ID: 507

AQSQID: 261470005

Site Name: Port Huron

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

Updated: Aug. 1, 2021, 3:54 a.m.

Location: Port Huron (Dove St), MI

Reporting: True, Located: True

Current AQI: 30.0

Port Huron (Dove St) MI, US: 42.9533, -82.4564

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
July 25, 2021, 2 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 48.0 ppb (45) N/A N/A 11.2 μg/m3 (47) 47.0
 
July 25, 2021, 1 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 54.0 ppb (50) N/A N/A 11.0 μg/m3 (46) 50.0
 
July 25, 2021, midnight N/A N/A N/A N/A N/A 1.0 ppb (2) 52.0 ppb (49) N/A N/A 25.9 μg/m3 (81) 81.0
 
July 24, 2021, 11 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 51.0 ppb (48) N/A N/A 31.3 μg/m3 (92) 92.0
 
July 24, 2021, 10 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 50.0 ppb (47) N/A N/A 31.0 μg/m3 (91) 91.0
 
July 24, 2021, 9 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 53.0 ppb (50) N/A N/A 28.2 μg/m3 (85) 85.0
 
July 24, 2021, 8 p.m. N/A N/A N/A N/A N/A 3.0 ppb (5) 56.0 ppb (55) N/A N/A 28.5 μg/m3 (86) 86.0
 
July 24, 2021, 7 p.m. N/A N/A N/A N/A N/A 6.0 ppb (9) 55.0 ppb (51) N/A N/A 29.0 μg/m3 (87) 87.0
 
July 24, 2021, 6 p.m. N/A N/A N/A N/A N/A 10.0 ppb (15) 54.0 ppb (50) N/A N/A 27.1 μg/m3 (83) 83.0
 
July 24, 2021, 5 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 45.0 ppb (42) N/A N/A 22.9 μg/m3 (74) 74.0
 
July 24, 2021, 4 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 36.0 ppb (34) N/A N/A 20.2 μg/m3 (69) 69.0
 
July 24, 2021, 3 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 35.0 ppb (33) N/A N/A 18.4 μg/m3 (65) 65.0
 
July 24, 2021, 2 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 33.0 ppb (31) N/A N/A 16.3 μg/m3 (60) 60.0
 
July 24, 2021, 1 p.m. N/A N/A N/A N/A N/A 3.0 ppb (5) 36.0 ppb (34) N/A N/A 13.7 μg/m3 (55) 55.0
 
July 24, 2021, noon N/A N/A N/A N/A N/A 5.0 ppb (8) 28.0 ppb (26) N/A N/A 12.3 μg/m3 (52) 52.0
 
July 24, 2021, 11 a.m. N/A N/A N/A N/A N/A 5.0 ppb (8) 30.0 ppb (28) N/A N/A 11.7 μg/m3 (49) 49.0
 
July 24, 2021, 10 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 35.0 ppb (33) N/A N/A 10.2 μg/m3 (43) 43.0
 
July 24, 2021, 9 a.m. N/A N/A N/A N/A N/A 4.0 ppb (6) 34.0 ppb (32) N/A N/A 9.9 μg/m3 (42) 42.0
 
July 24, 2021, 8 a.m. N/A N/A N/A N/A N/A 3.0 ppb (5) 34.0 ppb (32) N/A N/A 9.7 μg/m3 (41) 41.0
 
July 24, 2021, 7 a.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 35.0 ppb (33) N/A N/A 9.6 μg/m3 (40) 40.0
 
July 24, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (38) N/A N/A 9.1 μg/m3 (38) 38.0
 
July 24, 2021, 5 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) N/A N/A N/A 8.3 μg/m3 (35) 35.0
 
July 24, 2021, 4 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 44.0 ppb (41) N/A N/A 7.8 μg/m3 (33) 41.0
 
July 24, 2021, 3 a.m. N/A N/A N/A N/A N/A 5.0 ppb (8) 35.0 ppb (33) N/A N/A 8.3 μg/m3 (35) 35.0
 
