AQSQID: 530530024

Site Name: Tacoma-S 36th St

Location: Tacoma (I 5), WA

Reporting: True, Located: True

Current AQI: 21.0

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
July 17, 2019, 7 p.m. 22.6 ppb (21) 15.4 ppb (14) N/A 7.0 ppb (6) N/A N/A N/A N/A N/A 4.0 μg/m3 (17) 21.0
 
July 17, 2019, 6 p.m. 26.5 ppb (25) 16.7 ppb (15) N/A 10.0 ppb (9) N/A N/A N/A N/A N/A 4.0 μg/m3 (17) 25.0
 
July 17, 2019, 5 p.m. 25.4 ppb (24) 15.4 ppb (14) N/A 10.0 ppb (9) N/A N/A N/A N/A N/A 4.0 μg/m3 (17) 24.0
 
July 17, 2019, 4 p.m. 28.1 ppb (26) 16.6 ppb (15) N/A 11.0 ppb (10) N/A N/A N/A N/A N/A 3.0 μg/m3 (12) 26.0
 
July 17, 2019, 3 p.m. 24.7 ppb (23) 14.6 ppb (14) N/A 10.0 ppb (9) N/A N/A N/A N/A N/A 3.0 μg/m3 (12) 23.0
 
July 17, 2019, 2 p.m. 26.8 ppb (25) 16.0 ppb (15) N/A 11.0 ppb (10) N/A N/A N/A N/A N/A 5.0 μg/m3 (21) 25.0
 
July 17, 2019, 1 p.m. 30.2 ppb (28) 18.0 ppb (17) N/A 12.0 ppb (11) N/A N/A N/A N/A N/A 2.0 μg/m3 (8) 28.0
 
July 17, 2019, noon 25.2 ppb (23) 15.2 ppb (14) N/A 10.0 ppb (9) N/A N/A N/A N/A N/A 3.0 μg/m3 (12) 23.0
 
July 17, 2019, 11 a.m. 15.9 ppb (15) 9.6 ppb (9) N/A 6.0 ppb (6) N/A N/A N/A N/A N/A 4.0 μg/m3 (17) 17.0
 
July 17, 2019, 10 a.m. 11.5 ppb (11) 5.7 ppb (5) N/A 6.0 ppb (6) N/A N/A N/A N/A N/A 3.0 μg/m3 (12) 12.0
 
July 17, 2019, 9 a.m. 10.0 ppb (9) 4.1 ppb (4) N/A 6.0 ppb (6) N/A N/A N/A N/A N/A 1.0 μg/m3 (4) 9.0
 
July 17, 2019, 8 a.m. 10.5 ppb (10) 5.2 ppb (5) N/A 5.0 ppb (5) N/A N/A N/A N/A N/A 1.0 μg/m3 (4) 10.0
 
July 17, 2019, 7 a.m. 10.8 ppb (10) 6.2 ppb (6) N/A 5.0 ppb (5) N/A N/A N/A N/A N/A N/A 10.0
 
July 17, 2019, 6 a.m. 10.1 ppb (9) 5.5 ppb (5) N/A 5.0 ppb (5) N/A N/A N/A N/A N/A N/A 9.0
 
July 17, 2019, 5 a.m. 12.9 ppb (12) 7.7 ppb (7) N/A 5.0 ppb (5) N/A N/A N/A N/A N/A 1.0 μg/m3 (4) 12.0
 
July 17, 2019, 4 a.m. 18.3 ppb (17) 11.2 ppb (10) N/A 7.0 ppb (6) N/A N/A N/A N/A N/A 4.0 μg/m3 (17) 17.0
 
July 17, 2019, 3 a.m. 19.8 ppb (18) 13.1 ppb (12) N/A 7.0 ppb (6) N/A N/A N/A N/A N/A 4.0 μg/m3 (17) 18.0
 
July 17, 2019, 2 a.m. 19.0 ppb (18) 13.6 ppb (13) N/A 5.0 ppb (5) N/A N/A N/A N/A N/A 1.0 μg/m3 (4) 18.0
 
July 17, 2019, 1 a.m. 19.9 ppb (18) 12.9 ppb (12) N/A 7.0 ppb (6) N/A N/A N/A N/A N/A 2.0 μg/m3 (8) 18.0
 
July 17, 2019, midnight 23.3 ppb (22) 13.9 ppb (13) N/A 9.0 ppb (8) N/A N/A N/A N/A N/A 4.0 μg/m3 (17) 22.0
 
