AQSQID: 530090013

Site Name: Cheeka Peak

Location: Neah Bay (98357), WA

Reporting: True, Located: True

Current AQI: 31.0

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
March 31, 2020, 7 p.m. N/A 0.0 ppb (0) 0.1 ppb (0) N/A N/A 0.0 ppb (0) 40.0 ppb (31) 0.1 ppb (1) N/A 1.2 μg/m3 (5) 31.0
 
March 31, 2020, 6 p.m. N/A 0.0 ppb (0) 0.1 ppb (0) N/A N/A 0.0 ppb (0) 38.0 ppb (29) N/A N/A 0.8 μg/m3 (3) 29.0
 
March 31, 2020, 5 p.m. N/A 0.0 ppb (0) 0.2 ppb (0) N/A N/A 0.0 ppb (0) 38.0 ppb (29) N/A N/A 0.3 μg/m3 (1) 29.0
 
March 31, 2020, 4 p.m. N/A 0.0 ppb (0) 0.2 ppb (0) N/A N/A 0.0 ppb (0) 38.0 ppb (29) N/A N/A 0.4 μg/m3 (2) 29.0
 
March 31, 2020, 3 p.m. N/A 0.0 ppb (0) 0.2 ppb (0) N/A N/A 0.0 ppb (0) 40.0 ppb (31) 0.13 ppb (1) N/A 0.5 μg/m3 (2) 31.0
 
March 31, 2020, 2 p.m. N/A N/A 0.1 ppb (0) N/A N/A 0.0 ppb (0) 40.0 ppb (31) 0.13 ppb (1) N/A 0.5 μg/m3 (2) 31.0
 
March 31, 2020, 1 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 40.0 ppb (31) 0.12 ppb (1) N/A 0.4 μg/m3 (2) 31.0
 
March 31, 2020, noon N/A 0.0 ppb (0) 0.2 ppb (0) N/A N/A 0.0 ppb (0) 39.0 ppb (30) 0.13 ppb (1) N/A 0.6 μg/m3 (2) 30.0
 
March 31, 2020, 11 a.m. N/A 0.0 ppb (0) 0.1 ppb (0) N/A N/A N/A 39.0 ppb (30) 0.13 ppb (1) N/A 0.4 μg/m3 (2) 30.0
 
March 31, 2020, 10 a.m. N/A 0.0 ppb (0) 0.1 ppb (0) N/A N/A 0.0 ppb (0) 40.0 ppb (31) 0.15 ppb (2) N/A 1.1 μg/m3 (5) 31.0
 
March 31, 2020, 9 a.m. N/A 0.0 ppb (0) 0.0 ppb (0) N/A N/A 0.0 ppb (0) 38.0 ppb (29) 0.15 ppb (2) N/A 0.7 μg/m3 (3) 29.0
 
March 31, 2020, 8 a.m. N/A 0.0 ppb (0) 0.1 ppb (0) N/A N/A 0.0 ppb (0) 41.0 ppb (32) 0.14 ppb (2) N/A 1.2 μg/m3 (5) 32.0
 
March 31, 2020, 7 a.m. N/A 0.0 ppb (0) 0.1 ppb (0) N/A N/A 0.0 ppb (0) 42.0 ppb (32) 0.14 ppb (2) N/A 1.3 μg/m3 (5) 32.0
 
March 31, 2020, 6 a.m. N/A 0.0 ppb (0) 0.1 ppb (0) N/A N/A 0.0 ppb (0) 41.0 ppb (32) N/A N/A 1.4 μg/m3 (6) 32.0
 
March 31, 2020, 5 a.m. N/A 0.0 ppb (0) 0.1 ppb (0) N/A N/A 0.0 ppb (0) 40.0 ppb (31) 0.14 ppb (2) N/A 1.3 μg/m3 (5) 31.0
 
March 31, 2020, 4 a.m. N/A 0.0 ppb (0) 0.1 ppb (0) N/A N/A 0.0 ppb (0) 42.0 ppb (32) 0.14 ppb (2) N/A 1.4 μg/m3 (6) 32.0
 
March 31, 2020, 3 a.m. N/A 0.0 ppb (0) 0.1 ppb (0) N/A N/A 0.0 ppb (0) 42.0 ppb (32) 0.14 ppb (2) N/A 1.4 μg/m3 (6) 32.0
 
March 31, 2020, 2 a.m. N/A 0.0 ppb (0) 0.1 ppb (0) N/A N/A 0.0 ppb (0) 43.0 ppb (33) 0.14 ppb (2) N/A 1.3 μg/m3 (5) 33.0
 
March 31, 2020, 1 a.m. N/A 0.0 ppb (0) 0.2 ppb (0) N/A N/A 0.0 ppb (0) 43.0 ppb (33) 0.14 ppb (2) N/A 1.2 μg/m3 (5) 33.0
 
March 31, 2020, midnight N/A 0.0 ppb (0) 0.2 ppb (0) N/A N/A 0.0 ppb (0) 41.0 ppb (32) 0.14 ppb (2) N/A 1.5 μg/m3 (6) 32.0
 
