AQSQID: 511611004

Site Name: East Vinton Elementary School

Location: Roanoke (Gates Lane), VA

Reporting: True, Located: True

Current AQI: 40.0

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 6, 2020, 4 a.m. N/A N/A N/A 5.0 ppb (5) N/A 0.0 ppb (0) 32.0 ppb (25) 0.2 ppb (2) N/A 9.5 μg/m3 (40) 40.0
 
April 6, 2020, 3 a.m. N/A N/A N/A 7.0 ppb (6) N/A 0.0 ppb (0) 28.0 ppb (22) 0.2 ppb (2) N/A 8.7 μg/m3 (36) 36.0
 
April 6, 2020, 2 a.m. N/A N/A N/A 5.0 ppb (5) N/A 0.0 ppb (0) 33.0 ppb (25) 0.2 ppb (2) N/A 7.4 μg/m3 (31) 31.0
 
April 6, 2020, 1 a.m. N/A N/A N/A 5.0 ppb (5) N/A 0.0 ppb (0) 37.0 ppb (28) 0.2 ppb (2) N/A 6.8 μg/m3 (28) 28.0
 
April 6, 2020, midnight N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 40.0 ppb (31) 0.2 ppb (2) N/A 6.2 μg/m3 (26) 31.0
 
April 5, 2020, 11 p.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 42.0 ppb (32) 0.2 ppb (2) N/A 5.9 μg/m3 (25) 32.0
 
April 5, 2020, 10 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 45.0 ppb (35) 0.1 ppb (1) N/A 5.8 μg/m3 (24) 35.0
 
April 5, 2020, 9 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 45.0 ppb (35) 0.1 ppb (1) N/A 6.1 μg/m3 (25) 35.0
 
April 5, 2020, 8 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 46.0 ppb (35) 0.1 ppb (1) N/A 6.4 μg/m3 (27) 35.0
 
April 5, 2020, 7 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 46.0 ppb (35) 0.1 ppb (1) N/A 5.8 μg/m3 (24) 35.0
 
April 5, 2020, 6 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 45.0 ppb (35) 0.1 ppb (1) N/A 5.1 μg/m3 (21) 35.0
 
April 5, 2020, 5 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 40.0 ppb (31) 0.1 ppb (1) N/A 4.8 μg/m3 (20) 31.0
 
April 5, 2020, 4 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 37.0 ppb (28) 0.1 ppb (1) N/A 4.3 μg/m3 (18) 28.0
 
April 5, 2020, 3 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 35.0 ppb (27) 0.1 ppb (1) N/A 4.1 μg/m3 (17) 27.0
 
April 5, 2020, 2 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 32.0 ppb (25) 0.1 ppb (1) N/A 4.5 μg/m3 (19) 25.0
 
April 5, 2020, 1 p.m. N/A N/A N/A 4.0 ppb (4) N/A 0.0 ppb (0) 26.0 ppb (20) 0.2 ppb (2) N/A 4.1 μg/m3 (17) 20.0
 
April 5, 2020, noon N/A N/A N/A 4.0 ppb (4) N/A 0.0 ppb (0) 17.0 ppb (13) 0.1 ppb (1) N/A 4.1 μg/m3 (17) 17.0
 
April 5, 2020, 11 a.m. N/A N/A N/A 4.0 ppb (4) N/A 0.0 ppb (0) 20.0 ppb (15) 0.1 ppb (1) N/A 3.8 μg/m3 (16) 16.0
 
April 5, 2020, 10 a.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 22.0 ppb (17) 0.1 ppb (1) N/A 3.7 μg/m3 (15) 17.0
 
April 5, 2020, 9 a.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 23.0 ppb (18) 0.1 ppb (1) N/A 3.8 μg/m3 (16) 18.0
 
April 5, 2020, 8 a.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 26.0 ppb (20) 0.1 ppb (1) N/A 4.2 μg/m3 (18) 20.0
 
April 5, 2020, 7 a.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 29.0 ppb (22) 0.1 ppb (1) N/A 4.2 μg/m3 (18) 22.0
 
April 5, 2020, 6 a.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 32.0 ppb (25) 0.1 ppb (1) N/A 3.8 μg/m3 (16) 25.0
 
