AQSQID: 530530024

Site Name: Tacoma-S 36th St

Location: Tacoma (S End), WA

Reporting: True, Located: True

Current AQI: 28.0

Tacoma (S End) WA, US: 47.22634, -122.46256

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
Jan. 23, 2020, 6 a.m. 30.7 ppb (28) 12.3 ppb (11) N/A 18.0 ppb (17) N/A N/A N/A N/A N/A 4.0 μg/m3 (17) 28.0
 
Jan. 23, 2020, 5 a.m. 18.3 ppb (17) 2.8 ppb (3) N/A 15.0 ppb (14) N/A N/A N/A N/A N/A 8.0 μg/m3 (33) 33.0
 
Jan. 23, 2020, 4 a.m. 49.6 ppb (46) 22.0 ppb (20) N/A 28.0 ppb (26) N/A N/A N/A N/A N/A 13.0 μg/m3 (52) 52.0
 
Jan. 23, 2020, 3 a.m. 24.1 ppb (22) 4.2 ppb (4) N/A 20.0 ppb (19) N/A N/A N/A N/A N/A 5.0 μg/m3 (21) 22.0
 
Jan. 23, 2020, 2 a.m. 39.0 ppb (36) 19.0 ppb (18) N/A 20.0 ppb (19) N/A N/A N/A N/A N/A 6.0 μg/m3 (25) 36.0
 
Jan. 23, 2020, 1 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 8.0 μg/m3 (33) 33.0
 
Jan. 23, 2020, midnight 39.6 ppb (37) 15.5 ppb (14) N/A 24.0 ppb (22) N/A N/A N/A N/A N/A 9.0 μg/m3 (38) 38.0
 
Jan. 22, 2020, 11 p.m. 30.7 ppb (28) 8.3 ppb (8) N/A 22.0 ppb (20) N/A N/A N/A N/A N/A 6.0 μg/m3 (25) 28.0
 
Jan. 22, 2020, 10 p.m. 34.5 ppb (32) 12.4 ppb (11) N/A 22.0 ppb (20) N/A N/A N/A N/A N/A 6.0 μg/m3 (25) 32.0
 
Jan. 22, 2020, 9 p.m. 51.6 ppb (48) 26.0 ppb (24) N/A 26.0 ppb (24) N/A N/A N/A N/A N/A 6.0 μg/m3 (25) 48.0
 
Jan. 22, 2020, 8 p.m. 48.1 ppb (45) 22.3 ppb (21) N/A 26.0 ppb (24) N/A N/A N/A N/A N/A 3.0 μg/m3 (12) 45.0
 
Jan. 22, 2020, 7 p.m. 30.7 ppb (28) 8.4 ppb (8) N/A 22.0 ppb (20) N/A N/A N/A N/A N/A 2.0 μg/m3 (8) 28.0
 
Jan. 22, 2020, 6 p.m. 12.8 ppb (12) 2.0 ppb (2) N/A 11.0 ppb (10) N/A N/A N/A N/A N/A 2.0 μg/m3 (8) 12.0
 
Jan. 22, 2020, 5 p.m. 18.3 ppb (17) 4.0 ppb (4) N/A 14.0 ppb (13) N/A N/A N/A N/A N/A 4.0 μg/m3 (17) 17.0
 
Jan. 22, 2020, 4 p.m. 34.6 ppb (32) 15.6 ppb (14) N/A 19.0 ppb (18) N/A N/A N/A N/A N/A 5.0 μg/m3 (21) 32.0
 
Jan. 22, 2020, 3 p.m. 55.7 ppb (52) 28.4 ppb (26) N/A 27.0 ppb (25) N/A N/A N/A N/A N/A 5.0 μg/m3 (21) 52.0
 
Jan. 22, 2020, 2 p.m. 35.5 ppb (33) 14.1 ppb (13) N/A 21.0 ppb (19) N/A N/A N/A N/A N/A 2.0 μg/m3 (8) 33.0
 
Jan. 22, 2020, 1 p.m. 15.7 ppb (15) 4.1 ppb (4) N/A 12.0 ppb (11) N/A N/A N/A N/A N/A 2.0 μg/m3 (8) 15.0
 
Jan. 22, 2020, noon 12.0 ppb (11) 3.5 ppb (3) N/A 9.0 ppb (8) N/A N/A N/A N/A N/A 3.0 μg/m3 (12) 12.0
 
Jan. 22, 2020, 11 a.m. 9.2 ppb (9) 1.6 ppb (1) N/A 8.0 ppb (7) N/A N/A N/A N/A N/A 3.0 μg/m3 (12) 12.0
 
