ID: 1168

AQSQID: 000102701

Site Name: Williams Lake Columneetza School

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

Updated: Oct. 19, 2021, 11:02 p.m.

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

Reporting: True, Located: True

Current AQI: 24.0

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
Oct. 19, 2021, 9 p.m. N/A 24.6 ppb (24) N/A N/A N/A N/A 9.0 ppb (9) N/A 5.0 μg/m3 (5) 3.3 μg/m3 (14) 24.0
 
Oct. 19, 2021, 8 p.m. N/A 26.2 ppb (25) N/A N/A N/A N/A 7.0 ppb (7) N/A 6.0 μg/m3 (6) 3.0 μg/m3 (13) 25.0
 
Oct. 19, 2021, 7 p.m. N/A 26.2 ppb (25) N/A -1.0 ppb (0) N/A N/A 5.0 ppb (5) N/A 8.0 μg/m3 (8) 3.0 μg/m3 (13) 25.0
 
Oct. 19, 2021, 6 p.m. N/A 26.5 ppb (25) N/A 0.0 ppb (0) N/A N/A 2.0 ppb (2) N/A 12.0 μg/m3 (12) 3.2 μg/m3 (14) 25.0
 
Oct. 19, 2021, 5 p.m. N/A 25.7 ppb (25) N/A 0.0 ppb (0) N/A N/A 2.0 ppb (2) N/A 6.0 μg/m3 (6) 2.3 μg/m3 (10) 25.0
 
Oct. 19, 2021, 4 p.m. N/A 24.5 ppb (24) N/A 1.0 ppb (1) N/A N/A 2.0 ppb (2) N/A 10.0 μg/m3 (10) 2.7 μg/m3 (12) 24.0
 
Oct. 19, 2021, 3 p.m. N/A 24.2 ppb (23) N/A 1.0 ppb (1) N/A N/A 2.0 ppb (2) N/A 9.0 μg/m3 (9) 2.3 μg/m3 (10) 23.0
 
Oct. 19, 2021, 2 p.m. N/A 23.7 ppb (23) N/A 1.0 ppb (1) N/A N/A 2.0 ppb (2) N/A 4.0 μg/m3 (4) 3.4 μg/m3 (15) 23.0
 
Oct. 19, 2021, 1 p.m. N/A 23.3 ppb (22) N/A -1.0 ppb (0) N/A N/A 5.0 ppb (5) N/A 13.0 μg/m3 (13) 2.8 μg/m3 (12) 22.0
 
Oct. 19, 2021, noon N/A 23.6 ppb (23) N/A 0.0 ppb (0) N/A N/A 0.0 ppb (0) N/A 18.0 μg/m3 (17) 11.9 μg/m3 (50) 50.0
 
Oct. 19, 2021, 11 a.m. N/A 23.8 ppb (23) N/A 0.0 ppb (0) N/A N/A 0.0 ppb (0) N/A 19.0 μg/m3 (18) 12.0 μg/m3 (50) 50.0
 
Oct. 19, 2021, 10 a.m. N/A 22.4 ppb (22) N/A -1.0 ppb (0) N/A N/A 0.0 ppb (0) N/A 24.0 μg/m3 (23) 11.5 μg/m3 (48) 48.0
 
Oct. 19, 2021, 9 a.m. N/A 22.6 ppb (22) N/A 0.0 ppb (0) N/A N/A 0.0 ppb (0) N/A 39.0 μg/m3 (37) 12.8 μg/m3 (53) 53.0
 
Oct. 19, 2021, 8 a.m. N/A 24.7 ppb (24) N/A 1.0 ppb (1) N/A N/A 0.0 ppb (0) N/A 47.0 μg/m3 (44) 14.5 μg/m3 (57) 57.0
 
Oct. 19, 2021, 7 a.m. N/A 24.1 ppb (23) N/A 1.0 ppb (1) N/A N/A 0.0 ppb (0) N/A 29.0 μg/m3 (27) 15.5 μg/m3 (59) 59.0
 
Oct. 19, 2021, 6 a.m. N/A 23.8 ppb (23) N/A 1.0 ppb (1) N/A N/A 0.0 ppb (0) N/A 31.0 μg/m3 (29) 15.7 μg/m3 (59) 59.0
 
Oct. 19, 2021, 5 a.m. N/A 24.2 ppb (23) N/A 1.0 ppb (1) N/A N/A 0.0 ppb (0) N/A 29.0 μg/m3 (27) 15.2 μg/m3 (58) 58.0
 
Oct. 19, 2021, 4 a.m. N/A 25.2 ppb (24) N/A 2.0 ppb (2) N/A N/A 0.0 ppb (0) N/A 40.0 μg/m3 (38) 16.4 μg/m3 (61) 61.0
 
Oct. 19, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 32.0 μg/m3 (30) 17.2 μg/m3 (62) 62.0
 
Oct. 19, 2021, 2 a.m. N/A 24.9 ppb (24) N/A 3.0 ppb (3) N/A N/A 0.0 ppb (0) N/A 32.0 μg/m3 (30) 17.8 μg/m3 (63) 63.0
 
Oct. 19, 2021, 1 a.m. N/A 20.4 ppb (20) N/A 3.0 ppb (3) N/A N/A 4.0 ppb (4) N/A 29.0 μg/m3 (27) 13.8 μg/m3 (55) 55.0
 