April 5, 2020, 5 a.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 34.0 ppb (26) 0.1 ppb (1) N/A 3.6 μg/m3 (15) 26.0
 
April 5, 2020, 4 a.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 37.0 ppb (28) 0.1 ppb (1) N/A 4.9 μg/m3 (20) 28.0
 
April 5, 2020, 3 a.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 40.0 ppb (31) 0.1 ppb (1) N/A 5.1 μg/m3 (21) 31.0
 
April 5, 2020, 2 a.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 44.0 ppb (34) 0.1 ppb (1) N/A 9.7 μg/m3 (40) 40.0
 
April 5, 2020, 1 a.m. N/A N/A N/A 4.0 ppb (4) N/A 0.0 ppb (0) 44.0 ppb (34) 0.2 ppb (2) N/A 5.9 μg/m3 (25) 34.0
 
April 5, 2020, midnight N/A N/A N/A 4.0 ppb (4) N/A 0.0 ppb (0) 47.0 ppb (36) 0.1 ppb (1) N/A 3.6 μg/m3 (15) 36.0
 
April 4, 2020, 11 p.m. N/A N/A N/A 2.0 ppb (2) N/A 1.0 ppb (1) 50.0 ppb (38) 0.1 ppb (1) N/A 4.3 μg/m3 (18) 38.0
 
April 4, 2020, 10 p.m. N/A N/A N/A 2.0 ppb (2) N/A 1.0 ppb (1) 50.0 ppb (38) 0.1 ppb (1) N/A 3.0 μg/m3 (12) 38.0
 
April 4, 2020, 9 p.m. N/A N/A N/A 1.0 ppb (1) N/A 1.0 ppb (1) 50.0 ppb (38) 0.1 ppb (1) N/A 2.4 μg/m3 (10) 38.0
 
April 4, 2020, 8 p.m. N/A N/A N/A 1.0 ppb (1) N/A 1.0 ppb (1) 52.0 ppb (40) 0.1 ppb (1) N/A 3.0 μg/m3 (12) 40.0
 
April 4, 2020, 7 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 52.0 ppb (40) 0.1 ppb (1) N/A 2.7 μg/m3 (11) 40.0
 
April 4, 2020, 6 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 52.0 ppb (40) 0.1 ppb (1) N/A 2.8 μg/m3 (12) 40.0
 
April 4, 2020, 5 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 51.0 ppb (39) 0.1 ppb (1) N/A 3.1 μg/m3 (13) 39.0
 
April 4, 2020, 4 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 50.0 ppb (38) 0.1 ppb (1) N/A 3.2 μg/m3 (13) 38.0
 
April 4, 2020, 3 p.m. N/A N/A N/A 3.0 ppb (3) N/A 1.0 ppb (1) 48.0 ppb (37) 0.1 ppb (1) N/A 3.2 μg/m3 (13) 37.0
 
April 4, 2020, 2 p.m. N/A N/A N/A 2.0 ppb (2) N/A 1.0 ppb (1) 47.0 ppb (36) 0.1 ppb (1) N/A 3.9 μg/m3 (16) 36.0
 
April 4, 2020, 1 p.m. N/A N/A N/A 4.0 ppb (4) N/A 1.0 ppb (1) 39.0 ppb (30) 0.1 ppb (1) N/A 5.1 μg/m3 (21) 30.0
 
April 4, 2020, noon N/A N/A N/A 7.0 ppb (6) N/A 0.0 ppb (0) 28.0 ppb (22) 0.1 ppb (1) N/A 4.2 μg/m3 (18) 22.0
 
April 4, 2020, 11 a.m. N/A N/A N/A 1.0 ppb (1) N/A 1.0 ppb (1) 40.0 ppb (31) 0.1 ppb (1) N/A 4.7 μg/m3 (20) 31.0
 
April 4, 2020, 10 a.m. N/A N/A N/A 2.0 ppb (2) N/A 1.0 ppb (1) 47.0 ppb (36) 0.1 ppb (1) N/A 4.8 μg/m3 (20) 36.0
 
April 4, 2020, 9 a.m. N/A N/A N/A 3.0 ppb (3) N/A 1.0 ppb (1) 46.0 ppb (35) 0.1 ppb (1) N/A 5.1 μg/m3 (21) 35.0
 
