ID: 1892

AQSQID: 060010011

Site Name: Oakland West

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

Updated: Oct. 22, 2021, 4:08 p.m.

Location: Oakland (Ralph Bunche), CA

Reporting: True, Located: True

Current AQI: 26.0

Oakland (Ralph Bunche) CA, US: 37.8148, -122.282402

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
Oct. 22, 2021, 2 p.m. 10.4 ppb (10) 0.2 ppb (1) N/A 10.0 ppb (10) N/A 0.0 ppb (0) 28.0 ppb (26) 0.21 ppb (3) N/A 1.0 μg/m3 (5) 26.0
 
Oct. 22, 2021, 1 p.m. 4.1 ppb (4) 0.1 ppb (1) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 35.0 ppb (33) 0.19 ppb (3) N/A 1.0 μg/m3 (5) 33.0
 
Oct. 22, 2021, noon 3.6 ppb (4) 0.1 ppb (1) N/A 4.0 ppb (4) N/A N/A 35.0 ppb (33) 0.18 ppb (3) N/A 1.0 μg/m3 (5) 33.0
 
Oct. 22, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A -1.0 μg/m3 (0) 0.0
Oct. 22, 2021, 10 a.m. 2.0 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 20.0 ppb (19) 0.2 ppb (3) N/A 0.0 μg/m3 (0) 19.0
 
Oct. 22, 2021, 9 a.m. 1.8 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 21.0 ppb (20) 0.2 ppb (3) N/A 0.0 μg/m3 (0) 20.0
 
Oct. 22, 2021, 8 a.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 22.0 ppb (21) 0.19 ppb (3) N/A N/A 21.0
 
Oct. 22, 2021, 7 a.m. 1.7 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 22.0 ppb (21) 0.21 ppb (3) N/A N/A 21.0
 
Oct. 22, 2021, 6 a.m. 3.9 ppb (4) 0.0 ppb (0) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 19.0 ppb (18) 0.23 ppb (3) N/A -4.0 μg/m3 (0) 18.0
 
Oct. 22, 2021, 5 a.m. 4.8 ppb (5) 0.0 ppb (0) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 18.0 ppb (17) 0.22 ppb (3) N/A -2.0 μg/m3 (0) 17.0
 
Oct. 22, 2021, 4 a.m. 5.6 ppb (6) 0.1 ppb (1) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 16.0 ppb (15) 0.24 ppb (3) N/A -1.0 μg/m3 (0) 15.0
 
Oct. 22, 2021, 3 a.m. 4.6 ppb (5) 0.1 ppb (1) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 18.0 ppb (17) 0.25 ppb (3) N/A -1.0 μg/m3 (0) 17.0
 
Oct. 22, 2021, 2 a.m. 5.4 ppb (6) 0.1 ppb (1) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 18.0 ppb (17) 0.26 ppb (4) N/A -1.0 μg/m3 (0) 17.0
 
Oct. 22, 2021, 1 a.m. 5.9 ppb (6) 0.2 ppb (1) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 18.0 ppb (17) 0.26 ppb (4) N/A -1.0 μg/m3 (0) 17.0
 
Oct. 22, 2021, midnight 6.7 ppb (7) 0.6 ppb (1) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 18.0 ppb (17) 0.26 ppb (4) N/A 1.0 μg/m3 (5) 17.0
 
Oct. 21, 2021, 11 p.m. 7.9 ppb (8) 1.4 ppb (2) N/A 7.0 ppb (7) N/A 0.0 ppb (0) 18.0 ppb (17) 0.26 ppb (4) N/A 1.0 μg/m3 (5) 17.0
 
Oct. 21, 2021, 10 p.m. 6.1 ppb (6) 0.9 ppb (1) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 19.0 ppb (18) 0.24 ppb (3) N/A -3.0 μg/m3 (0) 18.0
 
Oct. 21, 2021, 9 p.m. 6.8 ppb (7) 1.0 ppb (1) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 18.0 ppb (17) 0.25 ppb (3) N/A -1.0 μg/m3 (0) 17.0
 
Oct. 21, 2021, 8 p.m. 7.2 ppb (7) 1.0 ppb (1) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 20.0 ppb (19) 0.26 ppb (4) N/A -1.0 μg/m3 (0) 19.0
 
Oct. 21, 2021, 7 p.m. 4.1 ppb (4) 0.7 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 22.0 ppb (21) 0.26 ppb (4) N/A -2.0 μg/m3 (0) 21.0
 
Oct. 21, 2021, 6 p.m. 6.8 ppb (7) 2.1 ppb (2) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 19.0 ppb (18) 0.26 ppb (4) N/A -1.0 μg/m3 (0) 18.0
 
Oct. 21, 2021, 5 p.m. 11.4 ppb (11) 2.3 ppb (3) N/A 9.0 ppb (9) N/A 0.0 ppb (0) 14.0 ppb (13) 0.3 ppb (4) N/A -3.0 μg/m3 (0) 13.0
 
Oct. 21, 2021, 4 p.m. 11.8 ppb (12) 1.4 ppb (2) N/A 10.0 ppb (10) N/A 0.0 ppb (0) 13.0 ppb (13) 0.3 ppb (4) N/A -2.0 μg/m3 (0) 13.0
 