March 30, 2020, 11 p.m. N/A 0.0 ppb (0) 0.2 ppb (0) N/A N/A 0.0 ppb (0) 42.0 ppb (32) 0.14 ppb (2) N/A N/A 32.0
 
March 30, 2020, 10 p.m. N/A 0.0 ppb (0) 0.2 ppb (0) N/A N/A 0.0 ppb (0) 42.0 ppb (32) 0.15 ppb (2) N/A N/A 32.0
 
March 30, 2020, 9 p.m. N/A 0.0 ppb (0) 0.1 ppb (0) N/A N/A 0.0 ppb (0) 42.0 ppb (32) 0.14 ppb (2) N/A N/A 32.0
 
March 30, 2020, 8 p.m. N/A 0.0 ppb (0) 0.1 ppb (0) N/A N/A 0.0 ppb (0) 43.0 ppb (33) 0.13 ppb (1) N/A 2.4 μg/m3 (10) 33.0
 
March 30, 2020, 7 p.m. N/A 0.0 ppb (0) 0.2 ppb (0) N/A N/A 0.0 ppb (0) 44.0 ppb (34) 0.12 ppb (1) N/A 1.6 μg/m3 (7) 34.0
 
March 30, 2020, 6 p.m. N/A 0.0 ppb (0) 0.2 ppb (0) N/A N/A 0.0 ppb (0) 44.0 ppb (34) 0.12 ppb (1) N/A 0.7 μg/m3 (3) 34.0
 
March 30, 2020, 5 p.m. N/A 0.0 ppb (0) 0.2 ppb (0) N/A N/A 0.0 ppb (0) 42.0 ppb (32) 0.12 ppb (1) N/A 0.6 μg/m3 (2) 32.0
 
March 30, 2020, 4 p.m. N/A 0.0 ppb (0) 0.1 ppb (0) N/A N/A 0.0 ppb (0) 38.0 ppb (29) 0.12 ppb (1) N/A 0.7 μg/m3 (3) 29.0
 
March 30, 2020, 3 p.m. N/A 0.0 ppb (0) 0.2 ppb (0) N/A N/A 0.0 ppb (0) 38.0 ppb (29) 0.12 ppb (1) N/A 0.6 μg/m3 (2) 29.0
 
March 30, 2020, 2 p.m. N/A 0.0 ppb (0) 0.2 ppb (0) N/A N/A 0.0 ppb (0) 39.0 ppb (30) 0.13 ppb (1) N/A 0.5 μg/m3 (2) 30.0
 
March 30, 2020, 1 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 39.0 ppb (30) 0.12 ppb (1) N/A 0.9 μg/m3 (4) 30.0
 
March 30, 2020, noon N/A 0.0 ppb (0) 0.1 ppb (0) N/A N/A 0.0 ppb (0) 39.0 ppb (30) 0.13 ppb (1) N/A 1.0 μg/m3 (4) 30.0
 
March 30, 2020, 11 a.m. N/A 0.0 ppb (0) 0.1 ppb (0) N/A N/A N/A 41.0 ppb (32) 0.12 ppb (1) N/A 1.5 μg/m3 (6) 32.0
 
March 30, 2020, 10 a.m. N/A 0.0 ppb (0) 0.1 ppb (0) N/A N/A 0.0 ppb (0) 45.0 ppb (35) N/A N/A 0.5 μg/m3 (2) 35.0
 
March 30, 2020, 9 a.m. N/A 0.0 ppb (0) 0.1 ppb (0) N/A N/A 0.0 ppb (0) 44.0 ppb (34) N/A N/A 0.4 μg/m3 (2) 34.0
 
March 30, 2020, 8 a.m. N/A 0.0 ppb (0) 0.1 ppb (0) N/A N/A 0.0 ppb (0) 41.0 ppb (32) 0.1 ppb (1) N/A 0.6 μg/m3 (2) 32.0
 
March 30, 2020, 7 a.m. N/A 0.0 ppb (0) 0.0 ppb (0) N/A N/A 0.0 ppb (0) 40.0 ppb (31) 0.11 ppb (1) N/A 0.6 μg/m3 (2) 31.0
 
March 30, 2020, 6 a.m. N/A 0.0 ppb (0) 0.1 ppb (0) N/A N/A 0.0 ppb (0) 42.0 ppb (32) N/A N/A 0.6 μg/m3 (2) 32.0
 
March 30, 2020, 5 a.m. N/A 0.0 ppb (0) 0.1 ppb (0) N/A N/A 0.0 ppb (0) 36.0 ppb (28) 0.11 ppb (1) N/A 0.4 μg/m3 (2) 28.0
 
March 30, 2020, 4 a.m. N/A 0.0 ppb (0) 0.1 ppb (0) N/A N/A 0.0 ppb (0) 36.0 ppb (28) 0.11 ppb (1) N/A 0.4 μg/m3 (2) 28.0
 
March 30, 2020, 3 a.m. N/A 0.0 ppb (0) 0.1 ppb (0) N/A N/A 0.0 ppb (0) 38.0 ppb (29) 0.12 ppb (1) N/A 0.5 μg/m3 (2) 29.0
 
March 30, 2020, 2 a.m. N/A 0.0 ppb (0) 0.1 ppb (0) N/A N/A 0.0 ppb (0) N/A 0.13 ppb (1) N/A 0.8 μg/m3 (3) 3.0
 
