AQSQID: CC0050103

Site Name: Saint-Jean-Baptiste

Location: Montréal (Pointe-aux-trembles), N/A

Reporting: True, Located: True

Current AQI: 32.0

Montréal (Pointe-aux-trembles) N/A, CA: 45.641026, -73.499682

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 N/A N/A 1.0 ppb (1) N/A 1.0 ppb (1) 42.0 ppb (32) N/A N/A 2.0 μg/m3 (8) 32.0
 
April 1, 2020, 6 p.m. N/A N/A N/A 1.0 ppb (1) N/A 1.0 ppb (1) 42.0 ppb (32) N/A N/A N/A 32.0
 
April 1, 2020, 5 p.m. N/A N/A N/A 1.0 ppb (1) N/A 1.0 ppb (1) 42.0 ppb (32) N/A N/A 3.3 μg/m3 (14) 32.0
 
April 1, 2020, 4 p.m. N/A N/A N/A 1.0 ppb (1) N/A 1.0 ppb (1) 42.0 ppb (32) N/A N/A 4.2 μg/m3 (18) 32.0
 
April 1, 2020, 3 p.m. N/A N/A N/A 1.0 ppb (1) N/A 1.0 ppb (1) 41.0 ppb (32) N/A N/A 3.5 μg/m3 (15) 32.0
 
April 1, 2020, 2 p.m. N/A N/A N/A 1.0 ppb (1) N/A 1.0 ppb (1) 41.0 ppb (32) N/A N/A 2.9 μg/m3 (12) 32.0
 
April 1, 2020, 1 p.m. N/A N/A N/A 1.0 ppb (1) N/A 1.0 ppb (1) 41.0 ppb (32) N/A N/A 2.5 μg/m3 (10) 32.0
 
April 1, 2020, noon N/A N/A N/A 1.0 ppb (1) N/A 1.0 ppb (1) 40.0 ppb (31) N/A N/A 2.6 μg/m3 (11) 31.0
 
April 1, 2020, 11 a.m. N/A N/A N/A 3.0 ppb (3) N/A 2.0 ppb (3) 38.0 ppb (29) N/A N/A 4.5 μg/m3 (19) 29.0
 
April 1, 2020, 10 a.m. N/A N/A N/A 3.0 ppb (3) N/A 1.0 ppb (1) 37.0 ppb (28) N/A N/A 6.4 μg/m3 (27) 28.0
 
April 1, 2020, 9 a.m. N/A N/A N/A 2.0 ppb (2) N/A 1.0 ppb (1) 38.0 ppb (29) N/A N/A 4.1 μg/m3 (17) 29.0
 
April 1, 2020, 8 a.m. N/A N/A N/A 2.0 ppb (2) N/A 2.0 ppb (3) 41.0 ppb (32) N/A N/A 4.1 μg/m3 (17) 32.0
 
April 1, 2020, 7 a.m. N/A N/A N/A 3.0 ppb (3) N/A 2.0 ppb (3) 39.0 ppb (30) N/A N/A 6.1 μg/m3 (25) 30.0
 
April 1, 2020, 6 a.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 41.0 ppb (32) N/A N/A 2.5 μg/m3 (10) 32.0
 
April 1, 2020, 5 a.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 39.0 ppb (30) N/A N/A 2.5 μg/m3 (10) 30.0
 
April 1, 2020, 4 a.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 41.0 ppb (32) N/A N/A 3.9 μg/m3 (16) 32.0
 
April 1, 2020, 3 a.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 42.0 ppb (32) N/A N/A 3.4 μg/m3 (14) 32.0
 
April 1, 2020, 2 a.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 42.0 ppb (32) N/A N/A 3.3 μg/m3 (14) 32.0
 
April 1, 2020, 1 a.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 45.0 ppb (35) N/A N/A 3.5 μg/m3 (15) 35.0
 
April 1, 2020, midnight N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 44.0 ppb (34) N/A N/A 4.1 μg/m3 (17) 34.0
 
