ID: 1993

AQSQID: 000100125

Site Name: North Delta

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

Updated: May 11, 2021, 4:48 p.m.

Location: Delta (116th St), CC

Reporting: True, Located: True

Current AQI: 30.0

Delta (116th St) CC, CA: 49.15833, -122.90167

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
May 11, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 14.0 ppb (13) N/A N/A 7.1 μg/m3 (30) 30.0
 
May 11, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 13.0 ppb (13) N/A N/A 4.6 μg/m3 (20) 20.0
 
May 11, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 8.0 ppb (8) N/A N/A 4.0 μg/m3 (17) 17.0
 
May 11, 2021, noon N/A N/A N/A N/A N/A N/A 9.0 ppb (9) N/A N/A 3.3 μg/m3 (14) 14.0
 
May 11, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 8.0 ppb (8) N/A N/A 4.1 μg/m3 (18) 18.0
 
May 11, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 14.0 ppb (13) N/A N/A 3.5 μg/m3 (15) 15.0
 
May 11, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 11.0 ppb (11) N/A N/A 5.4 μg/m3 (23) 23.0
 
May 11, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 11.0 ppb (11) N/A N/A 4.8 μg/m3 (20) 20.0
 
May 11, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 17.0 ppb (16) N/A N/A 3.2 μg/m3 (14) 16.0
 
May 11, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (19) N/A N/A 4.1 μg/m3 (18) 19.0
 
May 11, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (22) N/A N/A 3.5 μg/m3 (15) 22.0
 
May 11, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 19.0 ppb (18) N/A N/A 2.8 μg/m3 (12) 18.0
 
May 11, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (25) N/A N/A 2.2 μg/m3 (10) 25.0
 
May 11, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (28) N/A N/A 2.4 μg/m3 (10) 28.0
 
May 11, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (30) N/A N/A 2.3 μg/m3 (10) 30.0
 
May 11, 2021, midnight N/A N/A N/A N/A N/A N/A 28.0 ppb (26) N/A N/A 2.2 μg/m3 (10) 26.0
 
May 10, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (24) N/A N/A 2.4 μg/m3 (10) 24.0
 
May 10, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (25) N/A N/A 2.9 μg/m3 (13) 25.0
 
May 10, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (26) N/A N/A 3.3 μg/m3 (14) 26.0
 
May 10, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (24) N/A N/A 4.8 μg/m3 (20) 24.0
 
May 10, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (23) N/A N/A 6.8 μg/m3 (29) 29.0
 
May 10, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (23) N/A N/A 6.1 μg/m3 (26) 26.0
 
May 10, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (21) N/A N/A 8.6 μg/m3 (36) 36.0
 
May 10, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (19) N/A N/A 6.5 μg/m3 (28) 28.0
 
May 10, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 15.0 ppb (14) N/A N/A 7.4 μg/m3 (31) 31.0
 
May 10, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 13.0 ppb (13) N/A N/A 7.7 μg/m3 (33) 33.0
 
May 10, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 11.0 ppb (11) N/A N/A 6.7 μg/m3 (28) 28.0
 
May 10, 2021, noon N/A N/A N/A N/A N/A N/A 11.0 ppb (11) N/A N/A 6.2 μg/m3 (26) 26.0
 
May 10, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 13.0 ppb (13) N/A N/A 6.0 μg/m3 (25) 25.0
 
May 10, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 17.0 ppb (16) N/A N/A 5.9 μg/m3 (25) 25.0
 
May 10, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 17.0 ppb (16) N/A N/A 6.6 μg/m3 (28) 28.0
 
May 10, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 18.0 ppb (17) N/A N/A 5.4 μg/m3 (23) 23.0
 
May 10, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 19.0 ppb (18) N/A N/A 5.1 μg/m3 (22) 22.0
 
May 10, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (27) N/A N/A 3.9 μg/m3 (17) 27.0
 
May 10, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (29) N/A N/A 3.9 μg/m3 (17) 29.0
 
May 10, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (30) N/A N/A 4.9 μg/m3 (21) 30.0
 
May 10, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (29) N/A N/A 3.3 μg/m3 (14) 29.0
 
May 10, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (30) N/A N/A 3.0 μg/m3 (13) 30.0
 
