AQSQID: 490570002

Site Name: Ogden #2

Location: Ogden, UT

Reporting: True, Located: True

Current AQI: 30.0

Ogden UT, US: 41.206402, -111.975197

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
Jan. 22, 2019, 6 a.m. 6.0 ppb (6) 1.0 ppb (1) N/A 5.0 ppb (5) N/A N/A 39.0 ppb (30) N/A -2.0 μg/m3 (0) 1.0 μg/m3 (4) 30.0
 
Jan. 22, 2019, 5 a.m. 7.0 ppb (6) 1.0 ppb (1) N/A 6.0 ppb (6) N/A N/A 37.0 ppb (28) N/A -2.0 μg/m3 (0) 1.3 μg/m3 (5) 28.0
 
Jan. 22, 2019, 4 a.m. 8.0 ppb (7) 1.0 ppb (1) N/A 7.0 ppb (6) N/A N/A 36.0 ppb (28) N/A -1.0 μg/m3 (0) 1.5 μg/m3 (6) 28.0
 
Jan. 22, 2019, 3 a.m. 12.0 ppb (11) 1.0 ppb (1) N/A 11.0 ppb (10) N/A N/A 32.0 ppb (25) N/A -1.0 μg/m3 (0) 1.4 μg/m3 (6) 25.0
 
Jan. 22, 2019, 2 a.m. 8.0 ppb (7) 1.0 ppb (1) N/A 7.0 ppb (6) N/A N/A 35.0 ppb (27) N/A -1.0 μg/m3 (0) 1.1 μg/m3 (5) 27.0
 
Jan. 22, 2019, 1 a.m. 8.0 ppb (7) 1.0 ppb (1) N/A 7.0 ppb (6) N/A N/A 34.0 ppb (26) N/A -2.0 μg/m3 (0) 1.0 μg/m3 (4) 26.0
 
Jan. 22, 2019, midnight 9.0 ppb (8) 2.0 ppb (2) N/A 7.0 ppb (6) N/A N/A 35.0 ppb (27) N/A -1.0 μg/m3 (0) 1.1 μg/m3 (5) 27.0
 
Jan. 21, 2019, 11 p.m. 9.0 ppb (8) 3.0 ppb (3) N/A 6.0 ppb (6) N/A N/A 35.0 ppb (27) N/A -1.0 μg/m3 (0) 1.0 μg/m3 (4) 27.0
 
Jan. 21, 2019, 10 p.m. 8.0 ppb (7) 4.0 ppb (4) N/A 5.0 ppb (5) N/A N/A 37.0 ppb (28) N/A -2.0 μg/m3 (0) 0.9 μg/m3 (4) 28.0
 
Jan. 21, 2019, 9 p.m. 10.0 ppb (9) 5.0 ppb (5) N/A 5.0 ppb (5) N/A N/A 35.0 ppb (27) N/A -2.0 μg/m3 (0) 0.8 μg/m3 (3) 27.0
 
Jan. 21, 2019, 8 p.m. 10.0 ppb (9) 5.0 ppb (5) N/A 6.0 ppb (6) N/A N/A 35.0 ppb (27) N/A -2.0 μg/m3 (0) 0.9 μg/m3 (4) 27.0
 
Jan. 21, 2019, 7 p.m. 11.0 ppb (10) 5.0 ppb (5) N/A 6.0 ppb (6) N/A N/A 35.0 ppb (27) N/A -1.0 μg/m3 (0) 1.0 μg/m3 (4) 27.0
 
Jan. 21, 2019, 6 p.m. 11.0 ppb (10) 5.0 ppb (5) N/A 6.0 ppb (6) N/A N/A 37.0 ppb (28) N/A -4.0 μg/m3 (0) 1.0 μg/m3 (4) 28.0
 
Jan. 21, 2019, 5 p.m. 13.0 ppb (12) 6.0 ppb (6) N/A 7.0 ppb (6) N/A N/A 37.0 ppb (28) N/A -2.0 μg/m3 (0) 0.9 μg/m3 (4) 28.0
 
Jan. 21, 2019, 4 p.m. 29.0 ppb (27) 15.0 ppb (14) N/A 15.0 ppb (14) N/A N/A 28.0 ppb (22) N/A 4.0 μg/m3 (4) 2.0 μg/m3 (8) 27.0
 
Jan. 21, 2019, 3 p.m. 46.0 ppb (43) 21.0 ppb (19) N/A 24.0 ppb (22) N/A N/A 15.0 ppb (12) 0.0 ppb (0) 0.0 μg/m3 (0) 2.8 μg/m3 (12) 43.0
 
Jan. 21, 2019, 2 p.m. 49.0 ppb (45) 22.0 ppb (20) N/A 27.0 ppb (25) N/A N/A 11.0 ppb (8) 0.0 ppb (0) 2.0 μg/m3 (2) 2.3 μg/m3 (10) 45.0
 
Jan. 21, 2019, 1 p.m. 68.0 ppb (65) 37.0 ppb (34) N/A 32.0 ppb (30) N/A N/A 9.0 ppb (7) 0.0 ppb (0) 3.0 μg/m3 (3) 3.8 μg/m3 (16) 65.0
 
Jan. 21, 2019, noon 31.0 ppb (29) 11.0 ppb (10) N/A 20.0 ppb (19) N/A N/A 16.0 ppb (12) N/A 1.0 μg/m3 (1) 2.9 μg/m3 (12) 29.0
 
Jan. 21, 2019, 11 a.m. 38.0 ppb (35) 11.0 ppb (10) N/A 28.0 ppb (26) N/A N/A 9.0 ppb (7) N/A 2.0 μg/m3 (2) 3.5 μg/m3 (15) 35.0
 
Jan. 21, 2019, 10 a.m. 44.0 ppb (41) 15.0 ppb (14) N/A 29.0 ppb (27) N/A N/A 7.0 ppb (5) 0.0 ppb (0) 6.0 μg/m3 (5) 3.0 μg/m3 (12) 41.0
 