March 31, 2020, 11 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 44.0 ppb (34) N/A N/A 3.6 μg/m3 (15) 34.0
 
March 31, 2020, 10 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 45.0 ppb (35) N/A N/A 3.2 μg/m3 (13) 35.0
 
March 31, 2020, 9 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 46.0 ppb (35) N/A N/A 2.9 μg/m3 (12) 35.0
 
March 31, 2020, 8 p.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 47.0 ppb (36) N/A N/A 2.8 μg/m3 (12) 36.0
 
March 31, 2020, 7 p.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 47.0 ppb (36) N/A N/A 2.7 μg/m3 (11) 36.0
 
March 31, 2020, 6 p.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 46.0 ppb (35) N/A N/A 2.8 μg/m3 (12) 35.0
 
March 31, 2020, 5 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 44.0 ppb (34) N/A N/A 3.4 μg/m3 (14) 34.0
 
March 31, 2020, 4 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 43.0 ppb (33) N/A N/A 3.6 μg/m3 (15) 33.0
 
March 31, 2020, 3 p.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 42.0 ppb (32) N/A N/A 3.8 μg/m3 (16) 32.0
 
March 31, 2020, 2 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 40.0 ppb (31) N/A N/A 4.1 μg/m3 (17) 31.0
 
March 31, 2020, 1 p.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 39.0 ppb (30) N/A N/A 4.0 μg/m3 (17) 30.0
 
March 31, 2020, noon N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 37.0 ppb (28) N/A N/A 3.6 μg/m3 (15) 28.0
 
March 31, 2020, 11 a.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 35.0 ppb (27) N/A N/A 7.4 μg/m3 (31) 31.0
 
March 31, 2020, 10 a.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 35.0 ppb (27) N/A N/A 5.2 μg/m3 (22) 27.0
 
March 31, 2020, 9 a.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 35.0 ppb (27) N/A N/A 5.1 μg/m3 (21) 27.0
 
March 31, 2020, 8 a.m. N/A N/A 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
 
March 31, 2020, 7 a.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 37.0 ppb (28) N/A N/A 4.8 μg/m3 (20) 28.0
 
March 31, 2020, 6 a.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 37.0 ppb (28) N/A N/A 2.8 μg/m3 (12) 28.0
 
March 31, 2020, 5 a.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 36.0 ppb (28) N/A N/A 3.3 μg/m3 (14) 28.0
 
March 31, 2020, 4 a.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 35.0 ppb (27) N/A N/A 3.0 μg/m3 (12) 27.0
 
March 31, 2020, 3 a.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 35.0 ppb (27) N/A N/A 3.0 μg/m3 (12) 27.0
 
March 31, 2020, 2 a.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 34.0 ppb (26) N/A N/A 3.2 μg/m3 (13) 26.0
 
March 31, 2020, 1 a.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 33.0 ppb (25) N/A N/A 4.3 μg/m3 (18) 25.0
 
March 31, 2020, midnight N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 35.0 ppb (27) N/A N/A 3.7 μg/m3 (15) 27.0
 
March 30, 2020, 11 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 36.0 ppb (28) N/A N/A 5.2 μg/m3 (22) 28.0
 
March 30, 2020, 10 p.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 34.0 ppb (26) N/A N/A 7.7 μg/m3 (32) 32.0
 
March 30, 2020, 9 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 36.0 ppb (28) N/A N/A 5.6 μg/m3 (23) 28.0
 
March 30, 2020, 8 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 37.0 ppb (28) N/A N/A 3.3 μg/m3 (14) 28.0
 
March 30, 2020, 7 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 36.0 ppb (28) N/A N/A 4.1 μg/m3 (17) 28.0
 
March 30, 2020, 6 p.m. N/A N/A N/A 7.0 ppb (6) N/A 1.0 ppb (1) 30.0 ppb (23) N/A N/A 4.6 μg/m3 (19) 23.0
 
March 30, 2020, 5 p.m. N/A N/A N/A 2.0 ppb (2) N/A 1.0 ppb (1) 35.0 ppb (27) N/A N/A 1.7 μg/m3 (7) 27.0
 
