AQSQID: 000102701

Site Name: Williams Lake Columneetza School

Location: Williams Lake (Williams Lake Riv Valley Trl), CC

Reporting: True, Located: True

Current AQI: 21.0

Williams Lake (Williams Lake Riv Valley Trl) CC, CA: 52.1342, -122.1528

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
Jan. 17, 2020, 2 p.m. N/A 3.9 ppb (4) N/A 23.0 ppb (21) N/A N/A 7.0 ppb (5) N/A N/A N/A 21.0
 
Jan. 17, 2020, 1 p.m. N/A 6.2 ppb (6) N/A 25.0 ppb (23) N/A N/A 5.0 ppb (4) N/A N/A N/A 23.0
 
Jan. 17, 2020, 11 a.m. N/A 0.7 ppb (1) N/A 10.0 ppb (9) N/A N/A 19.0 ppb (15) N/A N/A N/A 15.0
 
Jan. 17, 2020, 10 a.m. N/A 0.2 ppb (0) N/A 5.0 ppb (5) N/A N/A 25.0 ppb (19) N/A N/A N/A 19.0
 
Jan. 17, 2020, 9 a.m. N/A 0.0 ppb (0) N/A 3.0 ppb (3) N/A N/A 27.0 ppb (21) N/A N/A N/A 21.0
 
Jan. 17, 2020, 7 a.m. N/A -0.3 ppb (0) N/A 4.0 ppb (4) N/A N/A 26.0 ppb (20) N/A N/A N/A 20.0
 
Jan. 17, 2020, 6 a.m. N/A -0.5 ppb (0) N/A 4.0 ppb (4) N/A N/A 27.0 ppb (21) N/A N/A N/A 21.0
 
Jan. 17, 2020, 5 a.m. N/A -0.1 ppb (0) N/A 7.0 ppb (6) N/A N/A 24.0 ppb (18) N/A N/A N/A 18.0
 
Jan. 17, 2020, 4 a.m. N/A -0.2 ppb (0) N/A 8.0 ppb (7) N/A N/A 23.0 ppb (18) N/A N/A N/A 18.0
 
Jan. 17, 2020, 3 a.m. N/A -0.2 ppb (0) N/A 4.0 ppb (4) N/A N/A 27.0 ppb (21) N/A N/A N/A 21.0
 
Jan. 17, 2020, 2 a.m. N/A -0.1 ppb (0) N/A 5.0 ppb (5) N/A N/A 27.0 ppb (21) N/A N/A N/A 21.0
 
Jan. 17, 2020, 1 a.m. N/A -0.2 ppb (0) N/A 4.0 ppb (4) N/A N/A 28.0 ppb (22) N/A N/A N/A 22.0
 
Jan. 17, 2020, midnight N/A 0.0 ppb (0) N/A 7.0 ppb (6) N/A N/A 25.0 ppb (19) N/A N/A N/A 19.0
 
Jan. 16, 2020, 11 p.m. N/A 0.4 ppb (0) N/A 6.0 ppb (6) N/A N/A 26.0 ppb (20) N/A N/A N/A 20.0
 
Jan. 16, 2020, 10 p.m. N/A 0.9 ppb (1) N/A 5.0 ppb (5) N/A N/A 27.0 ppb (21) N/A N/A N/A 21.0
 
Jan. 16, 2020, 9 p.m. N/A 1.9 ppb (2) N/A 6.0 ppb (6) N/A N/A 26.0 ppb (20) N/A N/A N/A 20.0
 
Jan. 16, 2020, 8 p.m. N/A 2.3 ppb (2) N/A 7.0 ppb (6) N/A N/A 25.0 ppb (19) N/A N/A N/A 19.0
 
Jan. 16, 2020, 7 p.m. N/A 3.7 ppb (3) N/A 9.0 ppb (8) N/A N/A 22.0 ppb (17) N/A N/A N/A 17.0
 
Jan. 16, 2020, 6 p.m. N/A 4.3 ppb (4) N/A 10.0 ppb (9) N/A N/A 20.0 ppb (15) N/A N/A N/A 15.0
 
Jan. 16, 2020, 5 p.m. N/A 3.0 ppb (3) N/A 11.0 ppb (10) N/A N/A 18.0 ppb (14) N/A N/A N/A 14.0
 
Jan. 16, 2020, 4 p.m. N/A 1.6 ppb (1) N/A 15.0 ppb (14) N/A N/A 14.0 ppb (11) N/A N/A N/A 14.0
 