Oct. 21, 2021, 3 p.m. 9.5 ppb (9) 0.7 ppb (1) N/A 9.0 ppb (9) N/A 0.0 ppb (0) 14.0 ppb (13) 0.28 ppb (4) N/A 0.0 μg/m3 (0) 13.0
 
Oct. 21, 2021, 2 p.m. 10.5 ppb (10) 0.4 ppb (1) N/A 10.0 ppb (10) N/A 0.0 ppb (0) 12.0 ppb (12) 0.27 ppb (4) N/A 2.0 μg/m3 (9) 12.0
 
Oct. 21, 2021, 1 p.m. 7.8 ppb (8) 0.9 ppb (1) N/A 7.0 ppb (7) N/A 0.0 ppb (0) 16.0 ppb (15) 0.21 ppb (3) N/A 3.0 μg/m3 (13) 15.0
 
Oct. 21, 2021, noon 6.1 ppb (6) 0.1 ppb (1) N/A 6.0 ppb (6) N/A N/A 16.0 ppb (15) 0.2 ppb (3) N/A -2.0 μg/m3 (0) 15.0
 
Oct. 21, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A -4.0 μg/m3 (0) 0.0
Oct. 21, 2021, 10 a.m. 4.8 ppb (5) 0.1 ppb (1) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 19.0 ppb (18) 0.22 ppb (3) N/A 0.0 μg/m3 (0) 18.0
 
Oct. 21, 2021, 9 a.m. 6.8 ppb (7) 0.0 ppb (0) N/A 7.0 ppb (7) N/A 0.0 ppb (0) 17.0 ppb (16) 0.23 ppb (3) N/A -1.0 μg/m3 (0) 16.0
 
Oct. 21, 2021, 8 a.m. 7.4 ppb (7) 0.1 ppb (1) N/A 7.0 ppb (7) N/A 0.0 ppb (0) 17.0 ppb (16) 0.24 ppb (3) N/A -3.0 μg/m3 (0) 16.0
 
Oct. 21, 2021, 7 a.m. 7.4 ppb (7) 0.0 ppb (0) N/A 7.0 ppb (7) N/A 0.0 ppb (0) 16.0 ppb (15) 0.25 ppb (3) N/A -2.0 μg/m3 (0) 15.0
 
Oct. 21, 2021, 6 a.m. 7.2 ppb (7) 0.1 ppb (1) N/A 7.0 ppb (7) N/A 0.0 ppb (0) 15.0 ppb (14) 0.27 ppb (4) N/A -1.0 μg/m3 (0) 14.0
 
Oct. 21, 2021, 5 a.m. 10.1 ppb (10) 0.4 ppb (1) N/A 10.0 ppb (10) N/A 0.0 ppb (0) 12.0 ppb (12) 0.31 ppb (4) N/A -2.0 μg/m3 (0) 12.0
 
Oct. 21, 2021, 4 a.m. 6.8 ppb (7) 0.2 ppb (1) N/A 7.0 ppb (7) N/A 0.0 ppb (0) 16.0 ppb (15) 0.27 ppb (4) N/A -3.0 μg/m3 (0) 15.0
 
Oct. 21, 2021, 3 a.m. 9.6 ppb (10) 0.3 ppb (1) N/A 9.0 ppb (9) N/A 0.0 ppb (0) 14.0 ppb (13) 0.32 ppb (4) N/A -3.0 μg/m3 (0) 13.0
 
Oct. 21, 2021, 2 a.m. 12.0 ppb (12) 0.3 ppb (1) N/A 12.0 ppb (12) N/A 0.0 ppb (0) 14.0 ppb (13) 0.34 ppb (4) N/A -1.0 μg/m3 (0) 13.0
 
Oct. 21, 2021, 1 a.m. 13.9 ppb (14) 0.5 ppb (1) N/A 13.0 ppb (13) N/A 0.0 ppb (0) 16.0 ppb (15) 0.33 ppb (4) N/A 2.0 μg/m3 (9) 15.0
 
Oct. 21, 2021, midnight 20.2 ppb (20) 3.3 ppb (4) N/A 17.0 ppb (17) N/A 0.0 ppb (0) 15.0 ppb (14) 0.35 ppb (4) N/A 2.0 μg/m3 (9) 20.0
 
Oct. 20, 2021, 11 p.m. 23.7 ppb (23) 3.3 ppb (4) N/A 20.0 ppb (19) N/A 0.0 ppb (0) 12.0 ppb (12) 0.41 ppb (5) N/A 3.0 μg/m3 (13) 23.0
 
Oct. 20, 2021, 10 p.m. 33.2 ppb (32) 7.8 ppb (8) N/A 26.0 ppb (25) N/A 0.0 ppb (0) 10.0 ppb (10) 0.38 ppb (5) N/A 3.0 μg/m3 (13) 32.0
 
Oct. 20, 2021, 9 p.m. 27.2 ppb (26) 5.8 ppb (6) N/A 21.0 ppb (20) N/A 0.0 ppb (0) 14.0 ppb (13) 0.28 ppb (4) N/A 4.0 μg/m3 (17) 26.0
 
