AQSQID: 530530024

Site Name: Tacoma-S 36th St

Location: Tacoma (I 5), WA

Reporting: True, Located: True

Current AQI: 25.0

Tacoma (I 5) WA, US: 47.22634, -122.46256

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
Jan. 24, 2019, 7 a.m. 16.5 ppb (15) 7.2 ppb (7) N/A 9.0 ppb (8) N/A N/A N/A N/A N/A 6.0 μg/m3 (25) 25.0
 
Jan. 24, 2019, 6 a.m. 46.9 ppb (43) 24.4 ppb (23) N/A 22.0 ppb (20) N/A N/A N/A N/A N/A 8.0 μg/m3 (33) 43.0
 
Jan. 24, 2019, 5 a.m. 50.5 ppb (47) 25.6 ppb (24) N/A 25.0 ppb (23) N/A N/A N/A N/A N/A 8.0 μg/m3 (33) 47.0
 
Jan. 24, 2019, 4 a.m. 37.6 ppb (35) 13.1 ppb (12) N/A 24.0 ppb (22) N/A N/A N/A N/A N/A 11.0 μg/m3 (46) 46.0
 
Jan. 24, 2019, 3 a.m. 69.8 ppb (67) 42.7 ppb (40) N/A 27.0 ppb (25) N/A N/A N/A N/A N/A 10.0 μg/m3 (42) 67.0
 
Jan. 24, 2019, 2 a.m. 43.0 ppb (40) 19.5 ppb (18) N/A 23.0 ppb (21) N/A N/A N/A N/A N/A 7.0 μg/m3 (29) 40.0
 
Jan. 24, 2019, 1 a.m. 21.2 ppb (20) 1.3 ppb (1) N/A 20.0 ppb (19) N/A N/A N/A N/A N/A 5.0 μg/m3 (21) 21.0
 
Jan. 24, 2019, midnight 27.3 ppb (25) 5.0 ppb (5) N/A 22.0 ppb (20) N/A N/A N/A N/A N/A 5.0 μg/m3 (21) 25.0
 
Jan. 23, 2019, 11 p.m. 38.2 ppb (35) 14.8 ppb (14) N/A 23.0 ppb (21) N/A N/A N/A N/A N/A 4.0 μg/m3 (17) 35.0
 
Jan. 23, 2019, 10 p.m. 30.4 ppb (28) 14.5 ppb (13) N/A 16.0 ppb (15) N/A N/A N/A N/A N/A 6.0 μg/m3 (25) 28.0
 
Jan. 23, 2019, 9 p.m. 41.6 ppb (39) 22.6 ppb (21) N/A 19.0 ppb (18) N/A N/A N/A N/A N/A 6.0 μg/m3 (25) 39.0
 
Jan. 23, 2019, 8 p.m. 38.2 ppb (35) 21.2 ppb (20) N/A 17.0 ppb (16) N/A N/A N/A N/A N/A 4.0 μg/m3 (17) 35.0
 
Jan. 23, 2019, 7 p.m. 31.4 ppb (29) 17.1 ppb (16) N/A 14.0 ppb (13) N/A N/A N/A N/A N/A 5.0 μg/m3 (21) 29.0
 
Jan. 23, 2019, 6 p.m. 32.3 ppb (30) 15.9 ppb (15) N/A 16.0 ppb (15) N/A N/A N/A N/A N/A 5.0 μg/m3 (21) 30.0
 
Jan. 23, 2019, 5 p.m. 49.4 ppb (46) 27.9 ppb (26) N/A 21.0 ppb (19) N/A N/A N/A N/A N/A 5.0 μg/m3 (21) 46.0
 
Jan. 23, 2019, 4 p.m. 44.3 ppb (41) 23.0 ppb (21) N/A 21.0 ppb (19) N/A N/A N/A N/A N/A 3.0 μg/m3 (12) 41.0
 
Jan. 23, 2019, 3 p.m. 30.8 ppb (29) 15.7 ppb (15) N/A 15.0 ppb (14) N/A N/A N/A N/A N/A 1.0 μg/m3 (4) 29.0
 
Jan. 23, 2019, 2 p.m. 21.3 ppb (20) 11.2 ppb (10) N/A 10.0 ppb (9) N/A N/A N/A N/A N/A 1.0 μg/m3 (4) 20.0
 
Jan. 23, 2019, 1 p.m. 25.4 ppb (24) 15.3 ppb (14) N/A 10.0 ppb (9) N/A N/A N/A N/A N/A 2.0 μg/m3 (8) 24.0
 