Jan. 21, 2019, 9 a.m. 29.0 ppb (27) 5.0 ppb (5) N/A 25.0 ppb (23) N/A N/A 9.0 ppb (7) 0.0 ppb (0) -1.0 μg/m3 (0) 2.1 μg/m3 (9) 27.0
 
Jan. 21, 2019, 8 a.m. 23.0 ppb (21) 3.0 ppb (3) N/A 21.0 ppb (19) N/A N/A 15.0 ppb (12) 0.0 ppb (0) 1.0 μg/m3 (1) 2.5 μg/m3 (10) 21.0
 
Jan. 21, 2019, 7 a.m. 31.0 ppb (29) 5.0 ppb (5) N/A 26.0 ppb (24) N/A N/A 11.0 ppb (8) 0.0 ppb (0) 1.0 μg/m3 (1) 2.8 μg/m3 (12) 29.0
 
Jan. 21, 2019, 6 a.m. 9.0 ppb (8) 1.0 ppb (1) N/A 8.0 ppb (7) N/A N/A 30.0 ppb (23) N/A -3.0 μg/m3 (0) 1.3 μg/m3 (5) 23.0
 
Jan. 21, 2019, 5 a.m. 56.0 ppb (52) 32.0 ppb (30) N/A 25.0 ppb (23) N/A N/A 12.0 ppb (9) 0.2 ppb (2) 8.0 μg/m3 (7) 8.6 μg/m3 (36) 52.0
 
Jan. 21, 2019, 4 a.m. 98.0 ppb (97) 69.0 ppb (66) N/A 30.0 ppb (28) N/A N/A 6.0 ppb (5) 0.8 ppb (9) 15.0 μg/m3 (14) 11.5 μg/m3 (48) 97.0
 
Jan. 21, 2019, 3 a.m. 106.0 ppb (101) 77.0 ppb (74) N/A 30.0 ppb (28) N/A N/A 6.0 ppb (5) 0.8 ppb (9) 14.0 μg/m3 (13) 10.6 μg/m3 (44) 101.0
 
Jan. 21, 2019, 2 a.m. 96.0 ppb (95) 63.0 ppb (60) N/A 32.0 ppb (30) N/A N/A 6.0 ppb (5) 0.6 ppb (7) 24.0 μg/m3 (22) 14.4 μg/m3 (55) 95.0
 
Jan. 21, 2019, 1 a.m. 71.0 ppb (68) 38.0 ppb (35) N/A 33.0 ppb (31) N/A N/A 6.0 ppb (5) 0.5 ppb (6) 18.0 μg/m3 (16) 12.6 μg/m3 (51) 68.0
 
Jan. 21, 2019, midnight 74.0 ppb (71) 40.0 ppb (37) N/A 35.0 ppb (32) N/A N/A 7.0 ppb (5) 0.2 ppb (2) 15.0 μg/m3 (14) 10.5 μg/m3 (44) 71.0
 
Jan. 20, 2019, 11 p.m. 38.0 ppb (35) 12.0 ppb (11) N/A 26.0 ppb (24) N/A N/A 12.0 ppb (9) 0.1 ppb (1) 15.0 μg/m3 (14) 10.8 μg/m3 (45) 45.0
 
Jan. 20, 2019, 10 p.m. 27.0 ppb (25) 8.0 ppb (7) N/A 19.0 ppb (18) N/A N/A 21.0 ppb (16) 0.0 ppb (0) 8.0 μg/m3 (7) 5.5 μg/m3 (23) 25.0
 
Jan. 20, 2019, 9 p.m. 16.0 ppb (15) 5.0 ppb (5) N/A 11.0 ppb (10) N/A N/A 30.0 ppb (23) N/A -1.0 μg/m3 (0) 2.9 μg/m3 (12) 23.0
 
Jan. 20, 2019, 8 p.m. 23.0 ppb (21) 9.0 ppb (8) N/A 14.0 ppb (13) N/A N/A 25.0 ppb (19) N/A 7.0 μg/m3 (6) 4.4 μg/m3 (18) 21.0
 
Jan. 20, 2019, 7 p.m. 35.0 ppb (32) 16.0 ppb (15) N/A 19.0 ppb (18) N/A N/A 21.0 ppb (16) 0.0 ppb (0) 5.0 μg/m3 (5) 5.0 μg/m3 (21) 32.0
 
Jan. 20, 2019, 6 p.m. 80.0 ppb (78) 52.0 ppb (48) N/A 28.0 ppb (26) N/A N/A 13.0 ppb (10) 0.1 ppb (1) 13.0 μg/m3 (12) 10.6 μg/m3 (44) 78.0
 
Jan. 20, 2019, 5 p.m. 156.0 ppb (111) 120.0 ppb (104) N/A 37.0 ppb (34) N/A N/A 9.0 ppb (7) 0.4 ppb (4) 25.0 μg/m3 (23) 17.4 μg/m3 (61) 111.0
 
Jan. 20, 2019, 4 p.m. 114.0 ppb (102) 82.0 ppb (80) N/A 32.0 ppb (30) N/A N/A 8.0 ppb (6) 0.4 ppb (4) 19.0 μg/m3 (17) 14.0 μg/m3 (54) 102.0
 
Jan. 20, 2019, 3 p.m. 82.0 ppb (80) 55.0 ppb (51) N/A 27.0 ppb (25) N/A N/A 7.0 ppb (5) 0.4 ppb (4) 6.0 μg/m3 (5) 6.8 μg/m3 (28) 80.0
 
Jan. 20, 2019, 2 p.m. 75.0 ppb (72) 48.0 ppb (44) N/A 28.0 ppb (26) N/A N/A 6.0 ppb (5) 0.2 ppb (2) 6.0 μg/m3 (5) 6.7 μg/m3 (28) 72.0
 
Jan. 20, 2019, 1 p.m. 77.0 ppb (74) 48.0 ppb (44) N/A 29.0 ppb (27) N/A N/A 6.0 ppb (5) 0.3 ppb (3) 9.0 μg/m3 (8) 8.3 μg/m3 (35) 74.0
 
