AQSQID: 000100202

Site Name: Prg Plaza 400

Location: Prince George (Civic Centre), CC

Reporting: True, Located: True

Current AQI: 27.0

Prince George (Civic Centre) CC, CA: 53.9147, -122.7419

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
April 1, 2020, 7 p.m. N/A 1.4 ppb (1) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 35.0 ppb (27) N/A N/A 6.0 μg/m3 (25) 27.0
 
April 1, 2020, 6 p.m. N/A 2.0 ppb (2) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 34.0 ppb (26) N/A N/A 6.8 μg/m3 (28) 28.0
 
April 1, 2020, 5 p.m. N/A 1.9 ppb (2) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 33.0 ppb (25) N/A N/A 7.0 μg/m3 (29) 29.0
 
April 1, 2020, 4 p.m. N/A 1.5 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 32.0 ppb (25) N/A N/A 6.4 μg/m3 (27) 27.0
 
April 1, 2020, 3 p.m. N/A 1.6 ppb (1) N/A 4.0 ppb (4) N/A N/A 29.0 ppb (22) N/A N/A 4.3 μg/m3 (18) 22.0
 
April 1, 2020, 2 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) N/A N/A N/A 4.8 μg/m3 (20) 20.0
 
April 1, 2020, 1 p.m. N/A 1.9 ppb (2) N/A 14.0 ppb (13) N/A 1.0 ppb (1) 19.0 ppb (15) N/A N/A 6.1 μg/m3 (25) 25.0
 
April 1, 2020, noon N/A 0.8 ppb (1) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 28.0 ppb (22) N/A N/A 4.9 μg/m3 (20) 22.0
 
April 1, 2020, 11 a.m. N/A 0.5 ppb (0) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 30.0 ppb (23) N/A N/A 4.9 μg/m3 (20) 23.0
 
April 1, 2020, 10 a.m. N/A 0.3 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 31.0 ppb (24) N/A N/A 5.6 μg/m3 (23) 24.0
 
April 1, 2020, 9 a.m. N/A 0.5 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 31.0 ppb (24) N/A N/A 5.6 μg/m3 (23) 24.0
 
April 1, 2020, 8 a.m. N/A 0.2 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 32.0 ppb (25) N/A N/A 5.4 μg/m3 (23) 25.0
 
April 1, 2020, 7 a.m. N/A 0.7 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 31.0 ppb (24) N/A N/A 5.1 μg/m3 (21) 24.0
 
April 1, 2020, 6 a.m. N/A 0.4 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 30.0 ppb (23) N/A N/A 5.2 μg/m3 (22) 23.0
 
April 1, 2020, 5 a.m. N/A 0.3 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 32.0 ppb (25) N/A N/A 5.5 μg/m3 (23) 25.0
 
April 1, 2020, 4 a.m. N/A 0.5 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 31.0 ppb (24) N/A N/A 5.3 μg/m3 (22) 24.0
 
April 1, 2020, 3 a.m. N/A 0.6 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 31.0 ppb (24) N/A N/A 5.4 μg/m3 (23) 24.0
 
April 1, 2020, 2 a.m. N/A 0.3 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 31.0 ppb (24) N/A N/A 5.8 μg/m3 (24) 24.0
 
April 1, 2020, 1 a.m. N/A 0.6 ppb (1) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 30.0 ppb (23) N/A N/A 6.5 μg/m3 (27) 27.0
 
April 1, 2020, midnight N/A 1.0 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 30.0 ppb (23) N/A N/A 5.9 μg/m3 (25) 25.0
 
March 31, 2020, 11 p.m. N/A 1.5 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 30.0 ppb (23) N/A N/A 3.9 μg/m3 (16) 23.0
 
March 31, 2020, 10 p.m. N/A 1.8 ppb (2) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 29.0 ppb (22) N/A N/A 4.6 μg/m3 (19) 22.0
 
