ID: 1662

AQSQID: 000020104

Site Name: Charlottetown

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

Updated: July 28, 2021, 8:53 p.m.

Location: Charlottetown (Williams Lane), CC

Reporting: True, Located: True

Current AQI: 17.0

Charlottetown (Williams Lane) CC, CA: 46.2406, -63.1306

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
July 28, 2021, 7 p.m. N/A 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 17.0 ppb (16) N/A N/A 4.0 μg/m3 (17) 17.0
 
July 28, 2021, 6 p.m. N/A 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 17.0 ppb (16) N/A N/A 4.0 μg/m3 (17) 17.0
 
July 28, 2021, 5 p.m. N/A 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 17.0 ppb (16) N/A N/A 3.0 μg/m3 (13) 16.0
 
July 28, 2021, 4 p.m. N/A 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 20.0 ppb (19) N/A N/A 3.0 μg/m3 (13) 19.0
 
July 28, 2021, 3 p.m. N/A 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 18.0 ppb (17) N/A N/A 3.0 μg/m3 (13) 17.0
 
July 28, 2021, 2 p.m. N/A 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 16.0 ppb (15) N/A N/A 3.0 μg/m3 (13) 15.0
 
July 28, 2021, 1 p.m. N/A 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 14.0 ppb (13) N/A N/A 3.0 μg/m3 (13) 13.0
 
July 28, 2021, noon N/A 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 13.0 ppb (13) N/A N/A 3.0 μg/m3 (13) 13.0
 
July 28, 2021, 11 a.m. N/A 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 12.0 ppb (12) N/A N/A 3.0 μg/m3 (13) 13.0
 
July 28, 2021, 10 a.m. N/A 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 12.0 ppb (12) N/A N/A 4.0 μg/m3 (17) 17.0
 
July 28, 2021, 9 a.m. N/A 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 15.0 ppb (14) N/A N/A 6.0 μg/m3 (25) 25.0
 
July 28, 2021, 8 a.m. N/A 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 16.0 ppb (15) N/A N/A 11.0 μg/m3 (46) 46.0
 
July 28, 2021, 7 a.m. N/A 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 16.0 ppb (15) N/A N/A 13.0 μg/m3 (53) 53.0
 
July 28, 2021, 6 a.m. N/A 0.0 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 18.0 ppb (17) N/A N/A 12.0 μg/m3 (50) 50.0
 
July 28, 2021, 5 a.m. N/A 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 22.0 ppb (21) N/A N/A 12.0 μg/m3 (50) 50.0
 
July 28, 2021, 4 a.m. N/A 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 26.0 ppb (25) N/A N/A 12.0 μg/m3 (50) 50.0
 
July 28, 2021, 3 a.m. N/A 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 28.0 ppb (26) N/A N/A 13.0 μg/m3 (53) 53.0
 
July 28, 2021, 2 a.m. N/A 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 24.0 ppb (23) N/A N/A 30.0 μg/m3 (89) 89.0
 
July 28, 2021, 1 a.m. N/A 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 23.0 ppb (22) N/A N/A 33.0 μg/m3 (95) 95.0
 
July 28, 2021, midnight N/A 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 28.0 ppb (26) N/A N/A 35.0 μg/m3 (100) 100.0
 
July 27, 2021, 11 p.m. N/A 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 29.0 ppb (27) N/A N/A 33.0 μg/m3 (95) 95.0
 
July 27, 2021, 10 p.m. N/A 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 30.0 ppb (28) N/A N/A 33.0 μg/m3 (95) 95.0
 
July 27, 2021, 9 p.m. N/A 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 29.0 ppb (27) N/A N/A 34.0 μg/m3 (98) 98.0
 
July 27, 2021, 8 p.m. N/A 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 30.0 ppb (28) N/A N/A 32.0 μg/m3 (93) 93.0
 
July 27, 2021, 7 p.m. N/A 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 31.0 ppb (29) N/A N/A 32.0 μg/m3 (93) 93.0
 
July 27, 2021, 6 p.m. N/A 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 33.0 ppb (31) N/A N/A 31.0 μg/m3 (91) 91.0
 
July 27, 2021, 5 p.m. N/A 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 37.0 ppb (35) N/A N/A 38.0 μg/m3 (108) 108.0
 
July 27, 2021, 4 p.m. N/A 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 30.0 ppb (28) N/A N/A 27.0 μg/m3 (83) 83.0
 
