ID: 2645

AQSQID: 530530024

Site Name: Tacoma-S 36th St

Added: April 21, 2020, 6:24 p.m.

Updated: Sept. 19, 2021, 10:57 p.m.

Location: Tacoma (S End), WA

Reporting: True, Located: True

Current AQI: 21.0

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
Sept. 19, 2021, 9 p.m. 14.3 ppb (14) 7.5 ppb (8) N/A 7.0 ppb (7) N/A N/A N/A N/A N/A 5.0 μg/m3 (21) 21.0
 
Sept. 19, 2021, 8 p.m. 13.8 ppb (14) 6.6 ppb (7) N/A 7.0 ppb (7) N/A N/A N/A N/A N/A 5.0 μg/m3 (21) 21.0
 
Sept. 19, 2021, 7 p.m. 13.0 ppb (13) 6.9 ppb (7) N/A 6.0 ppb (6) N/A N/A N/A N/A N/A 4.0 μg/m3 (17) 17.0
 
Sept. 19, 2021, 6 p.m. 12.8 ppb (13) 7.3 ppb (7) N/A 6.0 ppb (6) N/A N/A N/A N/A N/A 5.0 μg/m3 (21) 21.0
 
Sept. 19, 2021, 5 p.m. 12.3 ppb (12) 6.7 ppb (7) N/A 6.0 ppb (6) N/A N/A N/A N/A N/A 5.0 μg/m3 (21) 21.0
 
Sept. 19, 2021, 4 p.m. 10.5 ppb (10) 5.8 ppb (6) N/A 5.0 ppb (5) N/A N/A N/A N/A N/A 2.0 μg/m3 (9) 10.0
 
Sept. 19, 2021, 3 p.m. 12.8 ppb (13) 6.2 ppb (6) N/A 7.0 ppb (7) N/A N/A N/A N/A N/A 3.0 μg/m3 (13) 13.0
 
Sept. 19, 2021, 2 p.m. 12.9 ppb (13) 4.9 ppb (5) N/A 8.0 ppb (8) N/A N/A N/A N/A N/A 0.0 μg/m3 (0) 13.0
 
Sept. 19, 2021, 1 p.m. 10.7 ppb (11) 3.7 ppb (4) N/A 7.0 ppb (7) N/A N/A N/A N/A N/A -1.0 μg/m3 (0) 11.0
 
Sept. 19, 2021, noon 9.7 ppb (10) 2.6 ppb (3) N/A 7.0 ppb (7) N/A N/A N/A N/A N/A 2.0 μg/m3 (9) 10.0
 
Sept. 19, 2021, 11 a.m. 12.6 ppb (12) 3.1 ppb (3) N/A 9.0 ppb (9) N/A N/A N/A N/A N/A 4.0 μg/m3 (17) 17.0
 
Sept. 19, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 2.0 μg/m3 (9) 9.0
 
Sept. 19, 2021, 9 a.m. 13.7 ppb (13) 3.5 ppb (4) N/A 10.0 ppb (10) N/A N/A N/A N/A N/A 2.0 μg/m3 (9) 13.0
 
Sept. 19, 2021, 8 a.m. 11.7 ppb (12) 2.2 ppb (3) N/A 9.0 ppb (9) N/A N/A N/A N/A N/A 3.0 μg/m3 (13) 13.0
 
Sept. 19, 2021, 7 a.m. 10.9 ppb (11) 0.9 ppb (1) N/A 10.0 ppb (10) N/A N/A N/A N/A N/A 4.0 μg/m3 (17) 17.0
 
Sept. 19, 2021, 6 a.m. 9.8 ppb (10) 1.6 ppb (2) N/A 8.0 ppb (8) N/A N/A N/A N/A N/A 4.0 μg/m3 (17) 17.0
 
Sept. 19, 2021, 5 a.m. 12.1 ppb (12) 2.6 ppb (3) N/A 9.0 ppb (9) N/A N/A N/A N/A N/A 4.0 μg/m3 (17) 17.0
 
Sept. 19, 2021, 4 a.m. 19.2 ppb (19) 8.2 ppb (8) N/A 11.0 ppb (11) N/A N/A N/A N/A N/A 6.0 μg/m3 (25) 25.0
 
Sept. 19, 2021, 3 a.m. 11.7 ppb (12) 3.1 ppb (3) N/A 9.0 ppb (9) N/A N/A N/A N/A N/A 6.0 μg/m3 (25) 25.0
 
Sept. 19, 2021, 2 a.m. 6.5 ppb (7) 0.5 ppb (1) N/A 6.0 ppb (6) N/A N/A N/A N/A N/A 4.0 μg/m3 (17) 17.0
 
