AQSQID: 000091701

Site Name: Steeper

Location: Alberta (Yellowhead Co), CC

Reporting: True, Located: True

Current AQI: 40.0

Alberta (Yellowhead Co) CC, CA: 53.1325, -117.09111

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
April 9, 2020, 1 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 52.0 ppb (40) N/A N/A 3.1 μg/m3 (13) 40.0
 
April 9, 2020, 11 a.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 52.0 ppb (40) N/A N/A 3.2 μg/m3 (13) 40.0
 
April 9, 2020, 10 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 3.2 μg/m3 (13) 13.0
 
April 9, 2020, 9 a.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 51.0 ppb (39) N/A N/A 3.8 μg/m3 (16) 39.0
 
April 9, 2020, 8 a.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 52.0 ppb (40) N/A N/A 3.4 μg/m3 (14) 40.0
 
April 9, 2020, 7 a.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 52.0 ppb (40) N/A N/A 2.8 μg/m3 (12) 40.0
 
April 9, 2020, 6 a.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 52.0 ppb (40) N/A N/A 3.0 μg/m3 (12) 40.0
 
April 9, 2020, 5 a.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 53.0 ppb (41) N/A N/A 3.6 μg/m3 (15) 41.0
 
April 9, 2020, 4 a.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 54.0 ppb (42) N/A N/A 4.0 μg/m3 (17) 42.0
 
April 9, 2020, 3 a.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 55.0 ppb (42) N/A N/A 4.4 μg/m3 (18) 42.0
 
April 9, 2020, 1 a.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 56.0 ppb (43) N/A N/A 5.6 μg/m3 (23) 43.0
 
April 9, 2020, midnight N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 56.0 ppb (43) N/A N/A 5.8 μg/m3 (24) 43.0
 
April 8, 2020, 11 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 56.0 ppb (43) N/A N/A 5.7 μg/m3 (24) 43.0
 
April 8, 2020, 10 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 57.0 ppb (44) N/A N/A 6.6 μg/m3 (28) 44.0
 
April 8, 2020, 9 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 57.0 ppb (44) N/A N/A 7.3 μg/m3 (30) 44.0
 
April 8, 2020, 8 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 54.0 ppb (42) N/A N/A 4.1 μg/m3 (17) 42.0
 
April 8, 2020, 7 p.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 51.0 ppb (39) N/A N/A 2.0 μg/m3 (8) 39.0
 
April 8, 2020, 6 p.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 50.0 ppb (38) N/A N/A 1.8 μg/m3 (8) 38.0
 
April 8, 2020, 5 p.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 48.0 ppb (37) N/A N/A 1.7 μg/m3 (7) 37.0
 
April 8, 2020, 4 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 47.0 ppb (36) N/A N/A 2.1 μg/m3 (9) 36.0
 
April 8, 2020, 3 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 46.0 ppb (35) N/A N/A 3.4 μg/m3 (14) 35.0
 
April 8, 2020, 2 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 45.0 ppb (35) N/A N/A 3.4 μg/m3 (14) 35.0
 
April 8, 2020, 1 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 45.0 ppb (35) N/A N/A 3.6 μg/m3 (15) 35.0
 
April 8, 2020, noon N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 45.0 ppb (35) N/A N/A 3.3 μg/m3 (14) 35.0
 
April 8, 2020, 11 a.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 45.0 ppb (35) N/A N/A 3.1 μg/m3 (13) 35.0
 
April 8, 2020, 10 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 3.2 μg/m3 (13) 13.0
 
April 8, 2020, 9 a.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 45.0 ppb (35) N/A N/A 3.4 μg/m3 (14) 35.0
 
April 8, 2020, 8 a.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 48.0 ppb (37) N/A N/A 1.8 μg/m3 (8) 37.0
 
April 8, 2020, 7 a.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 48.0 ppb (37) N/A N/A 1.8 μg/m3 (8) 37.0
 
April 8, 2020, 6 a.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 48.0 ppb (37) N/A N/A 1.9 μg/m3 (8) 37.0
 