Jan. 16, 2020, 3 p.m. N/A 0.1 ppb (0) N/A 15.0 ppb (14) N/A N/A 14.0 ppb (11) N/A N/A N/A 14.0
 
Jan. 16, 2020, 2 p.m. N/A 0.3 ppb (0) N/A 14.0 ppb (13) N/A N/A 15.0 ppb (12) N/A N/A N/A 13.0
 
Jan. 16, 2020, 1 p.m. N/A 0.0 ppb (0) N/A 13.0 ppb (12) N/A N/A 16.0 ppb (12) N/A N/A N/A 12.0
 
Jan. 16, 2020, noon N/A 0.3 ppb (0) N/A 14.0 ppb (13) N/A N/A 15.0 ppb (12) N/A N/A N/A 13.0
 
Jan. 16, 2020, 10 a.m. N/A 0.1 ppb (0) N/A 14.0 ppb (13) N/A N/A 14.0 ppb (11) N/A N/A N/A 13.0
 
Jan. 16, 2020, 9 a.m. N/A -0.2 ppb (0) N/A 10.0 ppb (9) N/A N/A 18.0 ppb (14) N/A N/A N/A 14.0
 
Jan. 16, 2020, 8 a.m. N/A -0.5 ppb (0) N/A 8.0 ppb (7) N/A N/A 20.0 ppb (15) N/A N/A N/A 15.0
 
Jan. 16, 2020, 7 a.m. N/A -0.2 ppb (0) N/A 8.0 ppb (7) N/A N/A 20.0 ppb (15) N/A N/A N/A 15.0
 
Jan. 16, 2020, 6 a.m. N/A -0.4 ppb (0) N/A 7.0 ppb (6) N/A N/A 22.0 ppb (17) N/A N/A N/A 17.0
 
Jan. 16, 2020, 5 a.m. N/A -0.1 ppb (0) N/A 9.0 ppb (8) N/A N/A 20.0 ppb (15) N/A N/A N/A 15.0
 
Jan. 16, 2020, 4 a.m. N/A 0.0 ppb (0) N/A 10.0 ppb (9) N/A N/A 20.0 ppb (15) N/A N/A N/A 15.0
 
Jan. 16, 2020, 3 a.m. N/A 0.9 ppb (1) N/A 11.0 ppb (10) N/A N/A 19.0 ppb (15) N/A N/A N/A 15.0
 
Jan. 16, 2020, 2 a.m. N/A -0.2 ppb (0) N/A 8.0 ppb (7) N/A N/A 22.0 ppb (17) N/A N/A N/A 17.0
 
Jan. 16, 2020, 1 a.m. N/A -0.1 ppb (0) N/A 9.0 ppb (8) N/A N/A 20.0 ppb (15) N/A N/A N/A 15.0
 
Jan. 16, 2020, midnight N/A 0.2 ppb (0) N/A 8.0 ppb (7) N/A N/A 20.0 ppb (15) N/A N/A N/A 15.0
 
Jan. 15, 2020, 11 p.m. N/A 0.6 ppb (1) N/A 6.0 ppb (6) N/A N/A 23.0 ppb (18) N/A N/A N/A 18.0
 
Jan. 15, 2020, 10 p.m. N/A 1.7 ppb (2) N/A 5.0 ppb (5) N/A N/A 24.0 ppb (18) N/A N/A N/A 18.0
 
Jan. 15, 2020, 9 p.m. N/A 1.4 ppb (1) N/A 4.0 ppb (4) N/A N/A 26.0 ppb (20) N/A N/A N/A 20.0
 
Jan. 15, 2020, 8 p.m. N/A 0.8 ppb (1) N/A 3.0 ppb (3) N/A N/A 27.0 ppb (21) N/A N/A N/A 21.0
 
Jan. 15, 2020, 7 p.m. N/A 1.5 ppb (1) N/A 4.0 ppb (4) N/A N/A 26.0 ppb (20) N/A N/A N/A 20.0
 
Jan. 15, 2020, 6 p.m. N/A 1.3 ppb (1) N/A 3.0 ppb (3) N/A N/A 25.0 ppb (19) N/A N/A N/A 19.0
 
Jan. 15, 2020, 5 p.m. N/A 0.9 ppb (1) N/A 4.0 ppb (4) N/A N/A 24.0 ppb (18) N/A N/A N/A 18.0
 
Jan. 15, 2020, 4 p.m. N/A 0.7 ppb (1) N/A 7.0 ppb (6) N/A N/A 21.0 ppb (16) N/A N/A N/A 16.0
 
