AQSQID: 240330030

Site Name: Hu-Beltsville

Location: Beltsville (Montpelier), MD

Reporting: True, Located: True

Current AQI: 41.0

Beltsville (Montpelier) MD, US: 39.055302, -76.878304

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
April 8, 2020, 4 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 53.0 ppb (41) N/A N/A 2.0 μg/m3 (8) 41.0
 
April 8, 2020, 3 p.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 47.0 ppb (36) N/A N/A -1.0 μg/m3 (0) 36.0
 
April 8, 2020, 2 p.m. N/A N/A N/A 6.0 ppb (6) N/A 0.0 ppb (0) 38.0 ppb (29) N/A N/A 0.0 μg/m3 (0) 29.0
 
April 8, 2020, 1 p.m. N/A N/A N/A 11.0 ppb (10) N/A 0.0 ppb (0) 28.0 ppb (22) N/A N/A 2.0 μg/m3 (8) 22.0
 
April 8, 2020, noon N/A N/A N/A 10.0 ppb (9) N/A 0.0 ppb (0) 28.0 ppb (22) N/A N/A 0.0 μg/m3 (0) 22.0
 
April 8, 2020, 11 a.m. N/A N/A N/A 12.0 ppb (11) N/A 0.0 ppb (0) 25.0 ppb (19) N/A N/A 3.0 μg/m3 (12) 19.0
 
April 8, 2020, 10 a.m. N/A N/A N/A 12.0 ppb (11) N/A 0.0 ppb (0) 28.0 ppb (22) N/A N/A 3.0 μg/m3 (12) 22.0
 
April 8, 2020, 9 a.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 37.0 ppb (28) N/A N/A 2.0 μg/m3 (8) 28.0
 
April 8, 2020, 8 a.m. N/A N/A N/A 4.0 ppb (4) N/A 0.0 ppb (0) 32.0 ppb (25) N/A N/A 5.0 μg/m3 (21) 25.0
 
April 8, 2020, 7 a.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 13.0 ppb (10) N/A N/A 5.0 μg/m3 (21) 21.0
 
April 8, 2020, 6 a.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 23.0 ppb (18) N/A N/A 6.0 μg/m3 (25) 25.0
 
April 8, 2020, 5 a.m. N/A N/A N/A 4.0 ppb (4) N/A 0.0 ppb (0) 28.0 ppb (22) N/A N/A 7.0 μg/m3 (29) 29.0
 
April 8, 2020, 4 a.m. N/A N/A N/A 6.0 ppb (6) N/A 0.0 ppb (0) 24.0 ppb (18) N/A N/A 6.0 μg/m3 (25) 25.0
 
April 8, 2020, 3 a.m. N/A N/A N/A 7.0 ppb (6) N/A 0.0 ppb (0) 21.0 ppb (16) N/A N/A 7.0 μg/m3 (29) 29.0
 
April 8, 2020, 2 a.m. N/A N/A N/A 6.0 ppb (6) N/A 0.0 ppb (0) 19.0 ppb (15) N/A N/A 4.0 μg/m3 (17) 17.0
 
April 8, 2020, 1 a.m. N/A N/A N/A 6.0 ppb (6) N/A 0.0 ppb (0) 17.0 ppb (13) N/A N/A 6.0 μg/m3 (25) 25.0
 
April 8, 2020, midnight N/A N/A N/A 5.0 ppb (5) N/A 0.0 ppb (0) 25.0 ppb (19) N/A N/A 6.0 μg/m3 (25) 25.0
 
April 7, 2020, 11 p.m. N/A N/A N/A 5.0 ppb (5) N/A 0.0 ppb (0) 37.0 ppb (28) N/A N/A 5.0 μg/m3 (21) 28.0
 
April 7, 2020, 10 p.m. N/A N/A N/A 5.0 ppb (5) N/A 0.0 ppb (0) 40.0 ppb (31) N/A N/A 5.0 μg/m3 (21) 31.0
 
April 7, 2020, 9 p.m. N/A N/A N/A 4.0 ppb (4) N/A 0.0 ppb (0) 41.0 ppb (32) N/A N/A 4.0 μg/m3 (17) 32.0
 
April 7, 2020, 8 p.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 41.0 ppb (32) N/A N/A 4.0 μg/m3 (17) 32.0
 
