AQSQID: 000091101

Site Name: Elk Island

Location: Fort Saskatchewan (Range Rd 202A), CC

Reporting: True, Located: True

Current AQI: 23.0

Fort Saskatchewan (Range Rd 202A) CC, CA: 53.6825, -112.8686

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
May 20, 2019, noon N/A N/A N/A N/A N/A N/A 30.0 ppb (23) N/A N/A 3.2 μg/m3 (13) 23.0
 
May 20, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) N/A N/A 3.6 μg/m3 (15) 24.0
 
May 20, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) N/A N/A 4.3 μg/m3 (18) 25.0
 
May 20, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 5.0 μg/m3 (21) 21.0
 
May 20, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (30) N/A N/A 4.7 μg/m3 (20) 30.0
 
May 20, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (32) N/A N/A 5.4 μg/m3 (23) 32.0
 
May 20, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (32) N/A N/A 5.5 μg/m3 (23) 32.0
 
May 20, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (33) N/A N/A 6.5 μg/m3 (27) 33.0
 
May 20, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (34) N/A N/A 6.5 μg/m3 (27) 34.0
 
May 20, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (35) N/A N/A 6.7 μg/m3 (28) 35.0
 
May 20, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 50.0 ppb (38) N/A N/A 6.1 μg/m3 (25) 38.0
 
May 20, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 51.0 ppb (39) N/A N/A 6.0 μg/m3 (25) 39.0
 
May 20, 2019, midnight N/A N/A N/A N/A N/A N/A 51.0 ppb (39) N/A N/A 5.8 μg/m3 (24) 39.0
 
May 19, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 51.0 ppb (39) N/A N/A 6.6 μg/m3 (28) 39.0
 
May 19, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 50.0 ppb (38) N/A N/A 5.0 μg/m3 (21) 38.0
 
May 19, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (38) N/A N/A 5.4 μg/m3 (23) 38.0
 
May 19, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (37) N/A N/A 5.9 μg/m3 (25) 37.0
 
May 19, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (36) N/A N/A 4.5 μg/m3 (19) 36.0
 
May 19, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (35) N/A N/A 3.1 μg/m3 (13) 35.0
 
May 19, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (35) N/A N/A 2.1 μg/m3 (9) 35.0
 
May 19, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (32) N/A N/A 1.6 μg/m3 (7) 32.0
 
May 19, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A N/A 6.3 μg/m3 (26) 28.0
 
May 19, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (25) N/A N/A 1.0 μg/m3 (4) 25.0
 
May 19, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (22) N/A N/A 1.9 μg/m3 (8) 22.0
 
May 19, 2019, noon N/A N/A N/A N/A N/A N/A 26.0 ppb (20) N/A N/A 2.0 μg/m3 (8) 20.0
 
May 19, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (22) N/A N/A 2.4 μg/m3 (10) 22.0
 
May 19, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) N/A N/A 3.4 μg/m3 (14) 23.0
 
May 19, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 4.7 μg/m3 (20) 20.0
 
May 19, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) N/A N/A 7.6 μg/m3 (32) 32.0
 
May 19, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) N/A N/A 4.8 μg/m3 (20) 28.0
 
May 19, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) N/A N/A 4.3 μg/m3 (18) 27.0
 
May 19, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) N/A N/A 4.2 μg/m3 (18) 27.0
 
May 19, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (29) N/A N/A 4.4 μg/m3 (18) 29.0
 
May 19, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (32) N/A N/A 3.8 μg/m3 (16) 32.0
 
May 19, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (34) N/A N/A 4.0 μg/m3 (17) 34.0
 
May 19, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (35) N/A N/A 3.8 μg/m3 (16) 35.0
 
May 19, 2019, midnight N/A N/A N/A N/A N/A N/A 46.0 ppb (35) N/A N/A 4.6 μg/m3 (19) 35.0
 
May 18, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (36) N/A N/A 4.5 μg/m3 (19) 36.0
 
May 18, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (37) N/A N/A 4.7 μg/m3 (20) 37.0
 
May 18, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (37) N/A N/A 4.7 μg/m3 (20) 37.0
 
May 18, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (36) N/A N/A 4.5 μg/m3 (19) 36.0
 
May 18, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (35) N/A N/A 4.4 μg/m3 (18) 35.0
 
May 18, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (33) N/A N/A 4.4 μg/m3 (18) 33.0
 
May 18, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (30) N/A N/A 6.1 μg/m3 (25) 30.0
 
May 18, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A N/A 8.3 μg/m3 (35) 35.0
 
May 18, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) N/A N/A 7.9 μg/m3 (33) 33.0
 
May 18, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (22) N/A N/A 6.1 μg/m3 (25) 25.0
 
May 18, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (20) N/A N/A 7.7 μg/m3 (32) 32.0
 
May 18, 2019, noon N/A N/A N/A N/A N/A N/A 26.0 ppb (20) N/A N/A 6.3 μg/m3 (26) 26.0
 
May 18, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (21) N/A N/A 7.1 μg/m3 (30) 30.0
 
May 18, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (22) N/A N/A 5.8 μg/m3 (24) 24.0
 
