AQSQID: 490030003

Site Name: Brigham City

Location: Brigham City, UT

Reporting: True, Located: True

Current AQI: 104.0

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
Jan. 16, 2019, 11 p.m. 34.0 ppb (31) 8.0 ppb (7) N/A 26.0 ppb (24) N/A N/A 19.0 ppb (15) N/A N/A 37.1 μg/m3 (104) 104.0
 
Jan. 16, 2019, 10 p.m. 31.0 ppb (29) 10.0 ppb (9) N/A 21.0 ppb (19) N/A N/A 23.0 ppb (18) N/A N/A 30.4 μg/m3 (89) 89.0
 
Jan. 16, 2019, 9 p.m. 26.0 ppb (24) 9.0 ppb (8) N/A 17.0 ppb (16) N/A N/A 27.0 ppb (21) N/A N/A 31.4 μg/m3 (91) 91.0
 
Jan. 16, 2019, 8 p.m. 36.0 ppb (33) 16.0 ppb (15) N/A 20.0 ppb (19) N/A N/A 23.0 ppb (18) N/A N/A 36.8 μg/m3 (103) 103.0
 
Jan. 16, 2019, 7 p.m. 55.0 ppb (51) 27.0 ppb (25) N/A 28.0 ppb (26) N/A N/A 15.0 ppb (12) N/A N/A 39.8 μg/m3 (111) 111.0
 
Jan. 16, 2019, 6 p.m. 56.0 ppb (52) 25.0 ppb (23) N/A 30.0 ppb (28) N/A N/A 12.0 ppb (9) N/A N/A 42.4 μg/m3 (117) 117.0
 
Jan. 16, 2019, 5 p.m. 65.0 ppb (62) 31.0 ppb (29) N/A 33.0 ppb (31) N/A N/A 10.0 ppb (8) N/A N/A 43.4 μg/m3 (120) 120.0
 
Jan. 16, 2019, 4 p.m. 68.0 ppb (65) 30.0 ppb (28) N/A 37.0 ppb (34) N/A N/A 6.0 ppb (5) N/A N/A 40.5 μg/m3 (112) 112.0
 
Jan. 16, 2019, 3 p.m. 77.0 ppb (74) 35.0 ppb (32) N/A 42.0 ppb (39) N/A N/A 2.0 ppb (2) N/A N/A 37.6 μg/m3 (105) 105.0
 
Jan. 16, 2019, 2 p.m. 60.0 ppb (56) 18.0 ppb (17) N/A 42.0 ppb (39) N/A N/A 1.0 ppb (1) N/A N/A 33.8 μg/m3 (96) 96.0
 
Jan. 16, 2019, 1 p.m. 41.0 ppb (38) 5.0 ppb (5) N/A 37.0 ppb (34) N/A N/A 3.0 ppb (2) N/A N/A 29.1 μg/m3 (86) 86.0
 
Jan. 16, 2019, noon 35.0 ppb (32) 2.0 ppb (2) N/A 32.0 ppb (30) N/A N/A 7.0 ppb (5) N/A N/A 29.1 μg/m3 (86) 86.0
 
Jan. 16, 2019, 11 a.m. 27.0 ppb (25) 2.0 ppb (2) N/A 25.0 ppb (23) N/A N/A 15.0 ppb (12) N/A N/A 29.8 μg/m3 (88) 88.0
 
Jan. 16, 2019, 10 a.m. 29.0 ppb (27) 2.0 ppb (2) N/A 28.0 ppb (26) N/A N/A 11.0 ppb (8) N/A N/A 26.3 μg/m3 (80) 80.0
 
Jan. 16, 2019, 9 a.m. 24.0 ppb (22) 1.0 ppb (1) N/A 23.0 ppb (21) N/A N/A 16.0 ppb (12) N/A N/A 22.8 μg/m3 (73) 73.0
 
Jan. 16, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 18.3 μg/m3 (63) 63.0
 
Jan. 16, 2019, 7 a.m. 17.0 ppb (16) 1.0 ppb (1) N/A 16.0 ppb (15) N/A N/A 25.0 ppb (19) N/A N/A 16.0 μg/m3 (59) 59.0
 
Jan. 16, 2019, 6 a.m. 14.0 ppb (13) 1.0 ppb (1) N/A 13.0 ppb (12) N/A N/A 29.0 ppb (22) N/A N/A 15.3 μg/m3 (57) 57.0
 
Jan. 16, 2019, 5 a.m. 16.0 ppb (15) 1.0 ppb (1) N/A 16.0 ppb (15) N/A N/A 28.0 ppb (22) N/A N/A 15.1 μg/m3 (57) 57.0
 
Jan. 16, 2019, 4 a.m. 29.0 ppb (27) 1.0 ppb (1) N/A 28.0 ppb (26) N/A N/A 14.0 ppb (11) N/A N/A 16.2 μg/m3 (59) 59.0
 