Jan. 23, 2019, noon 17.0 ppb (16) 8.7 ppb (8) N/A 8.0 ppb (7) N/A N/A N/A N/A N/A 1.0 μg/m3 (4) 16.0
 
Jan. 23, 2019, 11 a.m. 9.6 ppb (9) 4.6 ppb (4) N/A 5.0 ppb (5) N/A N/A N/A N/A N/A 2.0 μg/m3 (8) 9.0
 
Jan. 23, 2019, 10 a.m. 7.7 ppb (7) 3.8 ppb (4) N/A 4.0 ppb (4) N/A N/A N/A N/A N/A 1.0 μg/m3 (4) 7.0
 
Jan. 23, 2019, 9 a.m. 6.8 ppb (6) 3.3 ppb (3) N/A 4.0 ppb (4) N/A N/A N/A N/A N/A 4.0 μg/m3 (17) 17.0
 
Jan. 23, 2019, 8 a.m. 5.7 ppb (5) 2.2 ppb (2) N/A 4.0 ppb (4) N/A N/A N/A N/A N/A 6.0 μg/m3 (25) 25.0
 
Jan. 23, 2019, 7 a.m. 7.8 ppb (7) 3.7 ppb (3) N/A 4.0 ppb (4) N/A N/A N/A N/A N/A -1.0 μg/m3 (0) 7.0
 
Jan. 23, 2019, 6 a.m. 10.1 ppb (9) 4.6 ppb (4) N/A 5.0 ppb (5) N/A N/A N/A N/A N/A 1.0 μg/m3 (4) 9.0
 
Jan. 23, 2019, 5 a.m. 13.8 ppb (13) 6.5 ppb (6) N/A 7.0 ppb (6) N/A N/A N/A N/A N/A 2.0 μg/m3 (8) 13.0
 
Jan. 23, 2019, 4 a.m. 18.3 ppb (17) 7.5 ppb (7) N/A 11.0 ppb (10) N/A N/A N/A N/A N/A 0.0 μg/m3 (0) 17.0
 
Jan. 23, 2019, 3 a.m. 9.3 ppb (9) 2.3 ppb (2) N/A 7.0 ppb (6) N/A N/A N/A N/A N/A 0.0 μg/m3 (0) 9.0
 
Jan. 23, 2019, 2 a.m. 28.3 ppb (26) 10.1 ppb (9) N/A 18.0 ppb (17) N/A N/A N/A N/A N/A 3.0 μg/m3 (12) 26.0
 
Jan. 23, 2019, 1 a.m. 45.6 ppb (42) 20.1 ppb (19) N/A 26.0 ppb (24) N/A N/A N/A N/A N/A 6.0 μg/m3 (25) 42.0
 
Jan. 23, 2019, midnight 47.4 ppb (44) 22.2 ppb (21) N/A 25.0 ppb (23) N/A N/A N/A N/A N/A 7.0 μg/m3 (29) 44.0
 
Jan. 22, 2019, 11 p.m. 22.8 ppb (21) 5.4 ppb (5) N/A 17.0 ppb (16) N/A N/A N/A N/A N/A 5.0 μg/m3 (21) 21.0
 
Jan. 22, 2019, 10 p.m. 17.8 ppb (16) 2.2 ppb (2) N/A 16.0 ppb (15) N/A N/A N/A N/A N/A 4.0 μg/m3 (17) 17.0
 
Jan. 22, 2019, 9 p.m. 33.5 ppb (31) 9.7 ppb (9) N/A 24.0 ppb (22) N/A N/A N/A N/A N/A 7.0 μg/m3 (29) 31.0
 
Jan. 22, 2019, 8 p.m. 79.3 ppb (77) 47.3 ppb (44) N/A 32.0 ppb (30) N/A N/A N/A N/A N/A 8.0 μg/m3 (33) 77.0
 
Jan. 22, 2019, 7 p.m. 99.2 ppb (98) 64.6 ppb (61) N/A 34.0 ppb (31) N/A N/A N/A N/A N/A 9.0 μg/m3 (38) 98.0
 
Jan. 22, 2019, 6 p.m. 62.5 ppb (59) 35.6 ppb (33) N/A 27.0 ppb (25) N/A N/A N/A N/A N/A 3.0 μg/m3 (12) 59.0
 
Jan. 22, 2019, 5 p.m. 10.4 ppb (10) 1.6 ppb (1) N/A 9.0 ppb (8) N/A N/A N/A N/A N/A 2.0 μg/m3 (8) 10.0
 
