ID: 1662

AQSQID: 000020104

Site Name: Charlottetown

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

Updated: April 20, 2021, 10:44 a.m.

Location: Charlottetown (Williams Lane), CC

Reporting: True, Located: True

Current AQI: 28.0

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
April 20, 2021, 9 a.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 3.0 μg/m3 (13) 28.0
 
April 20, 2021, 8 a.m. N/A 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 27.0 ppb (25) N/A N/A 1.0 μg/m3 (5) 25.0
 
April 20, 2021, 7 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 2.0 μg/m3 (9) 25.0
 
April 20, 2021, 6 a.m. N/A 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 27.0 ppb (25) N/A N/A 2.0 μg/m3 (9) 25.0
 
April 20, 2021, 5 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 2.0 μg/m3 (9) 26.0
 
April 20, 2021, 4 a.m. N/A 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 27.0 ppb (25) N/A N/A 3.0 μg/m3 (13) 25.0
 
April 20, 2021, 3 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 4.0 μg/m3 (17) 25.0
 
April 20, 2021, 2 a.m. N/A 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 26.0 ppb (25) N/A N/A 6.0 μg/m3 (25) 25.0
 
April 20, 2021, 1 a.m. N/A 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 26.0 ppb (25) N/A N/A 5.0 μg/m3 (21) 25.0
 
April 20, 2021, midnight N/A 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 27.0 ppb (25) N/A N/A 5.0 μg/m3 (21) 25.0
 
April 19, 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 5.0 μg/m3 (21) 27.0
 
April 19, 2021, 10 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 5.0 μg/m3 (21) 28.0
 
April 19, 2021, 9 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 4.0 μg/m3 (17) 28.0
 
April 19, 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 5.0 μg/m3 (21) 28.0
 
April 19, 2021, 7 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 4.0 μg/m3 (17) 28.0
 
April 19, 2021, 6 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 4.0 μg/m3 (17) 26.0
 
April 19, 2021, 5 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 4.0 μg/m3 (17) 26.0
 
April 19, 2021, 4 p.m. N/A 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 27.0 ppb (25) N/A N/A 4.0 μg/m3 (17) 25.0
 
April 19, 2021, 3 p.m. N/A 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 25.0 ppb (24) N/A N/A 4.0 μg/m3 (17) 24.0
 
April 19, 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 4.0 μg/m3 (17) 21.0
 
April 19, 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 4.0 μg/m3 (17) 22.0
 
April 19, 2021, noon 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 4.0 μg/m3 (17) 25.0
 
April 19, 2021, 11 a.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 3.0 μg/m3 (13) 27.0
 
April 19, 2021, 10 a.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 2.0 μg/m3 (9) 27.0
 
April 19, 2021, 9 a.m. N/A 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 31.0 ppb (29) N/A N/A 3.0 μg/m3 (13) 29.0
 
April 19, 2021, 8 a.m. N/A 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 32.0 ppb (30) N/A N/A 3.0 μg/m3 (13) 30.0
 
April 19, 2021, 7 a.m. N/A 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 32.0 ppb (30) N/A N/A 2.0 μg/m3 (9) 30.0
 
April 19, 2021, 6 a.m. N/A 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 31.0 ppb (29) N/A N/A 3.0 μg/m3 (13) 29.0
 
April 19, 2021, 5 a.m. N/A 0.0 ppb (0) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 32.0 ppb (30) N/A N/A 3.0 μg/m3 (13) 30.0
 
April 19, 2021, 4 a.m. N/A 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 31.0 ppb (29) N/A N/A 3.0 μg/m3 (13) 29.0
 
April 19, 2021, 3 a.m. N/A 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 31.0 ppb (29) N/A N/A 2.0 μg/m3 (9) 29.0
 
April 19, 2021, 2 a.m. N/A 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 31.0 ppb (29) N/A N/A 1.0 μg/m3 (5) 29.0
 
April 19, 2021, 1 a.m. N/A 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 32.0 ppb (30) N/A N/A 1.0 μg/m3 (5) 30.0
 
April 19, 2021, midnight 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 1.0 μg/m3 (5) 31.0
 
April 18, 2021, 11 p.m. N/A 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 32.0 ppb (30) N/A N/A 1.0 μg/m3 (5) 30.0
 
April 18, 2021, 10 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 2.0 μg/m3 (9) 31.0
 