April 8, 2020, 5 a.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 48.0 ppb (37) N/A N/A 1.9 μg/m3 (8) 37.0
 
April 8, 2020, 4 a.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 49.0 ppb (38) N/A N/A 2.1 μg/m3 (9) 38.0
 
April 8, 2020, 3 a.m. N/A N/A N/A 1.0 ppb (1) N/A 1.0 ppb (1) 49.0 ppb (38) N/A N/A 2.3 μg/m3 (10) 38.0
 
April 8, 2020, 2 a.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 50.0 ppb (38) N/A N/A 1.7 μg/m3 (7) 38.0
 
April 8, 2020, 1 a.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 51.0 ppb (39) N/A N/A 1.6 μg/m3 (7) 39.0
 
April 8, 2020, midnight N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 51.0 ppb (39) N/A N/A 1.6 μg/m3 (7) 39.0
 
April 7, 2020, 11 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 51.0 ppb (39) N/A N/A 1.7 μg/m3 (7) 39.0
 
April 7, 2020, 10 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 52.0 ppb (40) N/A N/A 1.7 μg/m3 (7) 40.0
 
April 7, 2020, 9 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 53.0 ppb (41) N/A N/A 1.8 μg/m3 (8) 41.0
 
April 7, 2020, 8 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 53.0 ppb (41) N/A N/A 2.1 μg/m3 (9) 41.0
 
April 7, 2020, 7 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 53.0 ppb (41) N/A N/A 2.7 μg/m3 (11) 41.0
 
April 7, 2020, 6 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 53.0 ppb (41) N/A N/A 3.5 μg/m3 (15) 41.0
 
April 7, 2020, 5 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 52.0 ppb (40) N/A N/A 3.9 μg/m3 (16) 40.0
 
April 7, 2020, 4 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 52.0 ppb (40) N/A N/A 3.6 μg/m3 (15) 40.0
 
April 7, 2020, 3 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 52.0 ppb (40) N/A N/A 3.6 μg/m3 (15) 40.0
 
April 7, 2020, 2 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 51.0 ppb (39) N/A N/A 3.8 μg/m3 (16) 39.0
 
April 7, 2020, 1 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 53.0 ppb (41) N/A N/A 4.5 μg/m3 (19) 41.0
 
April 7, 2020, noon N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 54.0 ppb (42) N/A N/A 4.5 μg/m3 (19) 42.0
 
April 7, 2020, 11 a.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 54.0 ppb (42) N/A N/A 4.6 μg/m3 (19) 42.0
 
April 7, 2020, 10 a.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
 
April 7, 2020, 9 a.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 51.0 ppb (39) N/A N/A 3.9 μg/m3 (16) 39.0
 
April 7, 2020, 8 a.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 51.0 ppb (39) N/A N/A 3.9 μg/m3 (16) 39.0
 
April 7, 2020, 7 a.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 51.0 ppb (39) N/A N/A 3.5 μg/m3 (15) 39.0
 
April 7, 2020, 6 a.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 52.0 ppb (40) N/A N/A 2.8 μg/m3 (12) 40.0
 
April 7, 2020, 5 a.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 52.0 ppb (40) N/A N/A 2.3 μg/m3 (10) 40.0
 
April 7, 2020, 4 a.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 53.0 ppb (41) N/A N/A 2.2 μg/m3 (9) 41.0
 
April 7, 2020, 3 a.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 53.0 ppb (41) N/A N/A 1.9 μg/m3 (8) 41.0
 
April 7, 2020, 2 a.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 53.0 ppb (41) N/A N/A 1.7 μg/m3 (7) 41.0
 
April 7, 2020, 1 a.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 52.0 ppb (40) N/A N/A 1.5 μg/m3 (6) 40.0
 
April 7, 2020, midnight N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 51.0 ppb (39) N/A N/A 1.4 μg/m3 (6) 39.0
 
April 6, 2020, 11 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 51.0 ppb (39) N/A N/A 1.4 μg/m3 (6) 39.0
 
April 6, 2020, 10 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 52.0 ppb (40) N/A N/A 1.5 μg/m3 (6) 40.0
 