Jan. 22, 2019, 10 a.m. 20.5 ppb (19) 6.1 ppb (6) N/A 14.0 ppb (13) N/A N/A N/A N/A N/A 6.0 μg/m3 (25) 25.0
 
Jan. 22, 2019, 9 a.m. 25.7 ppb (24) 10.3 ppb (10) N/A 15.0 ppb (14) N/A N/A N/A N/A N/A 6.0 μg/m3 (25) 25.0
 
Jan. 22, 2019, 8 a.m. 9.1 ppb (8) 1.2 ppb (1) N/A 8.0 ppb (7) N/A N/A N/A N/A N/A 9.0 μg/m3 (38) 38.0
 
Jan. 22, 2019, 7 a.m. 23.2 ppb (21) 8.2 ppb (8) N/A 15.0 ppb (14) N/A N/A N/A N/A N/A 13.0 μg/m3 (52) 52.0
 
Jan. 22, 2019, 6 a.m. 32.9 ppb (30) 15.6 ppb (14) N/A 17.0 ppb (16) N/A N/A N/A N/A N/A 14.0 μg/m3 (54) 54.0
 
Jan. 22, 2019, 5 a.m. 38.5 ppb (36) 17.2 ppb (16) N/A 21.0 ppb (19) N/A N/A N/A N/A N/A 17.0 μg/m3 (61) 61.0
 
Jan. 22, 2019, 4 a.m. 66.1 ppb (63) 39.0 ppb (36) N/A 27.0 ppb (25) N/A N/A N/A N/A N/A 22.0 μg/m3 (71) 71.0
 
Jan. 22, 2019, 3 a.m. 60.7 ppb (57) 30.8 ppb (29) N/A 30.0 ppb (28) N/A N/A N/A N/A N/A 22.0 μg/m3 (71) 71.0
 
Jan. 22, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 19.0 μg/m3 (65) 65.0
 
Jan. 22, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 11.0 μg/m3 (46) 46.0
 
Jan. 22, 2019, midnight 38.3 ppb (35) 9.2 ppb (9) N/A 29.0 ppb (27) N/A N/A N/A N/A N/A 8.0 μg/m3 (33) 35.0
 
Jan. 21, 2019, 11 p.m. 34.3 ppb (32) 8.6 ppb (8) N/A 26.0 ppb (24) N/A N/A N/A N/A N/A 8.0 μg/m3 (33) 33.0
 
Jan. 21, 2019, 10 p.m. 32.4 ppb (30) 9.5 ppb (9) N/A 23.0 ppb (21) N/A N/A N/A N/A N/A 9.0 μg/m3 (38) 38.0
 
Jan. 21, 2019, 9 p.m. 35.1 ppb (32) 14.8 ppb (14) N/A 20.0 ppb (19) N/A N/A N/A N/A N/A 11.0 μg/m3 (46) 46.0
 
Jan. 21, 2019, 8 p.m. 32.8 ppb (30) 12.0 ppb (11) N/A 21.0 ppb (19) N/A N/A N/A N/A N/A 6.0 μg/m3 (25) 30.0
 
Jan. 21, 2019, 7 p.m. 9.1 ppb (8) 2.4 ppb (2) N/A 7.0 ppb (6) N/A N/A N/A N/A N/A 4.0 μg/m3 (17) 17.0
 
Jan. 21, 2019, 6 p.m. 28.0 ppb (26) 14.1 ppb (13) N/A 14.0 ppb (13) N/A N/A N/A N/A N/A 8.0 μg/m3 (33) 33.0
 
Jan. 21, 2019, 5 p.m. 57.0 ppb (53) 40.3 ppb (37) N/A 17.0 ppb (16) N/A N/A N/A N/A N/A 11.0 μg/m3 (46) 53.0
 
Jan. 21, 2019, 4 p.m. 39.0 ppb (36) 24.7 ppb (23) N/A 14.0 ppb (13) N/A N/A N/A N/A N/A 13.0 μg/m3 (52) 52.0
 
Jan. 21, 2019, 3 p.m. 51.9 ppb (48) 38.4 ppb (36) N/A 13.0 ppb (12) N/A N/A N/A N/A N/A 15.0 μg/m3 (56) 56.0
 
Jan. 21, 2019, 2 p.m. 88.6 ppb (87) 72.5 ppb (70) N/A 16.0 ppb (15) N/A N/A N/A N/A N/A 17.0 μg/m3 (61) 87.0
 
Jan. 21, 2019, 1 p.m. 84.4 ppb (82) 68.9 ppb (66) N/A 15.0 ppb (14) N/A N/A N/A N/A N/A 16.0 μg/m3 (59) 82.0
 
