ID: 1564

AQSQID: 530090013

Site Name: Cheeka Peak

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

Updated: June 19, 2021, 8:57 p.m.

Location: Neah Bay (98357), WA

Reporting: True, Located: True

Current AQI: 22.0

Neah Bay (98357) WA, US: 48.2867, -124.6203

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
June 19, 2021, 7 p.m. N/A 0.1 ppb (1) 0.1 ppb (1) N/A N/A N/A 23.0 ppb (22) 0.09 ppb (2) N/A 1.2 μg/m3 (5) 22.0
 
June 19, 2021, 6 p.m. N/A 0.1 ppb (1) 0.1 ppb (1) N/A N/A N/A 25.0 ppb (24) 0.09 ppb (2) N/A 1.7 μg/m3 (8) 24.0
 
June 19, 2021, 5 p.m. N/A 0.1 ppb (1) 0.2 ppb (1) N/A N/A N/A 24.0 ppb (23) 0.08 ppb (2) N/A 1.4 μg/m3 (6) 23.0
 
June 19, 2021, 4 p.m. N/A 0.1 ppb (1) 0.4 ppb (1) N/A N/A N/A 23.0 ppb (22) 0.09 ppb (2) N/A 1.0 μg/m3 (5) 22.0
 
June 19, 2021, 3 p.m. N/A 0.1 ppb (1) 0.6 ppb (1) N/A N/A N/A 22.0 ppb (21) 0.09 ppb (2) N/A 0.6 μg/m3 (3) 21.0
 
June 19, 2021, 2 p.m. N/A 0.1 ppb (1) 1.2 ppb (2) N/A N/A N/A 20.0 ppb (19) 0.08 ppb (2) N/A 0.4 μg/m3 (2) 19.0
 
June 19, 2021, 1 p.m. N/A 0.1 ppb (1) 0.9 ppb (1) N/A N/A N/A 20.0 ppb (19) 0.08 ppb (2) N/A 0.5 μg/m3 (3) 19.0
 
June 19, 2021, noon N/A 0.0 ppb (0) 0.2 ppb (1) N/A N/A N/A 22.0 ppb (21) 0.09 ppb (2) N/A 0.4 μg/m3 (2) 21.0
 
June 19, 2021, 11 a.m. N/A 0.0 ppb (0) 0.4 ppb (1) N/A N/A N/A 21.0 ppb (20) 0.09 ppb (2) N/A 0.4 μg/m3 (2) 20.0
 
June 19, 2021, 10 a.m. N/A 0.0 ppb (0) 0.2 ppb (1) N/A N/A N/A 21.0 ppb (20) 0.1 ppb (2) N/A 0.5 μg/m3 (3) 20.0
 
June 19, 2021, 9 a.m. N/A 0.0 ppb (0) 0.1 ppb (1) N/A N/A N/A 22.0 ppb (21) 0.09 ppb (2) N/A 0.5 μg/m3 (3) 21.0
 
June 19, 2021, 8 a.m. N/A 0.0 ppb (0) 0.1 ppb (1) N/A N/A N/A N/A 0.09 ppb (2) N/A 0.5 μg/m3 (3) 3.0
 
June 19, 2021, 7 a.m. N/A 0.1 ppb (1) 0.4 ppb (1) N/A N/A N/A 22.0 ppb (21) 0.1 ppb (2) N/A 0.5 μg/m3 (3) 21.0
 
June 19, 2021, 6 a.m. N/A 0.0 ppb (0) 0.0 ppb (0) N/A N/A N/A 22.0 ppb (21) 0.11 ppb (2) N/A 0.4 μg/m3 (2) 21.0
 
June 19, 2021, 5 a.m. N/A 0.1 ppb (1) 0.1 ppb (1) N/A N/A N/A 23.0 ppb (22) N/A N/A 0.4 μg/m3 (2) 22.0
 
June 19, 2021, 4 a.m. N/A 0.1 ppb (1) 0.9 ppb (1) N/A N/A N/A 22.0 ppb (21) 0.11 ppb (2) N/A 0.5 μg/m3 (3) 21.0
 
June 19, 2021, 3 a.m. N/A 0.1 ppb (1) 1.0 ppb (1) N/A N/A N/A 23.0 ppb (22) 0.11 ppb (2) N/A 1.7 μg/m3 (8) 22.0
 
June 19, 2021, 2 a.m. N/A 0.0 ppb (0) 0.1 ppb (1) N/A N/A N/A N/A 0.1 ppb (2) N/A 1.9 μg/m3 (8) 8.0
 
