ID: 883

AQSQID: 511611004

Site Name: East Vinton Elementary School

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

Updated: April 18, 2021, 5:43 a.m.

Location: Roanoke (Gates Lane), VA

Reporting: True, Located: True

Current AQI: 36.0

Roanoke (Gates Lane) VA, US: 37.285599, -79.884201

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
April 18, 2021, 4 a.m. N/A N/A N/A 4.0 ppb (4) N/A 0.0 ppb (0) 38.0 ppb (36) 0.1 ppb (2) N/A 7.1 μg/m3 (30) 36.0
 
April 18, 2021, 3 a.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 38.0 ppb (36) 0.1 ppb (2) N/A 5.7 μg/m3 (24) 36.0
 
April 18, 2021, 2 a.m. N/A N/A N/A 6.0 ppb (6) N/A 1.0 ppb (2) 34.0 ppb (32) 0.2 ppb (3) N/A 6.8 μg/m3 (29) 32.0
 
April 18, 2021, 1 a.m. N/A N/A N/A 2.0 ppb (2) N/A 1.0 ppb (2) 41.0 ppb (38) 0.1 ppb (2) N/A 4.4 μg/m3 (19) 38.0
 
April 18, 2021, midnight N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 43.0 ppb (40) 0.1 ppb (2) N/A 4.3 μg/m3 (18) 40.0
 
April 17, 2021, 11 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 43.0 ppb (40) 0.1 ppb (2) N/A 4.1 μg/m3 (18) 40.0
 
April 17, 2021, 10 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 44.0 ppb (41) 0.1 ppb (2) N/A 4.1 μg/m3 (18) 41.0
 
April 17, 2021, 9 p.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 44.0 ppb (41) 0.1 ppb (2) N/A 4.1 μg/m3 (18) 41.0
 
April 17, 2021, 8 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 47.0 ppb (44) 0.1 ppb (2) N/A 4.0 μg/m3 (17) 44.0
 
April 17, 2021, 7 p.m. N/A N/A N/A 1.0 ppb (1) N/A 1.0 ppb (2) 47.0 ppb (44) 0.1 ppb (2) N/A 4.4 μg/m3 (19) 44.0
 
April 17, 2021, 6 p.m. N/A N/A N/A 2.0 ppb (2) N/A 1.0 ppb (2) 47.0 ppb (44) 0.1 ppb (2) N/A 4.5 μg/m3 (19) 44.0
 
April 17, 2021, 5 p.m. N/A N/A N/A 2.0 ppb (2) N/A 1.0 ppb (2) 47.0 ppb (44) 0.1 ppb (2) N/A 4.7 μg/m3 (20) 44.0
 
April 17, 2021, 4 p.m. N/A N/A N/A 2.0 ppb (2) N/A 1.0 ppb (2) 46.0 ppb (43) 0.2 ppb (3) N/A 5.2 μg/m3 (22) 43.0
 
April 17, 2021, 3 p.m. N/A N/A N/A 3.0 ppb (3) N/A 1.0 ppb (2) 42.0 ppb (39) 0.2 ppb (3) N/A 5.4 μg/m3 (23) 39.0
 
April 17, 2021, 2 p.m. N/A N/A N/A 4.0 ppb (4) N/A 1.0 ppb (2) 38.0 ppb (36) 0.2 ppb (3) N/A 5.2 μg/m3 (22) 36.0
 
April 17, 2021, 1 p.m. N/A N/A N/A 8.0 ppb (8) N/A 1.0 ppb (2) 26.0 ppb (25) 0.2 ppb (3) N/A 5.5 μg/m3 (23) 25.0
 
April 17, 2021, noon N/A N/A N/A 6.0 ppb (6) N/A 0.0 ppb (0) 25.0 ppb (24) 0.2 ppb (3) N/A 4.6 μg/m3 (20) 24.0
 
April 17, 2021, 11 a.m. N/A N/A N/A 9.0 ppb (9) N/A 0.0 ppb (0) 17.0 ppb (16) 0.2 ppb (3) N/A 4.8 μg/m3 (20) 20.0
 
