AQSQID: 840040059999

Site Name: Grand Canyon Ozone Bench

Location: Grand Cyn (Mather Point Amphitheater), AZ

Reporting: True, Located: True

Current AQI: 35.0

Grand Cyn (Mather Point Amphitheater) AZ, US: 36.060444, -112.107028

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
April 5, 2020, 7 a.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (35) N/A N/A -1.3 μg/m3 (0) 35.0
 
April 5, 2020, 6 a.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (35) N/A N/A -1.3 μg/m3 (0) 35.0
 
April 5, 2020, 5 a.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (36) N/A N/A -1.4 μg/m3 (0) 36.0
 
April 5, 2020, 4 a.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (36) N/A N/A -1.3 μg/m3 (0) 36.0
 
April 5, 2020, 3 a.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (38) N/A N/A -1.2 μg/m3 (0) 38.0
 
April 5, 2020, 2 a.m. N/A N/A N/A N/A N/A N/A 50.0 ppb (38) N/A N/A -0.9 μg/m3 (0) 38.0
 
April 5, 2020, 1 a.m. N/A N/A N/A N/A N/A N/A 53.0 ppb (41) N/A N/A -0.5 μg/m3 (0) 41.0
 
April 5, 2020, midnight N/A N/A N/A N/A N/A N/A 53.0 ppb (41) N/A N/A -0.5 μg/m3 (0) 41.0
 
April 4, 2020, 11 p.m. N/A N/A N/A N/A N/A N/A 55.0 ppb (42) N/A N/A -0.2 μg/m3 (0) 42.0
 
April 4, 2020, 10 p.m. N/A N/A N/A N/A N/A N/A 55.0 ppb (42) N/A N/A -0.1 μg/m3 (0) 42.0
 
April 4, 2020, 9 p.m. N/A N/A N/A N/A N/A N/A 55.0 ppb (42) N/A N/A 0.0 μg/m3 (0) 42.0
 
April 4, 2020, 8 p.m. N/A N/A N/A N/A N/A N/A 55.0 ppb (42) N/A N/A -0.8 μg/m3 (0) 42.0
 
April 4, 2020, 7 p.m. N/A N/A N/A N/A N/A N/A 55.0 ppb (42) N/A N/A -1.3 μg/m3 (0) 42.0
 
April 4, 2020, 6 p.m. N/A N/A N/A N/A N/A N/A 56.0 ppb (43) N/A N/A -1.4 μg/m3 (0) 43.0
 
April 4, 2020, 5 p.m. N/A N/A N/A N/A N/A N/A 56.0 ppb (43) N/A N/A -1.4 μg/m3 (0) 43.0
 
April 4, 2020, 4 p.m. N/A N/A N/A N/A N/A N/A 56.0 ppb (43) N/A N/A -1.3 μg/m3 (0) 43.0
 
April 4, 2020, 3 p.m. N/A N/A N/A N/A N/A N/A 53.0 ppb (41) N/A N/A -2.0 μg/m3 (0) 41.0
 
April 4, 2020, 2 p.m. N/A N/A N/A N/A N/A N/A 51.0 ppb (39) N/A N/A -2.4 μg/m3 (0) 39.0
 
April 4, 2020, 1 p.m. N/A N/A N/A N/A N/A N/A 50.0 ppb (38) N/A N/A -2.5 μg/m3 (0) 38.0
 
April 4, 2020, noon N/A N/A N/A N/A N/A N/A 50.0 ppb (38) N/A N/A -2.5 μg/m3 (0) 38.0
 
April 4, 2020, 11 a.m. N/A N/A N/A N/A N/A N/A 50.0 ppb (38) N/A N/A -2.7 μg/m3 (0) 38.0
 
April 4, 2020, 10 a.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (38) N/A N/A -2.7 μg/m3 (0) 38.0
 
April 4, 2020, 9 a.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (36) N/A N/A -2.7 μg/m3 (0) 36.0
 
