ID: 895

AQSQID: 530330080

Site Name: Seattle-Beacon Hill

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

Updated: Oct. 16, 2021, 5:05 a.m.

Location: Seattle (N Beacon Hill), WA

Reporting: True, Located: True

Current AQI: 30.0

Seattle (N Beacon Hill) WA, US: 47.568236, -122.308628

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
Oct. 16, 2021, 3 a.m. N/A 0.2 ppb (1) 13.2 ppb (13) 15.0 ppb (15) N/A 1.0 ppb (2) 25.0 ppb (24) 0.22 ppb (3) N/A 7.0 μg/m3 (30) 30.0
 
Oct. 16, 2021, 2 a.m. N/A 0.1 ppb (1) 8.5 ppb (9) 9.0 ppb (9) N/A 0.0 ppb (0) 30.0 ppb (28) 0.18 ppb (3) N/A 5.0 μg/m3 (21) 28.0
 
Oct. 16, 2021, 1 a.m. N/A 0.0 ppb (0) 8.4 ppb (8) 9.0 ppb (9) N/A 0.0 ppb (0) 30.0 ppb (28) 0.19 ppb (3) N/A 3.0 μg/m3 (13) 28.0
 
Oct. 16, 2021, midnight N/A 0.3 ppb (1) 11.9 ppb (12) 13.0 ppb (13) N/A 0.0 ppb (0) 26.0 ppb (25) 0.22 ppb (3) N/A -1.0 μg/m3 (0) 25.0
 
Oct. 15, 2021, 11 p.m. N/A 0.1 ppb (1) 5.0 ppb (5) 6.0 ppb (6) N/A 0.0 ppb (0) 33.0 ppb (31) 0.18 ppb (3) N/A 2.0 μg/m3 (9) 31.0
 
Oct. 15, 2021, 10 p.m. N/A 0.2 ppb (1) 4.1 ppb (4) 5.0 ppb (5) N/A 0.0 ppb (0) 35.0 ppb (33) 0.17 ppb (3) N/A 3.0 μg/m3 (13) 33.0
 
Oct. 15, 2021, 9 p.m. N/A 0.3 ppb (1) 3.4 ppb (4) 4.0 ppb (4) N/A 0.0 ppb (0) 36.0 ppb (34) 0.15 ppb (2) N/A 4.0 μg/m3 (17) 34.0
 
Oct. 15, 2021, 8 p.m. N/A 0.7 ppb (1) 6.4 ppb (7) 6.0 ppb (6) N/A 0.0 ppb (0) 29.0 ppb (27) 0.16 ppb (3) N/A 2.0 μg/m3 (9) 27.0
 
Oct. 15, 2021, 7 p.m. N/A 2.9 ppb (3) 17.9 ppb (17) 17.0 ppb (17) N/A 1.0 ppb (2) 17.0 ppb (16) 0.23 ppb (3) N/A 2.0 μg/m3 (9) 17.0
 
Oct. 15, 2021, 6 p.m. N/A 3.3 ppb (4) 18.1 ppb (18) 18.0 ppb (17) N/A 1.0 ppb (2) 16.0 ppb (15) 0.23 ppb (3) N/A 4.0 μg/m3 (17) 18.0
 
Oct. 15, 2021, 5 p.m. N/A 2.9 ppb (3) 18.2 ppb (18) 17.0 ppb (17) N/A 1.0 ppb (2) 15.0 ppb (14) 0.23 ppb (3) N/A 5.0 μg/m3 (21) 21.0
 
Oct. 15, 2021, 4 p.m. N/A 3.9 ppb (4) 22.4 ppb (22) 21.0 ppb (20) N/A 1.0 ppb (2) 10.0 ppb (10) 0.25 ppb (3) N/A 3.0 μg/m3 (13) 22.0
 
Oct. 15, 2021, 3 p.m. N/A 2.9 ppb (3) 19.9 ppb (19) 20.0 ppb (19) N/A 0.0 ppb (0) 10.0 ppb (10) 0.24 ppb (3) N/A 2.0 μg/m3 (9) 19.0
 
Oct. 15, 2021, 2 p.m. N/A 1.3 ppb (2) 14.0 ppb (14) 15.0 ppb (15) N/A 0.0 ppb (0) 15.0 ppb (14) 0.22 ppb (3) N/A 5.0 μg/m3 (21) 21.0
 
Oct. 15, 2021, 1 p.m. N/A 0.7 ppb (1) 13.3 ppb (13) 15.0 ppb (15) N/A 0.0 ppb (0) 14.0 ppb (13) 0.2 ppb (3) N/A 5.0 μg/m3 (21) 21.0
 
Oct. 15, 2021, noon N/A N/A N/A N/A N/A 0.0 ppb (0) 17.0 ppb (16) 0.2 ppb (3) N/A 2.0 μg/m3 (9) 16.0
 
Oct. 15, 2021, 11 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 22.0 ppb (21) 0.17 ppb (3) N/A 3.0 μg/m3 (13) 21.0
 
Oct. 15, 2021, 10 a.m. N/A 0.3 ppb (1) 7.2 ppb (7) 8.0 ppb (8) N/A 0.0 ppb (0) 20.0 ppb (19) 0.18 ppb (3) N/A 5.0 μg/m3 (21) 21.0
 
Oct. 15, 2021, 9 a.m. N/A 0.5 ppb (1) 8.6 ppb (9) 9.0 ppb (9) N/A 0.0 ppb (0) 16.0 ppb (15) 0.19 ppb (3) N/A 8.0 μg/m3 (34) 34.0
 
Oct. 15, 2021, 8 a.m. N/A 0.2 ppb (1) 8.1 ppb (8) 9.0 ppb (9) N/A 0.0 ppb (0) 16.0 ppb (15) 0.21 ppb (3) N/A 10.0 μg/m3 (42) 42.0
 
