ID: 1564

AQSQID: 530090013

Site Name: Cheeka Peak

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

Updated: April 13, 2021, 3:43 a.m.

Location: Neah Bay (98357), WA

Reporting: True, Located: True

Current AQI: 43.0

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
April 13, 2021, 2 a.m. N/A 0.1 ppb (1) 1.7 ppb (2) N/A N/A 0.0 ppb (0) 46.0 ppb (43) 0.12 ppb (2) N/A 1.5 μg/m3 (7) 43.0
 
April 13, 2021, 1 a.m. N/A 0.1 ppb (1) 1.4 ppb (2) N/A N/A 0.0 ppb (0) 45.0 ppb (42) 0.12 ppb (2) N/A 1.5 μg/m3 (7) 42.0
 
April 13, 2021, midnight N/A 0.2 ppb (1) 1.8 ppb (2) N/A N/A 0.0 ppb (0) 44.0 ppb (41) 0.12 ppb (2) N/A 1.6 μg/m3 (7) 41.0
 
April 12, 2021, 11 p.m. N/A 0.2 ppb (1) 1.3 ppb (2) N/A N/A 0.0 ppb (0) 44.0 ppb (41) 0.12 ppb (2) N/A 1.6 μg/m3 (7) 41.0
 
April 12, 2021, 10 p.m. N/A 0.1 ppb (1) 0.9 ppb (1) N/A N/A 0.0 ppb (0) 44.0 ppb (41) 0.12 ppb (2) N/A 1.6 μg/m3 (7) 41.0
 
April 12, 2021, 9 p.m. N/A 0.0 ppb (0) 0.7 ppb (1) N/A N/A N/A 42.0 ppb (39) 0.12 ppb (2) N/A 1.6 μg/m3 (7) 39.0
 
April 12, 2021, 8 p.m. N/A 0.1 ppb (1) 0.8 ppb (1) N/A N/A N/A 41.0 ppb (38) 0.14 ppb (2) N/A 1.5 μg/m3 (7) 38.0
 
April 12, 2021, 7 p.m. N/A 0.2 ppb (1) 0.8 ppb (1) N/A N/A 0.0 ppb (0) 38.0 ppb (36) 0.14 ppb (2) N/A 1.4 μg/m3 (6) 36.0
 
April 12, 2021, 6 p.m. N/A 0.1 ppb (1) 0.6 ppb (1) N/A N/A 0.0 ppb (0) 37.0 ppb (35) N/A N/A 1.3 μg/m3 (6) 35.0
 
April 12, 2021, 5 p.m. N/A 0.1 ppb (1) 0.7 ppb (1) N/A N/A 0.0 ppb (0) 35.0 ppb (33) N/A N/A 1.4 μg/m3 (6) 33.0
 
April 12, 2021, 4 p.m. N/A 0.2 ppb (1) 1.0 ppb (1) N/A N/A 0.0 ppb (0) 33.0 ppb (31) 0.14 ppb (2) N/A 1.7 μg/m3 (8) 31.0
 
April 12, 2021, 3 p.m. N/A 0.1 ppb (1) 1.2 ppb (2) N/A N/A 0.0 ppb (0) 32.0 ppb (30) 0.14 ppb (2) N/A 1.8 μg/m3 (8) 30.0
 
April 12, 2021, 2 p.m. N/A 0.1 ppb (1) 1.3 ppb (2) N/A N/A 0.0 ppb (0) 32.0 ppb (30) 0.14 ppb (2) N/A 1.9 μg/m3 (8) 30.0
 
April 12, 2021, 1 p.m. N/A 0.0 ppb (0) 1.5 ppb (2) N/A N/A 0.0 ppb (0) 33.0 ppb (31) 0.14 ppb (2) N/A 1.9 μg/m3 (8) 31.0
 
April 12, 2021, noon N/A 0.0 ppb (0) 1.9 ppb (2) N/A N/A 0.0 ppb (0) 31.0 ppb (29) 0.14 ppb (2) N/A 1.9 μg/m3 (8) 29.0
 
April 12, 2021, 11 a.m. N/A 0.0 ppb (0) 3.0 ppb (3) N/A N/A 0.0 ppb (0) 30.0 ppb (28) 0.14 ppb (2) N/A N/A 28.0
 
April 12, 2021, 10 a.m. N/A 0.1 ppb (1) 3.3 ppb (4) N/A N/A 0.0 ppb (0) 35.0 ppb (33) 0.14 ppb (2) N/A 2.3 μg/m3 (10) 33.0
 
April 12, 2021, 9 a.m. N/A 0.1 ppb (1) 2.3 ppb (3) N/A N/A 0.0 ppb (0) 37.0 ppb (35) 0.13 ppb (2) N/A 2.1 μg/m3 (9) 35.0
 
April 12, 2021, 8 a.m. N/A 0.1 ppb (1) 1.9 ppb (2) N/A N/A 0.0 ppb (0) 39.0 ppb (37) 0.12 ppb (2) N/A 1.9 μg/m3 (8) 37.0
 
April 12, 2021, 7 a.m. N/A 0.1 ppb (1) 2.3 ppb (3) N/A N/A 0.0 ppb (0) 38.0 ppb (36) 0.11 ppb (2) N/A 2.0 μg/m3 (9) 36.0
 