Jan. 20, 2019, noon 73.0 ppb (70) 45.0 ppb (42) N/A 29.0 ppb (27) N/A N/A 6.0 ppb (5) 0.1 ppb (1) 11.0 μg/m3 (10) 9.3 μg/m3 (39) 70.0
 
Jan. 20, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 6.0 ppb (5) 0.1 ppb (1) 13.0 μg/m3 (12) 10.3 μg/m3 (43) 43.0
 
Jan. 20, 2019, 10 a.m. 73.0 ppb (70) 41.0 ppb (38) N/A 32.0 ppb (30) N/A N/A 6.0 ppb (5) 0.1 ppb (1) 13.0 μg/m3 (12) 11.0 μg/m3 (46) 70.0
 
Jan. 20, 2019, 9 a.m. 69.0 ppb (66) 35.0 ppb (32) N/A 34.0 ppb (31) N/A N/A 6.0 ppb (5) 0.1 ppb (1) 15.0 μg/m3 (14) 11.2 μg/m3 (47) 66.0
 
Jan. 20, 2019, 8 a.m. 64.0 ppb (61) 30.0 ppb (28) N/A 34.0 ppb (31) N/A N/A 6.0 ppb (5) 0.2 ppb (2) 11.0 μg/m3 (10) 8.9 μg/m3 (37) 61.0
 
Jan. 20, 2019, 7 a.m. 63.0 ppb (60) 26.0 ppb (24) N/A 37.0 ppb (34) N/A N/A 6.0 ppb (5) 0.0 ppb (0) 10.0 μg/m3 (9) 8.1 μg/m3 (34) 60.0
 
Jan. 20, 2019, 6 a.m. 81.0 ppb (79) 43.0 ppb (40) N/A 38.0 ppb (35) N/A N/A 7.0 ppb (5) 0.2 ppb (2) 14.0 μg/m3 (13) 8.8 μg/m3 (37) 79.0
 
Jan. 20, 2019, 5 a.m. 98.0 ppb (97) 61.0 ppb (57) N/A 37.0 ppb (34) N/A N/A 6.0 ppb (5) 0.3 ppb (3) 18.0 μg/m3 (16) 11.7 μg/m3 (49) 97.0
 
Jan. 20, 2019, 4 a.m. 71.0 ppb (68) 35.0 ppb (32) N/A 36.0 ppb (33) N/A N/A 6.0 ppb (5) 0.2 ppb (2) 15.0 μg/m3 (14) 9.2 μg/m3 (38) 68.0
 
Jan. 20, 2019, 3 a.m. 46.0 ppb (43) 12.0 ppb (11) N/A 34.0 ppb (31) N/A N/A 7.0 ppb (5) 0.0 ppb (0) 10.0 μg/m3 (9) 6.8 μg/m3 (28) 43.0
 
Jan. 20, 2019, 2 a.m. 89.0 ppb (87) 50.0 ppb (46) N/A 39.0 ppb (36) N/A N/A 6.0 ppb (5) 0.3 ppb (3) 14.0 μg/m3 (13) 9.4 μg/m3 (39) 87.0
 
Jan. 20, 2019, 1 a.m. 86.0 ppb (84) 49.0 ppb (45) N/A 37.0 ppb (34) N/A N/A 9.0 ppb (7) 0.1 ppb (1) 15.0 μg/m3 (14) 9.3 μg/m3 (39) 84.0
 
Jan. 20, 2019, midnight 23.0 ppb (21) 2.0 ppb (2) N/A 22.0 ppb (20) N/A N/A 25.0 ppb (19) 0.0 ppb (0) 6.0 μg/m3 (5) 3.7 μg/m3 (15) 21.0
 
Jan. 19, 2019, 11 p.m. 14.0 ppb (13) 2.0 ppb (2) N/A 12.0 ppb (11) N/A N/A 35.0 ppb (27) 0.0 ppb (0) 6.0 μg/m3 (5) 3.5 μg/m3 (15) 27.0
 
Jan. 19, 2019, 10 p.m. 11.0 ppb (10) 3.0 ppb (3) N/A 9.0 ppb (8) N/A N/A 40.0 ppb (31) N/A 4.0 μg/m3 (4) 2.0 μg/m3 (8) 31.0
 
Jan. 19, 2019, 9 p.m. 13.0 ppb (12) 3.0 ppb (3) N/A 10.0 ppb (9) N/A N/A 38.0 ppb (29) 0.0 ppb (0) 4.0 μg/m3 (4) 2.8 μg/m3 (12) 29.0
 
Jan. 19, 2019, 8 p.m. 15.0 ppb (14) 4.0 ppb (4) N/A 11.0 ppb (10) N/A N/A 38.0 ppb (29) 0.0 ppb (0) 3.0 μg/m3 (3) 2.4 μg/m3 (10) 29.0
 
Jan. 19, 2019, 7 p.m. 24.0 ppb (22) 7.0 ppb (6) N/A 17.0 ppb (16) N/A N/A 31.0 ppb (24) 0.0 ppb (0) 4.0 μg/m3 (4) 3.8 μg/m3 (16) 24.0
 
Jan. 19, 2019, 6 p.m. 17.0 ppb (16) 5.0 ppb (5) N/A 12.0 ppb (11) N/A N/A 35.0 ppb (27) 0.0 ppb (0) 2.0 μg/m3 (2) 2.8 μg/m3 (12) 27.0
 
Jan. 19, 2019, 5 p.m. 11.0 ppb (10) 4.0 ppb (4) N/A 8.0 ppb (7) N/A N/A 40.0 ppb (31) N/A 1.0 μg/m3 (1) 1.8 μg/m3 (8) 31.0
 
Jan. 19, 2019, 4 p.m. 47.0 ppb (44) 20.0 ppb (19) N/A 27.0 ppb (25) N/A N/A 18.0 ppb (14) 0.0 ppb (0) 10.0 μg/m3 (9) 7.7 μg/m3 (32) 44.0
 
