ID: 2076

AQSQID: 000091701

Site Name: Steeper

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

Updated: March 3, 2021, 10:32 a.m.

Location: Alberta (Yellowhead Co), CC

Reporting: True, Located: True

Current AQI: 46.0

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
Feb. 14, 2021, 11 a.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 38.0 ppb (36) N/A N/A 11.1 μg/m3 (47) 47.0
 
Feb. 14, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 11.1 μg/m3 (47) 47.0
 
Feb. 14, 2021, 9 a.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 35.0 ppb (33) N/A N/A 10.2 μg/m3 (43) 43.0
 
Feb. 14, 2021, 8 a.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 35.0 ppb (33) N/A N/A 10.5 μg/m3 (44) 44.0
 
Feb. 14, 2021, 7 a.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 36.0 ppb (34) N/A N/A 11.3 μg/m3 (48) 48.0
 
Feb. 14, 2021, 6 a.m. N/A N/A N/A 4.0 ppb (4) N/A 0.0 ppb (0) 37.0 ppb (35) N/A N/A 11.6 μg/m3 (49) 49.0
 
Feb. 14, 2021, 5 a.m. N/A N/A N/A 4.0 ppb (4) N/A 0.0 ppb (0) 37.0 ppb (35) N/A N/A 12.5 μg/m3 (52) 52.0
 
Feb. 14, 2021, 4 a.m. N/A N/A N/A 5.0 ppb (5) N/A 1.0 ppb (2) 38.0 ppb (36) N/A N/A 11.0 μg/m3 (46) 46.0
 
Feb. 14, 2021, 3 a.m. N/A N/A N/A 5.0 ppb (5) N/A 1.0 ppb (2) 39.0 ppb (37) N/A N/A 11.4 μg/m3 (48) 48.0
 
Feb. 14, 2021, 2 a.m. N/A N/A N/A 5.0 ppb (5) N/A 1.0 ppb (2) 41.0 ppb (38) N/A N/A 13.0 μg/m3 (53) 53.0
 
Feb. 14, 2021, 1 a.m. N/A N/A N/A 4.0 ppb (4) N/A 1.0 ppb (2) 44.0 ppb (41) N/A N/A 14.4 μg/m3 (56) 56.0
 
Feb. 14, 2021, midnight N/A N/A N/A 4.0 ppb (4) N/A 0.0 ppb (0) 43.0 ppb (40) N/A N/A 9.6 μg/m3 (40) 40.0
 
Feb. 13, 2021, 11 p.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 41.0 ppb (38) N/A N/A 9.6 μg/m3 (40) 40.0
 
Feb. 13, 2021, 10 p.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 42.0 ppb (39) N/A N/A 14.8 μg/m3 (57) 57.0
 
Feb. 13, 2021, 9 p.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 41.0 ppb (38) N/A N/A 17.0 μg/m3 (62) 62.0
 
Feb. 13, 2021, 8 p.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 41.0 ppb (38) N/A N/A 45.5 μg/m3 (126) 126.0
 
Feb. 13, 2021, 7 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 40.0 ppb (38) N/A N/A 30.2 μg/m3 (90) 90.0
 
Feb. 13, 2021, 6 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 15.1 μg/m3 (58) 58.0
 
Feb. 13, 2021, 5 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 37.0 ppb (35) N/A N/A 24.8 μg/m3 (78) 78.0
 
Feb. 13, 2021, 4 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 39.0 ppb (37) N/A N/A 10.2 μg/m3 (43) 43.0
 
Feb. 13, 2021, 3 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 5.0 μg/m3 (21) 38.0
 
Feb. 13, 2021, 2 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 8.8 μg/m3 (37) 38.0
 
Feb. 13, 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 8.0 μg/m3 (34) 38.0
 
Feb. 13, 2021, noon N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 41.0 ppb (38) N/A N/A 8.0 μg/m3 (34) 38.0
 
Feb. 13, 2021, 11 a.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 41.0 ppb (38) N/A N/A 10.3 μg/m3 (43) 43.0
 
Feb. 13, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 10.9 μg/m3 (46) 46.0
 
Feb. 13, 2021, 9 a.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 41.0 ppb (38) N/A N/A 14.8 μg/m3 (57) 57.0
 
