ID: 9736

AQSQID: 124000102402

Site Name: Smithers Muheim Memorial

Added: July 24, 2021, 5:40 a.m.

Updated: Sept. 25, 2021, 8:59 a.m.

Location: Smithers (King St), N/A

Reporting: True, Located: True

Current AQI: 10.0

Smithers (King St) N/A, CA: 54.778486, -127.168542

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
Sept. 25, 2021, 7 a.m. N/A 6.4 ppb (7) N/A 8.0 ppb (8) N/A N/A 2.0 ppb (2) N/A 8.0 μg/m3 (8) 2.4 μg/m3 (10) 10.0
 
Sept. 25, 2021, 6 a.m. N/A 6.1 ppb (6) N/A 8.0 ppb (8) N/A N/A 3.0 ppb (3) N/A 10.0 μg/m3 (10) 3.0 μg/m3 (13) 13.0
 
Sept. 25, 2021, 5 a.m. N/A 2.4 ppb (3) N/A 6.0 ppb (6) N/A N/A 10.0 ppb (10) N/A 3.0 μg/m3 (3) 1.9 μg/m3 (8) 10.0
 
Sept. 25, 2021, 4 a.m. N/A 0.7 ppb (1) N/A 3.0 ppb (3) N/A N/A 19.0 ppb (18) N/A 7.0 μg/m3 (7) 1.7 μg/m3 (8) 18.0
 
Sept. 25, 2021, 3 a.m. N/A 0.8 ppb (1) N/A 4.0 ppb (4) N/A N/A 17.0 ppb (16) N/A 6.0 μg/m3 (6) 1.2 μg/m3 (5) 16.0
 
Sept. 25, 2021, 2 a.m. N/A 0.4 ppb (1) N/A 2.0 ppb (2) N/A N/A 23.0 ppb (22) N/A 10.0 μg/m3 (10) 1.1 μg/m3 (5) 22.0
 
Sept. 25, 2021, 1 a.m. N/A 0.5 ppb (1) N/A 2.0 ppb (2) N/A N/A 23.0 ppb (22) N/A 8.0 μg/m3 (8) 1.1 μg/m3 (5) 22.0
 
Sept. 25, 2021, midnight N/A 0.8 ppb (1) N/A 3.0 ppb (3) N/A N/A 22.0 ppb (21) N/A 10.0 μg/m3 (10) 1.0 μg/m3 (5) 21.0
 
Sept. 24, 2021, 11 p.m. N/A 0.9 ppb (1) N/A 2.0 ppb (2) N/A N/A 23.0 ppb (22) N/A 5.0 μg/m3 (5) 0.9 μg/m3 (4) 22.0
 
Sept. 24, 2021, 10 p.m. N/A 0.4 ppb (1) N/A 2.0 ppb (2) N/A N/A 23.0 ppb (22) N/A 5.0 μg/m3 (5) 1.0 μg/m3 (5) 22.0
 
Sept. 24, 2021, 9 p.m. N/A -0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 26.0 ppb (25) N/A 3.0 μg/m3 (3) 0.8 μg/m3 (4) 25.0
 
Sept. 24, 2021, 8 p.m. N/A 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 27.0 ppb (25) N/A 7.0 μg/m3 (7) 1.0 μg/m3 (5) 25.0
 
Sept. 24, 2021, 7 p.m. N/A -0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 27.0 ppb (25) N/A 4.0 μg/m3 (4) 1.1 μg/m3 (5) 25.0
 
Sept. 24, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 4.0 μg/m3 (4) 1.9 μg/m3 (8) 8.0
 
Sept. 24, 2021, 5 p.m. N/A 0.6 ppb (1) N/A 3.0 ppb (3) N/A N/A 21.0 ppb (20) N/A 5.0 μg/m3 (5) 1.8 μg/m3 (8) 20.0
 
Sept. 24, 2021, 4 p.m. N/A 0.6 ppb (1) N/A 4.0 ppb (4) N/A N/A 20.0 ppb (19) N/A 1.0 μg/m3 (1) 2.0 μg/m3 (9) 19.0
 
Sept. 24, 2021, 3 p.m. N/A 0.0 ppb (0) N/A 5.0 ppb (5) N/A N/A 21.0 ppb (20) N/A 5.0 μg/m3 (5) 2.1 μg/m3 (9) 20.0
 
Sept. 24, 2021, 2 p.m. N/A 0.5 ppb (1) N/A 8.0 ppb (8) N/A N/A 14.0 ppb (13) N/A 0.0 μg/m3 (0) 2.1 μg/m3 (9) 13.0
 
Sept. 24, 2021, 1 p.m. N/A 0.2 ppb (1) N/A 3.0 ppb (3) N/A N/A 19.0 ppb (18) N/A 1.0 μg/m3 (1) 1.8 μg/m3 (8) 18.0
 
Sept. 24, 2021, noon N/A 1.3 ppb (2) N/A 3.0 ppb (3) N/A N/A 13.0 ppb (13) N/A 6.0 μg/m3 (6) 1.6 μg/m3 (7) 13.0
 
Sept. 24, 2021, 11 a.m. N/A 0.6 ppb (1) N/A 3.0 ppb (3) N/A N/A 13.0 ppb (13) N/A 5.0 μg/m3 (5) 4.2 μg/m3 (18) 18.0
 