July 16, 2019, 11 p.m. 26.3 ppb (24) 15.6 ppb (14) N/A 11.0 ppb (10) N/A N/A N/A N/A N/A -1.0 μg/m3 (0) 24.0
 
July 16, 2019, 10 p.m. 22.2 ppb (21) 13.5 ppb (12) N/A 9.0 ppb (8) N/A N/A N/A N/A N/A 0.0 μg/m3 (0) 21.0
 
July 16, 2019, 9 p.m. 23.6 ppb (22) 15.1 ppb (14) N/A 9.0 ppb (8) N/A N/A N/A N/A N/A 1.0 μg/m3 (4) 22.0
 
July 16, 2019, 8 p.m. 14.1 ppb (13) 8.6 ppb (8) N/A 5.0 ppb (5) N/A N/A N/A N/A N/A 1.0 μg/m3 (4) 13.0
 
July 16, 2019, 7 p.m. 30.8 ppb (29) 21.3 ppb (20) N/A 10.0 ppb (9) N/A N/A N/A N/A N/A 1.0 μg/m3 (4) 29.0
 
July 16, 2019, 6 p.m. 33.3 ppb (31) 24.1 ppb (22) N/A 9.0 ppb (8) N/A N/A N/A N/A N/A 4.0 μg/m3 (17) 31.0
 
July 16, 2019, 5 p.m. 28.9 ppb (27) 20.0 ppb (19) N/A 9.0 ppb (8) N/A N/A N/A N/A N/A 7.0 μg/m3 (29) 29.0
 
July 16, 2019, 4 p.m. 39.2 ppb (36) 28.4 ppb (26) N/A 11.0 ppb (10) N/A N/A N/A N/A N/A 7.0 μg/m3 (29) 36.0
 
July 16, 2019, 3 p.m. 35.6 ppb (33) 26.0 ppb (24) N/A 10.0 ppb (9) N/A N/A N/A N/A N/A 5.0 μg/m3 (21) 33.0
 
July 16, 2019, 2 p.m. 43.4 ppb (40) 32.9 ppb (30) N/A 10.0 ppb (9) N/A N/A N/A N/A N/A 5.0 μg/m3 (21) 40.0
 
July 16, 2019, 1 p.m. 45.4 ppb (42) 35.4 ppb (33) N/A 10.0 ppb (9) N/A N/A N/A N/A N/A 5.0 μg/m3 (21) 42.0
 
July 16, 2019, noon 43.3 ppb (40) 32.9 ppb (30) N/A 10.0 ppb (9) N/A N/A N/A N/A N/A 5.0 μg/m3 (21) 40.0
 
July 16, 2019, 11 a.m. 30.7 ppb (28) 19.6 ppb (18) N/A 11.0 ppb (10) N/A N/A N/A N/A N/A 5.0 μg/m3 (21) 28.0
 
July 16, 2019, 10 a.m. 19.5 ppb (18) 10.5 ppb (10) N/A 9.0 ppb (8) N/A N/A N/A N/A N/A 5.0 μg/m3 (21) 21.0
 
July 16, 2019, 9 a.m. 19.9 ppb (18) 12.2 ppb (11) N/A 8.0 ppb (7) N/A N/A N/A N/A N/A 7.0 μg/m3 (29) 29.0
 
July 16, 2019, 8 a.m. 16.1 ppb (15) 9.7 ppb (9) N/A 6.0 ppb (6) N/A N/A N/A N/A N/A 12.0 μg/m3 (50) 50.0
 
July 16, 2019, 7 a.m. 17.1 ppb (16) 9.9 ppb (9) N/A 7.0 ppb (6) N/A N/A N/A N/A N/A 3.0 μg/m3 (12) 16.0
 
July 16, 2019, 6 a.m. 17.8 ppb (16) 9.0 ppb (8) N/A 9.0 ppb (8) N/A N/A N/A N/A N/A 4.0 μg/m3 (17) 17.0
 
July 16, 2019, 5 a.m. 26.7 ppb (25) 15.0 ppb (14) N/A 12.0 ppb (11) N/A N/A N/A N/A N/A 5.0 μg/m3 (21) 25.0
 
July 16, 2019, 4 a.m. 28.4 ppb (26) 15.2 ppb (14) N/A 13.0 ppb (12) N/A N/A N/A N/A N/A 8.0 μg/m3 (33) 33.0
 
