AQSQID: 530090013

Site Name: Cheeka Peak

Location: Wa'atch, WA

Reporting: True, Located: True

Current AQI: 36.0

Wa'atch WA, US: 48.2867, -124.6203

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
March 22, 2019, 4 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 1.6 μg/m3 (7) 36.0
 
March 22, 2019, 3 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 0.7 μg/m3 (3) 35.0
 
March 22, 2019, 2 a.m. N/A 0.0 ppb (0) 0.2 ppb (0) N/A N/A 0.0 ppb (0) N/A 0.11 ppb (1) N/A 0.6 μg/m3 (2) 2.0
 
March 22, 2019, 1 a.m. N/A 0.0 ppb (0) 0.5 ppb (0) N/A N/A 0.0 ppb (0) 48.0 ppb (37) 0.11 ppb (1) N/A 0.9 μg/m3 (4) 37.0
 
March 22, 2019, midnight N/A 0.0 ppb (0) 0.4 ppb (0) N/A N/A 0.0 ppb (0) 46.0 ppb (35) 0.1 ppb (1) N/A 2.0 μg/m3 (8) 35.0
 
March 21, 2019, 11 p.m. N/A 0.0 ppb (0) 0.3 ppb (0) N/A N/A 0.0 ppb (0) 42.0 ppb (32) 0.11 ppb (1) N/A 2.7 μg/m3 (11) 32.0
 
March 21, 2019, 10 p.m. N/A 0.0 ppb (0) 0.2 ppb (0) N/A N/A 0.0 ppb (0) 43.0 ppb (33) 0.1 ppb (1) N/A 2.3 μg/m3 (10) 33.0
 
March 21, 2019, 9 p.m. N/A 0.0 ppb (0) 0.3 ppb (0) N/A N/A 0.0 ppb (0) 43.0 ppb (33) 0.1 ppb (1) N/A 2.9 μg/m3 (12) 33.0
 
March 21, 2019, 8 p.m. N/A 0.0 ppb (0) 0.4 ppb (0) N/A N/A 0.0 ppb (0) 44.0 ppb (34) 0.11 ppb (1) N/A 2.8 μg/m3 (12) 34.0
 
March 21, 2019, 7 p.m. N/A 0.0 ppb (0) 0.3 ppb (0) N/A N/A 0.0 ppb (0) 44.0 ppb (34) 0.11 ppb (1) N/A 2.8 μg/m3 (12) 34.0
 
March 21, 2019, 6 p.m. N/A 0.0 ppb (0) 0.3 ppb (0) N/A N/A 0.0 ppb (0) 45.0 ppb (35) 0.11 ppb (1) N/A 3.2 μg/m3 (13) 35.0
 
March 21, 2019, 5 p.m. N/A 0.0 ppb (0) 0.3 ppb (0) N/A N/A 0.0 ppb (0) 45.0 ppb (35) 0.12 ppb (1) N/A 3.3 μg/m3 (14) 35.0
 
March 21, 2019, 4 p.m. N/A 0.0 ppb (0) 0.4 ppb (0) N/A N/A 0.0 ppb (0) 45.0 ppb (35) 0.12 ppb (1) N/A 2.3 μg/m3 (10) 35.0
 
March 21, 2019, 3 p.m. N/A 0.0 ppb (0) 0.4 ppb (0) N/A N/A 0.0 ppb (0) 45.0 ppb (35) 0.12 ppb (1) N/A 1.1 μg/m3 (5) 35.0
 
March 21, 2019, 2 p.m. N/A N/A 0.3 ppb (0) N/A N/A 0.0 ppb (0) 44.0 ppb (34) 0.12 ppb (1) N/A 0.9 μg/m3 (4) 34.0
 
March 21, 2019, 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 1.0 μg/m3 (4) 32.0
 
March 21, 2019, noon N/A N/A 0.5 ppb (0) N/A N/A 0.0 ppb (0) 40.0 ppb (31) 0.12 ppb (1) N/A 2.4 μg/m3 (10) 31.0
 
March 21, 2019, 11 a.m. N/A 0.0 ppb (0) 0.5 ppb (0) N/A N/A N/A 38.0 ppb (29) 0.12 ppb (1) N/A 2.0 μg/m3 (8) 29.0
 