Feb. 13, 2021, 8 a.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 41.0 ppb (38) N/A N/A 15.2 μg/m3 (58) 58.0
 
Feb. 13, 2021, 7 a.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 40.0 ppb (38) N/A N/A 13.4 μg/m3 (54) 54.0
 
Feb. 13, 2021, 6 a.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 40.0 ppb (38) N/A N/A 12.4 μg/m3 (52) 52.0
 
Feb. 13, 2021, 5 a.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 41.0 ppb (38) N/A N/A 16.6 μg/m3 (61) 61.0
 
Feb. 13, 2021, 4 a.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 43.0 ppb (40) N/A N/A 20.7 μg/m3 (70) 70.0
 
Feb. 13, 2021, 3 a.m. N/A N/A N/A 4.0 ppb (4) N/A 1.0 ppb (2) 45.0 ppb (42) N/A N/A 33.3 μg/m3 (96) 96.0
 
Feb. 13, 2021, 2 a.m. N/A N/A N/A 5.0 ppb (5) N/A 2.0 ppb (3) 45.0 ppb (42) N/A N/A 22.0 μg/m3 (72) 72.0
 
Feb. 13, 2021, 1 a.m. N/A N/A N/A 7.0 ppb (7) N/A 0.0 ppb (0) 45.0 ppb (42) N/A N/A 22.3 μg/m3 (73) 73.0
 
Feb. 13, 2021, midnight N/A N/A N/A 9.0 ppb (9) N/A 0.0 ppb (0) 44.0 ppb (41) N/A N/A 23.7 μg/m3 (76) 76.0
 
Feb. 12, 2021, 11 p.m. N/A N/A N/A N/A N/A 1.0 ppb (2) 43.0 ppb (40) N/A N/A 28.9 μg/m3 (87) 87.0
 
Feb. 12, 2021, 10 p.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 47.0 ppb (44) N/A N/A 15.1 μg/m3 (58) 58.0
 
Feb. 12, 2021, 9 p.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 46.0 ppb (43) N/A N/A 15.7 μg/m3 (59) 59.0
 
Feb. 12, 2021, 8 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 44.0 ppb (41) N/A N/A 10.1 μg/m3 (43) 43.0
 
Feb. 12, 2021, 7 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 42.0 ppb (39) N/A N/A 2.7 μg/m3 (12) 39.0
 
Feb. 12, 2021, 6 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 0.7 μg/m3 (3) 38.0
 
Feb. 12, 2021, 5 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 0.7 μg/m3 (3) 38.0
 
Feb. 12, 2021, 4 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 0.8 μg/m3 (4) 34.0
 
Feb. 12, 2021, 3 p.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 37.0 ppb (35) N/A N/A 0.7 μg/m3 (3) 35.0
 
Feb. 12, 2021, 2 p.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 37.0 ppb (35) N/A N/A 1.0 μg/m3 (5) 35.0
 
Feb. 12, 2021, 1 p.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 37.0 ppb (35) N/A N/A 0.7 μg/m3 (3) 35.0
 
Feb. 12, 2021, noon N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 38.0 ppb (36) N/A N/A 0.6 μg/m3 (3) 36.0
 
Feb. 12, 2021, 11 a.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 37.0 ppb (35) N/A N/A 0.5 μg/m3 (3) 35.0
 
Feb. 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
 
Feb. 12, 2021, 9 a.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 0.7 μg/m3 (3) 34.0
 
Feb. 12, 2021, 8 a.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 0.8 μg/m3 (4) 34.0
 
Feb. 12, 2021, 7 a.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 0.6 μg/m3 (3) 34.0
 
Feb. 12, 2021, 6 a.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 0.7 μg/m3 (3) 34.0
 
Feb. 12, 2021, 5 a.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 0.8 μg/m3 (4) 34.0
 
Feb. 12, 2021, 4 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 0.9 μg/m3 (4) 34.0
 
Feb. 12, 2021, 3 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
 
Feb. 12, 2021, 2 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 1.4 μg/m3 (6) 36.0
 