March 30, 2020, 1 a.m. N/A 0.0 ppb (0) 0.1 ppb (0) N/A N/A 0.0 ppb (0) 42.0 ppb (32) 0.13 ppb (1) N/A 0.9 μg/m3 (4) 32.0
 
March 30, 2020, midnight N/A 0.0 ppb (0) 0.1 ppb (0) N/A N/A 0.0 ppb (0) 43.0 ppb (33) 0.12 ppb (1) N/A 0.9 μg/m3 (4) 33.0
 
March 29, 2020, 11 p.m. N/A 0.0 ppb (0) 0.1 ppb (0) N/A N/A 0.0 ppb (0) 43.0 ppb (33) 0.13 ppb (1) N/A 1.7 μg/m3 (7) 33.0
 
March 29, 2020, 10 p.m. N/A 0.0 ppb (0) 0.1 ppb (0) N/A N/A 0.0 ppb (0) 44.0 ppb (34) 0.14 ppb (2) N/A 1.7 μg/m3 (7) 34.0
 
March 29, 2020, 9 p.m. N/A 0.0 ppb (0) 0.1 ppb (0) N/A N/A 0.0 ppb (0) 43.0 ppb (33) 0.14 ppb (2) N/A 1.0 μg/m3 (4) 33.0
 
March 29, 2020, 8 p.m. N/A 0.0 ppb (0) 0.1 ppb (0) N/A N/A 0.0 ppb (0) 43.0 ppb (33) 0.14 ppb (2) N/A 0.8 μg/m3 (3) 33.0
 
March 29, 2020, 7 p.m. N/A 0.0 ppb (0) 0.1 ppb (0) N/A N/A 0.0 ppb (0) 43.0 ppb (33) 0.13 ppb (1) N/A 1.1 μg/m3 (5) 33.0
 
March 29, 2020, 6 p.m. N/A 0.0 ppb (0) 0.1 ppb (0) N/A N/A 0.0 ppb (0) 44.0 ppb (34) 0.13 ppb (1) N/A 0.8 μg/m3 (3) 34.0
 
March 29, 2020, 5 p.m. N/A 0.0 ppb (0) 0.1 ppb (0) N/A N/A 0.0 ppb (0) 44.0 ppb (34) 0.13 ppb (1) N/A 0.8 μg/m3 (3) 34.0
 
March 29, 2020, 4 p.m. N/A 0.0 ppb (0) 0.1 ppb (0) N/A N/A 0.0 ppb (0) 43.0 ppb (33) 0.13 ppb (1) N/A 0.4 μg/m3 (2) 33.0
 
March 29, 2020, 3 p.m. N/A 0.0 ppb (0) 0.2 ppb (0) N/A N/A 0.0 ppb (0) 43.0 ppb (33) 0.14 ppb (2) N/A 0.5 μg/m3 (2) 33.0
 
March 29, 2020, 2 p.m. N/A 0.0 ppb (0) 0.2 ppb (0) N/A N/A 0.0 ppb (0) 43.0 ppb (33) 0.13 ppb (1) N/A 0.4 μg/m3 (2) 33.0
 
March 29, 2020, 1 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 42.0 ppb (32) 0.12 ppb (1) N/A 0.5 μg/m3 (2) 32.0
 
March 29, 2020, noon N/A 0.0 ppb (0) 0.5 ppb (0) N/A N/A 0.0 ppb (0) 39.0 ppb (30) N/A N/A 0.4 μg/m3 (2) 30.0
 
March 29, 2020, 11 a.m. N/A 0.0 ppb (0) 0.1 ppb (0) N/A N/A N/A 38.0 ppb (29) N/A N/A 0.3 μg/m3 (1) 29.0
 
March 29, 2020, 10 a.m. N/A 0.0 ppb (0) 0.1 ppb (0) N/A N/A 0.0 ppb (0) 38.0 ppb (29) 0.11 ppb (1) N/A 0.4 μg/m3 (2) 29.0
 
March 29, 2020, 9 a.m. N/A 0.0 ppb (0) 0.1 ppb (0) N/A N/A 0.0 ppb (0) 38.0 ppb (29) 0.11 ppb (1) N/A 0.4 μg/m3 (2) 29.0
 
March 29, 2020, 8 a.m. N/A 0.0 ppb (0) 0.1 ppb (0) N/A N/A 0.0 ppb (0) 37.0 ppb (28) 0.11 ppb (1) N/A 0.3 μg/m3 (1) 28.0
 
March 29, 2020, 7 a.m. N/A 0.0 ppb (0) 0.1 ppb (0) N/A N/A 0.0 ppb (0) 38.0 ppb (29) 0.11 ppb (1) N/A 0.4 μg/m3 (2) 29.0
 
March 29, 2020, 6 a.m. N/A 0.0 ppb (0) 0.1 ppb (0) N/A N/A 0.0 ppb (0) 39.0 ppb (30) N/A N/A 0.3 μg/m3 (1) 30.0
 
March 29, 2020, 5 a.m. N/A 0.0 ppb (0) 0.1 ppb (0) N/A N/A 0.0 ppb (0) 40.0 ppb (31) 0.11 ppb (1) N/A 0.3 μg/m3 (1) 31.0
 