April 4, 2020, 8 a.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (35) N/A N/A -2.6 μg/m3 (0) 35.0
 
April 4, 2020, 7 a.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (34) N/A N/A -2.4 μg/m3 (0) 34.0
 
April 4, 2020, 6 a.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (33) N/A N/A -2.1 μg/m3 (0) 33.0
 
April 4, 2020, 5 a.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (34) N/A N/A -1.9 μg/m3 (0) 34.0
 
April 4, 2020, 4 a.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (35) N/A N/A -1.3 μg/m3 (0) 35.0
 
April 4, 2020, 3 a.m. N/A N/A N/A N/A N/A N/A 50.0 ppb (38) N/A N/A -0.3 μg/m3 (0) 38.0
 
April 4, 2020, 2 a.m. N/A N/A N/A N/A N/A N/A 51.0 ppb (39) N/A N/A -1.3 μg/m3 (0) 39.0
 
April 4, 2020, 1 a.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (38) N/A N/A -1.0 μg/m3 (0) 38.0
 
April 4, 2020, midnight N/A N/A N/A N/A N/A N/A 49.0 ppb (38) N/A N/A -1.0 μg/m3 (0) 38.0
 
April 3, 2020, 11 p.m. N/A N/A N/A N/A N/A N/A 51.0 ppb (39) N/A N/A -0.9 μg/m3 (0) 39.0
 
April 3, 2020, 10 p.m. N/A N/A N/A N/A N/A N/A 53.0 ppb (41) N/A N/A -0.7 μg/m3 (0) 41.0
 
April 3, 2020, 9 p.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (37) N/A N/A -1.2 μg/m3 (0) 37.0
 
April 3, 2020, 8 p.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (36) N/A N/A -1.6 μg/m3 (0) 36.0
 
April 3, 2020, 7 p.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (35) N/A N/A -1.9 μg/m3 (0) 35.0
 
April 3, 2020, 6 p.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (35) N/A N/A -2.1 μg/m3 (0) 35.0
 
April 3, 2020, 5 p.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (34) N/A N/A -2.3 μg/m3 (0) 34.0
 
April 3, 2020, 4 p.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (34) N/A N/A -2.5 μg/m3 (0) 34.0
 
April 3, 2020, 3 p.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (33) N/A N/A -2.8 μg/m3 (0) 33.0
 
April 3, 2020, 2 p.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (33) N/A N/A -3.1 μg/m3 (0) 33.0
 
April 3, 2020, 1 p.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (34) N/A N/A -3.2 μg/m3 (0) 34.0
 
April 3, 2020, noon N/A N/A N/A N/A N/A N/A 46.0 ppb (35) N/A N/A -3.1 μg/m3 (0) 35.0
 
April 3, 2020, 11 a.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (35) N/A N/A -3.0 μg/m3 (0) 35.0
 
April 3, 2020, 10 a.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (37) N/A N/A -3.0 μg/m3 (0) 37.0
 
April 3, 2020, 9 a.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (37) N/A N/A -2.9 μg/m3 (0) 37.0
 
April 3, 2020, 8 a.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (36) N/A N/A -2.8 μg/m3 (0) 36.0
 
April 3, 2020, 7 a.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (36) N/A N/A -2.7 μg/m3 (0) 36.0
 
April 3, 2020, 6 a.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (35) N/A N/A -2.6 μg/m3 (0) 35.0
 
April 3, 2020, 5 a.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (35) N/A N/A -2.4 μg/m3 (0) 35.0
 
April 3, 2020, 4 a.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (34) N/A N/A -2.2 μg/m3 (0) 34.0
 
April 3, 2020, 3 a.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (35) N/A N/A -2.0 μg/m3 (0) 35.0
 
April 3, 2020, 2 a.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (35) N/A N/A -1.6 μg/m3 (0) 35.0
 
April 3, 2020, 1 a.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (35) N/A N/A -1.1 μg/m3 (0) 35.0
 
