ID: 58

AQSQID: 000061302

Site Name: St. Catharines

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

Updated: April 11, 2021, 3:43 a.m.

Location: Saint Catharines (Downtown), CC

Reporting: True, Located: True

Current AQI: 60.0

Saint Catharines (Downtown) CC, CA: 43.1583, -79.235

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
April 11, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (20) N/A N/A 16.0 μg/m3 (60) 60.0
 
April 11, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (25) N/A N/A 20.0 μg/m3 (68) 68.0
 
April 11, 2021, midnight N/A N/A N/A N/A N/A N/A 28.0 ppb (26) N/A N/A 27.0 μg/m3 (83) 83.0
 
April 10, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (30) N/A N/A 27.0 μg/m3 (83) 83.0
 
April 10, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (31) N/A N/A 23.0 μg/m3 (74) 74.0
 
April 10, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (31) N/A N/A 13.0 μg/m3 (53) 53.0
 
April 10, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (36) N/A N/A 6.0 μg/m3 (25) 36.0
 
April 10, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (37) N/A N/A 5.0 μg/m3 (21) 37.0
 
April 10, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (35) N/A N/A 5.0 μg/m3 (21) 35.0
 
April 10, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (33) N/A N/A 6.0 μg/m3 (25) 33.0
 
April 10, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (32) N/A N/A 7.0 μg/m3 (30) 32.0
 
April 10, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (31) N/A N/A 5.0 μg/m3 (21) 31.0
 
April 10, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (26) N/A N/A 4.0 μg/m3 (17) 26.0
 
April 10, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (19) N/A N/A 4.0 μg/m3 (17) 19.0
 
April 10, 2021, noon N/A N/A N/A N/A N/A N/A 16.0 ppb (15) N/A N/A 6.0 μg/m3 (25) 25.0
 
April 10, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 13.0 ppb (13) N/A N/A 7.0 μg/m3 (30) 30.0
 
April 10, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (19) N/A N/A 8.0 μg/m3 (34) 34.0
 
April 10, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (23) N/A N/A 7.0 μg/m3 (30) 30.0
 
April 10, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (28) N/A N/A 7.0 μg/m3 (30) 30.0
 
April 10, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (28) N/A N/A 7.0 μg/m3 (30) 30.0
 
April 10, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (28) N/A N/A 7.0 μg/m3 (30) 30.0
 
April 10, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (31) N/A N/A 7.0 μg/m3 (30) 31.0
 
April 10, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (32) N/A N/A 8.0 μg/m3 (34) 34.0
 
April 10, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (32) N/A N/A 7.0 μg/m3 (30) 32.0
 
April 10, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (30) N/A N/A 6.0 μg/m3 (25) 30.0
 
April 10, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (32) N/A N/A 6.0 μg/m3 (25) 32.0
 
April 10, 2021, midnight N/A N/A N/A N/A N/A N/A 40.0 ppb (38) N/A N/A 7.0 μg/m3 (30) 38.0
 
April 9, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (42) N/A N/A 6.0 μg/m3 (25) 42.0
 
April 9, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (46) N/A N/A 5.0 μg/m3 (21) 46.0
 
April 9, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (45) N/A N/A 4.0 μg/m3 (17) 45.0
 
April 9, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (44) N/A N/A 4.0 μg/m3 (17) 44.0
 
April 9, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (43) N/A N/A 4.0 μg/m3 (17) 43.0
 
April 9, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (42) N/A N/A 3.0 μg/m3 (13) 42.0
 
April 9, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (40) N/A N/A 3.0 μg/m3 (13) 40.0
 
April 9, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (36) N/A N/A 4.0 μg/m3 (17) 36.0
 
April 9, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (35) N/A N/A 4.0 μg/m3 (17) 35.0
 
April 9, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (36) N/A N/A 4.0 μg/m3 (17) 36.0
 
April 9, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (34) N/A N/A 4.0 μg/m3 (17) 34.0
 
April 9, 2021, noon N/A N/A N/A N/A N/A N/A 36.0 ppb (34) N/A N/A 4.0 μg/m3 (17) 34.0
 
April 9, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (30) N/A N/A 3.0 μg/m3 (13) 30.0
 