March 29, 2020, 4 a.m. N/A 0.0 ppb (0) 0.1 ppb (0) N/A N/A N/A 38.0 ppb (29) 0.11 ppb (1) N/A 0.4 μg/m3 (2) 29.0
 
March 29, 2020, 3 a.m. N/A 0.0 ppb (0) 0.1 ppb (0) N/A N/A 0.0 ppb (0) 38.0 ppb (29) 0.11 ppb (1) N/A 0.4 μg/m3 (2) 29.0
 
March 29, 2020, 2 a.m. N/A 0.0 ppb (0) 0.1 ppb (0) N/A N/A 0.0 ppb (0) 37.0 ppb (28) 0.11 ppb (1) N/A 0.4 μg/m3 (2) 28.0
 
March 29, 2020, 1 a.m. N/A 0.0 ppb (0) 0.1 ppb (0) N/A N/A 0.0 ppb (0) 36.0 ppb (28) 0.11 ppb (1) N/A 0.3 μg/m3 (1) 28.0
 
March 29, 2020, midnight N/A 0.0 ppb (0) 0.1 ppb (0) N/A N/A 0.0 ppb (0) 36.0 ppb (28) 0.11 ppb (1) N/A 0.3 μg/m3 (1) 28.0
 
March 28, 2020, 11 p.m. N/A 0.0 ppb (0) 0.1 ppb (0) N/A N/A 0.0 ppb (0) 35.0 ppb (27) 0.11 ppb (1) N/A 0.3 μg/m3 (1) 27.0
 
March 28, 2020, 10 p.m. N/A 0.0 ppb (0) 0.1 ppb (0) N/A N/A 0.0 ppb (0) 36.0 ppb (28) 0.11 ppb (1) N/A 0.3 μg/m3 (1) 28.0
 
March 28, 2020, 9 p.m. N/A 0.0 ppb (0) 0.1 ppb (0) N/A N/A 0.0 ppb (0) 37.0 ppb (28) 0.11 ppb (1) N/A 0.3 μg/m3 (1) 28.0
 
March 28, 2020, 8 p.m. N/A 0.0 ppb (0) 0.1 ppb (0) N/A N/A 0.0 ppb (0) 36.0 ppb (28) 0.1 ppb (1) N/A 0.2 μg/m3 (1) 28.0
 
March 28, 2020, 7 p.m. N/A 0.0 ppb (0) 0.2 ppb (0) N/A N/A 0.0 ppb (0) 36.0 ppb (28) 0.1 ppb (1) N/A 0.4 μg/m3 (2) 28.0
 
March 28, 2020, 6 p.m. N/A 0.0 ppb (0) 0.1 ppb (0) N/A N/A 0.0 ppb (0) 38.0 ppb (29) 0.11 ppb (1) N/A 0.3 μg/m3 (1) 29.0
 
March 28, 2020, 5 p.m. N/A 0.0 ppb (0) 0.1 ppb (0) N/A N/A 0.0 ppb (0) 40.0 ppb (31) 0.11 ppb (1) N/A 0.2 μg/m3 (1) 31.0
 
March 28, 2020, 4 p.m. N/A 0.0 ppb (0) 0.1 ppb (0) N/A N/A 0.0 ppb (0) 43.0 ppb (33) 0.12 ppb (1) N/A 0.3 μg/m3 (1) 33.0
 
March 28, 2020, 3 p.m. N/A 0.0 ppb (0) 0.0 ppb (0) N/A N/A 0.0 ppb (0) 43.0 ppb (33) 0.11 ppb (1) N/A 0.4 μg/m3 (2) 33.0
 
March 28, 2020, 2 p.m. N/A 0.0 ppb (0) 0.0 ppb (0) N/A N/A 0.0 ppb (0) 45.0 ppb (35) 0.12 ppb (1) N/A 0.4 μg/m3 (2) 35.0
 
March 28, 2020, 1 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 46.0 ppb (35) 0.12 ppb (1) N/A 0.4 μg/m3 (2) 35.0
 
March 28, 2020, noon N/A 0.0 ppb (0) 0.0 ppb (0) N/A N/A 0.0 ppb (0) 47.0 ppb (36) 0.12 ppb (1) N/A 0.3 μg/m3 (1) 36.0
 
March 28, 2020, 11 a.m. N/A 0.0 ppb (0) 0.0 ppb (0) N/A N/A N/A 47.0 ppb (36) 0.12 ppb (1) N/A 0.3 μg/m3 (1) 36.0
 
March 28, 2020, 10 a.m. N/A 0.0 ppb (0) 0.0 ppb (0) N/A N/A 0.0 ppb (0) 46.0 ppb (35) 0.12 ppb (1) N/A 0.3 μg/m3 (1) 35.0
 
March 28, 2020, 9 a.m. N/A 0.0 ppb (0) 0.1 ppb (0) N/A N/A 0.0 ppb (0) 47.0 ppb (36) 0.12 ppb (1) N/A 0.4 μg/m3 (2) 36.0
 