Sept. 19, 2021, 1 a.m. 6.1 ppb (6) 0.8 ppb (1) N/A 5.0 ppb (5) N/A N/A N/A N/A N/A 3.0 μg/m3 (13) 13.0
 
Sept. 19, 2021, midnight 10.5 ppb (10) 2.7 ppb (3) N/A 8.0 ppb (8) N/A N/A N/A N/A N/A 2.0 μg/m3 (9) 10.0
 
Sept. 18, 2021, 11 p.m. 15.7 ppb (15) 4.5 ppb (5) N/A 11.0 ppb (11) N/A N/A N/A N/A N/A -1.0 μg/m3 (0) 15.0
 
Sept. 18, 2021, 10 p.m. 21.7 ppb (21) 8.6 ppb (9) N/A 13.0 ppb (13) N/A N/A N/A N/A N/A 1.0 μg/m3 (5) 21.0
 
Sept. 18, 2021, 9 p.m. 22.4 ppb (22) 8.7 ppb (9) N/A 14.0 ppb (14) N/A N/A N/A N/A N/A 7.0 μg/m3 (30) 30.0
 
Sept. 18, 2021, 8 p.m. 14.8 ppb (14) 5.3 ppb (5) N/A 10.0 ppb (10) N/A N/A N/A N/A N/A 6.0 μg/m3 (25) 25.0
 
Sept. 18, 2021, 7 p.m. 10.4 ppb (10) 4.2 ppb (4) N/A 6.0 ppb (6) N/A N/A N/A N/A N/A 2.0 μg/m3 (9) 10.0
 
Sept. 18, 2021, 6 p.m. 22.0 ppb (21) 8.9 ppb (9) N/A 13.0 ppb (13) N/A N/A N/A N/A N/A 1.0 μg/m3 (5) 21.0
 
Sept. 18, 2021, 5 p.m. 15.6 ppb (15) 5.9 ppb (6) N/A 10.0 ppb (10) N/A N/A N/A N/A N/A 1.0 μg/m3 (5) 15.0
 
Sept. 18, 2021, 4 p.m. 23.0 ppb (22) 8.2 ppb (8) N/A 15.0 ppb (15) N/A N/A N/A N/A N/A 2.0 μg/m3 (9) 22.0
 
Sept. 18, 2021, 3 p.m. 22.4 ppb (22) 6.6 ppb (7) N/A 16.0 ppb (16) N/A N/A N/A N/A N/A 2.0 μg/m3 (9) 22.0
 
Sept. 18, 2021, 2 p.m. 13.9 ppb (14) 2.8 ppb (3) N/A 11.0 ppb (11) N/A N/A N/A N/A N/A 2.0 μg/m3 (9) 14.0
 
Sept. 18, 2021, 1 p.m. 14.9 ppb (15) 3.2 ppb (4) N/A 12.0 ppb (12) N/A N/A N/A N/A N/A 4.0 μg/m3 (17) 17.0
 
Sept. 18, 2021, noon 8.5 ppb (9) 2.8 ppb (3) N/A 6.0 ppb (6) N/A N/A N/A N/A N/A 3.0 μg/m3 (13) 13.0
 
Sept. 18, 2021, 11 a.m. 9.9 ppb (10) 1.5 ppb (2) N/A 8.0 ppb (8) N/A N/A N/A N/A N/A 1.0 μg/m3 (5) 10.0
 
Sept. 18, 2021, 10 a.m. 1.2 ppb (2) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A N/A N/A N/A 4.0 μg/m3 (17) 17.0
 
Sept. 18, 2021, 9 a.m. 0.9 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A N/A N/A N/A 5.0 μg/m3 (21) 21.0
 
Sept. 18, 2021, 8 a.m. 3.2 ppb (4) 0.3 ppb (1) N/A 3.0 ppb (3) N/A N/A N/A N/A N/A 3.0 μg/m3 (13) 13.0
 
Sept. 18, 2021, 7 a.m. 7.1 ppb (7) 1.2 ppb (2) N/A 6.0 ppb (6) N/A N/A N/A N/A N/A 5.0 μg/m3 (21) 21.0
 
Sept. 18, 2021, 6 a.m. 6.1 ppb (6) 2.1 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
 
Sept. 18, 2021, 5 a.m. 5.8 ppb (6) 3.1 ppb (3) N/A 3.0 ppb (3) N/A N/A N/A N/A N/A 7.0 μg/m3 (30) 30.0
 
Sept. 18, 2021, 4 a.m. 9.1 ppb (9) 3.9 ppb (4) N/A 5.0 ppb (5) N/A N/A N/A N/A N/A 4.0 μg/m3 (17) 17.0
 