Sept. 24, 2021, 10 a.m. N/A 1.0 ppb (1) N/A 4.0 ppb (4) N/A N/A 11.0 ppb (11) N/A 5.0 μg/m3 (5) 5.3 μg/m3 (23) 23.0
 
Sept. 24, 2021, 9 a.m. N/A 1.4 ppb (2) N/A 3.0 ppb (3) N/A N/A 9.0 ppb (9) N/A 9.0 μg/m3 (9) 5.0 μg/m3 (21) 21.0
 
Sept. 24, 2021, 8 a.m. N/A 1.6 ppb (2) N/A 3.0 ppb (3) N/A N/A 7.0 ppb (7) N/A 7.0 μg/m3 (7) 4.2 μg/m3 (18) 18.0
 
Sept. 24, 2021, 7 a.m. N/A 1.8 ppb (2) N/A 4.0 ppb (4) N/A N/A 7.0 ppb (7) N/A 8.0 μg/m3 (8) 5.5 μg/m3 (23) 23.0
 
Sept. 24, 2021, 6 a.m. N/A 1.8 ppb (2) N/A 5.0 ppb (5) N/A N/A 9.0 ppb (9) N/A 8.0 μg/m3 (8) 4.9 μg/m3 (21) 21.0
 
Sept. 24, 2021, 5 a.m. N/A 1.5 ppb (2) N/A 5.0 ppb (5) N/A N/A 10.0 ppb (10) N/A 10.0 μg/m3 (10) 5.2 μg/m3 (22) 22.0
 
Sept. 24, 2021, 4 a.m. N/A 2.9 ppb (3) N/A 8.0 ppb (8) N/A N/A 5.0 ppb (5) N/A 10.0 μg/m3 (10) 6.9 μg/m3 (29) 29.0
 
Sept. 24, 2021, 3 a.m. N/A 3.3 ppb (4) N/A 8.0 ppb (8) N/A N/A 7.0 ppb (7) N/A 14.0 μg/m3 (13) 6.4 μg/m3 (27) 27.0
 
Sept. 24, 2021, 2 a.m. N/A 2.1 ppb (2) N/A 5.0 ppb (5) N/A N/A 14.0 ppb (13) N/A 15.0 μg/m3 (14) 6.9 μg/m3 (29) 29.0
 
Sept. 24, 2021, 1 a.m. N/A 6.0 ppb (6) N/A 9.0 ppb (9) N/A N/A 5.0 ppb (5) N/A 17.0 μg/m3 (16) 10.1 μg/m3 (43) 43.0
 
Sept. 24, 2021, midnight N/A 9.0 ppb (9) N/A 9.0 ppb (9) N/A N/A 6.0 ppb (6) N/A 16.0 μg/m3 (15) 9.5 μg/m3 (40) 40.0
 
Sept. 23, 2021, 11 p.m. N/A 6.9 ppb (7) N/A 8.0 ppb (8) N/A N/A 9.0 ppb (9) N/A 19.0 μg/m3 (18) 10.4 μg/m3 (44) 44.0
 
Sept. 23, 2021, 10 p.m. N/A 4.1 ppb (4) N/A 10.0 ppb (10) N/A N/A 9.0 ppb (9) N/A 18.0 μg/m3 (17) 11.1 μg/m3 (47) 47.0
 
Sept. 23, 2021, 9 p.m. N/A 8.9 ppb (9) N/A 9.0 ppb (9) N/A N/A 8.0 ppb (8) N/A 21.0 μg/m3 (20) 11.9 μg/m3 (50) 50.0
 
Sept. 23, 2021, 8 p.m. N/A 8.6 ppb (9) N/A 7.0 ppb (7) N/A N/A 13.0 ppb (13) N/A 18.0 μg/m3 (17) 10.8 μg/m3 (46) 46.0
 
Sept. 23, 2021, 7 p.m. N/A 1.5 ppb (2) N/A 3.0 ppb (3) N/A N/A 14.0 ppb (13) N/A 15.0 μg/m3 (14) 8.5 μg/m3 (36) 36.0
 
Sept. 23, 2021, 6 p.m. N/A 5.0 ppb (5) N/A 5.0 ppb (5) N/A N/A 7.0 ppb (7) N/A 22.0 μg/m3 (21) 8.3 μg/m3 (35) 35.0
 
Sept. 23, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 32.0 μg/m3 (30) 7.9 μg/m3 (33) 33.0
 
Sept. 23, 2021, 4 p.m. N/A 10.5 ppb (10) N/A 9.0 ppb (9) N/A N/A 3.0 ppb (3) N/A 30.0 μg/m3 (28) 7.1 μg/m3 (30) 30.0
 
Sept. 23, 2021, 3 p.m. N/A 11.0 ppb (11) N/A 10.0 ppb (10) N/A N/A 3.0 ppb (3) N/A 30.0 μg/m3 (28) 6.3 μg/m3 (27) 28.0
 
Sept. 23, 2021, 2 p.m. N/A 13.0 ppb (13) N/A 9.0 ppb (9) N/A N/A 1.0 ppb (1) N/A 23.0 μg/m3 (22) 6.2 μg/m3 (26) 26.0
 