Oct. 19, 2021, midnight N/A 18.2 ppb (18) N/A 1.0 ppb (1) N/A N/A 13.0 ppb (13) N/A 12.0 μg/m3 (12) 13.7 μg/m3 (55) 55.0
 
Oct. 18, 2021, 11 p.m. N/A 16.9 ppb (16) N/A 0.0 ppb (0) N/A N/A 17.0 ppb (16) N/A 12.0 μg/m3 (12) 9.8 μg/m3 (41) 41.0
 
Oct. 18, 2021, 10 p.m. N/A 16.3 ppb (16) N/A 0.0 ppb (0) N/A N/A 18.0 ppb (17) N/A 12.0 μg/m3 (12) 9.6 μg/m3 (40) 40.0
 
Oct. 18, 2021, 9 p.m. N/A 15.1 ppb (15) N/A 0.0 ppb (0) N/A N/A 16.0 ppb (15) N/A 11.0 μg/m3 (11) 9.4 μg/m3 (40) 40.0
 
Oct. 18, 2021, 8 p.m. N/A 14.1 ppb (14) N/A 1.0 ppb (1) N/A N/A 15.0 ppb (14) N/A 18.0 μg/m3 (17) 9.8 μg/m3 (41) 41.0
 
Oct. 18, 2021, 7 p.m. N/A 12.8 ppb (13) N/A 2.0 ppb (2) N/A N/A 12.0 ppb (12) N/A 24.0 μg/m3 (23) 16.0 μg/m3 (60) 60.0
 
Oct. 18, 2021, 6 p.m. N/A 12.1 ppb (12) N/A 2.0 ppb (2) N/A N/A 12.0 ppb (12) N/A 21.0 μg/m3 (20) 16.6 μg/m3 (61) 61.0
 
Oct. 18, 2021, 5 p.m. N/A 10.1 ppb (10) N/A 1.0 ppb (1) N/A N/A 13.0 ppb (13) N/A 13.0 μg/m3 (13) 18.4 μg/m3 (65) 65.0
 
Oct. 18, 2021, 4 p.m. N/A 9.1 ppb (9) N/A 0.0 ppb (0) N/A N/A 14.0 ppb (13) N/A 11.0 μg/m3 (11) 9.9 μg/m3 (42) 42.0
 
Oct. 18, 2021, 3 p.m. N/A 8.3 ppb (8) N/A 1.0 ppb (1) N/A N/A 14.0 ppb (13) N/A 14.0 μg/m3 (13) 10.6 μg/m3 (45) 45.0
 
Oct. 18, 2021, 2 p.m. N/A 8.4 ppb (8) N/A 0.0 ppb (0) N/A N/A 14.0 ppb (13) N/A 10.0 μg/m3 (10) 10.5 μg/m3 (44) 44.0
 
Oct. 18, 2021, 1 p.m. N/A 7.8 ppb (8) N/A 0.0 ppb (0) N/A N/A 12.0 ppb (12) N/A 12.0 μg/m3 (12) 8.7 μg/m3 (37) 37.0
 
Oct. 18, 2021, noon N/A 7.1 ppb (7) N/A 0.0 ppb (0) N/A N/A 14.0 ppb (13) N/A 9.0 μg/m3 (9) 8.3 μg/m3 (35) 35.0
 
Oct. 18, 2021, 11 a.m. N/A 6.6 ppb (7) N/A 0.0 ppb (0) N/A N/A 15.0 ppb (14) N/A 18.0 μg/m3 (17) 8.3 μg/m3 (35) 35.0
 
Oct. 18, 2021, 10 a.m. N/A 6.3 ppb (6) N/A 0.0 ppb (0) N/A N/A 16.0 ppb (15) N/A 11.0 μg/m3 (11) 7.3 μg/m3 (31) 31.0
 
Oct. 18, 2021, 9 a.m. N/A 5.7 ppb (6) N/A 1.0 ppb (1) N/A N/A 16.0 ppb (15) N/A 5.0 μg/m3 (5) 6.3 μg/m3 (27) 27.0
 
Oct. 18, 2021, 8 a.m. N/A 4.9 ppb (5) N/A 0.0 ppb (0) N/A N/A 18.0 ppb (17) N/A 1.0 μg/m3 (1) 4.6 μg/m3 (20) 20.0
 
Oct. 18, 2021, 7 a.m. N/A 4.4 ppb (5) N/A 1.0 ppb (1) N/A N/A 19.0 ppb (18) N/A 11.0 μg/m3 (11) 3.3 μg/m3 (14) 18.0
 
Oct. 18, 2021, 6 a.m. N/A 4.5 ppb (5) N/A 1.0 ppb (1) N/A N/A 20.0 ppb (19) N/A 7.0 μg/m3 (7) 4.2 μg/m3 (18) 19.0
 
Oct. 18, 2021, 5 a.m. N/A 4.0 ppb (4) N/A 1.0 ppb (1) N/A N/A 23.0 ppb (22) N/A 7.0 μg/m3 (7) 3.4 μg/m3 (15) 22.0
 