Oct. 20, 2021, 8 p.m. 32.7 ppb (31) 8.0 ppb (8) N/A 25.0 ppb (24) N/A 0.0 ppb (0) 12.0 ppb (12) 0.31 ppb (4) N/A 7.0 μg/m3 (30) 31.0
 
Oct. 20, 2021, 7 p.m. 21.8 ppb (21) 4.4 ppb (5) N/A 17.0 ppb (17) N/A 0.0 ppb (0) 18.0 ppb (17) 0.26 ppb (4) N/A 2.0 μg/m3 (9) 21.0
 
Oct. 20, 2021, 6 p.m. 14.2 ppb (14) 2.5 ppb (3) N/A 12.0 ppb (12) N/A 0.0 ppb (0) 23.0 ppb (22) 0.21 ppb (3) N/A 0.0 μg/m3 (0) 22.0
 
Oct. 20, 2021, 5 p.m. 13.0 ppb (13) 1.6 ppb (2) N/A 11.0 ppb (11) N/A 0.0 ppb (0) 21.0 ppb (20) 0.32 ppb (4) N/A 0.0 μg/m3 (0) 20.0
 
Oct. 20, 2021, 4 p.m. 11.6 ppb (11) 0.9 ppb (1) N/A 11.0 ppb (11) N/A 0.0 ppb (0) 22.0 ppb (21) 0.22 ppb (3) N/A -1.0 μg/m3 (0) 21.0
 
Oct. 20, 2021, 3 p.m. 11.1 ppb (11) 0.8 ppb (1) N/A 10.0 ppb (10) N/A 0.0 ppb (0) 23.0 ppb (22) 0.24 ppb (3) N/A N/A 22.0
 
Oct. 20, 2021, 2 p.m. 15.5 ppb (15) 7.1 ppb (7) N/A 8.0 ppb (8) N/A 0.0 ppb (0) 23.0 ppb (22) 0.21 ppb (3) N/A 4.0 μg/m3 (17) 22.0
 
Oct. 20, 2021, 1 p.m. 22.7 ppb (22) 14.6 ppb (14) N/A 8.0 ppb (8) N/A 0.0 ppb (0) 24.0 ppb (23) 0.18 ppb (3) N/A 3.0 μg/m3 (13) 23.0
 
Oct. 20, 2021, noon 4.7 ppb (5) 0.1 ppb (1) N/A 5.0 ppb (5) N/A N/A 29.0 ppb (27) 0.15 ppb (2) N/A 2.0 μg/m3 (9) 27.0
 
Oct. 20, 2021, 11 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
 
Oct. 20, 2021, 10 a.m. 2.2 ppb (3) 0.1 ppb (1) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 33.0 ppb (31) 0.1 ppb (2) N/A 0.0 μg/m3 (0) 31.0
 
Oct. 20, 2021, 9 a.m. 1.7 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 33.0 ppb (31) 0.11 ppb (2) N/A 0.0 μg/m3 (0) 31.0
 
Oct. 20, 2021, 8 a.m. 1.8 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 34.0 ppb (32) 0.11 ppb (2) N/A 2.0 μg/m3 (9) 32.0
 
Oct. 20, 2021, 6 a.m. 3.1 ppb (3) 0.0 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 34.0 ppb (32) 0.1 ppb (2) N/A 3.0 μg/m3 (13) 32.0
 
Oct. 20, 2021, 5 a.m. 2.7 ppb (3) 0.0 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 37.0 ppb (35) 0.07 ppb (2) N/A 2.0 μg/m3 (9) 35.0
 
Oct. 20, 2021, 4 a.m. 4.3 ppb (5) 0.0 ppb (0) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 35.0 ppb (33) 0.1 ppb (2) N/A 3.0 μg/m3 (13) 33.0
 
Oct. 20, 2021, 3 a.m. 4.9 ppb (5) 0.0 ppb (0) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 36.0 ppb (34) 0.12 ppb (2) N/A 5.0 μg/m3 (21) 34.0
 
Oct. 20, 2021, 2 a.m. 4.0 ppb (4) 0.0 ppb (0) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 37.0 ppb (35) 0.11 ppb (2) N/A 4.0 μg/m3 (17) 35.0
 
Oct. 20, 2021, 1 a.m. 5.2 ppb (5) 0.0 ppb (0) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 37.0 ppb (35) 0.11 ppb (2) N/A 6.0 μg/m3 (25) 35.0
 
Oct. 20, 2021, midnight 7.6 ppb (8) 0.4 ppb (1) N/A 7.0 ppb (7) N/A 0.0 ppb (0) 34.0 ppb (32) 0.14 ppb (2) N/A 5.0 μg/m3 (21) 32.0
 
Oct. 19, 2021, 11 p.m. 15.4 ppb (15) 2.2 ppb (3) N/A 13.0 ppb (13) N/A 1.0 ppb (2) 28.0 ppb (26) 0.21 ppb (3) N/A 2.0 μg/m3 (9) 26.0
 
Oct. 19, 2021, 10 p.m. 12.9 ppb (13) 2.6 ppb (3) N/A 10.0 ppb (10) N/A 0.0 ppb (0) 31.0 ppb (29) 0.2 ppb (3) N/A 4.0 μg/m3 (17) 29.0
 