June 19, 2021, 1 a.m. N/A 0.1 ppb (1) 0.1 ppb (1) N/A N/A N/A 24.0 ppb (23) 0.1 ppb (2) N/A 2.1 μg/m3 (9) 23.0
 
June 19, 2021, midnight N/A 0.0 ppb (0) 0.2 ppb (1) N/A N/A N/A 24.0 ppb (23) 0.1 ppb (2) N/A 2.4 μg/m3 (10) 23.0
 
June 18, 2021, 11 p.m. N/A 0.0 ppb (0) 0.1 ppb (1) N/A N/A N/A 26.0 ppb (25) 0.11 ppb (2) N/A 2.4 μg/m3 (10) 25.0
 
June 18, 2021, 10 p.m. N/A 0.1 ppb (1) 0.4 ppb (1) N/A N/A N/A 25.0 ppb (24) 0.11 ppb (2) N/A 2.6 μg/m3 (11) 24.0
 
June 18, 2021, 9 p.m. N/A 0.1 ppb (1) 0.2 ppb (1) N/A N/A N/A 25.0 ppb (24) 0.11 ppb (2) N/A 2.6 μg/m3 (11) 24.0
 
June 18, 2021, 8 p.m. N/A 0.1 ppb (1) 0.2 ppb (1) N/A N/A N/A 23.0 ppb (22) 0.12 ppb (2) N/A 1.7 μg/m3 (8) 22.0
 
June 18, 2021, 7 p.m. N/A 0.1 ppb (1) 0.7 ppb (1) N/A N/A N/A 22.0 ppb (21) 0.11 ppb (2) N/A 1.2 μg/m3 (5) 21.0
 
June 18, 2021, 6 p.m. N/A 0.1 ppb (1) 0.3 ppb (1) N/A N/A N/A 22.0 ppb (21) 0.11 ppb (2) N/A 0.6 μg/m3 (3) 21.0
 
June 18, 2021, 5 p.m. N/A 0.0 ppb (0) 0.1 ppb (1) N/A N/A N/A 22.0 ppb (21) 0.11 ppb (2) N/A 0.6 μg/m3 (3) 21.0
 
June 18, 2021, 4 p.m. N/A 0.0 ppb (0) 0.1 ppb (1) N/A N/A N/A 22.0 ppb (21) 0.11 ppb (2) N/A 0.5 μg/m3 (3) 21.0
 
June 18, 2021, 3 p.m. N/A 0.0 ppb (0) 0.5 ppb (1) N/A N/A N/A 22.0 ppb (21) 0.11 ppb (2) N/A 0.5 μg/m3 (3) 21.0
 
June 18, 2021, 2 p.m. N/A 0.0 ppb (0) 0.1 ppb (1) N/A N/A N/A 24.0 ppb (23) 0.11 ppb (2) N/A 0.5 μg/m3 (3) 23.0
 
June 18, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (24) 0.12 ppb (2) N/A 0.4 μg/m3 (2) 24.0
 
June 18, 2021, noon N/A 0.0 ppb (0) 0.5 ppb (1) N/A N/A N/A 25.0 ppb (24) 0.11 ppb (2) N/A 0.4 μg/m3 (2) 24.0
 
June 18, 2021, 11 a.m. N/A 0.0 ppb (0) 0.2 ppb (1) N/A N/A N/A 26.0 ppb (25) 0.13 ppb (2) N/A 0.5 μg/m3 (3) 25.0
 
June 18, 2021, 10 a.m. N/A 0.0 ppb (0) 0.1 ppb (1) N/A N/A N/A 27.0 ppb (25) 0.13 ppb (2) N/A 0.4 μg/m3 (2) 25.0
 
June 18, 2021, 9 a.m. N/A 0.0 ppb (0) 0.5 ppb (1) N/A N/A N/A 27.0 ppb (25) 0.13 ppb (2) N/A 0.4 μg/m3 (2) 25.0
 
June 18, 2021, 8 a.m. N/A 0.0 ppb (0) 0.4 ppb (1) N/A N/A N/A 26.0 ppb (25) 0.14 ppb (2) N/A 0.5 μg/m3 (3) 25.0
 
June 18, 2021, 7 a.m. N/A 0.0 ppb (0) 0.2 ppb (1) N/A N/A N/A 27.0 ppb (25) 0.14 ppb (2) N/A 0.8 μg/m3 (4) 25.0
 
June 18, 2021, 6 a.m. N/A 0.0 ppb (0) 0.3 ppb (1) N/A N/A N/A 27.0 ppb (25) 0.14 ppb (2) N/A 0.5 μg/m3 (3) 25.0
 