Jan. 15, 2020, 3 p.m. N/A -0.2 ppb (0) N/A 6.0 ppb (6) N/A N/A 22.0 ppb (17) N/A N/A N/A 17.0
 
Jan. 15, 2020, 2 p.m. N/A 0.0 ppb (0) N/A 6.0 ppb (6) N/A N/A 22.0 ppb (17) N/A N/A N/A 17.0
 
Jan. 15, 2020, 1 p.m. N/A 0.0 ppb (0) N/A 10.0 ppb (9) N/A N/A 18.0 ppb (14) N/A N/A N/A 14.0
 
Jan. 15, 2020, noon N/A 0.9 ppb (1) N/A 17.0 ppb (16) N/A N/A 10.0 ppb (8) N/A N/A N/A 16.0
 
Jan. 15, 2020, 11 a.m. N/A 5.4 ppb (5) N/A 27.0 ppb (25) N/A N/A 3.0 ppb (2) N/A N/A N/A 25.0
 
Jan. 15, 2020, 9 a.m. N/A 3.4 ppb (3) N/A 26.0 ppb (24) N/A N/A 4.0 ppb (3) N/A N/A 2.3 μg/m3 (10) 24.0
 
Jan. 15, 2020, 8 a.m. N/A 6.0 ppb (6) N/A 28.0 ppb (26) N/A N/A 3.0 ppb (2) N/A N/A 2.4 μg/m3 (10) 26.0
 
Jan. 15, 2020, 7 a.m. N/A 7.3 ppb (7) N/A 30.0 ppb (28) N/A N/A 2.0 ppb (2) N/A N/A 2.4 μg/m3 (10) 28.0
 
Jan. 15, 2020, 6 a.m. N/A 14.0 ppb (13) N/A 32.0 ppb (30) N/A N/A 1.0 ppb (1) N/A N/A 1.9 μg/m3 (8) 30.0
 
Jan. 15, 2020, 5 a.m. N/A 16.2 ppb (15) N/A 32.0 ppb (30) N/A N/A 2.0 ppb (2) N/A N/A 2.9 μg/m3 (12) 30.0
 
Jan. 15, 2020, 4 a.m. N/A 11.9 ppb (11) N/A 32.0 ppb (30) N/A N/A 2.0 ppb (2) N/A N/A 4.0 μg/m3 (17) 30.0
 
Jan. 15, 2020, 3 a.m. N/A 14.1 ppb (13) N/A 33.0 ppb (31) N/A N/A 2.0 ppb (2) N/A N/A 118.9 μg/m3 (183) 183.0
 
Jan. 15, 2020, 2 a.m. N/A 16.8 ppb (16) N/A 32.0 ppb (30) N/A N/A 3.0 ppb (2) N/A N/A 319.2 μg/m3 (369) 369.0
 
Jan. 15, 2020, 1 a.m. N/A 35.9 ppb (33) N/A 37.0 ppb (34) N/A N/A 3.0 ppb (2) N/A N/A N/A 34.0
 
Jan. 15, 2020, midnight N/A 6.1 ppb (6) N/A 25.0 ppb (23) N/A N/A 8.0 ppb (6) N/A N/A N/A 23.0
 
Jan. 14, 2020, 11 p.m. N/A 9.9 ppb (9) N/A 21.0 ppb (19) N/A N/A 14.0 ppb (11) N/A N/A 20.6 μg/m3 (68) 68.0
 
Jan. 14, 2020, 10 p.m. N/A 9.2 ppb (9) N/A 15.0 ppb (14) N/A N/A 19.0 ppb (15) N/A N/A 1.9 μg/m3 (8) 15.0
 
Jan. 14, 2020, 9 p.m. N/A 9.7 ppb (9) N/A 11.0 ppb (10) N/A N/A 20.0 ppb (15) N/A N/A 4.9 μg/m3 (20) 20.0
 
Jan. 14, 2020, 8 p.m. N/A 10.2 ppb (9) N/A 11.0 ppb (10) N/A N/A 19.0 ppb (15) N/A N/A 93.1 μg/m3 (170) 170.0
 
Jan. 14, 2020, 7 p.m. N/A 8.0 ppb (7) N/A 9.0 ppb (8) N/A N/A 19.0 ppb (15) N/A N/A 19.8 μg/m3 (67) 67.0
 
Jan. 14, 2020, 6 p.m. N/A 12.2 ppb (11) N/A 14.0 ppb (13) N/A N/A 16.0 ppb (12) N/A N/A 2.6 μg/m3 (11) 13.0
 
