ID: 2057

AQSQID: 000100140

Site Name: Tsawwassen

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

Updated: May 25, 2022, 9:48 p.m.

Location: Delta (Milsom Wynd), CC

Reporting: True, Located: True

Current AQI: 25.0

Delta (Milsom Wynd) CC, CA: 49.009869, -123.082017

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
May 25, 2022, 8 p.m. N/A 2.2 ppb (3) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 27.0 ppb (25) 0.11 ppb (2) N/A 2.5 μg/m3 (11) 25.0
 
May 25, 2022, 7 p.m. N/A 2.4 ppb (3) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 27.0 ppb (25) 0.11 ppb (2) N/A 2.3 μg/m3 (10) 25.0
 
May 25, 2022, 7 p.m. N/A 2.4 ppb (3) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 27.0 ppb (25) 0.11 ppb (2) N/A 2.3 μg/m3 (10) 25.0
 
May 25, 2022, 6 p.m. N/A 6.2 ppb (6) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 23.0 ppb (22) 0.12 ppb (2) N/A 1.7 μg/m3 (8) 22.0
 
May 25, 2022, 6 p.m. N/A 6.2 ppb (6) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 23.0 ppb (22) 0.12 ppb (2) N/A 1.7 μg/m3 (8) 22.0
 
May 25, 2022, 5 p.m. N/A 6.4 ppb (7) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 23.0 ppb (22) 0.12 ppb (2) N/A 1.7 μg/m3 (8) 22.0
 
May 25, 2022, 5 p.m. N/A 6.4 ppb (7) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 23.0 ppb (22) 0.12 ppb (2) N/A 1.7 μg/m3 (8) 22.0
 
May 25, 2022, 4 p.m. N/A 4.0 ppb (4) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 20.0 ppb (19) 0.21 ppb (3) N/A 5.2 μg/m3 (22) 22.0
 
May 25, 2022, 3 p.m. N/A 2.3 ppb (3) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 30.0 ppb (28) 0.12 ppb (2) N/A 5.2 μg/m3 (22) 28.0
 
May 25, 2022, 3 p.m. N/A 2.3 ppb (3) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 30.0 ppb (28) 0.12 ppb (2) N/A 5.2 μg/m3 (22) 28.0
 
May 25, 2022, 2 p.m. N/A 2.3 ppb (3) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 30.0 ppb (28) 0.12 ppb (2) N/A 3.1 μg/m3 (13) 28.0
 
May 25, 2022, 1 p.m. N/A 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 2.6 μg/m3 (11) 31.0
 
May 25, 2022, 9 a.m. N/A 0.1 ppb (1) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 22.0 ppb (21) 0.12 ppb (2) N/A 2.5 μg/m3 (11) 21.0
 
May 25, 2022, 5 a.m. N/A 0.1 ppb (1) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 25.0 ppb (24) 0.12 ppb (2) N/A 4.4 μg/m3 (19) 24.0
 
May 25, 2022, 4 a.m. N/A 0.3 ppb (1) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 24.0 ppb (23) 0.12 ppb (2) N/A 4.1 μg/m3 (18) 23.0
 
May 25, 2022, 1 a.m. N/A 0.3 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 29.0 ppb (27) 0.11 ppb (2) N/A 3.1 μg/m3 (13) 27.0
 
May 25, 2022, midnight N/A 0.4 ppb (1) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 31.0 ppb (29) 0.11 ppb (2) N/A 3.1 μg/m3 (13) 29.0
 
May 24, 2022, 9 p.m. N/A 1.1 ppb (2) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 32.0 ppb (30) 0.13 ppb (2) N/A 1.7 μg/m3 (8) 30.0
 
May 24, 2022, 8 p.m. N/A 2.5 ppb (3) N/A 3.0 ppb (3) N/A 1.0 ppb (2) 29.0 ppb (27) 0.11 ppb (2) N/A 2.1 μg/m3 (9) 27.0
 
May 24, 2022, 7 p.m. N/A 1.9 ppb (2) N/A 2.0 ppb (2) N/A 1.0 ppb (2) 30.0 ppb (28) 0.12 ppb (2) N/A 1.8 μg/m3 (8) 28.0
 
May 24, 2022, 6 p.m. N/A 3.6 ppb (4) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 30.0 ppb (28) 0.11 ppb (2) N/A 2.1 μg/m3 (9) 28.0
 