Sept. 18, 2021, 3 a.m. 10.0 ppb (10) 4.7 ppb (5) N/A 5.0 ppb (5) N/A N/A N/A N/A N/A 3.0 μg/m3 (13) 13.0
 
Sept. 18, 2021, 2 a.m. 15.2 ppb (15) 7.5 ppb (8) N/A 8.0 ppb (8) N/A N/A N/A N/A N/A 4.0 μg/m3 (17) 17.0
 
Sept. 18, 2021, 1 a.m. 14.8 ppb (14) 7.1 ppb (7) N/A 8.0 ppb (8) N/A N/A N/A N/A N/A 5.0 μg/m3 (21) 21.0
 
Sept. 18, 2021, midnight 15.4 ppb (15) 7.7 ppb (8) N/A 8.0 ppb (8) N/A N/A N/A N/A N/A 3.0 μg/m3 (13) 15.0
 
Sept. 17, 2021, 11 p.m. 27.7 ppb (27) 14.1 ppb (14) N/A 14.0 ppb (14) N/A N/A N/A N/A N/A 0.0 μg/m3 (0) 27.0
 
Sept. 17, 2021, 10 p.m. 47.7 ppb (45) 28.6 ppb (27) N/A 19.0 ppb (18) N/A N/A N/A N/A N/A 16.0 μg/m3 (60) 60.0
 
Sept. 17, 2021, 9 p.m. 28.3 ppb (27) 11.9 ppb (12) N/A 16.0 ppb (16) N/A N/A N/A N/A N/A 6.0 μg/m3 (25) 27.0
 
Sept. 17, 2021, 8 p.m. 19.5 ppb (19) 4.9 ppb (5) N/A 15.0 ppb (15) N/A N/A N/A N/A N/A 7.0 μg/m3 (30) 30.0
 
Sept. 17, 2021, 7 p.m. 18.5 ppb (18) 5.6 ppb (6) N/A 13.0 ppb (13) N/A N/A N/A N/A N/A 5.0 μg/m3 (21) 21.0
 
Sept. 17, 2021, 6 p.m. 15.7 ppb (15) 4.4 ppb (5) N/A 11.0 ppb (11) N/A N/A N/A N/A N/A 6.0 μg/m3 (25) 25.0
 
Sept. 17, 2021, 5 p.m. 19.7 ppb (19) 7.1 ppb (7) N/A 13.0 ppb (13) N/A N/A N/A N/A N/A 8.0 μg/m3 (34) 34.0
 
Sept. 17, 2021, 4 p.m. 59.5 ppb (57) 36.0 ppb (34) N/A 24.0 ppb (23) N/A N/A N/A N/A N/A 12.0 μg/m3 (50) 57.0
 
Sept. 17, 2021, 3 p.m. 57.0 ppb (55) 35.5 ppb (34) N/A 22.0 ppb (21) N/A N/A N/A N/A N/A 7.0 μg/m3 (30) 55.0
 
Sept. 17, 2021, 2 p.m. 58.0 ppb (56) 34.0 ppb (33) N/A 24.0 ppb (23) N/A N/A N/A N/A N/A 7.0 μg/m3 (30) 56.0
 
Sept. 17, 2021, 1 p.m. 57.8 ppb (56) 34.8 ppb (33) N/A 23.0 ppb (22) N/A N/A N/A N/A N/A 8.0 μg/m3 (34) 56.0
 
Sept. 17, 2021, noon 46.4 ppb (44) 25.8 ppb (25) N/A 21.0 ppb (20) N/A N/A N/A N/A N/A 12.0 μg/m3 (50) 50.0
 
Sept. 17, 2021, 11 a.m. 46.5 ppb (44) 23.0 ppb (22) N/A 23.0 ppb (22) N/A N/A N/A N/A N/A 12.0 μg/m3 (50) 50.0
 
Sept. 17, 2021, 10 a.m. 43.2 ppb (41) 16.4 ppb (16) N/A 27.0 ppb (26) N/A N/A N/A N/A N/A 8.0 μg/m3 (34) 41.0
 
Sept. 17, 2021, 9 a.m. 33.4 ppb (32) 6.6 ppb (7) N/A 27.0 ppb (26) N/A N/A N/A N/A N/A 6.0 μg/m3 (25) 32.0
 
Sept. 17, 2021, 8 a.m. 23.7 ppb (23) 1.0 ppb (1) N/A 23.0 ppb (22) N/A N/A N/A N/A N/A 23.0 μg/m3 (74) 74.0
 
Sept. 17, 2021, 7 a.m. 16.7 ppb (16) 1.9 ppb (2) N/A 15.0 ppb (15) N/A N/A N/A N/A N/A 5.0 μg/m3 (21) 21.0
 