Jan. 22, 2020, 10 a.m. 14.3 ppb (13) 4.2 ppb (4) N/A 10.0 ppb (9) N/A N/A N/A N/A N/A 2.0 μg/m3 (8) 13.0
 
Jan. 22, 2020, 9 a.m. 10.5 ppb (10) 3.5 ppb (3) N/A 7.0 ppb (6) N/A N/A N/A N/A N/A 3.0 μg/m3 (12) 12.0
 
Jan. 22, 2020, 8 a.m. 11.6 ppb (11) 3.0 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. 22, 2020, 7 a.m. 14.3 ppb (13) 4.9 ppb (5) N/A 9.0 ppb (8) N/A N/A N/A N/A N/A 5.0 μg/m3 (21) 21.0
 
Jan. 22, 2020, 6 a.m. 11.6 ppb (11) 3.2 ppb (3) N/A 8.0 ppb (7) N/A N/A N/A N/A N/A 1.0 μg/m3 (4) 11.0
 
Jan. 22, 2020, 5 a.m. 12.0 ppb (11) 4.1 ppb (4) N/A 8.0 ppb (7) N/A N/A N/A N/A N/A 0.0 μg/m3 (0) 11.0
 
Jan. 22, 2020, 4 a.m. 16.2 ppb (15) 5.3 ppb (5) N/A 11.0 ppb (10) N/A N/A N/A N/A N/A 3.0 μg/m3 (12) 15.0
 
Jan. 22, 2020, 3 a.m. 22.4 ppb (21) 7.8 ppb (7) N/A 15.0 ppb (14) N/A N/A N/A N/A N/A 5.0 μg/m3 (21) 21.0
 
Jan. 22, 2020, 2 a.m. 18.8 ppb (17) 5.2 ppb (5) N/A 14.0 ppb (13) N/A N/A N/A N/A N/A 1.0 μg/m3 (4) 17.0
 
Jan. 22, 2020, 1 a.m. 20.3 ppb (19) 5.3 ppb (5) N/A 15.0 ppb (14) N/A N/A N/A N/A N/A 1.0 μg/m3 (4) 19.0
 
Jan. 22, 2020, midnight 24.2 ppb (22) 9.0 ppb (8) N/A 15.0 ppb (14) N/A N/A N/A N/A N/A 2.0 μg/m3 (8) 22.0
 
Jan. 21, 2020, 11 p.m. 22.0 ppb (20) 8.9 ppb (8) N/A 13.0 ppb (12) N/A N/A N/A N/A N/A 3.0 μg/m3 (12) 20.0
 
Jan. 21, 2020, 10 p.m. 32.4 ppb (30) 14.8 ppb (14) N/A 18.0 ppb (17) N/A N/A N/A N/A N/A 4.0 μg/m3 (17) 30.0
 
Jan. 21, 2020, 9 p.m. 24.1 ppb (22) 10.1 ppb (9) N/A 14.0 ppb (13) N/A N/A N/A N/A N/A 1.0 μg/m3 (4) 22.0
 
Jan. 21, 2020, 8 p.m. 26.5 ppb (25) 11.6 ppb (11) N/A 15.0 ppb (14) N/A N/A N/A N/A N/A 4.0 μg/m3 (17) 25.0
 
Jan. 21, 2020, 7 p.m. 41.2 ppb (38) 17.4 ppb (16) N/A 24.0 ppb (22) N/A N/A N/A N/A N/A 5.0 μg/m3 (21) 38.0
 
Jan. 21, 2020, 6 p.m. 17.2 ppb (16) 4.9 ppb (5) N/A 12.0 ppb (11) N/A N/A N/A N/A N/A 2.0 μg/m3 (8) 16.0
 
Jan. 21, 2020, 5 p.m. 6.4 ppb (6) 1.1 ppb (1) N/A 5.0 ppb (5) N/A N/A N/A N/A N/A 2.0 μg/m3 (8) 8.0
 
Jan. 21, 2020, 4 p.m. 7.7 ppb (7) 0.9 ppb (1) N/A 7.0 ppb (6) N/A N/A N/A N/A N/A 1.0 μg/m3 (4) 7.0
 
Jan. 21, 2020, 3 p.m. 15.8 ppb (15) 2.8 ppb (3) N/A 13.0 ppb (12) N/A N/A N/A N/A N/A 4.0 μg/m3 (17) 17.0
 
Jan. 21, 2020, 2 p.m. 27.7 ppb (26) 7.5 ppb (7) N/A 20.0 ppb (19) N/A N/A N/A N/A N/A 6.0 μg/m3 (25) 26.0
 