May 24, 2022, 5 p.m. N/A 1.2 ppb (2) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 31.0 ppb (29) 0.1 ppb (2) N/A 1.7 μg/m3 (8) 29.0
 
May 24, 2022, 4 p.m. N/A 3.3 ppb (4) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 29.0 ppb (27) 0.1 ppb (2) N/A 2.0 μg/m3 (9) 27.0
 
May 24, 2022, 3 p.m. N/A 3.7 ppb (4) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 27.0 ppb (25) 0.11 ppb (2) N/A 3.9 μg/m3 (17) 25.0
 
May 24, 2022, 2 p.m. N/A 0.7 ppb (1) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 29.0 ppb (27) 0.1 ppb (2) N/A 3.1 μg/m3 (13) 27.0
 
May 24, 2022, 1 p.m. N/A 0.2 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 28.0 ppb (26) 0.09 ppb (2) N/A 2.5 μg/m3 (11) 26.0
 
May 24, 2022, noon N/A 0.1 ppb (1) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 30.0 ppb (28) 0.1 ppb (2) N/A 2.5 μg/m3 (11) 28.0
 
May 24, 2022, 10 a.m. N/A 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 28.0 ppb (26) 0.1 ppb (2) N/A 1.5 μg/m3 (7) 26.0
 
May 24, 2022, 9 a.m. N/A 0.1 ppb (1) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 25.0 ppb (24) 0.12 ppb (2) N/A 1.3 μg/m3 (6) 24.0
 
May 24, 2022, 8 a.m. N/A 0.0 ppb (0) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 27.0 ppb (25) 0.11 ppb (2) N/A 1.4 μg/m3 (6) 25.0
 
May 24, 2022, 6 a.m. N/A 0.4 ppb (1) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 29.0 ppb (27) 0.11 ppb (2) N/A 2.3 μg/m3 (10) 27.0
 
May 24, 2022, 5 a.m. N/A 0.1 ppb (1) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 29.0 ppb (27) 0.11 ppb (2) N/A 2.1 μg/m3 (9) 27.0
 
May 24, 2022, 5 a.m. N/A 0.1 ppb (1) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 29.0 ppb (27) 0.11 ppb (2) N/A 2.1 μg/m3 (9) 27.0
 
May 24, 2022, 4 a.m. N/A 0.1 ppb (1) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 35.0 ppb (33) 0.1 ppb (2) N/A 1.9 μg/m3 (8) 33.0
 
May 24, 2022, 4 a.m. N/A 0.1 ppb (1) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 35.0 ppb (33) 0.1 ppb (2) N/A 1.9 μg/m3 (8) 33.0
 
May 24, 2022, 3 a.m. N/A 0.3 ppb (1) N/A 7.0 ppb (7) N/A 1.0 ppb (2) 38.0 ppb (36) 0.11 ppb (2) N/A 2.3 μg/m3 (10) 36.0
 
May 24, 2022, 3 a.m. N/A 0.3 ppb (1) N/A 7.0 ppb (7) N/A 1.0 ppb (2) 38.0 ppb (36) 0.11 ppb (2) N/A 2.3 μg/m3 (10) 36.0
 
May 24, 2022, 2 a.m. N/A 0.4 ppb (1) N/A 4.0 ppb (4) N/A 1.0 ppb (2) 44.0 ppb (41) 0.11 ppb (2) N/A 2.6 μg/m3 (11) 41.0
 
May 24, 2022, 2 a.m. N/A 0.4 ppb (1) N/A 4.0 ppb (4) N/A 1.0 ppb (2) 44.0 ppb (41) 0.11 ppb (2) N/A 2.6 μg/m3 (11) 41.0
 
May 24, 2022, 1 a.m. N/A 0.8 ppb (1) N/A 4.0 ppb (4) N/A 1.0 ppb (2) 44.0 ppb (41) 0.12 ppb (2) N/A 2.0 μg/m3 (9) 41.0
 
May 24, 2022, 1 a.m. N/A 0.8 ppb (1) N/A 4.0 ppb (4) N/A 1.0 ppb (2) 44.0 ppb (41) 0.12 ppb (2) N/A 2.0 μg/m3 (9) 41.0
 
May 24, 2022, midnight N/A 0.1 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 44.0 ppb (41) 0.12 ppb (2) N/A 2.1 μg/m3 (9) 41.0
 