March 21, 2019, 10 a.m. N/A 0.0 ppb (0) 0.9 ppb (1) N/A N/A 0.0 ppb (0) 40.0 ppb (31) 0.11 ppb (1) N/A 3.7 μg/m3 (15) 31.0
 
March 21, 2019, 9 a.m. N/A 0.0 ppb (0) 0.8 ppb (1) N/A N/A 0.0 ppb (0) 54.0 ppb (42) 0.11 ppb (1) N/A 3.4 μg/m3 (14) 42.0
 
March 21, 2019, 8 a.m. N/A 0.0 ppb (0) 0.9 ppb (1) N/A N/A 0.0 ppb (0) 54.0 ppb (42) 0.1 ppb (1) N/A 3.7 μg/m3 (15) 42.0
 
March 21, 2019, 7 a.m. N/A 0.0 ppb (0) 0.9 ppb (1) N/A N/A 0.0 ppb (0) 55.0 ppb (42) 0.11 ppb (1) N/A 3.4 μg/m3 (14) 42.0
 
March 21, 2019, 6 a.m. N/A 0.0 ppb (0) 0.9 ppb (1) N/A N/A 0.0 ppb (0) 56.0 ppb (43) N/A N/A 3.1 μg/m3 (13) 43.0
 
March 21, 2019, 5 a.m. N/A 0.0 ppb (0) 0.9 ppb (1) N/A N/A 0.0 ppb (0) 58.0 ppb (45) 0.12 ppb (1) N/A 2.6 μg/m3 (11) 45.0
 
March 21, 2019, 4 a.m. N/A 0.0 ppb (0) 0.9 ppb (1) N/A N/A 0.0 ppb (0) 57.0 ppb (44) 0.11 ppb (1) N/A 2.5 μg/m3 (10) 44.0
 
March 21, 2019, 3 a.m. N/A 0.0 ppb (0) 0.7 ppb (1) N/A N/A 0.0 ppb (0) 53.0 ppb (41) 0.11 ppb (1) N/A 2.2 μg/m3 (9) 41.0
 
March 21, 2019, 2 a.m. N/A 0.0 ppb (0) 0.8 ppb (1) N/A N/A 0.0 ppb (0) 53.0 ppb (41) 0.11 ppb (1) N/A 2.0 μg/m3 (8) 41.0
 
March 21, 2019, 1 a.m. N/A 0.0 ppb (0) 1.2 ppb (1) N/A N/A 0.0 ppb (0) 52.0 ppb (40) 0.11 ppb (1) N/A 2.4 μg/m3 (10) 40.0
 
March 21, 2019, midnight N/A 0.0 ppb (0) 1.0 ppb (1) N/A N/A 0.0 ppb (0) 53.0 ppb (41) 0.11 ppb (1) N/A 2.3 μg/m3 (10) 41.0
 
March 20, 2019, 11 p.m. N/A 0.0 ppb (0) 1.1 ppb (1) N/A N/A 0.0 ppb (0) 53.0 ppb (41) 0.1 ppb (1) N/A 2.6 μg/m3 (11) 41.0
 
March 20, 2019, 10 p.m. N/A 0.0 ppb (0) 1.1 ppb (1) N/A N/A 0.0 ppb (0) 53.0 ppb (41) 0.1 ppb (1) N/A 2.4 μg/m3 (10) 41.0
 
March 20, 2019, 9 p.m. N/A 0.0 ppb (0) 1.2 ppb (1) N/A N/A 0.0 ppb (0) 51.0 ppb (39) 0.1 ppb (1) N/A 2.4 μg/m3 (10) 39.0
 
March 20, 2019, 8 p.m. N/A 0.0 ppb (0) 1.2 ppb (1) N/A N/A 0.0 ppb (0) 50.0 ppb (38) 0.1 ppb (1) N/A 2.3 μg/m3 (10) 38.0
 
March 20, 2019, 7 p.m. N/A 0.0 ppb (0) 1.5 ppb (1) N/A N/A 0.0 ppb (0) 48.0 ppb (37) 0.11 ppb (1) N/A 2.3 μg/m3 (10) 37.0
 
March 20, 2019, 6 p.m. N/A 0.1 ppb (0) 1.6 ppb (1) N/A N/A 0.0 ppb (0) 46.0 ppb (35) 0.1 ppb (1) N/A 2.2 μg/m3 (9) 35.0
 
