ID: 1168

AQSQID: 000102701

Site Name: Williams Lake Columneetza School

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

Updated: Dec. 2, 2020, 7:40 a.m.

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

Reporting: True, Located: True

Current AQI: 45.0

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
Dec. 2, 2020, 6 a.m. N/A 30.8 ppb (30) N/A 12.0 ppb (12) N/A N/A 4.0 ppb (4) N/A N/A 10.6 μg/m3 (45) 45.0
 
Dec. 2, 2020, 5 a.m. N/A 37.5 ppb (36) N/A 15.0 ppb (15) N/A N/A 1.0 ppb (1) N/A N/A 12.4 μg/m3 (52) 52.0
 
Dec. 2, 2020, 4 a.m. N/A 38.5 ppb (37) N/A 17.0 ppb (17) N/A N/A 0.0 ppb (0) N/A N/A 16.8 μg/m3 (61) 61.0
 
Dec. 2, 2020, 3 a.m. N/A 37.9 ppb (36) N/A 18.0 ppb (17) N/A N/A -1.0 ppb (0) N/A N/A 18.3 μg/m3 (65) 65.0
 
Dec. 2, 2020, 2 a.m. N/A 38.2 ppb (37) N/A 19.0 ppb (18) N/A N/A 0.0 ppb (0) N/A N/A 21.6 μg/m3 (71) 71.0
 
Dec. 2, 2020, 1 a.m. N/A 34.3 ppb (33) N/A 19.0 ppb (18) N/A N/A 0.0 ppb (0) N/A N/A 15.4 μg/m3 (58) 58.0
 
Dec. 2, 2020, midnight N/A 30.6 ppb (29) N/A 19.0 ppb (18) N/A N/A 1.0 ppb (1) N/A N/A 15.4 μg/m3 (58) 58.0
 
Dec. 1, 2020, 11 p.m. N/A 26.7 ppb (26) N/A 14.0 ppb (14) N/A N/A 11.0 ppb (11) N/A N/A 12.3 μg/m3 (52) 52.0
 
Dec. 1, 2020, 10 p.m. N/A 26.4 ppb (25) N/A 9.0 ppb (9) N/A N/A 20.0 ppb (19) N/A N/A 6.0 μg/m3 (25) 25.0
 
Dec. 1, 2020, 9 p.m. N/A 27.5 ppb (26) N/A 8.0 ppb (8) N/A N/A 20.0 ppb (19) N/A N/A 3.6 μg/m3 (16) 26.0
 
Dec. 1, 2020, 8 p.m. N/A 27.7 ppb (27) N/A 9.0 ppb (9) N/A N/A 18.0 ppb (17) N/A N/A 3.1 μg/m3 (13) 27.0
 
Dec. 1, 2020, 7 p.m. N/A 27.0 ppb (26) N/A 8.0 ppb (8) N/A N/A 16.0 ppb (15) N/A N/A 3.3 μg/m3 (14) 26.0
 
Dec. 1, 2020, 6 p.m. N/A 26.3 ppb (25) N/A 8.0 ppb (8) N/A N/A 14.0 ppb (13) N/A N/A 1.7 μg/m3 (8) 25.0
 
Dec. 1, 2020, 5 p.m. N/A 28.4 ppb (27) N/A 11.0 ppb (11) N/A N/A 9.0 ppb (9) N/A N/A 2.7 μg/m3 (12) 27.0
 
Dec. 1, 2020, 4 p.m. N/A 28.4 ppb (27) N/A 13.0 ppb (13) N/A N/A 4.0 ppb (4) N/A N/A 7.2 μg/m3 (31) 31.0
 
Dec. 1, 2020, 3 p.m. N/A 31.4 ppb (30) N/A 16.0 ppb (16) N/A N/A 0.0 ppb (0) N/A N/A 4.5 μg/m3 (19) 30.0
 
Dec. 1, 2020, 2 p.m. N/A 26.8 ppb (26) N/A 16.0 ppb (16) N/A N/A 0.0 ppb (0) N/A N/A 4.0 μg/m3 (17) 26.0
 
Dec. 1, 2020, 1 p.m. N/A 21.1 ppb (20) N/A 13.0 ppb (13) N/A N/A 3.0 ppb (3) N/A N/A 3.3 μg/m3 (14) 20.0
 
Dec. 1, 2020, noon N/A 19.4 ppb (19) N/A 12.0 ppb (12) N/A N/A 5.0 ppb (5) N/A N/A 4.2 μg/m3 (18) 19.0
 
Dec. 1, 2020, 11 a.m. N/A 18.2 ppb (18) N/A 12.0 ppb (12) N/A N/A 6.0 ppb (6) N/A N/A 4.7 μg/m3 (20) 20.0
 
