ID: 5327

AQSQID: 000107100

Site Name: Courtenay Elementary School

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

Updated: Oct. 19, 2021, 12:04 p.m.

Location: Courtenay (Grieve Ave), CC

Reporting: True, Located: True

Current AQI: 3.0

Courtenay (Grieve Ave) CC, CA: 49.682499, -124.996101

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
Oct. 19, 2021, 10 a.m. N/A 2.5 ppb (3) N/A 0.0 ppb (0) N/A N/A 2.0 ppb (2) N/A N/A N/A 3.0
 
Oct. 19, 2021, 9 a.m. N/A 2.5 ppb (3) N/A 0.0 ppb (0) N/A N/A 2.0 ppb (2) N/A N/A N/A 3.0
 
Oct. 19, 2021, 8 a.m. N/A 2.9 ppb (3) N/A 1.0 ppb (1) N/A N/A 3.0 ppb (3) N/A N/A N/A 3.0
 
Oct. 19, 2021, 7 a.m. N/A 2.9 ppb (3) N/A 1.0 ppb (1) N/A N/A 3.0 ppb (3) N/A N/A N/A 3.0
 
Oct. 19, 2021, 6 a.m. N/A 2.4 ppb (3) N/A 2.0 ppb (2) N/A N/A 3.0 ppb (3) N/A N/A N/A 3.0
 
Oct. 19, 2021, 5 a.m. N/A 4.3 ppb (5) N/A 2.0 ppb (2) N/A N/A 3.0 ppb (3) N/A N/A N/A 5.0
 
Oct. 19, 2021, 4 a.m. N/A 4.9 ppb (5) N/A 4.0 ppb (4) N/A N/A 3.0 ppb (3) N/A N/A N/A 5.0
 
Oct. 19, 2021, 3 a.m. N/A 3.1 ppb (3) N/A 6.0 ppb (6) N/A N/A 3.0 ppb (3) N/A N/A N/A 6.0
 
Oct. 19, 2021, 2 a.m. N/A 3.5 ppb (4) N/A 10.0 ppb (10) N/A N/A 6.0 ppb (6) N/A N/A N/A 10.0
 
Oct. 19, 2021, 1 a.m. N/A 0.4 ppb (1) N/A 6.0 ppb (6) N/A N/A 21.0 ppb (20) N/A N/A N/A 20.0
 
Oct. 19, 2021, midnight N/A 0.8 ppb (1) N/A 3.0 ppb (3) N/A N/A 27.0 ppb (25) N/A N/A N/A 25.0
 
Oct. 18, 2021, 11 p.m. N/A 0.7 ppb (1) N/A 1.0 ppb (1) N/A N/A 29.0 ppb (27) N/A N/A N/A 27.0
 
Oct. 18, 2021, 10 p.m. N/A 0.6 ppb (1) N/A 1.0 ppb (1) N/A N/A 31.0 ppb (29) N/A N/A N/A 29.0
 
Oct. 18, 2021, 9 p.m. N/A 0.6 ppb (1) N/A 1.0 ppb (1) N/A N/A 32.0 ppb (30) N/A N/A N/A 30.0
 
Oct. 18, 2021, 8 p.m. N/A 0.8 ppb (1) N/A 1.0 ppb (1) N/A N/A 26.0 ppb (25) N/A N/A N/A 25.0
 
Oct. 18, 2021, 6 p.m. N/A 1.6 ppb (2) N/A 2.0 ppb (2) N/A N/A 24.0 ppb (23) N/A N/A N/A 23.0
 
Oct. 18, 2021, 5 p.m. N/A 18.2 ppb (18) N/A 8.0 ppb (8) N/A N/A 9.0 ppb (9) N/A N/A N/A 18.0
 
Oct. 18, 2021, 4 p.m. N/A 15.1 ppb (15) N/A 3.0 ppb (3) N/A N/A 3.0 ppb (3) N/A N/A N/A 15.0
 
Oct. 18, 2021, 3 p.m. N/A 38.7 ppb (37) N/A 5.0 ppb (5) N/A N/A 2.0 ppb (2) N/A N/A N/A 37.0
 
Oct. 18, 2021, 2 p.m. N/A 34.4 ppb (33) N/A 4.0 ppb (4) N/A N/A 2.0 ppb (2) N/A N/A N/A 33.0
 