June 18, 2021, 5 a.m. N/A 0.0 ppb (0) 0.1 ppb (1) N/A N/A N/A 27.0 ppb (25) N/A N/A 1.0 μg/m3 (5) 25.0
 
June 18, 2021, 4 a.m. N/A 0.0 ppb (0) 0.1 ppb (1) N/A N/A N/A 25.0 ppb (24) 0.15 ppb (2) N/A 1.1 μg/m3 (5) 24.0
 
June 18, 2021, 3 a.m. N/A 0.0 ppb (0) 0.1 ppb (1) N/A N/A N/A 24.0 ppb (23) 0.16 ppb (3) N/A 0.9 μg/m3 (4) 23.0
 
June 18, 2021, 2 a.m. N/A 0.0 ppb (0) 0.7 ppb (1) N/A N/A N/A 25.0 ppb (24) 0.16 ppb (3) N/A 1.4 μg/m3 (6) 24.0
 
June 18, 2021, 1 a.m. N/A 0.0 ppb (0) 0.2 ppb (1) N/A N/A N/A 26.0 ppb (25) 0.16 ppb (3) N/A 1.6 μg/m3 (7) 25.0
 
June 18, 2021, midnight N/A 0.0 ppb (0) 0.2 ppb (1) N/A N/A N/A 25.0 ppb (24) 0.16 ppb (3) N/A 1.7 μg/m3 (8) 24.0
 
June 17, 2021, 11 p.m. N/A 0.0 ppb (0) 0.3 ppb (1) N/A N/A N/A 29.0 ppb (27) 0.16 ppb (3) N/A 1.8 μg/m3 (8) 27.0
 
June 17, 2021, 10 p.m. N/A 0.0 ppb (0) 0.3 ppb (1) N/A N/A N/A 27.0 ppb (25) 0.17 ppb (3) N/A 1.8 μg/m3 (8) 25.0
 
June 17, 2021, 9 p.m. N/A 0.0 ppb (0) 0.1 ppb (1) N/A N/A N/A 27.0 ppb (25) 0.17 ppb (3) N/A 1.8 μg/m3 (8) 25.0
 
June 17, 2021, 8 p.m. N/A 0.0 ppb (0) 0.4 ppb (1) N/A N/A N/A 26.0 ppb (25) 0.13 ppb (2) N/A 1.8 μg/m3 (8) 25.0
 
June 17, 2021, 7 p.m. N/A 0.0 ppb (0) 0.1 ppb (1) N/A N/A N/A 26.0 ppb (25) 0.09 ppb (2) N/A 1.4 μg/m3 (6) 25.0
 
June 17, 2021, 6 p.m. N/A 0.0 ppb (0) 0.5 ppb (1) N/A N/A N/A 24.0 ppb (23) 0.07 ppb (2) N/A 2.0 μg/m3 (9) 23.0
 
June 17, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (22) N/A N/A 2.2 μg/m3 (10) 22.0
 
June 17, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (21) N/A N/A 1.7 μg/m3 (8) 21.0
 
June 17, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (28) N/A N/A 1.1 μg/m3 (5) 28.0
 
June 17, 2021, 2 p.m. N/A 0.0 ppb (0) 0.1 ppb (1) N/A N/A N/A 28.0 ppb (26) N/A N/A 1.4 μg/m3 (6) 26.0
 
June 17, 2021, 1 p.m. N/A 0.0 ppb (0) 0.0 ppb (0) N/A N/A N/A 27.0 ppb (25) N/A N/A 1.3 μg/m3 (6) 25.0
 
June 17, 2021, noon N/A 0.0 ppb (0) 0.8 ppb (1) N/A N/A N/A 21.0 ppb (20) N/A N/A 1.0 μg/m3 (5) 20.0
 
June 17, 2021, 11 a.m. N/A 0.0 ppb (0) 0.5 ppb (1) N/A N/A N/A 29.0 ppb (27) N/A N/A 1.1 μg/m3 (5) 27.0
 
June 17, 2021, 10 a.m. N/A 0.0 ppb (0) 0.0 ppb (0) N/A N/A N/A 34.0 ppb (32) N/A N/A 1.0 μg/m3 (5) 32.0
 
June 17, 2021, 9 a.m. N/A 0.0 ppb (0) 0.0 ppb (0) N/A N/A N/A 34.0 ppb (32) N/A N/A 1.0 μg/m3 (5) 32.0
 
June 17, 2021, 8 a.m. N/A 0.0 ppb (0) 0.0 ppb (0) N/A N/A N/A 35.0 ppb (33) N/A N/A 0.9 μg/m3 (4) 33.0
 