Oct. 18, 2021, 4 a.m. N/A 4.6 ppb (5) N/A 2.0 ppb (2) N/A N/A 23.0 ppb (22) N/A 7.0 μg/m3 (7) 3.8 μg/m3 (16) 22.0
 
Oct. 18, 2021, 3 a.m. N/A 5.9 ppb (6) N/A 1.0 ppb (1) N/A N/A 20.0 ppb (19) N/A 6.0 μg/m3 (6) 4.8 μg/m3 (20) 20.0
 
Oct. 18, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 9.0 μg/m3 (9) 4.1 μg/m3 (18) 18.0
 
Oct. 18, 2021, 1 a.m. N/A 5.8 ppb (6) N/A 2.0 ppb (2) N/A N/A 21.0 ppb (20) N/A 6.0 μg/m3 (6) 3.4 μg/m3 (15) 20.0
 
Oct. 18, 2021, midnight N/A 6.0 ppb (6) N/A 2.0 ppb (2) N/A N/A 22.0 ppb (21) N/A 2.0 μg/m3 (2) 2.5 μg/m3 (11) 21.0
 
Oct. 17, 2021, 11 p.m. N/A 6.5 ppb (7) N/A 2.0 ppb (2) N/A N/A 24.0 ppb (23) N/A 4.0 μg/m3 (4) 2.3 μg/m3 (10) 23.0
 
Oct. 17, 2021, 10 p.m. N/A 7.3 ppb (7) N/A 1.0 ppb (1) N/A N/A 22.0 ppb (21) N/A 1.0 μg/m3 (1) 1.6 μg/m3 (7) 21.0
 
Oct. 17, 2021, 9 p.m. N/A 7.7 ppb (8) N/A 1.0 ppb (1) N/A N/A 20.0 ppb (19) N/A 1.0 μg/m3 (1) 1.1 μg/m3 (5) 19.0
 
Oct. 17, 2021, 8 p.m. N/A 8.1 ppb (8) N/A 1.0 ppb (1) N/A N/A 20.0 ppb (19) N/A 3.0 μg/m3 (3) 0.7 μg/m3 (3) 19.0
 
Oct. 17, 2021, 7 p.m. N/A 8.3 ppb (8) N/A 1.0 ppb (1) N/A N/A 19.0 ppb (18) N/A 2.0 μg/m3 (2) 2.2 μg/m3 (10) 18.0
 
Oct. 17, 2021, 6 p.m. N/A 8.1 ppb (8) N/A 1.0 ppb (1) N/A N/A 21.0 ppb (20) N/A 2.0 μg/m3 (2) 1.0 μg/m3 (5) 20.0
 
Oct. 17, 2021, 5 p.m. N/A 7.8 ppb (8) N/A 1.0 ppb (1) N/A N/A 19.0 ppb (18) N/A 2.0 μg/m3 (2) 9.3 μg/m3 (39) 39.0
 
Oct. 17, 2021, 4 p.m. N/A 7.4 ppb (7) N/A 1.0 ppb (1) N/A N/A 19.0 ppb (18) N/A 7.0 μg/m3 (7) 4.9 μg/m3 (21) 21.0
 
Oct. 17, 2021, 3 p.m. N/A 7.3 ppb (7) N/A 2.0 ppb (2) N/A N/A 20.0 ppb (19) N/A 15.0 μg/m3 (14) 2.3 μg/m3 (10) 19.0
 
Oct. 17, 2021, 2 p.m. N/A 7.5 ppb (8) N/A 2.0 ppb (2) N/A N/A 21.0 ppb (20) N/A 6.0 μg/m3 (6) 0.8 μg/m3 (4) 20.0
 
Oct. 17, 2021, 1 p.m. N/A 8.0 ppb (8) N/A 2.0 ppb (2) N/A N/A 21.0 ppb (20) N/A 20.0 μg/m3 (19) 0.8 μg/m3 (4) 20.0
 
Oct. 17, 2021, noon N/A 9.1 ppb (9) N/A 2.0 ppb (2) N/A N/A 22.0 ppb (21) N/A 13.0 μg/m3 (13) 2.3 μg/m3 (10) 21.0
 
Oct. 17, 2021, 11 a.m. N/A 11.1 ppb (11) N/A 2.0 ppb (2) N/A N/A 21.0 ppb (20) N/A 3.0 μg/m3 (3) 2.0 μg/m3 (9) 20.0
 
Oct. 17, 2021, 10 a.m. N/A 15.0 ppb (15) N/A 2.0 ppb (2) N/A N/A 20.0 ppb (19) N/A 1.0 μg/m3 (1) 1.9 μg/m3 (8) 19.0
 
Oct. 17, 2021, 9 a.m. N/A 21.4 ppb (21) N/A 1.0 ppb (1) N/A N/A 18.0 ppb (17) N/A 6.0 μg/m3 (6) 1.9 μg/m3 (8) 21.0
 
Oct. 17, 2021, 8 a.m. N/A 24.0 ppb (23) N/A 0.0 ppb (0) N/A N/A 9.0 ppb (9) N/A 6.0 μg/m3 (6) 4.1 μg/m3 (18) 23.0
 
Oct. 17, 2021, 7 a.m. N/A 23.4 ppb (23) N/A 0.0 ppb (0) N/A N/A 8.0 ppb (8) N/A 9.0 μg/m3 (9) 2.2 μg/m3 (10) 23.0
 