Oct. 18, 2021, 1 p.m. N/A 8.6 ppb (9) N/A 2.0 ppb (2) N/A N/A 1.0 ppb (1) N/A N/A N/A 9.0
 
Oct. 18, 2021, noon N/A 3.2 ppb (4) N/A 1.0 ppb (1) N/A N/A 2.0 ppb (2) N/A N/A N/A 4.0
 
Oct. 18, 2021, 11 a.m. N/A 2.7 ppb (3) N/A 1.0 ppb (1) N/A N/A 2.0 ppb (2) N/A N/A N/A 3.0
 
Oct. 18, 2021, 10 a.m. N/A 2.0 ppb (2) N/A 1.0 ppb (1) N/A N/A 2.0 ppb (2) N/A N/A N/A 2.0
 
Oct. 18, 2021, 9 a.m. N/A 2.1 ppb (2) N/A 1.0 ppb (1) N/A N/A 4.0 ppb (4) N/A N/A N/A 4.0
 
Oct. 18, 2021, 8 a.m. N/A 0.9 ppb (1) N/A 1.0 ppb (1) N/A N/A 3.0 ppb (3) N/A N/A N/A 3.0
 
Oct. 18, 2021, 7 a.m. N/A 1.1 ppb (2) N/A 2.0 ppb (2) N/A N/A 4.0 ppb (4) N/A N/A N/A 4.0
 
Oct. 18, 2021, 6 a.m. N/A 1.4 ppb (2) N/A 2.0 ppb (2) N/A N/A 4.0 ppb (4) N/A N/A N/A 4.0
 
Oct. 18, 2021, 5 a.m. N/A 0.7 ppb (1) N/A 3.0 ppb (3) N/A N/A 5.0 ppb (5) N/A N/A N/A 5.0
 
Oct. 18, 2021, 4 a.m. N/A 1.4 ppb (2) N/A 5.0 ppb (5) N/A N/A 6.0 ppb (6) N/A N/A N/A 6.0
 
Oct. 18, 2021, 3 a.m. N/A 0.5 ppb (1) N/A 4.0 ppb (4) N/A N/A 10.0 ppb (10) N/A N/A N/A 10.0
 
Oct. 18, 2021, 2 a.m. N/A 0.1 ppb (1) N/A 4.0 ppb (4) N/A N/A 14.0 ppb (13) N/A N/A N/A 13.0
 
Oct. 18, 2021, 1 a.m. N/A 0.3 ppb (1) N/A 2.0 ppb (2) N/A N/A 23.0 ppb (22) N/A N/A N/A 22.0
 
Oct. 18, 2021, midnight N/A 0.1 ppb (1) N/A 1.0 ppb (1) N/A N/A 30.0 ppb (28) N/A N/A N/A 28.0
 
Oct. 17, 2021, 11 p.m. N/A 0.4 ppb (1) N/A 1.0 ppb (1) N/A N/A 30.0 ppb (28) N/A N/A N/A 28.0
 
Oct. 17, 2021, 10 p.m. N/A 0.5 ppb (1) N/A 1.0 ppb (1) N/A N/A 31.0 ppb (29) N/A N/A N/A 29.0
 
Oct. 17, 2021, 9 p.m. N/A 0.4 ppb (1) N/A 0.0 ppb (0) N/A N/A 32.0 ppb (30) N/A N/A N/A 30.0
 
Oct. 17, 2021, 7 p.m. N/A 0.3 ppb (1) N/A 0.0 ppb (0) N/A N/A 36.0 ppb (34) N/A N/A N/A 34.0
 
Oct. 17, 2021, 6 p.m. N/A 0.2 ppb (1) N/A 0.0 ppb (0) N/A N/A 37.0 ppb (35) N/A N/A N/A 35.0
 
Oct. 17, 2021, 5 p.m. N/A 0.1 ppb (1) N/A 0.0 ppb (0) N/A N/A 36.0 ppb (34) N/A N/A N/A 34.0
 
Oct. 17, 2021, 4 p.m. N/A 0.3 ppb (1) N/A 0.0 ppb (0) N/A N/A 35.0 ppb (33) N/A N/A N/A 33.0
 
Oct. 17, 2021, 3 p.m. N/A 0.1 ppb (1) N/A 0.0 ppb (0) N/A N/A 34.0 ppb (32) N/A N/A N/A 32.0
 
Oct. 17, 2021, 2 p.m. N/A 0.1 ppb (1) N/A 0.0 ppb (0) N/A N/A 33.0 ppb (31) N/A N/A N/A 31.0
 