June 17, 2021, 7 a.m. N/A 0.0 ppb (0) 0.1 ppb (1) N/A N/A N/A 34.0 ppb (32) N/A N/A 0.9 μg/m3 (4) 32.0
 
June 17, 2021, 6 a.m. N/A 0.0 ppb (0) 0.1 ppb (1) N/A N/A N/A 35.0 ppb (33) N/A N/A 1.1 μg/m3 (5) 33.0
 
June 17, 2021, 5 a.m. N/A 0.0 ppb (0) 0.1 ppb (1) N/A N/A N/A 35.0 ppb (33) N/A N/A 1.2 μg/m3 (5) 33.0
 
June 17, 2021, 4 a.m. N/A 0.1 ppb (1) 0.1 ppb (1) N/A N/A N/A 35.0 ppb (33) N/A N/A 1.1 μg/m3 (5) 33.0
 
June 17, 2021, 3 a.m. N/A 0.2 ppb (1) 0.3 ppb (1) N/A N/A N/A 30.0 ppb (28) N/A N/A 1.3 μg/m3 (6) 28.0
 
June 17, 2021, 2 a.m. N/A 0.3 ppb (1) 0.3 ppb (1) N/A N/A N/A N/A N/A N/A 2.1 μg/m3 (9) 9.0
 
June 17, 2021, 1 a.m. N/A 0.4 ppb (1) 0.5 ppb (1) N/A N/A N/A 24.0 ppb (23) N/A N/A 2.3 μg/m3 (10) 23.0
 
June 17, 2021, midnight N/A 0.6 ppb (1) 1.0 ppb (1) N/A N/A N/A 28.0 ppb (26) N/A N/A 2.1 μg/m3 (9) 26.0
 
June 16, 2021, 11 p.m. N/A 0.4 ppb (1) 0.2 ppb (1) N/A N/A N/A 28.0 ppb (26) N/A N/A 1.9 μg/m3 (8) 26.0
 
June 16, 2021, 10 p.m. N/A 0.0 ppb (0) -0.1 ppb (0) N/A N/A N/A 27.0 ppb (25) N/A N/A 1.8 μg/m3 (8) 25.0
 
June 16, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (26) N/A N/A N/A 26.0
 
June 16, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (25) N/A N/A 1.7 μg/m3 (8) 25.0
 
June 16, 2021, 7 p.m. N/A -0.1 ppb (0) 0.1 ppb (1) N/A N/A N/A 29.0 ppb (27) N/A N/A 1.3 μg/m3 (6) 27.0
 
June 16, 2021, 6 p.m. N/A 0.0 ppb (0) 0.2 ppb (1) N/A N/A N/A 27.0 ppb (25) N/A N/A 1.4 μg/m3 (6) 25.0
 
June 16, 2021, 5 p.m. N/A 0.0 ppb (0) 0.2 ppb (1) N/A N/A N/A 22.0 ppb (21) N/A N/A 1.6 μg/m3 (7) 21.0
 
June 16, 2021, 4 p.m. N/A 0.0 ppb (0) 0.1 ppb (1) N/A N/A N/A 24.0 ppb (23) N/A N/A 1.4 μg/m3 (6) 23.0
 
June 16, 2021, 3 p.m. N/A 0.0 ppb (0) 0.2 ppb (1) N/A N/A N/A 27.0 ppb (25) N/A N/A 1.3 μg/m3 (6) 25.0
 
June 16, 2021, 2 p.m. N/A 0.0 ppb (0) 0.0 ppb (0) N/A N/A N/A 27.0 ppb (25) N/A N/A 1.2 μg/m3 (5) 25.0
 
June 16, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (26) N/A N/A 0.9 μg/m3 (4) 26.0
 
June 16, 2021, noon N/A 0.0 ppb (0) 0.0 ppb (0) N/A N/A N/A 30.0 ppb (28) N/A N/A 0.7 μg/m3 (3) 28.0
 
June 16, 2021, 11 a.m. N/A 0.0 ppb (0) 0.0 ppb (0) N/A N/A N/A 31.0 ppb (29) N/A N/A 0.5 μg/m3 (3) 29.0
 
June 16, 2021, 10 a.m. N/A 0.0 ppb (0) 0.1 ppb (1) N/A N/A N/A 32.0 ppb (30) N/A N/A 0.9 μg/m3 (4) 30.0
 
June 16, 2021, 9 a.m. N/A 0.0 ppb (0) 0.0 ppb (0) N/A N/A N/A 31.0 ppb (29) N/A N/A 0.7 μg/m3 (3) 29.0
 