Oct. 17, 2021, 6 a.m. N/A 22.0 ppb (21) N/A 1.0 ppb (1) N/A N/A 8.0 ppb (8) N/A 48.0 μg/m3 (45) 3.3 μg/m3 (14) 45.0
 
Oct. 17, 2021, 5 a.m. N/A 21.4 ppb (21) N/A 2.0 ppb (2) N/A N/A 8.0 ppb (8) N/A 7.0 μg/m3 (7) 7.1 μg/m3 (30) 30.0
 
Oct. 17, 2021, 4 a.m. N/A 19.9 ppb (19) N/A 3.0 ppb (3) N/A N/A 7.0 ppb (7) N/A 0.0 μg/m3 (0) 6.3 μg/m3 (27) 27.0
 
Oct. 17, 2021, 3 a.m. N/A 16.8 ppb (16) N/A 4.0 ppb (4) N/A N/A 6.0 ppb (6) N/A 49.0 μg/m3 (46) 5.9 μg/m3 (25) 46.0
 
Oct. 17, 2021, 2 a.m. N/A 13.3 ppb (13) N/A 4.0 ppb (4) N/A N/A 9.0 ppb (9) N/A 15.0 μg/m3 (14) 5.0 μg/m3 (21) 21.0
 
Oct. 17, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 5.0 μg/m3 (5) 2.8 μg/m3 (12) 12.0
 
Oct. 17, 2021, midnight N/A 7.8 ppb (8) N/A 4.0 ppb (4) N/A N/A 25.0 ppb (24) N/A 3.0 μg/m3 (3) 3.0 μg/m3 (13) 24.0
 
Oct. 16, 2021, 11 p.m. N/A 5.9 ppb (6) N/A 4.0 ppb (4) N/A N/A 29.0 ppb (27) N/A 4.0 μg/m3 (4) 2.0 μg/m3 (9) 27.0
 
Oct. 16, 2021, 10 p.m. N/A 5.4 ppb (6) N/A 5.0 ppb (5) N/A N/A 32.0 ppb (30) N/A 6.0 μg/m3 (6) 2.0 μg/m3 (9) 30.0
 
Oct. 16, 2021, 9 p.m. N/A 6.3 ppb (6) N/A 5.0 ppb (5) N/A N/A 33.0 ppb (31) N/A 8.0 μg/m3 (8) 1.8 μg/m3 (8) 31.0
 
Oct. 16, 2021, 8 p.m. N/A 4.8 ppb (5) N/A 4.0 ppb (4) N/A N/A 32.0 ppb (30) N/A 1.0 μg/m3 (1) 1.5 μg/m3 (7) 30.0
 
Oct. 16, 2021, 7 p.m. N/A 4.1 ppb (4) N/A 5.0 ppb (5) N/A N/A 32.0 ppb (30) N/A 4.0 μg/m3 (4) 1.6 μg/m3 (7) 30.0
 
Oct. 16, 2021, 6 p.m. N/A 4.3 ppb (5) N/A 4.0 ppb (4) N/A N/A 32.0 ppb (30) N/A 0.0 μg/m3 (0) 1.5 μg/m3 (7) 30.0
 
Oct. 16, 2021, 5 p.m. N/A 3.6 ppb (4) N/A 4.0 ppb (4) N/A N/A 31.0 ppb (29) N/A 3.0 μg/m3 (3) 1.7 μg/m3 (8) 29.0
 
Oct. 16, 2021, 4 p.m. N/A 3.4 ppb (4) N/A 4.0 ppb (4) N/A N/A 32.0 ppb (30) N/A 2.0 μg/m3 (2) 1.4 μg/m3 (6) 30.0
 
Oct. 16, 2021, 3 p.m. N/A 4.2 ppb (4) N/A 4.0 ppb (4) N/A N/A 32.0 ppb (30) N/A 2.0 μg/m3 (2) 1.3 μg/m3 (6) 30.0
 
Oct. 16, 2021, 2 p.m. N/A 4.0 ppb (4) N/A 4.0 ppb (4) N/A N/A 32.0 ppb (30) N/A 4.0 μg/m3 (4) 1.0 μg/m3 (5) 30.0
 
Oct. 16, 2021, 1 p.m. N/A 4.1 ppb (4) N/A 4.0 ppb (4) N/A N/A 32.0 ppb (30) N/A 5.0 μg/m3 (5) 0.9 μg/m3 (4) 30.0
 
Oct. 16, 2021, noon N/A 4.4 ppb (5) N/A 4.0 ppb (4) N/A N/A 31.0 ppb (29) N/A 16.0 μg/m3 (15) 0.9 μg/m3 (4) 29.0
 
Oct. 16, 2021, 11 a.m. N/A 5.2 ppb (5) N/A 3.0 ppb (3) N/A N/A 31.0 ppb (29) N/A 8.0 μg/m3 (8) 0.7 μg/m3 (3) 29.0
 
Oct. 16, 2021, 10 a.m. N/A 6.0 ppb (6) N/A 3.0 ppb (3) N/A N/A 31.0 ppb (29) N/A 15.0 μg/m3 (14) 0.8 μg/m3 (4) 29.0
 