Sept. 17, 2021, 6 a.m. 25.1 ppb (24) 6.1 ppb (6) N/A 19.0 ppb (18) N/A N/A N/A N/A N/A 8.0 μg/m3 (34) 34.0
 
Sept. 17, 2021, 5 a.m. 23.5 ppb (23) 3.7 ppb (4) N/A 20.0 ppb (19) N/A N/A N/A N/A N/A 7.0 μg/m3 (30) 30.0
 
Sept. 17, 2021, 4 a.m. 23.1 ppb (22) 5.0 ppb (5) N/A 18.0 ppb (17) N/A N/A N/A N/A N/A 5.0 μg/m3 (21) 22.0
 
Sept. 17, 2021, 3 a.m. 24.4 ppb (24) 4.5 ppb (5) N/A 20.0 ppb (19) N/A N/A N/A N/A N/A 8.0 μg/m3 (34) 34.0
 
Sept. 17, 2021, 2 a.m. 24.2 ppb (23) 1.7 ppb (2) N/A 23.0 ppb (22) N/A N/A N/A N/A N/A 8.0 μg/m3 (34) 34.0
 
Sept. 17, 2021, 1 a.m. 16.6 ppb (16) 2.1 ppb (2) N/A 15.0 ppb (15) N/A N/A N/A N/A N/A 6.0 μg/m3 (25) 25.0
 
Sept. 17, 2021, midnight 20.2 ppb (20) 7.3 ppb (7) N/A 13.0 ppb (13) N/A N/A N/A N/A N/A 5.0 μg/m3 (21) 21.0
 
Sept. 16, 2021, 11 p.m. 23.9 ppb (23) 10.9 ppb (11) N/A 13.0 ppb (13) N/A N/A N/A N/A N/A 3.0 μg/m3 (13) 23.0
 
Sept. 16, 2021, 10 p.m. 13.5 ppb (13) 5.4 ppb (6) N/A 8.0 ppb (8) N/A N/A N/A N/A N/A 6.0 μg/m3 (25) 25.0
 
Sept. 16, 2021, 9 p.m. 22.4 ppb (22) 12.3 ppb (12) N/A 10.0 ppb (10) N/A N/A N/A N/A N/A 5.0 μg/m3 (21) 22.0
 
Sept. 16, 2021, 8 p.m. 28.1 ppb (27) 17.1 ppb (17) N/A 11.0 ppb (11) N/A N/A N/A N/A N/A 3.0 μg/m3 (13) 27.0
 
Sept. 16, 2021, 7 p.m. 29.9 ppb (29) 17.1 ppb (17) N/A 13.0 ppb (13) N/A N/A N/A N/A N/A 4.0 μg/m3 (17) 29.0
 
Sept. 16, 2021, 6 p.m. 37.0 ppb (35) 22.8 ppb (22) N/A 14.0 ppb (14) N/A N/A N/A N/A N/A 6.0 μg/m3 (25) 35.0
 
Sept. 16, 2021, 5 p.m. 34.6 ppb (33) 22.4 ppb (22) N/A 12.0 ppb (12) N/A N/A N/A N/A N/A 6.0 μg/m3 (25) 33.0
 
Sept. 16, 2021, 4 p.m. 39.1 ppb (37) 25.8 ppb (25) N/A 13.0 ppb (13) N/A N/A N/A N/A N/A 10.0 μg/m3 (42) 42.0
 
Sept. 16, 2021, 3 p.m. 71.1 ppb (70) 50.7 ppb (48) N/A 20.0 ppb (19) N/A N/A N/A N/A N/A 11.0 μg/m3 (46) 70.0
 
Sept. 16, 2021, 2 p.m. 82.9 ppb (82) 61.5 ppb (59) N/A 21.0 ppb (20) N/A N/A N/A N/A N/A 8.0 μg/m3 (34) 82.0
 
Sept. 16, 2021, 1 p.m. 52.5 ppb (50) 33.7 ppb (32) N/A 19.0 ppb (18) N/A N/A N/A N/A N/A 6.0 μg/m3 (25) 50.0
 
Sept. 16, 2021, noon 47.5 ppb (45) 27.5 ppb (26) N/A 20.0 ppb (19) N/A N/A N/A N/A N/A 4.0 μg/m3 (17) 45.0
 
Sept. 16, 2021, 11 a.m. 45.9 ppb (44) 27.1 ppb (26) N/A 19.0 ppb (18) N/A N/A N/A N/A N/A 6.0 μg/m3 (25) 44.0
 