April 18, 2021, 9 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 3.0 μg/m3 (13) 31.0
 
April 18, 2021, 8 p.m. N/A 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 31.0 ppb (29) N/A N/A 3.0 μg/m3 (13) 29.0
 
April 18, 2021, 7 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 4.0 μg/m3 (17) 28.0
 
April 18, 2021, 6 p.m. N/A 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 31.0 ppb (29) N/A N/A 5.0 μg/m3 (21) 29.0
 
April 18, 2021, 5 p.m. N/A 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 31.0 ppb (29) N/A N/A 4.0 μg/m3 (17) 29.0
 
April 18, 2021, 4 p.m. N/A 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 31.0 ppb (29) N/A N/A 4.0 μg/m3 (17) 29.0
 
April 18, 2021, 3 p.m. N/A 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 32.0 ppb (30) N/A N/A 5.0 μg/m3 (21) 30.0
 
April 18, 2021, 2 p.m. N/A 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 31.0 ppb (29) N/A N/A 4.0 μg/m3 (17) 29.0
 
April 18, 2021, 1 p.m. N/A 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 31.0 ppb (29) N/A N/A 5.0 μg/m3 (21) 29.0
 
April 18, 2021, noon N/A 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 31.0 ppb (29) N/A N/A 4.0 μg/m3 (17) 29.0
 
April 18, 2021, 11 a.m. N/A 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 31.0 ppb (29) N/A N/A 3.0 μg/m3 (13) 29.0
 
April 18, 2021, 10 a.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 4.0 μg/m3 (17) 29.0
 
April 18, 2021, 9 a.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 5.0 μg/m3 (21) 29.0
 
April 18, 2021, 8 a.m. N/A 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 31.0 ppb (29) N/A N/A 6.0 μg/m3 (25) 29.0
 
April 18, 2021, 7 a.m. N/A 0.0 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 29.0 ppb (27) N/A N/A 6.0 μg/m3 (25) 27.0
 
April 18, 2021, 6 a.m. N/A 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 31.0 ppb (29) N/A N/A 6.0 μg/m3 (25) 29.0
 
April 18, 2021, 5 a.m. N/A 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 32.0 ppb (30) N/A N/A 5.0 μg/m3 (21) 30.0
 
April 18, 2021, 4 a.m. N/A 0.0 ppb (0) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 30.0 ppb (28) N/A N/A 6.0 μg/m3 (25) 28.0
 
April 18, 2021, 3 a.m. N/A 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 31.0 ppb (29) N/A N/A 6.0 μg/m3 (25) 29.0
 
April 18, 2021, 2 a.m. N/A 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 31.0 ppb (29) N/A N/A 6.0 μg/m3 (25) 29.0
 
April 18, 2021, 1 a.m. N/A 0.0 ppb (0) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 26.0 ppb (25) N/A N/A 5.0 μg/m3 (21) 25.0
 
April 18, 2021, midnight N/A 0.0 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 27.0 ppb (25) N/A N/A 4.0 μg/m3 (17) 25.0
 
April 17, 2021, 11 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 3.0 μg/m3 (13) 28.0
 
April 17, 2021, 10 p.m. N/A 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 31.0 ppb (29) N/A N/A 2.0 μg/m3 (9) 29.0
 
April 17, 2021, 9 p.m. N/A 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 31.0 ppb (29) N/A N/A 2.0 μg/m3 (9) 29.0
 
April 17, 2021, 8 p.m. N/A 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 31.0 ppb (29) N/A N/A 2.0 μg/m3 (9) 29.0
 
April 17, 2021, 7 p.m. N/A 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 31.0 ppb (29) N/A N/A 2.0 μg/m3 (9) 29.0
 
April 17, 2021, 6 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 1.0 μg/m3 (5) 28.0
 
April 17, 2021, 5 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 1.0 μg/m3 (5) 28.0
 
April 17, 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 1.0 μg/m3 (5) 28.0
 
April 17, 2021, 3 p.m. N/A 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 31.0 ppb (29) N/A N/A 1.0 μg/m3 (5) 29.0
 
April 17, 2021, 2 p.m. N/A 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 32.0 ppb (30) N/A N/A 1.0 μg/m3 (5) 30.0
 
April 17, 2021, 1 p.m. N/A 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 32.0 ppb (30) N/A N/A 2.0 μg/m3 (9) 30.0
 
