AQSQID: 530530024

Site Name: Tacoma-S 36th St

Location: Tacoma (I 5), WA

Reporting: True, Located: True

Current AQI: 29.0

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
Sept. 22, 2019, 7 p.m. 20.1 ppb (19) 12.8 ppb (12) N/A 7.0 ppb (6) N/A N/A N/A N/A N/A 6.0 μg/m3 (25) 25.0
 
Sept. 22, 2019, 6 p.m. 23.1 ppb (21) 14.9 ppb (14) N/A 8.0 ppb (7) N/A N/A N/A N/A N/A 7.0 μg/m3 (29) 29.0
 
Sept. 22, 2019, 5 p.m. 6.8 ppb (6) 2.7 ppb (3) N/A 4.0 ppb (4) N/A N/A N/A N/A N/A 6.0 μg/m3 (25) 25.0
 
Sept. 22, 2019, 4 p.m. 4.4 ppb (4) 1.2 ppb (1) N/A 3.0 ppb (3) N/A N/A N/A N/A N/A 4.0 μg/m3 (17) 17.0
 
Sept. 22, 2019, 3 p.m. 10.4 ppb (10) 5.1 ppb (5) N/A 5.0 ppb (5) N/A N/A N/A N/A N/A 7.0 μg/m3 (29) 29.0
 
Sept. 22, 2019, 2 p.m. 18.5 ppb (17) 10.8 ppb (10) N/A 8.0 ppb (7) N/A N/A N/A N/A N/A 7.0 μg/m3 (29) 29.0
 
Sept. 22, 2019, 1 p.m. 11.1 ppb (10) 4.5 ppb (4) N/A 7.0 ppb (6) N/A N/A N/A N/A N/A 8.0 μg/m3 (33) 33.0
 
Sept. 22, 2019, noon 9.7 ppb (9) 1.9 ppb (2) N/A 8.0 ppb (7) N/A N/A N/A N/A N/A 8.0 μg/m3 (33) 33.0
 
Sept. 22, 2019, 11 a.m. 10.7 ppb (10) 3.0 ppb (3) N/A 8.0 ppb (7) N/A N/A N/A N/A N/A 6.0 μg/m3 (25) 25.0
 
Sept. 22, 2019, 10 a.m. 11.9 ppb (11) 2.4 ppb (2) N/A 9.0 ppb (8) N/A N/A N/A N/A N/A 7.0 μg/m3 (29) 29.0
 
Sept. 22, 2019, 9 a.m. 14.8 ppb (14) 4.7 ppb (4) N/A 10.0 ppb (9) N/A N/A N/A N/A N/A 9.0 μg/m3 (38) 38.0
 
Sept. 22, 2019, 8 a.m. 11.9 ppb (11) 1.8 ppb (2) N/A 10.0 ppb (9) N/A N/A N/A N/A N/A 6.0 μg/m3 (25) 25.0
 
Sept. 22, 2019, 7 a.m. 17.7 ppb (16) 6.3 ppb (6) N/A 11.0 ppb (10) N/A N/A N/A N/A N/A 4.0 μg/m3 (17) 17.0
 
Sept. 22, 2019, 6 a.m. 26.3 ppb (24) 13.7 ppb (13) N/A 13.0 ppb (12) N/A N/A N/A N/A N/A 2.0 μg/m3 (8) 24.0
 
Sept. 22, 2019, 5 a.m. 15.7 ppb (15) 4.9 ppb (5) N/A 11.0 ppb (10) N/A N/A N/A N/A N/A 0.0 μg/m3 (0) 15.0
 
Sept. 22, 2019, 4 a.m. 21.8 ppb (20) 10.9 ppb (10) N/A 11.0 ppb (10) N/A N/A N/A N/A N/A 4.0 μg/m3 (17) 20.0
 
Sept. 22, 2019, 3 a.m. 22.6 ppb (21) 12.7 ppb (12) N/A 10.0 ppb (9) N/A N/A N/A N/A N/A 3.0 μg/m3 (12) 21.0
 
Sept. 22, 2019, 2 a.m. 23.8 ppb (22) 13.5 ppb (12) N/A 10.0 ppb (9) N/A N/A N/A N/A N/A 4.0 μg/m3 (17) 22.0
 