Jan. 16, 2019, 3 a.m. 25.0 ppb (23) 2.0 ppb (2) N/A 23.0 ppb (21) N/A N/A 20.0 ppb (15) N/A N/A 12.0 μg/m3 (50) 50.0
 
Jan. 16, 2019, 2 a.m. 21.0 ppb (19) 2.0 ppb (2) N/A 19.0 ppb (18) N/A N/A 25.0 ppb (19) N/A N/A 13.1 μg/m3 (52) 52.0
 
Jan. 16, 2019, 1 a.m. 37.0 ppb (34) 3.0 ppb (3) N/A 34.0 ppb (31) N/A N/A 11.0 ppb (8) N/A N/A 12.4 μg/m3 (51) 51.0
 
Jan. 16, 2019, midnight 37.0 ppb (34) 4.0 ppb (4) N/A 33.0 ppb (31) N/A N/A 11.0 ppb (8) N/A N/A 15.7 μg/m3 (58) 58.0
 
Jan. 15, 2019, 11 p.m. 40.0 ppb (37) 10.0 ppb (9) N/A 30.0 ppb (28) N/A N/A 14.0 ppb (11) N/A N/A 21.1 μg/m3 (69) 69.0
 
Jan. 15, 2019, 10 p.m. 35.0 ppb (32) 11.0 ppb (10) N/A 25.0 ppb (23) N/A N/A 21.0 ppb (16) N/A N/A 19.7 μg/m3 (66) 66.0
 
Jan. 15, 2019, 9 p.m. 32.0 ppb (30) 10.0 ppb (9) N/A 22.0 ppb (20) N/A N/A 23.0 ppb (18) N/A N/A 20.5 μg/m3 (68) 68.0
 
Jan. 15, 2019, 8 p.m. 32.0 ppb (30) 13.0 ppb (12) N/A 19.0 ppb (18) N/A N/A 24.0 ppb (18) N/A N/A 18.8 μg/m3 (64) 64.0
 
Jan. 15, 2019, 7 p.m. 34.0 ppb (31) 14.0 ppb (13) N/A 20.0 ppb (19) N/A N/A 23.0 ppb (18) N/A N/A 16.9 μg/m3 (60) 60.0
 
Jan. 15, 2019, 6 p.m. 24.0 ppb (22) 9.0 ppb (8) N/A 16.0 ppb (15) N/A N/A 27.0 ppb (21) N/A N/A 15.6 μg/m3 (58) 58.0
 
Jan. 15, 2019, 5 p.m. 18.0 ppb (17) 5.0 ppb (5) N/A 14.0 ppb (13) N/A N/A 28.0 ppb (22) N/A N/A 14.7 μg/m3 (56) 56.0
 
Jan. 15, 2019, 4 p.m. 35.0 ppb (32) 11.0 ppb (10) N/A 23.0 ppb (21) N/A N/A 17.0 ppb (13) N/A N/A 17.2 μg/m3 (61) 61.0
 
Jan. 15, 2019, 3 p.m. 56.0 ppb (52) 21.0 ppb (19) N/A 35.0 ppb (32) N/A N/A 4.0 ppb (3) N/A N/A 20.6 μg/m3 (68) 68.0
 
Jan. 15, 2019, 2 p.m. 41.0 ppb (38) 8.0 ppb (7) N/A 33.0 ppb (31) N/A N/A 5.0 ppb (4) N/A N/A 21.6 μg/m3 (70) 70.0
 
Jan. 15, 2019, 1 p.m. 29.0 ppb (27) 3.0 ppb (3) N/A 27.0 ppb (25) N/A N/A 11.0 ppb (8) N/A N/A 22.8 μg/m3 (73) 73.0
 
Jan. 15, 2019, noon 31.0 ppb (29) 3.0 ppb (3) N/A 28.0 ppb (26) N/A N/A 9.0 ppb (7) N/A N/A 21.9 μg/m3 (71) 71.0
 
Jan. 15, 2019, 11 a.m. 31.0 ppb (29) 3.0 ppb (3) N/A 28.0 ppb (26) N/A N/A 9.0 ppb (7) N/A N/A 22.1 μg/m3 (71) 71.0
 
Jan. 15, 2019, 10 a.m. 28.0 ppb (26) 2.0 ppb (2) N/A 25.0 ppb (23) N/A N/A 11.0 ppb (8) N/A N/A 21.5 μg/m3 (70) 70.0
 
Jan. 15, 2019, 9 a.m. 47.0 ppb (44) 9.0 ppb (8) N/A 37.0 ppb (34) N/A N/A 3.0 ppb (2) N/A N/A 18.4 μg/m3 (64) 64.0
 
Jan. 15, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 18.6 μg/m3 (64) 64.0
 
Jan. 15, 2019, 7 a.m. 44.0 ppb (41) 8.0 ppb (7) N/A 36.0 ppb (33) N/A N/A 3.0 ppb (2) N/A N/A 19.3 μg/m3 (66) 66.0
 