Oct. 15, 2021, 7 a.m. N/A 0.2 ppb (1) 8.5 ppb (9) 10.0 ppb (10) N/A N/A 17.0 ppb (16) 0.19 ppb (3) N/A 5.0 μg/m3 (21) 21.0
 
Oct. 15, 2021, 6 a.m. N/A 0.2 ppb (1) 10.3 ppb (10) 12.0 ppb (12) N/A N/A 16.0 ppb (15) 0.2 ppb (3) N/A 2.0 μg/m3 (9) 15.0
 
Oct. 15, 2021, 5 a.m. N/A 0.1 ppb (1) 7.0 ppb (7) 8.0 ppb (8) N/A 0.0 ppb (0) 18.0 ppb (17) N/A N/A 4.0 μg/m3 (17) 17.0
 
Oct. 15, 2021, 4 a.m. N/A 0.2 ppb (1) 9.4 ppb (9) 11.0 ppb (11) N/A 0.0 ppb (0) 17.0 ppb (16) 0.2 ppb (3) N/A 4.0 μg/m3 (17) 17.0
 
Oct. 15, 2021, 3 a.m. N/A N/A N/A 13.0 ppb (13) N/A 0.0 ppb (0) 17.0 ppb (16) 0.22 ppb (3) N/A 3.0 μg/m3 (13) 16.0
 
Oct. 15, 2021, 2 a.m. N/A 0.3 ppb (1) 8.4 ppb (8) 10.0 ppb (10) N/A 0.0 ppb (0) 21.0 ppb (20) 0.2 ppb (3) N/A 4.0 μg/m3 (17) 20.0
 
Oct. 15, 2021, 1 a.m. N/A 0.2 ppb (1) 6.6 ppb (7) 8.0 ppb (8) N/A 0.0 ppb (0) 23.0 ppb (22) 0.21 ppb (3) N/A 6.0 μg/m3 (25) 25.0
 
Oct. 15, 2021, midnight N/A 0.3 ppb (1) 6.6 ppb (7) 8.0 ppb (8) N/A 0.0 ppb (0) 25.0 ppb (24) 0.21 ppb (3) N/A 7.0 μg/m3 (30) 30.0
 
Oct. 14, 2021, 11 p.m. N/A 0.5 ppb (1) 5.3 ppb (5) 6.0 ppb (6) N/A 0.0 ppb (0) 28.0 ppb (26) 0.2 ppb (3) N/A 1.0 μg/m3 (5) 26.0
 
Oct. 14, 2021, 10 p.m. N/A 0.9 ppb (1) 4.0 ppb (4) 4.0 ppb (4) N/A 0.0 ppb (0) 31.0 ppb (29) 0.16 ppb (3) N/A 2.0 μg/m3 (9) 29.0
 
Oct. 14, 2021, 9 p.m. N/A 0.5 ppb (1) 3.4 ppb (4) 4.0 ppb (4) N/A 0.0 ppb (0) 32.0 ppb (30) 0.16 ppb (3) N/A 1.0 μg/m3 (5) 30.0
 
Oct. 14, 2021, 8 p.m. N/A 0.6 ppb (1) 2.8 ppb (3) 3.0 ppb (3) N/A 0.0 ppb (0) 32.0 ppb (30) 0.15 ppb (2) N/A -4.0 μg/m3 (0) 30.0
 
Oct. 14, 2021, 7 p.m. N/A 0.5 ppb (1) 3.4 ppb (4) 4.0 ppb (4) N/A 0.0 ppb (0) 29.0 ppb (27) 0.16 ppb (3) N/A N/A 27.0
 
Oct. 14, 2021, 6 p.m. N/A 5.0 ppb (5) 17.0 ppb (17) 13.0 ppb (13) N/A 1.0 ppb (2) 15.0 ppb (14) 0.26 ppb (4) N/A 4.0 μg/m3 (17) 17.0
 
Oct. 14, 2021, 5 p.m. N/A 8.9 ppb (9) 26.4 ppb (25) 20.0 ppb (19) N/A 1.0 ppb (2) 6.0 ppb (6) 0.29 ppb (4) N/A 7.0 μg/m3 (30) 30.0
 
Oct. 14, 2021, 4 p.m. N/A 11.0 ppb (11) 29.9 ppb (29) 22.0 ppb (21) N/A 1.0 ppb (2) 4.0 ppb (4) 0.29 ppb (4) N/A 6.0 μg/m3 (25) 29.0
 
Oct. 14, 2021, 3 p.m. N/A 1.7 ppb (2) 12.2 ppb (12) 13.0 ppb (13) N/A 0.0 ppb (0) 11.0 ppb (11) 0.21 ppb (3) N/A 4.0 μg/m3 (17) 17.0
 
Oct. 14, 2021, 2 p.m. N/A 0.2 ppb (1) 5.3 ppb (5) 7.0 ppb (7) N/A 0.0 ppb (0) 17.0 ppb (16) 0.18 ppb (3) N/A 1.0 μg/m3 (5) 16.0
 
Oct. 14, 2021, 1 p.m. N/A 0.0 ppb (0) 1.6 ppb (2) 3.0 ppb (3) N/A 0.0 ppb (0) 22.0 ppb (21) 0.14 ppb (2) N/A -3.0 μg/m3 (0) 21.0
 
Oct. 14, 2021, noon N/A 0.0 ppb (0) 1.5 ppb (2) 2.0 ppb (2) N/A 0.0 ppb (0) 23.0 ppb (22) 0.14 ppb (2) N/A -1.0 μg/m3 (0) 22.0
 
Oct. 14, 2021, 11 a.m. N/A 0.2 ppb (1) 4.0 ppb (4) 4.0 ppb (4) N/A 0.0 ppb (0) 21.0 ppb (20) 0.16 ppb (3) N/A 3.0 μg/m3 (13) 20.0
 