Dec. 1, 2020, 10 a.m. N/A 18.2 ppb (18) N/A 14.0 ppb (14) N/A N/A 6.0 ppb (6) N/A N/A 9.0 μg/m3 (38) 38.0
 
Dec. 1, 2020, 9 a.m. N/A 17.0 ppb (17) N/A 13.0 ppb (13) N/A N/A 9.0 ppb (9) N/A N/A 7.2 μg/m3 (31) 31.0
 
Dec. 1, 2020, 8 a.m. N/A 17.1 ppb (17) N/A 13.0 ppb (13) N/A N/A 11.0 ppb (11) N/A N/A 8.9 μg/m3 (38) 38.0
 
Dec. 1, 2020, 7 a.m. N/A 17.2 ppb (17) N/A 11.0 ppb (11) N/A N/A 18.0 ppb (17) N/A N/A 1.9 μg/m3 (8) 17.0
 
Dec. 1, 2020, 6 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 2.5 μg/m3 (11) 11.0
 
Dec. 1, 2020, 5 a.m. N/A 16.8 ppb (16) N/A 11.0 ppb (11) N/A N/A 21.0 ppb (20) N/A N/A 5.6 μg/m3 (24) 24.0
 
Dec. 1, 2020, 4 a.m. N/A 17.5 ppb (17) N/A 11.0 ppb (11) N/A N/A 22.0 ppb (21) N/A N/A 2.4 μg/m3 (10) 21.0
 
Dec. 1, 2020, 3 a.m. N/A 18.1 ppb (18) N/A 11.0 ppb (11) N/A N/A 23.0 ppb (22) N/A N/A 3.8 μg/m3 (16) 22.0
 
Dec. 1, 2020, 2 a.m. N/A 18.9 ppb (18) N/A 10.0 ppb (10) N/A N/A 27.0 ppb (25) N/A N/A 5.4 μg/m3 (23) 25.0
 
Dec. 1, 2020, 1 a.m. N/A 20.8 ppb (20) N/A 9.0 ppb (9) N/A N/A 28.0 ppb (26) N/A N/A 2.7 μg/m3 (12) 26.0
 
Dec. 1, 2020, midnight N/A 22.0 ppb (21) N/A 9.0 ppb (9) N/A N/A 31.0 ppb (29) N/A N/A 2.3 μg/m3 (10) 29.0
 
Nov. 30, 2020, 11 p.m. N/A 23.5 ppb (23) N/A 8.0 ppb (8) N/A N/A 32.0 ppb (30) N/A N/A 3.7 μg/m3 (16) 30.0
 
Nov. 30, 2020, 10 p.m. N/A 25.8 ppb (25) N/A 8.0 ppb (8) N/A N/A 33.0 ppb (31) N/A N/A 1.5 μg/m3 (7) 31.0
 
Nov. 30, 2020, 9 p.m. N/A 25.2 ppb (24) N/A 8.0 ppb (8) N/A N/A 31.0 ppb (29) N/A N/A 2.7 μg/m3 (12) 29.0
 
Nov. 30, 2020, 8 p.m. N/A 24.0 ppb (23) N/A 10.0 ppb (10) N/A N/A 26.0 ppb (25) N/A N/A 5.3 μg/m3 (23) 25.0
 
Nov. 30, 2020, 7 p.m. N/A 21.0 ppb (20) N/A 9.0 ppb (9) N/A N/A 28.0 ppb (26) N/A N/A 1.7 μg/m3 (8) 26.0
 
Nov. 30, 2020, 6 p.m. N/A 16.9 ppb (16) N/A 13.0 ppb (13) N/A N/A 20.0 ppb (19) N/A N/A 3.7 μg/m3 (16) 19.0
 
Nov. 30, 2020, 5 p.m. N/A 12.4 ppb (12) N/A 11.0 ppb (11) N/A N/A 25.0 ppb (24) N/A N/A 2.6 μg/m3 (11) 24.0
 
Nov. 30, 2020, 4 p.m. N/A 8.9 ppb (9) N/A 12.0 ppb (12) N/A N/A 26.0 ppb (25) N/A N/A 1.8 μg/m3 (8) 25.0
 
Nov. 30, 2020, 3 p.m. N/A 5.7 ppb (6) N/A 11.0 ppb (11) N/A N/A 31.0 ppb (29) N/A N/A 0.7 μg/m3 (3) 29.0
 
Nov. 30, 2020, 2 p.m. N/A 5.2 ppb (5) N/A 12.0 ppb (12) N/A N/A 32.0 ppb (30) N/A N/A 0.5 μg/m3 (3) 30.0
 