Feb. 12, 2021, 1 a.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 38.0 ppb (36) N/A N/A 15.2 μg/m3 (58) 58.0
 
Feb. 12, 2021, midnight N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 38.0 ppb (36) N/A N/A 33.4 μg/m3 (96) 96.0
 
Feb. 11, 2021, 11 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 40.0 ppb (38) N/A N/A 22.3 μg/m3 (73) 73.0
 
Feb. 11, 2021, 10 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 39.0 ppb (37) N/A N/A 10.1 μg/m3 (43) 43.0
 
Feb. 11, 2021, 9 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 1.0 μg/m3 (5) 37.0
 
Feb. 11, 2021, 8 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 1.8 μg/m3 (8) 37.0
 
Feb. 11, 2021, 7 p.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 2.9 μg/m3 (13) 36.0
 
Feb. 11, 2021, 6 p.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) 37.0 ppb (35) N/A N/A 1.1 μg/m3 (5) 35.0
 
Feb. 11, 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 1.1 μg/m3 (5) 5.0
 
Feb. 11, 2021, 4 p.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) N/A N/A N/A 1.2 μg/m3 (5) 5.0
 
Feb. 11, 2021, 3 p.m. N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) N/A N/A N/A 1.2 μg/m3 (5) 5.0
 
Feb. 11, 2021, 2 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
 
Feb. 11, 2021, 1 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
 
Feb. 11, 2021, noon N/A N/A N/A 0.0 ppb (0) N/A 0.0 ppb (0) N/A N/A N/A 1.4 μg/m3 (6) 6.0
 
Feb. 11, 2021, 11 a.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 1.3 μg/m3 (6) 34.0
 
Feb. 11, 2021, 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 (6) 6.0
 
Feb. 11, 2021, 9 a.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 1.3 μg/m3 (6) 34.0
 
Feb. 11, 2021, 8 a.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 1.5 μg/m3 (7) 34.0
 
Feb. 11, 2021, 7 a.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 1.7 μg/m3 (8) 34.0
 
Feb. 11, 2021, 6 a.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 1.9 μg/m3 (8) 34.0
 
Feb. 11, 2021, 5 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 1.9 μg/m3 (8) 34.0
 
Feb. 11, 2021, 4 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 2.0 μg/m3 (9) 34.0
 
Feb. 11, 2021, 3 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 1.9 μg/m3 (8) 35.0
 
Feb. 11, 2021, 2 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 3.8 μg/m3 (16) 36.0
 
Feb. 11, 2021, 1 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 2.9 μg/m3 (13) 36.0
 
Feb. 11, 2021, midnight N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 38.0 ppb (36) N/A N/A 2.5 μg/m3 (11) 36.0
 
Feb. 10, 2021, 11 p.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 2.0 μg/m3 (9) 36.0
 
Feb. 10, 2021, 10 p.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 2.2 μg/m3 (10) 36.0
 
Feb. 10, 2021, 9 p.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 2.4 μg/m3 (10) 36.0
 
Feb. 10, 2021, 8 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 2.2 μg/m3 (10) 37.0
 
Feb. 10, 2021, 7 p.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 2.7 μg/m3 (12) 36.0
 
Feb. 10, 2021, 6 p.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 2.3 μg/m3 (10) 36.0
 
Feb. 10, 2021, 5 p.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 1.9 μg/m3 (8) 36.0
 
Feb. 10, 2021, 4 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 2.0 μg/m3 (9) 35.0
 
Feb. 10, 2021, 3 p.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 1.8 μg/m3 (8) 36.0
 
Feb. 10, 2021, 2 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 2.2 μg/m3 (10) 35.0
 
Feb. 10, 2021, 1 p.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 1.9 μg/m3 (8) 36.0
 
Feb. 10, 2021, noon N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 35.0 ppb (33) N/A N/A 2.3 μg/m3 (10) 33.0
 
Feb. 10, 2021, 11 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 2.3 μg/m3 (10) 34.0
 
Feb. 10, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 2.7 μg/m3 (12) 12.0
 
Feb. 10, 2021, 9 a.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 33.0 ppb (31) N/A N/A 2.9 μg/m3 (13) 31.0
 
Feb. 10, 2021, 8 a.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 2.7 μg/m3 (12) 32.0
 