July 16, 2019, 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
 
July 16, 2019, 2 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
 
July 16, 2019, 1 a.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
 
July 16, 2019, midnight 26.9 ppb (25) 15.1 ppb (14) N/A 12.0 ppb (11) N/A N/A N/A N/A N/A 4.0 μg/m3 (17) 25.0
 
July 15, 2019, 11 p.m. 27.8 ppb (26) 16.2 ppb (15) N/A 12.0 ppb (11) N/A N/A N/A N/A N/A 6.0 μg/m3 (25) 26.0
 
July 15, 2019, 10 p.m. 19.7 ppb (18) 9.7 ppb (9) N/A 10.0 ppb (9) N/A N/A N/A N/A N/A 6.0 μg/m3 (25) 25.0
 
July 15, 2019, 9 p.m. 30.2 ppb (28) 17.2 ppb (16) N/A 13.0 ppb (12) N/A N/A N/A N/A N/A 4.0 μg/m3 (17) 28.0
 
July 15, 2019, 8 p.m. 39.8 ppb (37) 24.4 ppb (23) N/A 15.0 ppb (14) N/A N/A N/A N/A N/A 2.0 μg/m3 (8) 37.0
 
July 15, 2019, 7 p.m. 29.7 ppb (28) 19.4 ppb (18) N/A 10.0 ppb (9) N/A N/A N/A N/A N/A 0.0 μg/m3 (0) 28.0
 
July 15, 2019, 6 p.m. 36.9 ppb (34) 22.4 ppb (21) N/A 14.0 ppb (13) N/A N/A N/A N/A N/A 3.0 μg/m3 (12) 34.0
 
July 15, 2019, 5 p.m. 32.2 ppb (30) 20.2 ppb (19) N/A 12.0 ppb (11) N/A N/A N/A N/A N/A 6.0 μg/m3 (25) 30.0
 
July 15, 2019, 4 p.m. 31.0 ppb (29) 19.4 ppb (18) N/A 12.0 ppb (11) N/A N/A N/A N/A N/A 8.0 μg/m3 (33) 33.0
 
July 15, 2019, 3 p.m. 43.7 ppb (40) 30.6 ppb (28) N/A 13.0 ppb (12) N/A N/A N/A N/A N/A 6.0 μg/m3 (25) 40.0
 
July 15, 2019, 2 p.m. 46.5 ppb (43) 30.1 ppb (28) N/A 16.0 ppb (15) N/A N/A N/A N/A N/A 8.0 μg/m3 (33) 43.0
 
July 15, 2019, 1 p.m. 48.7 ppb (45) 30.5 ppb (28) N/A 18.0 ppb (17) N/A N/A N/A N/A N/A 10.0 μg/m3 (42) 45.0
 
July 15, 2019, noon 39.9 ppb (37) 20.6 ppb (19) N/A 19.0 ppb (18) N/A N/A N/A N/A N/A 4.0 μg/m3 (17) 37.0
 
July 15, 2019, 11 a.m. 31.9 ppb (30) 15.5 ppb (14) N/A 16.0 ppb (15) N/A N/A N/A N/A N/A 3.0 μg/m3 (12) 30.0
 
July 15, 2019, 10 a.m. 14.7 ppb (14) 4.2 ppb (4) N/A 10.0 ppb (9) N/A N/A N/A N/A N/A 1.0 μg/m3 (4) 14.0
 
July 15, 2019, 9 a.m. 11.8 ppb (11) 2.6 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
 
July 15, 2019, 8 a.m. 15.5 ppb (14) 4.2 ppb (4) N/A 11.0 ppb (10) N/A N/A N/A N/A N/A 5.0 μg/m3 (21) 21.0
 
July 15, 2019, 7 a.m. 17.3 ppb (16) 5.3 ppb (5) N/A 12.0 ppb (11) N/A N/A N/A N/A N/A 3.0 μg/m3 (12) 16.0
 
July 15, 2019, 6 a.m. 11.9 ppb (11) 2.3 ppb (2) N/A 10.0 ppb (9) N/A N/A N/A N/A N/A 4.0 μg/m3 (17) 17.0
 
July 15, 2019, 5 a.m. 17.9 ppb (17) 3.7 ppb (3) N/A 14.0 ppb (13) N/A N/A N/A N/A N/A 5.0 μg/m3 (21) 21.0
 