April 4, 2020, 8 a.m. N/A N/A N/A 3.0 ppb (3) N/A 1.0 ppb (1) 44.0 ppb (34) 0.1 ppb (1) N/A 5.2 μg/m3 (22) 34.0
 
April 4, 2020, 7 a.m. N/A N/A N/A 4.0 ppb (4) N/A 1.0 ppb (1) 42.0 ppb (32) 0.1 ppb (1) N/A 5.3 μg/m3 (22) 32.0
 
April 4, 2020, 6 a.m. N/A N/A N/A 4.0 ppb (4) N/A 1.0 ppb (1) 45.0 ppb (35) 0.1 ppb (1) N/A 5.6 μg/m3 (23) 35.0
 
April 4, 2020, 5 a.m. N/A N/A N/A 3.0 ppb (3) N/A 1.0 ppb (1) 47.0 ppb (36) 0.1 ppb (1) N/A 4.9 μg/m3 (20) 36.0
 
April 4, 2020, 4 a.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 49.0 ppb (38) 0.1 ppb (1) N/A 4.7 μg/m3 (20) 38.0
 
April 4, 2020, 3 a.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 49.0 ppb (38) 0.1 ppb (1) N/A 5.0 μg/m3 (21) 38.0
 
April 4, 2020, 2 a.m. N/A N/A N/A 2.0 ppb (2) N/A 1.0 ppb (1) 49.0 ppb (38) 0.1 ppb (1) N/A 4.3 μg/m3 (18) 38.0
 
April 4, 2020, 1 a.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 49.0 ppb (38) 0.1 ppb (1) N/A 4.0 μg/m3 (17) 38.0
 
April 4, 2020, midnight N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 49.0 ppb (38) 0.1 ppb (1) N/A 3.8 μg/m3 (16) 38.0
 
April 3, 2020, 11 p.m. N/A N/A N/A 2.0 ppb (2) N/A 1.0 ppb (1) 51.0 ppb (39) 0.1 ppb (1) N/A 3.6 μg/m3 (15) 39.0
 
April 3, 2020, 10 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 53.0 ppb (41) 0.0 ppb (0) N/A 3.6 μg/m3 (15) 41.0
 
April 3, 2020, 9 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 53.0 ppb (41) 0.0 ppb (0) N/A 3.6 μg/m3 (15) 41.0
 
April 3, 2020, 8 p.m. N/A N/A N/A 1.0 ppb (1) N/A 1.0 ppb (1) 52.0 ppb (40) 0.1 ppb (1) N/A 3.7 μg/m3 (15) 40.0
 
April 3, 2020, 7 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 51.0 ppb (39) 0.0 ppb (0) N/A 3.7 μg/m3 (15) 39.0
 
April 3, 2020, 6 p.m. N/A N/A N/A 2.0 ppb (2) N/A 1.0 ppb (1) 51.0 ppb (39) 0.0 ppb (0) N/A 3.6 μg/m3 (15) 39.0
 
April 3, 2020, 5 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 50.0 ppb (38) 0.0 ppb (0) N/A 3.5 μg/m3 (15) 38.0
 
April 3, 2020, 4 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 49.0 ppb (38) 0.0 ppb (0) N/A 3.5 μg/m3 (15) 38.0
 
April 3, 2020, 3 p.m. N/A N/A N/A 1.0 ppb (1) N/A 1.0 ppb (1) 47.0 ppb (36) 0.1 ppb (1) N/A 3.6 μg/m3 (15) 36.0
 
April 3, 2020, 2 p.m. N/A N/A N/A 3.0 ppb (3) N/A 1.0 ppb (1) 45.0 ppb (35) 0.1 ppb (1) N/A 3.5 μg/m3 (15) 35.0
 
April 3, 2020, 1 p.m. N/A N/A N/A 2.0 ppb (2) N/A 1.0 ppb (1) 45.0 ppb (35) 0.0 ppb (0) N/A 3.5 μg/m3 (15) 35.0
 
April 3, 2020, noon N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 44.0 ppb (34) 0.0 ppb (0) N/A 3.5 μg/m3 (15) 34.0
 
April 3, 2020, 11 a.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 44.0 ppb (34) 0.1 ppb (1) N/A 3.6 μg/m3 (15) 34.0
 