March 31, 2020, 9 p.m. N/A 0.5 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 31.0 ppb (24) N/A N/A 3.8 μg/m3 (16) 24.0
 
March 31, 2020, 8 p.m. N/A 0.7 ppb (1) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 30.0 ppb (23) N/A N/A 3.9 μg/m3 (16) 23.0
 
March 31, 2020, 7 p.m. N/A 0.9 ppb (1) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 30.0 ppb (23) N/A N/A 3.9 μg/m3 (16) 23.0
 
March 31, 2020, 6 p.m. N/A 1.4 ppb (1) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 29.0 ppb (22) N/A N/A 4.1 μg/m3 (17) 22.0
 
March 31, 2020, 5 p.m. N/A 0.8 ppb (1) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 30.0 ppb (23) N/A N/A 4.1 μg/m3 (17) 23.0
 
March 31, 2020, 4 p.m. N/A 1.6 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 28.0 ppb (22) N/A N/A 3.9 μg/m3 (16) 22.0
 
March 31, 2020, 3 p.m. N/A 2.4 ppb (2) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 25.0 ppb (19) N/A N/A 3.3 μg/m3 (14) 19.0
 
March 31, 2020, 2 p.m. N/A 1.7 ppb (2) N/A 6.0 ppb (6) N/A N/A 24.0 ppb (18) N/A N/A 3.4 μg/m3 (14) 18.0
 
March 31, 2020, 1 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) N/A N/A N/A 3.4 μg/m3 (14) 14.0
 
March 31, 2020, noon N/A 0.8 ppb (1) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 25.0 ppb (19) N/A N/A 3.9 μg/m3 (16) 19.0
 
March 31, 2020, 11 a.m. N/A 0.5 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 27.0 ppb (21) N/A N/A 3.9 μg/m3 (16) 21.0
 
March 31, 2020, 10 a.m. N/A 0.7 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 27.0 ppb (21) N/A N/A 4.0 μg/m3 (17) 21.0
 
March 31, 2020, 9 a.m. N/A 0.6 ppb (1) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 27.0 ppb (21) N/A N/A 3.8 μg/m3 (16) 21.0
 
March 31, 2020, 8 a.m. N/A 0.4 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 27.0 ppb (21) N/A N/A 3.7 μg/m3 (15) 21.0
 
March 31, 2020, 7 a.m. N/A 0.4 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 27.0 ppb (21) N/A N/A 4.6 μg/m3 (19) 21.0
 
March 31, 2020, 6 a.m. N/A 0.3 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 26.0 ppb (20) N/A N/A 5.0 μg/m3 (21) 21.0
 
March 31, 2020, 5 a.m. N/A 0.3 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 27.0 ppb (21) N/A N/A 5.4 μg/m3 (23) 23.0
 
March 31, 2020, 4 a.m. N/A 0.2 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 27.0 ppb (21) N/A N/A 5.6 μg/m3 (23) 23.0
 
March 31, 2020, 3 a.m. N/A 0.4 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 28.0 ppb (22) N/A N/A 5.8 μg/m3 (24) 24.0
 
March 31, 2020, 2 a.m. N/A 0.3 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 27.0 ppb (21) N/A N/A 6.0 μg/m3 (25) 25.0
 
March 31, 2020, 1 a.m. N/A 1.9 ppb (2) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 26.0 ppb (20) N/A N/A 6.4 μg/m3 (27) 27.0
 
March 31, 2020, midnight N/A 1.4 ppb (1) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 27.0 ppb (21) N/A N/A 5.1 μg/m3 (21) 21.0
 
March 30, 2020, 11 p.m. N/A 1.4 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 29.0 ppb (22) N/A N/A 4.6 μg/m3 (19) 22.0
 
March 30, 2020, 10 p.m. N/A 1.1 ppb (1) N/A 4.0 ppb (4) N/A 1.0 ppb (1) 31.0 ppb (24) N/A N/A 4.7 μg/m3 (20) 24.0
 