April 17, 2021, 10 a.m. N/A N/A N/A 9.0 ppb (9) N/A 0.0 ppb (0) 21.0 ppb (20) 0.2 ppb (3) N/A 4.8 μg/m3 (20) 20.0
 
April 17, 2021, 9 a.m. N/A N/A N/A 9.0 ppb (9) N/A 0.0 ppb (0) 21.0 ppb (20) 0.2 ppb (3) N/A 4.6 μg/m3 (20) 20.0
 
April 17, 2021, 8 a.m. N/A N/A N/A 8.0 ppb (8) N/A 0.0 ppb (0) 22.0 ppb (21) 0.1 ppb (2) N/A 4.9 μg/m3 (21) 21.0
 
April 17, 2021, 7 a.m. N/A N/A N/A 6.0 ppb (6) N/A 0.0 ppb (0) 24.0 ppb (23) 0.1 ppb (2) N/A 4.6 μg/m3 (20) 23.0
 
April 17, 2021, 6 a.m. N/A N/A N/A 5.0 ppb (5) N/A 0.0 ppb (0) 30.0 ppb (28) 0.1 ppb (2) N/A 4.2 μg/m3 (18) 28.0
 
April 17, 2021, 5 a.m. N/A N/A N/A 4.0 ppb (4) N/A 1.0 ppb (2) 36.0 ppb (34) 0.1 ppb (2) N/A 3.8 μg/m3 (16) 34.0
 
April 17, 2021, 4 a.m. N/A N/A N/A 3.0 ppb (3) N/A 1.0 ppb (2) 37.0 ppb (35) 0.1 ppb (2) N/A 3.4 μg/m3 (15) 35.0
 
April 17, 2021, 3 a.m. N/A N/A N/A 3.0 ppb (3) N/A 1.0 ppb (2) 38.0 ppb (36) 0.1 ppb (2) N/A 3.3 μg/m3 (14) 36.0
 
April 17, 2021, 2 a.m. N/A N/A N/A 2.0 ppb (2) N/A 1.0 ppb (2) 40.0 ppb (38) 0.1 ppb (2) N/A 3.1 μg/m3 (13) 38.0
 
April 17, 2021, 1 a.m. N/A N/A N/A 2.0 ppb (2) N/A 1.0 ppb (2) 40.0 ppb (38) 0.1 ppb (2) N/A 3.0 μg/m3 (13) 38.0
 
April 17, 2021, midnight N/A N/A N/A 2.0 ppb (2) N/A 1.0 ppb (2) 43.0 ppb (40) 0.1 ppb (2) N/A 3.3 μg/m3 (14) 40.0
 
April 16, 2021, 11 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 46.0 ppb (43) 0.1 ppb (2) N/A 3.1 μg/m3 (13) 43.0
 
April 16, 2021, 10 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 47.0 ppb (44) 0.1 ppb (2) N/A 3.1 μg/m3 (13) 44.0
 
April 16, 2021, 9 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 47.0 ppb (44) 0.1 ppb (2) N/A 2.9 μg/m3 (13) 44.0
 
April 16, 2021, 8 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 46.0 ppb (43) 0.1 ppb (2) N/A 3.8 μg/m3 (16) 43.0
 
April 16, 2021, 7 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 45.0 ppb (42) 0.1 ppb (2) N/A 3.2 μg/m3 (14) 42.0
 
April 16, 2021, 6 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 44.0 ppb (41) 0.1 ppb (2) N/A 3.4 μg/m3 (15) 41.0
 
April 16, 2021, 5 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 42.0 ppb (39) 0.1 ppb (2) N/A 3.9 μg/m3 (17) 39.0
 
April 16, 2021, 4 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 40.0 ppb (38) 0.1 ppb (2) N/A 4.3 μg/m3 (18) 38.0
 
April 16, 2021, 3 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 40.0 ppb (38) 0.1 ppb (2) N/A 4.3 μg/m3 (18) 38.0
 