May 10, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (32) N/A N/A 2.9 μg/m3 (13) 32.0
 
May 10, 2021, midnight N/A N/A N/A N/A N/A N/A 36.0 ppb (34) N/A N/A 2.5 μg/m3 (11) 34.0
 
May 9, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (36) N/A N/A 3.7 μg/m3 (16) 36.0
 
May 9, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (36) N/A N/A 4.3 μg/m3 (18) 36.0
 
May 9, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (36) N/A N/A 5.6 μg/m3 (24) 36.0
 
May 9, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (29) N/A N/A 6.7 μg/m3 (28) 29.0
 
May 9, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (25) N/A N/A 6.1 μg/m3 (26) 26.0
 
May 9, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (25) N/A N/A 6.1 μg/m3 (26) 26.0
 
May 9, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (28) N/A N/A 5.2 μg/m3 (22) 28.0
 
May 9, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (27) N/A N/A 5.8 μg/m3 (25) 27.0
 
May 9, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (23) N/A N/A 4.3 μg/m3 (18) 23.0
 
May 9, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 16.0 ppb (15) N/A N/A 4.4 μg/m3 (19) 19.0
 
May 9, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 16.0 ppb (15) N/A N/A 3.6 μg/m3 (16) 16.0
 
May 9, 2021, noon N/A N/A N/A N/A N/A N/A 19.0 ppb (18) N/A N/A 3.9 μg/m3 (17) 18.0
 
May 9, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (19) N/A N/A 4.3 μg/m3 (18) 19.0
 
May 9, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (20) N/A N/A 4.2 μg/m3 (18) 20.0
 
May 9, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 19.0 ppb (18) N/A N/A 4.8 μg/m3 (20) 20.0
 
May 9, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 17.0 ppb (16) N/A N/A 5.2 μg/m3 (22) 22.0
 
May 9, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 18.0 ppb (17) N/A N/A 5.9 μg/m3 (25) 25.0
 
May 9, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (29) N/A N/A 4.3 μg/m3 (18) 29.0
 
May 9, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (32) N/A N/A 3.7 μg/m3 (16) 32.0
 
May 9, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (31) N/A N/A 4.6 μg/m3 (20) 31.0
 
May 9, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (33) N/A N/A 7.1 μg/m3 (30) 33.0
 
May 9, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (36) N/A N/A 3.8 μg/m3 (16) 36.0
 
May 9, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (38) N/A N/A 3.8 μg/m3 (16) 38.0
 
May 9, 2021, midnight N/A N/A N/A N/A N/A N/A 41.0 ppb (38) N/A N/A 3.3 μg/m3 (14) 38.0
 
May 8, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (40) N/A N/A 3.3 μg/m3 (14) 40.0
 
May 8, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (41) N/A N/A 3.4 μg/m3 (15) 41.0
 
May 8, 2021, 9 p.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
 
May 8, 2021, 8 p.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
 
May 8, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (40) N/A N/A 2.8 μg/m3 (12) 40.0
 
May 8, 2021, 6 p.m. 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
 
May 8, 2021, 5 p.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
 
May 8, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (33) N/A N/A 3.1 μg/m3 (13) 33.0
 
May 8, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (31) N/A N/A 3.2 μg/m3 (14) 31.0
 
May 8, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (25) N/A N/A 4.1 μg/m3 (18) 25.0
 
May 8, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 19.0 ppb (18) N/A N/A 4.2 μg/m3 (18) 18.0
 
May 8, 2021, noon N/A N/A N/A N/A N/A N/A 26.0 ppb (25) N/A N/A 3.2 μg/m3 (14) 25.0
 
May 8, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (28) N/A N/A 3.9 μg/m3 (17) 28.0
 
May 8, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (30) N/A N/A 3.9 μg/m3 (17) 30.0
 
May 8, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (28) N/A N/A 4.5 μg/m3 (19) 28.0
 
May 8, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (27) N/A N/A 5.7 μg/m3 (24) 27.0
 
May 8, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (25) N/A N/A 5.4 μg/m3 (23) 25.0
 
May 8, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (20) N/A N/A 5.7 μg/m3 (24) 24.0
 
May 8, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (25) N/A N/A 5.6 μg/m3 (24) 25.0
 