March 30, 2020, 9 p.m. N/A 1.8 ppb (2) N/A 4.0 ppb (4) N/A 1.0 ppb (1) 31.0 ppb (24) N/A N/A 5.5 μg/m3 (23) 24.0
 
March 30, 2020, 8 p.m. N/A 1.6 ppb (1) N/A 4.0 ppb (4) N/A 1.0 ppb (1) 31.0 ppb (24) N/A N/A 5.4 μg/m3 (23) 24.0
 
March 30, 2020, 7 p.m. N/A 0.9 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 32.0 ppb (25) N/A N/A 5.0 μg/m3 (21) 25.0
 
March 30, 2020, 6 p.m. N/A 0.9 ppb (1) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 32.0 ppb (25) N/A N/A 4.6 μg/m3 (19) 25.0
 
March 30, 2020, 5 p.m. N/A 0.8 ppb (1) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 31.0 ppb (24) N/A N/A 4.4 μg/m3 (18) 24.0
 
March 30, 2020, 4 p.m. N/A 1.2 ppb (1) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 30.0 ppb (23) N/A N/A 3.9 μg/m3 (16) 23.0
 
March 30, 2020, 3 p.m. N/A 0.9 ppb (1) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 30.0 ppb (23) N/A N/A 3.4 μg/m3 (14) 23.0
 
March 30, 2020, 2 p.m. N/A 0.7 ppb (1) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 30.0 ppb (23) N/A N/A 3.7 μg/m3 (15) 23.0
 
March 30, 2020, 1 p.m. N/A 0.8 ppb (1) N/A 2.0 ppb (2) N/A N/A 30.0 ppb (23) N/A N/A 3.8 μg/m3 (16) 23.0
 
March 30, 2020, noon N/A N/A N/A N/A N/A 0.0 ppb (0) N/A N/A N/A 4.0 μg/m3 (17) 17.0
 
March 30, 2020, 11 a.m. N/A 0.2 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 30.0 ppb (23) N/A N/A 4.1 μg/m3 (17) 23.0
 
March 30, 2020, 10 a.m. N/A 0.3 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 30.0 ppb (23) N/A N/A 4.4 μg/m3 (18) 23.0
 
March 30, 2020, 9 a.m. N/A 0.2 ppb (0) N/A 3.0 ppb (3) N/A 1.0 ppb (1) 28.0 ppb (22) N/A N/A 5.2 μg/m3 (22) 22.0
 
March 30, 2020, 8 a.m. N/A 0.7 ppb (1) N/A 5.0 ppb (5) N/A 1.0 ppb (1) 26.0 ppb (20) N/A N/A 6.6 μg/m3 (28) 28.0
 
March 30, 2020, 7 a.m. N/A 0.6 ppb (1) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 26.0 ppb (20) N/A N/A 5.3 μg/m3 (22) 22.0
 
March 30, 2020, 6 a.m. N/A 0.6 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 27.0 ppb (21) N/A N/A 5.0 μg/m3 (21) 21.0
 
March 30, 2020, 5 a.m. N/A 0.3 ppb (0) N/A 2.0 ppb (2) N/A 1.0 ppb (1) 27.0 ppb (21) N/A N/A 4.8 μg/m3 (20) 21.0
 
March 30, 2020, 4 a.m. N/A 0.2 ppb (0) N/A 3.0 ppb (3) N/A 1.0 ppb (1) 26.0 ppb (20) N/A N/A 5.0 μg/m3 (21) 21.0
 
March 30, 2020, 3 a.m. N/A 0.3 ppb (0) N/A 3.0 ppb (3) N/A 1.0 ppb (1) 25.0 ppb (19) N/A N/A 4.9 μg/m3 (20) 20.0
 
March 30, 2020, 2 a.m. N/A 0.2 ppb (0) N/A 2.0 ppb (2) N/A 1.0 ppb (1) 28.0 ppb (22) N/A N/A 4.1 μg/m3 (17) 22.0
 