March 20, 2019, 5 p.m. N/A 0.1 ppb (0) 1.9 ppb (2) N/A N/A 1.0 ppb (1) 45.0 ppb (35) 0.11 ppb (1) N/A 2.4 μg/m3 (10) 35.0
 
March 20, 2019, 4 p.m. N/A 0.0 ppb (0) 1.9 ppb (2) N/A N/A 1.0 ppb (1) 46.0 ppb (35) 0.12 ppb (1) N/A 2.4 μg/m3 (10) 35.0
 
March 20, 2019, 3 p.m. N/A 0.0 ppb (0) 1.8 ppb (2) N/A N/A 1.0 ppb (1) 47.0 ppb (36) 0.11 ppb (1) N/A 2.5 μg/m3 (10) 36.0
 
March 20, 2019, 2 p.m. N/A 0.0 ppb (0) 1.8 ppb (2) N/A N/A 1.0 ppb (1) 47.0 ppb (36) 0.11 ppb (1) N/A 2.5 μg/m3 (10) 36.0
 
March 20, 2019, 1 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 47.0 ppb (36) 0.12 ppb (1) N/A 2.8 μg/m3 (12) 36.0
 
March 20, 2019, noon N/A 0.0 ppb (0) 2.3 ppb (2) N/A N/A 0.0 ppb (0) 47.0 ppb (36) 0.12 ppb (1) N/A 2.7 μg/m3 (11) 36.0
 
March 20, 2019, 11 a.m. N/A 0.0 ppb (0) 2.7 ppb (3) N/A N/A N/A 46.0 ppb (35) 0.12 ppb (1) N/A 2.6 μg/m3 (11) 35.0
 
March 20, 2019, 10 a.m. N/A 0.0 ppb (0) 3.0 ppb (3) N/A N/A 0.0 ppb (0) 47.0 ppb (36) 0.13 ppb (1) N/A 2.7 μg/m3 (11) 36.0
 
March 20, 2019, 9 a.m. N/A 0.0 ppb (0) 3.2 ppb (3) N/A N/A 0.0 ppb (0) 47.0 ppb (36) 0.13 ppb (1) N/A 2.8 μg/m3 (12) 36.0
 
March 20, 2019, 8 a.m. N/A 0.0 ppb (0) 3.0 ppb (3) N/A N/A 0.0 ppb (0) 47.0 ppb (36) 0.12 ppb (1) N/A 2.7 μg/m3 (11) 36.0
 
March 20, 2019, 7 a.m. N/A 0.0 ppb (0) 3.0 ppb (3) N/A N/A 0.0 ppb (0) 48.0 ppb (37) 0.12 ppb (1) N/A 2.8 μg/m3 (12) 37.0
 
March 20, 2019, 6 a.m. N/A 0.0 ppb (0) 3.3 ppb (3) N/A N/A 0.0 ppb (0) 49.0 ppb (38) N/A N/A 2.9 μg/m3 (12) 38.0
 
March 20, 2019, 5 a.m. N/A 0.0 ppb (0) 3.5 ppb (3) N/A N/A 0.0 ppb (0) 51.0 ppb (39) 0.13 ppb (1) N/A 3.0 μg/m3 (12) 39.0
 
March 20, 2019, 4 a.m. N/A 0.0 ppb (0) 3.2 ppb (3) N/A N/A 0.0 ppb (0) 53.0 ppb (41) 0.13 ppb (1) N/A 3.0 μg/m3 (12) 41.0
 
March 20, 2019, 3 a.m. N/A 0.0 ppb (0) 2.9 ppb (3) N/A N/A 0.0 ppb (0) 55.0 ppb (42) 0.13 ppb (1) N/A 2.9 μg/m3 (12) 42.0
 
March 20, 2019, 2 a.m. N/A 0.0 ppb (0) 2.7 ppb (3) N/A N/A 0.0 ppb (0) N/A 0.12 ppb (1) N/A 2.7 μg/m3 (11) 11.0
 
March 20, 2019, 1 a.m. N/A 0.0 ppb (0) 2.5 ppb (2) N/A N/A 0.0 ppb (0) 58.0 ppb (45) 0.13 ppb (1) N/A 2.6 μg/m3 (11) 45.0
 