July 27, 2021, 3 p.m. N/A 0.0 ppb (0) N/A 0.0 ppb (0) N/A N/A 27.0 ppb (25) N/A N/A 25.0 μg/m3 (79) 79.0
 
July 27, 2021, 2 p.m. N/A 0.0 ppb (0) N/A 0.0 ppb (0) N/A N/A 29.0 ppb (27) N/A N/A 22.0 μg/m3 (72) 72.0
 
July 27, 2021, 1 p.m. N/A 0.0 ppb (0) N/A 0.0 ppb (0) N/A N/A 30.0 ppb (28) N/A N/A 19.0 μg/m3 (66) 66.0
 
July 27, 2021, noon N/A 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 33.0 ppb (31) N/A N/A 19.0 μg/m3 (66) 66.0
 
July 27, 2021, 11 a.m. N/A 0.0 ppb (0) N/A 0.0 ppb (0) N/A N/A 32.0 ppb (30) N/A N/A 15.0 μg/m3 (58) 58.0
 
July 27, 2021, 10 a.m. N/A 0.0 ppb (0) N/A 0.0 ppb (0) N/A N/A 32.0 ppb (30) N/A N/A 13.0 μg/m3 (53) 53.0
 
July 27, 2021, 9 a.m. N/A 0.0 ppb (0) N/A 0.0 ppb (0) N/A N/A 31.0 ppb (29) N/A N/A 13.0 μg/m3 (53) 53.0
 
July 27, 2021, 8 a.m. N/A 0.0 ppb (0) N/A 0.0 ppb (0) N/A N/A 34.0 ppb (32) N/A N/A 14.0 μg/m3 (55) 55.0
 
July 27, 2021, 7 a.m. N/A 0.0 ppb (0) N/A 0.0 ppb (0) N/A N/A 35.0 ppb (33) N/A N/A 14.0 μg/m3 (55) 55.0
 
July 27, 2021, 6 a.m. N/A 0.0 ppb (0) N/A 0.0 ppb (0) N/A N/A 34.0 ppb (32) N/A N/A 13.0 μg/m3 (53) 53.0
 
July 27, 2021, 5 a.m. N/A 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 20.0 ppb (19) N/A N/A 4.0 μg/m3 (17) 19.0
 
July 27, 2021, 4 a.m. N/A 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 25.0 ppb (24) N/A N/A 4.0 μg/m3 (17) 24.0
 
July 27, 2021, 3 a.m. N/A 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 26.0 ppb (25) N/A N/A 5.0 μg/m3 (21) 25.0
 
July 27, 2021, 2 a.m. N/A 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 25.0 ppb (24) N/A N/A 5.0 μg/m3 (21) 24.0
 
July 27, 2021, 1 a.m. N/A 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 28.0 ppb (26) N/A N/A 6.0 μg/m3 (25) 26.0
 
July 27, 2021, midnight N/A 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 29.0 ppb (27) N/A N/A 6.0 μg/m3 (25) 27.0
 
July 26, 2021, 11 p.m. N/A 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 32.0 ppb (30) N/A N/A 5.0 μg/m3 (21) 30.0
 
July 26, 2021, 10 p.m. N/A 0.0 ppb (0) N/A 0.0 ppb (0) N/A N/A 33.0 ppb (31) N/A N/A 5.0 μg/m3 (21) 31.0
 
July 26, 2021, 9 p.m. N/A 0.0 ppb (0) N/A 0.0 ppb (0) N/A N/A 34.0 ppb (32) N/A N/A 5.0 μg/m3 (21) 32.0
 
July 26, 2021, 8 p.m. N/A 0.0 ppb (0) N/A 0.0 ppb (0) N/A N/A 33.0 ppb (31) N/A N/A 5.0 μg/m3 (21) 31.0
 
July 26, 2021, 7 p.m. N/A 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 32.0 ppb (30) N/A N/A 5.0 μg/m3 (21) 30.0
 
July 26, 2021, 6 p.m. N/A 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 32.0 ppb (30) N/A N/A 5.0 μg/m3 (21) 30.0
 
July 26, 2021, 5 p.m. N/A 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 31.0 ppb (29) N/A N/A 5.0 μg/m3 (21) 29.0
 
July 26, 2021, 4 p.m. N/A 0.0 ppb (0) N/A 0.0 ppb (0) N/A N/A 30.0 ppb (28) N/A N/A 4.0 μg/m3 (17) 28.0
 
July 26, 2021, 3 p.m. N/A 0.0 ppb (0) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 30.0 ppb (28) N/A N/A 4.0 μg/m3 (17) 28.0
 