Oct. 16, 2021, 9 a.m. N/A 7.1 ppb (7) N/A 3.0 ppb (3) N/A N/A 31.0 ppb (29) N/A 10.0 μg/m3 (10) 0.9 μg/m3 (4) 29.0
 
Oct. 16, 2021, 8 a.m. N/A 8.0 ppb (8) N/A 3.0 ppb (3) N/A N/A 31.0 ppb (29) N/A 4.0 μg/m3 (4) 1.0 μg/m3 (5) 29.0
 
Oct. 16, 2021, 7 a.m. N/A 8.1 ppb (8) N/A 3.0 ppb (3) N/A N/A 30.0 ppb (28) N/A 4.0 μg/m3 (4) 1.2 μg/m3 (5) 28.0
 
Oct. 16, 2021, 6 a.m. N/A 8.6 ppb (9) N/A 3.0 ppb (3) N/A N/A 29.0 ppb (27) N/A 2.0 μg/m3 (2) 1.4 μg/m3 (6) 27.0
 
Oct. 16, 2021, 5 a.m. N/A 8.6 ppb (9) N/A 3.0 ppb (3) N/A N/A 28.0 ppb (26) N/A 1.0 μg/m3 (1) 2.0 μg/m3 (9) 26.0
 
Oct. 16, 2021, 4 a.m. N/A 8.8 ppb (9) N/A 3.0 ppb (3) N/A N/A 28.0 ppb (26) N/A 3.0 μg/m3 (3) 2.2 μg/m3 (10) 26.0
 
Oct. 16, 2021, 3 a.m. N/A 8.0 ppb (8) N/A 3.0 ppb (3) N/A N/A 29.0 ppb (27) N/A 9.0 μg/m3 (9) 2.0 μg/m3 (9) 27.0
 
Oct. 16, 2021, 2 a.m. N/A 6.6 ppb (7) N/A 4.0 ppb (4) N/A N/A 31.0 ppb (29) N/A 6.0 μg/m3 (6) 1.7 μg/m3 (8) 29.0
 
Oct. 16, 2021, 1 a.m. N/A 5.7 ppb (6) N/A 4.0 ppb (4) N/A N/A 31.0 ppb (29) N/A 5.0 μg/m3 (5) 2.4 μg/m3 (10) 29.0
 
Oct. 16, 2021, midnight N/A N/A N/A N/A N/A N/A N/A N/A 9.0 μg/m3 (9) 3.0 μg/m3 (13) 13.0
 
Oct. 15, 2021, 11 p.m. N/A 6.8 ppb (7) N/A 5.0 ppb (5) N/A N/A 32.0 ppb (30) N/A 6.0 μg/m3 (6) 2.7 μg/m3 (12) 30.0
 
Oct. 15, 2021, 10 p.m. N/A 7.4 ppb (7) N/A 4.0 ppb (4) N/A N/A 31.0 ppb (29) N/A 2.0 μg/m3 (2) 2.8 μg/m3 (12) 29.0
 
Oct. 15, 2021, 9 p.m. N/A 6.7 ppb (7) N/A 4.0 ppb (4) N/A N/A 29.0 ppb (27) N/A 5.0 μg/m3 (5) 2.8 μg/m3 (12) 27.0
 
Oct. 15, 2021, 8 p.m. N/A 6.5 ppb (7) N/A 4.0 ppb (4) N/A N/A 29.0 ppb (27) N/A 3.0 μg/m3 (3) 1.3 μg/m3 (6) 27.0
 
Oct. 15, 2021, 7 p.m. N/A 6.2 ppb (6) N/A 3.0 ppb (3) N/A N/A 28.0 ppb (26) N/A 0.0 μg/m3 (0) 1.2 μg/m3 (5) 26.0
 
Oct. 15, 2021, 6 p.m. N/A 6.1 ppb (6) N/A 2.0 ppb (2) N/A N/A 27.0 ppb (25) N/A 1.0 μg/m3 (1) 1.2 μg/m3 (5) 25.0
 
Oct. 15, 2021, 5 p.m. N/A 4.7 ppb (5) N/A 2.0 ppb (2) N/A N/A 26.0 ppb (25) N/A 3.0 μg/m3 (3) 1.3 μg/m3 (6) 25.0
 
Oct. 15, 2021, 4 p.m. N/A 4.6 ppb (5) N/A 2.0 ppb (2) N/A N/A 26.0 ppb (25) N/A 7.0 μg/m3 (7) 1.1 μg/m3 (5) 25.0
 
Oct. 15, 2021, 3 p.m. N/A 4.3 ppb (5) N/A 2.0 ppb (2) N/A N/A 26.0 ppb (25) N/A 1.0 μg/m3 (1) 1.1 μg/m3 (5) 25.0
 
Oct. 15, 2021, 2 p.m. N/A 3.7 ppb (4) N/A 2.0 ppb (2) N/A N/A 26.0 ppb (25) N/A 2.0 μg/m3 (2) 1.1 μg/m3 (5) 25.0
 
Oct. 15, 2021, 1 p.m. N/A 3.1 ppb (3) N/A 2.0 ppb (2) N/A N/A 26.0 ppb (25) N/A 2.0 μg/m3 (2) 1.2 μg/m3 (5) 25.0
 