Sept. 22, 2019, 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
 
Sept. 22, 2019, midnight 17.3 ppb (16) 11.9 ppb (11) N/A 5.0 ppb (5) N/A N/A N/A N/A N/A 1.0 μg/m3 (4) 16.0
 
Sept. 21, 2019, 11 p.m. 17.1 ppb (16) 10.8 ppb (10) N/A 6.0 ppb (6) N/A N/A N/A N/A N/A 3.0 μg/m3 (12) 16.0
 
Sept. 21, 2019, 10 p.m. 21.2 ppb (20) 13.5 ppb (12) N/A 8.0 ppb (7) N/A N/A N/A N/A N/A 7.0 μg/m3 (29) 29.0
 
Sept. 21, 2019, 9 p.m. 21.0 ppb (19) 13.9 ppb (13) N/A 7.0 ppb (6) N/A N/A N/A N/A N/A 7.0 μg/m3 (29) 29.0
 
Sept. 21, 2019, 8 p.m. 16.0 ppb (15) 10.2 ppb (9) N/A 6.0 ppb (6) N/A N/A N/A N/A N/A 3.0 μg/m3 (12) 15.0
 
Sept. 21, 2019, 7 p.m. 16.8 ppb (16) 10.9 ppb (10) N/A 6.0 ppb (6) N/A N/A N/A N/A N/A 2.0 μg/m3 (8) 16.0
 
Sept. 21, 2019, 6 p.m. 20.4 ppb (19) 12.5 ppb (12) N/A 8.0 ppb (7) N/A N/A N/A N/A N/A 2.0 μg/m3 (8) 19.0
 
Sept. 21, 2019, 5 p.m. 24.1 ppb (22) 15.6 ppb (14) N/A 9.0 ppb (8) N/A N/A N/A N/A N/A 5.0 μg/m3 (21) 22.0
 
Sept. 21, 2019, 4 p.m. 17.7 ppb (16) 10.2 ppb (9) N/A 7.0 ppb (6) N/A N/A N/A N/A N/A 5.0 μg/m3 (21) 21.0
 
Sept. 21, 2019, 3 p.m. 23.7 ppb (22) 15.5 ppb (14) N/A 8.0 ppb (7) N/A N/A N/A N/A N/A 7.0 μg/m3 (29) 29.0
 
Sept. 21, 2019, 2 p.m. 36.8 ppb (34) 24.3 ppb (23) N/A 13.0 ppb (12) N/A N/A N/A N/A N/A 7.0 μg/m3 (29) 34.0
 
Sept. 21, 2019, 1 p.m. 17.3 ppb (16) 7.4 ppb (7) N/A 10.0 ppb (9) N/A N/A N/A N/A N/A 1.0 μg/m3 (4) 16.0
 
Sept. 21, 2019, noon 9.1 ppb (8) 2.0 ppb (2) N/A 7.0 ppb (6) N/A N/A N/A N/A N/A 3.0 μg/m3 (12) 12.0
 
Sept. 21, 2019, 11 a.m. 17.2 ppb (16) 8.9 ppb (8) N/A 8.0 ppb (7) N/A N/A N/A N/A N/A 6.0 μg/m3 (25) 25.0
 
Sept. 21, 2019, 10 a.m. 17.7 ppb (16) 7.6 ppb (7) N/A 10.0 ppb (9) N/A N/A N/A N/A N/A 7.0 μg/m3 (29) 29.0
 
Sept. 21, 2019, 9 a.m. 12.9 ppb (12) 2.5 ppb (2) N/A 10.0 ppb (9) N/A N/A N/A N/A N/A 6.0 μg/m3 (25) 25.0
 
Sept. 21, 2019, 8 a.m. 11.3 ppb (10) 5.0 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
 
Sept. 21, 2019, 7 a.m. 13.7 ppb (13) 6.5 ppb (6) N/A 7.0 ppb (6) N/A N/A N/A N/A N/A 5.0 μg/m3 (21) 21.0
 
Sept. 21, 2019, 6 a.m. 19.8 ppb (18) 11.1 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
 
Sept. 21, 2019, 5 a.m. 24.9 ppb (23) 14.1 ppb (13) N/A 11.0 ppb (10) N/A N/A N/A N/A N/A 7.0 μg/m3 (29) 29.0
 
Sept. 21, 2019, 4 a.m. 31.0 ppb (29) 8.4 ppb (8) N/A 23.0 ppb (21) N/A N/A N/A N/A N/A 13.0 μg/m3 (52) 52.0
 