July 15, 2019, 4 a.m. 18.4 ppb (17) 4.2 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
 
July 15, 2019, 3 a.m. 13.7 ppb (13) 2.3 ppb (2) N/A 11.0 ppb (10) N/A N/A N/A N/A N/A 3.0 μg/m3 (12) 13.0
 
July 15, 2019, 2 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
 
July 15, 2019, 1 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
 
July 15, 2019, midnight 20.2 ppb (19) 11.6 ppb (11) N/A 9.0 ppb (8) N/A N/A N/A N/A N/A 4.0 μg/m3 (17) 19.0
 
July 14, 2019, 11 p.m. 13.2 ppb (12) 6.8 ppb (6) N/A 6.0 ppb (6) N/A N/A N/A N/A N/A 6.0 μg/m3 (25) 25.0
 
July 14, 2019, 10 p.m. 19.2 ppb (18) 10.7 ppb (10) N/A 9.0 ppb (8) N/A N/A N/A N/A N/A 3.0 μg/m3 (12) 18.0
 
July 14, 2019, 9 p.m. 18.7 ppb (17) 10.9 ppb (10) N/A 8.0 ppb (7) N/A N/A N/A N/A N/A 4.0 μg/m3 (17) 17.0
 
July 14, 2019, 8 p.m. 12.1 ppb (11) 7.3 ppb (7) N/A 5.0 ppb (5) N/A N/A N/A N/A N/A 4.0 μg/m3 (17) 17.0
 
July 14, 2019, 7 p.m. 15.8 ppb (15) 10.3 ppb (10) N/A 5.0 ppb (5) N/A N/A N/A N/A N/A 4.0 μg/m3 (17) 17.0
 
July 14, 2019, 6 p.m. 13.9 ppb (13) 8.7 ppb (8) N/A 5.0 ppb (5) N/A N/A N/A N/A N/A 5.0 μg/m3 (21) 21.0
 
July 14, 2019, 5 p.m. 20.5 ppb (19) 13.1 ppb (12) N/A 7.0 ppb (6) N/A N/A N/A N/A N/A 1.0 μg/m3 (4) 19.0
 
July 14, 2019, 4 p.m. 17.5 ppb (16) 10.8 ppb (10) N/A 7.0 ppb (6) N/A N/A N/A N/A N/A 3.0 μg/m3 (12) 16.0
 
July 14, 2019, 3 p.m. 15.4 ppb (14) 9.2 ppb (9) N/A 6.0 ppb (6) N/A N/A N/A N/A N/A 5.0 μg/m3 (21) 21.0
 
July 14, 2019, 2 p.m. 9.4 ppb (9) 3.9 ppb (4) N/A 5.0 ppb (5) N/A N/A N/A N/A N/A 3.0 μg/m3 (12) 12.0
 
July 14, 2019, 1 p.m. 11.1 ppb (10) 4.9 ppb (5) N/A 6.0 ppb (6) N/A N/A N/A N/A N/A 4.0 μg/m3 (17) 17.0
 
July 14, 2019, noon 12.6 ppb (12) 4.6 ppb (4) N/A 8.0 ppb (7) N/A N/A N/A N/A N/A 5.0 μg/m3 (21) 21.0
 
July 14, 2019, 11 a.m. 9.5 ppb (9) 2.8 ppb (3) N/A 7.0 ppb (6) N/A N/A N/A N/A N/A 6.0 μg/m3 (25) 25.0
 
July 14, 2019, 10 a.m. 4.2 ppb (4) 0.2 ppb (0) N/A 4.0 ppb (4) N/A N/A N/A N/A N/A 5.0 μg/m3 (21) 21.0
 
July 14, 2019, 9 a.m. 7.0 ppb (6) 1.3 ppb (1) N/A 6.0 ppb (6) N/A N/A N/A N/A N/A 2.0 μg/m3 (8) 8.0
 
July 14, 2019, 8 a.m. 15.0 ppb (14) 8.2 ppb (8) N/A 7.0 ppb (6) N/A N/A N/A N/A N/A 4.0 μg/m3 (17) 17.0
 
July 14, 2019, 7 a.m. 13.6 ppb (13) 7.5 ppb (7) N/A 6.0 ppb (6) N/A N/A N/A N/A N/A 2.0 μg/m3 (8) 13.0
 