April 3, 2020, 10 a.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 45.0 ppb (35) 0.0 ppb (0) N/A 3.4 μg/m3 (14) 35.0
 
April 3, 2020, 9 a.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) N/A 0.0 ppb (0) N/A 3.4 μg/m3 (14) 14.0
 
April 3, 2020, 8 a.m. N/A N/A N/A 1.0 ppb (1) N/A N/A 44.0 ppb (34) 0.1 ppb (1) N/A 3.5 μg/m3 (15) 34.0
 
April 3, 2020, 7 a.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 43.0 ppb (33) N/A N/A 3.5 μg/m3 (15) 33.0
 
April 3, 2020, 6 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 45.0 ppb (35) 0.1 ppb (1) N/A 3.6 μg/m3 (15) 35.0
 
April 3, 2020, 5 a.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 45.0 ppb (35) 0.1 ppb (1) N/A 3.6 μg/m3 (15) 35.0
 
April 3, 2020, 4 a.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 45.0 ppb (35) 0.1 ppb (1) N/A 3.7 μg/m3 (15) 35.0
 
April 3, 2020, 3 a.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 45.0 ppb (35) 0.1 ppb (1) N/A 3.7 μg/m3 (15) 35.0
 
April 3, 2020, 2 a.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 45.0 ppb (35) 0.1 ppb (1) N/A 3.7 μg/m3 (15) 35.0
 
April 3, 2020, 1 a.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 43.0 ppb (33) 0.1 ppb (1) N/A 3.6 μg/m3 (15) 33.0
 
April 3, 2020, midnight N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 44.0 ppb (34) 0.1 ppb (1) N/A 3.7 μg/m3 (15) 34.0
 
April 2, 2020, 11 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 45.0 ppb (35) 0.1 ppb (1) N/A 3.7 μg/m3 (15) 35.0
 
April 2, 2020, 10 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 46.0 ppb (35) 0.1 ppb (1) N/A 3.5 μg/m3 (15) 35.0
 
April 2, 2020, 9 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 46.0 ppb (35) 0.1 ppb (1) N/A 3.5 μg/m3 (15) 35.0
 
April 2, 2020, 8 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 46.0 ppb (35) 0.1 ppb (1) N/A 3.5 μg/m3 (15) 35.0
 
April 2, 2020, 7 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 45.0 ppb (35) 0.1 ppb (1) N/A 3.3 μg/m3 (14) 35.0
 
April 2, 2020, 6 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 45.0 ppb (35) 0.1 ppb (1) N/A 3.1 μg/m3 (13) 35.0
 
April 2, 2020, 5 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 45.0 ppb (35) 0.1 ppb (1) N/A 3.1 μg/m3 (13) 35.0
 
April 2, 2020, 4 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 45.0 ppb (35) 0.1 ppb (1) N/A 3.1 μg/m3 (13) 35.0
 
April 2, 2020, 3 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 43.0 ppb (33) 0.1 ppb (1) N/A 3.4 μg/m3 (14) 33.0
 
April 2, 2020, 2 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 41.0 ppb (32) 0.1 ppb (1) N/A 3.7 μg/m3 (15) 32.0
 
April 2, 2020, 1 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 40.0 ppb (31) 0.1 ppb (1) N/A 3.7 μg/m3 (15) 31.0
 
April 2, 2020, noon N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 39.0 ppb (30) 0.1 ppb (1) N/A 4.2 μg/m3 (18) 30.0
 
April 2, 2020, 11 a.m. N/A N/A N/A 4.0 ppb (4) N/A 0.0 ppb (0) 35.0 ppb (27) 0.1 ppb (1) N/A 4.5 μg/m3 (19) 27.0
 
April 2, 2020, 10 a.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 32.0 ppb (25) 0.1 ppb (1) N/A 4.5 μg/m3 (19) 25.0
 
April 2, 2020, 9 a.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 29.0 ppb (22) 0.1 ppb (1) N/A 4.4 μg/m3 (18) 22.0
 
April 2, 2020, 8 a.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 27.0 ppb (21) 0.1 ppb (1) N/A 4.3 μg/m3 (18) 21.0
 
April 2, 2020, 7 a.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 28.0 ppb (22) 0.1 ppb (1) N/A 4.4 μg/m3 (18) 22.0
 