Jan. 21, 2020, 1 p.m. 11.6 ppb (11) 1.7 ppb (2) N/A 10.0 ppb (9) N/A N/A N/A N/A N/A 5.0 μg/m3 (21) 21.0
 
Jan. 21, 2020, noon 36.0 ppb (33) 18.4 ppb (17) N/A 18.0 ppb (17) N/A N/A N/A N/A N/A 6.0 μg/m3 (25) 33.0
 
Jan. 21, 2020, 11 a.m. 22.7 ppb (21) 10.3 ppb (10) N/A 12.0 ppb (11) N/A N/A N/A N/A N/A 6.0 μg/m3 (25) 25.0
 
Jan. 21, 2020, 10 a.m. 22.1 ppb (20) 12.6 ppb (12) N/A 9.0 ppb (8) N/A N/A N/A N/A N/A 7.0 μg/m3 (29) 29.0
 
Jan. 21, 2020, 9 a.m. 23.8 ppb (22) 12.9 ppb (12) N/A 11.0 ppb (10) N/A N/A N/A N/A N/A 9.0 μg/m3 (38) 38.0
 
Jan. 21, 2020, 8 a.m. 61.5 ppb (58) 43.7 ppb (40) N/A 18.0 ppb (17) N/A N/A N/A N/A N/A 13.0 μg/m3 (52) 58.0
 
Jan. 21, 2020, 7 a.m. 72.4 ppb (70) 53.4 ppb (49) N/A 19.0 ppb (18) N/A N/A N/A N/A N/A 12.0 μg/m3 (50) 70.0
 
Jan. 21, 2020, 6 a.m. 88.2 ppb (86) 67.7 ppb (65) N/A 20.0 ppb (19) N/A N/A N/A N/A N/A 15.0 μg/m3 (56) 86.0
 
Jan. 21, 2020, 5 a.m. 65.6 ppb (62) 46.5 ppb (43) N/A 19.0 ppb (18) N/A N/A N/A N/A N/A 17.0 μg/m3 (61) 62.0
 
Jan. 21, 2020, 4 a.m. 64.1 ppb (61) 43.9 ppb (41) N/A 20.0 ppb (19) N/A N/A N/A N/A N/A 7.0 μg/m3 (29) 61.0
 
Jan. 21, 2020, 3 a.m. 83.2 ppb (81) 60.0 ppb (56) N/A 23.0 ppb (21) N/A N/A N/A N/A N/A 16.0 μg/m3 (59) 81.0
 
Jan. 21, 2020, 2 a.m. 70.6 ppb (68) 45.5 ppb (42) N/A 25.0 ppb (23) N/A N/A N/A N/A N/A 13.0 μg/m3 (52) 68.0
 
Jan. 21, 2020, 1 a.m. 64.6 ppb (61) 40.1 ppb (37) N/A 25.0 ppb (23) N/A N/A N/A N/A N/A 12.0 μg/m3 (50) 61.0
 
Jan. 21, 2020, midnight 35.9 ppb (33) 12.2 ppb (11) N/A 24.0 ppb (22) N/A N/A N/A N/A N/A 8.0 μg/m3 (33) 33.0
 
Jan. 20, 2020, 11 p.m. 57.0 ppb (53) 29.7 ppb (28) N/A 27.0 ppb (25) N/A N/A N/A N/A N/A 8.0 μg/m3 (33) 53.0
 
Jan. 20, 2020, 10 p.m. 50.4 ppb (47) 25.0 ppb (23) N/A 25.0 ppb (23) N/A N/A N/A N/A N/A 10.0 μg/m3 (42) 47.0
 
Jan. 20, 2020, 9 p.m. 44.3 ppb (41) 21.0 ppb (19) N/A 23.0 ppb (21) N/A N/A N/A N/A N/A 9.0 μg/m3 (38) 41.0
 
Jan. 20, 2020, 8 p.m. 38.1 ppb (35) 18.3 ppb (17) N/A 20.0 ppb (19) N/A N/A N/A N/A N/A 4.0 μg/m3 (17) 35.0
 
Jan. 20, 2020, 7 p.m. 43.7 ppb (40) 25.7 ppb (24) N/A 18.0 ppb (17) N/A N/A N/A N/A N/A 4.0 μg/m3 (17) 40.0
 
Jan. 20, 2020, 6 p.m. 64.6 ppb (61) 45.3 ppb (42) N/A 19.0 ppb (18) N/A N/A N/A N/A N/A 6.0 μg/m3 (25) 61.0
 
