ID: 2645

AQSQID: 530530024

Site Name: Tacoma-S 36th St

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

Updated: March 7, 2021, 11:32 p.m.

Location: Tacoma (S End), WA

Reporting: True, Located: True

Current AQI: 14.0

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
Feb. 28, 2021, 7 p.m. 13.7 ppb (13) 6.2 ppb (6) N/A 8.0 ppb (8) N/A N/A N/A N/A N/A 7.0 μg/m3 (30) 30.0
 
Feb. 28, 2021, 6 p.m. 15.0 ppb (15) 6.1 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
 
Feb. 28, 2021, 5 p.m. 14.5 ppb (14) 5.5 ppb (6) N/A 9.0 ppb (9) N/A N/A N/A N/A N/A 3.0 μg/m3 (13) 14.0
 
Feb. 28, 2021, 4 p.m. 16.4 ppb (16) 5.3 ppb (5) N/A 11.0 ppb (11) N/A N/A N/A N/A N/A 4.0 μg/m3 (17) 17.0
 
Feb. 28, 2021, 3 p.m. 11.6 ppb (11) 2.6 ppb (3) N/A 9.0 ppb (9) N/A N/A N/A N/A N/A 2.0 μg/m3 (9) 11.0
 
Feb. 28, 2021, 2 p.m. 6.4 ppb (7) 0.9 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
 
Feb. 28, 2021, 1 p.m. 7.2 ppb (7) 1.3 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
 
Feb. 28, 2021, noon 6.6 ppb (7) 1.2 ppb (2) N/A 5.0 ppb (5) N/A N/A N/A N/A N/A 4.0 μg/m3 (17) 17.0
 
Feb. 28, 2021, 11 a.m. 5.1 ppb (5) 0.9 ppb (1) N/A 4.0 ppb (4) N/A N/A N/A N/A N/A 6.0 μg/m3 (25) 25.0
 
Feb. 28, 2021, 10 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
 
Feb. 28, 2021, 9 a.m. 5.7 ppb (6) 0.8 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
 
Feb. 28, 2021, 8 a.m. 6.3 ppb (6) 1.2 ppb (2) N/A 5.0 ppb (5) N/A N/A N/A N/A N/A 11.0 μg/m3 (46) 46.0
 
Feb. 28, 2021, 7 a.m. 10.2 ppb (10) 2.1 ppb (2) N/A 8.0 ppb (8) N/A N/A N/A N/A N/A 13.0 μg/m3 (53) 53.0
 
Feb. 28, 2021, 6 a.m. 13.3 ppb (13) 4.0 ppb (4) N/A 9.0 ppb (9) N/A N/A N/A N/A N/A 10.0 μg/m3 (42) 42.0
 
Feb. 28, 2021, 5 a.m. 10.3 ppb (10) 3.5 ppb (4) N/A 7.0 ppb (7) N/A N/A N/A N/A N/A 7.0 μg/m3 (30) 30.0
 
Feb. 28, 2021, 4 a.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 11.0 μg/m3 (46) 46.0
 
Feb. 28, 2021, 3 a.m. 17.1 ppb (17) 6.3 ppb (6) N/A 11.0 ppb (11) N/A N/A N/A N/A N/A 13.0 μg/m3 (53) 53.0
 
Feb. 28, 2021, 2 a.m. 18.4 ppb (18) 7.6 ppb (8) N/A 11.0 ppb (11) N/A N/A N/A N/A N/A 11.0 μg/m3 (46) 46.0
 
Feb. 28, 2021, 1 a.m. 26.8 ppb (26) 12.3 ppb (12) N/A 15.0 ppb (15) N/A N/A N/A N/A N/A 5.0 μg/m3 (21) 26.0
 
Feb. 28, 2021, midnight 23.4 ppb (23) 12.4 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
 
Feb. 27, 2021, 11 p.m. 19.9 ppb (19) 10.4 ppb (10) N/A 9.0 ppb (9) N/A N/A N/A N/A N/A 6.0 μg/m3 (25) 25.0
 
Feb. 27, 2021, 10 p.m. 16.4 ppb (16) 7.9 ppb (8) N/A 9.0 ppb (9) N/A N/A N/A N/A N/A 4.0 μg/m3 (17) 17.0
 