April 2, 2020, 6 a.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 27.0 ppb (21) 0.1 ppb (1) N/A 4.4 μg/m3 (18) 21.0
 
April 2, 2020, 5 a.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 30.0 ppb (23) 0.1 ppb (1) N/A 5.0 μg/m3 (21) 23.0
 
April 2, 2020, 4 a.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 28.0 ppb (22) 0.1 ppb (1) N/A 4.3 μg/m3 (18) 22.0
 
April 2, 2020, 3 a.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 29.0 ppb (22) 0.1 ppb (1) N/A 3.7 μg/m3 (15) 22.0
 
April 2, 2020, 2 a.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 26.0 ppb (20) 0.1 ppb (1) N/A 2.8 μg/m3 (12) 20.0
 
April 2, 2020, 1 a.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 24.0 ppb (18) 0.1 ppb (1) N/A 2.4 μg/m3 (10) 18.0
 
April 2, 2020, midnight N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 26.0 ppb (20) 0.1 ppb (1) N/A 2.6 μg/m3 (11) 20.0
 
April 1, 2020, 11 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 26.0 ppb (20) 0.1 ppb (1) N/A 3.1 μg/m3 (13) 20.0
 
April 1, 2020, 10 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 29.0 ppb (22) 0.1 ppb (1) N/A 3.1 μg/m3 (13) 22.0
 
April 1, 2020, 9 p.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 29.0 ppb (22) 0.1 ppb (1) N/A 2.3 μg/m3 (10) 22.0
 
April 1, 2020, 8 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 29.0 ppb (22) 0.1 ppb (1) N/A 2.5 μg/m3 (10) 22.0
 
April 1, 2020, 7 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 30.0 ppb (23) 0.1 ppb (1) N/A 1.3 μg/m3 (5) 23.0
 
April 1, 2020, 6 p.m. N/A N/A N/A 2.0 ppb (2) N/A 1.0 ppb (1) 31.0 ppb (24) 0.1 ppb (1) N/A 1.0 μg/m3 (4) 24.0
 
April 1, 2020, 5 p.m. N/A N/A N/A 2.0 ppb (2) N/A 1.0 ppb (1) 31.0 ppb (24) 0.2 ppb (2) N/A 0.8 μg/m3 (3) 24.0
 
April 1, 2020, 4 p.m. N/A N/A N/A 2.0 ppb (2) N/A 1.0 ppb (1) 30.0 ppb (23) 0.1 ppb (1) N/A 0.9 μg/m3 (4) 23.0
 
April 1, 2020, 3 p.m. N/A N/A N/A 2.0 ppb (2) N/A 1.0 ppb (1) 28.0 ppb (22) 0.1 ppb (1) N/A 0.9 μg/m3 (4) 22.0
 
April 1, 2020, 2 p.m. N/A N/A N/A 3.0 ppb (3) N/A 1.0 ppb (1) 25.0 ppb (19) 0.1 ppb (1) N/A 1.8 μg/m3 (8) 19.0
 
April 1, 2020, 1 p.m. N/A N/A N/A 4.0 ppb (4) N/A 0.0 ppb (0) 21.0 ppb (16) 0.1 ppb (1) N/A 3.0 μg/m3 (12) 16.0
 
April 1, 2020, noon N/A N/A N/A 6.0 ppb (6) N/A 0.0 ppb (0) 19.0 ppb (15) 0.1 ppb (1) N/A 1.6 μg/m3 (7) 15.0
 
April 1, 2020, 11 a.m. N/A N/A N/A 4.0 ppb (4) N/A 0.0 ppb (0) 21.0 ppb (16) 0.1 ppb (1) N/A 1.0 μg/m3 (4) 16.0
 
April 1, 2020, 10 a.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 24.0 ppb (18) 0.1 ppb (1) N/A 0.8 μg/m3 (3) 18.0
 
April 1, 2020, 9 a.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 25.0 ppb (19) 0.1 ppb (1) N/A 0.9 μg/m3 (4) 19.0
 
April 1, 2020, 8 a.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 26.0 ppb (20) 0.1 ppb (1) N/A 1.0 μg/m3 (4) 20.0
 