Nov. 30, 2020, 1 p.m. N/A 5.0 ppb (5) N/A 12.0 ppb (12) N/A N/A 32.0 ppb (30) N/A N/A 0.5 μg/m3 (3) 30.0
 
Nov. 30, 2020, noon N/A 5.0 ppb (5) N/A 11.0 ppb (11) N/A N/A 32.0 ppb (30) N/A N/A 0.6 μg/m3 (3) 30.0
 
Nov. 30, 2020, 11 a.m. N/A 4.5 ppb (5) N/A 11.0 ppb (11) N/A N/A 32.0 ppb (30) N/A N/A 0.6 μg/m3 (3) 30.0
 
Nov. 30, 2020, 10 a.m. N/A 4.1 ppb (4) N/A 11.0 ppb (11) N/A N/A 32.0 ppb (30) N/A N/A 0.6 μg/m3 (3) 30.0
 
Nov. 30, 2020, 9 a.m. N/A 4.4 ppb (5) N/A 12.0 ppb (12) N/A N/A 31.0 ppb (29) N/A N/A 0.7 μg/m3 (3) 29.0
 
Nov. 30, 2020, 8 a.m. N/A 4.9 ppb (5) N/A 11.0 ppb (11) N/A N/A 31.0 ppb (29) N/A N/A 0.8 μg/m3 (4) 29.0
 
Nov. 30, 2020, 7 a.m. N/A 5.8 ppb (6) N/A 11.0 ppb (11) N/A N/A 30.0 ppb (28) N/A N/A 0.9 μg/m3 (4) 28.0
 
Nov. 30, 2020, 6 a.m. N/A 5.7 ppb (6) N/A 10.0 ppb (10) N/A N/A 31.0 ppb (29) N/A N/A 0.8 μg/m3 (4) 29.0
 
Nov. 30, 2020, 5 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 0.8 μg/m3 (4) 4.0
 
Nov. 30, 2020, 4 a.m. N/A 5.6 ppb (6) N/A 11.0 ppb (11) N/A N/A 30.0 ppb (28) N/A N/A 1.1 μg/m3 (5) 28.0
 
Nov. 30, 2020, 3 a.m. N/A 4.9 ppb (5) N/A 10.0 ppb (10) N/A N/A 30.0 ppb (28) N/A N/A 1.5 μg/m3 (7) 28.0
 
Nov. 30, 2020, 2 a.m. N/A 4.2 ppb (4) N/A 11.0 ppb (11) N/A N/A 30.0 ppb (28) N/A N/A 1.0 μg/m3 (5) 28.0
 
Nov. 30, 2020, 1 a.m. N/A 4.4 ppb (5) N/A 11.0 ppb (11) N/A N/A 30.0 ppb (28) N/A N/A 1.0 μg/m3 (5) 28.0
 
Nov. 30, 2020, midnight N/A 5.2 ppb (5) N/A 12.0 ppb (12) N/A N/A 30.0 ppb (28) N/A N/A 1.0 μg/m3 (5) 28.0
 
Nov. 29, 2020, 11 p.m. N/A 6.8 ppb (7) N/A 11.0 ppb (11) N/A N/A 30.0 ppb (28) N/A N/A 2.4 μg/m3 (10) 28.0
 
Nov. 29, 2020, 10 p.m. N/A 6.7 ppb (7) N/A 11.0 ppb (11) N/A N/A 30.0 ppb (28) N/A N/A 1.5 μg/m3 (7) 28.0
 
Nov. 29, 2020, 9 p.m. N/A 7.1 ppb (7) N/A 11.0 ppb (11) N/A N/A 30.0 ppb (28) N/A N/A 1.4 μg/m3 (6) 28.0
 
Nov. 29, 2020, 8 p.m. N/A 7.4 ppb (7) N/A 11.0 ppb (11) N/A N/A 30.0 ppb (28) N/A N/A 0.8 μg/m3 (4) 28.0
 
Nov. 29, 2020, 7 p.m. N/A 9.2 ppb (9) N/A 11.0 ppb (11) N/A N/A 30.0 ppb (28) N/A N/A 1.4 μg/m3 (6) 28.0
 
Nov. 29, 2020, 6 p.m. N/A 10.4 ppb (10) N/A 10.0 ppb (10) N/A N/A 29.0 ppb (27) N/A N/A 0.9 μg/m3 (4) 27.0
 
Nov. 29, 2020, 5 p.m. N/A 11.6 ppb (11) N/A 11.0 ppb (11) N/A N/A 29.0 ppb (27) N/A N/A 0.7 μg/m3 (3) 27.0
 
