2.0 ppb (2) N/A N/A 48.0 ppb (37) N/A N/A N/A 37.0
 
June 13, 2019, 11 p.m. 2.0 ppb (2) 1.0 ppb (1) N/A 1.0 ppb (1) N/A N/A 51.0 ppb (39) N/A N/A N/A 39.0
 
June 13, 2019, 10 p.m. 2.0 ppb (2) 1.0 ppb (1) N/A 1.0 ppb (1) N/A N/A 52.0 ppb (40) N/A N/A N/A 40.0
 
June 13, 2019, 9 p.m. 3.0 ppb (3) 1.0 ppb (1) N/A 2.0 ppb (2) N/A N/A 55.0 ppb (42) N/A N/A N/A 42.0
 
June 13, 2019, 8 p.m. 3.0 ppb (3) 1.0 ppb (1) N/A 2.0 ppb (2) N/A N/A 53.0 ppb (41) N/A N/A N/A 41.0
 
June 13, 2019, 7 p.m. 5.0 ppb (5) 1.0 ppb (1) N/A 4.0 ppb (4) N/A N/A 48.0 ppb (37) N/A N/A N/A 37.0
 
June 13, 2019, 6 p.m. 7.0 ppb (6) 2.0 ppb (2) N/A 6.0 ppb (6) N/A N/A 42.0 ppb (32) N/A N/A N/A 32.0
 
June 13, 2019, 5 p.m. 7.0 ppb (6) 2.0 ppb (2) N/A 5.0 ppb (5) N/A N/A 41.0 ppb (32) N/A N/A N/A 32.0
 
June 13, 2019, 4 p.m. 6.0 ppb (6) 2.0 ppb (2) N/A 4.0 ppb (4) N/A N/A 38.0 ppb (29) N/A N/A 6.9 μg/m3 (29) 29.0
 
June 13, 2019, 3 p.m. 7.0 ppb (6) 2.0 ppb (2) N/A 5.0 ppb (5) N/A N/A 35.0 ppb (27) N/A N/A N/A 27.0
 
June 13, 2019, 2 p.m. 7.0 ppb (6) 3.0 ppb (3) N/A 5.0 ppb (5) N/A N/A 33.0 ppb (25) N/A N/A 4.2 μg/m3 (18) 25.0
 
June 13, 2019, 1 p.m. 5.0 ppb (5) 2.0 ppb (2) N/A 3.0 ppb (3) N/A N/A 34.0 ppb (26) N/A N/A 7.8 μg/m3 (32) 32.0
 
June 13, 2019, noon 3.0 ppb (3) 1.0 ppb (1) N/A 2.0 ppb (2) N/A N/A 36.0 ppb (28) N/A N/A 7.2 μg/m3 (30) 30.0
 
June 13, 2019, 11 a.m. 3.0 ppb (3) 1.0 ppb (1) N/A 2.0 ppb (2) N/A N/A 37.0 ppb (28) N/A N/A 6.8 μg/m3 (28) 28.0
 
June 13, 2019, 10 a.m. 9.0 ppb (8) 1.0 ppb (1) N/A 8.0 ppb (7) N/A N/A 23.0 ppb (18) N/A N/A 9.8 μg/m3 (41) 41.0
 
June 13, 2019, 9 a.m. 2.0 ppb (2) 1.0 ppb (1) N/A 1.0 ppb (1) N/A N/A 38.0 ppb (29) N/A N/A 6.2 μg/m3 (26) 29.0
 
June 13, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 9.5 μg/m3 (40) 40.0
 
June 13, 2019, 7 a.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 40.0 ppb (31) N/A N/A 8.8 μg/m3 (37) 37.0
 
June 13, 2019, 6 a.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 42.0 ppb (32) N/A N/A 9.4 μg/m3 (39) 39.0
 
June 13, 2019, 5 a.m. 2.0 ppb (2) 1.0 ppb (1) N/A 2.0 ppb (2) N/A N/A 41.0 ppb (32) N/A N/A 8.2 μg/m3 (34) 34.0
 
June 13, 2019, 4 a.m. 3.0 ppb (3) 1.0 ppb (1) N/A 3.0 ppb (3) N/A N/A 39.0 ppb (30) N/A N/A 15.3 μg/m3 (57) 57.0
 
June 13, 2019, 3 a.m. 9.0 ppb (8) 1.0 ppb (1) N/A 8.0 ppb (7) N/A N/A 33.0 ppb (25) N/A N/A 28.1 μg/m3 (84) 84.0
 
June 13, 2019, 2 a.m. 9.0 ppb (8) 1.0 ppb (1) N/A 8.0 ppb (7) N/A N/A 33.0 ppb (25) N/A N/A 39.9 μg/m3 (111) 111.0
 
June 13, 2019, 1 a.m. 5.0 ppb (5) 1.0 ppb (1) N/A 4.0 ppb (4) N/A N/A 41.0 ppb (32) N/A N/A 19.3 μg/m3 (66) 66.0
 
June 13, 2019, midnight 4.0 ppb (4) 1.0 ppb (1) N/A 3.0 ppb (3) N/A N/A 44.0 ppb (34) N/A N/A 16.8 μg/m3 (60) 60.0
 
June 12, 2019, 11 p.m. 2.0 ppb (2) 1.0 ppb (1) N/A 1.0 ppb (1) N/A N/A 47.0 ppb (36) N/A N/A 17.1 μg/m3 (61) 61.0
 
June 12, 2019, 10 p.m. 3.0 ppb (3) 1.0 ppb (1) N/A 2.0 ppb (2) N/A N/A 51.0 ppb (39) N/A N/A 23.1 μg/m3 (74) 74.0
 