Jan. 21, 2019, noon 43.6 ppb (40) 29.4 ppb (27) N/A 14.0 ppb (13) N/A N/A N/A N/A N/A 17.0 μg/m3 (61) 61.0
 
Jan. 21, 2019, 11 a.m. 57.0 ppb (53) 41.1 ppb (38) N/A 16.0 ppb (15) N/A N/A N/A N/A N/A 10.0 μg/m3 (42) 53.0
 
Jan. 21, 2019, 10 a.m. 73.0 ppb (70) 57.1 ppb (53) N/A 16.0 ppb (15) N/A N/A N/A N/A N/A 18.0 μg/m3 (63) 70.0
 
Jan. 21, 2019, 9 a.m. 89.9 ppb (88) 68.5 ppb (65) N/A 21.0 ppb (19) N/A N/A N/A N/A N/A 17.0 μg/m3 (61) 88.0
 
Jan. 21, 2019, 8 a.m. 109.4 ppb (102) 86.2 ppb (84) N/A 23.0 ppb (21) N/A N/A N/A N/A N/A 28.0 μg/m3 (84) 102.0
 
Jan. 21, 2019, 7 a.m. 71.1 ppb (68) 45.0 ppb (42) N/A 26.0 ppb (24) N/A N/A N/A N/A N/A 14.0 μg/m3 (54) 68.0
 
Jan. 21, 2019, 6 a.m. 37.3 ppb (35) 11.4 ppb (11) N/A 26.0 ppb (24) N/A N/A N/A N/A N/A 12.0 μg/m3 (50) 50.0
 
Jan. 21, 2019, 5 a.m. 59.4 ppb (56) 30.5 ppb (28) N/A 29.0 ppb (27) N/A N/A N/A N/A N/A 8.0 μg/m3 (33) 56.0
 
Jan. 21, 2019, 4 a.m. 39.3 ppb (36) 10.9 ppb (10) N/A 28.0 ppb (26) N/A N/A N/A N/A N/A 8.0 μg/m3 (33) 36.0
 
Jan. 21, 2019, 3 a.m. 37.3 ppb (35) 7.5 ppb (7) N/A 30.0 ppb (28) N/A N/A N/A N/A N/A 6.0 μg/m3 (25) 35.0
 
Jan. 21, 2019, 2 a.m. 24.7 ppb (23) 2.9 ppb (3) N/A 22.0 ppb (20) N/A N/A N/A N/A N/A 4.0 μg/m3 (17) 23.0
 
Jan. 21, 2019, 1 a.m. 27.9 ppb (26) 8.5 ppb (8) N/A 19.0 ppb (18) N/A N/A N/A N/A N/A 4.0 μg/m3 (17) 26.0
 
Jan. 21, 2019, midnight 26.5 ppb (25) 10.9 ppb (10) N/A 16.0 ppb (15) N/A N/A N/A N/A N/A 6.0 μg/m3 (25) 25.0
 
Jan. 20, 2019, 11 p.m. 25.8 ppb (24) 12.8 ppb (12) N/A 13.0 ppb (12) N/A N/A N/A N/A N/A 4.0 μg/m3 (17) 24.0
 
Jan. 20, 2019, 10 p.m. 19.3 ppb (18) 8.4 ppb (8) N/A 11.0 ppb (10) N/A N/A N/A N/A N/A 3.0 μg/m3 (12) 18.0
 
Jan. 20, 2019, 9 p.m. 21.2 ppb (20) 10.0 ppb (9) N/A 11.0 ppb (10) N/A N/A N/A N/A N/A 2.0 μg/m3 (8) 20.0
 
Jan. 20, 2019, 8 p.m. 24.6 ppb (23) 10.4 ppb (10) N/A 14.0 ppb (13) N/A N/A N/A N/A N/A 4.0 μg/m3 (17) 23.0
 
Jan. 20, 2019, 7 p.m. 20.6 ppb (19) 6.4 ppb (6) N/A 14.0 ppb (13) N/A N/A N/A N/A N/A 5.0 μg/m3 (21) 21.0
 
Jan. 20, 2019, 6 p.m. 16.9 ppb (16) 5.1 ppb (5) N/A 12.0 ppb (11) N/A N/A N/A N/A N/A 4.0 μg/m3 (17) 17.0
 
Jan. 20, 2019, 5 p.m. 13.2 ppb (12) 3.4 ppb (3) N/A 10.0 ppb (9) N/A N/A N/A N/A N/A 6.0 μg/m3 (25) 25.0
 