Sept. 21, 2019, 3 a.m. 23.6 ppb (22) 1.2 ppb (1) N/A 22.0 ppb (20) N/A N/A N/A N/A N/A 9.0 μg/m3 (38) 38.0
 
Sept. 21, 2019, 2 a.m. 15.5 ppb (14) 2.3 ppb (2) N/A 13.0 ppb (12) N/A N/A N/A N/A N/A 8.0 μg/m3 (33) 33.0
 
Sept. 21, 2019, 1 a.m. 34.0 ppb (31) 17.1 ppb (16) N/A 17.0 ppb (16) N/A N/A N/A N/A N/A 5.0 μg/m3 (21) 31.0
 
Sept. 21, 2019, midnight 32.1 ppb (30) 17.5 ppb (16) N/A 15.0 ppb (14) N/A N/A N/A N/A N/A 5.0 μg/m3 (21) 30.0
 
Sept. 20, 2019, 11 p.m. 20.7 ppb (19) 10.8 ppb (10) N/A 10.0 ppb (9) N/A N/A N/A N/A N/A 6.0 μg/m3 (25) 25.0
 
Sept. 20, 2019, 10 p.m. 24.7 ppb (23) 14.4 ppb (13) N/A 10.0 ppb (9) N/A N/A N/A N/A N/A 4.0 μg/m3 (17) 23.0
 
Sept. 20, 2019, 9 p.m. 34.6 ppb (32) 21.6 ppb (20) N/A 13.0 ppb (12) N/A N/A N/A N/A N/A 6.0 μg/m3 (25) 32.0
 
Sept. 20, 2019, 8 p.m. 27.5 ppb (25) 17.5 ppb (16) N/A 10.0 ppb (9) N/A N/A N/A N/A N/A 7.0 μg/m3 (29) 29.0
 
Sept. 20, 2019, 7 p.m. 31.0 ppb (29) 20.7 ppb (19) N/A 10.0 ppb (9) N/A N/A N/A N/A N/A 7.0 μg/m3 (29) 29.0
 
Sept. 20, 2019, 6 p.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 4.0 μg/m3 (17) 33.0
 
Sept. 20, 2019, 5 p.m. 33.8 ppb (31) 23.3 ppb (22) N/A 10.0 ppb (9) N/A N/A N/A N/A N/A 5.0 μg/m3 (21) 31.0
 
Sept. 20, 2019, 4 p.m. 46.8 ppb (43) 35.2 ppb (33) N/A 12.0 ppb (11) N/A N/A N/A N/A N/A 7.0 μg/m3 (29) 43.0
 
Sept. 20, 2019, 3 p.m. 45.3 ppb (42) 33.1 ppb (31) N/A 12.0 ppb (11) N/A N/A N/A N/A N/A 6.0 μg/m3 (25) 42.0
 
Sept. 20, 2019, 2 p.m. 40.7 ppb (38) 28.0 ppb (26) N/A 13.0 ppb (12) N/A N/A N/A N/A N/A 3.0 μg/m3 (12) 38.0
 
Sept. 20, 2019, 1 p.m. 37.9 ppb (35) 25.0 ppb (23) N/A 13.0 ppb (12) N/A N/A N/A N/A N/A 5.0 μg/m3 (21) 35.0
 
Sept. 20, 2019, noon 33.4 ppb (31) 19.5 ppb (18) N/A 14.0 ppb (13) N/A N/A N/A N/A N/A 6.0 μg/m3 (25) 31.0
 
Sept. 20, 2019, 11 a.m. 34.9 ppb (32) 21.6 ppb (20) N/A 13.0 ppb (12) N/A N/A N/A N/A N/A 9.0 μg/m3 (38) 38.0
 
Sept. 20, 2019, 10 a.m. 14.3 ppb (13) 7.4 ppb (7) N/A 7.0 ppb (6) N/A N/A N/A N/A N/A 5.0 μg/m3 (21) 21.0
 
Sept. 20, 2019, 9 a.m. 14.7 ppb (14) 7.6 ppb (7) N/A 7.0 ppb (6) N/A N/A N/A N/A N/A 6.0 μg/m3 (25) 25.0
 
Sept. 20, 2019, 8 a.m. 17.6 ppb (16) 8.9 ppb (8) N/A 9.0 ppb (8) N/A N/A N/A N/A N/A 12.0 μg/m3 (50) 50.0
 