March 20, 2019, midnight N/A 0.1 ppb (0) 2.4 ppb (2) N/A N/A 0.0 ppb (0) 56.0 ppb (43) 0.13 ppb (1) N/A 2.6 μg/m3 (11) 43.0
 
March 19, 2019, 11 p.m. N/A 0.0 ppb (0) 2.5 ppb (2) N/A N/A 0.0 ppb (0) 55.0 ppb (42) 0.13 ppb (1) N/A 2.4 μg/m3 (10) 42.0
 
March 19, 2019, 10 p.m. N/A 0.0 ppb (0) 2.0 ppb (2) N/A N/A 0.0 ppb (0) 55.0 ppb (42) 0.12 ppb (1) N/A 2.3 μg/m3 (10) 42.0
 
March 19, 2019, 9 p.m. N/A 0.0 ppb (0) 1.4 ppb (1) N/A N/A 0.0 ppb (0) 55.0 ppb (42) 0.11 ppb (1) N/A 2.2 μg/m3 (9) 42.0
 
March 19, 2019, 8 p.m. N/A 0.0 ppb (0) 1.3 ppb (1) N/A N/A 0.0 ppb (0) 53.0 ppb (41) 0.11 ppb (1) N/A 2.1 μg/m3 (9) 41.0
 
March 19, 2019, 7 p.m. N/A 0.1 ppb (0) 1.5 ppb (1) N/A N/A 0.0 ppb (0) 51.0 ppb (39) 0.12 ppb (1) N/A 2.2 μg/m3 (9) 39.0
 
March 19, 2019, 6 p.m. N/A 0.0 ppb (0) 1.6 ppb (1) N/A N/A 0.0 ppb (0) 50.0 ppb (38) 0.12 ppb (1) N/A 2.0 μg/m3 (8) 38.0
 
March 19, 2019, 5 p.m. N/A 0.1 ppb (0) 1.6 ppb (1) N/A N/A 0.0 ppb (0) 49.0 ppb (38) 0.12 ppb (1) N/A 2.0 μg/m3 (8) 38.0
 
March 19, 2019, 4 p.m. N/A 0.1 ppb (0) 1.8 ppb (2) N/A N/A 0.0 ppb (0) 47.0 ppb (36) 0.12 ppb (1) N/A 2.0 μg/m3 (8) 36.0
 
March 19, 2019, 3 p.m. N/A 0.0 ppb (0) 1.7 ppb (2) N/A N/A 0.0 ppb (0) 47.0 ppb (36) 0.12 ppb (1) N/A 2.1 μg/m3 (9) 36.0
 
March 19, 2019, 2 p.m. N/A 0.0 ppb (0) 1.5 ppb (1) N/A N/A 0.0 ppb (0) 47.0 ppb (36) 0.12 ppb (1) N/A 2.1 μg/m3 (9) 36.0
 
March 19, 2019, 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 2.2 μg/m3 (9) 35.0
 
March 19, 2019, noon N/A 0.0 ppb (0) 2.3 ppb (2) N/A N/A 0.0 ppb (0) 45.0 ppb (35) 0.12 ppb (1) N/A 2.2 μg/m3 (9) 35.0
 
March 19, 2019, 11 a.m. N/A 0.0 ppb (0) 2.7 ppb (3) N/A N/A N/A 45.0 ppb (35) 0.12 ppb (1) N/A 2.3 μg/m3 (10) 35.0
 
March 19, 2019, 10 a.m. N/A 0.0 ppb (0) 2.9 ppb (3) N/A N/A 0.0 ppb (0) 45.0 ppb (35) 0.13 ppb (1) N/A 2.4 μg/m3 (10) 35.0
 
March 19, 2019, 9 a.m. N/A 0.0 ppb (0) 2.8 ppb (3) N/A N/A 0.0 ppb (0) 45.0 ppb (35) 0.12 ppb (1) N/A 2.6 μg/m3 (11) 35.0
 
March 19, 2019, 8 a.m. N/A 0.0 ppb (0) 2.9 ppb (3) N/A N/A 0.0 ppb (0) 47.0 ppb (36) 0.12 ppb (1) N/A 2.6 μg/m3 (11) 36.0
 