Jan. 20, 2019, 4 p.m. 11.8 ppb (11) 2.7 ppb (3) N/A 9.0 ppb (8) N/A N/A N/A N/A N/A 6.0 μg/m3 (25) 25.0
 
Jan. 20, 2019, 3 p.m. 16.8 ppb (16) 5.7 ppb (5) N/A 11.0 ppb (10) N/A N/A N/A N/A N/A 6.0 μg/m3 (25) 25.0
 
Jan. 20, 2019, 2 p.m. 18.0 ppb (17) 5.4 ppb (5) N/A 13.0 ppb (12) N/A N/A N/A N/A N/A 3.0 μg/m3 (12) 17.0
 
Jan. 20, 2019, 1 p.m. 23.7 ppb (22) 5.1 ppb (5) N/A 19.0 ppb (18) N/A N/A N/A N/A N/A 3.0 μg/m3 (12) 22.0
 
Jan. 20, 2019, noon 22.9 ppb (21) 4.5 ppb (4) N/A 18.0 ppb (17) N/A N/A N/A N/A N/A 5.0 μg/m3 (21) 21.0
 
Jan. 20, 2019, 11 a.m. 12.7 ppb (12) 1.7 ppb (2) N/A 11.0 ppb (10) N/A N/A N/A N/A N/A 6.0 μg/m3 (25) 25.0
 
Jan. 20, 2019, 10 a.m. 22.6 ppb (21) 5.3 ppb (5) N/A 17.0 ppb (16) N/A N/A N/A N/A N/A 8.0 μg/m3 (33) 33.0
 
Jan. 20, 2019, 9 a.m. 47.1 ppb (44) 21.5 ppb (20) N/A 26.0 ppb (24) N/A N/A N/A N/A N/A 8.0 μg/m3 (33) 44.0
 
Jan. 20, 2019, 8 a.m. 10.2 ppb (9) 0.6 ppb (1) N/A 10.0 ppb (9) N/A N/A N/A N/A N/A 7.0 μg/m3 (29) 29.0
 
Jan. 20, 2019, 7 a.m. 14.4 ppb (13) 1.3 ppb (1) N/A 13.0 ppb (12) N/A N/A N/A N/A N/A 10.0 μg/m3 (42) 42.0
 
Jan. 20, 2019, 6 a.m. 25.4 ppb (24) 4.3 ppb (4) N/A 21.0 ppb (19) N/A N/A N/A N/A N/A 14.0 μg/m3 (54) 54.0
 
Jan. 20, 2019, 5 a.m. 13.1 ppb (12) 0.7 ppb (1) N/A 12.0 ppb (11) N/A N/A N/A N/A N/A 11.0 μg/m3 (46) 46.0
 
Jan. 20, 2019, 4 a.m. 14.1 ppb (13) 1.6 ppb (1) N/A 12.0 ppb (11) N/A N/A N/A N/A N/A 4.0 μg/m3 (17) 17.0
 
Jan. 20, 2019, 3 a.m. 27.1 ppb (25) 7.0 ppb (6) N/A 20.0 ppb (19) N/A N/A N/A N/A N/A 5.0 μg/m3 (21) 25.0
 
Jan. 20, 2019, 2 a.m. 37.3 ppb (35) 11.6 ppb (11) N/A 26.0 ppb (24) N/A N/A N/A N/A N/A 6.0 μg/m3 (25) 35.0
 
Jan. 20, 2019, 1 a.m. 25.8 ppb (24) 6.6 ppb (6) N/A 19.0 ppb (18) N/A N/A N/A N/A N/A 4.0 μg/m3 (17) 24.0
 
Jan. 20, 2019, midnight 25.3 ppb (23) 12.0 ppb (11) N/A 13.0 ppb (12) N/A N/A N/A N/A N/A 6.0 μg/m3 (25) 25.0
 
Jan. 19, 2019, 11 p.m. 27.7 ppb (26) 13.0 ppb (12) N/A 15.0 ppb (14) N/A N/A N/A N/A N/A 7.0 μg/m3 (29) 29.0
 
Jan. 19, 2019, 10 p.m. 26.6 ppb (25) 11.5 ppb (11) N/A 15.0 ppb (14) N/A N/A N/A N/A N/A 7.0 μg/m3 (29) 29.0
 
Jan. 19, 2019, 9 p.m. 22.0 ppb (20) 10.9 ppb (10) N/A 11.0 ppb (10) N/A N/A N/A N/A N/A 6.0 μg/m3 (25) 25.0
 
Jan. 19, 2019, 8 p.m. 25.0 ppb (23) 12.3 ppb (11) N/A 13.0 ppb (12) N/A N/A N/A N/A N/A 10.0 μg/m3 (42) 42.0
 