July 14, 2019, 6 a.m. 14.8 ppb (14) 7.6 ppb (7) N/A 7.0 ppb (6) N/A N/A N/A N/A N/A 3.0 μg/m3 (12) 14.0
 
July 14, 2019, 5 a.m. 14.5 ppb (13) 9.1 ppb (8) N/A 5.0 ppb (5) N/A N/A N/A N/A N/A 5.0 μg/m3 (21) 21.0
 
July 14, 2019, 4 a.m. 15.0 ppb (14) 9.8 ppb (9) N/A 5.0 ppb (5) N/A N/A N/A N/A N/A 4.0 μg/m3 (17) 17.0
 
July 14, 2019, 3 a.m. 16.0 ppb (15) 10.1 ppb (9) N/A 6.0 ppb (6) N/A N/A N/A N/A N/A 2.0 μg/m3 (8) 15.0
 
July 14, 2019, 2 a.m. 17.1 ppb (16) 10.5 ppb (10) N/A 7.0 ppb (6) N/A N/A N/A N/A N/A 0.0 μg/m3 (0) 16.0
 
July 14, 2019, 1 a.m. 19.6 ppb (18) 13.7 ppb (13) N/A 6.0 ppb (6) N/A N/A N/A N/A N/A 0.0 μg/m3 (0) 18.0
 
July 14, 2019, midnight 18.8 ppb (17) 12.5 ppb (12) N/A 6.0 ppb (6) N/A N/A N/A N/A N/A 0.0 μg/m3 (0) 17.0
 
July 13, 2019, 11 p.m. 19.8 ppb (18) 13.4 ppb (12) N/A 6.0 ppb (6) N/A N/A N/A N/A N/A 3.0 μg/m3 (12) 18.0
 
July 13, 2019, 10 p.m. 20.2 ppb (19) 14.0 ppb (13) N/A 6.0 ppb (6) N/A N/A N/A N/A N/A 5.0 μg/m3 (21) 21.0
 
July 13, 2019, 9 p.m. 15.9 ppb (15) 11.3 ppb (10) N/A 5.0 ppb (5) N/A N/A N/A N/A N/A 4.0 μg/m3 (17) 17.0
 
July 13, 2019, 8 p.m. 19.2 ppb (18) 12.5 ppb (12) N/A 7.0 ppb (6) N/A N/A N/A N/A N/A 3.0 μg/m3 (12) 18.0
 
July 13, 2019, 7 p.m. 18.0 ppb (17) 11.9 ppb (11) N/A 6.0 ppb (6) N/A N/A N/A N/A N/A 4.0 μg/m3 (17) 17.0
 
July 13, 2019, 6 p.m. 21.9 ppb (20) 14.7 ppb (14) N/A 7.0 ppb (6) N/A N/A N/A N/A N/A 7.0 μg/m3 (29) 29.0
 
July 13, 2019, 5 p.m. 23.3 ppb (22) 17.0 ppb (16) N/A 6.0 ppb (6) N/A N/A N/A N/A N/A 4.0 μg/m3 (17) 22.0
 
July 13, 2019, 4 p.m. 21.6 ppb (20) 15.1 ppb (14) N/A 6.0 ppb (6) N/A N/A N/A N/A N/A 3.0 μg/m3 (12) 20.0
 
July 13, 2019, 3 p.m. 20.1 ppb (19) 14.9 ppb (14) N/A 5.0 ppb (5) N/A N/A N/A N/A N/A 5.0 μg/m3 (21) 21.0
 
July 13, 2019, 2 p.m. 21.8 ppb (20) 16.3 ppb (15) N/A 5.0 ppb (5) N/A N/A N/A N/A N/A 3.0 μg/m3 (12) 20.0
 
July 13, 2019, 1 p.m. 21.0 ppb (19) 14.8 ppb (14) N/A 6.0 ppb (6) N/A N/A N/A N/A N/A 6.0 μg/m3 (25) 25.0
 
July 13, 2019, noon 16.6 ppb (15) 11.8 ppb (11) N/A 5.0 ppb (5) N/A N/A N/A N/A N/A 8.0 μg/m3 (33) 33.0
 
July 13, 2019, 11 a.m. 12.8 ppb (12) 8.1 ppb (8) N/A 5.0 ppb (5) N/A N/A N/A N/A N/A 4.0 μg/m3 (17) 17.0
 