May 8, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (25) N/A N/A 2.8 μg/m3 (12) 25.0
 
May 8, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (28) N/A N/A 2.2 μg/m3 (10) 28.0
 
May 8, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (33) N/A N/A 1.6 μg/m3 (7) 33.0
 
May 8, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (36) N/A N/A 1.7 μg/m3 (8) 36.0
 
May 8, 2021, midnight N/A N/A N/A N/A N/A N/A 38.0 ppb (36) N/A N/A 2.0 μg/m3 (9) 36.0
 
May 7, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (37) N/A N/A 1.8 μg/m3 (8) 37.0
 
May 7, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (38) N/A N/A 2.0 μg/m3 (9) 38.0
 
May 7, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (36) N/A N/A 2.4 μg/m3 (10) 36.0
 
May 7, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (37) N/A N/A 1.8 μg/m3 (8) 37.0
 
May 7, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (30) N/A N/A 3.1 μg/m3 (13) 30.0
 
May 7, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (30) N/A N/A 3.4 μg/m3 (15) 30.0
 
May 7, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (35) N/A N/A 2.8 μg/m3 (12) 35.0
 
May 7, 2021, 4 p.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
 
May 7, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (33) N/A N/A 2.9 μg/m3 (13) 33.0
 
May 7, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (29) N/A N/A 3.6 μg/m3 (16) 29.0
 
May 7, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (27) N/A N/A 4.2 μg/m3 (18) 27.0
 
May 7, 2021, noon N/A N/A N/A N/A N/A N/A 34.0 ppb (32) N/A N/A 4.7 μg/m3 (20) 32.0
 
May 7, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (34) N/A N/A 4.6 μg/m3 (20) 34.0
 
May 7, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (35) N/A N/A 5.2 μg/m3 (22) 35.0
 
May 7, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (34) N/A N/A 5.1 μg/m3 (22) 34.0
 
May 7, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (34) N/A N/A 8.4 μg/m3 (36) 36.0
 
May 7, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (33) N/A N/A 9.2 μg/m3 (39) 39.0
 
May 7, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (33) N/A N/A 3.5 μg/m3 (15) 33.0
 
May 7, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (32) N/A N/A 1.1 μg/m3 (5) 32.0
 
May 7, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (32) N/A N/A 1.0 μg/m3 (5) 32.0
 
May 7, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (35) N/A N/A 0.9 μg/m3 (4) 35.0
 
May 7, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (28) N/A N/A 1.5 μg/m3 (7) 28.0
 
May 7, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (22) N/A N/A 3.8 μg/m3 (16) 22.0
 
May 7, 2021, midnight N/A N/A N/A N/A N/A N/A 17.0 ppb (16) N/A N/A 3.9 μg/m3 (17) 17.0
 
May 6, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (23) N/A N/A 4.7 μg/m3 (20) 23.0
 
May 6, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (34) N/A N/A N/A 34.0
 
May 6, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (36) N/A N/A 4.5 μg/m3 (19) 36.0
 
May 6, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (32) N/A N/A 4.7 μg/m3 (20) 32.0
 
May 6, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (24) N/A N/A 7.1 μg/m3 (30) 30.0
 
May 6, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (22) N/A N/A 6.8 μg/m3 (29) 29.0
 
May 6, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (23) N/A N/A 6.7 μg/m3 (28) 28.0
 
May 6, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (19) N/A N/A 7.2 μg/m3 (31) 31.0
 
May 6, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 19.0 ppb (18) N/A N/A 7.4 μg/m3 (31) 31.0
 
May 6, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 18.0 ppb (17) N/A N/A 6.5 μg/m3 (28) 28.0
 
May 6, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (22) N/A N/A 6.3 μg/m3 (27) 27.0
 
May 6, 2021, noon N/A N/A N/A N/A N/A N/A 27.0 ppb (25) N/A N/A 5.5 μg/m3 (23) 25.0
 
May 6, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (33) N/A N/A 5.3 μg/m3 (23) 33.0
 
May 6, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (36) N/A N/A 5.1 μg/m3 (22) 36.0
 
May 6, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (38) N/A N/A 4.9 μg/m3 (21) 38.0
 