April 1, 2020, 7 a.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 27.0 ppb (21) 0.1 ppb (1) N/A 1.3 μg/m3 (5) 21.0
 
April 1, 2020, 6 a.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 26.0 ppb (20) 0.1 ppb (1) N/A 1.5 μg/m3 (6) 20.0
 
April 1, 2020, 5 a.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 27.0 ppb (21) 0.1 ppb (1) N/A 2.2 μg/m3 (9) 21.0
 
April 1, 2020, 4 a.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 28.0 ppb (22) 0.1 ppb (1) N/A 4.3 μg/m3 (18) 22.0
 
April 1, 2020, 3 a.m. N/A N/A N/A 4.0 ppb (4) N/A 0.0 ppb (0) 27.0 ppb (21) 0.1 ppb (1) N/A 4.0 μg/m3 (17) 21.0
 
April 1, 2020, 2 a.m. N/A N/A N/A 4.0 ppb (4) N/A 0.0 ppb (0) 26.0 ppb (20) 0.1 ppb (1) N/A 3.8 μg/m3 (16) 20.0
 
April 1, 2020, 1 a.m. N/A N/A N/A 4.0 ppb (4) N/A 0.0 ppb (0) 29.0 ppb (22) 0.1 ppb (1) N/A 4.0 μg/m3 (17) 22.0
 
April 1, 2020, midnight N/A N/A N/A 4.0 ppb (4) N/A 0.0 ppb (0) 29.0 ppb (22) 0.1 ppb (1) N/A 3.6 μg/m3 (15) 22.0
 
March 31, 2020, 11 p.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 30.0 ppb (23) 0.1 ppb (1) N/A 3.3 μg/m3 (14) 23.0
 
March 31, 2020, 10 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 34.0 ppb (26) 0.1 ppb (1) N/A 3.8 μg/m3 (16) 26.0
 
March 31, 2020, 9 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 36.0 ppb (28) 0.1 ppb (1) N/A 4.1 μg/m3 (17) 28.0
 
March 31, 2020, 8 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 35.0 ppb (27) 0.1 ppb (1) N/A 4.2 μg/m3 (18) 27.0
 
March 31, 2020, 7 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 35.0 ppb (27) 0.1 ppb (1) N/A 4.3 μg/m3 (18) 27.0
 
March 31, 2020, 6 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 35.0 ppb (27) 0.1 ppb (1) N/A 4.7 μg/m3 (20) 27.0
 
March 31, 2020, 5 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 34.0 ppb (26) 0.1 ppb (1) N/A 4.0 μg/m3 (17) 26.0
 
March 31, 2020, 4 p.m. N/A N/A N/A 4.0 ppb (4) N/A 0.0 ppb (0) 33.0 ppb (25) 0.1 ppb (1) N/A 3.4 μg/m3 (14) 25.0
 
March 31, 2020, 3 p.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 36.0 ppb (28) 0.1 ppb (1) N/A 3.4 μg/m3 (14) 28.0
 
March 31, 2020, 2 p.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 35.0 ppb (27) 0.1 ppb (1) N/A 2.9 μg/m3 (12) 27.0
 
March 31, 2020, 1 p.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 38.0 ppb (29) 0.1 ppb (1) N/A 2.7 μg/m3 (11) 29.0
 
March 31, 2020, noon N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 39.0 ppb (30) 0.1 ppb (1) N/A 3.0 μg/m3 (12) 30.0
 
March 31, 2020, 11 a.m. N/A N/A N/A 4.0 ppb (4) N/A 0.0 ppb (0) 37.0 ppb (28) 0.1 ppb (1) N/A 2.7 μg/m3 (11) 28.0
 
March 31, 2020, 10 a.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 38.0 ppb (29) 0.1 ppb (1) N/A 2.6 μg/m3 (11) 29.0
 
March 31, 2020, 9 a.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) N/A 0.1 ppb (1) N/A 2.7 μg/m3 (11) 11.0
 
March 31, 2020, 8 a.m. N/A N/A N/A 2.0 ppb (2) N/A N/A 41.0 ppb (32) 0.0 ppb (0) N/A 2.9 μg/m3 (12) 32.0
 
March 31, 2020, 7 a.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 43.0 ppb (33) N/A N/A 3.4 μg/m3 (14) 33.0
 