March 28, 2020, 8 a.m. N/A 0.0 ppb (0) 0.1 ppb (0) N/A N/A 0.0 ppb (0) 46.0 ppb (35) 0.12 ppb (1) N/A 0.4 μg/m3 (2) 35.0
 
March 28, 2020, 7 a.m. N/A 0.0 ppb (0) 0.1 ppb (0) N/A N/A 0.0 ppb (0) 37.0 ppb (28) 0.12 ppb (1) N/A 0.4 μg/m3 (2) 28.0
 
March 28, 2020, 6 a.m. N/A 0.0 ppb (0) 0.2 ppb (0) N/A N/A 0.0 ppb (0) 35.0 ppb (27) N/A N/A 0.3 μg/m3 (1) 27.0
 
March 28, 2020, 5 a.m. N/A 0.0 ppb (0) 0.2 ppb (0) N/A N/A 0.0 ppb (0) 37.0 ppb (28) 0.12 ppb (1) N/A 0.3 μg/m3 (1) 28.0
 
March 28, 2020, 4 a.m. N/A 0.0 ppb (0) 0.1 ppb (0) N/A N/A 0.0 ppb (0) 37.0 ppb (28) 0.12 ppb (1) N/A 0.4 μg/m3 (2) 28.0
 
March 28, 2020, 3 a.m. N/A 0.0 ppb (0) 0.0 ppb (0) N/A N/A 0.0 ppb (0) 35.0 ppb (27) 0.12 ppb (1) N/A 0.4 μg/m3 (2) 27.0
 
March 28, 2020, 2 a.m. N/A 0.0 ppb (0) 0.0 ppb (0) N/A N/A 0.0 ppb (0) N/A 0.12 ppb (1) N/A 0.4 μg/m3 (2) 2.0
 
March 28, 2020, 1 a.m. N/A 0.0 ppb (0) 0.1 ppb (0) N/A N/A 0.0 ppb (0) 37.0 ppb (28) 0.13 ppb (1) N/A 0.3 μg/m3 (1) 28.0
 
March 28, 2020, midnight N/A 0.0 ppb (0) 0.1 ppb (0) N/A N/A 0.0 ppb (0) 36.0 ppb (28) 0.13 ppb (1) N/A 0.3 μg/m3 (1) 28.0
 
March 27, 2020, 11 p.m. N/A 0.0 ppb (0) 0.1 ppb (0) N/A N/A 0.0 ppb (0) 37.0 ppb (28) 0.13 ppb (1) N/A 0.3 μg/m3 (1) 28.0
 
March 27, 2020, 10 p.m. N/A 0.0 ppb (0) 0.2 ppb (0) N/A N/A 0.0 ppb (0) 39.0 ppb (30) 0.13 ppb (1) N/A 0.3 μg/m3 (1) 30.0
 
March 27, 2020, 9 p.m. N/A 0.0 ppb (0) 0.2 ppb (0) N/A N/A 0.0 ppb (0) 39.0 ppb (30) 0.14 ppb (2) N/A 0.3 μg/m3 (1) 30.0
 
March 27, 2020, 8 p.m. N/A 0.0 ppb (0) 0.2 ppb (0) N/A N/A 0.0 ppb (0) 41.0 ppb (32) 0.14 ppb (2) N/A 0.4 μg/m3 (2) 32.0
 
March 27, 2020, 6 p.m. N/A 0.0 ppb (0) 0.2 ppb (0) N/A N/A 0.0 ppb (0) 45.0 ppb (35) 0.13 ppb (1) N/A 0.4 μg/m3 (2) 35.0
 
March 27, 2020, 5 p.m. N/A 0.0 ppb (0) 0.2 ppb (0) N/A N/A 0.0 ppb (0) 48.0 ppb (37) 0.13 ppb (1) N/A 0.6 μg/m3 (2) 37.0
 
March 27, 2020, 4 p.m. N/A 0.0 ppb (0) 0.1 ppb (0) N/A N/A 0.0 ppb (0) 49.0 ppb (38) 0.14 ppb (2) N/A 0.9 μg/m3 (4) 38.0
 
March 27, 2020, 3 p.m. N/A 0.0 ppb (0) 0.2 ppb (0) N/A N/A 0.0 ppb (0) 50.0 ppb (38) N/A N/A 1.8 μg/m3 (8) 38.0
 
March 27, 2020, 2 p.m. N/A 0.0 ppb (0) 0.1 ppb (0) N/A N/A 0.0 ppb (0) 50.0 ppb (38) N/A N/A 2.1 μg/m3 (9) 38.0
 
March 27, 2020, 1 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 52.0 ppb (40) N/A N/A 3.5 μg/m3 (15) 40.0
 
March 27, 2020, noon N/A 0.0 ppb (0) 0.2 ppb (0) N/A N/A 0.0 ppb (0) 50.0 ppb (38) N/A N/A 2.1 μg/m3 (9) 38.0
 
March 27, 2020, 11 a.m. N/A 0.0 ppb (0) 0.2 ppb (0) N/A N/A N/A 49.0 ppb (38) N/A N/A 1.8 μg/m3 (8) 38.0
 