April 3, 2020, midnight N/A N/A N/A N/A N/A N/A 44.0 ppb (34) N/A N/A -1.0 μg/m3 (0) 34.0
 
April 2, 2020, 11 p.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (34) N/A N/A -1.1 μg/m3 (0) 34.0
 
April 2, 2020, 10 p.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (35) N/A N/A -1.3 μg/m3 (0) 35.0
 
April 2, 2020, 9 p.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (36) N/A N/A -1.3 μg/m3 (0) 36.0
 
April 2, 2020, 8 p.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (38) N/A N/A -1.4 μg/m3 (0) 38.0
 
April 2, 2020, 7 p.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (38) N/A N/A -1.7 μg/m3 (0) 38.0
 
April 2, 2020, 6 p.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (38) N/A N/A -1.8 μg/m3 (0) 38.0
 
April 2, 2020, 5 p.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (38) N/A N/A -1.4 μg/m3 (0) 38.0
 
April 2, 2020, 4 p.m. N/A N/A N/A N/A N/A N/A 50.0 ppb (38) N/A N/A -0.9 μg/m3 (0) 38.0
 
April 2, 2020, 3 p.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (38) N/A N/A -1.1 μg/m3 (0) 38.0
 
April 2, 2020, 2 p.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (37) N/A N/A -0.9 μg/m3 (0) 37.0
 
April 2, 2020, 1 p.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (37) N/A N/A -0.9 μg/m3 (0) 37.0
 
April 2, 2020, noon N/A N/A N/A N/A N/A N/A 48.0 ppb (37) N/A N/A -1.1 μg/m3 (0) 37.0
 
April 2, 2020, 11 a.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (38) N/A N/A -1.3 μg/m3 (0) 38.0
 
April 2, 2020, 10 a.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (38) N/A N/A -1.6 μg/m3 (0) 38.0
 
April 2, 2020, 9 a.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (37) N/A N/A -1.6 μg/m3 (0) 37.0
 
April 2, 2020, 8 a.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (35) N/A N/A -2.0 μg/m3 (0) 35.0
 
April 2, 2020, 7 a.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (35) N/A N/A -2.1 μg/m3 (0) 35.0
 
April 2, 2020, 6 a.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (35) N/A N/A -2.0 μg/m3 (0) 35.0
 
April 2, 2020, 5 a.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (35) N/A N/A -1.8 μg/m3 (0) 35.0
 
April 2, 2020, 4 a.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (38) N/A N/A -1.6 μg/m3 (0) 38.0
 
April 2, 2020, 3 a.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (37) N/A N/A -1.5 μg/m3 (0) 37.0
 
April 2, 2020, 2 a.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (37) N/A N/A -1.2 μg/m3 (0) 37.0
 
April 2, 2020, 1 a.m. N/A N/A N/A N/A N/A N/A 52.0 ppb (40) N/A N/A -0.8 μg/m3 (0) 40.0
 
April 2, 2020, midnight N/A N/A N/A N/A N/A N/A 53.0 ppb (41) N/A N/A -0.6 μg/m3 (0) 41.0
 
April 1, 2020, 11 p.m. N/A N/A N/A N/A N/A N/A 52.0 ppb (40) N/A N/A -0.8 μg/m3 (0) 40.0
 
April 1, 2020, 10 p.m. N/A N/A N/A N/A N/A N/A 51.0 ppb (39) N/A N/A -0.9 μg/m3 (0) 39.0
 
April 1, 2020, 9 p.m. N/A N/A N/A N/A N/A N/A 51.0 ppb (39) N/A N/A -1.0 μg/m3 (0) 39.0
 
April 1, 2020, 8 p.m. N/A N/A N/A N/A N/A N/A 51.0 ppb (39) N/A N/A -1.2 μg/m3 (0) 39.0
 