Jan. 15, 2019, 6 a.m. 54.0 ppb (50) 15.0 ppb (14) N/A 39.0 ppb (36) N/A N/A 1.0 ppb (1) N/A N/A 20.1 μg/m3 (67) 67.0
 
Jan. 15, 2019, 5 a.m. 65.0 ppb (62) 24.0 ppb (22) N/A 41.0 ppb (38) N/A N/A 1.0 ppb (1) N/A N/A 20.4 μg/m3 (68) 68.0
 
Jan. 15, 2019, 4 a.m. 55.0 ppb (51) 15.0 ppb (14) N/A 40.0 ppb (37) N/A N/A 1.0 ppb (1) N/A N/A 17.4 μg/m3 (61) 61.0
 
Jan. 15, 2019, 3 a.m. 58.0 ppb (54) 18.0 ppb (17) N/A 40.0 ppb (37) N/A N/A 1.0 ppb (1) N/A N/A 16.8 μg/m3 (60) 60.0
 
Jan. 15, 2019, 2 a.m. 43.0 ppb (40) 6.0 ppb (6) N/A 37.0 ppb (34) N/A N/A 4.0 ppb (3) N/A N/A 18.2 μg/m3 (63) 63.0
 
Jan. 15, 2019, 1 a.m. 34.0 ppb (31) 4.0 ppb (4) N/A 30.0 ppb (28) N/A N/A 11.0 ppb (8) N/A N/A 19.1 μg/m3 (65) 65.0
 
Jan. 15, 2019, midnight 18.0 ppb (17) 2.0 ppb (2) N/A 16.0 ppb (15) N/A N/A 25.0 ppb (19) N/A N/A 16.9 μg/m3 (60) 60.0
 
Jan. 14, 2019, 11 p.m. 11.0 ppb (10) 2.0 ppb (2) N/A 8.0 ppb (7) N/A N/A 33.0 ppb (25) N/A N/A 14.0 μg/m3 (54) 54.0
 
Jan. 14, 2019, 10 p.m. 10.0 ppb (9) 4.0 ppb (4) N/A 7.0 ppb (6) N/A N/A 34.0 ppb (26) N/A N/A 15.7 μg/m3 (58) 58.0
 
Jan. 14, 2019, 9 p.m. 12.0 ppb (11) 5.0 ppb (5) N/A 8.0 ppb (7) N/A N/A 33.0 ppb (25) N/A N/A 16.7 μg/m3 (60) 60.0
 
Jan. 14, 2019, 8 p.m. 8.0 ppb (7) 3.0 ppb (3) N/A 5.0 ppb (5) N/A N/A 37.0 ppb (28) N/A N/A 14.9 μg/m3 (56) 56.0
 
Jan. 14, 2019, 7 p.m. 10.0 ppb (9) 4.0 ppb (4) N/A 6.0 ppb (6) N/A N/A 36.0 ppb (28) N/A N/A 15.0 μg/m3 (56) 56.0
 
Jan. 14, 2019, 6 p.m. 17.0 ppb (16) 8.0 ppb (7) N/A 9.0 ppb (8) N/A N/A 33.0 ppb (25) N/A N/A 16.6 μg/m3 (60) 60.0
 
Jan. 14, 2019, 5 p.m. 9.0 ppb (8) 4.0 ppb (4) N/A 5.0 ppb (5) N/A N/A 35.0 ppb (27) N/A N/A 18.5 μg/m3 (64) 64.0
 
Jan. 14, 2019, 4 p.m. 20.0 ppb (19) 7.0 ppb (6) N/A 13.0 ppb (12) N/A N/A 27.0 ppb (21) N/A N/A 19.3 μg/m3 (66) 66.0
 
Jan. 14, 2019, 3 p.m. 18.0 ppb (17) 4.0 ppb (4) N/A 14.0 ppb (13) N/A N/A 26.0 ppb (20) N/A N/A 14.3 μg/m3 (55) 55.0
 
Jan. 14, 2019, 2 p.m. 15.0 ppb (14) 3.0 ppb (3) N/A 12.0 ppb (11) N/A N/A 27.0 ppb (21) N/A N/A 12.9 μg/m3 (52) 52.0
 
Jan. 14, 2019, 1 p.m. 11.0 ppb (10) 3.0 ppb (3) N/A 9.0 ppb (8) N/A N/A 31.0 ppb (24) N/A N/A 12.4 μg/m3 (51) 51.0
 
Jan. 14, 2019, noon 8.0 ppb (7) 1.0 ppb (1) N/A 7.0 ppb (6) N/A N/A 32.0 ppb (25) N/A N/A 14.5 μg/m3 (55) 55.0
 
Jan. 14, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) N/A N/A 14.5 μg/m3 (55) 55.0
 
