ID: 7881

AQSQID: 840040059999

Site Name: Grand Canyon Ozone Bench

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

Updated: June 18, 2021, 3:50 a.m.

Location: Grand Cyn (Mather Point Amphitheater), AZ

Reporting: True, Located: True

Current AQI: 48.0

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
June 18, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 51.0 ppb (48) N/A N/A 11.1 μg/m3 (47) 48.0
 
June 18, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 51.0 ppb (48) N/A N/A 11.4 μg/m3 (48) 48.0
 
June 18, 2021, midnight N/A N/A N/A N/A N/A N/A 50.0 ppb (47) N/A N/A 12.4 μg/m3 (52) 52.0
 
June 17, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (46) N/A N/A 13.4 μg/m3 (54) 54.0
 
June 17, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (46) N/A N/A 12.7 μg/m3 (53) 53.0
 
June 17, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (46) N/A N/A 12.7 μg/m3 (53) 53.0
 
June 17, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (45) N/A N/A 12.8 μg/m3 (53) 53.0
 
June 17, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (46) N/A N/A 12.9 μg/m3 (53) 53.0
 
June 17, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (45) N/A N/A 12.6 μg/m3 (53) 53.0
 
June 17, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (44) N/A N/A 12.1 μg/m3 (51) 51.0
 
June 17, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (43) N/A N/A 11.7 μg/m3 (49) 49.0
 
June 17, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (45) N/A N/A 11.4 μg/m3 (48) 48.0
 
June 17, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (44) N/A N/A 10.6 μg/m3 (45) 45.0
 
June 17, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (43) N/A N/A 10.3 μg/m3 (43) 43.0
 
June 17, 2021, noon N/A N/A N/A N/A N/A N/A 46.0 ppb (43) N/A N/A 10.6 μg/m3 (45) 45.0
 
June 17, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (45) N/A N/A 11.1 μg/m3 (47) 47.0
 
June 17, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 51.0 ppb (48) N/A N/A 11.8 μg/m3 (50) 50.0
 
June 17, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 52.0 ppb (49) N/A N/A 11.9 μg/m3 (50) 50.0
 
June 17, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 51.0 ppb (48) N/A N/A 11.6 μg/m3 (49) 49.0
 
June 17, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (46) N/A N/A 11.3 μg/m3 (48) 48.0
 
June 17, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 50.0 ppb (47) N/A N/A 11.5 μg/m3 (48) 48.0
 
June 17, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 50.0 ppb (47) N/A N/A 11.1 μg/m3 (47) 47.0
 
June 17, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 50.0 ppb (47) N/A N/A 11.0 μg/m3 (46) 47.0
 
June 17, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (46) N/A N/A 11.1 μg/m3 (47) 47.0
 
June 17, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (46) N/A N/A 11.3 μg/m3 (48) 48.0
 
June 17, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 52.0 ppb (49) N/A N/A 12.0 μg/m3 (50) 50.0
 
June 17, 2021, midnight N/A N/A N/A N/A N/A N/A 49.0 ppb (46) N/A N/A 10.3 μg/m3 (43) 46.0
 
June 16, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 50.0 ppb (47) N/A N/A 11.5 μg/m3 (48) 48.0
 
June 16, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 52.0 ppb (49) N/A N/A 12.1 μg/m3 (51) 51.0
 
June 16, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 53.0 ppb (50) N/A N/A 14.3 μg/m3 (56) 56.0
 
June 16, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 54.0 ppb (50) N/A N/A 14.1 μg/m3 (56) 56.0
 
June 16, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 53.0 ppb (50) N/A N/A 13.7 μg/m3 (55) 55.0
 
June 16, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 54.0 ppb (50) N/A N/A 15.0 μg/m3 (58) 58.0
 
June 16, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 53.0 ppb (50) N/A N/A 15.0 μg/m3 (58) 58.0
 
June 16, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 52.0 ppb (49) N/A N/A 14.7 μg/m3 (57) 57.0
 
June 16, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 51.0 ppb (48) N/A N/A 14.6 μg/m3 (57) 57.0
 
June 16, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 54.0 ppb (50) N/A N/A 16.1 μg/m3 (60) 60.0
 
June 16, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 50.0 ppb (47) N/A N/A 12.8 μg/m3 (53) 53.0
 