Sept. 20, 2019, 7 a.m. 10.6 ppb (10) 4.8 ppb (4) N/A 6.0 ppb (6) N/A N/A N/A N/A N/A 8.0 μg/m3 (33) 33.0
 
Sept. 20, 2019, 6 a.m. 13.9 ppb (13) 7.6 ppb (7) N/A 6.0 ppb (6) N/A N/A N/A N/A N/A 6.0 μg/m3 (25) 25.0
 
Sept. 20, 2019, 5 a.m. 14.3 ppb (13) 7.0 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
 
Sept. 20, 2019, 4 a.m. 17.1 ppb (16) 10.4 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
 
Sept. 20, 2019, 3 a.m. 26.1 ppb (24) 16.6 ppb (15) N/A 9.0 ppb (8) N/A N/A N/A N/A N/A 3.0 μg/m3 (12) 24.0
 
Sept. 20, 2019, 2 a.m. 25.3 ppb (23) 15.7 ppb (15) N/A 10.0 ppb (9) N/A N/A N/A N/A N/A 6.0 μg/m3 (25) 25.0
 
Sept. 20, 2019, 1 a.m. 31.7 ppb (29) 20.7 ppb (19) N/A 11.0 ppb (10) N/A N/A N/A N/A N/A 8.0 μg/m3 (33) 33.0
 
Sept. 20, 2019, midnight 31.5 ppb (29) 17.8 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
 
Sept. 19, 2019, 11 p.m. 25.4 ppb (24) 12.6 ppb (12) N/A 13.0 ppb (12) N/A N/A N/A N/A N/A 2.0 μg/m3 (8) 24.0
 
Sept. 19, 2019, 10 p.m. 25.5 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
 
Sept. 19, 2019, 9 p.m. 23.6 ppb (22) 13.2 ppb (12) N/A 10.0 ppb (9) N/A N/A N/A N/A N/A 4.0 μg/m3 (17) 22.0
 
Sept. 19, 2019, 8 p.m. 30.5 ppb (28) 16.9 ppb (16) N/A 14.0 ppb (13) N/A N/A N/A N/A N/A 1.0 μg/m3 (4) 28.0
 
Sept. 19, 2019, 7 p.m. 37.3 ppb (35) 22.4 ppb (21) N/A 15.0 ppb (14) N/A N/A N/A N/A N/A 3.0 μg/m3 (12) 35.0
 
Sept. 19, 2019, 6 p.m. 48.1 ppb (45) 29.9 ppb (28) N/A 18.0 ppb (17) N/A N/A N/A N/A N/A 5.0 μg/m3 (21) 45.0
 
Sept. 19, 2019, 5 p.m. 43.6 ppb (40) 30.1 ppb (28) N/A 13.0 ppb (12) N/A N/A N/A N/A N/A 7.0 μg/m3 (29) 40.0
 
Sept. 19, 2019, 4 p.m. 77.0 ppb (74) 63.0 ppb (60) N/A 14.0 ppb (13) N/A N/A N/A N/A N/A 9.0 μg/m3 (38) 74.0
 
Sept. 19, 2019, 3 p.m. 70.9 ppb (68) 58.5 ppb (55) N/A 12.0 ppb (11) N/A N/A N/A N/A N/A 10.0 μg/m3 (42) 68.0
 
Sept. 19, 2019, 2 p.m. 92.5 ppb (91) 81.0 ppb (79) N/A 12.0 ppb (11) N/A N/A N/A N/A N/A 16.0 μg/m3 (59) 91.0
 
Sept. 19, 2019, 1 p.m. 81.8 ppb (80) 69.4 ppb (66) N/A 12.0 ppb (11) N/A N/A N/A N/A N/A 8.0 μg/m3 (33) 80.0
 
Sept. 19, 2019, noon 74.3 ppb (72) 61.7 ppb (58) N/A 13.0 ppb (12) N/A N/A N/A N/A N/A 11.0 μg/m3 (46) 72.0
 
Sept. 19, 2019, 11 a.m. 81.9 ppb (80) 65.3 ppb (62) N/A 17.0 ppb (16) N/A N/A N/A N/A N/A 7.0 μg/m3 (29) 80.0
 