April 16, 2021, 2 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 38.0 ppb (36) 0.1 ppb (2) N/A 4.2 μg/m3 (18) 36.0
 
April 16, 2021, 1 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 35.0 ppb (33) 0.1 ppb (2) N/A 4.3 μg/m3 (18) 33.0
 
April 16, 2021, noon N/A N/A N/A 4.0 ppb (4) N/A 0.0 ppb (0) 29.0 ppb (27) 0.2 ppb (3) N/A 4.9 μg/m3 (21) 27.0
 
April 16, 2021, 11 a.m. N/A N/A N/A 6.0 ppb (6) N/A 0.0 ppb (0) 24.0 ppb (23) 0.2 ppb (3) N/A 5.1 μg/m3 (22) 23.0
 
April 16, 2021, 10 a.m. N/A N/A N/A 4.0 ppb (4) N/A 0.0 ppb (0) 27.0 ppb (25) 0.1 ppb (2) N/A 4.9 μg/m3 (21) 25.0
 
April 16, 2021, 9 a.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) N/A 0.1 ppb (2) N/A 4.9 μg/m3 (21) 21.0
 
April 16, 2021, 8 a.m. N/A N/A N/A 3.0 ppb (3) N/A N/A 29.0 ppb (27) 0.1 ppb (2) N/A 5.2 μg/m3 (22) 27.0
 
April 16, 2021, 7 a.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 30.0 ppb (28) N/A N/A 5.3 μg/m3 (23) 28.0
 
April 16, 2021, 6 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 31.0 ppb (29) 0.1 ppb (2) N/A 4.7 μg/m3 (20) 29.0
 
April 16, 2021, 5 a.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 32.0 ppb (30) 0.1 ppb (2) N/A 4.3 μg/m3 (18) 30.0
 
April 16, 2021, 4 a.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 34.0 ppb (32) 0.1 ppb (2) N/A 4.1 μg/m3 (18) 32.0
 
April 16, 2021, 3 a.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 35.0 ppb (33) 0.1 ppb (2) N/A 4.0 μg/m3 (17) 33.0
 
April 16, 2021, 2 a.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 35.0 ppb (33) 0.1 ppb (2) N/A 5.1 μg/m3 (22) 33.0
 
April 16, 2021, 1 a.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 35.0 ppb (33) 0.1 ppb (2) N/A 5.5 μg/m3 (23) 33.0
 
April 16, 2021, midnight N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 36.0 ppb (34) 0.1 ppb (2) N/A 4.5 μg/m3 (19) 34.0
 
April 15, 2021, 11 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 37.0 ppb (35) 0.1 ppb (2) N/A 4.2 μg/m3 (18) 35.0
 
April 15, 2021, 10 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 40.0 ppb (38) 0.1 ppb (2) N/A 3.8 μg/m3 (16) 38.0
 
April 15, 2021, 9 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 42.0 ppb (39) 0.1 ppb (2) N/A 3.4 μg/m3 (15) 39.0
 
April 15, 2021, 8 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 42.0 ppb (39) 0.1 ppb (2) N/A 3.6 μg/m3 (16) 39.0
 
April 15, 2021, 7 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 42.0 ppb (39) 0.1 ppb (2) N/A 3.9 μg/m3 (17) 39.0
 
April 15, 2021, 6 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 42.0 ppb (39) 0.1 ppb (2) N/A 4.3 μg/m3 (18) 39.0
 
April 15, 2021, 5 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 41.0 ppb (38) 0.1 ppb (2) N/A 4.5 μg/m3 (19) 38.0
 
April 15, 2021, 4 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 39.0 ppb (37) 0.1 ppb (2) N/A 6.0 μg/m3 (25) 37.0
 
April 15, 2021, 3 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 39.0 ppb (37) 0.1 ppb (2) N/A 7.5 μg/m3 (32) 37.0
 
April 15, 2021, 2 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 39.0 ppb (37) 0.1 ppb (2) N/A 8.2 μg/m3 (35) 37.0
 