Jan. 20, 2020, 5 p.m. 77.1 ppb (75) 54.5 ppb (51) N/A 23.0 ppb (21) N/A N/A N/A N/A N/A 7.0 μg/m3 (29) 75.0
 
Jan. 20, 2020, 4 p.m. 75.5 ppb (73) 54.8 ppb (51) N/A 21.0 ppb (19) N/A N/A N/A N/A N/A 8.0 μg/m3 (33) 73.0
 
Jan. 20, 2020, 3 p.m. 87.7 ppb (86) 70.1 ppb (67) N/A 18.0 ppb (17) N/A N/A N/A N/A N/A 10.0 μg/m3 (42) 86.0
 
Jan. 20, 2020, 2 p.m. 55.3 ppb (51) 39.9 ppb (37) N/A 15.0 ppb (14) N/A N/A N/A N/A N/A 9.0 μg/m3 (38) 51.0
 
Jan. 20, 2020, 1 p.m. 72.5 ppb (70) 56.9 ppb (53) N/A 16.0 ppb (15) N/A N/A N/A N/A N/A 6.0 μg/m3 (25) 70.0
 
Jan. 20, 2020, noon 47.5 ppb (44) 35.8 ppb (33) N/A 12.0 ppb (11) N/A N/A N/A N/A N/A 3.0 μg/m3 (12) 44.0
 
Jan. 20, 2020, 11 a.m. 39.4 ppb (36) 26.7 ppb (25) N/A 13.0 ppb (12) N/A N/A N/A N/A N/A 3.0 μg/m3 (12) 36.0
 
Jan. 20, 2020, 10 a.m. 34.3 ppb (32) 21.4 ppb (20) N/A 13.0 ppb (12) N/A N/A N/A N/A N/A 7.0 μg/m3 (29) 32.0
 
Jan. 20, 2020, 9 a.m. 38.6 ppb (36) 24.8 ppb (23) N/A 14.0 ppb (13) N/A N/A N/A N/A N/A 12.0 μg/m3 (50) 50.0
 
Jan. 20, 2020, 8 a.m. 48.2 ppb (45) 31.9 ppb (30) N/A 16.0 ppb (15) N/A N/A N/A N/A N/A 10.0 μg/m3 (42) 45.0
 
Jan. 20, 2020, 7 a.m. 54.9 ppb (51) 38.1 ppb (35) N/A 17.0 ppb (16) N/A N/A N/A N/A N/A 9.0 μg/m3 (38) 51.0
 
Jan. 20, 2020, 6 a.m. 39.8 ppb (37) 25.3 ppb (23) N/A 14.0 ppb (13) N/A N/A N/A N/A N/A 7.0 μg/m3 (29) 37.0
 
Jan. 20, 2020, 5 a.m. 49.6 ppb (46) 34.2 ppb (32) N/A 15.0 ppb (14) N/A N/A N/A N/A N/A 12.0 μg/m3 (50) 50.0
 
Jan. 20, 2020, 4 a.m. 39.8 ppb (37) 23.6 ppb (22) N/A 16.0 ppb (15) N/A N/A N/A N/A N/A 10.0 μg/m3 (42) 42.0
 
Jan. 20, 2020, 3 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 10.0 μg/m3 (42) 42.0
 
Jan. 20, 2020, 2 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 15.0 μg/m3 (56) 56.0
 
Jan. 20, 2020, 1 a.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. 20, 2020, midnight 30.1 ppb (28) 13.1 ppb (12) N/A 17.0 ppb (16) N/A N/A N/A N/A N/A 3.0 μg/m3 (12) 28.0
 
Jan. 19, 2020, 11 p.m. 27.2 ppb (25) 13.2 ppb (12) N/A 14.0 ppb (13) N/A N/A N/A N/A N/A 3.0 μg/m3 (12) 25.0
 
Jan. 19, 2020, 10 p.m. 34.8 ppb (32) 18.9 ppb (18) N/A 16.0 ppb (15) N/A N/A N/A N/A N/A 5.0 μg/m3 (21) 32.0
 
Jan. 19, 2020, 9 p.m. 40.8 ppb (38) 19.3 ppb (18) N/A 21.0 ppb (19) N/A N/A N/A N/A N/A 10.0 μg/m3 (42) 42.0
 
Jan. 19, 2020, 8 p.m. 44.2 ppb (41) 23.0 ppb (21) N/A 21.0 ppb (19) N/A N/A N/A N/A N/A 8.0 μg/m3 (33) 41.0
 