Jan. 14, 2020, 5 p.m. N/A 14.1 ppb (13) N/A 19.0 ppb (18) N/A N/A 11.0 ppb (8) N/A N/A N/A 18.0
 
Jan. 14, 2020, 4 p.m. N/A 5.9 ppb (5) N/A 20.0 ppb (19) N/A N/A 8.0 ppb (6) N/A N/A N/A 19.0
 
Jan. 14, 2020, 3 p.m. N/A 1.8 ppb (2) N/A 18.0 ppb (17) N/A N/A 10.0 ppb (8) N/A N/A N/A 17.0
 
Jan. 14, 2020, 2 p.m. N/A 1.6 ppb (1) N/A 18.0 ppb (17) N/A N/A 9.0 ppb (7) N/A N/A N/A 17.0
 
Jan. 14, 2020, 1 p.m. N/A 0.7 ppb (1) N/A 15.0 ppb (14) N/A N/A 12.0 ppb (9) N/A N/A N/A 14.0
 
Jan. 14, 2020, noon N/A 0.9 ppb (1) N/A 17.0 ppb (16) N/A N/A 12.0 ppb (9) N/A N/A N/A 16.0
 
Jan. 14, 2020, 11 a.m. N/A 1.3 ppb (1) N/A 21.0 ppb (19) N/A N/A 8.0 ppb (6) N/A N/A N/A 19.0
 
Jan. 14, 2020, 10 a.m. N/A 0.7 ppb (1) N/A 17.0 ppb (16) N/A N/A 12.0 ppb (9) N/A N/A N/A 16.0
 
Jan. 14, 2020, 9 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 34.3 μg/m3 (97) 97.0
 
Jan. 14, 2020, 8 a.m. N/A 1.4 ppb (1) N/A 22.0 ppb (20) N/A N/A 9.0 ppb (7) N/A N/A 12.0 μg/m3 (50) 50.0
 
Jan. 14, 2020, 7 a.m. N/A 5.4 ppb (5) N/A 29.0 ppb (27) N/A N/A 4.0 ppb (3) N/A N/A 12.3 μg/m3 (51) 51.0
 
Jan. 14, 2020, 6 a.m. N/A 8.2 ppb (8) N/A 32.0 ppb (30) N/A N/A 2.0 ppb (2) N/A N/A 11.9 μg/m3 (50) 50.0
 
Jan. 14, 2020, 5 a.m. N/A 16.7 ppb (15) N/A 34.0 ppb (31) N/A N/A 1.0 ppb (1) N/A N/A 7.5 μg/m3 (31) 31.0
 
Jan. 14, 2020, 4 a.m. N/A 20.7 ppb (19) N/A 37.0 ppb (34) N/A N/A 1.0 ppb (1) N/A N/A 10.1 μg/m3 (42) 42.0
 
Jan. 14, 2020, 3 a.m. N/A 12.7 ppb (12) N/A 34.0 ppb (31) N/A N/A 3.0 ppb (2) N/A N/A 11.4 μg/m3 (48) 48.0
 
Jan. 14, 2020, 2 a.m. N/A 4.5 ppb (4) N/A 28.0 ppb (26) N/A N/A 7.0 ppb (5) N/A N/A 4.3 μg/m3 (18) 26.0
 
Jan. 14, 2020, 1 a.m. N/A 5.4 ppb (5) N/A 32.0 ppb (30) N/A N/A 6.0 ppb (5) N/A N/A 5.6 μg/m3 (23) 30.0
 
Jan. 14, 2020, midnight N/A 10.8 ppb (10) N/A 35.0 ppb (32) N/A N/A 5.0 ppb (4) N/A N/A 6.4 μg/m3 (27) 32.0
 
Jan. 13, 2020, 11 p.m. N/A 7.2 ppb (7) N/A 21.0 ppb (19) N/A N/A 17.0 ppb (13) N/A N/A 4.7 μg/m3 (20) 20.0
 
Jan. 13, 2020, 10 p.m. N/A 5.1 ppb (5) N/A 13.0 ppb (12) N/A N/A 25.0 ppb (19) N/A N/A 4.7 μg/m3 (20) 20.0
 
Jan. 13, 2020, 9 p.m. N/A 6.6 ppb (6) N/A 12.0 ppb (11) N/A N/A 26.0 ppb (20) N/A N/A 3.7 μg/m3 (15) 20.0
 