Oct. 19, 2021, 9 p.m. 8.9 ppb (9) 1.2 ppb (2) N/A 8.0 ppb (8) N/A 0.0 ppb (0) 37.0 ppb (35) 0.15 ppb (2) N/A 3.0 μg/m3 (13) 35.0
 
Oct. 19, 2021, 8 p.m. 5.7 ppb (6) 0.8 ppb (1) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 37.0 ppb (35) 0.15 ppb (2) N/A 3.0 μg/m3 (13) 35.0
 
Oct. 19, 2021, 7 p.m. 9.2 ppb (9) 1.9 ppb (2) N/A 7.0 ppb (7) N/A 0.0 ppb (0) 33.0 ppb (31) 0.18 ppb (3) N/A 2.0 μg/m3 (9) 31.0
 
Oct. 19, 2021, 6 p.m. 15.7 ppb (15) 4.7 ppb (5) N/A 11.0 ppb (11) N/A 1.0 ppb (2) 27.0 ppb (25) 0.23 ppb (3) N/A 5.0 μg/m3 (21) 25.0
 
Oct. 19, 2021, 5 p.m. 22.5 ppb (22) 6.6 ppb (7) N/A 16.0 ppb (16) N/A 0.0 ppb (0) 18.0 ppb (17) 0.23 ppb (3) N/A 8.0 μg/m3 (34) 34.0
 
Oct. 19, 2021, 4 p.m. 16.2 ppb (16) 4.0 ppb (4) N/A 12.0 ppb (12) N/A 0.0 ppb (0) 19.0 ppb (18) 0.24 ppb (3) N/A 5.0 μg/m3 (21) 21.0
 
Oct. 19, 2021, 3 p.m. 24.3 ppb (23) 6.3 ppb (6) N/A 18.0 ppb (17) N/A 0.0 ppb (0) 13.0 ppb (13) 0.37 ppb (5) N/A 6.0 μg/m3 (25) 25.0
 
Oct. 19, 2021, 2 p.m. 23.3 ppb (22) 3.8 ppb (4) N/A 20.0 ppb (19) N/A 0.0 ppb (0) 8.0 ppb (8) 0.4 ppb (5) N/A 6.0 μg/m3 (25) 25.0
 
Oct. 19, 2021, 1 p.m. 27.9 ppb (27) 8.1 ppb (8) N/A 20.0 ppb (19) N/A 0.0 ppb (0) 9.0 ppb (9) 0.32 ppb (4) N/A 4.0 μg/m3 (17) 27.0
 
Oct. 19, 2021, noon 18.7 ppb (18) 1.2 ppb (2) N/A 18.0 ppb (17) N/A N/A 10.0 ppb (10) 0.23 ppb (3) N/A 3.0 μg/m3 (13) 18.0
 
Oct. 19, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A -1.0 μg/m3 (0) 0.0
Oct. 19, 2021, 10 a.m. 16.7 ppb (16) 0.7 ppb (1) N/A 16.0 ppb (16) N/A 0.0 ppb (0) 7.0 ppb (7) 0.36 ppb (5) N/A 0.0 μg/m3 (0) 16.0
 
Oct. 19, 2021, 9 a.m. 16.4 ppb (16) 1.0 ppb (1) N/A 15.0 ppb (15) N/A 0.0 ppb (0) 9.0 ppb (9) 0.37 ppb (5) N/A 3.0 μg/m3 (13) 16.0
 
Oct. 19, 2021, 8 a.m. 16.6 ppb (16) 1.0 ppb (1) N/A 16.0 ppb (16) N/A 0.0 ppb (0) 10.0 ppb (10) 0.39 ppb (5) N/A 4.0 μg/m3 (17) 17.0
 
Oct. 19, 2021, 7 a.m. 11.3 ppb (11) 0.1 ppb (1) N/A 11.0 ppb (11) N/A 0.0 ppb (0) 18.0 ppb (17) 0.25 ppb (3) N/A 3.0 μg/m3 (13) 17.0
 
Oct. 19, 2021, 6 a.m. 8.3 ppb (8) -0.1 ppb (0) N/A 8.0 ppb (8) N/A 0.0 ppb (0) 25.0 ppb (24) 0.16 ppb (3) N/A 1.0 μg/m3 (5) 24.0
 
Oct. 19, 2021, 5 a.m. 6.0 ppb (6) 0.0 ppb (0) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 30.0 ppb (28) 0.14 ppb (2) N/A 0.0 μg/m3 (0) 28.0
 
Oct. 19, 2021, 4 a.m. 8.0 ppb (8) 0.0 ppb (0) N/A 8.0 ppb (8) N/A 0.0 ppb (0) 28.0 ppb (26) 0.16 ppb (3) N/A -1.0 μg/m3 (0) 26.0
 
Oct. 19, 2021, 3 a.m. 9.2 ppb (9) 0.1 ppb (1) N/A 9.0 ppb (9) N/A 0.0 ppb (0) 28.0 ppb (26) 0.18 ppb (3) N/A 1.0 μg/m3 (5) 26.0
 
Oct. 19, 2021, 2 a.m. 9.9 ppb (10) 0.2 ppb (1) N/A 10.0 ppb (10) N/A 0.0 ppb (0) 28.0 ppb (26) 0.18 ppb (3) N/A 2.0 μg/m3 (9) 26.0
 