April 17, 2021, noon N/A 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 32.0 ppb (30) N/A N/A 3.0 μg/m3 (13) 30.0
 
April 17, 2021, 11 a.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 3.0 μg/m3 (13) 31.0
 
April 17, 2021, 10 a.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 4.0 μg/m3 (17) 31.0
 
April 17, 2021, 9 a.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 4.0 μg/m3 (17) 31.0
 
April 17, 2021, 8 a.m. N/A 0.0 ppb (0) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 34.0 ppb (32) N/A N/A 5.0 μg/m3 (21) 32.0
 
April 17, 2021, 7 a.m. N/A 0.0 ppb (0) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 34.0 ppb (32) N/A N/A 5.0 μg/m3 (21) 32.0
 
April 17, 2021, 6 a.m. N/A 0.0 ppb (0) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 34.0 ppb (32) N/A N/A 5.0 μg/m3 (21) 32.0
 
April 17, 2021, 5 a.m. N/A 0.0 ppb (0) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 33.0 ppb (31) N/A N/A 6.0 μg/m3 (25) 31.0
 
April 17, 2021, 4 a.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 6.0 μg/m3 (25) 31.0
 
April 17, 2021, 3 a.m. N/A 0.0 ppb (0) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 33.0 ppb (31) N/A N/A 5.0 μg/m3 (21) 31.0
 
April 17, 2021, 2 a.m. N/A 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 32.0 ppb (30) N/A N/A 4.0 μg/m3 (17) 30.0
 
April 17, 2021, 1 a.m. N/A 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 32.0 ppb (30) N/A N/A 5.0 μg/m3 (21) 30.0
 
April 17, 2021, midnight N/A 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 32.0 ppb (30) N/A N/A 5.0 μg/m3 (21) 30.0
 
April 16, 2021, 11 p.m. N/A 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 32.0 ppb (30) N/A N/A 6.0 μg/m3 (25) 30.0
 
April 16, 2021, 10 p.m. N/A 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 32.0 ppb (30) N/A N/A 5.0 μg/m3 (21) 30.0
 
April 16, 2021, 9 p.m. N/A 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 32.0 ppb (30) N/A N/A 4.0 μg/m3 (17) 30.0
 
April 16, 2021, 8 p.m. N/A 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 31.0 ppb (29) N/A N/A 4.0 μg/m3 (17) 29.0
 
April 16, 2021, 7 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 3.0 μg/m3 (13) 27.0
 
April 16, 2021, 6 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 3.0 μg/m3 (13) 28.0
 
April 16, 2021, 5 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 3.0 μg/m3 (13) 28.0
 
April 16, 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 3.0 μg/m3 (13) 28.0
 
April 16, 2021, 3 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 3.0 μg/m3 (13) 28.0
 
April 16, 2021, 2 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 4.0 μg/m3 (17) 28.0
 
April 16, 2021, 1 p.m. N/A 1.0 ppb (1) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 27.0 ppb (25) N/A N/A 5.0 μg/m3 (21) 25.0
 
April 16, 2021, noon N/A 1.0 ppb (1) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 27.0 ppb (25) N/A N/A 5.0 μg/m3 (21) 25.0
 
April 16, 2021, 11 a.m. N/A 2.0 ppb (2) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 17.0 ppb (16) N/A N/A 5.0 μg/m3 (21) 21.0
 
April 16, 2021, 10 a.m. N/A 3.0 ppb (3) N/A 13.0 ppb (13) N/A 0.0 ppb (0) 10.0 ppb (10) N/A N/A 8.0 μg/m3 (34) 34.0
 
April 16, 2021, 9 a.m. N/A 1.0 ppb (1) N/A 13.0 ppb (13) N/A 0.0 ppb (0) 7.0 ppb (7) N/A N/A 7.0 μg/m3 (30) 30.0
 
April 16, 2021, 8 a.m. N/A 3.0 ppb (3) N/A 17.0 ppb (17) N/A 0.0 ppb (0) 5.0 ppb (5) N/A N/A 6.0 μg/m3 (25) 25.0
 
April 16, 2021, 7 a.m. N/A 0.0 ppb (0) N/A 10.0 ppb (10) N/A 0.0 ppb (0) 11.0 ppb (11) N/A N/A 6.0 μg/m3 (25) 25.0
 