Jan. 14, 2019, 10 a.m. 9.0 ppb (8) 1.0 ppb (1) N/A 8.0 ppb (7) N/A N/A 31.0 ppb (24) N/A N/A 16.2 μg/m3 (59) 59.0
 
Jan. 14, 2019, 9 a.m. 10.0 ppb (9) 1.0 ppb (1) N/A 8.0 ppb (7) N/A N/A 31.0 ppb (24) N/A N/A 13.0 μg/m3 (52) 52.0
 
Jan. 14, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 12.3 μg/m3 (51) 51.0
 
Jan. 14, 2019, 7 a.m. 5.0 ppb (5) 1.0 ppb (1) N/A 5.0 ppb (5) N/A N/A 35.0 ppb (27) N/A N/A 10.7 μg/m3 (45) 45.0
 
Jan. 14, 2019, 6 a.m. 7.0 ppb (6) 1.0 ppb (1) N/A 6.0 ppb (6) N/A N/A 33.0 ppb (25) N/A N/A 10.4 μg/m3 (43) 43.0
 
Jan. 14, 2019, 5 a.m. 8.0 ppb (7) 1.0 ppb (1) N/A 6.0 ppb (6) N/A N/A 32.0 ppb (25) N/A N/A 10.0 μg/m3 (42) 42.0
 
Jan. 14, 2019, 4 a.m. 6.0 ppb (6) 1.0 ppb (1) N/A 6.0 ppb (6) N/A N/A 33.0 ppb (25) N/A N/A 9.3 μg/m3 (39) 39.0
 
Jan. 14, 2019, 3 a.m. 9.0 ppb (8) 1.0 ppb (1) N/A 8.0 ppb (7) N/A N/A 32.0 ppb (25) N/A N/A 10.7 μg/m3 (45) 45.0
 
Jan. 14, 2019, 2 a.m. 9.0 ppb (8) 2.0 ppb (2) N/A 8.0 ppb (7) N/A N/A 32.0 ppb (25) N/A N/A 11.0 μg/m3 (46) 46.0
 
Jan. 14, 2019, 1 a.m. 8.0 ppb (7) 1.0 ppb (1) N/A 7.0 ppb (6) N/A N/A 33.0 ppb (25) N/A N/A 9.9 μg/m3 (41) 41.0
 
Jan. 14, 2019, midnight 6.0 ppb (6) 1.0 ppb (1) N/A 5.0 ppb (5) N/A N/A 36.0 ppb (28) N/A N/A 10.3 μg/m3 (43) 43.0
 
Jan. 13, 2019, 11 p.m. 6.0 ppb (6) 1.0 ppb (1) N/A 5.0 ppb (5) N/A N/A 36.0 ppb (28) N/A N/A 8.6 μg/m3 (36) 36.0
 
Jan. 13, 2019, 10 p.m. 7.0 ppb (6) 2.0 ppb (2) N/A 5.0 ppb (5) N/A N/A 36.0 ppb (28) N/A N/A 7.8 μg/m3 (32) 32.0
 
Jan. 13, 2019, 9 p.m. 7.0 ppb (6) 2.0 ppb (2) N/A 5.0 ppb (5) N/A N/A 36.0 ppb (28) N/A N/A 7.5 μg/m3 (31) 31.0
 
Jan. 13, 2019, 8 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 8.6 μg/m3 (36) 36.0
 
Jan. 13, 2019, 7 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 7.8 μg/m3 (32) 32.0
 
Jan. 13, 2019, 6 p.m. 7.0 ppb (6) 2.0 ppb (2) N/A 5.0 ppb (5) N/A N/A 34.0 ppb (26) N/A N/A 7.8 μg/m3 (32) 32.0
 
Jan. 13, 2019, 5 p.m. 10.0 ppb (9) 3.0 ppb (3) N/A 7.0 ppb (6) N/A N/A 32.0 ppb (25) N/A N/A 8.9 μg/m3 (37) 37.0
 
Jan. 13, 2019, 4 p.m. 13.0 ppb (12) 4.0 ppb (4) N/A 9.0 ppb (8) N/A N/A 29.0 ppb (22) N/A N/A 8.1 μg/m3 (34) 34.0
 
Jan. 13, 2019, 3 p.m. 13.0 ppb (12) 2.0 ppb (2) N/A 11.0 ppb (10) N/A N/A 27.0 ppb (21) N/A N/A 9.7 μg/m3 (40) 40.0
 
Jan. 13, 2019, 2 p.m. 12.0 ppb (11) 1.0 ppb (1) N/A 11.0 ppb (10) N/A N/A 27.0 ppb (21) N/A N/A 10.1 μg/m3 (42) 42.0
 
Jan. 13, 2019, 1 p.m. 8.0 ppb (7) 1.0 ppb (1) N/A 7.0 ppb (6) N/A N/A 32.0 ppb (25) N/A N/A 9.2 μg/m3 (38) 38.0
 