Oct. 19, 2021, 1 a.m. 10.9 ppb (11) 0.2 ppb (1) N/A 11.0 ppb (11) N/A 0.0 ppb (0) 28.0 ppb (26) 0.16 ppb (3) N/A -1.0 μg/m3 (0) 26.0
 
Oct. 19, 2021, midnight 4.8 ppb (5) 0.4 ppb (1) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 33.0 ppb (31) 0.15 ppb (2) N/A 0.0 μg/m3 (0) 31.0
 
Oct. 18, 2021, 11 p.m. 5.2 ppb (5) 1.0 ppb (1) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 33.0 ppb (31) 0.14 ppb (2) N/A 3.0 μg/m3 (13) 31.0
 
Oct. 18, 2021, 10 p.m. 6.4 ppb (7) 1.3 ppb (2) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 33.0 ppb (31) 0.14 ppb (2) N/A 1.0 μg/m3 (5) 31.0
 
Oct. 18, 2021, 9 p.m. 7.1 ppb (7) 1.6 ppb (2) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 32.0 ppb (30) 0.15 ppb (2) N/A 1.0 μg/m3 (5) 30.0
 
Oct. 18, 2021, 8 p.m. 5.2 ppb (5) 1.7 ppb (2) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 33.0 ppb (31) 0.13 ppb (2) N/A 2.0 μg/m3 (9) 31.0
 
Oct. 18, 2021, 7 p.m. 5.0 ppb (5) 1.0 ppb (1) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 33.0 ppb (31) 0.14 ppb (2) N/A -1.0 μg/m3 (0) 31.0
 
Oct. 18, 2021, 6 p.m. 5.4 ppb (6) 1.2 ppb (2) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 33.0 ppb (31) 0.13 ppb (2) N/A -2.0 μg/m3 (0) 31.0
 
Oct. 18, 2021, 5 p.m. 3.4 ppb (4) 0.6 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 34.0 ppb (32) 0.12 ppb (2) N/A -1.0 μg/m3 (0) 32.0
 
Oct. 18, 2021, 4 p.m. 7.2 ppb (7) 1.5 ppb (2) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 32.0 ppb (30) 0.14 ppb (2) N/A 1.0 μg/m3 (5) 30.0
 
Oct. 18, 2021, 3 p.m. 6.9 ppb (7) 1.0 ppb (1) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 31.0 ppb (29) 0.13 ppb (2) N/A 2.0 μg/m3 (9) 29.0
 
Oct. 18, 2021, 2 p.m. 10.1 ppb (10) 0.7 ppb (1) N/A 9.0 ppb (9) N/A 0.0 ppb (0) 29.0 ppb (27) 0.13 ppb (2) N/A 2.0 μg/m3 (9) 27.0
 
Oct. 18, 2021, 1 p.m. 7.4 ppb (7) 0.3 ppb (1) N/A 7.0 ppb (7) N/A 0.0 ppb (0) 31.0 ppb (29) 0.14 ppb (2) N/A 3.0 μg/m3 (13) 29.0
 
Oct. 18, 2021, noon 4.8 ppb (5) 0.2 ppb (1) N/A 5.0 ppb (5) N/A N/A 33.0 ppb (31) 0.11 ppb (2) N/A -1.0 μg/m3 (0) 31.0
 
Oct. 18, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 0.0 μg/m3 (0) 0.0
Oct. 18, 2021, 10 a.m. 2.6 ppb (3) 0.0 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 35.0 ppb (33) 0.11 ppb (2) N/A 2.0 μg/m3 (9) 33.0
 
Oct. 18, 2021, 9 a.m. 2.0 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 36.0 ppb (34) 0.1 ppb (2) N/A 3.0 μg/m3 (13) 34.0
 
Oct. 18, 2021, 8 a.m. 2.1 ppb (2) -0.1 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 36.0 ppb (34) 0.11 ppb (2) N/A 4.0 μg/m3 (17) 34.0
 
Oct. 18, 2021, 7 a.m. 1.9 ppb (2) -0.1 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 36.0 ppb (34) 0.12 ppb (2) N/A 4.0 μg/m3 (17) 34.0
 
Oct. 18, 2021, 6 a.m. 1.4 ppb (2) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 37.0 ppb (35) 0.12 ppb (2) N/A 1.0 μg/m3 (5) 35.0
 
Oct. 18, 2021, 5 a.m. 3.2 ppb (4) 0.0 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 34.0 ppb (32) 0.13 ppb (2) N/A 0.0 μg/m3 (0) 32.0
 
Oct. 18, 2021, 4 a.m. 2.6 ppb (3) 0.0 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 34.0 ppb (32) 0.14 ppb (2) N/A 1.0 μg/m3 (5) 32.0
 
Oct. 18, 2021, 3 a.m. 2.3 ppb (3) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 35.0 ppb (33) 0.12 ppb (2) N/A 3.0 μg/m3 (13) 33.0
 
Oct. 18, 2021, 2 a.m. 2.3 ppb (3) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 34.0 ppb (32) 0.13 ppb (2) N/A 1.0 μg/m3 (5) 32.0
 
Oct. 18, 2021, 1 a.m. 3.4 ppb (4) 0.1 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 34.0 ppb (32) 0.14 ppb (2) N/A 3.0 μg/m3 (13) 32.0
 