Feb. 10, 2021, 7 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 2.3 μg/m3 (10) 34.0
 
Feb. 10, 2021, 6 a.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 3.1 μg/m3 (13) 32.0
 
Feb. 10, 2021, 5 a.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 3.6 μg/m3 (16) 32.0
 
Feb. 10, 2021, 4 a.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 32.0 ppb (30) N/A N/A 5.6 μg/m3 (24) 30.0
 
Feb. 10, 2021, 3 a.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 31.0 ppb (29) N/A N/A 9.1 μg/m3 (38) 38.0
 
Feb. 10, 2021, 2 a.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 31.0 ppb (29) N/A N/A 9.5 μg/m3 (40) 40.0
 
Feb. 10, 2021, 1 a.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 32.0 ppb (30) N/A N/A 12.0 μg/m3 (50) 50.0
 
Feb. 10, 2021, midnight N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 33.0 ppb (31) N/A N/A 14.7 μg/m3 (57) 57.0
 
Feb. 9, 2021, 11 p.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 35.0 ppb (33) N/A N/A 17.4 μg/m3 (63) 63.0
 
Feb. 9, 2021, 10 p.m. N/A N/A N/A 6.0 ppb (6) N/A 0.0 ppb (0) 34.0 ppb (32) N/A N/A 17.9 μg/m3 (64) 64.0
 
Feb. 9, 2021, 9 p.m. N/A N/A N/A 6.0 ppb (6) N/A 1.0 ppb (2) 33.0 ppb (31) N/A N/A 14.4 μg/m3 (56) 56.0
 
Feb. 9, 2021, 8 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 33.0 ppb (31) N/A N/A 4.8 μg/m3 (20) 31.0
 
Feb. 9, 2021, 7 p.m. N/A N/A N/A 4.0 ppb (4) N/A 0.0 ppb (0) 32.0 ppb (30) N/A N/A 4.6 μg/m3 (20) 30.0
 
Feb. 9, 2021, 6 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 31.0 ppb (29) N/A N/A 5.9 μg/m3 (25) 29.0
 
Feb. 9, 2021, 5 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 29.0 ppb (27) N/A N/A 7.9 μg/m3 (33) 33.0
 
Feb. 9, 2021, 4 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 28.0 ppb (26) N/A N/A 9.5 μg/m3 (40) 40.0
 
Feb. 9, 2021, 3 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 28.0 ppb (26) N/A N/A 8.9 μg/m3 (38) 38.0
 
Feb. 9, 2021, 2 p.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 28.0 ppb (26) N/A N/A 11.3 μg/m3 (48) 48.0
 
Feb. 9, 2021, 1 p.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 28.0 ppb (26) N/A N/A 8.8 μg/m3 (37) 37.0
 
Feb. 9, 2021, noon N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 28.0 ppb (26) N/A N/A 9.4 μg/m3 (40) 40.0
 
Feb. 9, 2021, 11 a.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 27.0 ppb (25) N/A N/A 7.9 μg/m3 (33) 33.0
 
Feb. 9, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 7.8 μg/m3 (33) 33.0
 
Feb. 9, 2021, 9 a.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 27.0 ppb (25) N/A N/A 7.9 μg/m3 (33) 33.0
 
Feb. 9, 2021, 8 a.m. N/A N/A N/A 4.0 ppb (4) N/A 0.0 ppb (0) 27.0 ppb (25) N/A N/A 9.0 μg/m3 (38) 38.0
 
Feb. 9, 2021, 7 a.m. N/A N/A N/A 4.0 ppb (4) N/A 0.0 ppb (0) 28.0 ppb (26) N/A N/A 8.0 μg/m3 (34) 34.0
 
Feb. 9, 2021, 6 a.m. N/A N/A N/A 4.0 ppb (4) N/A 0.0 ppb (0) 28.0 ppb (26) N/A N/A 7.8 μg/m3 (33) 33.0
 
Feb. 9, 2021, 5 a.m. N/A N/A N/A 4.0 ppb (4) N/A 0.0 ppb (0) 29.0 ppb (27) N/A N/A 8.3 μg/m3 (35) 35.0
 