July 24, 2021, 2 a.m. N/A N/A N/A N/A N/A 3.0 ppb (5) 35.0 ppb (33) N/A N/A 8.3 μg/m3 (35) 35.0
 
July 24, 2021, 1 a.m. N/A N/A N/A N/A N/A 3.0 ppb (5) 37.0 ppb (35) N/A N/A 8.5 μg/m3 (36) 36.0
 
July 24, 2021, midnight N/A N/A N/A N/A N/A 5.0 ppb (8) 41.0 ppb (38) N/A N/A 9.0 μg/m3 (38) 38.0
 
July 23, 2021, 11 p.m. N/A N/A N/A N/A N/A 10.0 ppb (15) 42.0 ppb (39) N/A N/A 8.0 μg/m3 (34) 39.0
 
July 23, 2021, 10 p.m. N/A N/A N/A N/A N/A 8.0 ppb (12) 46.0 ppb (43) N/A N/A 7.7 μg/m3 (33) 43.0
 
July 23, 2021, 9 p.m. N/A N/A N/A N/A N/A 29.0 ppb (42) 35.0 ppb (33) N/A N/A 7.9 μg/m3 (33) 42.0
 
July 23, 2021, 8 p.m. N/A N/A N/A N/A N/A 13.0 ppb (19) 41.0 ppb (38) N/A N/A 8.6 μg/m3 (36) 38.0
 
July 23, 2021, 7 p.m. N/A N/A N/A N/A N/A 12.0 ppb (18) 40.0 ppb (38) N/A N/A 8.3 μg/m3 (35) 38.0
 
July 23, 2021, 6 p.m. N/A N/A N/A N/A N/A 19.0 ppb (28) 33.0 ppb (31) N/A N/A 8.2 μg/m3 (35) 35.0
 
July 23, 2021, 5 p.m. N/A N/A N/A N/A N/A 12.0 ppb (18) 32.0 ppb (30) N/A N/A 8.5 μg/m3 (36) 36.0
 
July 23, 2021, 4 p.m. N/A N/A N/A N/A N/A 6.0 ppb (9) 35.0 ppb (33) N/A N/A 8.5 μg/m3 (36) 36.0
 
July 23, 2021, 3 p.m. N/A N/A N/A N/A N/A 6.0 ppb (9) 35.0 ppb (33) N/A N/A 8.6 μg/m3 (36) 36.0
 
July 23, 2021, 2 p.m. N/A N/A N/A N/A N/A 15.0 ppb (22) 29.0 ppb (27) N/A N/A 10.2 μg/m3 (43) 43.0
 
July 23, 2021, 1 p.m. N/A N/A N/A N/A N/A 8.0 ppb (12) 29.0 ppb (27) N/A N/A 9.8 μg/m3 (41) 41.0
 
July 23, 2021, noon N/A N/A N/A N/A N/A 7.0 ppb (10) 19.0 ppb (18) N/A N/A 9.7 μg/m3 (41) 41.0
 
July 23, 2021, 11 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 12.0 ppb (12) N/A N/A 9.6 μg/m3 (40) 40.0
 
July 23, 2021, 10 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 4.0 ppb (4) N/A N/A 10.5 μg/m3 (44) 44.0
 
July 23, 2021, 9 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 4.0 ppb (4) N/A N/A 10.8 μg/m3 (46) 46.0
 
July 23, 2021, 8 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 6.0 ppb (6) N/A N/A 10.7 μg/m3 (45) 45.0
 
July 23, 2021, 7 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 9.0 ppb (9) N/A N/A 10.4 μg/m3 (44) 44.0
 
July 23, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 13.0 ppb (13) N/A N/A 10.2 μg/m3 (43) 43.0
 
July 23, 2021, 5 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) N/A N/A N/A 9.9 μg/m3 (42) 42.0
 
July 23, 2021, 4 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 13.0 ppb (13) N/A N/A 10.4 μg/m3 (44) 44.0
 