June 16, 2021, noon N/A N/A N/A N/A N/A N/A 48.0 ppb (45) N/A N/A 11.8 μg/m3 (50) 50.0
 
June 16, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (44) N/A N/A 11.6 μg/m3 (49) 49.0
 
June 16, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (44) N/A N/A 12.5 μg/m3 (52) 52.0
 
June 16, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 50.0 ppb (47) N/A N/A 13.4 μg/m3 (54) 54.0
 
June 16, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 51.0 ppb (48) N/A N/A 13.8 μg/m3 (55) 55.0
 
June 16, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 50.0 ppb (47) N/A N/A 14.3 μg/m3 (56) 56.0
 
June 16, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (46) N/A N/A 14.2 μg/m3 (56) 56.0
 
June 16, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (46) N/A N/A 14.4 μg/m3 (56) 56.0
 
June 16, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (46) N/A N/A 14.1 μg/m3 (56) 56.0
 
June 16, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (43) N/A N/A 13.5 μg/m3 (54) 54.0
 
June 16, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (42) N/A N/A 13.5 μg/m3 (54) 54.0
 
June 16, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (44) N/A N/A 12.6 μg/m3 (53) 53.0
 
June 16, 2021, midnight N/A N/A N/A N/A N/A N/A 46.0 ppb (43) N/A N/A 10.9 μg/m3 (46) 46.0
 
June 15, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (41) N/A N/A 10.0 μg/m3 (42) 42.0
 
June 15, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (40) N/A N/A 9.6 μg/m3 (40) 40.0
 
June 15, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (43) N/A N/A 9.3 μg/m3 (39) 43.0
 
June 15, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (42) N/A N/A 8.4 μg/m3 (36) 42.0
 
June 15, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (40) N/A N/A 7.7 μg/m3 (33) 40.0
 
June 15, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (39) N/A N/A 7.4 μg/m3 (31) 39.0
 
June 15, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (38) N/A N/A 7.2 μg/m3 (31) 38.0
 
June 15, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (40) N/A N/A 6.8 μg/m3 (29) 40.0
 
June 15, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (41) N/A N/A 6.5 μg/m3 (28) 41.0
 
June 15, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (42) N/A N/A 6.1 μg/m3 (26) 42.0
 
June 15, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (43) N/A N/A 5.9 μg/m3 (25) 43.0
 
June 15, 2021, noon N/A N/A N/A N/A N/A N/A 45.0 ppb (42) N/A N/A 5.7 μg/m3 (24) 42.0
 
June 15, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (40) N/A N/A 5.4 μg/m3 (23) 40.0
 
June 15, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (41) N/A N/A 5.4 μg/m3 (23) 41.0
 
June 15, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (41) N/A N/A 5.4 μg/m3 (23) 41.0
 
June 15, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (40) N/A N/A 5.4 μg/m3 (23) 40.0
 
June 15, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (40) N/A N/A 5.5 μg/m3 (23) 40.0
 
June 15, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (40) N/A N/A 5.9 μg/m3 (25) 40.0
 
June 15, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (40) N/A N/A 6.9 μg/m3 (29) 40.0
 
June 15, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (41) N/A N/A 7.4 μg/m3 (31) 41.0
 
June 15, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (42) N/A N/A 7.9 μg/m3 (33) 42.0
 
June 15, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (42) N/A N/A 8.0 μg/m3 (34) 42.0
 
June 15, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (41) N/A N/A 7.6 μg/m3 (32) 41.0
 
June 15, 2021, midnight N/A N/A N/A N/A N/A N/A 42.0 ppb (39) N/A N/A 7.0 μg/m3 (30) 39.0
 
June 14, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (38) N/A N/A 6.2 μg/m3 (26) 38.0
 
June 14, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (38) N/A N/A 5.7 μg/m3 (24) 38.0
 
June 14, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (40) N/A N/A 5.6 μg/m3 (24) 40.0
 
June 14, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (39) N/A N/A 5.3 μg/m3 (23) 39.0
 
June 14, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (37) N/A N/A 3.6 μg/m3 (16) 37.0
 
June 14, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (35) N/A N/A 3.0 μg/m3 (13) 35.0
 
June 14, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (34) N/A N/A 2.9 μg/m3 (13) 34.0
 
June 14, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (34) N/A N/A 2.6 μg/m3 (11) 34.0
 