May 24, 2022, midnight N/A 0.1 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 44.0 ppb (41) 0.12 ppb (2) N/A 2.1 μg/m3 (9) 41.0
 
May 23, 2022, 11 p.m. N/A 0.2 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 43.0 ppb (40) 0.12 ppb (2) N/A 1.4 μg/m3 (6) 40.0
 
May 23, 2022, 11 p.m. N/A 0.2 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 43.0 ppb (40) 0.12 ppb (2) N/A 1.4 μg/m3 (6) 40.0
 
May 23, 2022, 8 p.m. N/A 0.3 ppb (1) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 37.0 ppb (35) 0.11 ppb (2) N/A 3.2 μg/m3 (14) 35.0
 
May 23, 2022, 7 p.m. N/A 0.4 ppb (1) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 35.0 ppb (33) 0.11 ppb (2) N/A 2.6 μg/m3 (11) 33.0
 
May 23, 2022, 6 p.m. N/A 0.6 ppb (1) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 32.0 ppb (30) 0.11 ppb (2) N/A 2.8 μg/m3 (12) 30.0
 
May 23, 2022, 3 p.m. N/A 0.3 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 30.0 ppb (28) 0.1 ppb (2) N/A 7.5 μg/m3 (32) 32.0
 
May 23, 2022, 2 p.m. N/A 0.3 ppb (1) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 29.0 ppb (27) 0.11 ppb (2) N/A 7.2 μg/m3 (31) 31.0
 
May 23, 2022, 11 a.m. N/A 0.1 ppb (1) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 27.0 ppb (25) 0.11 ppb (2) N/A 6.5 μg/m3 (28) 28.0
 
May 23, 2022, 10 a.m. N/A 0.2 ppb (1) N/A 12.0 ppb (12) N/A 0.0 ppb (0) 20.0 ppb (19) 0.13 ppb (2) N/A 5.3 μg/m3 (23) 23.0
 
May 23, 2022, 10 a.m. N/A 0.2 ppb (1) N/A 12.0 ppb (12) N/A 0.0 ppb (0) 20.0 ppb (19) 0.13 ppb (2) N/A 5.3 μg/m3 (23) 23.0
 
May 23, 2022, 9 a.m. N/A 0.2 ppb (1) N/A 12.0 ppb (12) N/A 1.0 ppb (2) 25.0 ppb (24) 0.14 ppb (2) N/A 5.1 μg/m3 (22) 24.0
 
May 23, 2022, 3 a.m. N/A 0.1 ppb (1) N/A 6.0 ppb (6) N/A 1.0 ppb (2) 39.0 ppb (37) 0.14 ppb (2) N/A 3.9 μg/m3 (17) 37.0
 
May 23, 2022, 2 a.m. N/A 0.3 ppb (1) N/A 5.0 ppb (5) N/A 1.0 ppb (2) 42.0 ppb (39) 0.13 ppb (2) N/A 3.2 μg/m3 (14) 39.0
 
May 23, 2022, 1 a.m. N/A 0.1 ppb (1) N/A 2.0 ppb (2) N/A 1.0 ppb (2) 47.0 ppb (44) 0.14 ppb (2) N/A 3.9 μg/m3 (17) 44.0
 
May 23, 2022, midnight N/A 0.2 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 47.0 ppb (44) 0.14 ppb (2) N/A 4.2 μg/m3 (18) 44.0
 
May 22, 2022, 11 p.m. N/A 0.3 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 48.0 ppb (45) 0.14 ppb (2) N/A 4.0 μg/m3 (17) 45.0
 
May 22, 2022, 9 p.m. N/A 0.5 ppb (1) N/A 2.0 ppb (2) N/A 1.0 ppb (2) 43.0 ppb (40) 0.12 ppb (2) N/A 3.3 μg/m3 (14) 40.0
 
May 22, 2022, 8 p.m. N/A 0.8 ppb (1) N/A 2.0 ppb (2) N/A 1.0 ppb (2) 39.0 ppb (37) 0.12 ppb (2) N/A 4.1 μg/m3 (18) 37.0
 
May 22, 2022, 7 p.m. N/A 1.6 ppb (2) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 32.0 ppb (30) 0.12 ppb (2) N/A 4.8 μg/m3 (20) 30.0
 
May 22, 2022, 6 p.m. N/A 2.6 ppb (3) N/A 4.0 ppb (4) N/A 1.0 ppb (2) 29.0 ppb (27) 0.11 ppb (2) N/A 5.0 μg/m3 (21) 27.0
 