Feb. 27, 2021, 9 p.m. 19.4 ppb (19) 9.0 ppb (9) N/A 10.0 ppb (10) N/A N/A N/A N/A N/A 6.0 μg/m3 (25) 25.0
 
Feb. 27, 2021, 8 p.m. 5.4 ppb (6) 2.0 ppb (2) N/A 3.0 ppb (3) N/A N/A N/A N/A N/A 5.0 μg/m3 (21) 21.0
 
Feb. 27, 2021, 7 p.m. 8.3 ppb (8) 3.4 ppb (4) N/A 5.0 ppb (5) N/A N/A N/A N/A N/A 5.0 μg/m3 (21) 21.0
 
Feb. 27, 2021, 6 p.m. 18.7 ppb (18) 9.4 ppb (9) N/A 9.0 ppb (9) N/A N/A N/A N/A N/A 7.0 μg/m3 (30) 30.0
 
Feb. 27, 2021, 5 p.m. 34.7 ppb (33) 20.4 ppb (20) N/A 14.0 ppb (14) N/A N/A N/A N/A N/A 8.0 μg/m3 (34) 34.0
 
Feb. 27, 2021, 4 p.m. 45.4 ppb (43) 27.7 ppb (27) N/A 18.0 ppb (17) N/A N/A N/A N/A N/A 10.0 μg/m3 (42) 43.0
 
Feb. 27, 2021, 3 p.m. 53.6 ppb (51) 31.7 ppb (30) N/A 22.0 ppb (21) N/A N/A N/A N/A N/A 11.0 μg/m3 (46) 51.0
 
Feb. 27, 2021, 2 p.m. 42.0 ppb (40) 19.9 ppb (19) N/A 22.0 ppb (21) N/A N/A N/A N/A N/A 9.0 μg/m3 (38) 40.0
 
Feb. 27, 2021, 1 p.m. 42.1 ppb (40) 17.9 ppb (17) N/A 24.0 ppb (23) N/A N/A N/A N/A N/A 10.0 μg/m3 (42) 42.0
 
Feb. 27, 2021, noon 41.0 ppb (39) 16.1 ppb (16) N/A 25.0 ppb (24) N/A N/A N/A N/A N/A 10.0 μg/m3 (42) 42.0
 
Feb. 27, 2021, 11 a.m. 22.3 ppb (22) 4.4 ppb (5) N/A 18.0 ppb (17) N/A N/A N/A N/A N/A 9.0 μg/m3 (38) 38.0
 
Feb. 27, 2021, 10 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
 
Feb. 27, 2021, 9 a.m. 21.9 ppb (21) 4.6 ppb (5) N/A 17.0 ppb (17) N/A N/A N/A N/A N/A 15.0 μg/m3 (58) 58.0
 
Feb. 27, 2021, 8 a.m. 18.1 ppb (18) 1.9 ppb (2) N/A 16.0 ppb (16) N/A N/A N/A N/A N/A 8.0 μg/m3 (34) 34.0
 
Feb. 27, 2021, 7 a.m. 10.5 ppb (10) 0.4 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
 
Feb. 27, 2021, 6 a.m. 8.4 ppb (8) 1.4 ppb (2) N/A 7.0 ppb (7) N/A N/A N/A N/A N/A 6.0 μg/m3 (25) 25.0
 
Feb. 27, 2021, 5 a.m. 11.3 ppb (11) 5.1 ppb (5) N/A 6.0 ppb (6) N/A N/A N/A N/A N/A 6.0 μg/m3 (25) 25.0
 
Feb. 27, 2021, 4 a.m. 19.1 ppb (19) 7.6 ppb (8) N/A 12.0 ppb (12) N/A N/A N/A N/A N/A 7.0 μg/m3 (30) 30.0
 
Feb. 27, 2021, 3 a.m. 18.0 ppb (17) 8.8 ppb (9) N/A 9.0 ppb (9) N/A N/A N/A N/A N/A 10.0 μg/m3 (42) 42.0
 
Feb. 27, 2021, 2 a.m. 18.4 ppb (18) 9.2 ppb (9) N/A 9.0 ppb (9) N/A N/A N/A N/A N/A 7.0 μg/m3 (30) 30.0
 