Jan. 19, 2019, 3 p.m. 67.0 ppb (64) 34.0 ppb (31) N/A 33.0 ppb (31) N/A N/A 9.0 ppb (7) 0.0 ppb (0) 21.0 μg/m3 (19) 15.5 μg/m3 (57) 64.0
 
Jan. 19, 2019, 2 p.m. 86.0 ppb (84) 51.0 ppb (47) N/A 35.0 ppb (32) N/A N/A 6.0 ppb (5) 0.1 ppb (1) 11.0 μg/m3 (10) 9.7 μg/m3 (40) 84.0
 
Jan. 19, 2019, 1 p.m. 104.0 ppb (101) 69.0 ppb (66) N/A 36.0 ppb (33) N/A N/A 6.0 ppb (5) 0.1 ppb (1) 10.0 μg/m3 (9) 9.9 μg/m3 (41) 101.0
 
Jan. 19, 2019, noon 80.0 ppb (78) 45.0 ppb (42) N/A 35.0 ppb (32) N/A N/A 6.0 ppb (5) 0.1 ppb (1) 6.0 μg/m3 (5) 6.3 μg/m3 (26) 78.0
 
Jan. 19, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 6.0 ppb (5) 0.1 ppb (1) 6.0 μg/m3 (5) 6.8 μg/m3 (28) 28.0
 
Jan. 19, 2019, 10 a.m. 79.0 ppb (77) 49.0 ppb (45) N/A 30.0 ppb (28) N/A N/A 6.0 ppb (5) 0.3 ppb (3) 9.0 μg/m3 (8) 9.0 μg/m3 (38) 77.0
 
Jan. 19, 2019, 9 a.m. 79.0 ppb (77) 48.0 ppb (44) N/A 31.0 ppb (29) N/A N/A 6.0 ppb (5) 0.5 ppb (6) 6.0 μg/m3 (5) 6.5 μg/m3 (27) 77.0
 
Jan. 19, 2019, 8 a.m. 68.0 ppb (65) 40.0 ppb (37) N/A 29.0 ppb (27) N/A N/A 6.0 ppb (5) 0.6 ppb (7) 18.0 μg/m3 (16) 21.0 μg/m3 (69) 69.0
 
Jan. 19, 2019, 7 a.m. 89.0 ppb (87) 60.0 ppb (56) N/A 30.0 ppb (28) N/A N/A 6.0 ppb (5) 0.7 ppb (8) 9.0 μg/m3 (8) 10.2 μg/m3 (42) 87.0
 
Jan. 19, 2019, 6 a.m. 94.0 ppb (93) 65.0 ppb (62) N/A 30.0 ppb (28) N/A N/A 6.0 ppb (5) 0.8 ppb (9) 6.0 μg/m3 (5) 8.2 μg/m3 (34) 93.0
 
Jan. 19, 2019, 5 a.m. 89.0 ppb (87) 59.0 ppb (55) N/A 31.0 ppb (29) N/A N/A 6.0 ppb (5) 0.6 ppb (7) 6.0 μg/m3 (5) 8.3 μg/m3 (35) 87.0
 
Jan. 19, 2019, 4 a.m. 79.0 ppb (77) 48.0 ppb (44) N/A 31.0 ppb (29) N/A N/A 6.0 ppb (5) 0.5 ppb (6) 4.0 μg/m3 (4) 7.4 μg/m3 (31) 77.0
 
Jan. 19, 2019, 3 a.m. 73.0 ppb (70) 43.0 ppb (40) N/A 30.0 ppb (28) N/A N/A 6.0 ppb (5) 0.5 ppb (6) 6.0 μg/m3 (5) 11.1 μg/m3 (46) 70.0
 
Jan. 19, 2019, 2 a.m. 50.0 ppb (46) 17.0 ppb (16) N/A 33.0 ppb (31) N/A N/A 6.0 ppb (5) 0.2 ppb (2) 2.0 μg/m3 (2) 4.5 μg/m3 (19) 46.0
 
Jan. 19, 2019, 1 a.m. 28.0 ppb (26) 3.0 ppb (3) N/A 25.0 ppb (23) N/A N/A 17.0 ppb (13) 0.0 ppb (0) 1.0 μg/m3 (1) 3.1 μg/m3 (13) 26.0
 
Jan. 19, 2019, midnight 16.0 ppb (15) 2.0 ppb (2) N/A 14.0 ppb (13) N/A N/A 31.0 ppb (24) 0.0 ppb (0) 0.0 μg/m3 (0) 1.4 μg/m3 (6) 24.0
 
Jan. 18, 2019, 11 p.m. 12.0 ppb (11) 2.0 ppb (2) N/A 10.0 ppb (9) N/A N/A 38.0 ppb (29) N/A -1.0 μg/m3 (0) 1.1 μg/m3 (5) 29.0
 
Jan. 18, 2019, 10 p.m. 11.0 ppb (10) 3.0 ppb (3) N/A 8.0 ppb (7) N/A N/A 41.0 ppb (32) N/A -1.0 μg/m3 (0) 1.2 μg/m3 (5) 32.0
 
Jan. 18, 2019, 9 p.m. 14.0 ppb (13) 4.0 ppb (4) N/A 9.0 ppb (8) N/A N/A 39.0 ppb (30) N/A -3.0 μg/m3 (0) 1.4 μg/m3 (6) 30.0
 
Jan. 18, 2019, 8 p.m. 13.0 ppb (12) 4.0 ppb (4) N/A 10.0 ppb (9) N/A N/A 39.0 ppb (30) 0.0 ppb (0) 0.0 μg/m3 (0) 1.5 μg/m3 (6) 30.0
 
Jan. 18, 2019, 7 p.m. 16.0 ppb (15) 4.0 ppb (4) N/A 12.0 ppb (11) N/A N/A 34.0 ppb (26) 0.0 ppb (0) 0.0 μg/m3 (0) 1.5 μg/m3 (6) 26.0
 