April 12, 2021, 6 a.m. N/A 0.1 ppb (1) 2.6 ppb (3) N/A N/A 0.0 ppb (0) 40.0 ppb (38) N/A N/A 2.0 μg/m3 (9) 38.0
 
April 12, 2021, 5 a.m. N/A 0.1 ppb (1) 2.5 ppb (3) N/A N/A 0.0 ppb (0) 41.0 ppb (38) N/A N/A 2.0 μg/m3 (9) 38.0
 
April 12, 2021, 4 a.m. N/A 0.0 ppb (0) 1.8 ppb (2) N/A N/A 0.0 ppb (0) 40.0 ppb (38) 0.12 ppb (2) N/A 2.1 μg/m3 (9) 38.0
 
April 12, 2021, 3 a.m. N/A 0.0 ppb (0) 3.9 ppb (4) N/A N/A N/A 36.0 ppb (34) 0.11 ppb (2) N/A 2.0 μg/m3 (9) 34.0
 
April 12, 2021, 2 a.m. N/A 0.1 ppb (1) 0.8 ppb (1) N/A N/A 0.0 ppb (0) N/A 0.11 ppb (2) N/A 1.7 μg/m3 (8) 8.0
 
April 12, 2021, 1 a.m. N/A 0.1 ppb (1) 0.6 ppb (1) N/A N/A 0.0 ppb (0) 40.0 ppb (38) 0.11 ppb (2) N/A 1.8 μg/m3 (8) 38.0
 
April 12, 2021, midnight N/A 0.1 ppb (1) 0.4 ppb (1) N/A N/A 0.0 ppb (0) 39.0 ppb (37) 0.11 ppb (2) N/A 1.4 μg/m3 (6) 37.0
 
April 11, 2021, 11 p.m. N/A 0.0 ppb (0) 0.3 ppb (1) N/A N/A 0.0 ppb (0) 39.0 ppb (37) 0.11 ppb (2) N/A 1.3 μg/m3 (6) 37.0
 
April 11, 2021, 10 p.m. N/A 0.0 ppb (0) 0.3 ppb (1) N/A N/A 0.0 ppb (0) 40.0 ppb (38) 0.12 ppb (2) N/A 1.2 μg/m3 (5) 38.0
 
April 11, 2021, 9 p.m. N/A 0.1 ppb (1) 0.4 ppb (1) N/A N/A 0.0 ppb (0) 40.0 ppb (38) 0.13 ppb (2) N/A 1.3 μg/m3 (6) 38.0
 
April 11, 2021, 8 p.m. N/A 0.1 ppb (1) 0.5 ppb (1) N/A N/A 0.0 ppb (0) 35.0 ppb (33) 0.13 ppb (2) N/A 2.1 μg/m3 (9) 33.0
 
April 11, 2021, 7 p.m. N/A 0.2 ppb (1) 0.8 ppb (1) N/A N/A 0.0 ppb (0) 35.0 ppb (33) 0.12 ppb (2) N/A 1.8 μg/m3 (8) 33.0
 
April 11, 2021, 6 p.m. N/A 0.2 ppb (1) 0.5 ppb (1) N/A N/A 0.0 ppb (0) 31.0 ppb (29) 0.13 ppb (2) N/A 2.1 μg/m3 (9) 29.0
 
April 11, 2021, 5 p.m. N/A 0.1 ppb (1) 0.2 ppb (1) N/A N/A 0.0 ppb (0) 34.0 ppb (32) 0.12 ppb (2) N/A 2.0 μg/m3 (9) 32.0
 
April 11, 2021, 4 p.m. N/A 0.1 ppb (1) 0.2 ppb (1) N/A N/A 0.0 ppb (0) 36.0 ppb (34) 0.11 ppb (2) N/A 2.0 μg/m3 (9) 34.0
 
April 11, 2021, 3 p.m. N/A 0.0 ppb (0) 0.2 ppb (1) N/A N/A 0.0 ppb (0) 37.0 ppb (35) 0.12 ppb (2) N/A 2.1 μg/m3 (9) 35.0
 
April 11, 2021, 2 p.m. N/A 0.0 ppb (0) 0.1 ppb (1) N/A N/A 0.0 ppb (0) 37.0 ppb (35) 0.11 ppb (2) N/A 2.1 μg/m3 (9) 35.0
 
April 11, 2021, 1 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 38.0 ppb (36) 0.11 ppb (2) N/A 2.1 μg/m3 (9) 36.0
 
April 11, 2021, noon N/A 0.1 ppb (1) 0.2 ppb (1) N/A N/A 0.0 ppb (0) 38.0 ppb (36) 0.11 ppb (2) N/A 2.2 μg/m3 (10) 36.0
 
April 11, 2021, 11 a.m. N/A 0.0 ppb (0) 0.2 ppb (1) N/A N/A 0.0 ppb (0) 38.0 ppb (36) 0.12 ppb (2) N/A 2.2 μg/m3 (10) 36.0
 
April 11, 2021, 10 a.m. N/A 0.0 ppb (0) 0.3 ppb (1) N/A N/A N/A 39.0 ppb (37) 0.11 ppb (2) N/A 2.5 μg/m3 (11) 37.0
 
