ID: 2076

AQSQID: 000091701

Site Name: Steeper

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

Updated: April 16, 2021, 1:44 p.m.

Location: Alberta (Yellowhead Co), CC

Reporting: True, Located: True

Current AQI: 47.0

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 16, 2021, 11 a.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 50.0 ppb (47) N/A N/A 1.9 μg/m3 (8) 47.0
 
April 16, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 1.9 μg/m3 (8) 8.0
 
April 16, 2021, 9 a.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 49.0 ppb (46) N/A N/A 1.9 μg/m3 (8) 46.0
 
April 16, 2021, 8 a.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 48.0 ppb (45) N/A N/A 1.8 μg/m3 (8) 45.0
 
April 16, 2021, 7 a.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 46.0 ppb (43) N/A N/A 1.8 μg/m3 (8) 43.0
 
April 16, 2021, 6 a.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 46.0 ppb (43) N/A N/A 2.1 μg/m3 (9) 43.0
 
April 16, 2021, 5 a.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 46.0 ppb (43) N/A N/A 2.2 μg/m3 (10) 43.0
 
April 16, 2021, 4 a.m. N/A N/A N/A 1.0 ppb (1) N/A 1.0 ppb (2) 51.0 ppb (48) N/A N/A 2.8 μg/m3 (12) 48.0
 
April 16, 2021, 3 a.m. N/A N/A N/A 1.0 ppb (1) N/A 1.0 ppb (2) 58.0 ppb (61) N/A N/A 3.7 μg/m3 (16) 61.0
 
April 16, 2021, 2 a.m. N/A N/A N/A 1.0 ppb (1) N/A 1.0 ppb (2) 57.0 ppb (58) N/A N/A 3.4 μg/m3 (15) 58.0
 
April 16, 2021, 1 a.m. N/A N/A N/A 1.0 ppb (1) N/A 1.0 ppb (2) 57.0 ppb (58) N/A N/A 2.4 μg/m3 (10) 58.0
 
April 16, 2021, midnight N/A N/A N/A 1.0 ppb (1) N/A 1.0 ppb (2) 55.0 ppb (51) N/A N/A 2.4 μg/m3 (10) 51.0
 
April 15, 2021, 11 p.m. N/A N/A N/A 1.0 ppb (1) N/A 1.0 ppb (2) 55.0 ppb (51) N/A N/A 2.4 μg/m3 (10) 51.0
 
April 15, 2021, 10 p.m. N/A N/A N/A 1.0 ppb (1) N/A 1.0 ppb (2) 54.0 ppb (50) N/A N/A 2.3 μg/m3 (10) 50.0
 
April 15, 2021, 9 p.m. N/A N/A N/A 1.0 ppb (1) N/A 1.0 ppb (2) 54.0 ppb (50) N/A N/A 2.2 μg/m3 (10) 50.0
 
April 15, 2021, 8 p.m. N/A N/A N/A 1.0 ppb (1) N/A 2.0 ppb (3) 53.0 ppb (50) N/A N/A 2.1 μg/m3 (9) 50.0
 
April 15, 2021, 7 p.m. N/A N/A N/A 1.0 ppb (1) N/A 1.0 ppb (2) 49.0 ppb (46) N/A N/A 1.9 μg/m3 (8) 46.0
 
April 15, 2021, 6 p.m. N/A N/A N/A 1.0 ppb (1) N/A 1.0 ppb (2) 48.0 ppb (45) N/A N/A 1.9 μg/m3 (8) 45.0
 
April 15, 2021, 5 p.m. N/A N/A N/A 1.0 ppb (1) N/A 1.0 ppb (2) 45.0 ppb (42) N/A N/A 1.9 μg/m3 (8) 42.0
 
April 15, 2021, 4 p.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 43.0 ppb (40) N/A N/A 1.8 μg/m3 (8) 40.0
 
April 15, 2021, 3 p.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 41.0 ppb (38) N/A N/A 1.7 μg/m3 (8) 38.0
 
April 15, 2021, 2 p.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 40.0 ppb (38) N/A N/A 1.7 μg/m3 (8) 38.0
 
April 15, 2021, 1 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 40.0 ppb (38) N/A N/A 1.7 μg/m3 (8) 38.0
 
April 15, 2021, noon N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 39.0 ppb (37) N/A N/A 1.7 μg/m3 (8) 37.0
 
April 15, 2021, 11 a.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 40.0 ppb (38) N/A N/A 1.7 μg/m3 (8) 38.0
 
April 15, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 1.7 μg/m3 (8) 8.0
 
April 15, 2021, 9 a.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 40.0 ppb (38) N/A N/A 1.7 μg/m3 (8) 38.0
 