Jan. 13, 2019, noon 8.0 ppb (7) 1.0 ppb (1) N/A 7.0 ppb (6) N/A N/A 32.0 ppb (25) N/A N/A 10.8 μg/m3 (45) 45.0
 
Jan. 13, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) N/A N/A 13.0 μg/m3 (52) 52.0
 
Jan. 13, 2019, 10 a.m. 9.0 ppb (8) 2.0 ppb (2) N/A 8.0 ppb (7) N/A N/A 31.0 ppb (24) N/A N/A 11.9 μg/m3 (50) 50.0
 
Jan. 13, 2019, 9 a.m. 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 11.6 μg/m3 (48) 48.0
 
Jan. 13, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 12.0 μg/m3 (50) 50.0
 
Jan. 13, 2019, 7 a.m. 6.0 ppb (6) 1.0 ppb (1) N/A 6.0 ppb (6) N/A N/A 33.0 ppb (25) N/A N/A 11.7 μg/m3 (49) 49.0
 
Jan. 13, 2019, 6 a.m. 6.0 ppb (6) 1.0 ppb (1) N/A 6.0 ppb (6) N/A N/A 33.0 ppb (25) N/A N/A 10.6 μg/m3 (44) 44.0
 
Jan. 13, 2019, 5 a.m. 7.0 ppb (6) 1.0 ppb (1) N/A 6.0 ppb (6) N/A N/A 33.0 ppb (25) N/A N/A 10.4 μg/m3 (43) 43.0
 
Jan. 13, 2019, 4 a.m. 9.0 ppb (8) 1.0 ppb (1) N/A 8.0 ppb (7) N/A N/A 32.0 ppb (25) N/A N/A 12.3 μg/m3 (51) 51.0
 
Jan. 13, 2019, 3 a.m. 8.0 ppb (7) 1.0 ppb (1) N/A 7.0 ppb (6) N/A N/A 32.0 ppb (25) N/A N/A 12.7 μg/m3 (51) 51.0
 
Jan. 13, 2019, 2 a.m. 6.0 ppb (6) 1.0 ppb (1) N/A 6.0 ppb (6) N/A N/A 33.0 ppb (25) N/A N/A 11.5 μg/m3 (48) 48.0
 
Jan. 13, 2019, 1 a.m. 7.0 ppb (6) 1.0 ppb (1) N/A 7.0 ppb (6) N/A N/A 32.0 ppb (25) N/A N/A 13.9 μg/m3 (54) 54.0
 
Jan. 13, 2019, midnight 8.0 ppb (7) 1.0 ppb (1) N/A 7.0 ppb (6) N/A N/A 31.0 ppb (24) N/A N/A 13.5 μg/m3 (53) 53.0
 
Jan. 12, 2019, 11 p.m. 8.0 ppb (7) 1.0 ppb (1) N/A 7.0 ppb (6) N/A N/A 32.0 ppb (25) N/A N/A 11.2 μg/m3 (47) 47.0
 
Jan. 12, 2019, 10 p.m. 8.0 ppb (7) 1.0 ppb (1) N/A 6.0 ppb (6) N/A N/A 33.0 ppb (25) N/A N/A 8.8 μg/m3 (37) 37.0
 
Jan. 12, 2019, 9 p.m. 8.0 ppb (7) 2.0 ppb (2) N/A 6.0 ppb (6) N/A N/A 34.0 ppb (26) N/A N/A 8.3 μg/m3 (35) 35.0
 
Jan. 12, 2019, 8 p.m. 7.0 ppb (6) 2.0 ppb (2) N/A 5.0 ppb (5) N/A N/A 34.0 ppb (26) N/A N/A 9.1 μg/m3 (38) 38.0
 
Jan. 12, 2019, 7 p.m. 8.0 ppb (7) 2.0 ppb (2) N/A 6.0 ppb (6) N/A N/A 33.0 ppb (25) N/A N/A 10.1 μg/m3 (42) 42.0
 
Jan. 12, 2019, 6 p.m. 6.0 ppb (6) 1.0 ppb (1) N/A 5.0 ppb (5) N/A N/A 34.0 ppb (26) N/A N/A 9.6 μg/m3 (40) 40.0
 
Jan. 12, 2019, 5 p.m. 7.0 ppb (6) 1.0 ppb (1) N/A 6.0 ppb (6) N/A N/A 33.0 ppb (25) N/A N/A 9.7 μg/m3 (40) 40.0
 
Jan. 12, 2019, 4 p.m. 8.0 ppb (7) 1.0 ppb (1) N/A 7.0 ppb (6) N/A N/A 32.0 ppb (25) N/A N/A 10.8 μg/m3 (45) 45.0
 
Jan. 12, 2019, 3 p.m. 11.0 ppb (10) 2.0 ppb (2) N/A 9.0 ppb (8) N/A N/A 29.0 ppb (22) N/A N/A 9.6 μg/m3 (40) 40.0
 