Oct. 18, 2021, midnight 2.1 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 34.0 ppb (32) 0.12 ppb (2) N/A 5.0 μg/m3 (21) 32.0
 
Oct. 17, 2021, 11 p.m. 3.6 ppb (4) 0.3 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 33.0 ppb (31) 0.13 ppb (2) N/A 2.0 μg/m3 (9) 31.0
 
Oct. 17, 2021, 10 p.m. 2.5 ppb (3) 0.3 ppb (1) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 35.0 ppb (33) 0.12 ppb (2) N/A 5.0 μg/m3 (21) 33.0
 
Oct. 17, 2021, 9 p.m. 2.9 ppb (3) 0.4 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 35.0 ppb (33) 0.13 ppb (2) N/A 6.0 μg/m3 (25) 33.0
 
Oct. 17, 2021, 8 p.m. 4.1 ppb (4) 0.8 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 33.0 ppb (31) 0.13 ppb (2) N/A 4.0 μg/m3 (17) 31.0
 
Oct. 17, 2021, 7 p.m. 6.7 ppb (7) 1.2 ppb (2) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 32.0 ppb (30) 0.16 ppb (3) N/A 6.0 μg/m3 (25) 30.0
 
Oct. 17, 2021, 6 p.m. 3.7 ppb (4) 0.5 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 35.0 ppb (33) 0.14 ppb (2) N/A 7.0 μg/m3 (30) 33.0
 
Oct. 17, 2021, 5 p.m. 3.7 ppb (4) 0.5 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 34.0 ppb (32) 0.14 ppb (2) N/A 6.0 μg/m3 (25) 32.0
 
Oct. 17, 2021, 4 p.m. 7.4 ppb (7) 1.1 ppb (2) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 31.0 ppb (29) 0.16 ppb (3) N/A 7.0 μg/m3 (30) 30.0
 
Oct. 17, 2021, 3 p.m. 18.7 ppb (18) 2.6 ppb (3) N/A 16.0 ppb (16) N/A 0.0 ppb (0) 19.0 ppb (18) 0.3 ppb (4) N/A 6.0 μg/m3 (25) 25.0
 
Oct. 17, 2021, 2 p.m. 18.3 ppb (18) 0.9 ppb (1) N/A 17.0 ppb (17) N/A 0.0 ppb (0) 17.0 ppb (16) 0.38 ppb (5) N/A 8.0 μg/m3 (34) 34.0
 
Oct. 17, 2021, 1 p.m. 19.6 ppb (19) 0.6 ppb (1) N/A 19.0 ppb (18) N/A 0.0 ppb (0) 16.0 ppb (15) 0.37 ppb (5) N/A 10.0 μg/m3 (42) 42.0
 
Oct. 17, 2021, noon 16.3 ppb (16) 0.3 ppb (1) N/A 16.0 ppb (16) N/A 0.0 ppb (0) 19.0 ppb (18) 0.41 ppb (5) N/A 6.0 μg/m3 (25) 25.0
 
Oct. 17, 2021, 11 a.m. 16.3 ppb (16) 0.0 ppb (0) N/A 16.0 ppb (16) N/A N/A 18.0 ppb (17) 0.44 ppb (5) N/A 11.0 μg/m3 (46) 46.0
 
Oct. 17, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 9.0 μg/m3 (38) 38.0
 
Oct. 17, 2021, 9 a.m. 14.6 ppb (14) 0.1 ppb (1) N/A 15.0 ppb (15) N/A 0.0 ppb (0) 29.0 ppb (27) 0.34 ppb (4) N/A 9.0 μg/m3 (38) 38.0
 
Oct. 17, 2021, 8 a.m. 20.0 ppb (19) 0.2 ppb (1) N/A 20.0 ppb (19) N/A 0.0 ppb (0) 24.0 ppb (23) 0.49 ppb (6) N/A 11.0 μg/m3 (46) 46.0
 
Oct. 17, 2021, 7 a.m. 27.9 ppb (27) 1.0 ppb (1) N/A 27.0 ppb (26) N/A 0.0 ppb (0) 19.0 ppb (18) 0.59 ppb (7) N/A 14.0 μg/m3 (55) 55.0
 
Oct. 17, 2021, 6 a.m. 39.9 ppb (38) 3.1 ppb (3) N/A 37.0 ppb (35) N/A 0.0 ppb (0) 8.0 ppb (8) 0.9 ppb (11) N/A 22.0 μg/m3 (72) 72.0
 
Oct. 17, 2021, 5 a.m. 46.5 ppb (44) 7.4 ppb (7) N/A 39.0 ppb (37) N/A 0.0 ppb (0) 4.0 ppb (4) 1.0 ppb (12) N/A 28.0 μg/m3 (85) 85.0
 
Oct. 17, 2021, 4 a.m. 27.5 ppb (26) 0.1 ppb (1) N/A 27.0 ppb (26) N/A 0.0 ppb (0) 20.0 ppb (19) 0.64 ppb (7) N/A 18.0 μg/m3 (64) 64.0
 