March 19, 2019, 7 a.m. N/A 0.0 ppb (0) 3.6 ppb (3) N/A N/A 0.0 ppb (0) 46.0 ppb (35) 0.13 ppb (1) N/A 2.9 μg/m3 (12) 35.0
 
March 19, 2019, 6 a.m. N/A 0.0 ppb (0) 3.7 ppb (3) N/A N/A 0.0 ppb (0) 45.0 ppb (35) N/A N/A 3.5 μg/m3 (15) 35.0
 
March 19, 2019, 5 a.m. N/A 0.0 ppb (0) 2.6 ppb (2) N/A N/A 0.0 ppb (0) 48.0 ppb (37) 0.12 ppb (1) N/A 3.0 μg/m3 (12) 37.0
 
March 19, 2019, 4 a.m. N/A 0.0 ppb (0) 1.7 ppb (2) N/A N/A 0.0 ppb (0) 50.0 ppb (38) 0.12 ppb (1) N/A 2.4 μg/m3 (10) 38.0
 
March 19, 2019, 3 a.m. N/A 0.0 ppb (0) 1.3 ppb (1) N/A N/A 0.0 ppb (0) 50.0 ppb (38) 0.12 ppb (1) N/A 2.1 μg/m3 (9) 38.0
 
March 19, 2019, 2 a.m. N/A 0.0 ppb (0) 1.2 ppb (1) N/A N/A 0.0 ppb (0) 50.0 ppb (38) 0.11 ppb (1) N/A 2.0 μg/m3 (8) 38.0
 
March 19, 2019, 1 a.m. N/A 0.0 ppb (0) 1.1 ppb (1) N/A N/A 0.0 ppb (0) 50.0 ppb (38) 0.12 ppb (1) N/A 1.9 μg/m3 (8) 38.0
 
March 19, 2019, midnight N/A 0.0 ppb (0) 0.8 ppb (1) N/A N/A 0.0 ppb (0) 50.0 ppb (38) 0.12 ppb (1) N/A 1.8 μg/m3 (8) 38.0
 
March 18, 2019, 11 p.m. N/A 0.0 ppb (0) 0.7 ppb (1) N/A N/A 0.0 ppb (0) 50.0 ppb (38) 0.11 ppb (1) N/A 1.8 μg/m3 (8) 38.0
 
March 18, 2019, 10 p.m. N/A 0.0 ppb (0) 0.8 ppb (1) N/A N/A 0.0 ppb (0) 49.0 ppb (38) 0.11 ppb (1) N/A 2.0 μg/m3 (8) 38.0
 
March 18, 2019, 9 p.m. N/A 0.0 ppb (0) 0.9 ppb (1) N/A N/A 0.0 ppb (0) 48.0 ppb (37) 0.1 ppb (1) N/A 2.1 μg/m3 (9) 37.0
 
March 18, 2019, 8 p.m. N/A 0.0 ppb (0) 1.0 ppb (1) N/A N/A 0.0 ppb (0) 45.0 ppb (35) 0.11 ppb (1) N/A 2.2 μg/m3 (9) 35.0
 
March 18, 2019, 7 p.m. N/A 0.0 ppb (0) 1.2 ppb (1) N/A N/A 0.0 ppb (0) 43.0 ppb (33) 0.11 ppb (1) N/A 2.2 μg/m3 (9) 33.0
 
March 18, 2019, 6 p.m. N/A 0.0 ppb (0) 1.1 ppb (1) N/A N/A 0.0 ppb (0) 44.0 ppb (34) 0.11 ppb (1) N/A 2.1 μg/m3 (9) 34.0
 
March 18, 2019, 5 p.m. N/A 0.0 ppb (0) 1.1 ppb (1) N/A N/A 0.0 ppb (0) 45.0 ppb (35) 0.1 ppb (1) N/A 2.0 μg/m3 (8) 35.0
 
March 18, 2019, 4 p.m. N/A 0.1 ppb (0) 1.6 ppb (1) N/A N/A 0.0 ppb (0) 42.0 ppb (32) 0.11 ppb (1) N/A 2.4 μg/m3 (10) 32.0
 
March 18, 2019, 3 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 43.0 ppb (33) 0.11 ppb (1) N/A 2.2 μg/m3 (9) 33.0
 
March 18, 2019, 2 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 42.0 ppb (32) 0.11 ppb (1) N/A 2.4 μg/m3 (10) 32.0
 