Jan. 12, 2019, 2 p.m. 9.0 ppb (8) 1.0 ppb (1) N/A 8.0 ppb (7) N/A N/A 31.0 ppb (24) N/A N/A 9.5 μg/m3 (40) 40.0
 
Jan. 12, 2019, 1 p.m. 12.0 ppb (11) 2.0 ppb (2) N/A 10.0 ppb (9) N/A N/A 29.0 ppb (22) N/A N/A 9.1 μg/m3 (38) 38.0
 
Jan. 12, 2019, noon 10.0 ppb (9) 1.0 ppb (1) N/A 9.0 ppb (8) N/A N/A 29.0 ppb (22) N/A N/A 9.6 μg/m3 (40) 40.0
 
Jan. 12, 2019, 11 a.m. 12.0 ppb (11) 1.0 ppb (1) N/A 10.0 ppb (9) N/A N/A N/A N/A N/A 9.5 μg/m3 (40) 40.0
 
Jan. 12, 2019, 10 a.m. 10.0 ppb (9) 1.0 ppb (1) N/A 9.0 ppb (8) N/A N/A 29.0 ppb (22) N/A N/A 8.2 μg/m3 (34) 34.0
 
Jan. 12, 2019, 9 a.m. 9.0 ppb (8) 1.0 ppb (1) N/A 9.0 ppb (8) N/A N/A 31.0 ppb (24) N/A N/A 7.9 μg/m3 (33) 33.0
 
Jan. 12, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 10.5 μg/m3 (44) 44.0
 
Jan. 12, 2019, 7 a.m. 12.0 ppb (11) 2.0 ppb (2) N/A 10.0 ppb (9) N/A N/A 30.0 ppb (23) N/A N/A 6.0 μg/m3 (25) 25.0
 
Jan. 12, 2019, 6 a.m. 14.0 ppb (13) 2.0 ppb (2) N/A 12.0 ppb (11) N/A N/A 28.0 ppb (22) N/A N/A 6.5 μg/m3 (27) 27.0
 
Jan. 12, 2019, 5 a.m. 19.0 ppb (18) 2.0 ppb (2) N/A 16.0 ppb (15) N/A N/A 23.0 ppb (18) N/A N/A 11.2 μg/m3 (47) 47.0
 
Jan. 12, 2019, 4 a.m. 19.0 ppb (18) 2.0 ppb (2) N/A 17.0 ppb (16) N/A N/A 23.0 ppb (18) N/A N/A 10.8 μg/m3 (45) 45.0
 
Jan. 12, 2019, 3 a.m. 20.0 ppb (19) 2.0 ppb (2) N/A 19.0 ppb (18) N/A N/A 22.0 ppb (17) N/A N/A 16.4 μg/m3 (59) 59.0
 
Jan. 12, 2019, 2 a.m. 19.0 ppb (18) 1.0 ppb (1) N/A 18.0 ppb (17) N/A N/A 21.0 ppb (16) N/A N/A 21.1 μg/m3 (69) 69.0
 
Jan. 12, 2019, 1 a.m. 19.0 ppb (18) 1.0 ppb (1) N/A 19.0 ppb (18) N/A N/A 20.0 ppb (15) N/A N/A 20.4 μg/m3 (68) 68.0
 
Jan. 12, 2019, midnight 21.0 ppb (19) 1.0 ppb (1) N/A 20.0 ppb (19) N/A N/A 20.0 ppb (15) N/A N/A 21.3 μg/m3 (70) 70.0
 
Jan. 11, 2019, 11 p.m. 22.0 ppb (20) 3.0 ppb (3) N/A 19.0 ppb (18) N/A N/A 20.0 ppb (15) N/A N/A 26.5 μg/m3 (81) 81.0
 
Jan. 11, 2019, 10 p.m. 22.0 ppb (20) 5.0 ppb (5) N/A 17.0 ppb (16) N/A N/A 21.0 ppb (16) N/A N/A 30.7 μg/m3 (90) 90.0
 
Jan. 11, 2019, 9 p.m. 25.0 ppb (23) 7.0 ppb (6) N/A 18.0 ppb (17) N/A N/A 19.0 ppb (15) N/A N/A 35.4 μg/m3 (100) 100.0
 
Jan. 11, 2019, 8 p.m. 27.0 ppb (25) 7.0 ppb (6) N/A 19.0 ppb (18) N/A N/A 19.0 ppb (15) N/A N/A 34.8 μg/m3 (99) 99.0
 
Jan. 11, 2019, 7 p.m. 35.0 ppb (32) 16.0 ppb (15) N/A 20.0 ppb (19) N/A N/A 17.0 ppb (13) N/A N/A 34.2 μg/m3 (97) 97.0
 
Jan. 11, 2019, 6 p.m. 40.0 ppb (37) 19.0 ppb (18) N/A 21.0 ppb (19) N/A N/A 15.0 ppb (12) N/A N/A 46.5 μg/m3 (128) 128.0
 