March 31, 2020, 6 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 45.0 ppb (35) 0.0 ppb (0) N/A 3.6 μg/m3 (15) 35.0
 
March 31, 2020, 5 a.m. N/A N/A N/A 2.0 ppb (2) N/A 1.0 ppb (1) 46.0 ppb (35) 0.0 ppb (0) N/A 3.5 μg/m3 (15) 35.0
 
March 31, 2020, 4 a.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 45.0 ppb (35) 0.0 ppb (0) N/A 3.3 μg/m3 (14) 35.0
 
March 31, 2020, 3 a.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 48.0 ppb (37) 0.0 ppb (0) N/A 3.3 μg/m3 (14) 37.0
 
March 31, 2020, 2 a.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 49.0 ppb (38) 0.0 ppb (0) N/A 3.5 μg/m3 (15) 38.0
 
March 31, 2020, 1 a.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 46.0 ppb (35) 0.0 ppb (0) N/A 3.3 μg/m3 (14) 35.0
 
March 31, 2020, midnight N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 46.0 ppb (35) 0.0 ppb (0) N/A 3.0 μg/m3 (12) 35.0
 
March 30, 2020, 11 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 48.0 ppb (37) 0.0 ppb (0) N/A 2.9 μg/m3 (12) 37.0
 
March 30, 2020, 10 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 50.0 ppb (38) 0.0 ppb (0) N/A 2.7 μg/m3 (11) 38.0
 
March 30, 2020, 9 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 49.0 ppb (38) 0.0 ppb (0) N/A 2.6 μg/m3 (11) 38.0
 
March 30, 2020, 8 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 49.0 ppb (38) 0.0 ppb (0) N/A 2.8 μg/m3 (12) 38.0
 
March 30, 2020, 7 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 48.0 ppb (37) 0.0 ppb (0) N/A 2.6 μg/m3 (11) 37.0
 
March 30, 2020, 6 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 49.0 ppb (38) 0.0 ppb (0) N/A 3.1 μg/m3 (13) 38.0
 
March 30, 2020, 5 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 48.0 ppb (37) 0.0 ppb (0) N/A 3.2 μg/m3 (13) 37.0
 
March 30, 2020, 4 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 49.0 ppb (38) 0.0 ppb (0) N/A 3.6 μg/m3 (15) 38.0
 
March 30, 2020, 3 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 47.0 ppb (36) 0.1 ppb (1) N/A 3.6 μg/m3 (15) 36.0
 
March 30, 2020, 2 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 46.0 ppb (35) 0.1 ppb (1) N/A 4.0 μg/m3 (17) 35.0
 
March 30, 2020, 1 p.m. N/A N/A N/A 6.0 ppb (6) N/A 0.0 ppb (0) 41.0 ppb (32) 0.1 ppb (1) N/A 3.9 μg/m3 (16) 32.0
 
March 30, 2020, noon N/A N/A N/A 10.0 ppb (9) N/A 0.0 ppb (0) 35.0 ppb (27) 0.1 ppb (1) N/A 3.1 μg/m3 (13) 27.0
 
March 30, 2020, 11 a.m. N/A N/A N/A 4.0 ppb (4) N/A 0.0 ppb (0) 42.0 ppb (32) 0.1 ppb (1) N/A 2.5 μg/m3 (10) 32.0
 
March 30, 2020, 10 a.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 45.0 ppb (35) 0.0 ppb (0) N/A 2.1 μg/m3 (9) 35.0
 
March 30, 2020, 9 a.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 47.0 ppb (36) 0.0 ppb (0) N/A 1.9 μg/m3 (8) 36.0
 
March 30, 2020, 8 a.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 47.0 ppb (36) 0.1 ppb (1) N/A 1.9 μg/m3 (8) 36.0
 
March 30, 2020, 7 a.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 47.0 ppb (36) 0.0 ppb (0) N/A 2.1 μg/m3 (9) 36.0
 
March 30, 2020, 6 a.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 46.0 ppb (35) 0.1 ppb (1) N/A 3.8 μg/m3 (16) 35.0
 
March 30, 2020, 5 a.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 44.0 ppb (34) 0.1 ppb (1) N/A 4.6 μg/m3 (19) 34.0