April 1, 2020, 7 p.m. N/A N/A N/A N/A N/A N/A 51.0 ppb (39) N/A N/A -1.2 μg/m3 (0) 39.0
 
April 1, 2020, 6 p.m. N/A N/A N/A N/A N/A N/A 50.0 ppb (38) N/A N/A -1.3 μg/m3 (0) 38.0
 
April 1, 2020, 5 p.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (36) N/A N/A -1.7 μg/m3 (0) 36.0
 
April 1, 2020, 4 p.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (35) N/A N/A -2.2 μg/m3 (0) 35.0
 
April 1, 2020, 3 p.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (35) N/A N/A -2.4 μg/m3 (0) 35.0
 
April 1, 2020, 2 p.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (33) N/A N/A -2.4 μg/m3 (0) 33.0
 
April 1, 2020, 1 p.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (33) N/A N/A -2.2 μg/m3 (0) 33.0
 
April 1, 2020, noon N/A N/A N/A N/A N/A N/A 43.0 ppb (33) N/A N/A -2.0 μg/m3 (0) 33.0
 
April 1, 2020, 11 a.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (33) N/A N/A -2.0 μg/m3 (0) 33.0
 
April 1, 2020, 10 a.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (33) N/A N/A -1.9 μg/m3 (0) 33.0
 
April 1, 2020, 9 a.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (32) N/A N/A -1.9 μg/m3 (0) 32.0
 
April 1, 2020, 8 a.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (34) N/A N/A -1.7 μg/m3 (0) 34.0
 
April 1, 2020, 7 a.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (34) N/A N/A -1.7 μg/m3 (0) 34.0
 
April 1, 2020, 6 a.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (34) N/A N/A -1.7 μg/m3 (0) 34.0
 
April 1, 2020, 5 a.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (35) N/A N/A -1.7 μg/m3 (0) 35.0
 
April 1, 2020, 4 a.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (35) N/A N/A -0.9 μg/m3 (0) 35.0
 
April 1, 2020, 3 a.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (37) N/A N/A -1.1 μg/m3 (0) 37.0
 
April 1, 2020, 2 a.m. N/A N/A N/A N/A N/A N/A 50.0 ppb (38) N/A N/A -1.2 μg/m3 (0) 38.0
 
April 1, 2020, 1 a.m. N/A N/A N/A N/A N/A N/A 50.0 ppb (38) N/A N/A -0.9 μg/m3 (0) 38.0
 
April 1, 2020, midnight N/A N/A N/A N/A N/A N/A 51.0 ppb (39) N/A N/A -0.9 μg/m3 (0) 39.0
 
March 31, 2020, 11 p.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (38) N/A N/A -0.8 μg/m3 (0) 38.0
 
March 31, 2020, 10 p.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (37) N/A N/A -1.1 μg/m3 (0) 37.0
 
March 31, 2020, 9 p.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (36) N/A N/A -1.5 μg/m3 (0) 36.0
 
March 31, 2020, 8 p.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (37) N/A N/A -1.7 μg/m3 (0) 37.0
 
March 31, 2020, 7 p.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (37) N/A N/A -1.7 μg/m3 (0) 37.0
 
March 31, 2020, 6 p.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (35) N/A N/A -1.5 μg/m3 (0) 35.0
 
March 31, 2020, 5 p.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (35) N/A N/A -1.4 μg/m3 (0) 35.0
 
March 31, 2020, 4 p.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (38) N/A N/A -1.5 μg/m3 (0) 38.0
 
March 31, 2020, 3 p.m. N/A N/A N/A N/A N/A N/A 52.0 ppb (40) N/A N/A -1.8 μg/m3 (0) 40.0
 
March 31, 2020, 2 p.m. N/A N/A N/A N/A N/A N/A 52.0 ppb (40) N/A N/A -2.0 μg/m3 (0) 40.0
 
March 31, 2020, 1 p.m. N/A N/A N/A N/A N/A N/A 55.0 ppb (42) N/A N/A -2.0 μg/m3 (0) 42.0
 