Feb. 27, 2021, 1 a.m. 12.2 ppb (12) 6.0 ppb (6) N/A 6.0 ppb (6) N/A N/A N/A N/A N/A 8.0 μg/m3 (34) 34.0
 
Feb. 27, 2021, midnight 16.4 ppb (16) 9.4 ppb (9) N/A 7.0 ppb (7) N/A N/A N/A N/A N/A 7.0 μg/m3 (30) 30.0
 
Feb. 26, 2021, 11 p.m. 12.8 ppb (13) 8.0 ppb (8) N/A 5.0 ppb (5) N/A N/A N/A N/A N/A 2.0 μg/m3 (9) 13.0
 
Feb. 26, 2021, 10 p.m. 17.6 ppb (17) 10.4 ppb (10) N/A 7.0 ppb (7) N/A N/A N/A N/A N/A 4.0 μg/m3 (17) 17.0
 
Feb. 26, 2021, 9 p.m. 22.3 ppb (22) 13.2 ppb (13) N/A 9.0 ppb (9) N/A N/A N/A N/A N/A 6.0 μg/m3 (25) 25.0
 
Feb. 26, 2021, 8 p.m. 29.6 ppb (28) 17.1 ppb (17) N/A 12.0 ppb (12) N/A N/A N/A N/A N/A 2.0 μg/m3 (9) 28.0
 
Feb. 26, 2021, 7 p.m. 31.3 ppb (30) 18.5 ppb (18) N/A 13.0 ppb (13) N/A N/A N/A N/A N/A 16.0 μg/m3 (60) 60.0
 
Feb. 26, 2021, 6 p.m. 32.3 ppb (31) 17.8 ppb (17) N/A 14.0 ppb (14) N/A N/A N/A N/A N/A N/A 31.0
 
Feb. 26, 2021, 5 p.m. 33.4 ppb (32) 18.6 ppb (18) N/A 15.0 ppb (15) N/A N/A N/A N/A N/A 7.0 μg/m3 (30) 32.0
 
Feb. 26, 2021, 4 p.m. 46.2 ppb (44) 23.8 ppb (23) N/A 22.0 ppb (21) N/A N/A N/A N/A N/A 6.0 μg/m3 (25) 44.0
 
Feb. 26, 2021, 3 p.m. 39.9 ppb (38) 18.5 ppb (18) N/A 21.0 ppb (20) N/A N/A N/A N/A N/A 4.0 μg/m3 (17) 38.0
 
Feb. 26, 2021, 2 p.m. 23.2 ppb (22) 11.6 ppb (11) N/A 12.0 ppb (12) N/A N/A N/A N/A N/A 2.0 μg/m3 (9) 22.0
 
Feb. 26, 2021, 1 p.m. 11.9 ppb (12) 6.4 ppb (7) N/A 5.0 ppb (5) N/A N/A N/A N/A N/A 5.0 μg/m3 (21) 21.0
 
Feb. 26, 2021, noon 8.3 ppb (8) 4.7 ppb (5) N/A 4.0 ppb (4) N/A N/A N/A N/A N/A 5.0 μg/m3 (21) 21.0
 
Feb. 26, 2021, 11 a.m. 3.9 ppb (4) 1.8 ppb (2) N/A 2.0 ppb (2) N/A N/A N/A N/A N/A 3.0 μg/m3 (13) 13.0
 
Feb. 26, 2021, 10 a.m. 3.5 ppb (4) 1.4 ppb (2) N/A 2.0 ppb (2) N/A N/A N/A N/A N/A 3.0 μg/m3 (13) 13.0
 
Feb. 26, 2021, 9 a.m. 4.5 ppb (5) 2.2 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
 
Feb. 26, 2021, 8 a.m. 4.6 ppb (5) 1.5 ppb (2) N/A 3.0 ppb (3) N/A N/A N/A N/A N/A 3.0 μg/m3 (13) 13.0
 
Feb. 26, 2021, 7 a.m. 7.4 ppb (7) 2.8 ppb (3) N/A 5.0 ppb (5) N/A N/A N/A N/A N/A 4.0 μg/m3 (17) 17.0
 
Feb. 26, 2021, 6 a.m. 7.0 ppb (7) 3.0 ppb (3) N/A 4.0 ppb (4) N/A N/A N/A N/A N/A 3.0 μg/m3 (13) 13.0
 