Oct. 14, 2021, 10 a.m. N/A 0.5 ppb (1) 7.3 ppb (7) 8.0 ppb (8) N/A 0.0 ppb (0) N/A 0.16 ppb (3) N/A 4.0 μg/m3 (17) 17.0
 
Oct. 14, 2021, 9 a.m. N/A 0.2 ppb (1) 6.2 ppb (6) 7.0 ppb (7) N/A 0.0 ppb (0) 19.0 ppb (18) 0.17 ppb (3) N/A 5.0 μg/m3 (21) 21.0
 
Oct. 14, 2021, 8 a.m. N/A 0.3 ppb (1) 6.8 ppb (7) 8.0 ppb (8) N/A 0.0 ppb (0) 17.0 ppb (16) 0.2 ppb (3) N/A 9.0 μg/m3 (38) 38.0
 
Oct. 14, 2021, 7 a.m. N/A 0.1 ppb (1) 9.2 ppb (9) 10.0 ppb (10) N/A 0.0 ppb (0) 17.0 ppb (16) 0.23 ppb (3) N/A 9.0 μg/m3 (38) 38.0
 
Oct. 14, 2021, 6 a.m. N/A 0.8 ppb (1) 15.9 ppb (15) 16.0 ppb (16) N/A 0.0 ppb (0) 15.0 ppb (14) 0.25 ppb (3) N/A 5.0 μg/m3 (21) 21.0
 
Oct. 14, 2021, 5 a.m. N/A 0.6 ppb (1) 11.8 ppb (12) 14.0 ppb (14) N/A 0.0 ppb (0) 18.0 ppb (17) 0.22 ppb (3) N/A 6.0 μg/m3 (25) 25.0
 
Oct. 14, 2021, 4 a.m. N/A 0.6 ppb (1) 9.5 ppb (9) 9.0 ppb (9) N/A 0.0 ppb (0) 22.0 ppb (21) 0.24 ppb (3) N/A 7.0 μg/m3 (30) 30.0
 
Oct. 14, 2021, 3 a.m. N/A 3.9 ppb (4) 25.8 ppb (25) 25.0 ppb (24) N/A 1.0 ppb (2) 5.0 ppb (5) 0.34 ppb (4) N/A 8.0 μg/m3 (34) 34.0
 
Oct. 14, 2021, 2 a.m. N/A 0.7 ppb (1) 12.0 ppb (12) 13.0 ppb (13) N/A 0.0 ppb (0) 15.0 ppb (14) 0.29 ppb (4) N/A 6.0 μg/m3 (25) 25.0
 
Oct. 14, 2021, 1 a.m. N/A 0.4 ppb (1) 8.8 ppb (9) 9.0 ppb (9) N/A 0.0 ppb (0) 20.0 ppb (19) 0.28 ppb (4) N/A 5.0 μg/m3 (21) 21.0
 
Oct. 14, 2021, midnight N/A 0.3 ppb (1) 5.3 ppb (5) 6.0 ppb (6) N/A 0.0 ppb (0) 24.0 ppb (23) 0.24 ppb (3) N/A 7.0 μg/m3 (30) 30.0
 
Oct. 13, 2021, 11 p.m. N/A 0.9 ppb (1) 6.4 ppb (7) 6.0 ppb (6) N/A 0.0 ppb (0) 26.0 ppb (25) 0.2 ppb (3) N/A 5.0 μg/m3 (21) 25.0
 
Oct. 13, 2021, 10 p.m. N/A 1.0 ppb (1) 5.9 ppb (6) 6.0 ppb (6) N/A 0.0 ppb (0) 29.0 ppb (27) 0.18 ppb (3) N/A 4.0 μg/m3 (17) 27.0
 
Oct. 13, 2021, 9 p.m. N/A 1.6 ppb (2) 9.0 ppb (9) 8.0 ppb (8) N/A 1.0 ppb (2) 25.0 ppb (24) 0.2 ppb (3) N/A 7.0 μg/m3 (30) 30.0
 
Oct. 13, 2021, 8 p.m. N/A 7.2 ppb (7) 19.9 ppb (19) 13.0 ppb (13) N/A 1.0 ppb (2) 18.0 ppb (17) 0.27 ppb (4) N/A 9.0 μg/m3 (38) 38.0
 
Oct. 13, 2021, 7 p.m. N/A 14.9 ppb (15) 33.0 ppb (32) 20.0 ppb (19) N/A 1.0 ppb (2) 9.0 ppb (9) 0.26 ppb (4) N/A 8.0 μg/m3 (34) 34.0
 
Oct. 13, 2021, 6 p.m. N/A 9.3 ppb (9) 25.1 ppb (24) 17.0 ppb (17) N/A 1.0 ppb (2) 11.0 ppb (11) 0.28 ppb (4) N/A 9.0 μg/m3 (38) 38.0
 
Oct. 13, 2021, 5 p.m. N/A 13.5 ppb (13) 32.3 ppb (31) 20.0 ppb (19) N/A 1.0 ppb (2) 7.0 ppb (7) 0.34 ppb (4) N/A 11.0 μg/m3 (46) 46.0
 
Oct. 13, 2021, 4 p.m. N/A 18.2 ppb (18) 38.3 ppb (37) 22.0 ppb (21) N/A 1.0 ppb (2) 4.0 ppb (4) 0.38 ppb (5) N/A 9.0 μg/m3 (38) 38.0
 
Oct. 13, 2021, 3 p.m. N/A 14.8 ppb (14) 34.6 ppb (33) 22.0 ppb (21) N/A 1.0 ppb (2) 2.0 ppb (2) 0.35 ppb (4) N/A 8.0 μg/m3 (34) 34.0
 
Oct. 13, 2021, 2 p.m. N/A 12.2 ppb (12) 31.1 ppb (30) 21.0 ppb (20) N/A 1.0 ppb (2) 3.0 ppb (3) 0.29 ppb (4) N/A 8.0 μg/m3 (34) 34.0
 