April 11, 2021, 9 a.m. N/A 0.0 ppb (0) 0.2 ppb (1) N/A N/A 0.0 ppb (0) 40.0 ppb (38) 0.12 ppb (2) N/A 2.6 μg/m3 (11) 38.0
 
April 11, 2021, 8 a.m. N/A 0.0 ppb (0) 0.1 ppb (1) N/A N/A 0.0 ppb (0) 41.0 ppb (38) 0.12 ppb (2) N/A 2.4 μg/m3 (10) 38.0
 
April 11, 2021, 7 a.m. N/A 0.0 ppb (0) 0.2 ppb (1) N/A N/A 0.0 ppb (0) 40.0 ppb (38) 0.11 ppb (2) N/A 2.0 μg/m3 (9) 38.0
 
April 11, 2021, 6 a.m. N/A 0.0 ppb (0) 0.3 ppb (1) N/A N/A 0.0 ppb (0) 37.0 ppb (35) N/A N/A 3.0 μg/m3 (13) 35.0
 
April 11, 2021, 5 a.m. N/A 0.0 ppb (0) 0.5 ppb (1) N/A N/A 0.0 ppb (0) 39.0 ppb (37) N/A N/A 2.9 μg/m3 (13) 37.0
 
April 11, 2021, 4 a.m. N/A 0.0 ppb (0) 0.2 ppb (1) N/A N/A 0.0 ppb (0) 38.0 ppb (36) 0.12 ppb (2) N/A 2.9 μg/m3 (13) 36.0
 
April 11, 2021, 3 a.m. N/A 0.0 ppb (0) 0.4 ppb (1) N/A N/A 0.0 ppb (0) 39.0 ppb (37) 0.11 ppb (2) N/A 2.9 μg/m3 (13) 37.0
 
April 11, 2021, 2 a.m. N/A 0.0 ppb (0) 0.3 ppb (1) N/A N/A 0.0 ppb (0) 38.0 ppb (36) 0.12 ppb (2) N/A 2.4 μg/m3 (10) 36.0
 
April 11, 2021, 1 a.m. N/A 0.1 ppb (1) 0.3 ppb (1) N/A N/A 0.0 ppb (0) 39.0 ppb (37) 0.12 ppb (2) N/A 2.5 μg/m3 (11) 37.0
 
April 11, 2021, midnight N/A 0.1 ppb (1) 0.3 ppb (1) N/A N/A 0.0 ppb (0) 39.0 ppb (37) 0.12 ppb (2) N/A 2.8 μg/m3 (12) 37.0
 
April 10, 2021, 11 p.m. N/A 0.1 ppb (1) 0.4 ppb (1) N/A N/A 0.0 ppb (0) 41.0 ppb (38) 0.12 ppb (2) N/A 3.1 μg/m3 (13) 38.0
 
April 10, 2021, 10 p.m. N/A 0.1 ppb (1) 0.6 ppb (1) N/A N/A 0.0 ppb (0) 43.0 ppb (40) 0.12 ppb (2) N/A 3.0 μg/m3 (13) 40.0
 
April 10, 2021, 9 p.m. N/A 0.1 ppb (1) 0.4 ppb (1) N/A N/A 0.0 ppb (0) 42.0 ppb (39) 0.12 ppb (2) N/A 2.6 μg/m3 (11) 39.0
 
April 10, 2021, 8 p.m. N/A 0.1 ppb (1) 0.5 ppb (1) N/A N/A 0.0 ppb (0) 41.0 ppb (38) 0.13 ppb (2) N/A 2.3 μg/m3 (10) 38.0
 
April 10, 2021, 7 p.m. N/A 0.0 ppb (0) 0.2 ppb (1) N/A N/A 0.0 ppb (0) 40.0 ppb (38) 0.12 ppb (2) N/A 2.3 μg/m3 (10) 38.0
 
April 10, 2021, 6 p.m. N/A 0.1 ppb (1) 0.2 ppb (1) N/A N/A 0.0 ppb (0) 41.0 ppb (38) 0.13 ppb (2) N/A 2.2 μg/m3 (10) 38.0
 
April 10, 2021, 5 p.m. N/A 0.0 ppb (0) 0.2 ppb (1) N/A N/A 0.0 ppb (0) 40.0 ppb (38) 0.13 ppb (2) N/A 2.3 μg/m3 (10) 38.0
 
April 10, 2021, 4 p.m. N/A 0.1 ppb (1) 0.3 ppb (1) N/A N/A 0.0 ppb (0) 40.0 ppb (38) 0.13 ppb (2) N/A 2.3 μg/m3 (10) 38.0
 
April 10, 2021, 3 p.m. N/A 0.1 ppb (1) 0.3 ppb (1) N/A N/A 0.0 ppb (0) 40.0 ppb (38) 0.13 ppb (2) N/A 1.8 μg/m3 (8) 38.0
 
April 10, 2021, 2 p.m. N/A 0.1 ppb (1) 0.4 ppb (1) N/A N/A 0.0 ppb (0) 41.0 ppb (38) 0.13 ppb (2) N/A 1.9 μg/m3 (8) 38.0
 
April 10, 2021, 1 p.m. N/A 0.0 ppb (0) 0.4 ppb (1) N/A N/A 0.0 ppb (0) 42.0 ppb (39) 0.13 ppb (2) N/A 1.7 μg/m3 (8) 39.0
 