Jan. 18, 2019, 6 p.m. 15.0 ppb (14) 4.0 ppb (4) N/A 12.0 ppb (11) N/A N/A 35.0 ppb (27) N/A 0.0 μg/m3 (0) 1.4 μg/m3 (6) 27.0
 
Jan. 18, 2019, 5 p.m. 22.0 ppb (20) 4.0 ppb (4) N/A 18.0 ppb (17) N/A N/A 30.0 ppb (23) 0.0 ppb (0) 0.0 μg/m3 (0) 1.7 μg/m3 (7) 23.0
 
Jan. 18, 2019, 4 p.m. 24.0 ppb (22) 4.0 ppb (4) N/A 20.0 ppb (19) N/A N/A 29.0 ppb (22) 0.0 ppb (0) 0.0 μg/m3 (0) 1.2 μg/m3 (5) 22.0
 
Jan. 18, 2019, 3 p.m. 42.0 ppb (39) 10.0 ppb (9) N/A 32.0 ppb (30) N/A N/A 17.0 ppb (13) 0.0 ppb (0) 1.0 μg/m3 (1) 1.8 μg/m3 (8) 39.0
 
Jan. 18, 2019, 2 p.m. 36.0 ppb (33) 7.0 ppb (6) N/A 29.0 ppb (27) N/A N/A 19.0 ppb (15) 0.0 ppb (0) 0.0 μg/m3 (0) 1.2 μg/m3 (5) 33.0
 
Jan. 18, 2019, 1 p.m. 19.0 ppb (18) 2.0 ppb (2) N/A 18.0 ppb (17) N/A N/A 28.0 ppb (22) 0.0 ppb (0) 0.0 μg/m3 (0) 0.9 μg/m3 (4) 22.0
 
Jan. 18, 2019, noon 16.0 ppb (15) 2.0 ppb (2) N/A 14.0 ppb (13) N/A N/A 32.0 ppb (25) N/A 0.0 μg/m3 (0) 0.7 μg/m3 (3) 25.0
 
Jan. 18, 2019, 11 a.m. 10.0 ppb (9) 1.0 ppb (1) N/A 9.0 ppb (8) N/A N/A N/A N/A 0.0 μg/m3 (0) 0.5 μg/m3 (2) 9.0
 
Jan. 18, 2019, 10 a.m. 7.0 ppb (6) 1.0 ppb (1) N/A 6.0 ppb (6) N/A N/A 42.0 ppb (32) N/A 0.0 μg/m3 (0) 0.7 μg/m3 (3) 32.0
 
Jan. 18, 2019, 9 a.m. 9.0 ppb (8) 1.0 ppb (1) N/A 8.0 ppb (7) N/A N/A 38.0 ppb (29) N/A 0.0 μg/m3 (0) 1.2 μg/m3 (5) 29.0
 
Jan. 18, 2019, 8 a.m. 10.0 ppb (9) 1.0 ppb (1) N/A 10.0 ppb (9) N/A N/A 38.0 ppb (29) N/A 0.0 μg/m3 (0) 1.1 μg/m3 (5) 29.0
 
Jan. 18, 2019, 7 a.m. 13.0 ppb (12) 1.0 ppb (1) N/A 12.0 ppb (11) N/A N/A 35.0 ppb (27) N/A 1.0 μg/m3 (1) 0.9 μg/m3 (4) 27.0
 
Jan. 18, 2019, 6 a.m. 14.0 ppb (13) 1.0 ppb (1) N/A 13.0 ppb (12) N/A N/A 33.0 ppb (25) N/A 1.0 μg/m3 (1) 0.7 μg/m3 (3) 25.0
 
Jan. 18, 2019, 5 a.m. 13.0 ppb (12) 1.0 ppb (1) N/A 12.0 ppb (11) N/A N/A 33.0 ppb (25) N/A 0.0 μg/m3 (0) 0.6 μg/m3 (2) 25.0
 
Jan. 18, 2019, 4 a.m. 10.0 ppb (9) 1.0 ppb (1) N/A 9.0 ppb (8) N/A N/A 38.0 ppb (29) N/A -2.0 μg/m3 (0) 0.9 μg/m3 (4) 29.0
 
Jan. 18, 2019, 3 a.m. 15.0 ppb (14) 2.0 ppb (2) N/A 14.0 ppb (13) N/A N/A 34.0 ppb (26) N/A 1.0 μg/m3 (1) 1.4 μg/m3 (6) 26.0
 
Jan. 18, 2019, 2 a.m. 31.0 ppb (29) 3.0 ppb (3) N/A 28.0 ppb (26) N/A N/A 17.0 ppb (13) 0.0 ppb (0) 1.0 μg/m3 (1) 2.6 μg/m3 (11) 29.0
 
Jan. 18, 2019, 1 a.m. 28.0 ppb (26) 6.0 ppb (6) N/A 22.0 ppb (20) N/A N/A 26.0 ppb (20) 0.0 ppb (0) 1.0 μg/m3 (1) 1.8 μg/m3 (8) 26.0
 
Jan. 18, 2019, midnight 55.0 ppb (51) 16.0 ppb (15) N/A 39.0 ppb (36) N/A N/A 10.0 ppb (8) 0.3 ppb (3) 5.0 μg/m3 (5) 2.0 μg/m3 (8) 51.0
 
Jan. 17, 2019, 11 p.m. 15.0 ppb (14) 3.0 ppb (3) N/A 13.0 ppb (12) N/A N/A 38.0 ppb (29) 0.0 ppb (0) 2.0 μg/m3 (2) 0.8 μg/m3 (3) 29.0
 
Jan. 17, 2019, 10 p.m. 9.0 ppb (8) 2.0 ppb (2) N/A 8.0 ppb (7) N/A N/A 37.0 ppb (28) N/A 0.0 μg/m3 (0) 0.6 μg/m3 (2) 28.0
 
Jan. 17, 2019, 9 p.m. 11.0 ppb (10) 2.0 ppb (2) N/A 9.0 ppb (8) N/A N/A 36.0 ppb (28) N/A 2.0 μg/m3 (2) 0.8 μg/m3 (3) 28.0
 