April 15, 2021, 8 a.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 40.0 ppb (38) N/A N/A 1.7 μg/m3 (8) 38.0
 
April 14, 2021, 11 p.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 51.0 ppb (48) N/A N/A 2.4 μg/m3 (10) 48.0
 
April 14, 2021, 10 p.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 52.0 ppb (49) N/A N/A 2.6 μg/m3 (11) 49.0
 
April 14, 2021, 9 p.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 53.0 ppb (50) N/A N/A 2.3 μg/m3 (10) 50.0
 
April 14, 2021, 8 p.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 52.0 ppb (49) N/A N/A 2.4 μg/m3 (10) 49.0
 
April 14, 2021, 7 p.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 53.0 ppb (50) N/A N/A 2.8 μg/m3 (12) 50.0
 
April 14, 2021, 6 p.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 53.0 ppb (50) N/A N/A 2.3 μg/m3 (10) 50.0
 
April 14, 2021, 5 p.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 52.0 ppb (49) N/A N/A 1.8 μg/m3 (8) 49.0
 
April 14, 2021, 4 p.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 51.0 ppb (48) N/A N/A 1.9 μg/m3 (8) 48.0
 
April 14, 2021, 3 p.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 49.0 ppb (46) N/A N/A 1.9 μg/m3 (8) 46.0
 
April 14, 2021, 2 p.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 48.0 ppb (45) N/A N/A 1.9 μg/m3 (8) 45.0
 
April 14, 2021, 1 p.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 49.0 ppb (46) N/A N/A 1.9 μg/m3 (8) 46.0
 
April 14, 2021, noon N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 49.0 ppb (46) N/A N/A 1.8 μg/m3 (8) 46.0
 
April 14, 2021, 11 a.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 49.0 ppb (46) N/A N/A 1.8 μg/m3 (8) 46.0
 
April 14, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 1.8 μg/m3 (8) 8.0
 
April 14, 2021, 9 a.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 49.0 ppb (46) N/A N/A 1.7 μg/m3 (8) 46.0
 
April 14, 2021, 8 a.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 49.0 ppb (46) N/A N/A 1.7 μg/m3 (8) 46.0
 
April 14, 2021, 7 a.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 49.0 ppb (46) N/A N/A 1.6 μg/m3 (7) 46.0
 
April 14, 2021, 6 a.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 49.0 ppb (46) N/A N/A 1.3 μg/m3 (6) 46.0
 
April 14, 2021, 5 a.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 48.0 ppb (45) N/A N/A 1.3 μg/m3 (6) 45.0
 
April 14, 2021, 4 a.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 49.0 ppb (46) N/A N/A 1.4 μg/m3 (6) 46.0
 
April 14, 2021, 3 a.m. N/A N/A N/A 1.0 ppb (1) N/A 1.0 ppb (2) 55.0 ppb (51) N/A N/A 1.9 μg/m3 (8) 51.0
 
April 14, 2021, 2 a.m. N/A N/A N/A 1.0 ppb (1) N/A 1.0 ppb (2) 58.0 ppb (61) N/A N/A 1.9 μg/m3 (8) 61.0
 
April 14, 2021, 1 a.m. N/A N/A N/A 1.0 ppb (1) N/A 1.0 ppb (2) 59.0 ppb (65) N/A N/A 1.9 μg/m3 (8) 65.0
 
April 14, 2021, midnight N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 59.0 ppb (65) N/A N/A 1.8 μg/m3 (8) 65.0
 
April 13, 2021, 11 p.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 58.0 ppb (61) N/A N/A 1.7 μg/m3 (8) 61.0
 
April 13, 2021, 10 p.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 58.0 ppb (61) N/A N/A 1.7 μg/m3 (8) 61.0
 
April 13, 2021, 9 p.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 58.0 ppb (61) N/A N/A 1.7 μg/m3 (8) 61.0
 
April 13, 2021, 8 p.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 57.0 ppb (58) N/A N/A 1.6 μg/m3 (7) 58.0
 
April 13, 2021, 7 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 57.0 ppb (58) N/A N/A 1.1 μg/m3 (5) 58.0
 
April 13, 2021, 6 p.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 55.0 ppb (51) N/A N/A 0.9 μg/m3 (4) 51.0
 
April 13, 2021, 5 p.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 55.0 ppb (51) N/A N/A 0.9 μg/m3 (4) 51.0
 
April 13, 2021, 4 p.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 50.0 ppb (47) N/A N/A 0.6 μg/m3 (3) 47.0
 