Feb. 26, 2021, 5 a.m. 7.9 ppb (8) 3.6 ppb (4) N/A 4.0 ppb (4) N/A N/A N/A N/A N/A 6.0 μg/m3 (25) 25.0
 
Feb. 26, 2021, 4 a.m. 10.3 ppb (10) 5.4 ppb (6) N/A 5.0 ppb (5) N/A N/A N/A N/A N/A 6.0 μg/m3 (25) 25.0
 
Feb. 26, 2021, 3 a.m. 14.1 ppb (14) 6.0 ppb (6) N/A 8.0 ppb (8) N/A N/A N/A N/A N/A 3.0 μg/m3 (13) 14.0
 
Feb. 26, 2021, 2 a.m. 15.4 ppb (15) 7.8 ppb (8) N/A 8.0 ppb (8) N/A N/A N/A N/A N/A 1.0 μg/m3 (5) 15.0
 
Feb. 26, 2021, 1 a.m. 15.3 ppb (15) 8.1 ppb (8) N/A 7.0 ppb (7) N/A N/A N/A N/A N/A 6.0 μg/m3 (25) 25.0
 
Feb. 26, 2021, midnight 17.2 ppb (17) 9.0 ppb (9) N/A 8.0 ppb (8) N/A N/A N/A N/A N/A 10.0 μg/m3 (42) 42.0
 
Feb. 25, 2021, 11 p.m. 15.6 ppb (15) 8.6 ppb (9) N/A 7.0 ppb (7) N/A N/A N/A N/A N/A 9.0 μg/m3 (38) 38.0
 
Feb. 25, 2021, 10 p.m. 15.9 ppb (15) 8.5 ppb (9) N/A 7.0 ppb (7) N/A N/A N/A N/A N/A 5.0 μg/m3 (21) 21.0
 
Feb. 25, 2021, 9 p.m. 16.9 ppb (16) 10.4 ppb (10) N/A 7.0 ppb (7) N/A N/A N/A N/A N/A 7.0 μg/m3 (30) 30.0
 
Feb. 25, 2021, 8 p.m. 18.1 ppb (18) 9.8 ppb (10) N/A 8.0 ppb (8) N/A N/A N/A N/A N/A 4.0 μg/m3 (17) 18.0
 
Feb. 25, 2021, 7 p.m. 18.7 ppb (18) 9.7 ppb (10) N/A 9.0 ppb (9) N/A N/A N/A N/A N/A 6.0 μg/m3 (25) 25.0
 
Feb. 25, 2021, 6 p.m. 26.5 ppb (25) 14.1 ppb (14) N/A 12.0 ppb (12) N/A N/A N/A N/A N/A 7.0 μg/m3 (30) 30.0
 
Feb. 25, 2021, 5 p.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
 
Feb. 25, 2021, 4 p.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
 
Feb. 25, 2021, 3 p.m. 21.7 ppb (21) 10.8 ppb (11) N/A N/A N/A N/A N/A N/A N/A 6.0 μg/m3 (25) 25.0
 
Feb. 25, 2021, 2 p.m. 17.7 ppb (17) 8.9 ppb (9) N/A N/A N/A N/A N/A N/A N/A 1.0 μg/m3 (5) 17.0
 
Feb. 25, 2021, 1 p.m. 19.1 ppb (19) 9.2 ppb (9) N/A N/A N/A N/A N/A N/A N/A 2.0 μg/m3 (9) 19.0
 
Feb. 25, 2021, noon 15.2 ppb (15) 5.7 ppb (6) N/A N/A N/A N/A N/A N/A N/A 2.0 μg/m3 (9) 15.0
 
Feb. 25, 2021, 11 a.m. 8.6 ppb (9) 2.7 ppb (3) N/A N/A N/A N/A N/A N/A N/A 1.0 μg/m3 (5) 9.0
 
Feb. 25, 2021, 10 a.m. 6.1 ppb (6) 1.5 ppb (2) N/A N/A N/A N/A N/A N/A N/A 0.0 μg/m3 (0) 6.0
 