Jan. 17, 2019, 8 p.m. 28.0 ppb (26) 8.0 ppb (7) N/A 21.0 ppb (19) N/A N/A 23.0 ppb (18) 0.0 ppb (0) 6.0 μg/m3 (5) 1.6 μg/m3 (7) 26.0
 
Jan. 17, 2019, 7 p.m. 16.0 ppb (15) 3.0 ppb (3) N/A 13.0 ppb (12) N/A N/A 32.0 ppb (25) N/A 3.0 μg/m3 (3) 1.3 μg/m3 (5) 25.0
 
Jan. 17, 2019, 6 p.m. 10.0 ppb (9) 2.0 ppb (2) N/A 8.0 ppb (7) N/A N/A 38.0 ppb (29) N/A -1.0 μg/m3 (0) 0.8 μg/m3 (3) 29.0
 
Jan. 17, 2019, 5 p.m. 12.0 ppb (11) 2.0 ppb (2) N/A 10.0 ppb (9) N/A N/A 37.0 ppb (28) N/A -3.0 μg/m3 (0) 0.9 μg/m3 (4) 28.0
 
Jan. 17, 2019, 4 p.m. 11.0 ppb (10) 2.0 ppb (2) N/A 10.0 ppb (9) N/A N/A 38.0 ppb (29) N/A -2.0 μg/m3 (0) 0.8 μg/m3 (3) 29.0
 
Jan. 17, 2019, 3 p.m. 10.0 ppb (9) 1.0 ppb (1) N/A 9.0 ppb (8) N/A N/A 39.0 ppb (30) N/A -1.0 μg/m3 (0) 0.8 μg/m3 (3) 30.0
 
Jan. 17, 2019, 2 p.m. 12.0 ppb (11) 1.0 ppb (1) N/A 11.0 ppb (10) N/A N/A 37.0 ppb (28) N/A 1.0 μg/m3 (1) 0.9 μg/m3 (4) 28.0
 
Jan. 17, 2019, 1 p.m. 10.0 ppb (9) 1.0 ppb (1) N/A 9.0 ppb (8) N/A N/A 38.0 ppb (29) N/A -1.0 μg/m3 (0) 0.8 μg/m3 (3) 29.0
 
Jan. 17, 2019, noon 47.0 ppb (44) 27.0 ppb (25) N/A 20.0 ppb (19) N/A N/A 24.0 ppb (18) 0.0 ppb (0) 0.0 μg/m3 (0) 2.6 μg/m3 (11) 44.0
 
Jan. 17, 2019, 11 a.m. 79.0 ppb (77) 45.0 ppb (42) N/A 34.0 ppb (31) N/A N/A 6.0 ppb (5) 0.3 ppb (3) 5.0 μg/m3 (5) 4.9 μg/m3 (20) 77.0
 
Jan. 17, 2019, 10 a.m. 70.0 ppb (67) 34.0 ppb (31) N/A 36.0 ppb (33) N/A N/A 6.0 ppb (5) 0.2 ppb (2) 4.0 μg/m3 (4) 4.4 μg/m3 (18) 67.0
 
Jan. 17, 2019, 9 a.m. 63.0 ppb (60) 26.0 ppb (24) N/A 37.0 ppb (34) N/A N/A 7.0 ppb (5) 0.0 ppb (0) 4.0 μg/m3 (4) 4.3 μg/m3 (18) 60.0
 
Jan. 17, 2019, 8 a.m. 85.0 ppb (83) 46.0 ppb (43) N/A 39.0 ppb (36) N/A N/A 7.0 ppb (5) 0.2 ppb (2) 8.0 μg/m3 (7) 7.3 μg/m3 (30) 83.0
 
Jan. 17, 2019, 7 a.m. 112.0 ppb (102) 76.0 ppb (73) N/A 36.0 ppb (33) N/A N/A 5.0 ppb (4) 0.8 ppb (9) 19.0 μg/m3 (17) 13.2 μg/m3 (53) 102.0
 
Jan. 17, 2019, 6 a.m. 156.0 ppb (111) 112.0 ppb (102) N/A 44.0 ppb (41) N/A N/A 6.0 ppb (5) 0.9 ppb (10) 33.0 μg/m3 (30) 25.7 μg/m3 (79) 111.0
 
Jan. 17, 2019, 5 a.m. 127.0 ppb (105) 85.0 ppb (83) N/A 43.0 ppb (40) N/A N/A 6.0 ppb (5) 0.8 ppb (9) 36.0 μg/m3 (33) 28.0 μg/m3 (84) 105.0
 
Jan. 17, 2019, 4 a.m. 111.0 ppb (102) 68.0 ppb (65) N/A 44.0 ppb (41) N/A N/A 5.0 ppb (4) 0.6 ppb (7) 38.0 μg/m3 (35) 28.7 μg/m3 (86) 102.0
 
Jan. 17, 2019, 3 a.m. 92.0 ppb (90) 47.0 ppb (44) N/A 45.0 ppb (42) N/A N/A 6.0 ppb (5) 0.3 ppb (3) 39.0 μg/m3 (35) 29.9 μg/m3 (88) 90.0
 
Jan. 17, 2019, 2 a.m. 66.0 ppb (63) 22.0 ppb (20) N/A 43.0 ppb (40) N/A N/A 5.0 ppb (4) 0.1 ppb (1) 38.0 μg/m3 (35) 29.9 μg/m3 (88) 88.0
 
Jan. 17, 2019, 1 a.m. 51.0 ppb (47) 10.0 ppb (9) N/A 41.0 ppb (38) N/A N/A 9.0 ppb (7) 0.1 ppb (1) 40.0 μg/m3 (36) 31.6 μg/m3 (92) 92.0
 
Jan. 17, 2019, midnight 71.0 ppb (68) 29.0 ppb (27) N/A 42.0 ppb (39) N/A N/A 7.0 ppb (5) 0.2 ppb (2) 42.0 μg/m3 (38) 31.0 μg/m3 (90) 90.0
 