Oct. 15, 2021, noon N/A 3.8 ppb (4) N/A 3.0 ppb (3) N/A N/A 26.0 ppb (25) N/A 5.0 μg/m3 (5) 1.3 μg/m3 (6) 25.0
 
Oct. 15, 2021, 11 a.m. N/A 4.6 ppb (5) N/A 3.0 ppb (3) N/A N/A 27.0 ppb (25) N/A 0.0 μg/m3 (0) 1.5 μg/m3 (7) 25.0
 
Oct. 15, 2021, 10 a.m. N/A 6.4 ppb (7) N/A 3.0 ppb (3) N/A N/A 25.0 ppb (24) N/A 3.0 μg/m3 (3) 1.9 μg/m3 (8) 24.0
 
Oct. 15, 2021, 9 a.m. N/A 8.1 ppb (8) N/A 3.0 ppb (3) N/A N/A 25.0 ppb (24) N/A 8.0 μg/m3 (8) 2.2 μg/m3 (10) 24.0
 
Oct. 15, 2021, 8 a.m. N/A 11.7 ppb (12) N/A 3.0 ppb (3) N/A N/A 24.0 ppb (23) N/A 7.0 μg/m3 (7) 2.3 μg/m3 (10) 23.0
 
Oct. 15, 2021, 7 a.m. N/A 13.4 ppb (13) N/A 2.0 ppb (2) N/A N/A 25.0 ppb (24) N/A 3.0 μg/m3 (3) 1.9 μg/m3 (8) 24.0
 
Oct. 15, 2021, 6 a.m. N/A 13.2 ppb (13) N/A 1.0 ppb (1) N/A N/A 26.0 ppb (25) N/A 6.0 μg/m3 (6) 2.1 μg/m3 (9) 25.0
 
Oct. 15, 2021, 5 a.m. N/A 13.2 ppb (13) N/A 2.0 ppb (2) N/A N/A 25.0 ppb (24) N/A 7.0 μg/m3 (7) 2.6 μg/m3 (11) 24.0
 
Oct. 15, 2021, 4 a.m. N/A 14.0 ppb (14) N/A 2.0 ppb (2) N/A N/A 26.0 ppb (25) N/A 32.0 μg/m3 (30) 2.5 μg/m3 (11) 30.0
 
Oct. 15, 2021, 3 a.m. N/A 14.0 ppb (14) N/A 4.0 ppb (4) N/A N/A 25.0 ppb (24) N/A 21.0 μg/m3 (20) 3.4 μg/m3 (15) 24.0
 
Oct. 15, 2021, 2 a.m. N/A 12.4 ppb (12) N/A 4.0 ppb (4) N/A N/A 28.0 ppb (26) N/A 18.0 μg/m3 (17) 3.3 μg/m3 (14) 26.0
 
Oct. 15, 2021, 1 a.m. N/A 11.6 ppb (11) N/A 3.0 ppb (3) N/A N/A 28.0 ppb (26) N/A 5.0 μg/m3 (5) 2.6 μg/m3 (11) 26.0
 
Oct. 15, 2021, midnight N/A 10.8 ppb (11) N/A 4.0 ppb (4) N/A N/A 27.0 ppb (25) N/A 5.0 μg/m3 (5) 3.1 μg/m3 (13) 25.0
 
Oct. 14, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 2.0 μg/m3 (2) 3.1 μg/m3 (13) 13.0
 
Oct. 14, 2021, 10 p.m. N/A 15.0 ppb (15) N/A 3.0 ppb (3) N/A N/A 28.0 ppb (26) N/A 2.0 μg/m3 (2) 2.9 μg/m3 (13) 26.0
 
Oct. 14, 2021, 9 p.m. N/A 16.2 ppb (16) N/A 2.0 ppb (2) N/A N/A 26.0 ppb (25) N/A 3.0 μg/m3 (3) 3.2 μg/m3 (14) 25.0
 
Oct. 14, 2021, 8 p.m. N/A 18.1 ppb (18) N/A 1.0 ppb (1) N/A N/A 25.0 ppb (24) N/A 8.0 μg/m3 (8) 2.7 μg/m3 (12) 24.0
 
Oct. 14, 2021, 7 p.m. N/A 20.3 ppb (20) N/A 1.0 ppb (1) N/A N/A 22.0 ppb (21) N/A 2.0 μg/m3 (2) 1.7 μg/m3 (8) 21.0
 
Oct. 14, 2021, 6 p.m. N/A 20.3 ppb (20) N/A 0.0 ppb (0) N/A N/A 19.0 ppb (18) N/A 4.0 μg/m3 (4) 1.5 μg/m3 (7) 20.0
 
Oct. 14, 2021, 5 p.m. N/A 20.0 ppb (19) N/A 1.0 ppb (1) N/A N/A 15.0 ppb (14) N/A 15.0 μg/m3 (14) 2.6 μg/m3 (11) 19.0
 
Oct. 14, 2021, 4 p.m. N/A 19.0 ppb (18) N/A 3.0 ppb (3) N/A N/A 8.0 ppb (8) N/A 21.0 μg/m3 (20) 4.6 μg/m3 (20) 20.0
 