March 30, 2020, 1 a.m. N/A 0.3 ppb (0) N/A 2.0 ppb (2) N/A 3.0 ppb (4) 35.0 ppb (27) N/A N/A 2.4 μg/m3 (10) 27.0
 
March 30, 2020, midnight N/A 1.8 ppb (2) N/A 5.0 ppb (5) N/A 5.0 ppb (7) 35.0 ppb (27) N/A N/A 3.2 μg/m3 (13) 27.0
 
March 29, 2020, 11 p.m. N/A 0.4 ppb (0) N/A 2.0 ppb (2) N/A 2.0 ppb (3) 38.0 ppb (29) N/A N/A 2.6 μg/m3 (11) 29.0
 
March 29, 2020, 10 p.m. N/A 0.9 ppb (1) N/A 4.0 ppb (4) N/A 3.0 ppb (4) 36.0 ppb (28) N/A N/A 3.2 μg/m3 (13) 28.0
 
March 29, 2020, 9 p.m. N/A 1.5 ppb (1) N/A 5.0 ppb (5) N/A 4.0 ppb (6) 33.0 ppb (25) N/A N/A 5.0 μg/m3 (21) 25.0
 
March 29, 2020, 8 p.m. N/A 7.6 ppb (7) N/A 12.0 ppb (11) N/A 19.0 ppb (27) 21.0 ppb (16) N/A N/A 29.4 μg/m3 (87) 87.0
 
March 29, 2020, 7 p.m. N/A 8.7 ppb (8) N/A 12.0 ppb (11) N/A 26.0 ppb (37) 18.0 ppb (14) N/A N/A 29.4 μg/m3 (87) 87.0
 
March 29, 2020, 6 p.m. N/A 9.9 ppb (9) N/A 12.0 ppb (11) N/A 22.0 ppb (31) 15.0 ppb (12) N/A N/A 23.7 μg/m3 (75) 75.0
 
March 29, 2020, 5 p.m. N/A 12.3 ppb (11) N/A 14.0 ppb (13) N/A 17.0 ppb (24) 13.0 ppb (10) N/A N/A 22.7 μg/m3 (73) 73.0
 
March 29, 2020, 4 p.m. N/A 5.5 ppb (5) N/A 12.0 ppb (11) N/A 6.0 ppb (9) 12.0 ppb (9) N/A N/A 16.9 μg/m3 (60) 60.0
 
March 29, 2020, 3 p.m. N/A 3.8 ppb (4) N/A 10.0 ppb (9) N/A 2.0 ppb (3) 13.0 ppb (10) N/A N/A 9.7 μg/m3 (40) 40.0
 
March 29, 2020, 2 p.m. N/A 5.6 ppb (5) N/A 14.0 ppb (13) N/A 1.0 ppb (1) 10.0 ppb (8) N/A N/A 11.3 μg/m3 (47) 47.0
 
March 29, 2020, 1 p.m. N/A 2.6 ppb (2) N/A 14.0 ppb (13) N/A 1.0 ppb (1) 9.0 ppb (7) N/A N/A 10.7 μg/m3 (45) 45.0
 
March 29, 2020, noon N/A 0.8 ppb (1) N/A 6.0 ppb (6) N/A N/A 17.0 ppb (13) N/A N/A 9.4 μg/m3 (39) 39.0
 
March 29, 2020, 11 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) N/A N/A N/A 8.0 μg/m3 (33) 33.0
 
March 29, 2020, 10 a.m. N/A 1.3 ppb (1) N/A 7.0 ppb (6) N/A 0.0 ppb (0) 18.0 ppb (14) N/A N/A 7.9 μg/m3 (33) 33.0
 
March 29, 2020, 9 a.m. N/A 1.3 ppb (1) N/A 7.0 ppb (6) N/A 0.0 ppb (0) 17.0 ppb (13) N/A N/A 9.3 μg/m3 (39) 39.0
 