May 22, 2022, 5 p.m. N/A 1.3 ppb (2) N/A 2.0 ppb (2) N/A 1.0 ppb (2) 29.0 ppb (27) 0.11 ppb (2) N/A 3.8 μg/m3 (16) 27.0
 
May 22, 2022, 4 p.m. N/A 1.4 ppb (2) N/A 2.0 ppb (2) N/A 1.0 ppb (2) 23.0 ppb (22) 0.12 ppb (2) N/A 2.1 μg/m3 (9) 22.0
 
May 22, 2022, 3 p.m. N/A 1.2 ppb (2) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 19.0 ppb (18) 0.11 ppb (2) N/A 1.7 μg/m3 (8) 18.0
 
May 22, 2022, 2 p.m. N/A 0.8 ppb (1) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 19.0 ppb (18) 0.12 ppb (2) N/A 1.5 μg/m3 (7) 18.0
 
May 22, 2022, 1 p.m. N/A 0.9 ppb (1) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 17.0 ppb (16) 0.13 ppb (2) N/A 2.0 μg/m3 (9) 16.0
 
May 22, 2022, 1 p.m. N/A 0.9 ppb (1) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 17.0 ppb (16) 0.13 ppb (2) N/A 2.0 μg/m3 (9) 16.0
 
May 22, 2022, noon N/A 0.2 ppb (1) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 18.0 ppb (17) 0.14 ppb (2) N/A 2.6 μg/m3 (11) 17.0
 
May 22, 2022, 11 a.m. N/A 0.1 ppb (1) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 22.0 ppb (21) 0.14 ppb (2) N/A 3.6 μg/m3 (16) 21.0
 
May 22, 2022, 10 a.m. N/A 0.2 ppb (1) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 24.0 ppb (23) 0.14 ppb (2) N/A 6.0 μg/m3 (25) 25.0
 
May 22, 2022, 9 a.m. N/A 0.2 ppb (1) N/A 7.0 ppb (7) N/A 0.0 ppb (0) 25.0 ppb (24) 0.15 ppb (2) N/A 7.8 μg/m3 (33) 33.0
 
May 22, 2022, 8 a.m. N/A 0.3 ppb (1) N/A 9.0 ppb (9) N/A 0.0 ppb (0) 26.0 ppb (25) 0.16 ppb (3) N/A 7.9 μg/m3 (33) 33.0
 
May 22, 2022, 7 a.m. N/A 0.3 ppb (1) N/A 10.0 ppb (10) N/A 0.0 ppb (0) 25.0 ppb (24) 0.15 ppb (2) N/A 4.5 μg/m3 (19) 24.0
 
May 22, 2022, 5 a.m. N/A 0.1 ppb (1) N/A 6.0 ppb (6) N/A 1.0 ppb (2) 36.0 ppb (34) 0.13 ppb (2) N/A 4.8 μg/m3 (20) 34.0
 
May 22, 2022, 3 a.m. N/A 0.3 ppb (1) N/A 8.0 ppb (8) N/A 1.0 ppb (2) 36.0 ppb (34) 0.12 ppb (2) N/A 3.7 μg/m3 (16) 34.0
 
May 22, 2022, 2 a.m. N/A 1.6 ppb (2) N/A 13.0 ppb (13) N/A 1.0 ppb (2) 33.0 ppb (31) 0.13 ppb (2) N/A 4.1 μg/m3 (18) 31.0
 
May 22, 2022, 1 a.m. N/A 2.0 ppb (2) N/A 8.0 ppb (8) N/A 1.0 ppb (2) 37.0 ppb (35) 0.14 ppb (2) N/A 3.7 μg/m3 (16) 35.0
 
May 22, 2022, midnight N/A 1.8 ppb (2) N/A 6.0 ppb (6) N/A 1.0 ppb (2) 40.0 ppb (38) 0.13 ppb (2) N/A 3.1 μg/m3 (13) 38.0
 
May 21, 2022, 11 p.m. N/A 0.8 ppb (1) N/A 2.0 ppb (2) N/A 1.0 ppb (2) 42.0 ppb (39) 0.14 ppb (2) N/A 2.1 μg/m3 (9) 39.0
 
May 21, 2022, 10 p.m. N/A 1.3 ppb (2) N/A 2.0 ppb (2) N/A 1.0 ppb (2) 40.0 ppb (38) 0.14 ppb (2) N/A 3.3 μg/m3 (14) 38.0
 