Oct. 13, 2021, 1 p.m. N/A 1.1 ppb (2) 14.8 ppb (14) 15.0 ppb (15) N/A 0.0 ppb (0) 7.0 ppb (7) 0.24 ppb (3) N/A 2.0 μg/m3 (9) 15.0
 
Oct. 13, 2021, noon N/A 1.8 ppb (2) 17.6 ppb (17) 17.0 ppb (17) N/A 0.0 ppb (0) 5.0 ppb (5) 0.24 ppb (3) N/A 2.0 μg/m3 (9) 17.0
 
Oct. 13, 2021, 11 a.m. N/A 0.3 ppb (1) 12.4 ppb (12) 12.0 ppb (12) N/A 0.0 ppb (0) 11.0 ppb (11) 0.21 ppb (3) N/A 5.0 μg/m3 (21) 21.0
 
Oct. 13, 2021, 10 a.m. N/A N/A N/A 11.0 ppb (11) N/A 0.0 ppb (0) 12.0 ppb (12) 0.21 ppb (3) N/A 8.0 μg/m3 (34) 34.0
 
Oct. 13, 2021, 9 a.m. N/A N/A N/A 10.0 ppb (10) N/A 0.0 ppb (0) 14.0 ppb (13) 0.2 ppb (3) N/A 7.0 μg/m3 (30) 30.0
 
Oct. 13, 2021, 8 a.m. N/A 0.1 ppb (1) 4.0 ppb (4) 5.0 ppb (5) N/A 0.0 ppb (0) 18.0 ppb (17) 0.18 ppb (3) N/A 6.0 μg/m3 (25) 25.0
 
Oct. 13, 2021, 7 a.m. N/A 0.0 ppb (0) 4.4 ppb (5) 5.0 ppb (5) N/A 0.0 ppb (0) 20.0 ppb (19) 0.18 ppb (3) N/A 6.0 μg/m3 (25) 25.0
 
Oct. 13, 2021, 6 a.m. N/A 0.0 ppb (0) 5.7 ppb (6) 6.0 ppb (6) N/A 0.0 ppb (0) 21.0 ppb (20) 0.2 ppb (3) N/A 4.0 μg/m3 (17) 20.0
 
Oct. 13, 2021, 5 a.m. N/A 0.0 ppb (0) 8.4 ppb (8) 10.0 ppb (10) N/A 0.0 ppb (0) 20.0 ppb (19) 0.2 ppb (3) N/A 5.0 μg/m3 (21) 21.0
 
Oct. 13, 2021, 4 a.m. N/A 0.3 ppb (1) 13.9 ppb (14) 15.0 ppb (15) N/A 0.0 ppb (0) 15.0 ppb (14) 0.24 ppb (3) N/A 5.0 μg/m3 (21) 21.0
 
Oct. 13, 2021, 3 a.m. N/A 2.0 ppb (2) 21.4 ppb (21) 22.0 ppb (21) N/A 0.0 ppb (0) 9.0 ppb (9) 0.3 ppb (4) N/A 6.0 μg/m3 (25) 25.0
 
Oct. 13, 2021, 2 a.m. N/A 0.8 ppb (1) 14.6 ppb (14) 16.0 ppb (16) N/A 0.0 ppb (0) 15.0 ppb (14) 0.23 ppb (3) N/A 8.0 μg/m3 (34) 34.0
 
Oct. 13, 2021, 1 a.m. N/A 0.0 ppb (0) 3.4 ppb (4) 4.0 ppb (4) N/A 0.0 ppb (0) 29.0 ppb (27) 0.17 ppb (3) N/A 3.0 μg/m3 (13) 27.0
 
Oct. 13, 2021, midnight N/A 0.5 ppb (1) 8.3 ppb (8) 8.0 ppb (8) N/A 0.0 ppb (0) 22.0 ppb (21) 0.23 ppb (3) N/A 5.0 μg/m3 (21) 21.0
 
Oct. 12, 2021, 11 p.m. N/A 1.4 ppb (2) 10.4 ppb (10) 10.0 ppb (10) N/A 1.0 ppb (2) 15.0 ppb (14) 0.28 ppb (4) N/A 6.0 μg/m3 (25) 25.0
 
Oct. 12, 2021, 10 p.m. N/A 2.5 ppb (3) 12.7 ppb (12) 11.0 ppb (11) N/A 0.0 ppb (0) 13.0 ppb (13) 0.25 ppb (3) N/A 8.0 μg/m3 (34) 34.0
 
Oct. 12, 2021, 9 p.m. N/A 4.2 ppb (4) 15.8 ppb (15) 13.0 ppb (13) N/A 1.0 ppb (2) 13.0 ppb (13) 0.24 ppb (3) N/A 4.0 μg/m3 (17) 17.0
 
Oct. 12, 2021, 8 p.m. N/A 5.1 ppb (5) 16.2 ppb (16) 12.0 ppb (12) N/A 1.0 ppb (2) 14.0 ppb (13) 0.23 ppb (3) N/A 1.0 μg/m3 (5) 16.0
 
Oct. 12, 2021, 7 p.m. N/A 8.9 ppb (9) 21.4 ppb (21) 14.0 ppb (14) N/A 1.0 ppb (2) 11.0 ppb (11) 0.26 ppb (4) N/A -1.0 μg/m3 (0) 21.0
 
Oct. 12, 2021, 6 p.m. N/A 9.0 ppb (9) 18.6 ppb (18) 11.0 ppb (11) N/A 1.0 ppb (2) 10.0 ppb (10) 0.24 ppb (3) N/A 2.0 μg/m3 (9) 18.0
 
Oct. 12, 2021, 5 p.m. N/A 19.2 ppb (19) 32.4 ppb (31) 15.0 ppb (15) N/A 1.0 ppb (2) 6.0 ppb (6) 0.29 ppb (4) N/A 4.0 μg/m3 (17) 31.0
 