Oct. 17, 2021, 1 p.m. N/A 0.0 ppb (0) N/A 0.0 ppb (0) N/A N/A 26.0 ppb (25) N/A N/A N/A 25.0
 
Oct. 17, 2021, noon N/A 0.1 ppb (1) N/A 0.0 ppb (0) N/A N/A 17.0 ppb (16) N/A N/A N/A 16.0
 
Oct. 17, 2021, 11 a.m. N/A -0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 19.0 ppb (18) N/A N/A N/A 18.0
 
Oct. 17, 2021, 10 a.m. N/A 0.2 ppb (1) N/A 3.0 ppb (3) N/A N/A 17.0 ppb (16) N/A N/A N/A 16.0
 
Oct. 17, 2021, 9 a.m. N/A 0.1 ppb (1) N/A 2.0 ppb (2) N/A N/A 19.0 ppb (18) N/A N/A N/A 18.0
 
Oct. 17, 2021, 8 a.m. N/A 0.0 ppb (0) N/A 2.0 ppb (2) N/A N/A 19.0 ppb (18) N/A N/A N/A 18.0
 
Oct. 17, 2021, 7 a.m. N/A 0.2 ppb (1) N/A 3.0 ppb (3) N/A N/A 20.0 ppb (19) N/A N/A N/A 19.0
 
Oct. 17, 2021, 6 a.m. N/A -0.1 ppb (0) N/A 2.0 ppb (2) N/A N/A 24.0 ppb (23) N/A N/A N/A 23.0
 
Oct. 17, 2021, 5 a.m. N/A 0.1 ppb (1) N/A 2.0 ppb (2) N/A N/A 24.0 ppb (23) N/A N/A N/A 23.0
 
Oct. 17, 2021, 4 a.m. N/A 0.5 ppb (1) N/A 5.0 ppb (5) N/A N/A 23.0 ppb (22) N/A N/A N/A 22.0
 
Oct. 17, 2021, 3 a.m. N/A 0.3 ppb (1) N/A 5.0 ppb (5) N/A N/A 20.0 ppb (19) N/A N/A N/A 19.0
 
Oct. 17, 2021, 2 a.m. N/A 0.5 ppb (1) N/A 6.0 ppb (6) N/A N/A 24.0 ppb (23) N/A N/A N/A 23.0
 
Oct. 17, 2021, 1 a.m. N/A 0.5 ppb (1) N/A 5.0 ppb (5) N/A N/A 27.0 ppb (25) N/A N/A N/A 25.0
 
Oct. 17, 2021, midnight N/A 0.3 ppb (1) N/A 6.0 ppb (6) N/A N/A 25.0 ppb (24) N/A N/A N/A 24.0
 
Oct. 16, 2021, 11 p.m. N/A 0.5 ppb (1) N/A 6.0 ppb (6) N/A N/A 22.0 ppb (21) N/A N/A N/A 21.0
 
Oct. 16, 2021, 10 p.m. N/A 0.5 ppb (1) N/A 6.0 ppb (6) N/A N/A 22.0 ppb (21) N/A N/A N/A 21.0
 
Oct. 16, 2021, 8 p.m. N/A 1.0 ppb (1) N/A 5.0 ppb (5) N/A N/A 23.0 ppb (22) N/A N/A N/A 22.0
 
Oct. 16, 2021, 7 p.m. N/A 1.0 ppb (1) N/A 5.0 ppb (5) N/A N/A 24.0 ppb (23) N/A N/A N/A 23.0
 
Oct. 16, 2021, 6 p.m. N/A 0.6 ppb (1) N/A 5.0 ppb (5) N/A N/A 24.0 ppb (23) N/A N/A N/A 23.0
 
Oct. 16, 2021, 5 p.m. N/A 0.6 ppb (1) N/A 4.0 ppb (4) N/A N/A 26.0 ppb (25) N/A N/A N/A 25.0
 
Oct. 16, 2021, 4 p.m. N/A 0.6 ppb (1) N/A 3.0 ppb (3) N/A N/A 27.0 ppb (25) N/A N/A N/A 25.0
 
Oct. 16, 2021, 3 p.m. N/A 0.4 ppb (1) N/A 2.0 ppb (2) N/A N/A 28.0 ppb (26) N/A N/A N/A 26.0
 