July 23, 2021, 3 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 22.0 ppb (21) N/A N/A 9.6 μg/m3 (40) 40.0
 
July 23, 2021, 2 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 17.0 ppb (16) N/A N/A 10.4 μg/m3 (44) 44.0
 
July 23, 2021, 1 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 20.0 ppb (19) N/A N/A 8.9 μg/m3 (38) 38.0
 
July 23, 2021, midnight N/A N/A N/A N/A N/A 1.0 ppb (2) 24.0 ppb (23) N/A N/A 8.4 μg/m3 (36) 36.0
 
July 22, 2021, 11 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 27.0 ppb (25) N/A N/A 8.0 μg/m3 (34) 34.0
 
July 22, 2021, 10 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 32.0 ppb (30) N/A N/A 8.4 μg/m3 (36) 36.0
 
July 22, 2021, 9 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 32.0 ppb (30) N/A N/A 8.9 μg/m3 (38) 38.0
 
July 22, 2021, 8 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 33.0 ppb (31) N/A N/A 8.5 μg/m3 (36) 36.0
 
July 22, 2021, 7 p.m. N/A N/A N/A N/A N/A 5.0 ppb (8) 34.0 ppb (32) N/A N/A 8.7 μg/m3 (37) 37.0
 
July 22, 2021, 6 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 33.0 ppb (31) N/A N/A 9.1 μg/m3 (38) 38.0
 
July 22, 2021, 5 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 33.0 ppb (31) N/A N/A 8.8 μg/m3 (37) 37.0
 
July 22, 2021, 4 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 32.0 ppb (30) N/A N/A 8.7 μg/m3 (37) 37.0
 
July 22, 2021, 3 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 32.0 ppb (30) N/A N/A 8.1 μg/m3 (34) 34.0
 
July 22, 2021, 2 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 25.0 ppb (24) N/A N/A 7.6 μg/m3 (32) 32.0
 
July 22, 2021, 1 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 15.0 ppb (14) N/A N/A 6.7 μg/m3 (28) 28.0
 
July 22, 2021, noon N/A N/A N/A N/A N/A 1.0 ppb (2) 6.0 ppb (6) N/A N/A 7.7 μg/m3 (33) 33.0
 
July 22, 2021, 11 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 4.0 ppb (4) N/A N/A 7.2 μg/m3 (31) 31.0
 
July 22, 2021, 10 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 2.0 ppb (2) N/A N/A 6.6 μg/m3 (28) 28.0
 
July 22, 2021, 9 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 4.0 ppb (4) N/A N/A 6.2 μg/m3 (26) 26.0
 
July 22, 2021, 8 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 7.0 ppb (7) N/A N/A 5.9 μg/m3 (25) 25.0
 
July 22, 2021, 7 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 9.0 ppb (9) N/A N/A 5.9 μg/m3 (25) 25.0
 
July 22, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 13.0 ppb (13) N/A N/A 5.9 μg/m3 (25) 25.0
 
July 22, 2021, 5 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) N/A N/A N/A 5.9 μg/m3 (25) 25.0
 
July 22, 2021, 4 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 16.0 ppb (15) N/A N/A 6.3 μg/m3 (27) 27.0
 
July 22, 2021, 3 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 16.0 ppb (15) N/A N/A 5.4 μg/m3 (23) 23.0
 
July 22, 2021, 2 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 16.0 ppb (15) N/A N/A 5.1 μg/m3 (22) 22.0
 
July 22, 2021, 1 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 22.0 ppb (21) N/A N/A 4.9 μg/m3 (21) 21.0
 
July 22, 2021, midnight N/A N/A N/A N/A N/A 1.0 ppb (2) 24.0 ppb (23) N/A N/A 3.6 μg/m3 (16) 23.0
 
July 21, 2021, 11 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 25.0 ppb (24) N/A N/A 3.1 μg/m3 (13) 24.0
 