March 18, 2019, 1 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 41.0 ppb (32) 0.11 ppb (1) N/A 2.5 μg/m3 (10) 32.0
 
March 18, 2019, noon N/A N/A N/A N/A N/A 0.0 ppb (0) 40.0 ppb (31) 0.12 ppb (1) N/A 2.7 μg/m3 (11) 31.0
 
March 18, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (32) 0.12 ppb (1) N/A N/A 32.0
 
March 18, 2019, 10 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 42.0 ppb (32) N/A N/A 2.6 μg/m3 (11) 32.0
 
March 18, 2019, 9 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 44.0 ppb (34) N/A N/A 2.3 μg/m3 (10) 34.0
 
March 18, 2019, 8 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 44.0 ppb (34) 0.11 ppb (1) N/A 2.5 μg/m3 (10) 34.0
 
March 18, 2019, 7 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 45.0 ppb (35) 0.12 ppb (1) N/A 2.7 μg/m3 (11) 35.0
 
March 18, 2019, 6 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 45.0 ppb (35) N/A N/A 2.6 μg/m3 (11) 35.0
 
March 18, 2019, 5 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 45.0 ppb (35) 0.12 ppb (1) N/A 2.8 μg/m3 (12) 35.0
 
March 18, 2019, 4 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 45.0 ppb (35) 0.12 ppb (1) N/A 2.5 μg/m3 (10) 35.0
 
March 18, 2019, 3 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 44.0 ppb (34) 0.11 ppb (1) N/A 2.6 μg/m3 (11) 34.0
 
March 18, 2019, 2 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) N/A 0.11 ppb (1) N/A 2.4 μg/m3 (10) 10.0
 
March 18, 2019, 1 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 44.0 ppb (34) 0.12 ppb (1) N/A 2.5 μg/m3 (10) 34.0
 
March 18, 2019, midnight N/A N/A N/A N/A N/A 0.0 ppb (0) 44.0 ppb (34) 0.12 ppb (1) N/A 2.5 μg/m3 (10) 34.0
 
March 17, 2019, 11 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 45.0 ppb (35) 0.12 ppb (1) N/A 2.2 μg/m3 (9) 35.0
 
March 17, 2019, 10 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 44.0 ppb (34) 0.12 ppb (1) N/A 2.2 μg/m3 (9) 34.0
 
March 17, 2019, 9 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 44.0 ppb (34) 0.11 ppb (1) N/A 2.4 μg/m3 (10) 34.0
 
March 17, 2019, 8 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 43.0 ppb (33) 0.12 ppb (1) N/A 2.9 μg/m3 (12) 33.0
 
March 17, 2019, 7 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 41.0 ppb (32) 0.12 ppb (1) N/A 2.9 μg/m3 (12) 32.0
 
March 17, 2019, 6 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 37.0 ppb (28) 0.12 ppb (1) N/A 3.2 μg/m3 (13) 28.0
 
March 17, 2019, 5 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 36.0 ppb (28) 0.12 ppb (1) N/A 2.3 μg/m3 (10) 28.0
 
March 17, 2019, 4 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 39.0 ppb (30) 0.11 ppb (1) N/A 2.0 μg/m3 (8) 30.0
 
March 17, 2019, 3 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 41.0 ppb (32) 0.11 ppb (1) N/A 2.1 μg/m3 (9) 32.0
 
March 17, 2019, 2 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 43.0 ppb (33) 0.1 ppb (1) N/A 2.3 μg/m3 (10) 33.0
 
March 17, 2019, 1 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 42.0 ppb (32) 0.11 ppb (1) N/A 2.8 μg/m3 (12) 32.0
 
March 17, 2019, noon N/A N/A N/A N/A N/A 1.0 ppb (1) 41.0 ppb (32) 0.12 ppb (1) N/A 3.6 μg/m3 (15) 32.0
 
March 17, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (31) 0.13 ppb (1) N/A 4.3 μg/m3 (18) 31.0
 
March 17, 2019, 10 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 44.0 ppb (34) 0.13 ppb (1) N/A 3.0 μg/m3 (12) 34.0
 
March 17, 2019, 9 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 45.0 ppb (35) 0.13 ppb (1) N/A 2.4 μg/m3 (10) 35.0
 