April 10, 2021, noon N/A 0.1 ppb (1) 0.4 ppb (1) N/A N/A 0.0 ppb (0) 42.0 ppb (39) 0.13 ppb (2) N/A 0.7 μg/m3 (3) 39.0
 
April 10, 2021, 11 a.m. N/A 0.1 ppb (1) 0.5 ppb (1) N/A N/A 0.0 ppb (0) 43.0 ppb (40) 0.13 ppb (2) N/A 0.4 μg/m3 (2) 40.0
 
April 10, 2021, 10 a.m. N/A 0.0 ppb (0) 0.5 ppb (1) N/A N/A 0.0 ppb (0) 42.0 ppb (39) 0.13 ppb (2) N/A 1.2 μg/m3 (5) 39.0
 
April 10, 2021, 9 a.m. N/A 0.0 ppb (0) 0.3 ppb (1) N/A N/A 0.0 ppb (0) 43.0 ppb (40) 0.12 ppb (2) N/A 0.9 μg/m3 (4) 40.0
 
April 10, 2021, 8 a.m. N/A 0.1 ppb (1) 0.5 ppb (1) N/A N/A 0.0 ppb (0) N/A 0.13 ppb (2) N/A 0.5 μg/m3 (3) 3.0
 
April 10, 2021, 7 a.m. N/A 0.0 ppb (0) 0.4 ppb (1) N/A N/A 0.0 ppb (0) 46.0 ppb (43) 0.13 ppb (2) N/A 0.4 μg/m3 (2) 43.0
 
April 10, 2021, 6 a.m. N/A 0.0 ppb (0) 0.3 ppb (1) N/A N/A 0.0 ppb (0) 45.0 ppb (42) N/A N/A 0.8 μg/m3 (4) 42.0
 
April 10, 2021, 5 a.m. N/A 0.0 ppb (0) 0.2 ppb (1) N/A N/A 0.0 ppb (0) 44.0 ppb (41) N/A N/A 0.6 μg/m3 (3) 41.0
 
April 10, 2021, 4 a.m. N/A 0.1 ppb (1) 0.2 ppb (1) N/A N/A 0.0 ppb (0) 42.0 ppb (39) 0.12 ppb (2) N/A 0.9 μg/m3 (4) 39.0
 
April 10, 2021, 3 a.m. N/A 0.0 ppb (0) 0.3 ppb (1) N/A N/A 0.0 ppb (0) 43.0 ppb (40) 0.12 ppb (2) N/A 0.3 μg/m3 (2) 40.0
 
April 10, 2021, 2 a.m. N/A 0.0 ppb (0) 0.3 ppb (1) N/A N/A 0.0 ppb (0) N/A 0.12 ppb (2) N/A 0.1 μg/m3 (1) 2.0
 
April 10, 2021, 1 a.m. N/A 0.1 ppb (1) 0.2 ppb (1) N/A N/A 0.0 ppb (0) 44.0 ppb (41) 0.12 ppb (2) N/A 0.2 μg/m3 (1) 41.0
 
April 10, 2021, midnight N/A 0.1 ppb (1) 0.3 ppb (1) N/A N/A 0.0 ppb (0) 46.0 ppb (43) 0.12 ppb (2) N/A 0.2 μg/m3 (1) 43.0
 
April 9, 2021, 11 p.m. N/A 0.1 ppb (1) 0.3 ppb (1) N/A N/A 0.0 ppb (0) 47.0 ppb (44) 0.12 ppb (2) N/A 0.3 μg/m3 (2) 44.0
 
April 9, 2021, 10 p.m. N/A 0.1 ppb (1) 0.3 ppb (1) N/A N/A 0.0 ppb (0) 48.0 ppb (45) 0.11 ppb (2) N/A 0.2 μg/m3 (1) 45.0
 
April 9, 2021, 9 p.m. N/A 0.1 ppb (1) 0.3 ppb (1) N/A N/A 0.0 ppb (0) 48.0 ppb (45) 0.12 ppb (2) N/A 0.2 μg/m3 (1) 45.0
 
April 9, 2021, 8 p.m. N/A 0.0 ppb (0) 0.3 ppb (1) N/A N/A 0.0 ppb (0) 47.0 ppb (44) 0.13 ppb (2) N/A 0.2 μg/m3 (1) 44.0
 
April 9, 2021, 7 p.m. N/A 0.1 ppb (1) 0.3 ppb (1) N/A N/A 0.0 ppb (0) 44.0 ppb (41) 0.14 ppb (2) N/A 0.4 μg/m3 (2) 41.0
 
April 9, 2021, 6 p.m. N/A 0.0 ppb (0) 0.2 ppb (1) N/A N/A 0.0 ppb (0) 41.0 ppb (38) 0.11 ppb (2) N/A 0.6 μg/m3 (3) 38.0
 
April 9, 2021, 5 p.m. N/A 0.0 ppb (0) 0.2 ppb (1) N/A N/A 0.0 ppb (0) 41.0 ppb (38) 0.11 ppb (2) N/A 1.1 μg/m3 (5) 38.0
 
April 9, 2021, 4 p.m. N/A 0.0 ppb (0) 0.3 ppb (1) N/A N/A 0.0 ppb (0) 41.0 ppb (38) 0.11 ppb (2) N/A 0.8 μg/m3 (4) 38.0
 