March 30, 2020, 4 p.m. N/A N/A N/A 3.0 ppb (3) N/A 1.0 ppb (1) 34.0 ppb (26) N/A N/A 1.6 μg/m3 (7) 26.0
 
March 30, 2020, 3 p.m. N/A N/A N/A 7.0 ppb (6) N/A 1.0 ppb (1) 31.0 ppb (24) N/A N/A 1.7 μg/m3 (7) 24.0
 
March 30, 2020, 2 p.m. N/A N/A N/A 3.0 ppb (3) N/A 2.0 ppb (3) 34.0 ppb (26) N/A N/A 1.5 μg/m3 (6) 26.0
 
March 30, 2020, 1 p.m. N/A N/A N/A 6.0 ppb (6) N/A 2.0 ppb (3) 31.0 ppb (24) N/A N/A 1.4 μg/m3 (6) 24.0
 
March 30, 2020, noon N/A N/A N/A 7.0 ppb (6) N/A 2.0 ppb (3) 31.0 ppb (24) N/A N/A 1.4 μg/m3 (6) 24.0
 
March 30, 2020, 11 a.m. N/A N/A N/A 10.0 ppb (9) N/A 1.0 ppb (1) 29.0 ppb (22) N/A N/A 1.3 μg/m3 (5) 22.0
 
March 30, 2020, 10 a.m. N/A N/A N/A 9.0 ppb (8) N/A 1.0 ppb (1) 29.0 ppb (22) N/A N/A 1.4 μg/m3 (6) 22.0
 
March 30, 2020, 9 a.m. N/A N/A N/A 6.0 ppb (6) N/A 1.0 ppb (1) 32.0 ppb (25) N/A N/A 1.1 μg/m3 (5) 25.0
 
March 30, 2020, 8 a.m. N/A N/A N/A 8.0 ppb (7) N/A 0.0 ppb (0) 30.0 ppb (23) N/A N/A 1.1 μg/m3 (5) 23.0
 
March 30, 2020, 7 a.m. N/A N/A N/A 5.0 ppb (5) N/A 0.0 ppb (0) 35.0 ppb (27) N/A N/A 1.0 μg/m3 (4) 27.0
 
March 30, 2020, 6 a.m. N/A N/A N/A 4.0 ppb (4) N/A 0.0 ppb (0) 36.0 ppb (28) N/A N/A 1.0 μg/m3 (4) 28.0
 
March 30, 2020, 5 a.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 38.0 ppb (29) N/A N/A 1.3 μg/m3 (5) 29.0
 
March 30, 2020, 4 a.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 40.0 ppb (31) N/A N/A 1.8 μg/m3 (8) 31.0
 
March 30, 2020, 3 a.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 41.0 ppb (32) N/A N/A 2.2 μg/m3 (9) 32.0
 
March 30, 2020, 2 a.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 39.0 ppb (30) N/A N/A 2.4 μg/m3 (10) 30.0
 
March 30, 2020, 1 a.m. N/A N/A N/A 5.0 ppb (5) N/A 0.0 ppb (0) 37.0 ppb (28) N/A N/A 2.8 μg/m3 (12) 28.0
 
March 30, 2020, midnight N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 39.0 ppb (30) N/A N/A 2.5 μg/m3 (10) 30.0
 
March 29, 2020, 11 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 40.0 ppb (31) N/A N/A 2.5 μg/m3 (10) 31.0
 
March 29, 2020, 10 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 40.0 ppb (31) N/A N/A 2.7 μg/m3 (11) 31.0
 
March 29, 2020, 9 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 39.0 ppb (30) N/A N/A 2.0 μg/m3 (8) 30.0
 
March 29, 2020, 8 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 39.0 ppb (30) N/A N/A 2.7 μg/m3 (11) 30.0
 
March 29, 2020, 7 p.m. N/A N/A N/A 4.0 ppb (4) N/A 0.0 ppb (0) 35.0 ppb (27) N/A N/A 4.6 μg/m3 (19) 27.0
 