Sept. 19, 2019, 10 a.m. 51.9 ppb (48) 34.0 ppb (31) N/A 18.0 ppb (17) N/A N/A N/A N/A N/A 6.0 μg/m3 (25) 48.0
 
Sept. 19, 2019, 9 a.m. 36.2 ppb (34) 19.6 ppb (18) N/A 17.0 ppb (16) N/A N/A N/A N/A N/A 4.0 μg/m3 (17) 34.0
 
Sept. 19, 2019, 8 a.m. 38.7 ppb (36) 19.7 ppb (18) N/A 19.0 ppb (18) N/A N/A N/A N/A N/A 6.0 μg/m3 (25) 36.0
 
Sept. 19, 2019, 7 a.m. 46.4 ppb (43) 22.1 ppb (20) N/A 24.0 ppb (22) N/A N/A N/A N/A N/A 7.0 μg/m3 (29) 43.0
 
Sept. 19, 2019, 6 a.m. 24.3 ppb (23) 4.5 ppb (4) N/A 20.0 ppb (19) N/A N/A N/A N/A N/A 4.0 μg/m3 (17) 23.0
 
Sept. 19, 2019, 5 a.m. 18.0 ppb (17) 1.5 ppb (1) N/A 17.0 ppb (16) N/A N/A N/A N/A N/A 2.0 μg/m3 (8) 17.0
 
Sept. 19, 2019, 4 a.m. 22.0 ppb (20) 3.2 ppb (3) N/A 19.0 ppb (18) N/A N/A N/A N/A N/A 3.0 μg/m3 (12) 20.0
 
Sept. 19, 2019, 3 a.m. 32.1 ppb (30) 11.9 ppb (11) N/A 20.0 ppb (19) N/A N/A N/A N/A N/A 6.0 μg/m3 (25) 30.0
 
Sept. 19, 2019, 2 a.m. 28.5 ppb (26) 10.8 ppb (10) N/A 18.0 ppb (17) N/A N/A N/A N/A N/A 9.0 μg/m3 (38) 38.0
 
Sept. 19, 2019, 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
 
Sept. 19, 2019, midnight 23.4 ppb (22) 12.0 ppb (11) N/A 11.0 ppb (10) N/A N/A N/A N/A N/A 2.0 μg/m3 (8) 22.0
 
Sept. 18, 2019, 11 p.m. 28.8 ppb (27) 14.9 ppb (14) N/A 14.0 ppb (13) N/A N/A N/A N/A N/A 5.0 μg/m3 (21) 27.0
 
Sept. 18, 2019, 10 p.m. 23.6 ppb (22) 12.7 ppb (12) N/A 11.0 ppb (10) N/A N/A N/A N/A N/A 5.0 μg/m3 (21) 22.0
 
Sept. 18, 2019, 9 p.m. 28.4 ppb (26) 13.7 ppb (13) N/A 15.0 ppb (14) N/A N/A N/A N/A N/A 3.0 μg/m3 (12) 26.0
 
Sept. 18, 2019, 8 p.m. 31.7 ppb (29) 18.1 ppb (17) N/A 14.0 ppb (13) N/A N/A N/A N/A N/A 5.0 μg/m3 (21) 29.0
 
Sept. 18, 2019, 7 p.m. 47.7 ppb (44) 30.9 ppb (29) N/A 17.0 ppb (16) N/A N/A N/A N/A N/A 9.0 μg/m3 (38) 44.0
 
Sept. 18, 2019, 6 p.m. 64.8 ppb (61) 45.0 ppb (42) N/A 20.0 ppb (19) N/A N/A N/A N/A N/A 8.0 μg/m3 (33) 61.0
 
Sept. 18, 2019, 5 p.m. 51.6 ppb (48) 32.7 ppb (30) N/A 19.0 ppb (18) N/A N/A N/A N/A N/A 10.0 μg/m3 (42) 48.0
 
Sept. 18, 2019, 4 p.m. 41.8 ppb (39) 23.1 ppb (21) N/A 19.0 ppb (18) N/A N/A N/A N/A N/A 14.0 μg/m3 (54) 54.0
 
Sept. 18, 2019, 3 p.m. 66.6 ppb (63) 45.3 ppb (42) N/A 21.0 ppb (19) N/A N/A N/A N/A N/A 12.0 μg/m3 (50) 63.0
 