April 9, 2021, 3 p.m. N/A 0.1 ppb (1) 0.3 ppb (1) N/A N/A 0.0 ppb (0) 38.0 ppb (36) 0.12 ppb (2) N/A 0.3 μg/m3 (2) 36.0
 
April 9, 2021, 2 p.m. N/A 0.0 ppb (0) 0.2 ppb (1) N/A N/A 0.0 ppb (0) 42.0 ppb (39) 0.12 ppb (2) N/A 1.1 μg/m3 (5) 39.0
 
April 9, 2021, 1 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 41.0 ppb (38) 0.11 ppb (2) N/A 1.2 μg/m3 (5) 38.0
 
April 9, 2021, noon N/A 0.1 ppb (1) 0.4 ppb (1) N/A N/A 0.0 ppb (0) 38.0 ppb (36) 0.12 ppb (2) N/A 1.2 μg/m3 (5) 36.0
 
April 9, 2021, 11 a.m. N/A 0.0 ppb (0) 0.3 ppb (1) N/A N/A 0.0 ppb (0) 43.0 ppb (40) 0.12 ppb (2) N/A 2.1 μg/m3 (9) 40.0
 
April 9, 2021, 10 a.m. N/A 0.0 ppb (0) 0.3 ppb (1) N/A N/A N/A 45.0 ppb (42) 0.12 ppb (2) N/A 2.0 μg/m3 (9) 42.0
 
April 9, 2021, 9 a.m. N/A 0.0 ppb (0) 0.3 ppb (1) N/A N/A 0.0 ppb (0) 42.0 ppb (39) 0.12 ppb (2) N/A 2.0 μg/m3 (9) 39.0
 
April 9, 2021, 8 a.m. N/A 0.0 ppb (0) 0.2 ppb (1) N/A N/A 0.0 ppb (0) 43.0 ppb (40) 0.12 ppb (2) N/A 2.0 μg/m3 (9) 40.0
 
April 9, 2021, 7 a.m. N/A 0.0 ppb (0) 0.2 ppb (1) N/A N/A 0.0 ppb (0) 43.0 ppb (40) 0.11 ppb (2) N/A 2.2 μg/m3 (10) 40.0
 
April 9, 2021, 6 a.m. N/A 0.0 ppb (0) 0.2 ppb (1) N/A N/A 0.0 ppb (0) 42.0 ppb (39) N/A N/A 2.3 μg/m3 (10) 39.0
 
April 9, 2021, 5 a.m. N/A 0.0 ppb (0) 0.2 ppb (1) N/A N/A 0.0 ppb (0) 41.0 ppb (38) N/A N/A 2.2 μg/m3 (10) 38.0
 
April 9, 2021, 4 a.m. N/A 0.0 ppb (0) 0.2 ppb (1) N/A N/A 0.0 ppb (0) 42.0 ppb (39) 0.12 ppb (2) N/A 2.2 μg/m3 (10) 39.0
 
April 9, 2021, 3 a.m. N/A 0.0 ppb (0) 0.2 ppb (1) N/A N/A 0.0 ppb (0) 41.0 ppb (38) 0.11 ppb (2) N/A 1.9 μg/m3 (8) 38.0
 
April 9, 2021, 2 a.m. N/A 0.0 ppb (0) 0.3 ppb (1) N/A N/A 0.0 ppb (0) 42.0 ppb (39) 0.13 ppb (2) N/A 1.9 μg/m3 (8) 39.0
 
April 9, 2021, 1 a.m. N/A 0.1 ppb (1) 0.3 ppb (1) N/A N/A 0.0 ppb (0) 42.0 ppb (39) 0.13 ppb (2) N/A 1.7 μg/m3 (8) 39.0
 
April 9, 2021, midnight N/A 0.1 ppb (1) 0.6 ppb (1) N/A N/A 0.0 ppb (0) 44.0 ppb (41) 0.12 ppb (2) N/A 1.7 μg/m3 (8) 41.0
 
April 8, 2021, 11 p.m. N/A 0.1 ppb (1) 0.6 ppb (1) N/A N/A 0.0 ppb (0) 44.0 ppb (41) 0.13 ppb (2) N/A 1.7 μg/m3 (8) 41.0
 
April 8, 2021, 10 p.m. N/A 0.1 ppb (1) 0.8 ppb (1) N/A N/A 0.0 ppb (0) 44.0 ppb (41) 0.13 ppb (2) N/A 1.6 μg/m3 (7) 41.0
 
April 8, 2021, 9 p.m. N/A 0.1 ppb (1) 0.5 ppb (1) N/A N/A 0.0 ppb (0) 41.0 ppb (38) 0.13 ppb (2) N/A 1.7 μg/m3 (8) 38.0
 
April 8, 2021, 8 p.m. N/A 0.1 ppb (1) 0.3 ppb (1) N/A N/A 0.0 ppb (0) 41.0 ppb (38) 0.14 ppb (2) N/A 1.7 μg/m3 (8) 38.0
 
April 8, 2021, 7 p.m. N/A 0.3 ppb (1) 1.4 ppb (2) N/A N/A 0.0 ppb (0) 40.0 ppb (38) 0.14 ppb (2) N/A 1.7 μg/m3 (8) 38.0
 