May 18, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 5.2 μg/m3 (22) 22.0
 
May 18, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) N/A N/A 4.4 μg/m3 (18) 26.0
 
May 18, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (29) N/A N/A 3.9 μg/m3 (16) 29.0
 
May 18, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (31) N/A N/A 4.0 μg/m3 (17) 31.0
 
May 18, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (33) N/A N/A 4.2 μg/m3 (18) 33.0
 
May 18, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (35) N/A N/A 4.8 μg/m3 (20) 35.0
 
May 18, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (37) N/A N/A 5.5 μg/m3 (23) 37.0
 
May 18, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 52.0 ppb (40) N/A N/A 5.8 μg/m3 (24) 40.0
 
May 18, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 52.0 ppb (40) N/A N/A 5.0 μg/m3 (21) 40.0
 
May 18, 2019, midnight N/A N/A N/A N/A N/A N/A 53.0 ppb (41) N/A N/A 4.1 μg/m3 (17) 41.0
 
May 17, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 53.0 ppb (41) N/A N/A 3.9 μg/m3 (16) 41.0
 
May 17, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 53.0 ppb (41) N/A N/A 3.7 μg/m3 (15) 41.0
 
May 17, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 51.0 ppb (39) N/A N/A 3.3 μg/m3 (14) 39.0
 
May 17, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (38) N/A N/A 2.6 μg/m3 (11) 38.0
 
May 17, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (36) N/A N/A 2.1 μg/m3 (9) 36.0
 
May 17, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (35) N/A N/A 3.2 μg/m3 (13) 35.0
 
May 17, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (35) N/A N/A 3.4 μg/m3 (14) 35.0
 
May 17, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (33) N/A N/A 3.1 μg/m3 (13) 33.0
 
May 17, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (31) N/A N/A 3.5 μg/m3 (15) 31.0
 
May 17, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A N/A 3.9 μg/m3 (16) 28.0
 
May 17, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) N/A N/A 3.7 μg/m3 (15) 25.0
 
May 17, 2019, noon N/A N/A N/A N/A N/A N/A 33.0 ppb (25) N/A N/A 3.5 μg/m3 (15) 25.0
 
May 17, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) N/A N/A 3.8 μg/m3 (16) 25.0
 
May 17, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) N/A N/A 3.9 μg/m3 (16) 26.0
 
May 17, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 3.7 μg/m3 (15) 15.0
 
May 17, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) N/A N/A 3.4 μg/m3 (14) 28.0
 
May 17, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (30) N/A N/A 4.0 μg/m3 (17) 30.0
 
May 17, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (31) N/A N/A 3.3 μg/m3 (14) 31.0
 
May 17, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (31) N/A N/A 2.9 μg/m3 (12) 31.0
 
May 17, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (30) N/A N/A 2.9 μg/m3 (12) 30.0
 
May 17, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (32) N/A N/A 2.9 μg/m3 (12) 32.0
 
May 17, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (34) N/A N/A 2.6 μg/m3 (11) 34.0
 
May 17, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (35) N/A N/A 2.7 μg/m3 (11) 35.0
 
May 17, 2019, midnight N/A N/A N/A N/A N/A N/A 47.0 ppb (36) N/A N/A 2.2 μg/m3 (9) 36.0
 
May 16, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (36) N/A N/A 2.7 μg/m3 (11) 36.0
 
May 16, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (35) N/A N/A 2.0 μg/m3 (8) 35.0
 
May 16, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (35) N/A N/A 1.9 μg/m3 (8) 35.0
 
May 16, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (35) N/A N/A 2.0 μg/m3 (8) 35.0
 
May 16, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (34) N/A N/A 2.0 μg/m3 (8) 34.0
 
May 16, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (31) N/A N/A 2.0 μg/m3 (8) 31.0
 
May 16, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A N/A 1.9 μg/m3 (8) 28.0
 
May 16, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) N/A N/A 2.1 μg/m3 (9) 25.0
 
May 16, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (25) N/A N/A 3.0 μg/m3 (12) 25.0
 
May 16, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) N/A N/A 1.8 μg/m3 (8) 23.0
 
May 16, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) N/A N/A 1.8 μg/m3 (8) 23.0
 
May 16, 2019, noon N/A N/A N/A N/A N/A N/A 31.0 ppb (24) N/A N/A 2.4 μg/m3 (10) 24.0
 
May 16, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) N/A N/A 3.3 μg/m3 (14) 24.0
 
May 16, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (22) N/A N/A 2.9 μg/m3 (12) 22.0
 
May 16, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 2.9 μg/m3 (12) 12.0
 
May 16, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (18) N/A N/A 3.3 μg/m3 (14) 18.0
 
May 16, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 16.0 ppb (12) N/A N/A 4.6 μg/m3 (19) 19.0
 
May 16, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (16) N/A N/A 3.9 μg/m3 (16) 16.0
 
May 16, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 16.0 ppb (12) N/A N/A 3.2 μg/m3 (13) 13.0
 
May 16, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (17) N/A N/A 2.5 μg/m3 (10) 17.0
 
May 16, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (20) N/A N/A 2.3 μg/m3 (10) 20.0
 