Feb. 9, 2021, 4 a.m. N/A N/A N/A 4.0 ppb (4) N/A 0.0 ppb (0) 31.0 ppb (29) N/A N/A 7.4 μg/m3 (31) 31.0
 
Feb. 9, 2021, 3 a.m. N/A N/A N/A 7.0 ppb (7) N/A 0.0 ppb (0) 30.0 ppb (28) N/A N/A 14.0 μg/m3 (55) 55.0
 
Feb. 9, 2021, 2 a.m. N/A N/A N/A 8.0 ppb (8) N/A 0.0 ppb (0) 30.0 ppb (28) N/A N/A 18.9 μg/m3 (66) 66.0
 
Feb. 9, 2021, 1 a.m. N/A N/A N/A 6.0 ppb (6) N/A 0.0 ppb (0) 30.0 ppb (28) N/A N/A 9.2 μg/m3 (39) 39.0
 
Feb. 9, 2021, midnight N/A N/A N/A 6.0 ppb (6) N/A 0.0 ppb (0) 30.0 ppb (28) N/A N/A 8.2 μg/m3 (35) 35.0
 
Feb. 8, 2021, 11 p.m. N/A N/A N/A 4.0 ppb (4) N/A 0.0 ppb (0) 32.0 ppb (30) N/A N/A 7.0 μg/m3 (30) 30.0
 
Feb. 8, 2021, 10 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 35.0 ppb (33) N/A N/A 3.9 μg/m3 (17) 33.0
 
Feb. 8, 2021, 9 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 35.0 ppb (33) N/A N/A 4.6 μg/m3 (20) 33.0
 
Feb. 8, 2021, 8 p.m. N/A N/A N/A 2.0 ppb (2) N/A 1.0 ppb (2) 34.0 ppb (32) N/A N/A 6.6 μg/m3 (28) 32.0
 
Feb. 8, 2021, 7 p.m. N/A N/A N/A 2.0 ppb (2) N/A 1.0 ppb (2) 31.0 ppb (29) N/A N/A 9.2 μg/m3 (39) 39.0
 
Feb. 8, 2021, 6 p.m. N/A N/A N/A 3.0 ppb (3) N/A 1.0 ppb (2) 30.0 ppb (28) N/A N/A 9.5 μg/m3 (40) 40.0
 
Feb. 8, 2021, 5 p.m. N/A N/A N/A 3.0 ppb (3) N/A 1.0 ppb (2) 28.0 ppb (26) N/A N/A 9.4 μg/m3 (40) 40.0
 
Feb. 8, 2021, 4 p.m. N/A N/A N/A 7.0 ppb (7) N/A 1.0 ppb (2) 24.0 ppb (23) N/A N/A 11.1 μg/m3 (47) 47.0
 
Feb. 8, 2021, 3 p.m. N/A N/A N/A 6.0 ppb (6) N/A 1.0 ppb (2) 24.0 ppb (23) N/A N/A 12.5 μg/m3 (52) 52.0
 
Feb. 8, 2021, 2 p.m. N/A N/A N/A 7.0 ppb (7) N/A 1.0 ppb (2) 23.0 ppb (22) N/A N/A 12.8 μg/m3 (53) 53.0
 
Feb. 8, 2021, 1 p.m. N/A N/A N/A 6.0 ppb (6) N/A 0.0 ppb (0) 23.0 ppb (22) N/A N/A 11.6 μg/m3 (49) 49.0
 
Feb. 8, 2021, noon N/A N/A N/A 6.0 ppb (6) N/A 0.0 ppb (0) 25.0 ppb (24) N/A N/A 11.1 μg/m3 (47) 47.0
 
Feb. 8, 2021, 11 a.m. N/A N/A N/A 6.0 ppb (6) N/A 0.0 ppb (0) 25.0 ppb (24) N/A N/A 13.7 μg/m3 (55) 55.0
 
Feb. 8, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 16.4 μg/m3 (61) 61.0
 
Feb. 8, 2021, 9 a.m. N/A N/A N/A 7.0 ppb (7) N/A 0.0 ppb (0) 23.0 ppb (22) N/A N/A 18.6 μg/m3 (65) 65.0
 