Oct. 17, 2021, 3 a.m. 19.1 ppb (19) 0.0 ppb (0) N/A 19.0 ppb (18) N/A 0.0 ppb (0) 36.0 ppb (34) 0.5 ppb (6) N/A 11.0 μg/m3 (46) 46.0
 
Oct. 17, 2021, 2 a.m. 18.2 ppb (18) 0.1 ppb (1) N/A 18.0 ppb (17) N/A 0.0 ppb (0) 40.0 ppb (38) 0.4 ppb (5) N/A 14.0 μg/m3 (55) 55.0
 
Oct. 17, 2021, 1 a.m. 23.0 ppb (22) 0.3 ppb (1) N/A 23.0 ppb (22) N/A 1.0 ppb (2) 40.0 ppb (38) 0.38 ppb (5) N/A 9.0 μg/m3 (38) 38.0
 
Oct. 17, 2021, midnight 33.0 ppb (32) 2.3 ppb (3) N/A 31.0 ppb (30) N/A 1.0 ppb (2) 37.0 ppb (35) 0.4 ppb (5) N/A 10.0 μg/m3 (42) 42.0
 
Oct. 16, 2021, 11 p.m. 23.4 ppb (23) 2.2 ppb (3) N/A 21.0 ppb (20) N/A 1.0 ppb (2) 47.0 ppb (44) 0.27 ppb (4) N/A 9.0 μg/m3 (38) 44.0
 
Oct. 16, 2021, 10 p.m. 11.1 ppb (11) 0.8 ppb (1) N/A 10.0 ppb (10) N/A 2.0 ppb (3) 60.0 ppb (68) 0.23 ppb (3) N/A 8.0 μg/m3 (34) 68.0
 
Oct. 16, 2021, 9 p.m. 11.8 ppb (12) 1.2 ppb (2) N/A 11.0 ppb (11) N/A 2.0 ppb (3) 52.0 ppb (49) 0.23 ppb (3) N/A 7.0 μg/m3 (30) 49.0
 
Oct. 16, 2021, 8 p.m. 16.1 ppb (16) 2.3 ppb (3) N/A 14.0 ppb (14) N/A 2.0 ppb (3) 48.0 ppb (45) 0.29 ppb (4) N/A 10.0 μg/m3 (42) 45.0
 
Oct. 16, 2021, 7 p.m. 35.8 ppb (34) 8.9 ppb (9) N/A 27.0 ppb (26) N/A 1.0 ppb (2) 28.0 ppb (26) 0.4 ppb (5) N/A 9.0 μg/m3 (38) 38.0
 
Oct. 16, 2021, 6 p.m. 29.6 ppb (28) 7.2 ppb (7) N/A 23.0 ppb (22) N/A 1.0 ppb (2) 27.0 ppb (25) 0.4 ppb (5) N/A 10.0 μg/m3 (42) 42.0
 
Oct. 16, 2021, 5 p.m. 35.1 ppb (34) 11.3 ppb (11) N/A 24.0 ppb (23) N/A 1.0 ppb (2) 18.0 ppb (17) 0.4 ppb (5) N/A 14.0 μg/m3 (55) 55.0
 
Oct. 16, 2021, 4 p.m. 22.8 ppb (22) 6.3 ppb (6) N/A 17.0 ppb (17) N/A 0.0 ppb (0) 16.0 ppb (15) 0.33 ppb (4) N/A 6.0 μg/m3 (25) 25.0
 
Oct. 16, 2021, 3 p.m. 40.5 ppb (39) 16.8 ppb (16) N/A 24.0 ppb (23) N/A 0.0 ppb (0) 8.0 ppb (8) 0.54 ppb (6) N/A 8.0 μg/m3 (34) 39.0
 
Oct. 16, 2021, 2 p.m. 51.4 ppb (49) 24.5 ppb (24) N/A 27.0 ppb (26) N/A 0.0 ppb (0) 1.0 ppb (1) 0.86 ppb (11) N/A 12.0 μg/m3 (50) 50.0
 
Oct. 16, 2021, 1 p.m. 45.6 ppb (44) 20.1 ppb (19) N/A 26.0 ppb (25) N/A 0.0 ppb (0) 1.0 ppb (1) 0.92 ppb (11) N/A 12.0 μg/m3 (50) 50.0
 
Oct. 16, 2021, noon 41.9 ppb (40) 16.5 ppb (16) N/A 25.0 ppb (24) N/A N/A 1.0 ppb (1) 0.89 ppb (11) N/A 10.0 μg/m3 (42) 42.0
 
Oct. 16, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 11.0 μg/m3 (46) 46.0
 
Oct. 16, 2021, 10 a.m. 56.8 ppb (54) 30.9 ppb (30) N/A 26.0 ppb (25) N/A 1.0 ppb (2) 1.0 ppb (1) 1.3 ppb (15) N/A 17.0 μg/m3 (62) 62.0
 
Oct. 16, 2021, 9 a.m. 73.8 ppb (73) 49.5 ppb (47) N/A 24.0 ppb (23) N/A 1.0 ppb (2) 1.0 ppb (1) 1.61 ppb (19) N/A 19.0 μg/m3 (66) 73.0
 
Oct. 16, 2021, 8 a.m. 64.2 ppb (62) 38.8 ppb (37) N/A 25.0 ppb (24) N/A 1.0 ppb (2) 1.0 ppb (1) 1.27 ppb (15) N/A 13.0 μg/m3 (53) 62.0
 