March 29, 2020, 8 a.m. N/A 2.4 ppb (2) N/A 9.0 ppb (8) N/A 1.0 ppb (1) 16.0 ppb (12) N/A N/A 10.0 μg/m3 (42) 42.0
 
March 29, 2020, 7 a.m. N/A 3.3 ppb (3) N/A 12.0 ppb (11) N/A 1.0 ppb (1) 13.0 ppb (10) N/A N/A 8.6 μg/m3 (36) 36.0
 
March 29, 2020, 6 a.m. N/A 5.6 ppb (5) N/A 14.0 ppb (13) N/A 1.0 ppb (1) 11.0 ppb (8) N/A N/A 8.3 μg/m3 (35) 35.0
 
March 29, 2020, 5 a.m. N/A 2.7 ppb (3) N/A 12.0 ppb (11) N/A 1.0 ppb (1) 13.0 ppb (10) N/A N/A 7.3 μg/m3 (30) 30.0
 
March 29, 2020, 4 a.m. N/A 3.0 ppb (3) N/A 12.0 ppb (11) N/A 1.0 ppb (1) 13.0 ppb (10) N/A N/A 10.0 μg/m3 (42) 42.0
 
March 29, 2020, 3 a.m. N/A 2.5 ppb (2) N/A 9.0 ppb (8) N/A 1.0 ppb (1) 15.0 ppb (12) N/A N/A 8.2 μg/m3 (34) 34.0
 
March 29, 2020, 2 a.m. N/A 1.0 ppb (1) N/A 8.0 ppb (7) N/A 1.0 ppb (1) 16.0 ppb (12) N/A N/A 6.7 μg/m3 (28) 28.0
 
March 29, 2020, 1 a.m. N/A 1.5 ppb (1) N/A 6.0 ppb (6) N/A 2.0 ppb (3) 20.0 ppb (15) N/A N/A 5.3 μg/m3 (22) 22.0
 
March 29, 2020, midnight N/A 2.4 ppb (2) N/A 6.0 ppb (6) N/A 1.0 ppb (1) 20.0 ppb (15) N/A N/A 3.9 μg/m3 (16) 16.0
 
March 28, 2020, 11 p.m. N/A 2.8 ppb (3) N/A 7.0 ppb (6) N/A 2.0 ppb (3) 20.0 ppb (15) N/A N/A 7.0 μg/m3 (29) 29.0
 
March 28, 2020, 10 p.m. N/A 4.6 ppb (4) N/A 9.0 ppb (8) N/A 2.0 ppb (3) 18.0 ppb (14) N/A N/A 7.2 μg/m3 (30) 30.0
 
March 28, 2020, 9 p.m. N/A 7.9 ppb (7) N/A 10.0 ppb (9) N/A 2.0 ppb (3) 17.0 ppb (13) N/A N/A 7.2 μg/m3 (30) 30.0
 
March 28, 2020, 8 p.m. N/A 3.8 ppb (4) N/A 8.0 ppb (7) N/A 1.0 ppb (1) 21.0 ppb (16) N/A N/A 4.8 μg/m3 (20) 20.0
 
March 28, 2020, 7 p.m. N/A 0.4 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 31.0 ppb (24) N/A N/A 1.7 μg/m3 (7) 24.0
 
March 28, 2020, 6 p.m. N/A 0.5 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 30.0 ppb (23) N/A N/A 2.8 μg/m3 (12) 23.0
 
March 28, 2020, 5 p.m. N/A 0.5 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 30.0 ppb (23) N/A N/A 2.8 μg/m3 (12) 23.0
 
March 28, 2020, 4 p.m. N/A 0.2 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 31.0 ppb (24) N/A N/A 2.1 μg/m3 (9) 24.0
 
March 28, 2020, 3 p.m. N/A 0.1 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 31.0 ppb (24) N/A N/A 2.9 μg/m3 (12) 24.0
 