May 16, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) N/A N/A 2.3 μg/m3 (10) 26.0
 
May 16, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) N/A N/A 2.2 μg/m3 (9) 28.0
 
May 16, 2019, midnight N/A N/A N/A N/A N/A N/A 35.0 ppb (27) N/A N/A 2.9 μg/m3 (12) 27.0
 
May 15, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) N/A N/A 2.6 μg/m3 (11) 26.0
 
May 15, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) N/A N/A 1.9 μg/m3 (8) 27.0
 
May 15, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) N/A N/A N/A 26.0
 
May 15, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) N/A N/A N/A 26.0
 
May 15, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) N/A N/A N/A 25.0
 
May 15, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (25) N/A N/A N/A 25.0
 
May 15, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (25) N/A N/A N/A 25.0
 
May 15, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (34) N/A N/A 4.0 μg/m3 (17) 34.0
 
May 15, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (37) N/A N/A 3.8 μg/m3 (16) 37.0
 
May 15, 2019, midnight N/A N/A N/A N/A N/A N/A N/A N/A N/A 4.0 μg/m3 (17) 17.0
 
May 14, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 4.4 μg/m3 (18) 18.0
 
May 14, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 4.3 μg/m3 (18) 18.0
 
May 14, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (35) N/A N/A N/A 35.0
 
May 14, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (33) N/A N/A N/A 33.0
 
May 14, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (32) N/A N/A N/A 32.0
 
May 14, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) N/A N/A N/A 26.0
 
May 14, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) N/A N/A N/A 26.0
 
May 14, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) N/A N/A N/A 26.0
 
May 14, 2019, noon N/A N/A N/A N/A N/A N/A 33.0 ppb (25) N/A N/A N/A 25.0
 
May 14, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) N/A N/A N/A 26.0
 
May 14, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) N/A N/A N/A 25.0
 
May 14, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) N/A N/A N/A 28.0
 
May 14, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A N/A N/A 28.0
 
May 14, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) N/A N/A N/A 27.0
 
May 14, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (29) N/A N/A N/A 29.0
 
May 14, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (32) N/A N/A N/A 32.0
 
May 14, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (33) N/A N/A N/A 33.0
 
May 14, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (35) N/A N/A N/A 35.0
 
May 14, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (38) N/A N/A N/A 38.0
 
May 14, 2019, midnight N/A N/A N/A N/A N/A N/A 51.0 ppb (39) N/A N/A N/A 39.0
 
May 13, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 54.0 ppb (42) N/A N/A N/A 42.0
 
May 13, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 55.0 ppb (42) N/A N/A N/A 42.0
 
May 13, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 54.0 ppb (42) N/A N/A N/A 42.0
 
May 13, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 53.0 ppb (41) N/A N/A N/A 41.0
 
May 13, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 52.0 ppb (40) N/A N/A N/A 40.0
 
May 13, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 51.0 ppb (39) N/A N/A N/A 39.0
 
May 13, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 50.0 ppb (38) N/A N/A N/A 38.0
 
May 13, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (37) N/A N/A N/A 37.0
 
May 13, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (35) N/A N/A N/A 35.0
 
May 13, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (35) N/A N/A N/A 35.0
 
May 13, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (37) N/A N/A N/A 37.0
 
May 13, 2019, noon N/A N/A N/A N/A N/A N/A 47.0 ppb (36) N/A N/A N/A 36.0
 
May 13, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (36) N/A N/A N/A 36.0
 
May 13, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (36) N/A N/A N/A 36.0
 
May 13, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 50.0 ppb (38) N/A N/A N/A 38.0
 
May 13, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (38) N/A N/A N/A 38.0
 
May 13, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 51.0 ppb (39) N/A N/A 10.6 μg/m3 (44) 44.0
 
May 13, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (38) N/A N/A 12.7 μg/m3 (51) 51.0
 
May 13, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 50.0 ppb (38) N/A N/A 13.0 μg/m3 (52) 52.0
 
May 13, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 52.0 ppb (40) N/A N/A 12.6 μg/m3 (51) 51.0
 
May 13, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 55.0 ppb (42) N/A N/A 10.8 μg/m3 (45) 45.0
 
May 13, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 67.0 ppb (52) N/A N/A 6.4 μg/m3 (27) 52.0
 
May 13, 2019, midnight N/A N/A N/A N/A N/A N/A 72.0 ppb (56) N/A N/A 5.1 μg/m3 (21) 56.0
 
May 12, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 76.0 ppb (59) N/A N/A 4.5 μg/m3 (19) 59.0
 
May 12, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 73.0 ppb (57) N/A N/A 5.0 μg/m3 (21) 57.0
 
May 12, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 68.0 ppb (52) N/A N/A 5.0 μg/m3 (21) 52.0
 
May 12, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 62.0 ppb (48) N/A N/A 4.7 μg/m3 (20) 48.0
 
May 12, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 61.0 ppb (47) N/A N/A 4.2 μg/m3 (18) 47.0
 
May 12, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 60.0 ppb (46) N/A N/A 3.8 μg/m3 (16) 46.0