Oct. 12, 2021, 4 p.m. N/A 6.4 ppb (7) 14.5 ppb (14) 10.0 ppb (10) N/A 0.0 ppb (0) 8.0 ppb (8) 0.2 ppb (3) N/A 3.0 μg/m3 (13) 14.0
 
Oct. 12, 2021, 3 p.m. N/A 6.8 ppb (7) 15.4 ppb (15) 10.0 ppb (10) N/A 0.0 ppb (0) 6.0 ppb (6) 0.2 ppb (3) N/A 2.0 μg/m3 (9) 15.0
 
Oct. 12, 2021, 2 p.m. N/A 4.4 ppb (5) 12.5 ppb (12) 9.0 ppb (9) N/A 0.0 ppb (0) 6.0 ppb (6) 0.18 ppb (3) N/A 3.0 μg/m3 (13) 13.0
 
Oct. 12, 2021, 1 p.m. N/A 4.2 ppb (4) 12.7 ppb (12) 10.0 ppb (10) N/A 0.0 ppb (0) 4.0 ppb (4) 0.2 ppb (3) N/A 3.0 μg/m3 (13) 13.0
 
Oct. 12, 2021, noon N/A 7.0 ppb (7) 16.4 ppb (16) 11.0 ppb (11) N/A 0.0 ppb (0) 3.0 ppb (3) 0.24 ppb (3) N/A 0.0 μg/m3 (0) 16.0
 
Oct. 12, 2021, 11 a.m. N/A 2.4 ppb (3) 7.9 ppb (8) 7.0 ppb (7) N/A 0.0 ppb (0) N/A 0.19 ppb (3) N/A 0.0 μg/m3 (0) 8.0
 
Oct. 12, 2021, 10 a.m. N/A 2.0 ppb (2) 8.0 ppb (8) 7.0 ppb (7) N/A 0.0 ppb (0) N/A 0.19 ppb (3) N/A 2.0 μg/m3 (9) 9.0
 
Oct. 12, 2021, 9 a.m. N/A 2.0 ppb (2) 8.7 ppb (9) 8.0 ppb (8) N/A 0.0 ppb (0) 7.0 ppb (7) 0.19 ppb (3) N/A 3.0 μg/m3 (13) 13.0
 
Oct. 12, 2021, 8 a.m. N/A 2.3 ppb (3) 12.4 ppb (12) 11.0 ppb (11) N/A 0.0 ppb (0) 5.0 ppb (5) 0.25 ppb (3) N/A 4.0 μg/m3 (17) 17.0
 
Oct. 12, 2021, 7 a.m. N/A 3.4 ppb (4) 14.7 ppb (14) 13.0 ppb (13) N/A 0.0 ppb (0) 4.0 ppb (4) 0.26 ppb (4) N/A 7.0 μg/m3 (30) 30.0
 
Oct. 12, 2021, 6 a.m. N/A 1.2 ppb (2) 8.0 ppb (8) 8.0 ppb (8) N/A 0.0 ppb (0) 9.0 ppb (9) 0.21 ppb (3) N/A 7.0 μg/m3 (30) 30.0
 
Oct. 12, 2021, 5 a.m. N/A 0.8 ppb (1) 9.8 ppb (10) 10.0 ppb (10) N/A 0.0 ppb (0) 14.0 ppb (13) 0.25 ppb (3) N/A 3.0 μg/m3 (13) 13.0
 
Oct. 12, 2021, 4 a.m. N/A 0.9 ppb (1) 10.7 ppb (11) 10.0 ppb (10) N/A 0.0 ppb (0) 19.0 ppb (18) 0.3 ppb (4) N/A 4.0 μg/m3 (17) 18.0
 
Oct. 12, 2021, 3 a.m. N/A 0.7 ppb (1) 10.8 ppb (11) 11.0 ppb (11) N/A 0.0 ppb (0) 21.0 ppb (20) 0.26 ppb (4) N/A 6.0 μg/m3 (25) 25.0
 
Oct. 12, 2021, 2 a.m. N/A 2.3 ppb (3) 19.1 ppb (19) 17.0 ppb (17) N/A 0.0 ppb (0) 14.0 ppb (13) 0.36 ppb (5) N/A 6.0 μg/m3 (25) 25.0
 
Oct. 12, 2021, 1 a.m. N/A 0.7 ppb (1) 10.3 ppb (10) 11.0 ppb (11) N/A 0.0 ppb (0) 21.0 ppb (20) 0.18 ppb (3) N/A 2.0 μg/m3 (9) 20.0
 
Oct. 12, 2021, midnight N/A 1.2 ppb (2) 8.1 ppb (8) 8.0 ppb (8) N/A 0.0 ppb (0) 26.0 ppb (25) 0.14 ppb (2) N/A -3.0 μg/m3 (0) 25.0
 
Oct. 11, 2021, 11 p.m. N/A 1.3 ppb (2) 5.7 ppb (6) 5.0 ppb (5) N/A 0.0 ppb (0) 28.0 ppb (26) 0.16 ppb (3) N/A -1.0 μg/m3 (0) 26.0
 
Oct. 11, 2021, 10 p.m. N/A 0.9 ppb (1) 4.0 ppb (4) 4.0 ppb (4) N/A 0.0 ppb (0) 26.0 ppb (25) 0.16 ppb (3) N/A 3.0 μg/m3 (13) 25.0
 
Oct. 11, 2021, 9 p.m. N/A 0.8 ppb (1) 3.5 ppb (4) 4.0 ppb (4) N/A 0.0 ppb (0) 27.0 ppb (25) 0.16 ppb (3) N/A 4.0 μg/m3 (17) 25.0
 
Oct. 11, 2021, 8 p.m. N/A 1.8 ppb (2) 5.9 ppb (6) 5.0 ppb (5) N/A 0.0 ppb (0) 26.0 ppb (25) 0.16 ppb (3) N/A 1.0 μg/m3 (5) 25.0
 