March 28, 2020, 2 p.m. N/A 0.3 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 29.0 ppb (22) N/A N/A 2.5 μg/m3 (10) 22.0
 
March 28, 2020, 1 p.m. N/A 0.1 ppb (0) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 24.0 ppb (18) N/A N/A 3.4 μg/m3 (14) 18.0
 
March 28, 2020, noon N/A 0.5 ppb (0) N/A 8.0 ppb (7) N/A 0.0 ppb (0) 19.0 ppb (15) N/A N/A 5.3 μg/m3 (22) 22.0
 
March 28, 2020, 11 a.m. N/A 1.0 ppb (1) N/A 10.0 ppb (9) N/A N/A 16.0 ppb (12) N/A N/A 3.5 μg/m3 (15) 15.0
 
March 28, 2020, 10 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) N/A N/A N/A 4.9 μg/m3 (20) 20.0
 
March 28, 2020, 9 a.m. N/A 3.0 ppb (3) N/A 12.0 ppb (11) N/A 0.0 ppb (0) 17.0 ppb (13) N/A N/A 11.3 μg/m3 (47) 47.0
 
March 28, 2020, 8 a.m. N/A 1.6 ppb (1) N/A 15.0 ppb (14) N/A 0.0 ppb (0) 14.0 ppb (11) N/A N/A 7.7 μg/m3 (32) 32.0
 
March 28, 2020, 7 a.m. N/A 0.4 ppb (0) N/A 9.0 ppb (8) N/A 0.0 ppb (0) 20.0 ppb (15) N/A N/A 7.2 μg/m3 (30) 30.0
 
March 28, 2020, 6 a.m. N/A 0.0 ppb (0) N/A 11.0 ppb (10) N/A 0.0 ppb (0) 20.0 ppb (15) N/A N/A 9.6 μg/m3 (40) 40.0
 
March 28, 2020, 5 a.m. N/A 0.6 ppb (1) N/A 9.0 ppb (8) N/A 0.0 ppb (0) 20.0 ppb (15) N/A N/A 5.2 μg/m3 (22) 22.0
 
March 28, 2020, 4 a.m. N/A 0.1 ppb (0) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 23.0 ppb (18) N/A N/A 7.0 μg/m3 (29) 29.0
 
March 28, 2020, 3 a.m. N/A 0.0 ppb (0) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 28.0 ppb (22) N/A N/A 7.5 μg/m3 (31) 31.0
 
March 28, 2020, 2 a.m. N/A 0.2 ppb (0) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 26.0 ppb (20) N/A N/A 10.5 μg/m3 (44) 44.0
 
March 28, 2020, 1 a.m. N/A 0.3 ppb (0) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 29.0 ppb (22) N/A N/A 10.1 μg/m3 (42) 42.0
 
March 28, 2020, midnight N/A 1.3 ppb (1) N/A 9.0 ppb (8) N/A 0.0 ppb (0) 25.0 ppb (19) N/A N/A 3.4 μg/m3 (14) 19.0
 
March 27, 2020, 11 p.m. N/A 0.7 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 32.0 ppb (25) N/A N/A 6.0 μg/m3 (25) 25.0
 
March 27, 2020, 10 p.m. N/A 1.0 ppb (1) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 31.0 ppb (24) N/A N/A 2.8 μg/m3 (12) 24.0
 
March 27, 2020, 9 p.m. N/A 1.0 ppb (1) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 31.0 ppb (24) N/A N/A 2.8 μg/m3 (12) 24.0
 
March 27, 2020, 8 p.m. N/A 1.3 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 29.0 ppb (22) N/A N/A 2.7 μg/m3 (11) 22.0
 
March 27, 2020, 7 p.m. N/A 0.9 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 29.0 ppb (22) N/A N/A 3.1 μg/m3 (13) 22.0
 
March 27, 2020, 6 p.m. N/A 0.7 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 29.0 ppb (22) N/A N/A 3.4 μg/m3 (14) 22.0
 