July 26, 2021, 2 p.m. N/A 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 33.0 ppb (31) N/A N/A 5.0 μg/m3 (21) 31.0
 
July 26, 2021, 1 p.m. N/A 0.0 ppb (0) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 27.0 ppb (25) N/A N/A 4.0 μg/m3 (17) 25.0
 
July 26, 2021, noon N/A 0.0 ppb (0) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 27.0 ppb (25) N/A N/A 5.0 μg/m3 (21) 25.0
 
July 26, 2021, 11 a.m. N/A 0.0 ppb (0) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 22.0 ppb (21) N/A N/A 7.0 μg/m3 (30) 30.0
 
July 26, 2021, 10 a.m. N/A 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 23.0 ppb (22) N/A N/A 7.0 μg/m3 (30) 30.0
 
July 26, 2021, 9 a.m. N/A 0.0 ppb (0) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 25.0 ppb (24) N/A N/A 7.0 μg/m3 (30) 30.0
 
July 26, 2021, 8 a.m. N/A 0.0 ppb (0) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 26.0 ppb (25) N/A N/A 7.0 μg/m3 (30) 30.0
 
July 26, 2021, 7 a.m. N/A 0.0 ppb (0) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 25.0 ppb (24) N/A N/A 7.0 μg/m3 (30) 30.0
 
July 26, 2021, 6 a.m. N/A 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 23.0 ppb (22) N/A N/A 7.0 μg/m3 (30) 30.0
 
July 26, 2021, 5 a.m. N/A 0.0 ppb (0) N/A 0.0 ppb (0) N/A 1.0 ppb (2) 24.0 ppb (23) N/A N/A 7.0 μg/m3 (30) 30.0
 
July 26, 2021, 4 a.m. N/A 0.0 ppb (0) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 24.0 ppb (23) N/A N/A 6.0 μg/m3 (25) 25.0
 
July 26, 2021, 3 a.m. N/A 0.0 ppb (0) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 25.0 ppb (24) N/A N/A 6.0 μg/m3 (25) 25.0
 
July 26, 2021, 2 a.m. N/A 0.0 ppb (0) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 23.0 ppb (22) N/A N/A 6.0 μg/m3 (25) 25.0
 
July 26, 2021, 1 a.m. N/A 0.0 ppb (0) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 20.0 ppb (19) N/A N/A 7.0 μg/m3 (30) 30.0
 
July 26, 2021, midnight N/A 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 22.0 ppb (21) N/A N/A 6.0 μg/m3 (25) 25.0
 
July 25, 2021, 11 p.m. N/A 0.0 ppb (0) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 23.0 ppb (22) N/A N/A 6.0 μg/m3 (25) 25.0
 
July 25, 2021, 10 p.m. N/A 2.0 ppb (2) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 17.0 ppb (16) N/A N/A 7.0 μg/m3 (30) 30.0
 
July 25, 2021, 9 p.m. N/A 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 21.0 ppb (20) N/A N/A 6.0 μg/m3 (25) 25.0
 
July 25, 2021, 8 p.m. N/A 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 19.0 ppb (18) N/A N/A 6.0 μg/m3 (25) 25.0
 
July 25, 2021, 7 p.m. N/A 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 20.0 ppb (19) N/A N/A 6.0 μg/m3 (25) 25.0
 
July 25, 2021, 6 p.m. N/A 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 18.0 ppb (17) N/A N/A 6.0 μg/m3 (25) 25.0
 
July 25, 2021, 5 p.m. N/A 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 17.0 ppb (16) N/A N/A 6.0 μg/m3 (25) 25.0
 
July 25, 2021, 4 p.m. N/A 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 15.0 ppb (14) N/A N/A 6.0 μg/m3 (25) 25.0
 
July 25, 2021, 3 p.m. N/A 0.0 ppb (0) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 14.0 ppb (13) N/A N/A 6.0 μg/m3 (25) 25.0
 
July 25, 2021, 2 p.m. N/A 0.0 ppb (0) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 15.0 ppb (14) N/A N/A 6.0 μg/m3 (25) 25.0
 
July 25, 2021, 1 p.m. N/A 0.0 ppb (0) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 20.0 ppb (19) N/A N/A 6.0 μg/m3 (25) 25.0
 
July 25, 2021, noon N/A 0.0 ppb (0) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 20.0 ppb (19) N/A N/A 6.0 μg/m3 (25) 25.0
 