April 7, 2020, 7 p.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 44.0 ppb (34) N/A N/A 2.0 μg/m3 (8) 34.0
 
April 7, 2020, 6 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 48.0 ppb (37) N/A N/A 2.0 μg/m3 (8) 37.0
 
April 7, 2020, 5 p.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 48.0 ppb (37) N/A N/A 2.0 μg/m3 (8) 37.0
 
April 7, 2020, 4 p.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 47.0 ppb (36) N/A N/A 5.0 μg/m3 (21) 36.0
 
April 7, 2020, 3 p.m. N/A N/A N/A 10.0 ppb (9) N/A 0.0 ppb (0) 36.0 ppb (28) N/A N/A 8.0 μg/m3 (33) 33.0
 
April 7, 2020, 2 p.m. N/A N/A N/A 13.0 ppb (12) N/A 0.0 ppb (0) 28.0 ppb (22) N/A N/A 11.0 μg/m3 (46) 46.0
 
April 7, 2020, 1 p.m. N/A N/A N/A 15.0 ppb (14) N/A 0.0 ppb (0) 19.0 ppb (15) N/A N/A 10.0 μg/m3 (42) 42.0
 
April 7, 2020, noon N/A N/A N/A 14.0 ppb (13) N/A 0.0 ppb (0) 6.0 ppb (5) N/A N/A 10.0 μg/m3 (42) 42.0
 
April 7, 2020, 11 a.m. N/A N/A N/A 6.0 ppb (6) N/A 0.0 ppb (0) 8.0 ppb (6) N/A N/A 6.0 μg/m3 (25) 25.0
 
April 7, 2020, 10 a.m. N/A N/A N/A 8.0 ppb (7) N/A 0.0 ppb (0) 8.0 ppb (6) N/A N/A 5.0 μg/m3 (21) 21.0
 
April 7, 2020, 9 a.m. N/A N/A N/A 9.0 ppb (8) N/A 0.0 ppb (0) 12.0 ppb (9) N/A N/A 8.0 μg/m3 (33) 33.0
 
April 7, 2020, 8 a.m. N/A N/A N/A 12.0 ppb (11) N/A N/A 15.0 ppb (12) N/A N/A 10.0 μg/m3 (42) 42.0
 
April 7, 2020, 7 a.m. N/A N/A N/A 11.0 ppb (10) N/A 0.0 ppb (0) 16.0 ppb (12) N/A N/A 6.0 μg/m3 (25) 25.0
 
April 7, 2020, 6 a.m. N/A N/A N/A 10.0 ppb (9) N/A 0.0 ppb (0) 22.0 ppb (17) N/A N/A 8.0 μg/m3 (33) 33.0
 
April 7, 2020, 5 a.m. N/A N/A N/A 11.0 ppb (10) N/A 0.0 ppb (0) 25.0 ppb (19) N/A N/A 8.0 μg/m3 (33) 33.0
 
April 7, 2020, 4 a.m. N/A N/A N/A 9.0 ppb (8) N/A 0.0 ppb (0) 28.0 ppb (22) N/A N/A 7.0 μg/m3 (29) 29.0
 
April 7, 2020, 3 a.m. N/A N/A N/A 7.0 ppb (6) N/A 0.0 ppb (0) 34.0 ppb (26) N/A N/A 4.0 μg/m3 (17) 26.0
 
April 7, 2020, 2 a.m. N/A N/A N/A 5.0 ppb (5) N/A 0.0 ppb (0) 36.0 ppb (28) N/A N/A 3.0 μg/m3 (12) 28.0
 
April 7, 2020, 1 a.m. N/A N/A N/A 5.0 ppb (5) N/A 0.0 ppb (0) 38.0 ppb (29) N/A N/A 5.0 μg/m3 (21) 29.0
 
April 7, 2020, midnight N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 43.0 ppb (33) N/A N/A 5.0 μg/m3 (21) 33.0
 
April 6, 2020, 11 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 48.0 ppb (37) N/A N/A 1.0 μg/m3 (4) 37.0
 
April 6, 2020, 10 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 54.0 ppb (42) N/A N/A 1.0 μg/m3 (4) 42.0
 