March 31, 2020, noon N/A N/A N/A N/A N/A N/A 54.0 ppb (42) N/A N/A -2.1 μg/m3 (0) 42.0
 
March 31, 2020, 11 a.m. N/A N/A N/A N/A N/A N/A 56.0 ppb (43) N/A N/A -1.8 μg/m3 (0) 43.0
 
March 31, 2020, 10 a.m. N/A N/A N/A N/A N/A N/A 57.0 ppb (44) N/A N/A -1.6 μg/m3 (0) 44.0
 
March 31, 2020, 9 a.m. N/A N/A N/A N/A N/A N/A 55.0 ppb (42) N/A N/A -1.4 μg/m3 (0) 42.0
 
March 31, 2020, 8 a.m. N/A N/A N/A N/A N/A N/A 50.0 ppb (38) N/A N/A -2.0 μg/m3 (0) 38.0
 
March 31, 2020, 7 a.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (37) N/A N/A -2.3 μg/m3 (0) 37.0
 
March 31, 2020, 6 a.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (35) N/A N/A -2.6 μg/m3 (0) 35.0
 
March 31, 2020, 5 a.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (36) N/A N/A -2.7 μg/m3 (0) 36.0
 
March 31, 2020, 4 a.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (37) N/A N/A -2.5 μg/m3 (0) 37.0
 
March 31, 2020, 3 a.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (37) N/A N/A -2.2 μg/m3 (0) 37.0
 
March 31, 2020, 2 a.m. N/A N/A N/A N/A N/A N/A 50.0 ppb (38) N/A N/A -1.7 μg/m3 (0) 38.0
 
March 31, 2020, 1 a.m. N/A N/A N/A N/A N/A N/A 50.0 ppb (38) N/A N/A -1.4 μg/m3 (0) 38.0
 
March 31, 2020, midnight N/A N/A N/A N/A N/A N/A 49.0 ppb (38) N/A N/A -1.6 μg/m3 (0) 38.0
 
March 30, 2020, 11 p.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (37) N/A N/A -1.8 μg/m3 (0) 37.0
 
March 30, 2020, 10 p.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (36) N/A N/A -2.0 μg/m3 (0) 36.0
 
March 30, 2020, 9 p.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (36) N/A N/A -2.4 μg/m3 (0) 36.0
 
March 30, 2020, 8 p.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (37) N/A N/A -2.7 μg/m3 (0) 37.0
 
March 30, 2020, 7 p.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (37) N/A N/A -2.7 μg/m3 (0) 37.0
 
March 30, 2020, 6 p.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (38) N/A N/A -2.8 μg/m3 (0) 38.0
 
March 30, 2020, 5 p.m. N/A N/A N/A N/A N/A N/A 50.0 ppb (38) N/A N/A -2.6 μg/m3 (0) 38.0
 
March 30, 2020, 4 p.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (38) N/A N/A -2.3 μg/m3 (0) 38.0
 
March 30, 2020, 3 p.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (37) N/A N/A -1.6 μg/m3 (0) 37.0
 
March 30, 2020, 2 p.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (38) N/A N/A -1.6 μg/m3 (0) 38.0
 
March 30, 2020, 1 p.m. N/A N/A N/A N/A N/A N/A 51.0 ppb (39) N/A N/A -1.8 μg/m3 (0) 39.0
 
March 30, 2020, noon N/A N/A N/A N/A N/A N/A 52.0 ppb (40) N/A N/A -1.8 μg/m3 (0) 40.0
 
March 30, 2020, 11 a.m. N/A N/A N/A N/A N/A N/A 53.0 ppb (41) N/A N/A -1.8 μg/m3 (0) 41.0
 
March 30, 2020, 10 a.m. N/A N/A N/A N/A N/A N/A 54.0 ppb (42) N/A N/A -1.9 μg/m3 (0) 42.0
 