April 9, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (32) N/A N/A 3.0 μg/m3 (13) 32.0
 
April 9, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (38) N/A N/A 4.0 μg/m3 (17) 38.0
 
April 9, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (41) N/A N/A 5.0 μg/m3 (21) 41.0
 
April 9, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (41) N/A N/A 5.0 μg/m3 (21) 41.0
 
April 9, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (37) N/A N/A 8.0 μg/m3 (34) 37.0
 
April 9, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (39) N/A N/A 6.0 μg/m3 (25) 39.0
 
April 9, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (46) N/A N/A 6.0 μg/m3 (25) 46.0
 
April 9, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 55.0 ppb (51) N/A N/A 6.0 μg/m3 (25) 51.0
 
April 9, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (45) N/A N/A 10.0 μg/m3 (42) 45.0
 
April 9, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (31) N/A N/A 12.0 μg/m3 (50) 50.0
 
April 9, 2021, midnight N/A N/A N/A N/A N/A N/A 37.0 ppb (35) N/A N/A 12.0 μg/m3 (50) 50.0
 
April 8, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (38) N/A N/A 13.0 μg/m3 (53) 53.0
 
April 8, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (40) N/A N/A 10.0 μg/m3 (42) 42.0
 
April 8, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (40) N/A N/A 8.0 μg/m3 (34) 40.0
 
April 8, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (38) N/A N/A 8.0 μg/m3 (34) 38.0
 
April 8, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (35) N/A N/A 6.0 μg/m3 (25) 35.0
 
April 8, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (37) N/A N/A 7.0 μg/m3 (30) 37.0
 
April 8, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (33) N/A N/A 7.0 μg/m3 (30) 33.0
 
April 8, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (33) N/A N/A 7.0 μg/m3 (30) 33.0
 
April 8, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (31) N/A N/A 6.0 μg/m3 (25) 31.0
 
April 8, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (27) N/A N/A 5.0 μg/m3 (21) 27.0
 
April 8, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 18.0 ppb (17) N/A N/A 6.0 μg/m3 (25) 25.0
 
April 8, 2021, noon N/A N/A N/A N/A N/A N/A 17.0 ppb (16) N/A N/A 6.0 μg/m3 (25) 25.0
 
April 8, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 8.0 ppb (8) N/A N/A 10.0 μg/m3 (42) 42.0
 
April 8, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 4.0 ppb (4) N/A N/A 7.0 μg/m3 (30) 30.0
 
April 8, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 9.0 ppb (9) N/A N/A 10.0 μg/m3 (42) 42.0
 
April 8, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 6.0 ppb (6) N/A N/A 12.0 μg/m3 (50) 50.0
 
April 8, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 9.0 ppb (9) N/A N/A 10.0 μg/m3 (42) 42.0
 
April 8, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 9.0 ppb (9) N/A N/A 9.0 μg/m3 (38) 38.0
 
April 8, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 14.0 ppb (13) N/A N/A 9.0 μg/m3 (38) 38.0
 
April 8, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 14.0 ppb (13) N/A N/A 9.0 μg/m3 (38) 38.0
 
April 8, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 19.0 ppb (18) N/A N/A 7.0 μg/m3 (30) 30.0
 
April 8, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (25) N/A N/A 7.0 μg/m3 (30) 30.0
 
April 8, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (30) N/A N/A 6.0 μg/m3 (25) 30.0
 
April 8, 2021, midnight N/A N/A N/A N/A N/A N/A 34.0 ppb (32) N/A N/A 6.0 μg/m3 (25) 32.0
 
April 7, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (34) N/A N/A 6.0 μg/m3 (25) 34.0
 
April 7, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (38) N/A N/A 5.0 μg/m3 (21) 38.0
 
April 7, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (42) N/A N/A 4.0 μg/m3 (17) 42.0
 
April 7, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (41) N/A N/A 4.0 μg/m3 (17) 41.0
 
April 7, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (41) N/A N/A 4.0 μg/m3 (17) 41.0
 
April 7, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (38) N/A N/A 5.0 μg/m3 (21) 38.0
 
April 7, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (39) N/A N/A 4.0 μg/m3 (17) 39.0
 