Sept. 18, 2019, 2 p.m. 68.4 ppb (65) 47.7 ppb (44) N/A 21.0 ppb (19) N/A N/A N/A N/A N/A 9.0 μg/m3 (38) 65.0
 
Sept. 18, 2019, 1 p.m. 29.1 ppb (27) 11.0 ppb (10) N/A 18.0 ppb (17) N/A N/A N/A N/A N/A 2.0 μg/m3 (8) 27.0
 
Sept. 18, 2019, noon 11.5 ppb (11) 0.7 ppb (1) N/A 11.0 ppb (10) N/A N/A N/A N/A N/A 3.0 μg/m3 (12) 12.0
 
Sept. 18, 2019, 11 a.m. 6.6 ppb (6) 0.2 ppb (0) N/A 6.0 ppb (6) N/A N/A N/A N/A N/A 3.0 μg/m3 (12) 12.0
 
Sept. 18, 2019, 10 a.m. 12.4 ppb (11) 0.6 ppb (1) N/A 12.0 ppb (11) N/A N/A N/A N/A N/A -1.0 μg/m3 (0) 11.0
 
Sept. 18, 2019, 9 a.m. 7.1 ppb (7) 0.1 ppb (0) N/A 7.0 ppb (6) N/A N/A N/A N/A N/A 6.0 μg/m3 (25) 25.0
 
Sept. 18, 2019, 8 a.m. 10.6 ppb (10) 1.5 ppb (1) N/A 9.0 ppb (8) N/A N/A N/A N/A N/A 14.0 μg/m3 (54) 54.0
 
Sept. 18, 2019, 7 a.m. 5.9 ppb (5) 0.2 ppb (0) N/A 6.0 ppb (6) N/A N/A N/A N/A N/A 3.0 μg/m3 (12) 12.0
 
Sept. 18, 2019, 6 a.m. 7.7 ppb (7) 0.5 ppb (0) N/A 7.0 ppb (6) N/A N/A N/A N/A N/A 5.0 μg/m3 (21) 21.0
 
Sept. 18, 2019, 5 a.m. 7.9 ppb (7) 0.3 ppb (0) N/A 8.0 ppb (7) N/A N/A N/A N/A N/A 3.0 μg/m3 (12) 12.0
 
Sept. 18, 2019, 4 a.m. 9.1 ppb (8) 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
 
Sept. 18, 2019, 3 a.m. 9.2 ppb (9) 0.8 ppb (1) N/A 8.0 ppb (7) N/A N/A N/A N/A N/A 6.0 μg/m3 (25) 25.0
 
Sept. 18, 2019, 2 a.m. 23.1 ppb (21) 6.0 ppb (6) N/A 17.0 ppb (16) N/A N/A N/A N/A N/A 3.0 μg/m3 (12) 21.0
 
Sept. 18, 2019, 1 a.m. 23.0 ppb (21) 8.6 ppb (8) N/A 14.0 ppb (13) N/A N/A N/A N/A N/A 3.0 μg/m3 (12) 21.0
 
Sept. 18, 2019, midnight 21.1 ppb (20) 10.1 ppb (9) N/A 11.0 ppb (10) N/A N/A N/A N/A N/A 1.0 μg/m3 (4) 20.0
 
Sept. 17, 2019, 11 p.m. 19.7 ppb (18) 10.5 ppb (10) N/A 9.0 ppb (8) N/A N/A N/A N/A N/A 1.0 μg/m3 (4) 18.0
 
Sept. 17, 2019, 10 p.m. 24.5 ppb (23) 13.0 ppb (12) N/A 11.0 ppb (10) N/A N/A N/A N/A N/A 0.0 μg/m3 (0) 23.0
 
Sept. 17, 2019, 9 p.m. 27.9 ppb (26) 14.6 ppb (14) N/A 13.0 ppb (12) N/A N/A N/A N/A N/A -1.0 μg/m3 (0) 26.0
 
Sept. 17, 2019, 8 p.m. 16.1 ppb (15) 6.9 ppb (6) N/A 9.0 ppb (8) N/A N/A N/A N/A N/A 1.0 μg/m3 (4) 15.0
 
Sept. 17, 2019, 7 p.m. 45.3 ppb (42) 23.8 ppb (22) N/A 21.0 ppb (19) N/A N/A N/A N/A N/A 4.0 μg/m3 (17) 42.0
 