Oct. 14, 2021, 3 p.m. N/A 18.1 ppb (18) N/A 4.0 ppb (4) N/A N/A 5.0 ppb (5) N/A 17.0 μg/m3 (16) 4.7 μg/m3 (20) 20.0
 
Oct. 14, 2021, 2 p.m. N/A 16.2 ppb (16) N/A 5.0 ppb (5) N/A N/A 6.0 ppb (6) N/A 14.0 μg/m3 (13) 3.8 μg/m3 (16) 16.0
 
Oct. 14, 2021, 1 p.m. N/A 14.7 ppb (14) N/A 2.0 ppb (2) N/A N/A 8.0 ppb (8) N/A 11.0 μg/m3 (11) 2.9 μg/m3 (13) 14.0
 
Oct. 14, 2021, noon N/A 14.0 ppb (14) N/A 1.0 ppb (1) N/A N/A 12.0 ppb (12) N/A 4.0 μg/m3 (4) 2.4 μg/m3 (10) 14.0
 
Oct. 14, 2021, 11 a.m. N/A 14.9 ppb (15) N/A 0.0 ppb (0) N/A N/A 15.0 ppb (14) N/A 5.0 μg/m3 (5) 2.1 μg/m3 (9) 15.0
 
Oct. 14, 2021, 10 a.m. N/A 14.4 ppb (14) N/A 0.0 ppb (0) N/A N/A 12.0 ppb (12) N/A 10.0 μg/m3 (10) 2.7 μg/m3 (12) 14.0
 
Oct. 14, 2021, 9 a.m. N/A 14.0 ppb (14) N/A 0.0 ppb (0) N/A N/A 13.0 ppb (13) N/A 15.0 μg/m3 (14) 1.9 μg/m3 (8) 14.0
 
Oct. 14, 2021, 8 a.m. N/A 13.7 ppb (13) N/A 1.0 ppb (1) N/A N/A 12.0 ppb (12) N/A 19.0 μg/m3 (18) 2.0 μg/m3 (9) 18.0
 
Oct. 14, 2021, 7 a.m. N/A 14.2 ppb (14) N/A 1.0 ppb (1) N/A N/A 11.0 ppb (11) N/A 11.0 μg/m3 (11) 2.1 μg/m3 (9) 14.0
 
Oct. 14, 2021, 6 a.m. N/A 14.4 ppb (14) N/A 2.0 ppb (2) N/A N/A 10.0 ppb (10) N/A 23.0 μg/m3 (22) 2.4 μg/m3 (10) 22.0
 
Oct. 14, 2021, 5 a.m. N/A 14.4 ppb (14) N/A 2.0 ppb (2) N/A N/A 11.0 ppb (11) N/A 5.0 μg/m3 (5) 3.4 μg/m3 (15) 15.0
 
Oct. 14, 2021, 4 a.m. N/A 14.6 ppb (14) N/A 3.0 ppb (3) N/A N/A 11.0 ppb (11) N/A 13.0 μg/m3 (13) 2.3 μg/m3 (10) 14.0
 
Oct. 14, 2021, 3 a.m. N/A 14.9 ppb (15) N/A 3.0 ppb (3) N/A N/A 14.0 ppb (13) N/A 28.0 μg/m3 (26) 2.3 μg/m3 (10) 26.0
 
Oct. 14, 2021, 2 a.m. N/A 14.5 ppb (14) N/A 3.0 ppb (3) N/A N/A 16.0 ppb (15) N/A 14.0 μg/m3 (13) 2.2 μg/m3 (10) 15.0
 
Oct. 14, 2021, 1 a.m. N/A 13.9 ppb (14) N/A 2.0 ppb (2) N/A N/A 19.0 ppb (18) N/A 9.0 μg/m3 (9) 1.5 μg/m3 (7) 18.0
 
Oct. 14, 2021, midnight N/A 14.3 ppb (14) N/A 2.0 ppb (2) N/A N/A 22.0 ppb (21) N/A 5.0 μg/m3 (5) 1.5 μg/m3 (7) 21.0
 
Oct. 13, 2021, 11 p.m. N/A 14.8 ppb (14) N/A 2.0 ppb (2) N/A N/A 27.0 ppb (25) N/A 1.0 μg/m3 (1) 0.8 μg/m3 (4) 25.0
 
Oct. 13, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 5.0 μg/m3 (5) 0.7 μg/m3 (3) 5.0
 
Oct. 13, 2021, 9 p.m. N/A 19.2 ppb (19) N/A 2.0 ppb (2) N/A N/A 27.0 ppb (25) N/A 9.0 μg/m3 (9) 0.9 μg/m3 (4) 25.0
 
Oct. 13, 2021, 8 p.m. N/A 20.1 ppb (19) N/A 1.0 ppb (1) N/A N/A 21.0 ppb (20) N/A 4.0 μg/m3 (4) 1.1 μg/m3 (5) 20.0
 
Oct. 13, 2021, 7 p.m. N/A 19.6 ppb (19) N/A 1.0 ppb (1) N/A N/A 19.0 ppb (18) N/A 2.0 μg/m3 (2) 1.7 μg/m3 (8) 19.0
 