April 15, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 8.0 μg/m3 (34) 34.0
 
April 15, 2021, noon N/A N/A N/A 4.0 ppb (4) N/A 0.0 ppb (0) 35.0 ppb (33) 0.1 ppb (2) N/A 5.6 μg/m3 (24) 33.0
 
April 15, 2021, 11 a.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 37.0 ppb (35) 0.1 ppb (2) N/A 4.8 μg/m3 (20) 35.0
 
April 15, 2021, 10 a.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 37.0 ppb (35) 0.2 ppb (3) N/A 4.9 μg/m3 (21) 35.0
 
April 15, 2021, 9 a.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 36.0 ppb (34) 0.2 ppb (3) N/A 5.3 μg/m3 (23) 34.0
 
April 15, 2021, 8 a.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 34.0 ppb (32) 0.2 ppb (3) N/A 5.1 μg/m3 (22) 32.0
 
April 15, 2021, 7 a.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 38.0 ppb (36) 0.2 ppb (3) N/A 5.0 μg/m3 (21) 36.0
 
April 15, 2021, 6 a.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 34.0 ppb (32) 0.2 ppb (3) N/A 6.8 μg/m3 (29) 32.0
 
April 15, 2021, 5 a.m. N/A N/A N/A 5.0 ppb (5) N/A 0.0 ppb (0) 22.0 ppb (21) 0.2 ppb (3) N/A 10.4 μg/m3 (44) 44.0
 
April 15, 2021, 4 a.m. N/A N/A N/A 6.0 ppb (6) N/A 0.0 ppb (0) 25.0 ppb (24) 0.2 ppb (3) N/A 9.1 μg/m3 (38) 38.0
 
April 15, 2021, 3 a.m. N/A N/A N/A 7.0 ppb (7) N/A 0.0 ppb (0) 28.0 ppb (26) 0.2 ppb (3) N/A 7.8 μg/m3 (33) 33.0
 
April 15, 2021, 2 a.m. N/A N/A N/A 4.0 ppb (4) N/A 0.0 ppb (0) 36.0 ppb (34) 0.2 ppb (3) N/A 7.1 μg/m3 (30) 34.0
 
April 15, 2021, 1 a.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 42.0 ppb (39) 0.2 ppb (3) N/A 8.3 μg/m3 (35) 39.0
 
April 15, 2021, midnight N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 45.0 ppb (42) 0.2 ppb (3) N/A 9.4 μg/m3 (40) 42.0
 
April 14, 2021, 11 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 43.0 ppb (40) 0.2 ppb (3) N/A 9.9 μg/m3 (42) 42.0
 
April 14, 2021, 10 p.m. N/A N/A N/A 3.0 ppb (3) N/A 1.0 ppb (2) 41.0 ppb (38) 0.2 ppb (3) N/A 10.1 μg/m3 (43) 43.0
 
April 14, 2021, 9 p.m. N/A N/A N/A 4.0 ppb (4) N/A 1.0 ppb (2) 41.0 ppb (38) 0.2 ppb (3) N/A 8.9 μg/m3 (38) 38.0
 
April 14, 2021, 8 p.m. N/A N/A N/A 2.0 ppb (2) N/A 1.0 ppb (2) 47.0 ppb (44) 0.2 ppb (3) N/A 8.7 μg/m3 (37) 44.0
 
April 14, 2021, 7 p.m. N/A N/A N/A 2.0 ppb (2) N/A 1.0 ppb (2) 50.0 ppb (47) 0.2 ppb (3) N/A 8.0 μg/m3 (34) 47.0
 
April 14, 2021, 6 p.m. N/A N/A N/A 2.0 ppb (2) N/A 1.0 ppb (2) 50.0 ppb (47) 0.2 ppb (3) N/A 7.7 μg/m3 (33) 47.0
 
April 14, 2021, 5 p.m. N/A N/A N/A 3.0 ppb (3) N/A 1.0 ppb (2) 49.0 ppb (46) 0.2 ppb (3) N/A 7.7 μg/m3 (33) 46.0
 