Nov. 29, 2020, 4 p.m. N/A 16.4 ppb (16) N/A 10.0 ppb (10) N/A N/A 29.0 ppb (27) N/A N/A 0.6 μg/m3 (3) 27.0
 
Nov. 29, 2020, 3 p.m. N/A 18.9 ppb (18) N/A 8.0 ppb (8) N/A N/A 28.0 ppb (26) N/A N/A 0.9 μg/m3 (4) 26.0
 
Nov. 29, 2020, 2 p.m. N/A 18.3 ppb (18) N/A 8.0 ppb (8) N/A N/A 24.0 ppb (23) N/A N/A 2.3 μg/m3 (10) 23.0
 
Nov. 29, 2020, 1 p.m. N/A 22.5 ppb (22) N/A 7.0 ppb (7) N/A N/A 29.0 ppb (27) N/A N/A 3.0 μg/m3 (13) 27.0
 
Nov. 29, 2020, noon N/A 23.3 ppb (22) N/A 7.0 ppb (7) N/A N/A 20.0 ppb (19) N/A N/A 2.9 μg/m3 (13) 22.0
 
Nov. 29, 2020, 11 a.m. N/A 22.7 ppb (22) N/A 7.0 ppb (7) N/A N/A 16.0 ppb (15) N/A N/A 2.3 μg/m3 (10) 22.0
 
Nov. 29, 2020, 10 a.m. N/A 23.8 ppb (23) N/A 7.0 ppb (7) N/A N/A 17.0 ppb (16) N/A N/A 3.2 μg/m3 (14) 23.0
 
Nov. 29, 2020, 9 a.m. N/A 24.3 ppb (23) N/A 6.0 ppb (6) N/A N/A 19.0 ppb (18) N/A N/A 3.9 μg/m3 (17) 23.0
 
Nov. 29, 2020, 8 a.m. N/A 25.6 ppb (25) N/A 7.0 ppb (7) N/A N/A 17.0 ppb (16) N/A N/A 3.9 μg/m3 (17) 25.0
 
Nov. 29, 2020, 7 a.m. N/A 26.1 ppb (25) N/A 7.0 ppb (7) N/A N/A 15.0 ppb (14) N/A N/A 3.0 μg/m3 (13) 25.0
 
Nov. 29, 2020, 6 a.m. N/A 27.3 ppb (26) N/A 7.0 ppb (7) N/A N/A 16.0 ppb (15) N/A N/A 2.5 μg/m3 (11) 26.0
 
Nov. 29, 2020, 5 a.m. N/A 28.5 ppb (27) N/A 7.0 ppb (7) N/A N/A 12.0 ppb (12) N/A N/A 2.0 μg/m3 (9) 27.0
 
Nov. 29, 2020, 4 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 5.4 μg/m3 (23) 23.0
 
Nov. 29, 2020, 3 a.m. N/A 32.6 ppb (31) N/A 10.0 ppb (10) N/A N/A 5.0 ppb (5) N/A N/A 24.3 μg/m3 (77) 77.0
 
Nov. 29, 2020, 2 a.m. N/A 33.9 ppb (32) N/A 12.0 ppb (12) N/A N/A 1.0 ppb (1) N/A N/A 4.2 μg/m3 (18) 32.0
 
Nov. 29, 2020, 1 a.m. N/A 36.5 ppb (35) N/A 13.0 ppb (13) N/A N/A 0.0 ppb (0) N/A N/A 6.0 μg/m3 (25) 35.0
 
Nov. 29, 2020, midnight N/A 33.6 ppb (32) N/A 11.0 ppb (11) N/A N/A 4.0 ppb (4) N/A N/A 7.4 μg/m3 (31) 32.0
 
Nov. 28, 2020, 11 p.m. N/A 34.4 ppb (33) N/A 9.0 ppb (9) N/A N/A 8.0 ppb (8) N/A N/A 2.5 μg/m3 (11) 33.0
 
Nov. 28, 2020, 10 p.m. N/A 35.1 ppb (34) N/A 7.0 ppb (7) N/A N/A 12.0 ppb (12) N/A N/A 1.9 μg/m3 (8) 34.0
 
Nov. 28, 2020, 9 p.m. N/A 36.8 ppb (35) N/A 7.0 ppb (7) N/A N/A 11.0 ppb (11) N/A N/A 2.7 μg/m3 (12) 35.0
 
Nov. 28, 2020, 8 p.m. N/A 36.5 ppb (35) N/A 8.0 ppb (8) N/A N/A 8.0 ppb (8) N/A N/A 3.7 μg/m3 (16) 35.0
 