Oct. 16, 2021, 2 p.m. N/A 0.1 ppb (1) N/A 2.0 ppb (2) N/A N/A 27.0 ppb (25) N/A N/A N/A 25.0
 
Oct. 16, 2021, 1 p.m. N/A 0.2 ppb (1) N/A 2.0 ppb (2) N/A N/A 26.0 ppb (25) N/A N/A N/A 25.0
 
Oct. 16, 2021, noon N/A 0.1 ppb (1) N/A 2.0 ppb (2) N/A N/A 27.0 ppb (25) N/A N/A N/A 25.0
 
Oct. 16, 2021, 11 a.m. N/A -0.1 ppb (0) N/A 2.0 ppb (2) N/A N/A 28.0 ppb (26) N/A N/A N/A 26.0
 
Oct. 16, 2021, 10 a.m. N/A 0.1 ppb (1) N/A 2.0 ppb (2) N/A N/A 29.0 ppb (27) N/A N/A N/A 27.0
 
Oct. 16, 2021, 9 a.m. N/A 0.1 ppb (1) N/A 2.0 ppb (2) N/A N/A 29.0 ppb (27) N/A N/A N/A 27.0
 
Oct. 16, 2021, 8 a.m. N/A 0.2 ppb (1) N/A 3.0 ppb (3) N/A N/A 29.0 ppb (27) N/A N/A N/A 27.0
 
Oct. 16, 2021, 7 a.m. N/A 0.3 ppb (1) N/A 3.0 ppb (3) N/A N/A 28.0 ppb (26) N/A N/A N/A 26.0
 
Oct. 16, 2021, 6 a.m. N/A 0.2 ppb (1) N/A 4.0 ppb (4) N/A N/A 27.0 ppb (25) N/A N/A N/A 25.0
 
Oct. 16, 2021, 5 a.m. N/A 0.1 ppb (1) N/A 4.0 ppb (4) N/A N/A 26.0 ppb (25) N/A N/A N/A 25.0
 
Oct. 16, 2021, 4 a.m. N/A 0.1 ppb (1) N/A 5.0 ppb (5) N/A N/A 25.0 ppb (24) N/A N/A N/A 24.0
 
Oct. 16, 2021, 3 a.m. N/A 0.1 ppb (1) N/A 4.0 ppb (4) N/A N/A 26.0 ppb (25) N/A N/A N/A 25.0
 
Oct. 16, 2021, 2 a.m. N/A 0.4 ppb (1) N/A 4.0 ppb (4) N/A N/A 26.0 ppb (25) N/A N/A N/A 25.0
 
Oct. 16, 2021, 1 a.m. N/A 0.2 ppb (1) N/A 4.0 ppb (4) N/A N/A 26.0 ppb (25) N/A N/A N/A 25.0
 
Oct. 16, 2021, midnight N/A 0.4 ppb (1) N/A 4.0 ppb (4) N/A N/A 25.0 ppb (24) N/A N/A N/A 24.0
 
Oct. 15, 2021, 11 p.m. N/A 0.5 ppb (1) N/A 5.0 ppb (5) N/A N/A 25.0 ppb (24) N/A N/A N/A 24.0
 
Oct. 15, 2021, 9 p.m. N/A 1.7 ppb (2) N/A 5.0 ppb (5) N/A N/A 22.0 ppb (21) N/A N/A N/A 21.0
 
Oct. 15, 2021, 8 p.m. N/A 0.5 ppb (1) N/A 4.0 ppb (4) N/A N/A 21.0 ppb (20) N/A N/A N/A 20.0
 
Oct. 15, 2021, 7 p.m. N/A 1.3 ppb (2) N/A 8.0 ppb (8) N/A N/A 17.0 ppb (16) N/A N/A N/A 16.0
 
Oct. 15, 2021, 6 p.m. N/A 0.8 ppb (1) N/A 6.0 ppb (6) N/A N/A 18.0 ppb (17) N/A N/A N/A 17.0
 
Oct. 15, 2021, 5 p.m. N/A 0.6 ppb (1) N/A 5.0 ppb (5) N/A N/A 21.0 ppb (20) N/A N/A 0.0 μg/m3 (0) 20.0
 
Oct. 15, 2021, 4 p.m. N/A 0.8 ppb (1) N/A 6.0 ppb (6) N/A N/A 17.0 ppb (16) N/A N/A 1.0 μg/m3 (5) 16.0
 