May 21, 2022, 9 p.m. N/A 3.1 ppb (3) N/A 5.0 ppb (5) N/A 1.0 ppb (2) 36.0 ppb (34) 0.14 ppb (2) N/A 3.7 μg/m3 (16) 34.0
 
May 21, 2022, 8 p.m. N/A 5.1 ppb (5) N/A 8.0 ppb (8) N/A 1.0 ppb (2) 28.0 ppb (26) 0.14 ppb (2) N/A 4.7 μg/m3 (20) 26.0
 
May 21, 2022, 7 p.m. N/A 5.7 ppb (6) N/A 7.0 ppb (7) N/A 1.0 ppb (2) 27.0 ppb (25) 0.12 ppb (2) N/A 3.0 μg/m3 (13) 25.0
 
May 21, 2022, 6 p.m. N/A 1.4 ppb (2) N/A 2.0 ppb (2) N/A 1.0 ppb (2) 28.0 ppb (26) 0.12 ppb (2) N/A 3.1 μg/m3 (13) 26.0
 
May 21, 2022, 5 p.m. N/A 1.5 ppb (2) N/A 2.0 ppb (2) N/A 1.0 ppb (2) 26.0 ppb (25) 0.12 ppb (2) N/A 2.8 μg/m3 (12) 25.0
 
May 21, 2022, 4 p.m. N/A 0.7 ppb (1) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 24.0 ppb (23) 0.11 ppb (2) N/A 1.5 μg/m3 (7) 23.0
 
May 21, 2022, 3 p.m. N/A 0.6 ppb (1) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 23.0 ppb (22) 0.12 ppb (2) N/A 1.9 μg/m3 (8) 22.0
 
May 21, 2022, 2 p.m. N/A 0.8 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 19.0 ppb (18) 0.13 ppb (2) N/A 2.4 μg/m3 (10) 18.0
 
May 21, 2022, 1 p.m. N/A 0.8 ppb (1) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 14.0 ppb (13) 0.13 ppb (2) N/A 2.6 μg/m3 (11) 13.0
 
May 21, 2022, 1 p.m. N/A 0.8 ppb (1) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 14.0 ppb (13) 0.13 ppb (2) N/A 2.6 μg/m3 (11) 13.0
 
May 21, 2022, noon N/A 1.2 ppb (2) N/A 7.0 ppb (7) N/A 0.0 ppb (0) 15.0 ppb (14) 0.14 ppb (2) N/A 3.2 μg/m3 (14) 14.0
 
May 21, 2022, 10 a.m. N/A 0.1 ppb (1) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 15.0 ppb (14) 0.15 ppb (2) N/A 3.2 μg/m3 (14) 14.0
 
May 21, 2022, 9 a.m. N/A 0.1 ppb (1) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 20.0 ppb (19) 0.14 ppb (2) N/A 6.7 μg/m3 (28) 28.0
 
May 21, 2022, 8 a.m. N/A 0.2 ppb (1) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 20.0 ppb (19) 0.13 ppb (2) N/A 2.7 μg/m3 (12) 19.0
 
May 21, 2022, 4 a.m. N/A 0.1 ppb (1) N/A 3.0 ppb (3) N/A 1.0 ppb (2) 36.0 ppb (34) 0.11 ppb (2) N/A 5.4 μg/m3 (23) 34.0
 
May 21, 2022, 3 a.m. N/A 0.2 ppb (1) N/A 3.0 ppb (3) N/A 1.0 ppb (2) 37.0 ppb (35) 0.12 ppb (2) N/A 4.9 μg/m3 (21) 35.0
 
May 21, 2022, 2 a.m. N/A 1.0 ppb (1) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 34.0 ppb (32) 0.12 ppb (2) N/A 3.6 μg/m3 (16) 32.0
 
May 21, 2022, 1 a.m. N/A 0.7 ppb (1) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 33.0 ppb (31) 0.12 ppb (2) N/A 2.1 μg/m3 (9) 31.0
 
May 21, 2022, midnight N/A 0.7 ppb (1) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 31.0 ppb (29) 0.13 ppb (2) N/A 1.2 μg/m3 (5) 29.0
 
May 20, 2022, 11 p.m. N/A 3.3 ppb (4) N/A 6.0 ppb (6) N/A 1.0 ppb (2) 30.0 ppb (28) 0.14 ppb (2) N/A 2.5 μg/m3 (11) 28.0
 