Sept. 23, 2021, 1 p.m. N/A 7.5 ppb (8) N/A 7.0 ppb (7) N/A N/A 2.0 ppb (2) N/A 14.0 μg/m3 (13) 5.3 μg/m3 (23) 23.0
 
Sept. 23, 2021, noon N/A 7.9 ppb (8) N/A 6.0 ppb (6) N/A N/A 2.0 ppb (2) N/A 10.0 μg/m3 (10) 4.9 μg/m3 (21) 21.0
 
Sept. 23, 2021, 11 a.m. N/A 8.1 ppb (8) N/A 7.0 ppb (7) N/A N/A 2.0 ppb (2) N/A 9.0 μg/m3 (9) 5.7 μg/m3 (24) 24.0
 
Sept. 23, 2021, 10 a.m. N/A 5.8 ppb (6) N/A 6.0 ppb (6) N/A N/A 4.0 ppb (4) N/A 14.0 μg/m3 (13) 5.6 μg/m3 (24) 24.0
 
Sept. 23, 2021, 9 a.m. N/A 5.5 ppb (6) N/A 7.0 ppb (7) N/A N/A 3.0 ppb (3) N/A 9.0 μg/m3 (9) 7.2 μg/m3 (31) 31.0
 
Sept. 23, 2021, 8 a.m. N/A 5.1 ppb (5) N/A 7.0 ppb (7) N/A N/A 5.0 ppb (5) N/A 13.0 μg/m3 (13) 5.6 μg/m3 (24) 24.0
 
Sept. 23, 2021, 7 a.m. N/A 4.1 ppb (4) N/A 7.0 ppb (7) N/A N/A 7.0 ppb (7) N/A 10.0 μg/m3 (10) 5.7 μg/m3 (24) 24.0
 
Sept. 23, 2021, 6 a.m. N/A 2.2 ppb (3) N/A 5.0 ppb (5) N/A N/A 14.0 ppb (13) N/A 9.0 μg/m3 (9) 5.3 μg/m3 (23) 23.0
 
Sept. 23, 2021, 5 a.m. N/A 2.1 ppb (2) N/A 8.0 ppb (8) N/A N/A 13.0 ppb (13) N/A 11.0 μg/m3 (11) 8.1 μg/m3 (34) 34.0
 
Sept. 23, 2021, 4 a.m. N/A 1.4 ppb (2) N/A 6.0 ppb (6) N/A N/A 22.0 ppb (21) N/A 10.0 μg/m3 (10) 5.8 μg/m3 (25) 25.0
 
Sept. 23, 2021, 3 a.m. N/A 1.3 ppb (2) N/A 8.0 ppb (8) N/A N/A 22.0 ppb (21) N/A 14.0 μg/m3 (13) 6.9 μg/m3 (29) 29.0
 
Sept. 23, 2021, 2 a.m. N/A 0.8 ppb (1) N/A 3.0 ppb (3) N/A N/A 30.0 ppb (28) N/A 12.0 μg/m3 (12) 6.0 μg/m3 (25) 28.0
 
Sept. 23, 2021, 1 a.m. N/A 0.8 ppb (1) N/A 2.0 ppb (2) N/A N/A 32.0 ppb (30) N/A 18.0 μg/m3 (17) 5.7 μg/m3 (24) 30.0
 
Sept. 23, 2021, midnight N/A 0.8 ppb (1) N/A 2.0 ppb (2) N/A N/A 34.0 ppb (32) N/A 24.0 μg/m3 (23) 4.6 μg/m3 (20) 32.0
 
Sept. 22, 2021, 11 p.m. N/A 1.1 ppb (2) N/A 2.0 ppb (2) N/A N/A 34.0 ppb (32) N/A 17.0 μg/m3 (16) 3.3 μg/m3 (14) 32.0
 
Sept. 22, 2021, 10 p.m. N/A 0.9 ppb (1) N/A 2.0 ppb (2) N/A N/A 33.0 ppb (31) N/A 10.0 μg/m3 (10) 2.6 μg/m3 (11) 31.0
 
Sept. 22, 2021, 9 p.m. N/A 1.0 ppb (1) N/A 1.0 ppb (1) N/A N/A 34.0 ppb (32) N/A 13.0 μg/m3 (13) 2.3 μg/m3 (10) 32.0
 
Sept. 22, 2021, 8 p.m. N/A 0.6 ppb (1) N/A 1.0 ppb (1) N/A N/A 34.0 ppb (32) N/A 14.0 μg/m3 (13) 2.5 μg/m3 (11) 32.0
 
Sept. 22, 2021, 7 p.m. N/A 0.6 ppb (1) N/A 2.0 ppb (2) N/A N/A 33.0 ppb (31) N/A 14.0 μg/m3 (13) 3.3 μg/m3 (14) 31.0
 
Sept. 22, 2021, 6 p.m. N/A 1.2 ppb (2) N/A 3.0 ppb (3) N/A N/A 27.0 ppb (25) N/A 23.0 μg/m3 (22) 3.7 μg/m3 (16) 25.0
 