Sept. 16, 2021, 10 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. 16, 2021, 9 a.m. 20.4 ppb (20) 5.4 ppb (6) N/A 15.0 ppb (15) N/A N/A N/A N/A N/A 3.0 μg/m3 (13) 20.0
 
Sept. 16, 2021, 8 a.m. 12.3 ppb (12) 0.3 ppb (1) N/A 12.0 ppb (12) N/A N/A N/A N/A N/A 4.0 μg/m3 (17) 17.0
 
Sept. 16, 2021, 7 a.m. 10.5 ppb (10) 0.9 ppb (1) N/A 10.0 ppb (10) N/A N/A N/A N/A N/A 6.0 μg/m3 (25) 25.0
 
Sept. 16, 2021, 6 a.m. 12.9 ppb (13) 1.5 ppb (2) N/A 11.0 ppb (11) N/A N/A N/A N/A N/A 4.0 μg/m3 (17) 17.0
 
Sept. 16, 2021, 5 a.m. 25.3 ppb (24) 11.3 ppb (11) N/A 14.0 ppb (14) N/A N/A N/A N/A N/A 5.0 μg/m3 (21) 24.0
 
Sept. 16, 2021, 4 a.m. 30.6 ppb (29) 13.9 ppb (14) N/A 17.0 ppb (17) N/A N/A N/A N/A N/A 5.0 μg/m3 (21) 29.0
 
Sept. 16, 2021, 3 a.m. 26.3 ppb (25) 8.4 ppb (8) N/A 18.0 ppb (17) N/A N/A N/A N/A N/A 6.0 μg/m3 (25) 25.0
 
Sept. 16, 2021, 2 a.m. 21.6 ppb (21) 5.2 ppb (5) N/A 16.0 ppb (16) N/A N/A N/A N/A N/A 9.0 μg/m3 (38) 38.0
 
Sept. 16, 2021, 1 a.m. 26.3 ppb (25) 11.0 ppb (11) N/A 15.0 ppb (15) N/A N/A N/A N/A N/A 8.0 μg/m3 (34) 34.0
 
Sept. 16, 2021, midnight 24.9 ppb (24) 12.0 ppb (12) N/A 13.0 ppb (13) N/A N/A N/A N/A N/A 6.0 μg/m3 (25) 25.0
 
Sept. 15, 2021, 11 p.m. 18.6 ppb (18) 8.7 ppb (9) N/A 10.0 ppb (10) N/A N/A N/A N/A N/A 3.0 μg/m3 (13) 18.0
 
Sept. 15, 2021, 10 p.m. 17.9 ppb (17) 8.9 ppb (9) N/A 9.0 ppb (9) N/A N/A N/A N/A N/A 5.0 μg/m3 (21) 21.0
 
Sept. 15, 2021, 9 p.m. 23.2 ppb (22) 12.2 ppb (12) N/A 11.0 ppb (11) N/A N/A N/A N/A N/A 9.0 μg/m3 (38) 38.0
 
Sept. 15, 2021, 8 p.m. 25.6 ppb (25) 12.4 ppb (12) N/A 13.0 ppb (13) N/A N/A N/A N/A N/A 7.0 μg/m3 (30) 30.0
 
Sept. 15, 2021, 7 p.m. 28.6 ppb (27) 13.1 ppb (13) N/A 16.0 ppb (16) N/A N/A N/A N/A N/A 6.0 μg/m3 (25) 27.0
 
Sept. 15, 2021, 6 p.m. 18.5 ppb (18) 8.0 ppb (8) N/A 11.0 ppb (11) N/A N/A N/A N/A N/A 4.0 μg/m3 (17) 18.0
 
Sept. 15, 2021, 5 p.m. 32.3 ppb (31) 18.0 ppb (17) N/A 14.0 ppb (14) N/A N/A N/A N/A N/A 5.0 μg/m3 (21) 31.0
 
Sept. 15, 2021, 4 p.m. 5.8 ppb (6) 0.9 ppb (1) N/A 5.0 ppb (5) N/A N/A N/A N/A N/A 5.0 μg/m3 (21) 21.0
 
Sept. 15, 2021, 3 p.m. 7.8 ppb (8) 0.7 ppb (1) N/A 7.0 ppb (7) N/A N/A N/A N/A N/A 5.0 μg/m3 (21) 21.0
 
Sept. 15, 2021, 2 p.m. 32.4 ppb (31) 15.8 ppb (15) N/A 17.0 ppb (17) N/A N/A N/A N/A N/A 5.0 μg/m3 (21) 31.0
 
Sept. 15, 2021, 1 p.m. 34.9 ppb (33) 18.4 ppb (18) N/A 16.0 ppb (16) N/A N/A N/A N/A N/A 4.0 μg/m3 (17) 33.0
 