June 16, 2021, 8 a.m. N/A 0.0 ppb (0) 0.1 ppb (1) N/A N/A N/A 29.0 ppb (27) N/A N/A 0.4 μg/m3 (2) 27.0
 
June 16, 2021, 7 a.m. N/A 0.0 ppb (0) 0.1 ppb (1) N/A N/A N/A 29.0 ppb (27) N/A N/A 0.5 μg/m3 (3) 27.0
 
June 16, 2021, 6 a.m. N/A 0.0 ppb (0) 0.0 ppb (0) N/A N/A N/A 29.0 ppb (27) N/A N/A 0.4 μg/m3 (2) 27.0
 
June 16, 2021, 5 a.m. N/A 0.0 ppb (0) 0.0 ppb (0) N/A N/A N/A 29.0 ppb (27) N/A N/A 0.4 μg/m3 (2) 27.0
 
June 16, 2021, 4 a.m. N/A 0.0 ppb (0) 0.0 ppb (0) N/A N/A N/A 30.0 ppb (28) N/A N/A 1.0 μg/m3 (5) 28.0
 
June 16, 2021, 3 a.m. N/A 0.0 ppb (0) 0.1 ppb (1) N/A N/A N/A 31.0 ppb (29) N/A N/A 1.5 μg/m3 (7) 29.0
 
June 16, 2021, 2 a.m. N/A 0.0 ppb (0) 0.3 ppb (1) N/A N/A N/A 32.0 ppb (30) N/A N/A 1.6 μg/m3 (7) 30.0
 
June 16, 2021, 1 a.m. N/A 0.0 ppb (0) 0.0 ppb (0) N/A N/A N/A 32.0 ppb (30) N/A N/A 1.6 μg/m3 (7) 30.0
 
June 16, 2021, midnight N/A 0.0 ppb (0) 0.1 ppb (1) N/A N/A N/A 32.0 ppb (30) N/A N/A 1.7 μg/m3 (8) 30.0
 
June 15, 2021, 11 p.m. N/A 0.0 ppb (0) 0.1 ppb (1) N/A N/A N/A 32.0 ppb (30) N/A N/A 1.6 μg/m3 (7) 30.0
 
June 15, 2021, 10 p.m. N/A 0.0 ppb (0) 0.0 ppb (0) N/A N/A N/A 30.0 ppb (28) N/A N/A 1.7 μg/m3 (8) 28.0
 
June 15, 2021, 9 p.m. N/A 0.0 ppb (0) 0.0 ppb (0) N/A N/A N/A 27.0 ppb (25) N/A N/A 2.1 μg/m3 (9) 25.0
 
June 15, 2021, 8 p.m. N/A 0.0 ppb (0) 0.1 ppb (1) N/A N/A N/A 29.0 ppb (27) N/A N/A 1.9 μg/m3 (8) 27.0
 
June 15, 2021, 7 p.m. N/A 0.0 ppb (0) 0.1 ppb (1) N/A N/A N/A 27.0 ppb (25) N/A N/A 1.9 μg/m3 (8) 25.0
 
June 15, 2021, 6 p.m. N/A 0.0 ppb (0) 0.1 ppb (1) N/A N/A N/A 25.0 ppb (24) N/A N/A 1.1 μg/m3 (5) 24.0
 
June 15, 2021, 5 p.m. N/A 0.0 ppb (0) 0.1 ppb (1) N/A N/A N/A 25.0 ppb (24) N/A N/A 0.9 μg/m3 (4) 24.0
 
June 15, 2021, 4 p.m. N/A 0.0 ppb (0) 0.1 ppb (1) N/A N/A N/A 25.0 ppb (24) N/A N/A 1.0 μg/m3 (5) 24.0
 
June 15, 2021, 3 p.m. N/A 0.0 ppb (0) 0.0 ppb (0) N/A N/A N/A 25.0 ppb (24) N/A N/A 1.0 μg/m3 (5) 24.0
 
June 15, 2021, 2 p.m. N/A 0.0 ppb (0) 0.0 ppb (0) N/A N/A N/A 26.0 ppb (25) N/A N/A 0.7 μg/m3 (3) 25.0
 
June 15, 2021, 1 p.m. N/A 0.0 ppb (0) 0.1 ppb (1) N/A N/A N/A 27.0 ppb (25) N/A N/A 0.6 μg/m3 (3) 25.0
 
June 15, 2021, noon N/A 0.0 ppb (0) 0.1 ppb (1) N/A N/A N/A 29.0 ppb (27) N/A N/A 0.6 μg/m3 (3) 27.0
 