May 6, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (40) N/A N/A 4.8 μg/m3 (20) 40.0
 
May 6, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (41) N/A N/A 4.3 μg/m3 (18) 41.0
 
May 6, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (38) N/A N/A 4.7 μg/m3 (20) 38.0
 
May 6, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (37) N/A N/A 4.8 μg/m3 (20) 37.0
 
May 6, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 17.0 ppb (16) N/A N/A 5.8 μg/m3 (25) 25.0
 
May 6, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 6.0 ppb (6) N/A N/A 4.9 μg/m3 (21) 21.0
 
May 6, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 7.0 ppb (7) N/A N/A 6.1 μg/m3 (26) 26.0
 
May 6, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 16.0 ppb (15) N/A N/A 4.8 μg/m3 (20) 20.0
 
May 6, 2021, midnight N/A N/A N/A N/A N/A N/A 20.0 ppb (19) N/A N/A 4.2 μg/m3 (18) 19.0
 
May 5, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 19.0 ppb (18) N/A N/A 5.6 μg/m3 (24) 24.0
 
May 5, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 18.0 ppb (17) N/A N/A 5.5 μg/m3 (23) 23.0
 
May 5, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 15.0 ppb (14) N/A N/A 6.4 μg/m3 (27) 27.0
 
May 5, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 17.0 ppb (16) N/A N/A 5.7 μg/m3 (24) 24.0
 
May 5, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 17.0 ppb (16) N/A N/A 7.4 μg/m3 (31) 31.0
 
May 5, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 13.0 ppb (13) N/A N/A 10.5 μg/m3 (44) 44.0
 
May 5, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 11.0 ppb (11) N/A N/A 9.7 μg/m3 (41) 41.0
 
May 5, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 15.0 ppb (14) N/A N/A 4.4 μg/m3 (19) 19.0
 
May 5, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 11.0 ppb (11) N/A N/A 3.9 μg/m3 (17) 17.0
 
May 5, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 4.0 ppb (4) N/A N/A 4.2 μg/m3 (18) 18.0
 
May 5, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A 4.2 μg/m3 (18) 18.0
 
May 5, 2021, noon N/A N/A N/A N/A N/A N/A 5.0 ppb (5) N/A N/A 3.2 μg/m3 (14) 14.0
 
May 5, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 14.0 ppb (13) N/A N/A 2.8 μg/m3 (12) 13.0
 
May 5, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 16.0 ppb (15) N/A N/A 2.5 μg/m3 (11) 15.0
 
May 5, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 16.0 ppb (15) N/A N/A 2.9 μg/m3 (13) 15.0
 
May 5, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 15.0 ppb (14) N/A N/A 3.2 μg/m3 (14) 14.0
 
May 5, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 16.0 ppb (15) N/A N/A 4.2 μg/m3 (18) 18.0
 
May 5, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (29) N/A N/A 4.5 μg/m3 (19) 29.0
 
May 5, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (25) N/A N/A 4.2 μg/m3 (18) 25.0
 
May 5, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (29) N/A N/A 4.1 μg/m3 (18) 29.0
 
May 5, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (30) N/A N/A 4.1 μg/m3 (18) 30.0
 
May 5, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (32) N/A N/A 3.0 μg/m3 (13) 32.0
 
May 5, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (34) N/A N/A 2.4 μg/m3 (10) 34.0
 
May 5, 2021, midnight N/A N/A N/A N/A N/A N/A 36.0 ppb (34) N/A N/A 2.4 μg/m3 (10) 34.0
 
May 4, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (33) N/A N/A 2.4 μg/m3 (10) 33.0
 
May 4, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (31) N/A N/A 1.9 μg/m3 (8) 31.0
 
May 4, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (33) N/A N/A 1.3 μg/m3 (6) 33.0
 
May 4, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (28) N/A N/A 1.6 μg/m3 (7) 28.0
 
May 4, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (24) N/A N/A 2.0 μg/m3 (9) 24.0
 
May 4, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (21) N/A N/A 1.6 μg/m3 (7) 21.0
 
May 4, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 16.0 ppb (15) N/A N/A 2.7 μg/m3 (12) 15.0
 
May 4, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 5.0 ppb (5) N/A N/A 4.3 μg/m3 (18) 18.0