July 25, 2021, 11 a.m. N/A 0.0 ppb (0) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 20.0 ppb (19) N/A N/A 6.0 μg/m3 (25) 25.0
 
July 25, 2021, 10 a.m. N/A 0.0 ppb (0) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 19.0 ppb (18) N/A N/A 5.0 μg/m3 (21) 21.0
 
July 25, 2021, 9 a.m. N/A 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 14.0 ppb (13) N/A N/A 5.0 μg/m3 (21) 21.0
 
July 25, 2021, 8 a.m. N/A 0.0 ppb (0) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 7.0 ppb (7) N/A N/A 4.0 μg/m3 (17) 17.0
 
July 25, 2021, 7 a.m. N/A 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 10.0 ppb (10) N/A N/A 4.0 μg/m3 (17) 17.0
 
July 25, 2021, 6 a.m. N/A 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 14.0 ppb (13) N/A N/A 4.0 μg/m3 (17) 17.0
 
July 25, 2021, 5 a.m. N/A 0.0 ppb (0) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 17.0 ppb (16) N/A N/A 4.0 μg/m3 (17) 17.0
 
July 25, 2021, 4 a.m. N/A 0.0 ppb (0) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 18.0 ppb (17) N/A N/A 4.0 μg/m3 (17) 17.0
 
July 25, 2021, 3 a.m. N/A 0.0 ppb (0) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 19.0 ppb (18) N/A N/A 4.0 μg/m3 (17) 18.0
 
July 25, 2021, 2 a.m. N/A 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 17.0 ppb (16) N/A N/A 4.0 μg/m3 (17) 17.0
 
July 25, 2021, 1 a.m. N/A 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 16.0 ppb (15) N/A N/A 5.0 μg/m3 (21) 21.0
 
July 25, 2021, midnight N/A 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 21.0 ppb (20) N/A N/A 5.0 μg/m3 (21) 21.0
 
July 24, 2021, 11 p.m. N/A 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 20.0 ppb (19) N/A N/A 5.0 μg/m3 (21) 21.0
 
July 24, 2021, 10 p.m. N/A 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 20.0 ppb (19) N/A N/A 4.0 μg/m3 (17) 19.0
 
July 24, 2021, 9 p.m. N/A 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 21.0 ppb (20) N/A N/A 5.0 μg/m3 (21) 21.0
 
July 24, 2021, 8 p.m. N/A 0.0 ppb (0) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 20.0 ppb (19) N/A N/A 4.0 μg/m3 (17) 19.0
 
July 24, 2021, 7 p.m. N/A 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 19.0 ppb (18) N/A N/A 4.0 μg/m3 (17) 18.0
 
July 24, 2021, 6 p.m. N/A 0.0 ppb (0) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 20.0 ppb (19) N/A N/A 4.0 μg/m3 (17) 19.0
 
July 24, 2021, 5 p.m. N/A 0.0 ppb (0) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 19.0 ppb (18) N/A N/A 5.0 μg/m3 (21) 21.0
 
July 24, 2021, 4 p.m. N/A 0.0 ppb (0) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 18.0 ppb (17) N/A N/A 4.0 μg/m3 (17) 17.0
 
July 24, 2021, 3 p.m. N/A 0.0 ppb (0) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 18.0 ppb (17) N/A N/A 4.0 μg/m3 (17) 17.0
 
July 24, 2021, 2 p.m. N/A 0.0 ppb (0) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 18.0 ppb (17) N/A N/A 4.0 μg/m3 (17) 17.0
 
July 24, 2021, 1 p.m. N/A 0.0 ppb (0) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 14.0 ppb (13) N/A N/A 4.0 μg/m3 (17) 17.0
 
July 24, 2021, noon N/A 0.0 ppb (0) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 13.0 ppb (13) N/A N/A 4.0 μg/m3 (17) 17.0
 
July 24, 2021, 11 a.m. N/A 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 12.0 ppb (12) N/A N/A 4.0 μg/m3 (17) 17.0
 
July 24, 2021, 10 a.m. N/A 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 12.0 ppb (12) N/A N/A 4.0 μg/m3 (17) 17.0
 
July 24, 2021, 9 a.m. N/A 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 9.0 ppb (9) N/A N/A 4.0 μg/m3 (17) 17.0
 
July 24, 2021, 8 a.m. N/A 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 10.0 ppb (10) N/A N/A 4.0 μg/m3 (17) 17.0
 