April 13, 2021, 3 p.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 47.0 ppb (44) N/A N/A 0.5 μg/m3 (3) 44.0
 
April 13, 2021, 2 p.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 45.0 ppb (42) N/A N/A 0.4 μg/m3 (2) 42.0
 
April 13, 2021, 1 p.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 44.0 ppb (41) N/A N/A 0.4 μg/m3 (2) 41.0
 
April 13, 2021, noon N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 43.0 ppb (40) N/A N/A 0.4 μg/m3 (2) 40.0
 
April 13, 2021, 11 a.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 43.0 ppb (40) N/A N/A 0.4 μg/m3 (2) 40.0
 
April 13, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 0.4 μg/m3 (2) 2.0
 
April 13, 2021, 9 a.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 41.0 ppb (38) N/A N/A 0.4 μg/m3 (2) 38.0
 
April 13, 2021, 8 a.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 41.0 ppb (38) N/A N/A 0.4 μg/m3 (2) 38.0
 
April 13, 2021, 7 a.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 40.0 ppb (38) N/A N/A 0.5 μg/m3 (3) 38.0
 
April 13, 2021, 6 a.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 40.0 ppb (38) N/A N/A 0.7 μg/m3 (3) 38.0
 
April 13, 2021, 5 a.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 41.0 ppb (38) N/A N/A 0.7 μg/m3 (3) 38.0
 
April 13, 2021, 4 a.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 43.0 ppb (40) N/A N/A 0.8 μg/m3 (4) 40.0
 
April 13, 2021, 3 a.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 46.0 ppb (43) N/A N/A 0.8 μg/m3 (4) 43.0
 
April 13, 2021, 2 a.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 47.0 ppb (44) N/A N/A 0.7 μg/m3 (3) 44.0
 
April 13, 2021, 1 a.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 48.0 ppb (45) N/A N/A 0.8 μg/m3 (4) 45.0
 
April 13, 2021, midnight N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 49.0 ppb (46) N/A N/A 0.7 μg/m3 (3) 46.0
 
April 12, 2021, 11 p.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 48.0 ppb (45) N/A N/A 0.7 μg/m3 (3) 45.0
 
April 12, 2021, 10 p.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 47.0 ppb (44) N/A N/A 0.7 μg/m3 (3) 44.0
 
April 12, 2021, 9 p.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 46.0 ppb (43) N/A N/A 0.8 μg/m3 (4) 43.0
 
April 12, 2021, 8 p.m. N/A N/A N/A 0.0 ppb (0) N/A 1.0 ppb (2) 45.0 ppb (42) N/A N/A 0.8 μg/m3 (4) 42.0
 
April 12, 2021, 5 p.m. N/A N/A N/A 1.0 ppb (1) N/A 1.0 ppb (2) 42.0 ppb (39) N/A N/A 0.9 μg/m3 (4) 39.0
 
April 12, 2021, 4 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 39.0 ppb (37) N/A N/A 1.2 μg/m3 (5) 37.0
 
April 12, 2021, 3 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 37.0 ppb (35) N/A N/A 1.0 μg/m3 (5) 35.0
 
April 12, 2021, 2 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 34.0 ppb (32) N/A N/A 0.8 μg/m3 (4) 32.0
 
April 12, 2021, 1 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 36.0 ppb (34) N/A N/A 0.9 μg/m3 (4) 34.0
 
April 12, 2021, noon N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 34.0 ppb (32) N/A N/A 0.8 μg/m3 (4) 32.0
 
April 12, 2021, 11 a.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 37.0 ppb (35) N/A N/A 0.6 μg/m3 (3) 35.0
 
April 12, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 0.6 μg/m3 (3) 3.0
 
April 12, 2021, 9 a.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 39.0 ppb (37) N/A N/A 0.5 μg/m3 (3) 37.0
 
April 12, 2021, 8 a.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 40.0 ppb (38) N/A N/A 0.6 μg/m3 (3) 38.0
 
April 12, 2021, 7 a.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 40.0 ppb (38) N/A N/A 0.5 μg/m3 (3) 38.0
 
April 12, 2021, 6 a.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 40.0 ppb (38) N/A N/A 0.4 μg/m3 (2) 38.0
 
April 12, 2021, 5 a.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 40.0 ppb (38) N/A N/A 0.4 μg/m3 (2) 38.0
 
April 12, 2021, 4 a.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 43.0 ppb (40) N/A N/A 0.3 μg/m3 (2) 40.0
 
April 12, 2021, 3 a.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 43.0 ppb (40) N/A N/A 0.3 μg/m3 (2) 40.0
 