July 21, 2021, 10 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 25.0 ppb (24) N/A N/A 3.0 μg/m3 (13) 24.0
 
July 21, 2021, 9 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 25.0 ppb (24) N/A N/A 3.1 μg/m3 (13) 24.0
 
July 21, 2021, 8 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 25.0 ppb (24) N/A N/A 3.5 μg/m3 (15) 24.0
 
July 21, 2021, 7 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 25.0 ppb (24) N/A N/A 3.4 μg/m3 (15) 24.0
 
July 21, 2021, 6 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 25.0 ppb (24) N/A N/A 3.9 μg/m3 (17) 24.0
 
July 21, 2021, 5 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 24.0 ppb (23) N/A N/A 3.4 μg/m3 (15) 23.0
 
July 21, 2021, 4 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 23.0 ppb (22) N/A N/A 3.8 μg/m3 (16) 22.0
 
July 21, 2021, 3 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 23.0 ppb (22) N/A N/A 3.7 μg/m3 (16) 22.0
 
July 21, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (22) N/A N/A 5.6 μg/m3 (24) 24.0
 
July 21, 2021, 1 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) N/A N/A N/A 6.8 μg/m3 (29) 29.0
 
July 21, 2021, noon N/A N/A N/A N/A N/A 1.0 ppb (2) 21.0 ppb (20) N/A N/A 7.5 μg/m3 (32) 32.0
 
July 21, 2021, 11 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 21.0 ppb (20) N/A N/A 8.3 μg/m3 (35) 35.0
 
July 21, 2021, 10 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 24.0 ppb (23) N/A N/A 8.7 μg/m3 (37) 37.0
 
July 21, 2021, 9 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 29.0 ppb (27) N/A N/A 8.2 μg/m3 (35) 35.0
 
July 21, 2021, 8 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 33.0 ppb (31) N/A N/A 7.6 μg/m3 (32) 32.0
 
July 21, 2021, 7 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 34.0 ppb (32) N/A N/A 7.4 μg/m3 (31) 32.0
 
July 21, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (34) N/A N/A 7.7 μg/m3 (33) 34.0
 
July 21, 2021, 5 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) N/A N/A N/A 8.4 μg/m3 (36) 36.0
 
July 21, 2021, 4 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 35.0 ppb (33) N/A N/A 9.9 μg/m3 (42) 42.0
 
July 21, 2021, 3 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 30.0 ppb (28) N/A N/A 10.5 μg/m3 (44) 44.0
 
July 21, 2021, 2 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 29.0 ppb (27) N/A N/A 9.2 μg/m3 (39) 39.0
 
July 21, 2021, 1 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 27.0 ppb (25) N/A N/A 10.7 μg/m3 (45) 45.0
 
July 21, 2021, midnight N/A N/A N/A N/A N/A 1.0 ppb (2) 36.0 ppb (34) N/A N/A 15.0 μg/m3 (58) 58.0
 
July 20, 2021, 11 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 42.0 ppb (39) N/A N/A 21.2 μg/m3 (71) 71.0
 
July 20, 2021, 10 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 45.0 ppb (42) N/A N/A 12.7 μg/m3 (53) 53.0
 
July 20, 2021, 9 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 49.0 ppb (46) N/A N/A 14.0 μg/m3 (55) 55.0
 
July 20, 2021, 8 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 53.0 ppb (50) N/A N/A 20.4 μg/m3 (69) 69.0
 
July 20, 2021, 7 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 51.0 ppb (48) N/A N/A 19.4 μg/m3 (67) 67.0
 
July 20, 2021, 6 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 48.0 ppb (45) N/A N/A 18.0 μg/m3 (64) 64.0
 
July 20, 2021, 5 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 46.0 ppb (43) N/A N/A 17.1 μg/m3 (62) 62.0
 
July 20, 2021, 4 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 45.0 ppb (42) N/A N/A 17.9 μg/m3 (64) 64.0
 
July 20, 2021, 3 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 40.0 ppb (38) N/A N/A 18.6 μg/m3 (65) 65.0
 