March 27, 2020, 10 a.m. N/A 0.0 ppb (0) 0.2 ppb (0) N/A N/A 0.0 ppb (0) 48.0 ppb (37) N/A N/A 0.8 μg/m3 (3) 37.0
 
March 27, 2020, 9 a.m. N/A 0.0 ppb (0) 0.1 ppb (0) N/A N/A 0.0 ppb (0) 48.0 ppb (37) N/A N/A 0.9 μg/m3 (4) 37.0
 
March 27, 2020, 8 a.m. N/A 0.0 ppb (0) 0.2 ppb (0) N/A N/A 0.0 ppb (0) 49.0 ppb (38) N/A N/A 0.9 μg/m3 (4) 38.0
 
March 27, 2020, 7 a.m. N/A 0.0 ppb (0) 0.1 ppb (0) N/A N/A 0.0 ppb (0) 48.0 ppb (37) N/A N/A 0.5 μg/m3 (2) 37.0
 
March 27, 2020, 6 a.m. N/A 0.0 ppb (0) 0.1 ppb (0) N/A N/A 0.0 ppb (0) 44.0 ppb (34) N/A N/A 0.5 μg/m3 (2) 34.0
 
March 27, 2020, 5 a.m. N/A 0.0 ppb (0) 0.2 ppb (0) N/A N/A 0.0 ppb (0) 50.0 ppb (38) N/A N/A 0.6 μg/m3 (2) 38.0
 
March 27, 2020, 4 a.m. N/A 0.0 ppb (0) 0.2 ppb (0) N/A N/A 0.0 ppb (0) 50.0 ppb (38) N/A N/A 0.7 μg/m3 (3) 38.0
 
March 27, 2020, 3 a.m. N/A 0.0 ppb (0) 0.2 ppb (0) N/A N/A 0.0 ppb (0) 50.0 ppb (38) N/A N/A 0.7 μg/m3 (3) 38.0
 
March 27, 2020, 2 a.m. N/A N/A 0.2 ppb (0) N/A N/A 0.0 ppb (0) 51.0 ppb (39) N/A N/A 1.0 μg/m3 (4) 39.0
 
March 27, 2020, 1 a.m. N/A N/A 0.2 ppb (0) N/A N/A 0.0 ppb (0) 50.0 ppb (38) N/A N/A 0.9 μg/m3 (4) 38.0
 
March 27, 2020, midnight N/A 0.0 ppb (0) 0.2 ppb (0) N/A N/A 0.0 ppb (0) 49.0 ppb (38) N/A N/A 0.7 μg/m3 (3) 38.0
 
March 26, 2020, 11 p.m. N/A 0.0 ppb (0) 0.2 ppb (0) N/A N/A 0.0 ppb (0) 49.0 ppb (38) N/A N/A 1.0 μg/m3 (4) 38.0
 
March 26, 2020, 10 p.m. N/A 0.0 ppb (0) 0.3 ppb (0) N/A N/A 0.0 ppb (0) 50.0 ppb (38) N/A N/A 1.6 μg/m3 (7) 38.0
 
March 26, 2020, 9 p.m. N/A 0.0 ppb (0) 0.2 ppb (0) N/A N/A 0.0 ppb (0) 46.0 ppb (35) N/A N/A 1.1 μg/m3 (5) 35.0
 
March 26, 2020, 8 p.m. N/A 0.0 ppb (0) 0.2 ppb (0) N/A N/A 0.0 ppb (0) 43.0 ppb (33) N/A N/A 0.9 μg/m3 (4) 33.0
 
March 26, 2020, 7 p.m. N/A 0.0 ppb (0) 0.3 ppb (0) N/A N/A 0.0 ppb (0) 40.0 ppb (31) N/A N/A 1.2 μg/m3 (5) 31.0
 
March 26, 2020, 6 p.m. N/A 0.0 ppb (0) 0.4 ppb (0) N/A N/A 0.0 ppb (0) 38.0 ppb (29) N/A N/A 3.6 μg/m3 (15) 29.0
 
March 26, 2020, 5 p.m. N/A 0.0 ppb (0) 0.4 ppb (0) N/A N/A 0.0 ppb (0) 36.0 ppb (28) N/A N/A 3.7 μg/m3 (15) 28.0
 
March 26, 2020, 4 p.m. N/A 0.0 ppb (0) 0.3 ppb (0) N/A N/A 0.0 ppb (0) 33.0 ppb (25) N/A N/A 2.9 μg/m3 (12) 25.0
 
March 26, 2020, 3 p.m. N/A 0.0 ppb (0) 0.3 ppb (0) N/A N/A 0.0 ppb (0) 34.0 ppb (26) N/A N/A 2.6 μg/m3 (11) 26.0
 
March 26, 2020, 2 p.m. N/A 0.0 ppb (0) 0.3 ppb (0) N/A N/A 0.0 ppb (0) 33.0 ppb (25) 0.13 ppb (1) N/A 2.4 μg/m3 (10) 25.0
 
March 26, 2020, 1 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 33.0 ppb (25) 0.14 ppb (2) N/A 2.1 μg/m3 (9) 25.0
 
March 26, 2020, noon N/A 0.0 ppb (0) 0.3 ppb (0) N/A N/A 0.0 ppb (0) 36.0 ppb (28) 0.14 ppb (2) N/A 2.3 μg/m3 (10) 28.0
 