Jan. 13, 2020, 8 p.m. N/A 7.7 ppb (7) N/A 11.0 ppb (10) N/A N/A 25.0 ppb (19) N/A N/A 3.8 μg/m3 (16) 19.0
 
Jan. 13, 2020, 7 p.m. N/A 10.1 ppb (9) N/A 13.0 ppb (12) N/A N/A 23.0 ppb (18) N/A N/A 4.3 μg/m3 (18) 18.0
 
Jan. 13, 2020, 6 p.m. N/A 12.8 ppb (12) N/A 17.0 ppb (16) N/A N/A 18.0 ppb (14) N/A N/A 6.0 μg/m3 (25) 25.0
 
Jan. 13, 2020, 5 p.m. N/A 25.4 ppb (24) N/A 28.0 ppb (26) N/A N/A 10.0 ppb (8) N/A N/A 7.7 μg/m3 (32) 32.0
 
Jan. 13, 2020, 4 p.m. N/A 21.2 ppb (20) N/A 35.0 ppb (32) N/A N/A 3.0 ppb (2) N/A N/A 4.5 μg/m3 (19) 32.0
 
Jan. 13, 2020, 3 p.m. N/A 27.4 ppb (25) N/A 38.0 ppb (35) N/A N/A 1.0 ppb (1) N/A N/A 5.9 μg/m3 (25) 35.0
 
Jan. 13, 2020, 2 p.m. N/A 3.3 ppb (3) N/A 19.0 ppb (18) N/A N/A 16.0 ppb (12) N/A N/A 7.2 μg/m3 (30) 30.0
 
Jan. 13, 2020, 1 p.m. N/A 0.4 ppb (0) N/A 7.0 ppb (6) N/A N/A 30.0 ppb (23) N/A N/A 4.0 μg/m3 (17) 23.0
 
Jan. 13, 2020, noon N/A 0.0 ppb (0) N/A 9.0 ppb (8) N/A N/A 28.0 ppb (22) N/A N/A 5.5 μg/m3 (23) 23.0
 
Jan. 13, 2020, 11 a.m. N/A 0.8 ppb (1) N/A 6.0 ppb (6) N/A N/A 31.0 ppb (24) N/A N/A 2.0 μg/m3 (8) 24.0
 
Jan. 13, 2020, 10 a.m. N/A 0.5 ppb (0) N/A 5.0 ppb (5) N/A N/A 32.0 ppb (25) N/A N/A 2.6 μg/m3 (11) 25.0
 
Jan. 13, 2020, 9 a.m. N/A 0.6 ppb (1) N/A 6.0 ppb (6) N/A N/A 32.0 ppb (25) N/A N/A 5.2 μg/m3 (22) 25.0
 
Jan. 13, 2020, 8 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 4.5 μg/m3 (19) 19.0
 
Jan. 13, 2020, 7 a.m. N/A -0.3 ppb (0) N/A 1.0 ppb (1) N/A N/A 37.0 ppb (28) N/A N/A 1.8 μg/m3 (8) 28.0
 
Jan. 13, 2020, 6 a.m. N/A -0.4 ppb (0) N/A 1.0 ppb (1) N/A N/A 37.0 ppb (28) N/A N/A 2.0 μg/m3 (8) 28.0
 
Jan. 13, 2020, 5 a.m. N/A -0.3 ppb (0) N/A 1.0 ppb (1) N/A N/A 37.0 ppb (28) N/A N/A 2.8 μg/m3 (12) 28.0
 
Jan. 13, 2020, 4 a.m. N/A -0.3 ppb (0) N/A 1.0 ppb (1) N/A N/A 37.0 ppb (28) N/A N/A 2.2 μg/m3 (9) 28.0
 
Jan. 13, 2020, 3 a.m. N/A -0.3 ppb (0) N/A 1.0 ppb (1) N/A N/A 36.0 ppb (28) N/A N/A 3.0 μg/m3 (12) 28.0
 
Jan. 13, 2020, 2 a.m. N/A -0.5 ppb (0) N/A 2.0 ppb (2) N/A N/A 36.0 ppb (28) N/A N/A 4.1 μg/m3 (17) 28.0
 
Jan. 13, 2020, 1 a.m. N/A -0.6 ppb (0) N/A 2.0 ppb (2) N/A N/A 37.0 ppb (28) N/A N/A 3.8 μg/m3 (16) 28.0
 
Jan. 13, 2020, midnight N/A -0.4 ppb (0) N/A 2.0 ppb (2) N/A N/A 37.0 ppb (28) N/A N/A 4.3 μg/m3 (18) 28.0
 