Sept. 17, 2019, 6 p.m. 41.1 ppb (38) 22.3 ppb (21) N/A 19.0 ppb (18) N/A N/A N/A N/A N/A 5.0 μg/m3 (21) 38.0
 
Sept. 17, 2019, 5 p.m. 30.1 ppb (28) 14.5 ppb (13) N/A 16.0 ppb (15) N/A N/A N/A N/A N/A 4.0 μg/m3 (17) 28.0
 
Sept. 17, 2019, 4 p.m. 6.1 ppb (6) 1.2 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
 
Sept. 17, 2019, 3 p.m. 3.8 ppb (4) 0.5 ppb (0) N/A 3.0 ppb (3) N/A N/A N/A N/A N/A 0.0 μg/m3 (0) 4.0
 
Sept. 17, 2019, 2 p.m. 5.3 ppb (5) 0.6 ppb (1) N/A 5.0 ppb (5) N/A N/A N/A N/A N/A 0.0 μg/m3 (0) 5.0
 
Sept. 17, 2019, 1 p.m. 28.6 ppb (26) 12.9 ppb (12) N/A 16.0 ppb (15) N/A N/A N/A N/A N/A 2.0 μg/m3 (8) 26.0
 
Sept. 17, 2019, noon 2.9 ppb (3) 0.5 ppb (0) N/A 2.0 ppb (2) N/A N/A N/A N/A N/A 1.0 μg/m3 (4) 4.0
 
Sept. 17, 2019, 11 a.m. 4.2 ppb (4) 1.2 ppb (1) N/A 3.0 ppb (3) N/A N/A N/A N/A N/A 3.0 μg/m3 (12) 12.0
 
Sept. 17, 2019, 10 a.m. 3.8 ppb (4) 0.6 ppb (1) N/A 3.0 ppb (3) N/A N/A N/A N/A N/A 3.0 μg/m3 (12) 12.0
 
Sept. 17, 2019, 9 a.m. 2.2 ppb (2) 0.3 ppb (0) N/A 2.0 ppb (2) N/A N/A N/A N/A N/A 3.0 μg/m3 (12) 12.0
 
Sept. 17, 2019, 8 a.m. 2.2 ppb (2) 0.3 ppb (0) N/A 2.0 ppb (2) N/A N/A N/A N/A N/A 5.0 μg/m3 (21) 21.0
 
Sept. 17, 2019, 7 a.m. 4.8 ppb (4) 0.6 ppb (1) N/A 4.0 ppb (4) N/A N/A N/A N/A N/A 5.0 μg/m3 (21) 21.0
 
Sept. 17, 2019, 6 a.m. 4.8 ppb (4) 0.6 ppb (1) N/A 4.0 ppb (4) N/A N/A N/A N/A N/A 4.0 μg/m3 (17) 17.0
 
Sept. 17, 2019, 5 a.m. 7.8 ppb (7) 1.1 ppb (1) N/A 7.0 ppb (6) N/A N/A N/A N/A N/A 3.0 μg/m3 (12) 12.0
 
Sept. 17, 2019, 4 a.m. 10.4 ppb (10) 1.2 ppb (1) N/A 9.0 ppb (8) N/A N/A N/A N/A N/A 4.0 μg/m3 (17) 17.0
 
Sept. 17, 2019, 3 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
 
Sept. 17, 2019, 2 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
 
Sept. 17, 2019, 1 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
 
Sept. 17, 2019, midnight 24.5 ppb (23) 14.5 ppb (13) N/A 10.0 ppb (9) N/A N/A N/A N/A N/A N/A 23.0
 
Sept. 16, 2019, 11 p.m. 24.4 ppb (23) 12.6 ppb (12) N/A 12.0 ppb (11) N/A N/A N/A N/A N/A N/A 23.0
 
Sept. 16, 2019, 10 p.m. 27.8 ppb (26) 15.4 ppb (14) N/A 12.0 ppb (11) N/A N/A N/A N/A N/A N/A 26.0
 
Sept. 16, 2019, 9 p.m. 31.6 ppb (29) 19.2 ppb (18) N/A 12.0 ppb (11) N/A N/A N/A N/A N/A N/A 29.0
 
Sept. 16, 2019, 8 p.m. 26.9 ppb (25) 16.1 ppb (15) N/A 11.0 ppb (10) N/A N/A N/A N/A N/A N/A 25.0
 