April 12, 2021, 2 a.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 43.0 ppb (40) N/A N/A 0.4 μg/m3 (2) 40.0
 
April 12, 2021, 1 a.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 45.0 ppb (42) N/A N/A 0.4 μg/m3 (2) 42.0
 
April 12, 2021, midnight N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 44.0 ppb (41) N/A N/A 0.4 μg/m3 (2) 41.0
 
April 11, 2021, 11 p.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 45.0 ppb (42) N/A N/A 0.5 μg/m3 (3) 42.0
 
April 11, 2021, 10 p.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 45.0 ppb (42) N/A N/A 0.4 μg/m3 (2) 42.0
 
April 11, 2021, 9 p.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 45.0 ppb (42) N/A N/A 0.4 μg/m3 (2) 42.0
 
April 11, 2021, 8 p.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 45.0 ppb (42) N/A N/A 0.5 μg/m3 (3) 42.0
 
April 11, 2021, 7 p.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 46.0 ppb (43) N/A N/A 0.3 μg/m3 (2) 43.0
 
April 11, 2021, 6 p.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 47.0 ppb (44) N/A N/A 0.3 μg/m3 (2) 44.0
 
April 11, 2021, 5 p.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 47.0 ppb (44) N/A N/A 0.3 μg/m3 (2) 44.0
 
April 11, 2021, 4 p.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 44.0 ppb (41) N/A N/A 0.3 μg/m3 (2) 41.0
 
April 11, 2021, 3 p.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 39.0 ppb (37) N/A N/A 0.4 μg/m3 (2) 37.0
 
April 11, 2021, 2 p.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 39.0 ppb (37) N/A N/A 0.4 μg/m3 (2) 37.0
 
April 11, 2021, 1 p.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 36.0 ppb (34) N/A N/A 0.4 μg/m3 (2) 34.0
 
April 11, 2021, noon N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 34.0 ppb (32) N/A N/A 0.6 μg/m3 (3) 32.0
 
April 11, 2021, 11 a.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 32.0 ppb (30) N/A N/A 0.7 μg/m3 (3) 30.0
 
April 11, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 0.9 μg/m3 (4) 4.0
 
April 11, 2021, 9 a.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 33.0 ppb (31) N/A N/A 1.0 μg/m3 (5) 31.0
 
April 11, 2021, 8 a.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 36.0 ppb (34) N/A N/A 1.0 μg/m3 (5) 34.0
 
April 11, 2021, 7 a.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 37.0 ppb (35) N/A N/A 1.1 μg/m3 (5) 35.0
 
April 11, 2021, 6 a.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 38.0 ppb (36) N/A N/A 1.2 μg/m3 (5) 36.0
 
April 11, 2021, 5 a.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 38.0 ppb (36) N/A N/A 1.2 μg/m3 (5) 36.0
 
April 11, 2021, 4 a.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 40.0 ppb (38) N/A N/A 1.0 μg/m3 (5) 38.0
 
April 11, 2021, 3 a.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 44.0 ppb (41) N/A N/A 0.7 μg/m3 (3) 41.0
 
April 11, 2021, 2 a.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 44.0 ppb (41) N/A N/A 0.7 μg/m3 (3) 41.0
 
April 11, 2021, 1 a.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 44.0 ppb (41) N/A N/A 0.7 μg/m3 (3) 41.0
 
April 11, 2021, midnight N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 44.0 ppb (41) N/A N/A 0.6 μg/m3 (3) 41.0
 
April 10, 2021, 11 p.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 45.0 ppb (42) N/A N/A 0.6 μg/m3 (3) 42.0
 
April 10, 2021, 10 p.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 46.0 ppb (43) N/A N/A 0.7 μg/m3 (3) 43.0
 
April 10, 2021, 9 p.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 43.0 ppb (40) N/A N/A 0.6 μg/m3 (3) 40.0
 
April 10, 2021, 8 p.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 44.0 ppb (41) N/A N/A 0.5 μg/m3 (3) 41.0
 
April 10, 2021, 7 p.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 45.0 ppb (42) N/A N/A 0.5 μg/m3 (3) 42.0
 
April 10, 2021, 6 p.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 46.0 ppb (43) N/A N/A 0.5 μg/m3 (3) 43.0
 
April 10, 2021, 5 p.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 47.0 ppb (44) N/A N/A 0.5 μg/m3 (3) 44.0
 
April 10, 2021, 4 p.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 46.0 ppb (43) N/A N/A 0.4 μg/m3 (2) 43.0
 
April 10, 2021, 3 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 43.0 ppb (40) N/A N/A 0.9 μg/m3 (4) 40.0
 