April 14, 2021, 4 p.m. N/A N/A N/A 4.0 ppb (4) N/A 1.0 ppb (2) 43.0 ppb (40) 0.2 ppb (3) N/A 7.3 μg/m3 (31) 40.0
 
April 14, 2021, 3 p.m. N/A N/A N/A 9.0 ppb (9) N/A 1.0 ppb (2) 31.0 ppb (29) 0.2 ppb (3) N/A 8.0 μg/m3 (34) 34.0
 
April 14, 2021, 2 p.m. N/A N/A N/A 11.0 ppb (11) N/A 1.0 ppb (2) 25.0 ppb (24) 0.2 ppb (3) N/A 7.9 μg/m3 (33) 33.0
 
April 14, 2021, 1 p.m. N/A N/A N/A 13.0 ppb (13) N/A 1.0 ppb (2) 20.0 ppb (19) 0.2 ppb (3) N/A 8.1 μg/m3 (34) 34.0
 
April 14, 2021, noon N/A N/A N/A 12.0 ppb (12) N/A 1.0 ppb (2) 14.0 ppb (13) 0.2 ppb (3) N/A 7.7 μg/m3 (33) 33.0
 
April 14, 2021, 11 a.m. N/A N/A N/A 20.0 ppb (19) N/A 0.0 ppb (0) 7.0 ppb (7) 0.3 ppb (4) N/A 8.4 μg/m3 (36) 36.0
 
April 14, 2021, 10 a.m. N/A N/A N/A 24.0 ppb (23) N/A 0.0 ppb (0) 6.0 ppb (6) 0.2 ppb (3) N/A 8.1 μg/m3 (34) 34.0
 
April 14, 2021, 9 a.m. N/A N/A N/A 16.0 ppb (16) N/A 1.0 ppb (2) 11.0 ppb (11) 0.1 ppb (2) N/A 7.0 μg/m3 (30) 30.0
 
April 14, 2021, 8 a.m. N/A N/A N/A 6.0 ppb (6) N/A 1.0 ppb (2) 26.0 ppb (25) 0.1 ppb (2) N/A 5.8 μg/m3 (25) 25.0
 
April 14, 2021, 7 a.m. N/A N/A N/A 7.0 ppb (7) N/A 1.0 ppb (2) 28.0 ppb (26) 0.1 ppb (2) N/A 5.3 μg/m3 (23) 26.0
 
April 14, 2021, 6 a.m. N/A N/A N/A 15.0 ppb (15) N/A 0.0 ppb (0) 18.0 ppb (17) 0.1 ppb (2) N/A 6.8 μg/m3 (29) 29.0
 
April 14, 2021, 5 a.m. N/A N/A N/A 22.0 ppb (21) N/A 0.0 ppb (0) 18.0 ppb (17) 0.2 ppb (3) N/A 7.0 μg/m3 (30) 30.0
 
April 14, 2021, 4 a.m. N/A N/A N/A 23.0 ppb (22) N/A 0.0 ppb (0) 24.0 ppb (23) 0.2 ppb (3) N/A 6.9 μg/m3 (29) 29.0
 
April 14, 2021, 3 a.m. N/A N/A N/A 12.0 ppb (12) N/A 1.0 ppb (2) 37.0 ppb (35) 0.2 ppb (3) N/A 5.9 μg/m3 (25) 35.0
 
April 14, 2021, 2 a.m. N/A N/A N/A 8.0 ppb (8) N/A 1.0 ppb (2) 43.0 ppb (40) 0.1 ppb (2) N/A 5.5 μg/m3 (23) 40.0
 
April 14, 2021, 1 a.m. N/A N/A N/A 4.0 ppb (4) N/A 1.0 ppb (2) 51.0 ppb (48) 0.1 ppb (2) N/A 4.5 μg/m3 (19) 48.0
 
April 14, 2021, midnight N/A N/A N/A 3.0 ppb (3) N/A 1.0 ppb (2) 52.0 ppb (49) 0.1 ppb (2) N/A 4.6 μg/m3 (20) 49.0
 