Jan. 16, 2019, 11 p.m. 66.0 ppb (63) 30.0 ppb (28) N/A 36.0 ppb (33) N/A N/A 12.0 ppb (9) 0.1 ppb (1) 39.0 μg/m3 (35) 29.5 μg/m3 (87) 87.0
 
Jan. 16, 2019, 10 p.m. 80.0 ppb (78) 43.0 ppb (40) N/A 38.0 ppb (35) N/A N/A 14.0 ppb (11) 0.2 ppb (2) 27.0 μg/m3 (25) 20.0 μg/m3 (67) 78.0
 
Jan. 16, 2019, 9 p.m. 67.0 ppb (64) 37.0 ppb (34) N/A 30.0 ppb (28) N/A N/A 20.0 ppb (15) 0.1 ppb (1) 24.0 μg/m3 (22) 17.3 μg/m3 (61) 64.0
 
Jan. 16, 2019, 8 p.m. 80.0 ppb (78) 48.0 ppb (44) N/A 32.0 ppb (30) N/A N/A 18.0 ppb (14) 0.2 ppb (2) 22.0 μg/m3 (20) 16.9 μg/m3 (60) 78.0
 
Jan. 16, 2019, 7 p.m. 50.0 ppb (46) 26.0 ppb (24) N/A 25.0 ppb (23) N/A N/A 21.0 ppb (16) 0.2 ppb (2) 15.0 μg/m3 (14) 12.3 μg/m3 (51) 51.0
 
Jan. 16, 2019, 6 p.m. 50.0 ppb (46) 25.0 ppb (23) N/A 25.0 ppb (23) N/A N/A 20.0 ppb (15) 0.2 ppb (2) 14.0 μg/m3 (13) 11.7 μg/m3 (49) 49.0
 
Jan. 16, 2019, 5 p.m. 109.0 ppb (102) 70.0 ppb (67) N/A 39.0 ppb (36) N/A N/A 10.0 ppb (8) 0.4 ppb (4) 17.0 μg/m3 (15) 16.2 μg/m3 (59) 102.0
 
Jan. 16, 2019, 4 p.m. 132.0 ppb (106) 87.0 ppb (85) N/A 45.0 ppb (42) N/A N/A 7.0 ppb (5) 0.5 ppb (6) 29.0 μg/m3 (26) 24.1 μg/m3 (76) 106.0
 
Jan. 16, 2019, 3 p.m. 108.0 ppb (101) 63.0 ppb (60) N/A 45.0 ppb (42) N/A N/A 6.0 ppb (5) 0.3 ppb (3) 34.0 μg/m3 (31) 26.4 μg/m3 (81) 101.0
 
Jan. 16, 2019, 2 p.m. 92.0 ppb (90) 48.0 ppb (44) N/A 45.0 ppb (42) N/A N/A 5.0 ppb (4) 0.1 ppb (1) 32.0 μg/m3 (29) 26.2 μg/m3 (80) 90.0
 
Jan. 16, 2019, 1 p.m. 75.0 ppb (72) 33.0 ppb (31) N/A 42.0 ppb (39) N/A N/A 5.0 ppb (4) 0.1 ppb (1) 33.0 μg/m3 (30) 28.1 μg/m3 (84) 84.0
 
Jan. 16, 2019, noon 52.0 ppb (48) 12.0 ppb (11) N/A 40.0 ppb (37) N/A N/A 6.0 ppb (5) 0.0 ppb (0) 36.0 μg/m3 (33) 28.7 μg/m3 (86) 86.0
 
Jan. 16, 2019, 11 a.m. 43.0 ppb (40) 9.0 ppb (8) N/A 35.0 ppb (32) N/A N/A 12.0 ppb (9) 0.0 ppb (0) 40.0 μg/m3 (36) 28.3 μg/m3 (85) 85.0
 
Jan. 16, 2019, 10 a.m. 42.0 ppb (39) 9.0 ppb (8) N/A 34.0 ppb (31) N/A N/A 10.0 ppb (8) N/A 34.0 μg/m3 (31) 24.4 μg/m3 (76) 76.0
 
Jan. 16, 2019, 9 a.m. 27.0 ppb (25) 2.0 ppb (2) N/A 25.0 ppb (23) N/A N/A 17.0 ppb (13) 0.0 ppb (0) 29.0 μg/m3 (26) 21.4 μg/m3 (70) 70.0
 
Jan. 16, 2019, 8 a.m. 21.0 ppb (19) 2.0 ppb (2) N/A 20.0 ppb (19) N/A N/A 23.0 ppb (18) N/A 35.0 μg/m3 (32) 19.5 μg/m3 (66) 66.0
 
Jan. 16, 2019, 7 a.m. 35.0 ppb (32) 4.0 ppb (4) N/A 32.0 ppb (30) N/A N/A 13.0 ppb (10) 0.0 ppb (0) 31.0 μg/m3 (28) 18.2 μg/m3 (63) 63.0
 
Jan. 16, 2019, 6 a.m. 32.0 ppb (30) 3.0 ppb (3) N/A 29.0 ppb (27) N/A N/A 16.0 ppb (12) 0.0 ppb (0) 29.0 μg/m3 (26) 17.2 μg/m3 (61) 61.0
 
Jan. 16, 2019, 5 a.m. 48.0 ppb (44) 11.0 ppb (10) N/A 38.0 ppb (35) N/A N/A 10.0 ppb (8) 0.0 ppb (0) 27.0 μg/m3 (25) 16.1 μg/m3 (59) 59.0
 
Jan. 16, 2019, 4 a.m. 95.0 ppb (94) 49.0 ppb (45) N/A 47.0 ppb (44) N/A N/A 5.0 ppb (4) 0.1 ppb (1) 26.0 μg/m3 (24) 15.3 μg/m3 (57) 94.0
 