July 20, 2021, 2 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 33.0 ppb (31) N/A N/A 23.4 μg/m3 (75) 75.0
 
July 20, 2021, 1 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 23.0 ppb (22) N/A N/A 32.0 μg/m3 (93) 93.0
 
July 20, 2021, noon N/A N/A N/A N/A N/A 1.0 ppb (2) 16.0 ppb (15) N/A N/A 41.1 μg/m3 (115) 115.0
 
July 20, 2021, 11 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 12.0 ppb (12) N/A N/A 47.0 μg/m3 (130) 130.0
 
July 20, 2021, 10 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 5.0 ppb (5) N/A N/A 49.5 μg/m3 (136) 136.0
 
July 20, 2021, 9 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 12.0 ppb (12) N/A N/A 48.7 μg/m3 (134) 134.0
 
July 20, 2021, 8 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 10.0 ppb (10) N/A N/A 42.4 μg/m3 (118) 118.0
 
July 20, 2021, 7 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 10.0 ppb (10) N/A N/A 34.3 μg/m3 (98) 98.0
 
July 20, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 6.0 ppb (6) N/A N/A 28.5 μg/m3 (86) 86.0
 
July 20, 2021, 5 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) N/A N/A N/A 28.5 μg/m3 (86) 86.0
 
July 20, 2021, 4 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 7.0 ppb (7) N/A N/A 28.5 μg/m3 (86) 86.0
 
July 20, 2021, 3 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 12.0 ppb (12) N/A N/A 29.5 μg/m3 (88) 88.0
 
July 20, 2021, 2 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 16.0 ppb (15) N/A N/A 31.9 μg/m3 (93) 93.0
 
July 20, 2021, 1 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 31.0 ppb (29) N/A N/A 30.9 μg/m3 (91) 91.0
 
July 20, 2021, midnight N/A N/A N/A N/A N/A 1.0 ppb (2) 38.0 ppb (36) N/A N/A 27.9 μg/m3 (85) 85.0
 
July 19, 2021, 11 p.m. N/A N/A N/A N/A N/A 2.0 ppb (3) 38.0 ppb (36) N/A N/A 25.9 μg/m3 (81) 81.0
 
July 19, 2021, 10 p.m. N/A N/A N/A N/A N/A 4.0 ppb (6) 29.0 ppb (27) N/A N/A 26.0 μg/m3 (81) 81.0
 
July 19, 2021, 9 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 40.0 ppb (38) N/A N/A 25.9 μg/m3 (81) 81.0
 
July 19, 2021, 8 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 42.0 ppb (39) N/A N/A 28.7 μg/m3 (86) 86.0
 
July 19, 2021, 7 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 44.0 ppb (41) N/A N/A 34.7 μg/m3 (99) 99.0
 
July 19, 2021, 6 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 44.0 ppb (41) N/A N/A 35.4 μg/m3 (100) 100.0
 
July 19, 2021, 5 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 42.0 ppb (39) N/A N/A 41.7 μg/m3 (117) 117.0
 
July 19, 2021, 4 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 38.0 ppb (36) N/A N/A 28.9 μg/m3 (87) 87.0
 
July 19, 2021, 3 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 34.0 ppb (32) N/A N/A 20.5 μg/m3 (69) 69.0
 
July 19, 2021, 2 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 28.0 ppb (26) N/A N/A 16.8 μg/m3 (61) 61.0
 
July 19, 2021, 1 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 22.0 ppb (21) N/A N/A 17.7 μg/m3 (63) 63.0
 
July 19, 2021, noon N/A N/A N/A N/A N/A 1.0 ppb (2) 10.0 ppb (10) N/A N/A 20.6 μg/m3 (69) 69.0
 
July 19, 2021, 11 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 5.0 ppb (5) N/A N/A 20.5 μg/m3 (69) 69.0
 
July 19, 2021, 10 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 3.0 ppb (3) N/A N/A 18.8 μg/m3 (66) 66.0
 