April 10, 2021, 2 p.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 41.0 ppb (38) N/A N/A 1.3 μg/m3 (6) 38.0
 
April 10, 2021, 1 p.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 43.0 ppb (40) N/A N/A 0.6 μg/m3 (3) 40.0
 
April 10, 2021, noon N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 45.0 ppb (42) N/A N/A 0.6 μg/m3 (3) 42.0
 
April 10, 2021, 11 a.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 47.0 ppb (44) N/A N/A 1.2 μg/m3 (5) 44.0
 
April 10, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 0.7 μg/m3 (3) 3.0
 
April 10, 2021, 9 a.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 48.0 ppb (45) N/A N/A 0.5 μg/m3 (3) 45.0
 
April 10, 2021, 8 a.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 49.0 ppb (46) N/A N/A 0.5 μg/m3 (3) 46.0
 
April 10, 2021, 7 a.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 49.0 ppb (46) N/A N/A 0.5 μg/m3 (3) 46.0
 
April 10, 2021, 6 a.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 50.0 ppb (47) N/A N/A 0.6 μg/m3 (3) 47.0
 
April 10, 2021, 5 a.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 50.0 ppb (47) N/A N/A 0.7 μg/m3 (3) 47.0
 
April 10, 2021, 4 a.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 50.0 ppb (47) N/A N/A 0.8 μg/m3 (4) 47.0
 
April 10, 2021, 3 a.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 50.0 ppb (47) N/A N/A 0.8 μg/m3 (4) 47.0
 
April 10, 2021, 2 a.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 50.0 ppb (47) N/A N/A 0.8 μg/m3 (4) 47.0
 
April 10, 2021, 1 a.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 49.0 ppb (46) N/A N/A 0.9 μg/m3 (4) 46.0
 
April 10, 2021, midnight N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 50.0 ppb (47) N/A N/A 0.9 μg/m3 (4) 47.0
 
April 9, 2021, 11 p.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 50.0 ppb (47) N/A N/A 1.0 μg/m3 (5) 47.0
 
April 9, 2021, 10 p.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 51.0 ppb (48) N/A N/A 1.0 μg/m3 (5) 48.0
 
April 9, 2021, 9 p.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 51.0 ppb (48) N/A N/A 1.1 μg/m3 (5) 48.0
 
April 9, 2021, 8 p.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 51.0 ppb (48) N/A N/A 1.1 μg/m3 (5) 48.0
 
April 9, 2021, 7 p.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) N/A N/A N/A 1.1 μg/m3 (5) 5.0
 
April 9, 2021, 6 p.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) N/A N/A N/A 1.3 μg/m3 (6) 6.0
 
April 9, 2021, 5 p.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) N/A N/A N/A 1.3 μg/m3 (6) 6.0
 
April 9, 2021, 4 p.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 50.0 ppb (47) N/A N/A 1.2 μg/m3 (5) 47.0
 
April 9, 2021, 3 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 50.0 ppb (47) N/A N/A 1.1 μg/m3 (5) 47.0
 
April 9, 2021, 2 p.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 50.0 ppb (47) N/A N/A 1.0 μg/m3 (5) 47.0
 
April 9, 2021, 1 p.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 50.0 ppb (47) N/A N/A 1.0 μg/m3 (5) 47.0
 
April 9, 2021, noon N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 50.0 ppb (47) N/A N/A 1.1 μg/m3 (5) 47.0
 
April 9, 2021, 11 a.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 50.0 ppb (47) N/A N/A 1.0 μg/m3 (5) 47.0
 
April 9, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 0.9 μg/m3 (4) 4.0
 
April 9, 2021, 9 a.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 50.0 ppb (47) N/A N/A 0.8 μg/m3 (4) 47.0
 
April 9, 2021, 8 a.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 49.0 ppb (46) N/A N/A 0.8 μg/m3 (4) 46.0
 
April 9, 2021, 7 a.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 48.0 ppb (45) N/A N/A 0.7 μg/m3 (3) 45.0
 
April 9, 2021, 6 a.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 47.0 ppb (44) N/A N/A 0.7 μg/m3 (3) 44.0
 
April 9, 2021, 5 a.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 46.0 ppb (43) N/A N/A 0.6 μg/m3 (3) 43.0
 
April 9, 2021, 4 a.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 46.0 ppb (43) N/A N/A 0.5 μg/m3 (3) 43.0
 
April 9, 2021, 3 a.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 46.0 ppb (43) N/A N/A 0.5 μg/m3 (3) 43.0
 
April 9, 2021, 2 a.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 46.0 ppb (43) N/A N/A 0.6 μg/m3 (3) 43.0