April 6, 2020, 9 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 52.0 ppb (40) N/A N/A 1.6 μg/m3 (7) 40.0
 
April 6, 2020, 8 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 53.0 ppb (41) N/A N/A 1.9 μg/m3 (8) 41.0
 
April 6, 2020, 7 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 52.0 ppb (40) N/A N/A 1.9 μg/m3 (8) 40.0
 
April 6, 2020, 6 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 50.0 ppb (38) N/A N/A 1.9 μg/m3 (8) 38.0
 
April 6, 2020, 5 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 48.0 ppb (37) N/A N/A 2.5 μg/m3 (10) 37.0
 
April 6, 2020, 4 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 42.0 ppb (32) N/A N/A 4.0 μg/m3 (17) 32.0
 
April 6, 2020, 3 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 41.0 ppb (32) N/A N/A 4.7 μg/m3 (20) 32.0
 
April 6, 2020, 2 p.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 38.0 ppb (29) N/A N/A 5.1 μg/m3 (21) 29.0
 
April 6, 2020, 1 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 35.0 ppb (27) N/A N/A 6.0 μg/m3 (25) 27.0
 
April 6, 2020, noon N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 33.0 ppb (25) N/A N/A 6.3 μg/m3 (26) 26.0
 
April 6, 2020, 11 a.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 33.0 ppb (25) N/A N/A 5.8 μg/m3 (24) 25.0
 
April 6, 2020, 10 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 6.3 μg/m3 (26) 26.0
 
April 6, 2020, 9 a.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 34.0 ppb (26) N/A N/A 6.6 μg/m3 (28) 28.0
 
April 6, 2020, 8 a.m. N/A N/A N/A 5.0 ppb (5) N/A 0.0 ppb (0) 33.0 ppb (25) N/A N/A 7.0 μg/m3 (29) 29.0
 
April 6, 2020, 7 a.m. N/A N/A N/A 5.0 ppb (5) N/A 0.0 ppb (0) 35.0 ppb (27) N/A N/A 6.9 μg/m3 (29) 29.0
 
April 6, 2020, 6 a.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 37.0 ppb (28) N/A N/A 6.5 μg/m3 (27) 28.0
 
April 6, 2020, 5 a.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 39.0 ppb (30) N/A N/A 6.3 μg/m3 (26) 30.0
 
April 6, 2020, 4 a.m. N/A N/A N/A 4.0 ppb (4) N/A 0.0 ppb (0) 39.0 ppb (30) N/A N/A 6.6 μg/m3 (28) 30.0
 
April 6, 2020, 3 a.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 40.0 ppb (31) N/A N/A 7.0 μg/m3 (29) 31.0
 
April 6, 2020, 2 a.m. N/A N/A N/A 4.0 ppb (4) N/A 0.0 ppb (0) 40.0 ppb (31) N/A N/A 7.3 μg/m3 (30) 31.0
 
April 6, 2020, 1 a.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 44.0 ppb (34) N/A N/A 7.4 μg/m3 (31) 34.0
 
April 6, 2020, midnight N/A N/A N/A 3.0 ppb (3) N/A 1.0 ppb (1) 47.0 ppb (36) N/A N/A 6.0 μg/m3 (25) 36.0
 
April 5, 2020, 11 p.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 48.0 ppb (37) N/A N/A 5.1 μg/m3 (21) 37.0
 
April 5, 2020, 10 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 49.0 ppb (38) N/A N/A 4.7 μg/m3 (20) 38.0
 
April 5, 2020, 9 p.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 47.0 ppb (36) N/A N/A 6.1 μg/m3 (25) 36.0
 
April 5, 2020, 8 p.m. N/A N/A N/A 4.0 ppb (4) N/A 0.0 ppb (0) 45.0 ppb (35) N/A N/A 7.3 μg/m3 (30) 35.0
 
April 5, 2020, 7 p.m. N/A N/A N/A 4.0 ppb (4) N/A 1.0 ppb (1) 44.0 ppb (34) N/A N/A 7.5 μg/m3 (31) 34.0
 