April 13, 2021, 11 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 53.0 ppb (50) 0.1 ppb (2) N/A 4.3 μg/m3 (18) 50.0
 
April 13, 2021, 10 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 54.0 ppb (50) 0.1 ppb (2) N/A 4.2 μg/m3 (18) 50.0
 
April 13, 2021, 9 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 53.0 ppb (50) 0.1 ppb (2) N/A 4.0 μg/m3 (17) 50.0
 
April 13, 2021, 8 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 53.0 ppb (50) 0.1 ppb (2) N/A 4.0 μg/m3 (17) 50.0
 
April 13, 2021, 7 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 53.0 ppb (50) 0.1 ppb (2) N/A 4.1 μg/m3 (18) 50.0
 
April 13, 2021, 6 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 53.0 ppb (50) 0.1 ppb (2) N/A 4.2 μg/m3 (18) 50.0
 
April 13, 2021, 5 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 52.0 ppb (49) 0.1 ppb (2) N/A 4.4 μg/m3 (19) 49.0
 
April 13, 2021, 4 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 50.0 ppb (47) 0.1 ppb (2) N/A 4.4 μg/m3 (19) 47.0
 
April 13, 2021, 3 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 49.0 ppb (46) 0.1 ppb (2) N/A 4.6 μg/m3 (20) 46.0
 
April 13, 2021, 2 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 46.0 ppb (43) 0.1 ppb (2) N/A 5.2 μg/m3 (22) 43.0
 
April 13, 2021, 1 p.m. N/A N/A N/A 3.0 ppb (3) N/A 1.0 ppb (2) 41.0 ppb (38) 0.1 ppb (2) N/A 5.9 μg/m3 (25) 38.0
 
April 13, 2021, noon N/A N/A N/A 4.0 ppb (4) N/A 0.0 ppb (0) 39.0 ppb (37) 0.1 ppb (2) N/A 6.0 μg/m3 (25) 37.0
 
April 13, 2021, 11 a.m. N/A N/A N/A 4.0 ppb (4) N/A 0.0 ppb (0) 37.0 ppb (35) 0.1 ppb (2) N/A 6.0 μg/m3 (25) 35.0
 
April 13, 2021, 10 a.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 37.0 ppb (35) 0.1 ppb (2) N/A 5.8 μg/m3 (25) 35.0
 
April 13, 2021, 9 a.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) N/A 0.1 ppb (2) N/A 5.1 μg/m3 (22) 22.0
 
April 13, 2021, 8 a.m. N/A N/A N/A 2.0 ppb (2) N/A N/A 38.0 ppb (36) 0.1 ppb (2) N/A 5.1 μg/m3 (22) 36.0
 
April 13, 2021, 7 a.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 38.0 ppb (36) N/A N/A 4.8 μg/m3 (20) 36.0
 
April 13, 2021, 6 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 37.0 ppb (35) 0.1 ppb (2) N/A 4.8 μg/m3 (20) 35.0
 
April 13, 2021, 5 a.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 37.0 ppb (35) 0.1 ppb (2) N/A 5.1 μg/m3 (22) 35.0
 
April 13, 2021, 4 a.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 39.0 ppb (37) 0.1 ppb (2) N/A 4.9 μg/m3 (21) 37.0
 
April 13, 2021, 3 a.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 40.0 ppb (38) 0.1 ppb (2) N/A 4.4 μg/m3 (19) 38.0
 
April 13, 2021, 2 a.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 41.0 ppb (38) 0.1 ppb (2) N/A 4.1 μg/m3 (18) 38.0
 
April 13, 2021, 1 a.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 43.0 ppb (40) 0.1 ppb (2) N/A 3.8 μg/m3 (16) 40.0
 
April 13, 2021, midnight N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 45.0 ppb (42) 0.1 ppb (2) N/A 3.3 μg/m3 (14) 42.0
 
April 12, 2021, 11 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 45.0 ppb (42) 0.1 ppb (2) N/A 3.3 μg/m3 (14) 42.0
 