March 29, 2020, 6 p.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 36.0 ppb (28) N/A N/A 5.6 μg/m3 (23) 28.0
 
March 29, 2020, 5 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 37.0 ppb (28) N/A N/A 5.7 μg/m3 (24) 28.0
 
March 29, 2020, 4 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 34.0 ppb (26) N/A N/A 5.4 μg/m3 (23) 26.0
 
March 29, 2020, 3 p.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 27.0 ppb (21) N/A N/A 7.0 μg/m3 (29) 29.0
 
March 29, 2020, 2 p.m. N/A N/A N/A 4.0 ppb (4) N/A 0.0 ppb (0) 28.0 ppb (22) N/A N/A 5.4 μg/m3 (23) 23.0
 
March 29, 2020, 1 p.m. N/A N/A N/A 1.0 ppb (1) N/A 1.0 ppb (1) 31.0 ppb (24) N/A N/A 4.3 μg/m3 (18) 24.0
 
March 29, 2020, noon N/A N/A N/A 1.0 ppb (1) N/A 1.0 ppb (1) 31.0 ppb (24) N/A N/A 4.8 μg/m3 (20) 24.0
 
March 29, 2020, 11 a.m. N/A N/A N/A 3.0 ppb (3) N/A 1.0 ppb (1) 30.0 ppb (23) N/A N/A 4.9 μg/m3 (20) 23.0
 
March 29, 2020, 10 a.m. N/A N/A N/A 2.0 ppb (2) N/A 1.0 ppb (1) 32.0 ppb (25) N/A N/A 4.7 μg/m3 (20) 25.0
 
March 29, 2020, 9 a.m. N/A N/A N/A 3.0 ppb (3) N/A 3.0 ppb (4) 33.0 ppb (25) N/A N/A 5.9 μg/m3 (25) 25.0
 
March 29, 2020, 8 a.m. N/A N/A N/A 4.0 ppb (4) N/A 5.0 ppb (7) 33.0 ppb (25) N/A N/A 7.9 μg/m3 (33) 33.0
 
March 29, 2020, 7 a.m. N/A N/A N/A 3.0 ppb (3) N/A 4.0 ppb (6) 35.0 ppb (27) N/A N/A 6.0 μg/m3 (25) 27.0
 
March 29, 2020, 6 a.m. N/A N/A N/A 2.0 ppb (2) N/A 7.0 ppb (10) 35.0 ppb (27) N/A N/A 8.8 μg/m3 (37) 37.0
 
March 29, 2020, 5 a.m. N/A N/A N/A 2.0 ppb (2) N/A 2.0 ppb (3) 35.0 ppb (27) N/A N/A 5.6 μg/m3 (23) 27.0
 
March 29, 2020, 4 a.m. N/A N/A N/A 2.0 ppb (2) N/A 1.0 ppb (1) 35.0 ppb (27) N/A N/A 5.3 μg/m3 (22) 27.0
 
March 29, 2020, 3 a.m. N/A N/A N/A 2.0 ppb (2) N/A 1.0 ppb (1) 35.0 ppb (27) N/A N/A 5.6 μg/m3 (23) 27.0
 
March 29, 2020, 2 a.m. N/A N/A N/A 5.0 ppb (5) N/A 1.0 ppb (1) 33.0 ppb (25) N/A N/A 8.7 μg/m3 (36) 36.0
 
March 29, 2020, 1 a.m. N/A N/A N/A 6.0 ppb (6) N/A 12.0 ppb (17) 32.0 ppb (25) N/A N/A 12.8 μg/m3 (52) 52.0
 
March 29, 2020, midnight N/A N/A N/A 4.0 ppb (4) N/A 4.0 ppb (6) 35.0 ppb (27) N/A N/A 9.5 μg/m3 (40) 40.0
 