June 15, 2021, 11 a.m. N/A 0.0 ppb (0) 0.1 ppb (1) N/A N/A N/A 28.0 ppb (26) N/A N/A 0.5 μg/m3 (3) 26.0
 
June 15, 2021, 10 a.m. N/A 0.1 ppb (1) 0.2 ppb (1) N/A N/A N/A 28.0 ppb (26) N/A N/A 0.5 μg/m3 (3) 26.0
 
June 15, 2021, 9 a.m. N/A 0.1 ppb (1) 0.2 ppb (1) N/A N/A N/A 26.0 ppb (25) N/A N/A 0.5 μg/m3 (3) 25.0
 
June 15, 2021, 8 a.m. N/A 0.1 ppb (1) 0.1 ppb (1) N/A N/A N/A 27.0 ppb (25) N/A N/A 0.4 μg/m3 (2) 25.0
 
June 15, 2021, 7 a.m. N/A 0.0 ppb (0) 0.0 ppb (0) N/A N/A N/A 28.0 ppb (26) N/A N/A 0.5 μg/m3 (3) 26.0
 
June 15, 2021, 6 a.m. N/A 0.0 ppb (0) 0.0 ppb (0) N/A N/A N/A 28.0 ppb (26) N/A N/A 0.7 μg/m3 (3) 26.0
 
June 15, 2021, 5 a.m. N/A 0.0 ppb (0) 0.0 ppb (0) N/A N/A N/A 29.0 ppb (27) N/A N/A 1.6 μg/m3 (7) 27.0
 
June 15, 2021, 4 a.m. N/A 0.0 ppb (0) 0.0 ppb (0) N/A N/A N/A 28.0 ppb (26) N/A N/A 2.1 μg/m3 (9) 26.0
 
June 15, 2021, 3 a.m. N/A 0.0 ppb (0) 0.0 ppb (0) N/A N/A N/A 28.0 ppb (26) N/A N/A 2.2 μg/m3 (10) 26.0
 
June 15, 2021, 2 a.m. N/A 0.0 ppb (0) 0.1 ppb (1) N/A N/A N/A N/A N/A N/A 2.3 μg/m3 (10) 10.0
 
June 15, 2021, 1 a.m. N/A 0.1 ppb (1) 0.1 ppb (1) N/A N/A N/A 27.0 ppb (25) N/A N/A 2.3 μg/m3 (10) 25.0
 
June 15, 2021, midnight N/A 0.1 ppb (1) 0.2 ppb (1) N/A N/A N/A 29.0 ppb (27) N/A N/A 2.5 μg/m3 (11) 27.0
 
June 14, 2021, 11 p.m. N/A 0.1 ppb (1) 0.2 ppb (1) N/A N/A N/A 31.0 ppb (29) N/A N/A 2.5 μg/m3 (11) 29.0
 
June 14, 2021, 10 p.m. N/A 0.0 ppb (0) 0.2 ppb (1) N/A N/A N/A 31.0 ppb (29) N/A N/A 2.7 μg/m3 (12) 29.0
 
June 14, 2021, 9 p.m. N/A 0.0 ppb (0) 0.2 ppb (1) N/A N/A N/A N/A N/A N/A 2.6 μg/m3 (11) 11.0
 
June 14, 2021, 8 p.m. N/A 0.1 ppb (1) 0.2 ppb (1) N/A N/A N/A N/A N/A N/A 2.5 μg/m3 (11) 11.0
 
June 14, 2021, 7 p.m. N/A 0.0 ppb (0) 0.1 ppb (1) N/A N/A N/A 32.0 ppb (30) N/A N/A 2.4 μg/m3 (10) 30.0
 
June 14, 2021, 6 p.m. N/A 0.0 ppb (0) 0.1 ppb (1) N/A N/A N/A 31.0 ppb (29) N/A N/A 2.3 μg/m3 (10) 29.0
 
June 14, 2021, 5 p.m. N/A 0.0 ppb (0) 0.1 ppb (1) N/A N/A N/A 31.0 ppb (29) N/A N/A 2.1 μg/m3 (9) 29.0
 
June 14, 2021, 4 p.m. N/A 0.0 ppb (0) 0.1 ppb (1) N/A N/A N/A 34.0 ppb (32) N/A N/A 2.0 μg/m3 (9) 32.0
 
June 14, 2021, 3 p.m. N/A 0.0 ppb (0) 0.0 ppb (0) N/A N/A N/A 37.0 ppb (35) N/A N/A 2.0 μg/m3 (9) 35.0
 