Oct. 13, 2021, 6 p.m. N/A 18.8 ppb (18) N/A 1.0 ppb (1) N/A N/A 17.0 ppb (16) N/A 4.0 μg/m3 (4) 2.3 μg/m3 (10) 18.0
 
Oct. 13, 2021, 5 p.m. N/A 19.1 ppb (19) N/A 0.0 ppb (0) N/A N/A 16.0 ppb (15) N/A 4.0 μg/m3 (4) 1.9 μg/m3 (8) 19.0
 
Oct. 13, 2021, 4 p.m. N/A 20.1 ppb (19) N/A 0.0 ppb (0) N/A N/A 14.0 ppb (13) N/A 6.0 μg/m3 (6) 1.7 μg/m3 (8) 19.0
 
Oct. 13, 2021, 3 p.m. N/A 23.0 ppb (22) N/A 2.0 ppb (2) N/A N/A 7.0 ppb (7) N/A 10.0 μg/m3 (10) 3.0 μg/m3 (13) 22.0
 
Oct. 13, 2021, 2 p.m. N/A 23.8 ppb (23) N/A 2.0 ppb (2) N/A N/A 0.0 ppb (0) N/A 13.0 μg/m3 (13) 6.7 μg/m3 (28) 28.0
 
Oct. 13, 2021, 1 p.m. N/A 21.3 ppb (21) N/A 2.0 ppb (2) N/A N/A 0.0 ppb (0) N/A 15.0 μg/m3 (14) 11.2 μg/m3 (47) 47.0
 
Oct. 13, 2021, noon N/A 17.3 ppb (17) N/A 1.0 ppb (1) N/A N/A 2.0 ppb (2) N/A 15.0 μg/m3 (14) 7.4 μg/m3 (31) 31.0
 
Oct. 13, 2021, 11 a.m. N/A 17.3 ppb (17) N/A 2.0 ppb (2) N/A N/A 0.0 ppb (0) N/A 13.0 μg/m3 (13) 6.6 μg/m3 (28) 28.0
 
Oct. 13, 2021, 10 a.m. N/A 16.2 ppb (16) N/A 1.0 ppb (1) N/A N/A 2.0 ppb (2) N/A 12.0 μg/m3 (12) 5.5 μg/m3 (23) 23.0
 
Oct. 13, 2021, 9 a.m. N/A 15.5 ppb (15) N/A 1.0 ppb (1) N/A N/A 4.0 ppb (4) N/A 10.0 μg/m3 (10) 3.8 μg/m3 (16) 16.0
 
Oct. 13, 2021, 8 a.m. N/A 15.4 ppb (15) N/A 1.0 ppb (1) N/A N/A 6.0 ppb (6) N/A 10.0 μg/m3 (10) 1.6 μg/m3 (7) 15.0
 
Oct. 13, 2021, 7 a.m. N/A 13.6 ppb (13) N/A 1.0 ppb (1) N/A N/A 7.0 ppb (7) N/A 7.0 μg/m3 (7) 2.8 μg/m3 (12) 13.0
 
Oct. 13, 2021, 6 a.m. N/A 12.4 ppb (12) N/A 3.0 ppb (3) N/A N/A 8.0 ppb (8) N/A 20.0 μg/m3 (19) 8.9 μg/m3 (38) 38.0
 
Oct. 13, 2021, 5 a.m. N/A 10.6 ppb (10) N/A 3.0 ppb (3) N/A N/A 12.0 ppb (12) N/A 24.0 μg/m3 (23) 6.0 μg/m3 (25) 25.0
 
Oct. 13, 2021, 4 a.m. N/A 8.4 ppb (8) N/A 2.0 ppb (2) N/A N/A 19.0 ppb (18) N/A 9.0 μg/m3 (9) 3.6 μg/m3 (16) 18.0
 
Oct. 13, 2021, 3 a.m. N/A 7.2 ppb (7) N/A 2.0 ppb (2) N/A N/A 20.0 ppb (19) N/A 6.0 μg/m3 (6) 3.7 μg/m3 (16) 19.0
 
Oct. 13, 2021, 2 a.m. N/A 6.1 ppb (6) N/A 2.0 ppb (2) N/A N/A 22.0 ppb (21) N/A 2.0 μg/m3 (2) 2.0 μg/m3 (9) 21.0
 
Oct. 13, 2021, 1 a.m. N/A 5.6 ppb (6) N/A 2.0 ppb (2) N/A N/A 22.0 ppb (21) N/A 6.0 μg/m3 (6) 1.8 μg/m3 (8) 21.0
 
Oct. 13, 2021, midnight N/A 6.0 ppb (6) N/A 2.0 ppb (2) N/A N/A 22.0 ppb (21) N/A 8.0 μg/m3 (8) 1.9 μg/m3 (8) 21.0
 
Oct. 12, 2021, 11 p.m. N/A 4.8 ppb (5) N/A 2.0 ppb (2) N/A N/A 22.0 ppb (21) N/A 4.0 μg/m3 (4) 1.3 μg/m3 (6) 21.0
 
Oct. 12, 2021, 10 p.m. N/A 3.5 ppb (4) N/A 2.0 ppb (2) N/A N/A 22.0 ppb (21) N/A 2.0 μg/m3 (2) 1.4 μg/m3 (6) 21.0