March 28, 2020, 11 p.m. N/A N/A N/A 3.0 ppb (3) N/A 5.0 ppb (7) 38.0 ppb (29) N/A N/A 7.3 μg/m3 (30) 30.0
 
March 28, 2020, 10 p.m. N/A N/A N/A 2.0 ppb (2) N/A 1.0 ppb (1) 39.0 ppb (30) N/A N/A 4.9 μg/m3 (20) 30.0
 
March 28, 2020, 9 p.m. N/A N/A N/A 1.0 ppb (1) N/A 1.0 ppb (1) 40.0 ppb (31) N/A N/A 4.7 μg/m3 (20) 31.0
 
March 28, 2020, 8 p.m. N/A N/A N/A 1.0 ppb (1) N/A 1.0 ppb (1) 40.0 ppb (31) N/A N/A 3.7 μg/m3 (15) 31.0
 
March 28, 2020, 7 p.m. N/A N/A N/A 2.0 ppb (2) N/A 6.0 ppb (9) 38.0 ppb (29) N/A N/A 6.6 μg/m3 (28) 29.0
 
March 28, 2020, 6 p.m. N/A N/A N/A 2.0 ppb (2) N/A 5.0 ppb (7) 38.0 ppb (29) N/A N/A 6.2 μg/m3 (26) 29.0
 
March 28, 2020, 5 p.m. N/A N/A N/A 2.0 ppb (2) N/A 5.0 ppb (7) 37.0 ppb (28) N/A N/A 7.3 μg/m3 (30) 30.0
 
March 28, 2020, 4 p.m. N/A N/A N/A 1.0 ppb (1) N/A 3.0 ppb (4) 36.0 ppb (28) N/A N/A 5.3 μg/m3 (22) 28.0
 
March 28, 2020, 3 p.m. N/A N/A N/A 1.0 ppb (1) N/A 1.0 ppb (1) 35.0 ppb (27) N/A N/A 3.7 μg/m3 (15) 27.0
 
March 28, 2020, 2 p.m. N/A N/A N/A 2.0 ppb (2) N/A 1.0 ppb (1) 34.0 ppb (26) N/A N/A 4.3 μg/m3 (18) 26.0
 
March 28, 2020, 1 p.m. N/A N/A N/A 3.0 ppb (3) N/A 1.0 ppb (1) 30.0 ppb (23) N/A N/A 6.0 μg/m3 (25) 25.0
 
March 28, 2020, noon N/A N/A N/A 8.0 ppb (7) N/A 1.0 ppb (1) 19.0 ppb (15) N/A N/A 8.4 μg/m3 (35) 35.0
 
March 28, 2020, 11 a.m. N/A N/A N/A 12.0 ppb (11) N/A 0.0 ppb (0) 6.0 ppb (5) N/A N/A 11.5 μg/m3 (48) 48.0
 
March 28, 2020, 10 a.m. N/A N/A N/A 16.0 ppb (15) N/A 0.0 ppb (0) 3.0 ppb (2) N/A N/A 12.4 μg/m3 (51) 51.0
 
March 28, 2020, 9 a.m. N/A N/A N/A 20.0 ppb (19) N/A 0.0 ppb (0) 3.0 ppb (2) N/A N/A 13.6 μg/m3 (53) 53.0
 
March 28, 2020, 8 a.m. N/A N/A N/A 16.0 ppb (15) N/A 0.0 ppb (0) 7.0 ppb (5) N/A N/A 14.4 μg/m3 (55) 55.0
 
March 28, 2020, 7 a.m. N/A N/A N/A 14.0 ppb (13) N/A 0.0 ppb (0) 11.0 ppb (8) N/A N/A 13.5 μg/m3 (53) 53.0
 
March 28, 2020, 6 a.m. N/A N/A N/A 11.0 ppb (10) N/A 0.0 ppb (0) 15.0 ppb (12) N/A N/A 14.4 μg/m3 (55) 55.0
 
March 28, 2020, 5 a.m. N/A N/A N/A 9.0 ppb (8) N/A 0.0 ppb (0) 19.0 ppb (15) N/A N/A 12.5 μg/m3 (51) 51.0
 