Feb. 8, 2021, 8 a.m. N/A N/A N/A 5.0 ppb (5) N/A 0.0 ppb (0) 24.0 ppb (23) N/A N/A 22.2 μg/m3 (73) 73.0
 
Feb. 8, 2021, 7 a.m. N/A N/A N/A 6.0 ppb (6) N/A 0.0 ppb (0) 25.0 ppb (24) N/A N/A 17.5 μg/m3 (63) 63.0
 
Feb. 8, 2021, 6 a.m. N/A N/A N/A 6.0 ppb (6) N/A 0.0 ppb (0) 25.0 ppb (24) N/A N/A 13.5 μg/m3 (54) 54.0
 
Feb. 8, 2021, 5 a.m. N/A N/A N/A 7.0 ppb (7) N/A 0.0 ppb (0) 24.0 ppb (23) N/A N/A 11.8 μg/m3 (50) 50.0
 
Feb. 8, 2021, 4 a.m. N/A N/A N/A 8.0 ppb (8) N/A 0.0 ppb (0) 24.0 ppb (23) N/A N/A 10.7 μg/m3 (45) 45.0
 
Feb. 8, 2021, 3 a.m. N/A N/A N/A 10.0 ppb (10) N/A 0.0 ppb (0) 23.0 ppb (22) N/A N/A 13.6 μg/m3 (55) 55.0
 
Feb. 8, 2021, 2 a.m. N/A N/A N/A 7.0 ppb (7) N/A 0.0 ppb (0) 26.0 ppb (25) N/A N/A 10.4 μg/m3 (44) 44.0
 
Feb. 8, 2021, 1 a.m. N/A N/A N/A 7.0 ppb (7) N/A 0.0 ppb (0) 26.0 ppb (25) N/A N/A 16.9 μg/m3 (62) 62.0
 
Feb. 8, 2021, midnight N/A N/A N/A 7.0 ppb (7) N/A 0.0 ppb (0) 27.0 ppb (25) N/A N/A 23.9 μg/m3 (76) 76.0
 
Feb. 7, 2021, 11 p.m. N/A N/A N/A 8.0 ppb (8) N/A 0.0 ppb (0) 27.0 ppb (25) N/A N/A 27.1 μg/m3 (83) 83.0
 
Feb. 7, 2021, 10 p.m. N/A N/A N/A 5.0 ppb (5) N/A 0.0 ppb (0) 30.0 ppb (28) N/A N/A 27.5 μg/m3 (84) 84.0
 
Feb. 7, 2021, 9 p.m. N/A N/A N/A 4.0 ppb (4) N/A 0.0 ppb (0) 29.0 ppb (27) N/A N/A 24.2 μg/m3 (77) 77.0
 
Feb. 7, 2021, 8 p.m. N/A N/A N/A 4.0 ppb (4) N/A 0.0 ppb (0) 28.0 ppb (26) N/A N/A 26.4 μg/m3 (82) 82.0
 
Feb. 7, 2021, 7 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 31.0 ppb (29) N/A N/A 44.6 μg/m3 (124) 124.0
 
Feb. 7, 2021, 6 p.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 67.6 μg/m3 (158) 158.0
 
Feb. 7, 2021, 5 p.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 67.1 μg/m3 (157) 157.0
 
Feb. 7, 2021, 4 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 32.0 ppb (30) N/A N/A 44.8 μg/m3 (124) 124.0
 
Feb. 7, 2021, 3 p.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 31.0 ppb (29) N/A N/A 72.1 μg/m3 (160) 160.0
 
Feb. 7, 2021, 2 p.m. N/A N/A N/A 4.0 ppb (4) N/A 0.0 ppb (0) 29.0 ppb (27) N/A N/A 87.5 μg/m3 (168) 168.0
 
Feb. 7, 2021, 1 p.m. N/A N/A N/A 4.0 ppb (4) N/A 0.0 ppb (0) 26.0 ppb (25) N/A N/A N/A 25.0
 
Feb. 7, 2021, noon N/A N/A N/A 6.0 ppb (6) N/A 0.0 ppb (0) 31.0 ppb (29) N/A N/A 144.3 μg/m3 (197) 197.0