April 16, 2021, 6 a.m. N/A 0.0 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 21.0 ppb (20) N/A N/A 6.0 μg/m3 (25) 25.0
 
April 16, 2021, 5 a.m. N/A 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 24.0 ppb (23) N/A N/A 6.0 μg/m3 (25) 25.0
 
April 16, 2021, 4 a.m. N/A 0.0 ppb (0) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 21.0 ppb (20) N/A N/A 6.0 μg/m3 (25) 25.0
 
April 16, 2021, 3 a.m. N/A 0.0 ppb (0) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 24.0 ppb (23) N/A N/A 7.0 μg/m3 (30) 30.0
 
April 16, 2021, 2 a.m. N/A 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 27.0 ppb (25) N/A N/A 6.0 μg/m3 (25) 25.0
 
April 16, 2021, 1 a.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 5.0 μg/m3 (21) 27.0
 
April 16, 2021, midnight 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 5.0 μg/m3 (21) 27.0
 
April 15, 2021, 11 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 5.0 μg/m3 (21) 28.0
 
April 15, 2021, 10 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 4.0 μg/m3 (17) 29.0
 
April 15, 2021, 9 p.m. N/A 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 31.0 ppb (29) N/A N/A 4.0 μg/m3 (17) 29.0
 
April 15, 2021, 8 p.m. N/A 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 31.0 ppb (29) N/A N/A 5.0 μg/m3 (21) 29.0
 
April 15, 2021, 7 p.m. N/A 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 32.0 ppb (30) N/A N/A 6.0 μg/m3 (25) 30.0
 
April 15, 2021, 6 p.m. N/A 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 32.0 ppb (30) N/A N/A 6.0 μg/m3 (25) 30.0
 
April 15, 2021, 5 p.m. N/A 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 31.0 ppb (29) N/A N/A 6.0 μg/m3 (25) 29.0
 
April 15, 2021, 4 p.m. N/A 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 31.0 ppb (29) N/A N/A 7.0 μg/m3 (30) 30.0
 
April 15, 2021, 3 p.m. N/A 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 31.0 ppb (29) N/A N/A 7.0 μg/m3 (30) 30.0
 
April 15, 2021, 2 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 7.0 μg/m3 (30) 30.0
 
April 15, 2021, 1 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 7.0 μg/m3 (30) 30.0
 
April 15, 2021, noon 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 8.0 μg/m3 (34) 34.0
 
April 15, 2021, 11 a.m. N/A 1.0 ppb (1) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 24.0 ppb (23) N/A N/A 9.0 μg/m3 (38) 38.0
 
April 15, 2021, 10 a.m. N/A 2.0 ppb (2) N/A 10.0 ppb (10) N/A 0.0 ppb (0) 18.0 ppb (17) N/A N/A 9.0 μg/m3 (38) 38.0
 
April 15, 2021, 9 a.m. N/A 0.0 ppb (0) N/A 8.0 ppb (8) N/A 0.0 ppb (0) 19.0 ppb (18) N/A N/A 8.0 μg/m3 (34) 34.0
 
April 15, 2021, 8 a.m. N/A 0.0 ppb (0) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 23.0 ppb (22) N/A N/A 8.0 μg/m3 (34) 34.0
 
April 15, 2021, 7 a.m. N/A 0.0 ppb (0) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 24.0 ppb (23) N/A N/A 9.0 μg/m3 (38) 38.0
 
April 15, 2021, 6 a.m. N/A 0.0 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 26.0 ppb (25) N/A N/A 10.0 μg/m3 (42) 42.0
 
April 15, 2021, 5 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 N/A 26.0
 
April 15, 2021, 4 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 11.0 μg/m3 (46) 46.0
 
April 15, 2021, 3 a.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 11.0 μg/m3 (46) 46.0
 
April 15, 2021, 2 a.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 11.0 μg/m3 (46) 46.0
 
April 15, 2021, 1 a.m. N/A 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 31.0 ppb (29) N/A N/A 12.0 μg/m3 (50) 50.0
 
April 15, 2021, midnight 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 13.0 μg/m3 (53) 53.0
 
April 14, 2021, 11 p.m. N/A 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 32.0 ppb (30) N/A N/A 13.0 μg/m3 (53) 53.0
 
April 14, 2021, 10 p.m. N/A 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) N/A N/A N/A 13.0 μg/m3 (53) 53.0
 