April 8, 2021, 6 p.m. N/A 0.0 ppb (0) 0.2 ppb (1) N/A N/A 0.0 ppb (0) 40.0 ppb (38) 0.12 ppb (2) N/A 1.5 μg/m3 (7) 38.0
 
April 8, 2021, 5 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 39.0 ppb (37) 0.13 ppb (2) N/A 1.5 μg/m3 (7) 37.0
 
April 8, 2021, 4 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 39.0 ppb (37) 0.12 ppb (2) N/A 1.7 μg/m3 (8) 37.0
 
April 8, 2021, 3 p.m. N/A 0.0 ppb (0) 0.3 ppb (1) N/A N/A 0.0 ppb (0) 40.0 ppb (38) 0.12 ppb (2) N/A 1.7 μg/m3 (8) 38.0
 
April 8, 2021, 2 p.m. N/A 0.0 ppb (0) 0.2 ppb (1) N/A N/A 0.0 ppb (0) 41.0 ppb (38) 0.12 ppb (2) N/A 1.8 μg/m3 (8) 38.0
 
April 8, 2021, 1 p.m. N/A 0.1 ppb (1) 0.2 ppb (1) N/A N/A 0.0 ppb (0) 40.0 ppb (38) 0.12 ppb (2) N/A 1.8 μg/m3 (8) 38.0
 
April 8, 2021, noon N/A 0.1 ppb (1) 0.3 ppb (1) N/A N/A 0.0 ppb (0) 40.0 ppb (38) 0.12 ppb (2) N/A 1.8 μg/m3 (8) 38.0
 
April 8, 2021, 11 a.m. N/A 0.0 ppb (0) 0.5 ppb (1) N/A N/A 0.0 ppb (0) 41.0 ppb (38) 0.11 ppb (2) N/A 2.0 μg/m3 (9) 38.0
 
April 8, 2021, 10 a.m. N/A 0.1 ppb (1) 0.4 ppb (1) N/A N/A 0.0 ppb (0) 43.0 ppb (40) 0.11 ppb (2) N/A 2.3 μg/m3 (10) 40.0
 
April 8, 2021, 9 a.m. N/A 0.0 ppb (0) 0.3 ppb (1) N/A N/A 0.0 ppb (0) 43.0 ppb (40) 0.11 ppb (2) N/A 2.2 μg/m3 (10) 40.0
 
April 8, 2021, 8 a.m. N/A 0.0 ppb (0) 0.3 ppb (1) N/A N/A 0.0 ppb (0) 43.0 ppb (40) 0.12 ppb (2) N/A 1.6 μg/m3 (7) 40.0
 
April 8, 2021, 7 a.m. N/A 0.0 ppb (0) 0.3 ppb (1) N/A N/A 0.0 ppb (0) 44.0 ppb (41) 0.11 ppb (2) N/A 1.0 μg/m3 (5) 41.0
 
April 8, 2021, 6 a.m. N/A 0.1 ppb (1) 0.5 ppb (1) N/A N/A 0.0 ppb (0) 46.0 ppb (43) N/A N/A 0.4 μg/m3 (2) 43.0
 
April 8, 2021, 5 a.m. N/A 0.1 ppb (1) 1.5 ppb (2) N/A N/A 0.0 ppb (0) 44.0 ppb (41) N/A N/A 0.2 μg/m3 (1) 41.0
 
April 8, 2021, 4 a.m. N/A 0.0 ppb (0) 0.4 ppb (1) N/A N/A 0.0 ppb (0) 45.0 ppb (42) 0.12 ppb (2) N/A 0.2 μg/m3 (1) 42.0
 
April 8, 2021, 3 a.m. N/A 0.1 ppb (1) 0.5 ppb (1) N/A N/A 0.0 ppb (0) 42.0 ppb (39) 0.12 ppb (2) N/A 0.2 μg/m3 (1) 39.0
 
April 8, 2021, 2 a.m. N/A 0.1 ppb (1) 0.5 ppb (1) N/A N/A 0.0 ppb (0) N/A 0.13 ppb (2) N/A 0.1 μg/m3 (1) 2.0
 
April 8, 2021, 1 a.m. N/A 0.1 ppb (1) 0.5 ppb (1) N/A N/A 0.0 ppb (0) 43.0 ppb (40) 0.13 ppb (2) N/A 0.1 μg/m3 (1) 40.0
 
April 8, 2021, midnight N/A 0.1 ppb (1) 0.5 ppb (1) N/A N/A 0.0 ppb (0) 43.0 ppb (40) 0.14 ppb (2) N/A 0.3 μg/m3 (2) 40.0
 
April 7, 2021, 11 p.m. N/A 0.1 ppb (1) 0.4 ppb (1) N/A N/A 0.0 ppb (0) 43.0 ppb (40) 0.14 ppb (2) N/A 0.2 μg/m3 (1) 40.0
 
April 7, 2021, 10 p.m. N/A 0.1 ppb (1) 0.4 ppb (1) N/A N/A 0.0 ppb (0) 43.0 ppb (40) 0.13 ppb (2) N/A 0.1 μg/m3 (1) 40.0
 
April 7, 2021, 9 p.m. N/A 0.1 ppb (1) 0.4 ppb (1) N/A N/A 0.0 ppb (0) 44.0 ppb (41) 0.13 ppb (2) N/A 0.2 μg/m3 (1) 41.0
 