Jan. 12, 2020, 11 p.m. N/A -0.3 ppb (0) N/A 2.0 ppb (2) N/A N/A 36.0 ppb (28) N/A N/A 3.3 μg/m3 (14) 28.0
 
Jan. 12, 2020, 10 p.m. N/A 0.0 ppb (0) N/A 2.0 ppb (2) N/A N/A 36.0 ppb (28) N/A N/A 2.5 μg/m3 (10) 28.0
 
Jan. 12, 2020, 9 p.m. N/A 0.0 ppb (0) N/A 2.0 ppb (2) N/A N/A 36.0 ppb (28) N/A N/A 2.6 μg/m3 (11) 28.0
 
Jan. 12, 2020, 8 p.m. N/A 0.4 ppb (0) N/A 2.0 ppb (2) N/A N/A 36.0 ppb (28) N/A N/A 2.7 μg/m3 (11) 28.0
 
Jan. 12, 2020, 7 p.m. N/A -0.2 ppb (0) N/A 1.0 ppb (1) N/A N/A 36.0 ppb (28) N/A N/A 2.5 μg/m3 (10) 28.0
 
Jan. 12, 2020, 6 p.m. N/A -0.2 ppb (0) N/A 1.0 ppb (1) N/A N/A 36.0 ppb (28) N/A N/A 2.5 μg/m3 (10) 28.0
 
Jan. 12, 2020, 5 p.m. N/A -0.4 ppb (0) N/A 1.0 ppb (1) N/A N/A 36.0 ppb (28) N/A N/A 3.7 μg/m3 (15) 28.0
 
Jan. 12, 2020, 4 p.m. N/A -0.5 ppb (0) N/A 1.0 ppb (1) N/A N/A 35.0 ppb (27) N/A N/A 5.6 μg/m3 (23) 27.0
 
Jan. 12, 2020, 3 p.m. N/A -0.4 ppb (0) N/A 1.0 ppb (1) N/A N/A 34.0 ppb (26) N/A N/A 5.3 μg/m3 (22) 26.0
 
Jan. 12, 2020, 2 p.m. N/A -0.3 ppb (0) N/A 1.0 ppb (1) N/A N/A 33.0 ppb (25) N/A N/A 2.5 μg/m3 (10) 25.0
 
Jan. 12, 2020, 1 p.m. N/A -0.3 ppb (0) N/A 2.0 ppb (2) N/A N/A 31.0 ppb (24) N/A N/A 2.7 μg/m3 (11) 24.0
 
Jan. 12, 2020, noon N/A -0.4 ppb (0) N/A 2.0 ppb (2) N/A N/A 30.0 ppb (23) N/A N/A 2.0 μg/m3 (8) 23.0
 
Jan. 12, 2020, 11 a.m. N/A -0.4 ppb (0) N/A 2.0 ppb (2) N/A N/A 28.0 ppb (22) N/A N/A 2.9 μg/m3 (12) 22.0
 
Jan. 12, 2020, 10 a.m. N/A -0.4 ppb (0) N/A 2.0 ppb (2) N/A N/A 28.0 ppb (22) N/A N/A 3.3 μg/m3 (14) 22.0
 
Jan. 12, 2020, 9 a.m. N/A -0.3 ppb (0) N/A 2.0 ppb (2) N/A N/A 27.0 ppb (21) N/A N/A 4.0 μg/m3 (17) 21.0
 
Jan. 12, 2020, 8 a.m. N/A -0.4 ppb (0) N/A 3.0 ppb (3) N/A N/A 25.0 ppb (19) N/A N/A 5.6 μg/m3 (23) 23.0
 
Jan. 12, 2020, 7 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 4.6 μg/m3 (19) 19.0
 
Jan. 12, 2020, 6 a.m. N/A -0.3 ppb (0) N/A 3.0 ppb (3) N/A N/A 24.0 ppb (18) N/A N/A 4.4 μg/m3 (18) 18.0
 
Jan. 12, 2020, 5 a.m. N/A -0.1 ppb (0) N/A 3.0 ppb (3) N/A N/A 23.0 ppb (18) N/A N/A 5.6 μg/m3 (23) 23.0
 
Jan. 12, 2020, 4 a.m. N/A 0.0 ppb (0) N/A 3.0 ppb (3) N/A N/A 23.0 ppb (18) N/A N/A 4.5 μg/m3 (19) 19.0
 