Sept. 22, 2021, 5 p.m. N/A 4.4 ppb (5) N/A 8.0 ppb (8) N/A N/A 15.0 ppb (14) N/A 26.0 μg/m3 (25) 4.9 μg/m3 (21) 25.0
 
Sept. 22, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 17.0 μg/m3 (16) 6.3 μg/m3 (27) 27.0
 
Sept. 22, 2021, 3 p.m. N/A 19.6 ppb (19) N/A 8.0 ppb (8) N/A N/A 2.0 ppb (2) N/A 9.0 μg/m3 (9) 6.5 μg/m3 (28) 28.0
 
Sept. 22, 2021, 2 p.m. N/A 16.1 ppb (16) N/A 6.0 ppb (6) N/A N/A 1.0 ppb (1) N/A 10.0 μg/m3 (10) 4.2 μg/m3 (18) 18.0
 
Sept. 22, 2021, 1 p.m. N/A 6.8 ppb (7) N/A 7.0 ppb (7) N/A N/A 1.0 ppb (1) N/A 12.0 μg/m3 (12) 4.8 μg/m3 (20) 20.0
 
Sept. 22, 2021, noon N/A 4.2 ppb (4) N/A 8.0 ppb (8) N/A N/A 2.0 ppb (2) N/A 10.0 μg/m3 (10) 5.7 μg/m3 (24) 24.0
 
Sept. 22, 2021, 11 a.m. N/A 3.4 ppb (4) N/A 7.0 ppb (7) N/A N/A 3.0 ppb (3) N/A 9.0 μg/m3 (9) 5.4 μg/m3 (23) 23.0
 
Sept. 22, 2021, 10 a.m. N/A 3.9 ppb (4) N/A 7.0 ppb (7) N/A N/A 3.0 ppb (3) N/A 10.0 μg/m3 (10) 5.1 μg/m3 (22) 22.0
 
Sept. 22, 2021, 9 a.m. N/A 3.4 ppb (4) N/A 5.0 ppb (5) N/A N/A 4.0 ppb (4) N/A 8.0 μg/m3 (8) 4.1 μg/m3 (18) 18.0
 
Sept. 22, 2021, 8 a.m. N/A 3.1 ppb (3) N/A 5.0 ppb (5) N/A N/A 6.0 ppb (6) N/A 8.0 μg/m3 (8) 4.0 μg/m3 (17) 17.0
 
Sept. 22, 2021, 7 a.m. N/A 4.8 ppb (5) N/A 7.0 ppb (7) N/A N/A 4.0 ppb (4) N/A 11.0 μg/m3 (11) 14.0 μg/m3 (55) 55.0
 
Sept. 22, 2021, 6 a.m. N/A 3.6 ppb (4) N/A 8.0 ppb (8) N/A N/A 6.0 ppb (6) N/A 8.0 μg/m3 (8) 5.7 μg/m3 (24) 24.0
 
Sept. 22, 2021, 5 a.m. N/A 0.7 ppb (1) N/A 4.0 ppb (4) N/A N/A 16.0 ppb (15) N/A 7.0 μg/m3 (7) 5.0 μg/m3 (21) 21.0
 
Sept. 22, 2021, 4 a.m. N/A 0.5 ppb (1) N/A 4.0 ppb (4) N/A N/A 17.0 ppb (16) N/A 7.0 μg/m3 (7) 4.4 μg/m3 (19) 19.0
 
Sept. 22, 2021, 3 a.m. N/A 0.4 ppb (1) N/A 3.0 ppb (3) N/A N/A 21.0 ppb (20) N/A 3.0 μg/m3 (3) 3.4 μg/m3 (15) 20.0
 
Sept. 22, 2021, 2 a.m. N/A 0.2 ppb (1) N/A 2.0 ppb (2) N/A N/A 24.0 ppb (23) N/A 6.0 μg/m3 (6) 2.1 μg/m3 (9) 23.0
 
Sept. 22, 2021, 1 a.m. N/A 0.5 ppb (1) N/A 3.0 ppb (3) N/A N/A 22.0 ppb (21) N/A 3.0 μg/m3 (3) 2.2 μg/m3 (10) 21.0
 
Sept. 22, 2021, midnight N/A 0.6 ppb (1) N/A 4.0 ppb (4) N/A N/A 25.0 ppb (24) N/A 2.0 μg/m3 (2) 2.8 μg/m3 (12) 24.0
 
Sept. 21, 2021, 11 p.m. N/A 0.5 ppb (1) N/A 3.0 ppb (3) N/A N/A 29.0 ppb (27) N/A 4.0 μg/m3 (4) 1.8 μg/m3 (8) 27.0
 
Sept. 21, 2021, 10 p.m. N/A 0.2 ppb (1) N/A 2.0 ppb (2) N/A N/A 30.0 ppb (28) N/A 7.0 μg/m3 (7) 1.7 μg/m3 (8) 28.0
 
Sept. 21, 2021, 9 p.m. N/A 0.5 ppb (1) N/A 4.0 ppb (4) N/A N/A 29.0 ppb (27) N/A 6.0 μg/m3 (6) 2.9 μg/m3 (13) 27.0
 
Sept. 21, 2021, 8 p.m. N/A 1.2 ppb (2) N/A 3.0 ppb (3) N/A N/A 24.0 ppb (23) N/A 6.0 μg/m3 (6) 2.8 μg/m3 (12) 23.0
 