March 26, 2020, 11 a.m. N/A 0.0 ppb (0) 0.2 ppb (0) N/A N/A N/A 33.0 ppb (25) 0.14 ppb (2) N/A 1.7 μg/m3 (7) 25.0
 
March 26, 2020, 10 a.m. N/A 0.0 ppb (0) 0.2 ppb (0) N/A N/A 0.0 ppb (0) 32.0 ppb (25) 0.13 ppb (1) N/A 1.7 μg/m3 (7) 25.0
 
March 26, 2020, 9 a.m. N/A 0.0 ppb (0) 0.2 ppb (0) N/A N/A 0.0 ppb (0) 35.0 ppb (27) 0.14 ppb (2) N/A 2.0 μg/m3 (8) 27.0
 
March 26, 2020, 8 a.m. N/A 0.0 ppb (0) 0.2 ppb (0) N/A N/A 0.0 ppb (0) N/A 0.13 ppb (1) N/A 1.9 μg/m3 (8) 8.0
 
March 26, 2020, 7 a.m. N/A 0.0 ppb (0) 0.1 ppb (0) N/A N/A 0.0 ppb (0) 33.0 ppb (25) 0.13 ppb (1) N/A 1.8 μg/m3 (8) 25.0
 
March 26, 2020, 6 a.m. N/A N/A 0.1 ppb (0) N/A N/A 0.0 ppb (0) 30.0 ppb (23) N/A N/A 1.7 μg/m3 (7) 23.0
 
March 26, 2020, 5 a.m. N/A N/A 0.1 ppb (0) N/A N/A 0.0 ppb (0) 29.0 ppb (22) 0.13 ppb (1) N/A 1.3 μg/m3 (5) 22.0
 
March 26, 2020, 4 a.m. N/A 0.0 ppb (0) 0.2 ppb (0) N/A N/A 0.0 ppb (0) 29.0 ppb (22) 0.13 ppb (1) N/A 1.3 μg/m3 (5) 22.0
 
March 26, 2020, 3 a.m. N/A 0.0 ppb (0) 0.2 ppb (0) N/A N/A 0.0 ppb (0) 29.0 ppb (22) 0.12 ppb (1) N/A 1.3 μg/m3 (5) 22.0
 
March 26, 2020, 2 a.m. N/A 0.0 ppb (0) 0.4 ppb (0) N/A N/A 0.0 ppb (0) N/A 0.11 ppb (1) N/A 1.2 μg/m3 (5) 5.0
 
March 26, 2020, 1 a.m. N/A 0.0 ppb (0) 0.8 ppb (1) N/A N/A 0.0 ppb (0) 33.0 ppb (25) 0.11 ppb (1) N/A 1.2 μg/m3 (5) 25.0
 
March 26, 2020, midnight N/A 0.1 ppb (0) 1.1 ppb (1) N/A N/A 0.0 ppb (0) 31.0 ppb (24) 0.11 ppb (1) N/A 1.5 μg/m3 (6) 24.0
 
March 25, 2020, 11 p.m. N/A 0.0 ppb (0) 0.5 ppb (0) N/A N/A 0.0 ppb (0) 33.0 ppb (25) 0.11 ppb (1) N/A 1.5 μg/m3 (6) 25.0
 
March 25, 2020, 10 p.m. N/A 0.0 ppb (0) 0.5 ppb (0) N/A N/A 0.0 ppb (0) 32.0 ppb (25) 0.11 ppb (1) N/A 1.6 μg/m3 (7) 25.0
 
March 25, 2020, 9 p.m. N/A 0.0 ppb (0) 0.3 ppb (0) N/A N/A 0.0 ppb (0) 31.0 ppb (24) 0.11 ppb (1) N/A 1.7 μg/m3 (7) 24.0
 
March 25, 2020, 8 p.m. N/A 0.0 ppb (0) 0.2 ppb (0) N/A N/A 0.0 ppb (0) 28.0 ppb (22) 0.11 ppb (1) N/A 1.7 μg/m3 (7) 22.0
 
March 25, 2020, 7 p.m. N/A 0.0 ppb (0) 0.2 ppb (0) N/A N/A 0.0 ppb (0) 26.0 ppb (20) 0.11 ppb (1) N/A 1.8 μg/m3 (8) 20.0
 
March 25, 2020, 6 p.m. N/A 0.0 ppb (0) 0.3 ppb (0) N/A N/A 0.0 ppb (0) 27.0 ppb (21) 0.12 ppb (1) N/A 1.9 μg/m3 (8) 21.0
 
March 25, 2020, 5 p.m. N/A 0.0 ppb (0) 0.3 ppb (0) N/A N/A 0.0 ppb (0) 33.0 ppb (25) 0.12 ppb (1) N/A 1.3 μg/m3 (5) 25.0
 
March 25, 2020, 4 p.m. N/A 0.0 ppb (0) 0.2 ppb (0) N/A N/A 0.0 ppb (0) 34.0 ppb (26) 0.12 ppb (1) N/A 1.1 μg/m3 (5) 26.0
 