Sept. 15, 2021, noon 22.2 ppb (21) 11.8 ppb (12) N/A 10.0 ppb (10) N/A N/A N/A N/A N/A 3.0 μg/m3 (13) 21.0
 
Sept. 15, 2021, 11 a.m. 14.5 ppb (14) 8.0 ppb (8) N/A 7.0 ppb (7) N/A N/A N/A N/A N/A 1.0 μg/m3 (5) 14.0
 
Sept. 15, 2021, 10 a.m. 10.7 ppb (11) 4.7 ppb (5) N/A 6.0 ppb (6) N/A N/A N/A N/A N/A 3.0 μg/m3 (13) 13.0
 
Sept. 15, 2021, 9 a.m. 9.1 ppb (9) 4.2 ppb (4) N/A 5.0 ppb (5) N/A N/A N/A N/A N/A 4.0 μg/m3 (17) 17.0
 
Sept. 15, 2021, 8 a.m. 5.1 ppb (5) 2.9 ppb (3) N/A 2.0 ppb (2) N/A N/A N/A N/A N/A 1.0 μg/m3 (5) 5.0
 
Sept. 15, 2021, 7 a.m. 8.1 ppb (8) 4.2 ppb (4) N/A 4.0 ppb (4) N/A N/A N/A N/A N/A 3.0 μg/m3 (13) 13.0
 
Sept. 15, 2021, 6 a.m. 10.2 ppb (10) 5.0 ppb (5) N/A 5.0 ppb (5) N/A N/A N/A N/A N/A 3.0 μg/m3 (13) 13.0
 
Sept. 15, 2021, 5 a.m. 16.8 ppb (16) 8.1 ppb (8) N/A 9.0 ppb (9) N/A N/A N/A N/A N/A 3.0 μg/m3 (13) 16.0
 
Sept. 15, 2021, 4 a.m. 18.6 ppb (18) 8.5 ppb (9) N/A 10.0 ppb (10) N/A N/A N/A N/A N/A 2.0 μg/m3 (9) 18.0
 
Sept. 15, 2021, 3 a.m. 21.0 ppb (20) 10.3 ppb (10) N/A 11.0 ppb (11) N/A N/A N/A N/A N/A 3.0 μg/m3 (13) 20.0
 
Sept. 15, 2021, 2 a.m. 22.9 ppb (22) 11.7 ppb (12) N/A 11.0 ppb (11) N/A N/A N/A N/A N/A 6.0 μg/m3 (25) 25.0
 
Sept. 15, 2021, 1 a.m. 20.7 ppb (20) 11.9 ppb (12) N/A 9.0 ppb (9) N/A N/A N/A N/A N/A 4.0 μg/m3 (17) 20.0
 
Sept. 15, 2021, midnight 29.0 ppb (28) 16.8 ppb (16) N/A 12.0 ppb (12) N/A N/A N/A N/A N/A 4.0 μg/m3 (17) 28.0
 
Sept. 14, 2021, 11 p.m. 29.1 ppb (28) 14.3 ppb (14) N/A 15.0 ppb (15) N/A N/A N/A N/A N/A 6.0 μg/m3 (25) 28.0
 
Sept. 14, 2021, 10 p.m. 34.2 ppb (33) 17.3 ppb (17) N/A 17.0 ppb (17) N/A N/A N/A N/A N/A 7.0 μg/m3 (30) 33.0
 
Sept. 14, 2021, 9 p.m. 36.8 ppb (35) 20.0 ppb (19) N/A 17.0 ppb (17) N/A N/A N/A N/A N/A 11.0 μg/m3 (46) 46.0
 
Sept. 14, 2021, 8 p.m. 39.3 ppb (38) 21.9 ppb (21) N/A 17.0 ppb (17) N/A N/A N/A N/A N/A 7.0 μg/m3 (30) 38.0
 
Sept. 14, 2021, 7 p.m. 42.4 ppb (40) 24.4 ppb (24) N/A 18.0 ppb (17) N/A N/A N/A N/A N/A 6.0 μg/m3 (25) 40.0
 
Sept. 14, 2021, 6 p.m. 29.7 ppb (29) 15.7 ppb (15) N/A 14.0 ppb (14) N/A N/A N/A N/A N/A 8.0 μg/m3 (34) 34.0
 
Sept. 14, 2021, 5 p.m. 28.3 ppb (27) 15.1 ppb (15) N/A 13.0 ppb (13) N/A N/A N/A N/A N/A 5.0 μg/m3 (21) 27.0
 
Sept. 14, 2021, 4 p.m. 32.7 ppb (31) 19.5 ppb (19) N/A 13.0 ppb (13) N/A N/A N/A N/A N/A 5.0 μg/m3 (21) 31.0
 