April 7, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (37) N/A N/A 5.0 μg/m3 (21) 37.0
 
April 7, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (38) N/A N/A 5.0 μg/m3 (21) 38.0
 
April 7, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (37) N/A N/A 4.0 μg/m3 (17) 37.0
 
April 7, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (33) N/A N/A 6.0 μg/m3 (25) 33.0
 
April 7, 2021, noon N/A N/A N/A N/A N/A N/A 28.0 ppb (26) N/A N/A 8.0 μg/m3 (34) 34.0
 
April 7, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 17.0 ppb (16) N/A N/A 9.0 μg/m3 (38) 38.0
 
April 7, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (25) N/A N/A 7.0 μg/m3 (30) 30.0
 
April 7, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (28) N/A N/A 8.0 μg/m3 (34) 34.0
 
April 7, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (34) N/A N/A 6.0 μg/m3 (25) 34.0
 
April 7, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (37) N/A N/A 6.0 μg/m3 (25) 37.0
 
April 7, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (31) N/A N/A 8.0 μg/m3 (34) 34.0
 
April 7, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (31) N/A N/A 9.0 μg/m3 (38) 38.0
 
April 7, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (35) N/A N/A 6.0 μg/m3 (25) 35.0
 
April 7, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (39) N/A N/A 6.0 μg/m3 (25) 39.0
 
April 7, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (37) N/A N/A 8.0 μg/m3 (34) 37.0
 
April 7, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (38) N/A N/A 7.0 μg/m3 (30) 38.0
 
April 7, 2021, midnight N/A N/A N/A N/A N/A N/A 40.0 ppb (38) N/A N/A 7.0 μg/m3 (30) 38.0
 
April 6, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (35) N/A N/A 7.0 μg/m3 (30) 35.0
 
April 6, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (40) N/A N/A 6.0 μg/m3 (25) 40.0
 
April 6, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (41) N/A N/A 6.0 μg/m3 (25) 41.0
 
April 6, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (42) N/A N/A 6.0 μg/m3 (25) 42.0
 
April 6, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (41) N/A N/A 5.0 μg/m3 (21) 41.0
 
April 6, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (40) N/A N/A 6.0 μg/m3 (25) 40.0
 
April 6, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (38) N/A N/A 6.0 μg/m3 (25) 38.0
 
April 6, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (38) N/A N/A 6.0 μg/m3 (25) 38.0
 
April 6, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (38) N/A N/A 5.0 μg/m3 (21) 38.0
 
April 6, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (37) N/A N/A 5.0 μg/m3 (21) 37.0
 
April 6, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (28) N/A N/A 7.0 μg/m3 (30) 30.0
 
April 6, 2021, noon N/A N/A N/A N/A N/A N/A 9.0 ppb (9) N/A N/A 24.0 μg/m3 (77) 77.0
 
April 6, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A 23.0 μg/m3 (74) 74.0
 
April 6, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 2.0 ppb (2) N/A N/A 32.0 μg/m3 (93) 93.0
 
April 6, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A 18.0 μg/m3 (64) 64.0
 
April 6, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 2.0 ppb (2) N/A N/A N/A 2.0
 
April 6, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 2.0 ppb (2) N/A N/A 19.0 μg/m3 (66) 66.0
 
April 6, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A 19.0 μg/m3 (66) 66.0
 
April 6, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 6.0 ppb (6) N/A N/A 19.0 μg/m3 (66) 66.0
 
April 6, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (3) N/A N/A 24.0 μg/m3 (77) 77.0
 
April 6, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (3) N/A N/A 26.0 μg/m3 (81) 81.0
 
April 6, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 7.0 ppb (7) N/A N/A 26.0 μg/m3 (81) 81.0
 
April 6, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 16.0 ppb (15) N/A N/A 25.0 μg/m3 (79) 79.0
 
April 6, 2021, midnight N/A N/A N/A N/A N/A N/A 29.0 ppb (27) N/A N/A 19.0 μg/m3 (66) 66.0
 
April 5, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (34) N/A N/A 15.0 μg/m3 (58) 58.0
 
April 5, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (32) N/A N/A 15.0 μg/m3 (58) 58.0
 