March 27, 2020, 5 p.m. N/A 0.9 ppb (1) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 29.0 ppb (22) N/A N/A 3.4 μg/m3 (14) 22.0
 
March 27, 2020, 4 p.m. N/A 0.6 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 31.0 ppb (24) N/A N/A 2.5 μg/m3 (10) 24.0
 
March 27, 2020, 3 p.m. N/A 0.6 ppb (1) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 31.0 ppb (24) N/A N/A 3.0 μg/m3 (12) 24.0
 
March 27, 2020, 2 p.m. N/A 0.3 ppb (0) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 30.0 ppb (23) N/A N/A 4.4 μg/m3 (18) 23.0
 
March 27, 2020, 1 p.m. N/A 0.1 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 29.0 ppb (22) N/A N/A 4.5 μg/m3 (19) 22.0
 
March 27, 2020, noon N/A 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 29.0 ppb (22) N/A N/A 3.9 μg/m3 (16) 22.0
 
March 27, 2020, 11 a.m. N/A -0.1 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 28.0 ppb (22) N/A N/A 3.7 μg/m3 (15) 22.0
 
March 27, 2020, 10 a.m. N/A 0.0 ppb (0) N/A 2.0 ppb (2) N/A N/A 28.0 ppb (22) N/A N/A 4.3 μg/m3 (18) 22.0
 
March 27, 2020, 9 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) N/A N/A N/A 3.9 μg/m3 (16) 16.0
 
March 27, 2020, 8 a.m. N/A 0.1 ppb (0) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 28.0 ppb (22) N/A N/A 4.0 μg/m3 (17) 22.0
 
March 27, 2020, 7 a.m. N/A 0.1 ppb (0) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 28.0 ppb (22) N/A N/A 5.2 μg/m3 (22) 22.0
 
March 27, 2020, 6 a.m. N/A -0.1 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 30.0 ppb (23) N/A N/A 5.2 μg/m3 (22) 23.0
 
March 27, 2020, 5 a.m. N/A 0.1 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 30.0 ppb (23) N/A N/A 5.6 μg/m3 (23) 23.0
 
March 27, 2020, 4 a.m. N/A 0.0 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 30.0 ppb (23) N/A N/A 3.8 μg/m3 (16) 23.0
 
March 27, 2020, 3 a.m. N/A 0.1 ppb (0) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 30.0 ppb (23) N/A N/A 3.9 μg/m3 (16) 23.0
 
March 27, 2020, 2 a.m. N/A 0.2 ppb (0) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 31.0 ppb (24) N/A N/A 5.2 μg/m3 (22) 24.0
 
March 27, 2020, 1 a.m. N/A 0.4 ppb (0) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 32.0 ppb (25) N/A N/A 4.9 μg/m3 (20) 25.0
 
March 27, 2020, midnight N/A 0.7 ppb (1) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 33.0 ppb (25) N/A N/A 5.8 μg/m3 (24) 25.0
 
March 26, 2020, 11 p.m. N/A 0.6 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 36.0 ppb (28) N/A N/A 3.6 μg/m3 (15) 28.0
 
March 26, 2020, 10 p.m. N/A 0.8 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 36.0 ppb (28) N/A N/A 4.1 μg/m3 (17) 28.0
 
March 26, 2020, 9 p.m. N/A 1.1 ppb (1) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 36.0 ppb (28) N/A N/A 4.3 μg/m3 (18) 28.0
 
March 26, 2020, 8 p.m. N/A 1.2 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 38.0 ppb (29) N/A N/A 4.7 μg/m3 (20) 29.0
 
March 26, 2020, 7 p.m. N/A 1.4 ppb (1) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 37.0 ppb (28) N/A N/A 6.8 μg/m3 (28) 28.0
 
March 26, 2020, 6 p.m. N/A 1.1 ppb (1) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 37.0 ppb (28) N/A N/A 6.0 μg/m3 (25) 28.0
 