March 28, 2020, 4 a.m. N/A N/A N/A 10.0 ppb (9) N/A 0.0 ppb (0) 19.0 ppb (15) N/A N/A 15.0 μg/m3 (56) 56.0
 
March 28, 2020, 3 a.m. N/A N/A N/A 10.0 ppb (9) N/A 0.0 ppb (0) 22.0 ppb (17) N/A N/A 12.7 μg/m3 (51) 51.0
 
March 28, 2020, 2 a.m. N/A N/A N/A 10.0 ppb (9) N/A 0.0 ppb (0) 27.0 ppb (21) N/A N/A 10.4 μg/m3 (43) 43.0
 
March 28, 2020, 1 a.m. N/A N/A N/A 11.0 ppb (10) N/A 0.0 ppb (0) 27.0 ppb (21) N/A N/A 9.9 μg/m3 (41) 41.0
 
March 28, 2020, midnight N/A N/A N/A 10.0 ppb (9) N/A 0.0 ppb (0) 29.0 ppb (22) N/A N/A 7.9 μg/m3 (33) 33.0
 
March 27, 2020, 11 p.m. N/A N/A N/A 12.0 ppb (11) N/A 2.0 ppb (3) 28.0 ppb (22) N/A N/A 5.5 μg/m3 (23) 23.0
 
March 27, 2020, 10 p.m. N/A N/A N/A 5.0 ppb (5) N/A 0.0 ppb (0) 35.0 ppb (27) N/A N/A 5.4 μg/m3 (23) 27.0
 
March 27, 2020, 9 p.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 37.0 ppb (28) N/A N/A 4.3 μg/m3 (18) 28.0
 
March 27, 2020, 8 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 36.0 ppb (28) N/A N/A 3.8 μg/m3 (16) 28.0
 
March 27, 2020, 7 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 37.0 ppb (28) N/A N/A 3.7 μg/m3 (15) 28.0
 
March 27, 2020, 6 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 37.0 ppb (28) N/A N/A 3.7 μg/m3 (15) 28.0
 
March 27, 2020, 5 p.m. N/A N/A N/A 2.0 ppb (2) N/A 1.0 ppb (1) 35.0 ppb (27) N/A N/A 4.0 μg/m3 (17) 27.0
 
March 27, 2020, 4 p.m. N/A N/A N/A 2.0 ppb (2) N/A 1.0 ppb (1) 34.0 ppb (26) N/A N/A 3.8 μg/m3 (16) 26.0
 
March 27, 2020, 3 p.m. N/A N/A N/A 3.0 ppb (3) N/A 2.0 ppb (3) 31.0 ppb (24) N/A N/A 3.4 μg/m3 (14) 24.0
 
March 27, 2020, 2 p.m. N/A N/A N/A 5.0 ppb (5) N/A 3.0 ppb (4) 27.0 ppb (21) N/A N/A 3.3 μg/m3 (14) 21.0
 
March 27, 2020, 1 p.m. N/A N/A N/A 6.0 ppb (6) N/A 4.0 ppb (6) 24.0 ppb (18) N/A N/A 2.9 μg/m3 (12) 18.0
 
March 27, 2020, noon N/A N/A N/A 13.0 ppb (12) N/A 10.0 ppb (14) 15.0 ppb (12) N/A N/A 6.0 μg/m3 (25) 25.0
 
March 27, 2020, 11 a.m. N/A N/A N/A 16.0 ppb (15) N/A 7.0 ppb (10) 11.0 ppb (8) N/A N/A 2.9 μg/m3 (12) 15.0
 
March 27, 2020, 10 a.m. N/A N/A N/A 8.0 ppb (7) N/A 2.0 ppb (3) 17.0 ppb (13) N/A N/A 0.9 μg/m3 (4) 13.0
 
March 27, 2020, 9 a.m. N/A N/A N/A 12.0 ppb (11) N/A 2.0 ppb (3) 13.0 ppb (10) N/A N/A 0.9 μg/m3 (4) 11.0
 