Jan. 19, 2020, 7 p.m. 59.9 ppb (56) 37.8 ppb (35) N/A 22.0 ppb (20) N/A N/A N/A N/A N/A 9.0 μg/m3 (38) 56.0
 
Jan. 19, 2020, 6 p.m. 52.1 ppb (48) 31.2 ppb (29) N/A 21.0 ppb (19) N/A N/A N/A N/A N/A 8.0 μg/m3 (33) 48.0
 
Jan. 19, 2020, 5 p.m. 61.9 ppb (58) 37.9 ppb (35) N/A 24.0 ppb (22) N/A N/A N/A N/A N/A 14.0 μg/m3 (54) 58.0
 
Jan. 19, 2020, 4 p.m. 48.8 ppb (45) 25.8 ppb (24) N/A 23.0 ppb (21) N/A N/A N/A N/A N/A 8.0 μg/m3 (33) 45.0
 
Jan. 19, 2020, 3 p.m. 34.1 ppb (32) 11.6 ppb (11) N/A 22.0 ppb (20) N/A N/A N/A N/A N/A 6.0 μg/m3 (25) 32.0
 
Jan. 19, 2020, 2 p.m. 22.2 ppb (21) 3.9 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. 19, 2020, 1 p.m. 24.2 ppb (22) 5.1 ppb (5) N/A 19.0 ppb (18) N/A N/A N/A N/A N/A 6.0 μg/m3 (25) 25.0
 
Jan. 19, 2020, noon 32.7 ppb (30) 10.7 ppb (10) N/A 22.0 ppb (20) N/A N/A N/A N/A N/A 6.0 μg/m3 (25) 30.0
 
Jan. 19, 2020, 11 a.m. 21.3 ppb (20) 3.3 ppb (3) N/A 18.0 ppb (17) N/A N/A N/A N/A N/A 6.0 μg/m3 (25) 25.0
 
Jan. 19, 2020, 10 a.m. 16.9 ppb (16) 3.7 ppb (3) N/A 13.0 ppb (12) N/A N/A N/A N/A N/A 5.0 μg/m3 (21) 21.0
 
Jan. 19, 2020, 9 a.m. 15.8 ppb (15) 1.6 ppb (1) N/A 14.0 ppb (13) N/A N/A N/A N/A N/A 6.0 μg/m3 (25) 25.0
 
Jan. 19, 2020, 8 a.m. 25.8 ppb (24) 4.1 ppb (4) N/A 22.0 ppb (20) N/A N/A N/A N/A N/A 3.0 μg/m3 (12) 24.0
 
Jan. 19, 2020, 7 a.m. 29.6 ppb (27) 5.6 ppb (5) N/A 24.0 ppb (22) N/A N/A N/A N/A N/A 4.0 μg/m3 (17) 27.0
 
Jan. 19, 2020, 6 a.m. 20.0 ppb (19) 3.4 ppb (3) N/A 17.0 ppb (16) N/A N/A N/A N/A N/A 2.0 μg/m3 (8) 19.0
 
Jan. 19, 2020, 5 a.m. 5.7 ppb (5) 0.6 ppb (1) 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, 2020, 4 a.m. 19.6 ppb (18) 3.5 ppb (3) N/A 16.0 ppb (15) N/A N/A N/A N/A N/A 2.0 μg/m3 (8) 18.0
 
Jan. 19, 2020, 3 a.m. 18.7 ppb (17) 6.8 ppb (6) N/A 12.0 ppb (11) N/A N/A N/A N/A N/A 3.0 μg/m3 (12) 17.0
 
Jan. 19, 2020, 2 a.m. 31.5 ppb (29) 12.5 ppb (12) N/A 19.0 ppb (18) N/A N/A N/A N/A N/A 6.0 μg/m3 (25) 29.0
 
Jan. 19, 2020, 1 a.m. 40.9 ppb (38) 17.8 ppb (16) N/A 23.0 ppb (21) N/A N/A N/A N/A N/A 5.0 μg/m3 (21) 38.0
 
Jan. 19, 2020, midnight 27.3 ppb (25) 10.2 ppb (9) N/A 17.0 ppb (16) N/A N/A N/A N/A N/A 2.0 μg/m3 (8) 25.0
 
Jan. 18, 2020, 11 p.m. 27.1 ppb (25) 9.8 ppb (9) N/A 17.0 ppb (16) N/A N/A N/A N/A N/A 2.0 μg/m3 (8) 25.0
 
Jan. 18, 2020, 10 p.m. 20.5 ppb (19) 5.8 ppb (5) N/A 15.0 ppb (14) N/A N/A N/A N/A N/A 1.0 μg/m3 (4) 19.0
 