Oct. 11, 2021, 7 p.m. N/A 3.7 ppb (4) 10.8 ppb (11) 8.0 ppb (8) N/A 0.0 ppb (0) 22.0 ppb (21) 0.15 ppb (2) N/A 1.0 μg/m3 (5) 21.0
 
Oct. 11, 2021, 6 p.m. N/A 6.8 ppb (7) 17.8 ppb (17) 13.0 ppb (13) N/A 0.0 ppb (0) 16.0 ppb (15) 0.19 ppb (3) N/A 3.0 μg/m3 (13) 17.0
 
Oct. 11, 2021, 5 p.m. N/A 6.0 ppb (6) 19.1 ppb (19) 14.0 ppb (14) N/A 0.0 ppb (0) N/A 0.27 ppb (4) N/A 6.0 μg/m3 (25) 25.0
 
Oct. 11, 2021, 4 p.m. N/A 11.6 ppb (11) 26.1 ppb (25) 16.0 ppb (16) N/A 0.0 ppb (0) N/A 0.31 ppb (4) N/A 6.0 μg/m3 (25) 25.0
 
Oct. 11, 2021, 3 p.m. N/A 15.9 ppb (15) 33.6 ppb (32) 19.0 ppb (18) N/A 1.0 ppb (2) 2.0 ppb (2) 0.32 ppb (4) N/A 3.0 μg/m3 (13) 32.0
 
Oct. 11, 2021, 2 p.m. N/A 11.1 ppb (11) 31.6 ppb (30) 23.0 ppb (22) N/A 0.0 ppb (0) 1.0 ppb (1) 0.27 ppb (4) N/A 3.0 μg/m3 (13) 30.0
 
Oct. 11, 2021, 1 p.m. N/A 8.3 ppb (8) 24.1 ppb (23) 19.0 ppb (18) N/A 0.0 ppb (0) 4.0 ppb (4) 0.27 ppb (4) N/A 2.0 μg/m3 (9) 23.0
 
Oct. 11, 2021, noon N/A N/A N/A N/A N/A 0.0 ppb (0) 13.0 ppb (13) 0.18 ppb (3) N/A 4.0 μg/m3 (17) 17.0
 
Oct. 11, 2021, 11 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 9.0 ppb (9) 0.17 ppb (3) N/A 5.0 μg/m3 (21) 21.0
 
Oct. 11, 2021, 10 a.m. N/A 0.3 ppb (1) 13.7 ppb (13) 15.0 ppb (15) N/A 0.0 ppb (0) 11.0 ppb (11) 0.17 ppb (3) N/A 3.0 μg/m3 (13) 15.0
 
Oct. 11, 2021, 9 a.m. N/A 0.0 ppb (0) 12.1 ppb (12) 14.0 ppb (14) N/A 0.0 ppb (0) 12.0 ppb (12) 0.18 ppb (3) N/A 3.0 μg/m3 (13) 14.0
 
Oct. 11, 2021, 8 a.m. N/A 0.0 ppb (0) 10.1 ppb (10) 11.0 ppb (11) N/A 0.0 ppb (0) 16.0 ppb (15) 0.18 ppb (3) N/A 3.0 μg/m3 (13) 15.0
 
Oct. 11, 2021, 7 a.m. N/A 0.1 ppb (1) 9.6 ppb (10) 11.0 ppb (11) N/A N/A 15.0 ppb (14) 0.19 ppb (3) N/A 4.0 μg/m3 (17) 17.0
 
Oct. 11, 2021, 6 a.m. N/A 0.1 ppb (1) 4.9 ppb (5) 6.0 ppb (6) N/A N/A 20.0 ppb (19) 0.16 ppb (3) N/A 3.0 μg/m3 (13) 19.0
 
Oct. 11, 2021, 5 a.m. N/A 0.1 ppb (1) 3.2 ppb (4) 4.0 ppb (4) N/A 0.0 ppb (0) 23.0 ppb (22) N/A N/A 3.0 μg/m3 (13) 22.0
 
Oct. 11, 2021, 4 a.m. N/A 0.5 ppb (1) 8.5 ppb (9) 9.0 ppb (9) N/A 0.0 ppb (0) 19.0 ppb (18) 0.23 ppb (3) N/A 4.0 μg/m3 (17) 18.0
 
Oct. 11, 2021, 3 a.m. N/A N/A N/A 10.0 ppb (10) N/A 0.0 ppb (0) 17.0 ppb (16) 0.22 ppb (3) N/A 4.0 μg/m3 (17) 17.0
 
Oct. 11, 2021, 2 a.m. N/A 0.2 ppb (1) 4.4 ppb (5) 5.0 ppb (5) N/A 0.0 ppb (0) 21.0 ppb (20) 0.2 ppb (3) N/A 5.0 μg/m3 (21) 21.0
 
Oct. 11, 2021, 1 a.m. N/A 0.3 ppb (1) 6.9 ppb (7) 8.0 ppb (8) N/A 0.0 ppb (0) 18.0 ppb (17) 0.22 ppb (3) N/A 7.0 μg/m3 (30) 30.0
 
Oct. 11, 2021, midnight N/A 0.3 ppb (1) 3.8 ppb (4) 5.0 ppb (5) N/A 0.0 ppb (0) 26.0 ppb (25) 0.2 ppb (3) N/A 4.0 μg/m3 (17) 25.0
 
Oct. 10, 2021, 11 p.m. N/A 0.4 ppb (1) 2.2 ppb (3) 3.0 ppb (3) N/A 0.0 ppb (0) 27.0 ppb (25) 0.16 ppb (3) N/A 4.0 μg/m3 (17) 25.0
 
Oct. 10, 2021, 10 p.m. N/A 0.4 ppb (1) 2.6 ppb (3) 3.0 ppb (3) N/A 0.0 ppb (0) 28.0 ppb (26) 0.19 ppb (3) N/A 4.0 μg/m3 (17) 26.0
 