April 7, 2021, 8 p.m. N/A 0.1 ppb (1) 0.3 ppb (1) N/A N/A 0.0 ppb (0) 43.0 ppb (40) 0.14 ppb (2) N/A 0.2 μg/m3 (1) 40.0
 
April 7, 2021, 7 p.m. N/A 0.1 ppb (1) 0.5 ppb (1) N/A N/A 0.0 ppb (0) 43.0 ppb (40) 0.14 ppb (2) N/A 0.2 μg/m3 (1) 40.0
 
April 7, 2021, 6 p.m. N/A 0.1 ppb (1) 0.5 ppb (1) N/A N/A 0.0 ppb (0) 43.0 ppb (40) 0.14 ppb (2) N/A 0.1 μg/m3 (1) 40.0
 
April 7, 2021, 5 p.m. N/A 0.1 ppb (1) 0.5 ppb (1) N/A N/A 0.0 ppb (0) 44.0 ppb (41) 0.14 ppb (2) N/A 0.2 μg/m3 (1) 41.0
 
April 7, 2021, 4 p.m. N/A 0.1 ppb (1) 0.4 ppb (1) N/A N/A 0.0 ppb (0) 45.0 ppb (42) 0.13 ppb (2) N/A 0.2 μg/m3 (1) 42.0
 
April 7, 2021, 3 p.m. N/A 0.1 ppb (1) 0.4 ppb (1) N/A N/A 0.0 ppb (0) 44.0 ppb (41) 0.12 ppb (2) N/A 0.2 μg/m3 (1) 41.0
 
April 7, 2021, 2 p.m. N/A 0.1 ppb (1) 0.4 ppb (1) N/A N/A 0.0 ppb (0) 45.0 ppb (42) 0.12 ppb (2) N/A 0.2 μg/m3 (1) 42.0
 
April 7, 2021, 1 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 44.0 ppb (41) 0.12 ppb (2) N/A 0.1 μg/m3 (1) 41.0
 
April 7, 2021, noon N/A 0.1 ppb (1) 0.5 ppb (1) N/A N/A 0.0 ppb (0) 45.0 ppb (42) 0.12 ppb (2) N/A 0.2 μg/m3 (1) 42.0
 
April 7, 2021, 11 a.m. N/A 0.1 ppb (1) 0.5 ppb (1) N/A N/A 0.0 ppb (0) 44.0 ppb (41) 0.12 ppb (2) N/A 0.2 μg/m3 (1) 41.0
 
April 7, 2021, 10 a.m. N/A 0.1 ppb (1) 0.3 ppb (1) N/A N/A N/A 42.0 ppb (39) 0.11 ppb (2) N/A 0.3 μg/m3 (2) 39.0
 
April 7, 2021, 9 a.m. N/A 0.1 ppb (1) 0.3 ppb (1) N/A N/A 0.0 ppb (0) 41.0 ppb (38) 0.11 ppb (2) N/A 0.2 μg/m3 (1) 38.0
 
April 7, 2021, 8 a.m. N/A 0.1 ppb (1) 0.3 ppb (1) N/A N/A 0.0 ppb (0) 39.0 ppb (37) 0.11 ppb (2) N/A 0.2 μg/m3 (1) 37.0
 
April 7, 2021, 7 a.m. N/A 0.1 ppb (1) 0.3 ppb (1) N/A N/A 0.0 ppb (0) 38.0 ppb (36) 0.11 ppb (2) N/A 0.2 μg/m3 (1) 36.0
 
April 7, 2021, 6 a.m. N/A 0.1 ppb (1) 0.3 ppb (1) N/A N/A 0.0 ppb (0) 37.0 ppb (35) N/A N/A 0.1 μg/m3 (1) 35.0
 
April 7, 2021, 5 a.m. N/A 0.1 ppb (1) 0.2 ppb (1) N/A N/A 0.0 ppb (0) 38.0 ppb (36) N/A N/A 0.1 μg/m3 (1) 36.0
 
April 7, 2021, 4 a.m. N/A 0.0 ppb (0) 0.3 ppb (1) N/A N/A 0.0 ppb (0) 39.0 ppb (37) 0.11 ppb (2) N/A 0.2 μg/m3 (1) 37.0
 
April 7, 2021, 3 a.m. N/A 0.1 ppb (1) 0.3 ppb (1) N/A N/A N/A 40.0 ppb (38) 0.11 ppb (2) N/A 0.6 μg/m3 (3) 38.0
 
April 7, 2021, 2 a.m. N/A 0.0 ppb (0) 0.4 ppb (1) N/A N/A N/A 40.0 ppb (38) 0.11 ppb (2) N/A 0.7 μg/m3 (3) 38.0
 
April 7, 2021, 1 a.m. N/A 0.0 ppb (0) 0.7 ppb (1) N/A N/A 0.0 ppb (0) 41.0 ppb (38) 0.12 ppb (2) N/A 0.7 μg/m3 (3) 38.0
 
April 7, 2021, midnight N/A 0.0 ppb (0) 0.3 ppb (1) N/A N/A 0.0 ppb (0) 40.0 ppb (38) 0.11 ppb (2) N/A 0.4 μg/m3 (2) 38.0
 