March 27, 2020, 8 a.m. N/A N/A N/A 7.0 ppb (6) N/A 2.0 ppb (3) 17.0 ppb (13) N/A N/A 0.5 μg/m3 (2) 13.0
 
March 27, 2020, 7 a.m. N/A N/A N/A 14.0 ppb (13) N/A 6.0 ppb (9) 13.0 ppb (10) N/A N/A 0.8 μg/m3 (3) 13.0
 
March 27, 2020, 6 a.m. N/A N/A N/A 9.0 ppb (8) N/A 3.0 ppb (4) 19.0 ppb (15) N/A N/A 1.2 μg/m3 (5) 15.0
 
March 27, 2020, 5 a.m. N/A N/A N/A 18.0 ppb (17) N/A 10.0 ppb (14) 14.0 ppb (11) N/A N/A 2.2 μg/m3 (9) 17.0
 
March 27, 2020, 4 a.m. N/A N/A N/A 8.0 ppb (7) N/A 4.0 ppb (6) 23.0 ppb (18) N/A N/A 2.1 μg/m3 (9) 18.0
 
March 27, 2020, 3 a.m. N/A N/A N/A 21.0 ppb (19) N/A 7.0 ppb (10) 12.0 ppb (9) N/A N/A 12.3 μg/m3 (51) 51.0
 
March 27, 2020, 2 a.m. N/A N/A N/A 14.0 ppb (13) N/A 0.0 ppb (0) 19.0 ppb (15) N/A N/A 23.7 μg/m3 (75) 75.0
 
March 27, 2020, 1 a.m. N/A N/A N/A 12.0 ppb (11) N/A 0.0 ppb (0) 21.0 ppb (16) N/A N/A 24.5 μg/m3 (77) 77.0
 
March 27, 2020, midnight N/A N/A N/A 17.0 ppb (16) N/A 0.0 ppb (0) 18.0 ppb (14) N/A N/A 18.2 μg/m3 (63) 63.0
 
March 26, 2020, 11 p.m. N/A N/A N/A 19.0 ppb (18) N/A 0.0 ppb (0) 22.0 ppb (17) N/A N/A 16.3 μg/m3 (59) 59.0
 
March 26, 2020, 10 p.m. N/A N/A N/A 10.0 ppb (9) N/A 0.0 ppb (0) 31.0 ppb (24) N/A N/A 12.0 μg/m3 (50) 50.0
 
March 26, 2020, 9 p.m. N/A N/A N/A 5.0 ppb (5) N/A 1.0 ppb (1) 38.0 ppb (29) N/A N/A 8.6 μg/m3 (36) 36.0
 
March 26, 2020, 8 p.m. N/A N/A N/A 6.0 ppb (6) N/A 3.0 ppb (4) 38.0 ppb (29) N/A N/A 4.5 μg/m3 (19) 29.0
 
March 26, 2020, 7 p.m. N/A N/A N/A 5.0 ppb (5) N/A 4.0 ppb (6) 39.0 ppb (30) N/A N/A 4.2 μg/m3 (18) 30.0
 
March 26, 2020, 6 p.m. N/A N/A N/A 6.0 ppb (6) N/A 3.0 ppb (4) 37.0 ppb (28) N/A N/A 4.6 μg/m3 (19) 28.0
 
March 26, 2020, 5 p.m. N/A N/A N/A N/A N/A 3.0 ppb (4) 37.0 ppb (28) N/A N/A 5.6 μg/m3 (23) 28.0
 
March 26, 2020, 4 p.m. N/A N/A N/A N/A N/A 3.0 ppb (4) 35.0 ppb (27) N/A N/A 7.2 μg/m3 (30) 30.0
 
March 26, 2020, 3 p.m. N/A N/A N/A N/A N/A 3.0 ppb (4) 31.0 ppb (24) N/A N/A 7.9 μg/m3 (33) 33.0
 