Jan. 12, 2020, 3 a.m. N/A -0.2 ppb (0) N/A 2.0 ppb (2) N/A N/A 24.0 ppb (18) N/A N/A 4.3 μg/m3 (18) 18.0
 
Jan. 12, 2020, 2 a.m. N/A -0.2 ppb (0) N/A 3.0 ppb (3) N/A N/A 23.0 ppb (18) N/A N/A 4.6 μg/m3 (19) 19.0
 
Jan. 12, 2020, 1 a.m. N/A 0.2 ppb (0) N/A 3.0 ppb (3) N/A N/A 22.0 ppb (17) N/A N/A 5.0 μg/m3 (21) 21.0
 
Jan. 12, 2020, midnight N/A 0.1 ppb (0) N/A 3.0 ppb (3) N/A N/A 20.0 ppb (15) N/A N/A 5.3 μg/m3 (22) 22.0
 
Jan. 11, 2020, 11 p.m. N/A 0.8 ppb (1) N/A 3.0 ppb (3) N/A N/A 20.0 ppb (15) N/A N/A 3.5 μg/m3 (15) 15.0
 
Jan. 11, 2020, 10 p.m. N/A 1.4 ppb (1) N/A 3.0 ppb (3) N/A N/A 20.0 ppb (15) N/A N/A 3.7 μg/m3 (15) 15.0
 
Jan. 11, 2020, 9 p.m. N/A 2.7 ppb (3) N/A 4.0 ppb (4) N/A N/A 20.0 ppb (15) N/A N/A 4.6 μg/m3 (19) 19.0
 
Jan. 11, 2020, 8 p.m. N/A 3.1 ppb (3) N/A 6.0 ppb (6) N/A N/A 17.0 ppb (13) N/A N/A 6.8 μg/m3 (28) 28.0
 
Jan. 11, 2020, 7 p.m. N/A 11.6 ppb (11) N/A 15.0 ppb (14) N/A N/A 13.0 ppb (10) N/A N/A 4.6 μg/m3 (19) 19.0
 
Jan. 11, 2020, 6 p.m. N/A 8.3 ppb (8) N/A 14.0 ppb (13) N/A N/A 10.0 ppb (8) N/A N/A 10.8 μg/m3 (45) 45.0
 
Jan. 11, 2020, 5 p.m. N/A 3.2 ppb (3) N/A 13.0 ppb (12) N/A N/A 11.0 ppb (8) N/A N/A 6.7 μg/m3 (28) 28.0
 
Jan. 11, 2020, 4 p.m. N/A 1.2 ppb (1) N/A 15.0 ppb (14) N/A N/A 11.0 ppb (8) N/A N/A 9.2 μg/m3 (38) 38.0
 
Jan. 11, 2020, 3 p.m. N/A 0.1 ppb (0) N/A 10.0 ppb (9) N/A N/A 15.0 ppb (12) N/A N/A 4.6 μg/m3 (19) 19.0
 
Jan. 11, 2020, 2 p.m. N/A 0.0 ppb (0) N/A 10.0 ppb (9) N/A N/A 16.0 ppb (12) N/A N/A 4.5 μg/m3 (19) 19.0
 
Jan. 11, 2020, 1 p.m. N/A 0.3 ppb (0) N/A 15.0 ppb (14) N/A N/A 13.0 ppb (10) N/A N/A 3.5 μg/m3 (15) 15.0
 
Jan. 11, 2020, noon N/A -0.2 ppb (0) N/A 13.0 ppb (12) N/A N/A 14.0 ppb (11) N/A N/A 3.9 μg/m3 (16) 16.0
 
Jan. 11, 2020, 11 a.m. N/A -0.4 ppb (0) N/A 6.0 ppb (6) N/A N/A 22.0 ppb (17) N/A N/A 2.9 μg/m3 (12) 17.0
 
Jan. 11, 2020, 10 a.m. N/A -0.3 ppb (0) N/A 5.0 ppb (5) N/A N/A 24.0 ppb (18) N/A N/A 2.6 μg/m3 (11) 18.0
 
Jan. 11, 2020, 9 a.m. N/A -0.2 ppb (0) N/A 4.0 ppb (4) N/A N/A 24.0 ppb (18) N/A N/A 1.9 μg/m3 (8) 18.0
 
Jan. 11, 2020, 8 a.m. N/A -0.2 ppb (0) N/A 5.0 ppb (5) N/A N/A 25.0 ppb (19) N/A N/A 3.8 μg/m3 (16) 19.0
 