Sept. 16, 2019, 7 p.m. 46.0 ppb (43) 30.6 ppb (28) N/A 15.0 ppb (14) N/A N/A N/A N/A N/A N/A 43.0
 
Sept. 16, 2019, 6 p.m. 42.5 ppb (39) 28.3 ppb (26) N/A 14.0 ppb (13) N/A N/A N/A N/A N/A N/A 39.0
 
Sept. 16, 2019, 5 p.m. 51.8 ppb (48) 36.8 ppb (34) N/A 15.0 ppb (14) N/A N/A N/A N/A N/A N/A 48.0
 
Sept. 16, 2019, 4 p.m. 37.0 ppb (34) 25.0 ppb (23) N/A 12.0 ppb (11) N/A N/A N/A N/A N/A N/A 34.0
 
Sept. 16, 2019, 3 p.m. 49.5 ppb (46) 37.8 ppb (35) N/A 12.0 ppb (11) N/A N/A N/A N/A N/A N/A 46.0
 
Sept. 16, 2019, 2 p.m. 88.6 ppb (87) 72.3 ppb (69) N/A 16.0 ppb (15) N/A N/A N/A N/A N/A N/A 87.0
 
Sept. 16, 2019, 1 p.m. 35.6 ppb (33) 23.4 ppb (22) N/A 12.0 ppb (11) N/A N/A N/A N/A N/A N/A 33.0
 
Sept. 16, 2019, noon 38.8 ppb (36) 25.3 ppb (23) N/A 14.0 ppb (13) N/A N/A N/A N/A N/A N/A 36.0
 
Sept. 16, 2019, 11 a.m. 49.9 ppb (46) 34.0 ppb (31) N/A 16.0 ppb (15) N/A N/A N/A N/A N/A N/A 46.0
 
Sept. 16, 2019, 10 a.m. 41.0 ppb (38) 26.4 ppb (24) N/A 15.0 ppb (14) N/A N/A N/A N/A N/A N/A 38.0
 
Sept. 16, 2019, 9 a.m. 26.0 ppb (24) 10.7 ppb (10) N/A 15.0 ppb (14) N/A N/A N/A N/A N/A N/A 24.0
 
Sept. 16, 2019, 8 a.m. 17.9 ppb (17) 4.7 ppb (4) N/A 13.0 ppb (12) N/A N/A N/A N/A N/A N/A 17.0
 
Sept. 16, 2019, 7 a.m. 16.1 ppb (15) 5.4 ppb (5) N/A 11.0 ppb (10) N/A N/A N/A N/A N/A N/A 15.0
 
Sept. 16, 2019, 6 a.m. 10.9 ppb (10) 4.1 ppb (4) N/A 7.0 ppb (6) N/A N/A N/A N/A N/A N/A 10.0
 
Sept. 16, 2019, 5 a.m. 14.4 ppb (13) 6.7 ppb (6) N/A 8.0 ppb (7) N/A N/A N/A N/A N/A N/A 13.0
 
Sept. 16, 2019, 4 a.m. 25.5 ppb (24) 11.4 ppb (11) N/A 14.0 ppb (13) N/A N/A N/A N/A N/A N/A 24.0
 
Sept. 16, 2019, 3 a.m. 27.6 ppb (26) 12.1 ppb (11) N/A 15.0 ppb (14) N/A N/A N/A N/A N/A N/A 26.0
 
Sept. 16, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A
Sept. 16, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A
Sept. 16, 2019, midnight 17.5 ppb (16) 7.9 ppb (7) N/A 10.0 ppb (9) N/A N/A N/A N/A N/A N/A 16.0
 
Sept. 15, 2019, 11 p.m. 16.1 ppb (15) 7.8 ppb (7) N/A 8.0 ppb (7) N/A N/A N/A N/A N/A N/A 15.0
 
Sept. 15, 2019, 10 p.m. 16.5 ppb (15) 7.5 ppb (7) N/A 9.0 ppb (8) N/A N/A N/A N/A N/A N/A 15.0
 
Sept. 15, 2019, 9 p.m. 16.9 ppb (16) 7.7 ppb (7) N/A 9.0 ppb (8) N/A N/A N/A N/A N/A N/A 16.0
 
Sept. 15, 2019, 8 p.m. 17.9 ppb (17) 8.8 ppb (8) N/A 9.0 ppb (8) N/A N/A N/A N/A N/A N/A 17.0