Oct. 16, 2021, 7 a.m. 49.8 ppb (47) 21.8 ppb (21) N/A 28.0 ppb (27) N/A 0.0 ppb (0) 1.0 ppb (1) 0.94 ppb (11) N/A 13.0 μg/m3 (53) 53.0
 
Oct. 16, 2021, 6 a.m. 39.8 ppb (38) 11.5 ppb (11) N/A 28.0 ppb (27) N/A 0.0 ppb (0) 1.0 ppb (1) 0.84 ppb (10) N/A 17.0 μg/m3 (62) 62.0
 
Oct. 16, 2021, 5 a.m. 36.1 ppb (35) 6.4 ppb (7) N/A 30.0 ppb (29) N/A 0.0 ppb (0) 2.0 ppb (2) 0.66 ppb (8) N/A 16.0 μg/m3 (60) 60.0
 
Oct. 16, 2021, 4 a.m. 31.6 ppb (30) 3.4 ppb (4) N/A 28.0 ppb (27) N/A 0.0 ppb (0) 5.0 ppb (5) 0.59 ppb (7) N/A 13.0 μg/m3 (53) 53.0
 
Oct. 16, 2021, 3 a.m. 26.6 ppb (26) 1.1 ppb (2) N/A 26.0 ppb (25) N/A 0.0 ppb (0) 9.0 ppb (9) 0.42 ppb (5) N/A 9.0 μg/m3 (38) 38.0
 
Oct. 16, 2021, 2 a.m. 45.9 ppb (44) 8.6 ppb (9) N/A 37.0 ppb (35) N/A 1.0 ppb (2) 6.0 ppb (6) 0.46 ppb (6) N/A 10.0 μg/m3 (42) 44.0
 
Oct. 16, 2021, 1 a.m. 41.7 ppb (40) 2.5 ppb (3) N/A 39.0 ppb (37) N/A 2.0 ppb (3) 14.0 ppb (13) 0.3 ppb (4) N/A 7.0 μg/m3 (30) 40.0
 
Oct. 16, 2021, midnight 31.0 ppb (30) 4.1 ppb (4) N/A 27.0 ppb (26) N/A 1.0 ppb (2) 28.0 ppb (26) 0.26 ppb (4) N/A 6.0 μg/m3 (25) 30.0
 
Oct. 15, 2021, 11 p.m. 22.7 ppb (22) 3.7 ppb (4) N/A 19.0 ppb (18) N/A 1.0 ppb (2) 34.0 ppb (32) 0.22 ppb (3) N/A 5.0 μg/m3 (21) 32.0
 
Oct. 15, 2021, 10 p.m. 13.5 ppb (13) 2.1 ppb (2) N/A 12.0 ppb (12) N/A 1.0 ppb (2) 39.0 ppb (37) 0.22 ppb (3) N/A 3.0 μg/m3 (13) 37.0
 
Oct. 15, 2021, 9 p.m. 20.7 ppb (20) 4.9 ppb (5) N/A 16.0 ppb (16) N/A 1.0 ppb (2) 30.0 ppb (28) 0.23 ppb (3) N/A 2.0 μg/m3 (9) 28.0
 
Oct. 15, 2021, 8 p.m. 25.0 ppb (24) 7.2 ppb (7) N/A 18.0 ppb (17) N/A 2.0 ppb (3) 24.0 ppb (23) 0.26 ppb (4) N/A 5.0 μg/m3 (21) 24.0
 
Oct. 15, 2021, 7 p.m. 24.1 ppb (23) 7.6 ppb (8) N/A 17.0 ppb (17) N/A 1.0 ppb (2) 22.0 ppb (21) 0.25 ppb (3) N/A 5.0 μg/m3 (21) 23.0
 
Oct. 15, 2021, 6 p.m. 34.8 ppb (33) 14.2 ppb (14) N/A 21.0 ppb (20) N/A 1.0 ppb (2) 15.0 ppb (14) 0.33 ppb (4) N/A 6.0 μg/m3 (25) 33.0
 
Oct. 15, 2021, 5 p.m. 44.6 ppb (43) 21.0 ppb (20) N/A 24.0 ppb (23) N/A 1.0 ppb (2) 11.0 ppb (11) 0.4 ppb (5) N/A 9.0 μg/m3 (38) 43.0
 
Oct. 15, 2021, 4 p.m. 39.0 ppb (37) 17.9 ppb (17) N/A 21.0 ppb (20) N/A 1.0 ppb (2) 9.0 ppb (9) 0.34 ppb (4) N/A 5.0 μg/m3 (21) 37.0
 
Oct. 15, 2021, 3 p.m. 71.0 ppb (70) 42.8 ppb (41) N/A 28.0 ppb (27) N/A 1.0 ppb (2) 3.0 ppb (3) 0.85 ppb (10) N/A 9.0 μg/m3 (38) 70.0
 
Oct. 15, 2021, 2 p.m. 89.1 ppb (89) 63.3 ppb (61) N/A 26.0 ppb (25) N/A 1.0 ppb (2) 1.0 ppb (1) 1.18 ppb (14) N/A 13.0 μg/m3 (53) 89.0