Oct. 15, 2021, 3 p.m. N/A 1.0 ppb (1) N/A 5.0 ppb (5) N/A N/A 17.0 ppb (16) N/A N/A 1.0 μg/m3 (5) 16.0
 
Oct. 15, 2021, 2 p.m. N/A 0.5 ppb (1) N/A 4.0 ppb (4) N/A N/A 18.0 ppb (17) N/A N/A 0.0 μg/m3 (0) 17.0
 
Oct. 15, 2021, 1 p.m. N/A 0.5 ppb (1) N/A 4.0 ppb (4) N/A N/A 19.0 ppb (18) N/A N/A 0.0 μg/m3 (0) 18.0
 
Oct. 15, 2021, noon N/A 0.1 ppb (1) N/A 3.0 ppb (3) N/A N/A 20.0 ppb (19) N/A N/A 0.0 μg/m3 (0) 19.0
 
Oct. 15, 2021, 11 a.m. N/A 0.2 ppb (1) N/A 3.0 ppb (3) N/A N/A 24.0 ppb (23) N/A N/A 0.0 μg/m3 (0) 23.0
 
Oct. 15, 2021, 10 a.m. N/A 0.1 ppb (1) N/A 4.0 ppb (4) N/A N/A 21.0 ppb (20) N/A N/A 1.0 μg/m3 (5) 20.0
 
Oct. 15, 2021, 9 a.m. N/A 0.2 ppb (1) N/A 5.0 ppb (5) N/A N/A 16.0 ppb (15) N/A N/A 3.0 μg/m3 (13) 15.0
 
Oct. 15, 2021, 8 a.m. N/A 0.2 ppb (1) N/A 6.0 ppb (6) N/A N/A 16.0 ppb (15) N/A N/A 1.0 μg/m3 (5) 15.0
 
Oct. 15, 2021, 7 a.m. N/A 0.1 ppb (1) N/A 6.0 ppb (6) N/A N/A 16.0 ppb (15) N/A N/A 0.0 μg/m3 (0) 15.0
 
Oct. 15, 2021, 6 a.m. N/A 0.3 ppb (1) N/A 6.0 ppb (6) N/A N/A 16.0 ppb (15) N/A N/A 1.0 μg/m3 (5) 15.0
 
Oct. 15, 2021, 5 a.m. N/A 0.1 ppb (1) N/A 7.0 ppb (7) N/A N/A 16.0 ppb (15) N/A N/A 4.0 μg/m3 (17) 17.0
 
Oct. 15, 2021, 4 a.m. N/A 0.2 ppb (1) N/A 7.0 ppb (7) N/A N/A 15.0 ppb (14) N/A N/A 3.0 μg/m3 (13) 14.0
 
Oct. 15, 2021, 3 a.m. N/A 0.4 ppb (1) N/A 8.0 ppb (8) N/A N/A 14.0 ppb (13) N/A N/A 6.0 μg/m3 (25) 25.0
 
Oct. 15, 2021, 2 a.m. N/A 0.4 ppb (1) N/A 8.0 ppb (8) N/A N/A 14.0 ppb (13) N/A N/A 10.0 μg/m3 (42) 42.0
 
Oct. 15, 2021, 1 a.m. N/A 0.6 ppb (1) N/A 9.0 ppb (9) N/A N/A 15.0 ppb (14) N/A N/A 4.0 μg/m3 (17) 17.0
 
Oct. 15, 2021, midnight N/A 1.3 ppb (2) N/A 9.0 ppb (9) N/A N/A 15.0 ppb (14) N/A N/A 4.0 μg/m3 (17) 17.0
 
Oct. 14, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 1.0 μg/m3 (5) 5.0
 
Oct. 14, 2021, 10 p.m. N/A 1.0 ppb (1) N/A 6.0 ppb (6) N/A N/A 20.0 ppb (19) N/A N/A 2.0 μg/m3 (9) 19.0
 
Oct. 14, 2021, 9 p.m. N/A 2.8 ppb (3) N/A 7.0 ppb (7) N/A N/A 20.0 ppb (19) N/A N/A 1.0 μg/m3 (5) 19.0
 
Oct. 14, 2021, 8 p.m. N/A 1.1 ppb (2) N/A 5.0 ppb (5) N/A N/A 21.0 ppb (20) N/A N/A 1.0 μg/m3 (5) 20.0
 