June 14, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (37) N/A N/A 2.0 μg/m3 (9) 37.0
 
June 14, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (35) N/A N/A 1.9 μg/m3 (8) 35.0
 
June 14, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (37) N/A N/A 1.9 μg/m3 (8) 37.0
 
June 14, 2021, noon N/A N/A N/A N/A N/A N/A 42.0 ppb (39) N/A N/A 1.9 μg/m3 (8) 39.0
 
June 14, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (40) N/A N/A 2.0 μg/m3 (9) 40.0
 
June 14, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (40) N/A N/A 2.1 μg/m3 (9) 40.0
 
June 14, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (39) N/A N/A 2.0 μg/m3 (9) 39.0
 
June 14, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (38) N/A N/A 1.9 μg/m3 (8) 38.0
 
June 14, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (35) N/A N/A 1.9 μg/m3 (8) 35.0
 
June 14, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (35) N/A N/A 2.1 μg/m3 (9) 35.0
 
June 14, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (37) N/A N/A 2.5 μg/m3 (11) 37.0
 
June 14, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (37) N/A N/A 2.7 μg/m3 (12) 37.0
 
June 14, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (37) N/A N/A 3.5 μg/m3 (15) 37.0
 
June 14, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (39) N/A N/A 3.6 μg/m3 (16) 39.0
 
June 14, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (40) N/A N/A 3.5 μg/m3 (15) 40.0
 
June 14, 2021, midnight N/A N/A N/A N/A N/A N/A 45.0 ppb (42) N/A N/A 3.5 μg/m3 (15) 42.0
 
June 13, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (43) N/A N/A 3.9 μg/m3 (17) 43.0
 
June 13, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 50.0 ppb (47) N/A N/A 4.1 μg/m3 (18) 47.0
 
June 13, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 50.0 ppb (47) N/A N/A 5.3 μg/m3 (23) 47.0
 
June 13, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 50.0 ppb (47) N/A N/A 4.9 μg/m3 (21) 47.0
 
June 13, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 53.0 ppb (50) N/A N/A 4.8 μg/m3 (20) 50.0
 
June 13, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 52.0 ppb (49) N/A N/A 4.4 μg/m3 (19) 49.0
 
June 13, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 50.0 ppb (47) N/A N/A 3.4 μg/m3 (15) 47.0
 
June 13, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (42) N/A N/A 2.5 μg/m3 (11) 42.0
 
June 13, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (40) N/A N/A 2.1 μg/m3 (9) 40.0
 
June 13, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (39) N/A N/A 1.6 μg/m3 (7) 39.0
 
June 13, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (40) N/A N/A 1.2 μg/m3 (5) 40.0
 
June 13, 2021, noon N/A N/A N/A N/A N/A N/A 44.0 ppb (41) N/A N/A 1.2 μg/m3 (5) 41.0
 
June 13, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (40) N/A N/A 1.2 μg/m3 (5) 40.0
 
June 13, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (40) N/A N/A 1.2 μg/m3 (5) 40.0
 
June 13, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (39) N/A N/A 1.4 μg/m3 (6) 39.0
 
June 13, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (38) N/A N/A 1.4 μg/m3 (6) 38.0
 
June 13, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (37) N/A N/A 1.5 μg/m3 (7) 37.0
 
June 13, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (37) N/A N/A 1.6 μg/m3 (7) 37.0
 
June 13, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (36) N/A N/A 1.8 μg/m3 (8) 36.0
 
June 13, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (35) N/A N/A 2.1 μg/m3 (9) 35.0
 
June 13, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (38) N/A N/A 2.7 μg/m3 (12) 38.0
 
June 13, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (38) N/A N/A 3.1 μg/m3 (13) 38.0
 
June 13, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (38) N/A N/A 3.0 μg/m3 (13) 38.0
 
June 13, 2021, midnight N/A N/A N/A N/A N/A N/A 40.0 ppb (38) N/A N/A 2.9 μg/m3 (13) 38.0
 
June 12, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (38) N/A N/A 2.8 μg/m3 (12) 38.0
 
June 12, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (38) N/A N/A 2.7 μg/m3 (12) 38.0
 
June 12, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (38) N/A N/A 2.6 μg/m3 (11) 38.0
 
June 12, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (38) N/A N/A 2.7 μg/m3 (12) 38.0
 