April 5, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (33) N/A N/A 16.0 μg/m3 (60) 60.0
 
April 5, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (38) N/A N/A 12.0 μg/m3 (50) 50.0
 
April 5, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (41) N/A N/A 10.0 μg/m3 (42) 42.0
 
April 5, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (41) N/A N/A 10.0 μg/m3 (42) 42.0
 
April 5, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (39) N/A N/A 9.0 μg/m3 (38) 39.0
 
April 5, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (35) N/A N/A 10.0 μg/m3 (42) 42.0
 
April 5, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (31) N/A N/A 10.0 μg/m3 (42) 42.0
 
April 5, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (30) N/A N/A 10.0 μg/m3 (42) 42.0
 
April 5, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (22) N/A N/A 12.0 μg/m3 (50) 50.0
 
April 5, 2021, noon N/A N/A N/A N/A N/A N/A 11.0 ppb (11) N/A N/A 16.0 μg/m3 (60) 60.0
 
April 5, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 2.0 ppb (2) N/A N/A 20.0 μg/m3 (68) 68.0
 
April 5, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A 18.0 μg/m3 (64) 64.0
 
April 5, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (3) N/A N/A 20.0 μg/m3 (68) 68.0
 
April 5, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 18.0 μg/m3 (64) 64.0
 
April 5, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 13.0 ppb (13) N/A N/A 17.0 μg/m3 (62) 62.0
 
April 5, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 18.0 ppb (17) N/A N/A 17.0 μg/m3 (62) 62.0
 
April 5, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (20) N/A N/A 19.0 μg/m3 (66) 66.0
 
April 5, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (25) N/A N/A 17.0 μg/m3 (62) 62.0
 
April 5, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (36) N/A N/A 15.0 μg/m3 (58) 58.0
 
April 5, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (43) N/A N/A 14.0 μg/m3 (55) 55.0
 
April 5, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 50.0 ppb (47) N/A N/A 14.0 μg/m3 (55) 55.0
 
April 5, 2021, midnight N/A N/A N/A N/A N/A N/A 51.0 ppb (48) N/A N/A 16.0 μg/m3 (60) 60.0
 
April 4, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 55.0 ppb (51) N/A N/A 12.0 μg/m3 (50) 51.0
 
April 4, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 60.0 ppb (68) N/A N/A 9.0 μg/m3 (38) 68.0
 
April 4, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 59.0 ppb (65) N/A N/A 8.0 μg/m3 (34) 65.0
 
April 4, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 59.0 ppb (65) N/A N/A 9.0 μg/m3 (38) 65.0
 
April 4, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 56.0 ppb (55) N/A N/A 9.0 μg/m3 (38) 55.0
 
April 4, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 51.0 ppb (48) N/A N/A 9.0 μg/m3 (38) 48.0
 
April 4, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (44) N/A N/A 9.0 μg/m3 (38) 44.0
 
April 4, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (38) N/A N/A 11.0 μg/m3 (46) 46.0
 
April 4, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (33) N/A N/A 11.0 μg/m3 (46) 46.0
 
April 4, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (26) N/A N/A 16.0 μg/m3 (60) 60.0
 
April 4, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (23) N/A N/A 22.0 μg/m3 (72) 72.0
 
April 4, 2021, noon N/A N/A N/A N/A N/A N/A 30.0 ppb (28) N/A N/A 20.0 μg/m3 (68) 68.0
 
April 4, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (31) N/A N/A 16.0 μg/m3 (60) 60.0
 
April 4, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (20) N/A N/A 21.0 μg/m3 (70) 70.0
 
April 4, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (19) N/A N/A 23.0 μg/m3 (74) 74.0
 
April 4, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 15.0 ppb (14) N/A N/A 22.0 μg/m3 (72) 72.0
 
April 4, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 18.0 ppb (17) N/A N/A 17.0 μg/m3 (62) 62.0
 
April 4, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (22) N/A N/A 13.0 μg/m3 (53) 53.0
 
April 4, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (30) N/A N/A 12.0 μg/m3 (50) 50.0
 
April 4, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (34) N/A N/A 7.0 μg/m3 (30) 34.0
 
April 4, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (37) N/A N/A 7.0 μg/m3 (30) 37.0