Oct. 14, 2021, 7 p.m. N/A 1.1 ppb (2) N/A 5.0 ppb (5) N/A N/A 17.0 ppb (16) N/A N/A 3.0 μg/m3 (13) 16.0
 
Oct. 14, 2021, 6 p.m. N/A 1.3 ppb (2) N/A 5.0 ppb (5) N/A N/A 16.0 ppb (15) N/A N/A 2.0 μg/m3 (9) 15.0
 
Oct. 14, 2021, 5 p.m. N/A 1.6 ppb (2) N/A 5.0 ppb (5) N/A N/A 14.0 ppb (13) N/A N/A 2.0 μg/m3 (9) 13.0
 
Oct. 14, 2021, 4 p.m. N/A 1.8 ppb (2) N/A 7.0 ppb (7) N/A N/A 13.0 ppb (13) N/A N/A 3.0 μg/m3 (13) 13.0
 
Oct. 14, 2021, 3 p.m. N/A 0.9 ppb (1) N/A 7.0 ppb (7) N/A N/A 13.0 ppb (13) N/A N/A 3.0 μg/m3 (13) 13.0
 
Oct. 14, 2021, 2 p.m. N/A 0.7 ppb (1) N/A 6.0 ppb (6) N/A N/A 13.0 ppb (13) N/A N/A 3.0 μg/m3 (13) 13.0
 
Oct. 14, 2021, 1 p.m. N/A 0.2 ppb (1) N/A 4.0 ppb (4) N/A N/A 14.0 ppb (13) N/A N/A 6.0 μg/m3 (25) 25.0
 
Oct. 14, 2021, noon N/A 0.3 ppb (1) N/A 2.0 ppb (2) N/A N/A 14.0 ppb (13) N/A N/A 5.0 μg/m3 (21) 21.0
 
Oct. 14, 2021, 11 a.m. N/A 0.1 ppb (1) N/A 2.0 ppb (2) N/A N/A 11.0 ppb (11) N/A N/A 5.0 μg/m3 (21) 21.0
 
Oct. 14, 2021, 10 a.m. N/A 0.2 ppb (1) N/A 2.0 ppb (2) N/A N/A 13.0 ppb (13) N/A N/A 5.0 μg/m3 (21) 21.0
 
Oct. 14, 2021, 9 a.m. N/A 0.2 ppb (1) N/A 1.0 ppb (1) N/A N/A 18.0 ppb (17) N/A N/A 3.0 μg/m3 (13) 17.0
 
Oct. 14, 2021, 8 a.m. N/A 0.1 ppb (1) N/A 2.0 ppb (2) N/A N/A 19.0 ppb (18) N/A N/A 5.0 μg/m3 (21) 21.0
 
Oct. 14, 2021, 7 a.m. N/A 0.2 ppb (1) N/A 2.0 ppb (2) N/A N/A 19.0 ppb (18) N/A N/A 6.0 μg/m3 (25) 25.0
 
Oct. 14, 2021, 6 a.m. N/A 0.2 ppb (1) N/A 2.0 ppb (2) N/A N/A 19.0 ppb (18) N/A N/A 3.0 μg/m3 (13) 18.0
 
Oct. 14, 2021, 5 a.m. N/A 0.2 ppb (1) N/A 3.0 ppb (3) N/A N/A 19.0 ppb (18) N/A N/A 5.0 μg/m3 (21) 21.0
 
Oct. 14, 2021, 4 a.m. N/A -0.1 ppb (0) N/A 4.0 ppb (4) N/A N/A 16.0 ppb (15) N/A N/A 4.0 μg/m3 (17) 17.0
 
Oct. 14, 2021, 3 a.m. N/A 0.4 ppb (1) N/A 5.0 ppb (5) N/A N/A 16.0 ppb (15) N/A N/A 0.0 μg/m3 (0) 15.0
 
Oct. 14, 2021, 2 a.m. N/A 0.4 ppb (1) N/A 6.0 ppb (6) N/A N/A 20.0 ppb (19) N/A N/A 3.0 μg/m3 (13) 19.0
 
Oct. 14, 2021, 1 a.m. N/A 0.4 ppb (1) N/A 4.0 ppb (4) N/A N/A 19.0 ppb (18) N/A N/A 2.0 μg/m3 (9) 18.0
 
Oct. 13, 2021, 11 p.m. N/A 1.1 ppb (2) N/A 3.0 ppb (3) N/A N/A 20.0 ppb (19) N/A N/A N/A 19.0
 