Jan. 11, 2019, 5 p.m. 41.0 ppb (38) 17.0 ppb (16) N/A 24.0 ppb (22) N/A N/A 9.0 ppb (7) N/A N/A 46.7 μg/m3 (128) 128.0
 
Jan. 11, 2019, 4 p.m. 47.0 ppb (44) 20.0 ppb (19) N/A 26.0 ppb (24) N/A N/A 5.0 ppb (4) N/A N/A 45.2 μg/m3 (124) 124.0
 
Jan. 11, 2019, 3 p.m. 41.0 ppb (38) 13.0 ppb (12) N/A 28.0 ppb (26) N/A N/A 2.0 ppb (2) N/A N/A 33.9 μg/m3 (97) 97.0
 
Jan. 11, 2019, 2 p.m. 31.0 ppb (29) 4.0 ppb (4) N/A 27.0 ppb (25) N/A N/A 2.0 ppb (2) N/A N/A 42.5 μg/m3 (118) 118.0
 
Jan. 11, 2019, 1 p.m. 38.0 ppb (35) 6.0 ppb (6) N/A 32.0 ppb (30) N/A N/A 2.0 ppb (2) N/A N/A 47.9 μg/m3 (131) 131.0
 
Jan. 11, 2019, noon 33.0 ppb (31) 3.0 ppb (3) N/A 30.0 ppb (28) N/A N/A 3.0 ppb (2) N/A N/A 46.4 μg/m3 (127) 127.0
 
Jan. 11, 2019, 11 a.m. 30.0 ppb (28) 2.0 ppb (2) N/A 28.0 ppb (26) N/A N/A 4.0 ppb (3) N/A N/A 39.5 μg/m3 (110) 110.0
 
Jan. 11, 2019, 10 a.m. 36.0 ppb (33) 6.0 ppb (6) N/A 31.0 ppb (29) N/A N/A 2.0 ppb (2) N/A N/A 37.0 μg/m3 (104) 104.0
 
Jan. 11, 2019, 9 a.m. 42.0 ppb (39) 7.0 ppb (6) N/A 35.0 ppb (32) N/A N/A 0.0 ppb (0) N/A N/A 32.2 μg/m3 (93) 93.0
 
Jan. 11, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 30.5 μg/m3 (89) 89.0
 
Jan. 11, 2019, 7 a.m. 30.0 ppb (28) 2.0 ppb (2) N/A 28.0 ppb (26) N/A N/A 9.0 ppb (7) N/A N/A 33.2 μg/m3 (95) 95.0
 
Jan. 11, 2019, 6 a.m. 37.0 ppb (34) 3.0 ppb (3) N/A 34.0 ppb (31) N/A N/A 5.0 ppb (4) N/A N/A 40.1 μg/m3 (112) 112.0
 
Jan. 11, 2019, 5 a.m. 53.0 ppb (49) 13.0 ppb (12) N/A 40.0 ppb (37) N/A N/A 2.0 ppb (2) N/A N/A 36.8 μg/m3 (103) 103.0
 
Jan. 11, 2019, 4 a.m. 58.0 ppb (54) 15.0 ppb (14) N/A 42.0 ppb (39) N/A N/A 0.0 ppb (0) N/A N/A 34.1 μg/m3 (97) 97.0
 
Jan. 11, 2019, 3 a.m. 51.0 ppb (47) 10.0 ppb (9) N/A 41.0 ppb (38) N/A N/A 1.0 ppb (1) N/A N/A 33.2 μg/m3 (95) 95.0
 
Jan. 11, 2019, 2 a.m. 40.0 ppb (37) 3.0 ppb (3) N/A 37.0 ppb (34) N/A N/A 4.0 ppb (3) N/A N/A 34.6 μg/m3 (98) 98.0
 
Jan. 11, 2019, 1 a.m. 46.0 ppb (43) 6.0 ppb (6) N/A 40.0 ppb (37) N/A N/A 3.0 ppb (2) N/A N/A 35.5 μg/m3 (100) 100.0
 
Jan. 11, 2019, midnight 50.0 ppb (46) 9.0 ppb (8) N/A 41.0 ppb (38) N/A N/A 3.0 ppb (2) N/A N/A 36.8 μg/m3 (103) 103.0
 
Jan. 10, 2019, 11 p.m. 56.0 ppb (52) 17.0 ppb (16) N/A 39.0 ppb (36) N/A N/A 7.0 ppb (5) N/A N/A 37.9 μg/m3 (106) 106.0
 
Jan. 10, 2019, 10 p.m. 46.0 ppb (43) 13.0 ppb (12) N/A 33.0 ppb (31) N/A N/A 11.0 ppb (8) N/A N/A 41.6 μg/m3 (115) 115.0
 
Jan. 10, 2019, 9 p.m. 33.0 ppb (31) 8.0 ppb (7) N/A 24.0 ppb (22) N/A N/A 19.0 ppb (15) N/A N/A 37.9 μg/m3 (106) 106.0
 