Oct. 10, 2021, 9 p.m. N/A 0.6 ppb (1) 2.7 ppb (3) 3.0 ppb (3) N/A 0.0 ppb (0) 28.0 ppb (26) 0.16 ppb (3) N/A -1.0 μg/m3 (0) 26.0
 
Oct. 10, 2021, 8 p.m. N/A 1.7 ppb (2) 5.2 ppb (5) 4.0 ppb (4) N/A 0.0 ppb (0) 26.0 ppb (25) 0.15 ppb (2) N/A -2.0 μg/m3 (0) 25.0
 
Oct. 10, 2021, 7 p.m. N/A 1.0 ppb (1) 3.4 ppb (4) 3.0 ppb (3) N/A 0.0 ppb (0) 26.0 ppb (25) 0.17 ppb (3) N/A 3.0 μg/m3 (13) 25.0
 
Oct. 10, 2021, 6 p.m. N/A 0.5 ppb (1) 2.1 ppb (2) 2.0 ppb (2) N/A 0.0 ppb (0) 27.0 ppb (25) 0.16 ppb (3) N/A 3.0 μg/m3 (13) 25.0
 
Oct. 10, 2021, 5 p.m. N/A 0.3 ppb (1) 1.8 ppb (2) 3.0 ppb (3) N/A 0.0 ppb (0) 28.0 ppb (26) 0.15 ppb (2) N/A 3.0 μg/m3 (13) 26.0
 
Oct. 10, 2021, 4 p.m. N/A 0.4 ppb (1) 3.0 ppb (3) 4.0 ppb (4) N/A 0.0 ppb (0) 26.0 ppb (25) 0.16 ppb (3) N/A 3.0 μg/m3 (13) 25.0
 
Oct. 10, 2021, 3 p.m. N/A 0.3 ppb (1) 2.5 ppb (3) 3.0 ppb (3) N/A 0.0 ppb (0) 27.0 ppb (25) 0.14 ppb (2) N/A 4.0 μg/m3 (17) 25.0
 
Oct. 10, 2021, 2 p.m. N/A 0.0 ppb (0) 0.9 ppb (1) 2.0 ppb (2) N/A 0.0 ppb (0) 29.0 ppb (27) 0.15 ppb (2) N/A 5.0 μg/m3 (21) 27.0
 
Oct. 10, 2021, 1 p.m. N/A 0.0 ppb (0) 0.4 ppb (1) 1.0 ppb (1) N/A 0.0 ppb (0) 33.0 ppb (31) 0.14 ppb (2) N/A 3.0 μg/m3 (13) 31.0
 
Oct. 10, 2021, noon N/A N/A N/A N/A N/A 0.0 ppb (0) 34.0 ppb (32) 0.14 ppb (2) N/A 2.0 μg/m3 (9) 32.0
 
Oct. 10, 2021, 11 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 33.0 ppb (31) 0.13 ppb (2) N/A 5.0 μg/m3 (21) 31.0
 
Oct. 10, 2021, 10 a.m. N/A 0.0 ppb (0) 0.6 ppb (1) 1.0 ppb (1) N/A 0.0 ppb (0) N/A 0.14 ppb (2) N/A 7.0 μg/m3 (30) 30.0
 
Oct. 10, 2021, 9 a.m. N/A 0.0 ppb (0) 1.1 ppb (2) 2.0 ppb (2) N/A 0.0 ppb (0) 26.0 ppb (25) 0.16 ppb (3) N/A 5.0 μg/m3 (21) 25.0
 
Oct. 10, 2021, 8 a.m. N/A 0.2 ppb (1) 3.3 ppb (4) 4.0 ppb (4) N/A 0.0 ppb (0) 22.0 ppb (21) 0.18 ppb (3) N/A 3.0 μg/m3 (13) 21.0
 
Oct. 10, 2021, 7 a.m. N/A 0.0 ppb (0) 3.9 ppb (4) 5.0 ppb (5) N/A 0.0 ppb (0) 20.0 ppb (19) 0.18 ppb (3) N/A 4.0 μg/m3 (17) 19.0
 
Oct. 10, 2021, 6 a.m. N/A 0.3 ppb (1) 6.2 ppb (6) 7.0 ppb (7) N/A 0.0 ppb (0) 21.0 ppb (20) 0.19 ppb (3) N/A 3.0 μg/m3 (13) 20.0
 
Oct. 10, 2021, 5 a.m. N/A 0.2 ppb (1) 5.5 ppb (6) 7.0 ppb (7) N/A 0.0 ppb (0) 22.0 ppb (21) 0.18 ppb (3) N/A 4.0 μg/m3 (17) 21.0
 
Oct. 10, 2021, 4 a.m. N/A 0.0 ppb (0) 1.7 ppb (2) 3.0 ppb (3) N/A 0.0 ppb (0) 26.0 ppb (25) 0.17 ppb (3) N/A 6.0 μg/m3 (25) 25.0
 
Oct. 10, 2021, 3 a.m. N/A 0.1 ppb (1) 8.0 ppb (8) 9.0 ppb (9) N/A 0.0 ppb (0) 19.0 ppb (18) 0.2 ppb (3) N/A 9.0 μg/m3 (38) 38.0
 
Oct. 10, 2021, 2 a.m. N/A 0.2 ppb (1) 6.8 ppb (7) 8.0 ppb (8) N/A 0.0 ppb (0) 19.0 ppb (18) 0.23 ppb (3) N/A 9.0 μg/m3 (38) 38.0
 
Oct. 10, 2021, 1 a.m. N/A 0.1 ppb (1) 6.4 ppb (7) 7.0 ppb (7) N/A 0.0 ppb (0) 20.0 ppb (19) 0.24 ppb (3) N/A 6.0 μg/m3 (25) 25.0
 