Sept. 14, 2021, 3 p.m. 51.7 ppb (49) 34.3 ppb (33) N/A 17.0 ppb (17) N/A N/A N/A N/A N/A 7.0 μg/m3 (30) 49.0
 
Sept. 14, 2021, 2 p.m. 42.6 ppb (41) 25.9 ppb (25) N/A 17.0 ppb (17) N/A N/A N/A N/A N/A 6.0 μg/m3 (25) 41.0
 
Sept. 14, 2021, 1 p.m. 38.1 ppb (36) 18.9 ppb (18) N/A 19.0 ppb (18) N/A N/A N/A N/A N/A 8.0 μg/m3 (34) 36.0
 
Sept. 14, 2021, noon 58.4 ppb (56) 36.7 ppb (35) N/A 22.0 ppb (21) N/A N/A N/A N/A N/A 12.0 μg/m3 (50) 56.0
 
Sept. 14, 2021, 11 a.m. 27.7 ppb (27) 6.6 ppb (7) N/A 21.0 ppb (20) N/A N/A N/A N/A N/A 8.0 μg/m3 (34) 34.0
 
Sept. 14, 2021, 10 a.m. 27.6 ppb (27) 3.7 ppb (4) N/A 24.0 ppb (23) N/A N/A N/A N/A N/A 6.0 μg/m3 (25) 27.0
 
Sept. 14, 2021, 9 a.m. 24.9 ppb (24) 2.6 ppb (3) N/A 22.0 ppb (21) N/A N/A N/A N/A N/A 4.0 μg/m3 (17) 24.0
 
Sept. 14, 2021, 8 a.m. 14.3 ppb (14) 0.4 ppb (1) N/A 14.0 ppb (14) N/A N/A N/A N/A N/A 8.0 μg/m3 (34) 34.0
 
Sept. 14, 2021, 7 a.m. 20.5 ppb (20) 2.8 ppb (3) N/A 18.0 ppb (17) N/A N/A N/A N/A N/A 9.0 μg/m3 (38) 38.0
 
Sept. 14, 2021, 6 a.m. 26.0 ppb (25) 5.8 ppb (6) N/A 20.0 ppb (19) N/A N/A N/A N/A N/A 7.0 μg/m3 (30) 30.0
 
Sept. 14, 2021, 5 a.m. 22.2 ppb (21) 3.5 ppb (4) N/A 19.0 ppb (18) N/A N/A N/A N/A N/A 5.0 μg/m3 (21) 21.0
 
Sept. 14, 2021, 4 a.m. 12.7 ppb (12) 1.0 ppb (1) N/A 12.0 ppb (12) N/A N/A N/A N/A N/A 6.0 μg/m3 (25) 25.0
 
Sept. 14, 2021, 3 a.m. 13.2 ppb (13) 1.7 ppb (2) N/A 12.0 ppb (12) N/A N/A N/A N/A N/A 6.0 μg/m3 (25) 25.0
 
Sept. 14, 2021, 2 a.m. 11.8 ppb (12) 2.6 ppb (3) N/A 9.0 ppb (9) N/A N/A N/A N/A N/A 6.0 μg/m3 (25) 25.0
 
Sept. 14, 2021, 1 a.m. 20.4 ppb (20) 7.3 ppb (7) N/A 13.0 ppb (13) N/A N/A N/A N/A N/A 5.0 μg/m3 (21) 21.0
 
Sept. 14, 2021, midnight 15.1 ppb (15) 5.8 ppb (6) N/A 9.0 ppb (9) N/A N/A N/A N/A N/A 4.0 μg/m3 (17) 17.0
 
Sept. 13, 2021, 11 p.m. 20.2 ppb (20) 9.9 ppb (10) N/A 10.0 ppb (10) N/A N/A N/A N/A N/A 5.0 μg/m3 (21) 21.0
 
Sept. 13, 2021, 10 p.m. 21.8 ppb (21) 10.5 ppb (10) N/A 11.0 ppb (11) N/A N/A N/A N/A N/A 5.0 μg/m3 (21) 21.0
 
Sept. 13, 2021, 9 p.m. 12.8 ppb (13) 6.1 ppb (6) N/A 7.0 ppb (7) N/A N/A N/A N/A N/A 4.0 μg/m3 (17) 17.0
 
Sept. 13, 2021, 8 p.m. 14.1 ppb (14) 7.2 ppb (7) N/A 7.0 ppb (7) N/A N/A N/A N/A N/A 3.0 μg/m3 (13) 14.0
 