June 12, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (39) N/A N/A 2.7 μg/m3 (12) 39.0
 
June 12, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (43) N/A N/A 2.8 μg/m3 (12) 43.0
 
June 12, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (44) N/A N/A 2.8 μg/m3 (12) 44.0
 
June 12, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (45) N/A N/A 2.6 μg/m3 (11) 45.0
 
June 12, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (46) N/A N/A 2.3 μg/m3 (10) 46.0
 
June 12, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 51.0 ppb (48) N/A N/A 1.7 μg/m3 (8) 48.0
 
June 12, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 55.0 ppb (51) N/A N/A 1.5 μg/m3 (7) 51.0
 
June 12, 2021, noon N/A N/A N/A N/A N/A N/A 56.0 ppb (55) N/A N/A 1.4 μg/m3 (6) 55.0
 
June 12, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 56.0 ppb (55) N/A N/A 1.2 μg/m3 (5) 55.0
 
June 12, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 57.0 ppb (58) N/A N/A 1.3 μg/m3 (6) 58.0
 
June 12, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 57.0 ppb (58) N/A N/A 1.4 μg/m3 (6) 58.0
 
June 12, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 55.0 ppb (51) N/A N/A 1.5 μg/m3 (7) 51.0
 
June 12, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 50.0 ppb (47) N/A N/A 1.5 μg/m3 (7) 47.0
 
June 12, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (41) N/A N/A 1.6 μg/m3 (7) 41.0
 
June 12, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (38) N/A N/A 1.8 μg/m3 (8) 38.0
 
June 12, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (42) N/A N/A 2.2 μg/m3 (10) 42.0
 
June 12, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (43) N/A N/A 2.9 μg/m3 (13) 43.0
 
June 12, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (44) N/A N/A 3.1 μg/m3 (13) 44.0
 
June 12, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (42) N/A N/A 3.2 μg/m3 (14) 42.0
 
June 12, 2021, midnight N/A N/A N/A N/A N/A N/A 47.0 ppb (44) N/A N/A 3.2 μg/m3 (14) 44.0
 
June 11, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (40) N/A N/A 2.9 μg/m3 (13) 40.0
 
June 11, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (43) N/A N/A 2.9 μg/m3 (13) 43.0
 
June 11, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (45) N/A N/A 2.8 μg/m3 (12) 45.0
 
June 11, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 54.0 ppb (50) N/A N/A 3.0 μg/m3 (13) 50.0
 
June 11, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 57.0 ppb (58) N/A N/A 2.9 μg/m3 (13) 58.0
 
June 11, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 60.0 ppb (68) N/A N/A 2.8 μg/m3 (12) 68.0
 
June 11, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 60.0 ppb (68) N/A N/A 2.6 μg/m3 (11) 68.0
 
June 11, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 60.0 ppb (68) N/A N/A 2.4 μg/m3 (10) 68.0
 
June 11, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 62.0 ppb (74) N/A N/A 2.1 μg/m3 (9) 74.0
 
June 11, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 65.0 ppb (84) N/A N/A 1.6 μg/m3 (7) 84.0
 
June 11, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 70.0 ppb (100) N/A N/A 1.2 μg/m3 (5) 100.0
 
June 11, 2021, noon N/A N/A N/A N/A N/A N/A 71.0 ppb (101) N/A N/A 1.0 μg/m3 (5) 101.0
 
June 11, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 68.0 ppb (94) N/A N/A 1.1 μg/m3 (5) 94.0
 
June 11, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 64.0 ppb (81) N/A N/A 1.2 μg/m3 (5) 81.0
 
June 11, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 60.0 ppb (68) N/A N/A 1.3 μg/m3 (6) 68.0
 
June 11, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 61.0 ppb (71) N/A N/A 1.5 μg/m3 (7) 71.0
 
June 11, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 62.0 ppb (74) N/A N/A 1.7 μg/m3 (8) 74.0
 
June 11, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 62.0 ppb (74) N/A N/A 3.7 μg/m3 (16) 74.0
 
June 11, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 63.0 ppb (78) N/A N/A 3.8 μg/m3 (16) 78.0
 
June 11, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 63.0 ppb (78) N/A N/A 3.1 μg/m3 (13) 78.0
 
June 11, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 63.0 ppb (78) N/A N/A 3.8 μg/m3 (16) 78.0