July 24, 2021, 7 a.m. N/A 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 12.0 ppb (12) N/A N/A 4.0 μg/m3 (17) 17.0
 
July 24, 2021, 6 a.m. N/A 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 13.0 ppb (13) N/A N/A 4.0 μg/m3 (17) 17.0
 
July 24, 2021, 5 a.m. N/A 0.0 ppb (0) N/A 2.0 ppb (2) N/A 1.0 ppb (2) 14.0 ppb (13) N/A N/A 4.0 μg/m3 (17) 17.0
 
July 24, 2021, 4 a.m. N/A 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 15.0 ppb (14) N/A N/A 5.0 μg/m3 (21) 21.0
 
July 24, 2021, 3 a.m. N/A 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 15.0 ppb (14) N/A N/A 6.0 μg/m3 (25) 25.0
 
July 24, 2021, 2 a.m. N/A 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 15.0 ppb (14) N/A N/A 5.0 μg/m3 (21) 21.0
 
July 24, 2021, 1 a.m. N/A 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 14.0 ppb (13) N/A N/A 5.0 μg/m3 (21) 21.0
 
July 24, 2021, midnight N/A 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 18.0 ppb (17) N/A N/A 5.0 μg/m3 (21) 21.0
 
July 23, 2021, 11 p.m. N/A 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 21.0 ppb (20) N/A N/A 5.0 μg/m3 (21) 21.0
 
July 23, 2021, 10 p.m. N/A 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 21.0 ppb (20) N/A N/A 5.0 μg/m3 (21) 21.0
 
July 23, 2021, 9 p.m. N/A 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 19.0 ppb (18) N/A N/A 6.0 μg/m3 (25) 25.0
 
July 23, 2021, 8 p.m. N/A 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 16.0 ppb (15) N/A N/A 7.0 μg/m3 (30) 30.0
 
July 23, 2021, 7 p.m. N/A 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 18.0 ppb (17) N/A N/A 5.0 μg/m3 (21) 21.0
 
July 23, 2021, 6 p.m. N/A 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 19.0 ppb (18) N/A N/A 5.0 μg/m3 (21) 21.0
 
July 23, 2021, 5 p.m. N/A 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 18.0 ppb (17) N/A N/A 5.0 μg/m3 (21) 21.0
 
July 23, 2021, 4 p.m. N/A 0.0 ppb (0) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 19.0 ppb (18) N/A N/A N/A 18.0
 
July 23, 2021, 3 p.m. N/A 0.0 ppb (0) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 19.0 ppb (18) N/A N/A N/A 18.0
 
July 23, 2021, 2 p.m. N/A 0.0 ppb (0) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 18.0 ppb (17) N/A N/A N/A 17.0
 
July 23, 2021, 1 p.m. N/A 0.0 ppb (0) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 18.0 ppb (17) N/A N/A N/A 17.0
 
July 23, 2021, noon N/A 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 16.0 ppb (15) N/A N/A N/A 15.0
 
July 23, 2021, 11 a.m. N/A 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 13.0 ppb (13) N/A N/A 5.0 μg/m3 (21) 21.0
 
July 23, 2021, 10 a.m. N/A 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 11.0 ppb (11) N/A N/A 5.0 μg/m3 (21) 21.0
 
July 23, 2021, 9 a.m. N/A 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 12.0 ppb (12) N/A N/A 5.0 μg/m3 (21) 21.0
 
July 23, 2021, 8 a.m. N/A 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 15.0 ppb (14) N/A N/A 4.0 μg/m3 (17) 17.0
 
July 23, 2021, 7 a.m. N/A 0.0 ppb (0) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 15.0 ppb (14) N/A N/A 4.0 μg/m3 (17) 17.0
 
July 23, 2021, 6 a.m. N/A 0.0 ppb (0) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 16.0 ppb (15) N/A N/A 4.0 μg/m3 (17) 17.0
 
July 23, 2021, 5 a.m. N/A 0.0 ppb (0) N/A 0.0 ppb (0) N/A 1.0 ppb (2) 18.0 ppb (17) N/A N/A 4.0 μg/m3 (17) 17.0
 
July 23, 2021, 4 a.m. N/A 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 19.0 ppb (18) N/A N/A 5.0 μg/m3 (21) 21.0
 
July 23, 2021, 3 a.m. N/A 0.0 ppb (0) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 21.0 ppb (20) N/A N/A 5.0 μg/m3 (21) 21.0
 
July 23, 2021, 2 a.m. N/A 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 23.0 ppb (22) N/A N/A 5.0 μg/m3 (21) 22.0
 