Feb. 25, 2021, 9 a.m. 6.0 ppb (6) 1.8 ppb (2) N/A N/A N/A N/A N/A N/A N/A 3.0 μg/m3 (13) 13.0
 
Feb. 25, 2021, 8 a.m. 16.2 ppb (16) 5.2 ppb (5) N/A N/A N/A N/A N/A N/A N/A 4.0 μg/m3 (17) 17.0
 
Feb. 25, 2021, 7 a.m. 22.1 ppb (21) 8.4 ppb (8) N/A N/A N/A N/A N/A N/A N/A 6.0 μg/m3 (25) 25.0
 
Feb. 25, 2021, 6 a.m. 29.2 ppb (28) 8.6 ppb (9) N/A N/A N/A N/A N/A N/A N/A 9.0 μg/m3 (38) 38.0
 
Feb. 25, 2021, 5 a.m. 19.7 ppb (19) 3.3 ppb (4) N/A N/A N/A N/A N/A N/A N/A 8.0 μg/m3 (34) 34.0
 
Feb. 25, 2021, 4 a.m. 29.9 ppb (29) 3.9 ppb (4) N/A N/A N/A N/A N/A N/A N/A 27.0 μg/m3 (83) 83.0
 
Feb. 25, 2021, 3 a.m. 33.4 ppb (32) 4.6 ppb (5) N/A N/A N/A N/A N/A N/A N/A 17.0 μg/m3 (62) 62.0
 
Feb. 25, 2021, 2 a.m. 25.4 ppb (24) 1.7 ppb (2) N/A N/A N/A N/A N/A N/A N/A 10.0 μg/m3 (42) 42.0
 
Feb. 25, 2021, 1 a.m. 18.3 ppb (18) 1.3 ppb (2) N/A N/A N/A N/A N/A N/A N/A 7.0 μg/m3 (30) 30.0
 
Feb. 25, 2021, midnight 15.6 ppb (15) 2.8 ppb (3) N/A N/A N/A N/A N/A N/A N/A 7.0 μg/m3 (30) 30.0
 
Feb. 24, 2021, 11 p.m. 22.3 ppb (22) 9.2 ppb (9) N/A N/A N/A N/A N/A N/A N/A 8.0 μg/m3 (34) 34.0
 
Feb. 24, 2021, 10 p.m. 17.0 ppb (17) 6.2 ppb (6) N/A N/A N/A N/A N/A N/A N/A 11.0 μg/m3 (46) 46.0
 
Feb. 24, 2021, 9 p.m. 29.0 ppb (28) 15.1 ppb (15) N/A N/A N/A N/A N/A N/A N/A 10.0 μg/m3 (42) 42.0
 
Feb. 24, 2021, 8 p.m. 25.2 ppb (24) 11.5 ppb (11) N/A N/A N/A N/A N/A N/A N/A 12.0 μg/m3 (50) 50.0
 
Feb. 24, 2021, 7 p.m. 30.3 ppb (29) 13.7 ppb (13) N/A N/A N/A N/A N/A N/A N/A 11.0 μg/m3 (46) 46.0
 
Feb. 24, 2021, 6 p.m. 51.5 ppb (49) 29.8 ppb (29) N/A N/A N/A N/A N/A N/A N/A 17.0 μg/m3 (62) 62.0
 
Feb. 24, 2021, 5 p.m. 61.1 ppb (59) 38.6 ppb (37) N/A N/A N/A N/A N/A N/A N/A 11.0 μg/m3 (46) 59.0
 
Feb. 24, 2021, 4 p.m. 111.6 ppb (104) 84.1 ppb (84) N/A N/A N/A N/A N/A N/A N/A 18.0 μg/m3 (64) 104.0
 
Feb. 24, 2021, 3 p.m. 110.9 ppb (103) 82.1 ppb (81) N/A N/A N/A N/A N/A N/A N/A 9.0 μg/m3 (38) 103.0
 
Feb. 24, 2021, 2 p.m. 48.7 ppb (46) 25.8 ppb (25) N/A N/A N/A N/A N/A N/A N/A 8.0 μg/m3 (34) 46.0
 
Feb. 24, 2021, 1 p.m. 34.5 ppb (33) 11.6 ppb (11) N/A N/A N/A N/A N/A N/A N/A 6.0 μg/m3 (25) 33.0
 