Jan. 18, 2020, 9 p.m. 25.7 ppb (24) 9.6 ppb (9) N/A 16.0 ppb (15) N/A N/A N/A N/A N/A -1.0 μg/m3 (0) 24.0
 
Jan. 18, 2020, 8 p.m. 26.2 ppb (24) 9.9 ppb (9) N/A 16.0 ppb (15) N/A N/A N/A N/A N/A 4.0 μg/m3 (17) 24.0
 
Jan. 18, 2020, 7 p.m. 57.4 ppb (54) 29.0 ppb (27) N/A 28.0 ppb (26) N/A N/A N/A N/A N/A 8.0 μg/m3 (33) 54.0
 
Jan. 18, 2020, 6 p.m. 69.0 ppb (66) 39.5 ppb (37) N/A 29.0 ppb (27) N/A N/A N/A N/A N/A 7.0 μg/m3 (29) 66.0
 
Jan. 18, 2020, 5 p.m. 44.1 ppb (41) 17.0 ppb (16) N/A 27.0 ppb (25) N/A N/A N/A N/A N/A 5.0 μg/m3 (21) 41.0
 
Jan. 18, 2020, 4 p.m. 42.6 ppb (39) 15.3 ppb (14) N/A 27.0 ppb (25) N/A N/A N/A N/A N/A 6.0 μg/m3 (25) 39.0
 
Jan. 18, 2020, 3 p.m. 40.3 ppb (37) 12.6 ppb (12) N/A 28.0 ppb (26) N/A N/A N/A N/A N/A 7.0 μg/m3 (29) 37.0
 
Jan. 18, 2020, 2 p.m. 35.3 ppb (33) 6.1 ppb (6) N/A 29.0 ppb (27) N/A N/A N/A N/A N/A 6.0 μg/m3 (25) 33.0
 
Jan. 18, 2020, 1 p.m. 26.3 ppb (24) 2.9 ppb (3) N/A 23.0 ppb (21) N/A N/A N/A N/A N/A 2.0 μg/m3 (8) 24.0
 
Jan. 18, 2020, noon 13.0 ppb (12) 2.7 ppb (3) N/A 10.0 ppb (9) N/A N/A N/A N/A N/A 0.0 μg/m3 (0) 12.0
 
Jan. 18, 2020, 11 a.m. 4.3 ppb (4) 0.0 ppb (0) N/A 4.0 ppb (4) N/A N/A N/A N/A N/A 2.0 μg/m3 (8) 8.0
 
Jan. 18, 2020, 10 a.m. 3.5 ppb (3) 0.0 ppb (0) N/A 4.0 ppb (4) N/A N/A N/A N/A N/A 3.0 μg/m3 (12) 12.0
 
Jan. 18, 2020, 9 a.m. 6.0 ppb (6) 0.0 ppb (0) N/A 6.0 ppb (6) N/A N/A N/A N/A N/A 2.0 μg/m3 (8) 8.0
 
Jan. 18, 2020, 8 a.m. 6.6 ppb (6) 0.1 ppb (0) N/A 6.0 ppb (6) N/A N/A N/A N/A N/A 2.0 μg/m3 (8) 8.0
 
Jan. 18, 2020, 7 a.m. 18.7 ppb (17) 2.5 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. 18, 2020, 6 a.m. 27.8 ppb (26) 6.7 ppb (6) N/A 21.0 ppb (19) N/A N/A N/A N/A N/A 7.0 μg/m3 (29) 29.0
 
Jan. 18, 2020, 5 a.m. 34.6 ppb (32) 8.6 ppb (8) N/A 26.0 ppb (24) N/A N/A N/A N/A N/A 7.0 μg/m3 (29) 32.0
 
Jan. 18, 2020, 4 a.m. 43.6 ppb (40) 18.7 ppb (17) N/A 25.0 ppb (23) N/A N/A N/A N/A N/A 6.0 μg/m3 (25) 40.0
 
Jan. 18, 2020, 3 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 6.0 μg/m3 (25) 25.0
 
Jan. 18, 2020, 2 a.m. 25.1 ppb (23) 5.1 ppb (5) N/A 20.0 ppb (19) N/A N/A N/A N/A N/A 6.0 μg/m3 (25) 25.0
 
Jan. 18, 2020, 1 a.m. 58.7 ppb (55) 29.3 ppb (27) N/A 29.0 ppb (27) N/A N/A N/A N/A N/A N/A 55.0
 
Jan. 18, 2020, midnight 25.5 ppb (24) 3.3 ppb (3) N/A 22.0 ppb (20) N/A N/A N/A N/A N/A 9.0 μg/m3 (38) 38.0
 