Jan. 19, 2019, 7 p.m. 34.8 ppb (32) 16.1 ppb (15) N/A 19.0 ppb (18) N/A N/A N/A N/A N/A 7.0 μg/m3 (29) 32.0
 
Jan. 19, 2019, 6 p.m. 36.5 ppb (34) 15.6 ppb (14) N/A 21.0 ppb (19) N/A N/A N/A N/A N/A 7.0 μg/m3 (29) 34.0
 
Jan. 19, 2019, 5 p.m. 38.2 ppb (35) 17.6 ppb (16) N/A 21.0 ppb (19) N/A N/A N/A N/A N/A 3.0 μg/m3 (12) 35.0
 
Jan. 19, 2019, 4 p.m. 38.4 ppb (36) 16.0 ppb (15) N/A 22.0 ppb (20) N/A N/A N/A N/A N/A 7.0 μg/m3 (29) 36.0
 
Jan. 19, 2019, 3 p.m. 25.6 ppb (24) 9.1 ppb (8) N/A 16.0 ppb (15) N/A N/A N/A N/A N/A 6.0 μg/m3 (25) 25.0
 
Jan. 19, 2019, 2 p.m. 18.1 ppb (17) 6.8 ppb (6) N/A 11.0 ppb (10) N/A N/A N/A N/A N/A 5.0 μg/m3 (21) 21.0
 
Jan. 19, 2019, 1 p.m. 14.7 ppb (14) 5.8 ppb (5) N/A 9.0 ppb (8) N/A N/A N/A N/A N/A 4.0 μg/m3 (17) 17.0
 
Jan. 19, 2019, noon 12.7 ppb (12) 5.0 ppb (5) N/A 8.0 ppb (7) N/A N/A N/A N/A N/A 3.0 μg/m3 (12) 12.0
 
Jan. 19, 2019, 11 a.m. 8.5 ppb (8) 3.2 ppb (3) N/A 5.0 ppb (5) N/A N/A N/A N/A N/A 3.0 μg/m3 (12) 12.0
 
Jan. 19, 2019, 10 a.m. 10.8 ppb (10) 4.8 ppb (4) N/A 6.0 ppb (6) N/A N/A N/A N/A N/A 4.0 μg/m3 (17) 17.0
 
Jan. 19, 2019, 9 a.m. 24.5 ppb (23) 6.7 ppb (6) N/A 18.0 ppb (17) N/A N/A N/A N/A N/A 7.0 μg/m3 (29) 29.0
 
Jan. 19, 2019, 8 a.m. 39.4 ppb (36) 12.3 ppb (11) N/A 27.0 ppb (25) N/A N/A N/A N/A N/A 9.0 μg/m3 (38) 38.0
 
Jan. 19, 2019, 7 a.m. 32.0 ppb (30) 4.5 ppb (4) N/A 27.0 ppb (25) N/A N/A N/A N/A N/A 8.0 μg/m3 (33) 33.0
 
Jan. 19, 2019, 6 a.m. 32.4 ppb (30) 7.3 ppb (7) N/A 25.0 ppb (23) N/A N/A N/A N/A N/A 8.0 μg/m3 (33) 33.0
 
Jan. 19, 2019, 5 a.m. 39.3 ppb (36) 10.7 ppb (10) N/A 29.0 ppb (27) N/A N/A N/A N/A N/A 6.0 μg/m3 (25) 36.0
 
Jan. 19, 2019, 4 a.m. 48.2 ppb (45) 14.2 ppb (13) N/A 34.0 ppb (31) N/A N/A N/A N/A N/A 6.0 μg/m3 (25) 45.0
 
Jan. 19, 2019, 3 a.m. 50.5 ppb (47) 16.0 ppb (15) N/A 34.0 ppb (31) N/A N/A N/A N/A N/A 7.0 μg/m3 (29) 47.0
 
Jan. 19, 2019, 2 a.m. 57.6 ppb (54) 23.2 ppb (21) N/A 34.0 ppb (31) N/A N/A N/A N/A N/A 8.0 μg/m3 (33) 54.0
 
Jan. 19, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 9.0 μg/m3 (38) 38.0
 
Jan. 19, 2019, midnight 12.7 ppb (12) 1.5 ppb (1) N/A 11.0 ppb (10) N/A N/A N/A N/A N/A 8.0 μg/m3 (33) 33.0
 
Jan. 18, 2019, 11 p.m. 5.8 ppb (5) 0.5 ppb (0) N/A 5.0 ppb (5) N/A N/A N/A N/A N/A 3.0 μg/m3 (12) 12.0
 