Sept. 21, 2021, 7 p.m. N/A 1.0 ppb (1) N/A 4.0 ppb (4) N/A N/A 20.0 ppb (19) N/A 4.0 μg/m3 (4) 2.6 μg/m3 (11) 19.0
 
Sept. 21, 2021, 6 p.m. N/A 1.7 ppb (2) N/A 6.0 ppb (6) N/A N/A 18.0 ppb (17) N/A 5.0 μg/m3 (5) 3.2 μg/m3 (14) 17.0
 
Sept. 21, 2021, 5 p.m. N/A 2.5 ppb (3) N/A 6.0 ppb (6) N/A N/A 14.0 ppb (13) N/A 8.0 μg/m3 (8) 3.7 μg/m3 (16) 16.0
 
Sept. 21, 2021, 4 p.m. N/A 3.3 ppb (4) N/A 8.0 ppb (8) N/A N/A 12.0 ppb (12) N/A 7.0 μg/m3 (7) 4.2 μg/m3 (18) 18.0
 
Sept. 21, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 4.0 μg/m3 (4) 2.7 μg/m3 (12) 12.0
 
Sept. 21, 2021, 2 p.m. N/A 2.0 ppb (2) N/A 8.0 ppb (8) N/A N/A 11.0 ppb (11) N/A 2.0 μg/m3 (2) 2.2 μg/m3 (10) 11.0
 
Sept. 21, 2021, 1 p.m. N/A 2.2 ppb (3) N/A 6.0 ppb (6) N/A N/A 11.0 ppb (11) N/A 5.0 μg/m3 (5) 2.1 μg/m3 (9) 11.0
 
Sept. 21, 2021, noon N/A 1.0 ppb (1) N/A 3.0 ppb (3) N/A N/A 16.0 ppb (15) N/A 3.0 μg/m3 (3) 1.8 μg/m3 (8) 15.0
 
Sept. 21, 2021, 11 a.m. N/A 1.7 ppb (2) N/A 4.0 ppb (4) N/A N/A 14.0 ppb (13) N/A 3.0 μg/m3 (3) 1.9 μg/m3 (8) 13.0
 
Sept. 21, 2021, 10 a.m. N/A 2.9 ppb (3) N/A 3.0 ppb (3) N/A N/A 8.0 ppb (8) N/A 10.0 μg/m3 (10) 4.8 μg/m3 (20) 20.0
 
Sept. 21, 2021, 9 a.m. N/A 1.2 ppb (2) N/A 2.0 ppb (2) N/A N/A 8.0 ppb (8) N/A 3.0 μg/m3 (3) 4.5 μg/m3 (19) 19.0
 
Sept. 21, 2021, 8 a.m. N/A 1.7 ppb (2) N/A 3.0 ppb (3) N/A N/A 9.0 ppb (9) N/A 0.0 μg/m3 (0) 4.5 μg/m3 (19) 19.0
 
Sept. 21, 2021, 7 a.m. N/A 2.8 ppb (3) N/A 2.0 ppb (2) N/A N/A 9.0 ppb (9) N/A 8.0 μg/m3 (8) 4.2 μg/m3 (18) 18.0
 
Sept. 21, 2021, 6 a.m. N/A 1.9 ppb (2) N/A 3.0 ppb (3) N/A N/A 6.0 ppb (6) N/A 13.0 μg/m3 (13) 8.3 μg/m3 (35) 35.0
 
Sept. 21, 2021, 5 a.m. N/A 1.8 ppb (2) N/A 2.0 ppb (2) N/A N/A 7.0 ppb (7) N/A 15.0 μg/m3 (14) 9.4 μg/m3 (40) 40.0
 
Sept. 21, 2021, 4 a.m. N/A 1.1 ppb (2) N/A 2.0 ppb (2) N/A N/A 14.0 ppb (13) N/A 13.0 μg/m3 (13) 10.9 μg/m3 (46) 46.0
 
Sept. 21, 2021, 3 a.m. N/A 1.2 ppb (2) N/A 3.0 ppb (3) N/A N/A 14.0 ppb (13) N/A 19.0 μg/m3 (18) 12.4 μg/m3 (52) 52.0
 
Sept. 21, 2021, 2 a.m. N/A 1.3 ppb (2) N/A 3.0 ppb (3) N/A N/A 14.0 ppb (13) N/A 28.0 μg/m3 (26) 20.3 μg/m3 (69) 69.0
 
Sept. 21, 2021, 1 a.m. N/A 2.1 ppb (2) N/A 5.0 ppb (5) N/A N/A 15.0 ppb (14) N/A 23.0 μg/m3 (22) 24.1 μg/m3 (77) 77.0
 
Sept. 21, 2021, midnight N/A 0.9 ppb (1) N/A 3.0 ppb (3) N/A N/A 18.0 ppb (17) N/A 15.0 μg/m3 (14) 16.1 μg/m3 (60) 60.0
 
Sept. 20, 2021, 11 p.m. N/A 1.5 ppb (2) N/A 3.0 ppb (3) N/A N/A 18.0 ppb (17) N/A 8.0 μg/m3 (8) 10.0 μg/m3 (42) 42.0
 