May 20, 2022, 10 p.m. N/A 5.9 ppb (6) N/A 8.0 ppb (8) N/A 0.0 ppb (0) 28.0 ppb (26) 0.14 ppb (2) N/A 3.2 μg/m3 (14) 26.0
 
May 20, 2022, 9 p.m. N/A 3.6 ppb (4) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 31.0 ppb (29) 0.14 ppb (2) N/A 4.4 μg/m3 (19) 29.0
 
May 20, 2022, 7 p.m. N/A 3.2 ppb (4) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 26.0 ppb (25) 0.12 ppb (2) N/A 4.8 μg/m3 (20) 25.0
 
May 20, 2022, 6 p.m. N/A 1.6 ppb (2) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 27.0 ppb (25) 0.12 ppb (2) N/A 3.8 μg/m3 (16) 25.0
 
May 20, 2022, 5 p.m. N/A 3.5 ppb (4) N/A 5.0 ppb (5) N/A 1.0 ppb (2) 23.0 ppb (22) 0.12 ppb (2) N/A 5.7 μg/m3 (24) 24.0
 
May 20, 2022, 4 p.m. N/A 4.9 ppb (5) N/A 7.0 ppb (7) N/A 1.0 ppb (2) 19.0 ppb (18) 0.14 ppb (2) N/A 6.7 μg/m3 (28) 28.0
 
May 20, 2022, 3 p.m. N/A 4.2 ppb (4) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 19.0 ppb (18) 0.16 ppb (3) N/A 4.4 μg/m3 (19) 19.0
 
May 20, 2022, 3 p.m. N/A 4.2 ppb (4) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 19.0 ppb (18) 0.16 ppb (3) N/A 4.4 μg/m3 (19) 19.0
 
May 20, 2022, 2 p.m. N/A 6.0 ppb (6) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 19.0 ppb (18) 0.12 ppb (2) N/A 3.0 μg/m3 (13) 18.0
 
May 20, 2022, 1 p.m. N/A 1.4 ppb (2) N/A 7.0 ppb (7) N/A 0.0 ppb (0) 17.0 ppb (16) 0.12 ppb (2) N/A 1.8 μg/m3 (8) 16.0
 
May 20, 2022, 11 a.m. N/A 0.2 ppb (1) N/A 9.0 ppb (9) N/A 0.0 ppb (0) 11.0 ppb (11) 0.15 ppb (2) N/A 1.6 μg/m3 (7) 11.0
 
May 20, 2022, 10 a.m. N/A 0.2 ppb (1) N/A 10.0 ppb (10) N/A 0.0 ppb (0) 14.0 ppb (13) 0.13 ppb (2) N/A 1.9 μg/m3 (8) 13.0
 
May 20, 2022, 9 a.m. N/A 0.2 ppb (1) N/A 13.0 ppb (13) N/A 0.0 ppb (0) 16.0 ppb (15) 0.13 ppb (2) N/A 2.7 μg/m3 (12) 15.0
 
May 20, 2022, 8 a.m. N/A 0.1 ppb (1) N/A 7.0 ppb (7) N/A 0.0 ppb (0) 25.0 ppb (24) 0.12 ppb (2) N/A 2.4 μg/m3 (10) 24.0
 
May 20, 2022, 7 a.m. N/A 0.1 ppb (1) N/A 11.0 ppb (11) N/A 0.0 ppb (0) 23.0 ppb (22) 0.12 ppb (2) N/A 1.9 μg/m3 (8) 22.0
 
May 20, 2022, 6 a.m. N/A 0.0 ppb (0) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 29.0 ppb (27) 0.12 ppb (2) N/A 1.3 μg/m3 (6) 27.0
 
May 20, 2022, 5 a.m. N/A 0.1 ppb (1) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 30.0 ppb (28) 0.11 ppb (2) N/A 1.2 μg/m3 (5) 28.0
 
May 20, 2022, 4 a.m. N/A 0.0 ppb (0) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 29.0 ppb (27) 0.11 ppb (2) N/A 1.0 μg/m3 (5) 27.0
 
May 20, 2022, 3 a.m. N/A 0.2 ppb (1) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 31.0 ppb (29) 0.11 ppb (2) N/A 1.4 μg/m3 (6) 29.0
 