Jan. 18, 2019, 10 p.m. 11.2 ppb (10) 1.9 ppb (2) N/A 9.0 ppb (8) N/A N/A N/A N/A N/A 3.0 μg/m3 (12) 12.0
 
Jan. 18, 2019, 9 p.m. 23.7 ppb (22) 8.6 ppb (8) N/A 15.0 ppb (14) N/A N/A N/A N/A N/A 3.0 μg/m3 (12) 22.0
 
Jan. 18, 2019, 8 p.m. 25.8 ppb (24) 10.1 ppb (9) N/A 16.0 ppb (15) N/A N/A N/A N/A N/A 2.0 μg/m3 (8) 24.0
 
Jan. 18, 2019, 7 p.m. 39.3 ppb (36) 19.0 ppb (18) N/A 20.0 ppb (19) N/A N/A N/A N/A N/A 5.0 μg/m3 (21) 36.0
 
Jan. 18, 2019, 6 p.m. 64.8 ppb (61) 36.2 ppb (34) N/A 29.0 ppb (27) N/A N/A N/A N/A N/A 7.0 μg/m3 (29) 61.0
 
Jan. 18, 2019, 5 p.m. 65.2 ppb (62) 38.1 ppb (35) N/A 27.0 ppb (25) N/A N/A N/A N/A N/A 4.0 μg/m3 (17) 62.0
 
Jan. 18, 2019, 4 p.m. 56.1 ppb (52) 30.3 ppb (28) N/A 26.0 ppb (24) N/A N/A N/A N/A N/A 7.0 μg/m3 (29) 52.0
 
Jan. 18, 2019, 3 p.m. 50.0 ppb (46) 24.7 ppb (23) N/A 25.0 ppb (23) N/A N/A N/A N/A N/A 9.0 μg/m3 (38) 46.0
 
Jan. 18, 2019, 2 p.m. 72.7 ppb (70) 42.3 ppb (39) N/A 30.0 ppb (28) N/A N/A N/A N/A N/A 5.0 μg/m3 (21) 70.0
 
Jan. 18, 2019, 1 p.m. 51.6 ppb (48) 23.4 ppb (22) N/A 28.0 ppb (26) N/A N/A N/A N/A N/A 4.0 μg/m3 (17) 48.0
 
Jan. 18, 2019, noon 23.6 ppb (22) 5.7 ppb (5) N/A 18.0 ppb (17) N/A N/A N/A N/A N/A 4.0 μg/m3 (17) 22.0
 
Jan. 18, 2019, 11 a.m. 19.4 ppb (18) 6.4 ppb (6) N/A 13.0 ppb (12) N/A N/A N/A N/A N/A 4.0 μg/m3 (17) 18.0
 
Jan. 18, 2019, 10 a.m. 10.8 ppb (10) 3.6 ppb (3) N/A 7.0 ppb (6) N/A N/A N/A N/A N/A 2.0 μg/m3 (8) 10.0
 
Jan. 18, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 4.0 μg/m3 (17) 17.0
 
Jan. 18, 2019, 8 a.m. 13.7 ppb (13) 4.8 ppb (4) N/A 9.0 ppb (8) N/A N/A N/A N/A N/A 7.0 μg/m3 (29) 29.0
 
Jan. 18, 2019, 7 a.m. 14.7 ppb (14) 6.2 ppb (6) N/A 9.0 ppb (8) N/A N/A N/A N/A N/A 4.0 μg/m3 (17) 17.0
 
Jan. 18, 2019, 6 a.m. 12.8 ppb (12) 4.9 ppb (5) N/A 8.0 ppb (7) N/A N/A N/A N/A N/A 3.0 μg/m3 (12) 12.0
 
Jan. 18, 2019, 5 a.m. 13.0 ppb (12) 4.6 ppb (4) N/A 8.0 ppb (7) N/A N/A N/A N/A N/A 1.0 μg/m3 (4) 12.0
 
Jan. 18, 2019, 4 a.m. 16.1 ppb (15) 5.9 ppb (5) N/A 10.0 ppb (9) N/A N/A N/A N/A N/A 2.0 μg/m3 (8) 15.0
 
Jan. 18, 2019, 3 a.m. 19.6 ppb (18) 8.1 ppb (8) N/A 12.0 ppb (11) N/A N/A N/A N/A N/A 4.0 μg/m3 (17) 18.0
 
Jan. 18, 2019, 2 a.m. 21.3 ppb (20) 7.8 ppb (7) N/A 13.0 ppb (12) N/A N/A N/A N/A N/A 4.0 μg/m3 (17) 20.0
 