Jan. 17, 2020, 11 p.m. 19.5 ppb (18) 2.6 ppb (2) N/A 17.0 ppb (16) N/A N/A N/A N/A N/A 6.0 μg/m3 (25) 25.0
 
Jan. 17, 2020, 10 p.m. 21.6 ppb (20) 5.3 ppb (5) N/A 16.0 ppb (15) N/A N/A N/A N/A N/A 3.0 μg/m3 (12) 20.0
 
Jan. 17, 2020, 9 p.m. 13.4 ppb (12) 2.4 ppb (2) N/A 11.0 ppb (10) N/A N/A N/A N/A N/A 2.0 μg/m3 (8) 12.0
 
Jan. 17, 2020, 8 p.m. 40.7 ppb (38) 18.3 ppb (17) N/A 22.0 ppb (20) N/A N/A N/A N/A N/A 6.0 μg/m3 (25) 38.0
 
Jan. 17, 2020, 7 p.m. 65.6 ppb (62) 35.4 ppb (33) N/A 30.0 ppb (28) N/A N/A N/A N/A N/A 6.0 μg/m3 (25) 62.0
 
Jan. 17, 2020, 6 p.m. 71.2 ppb (68) 43.9 ppb (41) N/A 27.0 ppb (25) N/A N/A N/A N/A N/A 6.0 μg/m3 (25) 68.0
 
Jan. 17, 2020, 5 p.m. 60.5 ppb (57) 36.4 ppb (34) N/A 24.0 ppb (22) N/A N/A N/A N/A N/A 10.0 μg/m3 (42) 57.0
 
Jan. 17, 2020, 4 p.m. 89.0 ppb (87) 58.5 ppb (55) N/A 31.0 ppb (29) N/A N/A N/A N/A N/A 10.0 μg/m3 (42) 87.0
 
Jan. 17, 2020, 3 p.m. 78.2 ppb (76) 47.6 ppb (44) N/A 31.0 ppb (29) N/A N/A N/A N/A N/A 1.0 μg/m3 (4) 76.0
 
Jan. 17, 2020, 2 p.m. 39.5 ppb (37) 15.0 ppb (14) N/A 24.0 ppb (22) N/A N/A N/A N/A N/A 1.0 μg/m3 (4) 37.0
 
Jan. 17, 2020, 1 p.m. 53.5 ppb (50) 28.1 ppb (26) N/A 25.0 ppb (23) N/A N/A N/A N/A N/A 4.0 μg/m3 (17) 50.0
 
Jan. 17, 2020, noon 42.0 ppb (39) 18.8 ppb (17) N/A 23.0 ppb (21) N/A N/A N/A N/A N/A 6.0 μg/m3 (25) 39.0
 
Jan. 17, 2020, 11 a.m. 38.8 ppb (36) 17.3 ppb (16) N/A 22.0 ppb (20) N/A N/A N/A N/A N/A 7.0 μg/m3 (29) 36.0
 
Jan. 17, 2020, 10 a.m. 36.3 ppb (34) 18.0 ppb (17) N/A 18.0 ppb (17) N/A N/A N/A N/A N/A 7.0 μg/m3 (29) 34.0
 
Jan. 17, 2020, 9 a.m. 30.1 ppb (28) 9.3 ppb (9) N/A 21.0 ppb (19) N/A N/A N/A N/A N/A 6.0 μg/m3 (25) 28.0
 
Jan. 17, 2020, 8 a.m. 47.1 ppb (44) 22.9 ppb (21) N/A 24.0 ppb (22) N/A N/A N/A N/A N/A 7.0 μg/m3 (29) 44.0
 
Jan. 17, 2020, 7 a.m. 30.2 ppb (28) 10.9 ppb (10) N/A 19.0 ppb (18) N/A N/A N/A N/A N/A 6.0 μg/m3 (25) 28.0
 
Jan. 17, 2020, 6 a.m. 22.0 ppb (20) 7.1 ppb (7) N/A 15.0 ppb (14) N/A N/A N/A N/A N/A 8.0 μg/m3 (33) 33.0
 
Jan. 17, 2020, 5 a.m. 32.8 ppb (30) 12.3 ppb (11) N/A 20.0 ppb (19) N/A N/A N/A N/A N/A 7.0 μg/m3 (29) 30.0
 
Jan. 17, 2020, 4 a.m. 22.1 ppb (20) 5.3 ppb (5) N/A 17.0 ppb (16) N/A N/A N/A N/A N/A 4.0 μg/m3 (17) 20.0
 