March 17, 2019, 8 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 47.0 ppb (36) 0.13 ppb (1) N/A 2.7 μg/m3 (11) 36.0
 
March 17, 2019, 7 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 49.0 ppb (38) 0.12 ppb (1) N/A 2.6 μg/m3 (11) 38.0
 
March 17, 2019, 6 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 47.0 ppb (36) N/A N/A 2.5 μg/m3 (10) 36.0
 
March 17, 2019, 5 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 47.0 ppb (36) 0.13 ppb (1) N/A 2.3 μg/m3 (10) 36.0
 
March 17, 2019, 4 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 50.0 ppb (38) 0.13 ppb (1) N/A 2.3 μg/m3 (10) 38.0
 
March 17, 2019, 3 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 50.0 ppb (38) 0.13 ppb (1) N/A 2.7 μg/m3 (11) 38.0
 
March 17, 2019, 2 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 42.0 ppb (32) 0.14 ppb (2) N/A 3.1 μg/m3 (13) 32.0
 
March 17, 2019, 1 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 46.0 ppb (35) 0.14 ppb (2) N/A 2.9 μg/m3 (12) 35.0
 
March 17, 2019, midnight N/A N/A N/A N/A N/A 0.0 ppb (0) 43.0 ppb (33) 0.14 ppb (2) N/A 2.9 μg/m3 (12) 33.0
 
March 16, 2019, 11 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 43.0 ppb (33) 0.13 ppb (1) N/A 2.8 μg/m3 (12) 33.0
 
March 16, 2019, 10 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 45.0 ppb (35) 0.13 ppb (1) N/A 2.5 μg/m3 (10) 35.0
 
March 16, 2019, 9 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 39.0 ppb (30) 0.13 ppb (1) N/A 2.8 μg/m3 (12) 30.0
 
March 16, 2019, 8 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 2.7 μg/m3 (11) 31.0
 
March 16, 2019, 7 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 39.0 ppb (30) 0.13 ppb (1) N/A 2.8 μg/m3 (12) 30.0
 
March 16, 2019, 6 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 36.0 ppb (28) 0.13 ppb (1) N/A 4.1 μg/m3 (17) 28.0
 
March 16, 2019, 5 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 34.0 ppb (26) 0.14 ppb (2) N/A 4.8 μg/m3 (20) 26.0
 
March 16, 2019, 4 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 34.0 ppb (26) 0.15 ppb (2) N/A 5.6 μg/m3 (23) 26.0
 
March 16, 2019, 3 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 36.0 ppb (28) 0.14 ppb (2) N/A 4.5 μg/m3 (19) 28.0
 
March 16, 2019, 2 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 36.0 ppb (28) 0.14 ppb (2) N/A 3.5 μg/m3 (15) 28.0
 
March 16, 2019, 1 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 36.0 ppb (28) 0.14 ppb (2) N/A 3.6 μg/m3 (15) 28.0
 
March 16, 2019, noon N/A N/A N/A N/A N/A 0.0 ppb (0) 37.0 ppb (28) 0.15 ppb (2) N/A 3.8 μg/m3 (16) 28.0
 
March 16, 2019, 11 a.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (30) 0.14 ppb (2) N/A 4.2 μg/m3 (18) 30.0
 
March 16, 2019, 10 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 42.0 ppb (32) 0.14 ppb (2) N/A 3.7 μg/m3 (15) 32.0
 
March 16, 2019, 9 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 43.0 ppb (33) 0.13 ppb (1) N/A 2.5 μg/m3 (10) 33.0
 
March 16, 2019, 8 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 45.0 ppb (35) 0.12 ppb (1) N/A 1.6 μg/m3 (7) 35.0
 
March 16, 2019, 7 a.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 1.4 μg/m3 (6) 35.0
 
March 16, 2019, 6 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 46.0 ppb (35) N/A N/A 1.6 μg/m3 (7) 35.0
 
March 16, 2019, 5 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 43.0 ppb (33) 0.14 ppb (2) N/A 3.1 μg/m3 (13) 33.0
 
March 16, 2019, 4 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 38.0 ppb (29) 0.15 ppb (2) N/A 4.0 μg/m3 (17) 29.0
 
March 16, 2019, 3 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 36.0 ppb (28) 0.15 ppb (2) N/A 4.4 μg/m3 (18) 28.0
 