April 12, 2021, 10 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 45.0 ppb (42) 0.1 ppb (2) N/A 3.4 μg/m3 (15) 42.0
 
April 12, 2021, 9 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 44.0 ppb (41) 0.1 ppb (2) N/A 3.2 μg/m3 (14) 41.0
 
April 12, 2021, 8 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 43.0 ppb (40) 0.1 ppb (2) N/A 3.1 μg/m3 (13) 40.0
 
April 12, 2021, 7 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 43.0 ppb (40) 0.1 ppb (2) N/A 2.9 μg/m3 (13) 40.0
 
April 12, 2021, 6 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 43.0 ppb (40) 0.1 ppb (2) N/A 2.9 μg/m3 (13) 40.0
 
April 12, 2021, 5 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 45.0 ppb (42) 0.1 ppb (2) N/A 3.2 μg/m3 (14) 42.0
 
April 12, 2021, 4 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 46.0 ppb (43) 0.1 ppb (2) N/A 3.3 μg/m3 (14) 43.0
 
April 12, 2021, 3 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 48.0 ppb (45) 0.1 ppb (2) N/A 3.7 μg/m3 (16) 45.0
 
April 12, 2021, 2 p.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 45.0 ppb (42) 0.1 ppb (2) N/A 5.0 μg/m3 (21) 42.0
 
April 12, 2021, 1 p.m. N/A N/A N/A 14.0 ppb (14) N/A 0.0 ppb (0) 22.0 ppb (21) 0.2 ppb (3) N/A 6.7 μg/m3 (28) 28.0
 
April 12, 2021, noon N/A N/A N/A 16.0 ppb (16) N/A 0.0 ppb (0) 13.0 ppb (13) 0.2 ppb (3) N/A 7.4 μg/m3 (31) 31.0
 
April 12, 2021, 11 a.m. N/A N/A N/A 18.0 ppb (17) N/A 0.0 ppb (0) 6.0 ppb (6) 0.3 ppb (4) N/A 7.6 μg/m3 (32) 32.0
 
April 12, 2021, 10 a.m. N/A N/A N/A 6.0 ppb (6) N/A 0.0 ppb (0) 15.0 ppb (14) 0.2 ppb (3) N/A 7.0 μg/m3 (30) 30.0
 
April 12, 2021, 9 a.m. N/A N/A N/A 5.0 ppb (5) N/A 0.0 ppb (0) 21.0 ppb (20) 0.1 ppb (2) N/A 6.2 μg/m3 (26) 26.0
 
April 12, 2021, 8 a.m. N/A N/A N/A 5.0 ppb (5) N/A 0.0 ppb (0) 25.0 ppb (24) 0.1 ppb (2) N/A 6.2 μg/m3 (26) 26.0
 
April 12, 2021, 7 a.m. N/A N/A N/A 7.0 ppb (7) N/A 0.0 ppb (0) 27.0 ppb (25) 0.1 ppb (2) N/A 6.6 μg/m3 (28) 28.0
 
April 12, 2021, 6 a.m. N/A N/A N/A 6.0 ppb (6) N/A 0.0 ppb (0) 31.0 ppb (29) 0.1 ppb (2) N/A 6.4 μg/m3 (27) 29.0
 
April 12, 2021, 5 a.m. N/A N/A N/A 5.0 ppb (5) N/A 0.0 ppb (0) 33.0 ppb (31) 0.1 ppb (2) N/A 6.1 μg/m3 (26) 31.0
 
April 12, 2021, 4 a.m. N/A N/A N/A 5.0 ppb (5) N/A 0.0 ppb (0) 35.0 ppb (33) 0.1 ppb (2) N/A 5.9 μg/m3 (25) 33.0
 
April 12, 2021, 3 a.m. N/A N/A N/A 10.0 ppb (10) N/A 0.0 ppb (0) 33.0 ppb (31) 0.1 ppb (2) N/A 6.0 μg/m3 (25) 31.0
 