April 5, 2020, 6 p.m. N/A N/A N/A 4.0 ppb (4) N/A 1.0 ppb (1) 41.0 ppb (32) N/A N/A 6.8 μg/m3 (28) 32.0
 
April 5, 2020, 5 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 42.0 ppb (32) N/A N/A 5.8 μg/m3 (24) 32.0
 
April 5, 2020, 4 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 42.0 ppb (32) N/A N/A 6.0 μg/m3 (25) 32.0
 
April 5, 2020, 3 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 39.0 ppb (30) N/A N/A 4.4 μg/m3 (18) 30.0
 
April 5, 2020, 2 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 37.0 ppb (28) N/A N/A 3.1 μg/m3 (13) 28.0
 
April 5, 2020, 1 p.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 39.0 ppb (30) N/A N/A 3.7 μg/m3 (15) 30.0
 
April 5, 2020, noon N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 38.0 ppb (29) N/A N/A 3.3 μg/m3 (14) 29.0
 
April 5, 2020, 11 a.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 37.0 ppb (28) N/A N/A 3.0 μg/m3 (12) 28.0
 
April 5, 2020, 10 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 3.5 μg/m3 (15) 15.0
 
April 5, 2020, 9 a.m. N/A N/A N/A 5.0 ppb (5) N/A 1.0 ppb (1) 42.0 ppb (32) N/A N/A 3.9 μg/m3 (16) 32.0
 
April 5, 2020, 8 a.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 43.0 ppb (33) N/A N/A 3.4 μg/m3 (14) 33.0
 
April 5, 2020, 7 a.m. N/A N/A N/A 4.0 ppb (4) N/A 1.0 ppb (1) 43.0 ppb (33) N/A N/A 3.4 μg/m3 (14) 33.0
 
April 5, 2020, 6 a.m. N/A N/A N/A 4.0 ppb (4) N/A 0.0 ppb (0) 44.0 ppb (34) N/A N/A 3.5 μg/m3 (15) 34.0
 
April 5, 2020, 5 a.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 46.0 ppb (35) N/A N/A 3.3 μg/m3 (14) 35.0
 
April 5, 2020, 4 a.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 46.0 ppb (35) N/A N/A 3.0 μg/m3 (12) 35.0
 
April 5, 2020, 3 a.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 44.0 ppb (34) N/A N/A 2.3 μg/m3 (10) 34.0
 
April 5, 2020, 2 a.m. N/A N/A N/A 2.0 ppb (2) N/A 1.0 ppb (1) 44.0 ppb (34) N/A N/A 2.1 μg/m3 (9) 34.0
 
April 5, 2020, 1 a.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 44.0 ppb (34) N/A N/A 2.1 μg/m3 (9) 34.0
 
April 5, 2020, midnight N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 46.0 ppb (35) N/A N/A 2.2 μg/m3 (9) 35.0
 
April 4, 2020, 11 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 47.0 ppb (36) N/A N/A 2.3 μg/m3 (10) 36.0
 
April 4, 2020, 10 p.m. N/A N/A N/A 1.0 ppb (1) N/A 1.0 ppb (1) 46.0 ppb (35) N/A N/A 2.6 μg/m3 (11) 35.0
 
April 4, 2020, 9 p.m. N/A N/A N/A 1.0 ppb (1) N/A 1.0 ppb (1) 45.0 ppb (35) N/A N/A 2.9 μg/m3 (12) 35.0
 
April 4, 2020, 8 p.m. N/A N/A N/A 2.0 ppb (2) N/A 1.0 ppb (1) 42.0 ppb (32) N/A N/A 3.5 μg/m3 (15) 32.0
 
April 4, 2020, 7 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 37.0 ppb (28) N/A N/A 5.3 μg/m3 (22) 28.0
 
April 4, 2020, 6 p.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 35.0 ppb (27) N/A N/A 5.3 μg/m3 (22) 27.0
 
April 4, 2020, 5 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 37.0 ppb (28) N/A N/A 4.7 μg/m3 (20) 28.0
 
April 4, 2020, 4 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 37.0 ppb (28) N/A N/A 4.9 μg/m3 (20) 28.0
 