Jan. 11, 2020, 7 a.m. N/A -0.1 ppb (0) N/A 6.0 ppb (6) N/A N/A 27.0 ppb (21) N/A N/A 4.0 μg/m3 (17) 21.0
 
Jan. 11, 2020, 6 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
 
Jan. 11, 2020, 5 a.m. N/A -0.5 ppb (0) N/A 7.0 ppb (6) N/A N/A 26.0 ppb (20) N/A N/A 5.0 μg/m3 (21) 21.0
 
Jan. 11, 2020, 4 a.m. N/A -0.3 ppb (0) N/A 8.0 ppb (7) N/A N/A 25.0 ppb (19) N/A N/A 4.8 μg/m3 (20) 20.0
 
Jan. 11, 2020, 3 a.m. N/A -0.2 ppb (0) N/A 5.0 ppb (5) N/A N/A 30.0 ppb (23) N/A N/A 3.2 μg/m3 (13) 23.0
 
Jan. 11, 2020, 2 a.m. N/A -0.1 ppb (0) N/A 2.0 ppb (2) N/A N/A 34.0 ppb (26) N/A N/A 1.8 μg/m3 (8) 26.0
 
Jan. 11, 2020, 1 a.m. N/A 0.2 ppb (0) N/A 3.0 ppb (3) N/A N/A 34.0 ppb (26) N/A N/A 0.7 μg/m3 (3) 26.0
 
Jan. 11, 2020, midnight N/A 0.1 ppb (0) N/A 7.0 ppb (6) N/A N/A 31.0 ppb (24) N/A N/A 1.3 μg/m3 (5) 24.0
 
Jan. 10, 2020, 11 p.m. N/A -0.1 ppb (0) N/A 3.0 ppb (3) N/A N/A 35.0 ppb (27) N/A N/A 1.0 μg/m3 (4) 27.0
 
Jan. 10, 2020, 10 p.m. N/A 0.0 ppb (0) N/A 2.0 ppb (2) N/A N/A 37.0 ppb (28) N/A N/A 0.6 μg/m3 (2) 28.0
 
Jan. 10, 2020, 9 p.m. N/A 0.0 ppb (0) N/A 3.0 ppb (3) N/A N/A 36.0 ppb (28) N/A N/A 0.3 μg/m3 (1) 28.0
 
Jan. 10, 2020, 8 p.m. N/A 0.4 ppb (0) N/A 3.0 ppb (3) N/A N/A 35.0 ppb (27) N/A N/A 0.2 μg/m3 (1) 27.0
 
Jan. 10, 2020, 7 p.m. N/A 0.0 ppb (0) N/A 3.0 ppb (3) N/A N/A 34.0 ppb (26) N/A N/A 0.3 μg/m3 (1) 26.0
 
Jan. 10, 2020, 6 p.m. N/A -0.1 ppb (0) N/A 3.0 ppb (3) N/A N/A 33.0 ppb (25) N/A N/A 0.3 μg/m3 (1) 25.0
 
Jan. 10, 2020, 5 p.m. N/A -0.1 ppb (0) N/A 3.0 ppb (3) N/A N/A 31.0 ppb (24) N/A N/A 0.5 μg/m3 (2) 24.0
 
Jan. 10, 2020, 4 p.m. N/A 0.2 ppb (0) N/A 3.0 ppb (3) N/A N/A 30.0 ppb (23) N/A N/A 0.8 μg/m3 (3) 23.0
 
Jan. 10, 2020, 3 p.m. N/A 0.0 ppb (0) N/A 3.0 ppb (3) N/A N/A 30.0 ppb (23) N/A N/A 1.3 μg/m3 (5) 23.0
 
Jan. 10, 2020, 2 p.m. N/A 0.1 ppb (0) N/A 3.0 ppb (3) N/A N/A 31.0 ppb (24) N/A N/A 2.3 μg/m3 (10) 24.0
 
Jan. 10, 2020, 1 p.m. N/A 0.3 ppb (0) N/A 2.0 ppb (2) N/A N/A 31.0 ppb (24) N/A N/A 2.4 μg/m3 (10) 24.0
 
Jan. 10, 2020, noon N/A 0.4 ppb (0) N/A 2.0 ppb (2) N/A N/A 32.0 ppb (25) N/A N/A 2.3 μg/m3 (10) 25.0
 
Jan. 10, 2020, 11 a.m. N/A 0.8 ppb (1) N/A 2.0 ppb (2) N/A N/A 32.0 ppb (25) N/A N/A 1.8 μg/m3 (8) 25.0