April 12, 2021, 2 a.m. N/A N/A N/A 8.0 ppb (8) N/A 0.0 ppb (0) 38.0 ppb (36) 0.1 ppb (2) N/A 5.6 μg/m3 (24) 36.0
 
April 12, 2021, 1 a.m. N/A N/A N/A 7.0 ppb (7) N/A 0.0 ppb (0) 41.0 ppb (38) 0.1 ppb (2) N/A 5.4 μg/m3 (23) 38.0
 
April 12, 2021, midnight N/A N/A N/A 7.0 ppb (7) N/A 0.0 ppb (0) 43.0 ppb (40) 0.1 ppb (2) N/A 5.2 μg/m3 (22) 40.0
 
April 11, 2021, 11 p.m. N/A N/A N/A 4.0 ppb (4) N/A 0.0 ppb (0) 46.0 ppb (43) 0.1 ppb (2) N/A 4.6 μg/m3 (20) 43.0
 
April 11, 2021, 10 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 49.0 ppb (46) 0.1 ppb (2) N/A 7.0 μg/m3 (30) 46.0
 
April 11, 2021, 9 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 50.0 ppb (47) 0.1 ppb (2) N/A 4.7 μg/m3 (20) 47.0
 
April 11, 2021, 8 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 50.0 ppb (47) 0.1 ppb (2) N/A 4.7 μg/m3 (20) 47.0
 
April 11, 2021, 7 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 50.0 ppb (47) 0.1 ppb (2) N/A 4.8 μg/m3 (20) 47.0
 
April 11, 2021, 6 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 51.0 ppb (48) 0.1 ppb (2) N/A 4.9 μg/m3 (21) 48.0
 
April 11, 2021, 5 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 51.0 ppb (48) 0.1 ppb (2) N/A 5.4 μg/m3 (23) 48.0
 
April 11, 2021, 4 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 48.0 ppb (45) 0.1 ppb (2) N/A 6.1 μg/m3 (26) 45.0
 
April 11, 2021, 3 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 47.0 ppb (44) 0.1 ppb (2) N/A 6.3 μg/m3 (27) 44.0
 
April 11, 2021, 2 p.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 42.0 ppb (39) 0.2 ppb (3) N/A 6.2 μg/m3 (26) 39.0
 
April 11, 2021, 1 p.m. N/A N/A N/A 8.0 ppb (8) N/A 0.0 ppb (0) 30.0 ppb (28) 0.2 ppb (3) N/A 5.7 μg/m3 (24) 28.0
 
April 11, 2021, noon N/A N/A N/A 4.0 ppb (4) N/A 0.0 ppb (0) 30.0 ppb (28) 0.2 ppb (3) N/A 5.2 μg/m3 (22) 28.0
 
April 11, 2021, 11 a.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 21.0 ppb (20) 0.1 ppb (2) N/A 4.9 μg/m3 (21) 21.0
 
April 11, 2021, 10 a.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 28.0 ppb (26) 0.1 ppb (2) N/A 4.7 μg/m3 (20) 26.0
 
April 11, 2021, 9 a.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 28.0 ppb (26) 0.1 ppb (2) N/A 3.9 μg/m3 (17) 26.0
 
April 11, 2021, 8 a.m. N/A N/A N/A 4.0 ppb (4) N/A 0.0 ppb (0) 34.0 ppb (32) 0.1 ppb (2) N/A 3.9 μg/m3 (17) 32.0
 
April 11, 2021, 7 a.m. N/A N/A N/A 4.0 ppb (4) N/A 0.0 ppb (0) 42.0 ppb (39) 0.1 ppb (2) N/A 3.7 μg/m3 (16) 39.0
 
April 11, 2021, 6 a.m. N/A N/A N/A 4.0 ppb (4) N/A 0.0 ppb (0) 41.0 ppb (38) 0.2 ppb (3) N/A 3.6 μg/m3 (16) 38.0
 
April 11, 2021, 5 a.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 44.0 ppb (41) 0.2 ppb (3) N/A 3.3 μg/m3 (14) 41.0