July 23, 2021, 1 a.m. N/A 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 21.0 ppb (20) N/A N/A 5.0 μg/m3 (21) 21.0
 
July 23, 2021, midnight N/A 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 22.0 ppb (21) N/A N/A 5.0 μg/m3 (21) 21.0
 
July 22, 2021, 11 p.m. N/A 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 23.0 ppb (22) N/A N/A 5.0 μg/m3 (21) 22.0
 
July 22, 2021, 10 p.m. N/A 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 24.0 ppb (23) N/A N/A 5.0 μg/m3 (21) 23.0
 
July 22, 2021, 9 p.m. N/A 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 24.0 ppb (23) N/A N/A 5.0 μg/m3 (21) 23.0
 
July 22, 2021, 8 p.m. N/A 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 28.0 ppb (26) N/A N/A 5.0 μg/m3 (21) 26.0
 
July 22, 2021, 7 p.m. N/A 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 24.0 ppb (23) N/A N/A 4.0 μg/m3 (17) 23.0
 
July 22, 2021, 6 p.m. N/A 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 20.0 ppb (19) N/A N/A 5.0 μg/m3 (21) 21.0
 
July 22, 2021, 5 p.m. N/A 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 18.0 ppb (17) N/A N/A 5.0 μg/m3 (21) 21.0
 
July 22, 2021, 4 p.m. N/A 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 20.0 ppb (19) N/A N/A 5.0 μg/m3 (21) 21.0
 
July 22, 2021, 3 p.m. N/A 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 21.0 ppb (20) N/A N/A 6.0 μg/m3 (25) 25.0
 
July 22, 2021, 2 p.m. N/A 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 22.0 ppb (21) N/A N/A 6.0 μg/m3 (25) 25.0
 
July 22, 2021, 1 p.m. N/A 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 23.0 ppb (22) N/A N/A 6.0 μg/m3 (25) 25.0
 
July 22, 2021, noon N/A 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 23.0 ppb (22) N/A N/A 5.0 μg/m3 (21) 22.0
 
July 22, 2021, 11 a.m. N/A 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 19.0 ppb (18) N/A N/A 4.0 μg/m3 (17) 18.0
 
July 22, 2021, 10 a.m. N/A 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 19.0 ppb (18) N/A N/A 2.0 μg/m3 (9) 18.0
 
July 22, 2021, 9 a.m. N/A 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 18.0 ppb (17) N/A N/A 3.0 μg/m3 (13) 17.0
 
July 22, 2021, 8 a.m. N/A 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 19.0 ppb (18) N/A N/A 3.0 μg/m3 (13) 18.0
 
July 22, 2021, 7 a.m. N/A 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 23.0 ppb (22) N/A N/A 3.0 μg/m3 (13) 22.0
 
July 22, 2021, 6 a.m. N/A 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 21.0 ppb (20) N/A N/A 5.0 μg/m3 (21) 21.0
 
July 22, 2021, 5 a.m. N/A 0.0 ppb (0) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 25.0 ppb (24) N/A N/A 6.0 μg/m3 (25) 25.0
 
July 22, 2021, 4 a.m. N/A 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 24.0 ppb (23) N/A N/A 6.0 μg/m3 (25) 25.0
 
July 22, 2021, 3 a.m. N/A 0.0 ppb (0) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 23.0 ppb (22) N/A N/A 5.0 μg/m3 (21) 22.0
 
July 22, 2021, 2 a.m. N/A 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 23.0 ppb (22) N/A N/A 4.0 μg/m3 (17) 22.0
 
July 22, 2021, 1 a.m. N/A 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 19.0 ppb (18) N/A N/A 5.0 μg/m3 (21) 21.0
 
July 22, 2021, midnight N/A 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 17.0 ppb (16) N/A N/A 7.0 μg/m3 (30) 30.0
 
July 21, 2021, 11 p.m. N/A 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 19.0 ppb (18) N/A N/A 8.0 μg/m3 (34) 34.0
 
July 21, 2021, 10 p.m. N/A 0.0 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 20.0 ppb (19) N/A N/A 8.0 μg/m3 (34) 34.0
 
July 21, 2021, 9 p.m. N/A 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 19.0 ppb (18) N/A N/A 8.0 μg/m3 (34) 34.0
 
July 21, 2021, 8 p.m. N/A 0.0 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 19.0 ppb (18) N/A N/A 8.0 μg/m3 (34) 34.0