April 4, 2020, 3 p.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 35.0 ppb (27) N/A N/A 5.1 μg/m3 (21) 27.0
 
April 4, 2020, 2 p.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 34.0 ppb (26) N/A N/A 5.3 μg/m3 (22) 26.0
 
April 4, 2020, 1 p.m. N/A N/A N/A 4.0 ppb (4) N/A 0.0 ppb (0) 33.0 ppb (25) N/A N/A 5.7 μg/m3 (24) 25.0
 
April 4, 2020, 11 a.m. N/A N/A N/A 4.0 ppb (4) N/A 0.0 ppb (0) 33.0 ppb (25) N/A N/A 6.5 μg/m3 (27) 27.0
 
April 4, 2020, 10 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 6.3 μg/m3 (26) 26.0
 
April 4, 2020, 9 a.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 33.0 ppb (25) N/A N/A 5.9 μg/m3 (25) 25.0
 
April 4, 2020, 8 a.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 34.0 ppb (26) N/A N/A 6.1 μg/m3 (25) 26.0
 
April 4, 2020, 7 a.m. N/A N/A N/A 4.0 ppb (4) N/A 0.0 ppb (0) 35.0 ppb (27) N/A N/A 6.9 μg/m3 (29) 29.0
 
April 4, 2020, 6 a.m. N/A N/A N/A 5.0 ppb (5) N/A 1.0 ppb (1) 36.0 ppb (28) N/A N/A 7.8 μg/m3 (32) 32.0
 
April 4, 2020, 5 a.m. N/A N/A N/A 6.0 ppb (6) N/A 1.0 ppb (1) 35.0 ppb (27) N/A N/A 6.7 μg/m3 (28) 28.0
 
April 4, 2020, 4 a.m. N/A N/A N/A 5.0 ppb (5) N/A 0.0 ppb (0) 36.0 ppb (28) N/A N/A 5.7 μg/m3 (24) 28.0
 
April 4, 2020, 3 a.m. N/A N/A N/A 6.0 ppb (6) N/A 0.0 ppb (0) 35.0 ppb (27) N/A N/A 5.5 μg/m3 (23) 27.0
 
April 4, 2020, 2 a.m. N/A N/A N/A 4.0 ppb (4) N/A 0.0 ppb (0) 38.0 ppb (29) N/A N/A 5.1 μg/m3 (21) 29.0
 
April 4, 2020, 1 a.m. N/A N/A N/A 4.0 ppb (4) N/A 1.0 ppb (1) 39.0 ppb (30) N/A N/A 4.3 μg/m3 (18) 30.0
 
April 4, 2020, midnight N/A N/A N/A 3.0 ppb (3) N/A 1.0 ppb (1) 40.0 ppb (31) N/A N/A 3.6 μg/m3 (15) 31.0
 
April 3, 2020, 11 p.m. N/A N/A N/A 3.0 ppb (3) N/A 2.0 ppb (3) 41.0 ppb (32) N/A N/A 3.5 μg/m3 (15) 32.0
 
April 3, 2020, 10 p.m. N/A N/A N/A 3.0 ppb (3) N/A 2.0 ppb (3) 41.0 ppb (32) N/A N/A 3.2 μg/m3 (13) 32.0
 
April 3, 2020, 9 p.m. N/A N/A N/A 3.0 ppb (3) N/A 1.0 ppb (1) 41.0 ppb (32) N/A N/A 2.9 μg/m3 (12) 32.0
 
April 3, 2020, 8 p.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 40.0 ppb (31) N/A N/A 2.8 μg/m3 (12) 31.0
 
April 3, 2020, 7 p.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 40.0 ppb (31) N/A N/A 2.7 μg/m3 (11) 31.0
 
April 3, 2020, 6 p.m. N/A N/A N/A 2.0 ppb (2) N/A 1.0 ppb (1) 41.0 ppb (32) N/A N/A 2.2 μg/m3 (9) 32.0
 
April 3, 2020, 5 p.m. N/A N/A N/A 7.0 ppb (6) N/A 1.0 ppb (1) 39.0 ppb (30) N/A N/A 2.9 μg/m3 (12) 30.0
 