Nov. 28, 2020, 7 p.m. N/A 33.5 ppb (32) N/A 7.0 ppb (7) N/A N/A 10.0 ppb (10) N/A N/A 3.1 μg/m3 (13) 32.0
 
Nov. 28, 2020, 6 p.m. N/A 32.8 ppb (31) N/A 6.0 ppb (6) N/A N/A 10.0 ppb (10) N/A N/A 3.8 μg/m3 (16) 31.0
 
Nov. 28, 2020, 5 p.m. N/A 34.2 ppb (33) N/A 7.0 ppb (7) N/A N/A 8.0 ppb (8) N/A N/A 5.6 μg/m3 (24) 33.0
 
Nov. 28, 2020, 4 p.m. N/A 35.0 ppb (34) N/A 8.0 ppb (8) N/A N/A 5.0 ppb (5) N/A N/A 7.8 μg/m3 (33) 34.0
 
Nov. 28, 2020, 3 p.m. N/A 35.3 ppb (34) N/A 10.0 ppb (10) N/A N/A 2.0 ppb (2) N/A N/A 8.7 μg/m3 (37) 37.0
 
Nov. 28, 2020, 2 p.m. N/A 36.6 ppb (35) N/A 10.0 ppb (10) N/A N/A 0.0 ppb (0) N/A N/A 8.9 μg/m3 (38) 38.0
 
Nov. 28, 2020, 1 p.m. N/A 35.7 ppb (34) N/A 10.0 ppb (10) N/A N/A 0.0 ppb (0) N/A N/A 15.1 μg/m3 (58) 58.0
 
Nov. 28, 2020, noon N/A 33.7 ppb (32) N/A 10.0 ppb (10) N/A N/A 1.0 ppb (1) N/A N/A 11.2 μg/m3 (47) 47.0
 
Nov. 28, 2020, 11 a.m. N/A 31.5 ppb (30) N/A 9.0 ppb (9) N/A N/A 2.0 ppb (2) N/A N/A 7.0 μg/m3 (30) 30.0
 
Nov. 28, 2020, 10 a.m. N/A 30.8 ppb (30) N/A 9.0 ppb (9) N/A N/A 4.0 ppb (4) N/A N/A 8.5 μg/m3 (36) 36.0
 
Nov. 28, 2020, 9 a.m. N/A 29.3 ppb (28) N/A 9.0 ppb (9) N/A N/A 7.0 ppb (7) N/A N/A 3.2 μg/m3 (14) 28.0
 
Nov. 28, 2020, 8 a.m. N/A 28.7 ppb (28) N/A 9.0 ppb (9) N/A N/A 11.0 ppb (11) N/A N/A 5.2 μg/m3 (22) 28.0
 
Nov. 28, 2020, 7 a.m. N/A 27.7 ppb (27) N/A 12.0 ppb (12) N/A N/A 9.0 ppb (9) N/A N/A 7.8 μg/m3 (33) 33.0
 
Nov. 28, 2020, 6 a.m. N/A 26.5 ppb (25) N/A 12.0 ppb (12) N/A N/A 15.0 ppb (14) N/A N/A 4.7 μg/m3 (20) 25.0
 
Nov. 28, 2020, 5 a.m. N/A 26.1 ppb (25) N/A 13.0 ppb (13) N/A N/A 14.0 ppb (13) N/A N/A 3.9 μg/m3 (17) 25.0
 
Nov. 28, 2020, 4 a.m. N/A 24.5 ppb (24) N/A 11.0 ppb (11) N/A N/A 23.0 ppb (22) N/A N/A 0.7 μg/m3 (3) 24.0
 
Nov. 28, 2020, 3 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 2.1 μg/m3 (9) 9.0
 
Nov. 28, 2020, 2 a.m. N/A 24.6 ppb (24) N/A 16.0 ppb (16) N/A N/A 14.0 ppb (13) N/A N/A 1.9 μg/m3 (8) 24.0
 
Nov. 28, 2020, 1 a.m. N/A 22.5 ppb (22) N/A 16.0 ppb (16) N/A N/A 18.0 ppb (17) N/A N/A 2.8 μg/m3 (12) 22.0
 
Nov. 28, 2020, midnight N/A 22.3 ppb (22) N/A 13.0 ppb (13) N/A N/A 29.0 ppb (27) N/A N/A 4.9 μg/m3 (21) 27.0
 
Nov. 27, 2020, 11 p.m. N/A 28.3 ppb (27) N/A 13.0 ppb (13) N/A N/A 30.0 ppb (28) N/A N/A 1.2 μg/m3 (5) 28.0
 
Nov. 27, 2020, 10 p.m. N/A 28.0 ppb (27) N/A 11.0 ppb (11) N/A N/A 31.0 ppb (29) N/A N/A 0.8 μg/m3 (4) 29.0
 