June 12, 2019, 9 p.m. 3.0 ppb (3) 1.0 ppb (1) N/A 2.0 ppb (2) N/A N/A 58.0 ppb (45) N/A N/A 28.7 μg/m3 (86) 86.0
 
June 12, 2019, 8 p.m. 3.0 ppb (3) 1.0 ppb (1) N/A 2.0 ppb (2) N/A N/A 54.0 ppb (42) N/A N/A N/A 42.0
 
June 12, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (38) N/A N/A 19.7 μg/m3 (66) 66.0
 
June 12, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (36) N/A N/A 23.4 μg/m3 (74) 74.0
 
June 12, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (32) N/A N/A 28.9 μg/m3 (86) 86.0
 
June 12, 2019, 4 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
 
June 12, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (18) N/A N/A 48.2 μg/m3 (132) 132.0
 
June 12, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (18) N/A N/A 65.8 μg/m3 (155) 155.0
 
June 12, 2019, 1 p.m. 28.0 ppb (26) 11.0 ppb (10) N/A 17.0 ppb (16) N/A N/A 19.0 ppb (15) N/A N/A 75.4 μg/m3 (160) 160.0
 
June 12, 2019, noon 17.0 ppb (16) 3.0 ppb (3) N/A 14.0 ppb (13) N/A N/A 19.0 ppb (15) N/A N/A 56.1 μg/m3 (150) 150.0
 
June 12, 2019, 11 a.m. 8.0 ppb (7) 1.0 ppb (1) N/A 6.0 ppb (6) N/A N/A 27.0 ppb (21) N/A N/A 41.4 μg/m3 (115) 115.0
 
June 12, 2019, 10 a.m. 4.0 ppb (4) 0.0 ppb (0) N/A 3.0 ppb (3) N/A N/A 31.0 ppb (24) N/A N/A 36.7 μg/m3 (103) 103.0
 
June 12, 2019, 9 a.m. 3.0 ppb (3) 0.0 ppb (0) N/A 3.0 ppb (3) N/A N/A 35.0 ppb (27) N/A N/A 31.0 μg/m3 (90) 90.0
 
June 12, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 30.2 μg/m3 (89) 89.0
 
June 12, 2019, 7 a.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 41.0 ppb (32) N/A N/A 31.0 μg/m3 (90) 90.0
 
June 12, 2019, 6 a.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 43.0 ppb (33) N/A N/A 34.7 μg/m3 (98) 98.0
 
June 12, 2019, 5 a.m. 3.0 ppb (3) 1.0 ppb (1) N/A 2.0 ppb (2) N/A N/A 42.0 ppb (32) N/A N/A 24.3 μg/m3 (76) 76.0
 
June 12, 2019, 4 a.m. 4.0 ppb (4) 1.0 ppb (1) N/A 3.0 ppb (3) N/A N/A 41.0 ppb (32) N/A N/A 25.9 μg/m3 (80) 80.0
 
June 12, 2019, 3 a.m. 6.0 ppb (6) 1.0 ppb (1) N/A 5.0 ppb (5) N/A N/A 38.0 ppb (29) N/A N/A 18.9 μg/m3 (65) 65.0
 
June 12, 2019, 2 a.m. 3.0 ppb (3) 1.0 ppb (1) N/A 3.0 ppb (3) N/A N/A 44.0 ppb (34) N/A N/A 11.7 μg/m3 (49) 49.0
 
June 12, 2019, 1 a.m. 3.0 ppb (3) 1.0 ppb (1) N/A 2.0 ppb (2) N/A N/A 46.0 ppb (35) N/A N/A 9.6 μg/m3 (40) 40.0
 
June 12, 2019, midnight 2.0 ppb (2) 1.0 ppb (1) N/A 1.0 ppb (1) N/A N/A 49.0 ppb (38) N/A N/A 8.6 μg/m3 (36) 38.0
 
June 11, 2019, 11 p.m. 2.0 ppb (2) 1.0 ppb (1) N/A 1.0 ppb (1) N/A N/A 49.0 ppb (38) N/A N/A 9.1 μg/m3 (38) 38.0
 
June 11, 2019, 10 p.m. 2.0 ppb (2) 1.0 ppb (1) N/A 1.0 ppb (1) N/A N/A 48.0 ppb (37) N/A N/A 9.0 μg/m3 (38) 38.0
 
June 11, 2019, 9 p.m. 2.0 ppb (2) 1.0 ppb (1) N/A 1.0 ppb (1) N/A N/A 50.0 ppb (38) N/A N/A 7.6 μg/m3 (32) 38.0
 
June 11, 2019, 8 p.m. 1.0 ppb (1) 1.0 ppb (1) N/A 1.0 ppb (1) N/A N/A 49.0 ppb (38) N/A N/A 7.0 μg/m3 (29) 38.0
 
June 11, 2019, 7 p.m. 1.0 ppb (1) 1.0 ppb (1) N/A 1.0 ppb (1) N/A N/A 48.0 ppb (37) N/A N/A 6.9 μg/m3 (29) 37.0
 
June 11, 2019, 6 p.m. 2.0 ppb (2) 1.0 ppb (1) N/A 2.0 ppb (2) N/A N/A 51.0 ppb (39) N/A N/A 9.8 μg/m3 (41) 41.0
 
June 11, 2019, 5 p.m. 8.0 ppb (7) 3.0 ppb (3) N/A 6.0 ppb (6) N/A N/A 44.0 ppb (34) N/A N/A 14.2 μg/m3 (55) 55.0
 
June 11, 2019, 4 p.m. 13.0 ppb (12) 5.0 ppb (5) N/A 8.0 ppb (7) N/A N/A 39.0 ppb (30) N/A N/A 9.9 μg/m3 (41) 41.0