Sept. 20, 2021, 10 p.m. N/A 0.9 ppb (1) N/A 2.0 ppb (2) N/A N/A 17.0 ppb (16) N/A 7.0 μg/m3 (7) 10.1 μg/m3 (43) 43.0
 
Sept. 20, 2021, 9 p.m. N/A 0.7 ppb (1) N/A 2.0 ppb (2) N/A N/A 18.0 ppb (17) N/A 15.0 μg/m3 (14) 8.0 μg/m3 (34) 34.0
 
Sept. 20, 2021, 8 p.m. N/A 1.8 ppb (2) N/A 4.0 ppb (4) N/A N/A 14.0 ppb (13) N/A 14.0 μg/m3 (13) 15.2 μg/m3 (58) 58.0
 
Sept. 20, 2021, 7 p.m. N/A 2.4 ppb (3) N/A 4.0 ppb (4) N/A N/A 12.0 ppb (12) N/A 10.0 μg/m3 (10) 12.5 μg/m3 (52) 52.0
 
Sept. 20, 2021, 6 p.m. N/A 1.3 ppb (2) N/A 2.0 ppb (2) N/A N/A 12.0 ppb (12) N/A 4.0 μg/m3 (4) 3.0 μg/m3 (13) 13.0
 
Sept. 20, 2021, 5 p.m. N/A 2.0 ppb (2) N/A 2.0 ppb (2) N/A N/A 10.0 ppb (10) N/A 3.0 μg/m3 (3) 3.2 μg/m3 (14) 14.0
 
Sept. 20, 2021, 4 p.m. N/A 3.5 ppb (4) N/A 3.0 ppb (3) N/A N/A 8.0 ppb (8) N/A 10.0 μg/m3 (10) 2.9 μg/m3 (13) 13.0
 
Sept. 20, 2021, 3 p.m. N/A 9.8 ppb (10) N/A 6.0 ppb (6) N/A N/A 2.0 ppb (2) N/A 13.0 μg/m3 (13) 2.4 μg/m3 (10) 13.0
 
Sept. 20, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 10.0 μg/m3 (10) 2.1 μg/m3 (9) 10.0
 
Sept. 20, 2021, 1 p.m. N/A 5.2 ppb (5) N/A 3.0 ppb (3) N/A N/A 2.0 ppb (2) N/A 10.0 μg/m3 (10) 2.0 μg/m3 (9) 10.0
 
Sept. 20, 2021, noon N/A 8.7 ppb (9) N/A 4.0 ppb (4) N/A N/A 1.0 ppb (1) N/A 6.0 μg/m3 (6) 2.6 μg/m3 (11) 11.0
 
Sept. 20, 2021, 11 a.m. N/A 4.9 ppb (5) N/A 2.0 ppb (2) N/A N/A 4.0 ppb (4) N/A 9.0 μg/m3 (9) 2.4 μg/m3 (10) 10.0
 
Sept. 20, 2021, 10 a.m. N/A 9.4 ppb (9) N/A 4.0 ppb (4) N/A N/A 1.0 ppb (1) N/A 7.0 μg/m3 (7) 4.0 μg/m3 (17) 17.0
 
Sept. 20, 2021, 9 a.m. N/A 7.5 ppb (8) N/A 4.0 ppb (4) N/A N/A 1.0 ppb (1) N/A 5.0 μg/m3 (5) 5.3 μg/m3 (23) 23.0
 
Sept. 20, 2021, 8 a.m. N/A 9.1 ppb (9) N/A 4.0 ppb (4) N/A N/A 1.0 ppb (1) N/A 2.0 μg/m3 (2) 3.2 μg/m3 (14) 14.0
 
Sept. 20, 2021, 7 a.m. N/A 10.6 ppb (10) N/A 6.0 ppb (6) N/A N/A 1.0 ppb (1) N/A 9.0 μg/m3 (9) 3.6 μg/m3 (16) 16.0
 
Sept. 20, 2021, 6 a.m. N/A 8.8 ppb (9) N/A 5.0 ppb (5) N/A N/A 1.0 ppb (1) N/A 9.0 μg/m3 (9) 4.3 μg/m3 (18) 18.0
 
Sept. 20, 2021, 5 a.m. N/A 9.1 ppb (9) N/A 5.0 ppb (5) N/A N/A 1.0 ppb (1) N/A 11.0 μg/m3 (11) 3.6 μg/m3 (16) 16.0
 
Sept. 20, 2021, 4 a.m. N/A 11.6 ppb (11) N/A 7.0 ppb (7) N/A N/A 1.0 ppb (1) N/A 13.0 μg/m3 (13) 5.5 μg/m3 (23) 23.0
 
Sept. 20, 2021, 3 a.m. N/A 9.1 ppb (9) N/A 6.0 ppb (6) N/A N/A 1.0 ppb (1) N/A 15.0 μg/m3 (14) 6.7 μg/m3 (28) 28.0
 
Sept. 20, 2021, 2 a.m. N/A 7.0 ppb (7) N/A 8.0 ppb (8) N/A N/A 5.0 ppb (5) N/A 10.0 μg/m3 (10) 3.2 μg/m3 (14) 14.0
 