July 13, 2019, 10 a.m. 16.5 ppb (15) 8.4 ppb (8) N/A 8.0 ppb (7) N/A N/A N/A N/A N/A 4.0 μg/m3 (17) 17.0
 
July 13, 2019, 9 a.m. 30.1 ppb (28) 17.1 ppb (16) N/A 13.0 ppb (12) N/A N/A N/A N/A N/A 6.0 μg/m3 (25) 28.0
 
July 13, 2019, 8 a.m. 17.7 ppb (16) 8.3 ppb (8) N/A 9.0 ppb (8) N/A N/A N/A N/A N/A 5.0 μg/m3 (21) 21.0
 
July 13, 2019, 7 a.m. 21.5 ppb (20) 8.8 ppb (8) N/A 13.0 ppb (12) N/A N/A N/A N/A N/A 6.0 μg/m3 (25) 25.0
 
July 13, 2019, 6 a.m. 25.5 ppb (24) 10.6 ppb (10) N/A 15.0 ppb (14) N/A N/A N/A N/A N/A 4.0 μg/m3 (17) 24.0
 
July 13, 2019, 5 a.m. 28.5 ppb (26) 12.4 ppb (11) N/A 16.0 ppb (15) N/A N/A N/A N/A N/A 4.0 μg/m3 (17) 26.0
 
July 13, 2019, 4 a.m. 22.7 ppb (21) 6.1 ppb (6) N/A 17.0 ppb (16) N/A N/A N/A N/A N/A 6.0 μg/m3 (25) 25.0
 
July 13, 2019, 3 a.m. 22.3 ppb (21) 7.4 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
 
July 13, 2019, 2 a.m. 11.2 ppb (10) 4.4 ppb (4) N/A 7.0 ppb (6) N/A N/A N/A N/A N/A 1.0 μg/m3 (4) 10.0
 
July 13, 2019, 1 a.m. 20.7 ppb (19) 10.3 ppb (10) N/A 10.0 ppb (9) N/A N/A N/A N/A N/A 0.0 μg/m3 (0) 19.0
 
July 13, 2019, midnight 10.5 ppb (10) 5.0 ppb (5) N/A 6.0 ppb (6) N/A N/A N/A N/A N/A -1.0 μg/m3 (0) 10.0
 
July 12, 2019, 11 p.m. 10.6 ppb (10) 5.9 ppb (5) N/A 5.0 ppb (5) N/A N/A N/A N/A N/A 3.0 μg/m3 (12) 12.0
 
July 12, 2019, 10 p.m. 20.4 ppb (19) 11.3 ppb (10) N/A 9.0 ppb (8) N/A N/A N/A N/A N/A 6.0 μg/m3 (25) 25.0
 
July 12, 2019, 9 p.m. 15.3 ppb (14) 8.4 ppb (8) N/A 7.0 ppb (6) N/A N/A N/A N/A N/A 4.0 μg/m3 (17) 17.0
 
July 12, 2019, 8 p.m. 21.5 ppb (20) 12.1 ppb (11) N/A 9.0 ppb (8) N/A N/A N/A N/A N/A 2.0 μg/m3 (8) 20.0
 
July 12, 2019, 7 p.m. 30.8 ppb (29) 19.1 ppb (18) N/A 12.0 ppb (11) N/A N/A N/A N/A N/A -1.0 μg/m3 (0) 29.0
 
July 12, 2019, 6 p.m. 25.5 ppb (24) 15.0 ppb (14) N/A 11.0 ppb (10) N/A N/A N/A N/A N/A 5.0 μg/m3 (21) 24.0
 
July 12, 2019, 5 p.m. 31.2 ppb (29) 17.9 ppb (17) N/A 13.0 ppb (12) N/A N/A N/A N/A N/A 10.0 μg/m3 (42) 42.0
 
July 12, 2019, 4 p.m. 44.6 ppb (41) 28.9 ppb (27) N/A 16.0 ppb (15) N/A N/A N/A N/A N/A 11.0 μg/m3 (46) 46.0
 
July 12, 2019, 3 p.m. 45.2 ppb (42) 30.3 ppb (28) N/A 15.0 ppb (14) N/A N/A N/A N/A N/A 10.0 μg/m3 (42) 42.0
 
July 12, 2019, 2 p.m. 58.9 ppb (55) 41.4 ppb (38) N/A 17.0 ppb (16) N/A N/A N/A N/A N/A 7.0 μg/m3 (29) 55.0
 