Oct. 13, 2021, 10 p.m. N/A 1.1 ppb (2) N/A 2.0 ppb (2) N/A N/A 21.0 ppb (20) N/A N/A N/A 20.0
 
Oct. 13, 2021, 9 p.m. N/A 3.4 ppb (4) N/A 3.0 ppb (3) N/A N/A 21.0 ppb (20) N/A N/A N/A 20.0
 
Oct. 13, 2021, 8 p.m. N/A 1.2 ppb (2) N/A 3.0 ppb (3) N/A N/A 19.0 ppb (18) N/A N/A N/A 18.0
 
Oct. 13, 2021, 7 p.m. N/A 0.4 ppb (1) N/A 1.0 ppb (1) N/A N/A 18.0 ppb (17) N/A N/A N/A 17.0
 
Oct. 13, 2021, 6 p.m. N/A 0.7 ppb (1) N/A 1.0 ppb (1) N/A N/A 18.0 ppb (17) N/A N/A N/A 17.0
 
Oct. 13, 2021, 5 p.m. N/A 4.5 ppb (5) N/A 3.0 ppb (3) N/A N/A 14.0 ppb (13) N/A N/A 10.0 μg/m3 (42) 42.0
 
Oct. 13, 2021, 4 p.m. N/A 18.6 ppb (18) N/A 6.0 ppb (6) N/A N/A 5.0 ppb (5) N/A N/A 13.0 μg/m3 (53) 53.0
 
Oct. 13, 2021, 3 p.m. N/A 14.6 ppb (14) N/A 6.0 ppb (6) N/A N/A 3.0 ppb (3) N/A N/A 12.0 μg/m3 (50) 50.0
 
Oct. 13, 2021, 2 p.m. N/A 17.4 ppb (17) N/A 7.0 ppb (7) N/A N/A 2.0 ppb (2) N/A N/A 13.0 μg/m3 (53) 53.0
 
Oct. 13, 2021, 1 p.m. N/A 1.6 ppb (2) N/A 3.0 ppb (3) N/A N/A 5.0 ppb (5) N/A N/A 17.0 μg/m3 (62) 62.0
 
Oct. 13, 2021, noon N/A 0.9 ppb (1) N/A 3.0 ppb (3) N/A N/A 4.0 ppb (4) N/A N/A 19.0 μg/m3 (66) 66.0
 
Oct. 13, 2021, 11 a.m. N/A 1.2 ppb (2) N/A 4.0 ppb (4) N/A N/A 4.0 ppb (4) N/A N/A 14.0 μg/m3 (55) 55.0
 
Oct. 13, 2021, 10 a.m. N/A 0.3 ppb (1) N/A 2.0 ppb (2) N/A N/A 8.0 ppb (8) N/A N/A 11.0 μg/m3 (46) 46.0
 
Oct. 13, 2021, 9 a.m. N/A 0.0 ppb (0) N/A 2.0 ppb (2) N/A N/A 13.0 ppb (13) N/A N/A 9.0 μg/m3 (38) 38.0
 
Oct. 13, 2021, 8 a.m. N/A 0.2 ppb (1) N/A 2.0 ppb (2) N/A N/A 17.0 ppb (16) N/A N/A 9.0 μg/m3 (38) 38.0
 
Oct. 13, 2021, 7 a.m. N/A 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 20.0 ppb (19) N/A N/A 8.0 μg/m3 (34) 34.0
 
Oct. 13, 2021, 6 a.m. N/A -0.1 ppb (0) N/A 1.0 ppb (1) N/A N/A 23.0 ppb (22) N/A N/A 8.0 μg/m3 (34) 34.0
 
Oct. 13, 2021, 5 a.m. N/A 0.0 ppb (0) N/A 2.0 ppb (2) N/A N/A 23.0 ppb (22) N/A N/A 8.0 μg/m3 (34) 34.0
 
Oct. 13, 2021, 4 a.m. N/A 0.2 ppb (1) N/A 2.0 ppb (2) N/A N/A 20.0 ppb (19) N/A N/A 9.0 μg/m3 (38) 38.0
 
Oct. 13, 2021, 3 a.m. N/A 0.3 ppb (1) N/A 6.0 ppb (6) N/A N/A 16.0 ppb (15) N/A N/A 12.0 μg/m3 (50) 50.0
 
Oct. 13, 2021, 2 a.m. N/A 0.3 ppb (1) N/A 8.0 ppb (8) N/A N/A 15.0 ppb (14) N/A N/A 9.0 μg/m3 (38) 38.0
 