April 6, 2021, 11 p.m. N/A 0.1 ppb (1) 0.8 ppb (1) N/A N/A 0.0 ppb (0) 41.0 ppb (38) 0.11 ppb (2) N/A 0.6 μg/m3 (3) 38.0
 
April 6, 2021, 10 p.m. N/A 0.1 ppb (1) 0.8 ppb (1) N/A N/A 0.0 ppb (0) 42.0 ppb (39) 0.11 ppb (2) N/A 1.1 μg/m3 (5) 39.0
 
April 6, 2021, 9 p.m. N/A 0.1 ppb (1) 0.4 ppb (1) N/A N/A 0.0 ppb (0) 41.0 ppb (38) 0.12 ppb (2) N/A 1.4 μg/m3 (6) 38.0
 
April 6, 2021, 8 p.m. N/A 0.2 ppb (1) 0.5 ppb (1) N/A N/A 0.0 ppb (0) 38.0 ppb (36) 0.13 ppb (2) N/A 1.6 μg/m3 (7) 36.0
 
April 6, 2021, 7 p.m. N/A 0.1 ppb (1) 0.4 ppb (1) N/A N/A 0.0 ppb (0) 40.0 ppb (38) 0.13 ppb (2) N/A 1.8 μg/m3 (8) 38.0
 
April 6, 2021, 6 p.m. N/A 0.1 ppb (1) 0.3 ppb (1) N/A N/A 0.0 ppb (0) 39.0 ppb (37) 0.13 ppb (2) N/A 1.8 μg/m3 (8) 37.0
 
April 6, 2021, 5 p.m. N/A 0.1 ppb (1) 0.6 ppb (1) N/A N/A 0.0 ppb (0) 35.0 ppb (33) 0.13 ppb (2) N/A 2.1 μg/m3 (9) 33.0
 
April 6, 2021, 4 p.m. N/A 0.0 ppb (0) 0.6 ppb (1) N/A N/A 0.0 ppb (0) 34.0 ppb (32) 0.13 ppb (2) N/A 2.2 μg/m3 (10) 32.0
 
April 6, 2021, 3 p.m. N/A 0.0 ppb (0) 0.4 ppb (1) N/A N/A 0.0 ppb (0) 35.0 ppb (33) 0.12 ppb (2) N/A 2.0 μg/m3 (9) 33.0
 
April 6, 2021, 2 p.m. N/A 0.0 ppb (0) 0.3 ppb (1) N/A N/A 0.0 ppb (0) 35.0 ppb (33) 0.12 ppb (2) N/A 1.6 μg/m3 (7) 33.0
 
April 6, 2021, 1 p.m. N/A 0.1 ppb (1) 0.3 ppb (1) N/A N/A 0.0 ppb (0) 35.0 ppb (33) 0.12 ppb (2) N/A 1.3 μg/m3 (6) 33.0
 
April 6, 2021, noon N/A 0.1 ppb (1) 0.4 ppb (1) N/A N/A 0.0 ppb (0) 36.0 ppb (34) 0.12 ppb (2) N/A 1.2 μg/m3 (5) 34.0
 
April 6, 2021, 11 a.m. N/A 0.1 ppb (1) 0.8 ppb (1) N/A N/A 0.0 ppb (0) 34.0 ppb (32) 0.13 ppb (2) N/A 1.4 μg/m3 (6) 32.0
 
April 6, 2021, 10 a.m. N/A 0.1 ppb (1) 0.5 ppb (1) N/A N/A 0.0 ppb (0) 36.0 ppb (34) 0.13 ppb (2) N/A 1.6 μg/m3 (7) 34.0
 
April 6, 2021, 9 a.m. N/A 0.0 ppb (0) 0.5 ppb (1) N/A N/A N/A 37.0 ppb (35) 0.13 ppb (2) N/A 1.6 μg/m3 (7) 35.0
 
April 6, 2021, 8 a.m. N/A 0.0 ppb (0) 0.3 ppb (1) N/A N/A N/A 35.0 ppb (33) 0.13 ppb (2) N/A 1.5 μg/m3 (7) 33.0
 
April 6, 2021, 7 a.m. N/A 0.0 ppb (0) 0.2 ppb (1) N/A N/A 0.0 ppb (0) 35.0 ppb (33) 0.13 ppb (2) N/A 1.5 μg/m3 (7) 33.0
 
April 6, 2021, 6 a.m. N/A 0.0 ppb (0) 0.2 ppb (1) N/A N/A 0.0 ppb (0) 36.0 ppb (34) N/A N/A 1.6 μg/m3 (7) 34.0
 
April 6, 2021, 5 a.m. N/A 0.0 ppb (0) 0.3 ppb (1) N/A N/A 0.0 ppb (0) 39.0 ppb (37) N/A N/A 1.7 μg/m3 (8) 37.0
 
April 6, 2021, 4 a.m. N/A 0.1 ppb (1) 0.3 ppb (1) N/A N/A 0.0 ppb (0) 40.0 ppb (38) 0.14 ppb (2) N/A 1.6 μg/m3 (7) 38.0
 
April 6, 2021, 3 a.m. N/A 0.1 ppb (1) 0.5 ppb (1) N/A N/A 0.0 ppb (0) 39.0 ppb (37) 0.15 ppb (2) N/A 1.8 μg/m3 (8) 37.0