March 26, 2020, 5 p.m. N/A 0.9 ppb (1) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 37.0 ppb (28) N/A N/A 5.6 μg/m3 (23) 28.0
 
March 26, 2020, 4 p.m. N/A 1.0 ppb (1) N/A 7.0 ppb (6) N/A 0.0 ppb (0) 36.0 ppb (28) N/A N/A 5.4 μg/m3 (23) 28.0
 
March 26, 2020, 3 p.m. N/A 0.5 ppb (0) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 37.0 ppb (28) N/A N/A 5.7 μg/m3 (24) 28.0
 
March 26, 2020, 2 p.m. N/A 0.2 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 40.0 ppb (31) N/A N/A 5.7 μg/m3 (24) 31.0
 
March 26, 2020, 1 p.m. N/A 0.1 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 41.0 ppb (32) N/A N/A 6.0 μg/m3 (25) 32.0
 
March 26, 2020, noon N/A 0.0 ppb (0) N/A 7.0 ppb (6) N/A 0.0 ppb (0) 38.0 ppb (29) N/A N/A 6.8 μg/m3 (28) 29.0
 
March 26, 2020, 11 a.m. N/A 0.0 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 42.0 ppb (32) N/A N/A 5.3 μg/m3 (22) 32.0
 
March 26, 2020, 10 a.m. N/A 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 42.0 ppb (32) N/A N/A 5.7 μg/m3 (24) 32.0
 
March 26, 2020, 9 a.m. N/A -0.1 ppb (0) N/A 2.0 ppb (2) N/A N/A 43.0 ppb (33) N/A N/A 5.2 μg/m3 (22) 33.0
 
March 26, 2020, 8 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) N/A N/A N/A 4.7 μg/m3 (20) 20.0
 
March 26, 2020, 7 a.m. N/A 0.1 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 43.0 ppb (33) N/A N/A 6.1 μg/m3 (25) 33.0
 
March 26, 2020, 6 a.m. N/A 0.5 ppb (0) N/A 8.0 ppb (7) N/A 0.0 ppb (0) 38.0 ppb (29) N/A N/A 5.6 μg/m3 (23) 29.0
 
March 26, 2020, 5 a.m. N/A 2.1 ppb (2) N/A 12.0 ppb (11) N/A 0.0 ppb (0) 33.0 ppb (25) N/A N/A 8.1 μg/m3 (34) 34.0
 
March 26, 2020, 4 a.m. N/A 0.5 ppb (0) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 38.0 ppb (29) N/A N/A 7.0 μg/m3 (29) 29.0
 
March 26, 2020, 3 a.m. N/A 0.1 ppb (0) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 42.0 ppb (32) N/A N/A 6.9 μg/m3 (29) 32.0
 
March 26, 2020, 2 a.m. N/A 0.3 ppb (0) N/A 11.0 ppb (10) N/A 0.0 ppb (0) 36.0 ppb (28) N/A N/A 7.3 μg/m3 (30) 30.0
 
March 26, 2020, 1 a.m. N/A 0.4 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 47.0 ppb (36) N/A N/A 4.0 μg/m3 (17) 36.0
 
March 26, 2020, midnight N/A 1.8 ppb (2) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 46.0 ppb (35) N/A N/A 3.6 μg/m3 (15) 35.0
 
March 25, 2020, 11 p.m. N/A 1.4 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 46.0 ppb (35) N/A N/A 3.5 μg/m3 (15) 35.0
 
March 25, 2020, 10 p.m. N/A 2.5 ppb (2) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 44.0 ppb (34) N/A N/A 3.5 μg/m3 (15) 34.0
 
March 25, 2020, 9 p.m. N/A 1.0 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 41.0 ppb (32) N/A N/A 3.8 μg/m3 (16) 32.0
 
March 25, 2020, 8 p.m. N/A 0.7 ppb (1) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 39.0 ppb (30) N/A N/A 3.9 μg/m3 (16) 30.0