Sept. 20, 2021, 1 a.m. N/A 4.3 ppb (5) N/A 7.0 ppb (7) N/A N/A 9.0 ppb (9) N/A 7.0 μg/m3 (7) 2.1 μg/m3 (9) 9.0
 
Sept. 20, 2021, midnight N/A 1.5 ppb (2) N/A 3.0 ppb (3) N/A N/A 17.0 ppb (16) N/A 15.0 μg/m3 (14) 1.3 μg/m3 (6) 16.0
 
Sept. 19, 2021, 11 p.m. N/A 1.6 ppb (2) N/A 4.0 ppb (4) N/A N/A 15.0 ppb (14) N/A 12.0 μg/m3 (12) 1.6 μg/m3 (7) 14.0
 
Sept. 19, 2021, 10 p.m. N/A 2.3 ppb (3) N/A 3.0 ppb (3) N/A N/A 15.0 ppb (14) N/A 3.0 μg/m3 (3) 1.4 μg/m3 (6) 14.0
 
Sept. 19, 2021, 9 p.m. N/A 2.7 ppb (3) N/A 3.0 ppb (3) N/A N/A 13.0 ppb (13) N/A 5.0 μg/m3 (5) 1.3 μg/m3 (6) 13.0
 
Sept. 19, 2021, 8 p.m. N/A 2.3 ppb (3) N/A 3.0 ppb (3) N/A N/A 10.0 ppb (10) N/A 6.0 μg/m3 (6) 1.5 μg/m3 (7) 10.0
 
Sept. 19, 2021, 7 p.m. N/A 3.3 ppb (4) N/A 3.0 ppb (3) N/A N/A 10.0 ppb (10) N/A 8.0 μg/m3 (8) 1.7 μg/m3 (8) 10.0
 
Sept. 19, 2021, 6 p.m. N/A 4.7 ppb (5) N/A 3.0 ppb (3) N/A N/A 8.0 ppb (8) N/A 8.0 μg/m3 (8) 2.9 μg/m3 (13) 13.0
 
Sept. 19, 2021, 5 p.m. N/A 8.4 ppb (8) N/A 4.0 ppb (4) N/A N/A 4.0 ppb (4) N/A 3.0 μg/m3 (3) 2.6 μg/m3 (11) 11.0
 
Sept. 19, 2021, 4 p.m. N/A 8.4 ppb (8) N/A 4.0 ppb (4) N/A N/A 3.0 ppb (3) N/A 5.0 μg/m3 (5) 2.1 μg/m3 (9) 9.0
 
Sept. 19, 2021, 3 p.m. N/A 6.7 ppb (7) N/A 4.0 ppb (4) N/A N/A 2.0 ppb (2) N/A 7.0 μg/m3 (7) 3.5 μg/m3 (15) 15.0
 
Sept. 19, 2021, 2 p.m. N/A 5.0 ppb (5) N/A 3.0 ppb (3) N/A N/A 3.0 ppb (3) N/A 2.0 μg/m3 (2) 2.6 μg/m3 (11) 11.0
 
Sept. 19, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 3.0 μg/m3 (3) 2.7 μg/m3 (12) 12.0
 
Sept. 19, 2021, noon N/A 3.5 ppb (4) N/A 3.0 ppb (3) N/A N/A 2.0 ppb (2) N/A 5.0 μg/m3 (5) 2.4 μg/m3 (10) 10.0
 
Sept. 19, 2021, 11 a.m. N/A 3.8 ppb (4) N/A 3.0 ppb (3) N/A N/A 3.0 ppb (3) N/A 7.0 μg/m3 (7) 3.4 μg/m3 (15) 15.0
 
Sept. 19, 2021, 10 a.m. N/A 6.5 ppb (7) N/A 5.0 ppb (5) N/A N/A 2.0 ppb (2) N/A 10.0 μg/m3 (10) 2.9 μg/m3 (13) 13.0
 
Sept. 19, 2021, 9 a.m. N/A 2.9 ppb (3) N/A 3.0 ppb (3) N/A N/A 6.0 ppb (6) N/A 11.0 μg/m3 (11) 3.7 μg/m3 (16) 16.0
 
Sept. 19, 2021, 8 a.m. N/A 3.8 ppb (4) N/A 2.0 ppb (2) N/A N/A 4.0 ppb (4) N/A 17.0 μg/m3 (16) 4.8 μg/m3 (20) 20.0
 
Sept. 19, 2021, 7 a.m. N/A 4.4 ppb (5) N/A 3.0 ppb (3) N/A N/A 3.0 ppb (3) N/A 8.0 μg/m3 (8) 5.4 μg/m3 (23) 23.0
 
Sept. 19, 2021, 6 a.m. N/A 6.8 ppb (7) N/A 3.0 ppb (3) N/A N/A 1.0 ppb (1) N/A 7.0 μg/m3 (7) 3.0 μg/m3 (13) 13.0
 
Sept. 19, 2021, 5 a.m. N/A 9.4 ppb (9) N/A 3.0 ppb (3) N/A N/A 1.0 ppb (1) N/A 7.0 μg/m3 (7) 2.4 μg/m3 (10) 10.0
 