Feb. 24, 2021, noon 31.8 ppb (30) 7.6 ppb (8) N/A N/A N/A N/A N/A N/A N/A 8.0 μg/m3 (34) 34.0
 
Feb. 24, 2021, 11 a.m. 46.7 ppb (45) 20.0 ppb (19) N/A N/A N/A N/A N/A N/A N/A 9.0 μg/m3 (38) 45.0
 
Feb. 24, 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
 
Feb. 24, 2021, 9 a.m. 22.5 ppb (22) 3.3 ppb (4) N/A 19.0 ppb (18) N/A N/A N/A N/A N/A 7.0 μg/m3 (30) 30.0
 
Feb. 24, 2021, 8 a.m. 20.8 ppb (20) 1.7 ppb (2) N/A 19.0 ppb (18) N/A N/A N/A N/A N/A 8.0 μg/m3 (34) 34.0
 
Feb. 24, 2021, 7 a.m. 24.5 ppb (24) 5.0 ppb (5) N/A 19.0 ppb (18) N/A N/A N/A N/A N/A 7.0 μg/m3 (30) 30.0
 
Feb. 24, 2021, 6 a.m. 10.8 ppb (11) 0.7 ppb (1) N/A 10.0 ppb (10) N/A N/A N/A N/A N/A 1.0 μg/m3 (5) 11.0
 
Feb. 24, 2021, 5 a.m. 11.4 ppb (11) 2.0 ppb (2) N/A 9.0 ppb (9) N/A N/A N/A N/A N/A 2.0 μg/m3 (9) 11.0
 
Feb. 24, 2021, 4 a.m. 23.6 ppb (23) 9.0 ppb (9) N/A 15.0 ppb (15) N/A N/A N/A N/A N/A 6.0 μg/m3 (25) 25.0
 
Feb. 24, 2021, 3 a.m. 34.3 ppb (33) 13.6 ppb (13) N/A 21.0 ppb (20) N/A N/A N/A N/A N/A 6.0 μg/m3 (25) 33.0
 
Feb. 24, 2021, 2 a.m. 17.8 ppb (17) 9.3 ppb (9) N/A 9.0 ppb (9) N/A N/A N/A N/A N/A 3.0 μg/m3 (13) 17.0
 
Feb. 24, 2021, 1 a.m. 16.3 ppb (16) 9.4 ppb (9) N/A 7.0 ppb (7) N/A N/A N/A N/A N/A 4.0 μg/m3 (17) 17.0
 
Feb. 24, 2021, midnight 17.7 ppb (17) 9.4 ppb (9) N/A 8.0 ppb (8) N/A N/A N/A N/A N/A 5.0 μg/m3 (21) 21.0
 
Feb. 23, 2021, 11 p.m. 15.4 ppb (15) 9.4 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
 
Feb. 23, 2021, 10 p.m. 15.3 ppb (15) 10.0 ppb (10) N/A 5.0 ppb (5) N/A N/A N/A N/A N/A 2.0 μg/m3 (9) 15.0
 
Feb. 23, 2021, 9 p.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
 
Feb. 23, 2021, 8 p.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
 
Feb. 23, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 3.0 μg/m3 (13) 13.0
 
Feb. 23, 2021, 6 p.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
 
Feb. 23, 2021, 5 p.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
 
Feb. 23, 2021, 4 p.m. 21.5 ppb (21) 11.9 ppb (12) N/A 10.0 ppb (10) N/A N/A N/A N/A N/A 2.0 μg/m3 (9) 21.0
 
Feb. 23, 2021, 3 p.m. 19.1 ppb (19) 10.8 ppb (11) N/A 8.0 ppb (8) N/A N/A N/A N/A N/A 3.0 μg/m3 (13) 19.0
 
Feb. 23, 2021, 2 p.m. 16.4 ppb (16) 8.7 ppb (9) N/A 8.0 ppb (8) N/A N/A N/A N/A N/A 4.0 μg/m3 (17) 17.0
 
Feb. 23, 2021, 1 p.m. 12.3 ppb (12) 5.7 ppb (6) N/A 7.0 ppb (7) N/A N/A N/A N/A N/A 2.0 μg/m3 (9) 12.0
 