April 3, 2020, 4 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 39.0 ppb (30) N/A N/A 1.9 μg/m3 (8) 30.0
 
April 3, 2020, 3 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 39.0 ppb (30) N/A N/A 1.8 μg/m3 (8) 30.0
 
April 3, 2020, 2 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 37.0 ppb (28) N/A N/A 1.5 μg/m3 (6) 28.0
 
April 3, 2020, 1 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 37.0 ppb (28) N/A N/A 1.5 μg/m3 (6) 28.0
 
April 3, 2020, noon N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 37.0 ppb (28) N/A N/A 1.4 μg/m3 (6) 28.0
 
April 3, 2020, 11 a.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 37.0 ppb (28) N/A N/A 1.3 μg/m3 (5) 28.0
 
April 3, 2020, 10 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 1.1 μg/m3 (5) 5.0
 
April 3, 2020, 9 a.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 39.0 ppb (30) N/A N/A 1.1 μg/m3 (5) 30.0
 
April 3, 2020, 8 a.m. N/A N/A N/A 5.0 ppb (5) N/A 0.0 ppb (0) 39.0 ppb (30) N/A N/A 1.2 μg/m3 (5) 30.0
 
April 3, 2020, 7 a.m. N/A N/A N/A 4.0 ppb (4) N/A 0.0 ppb (0) 41.0 ppb (32) N/A N/A 1.2 μg/m3 (5) 32.0
 
April 3, 2020, 6 a.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 42.0 ppb (32) N/A N/A 1.3 μg/m3 (5) 32.0
 
April 3, 2020, 5 a.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 43.0 ppb (33) N/A N/A 1.2 μg/m3 (5) 33.0
 
April 3, 2020, 4 a.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 44.0 ppb (34) N/A N/A 1.2 μg/m3 (5) 34.0
 
April 3, 2020, 3 a.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 44.0 ppb (34) N/A N/A 1.1 μg/m3 (5) 34.0
 
April 3, 2020, 2 a.m. N/A N/A N/A 1.0 ppb (1) N/A 1.0 ppb (1) 45.0 ppb (35) N/A N/A 1.1 μg/m3 (5) 35.0
 
April 3, 2020, 1 a.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 45.0 ppb (35) N/A N/A 1.2 μg/m3 (5) 35.0
 
April 3, 2020, midnight N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 45.0 ppb (35) N/A N/A 1.2 μg/m3 (5) 35.0
 
April 2, 2020, 11 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 45.0 ppb (35) N/A N/A 1.3 μg/m3 (5) 35.0
 
April 2, 2020, 10 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 45.0 ppb (35) N/A N/A 1.3 μg/m3 (5) 35.0
 
April 2, 2020, 9 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 45.0 ppb (35) N/A N/A 1.4 μg/m3 (6) 35.0
 
April 2, 2020, 8 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 45.0 ppb (35) N/A N/A 1.3 μg/m3 (5) 35.0
 
April 2, 2020, 7 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 43.0 ppb (33) N/A N/A 1.4 μg/m3 (6) 33.0
 
April 2, 2020, 6 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 43.0 ppb (33) N/A N/A 1.4 μg/m3 (6) 33.0
 
April 2, 2020, 5 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 41.0 ppb (32) N/A N/A 1.4 μg/m3 (6) 32.0
 
April 2, 2020, 4 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 39.0 ppb (30) N/A N/A 1.4 μg/m3 (6) 30.0
 
April 2, 2020, 3 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 37.0 ppb (28) N/A N/A 1.4 μg/m3 (6) 28.0
 
April 2, 2020, 1 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 37.0 ppb (28) N/A N/A 1.4 μg/m3 (6) 28.0
 
April 2, 2020, noon N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 37.0 ppb (28) N/A N/A 1.3 μg/m3 (5) 28.0
 
April 2, 2020, 11 a.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 37.0 ppb (28) N/A N/A 1.2 μg/m3 (5) 28.0
 
April 2, 2020, 10 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 1.3 μg/m3 (5) 5.0