July 12, 2019, 1 p.m. 61.2 ppb (58) 43.7 ppb (40) N/A 17.0 ppb (16) N/A N/A N/A N/A N/A 7.0 μg/m3 (29) 58.0
 
July 12, 2019, noon 36.9 ppb (34) 24.3 ppb (23) N/A 13.0 ppb (12) N/A N/A N/A N/A N/A 8.0 μg/m3 (33) 34.0
 
July 12, 2019, 11 a.m. 35.4 ppb (33) 25.8 ppb (24) N/A 10.0 ppb (9) N/A N/A N/A N/A N/A 7.0 μg/m3 (29) 33.0
 
July 12, 2019, 10 a.m. 24.8 ppb (23) 16.3 ppb (15) N/A 9.0 ppb (8) N/A N/A N/A N/A N/A 2.0 μg/m3 (8) 23.0
 
July 12, 2019, 9 a.m. 22.4 ppb (21) 12.6 ppb (12) N/A 10.0 ppb (9) N/A N/A N/A N/A N/A 4.0 μg/m3 (17) 21.0
 
July 12, 2019, 8 a.m. 42.3 ppb (39) 25.4 ppb (24) N/A 17.0 ppb (16) N/A N/A N/A N/A N/A 5.0 μg/m3 (21) 39.0
 
July 12, 2019, 7 a.m. 44.2 ppb (41) 23.1 ppb (21) N/A 21.0 ppb (19) N/A N/A N/A N/A N/A 4.0 μg/m3 (17) 41.0
 
July 12, 2019, 6 a.m. 26.9 ppb (25) 11.0 ppb (10) N/A 16.0 ppb (15) N/A N/A N/A N/A N/A 1.0 μg/m3 (4) 25.0
 
July 12, 2019, 5 a.m. 21.6 ppb (20) 7.8 ppb (7) N/A 14.0 ppb (13) N/A N/A N/A N/A N/A 3.0 μg/m3 (12) 20.0
 
July 12, 2019, 4 a.m. 28.6 ppb (26) 15.3 ppb (14) N/A 13.0 ppb (12) N/A N/A N/A N/A N/A 4.0 μg/m3 (17) 26.0
 
July 12, 2019, 3 a.m. 29.1 ppb (27) 16.5 ppb (15) N/A 13.0 ppb (12) N/A N/A N/A N/A N/A 2.0 μg/m3 (8) 27.0
 
July 12, 2019, 2 a.m. 27.6 ppb (26) 17.1 ppb (16) N/A 11.0 ppb (10) N/A N/A N/A N/A N/A 3.0 μg/m3 (12) 26.0
 
July 12, 2019, 1 a.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
 
July 12, 2019, midnight 23.3 ppb (22) 14.5 ppb (13) N/A 9.0 ppb (8) N/A N/A N/A N/A N/A 2.0 μg/m3 (8) 22.0
 
July 11, 2019, 11 p.m. 28.1 ppb (26) 18.0 ppb (17) N/A 10.0 ppb (9) N/A N/A N/A N/A N/A 4.0 μg/m3 (17) 26.0
 
July 11, 2019, 10 p.m. 29.5 ppb (27) 20.0 ppb (19) N/A 10.0 ppb (9) N/A N/A N/A N/A N/A 5.0 μg/m3 (21) 27.0
 
July 11, 2019, 9 p.m. 27.1 ppb (25) 17.3 ppb (16) N/A 10.0 ppb (9) N/A N/A N/A N/A N/A 3.0 μg/m3 (12) 25.0
 
July 11, 2019, 8 p.m. 31.9 ppb (30) 21.4 ppb (20) N/A 11.0 ppb (10) N/A N/A N/A N/A N/A 3.0 μg/m3 (12) 30.0
 
July 11, 2019, 7 p.m. 35.7 ppb (33) 24.5 ppb (23) N/A 11.0 ppb (10) N/A N/A N/A N/A N/A 2.0 μg/m3 (8) 33.0
 
July 11, 2019, 6 p.m. 33.7 ppb (31) 23.4 ppb (22) N/A 10.0 ppb (9) N/A N/A N/A N/A N/A 3.0 μg/m3 (12) 31.0
 
July 11, 2019, 5 p.m. 37.5 ppb (35) 27.1 ppb (25) N/A 10.0 ppb (9) N/A N/A N/A N/A N/A 6.0 μg/m3 (25) 35.0
 