Feb. 23, 2021, noon 12.1 ppb (12) 5.7 ppb (6) N/A 6.0 ppb (6) N/A N/A N/A N/A N/A 4.0 μg/m3 (17) 17.0
 
Feb. 23, 2021, 11 a.m. 6.5 ppb (7) 2.4 ppb (3) N/A 4.0 ppb (4) N/A N/A N/A N/A N/A 5.0 μg/m3 (21) 21.0
 
Feb. 23, 2021, 10 a.m. 4.3 ppb (5) 1.7 ppb (2) N/A 3.0 ppb (3) N/A N/A N/A N/A N/A 6.0 μg/m3 (25) 25.0
 
Feb. 23, 2021, 9 a.m. 4.2 ppb (4) 1.6 ppb (2) N/A 3.0 ppb (3) N/A N/A N/A N/A N/A 7.0 μg/m3 (30) 30.0
 
Feb. 23, 2021, 8 a.m. 5.2 ppb (5) 2.1 ppb (2) N/A 3.0 ppb (3) N/A N/A N/A N/A N/A 4.0 μg/m3 (17) 17.0
 
Feb. 23, 2021, 7 a.m. 4.5 ppb (5) 2.0 ppb (2) N/A 3.0 ppb (3) N/A N/A N/A N/A N/A 5.0 μg/m3 (21) 21.0
 
Feb. 23, 2021, 6 a.m. 5.2 ppb (5) 2.1 ppb (2) N/A 3.0 ppb (3) N/A N/A N/A N/A N/A 7.0 μg/m3 (30) 30.0
 
Feb. 23, 2021, 5 a.m. 5.4 ppb (6) 2.2 ppb (3) N/A 3.0 ppb (3) N/A N/A N/A N/A N/A 6.0 μg/m3 (25) 25.0
 
Feb. 23, 2021, 4 a.m. 9.4 ppb (9) 4.3 ppb (5) N/A 5.0 ppb (5) N/A N/A N/A N/A N/A 6.0 μg/m3 (25) 25.0
 
Feb. 23, 2021, 3 a.m. 9.0 ppb (9) 4.4 ppb (5) N/A 5.0 ppb (5) N/A N/A N/A N/A N/A 4.0 μg/m3 (17) 17.0
 
Feb. 23, 2021, 2 a.m. 9.7 ppb (10) 4.9 ppb (5) N/A 5.0 ppb (5) N/A N/A N/A N/A N/A 4.0 μg/m3 (17) 17.0
 
Feb. 23, 2021, 1 a.m. 13.5 ppb (13) 6.7 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
 
Feb. 23, 2021, midnight 13.4 ppb (13) 7.0 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
 
Feb. 22, 2021, 11 p.m. 15.5 ppb (15) 9.0 ppb (9) N/A 6.0 ppb (6) N/A N/A N/A N/A N/A 0.0 μg/m3 (0) 15.0
 
Feb. 22, 2021, 10 p.m. 18.5 ppb (18) 10.1 ppb (10) N/A 8.0 ppb (8) N/A N/A N/A N/A N/A N/A 18.0
 
Feb. 22, 2021, 9 p.m. 21.9 ppb (21) 11.9 ppb (12) N/A 10.0 ppb (10) N/A N/A N/A N/A N/A -3.0 μg/m3 (0) 21.0
 
Feb. 22, 2021, 8 p.m. 22.3 ppb (22) 12.0 ppb (12) N/A 10.0 ppb (10) N/A N/A N/A N/A N/A 2.0 μg/m3 (9) 22.0
 
Feb. 22, 2021, 7 p.m. 21.9 ppb (21) 11.8 ppb (12) N/A 10.0 ppb (10) N/A N/A N/A N/A N/A 4.0 μg/m3 (17) 21.0
 
Feb. 22, 2021, 6 p.m. 23.3 ppb (22) 12.4 ppb (12) N/A 11.0 ppb (11) N/A N/A N/A N/A N/A 4.0 μg/m3 (17) 22.0
 
Feb. 22, 2021, 5 p.m. 24.9 ppb (24) 13.0 ppb (13) N/A 12.0 ppb (12) N/A N/A N/A N/A N/A 2.0 μg/m3 (9) 24.0
 