Jan. 10, 2019, 8 p.m. 35.0 ppb (32) 13.0 ppb (12) N/A 22.0 ppb (20) N/A N/A 21.0 ppb (16) N/A N/A 35.6 μg/m3 (100) 100.0
 
Jan. 10, 2019, 7 p.m. 41.0 ppb (38) 17.0 ppb (16) N/A 24.0 ppb (22) N/A N/A 18.0 ppb (14) N/A N/A 40.0 μg/m3 (111) 111.0
 
Jan. 10, 2019, 6 p.m. 41.0 ppb (38) 17.0 ppb (16) N/A 24.0 ppb (22) N/A N/A 16.0 ppb (12) N/A N/A 41.7 μg/m3 (116) 116.0
 
Jan. 10, 2019, 5 p.m. 72.0 ppb (69) 39.0 ppb (36) N/A 33.0 ppb (31) N/A N/A 8.0 ppb (6) N/A N/A 43.6 μg/m3 (120) 120.0
 
Jan. 10, 2019, 4 p.m. 69.0 ppb (66) 35.0 ppb (32) N/A 34.0 ppb (31) N/A N/A 5.0 ppb (4) N/A N/A 38.2 μg/m3 (107) 107.0
 
Jan. 10, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 20.4 μg/m3 (68) 68.0
 
Jan. 10, 2019, 2 p.m. 123.0 ppb (104) 82.0 ppb (80) N/A 41.0 ppb (38) N/A N/A 0.0 ppb (0) N/A N/A 19.0 μg/m3 (65) 104.0
 
Jan. 10, 2019, 1 p.m. 55.0 ppb (51) 20.0 ppb (19) N/A 36.0 ppb (33) N/A N/A 3.0 ppb (2) N/A N/A 7.3 μg/m3 (30) 51.0
 
Jan. 10, 2019, noon 60.0 ppb (56) 21.0 ppb (19) N/A 39.0 ppb (36) N/A N/A 1.0 ppb (1) N/A N/A 12.9 μg/m3 (52) 56.0
 
Jan. 10, 2019, 11 a.m. 62.0 ppb (59) 22.0 ppb (20) N/A 39.0 ppb (36) N/A N/A 0.0 ppb (0) N/A N/A 19.5 μg/m3 (66) 66.0
 
Jan. 10, 2019, 10 a.m. 65.0 ppb (62) 25.0 ppb (23) N/A 40.0 ppb (37) N/A N/A 0.0 ppb (0) N/A N/A 16.5 μg/m3 (60) 62.0
 
Jan. 10, 2019, 9 a.m. 63.0 ppb (60) 22.0 ppb (20) N/A 41.0 ppb (38) N/A N/A 0.0 ppb (0) N/A N/A 20.6 μg/m3 (68) 68.0
 
Jan. 10, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 22.0 μg/m3 (71) 71.0
 
Jan. 10, 2019, 7 a.m. 62.0 ppb (59) 20.0 ppb (19) N/A 42.0 ppb (39) N/A N/A 0.0 ppb (0) N/A N/A 17.9 μg/m3 (63) 63.0
 
Jan. 10, 2019, 6 a.m. 68.0 ppb (65) 25.0 ppb (23) N/A 42.0 ppb (39) N/A N/A 0.0 ppb (0) N/A N/A 19.0 μg/m3 (65) 65.0
 
Jan. 10, 2019, 5 a.m. 60.0 ppb (56) 18.0 ppb (17) N/A 41.0 ppb (38) N/A N/A 2.0 ppb (2) N/A N/A 18.8 μg/m3 (64) 64.0
 
Jan. 10, 2019, 4 a.m. 85.0 ppb (83) 40.0 ppb (37) N/A 44.0 ppb (41) N/A N/A 1.0 ppb (1) N/A N/A 23.4 μg/m3 (74) 83.0
 
Jan. 10, 2019, 3 a.m. 61.0 ppb (57) 19.0 ppb (18) N/A 42.0 ppb (39) N/A N/A 3.0 ppb (2) N/A N/A 29.5 μg/m3 (87) 87.0
 
Jan. 10, 2019, 2 a.m. 58.0 ppb (54) 21.0 ppb (19) N/A 37.0 ppb (34) N/A N/A 9.0 ppb (7) N/A N/A 33.7 μg/m3 (96) 96.0
 
Jan. 10, 2019, 1 a.m. 88.0 ppb (86) 41.0 ppb (38) N/A 47.0 ppb (44) N/A N/A 1.0 ppb (1) N/A N/A 33.4 μg/m3 (96) 96.0
 
Jan. 10, 2019, midnight 71.0 ppb (68) 26.0 ppb (24) N/A 45.0 ppb (42) N/A N/A 3.0 ppb (2) N/A N/A 27.4 μg/m3 (83) 83.0