July 19, 2021, 9 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 3.0 ppb (3) N/A N/A 18.4 μg/m3 (65) 65.0
 
July 19, 2021, 8 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 2.0 ppb (2) N/A N/A 18.3 μg/m3 (65) 65.0
 
July 19, 2021, 7 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 3.0 ppb (3) N/A N/A 20.0 μg/m3 (68) 68.0
 
July 19, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (3) N/A N/A 20.3 μg/m3 (69) 69.0
 
July 19, 2021, 5 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) N/A N/A N/A 16.8 μg/m3 (61) 61.0
 
July 19, 2021, 4 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 5.0 ppb (5) N/A N/A 16.6 μg/m3 (61) 61.0
 
July 19, 2021, 3 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 8.0 ppb (8) N/A N/A 16.1 μg/m3 (60) 60.0
 
July 19, 2021, 2 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 14.0 ppb (13) N/A N/A 14.6 μg/m3 (57) 57.0
 
July 19, 2021, 1 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 23.0 ppb (22) N/A N/A 14.7 μg/m3 (57) 57.0
 
July 19, 2021, midnight N/A N/A N/A N/A N/A 1.0 ppb (2) 32.0 ppb (30) N/A N/A 14.4 μg/m3 (56) 56.0
 
July 18, 2021, 11 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 36.0 ppb (34) N/A N/A 13.6 μg/m3 (55) 55.0
 
July 18, 2021, 10 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 40.0 ppb (38) N/A N/A 13.7 μg/m3 (55) 55.0
 
July 18, 2021, 9 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 38.0 ppb (36) N/A N/A 13.1 μg/m3 (54) 54.0
 
July 18, 2021, 8 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 39.0 ppb (37) N/A N/A 12.6 μg/m3 (53) 53.0
 
July 18, 2021, 7 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 41.0 ppb (38) N/A N/A 12.8 μg/m3 (53) 53.0
 
July 18, 2021, 6 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 35.0 ppb (33) N/A N/A 13.1 μg/m3 (54) 54.0
 
July 18, 2021, 5 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 32.0 ppb (30) N/A N/A 13.7 μg/m3 (55) 55.0
 
July 18, 2021, 4 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 31.0 ppb (29) N/A N/A 14.0 μg/m3 (55) 55.0
 
July 18, 2021, 3 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 28.0 ppb (26) N/A N/A 13.2 μg/m3 (54) 54.0
 
July 18, 2021, 2 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 24.0 ppb (23) N/A N/A 12.4 μg/m3 (52) 52.0
 
July 18, 2021, 1 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 20.0 ppb (19) N/A N/A 12.0 μg/m3 (50) 50.0
 
July 18, 2021, noon N/A N/A N/A N/A N/A 1.0 ppb (2) 17.0 ppb (16) N/A N/A 11.8 μg/m3 (50) 50.0
 
July 18, 2021, 11 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 10.0 ppb (10) N/A N/A 12.5 μg/m3 (52) 52.0
 
July 18, 2021, 10 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 3.0 ppb (3) N/A N/A 13.5 μg/m3 (54) 54.0
 
July 18, 2021, 9 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 3.0 ppb (3) N/A N/A 13.5 μg/m3 (54) 54.0
 
July 18, 2021, 8 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 6.0 ppb (6) N/A N/A 13.7 μg/m3 (55) 55.0
 
July 18, 2021, 7 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 6.0 ppb (6) N/A N/A 14.9 μg/m3 (57) 57.0
 
July 18, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 8.0 ppb (8) N/A N/A 15.9 μg/m3 (59) 59.0
 
July 18, 2021, 5 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) N/A N/A N/A 14.9 μg/m3 (57) 57.0
 
July 18, 2021, 4 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 13.0 ppb (13) N/A N/A 11.4 μg/m3 (48) 48.0
 
July 18, 2021, 3 a.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 15.0 ppb (14) N/A N/A 11.3 μg/m3 (48) 48.0