Feb. 22, 2021, 4 p.m. 20.8 ppb (20) 11.3 ppb (11) N/A 10.0 ppb (10) N/A N/A N/A N/A N/A 3.0 μg/m3 (13) 20.0
 
Feb. 22, 2021, 3 p.m. 23.0 ppb (22) 11.0 ppb (11) N/A 12.0 ppb (12) N/A N/A N/A N/A N/A 3.0 μg/m3 (13) 22.0
 
Feb. 22, 2021, 2 p.m. 19.2 ppb (19) 9.7 ppb (10) N/A 9.0 ppb (9) N/A N/A N/A N/A N/A 2.0 μg/m3 (9) 19.0
 
Feb. 22, 2021, 1 p.m. 14.2 ppb (14) 6.7 ppb (7) N/A 8.0 ppb (8) N/A N/A N/A N/A N/A 0.0 μg/m3 (0) 14.0
 
Feb. 22, 2021, noon 8.2 ppb (8) 3.3 ppb (4) N/A 5.0 ppb (5) N/A N/A N/A N/A N/A 0.0 μg/m3 (0) 8.0
 
Feb. 22, 2021, 11 a.m. 5.0 ppb (5) 1.9 ppb (2) N/A 3.0 ppb (3) N/A N/A N/A N/A N/A 1.0 μg/m3 (5) 5.0
 
Feb. 22, 2021, 10 a.m. 5.7 ppb (6) 2.0 ppb (2) N/A 4.0 ppb (4) N/A N/A N/A N/A N/A 4.0 μg/m3 (17) 17.0
 
Feb. 22, 2021, 9 a.m. 4.3 ppb (5) 1.4 ppb (2) N/A 3.0 ppb (3) N/A N/A N/A N/A N/A 3.0 μg/m3 (13) 13.0
 
Feb. 22, 2021, 8 a.m. 3.1 ppb (3) 0.8 ppb (1) N/A 2.0 ppb (2) N/A N/A N/A N/A N/A -1.0 μg/m3 (0) 3.0
 
Feb. 22, 2021, 7 a.m. 6.6 ppb (7) 2.2 ppb (3) N/A 4.0 ppb (4) N/A N/A N/A N/A N/A 1.0 μg/m3 (5) 7.0
 
Feb. 22, 2021, 6 a.m. 7.8 ppb (8) 2.6 ppb (3) N/A 5.0 ppb (5) N/A N/A N/A N/A N/A 2.0 μg/m3 (9) 9.0
 
Feb. 22, 2021, 5 a.m. 8.4 ppb (8) 2.9 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
 
Feb. 22, 2021, 4 a.m. 7.9 ppb (8) 2.4 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
 
Feb. 22, 2021, 3 a.m. 10.1 ppb (10) 3.3 ppb (4) N/A 7.0 ppb (7) N/A N/A N/A N/A N/A 2.0 μg/m3 (9) 10.0
 
Feb. 22, 2021, 2 a.m. 9.9 ppb (10) 4.1 ppb (4) N/A 6.0 ppb (6) N/A N/A N/A N/A N/A 3.0 μg/m3 (13) 13.0
 
Feb. 22, 2021, 1 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
 
Feb. 22, 2021, midnight 11.8 ppb (12) 5.4 ppb (6) N/A 6.0 ppb (6) N/A N/A N/A N/A N/A 1.0 μg/m3 (5) 12.0
 
Feb. 21, 2021, 11 p.m. 9.4 ppb (9) 4.9 ppb (5) N/A 5.0 ppb (5) N/A N/A N/A N/A N/A -1.0 μg/m3 (0) 9.0
 
Feb. 21, 2021, 10 p.m. 9.2 ppb (9) 4.8 ppb (5) N/A 4.0 ppb (4) N/A N/A N/A N/A N/A 1.0 μg/m3 (5) 9.0
 
Feb. 21, 2021, 9 p.m. 11.8 ppb (12) 5.9 ppb (6) N/A 6.0 ppb (6) N/A N/A N/A N/A N/A 1.0 μg/m3 (5) 12.0
 
Feb. 21, 2021, 8 p.m. 11.0 ppb (11) 5.6 ppb (6) N/A 5.0 ppb (5) N/A N/A N/A N/A N/A 0.0 μg/m3 (0) 11.0