March 30, 2020, 9 a.m. N/A N/A N/A N/A N/A N/A 53.0 ppb (41) N/A N/A -2.2 μg/m3 (0) 41.0
 
March 30, 2020, 8 a.m. N/A N/A N/A N/A N/A N/A 53.0 ppb (41) N/A N/A -2.4 μg/m3 (0) 41.0
 
March 30, 2020, 7 a.m. N/A N/A N/A N/A N/A N/A 52.0 ppb (40) N/A N/A -2.8 μg/m3 (0) 40.0
 
March 30, 2020, 6 a.m. N/A N/A N/A N/A N/A N/A 52.0 ppb (40) N/A N/A -2.7 μg/m3 (0) 40.0
 
March 30, 2020, 5 a.m. N/A N/A N/A N/A N/A N/A 51.0 ppb (39) N/A N/A -2.7 μg/m3 (0) 39.0
 
March 30, 2020, 4 a.m. N/A N/A N/A N/A N/A N/A 52.0 ppb (40) N/A N/A -2.6 μg/m3 (0) 40.0
 
March 30, 2020, 3 a.m. N/A N/A N/A N/A N/A N/A 52.0 ppb (40) N/A N/A -2.5 μg/m3 (0) 40.0
 
March 30, 2020, 2 a.m. N/A N/A N/A N/A N/A N/A 51.0 ppb (39) N/A N/A -2.3 μg/m3 (0) 39.0
 
March 30, 2020, 1 a.m. N/A N/A N/A N/A N/A N/A 53.0 ppb (41) N/A N/A -2.0 μg/m3 (0) 41.0
 
March 30, 2020, midnight N/A N/A N/A N/A N/A N/A 53.0 ppb (41) N/A N/A -1.9 μg/m3 (0) 41.0
 
March 29, 2020, 11 p.m. N/A N/A N/A N/A N/A N/A 51.0 ppb (39) N/A N/A -1.8 μg/m3 (0) 39.0
 
March 29, 2020, 10 p.m. N/A N/A N/A N/A N/A N/A 51.0 ppb (39) N/A N/A -1.7 μg/m3 (0) 39.0
 
March 29, 2020, 9 p.m. N/A N/A N/A N/A N/A N/A 54.0 ppb (42) N/A N/A -1.7 μg/m3 (0) 42.0
 
March 29, 2020, 8 p.m. N/A N/A N/A N/A N/A N/A 54.0 ppb (42) N/A N/A -1.8 μg/m3 (0) 42.0
 
March 29, 2020, 7 p.m. N/A N/A N/A N/A N/A N/A 51.0 ppb (39) N/A N/A -2.0 μg/m3 (0) 39.0
 
March 29, 2020, 6 p.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (34) N/A N/A -2.2 μg/m3 (0) 34.0
 
March 29, 2020, 5 p.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (32) N/A N/A -2.3 μg/m3 (0) 32.0
 
March 29, 2020, 4 p.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (33) N/A N/A -2.6 μg/m3 (0) 33.0
 
March 29, 2020, 3 p.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (33) N/A N/A -3.1 μg/m3 (0) 33.0
 
March 29, 2020, 2 p.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (36) N/A N/A -3.2 μg/m3 (0) 36.0
 
March 29, 2020, 1 p.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (37) N/A N/A -3.2 μg/m3 (0) 37.0
 
March 29, 2020, noon N/A N/A N/A N/A N/A N/A 46.0 ppb (35) N/A N/A -3.3 μg/m3 (0) 35.0
 
March 29, 2020, 11 a.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (33) N/A N/A -3.2 μg/m3 (0) 33.0
 
March 29, 2020, 10 a.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (32) N/A N/A -3.2 μg/m3 (0) 32.0
 
March 29, 2020, 9 a.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (32) N/A N/A -3.0 μg/m3 (0) 32.0
 
March 29, 2020, 8 a.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (32) N/A N/A -2.9 μg/m3 (0) 32.0