Jan. 16, 2019, 3 a.m. 79.0 ppb (77) 33.0 ppb (31) N/A 46.0 ppb (43) N/A N/A 5.0 ppb (4) 0.0 ppb (0) 25.0 μg/m3 (23) 14.5 μg/m3 (55) 77.0
 
Jan. 16, 2019, 2 a.m. 63.0 ppb (60) 17.0 ppb (16) N/A 46.0 ppb (43) N/A N/A 5.0 ppb (4) 0.0 ppb (0) 24.0 μg/m3 (22) 14.3 μg/m3 (55) 60.0
 
Jan. 16, 2019, 1 a.m. 54.0 ppb (50) 11.0 ppb (10) N/A 43.0 ppb (40) N/A N/A 7.0 ppb (5) 0.0 ppb (0) 24.0 μg/m3 (22) 13.7 μg/m3 (54) 54.0
 
Jan. 16, 2019, midnight 47.0 ppb (44) 10.0 ppb (9) N/A 38.0 ppb (35) N/A N/A 13.0 ppb (10) 0.0 ppb (0) 24.0 μg/m3 (22) 14.1 μg/m3 (54) 54.0
 
Jan. 15, 2019, 11 p.m. 35.0 ppb (32) 7.0 ppb (6) N/A 28.0 ppb (26) N/A N/A 23.0 ppb (18) 0.0 ppb (0) 25.0 μg/m3 (23) 14.0 μg/m3 (54) 54.0
 
Jan. 15, 2019, 10 p.m. 42.0 ppb (39) 13.0 ppb (12) N/A 30.0 ppb (28) N/A N/A 22.0 ppb (17) 0.0 ppb (0) 31.0 μg/m3 (28) 17.5 μg/m3 (62) 62.0
 
Jan. 15, 2019, 9 p.m. 33.0 ppb (31) 11.0 ppb (10) N/A 22.0 ppb (20) N/A N/A 30.0 ppb (23) 0.0 ppb (0) 28.0 μg/m3 (25) 16.1 μg/m3 (59) 59.0
 
Jan. 15, 2019, 8 p.m. 33.0 ppb (31) 11.0 ppb (10) N/A 22.0 ppb (20) N/A N/A 29.0 ppb (22) 0.0 ppb (0) 29.0 μg/m3 (26) 16.8 μg/m3 (60) 60.0
 
Jan. 15, 2019, 7 p.m. 37.0 ppb (34) 15.0 ppb (14) N/A 22.0 ppb (20) N/A N/A 27.0 ppb (21) 0.0 ppb (0) 30.0 μg/m3 (27) 17.2 μg/m3 (61) 61.0
 
Jan. 15, 2019, 6 p.m. 34.0 ppb (31) 12.0 ppb (11) N/A 23.0 ppb (21) N/A N/A 27.0 ppb (21) 0.0 ppb (0) 29.0 μg/m3 (26) 16.7 μg/m3 (60) 60.0
 
Jan. 15, 2019, 5 p.m. 70.0 ppb (67) 37.0 ppb (34) N/A 34.0 ppb (31) N/A N/A 14.0 ppb (11) 0.1 ppb (1) 36.0 μg/m3 (33) 23.1 μg/m3 (74) 74.0
 
Jan. 15, 2019, 4 p.m. 93.0 ppb (91) 50.0 ppb (46) N/A 43.0 ppb (40) N/A N/A 9.0 ppb (7) 0.2 ppb (2) 28.0 μg/m3 (25) 18.0 μg/m3 (63) 91.0
 
Jan. 15, 2019, 3 p.m. 71.0 ppb (68) 28.0 ppb (26) N/A 43.0 ppb (40) N/A N/A 7.0 ppb (5) 0.2 ppb (2) 24.0 μg/m3 (22) 16.9 μg/m3 (60) 68.0
 
Jan. 15, 2019, 2 p.m. 59.0 ppb (55) 18.0 ppb (17) N/A 42.0 ppb (39) N/A N/A 6.0 ppb (5) 0.1 ppb (1) 23.0 μg/m3 (21) 16.6 μg/m3 (60) 60.0
 
Jan. 15, 2019, 1 p.m. 66.0 ppb (63) 24.0 ppb (22) N/A 41.0 ppb (38) N/A N/A 6.0 ppb (5) 0.0 ppb (0) 25.0 μg/m3 (23) 17.8 μg/m3 (62) 63.0
 
Jan. 15, 2019, noon 36.0 ppb (33) 5.0 ppb (5) N/A 32.0 ppb (30) N/A N/A 12.0 ppb (9) 0.0 ppb (0) 23.0 μg/m3 (21) 16.5 μg/m3 (60) 60.0
 
Jan. 15, 2019, 11 a.m. 76.0 ppb (73) 36.0 ppb (33) N/A 40.0 ppb (37) N/A N/A 5.0 ppb (4) 0.0 ppb (0) 24.0 μg/m3 (22) 16.9 μg/m3 (60) 73.0
 
Jan. 15, 2019, 10 a.m. 91.0 ppb (89) 49.0 ppb (45) N/A 42.0 ppb (39) N/A N/A 5.0 ppb (4) 0.0 ppb (0) 25.0 μg/m3 (23) 17.5 μg/m3 (62) 89.0
 
Jan. 15, 2019, 9 a.m. 91.0 ppb (89) 49.0 ppb (45) N/A 43.0 ppb (40) N/A N/A 5.0 ppb (4) 0.1 ppb (1) 23.0 μg/m3 (21) 15.0 μg/m3 (56) 89.0
 
Jan. 15, 2019, 8 a.m. 75.0 ppb (72) 35.0 ppb (32) N/A 40.0 ppb (37) N/A N/A 5.0 ppb (4) 0.0 ppb (0) 24.0 μg/m3 (22) 15.4 μg/m3 (57) 72.0
 
Jan. 15, 2019, 7 a.m. 105.0 ppb (101) 62.0 ppb (59) N/A 44.0 ppb (41) N/A N/A 5.0 ppb (4) 0.1 ppb (1) 22.0 μg/m3 (20) 14.0 μg/m3 (54) 101.0