Sept. 19, 2021, 4 a.m. N/A 9.5 ppb (9) N/A 7.0 ppb (7) N/A N/A 1.0 ppb (1) N/A 8.0 μg/m3 (8) 3.3 μg/m3 (14) 14.0
 
Sept. 19, 2021, 3 a.m. N/A 6.2 ppb (6) N/A 6.0 ppb (6) N/A N/A 3.0 ppb (3) N/A 8.0 μg/m3 (8) 4.4 μg/m3 (19) 19.0
 
Sept. 19, 2021, 2 a.m. N/A 5.7 ppb (6) N/A 6.0 ppb (6) N/A N/A 7.0 ppb (7) N/A 8.0 μg/m3 (8) 2.7 μg/m3 (12) 12.0
 
Sept. 19, 2021, 1 a.m. N/A 7.3 ppb (7) N/A 8.0 ppb (8) N/A N/A 6.0 ppb (6) N/A 7.0 μg/m3 (7) 3.2 μg/m3 (14) 14.0
 
Sept. 19, 2021, midnight N/A 7.0 ppb (7) N/A 7.0 ppb (7) N/A N/A 9.0 ppb (9) N/A 9.0 μg/m3 (9) 2.6 μg/m3 (11) 11.0
 
Sept. 18, 2021, 11 p.m. N/A 4.8 ppb (5) N/A 5.0 ppb (5) N/A N/A 11.0 ppb (11) N/A 6.0 μg/m3 (6) 2.2 μg/m3 (10) 11.0
 
Sept. 18, 2021, 10 p.m. N/A 5.7 ppb (6) N/A 5.0 ppb (5) N/A N/A 13.0 ppb (13) N/A 5.0 μg/m3 (5) 2.2 μg/m3 (10) 13.0
 
Sept. 18, 2021, 9 p.m. N/A 6.4 ppb (7) N/A 5.0 ppb (5) N/A N/A 13.0 ppb (13) N/A 2.0 μg/m3 (2) 1.7 μg/m3 (8) 13.0
 
Sept. 18, 2021, 8 p.m. N/A 6.5 ppb (7) N/A 5.0 ppb (5) N/A N/A 15.0 ppb (14) N/A 5.0 μg/m3 (5) 1.9 μg/m3 (8) 14.0
 
Sept. 18, 2021, 7 p.m. N/A 5.9 ppb (6) N/A 5.0 ppb (5) N/A N/A 11.0 ppb (11) N/A 3.0 μg/m3 (3) 2.1 μg/m3 (9) 11.0
 
Sept. 18, 2021, 6 p.m. N/A 9.5 ppb (9) N/A 8.0 ppb (8) N/A N/A 11.0 ppb (11) N/A 2.0 μg/m3 (2) 1.9 μg/m3 (8) 11.0
 
Sept. 18, 2021, 5 p.m. N/A 10.5 ppb (10) N/A 8.0 ppb (8) N/A N/A 8.0 ppb (8) N/A 4.0 μg/m3 (4) 1.7 μg/m3 (8) 10.0
 
Sept. 18, 2021, 4 p.m. N/A 10.8 ppb (11) N/A 8.0 ppb (8) N/A N/A 8.0 ppb (8) N/A 8.0 μg/m3 (8) 1.4 μg/m3 (6) 11.0
 
Sept. 18, 2021, 3 p.m. N/A 12.9 ppb (13) N/A 7.0 ppb (7) N/A N/A 3.0 ppb (3) N/A 3.0 μg/m3 (3) 2.1 μg/m3 (9) 13.0
 
Sept. 18, 2021, 2 p.m. N/A 11.2 ppb (11) N/A 5.0 ppb (5) N/A N/A 1.0 ppb (1) N/A 2.0 μg/m3 (2) 2.0 μg/m3 (9) 11.0
 
Sept. 18, 2021, 1 p.m. N/A 6.0 ppb (6) N/A 3.0 ppb (3) N/A N/A 2.0 ppb (2) N/A 3.0 μg/m3 (3) 2.3 μg/m3 (10) 10.0
 
Sept. 18, 2021, noon N/A N/A N/A N/A N/A N/A N/A N/A 2.0 μg/m3 (2) 2.2 μg/m3 (10) 10.0
 
Sept. 18, 2021, 11 a.m. N/A 11.1 ppb (11) N/A 5.0 ppb (5) N/A N/A 1.0 ppb (1) N/A 7.0 μg/m3 (7) 2.7 μg/m3 (12) 12.0
 
Sept. 18, 2021, 10 a.m. N/A 7.0 ppb (7) N/A 4.0 ppb (4) N/A N/A 2.0 ppb (2) N/A 6.0 μg/m3 (6) 2.8 μg/m3 (12) 12.0
 
Sept. 18, 2021, 9 a.m. N/A 6.0 ppb (6) N/A 4.0 ppb (4) N/A N/A 3.0 ppb (3) N/A 4.0 μg/m3 (4) 2.8 μg/m3 (12) 12.0
 
Sept. 18, 2021, 8 a.m. N/A 5.3 ppb (5) N/A 4.0 ppb (4) N/A N/A 4.0 ppb (4) N/A 9.0 μg/m3 (9) 3.1 μg/m3 (13) 13.0