March 26, 2020, 2 p.m. N/A N/A N/A 7.0 ppb (6) N/A 2.0 ppb (3) 30.0 ppb (23) N/A N/A 7.4 μg/m3 (31) 31.0
 
March 26, 2020, 1 p.m. N/A N/A N/A 7.0 ppb (6) N/A 2.0 ppb (3) 29.0 ppb (22) N/A N/A 7.2 μg/m3 (30) 30.0
 
March 26, 2020, noon N/A N/A N/A 14.0 ppb (13) N/A 2.0 ppb (3) 22.0 ppb (17) N/A N/A 7.6 μg/m3 (32) 32.0
 
March 26, 2020, 11 a.m. N/A N/A N/A 16.0 ppb (15) N/A 1.0 ppb (1) 20.0 ppb (15) N/A N/A 7.9 μg/m3 (33) 33.0
 
March 26, 2020, 10 a.m. N/A N/A N/A 14.0 ppb (13) N/A 1.0 ppb (1) 22.0 ppb (17) N/A N/A 8.0 μg/m3 (33) 33.0
 
March 26, 2020, 9 a.m. N/A N/A N/A 10.0 ppb (9) N/A 1.0 ppb (1) 25.0 ppb (19) N/A N/A 8.1 μg/m3 (34) 34.0
 
March 26, 2020, 8 a.m. N/A N/A N/A 10.0 ppb (9) N/A 1.0 ppb (1) 26.0 ppb (20) N/A N/A 7.5 μg/m3 (31) 31.0
 
March 26, 2020, 7 a.m. N/A N/A N/A 2.0 ppb (2) N/A 1.0 ppb (1) 32.0 ppb (25) N/A N/A 7.4 μg/m3 (31) 31.0
 
March 26, 2020, 6 a.m. N/A N/A N/A 2.0 ppb (2) N/A 1.0 ppb (1) 34.0 ppb (26) N/A N/A 6.9 μg/m3 (29) 29.0
 
March 26, 2020, 5 a.m. N/A N/A N/A 8.0 ppb (7) N/A 2.0 ppb (3) 28.0 ppb (22) N/A N/A 7.7 μg/m3 (32) 32.0
 
March 26, 2020, 4 a.m. N/A N/A N/A 11.0 ppb (10) N/A 3.0 ppb (4) 26.0 ppb (20) N/A N/A 6.9 μg/m3 (29) 29.0
 
March 26, 2020, 3 a.m. N/A N/A N/A 12.0 ppb (11) N/A 2.0 ppb (3) 25.0 ppb (19) N/A N/A 7.0 μg/m3 (29) 29.0
 
March 26, 2020, 2 a.m. N/A N/A N/A 13.0 ppb (12) N/A 2.0 ppb (3) 26.0 ppb (20) N/A N/A 6.2 μg/m3 (26) 26.0
 
March 26, 2020, 1 a.m. N/A N/A N/A 4.0 ppb (4) N/A 0.0 ppb (0) 36.0 ppb (28) N/A N/A 6.1 μg/m3 (25) 28.0
 
March 26, 2020, midnight N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 38.0 ppb (29) N/A N/A 6.3 μg/m3 (26) 29.0
 
March 25, 2020, 11 p.m. N/A N/A N/A 6.0 ppb (6) N/A 1.0 ppb (1) 36.0 ppb (28) N/A N/A 5.9 μg/m3 (25) 28.0
 
March 25, 2020, 10 p.m. N/A N/A N/A 6.0 ppb (6) N/A 1.0 ppb (1) 37.0 ppb (28) N/A N/A 5.6 μg/m3 (23) 28.0
 
March 25, 2020, 9 p.m. N/A N/A N/A 6.0 ppb (6) N/A 1.0 ppb (1) 38.0 ppb (29) N/A N/A 4.3 μg/m3 (18) 29.0
 
March 25, 2020, 8 p.m. N/A N/A N/A 3.0 ppb (3) N/A 1.0 ppb (1) 41.0 ppb (32) N/A N/A 3.2 μg/m3 (13) 32.0