July 11, 2019, 4 p.m. 44.2 ppb (41) 30.8 ppb (29) N/A 13.0 ppb (12) N/A N/A N/A N/A N/A 5.0 μg/m3 (21) 41.0
 
July 11, 2019, 3 p.m. 29.0 ppb (27) 18.6 ppb (17) N/A 10.0 ppb (9) N/A N/A N/A N/A N/A 4.0 μg/m3 (17) 27.0
 
July 11, 2019, 2 p.m. 35.1 ppb (32) 24.9 ppb (23) N/A 10.0 ppb (9) N/A N/A N/A N/A N/A 4.0 μg/m3 (17) 32.0
 
July 11, 2019, 1 p.m. 7.7 ppb (7) 3.1 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
 
July 11, 2019, noon 5.9 ppb (5) 1.3 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
 
July 11, 2019, 11 a.m. 27.3 ppb (25) 18.6 ppb (17) N/A 9.0 ppb (8) N/A N/A N/A N/A N/A 2.0 μg/m3 (8) 25.0
 
July 11, 2019, 10 a.m. 22.5 ppb (21) 13.0 ppb (12) N/A 9.0 ppb (8) N/A N/A N/A N/A N/A 2.0 μg/m3 (8) 21.0
 
July 11, 2019, 9 a.m. 15.2 ppb (14) 8.2 ppb (8) N/A 7.0 ppb (6) N/A N/A N/A N/A N/A 5.0 μg/m3 (21) 21.0
 
July 11, 2019, 8 a.m. 12.2 ppb (11) 7.3 ppb (7) N/A 5.0 ppb (5) N/A N/A N/A N/A N/A 9.0 μg/m3 (38) 38.0
 
July 11, 2019, 7 a.m. 11.7 ppb (11) 7.2 ppb (7) N/A 5.0 ppb (5) N/A N/A N/A N/A N/A 3.0 μg/m3 (12) 12.0
 
July 11, 2019, 6 a.m. 16.1 ppb (15) 10.7 ppb (10) N/A 5.0 ppb (5) N/A N/A N/A N/A N/A 3.0 μg/m3 (12) 15.0
 
July 11, 2019, 5 a.m. 17.7 ppb (16) 12.0 ppb (11) N/A 6.0 ppb (6) N/A N/A N/A N/A N/A 4.0 μg/m3 (17) 17.0
 
July 11, 2019, 4 a.m. 25.1 ppb (23) 17.9 ppb (17) N/A 7.0 ppb (6) N/A N/A N/A N/A N/A 6.0 μg/m3 (25) 25.0
 
July 11, 2019, 3 a.m. 30.3 ppb (28) 21.3 ppb (20) N/A 9.0 ppb (8) N/A N/A N/A N/A N/A 4.0 μg/m3 (17) 28.0
 
July 11, 2019, 2 a.m. 30.5 ppb (28) 23.0 ppb (21) N/A 8.0 ppb (7) N/A N/A N/A N/A N/A 4.0 μg/m3 (17) 28.0
 
July 11, 2019, 1 a.m. 26.7 ppb (25) 19.3 ppb (18) N/A 7.0 ppb (6) N/A N/A N/A N/A N/A 3.0 μg/m3 (12) 25.0
 
July 11, 2019, midnight 30.6 ppb (28) 22.3 ppb (21) N/A 8.0 ppb (7) N/A N/A N/A N/A N/A 2.0 μg/m3 (8) 28.0
 
July 10, 2019, 11 p.m. 33.4 ppb (31) 25.2 ppb (23) N/A 8.0 ppb (7) N/A N/A N/A N/A N/A 2.0 μg/m3 (8) 31.0
 
July 10, 2019, 10 p.m. 30.3 ppb (28) 22.9 ppb (21) N/A 7.0 ppb (6) N/A N/A N/A N/A N/A 3.0 μg/m3 (12) 28.0
 
July 10, 2019, 9 p.m. 23.5 ppb (22) 17.7 ppb (16) N/A 6.0 ppb (6) N/A N/A N/A N/A N/A 5.0 μg/m3 (21) 22.0
 
July 10, 2019, 8 p.m. 28.4 ppb (26) 20.7 ppb (19) N/A 8.0 ppb (7) N/A N/A N/A N/A N/A 4.0 μg/m3 (17) 26.0