Oct. 10, 2021, midnight N/A 0.2 ppb (1) 6.0 ppb (6) 7.0 ppb (7) N/A 0.0 ppb (0) 21.0 ppb (20) 0.22 ppb (3) N/A 6.0 μg/m3 (25) 25.0
 
Oct. 9, 2021, 11 p.m. N/A 0.2 ppb (1) 3.4 ppb (4) 4.0 ppb (4) N/A 0.0 ppb (0) 26.0 ppb (25) 0.19 ppb (3) N/A 4.0 μg/m3 (17) 25.0
 
Oct. 9, 2021, 10 p.m. N/A 0.5 ppb (1) 3.3 ppb (4) 4.0 ppb (4) N/A 0.0 ppb (0) 24.0 ppb (23) 0.19 ppb (3) N/A 4.0 μg/m3 (17) 23.0
 
Oct. 9, 2021, 9 p.m. N/A 0.6 ppb (1) 3.6 ppb (4) 4.0 ppb (4) N/A 0.0 ppb (0) 23.0 ppb (22) 0.2 ppb (3) N/A 6.0 μg/m3 (25) 25.0
 
Oct. 9, 2021, 8 p.m. N/A 0.9 ppb (1) 4.8 ppb (5) 4.0 ppb (4) N/A 0.0 ppb (0) 20.0 ppb (19) 0.21 ppb (3) N/A 6.0 μg/m3 (25) 25.0
 
Oct. 9, 2021, 7 p.m. N/A 1.7 ppb (2) 7.0 ppb (7) 6.0 ppb (6) N/A 0.0 ppb (0) 21.0 ppb (20) 0.22 ppb (3) N/A 6.0 μg/m3 (25) 25.0
 
Oct. 9, 2021, 6 p.m. N/A 3.7 ppb (4) 13.6 ppb (13) 11.0 ppb (11) N/A 1.0 ppb (2) 12.0 ppb (12) 0.27 ppb (4) N/A 7.0 μg/m3 (30) 30.0
 
Oct. 9, 2021, 5 p.m. N/A 4.0 ppb (4) 13.6 ppb (13) 11.0 ppb (11) N/A 1.0 ppb (2) 10.0 ppb (10) 0.27 ppb (4) N/A 6.0 μg/m3 (25) 25.0
 
Oct. 9, 2021, 4 p.m. N/A 2.8 ppb (3) 9.3 ppb (9) 8.0 ppb (8) N/A 0.0 ppb (0) 8.0 ppb (8) 0.25 ppb (3) N/A 7.0 μg/m3 (30) 30.0
 
Oct. 9, 2021, 3 p.m. N/A 3.0 ppb (3) 10.9 ppb (11) 9.0 ppb (9) N/A 0.0 ppb (0) 6.0 ppb (6) 0.22 ppb (3) N/A 6.0 μg/m3 (25) 25.0
 
Oct. 9, 2021, 2 p.m. N/A 2.5 ppb (3) 11.5 ppb (11) 10.0 ppb (10) N/A 0.0 ppb (0) 8.0 ppb (8) 0.2 ppb (3) N/A 6.0 μg/m3 (25) 25.0
 
Oct. 9, 2021, 1 p.m. N/A 0.9 ppb (1) 8.0 ppb (8) 8.0 ppb (8) N/A 0.0 ppb (0) 8.0 ppb (8) 0.2 ppb (3) N/A 8.0 μg/m3 (34) 34.0
 
Oct. 9, 2021, noon N/A 1.2 ppb (2) 8.1 ppb (8) 8.0 ppb (8) N/A 0.0 ppb (0) 9.0 ppb (9) 0.22 ppb (3) N/A 6.0 μg/m3 (25) 25.0
 
Oct. 9, 2021, 11 a.m. N/A 0.6 ppb (1) 6.7 ppb (7) 7.0 ppb (7) N/A 0.0 ppb (0) 9.0 ppb (9) 0.21 ppb (3) N/A 6.0 μg/m3 (25) 25.0
 
Oct. 9, 2021, 10 a.m. N/A 0.7 ppb (1) 8.5 ppb (9) 9.0 ppb (9) N/A 0.0 ppb (0) 7.0 ppb (7) 0.23 ppb (3) N/A 8.0 μg/m3 (34) 34.0
 
Oct. 9, 2021, 9 a.m. N/A 1.0 ppb (1) 10.2 ppb (10) 10.0 ppb (10) N/A 0.0 ppb (0) 6.0 ppb (6) 0.25 ppb (3) N/A 7.0 μg/m3 (30) 30.0
 
Oct. 9, 2021, 8 a.m. N/A 0.1 ppb (1) 8.4 ppb (8) 9.0 ppb (9) N/A 0.0 ppb (0) 9.0 ppb (9) 0.26 ppb (4) N/A 10.0 μg/m3 (42) 42.0
 
Oct. 9, 2021, 7 a.m. N/A 2.3 ppb (3) 16.7 ppb (16) 16.0 ppb (16) N/A 0.0 ppb (0) 5.0 ppb (5) 0.35 ppb (4) N/A 10.0 μg/m3 (42) 42.0
 
Oct. 9, 2021, 6 a.m. N/A 1.1 ppb (2) 11.4 ppb (11) 12.0 ppb (12) N/A 0.0 ppb (0) 10.0 ppb (10) 0.29 ppb (4) N/A 13.0 μg/m3 (53) 53.0
 
Oct. 9, 2021, 5 a.m. N/A 0.1 ppb (1) 6.5 ppb (7) 7.0 ppb (7) N/A 0.0 ppb (0) 18.0 ppb (17) 0.26 ppb (4) N/A 8.0 μg/m3 (34) 34.0
 
Oct. 9, 2021, 4 a.m. N/A 2.4 ppb (3) 20.2 ppb (20) 17.0 ppb (17) N/A 1.0 ppb (2) 12.0 ppb (12) 0.44 ppb (5) N/A 10.0 μg/m3 (42) 42.0