April 14, 2021, 9 p.m. N/A 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) N/A N/A N/A 11.0 μg/m3 (46) 46.0
 
April 14, 2021, 8 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 10.0 μg/m3 (42) 42.0
 
April 14, 2021, 7 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 11.0 μg/m3 (46) 46.0
 
April 14, 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 11.0 μg/m3 (46) 46.0
 
April 14, 2021, 5 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 10.0 μg/m3 (42) 42.0
 
April 14, 2021, 4 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 9.0 μg/m3 (38) 38.0
 
April 14, 2021, 3 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 9.0 μg/m3 (38) 38.0
 
April 14, 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 9.0 μg/m3 (38) 38.0
 
April 14, 2021, 1 p.m. N/A 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 32.0 ppb (30) N/A N/A 9.0 μg/m3 (38) 38.0
 
April 14, 2021, noon N/A 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 32.0 ppb (30) N/A N/A 8.0 μg/m3 (34) 34.0
 
April 14, 2021, 11 a.m. N/A 1.0 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 30.0 ppb (28) N/A N/A 8.0 μg/m3 (34) 34.0
 
April 14, 2021, 10 a.m. N/A 0.0 ppb (0) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 29.0 ppb (27) N/A N/A 9.0 μg/m3 (38) 38.0
 
April 14, 2021, 9 a.m. N/A 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 32.0 ppb (30) N/A N/A 9.0 μg/m3 (38) 38.0
 
April 14, 2021, 8 a.m. N/A 0.0 ppb (0) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 31.0 ppb (29) N/A N/A 8.0 μg/m3 (34) 34.0
 
April 14, 2021, 7 a.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 9.0 μg/m3 (38) 38.0
 
April 14, 2021, 6 a.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 10.0 μg/m3 (42) 42.0
 
April 14, 2021, 5 a.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 11.0 μg/m3 (46) 46.0
 
April 14, 2021, 4 a.m. N/A 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 32.0 ppb (30) N/A N/A 14.0 μg/m3 (55) 55.0
 
April 14, 2021, 3 a.m. N/A 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 32.0 ppb (30) N/A N/A 16.0 μg/m3 (60) 60.0
 
April 14, 2021, 2 a.m. N/A 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 32.0 ppb (30) N/A N/A 17.0 μg/m3 (62) 62.0
 
April 14, 2021, 1 a.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 18.0 μg/m3 (64) 64.0
 
April 14, 2021, midnight 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 17.0 μg/m3 (62) 62.0
 
April 13, 2021, 11 p.m. N/A 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 34.0 ppb (32) N/A N/A 15.0 μg/m3 (58) 58.0
 
April 13, 2021, 10 p.m. N/A 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 34.0 ppb (32) N/A N/A 14.0 μg/m3 (55) 55.0
 
April 13, 2021, 9 p.m. N/A 0.0 ppb (0) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 35.0 ppb (33) N/A N/A 14.0 μg/m3 (55) 55.0
 
April 13, 2021, 8 p.m. N/A 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 35.0 ppb (33) N/A N/A 13.0 μg/m3 (53) 53.0
 
April 13, 2021, 7 p.m. N/A 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 35.0 ppb (33) N/A N/A 14.0 μg/m3 (55) 55.0
 
April 13, 2021, 6 p.m. N/A 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 35.0 ppb (33) N/A N/A 16.0 μg/m3 (60) 60.0
 
April 13, 2021, 5 p.m. N/A 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 34.0 ppb (32) N/A N/A 17.0 μg/m3 (62) 62.0
 
April 13, 2021, 4 p.m. N/A 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 34.0 ppb (32) N/A N/A 17.0 μg/m3 (62) 62.0
 
April 13, 2021, 3 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 15.0 μg/m3 (58) 58.0
 
April 13, 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 14.0 μg/m3 (55) 55.0
 
April 13, 2021, 1 p.m. N/A 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 32.0 ppb (30) N/A N/A 15.0 μg/m3 (58) 58.0
 
April 13, 2021, noon N/A 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 32.0 ppb (30) N/A N/A 15.0 μg/m3 (58) 58.0
 
April 13, 2021, 11 a.m. N/A 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 32.0 ppb (30) N/A N/A 16.0 μg/m3 (60) 60.0
 
April 13, 2021, 10 a.m. N/A 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 32.0 ppb (30) N/A N/A N/A 30.0