June 14, 2021, 2 p.m. N/A 0.0 ppb (0) 0.0 ppb (0) N/A N/A N/A 37.0 ppb (35) N/A N/A 1.5 μg/m3 (7) 35.0
 
June 14, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (34) N/A N/A 0.8 μg/m3 (4) 34.0
 
June 14, 2021, noon N/A 0.0 ppb (0) 0.1 ppb (1) N/A N/A N/A 36.0 ppb (34) N/A N/A 0.9 μg/m3 (4) 34.0
 
June 14, 2021, 11 a.m. N/A 0.0 ppb (0) 0.2 ppb (1) N/A N/A N/A 32.0 ppb (30) N/A N/A 0.5 μg/m3 (3) 30.0
 
June 14, 2021, 10 a.m. N/A 0.0 ppb (0) 0.2 ppb (1) N/A N/A N/A 27.0 ppb (25) N/A N/A 0.4 μg/m3 (2) 25.0
 
June 14, 2021, 9 a.m. N/A 0.0 ppb (0) 0.2 ppb (1) N/A N/A N/A 30.0 ppb (28) N/A N/A 0.5 μg/m3 (3) 28.0
 
June 14, 2021, 8 a.m. N/A 0.0 ppb (0) 0.1 ppb (1) N/A N/A N/A 36.0 ppb (34) N/A N/A 0.6 μg/m3 (3) 34.0
 
June 14, 2021, 7 a.m. N/A 0.0 ppb (0) 0.1 ppb (1) N/A N/A N/A 33.0 ppb (31) N/A N/A 0.4 μg/m3 (2) 31.0
 
June 14, 2021, 6 a.m. N/A 0.1 ppb (1) 0.1 ppb (1) N/A N/A N/A 30.0 ppb (28) N/A N/A 0.4 μg/m3 (2) 28.0
 
June 14, 2021, 5 a.m. N/A 0.1 ppb (1) 0.1 ppb (1) N/A N/A N/A 28.0 ppb (26) N/A N/A 0.5 μg/m3 (3) 26.0
 
June 14, 2021, 4 a.m. N/A 0.0 ppb (0) 0.0 ppb (0) N/A N/A N/A 25.0 ppb (24) N/A N/A 0.8 μg/m3 (4) 24.0
 
June 14, 2021, 3 a.m. N/A 0.0 ppb (0) 0.1 ppb (1) N/A N/A N/A 26.0 ppb (25) N/A N/A 1.0 μg/m3 (5) 25.0
 
June 14, 2021, 2 a.m. N/A 0.0 ppb (0) 0.0 ppb (0) N/A N/A N/A 30.0 ppb (28) N/A N/A 1.6 μg/m3 (7) 28.0
 
June 14, 2021, 1 a.m. N/A 0.0 ppb (0) 0.1 ppb (1) N/A N/A N/A 34.0 ppb (32) N/A N/A 1.6 μg/m3 (7) 32.0
 
June 14, 2021, midnight N/A 0.0 ppb (0) 0.1 ppb (1) N/A N/A N/A 33.0 ppb (31) N/A N/A 0.9 μg/m3 (4) 31.0
 
June 13, 2021, 11 p.m. N/A 0.0 ppb (0) 0.1 ppb (1) N/A N/A N/A 30.0 ppb (28) N/A N/A 0.5 μg/m3 (3) 28.0
 
June 13, 2021, 10 p.m. N/A 0.1 ppb (1) 0.1 ppb (1) N/A N/A N/A 32.0 ppb (30) N/A N/A 1.3 μg/m3 (6) 30.0
 
June 13, 2021, 9 p.m. N/A 0.0 ppb (0) 0.1 ppb (1) N/A N/A N/A 29.0 ppb (27) N/A N/A 0.5 μg/m3 (3) 27.0
 
June 13, 2021, 8 p.m. N/A 0.0 ppb (0) 0.0 ppb (0) N/A N/A N/A 31.0 ppb (29) N/A N/A 0.5 μg/m3 (3) 29.0
 
June 13, 2021, 7 p.m. N/A 0.0 ppb (0) 0.1 ppb (1) N/A N/A N/A 32.0 ppb (30) N/A N/A 1.1 μg/m3 (5) 30.0
 
June 13, 2021, 6 p.m. N/A 0.0 ppb (0) 0.0 ppb (0) N/A N/A N/A 34.0 ppb (32) N/A N/A 1.1 μg/m3 (5) 32.0
 
June 13, 2021, 5 p.m. N/A 0.0 ppb (0) 0.0 ppb (0) N/A N/A N/A 31.0 ppb (29) N/A N/A 0.6 μg/m3 (3) 29.0
 