May 20, 2022, 2 a.m. N/A 0.4 ppb (1) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 35.0 ppb (33) 0.12 ppb (2) N/A 0.4 μg/m3 (2) 33.0
 
May 20, 2022, 1 a.m. N/A 0.5 ppb (1) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 35.0 ppb (33) 0.12 ppb (2) N/A 0.3 μg/m3 (2) 33.0
 
May 20, 2022, 1 a.m. N/A 0.5 ppb (1) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 35.0 ppb (33) 0.12 ppb (2) N/A 0.3 μg/m3 (2) 33.0
 
May 20, 2022, midnight N/A 0.4 ppb (1) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 37.0 ppb (35) 0.12 ppb (2) N/A 0.0 μg/m3 (0) 35.0
 
May 20, 2022, midnight N/A 0.4 ppb (1) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 37.0 ppb (35) 0.12 ppb (2) N/A 0.0 μg/m3 (0) 35.0
 
May 19, 2022, 11 p.m. N/A 0.6 ppb (1) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 37.0 ppb (35) 0.12 ppb (2) N/A 0.2 μg/m3 (1) 35.0
 
May 19, 2022, 10 p.m. N/A 0.9 ppb (1) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 35.0 ppb (33) 0.13 ppb (2) N/A 0.6 μg/m3 (3) 33.0
 
May 19, 2022, 9 p.m. N/A 0.9 ppb (1) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 35.0 ppb (33) 0.14 ppb (2) N/A 0.6 μg/m3 (3) 33.0
 
May 19, 2022, 8 p.m. N/A 0.6 ppb (1) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 35.0 ppb (33) 0.12 ppb (2) N/A 0.4 μg/m3 (2) 33.0
 
May 19, 2022, 7 p.m. N/A 0.6 ppb (1) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 34.0 ppb (32) 0.12 ppb (2) N/A 0.6 μg/m3 (3) 32.0
 
May 19, 2022, 7 p.m. N/A 0.6 ppb (1) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 34.0 ppb (32) 0.12 ppb (2) N/A 0.6 μg/m3 (3) 32.0
 
May 19, 2022, 4 p.m. N/A 1.7 ppb (2) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 31.0 ppb (29) 0.11 ppb (2) N/A 2.5 μg/m3 (11) 29.0
 
May 19, 2022, 2 p.m. N/A 0.7 ppb (1) N/A 4.0 ppb (4) N/A 1.0 ppb (2) 30.0 ppb (28) 0.12 ppb (2) N/A 2.5 μg/m3 (11) 28.0
 
May 19, 2022, 6 a.m. N/A 0.0 ppb (0) N/A 2.0 ppb (2) N/A 1.0 ppb (2) 37.0 ppb (35) 0.12 ppb (2) N/A 2.9 μg/m3 (13) 35.0
 
May 19, 2022, 5 a.m. N/A 0.0 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 40.0 ppb (38) 0.12 ppb (2) N/A 2.7 μg/m3 (12) 38.0
 
May 19, 2022, 4 a.m. N/A 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 41.0 ppb (38) 0.12 ppb (2) N/A 2.0 μg/m3 (9) 38.0
 
May 19, 2022, 3 a.m. N/A 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 42.0 ppb (39) 0.12 ppb (2) N/A 2.9 μg/m3 (13) 39.0
 
May 19, 2022, 2 a.m. N/A 0.1 ppb (1) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 43.0 ppb (40) 0.11 ppb (2) N/A 1.6 μg/m3 (7) 40.0
 
May 19, 2022, 1 a.m. N/A 0.4 ppb (1) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 42.0 ppb (39) 0.1 ppb (2) N/A 2.8 μg/m3 (12) 39.0
 
May 18, 2022, 11 p.m. N/A 0.2 ppb (1) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 44.0 ppb (41) 0.11 ppb (2) N/A 1.4 μg/m3 (6) 41.0
 
May 18, 2022, 10 p.m. N/A 0.2 ppb (1) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 44.0 ppb (41) 0.11 ppb (2) N/A 1.0 μg/m3 (5) 41.0
 
May 18, 2022, 9 p.m. N/A 0.2 ppb (1) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 44.0 ppb (41) 0.12 ppb (2) N/A 0.9 μg/m3 (4) 41.0
 
May 18, 2022, 8 p.m. N/A 0.6 ppb (1) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 43.0 ppb (40) 0.12 ppb (2) N/A 2.0 μg/m3 (9) 40.0
 