March 25, 2020, 3 p.m. N/A 0.0 ppb (0) 0.3 ppb (0) N/A N/A 0.0 ppb (0) 34.0 ppb (26) 0.12 ppb (1) N/A 1.1 μg/m3 (5) 26.0
 
March 25, 2020, 2 p.m. N/A 0.0 ppb (0) 0.2 ppb (0) N/A N/A 0.0 ppb (0) 34.0 ppb (26) 0.12 ppb (1) N/A 1.1 μg/m3 (5) 26.0
 
March 25, 2020, 1 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 33.0 ppb (25) 0.12 ppb (1) N/A 1.0 μg/m3 (4) 25.0
 
March 25, 2020, noon N/A 0.0 ppb (0) 0.1 ppb (0) N/A N/A 0.0 ppb (0) 32.0 ppb (25) 0.12 ppb (1) N/A 0.9 μg/m3 (4) 25.0
 
March 25, 2020, 11 a.m. N/A 0.0 ppb (0) 0.2 ppb (0) N/A N/A N/A 36.0 ppb (28) 0.12 ppb (1) N/A 1.1 μg/m3 (5) 28.0
 
March 25, 2020, 10 a.m. N/A 0.0 ppb (0) 0.2 ppb (0) N/A N/A 0.0 ppb (0) 34.0 ppb (26) 0.12 ppb (1) N/A 1.0 μg/m3 (4) 26.0
 
March 25, 2020, 9 a.m. N/A 0.0 ppb (0) 0.1 ppb (0) N/A N/A 0.0 ppb (0) 31.0 ppb (24) 0.12 ppb (1) N/A 0.5 μg/m3 (2) 24.0
 
March 25, 2020, 8 a.m. N/A 0.0 ppb (0) 0.6 ppb (1) N/A N/A 0.0 ppb (0) 31.0 ppb (24) 0.12 ppb (1) N/A 0.6 μg/m3 (2) 24.0
 
March 25, 2020, 7 a.m. N/A 0.0 ppb (0) 0.1 ppb (0) N/A N/A 0.0 ppb (0) 31.0 ppb (24) 0.12 ppb (1) N/A 0.6 μg/m3 (2) 24.0
 
March 25, 2020, 6 a.m. N/A 0.0 ppb (0) 0.1 ppb (0) N/A N/A 0.0 ppb (0) 32.0 ppb (25) N/A N/A 0.7 μg/m3 (3) 25.0
 
March 25, 2020, 5 a.m. N/A 0.0 ppb (0) 0.1 ppb (0) N/A N/A 0.0 ppb (0) 32.0 ppb (25) 0.11 ppb (1) N/A 0.9 μg/m3 (4) 25.0
 
March 25, 2020, 4 a.m. N/A 0.0 ppb (0) 0.1 ppb (0) N/A N/A 0.0 ppb (0) 31.0 ppb (24) 0.11 ppb (1) N/A 0.9 μg/m3 (4) 24.0
 
March 25, 2020, 3 a.m. N/A 0.0 ppb (0) 0.6 ppb (1) N/A N/A 0.0 ppb (0) 31.0 ppb (24) 0.12 ppb (1) N/A 1.0 μg/m3 (4) 24.0
 
March 25, 2020, 2 a.m. N/A 0.0 ppb (0) 0.1 ppb (0) N/A N/A 0.0 ppb (0) 33.0 ppb (25) 0.11 ppb (1) N/A 1.0 μg/m3 (4) 25.0
 
March 25, 2020, 1 a.m. N/A 0.0 ppb (0) 0.3 ppb (0) N/A N/A 0.0 ppb (0) 35.0 ppb (27) 0.12 ppb (1) N/A 0.9 μg/m3 (4) 27.0
 
March 25, 2020, midnight N/A 0.1 ppb (0) 0.9 ppb (1) N/A N/A 0.0 ppb (0) 35.0 ppb (27) 0.11 ppb (1) N/A 1.1 μg/m3 (5) 27.0
 
March 24, 2020, 11 p.m. N/A 0.0 ppb (0) 0.5 ppb (0) N/A N/A 0.0 ppb (0) 36.0 ppb (28) 0.11 ppb (1) N/A 1.1 μg/m3 (5) 28.0
 
March 24, 2020, 10 p.m. N/A 0.0 ppb (0) 0.2 ppb (0) N/A N/A 0.0 ppb (0) 37.0 ppb (28) 0.12 ppb (1) N/A 1.1 μg/m3 (5) 28.0
 
March 24, 2020, 9 p.m. N/A 0.0 ppb (0) 0.2 ppb (0) N/A N/A 0.0 ppb (0) 37.0 ppb (28) 0.12 ppb (1) N/A 1.1 μg/m3 (5) 28.0
 
March 24, 2020, 8 p.m. N/A 0.0 ppb (0) 0.3 ppb (0) N/A N/A 0.0 ppb (0) 36.0 ppb (28) 0.12 ppb (1) N/A 1.3 μg/m3 (5) 28.0
 
March 24, 2020, 7 p.m. N/A 0.0 ppb (0) 0.3 ppb (0) N/A N/A 0.0 ppb (0) 32.0 ppb (25) 0.11 ppb (1) N/A 1.2 μg/m3 (5) 25.0