June 13, 2021, 4 p.m. N/A 0.0 ppb (0) 0.0 ppb (0) N/A N/A N/A 30.0 ppb (28) N/A N/A 0.6 μg/m3 (3) 28.0
 
June 13, 2021, 3 p.m. N/A 0.0 ppb (0) 0.0 ppb (0) N/A N/A N/A 32.0 ppb (30) N/A N/A 0.7 μg/m3 (3) 30.0
 
June 13, 2021, 2 p.m. N/A 0.0 ppb (0) 0.0 ppb (0) N/A N/A N/A 33.0 ppb (31) N/A N/A 0.7 μg/m3 (3) 31.0
 
June 13, 2021, 1 p.m. N/A 0.0 ppb (0) 0.2 ppb (1) N/A N/A N/A 31.0 ppb (29) N/A N/A 0.4 μg/m3 (2) 29.0
 
June 13, 2021, noon N/A 0.0 ppb (0) 0.2 ppb (1) N/A N/A N/A 31.0 ppb (29) N/A N/A 0.4 μg/m3 (2) 29.0
 
June 13, 2021, 11 a.m. N/A -0.1 ppb (0) 0.1 ppb (1) N/A N/A N/A 32.0 ppb (30) N/A N/A 0.8 μg/m3 (4) 30.0
 
June 13, 2021, 10 a.m. N/A -0.1 ppb (0) 0.1 ppb (1) N/A N/A N/A 33.0 ppb (31) N/A N/A 0.9 μg/m3 (4) 31.0
 
June 13, 2021, 9 a.m. N/A -0.1 ppb (0) 0.8 ppb (1) N/A N/A N/A 34.0 ppb (32) N/A N/A 1.6 μg/m3 (7) 32.0
 
June 13, 2021, 8 a.m. N/A -0.1 ppb (0) 0.7 ppb (1) N/A N/A N/A 33.0 ppb (31) N/A N/A 1.6 μg/m3 (7) 31.0
 
June 13, 2021, 7 a.m. N/A 0.0 ppb (0) 0.6 ppb (1) N/A N/A N/A 34.0 ppb (32) N/A N/A 1.6 μg/m3 (7) 32.0
 
June 13, 2021, 6 a.m. N/A -0.1 ppb (0) 0.8 ppb (1) N/A N/A N/A 37.0 ppb (35) N/A N/A 1.9 μg/m3 (8) 35.0
 
June 13, 2021, 5 a.m. N/A 0.0 ppb (0) 0.9 ppb (1) N/A N/A N/A 36.0 ppb (34) N/A N/A 2.0 μg/m3 (9) 34.0
 
June 13, 2021, 4 a.m. N/A 0.0 ppb (0) 0.9 ppb (1) N/A N/A N/A 35.0 ppb (33) N/A N/A 2.0 μg/m3 (9) 33.0
 
June 13, 2021, 3 a.m. N/A 0.0 ppb (0) 0.6 ppb (1) N/A N/A N/A 38.0 ppb (36) N/A N/A 1.9 μg/m3 (8) 36.0
 
June 13, 2021, 2 a.m. N/A 0.0 ppb (0) 0.6 ppb (1) N/A N/A N/A N/A N/A N/A 1.9 μg/m3 (8) 8.0
 
June 13, 2021, 1 a.m. N/A 0.0 ppb (0) 0.4 ppb (1) N/A N/A N/A 36.0 ppb (34) N/A N/A 1.8 μg/m3 (8) 34.0
 
June 13, 2021, midnight N/A 0.0 ppb (0) 0.4 ppb (1) N/A N/A N/A 34.0 ppb (32) N/A N/A 1.5 μg/m3 (7) 32.0
 
June 12, 2021, 11 p.m. N/A 0.0 ppb (0) 0.8 ppb (1) N/A N/A N/A 32.0 ppb (30) N/A N/A 1.9 μg/m3 (8) 30.0
 
June 12, 2021, 10 p.m. N/A 0.1 ppb (1) 0.9 ppb (1) N/A N/A N/A 29.0 ppb (27) N/A N/A 2.0 μg/m3 (9) 27.0
 
June 12, 2021, 9 p.m. N/A 0.0 ppb (0) 0.5 ppb (1) N/A N/A N/A 26.0 ppb (25) N/A N/A 2.2 μg/m3 (10) 25.0
 
June 12, 2021, 8 p.m. N/A 0.0 ppb (0) 0.4 ppb (1) N/A N/A N/A 27.0 ppb (25) N/A N/A 2.2 μg/m3 (10) 25.0