Jan. 17, 2020, 3 a.m. 19.0 ppb (18) 5.3 ppb (5) N/A 14.0 ppb (13) N/A N/A N/A N/A N/A 5.0 μg/m3 (21) 21.0
 
Jan. 17, 2020, 2 a.m. 39.1 ppb (36) 15.8 ppb (15) N/A 23.0 ppb (21) N/A N/A N/A N/A N/A 8.0 μg/m3 (33) 36.0
 
Jan. 17, 2020, 1 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, 2020, midnight 53.7 ppb (50) 27.7 ppb (26) N/A 26.0 ppb (24) N/A N/A N/A N/A N/A 6.0 μg/m3 (25) 50.0
 
Jan. 16, 2020, 11 p.m. 50.9 ppb (47) 25.4 ppb (24) N/A 25.0 ppb (23) N/A N/A N/A N/A N/A 6.0 μg/m3 (25) 47.0
 
Jan. 16, 2020, 10 p.m. 42.3 ppb (39) 23.8 ppb (22) N/A 18.0 ppb (17) N/A N/A N/A N/A N/A 5.0 μg/m3 (21) 39.0
 
Jan. 16, 2020, 9 p.m. 36.8 ppb (34) 21.2 ppb (20) N/A 16.0 ppb (15) N/A N/A N/A N/A N/A 5.0 μg/m3 (21) 34.0
 
Jan. 16, 2020, 8 p.m. 37.3 ppb (35) 21.1 ppb (20) N/A 16.0 ppb (15) N/A N/A N/A N/A N/A 5.0 μg/m3 (21) 35.0
 
Jan. 16, 2020, 7 p.m. 29.7 ppb (28) 14.8 ppb (14) N/A 15.0 ppb (14) N/A N/A N/A N/A N/A 5.0 μg/m3 (21) 28.0
 
Jan. 16, 2020, 6 p.m. 45.0 ppb (42) 24.4 ppb (23) N/A 21.0 ppb (19) N/A N/A N/A N/A N/A 6.0 μg/m3 (25) 42.0
 
Jan. 16, 2020, 5 p.m. 63.8 ppb (60) 35.5 ppb (33) N/A 28.0 ppb (26) N/A N/A N/A N/A N/A 7.0 μg/m3 (29) 60.0
 
Jan. 16, 2020, 4 p.m. 52.0 ppb (48) 25.3 ppb (23) N/A 27.0 ppb (25) N/A N/A N/A N/A N/A 5.0 μg/m3 (21) 48.0
 
Jan. 16, 2020, 3 p.m. 76.6 ppb (74) 42.7 ppb (40) N/A 34.0 ppb (31) N/A N/A N/A N/A N/A 7.0 μg/m3 (29) 74.0
 
Jan. 16, 2020, 2 p.m. 46.9 ppb (43) 22.1 ppb (20) N/A 25.0 ppb (23) N/A N/A N/A N/A N/A 3.0 μg/m3 (12) 43.0
 
Jan. 16, 2020, 1 p.m. 42.3 ppb (39) 19.6 ppb (18) N/A 23.0 ppb (21) N/A N/A N/A N/A N/A 5.0 μg/m3 (21) 39.0
 
Jan. 16, 2020, noon 36.0 ppb (33) 13.6 ppb (13) N/A 22.0 ppb (20) N/A N/A N/A N/A N/A 2.0 μg/m3 (8) 33.0
 
Jan. 16, 2020, 11 a.m. 31.9 ppb (30) 9.2 ppb (9) N/A 23.0 ppb (21) N/A N/A N/A N/A N/A 0.0 μg/m3 (0) 30.0
 
Jan. 16, 2020, 10 a.m. 7.9 ppb (7) 0.4 ppb (0) N/A 7.0 ppb (6) N/A N/A N/A N/A N/A 2.0 μg/m3 (8) 8.0
 
Jan. 16, 2020, 9 a.m. 5.1 ppb (5) 0.2 ppb (0) N/A 5.0 ppb (5) N/A N/A N/A N/A N/A 4.0 μg/m3 (17) 17.0
 
Jan. 16, 2020, 8 a.m. 6.2 ppb (6) 0.8 ppb (1) N/A 5.0 ppb (5) N/A N/A N/A N/A N/A 6.0 μg/m3 (25) 25.0
 
Jan. 16, 2020, 7 a.m. 6.5 ppb (6) 0.7 ppb (1) N/A 6.0 ppb (6) N/A N/A N/A N/A N/A -1.0 μg/m3 (0) 6.0