Nov. 27, 2020, 9 p.m. N/A 33.6 ppb (32) N/A 11.0 ppb (11) N/A N/A 30.0 ppb (28) N/A N/A 0.4 μg/m3 (2) 32.0
 
Nov. 27, 2020, 8 p.m. N/A 38.6 ppb (37) N/A 10.0 ppb (10) N/A N/A 30.0 ppb (28) N/A N/A 0.3 μg/m3 (2) 37.0
 
Nov. 27, 2020, 7 p.m. N/A 35.8 ppb (34) N/A 10.0 ppb (10) N/A N/A 21.0 ppb (20) N/A N/A 0.6 μg/m3 (3) 34.0
 
Nov. 27, 2020, 6 p.m. N/A 36.2 ppb (35) N/A 11.0 ppb (11) N/A N/A 18.0 ppb (17) N/A N/A 0.7 μg/m3 (3) 35.0
 
Nov. 27, 2020, 5 p.m. N/A 35.9 ppb (34) N/A 13.0 ppb (13) N/A N/A 12.0 ppb (12) N/A N/A 2.2 μg/m3 (10) 34.0
 
Nov. 27, 2020, 4 p.m. N/A 38.2 ppb (37) N/A 14.0 ppb (14) N/A N/A 3.0 ppb (3) N/A N/A 4.6 μg/m3 (20) 37.0
 
Nov. 27, 2020, 3 p.m. N/A 32.5 ppb (31) N/A 12.0 ppb (12) N/A N/A 1.0 ppb (1) N/A N/A 2.1 μg/m3 (9) 31.0
 
Nov. 27, 2020, 2 p.m. N/A 28.6 ppb (27) N/A 10.0 ppb (10) N/A N/A 5.0 ppb (5) N/A N/A 0.6 μg/m3 (3) 27.0
 
Nov. 27, 2020, 1 p.m. N/A 26.7 ppb (26) N/A 8.0 ppb (8) N/A N/A 8.0 ppb (8) N/A N/A 1.0 μg/m3 (5) 26.0
 
Nov. 27, 2020, noon N/A 26.3 ppb (25) N/A 6.0 ppb (6) N/A N/A 9.0 ppb (9) N/A N/A 1.1 μg/m3 (5) 25.0
 
Nov. 27, 2020, 11 a.m. N/A 25.4 ppb (24) N/A 7.0 ppb (7) N/A N/A 8.0 ppb (8) N/A N/A 1.1 μg/m3 (5) 24.0
 
Nov. 27, 2020, 10 a.m. N/A 24.8 ppb (24) N/A 8.0 ppb (8) N/A N/A 7.0 ppb (7) N/A N/A 2.5 μg/m3 (11) 24.0
 
Nov. 27, 2020, 9 a.m. N/A 23.7 ppb (23) N/A 8.0 ppb (8) N/A N/A 8.0 ppb (8) N/A N/A 3.4 μg/m3 (15) 23.0
 
Nov. 27, 2020, 8 a.m. N/A 23.0 ppb (22) N/A 7.0 ppb (7) N/A N/A 9.0 ppb (9) N/A N/A 3.2 μg/m3 (14) 22.0
 
Nov. 27, 2020, 7 a.m. N/A 21.9 ppb (21) N/A 7.0 ppb (7) N/A N/A 9.0 ppb (9) N/A N/A 3.1 μg/m3 (13) 21.0
 
Nov. 27, 2020, 6 a.m. N/A 20.8 ppb (20) N/A 8.0 ppb (8) N/A N/A 10.0 ppb (10) N/A N/A 4.2 μg/m3 (18) 20.0
 
Nov. 27, 2020, 5 a.m. N/A 20.1 ppb (19) N/A 7.0 ppb (7) N/A N/A 13.0 ppb (13) N/A N/A 1.9 μg/m3 (8) 19.0
 
Nov. 27, 2020, 4 a.m. N/A 19.3 ppb (19) N/A 9.0 ppb (9) N/A N/A 12.0 ppb (12) N/A N/A 1.7 μg/m3 (8) 19.0
 
Nov. 27, 2020, 3 a.m. N/A 18.4 ppb (18) N/A 10.0 ppb (10) N/A N/A 11.0 ppb (11) N/A N/A 2.3 μg/m3 (10) 18.0
 
Nov. 27, 2020, 2 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
 
Nov. 27, 2020, 1 a.m. N/A 15.4 ppb (15) N/A 9.0 ppb (9) N/A N/A 14.0 ppb (13) N/A N/A 1.3 μg/m3 (6) 15.0
 