Jan. 18, 2019, 1 a.m. 23.6 ppb (22) 9.6 ppb (9) N/A 14.0 ppb (13) N/A N/A N/A N/A N/A 3.0 μg/m3 (12) 22.0
 
Jan. 18, 2019, midnight 33.6 ppb (31) 13.3 ppb (12) N/A 20.0 ppb (19) N/A N/A N/A N/A N/A 5.0 μg/m3 (21) 31.0
 
Jan. 17, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 3.0 μg/m3 (12) 12.0
 
Jan. 17, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 2.0 μg/m3 (8) 8.0
 
Jan. 17, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 5.0 μg/m3 (21) 21.0
 
Jan. 17, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 5.0 μg/m3 (21) 21.0
 
Jan. 17, 2019, 7 p.m. 163.6 ppb (112) 131.9 ppb (106) N/A 32.0 ppb (30) N/A N/A N/A N/A N/A 17.0 μg/m3 (61) 112.0
 
Jan. 17, 2019, 6 p.m. 105.6 ppb (101) 77.3 ppb (75) N/A 28.0 ppb (26) N/A N/A N/A N/A N/A 10.0 μg/m3 (42) 101.0
 
Jan. 17, 2019, 5 p.m. 134.6 ppb (106) 104.2 ppb (101) N/A 30.0 ppb (28) N/A N/A N/A N/A N/A 13.0 μg/m3 (52) 106.0
 
Jan. 17, 2019, 4 p.m. 158.5 ppb (111) 123.9 ppb (104) N/A 35.0 ppb (32) N/A N/A N/A N/A N/A 11.0 μg/m3 (46) 111.0
 
Jan. 17, 2019, 3 p.m. 88.1 ppb (86) 56.2 ppb (52) N/A 32.0 ppb (30) N/A N/A N/A N/A N/A 3.0 μg/m3 (12) 86.0
 
Jan. 17, 2019, 2 p.m. 68.2 ppb (65) 37.6 ppb (35) N/A 31.0 ppb (29) N/A N/A N/A N/A N/A 5.0 μg/m3 (21) 65.0
 
Jan. 17, 2019, 1 p.m. 126.4 ppb (105) 90.7 ppb (89) N/A 36.0 ppb (33) N/A N/A N/A N/A N/A 9.0 μg/m3 (38) 105.0
 
Jan. 17, 2019, noon 59.8 ppb (56) 30.3 ppb (28) N/A 30.0 ppb (28) N/A N/A N/A N/A N/A 9.0 μg/m3 (38) 56.0
 
Jan. 17, 2019, 11 a.m. 49.9 ppb (46) 20.8 ppb (19) N/A 29.0 ppb (27) N/A N/A N/A N/A N/A 7.0 μg/m3 (29) 46.0
 
Jan. 17, 2019, 10 a.m. 33.2 ppb (31) 5.8 ppb (5) N/A 27.0 ppb (25) N/A N/A N/A N/A N/A 6.0 μg/m3 (25) 31.0
 
Jan. 17, 2019, 9 a.m. 43.2 ppb (40) 12.7 ppb (12) N/A 31.0 ppb (29) N/A N/A N/A N/A N/A 7.0 μg/m3 (29) 40.0
 
Jan. 17, 2019, 8 a.m. 50.2 ppb (46) 21.5 ppb (20) N/A 29.0 ppb (27) N/A N/A N/A N/A N/A 6.0 μg/m3 (25) 46.0
 
Jan. 17, 2019, 7 a.m. 51.7 ppb (48) 25.0 ppb (23) N/A 27.0 ppb (25) N/A N/A N/A N/A N/A 7.0 μg/m3 (29) 48.0
 
Jan. 17, 2019, 6 a.m. 48.4 ppb (45) 21.9 ppb (20) N/A 26.0 ppb (24) N/A N/A N/A N/A N/A 6.0 μg/m3 (25) 45.0
 
Jan. 17, 2019, 5 a.m. 41.2 ppb (38) 15.5 ppb (14) N/A 26.0 ppb (24) N/A N/A N/A N/A N/A 6.0 μg/m3 (25) 38.0
 
Jan. 17, 2019, 4 a.m. 41.0 ppb (38) 16.4 ppb (15) N/A 25.0 ppb (23) N/A N/A N/A N/A N/A 4.0 μg/m3 (17) 38.0
 
Jan. 17, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 4.0 μg/m3 (17) 17.0
 
Jan. 17, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 7.0 μg/m3 (29) 29.0