May 18, 2022, 7 p.m. N/A 0.3 ppb (1) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 44.0 ppb (41) 0.12 ppb (2) N/A 0.9 μg/m3 (4) 41.0
 
May 18, 2022, 5 p.m. N/A 0.4 ppb (1) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 45.0 ppb (42) 0.12 ppb (2) N/A 1.7 μg/m3 (8) 42.0
 
May 18, 2022, 4 p.m. N/A 0.5 ppb (1) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 39.0 ppb (37) 0.11 ppb (2) N/A 3.2 μg/m3 (14) 37.0
 
May 18, 2022, 4 p.m. N/A 0.5 ppb (1) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 39.0 ppb (37) 0.11 ppb (2) N/A 3.2 μg/m3 (14) 37.0
 
May 18, 2022, 3 p.m. N/A 1.2 ppb (2) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 39.0 ppb (37) 0.11 ppb (2) N/A 2.7 μg/m3 (12) 37.0
 
May 18, 2022, 3 p.m. N/A 1.2 ppb (2) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 39.0 ppb (37) 0.11 ppb (2) N/A 2.7 μg/m3 (12) 37.0
 
May 18, 2022, 2 p.m. N/A 1.7 ppb (2) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 41.0 ppb (38) 0.11 ppb (2) N/A 3.1 μg/m3 (13) 38.0
 
May 18, 2022, 2 p.m. N/A 1.7 ppb (2) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 41.0 ppb (38) 0.11 ppb (2) N/A 3.1 μg/m3 (13) 38.0
 
May 18, 2022, 1 p.m. N/A 0.1 ppb (1) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 42.0 ppb (39) 0.11 ppb (2) N/A 2.4 μg/m3 (10) 39.0
 
May 18, 2022, 1 p.m. N/A 0.1 ppb (1) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 42.0 ppb (39) 0.11 ppb (2) N/A 2.4 μg/m3 (10) 39.0
 
May 18, 2022, noon N/A 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 36.0 ppb (34) 0.12 ppb (2) N/A 2.4 μg/m3 (10) 34.0
 
May 18, 2022, noon N/A 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 36.0 ppb (34) 0.12 ppb (2) N/A 2.4 μg/m3 (10) 34.0
 
May 18, 2022, 11 a.m. N/A 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 33.0 ppb (31) 0.12 ppb (2) N/A 1.8 μg/m3 (8) 31.0
 
May 18, 2022, 10 a.m. N/A 0.0 ppb (0) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 29.0 ppb (27) 0.13 ppb (2) N/A 2.8 μg/m3 (12) 27.0
 
May 18, 2022, 2 a.m. N/A 0.0 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 45.0 ppb (42) 0.11 ppb (2) N/A 4.8 μg/m3 (20) 42.0
 
May 18, 2022, 1 a.m. N/A 0.1 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 46.0 ppb (43) 0.11 ppb (2) N/A 5.5 μg/m3 (23) 43.0
 
May 18, 2022, midnight N/A 0.1 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 46.0 ppb (43) 0.11 ppb (2) N/A 4.4 μg/m3 (19) 43.0
 
May 17, 2022, 11 p.m. N/A 0.1 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 46.0 ppb (43) 0.11 ppb (2) N/A 2.7 μg/m3 (12) 43.0
 
May 17, 2022, 10 p.m. N/A 0.1 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 45.0 ppb (42) 0.11 ppb (2) N/A 2.3 μg/m3 (10) 42.0
 
May 17, 2022, 9 p.m. N/A 1.8 ppb (2) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 43.0 ppb (40) 0.11 ppb (2) N/A 3.2 μg/m3 (14) 40.0
 
May 17, 2022, 9 p.m. N/A 1.8 ppb (2) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 43.0 ppb (40) 0.11 ppb (2) N/A 3.2 μg/m3 (14) 40.0
 
May 17, 2022, 8 p.m. N/A 1.6 ppb (2) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 43.0 ppb (40) 0.11 ppb (2) N/A 3.4 μg/m3 (15) 40.0
 
May 17, 2022, 7 p.m. N/A 1.8 ppb (2) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 42.0 ppb (39) 0.12 ppb (2) N/A 3.7 μg/m3 (16) 39.0
 
May 17, 2022, 7 p.m. N/A 1.8 ppb (2) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 42.0 ppb (39) 0.12 ppb (2) N/A 3.7 μg/m3 (16) 39.0