March 16, 2019, 2 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) N/A 0.15 ppb (2) N/A 3.6 μg/m3 (15) 15.0
 
March 16, 2019, 1 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 37.0 ppb (28) 0.14 ppb (2) N/A 2.1 μg/m3 (9) 28.0
 
March 16, 2019, midnight N/A N/A N/A N/A N/A 0.0 ppb (0) 38.0 ppb (29) 0.13 ppb (1) N/A 1.7 μg/m3 (7) 29.0
 
March 15, 2019, 11 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 33.0 ppb (25) 0.13 ppb (1) N/A 2.3 μg/m3 (10) 25.0
 
March 15, 2019, 10 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 34.0 ppb (26) 0.13 ppb (1) N/A 2.5 μg/m3 (10) 26.0
 
March 15, 2019, 9 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 28.0 ppb (22) 0.14 ppb (2) N/A 3.5 μg/m3 (15) 22.0
 
March 15, 2019, 8 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 30.0 ppb (23) 0.13 ppb (1) N/A 2.8 μg/m3 (12) 23.0
 
March 15, 2019, 7 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 35.0 ppb (27) 0.12 ppb (1) N/A 1.4 μg/m3 (6) 27.0
 
March 15, 2019, 6 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 38.0 ppb (29) 0.12 ppb (1) N/A 1.2 μg/m3 (5) 29.0
 
March 15, 2019, 5 p.m. N/A 0.0 ppb (0) 0.5 ppb (0) N/A N/A 0.0 ppb (0) 41.0 ppb (32) 0.13 ppb (1) N/A 1.1 μg/m3 (5) 32.0
 
March 15, 2019, 4 p.m. N/A 0.0 ppb (0) 0.6 ppb (1) 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 15, 2019, 3 p.m. N/A 0.0 ppb (0) 1.0 ppb (1) N/A N/A 0.0 ppb (0) 37.0 ppb (28) 0.13 ppb (1) N/A 0.8 μg/m3 (3) 28.0
 
March 15, 2019, 2 p.m. N/A 0.0 ppb (0) 1.1 ppb (1) N/A N/A 0.0 ppb (0) 36.0 ppb (28) 0.14 ppb (2) N/A 0.6 μg/m3 (2) 28.0
 
March 15, 2019, 1 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 35.0 ppb (27) 0.14 ppb (2) N/A 0.6 μg/m3 (2) 27.0
 
March 15, 2019, noon N/A 0.0 ppb (0) 0.6 ppb (1) N/A N/A 0.0 ppb (0) 38.0 ppb (29) 0.14 ppb (2) N/A 0.6 μg/m3 (2) 29.0
 
March 15, 2019, 11 a.m. N/A 0.0 ppb (0) 0.8 ppb (1) N/A N/A N/A 36.0 ppb (28) 0.13 ppb (1) N/A 0.6 μg/m3 (2) 28.0
 
March 15, 2019, 10 a.m. N/A 0.0 ppb (0) 0.3 ppb (0) N/A N/A 0.0 ppb (0) 39.0 ppb (30) 0.12 ppb (1) N/A 0.5 μg/m3 (2) 30.0
 
March 15, 2019, 9 a.m. N/A 0.0 ppb (0) 0.1 ppb (0) N/A N/A 0.0 ppb (0) 43.0 ppb (33) 0.11 ppb (1) N/A 0.5 μg/m3 (2) 33.0
 
March 15, 2019, 8 a.m. N/A 0.0 ppb (0) 0.3 ppb (0) N/A N/A 0.0 ppb (0) 42.0 ppb (32) 0.11 ppb (1) N/A 0.5 μg/m3 (2) 32.0
 
March 15, 2019, 7 a.m. N/A 0.0 ppb (0) 0.1 ppb (0) N/A N/A 0.0 ppb (0) 44.0 ppb (34) 0.11 ppb (1) N/A 0.5 μg/m3 (2) 34.0
 
March 15, 2019, 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 0.8 μg/m3 (3) 34.0
 
March 15, 2019, 5 a.m. N/A 0.0 ppb (0) 0.1 ppb (0) N/A N/A 0.0 ppb (0) 43.0 ppb (33) 0.1 ppb (1) N/A 0.7 μg/m3 (3) 33.0