Sept. 13, 2021, 7 p.m. 17.5 ppb (17) 9.6 ppb (10) N/A 8.0 ppb (8) N/A N/A N/A N/A N/A 5.0 μg/m3 (21) 21.0
 
Sept. 13, 2021, 6 p.m. 17.5 ppb (17) 9.9 ppb (10) N/A 8.0 ppb (8) N/A N/A N/A N/A N/A 7.0 μg/m3 (30) 30.0
 
Sept. 13, 2021, 5 p.m. 27.8 ppb (27) 16.2 ppb (16) N/A 12.0 ppb (12) N/A N/A N/A N/A N/A 6.0 μg/m3 (25) 27.0
 
Sept. 13, 2021, 4 p.m. 22.0 ppb (21) 8.3 ppb (8) N/A 14.0 ppb (14) N/A N/A N/A N/A N/A 5.0 μg/m3 (21) 21.0
 
Sept. 13, 2021, 3 p.m. 18.3 ppb (18) 6.1 ppb (6) N/A 12.0 ppb (12) N/A N/A N/A N/A N/A 2.0 μg/m3 (9) 18.0
 
Sept. 13, 2021, 2 p.m. 17.7 ppb (17) 2.7 ppb (3) N/A 15.0 ppb (15) N/A N/A N/A N/A N/A 5.0 μg/m3 (21) 21.0
 
Sept. 13, 2021, 1 p.m. 19.9 ppb (19) 3.8 ppb (4) N/A 16.0 ppb (16) N/A N/A N/A N/A N/A 6.0 μg/m3 (25) 25.0
 
Sept. 13, 2021, noon 20.8 ppb (20) 5.3 ppb (5) N/A 16.0 ppb (16) N/A N/A N/A N/A N/A 3.0 μg/m3 (13) 20.0
 
Sept. 13, 2021, 11 a.m. 23.7 ppb (23) 10.1 ppb (10) N/A 14.0 ppb (14) N/A N/A N/A N/A N/A 5.0 μg/m3 (21) 23.0
 
Sept. 13, 2021, 10 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. 13, 2021, 9 a.m. 11.4 ppb (11) 2.8 ppb (3) N/A 9.0 ppb (9) N/A N/A N/A N/A N/A 4.0 μg/m3 (17) 17.0
 
Sept. 13, 2021, 8 a.m. 12.4 ppb (12) 4.0 ppb (4) N/A 8.0 ppb (8) N/A N/A N/A N/A N/A 7.0 μg/m3 (30) 30.0
 
Sept. 13, 2021, 7 a.m. 14.2 ppb (14) 3.8 ppb (4) N/A 10.0 ppb (10) N/A N/A N/A N/A N/A 8.0 μg/m3 (34) 34.0
 
Sept. 13, 2021, 6 a.m. 22.8 ppb (22) 6.5 ppb (7) N/A 16.0 ppb (16) N/A N/A N/A N/A N/A 8.0 μg/m3 (34) 34.0
 
Sept. 13, 2021, 5 a.m. 20.9 ppb (20) 6.7 ppb (7) N/A 14.0 ppb (14) N/A N/A N/A N/A N/A 7.0 μg/m3 (30) 30.0
 
Sept. 13, 2021, 4 a.m. 23.7 ppb (23) 8.3 ppb (8) N/A 15.0 ppb (15) N/A N/A N/A N/A N/A 6.0 μg/m3 (25) 25.0
 
Sept. 13, 2021, 3 a.m. 22.2 ppb (21) 6.5 ppb (7) N/A 16.0 ppb (16) N/A N/A N/A N/A N/A 6.0 μg/m3 (25) 25.0
 
Sept. 13, 2021, 2 a.m. 20.8 ppb (20) 3.9 ppb (4) N/A 17.0 ppb (17) N/A N/A N/A N/A N/A 10.0 μg/m3 (42) 42.0
 
Sept. 13, 2021, 1 a.m. 20.0 ppb (19) 6.5 ppb (7) N/A 14.0 ppb (14) N/A N/A N/A N/A N/A 5.0 μg/m3 (21) 21.0
 
Sept. 13, 2021, midnight 17.2 ppb (17) 7.4 ppb (7) N/A 10.0 ppb (10) N/A N/A N/A N/A N/A 6.0 μg/m3 (25) 25.0
 
Sept. 12, 2021, 11 p.m. 16.3 ppb (16) 6.6 ppb (7) N/A 10.0 ppb (10) N/A N/A N/A N/A N/A 6.0 μg/m3 (25) 25.0
 
Sept. 12, 2021, 10 p.m. 15.9 ppb (15) 6.7 ppb (7) N/A 9.0 ppb (9) N/A N/A N/A N/A N/A 7.0 μg/m3 (30) 30.0