Nov. 27, 2020, midnight N/A 13.9 ppb (14) N/A 8.0 ppb (8) N/A N/A 21.0 ppb (20) N/A N/A 0.4 μg/m3 (2) 20.0
 
Nov. 26, 2020, 11 p.m. N/A 14.1 ppb (14) N/A 9.0 ppb (9) N/A N/A 22.0 ppb (21) N/A N/A 0.8 μg/m3 (4) 21.0
 
Nov. 26, 2020, 10 p.m. N/A 17.6 ppb (17) N/A 9.0 ppb (9) N/A N/A 23.0 ppb (22) N/A N/A 0.1 μg/m3 (1) 22.0
 
Nov. 26, 2020, 9 p.m. N/A 18.3 ppb (18) N/A 8.0 ppb (8) N/A N/A 22.0 ppb (21) N/A N/A 0.3 μg/m3 (2) 21.0
 
Nov. 26, 2020, 8 p.m. N/A 22.9 ppb (22) N/A 8.0 ppb (8) N/A N/A 22.0 ppb (21) N/A N/A 0.2 μg/m3 (1) 22.0
 
Nov. 26, 2020, 7 p.m. N/A 23.5 ppb (23) N/A 7.0 ppb (7) N/A N/A 21.0 ppb (20) N/A N/A 0.4 μg/m3 (2) 23.0
 
Nov. 26, 2020, 6 p.m. N/A 25.2 ppb (24) N/A 8.0 ppb (8) N/A N/A 14.0 ppb (13) N/A N/A 0.7 μg/m3 (3) 24.0
 
Nov. 26, 2020, 5 p.m. N/A 25.1 ppb (24) N/A 8.0 ppb (8) N/A N/A 9.0 ppb (9) N/A N/A 0.9 μg/m3 (4) 24.0
 
Nov. 26, 2020, 4 p.m. N/A 26.0 ppb (25) N/A 8.0 ppb (8) N/A N/A 6.0 ppb (6) N/A N/A 1.3 μg/m3 (6) 25.0
 
Nov. 26, 2020, 3 p.m. N/A 26.2 ppb (25) N/A 8.0 ppb (8) N/A N/A 2.0 ppb (2) N/A N/A 1.7 μg/m3 (8) 25.0
 
Nov. 26, 2020, 2 p.m. N/A 26.3 ppb (25) N/A 7.0 ppb (7) N/A N/A 2.0 ppb (2) N/A N/A 2.0 μg/m3 (9) 25.0
 
Nov. 26, 2020, 1 p.m. N/A 26.3 ppb (25) N/A 6.0 ppb (6) N/A N/A 2.0 ppb (2) N/A N/A 1.3 μg/m3 (6) 25.0
 
Nov. 26, 2020, noon N/A 27.3 ppb (26) N/A 5.0 ppb (5) N/A N/A 3.0 ppb (3) N/A N/A 1.5 μg/m3 (7) 26.0
 
Nov. 26, 2020, 11 a.m. N/A 28.4 ppb (27) N/A 4.0 ppb (4) N/A N/A 4.0 ppb (4) N/A N/A 2.2 μg/m3 (10) 27.0
 
Nov. 26, 2020, 10 a.m. N/A 29.5 ppb (28) N/A 4.0 ppb (4) N/A N/A 5.0 ppb (5) N/A N/A 3.3 μg/m3 (14) 28.0
 
Nov. 26, 2020, 9 a.m. N/A 30.3 ppb (29) N/A 5.0 ppb (5) N/A N/A 6.0 ppb (6) N/A N/A 7.2 μg/m3 (31) 31.0
 
Nov. 26, 2020, 8 a.m. N/A 31.0 ppb (30) N/A 5.0 ppb (5) N/A N/A 6.0 ppb (6) N/A N/A 2.6 μg/m3 (11) 30.0
 
Nov. 26, 2020, 7 a.m. N/A 32.5 ppb (31) N/A 5.0 ppb (5) N/A N/A 7.0 ppb (7) N/A N/A 2.9 μg/m3 (13) 31.0
 
Nov. 26, 2020, 6 a.m. N/A 34.4 ppb (33) N/A 7.0 ppb (7) N/A N/A 5.0 ppb (5) N/A N/A 5.6 μg/m3 (24) 33.0
 
Nov. 26, 2020, 5 a.m. N/A 37.2 ppb (36) N/A 10.0 ppb (10) N/A N/A 0.0 ppb (0) N/A N/A 7.3 μg/m3 (31) 36.0
 
Nov. 26, 2020, 4 a.m. N/A 39.3 ppb (38) N/A 11.0 ppb (11) N/A N/A 0.0 ppb (0) N/A N/A 7.7 μg/m3 (33) 38.0
 