Oct. 13, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 7.0 μg/m3 (30) 30.0
 
Oct. 13, 2021, midnight N/A 0.4 ppb (1) N/A 3.0 ppb (3) N/A N/A 25.0 ppb (24) N/A N/A 5.0 μg/m3 (21) 24.0
 
Oct. 12, 2021, 11 p.m. N/A 0.7 ppb (1) N/A 4.0 ppb (4) N/A N/A 23.0 ppb (22) N/A N/A 6.0 μg/m3 (25) 25.0
 
Oct. 12, 2021, 10 p.m. N/A 1.3 ppb (2) N/A 4.0 ppb (4) N/A N/A 20.0 ppb (19) N/A N/A 7.0 μg/m3 (30) 30.0
 
Oct. 12, 2021, 9 p.m. N/A 1.7 ppb (2) N/A 5.0 ppb (5) N/A N/A 18.0 ppb (17) N/A N/A 10.0 μg/m3 (42) 42.0
 
Oct. 12, 2021, 8 p.m. N/A 1.8 ppb (2) N/A 5.0 ppb (5) N/A N/A 17.0 ppb (16) N/A N/A N/A 16.0
 
Oct. 12, 2021, 7 p.m. N/A 2.0 ppb (2) N/A 4.0 ppb (4) N/A N/A 18.0 ppb (17) N/A N/A N/A 17.0
 
Oct. 12, 2021, 6 p.m. N/A 1.4 ppb (2) N/A 3.0 ppb (3) N/A N/A 20.0 ppb (19) N/A N/A 13.0 μg/m3 (53) 53.0
 
Oct. 12, 2021, 5 p.m. N/A 0.9 ppb (1) N/A 3.0 ppb (3) N/A N/A 21.0 ppb (20) N/A N/A 10.0 μg/m3 (42) 42.0
 
Oct. 12, 2021, 4 p.m. N/A 0.9 ppb (1) N/A 3.0 ppb (3) N/A N/A 20.0 ppb (19) N/A N/A 9.0 μg/m3 (38) 38.0
 
Oct. 12, 2021, 3 p.m. N/A 0.6 ppb (1) N/A 4.0 ppb (4) N/A N/A 17.0 ppb (16) N/A N/A 6.0 μg/m3 (25) 25.0
 
Oct. 12, 2021, 2 p.m. N/A 4.2 ppb (4) N/A 8.0 ppb (8) N/A N/A 11.0 ppb (11) N/A N/A 6.0 μg/m3 (25) 25.0
 
Oct. 12, 2021, 1 p.m. N/A 0.6 ppb (1) N/A 4.0 ppb (4) N/A N/A 14.0 ppb (13) N/A N/A 9.0 μg/m3 (38) 38.0
 
Oct. 12, 2021, noon N/A 2.5 ppb (3) N/A 5.0 ppb (5) N/A N/A 6.0 ppb (6) N/A N/A 8.0 μg/m3 (34) 34.0
 
Oct. 12, 2021, 11 a.m. N/A 3.2 ppb (4) N/A 4.0 ppb (4) N/A N/A 5.0 ppb (5) N/A N/A 6.0 μg/m3 (25) 25.0
 
Oct. 12, 2021, 10 a.m. N/A 2.1 ppb (2) N/A 3.0 ppb (3) N/A N/A 3.0 ppb (3) N/A N/A 7.0 μg/m3 (30) 30.0
 
Oct. 12, 2021, 9 a.m. N/A 2.7 ppb (3) N/A 2.0 ppb (2) N/A N/A 2.0 ppb (2) N/A N/A 16.0 μg/m3 (60) 60.0
 
Oct. 12, 2021, 8 a.m. N/A 2.0 ppb (2) N/A 2.0 ppb (2) N/A N/A 2.0 ppb (2) N/A N/A 16.0 μg/m3 (60) 60.0
 
Oct. 12, 2021, 7 a.m. N/A 2.2 ppb (3) N/A 2.0 ppb (2) N/A N/A 2.0 ppb (2) N/A N/A 23.0 μg/m3 (74) 74.0
 
Oct. 12, 2021, 6 a.m. N/A 3.2 ppb (4) N/A 3.0 ppb (3) N/A N/A 2.0 ppb (2) N/A N/A 16.0 μg/m3 (60) 60.0