Nov. 26, 2020, 3 a.m. N/A 48.3 ppb (46) N/A 12.0 ppb (12) N/A N/A -1.0 ppb (0) N/A N/A 13.7 μg/m3 (55) 55.0
 
Nov. 26, 2020, 2 a.m. N/A 46.7 ppb (45) N/A 11.0 ppb (11) N/A N/A -1.0 ppb (0) N/A N/A 11.5 μg/m3 (48) 48.0
 
Nov. 26, 2020, 1 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 3.2 μg/m3 (14) 14.0
 
Nov. 26, 2020, midnight N/A 41.9 ppb (40) N/A 12.0 ppb (12) N/A N/A 0.0 ppb (0) N/A N/A 4.5 μg/m3 (19) 40.0
 
Nov. 25, 2020, 11 p.m. N/A 40.4 ppb (39) N/A 10.0 ppb (10) N/A N/A 6.0 ppb (6) N/A N/A 4.2 μg/m3 (18) 39.0
 
Nov. 25, 2020, 10 p.m. N/A 41.8 ppb (40) N/A 9.0 ppb (9) N/A N/A 10.0 ppb (10) N/A N/A 2.8 μg/m3 (12) 40.0
 
Nov. 25, 2020, 9 p.m. N/A 44.2 ppb (42) N/A 8.0 ppb (8) N/A N/A 11.0 ppb (11) N/A N/A 2.1 μg/m3 (9) 42.0
 
Nov. 25, 2020, 8 p.m. N/A 48.3 ppb (46) N/A 10.0 ppb (10) N/A N/A 5.0 ppb (5) N/A N/A 3.0 μg/m3 (13) 46.0
 
Nov. 25, 2020, 7 p.m. N/A 47.5 ppb (45) N/A 10.0 ppb (10) N/A N/A 2.0 ppb (2) N/A N/A 3.1 μg/m3 (13) 45.0
 
Nov. 25, 2020, 6 p.m. N/A 43.4 ppb (41) N/A 9.0 ppb (9) N/A N/A 3.0 ppb (3) N/A N/A 2.9 μg/m3 (13) 41.0
 
Nov. 25, 2020, 5 p.m. N/A 42.4 ppb (40) N/A 10.0 ppb (10) N/A N/A 2.0 ppb (2) N/A N/A 3.6 μg/m3 (16) 40.0
 
Nov. 25, 2020, 4 p.m. N/A 41.9 ppb (40) N/A 11.0 ppb (11) N/A N/A 0.0 ppb (0) N/A N/A 5.1 μg/m3 (22) 40.0
 
Nov. 25, 2020, 3 p.m. N/A 36.2 ppb (35) N/A 9.0 ppb (9) N/A N/A 2.0 ppb (2) N/A N/A 1.5 μg/m3 (7) 35.0
 
Nov. 25, 2020, 2 p.m. N/A 35.5 ppb (34) N/A 9.0 ppb (9) N/A N/A 3.0 ppb (3) N/A N/A 4.0 μg/m3 (17) 34.0
 
Nov. 25, 2020, 1 p.m. N/A 34.9 ppb (33) N/A 8.0 ppb (8) N/A N/A 7.0 ppb (7) N/A N/A 1.8 μg/m3 (8) 33.0
 
Nov. 25, 2020, noon N/A 36.1 ppb (35) N/A 8.0 ppb (8) N/A N/A 8.0 ppb (8) N/A N/A 4.5 μg/m3 (19) 35.0
 
Nov. 25, 2020, 11 a.m. N/A 36.5 ppb (35) N/A 9.0 ppb (9) N/A N/A 4.0 ppb (4) N/A N/A 20.3 μg/m3 (69) 69.0
 
Nov. 25, 2020, 10 a.m. N/A 35.7 ppb (34) N/A 8.0 ppb (8) N/A N/A 9.0 ppb (9) N/A N/A 14.1 μg/m3 (56) 56.0
 
Nov. 25, 2020, 9 a.m. N/A 36.2 ppb (35) N/A 9.0 ppb (9) N/A N/A 8.0 ppb (8) N/A N/A 12.6 μg/m3 (53) 53.0
 
Nov. 25, 2020, 8 a.m. N/A 35.4 ppb (34) N/A 10.0 ppb (10) N/A N/A 7.0 ppb (7) N/A N/A 8.7 μg/m3 (37) 37.0
 
Nov. 25, 2020, 7 a.m. N/A 34.3 ppb (33) N/A 11.0 ppb (11) N/A N/A 7.0 ppb (7) N/A N/A 9.1 μg/m3 (38) 38.0