April 6, 2020, 9 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 55.0 ppb (42) N/A N/A 0.0 μg/m3 (0) 42.0
 
April 6, 2020, 8 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 55.0 ppb (42) N/A N/A 1.0 μg/m3 (4) 42.0
 
April 6, 2020, 7 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 53.0 ppb (41) N/A N/A 2.0 μg/m3 (8) 41.0
 
April 6, 2020, 6 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 53.0 ppb (41) N/A N/A 3.0 μg/m3 (12) 41.0
 
April 6, 2020, 5 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 51.0 ppb (39) N/A N/A 2.0 μg/m3 (8) 39.0
 
April 6, 2020, 4 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 47.0 ppb (36) N/A N/A 1.0 μg/m3 (4) 36.0
 
April 6, 2020, 3 p.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 0.0 μg/m3 (0) 33.0
 
April 6, 2020, 2 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 38.0 ppb (29) N/A N/A 2.0 μg/m3 (8) 29.0
 
April 6, 2020, 1 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 34.0 ppb (26) N/A N/A 4.0 μg/m3 (17) 26.0
 
April 6, 2020, noon N/A N/A N/A 4.0 ppb (4) N/A 0.0 ppb (0) 30.0 ppb (23) N/A N/A 4.0 μg/m3 (17) 23.0
 
April 6, 2020, 11 a.m. N/A N/A N/A 8.0 ppb (7) N/A 0.0 ppb (0) 23.0 ppb (18) N/A N/A 8.0 μg/m3 (33) 33.0
 
April 6, 2020, 10 a.m. N/A N/A N/A 5.0 ppb (5) N/A 0.0 ppb (0) 25.0 ppb (19) N/A N/A 11.0 μg/m3 (46) 46.0
 
April 6, 2020, 9 a.m. N/A N/A N/A 4.0 ppb (4) N/A 0.0 ppb (0) 25.0 ppb (19) N/A N/A 9.0 μg/m3 (38) 38.0
 
April 6, 2020, 8 a.m. N/A N/A N/A 5.0 ppb (5) N/A 0.0 ppb (0) 23.0 ppb (18) N/A N/A 5.0 μg/m3 (21) 21.0
 
April 6, 2020, 7 a.m. N/A N/A N/A 7.0 ppb (6) N/A 0.0 ppb (0) 14.0 ppb (11) N/A N/A 5.0 μg/m3 (21) 21.0
 
April 6, 2020, 6 a.m. N/A N/A N/A 9.0 ppb (8) N/A 0.0 ppb (0) 10.0 ppb (8) N/A N/A 5.0 μg/m3 (21) 21.0
 
April 6, 2020, 5 a.m. N/A N/A N/A 9.0 ppb (8) N/A 0.0 ppb (0) 13.0 ppb (10) N/A N/A 7.0 μg/m3 (29) 29.0
 
April 6, 2020, 4 a.m. N/A N/A N/A 7.0 ppb (6) N/A 0.0 ppb (0) 18.0 ppb (14) N/A N/A 7.0 μg/m3 (29) 29.0
 
April 6, 2020, 3 a.m. N/A N/A N/A 4.0 ppb (4) N/A 0.0 ppb (0) 24.0 ppb (18) N/A N/A 5.0 μg/m3 (21) 21.0
 
April 6, 2020, 2 a.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 30.0 ppb (23) N/A N/A 5.0 μg/m3 (21) 23.0
 
April 6, 2020, 1 a.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 36.0 ppb (28) N/A N/A 2.0 μg/m3 (8) 28.0
 
April 6, 2020, midnight N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 39.0 ppb (30) N/A N/A 4.0 μg/m3 (17) 30.0
 
April 5, 2020, 11 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 41.0 ppb (32) N/A N/A 2.0 μg/m3 (8) 32.0
 
April 5, 2020, 10 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 49.0 ppb (38) N/A N/A 2.0 μg/m3 (8) 38.0
 
April 5, 2020, 9 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 50.0 ppb (38) N/A N/A 1.0 μg/m3 (4) 38.0
 
April 5, 2020, 8 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 50.0 ppb (38) N/A N/A 2.0 μg/m3 (8) 38.0
 
April 5, 2020, 7 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 49.0 ppb (38) N/A N/A 2.0 μg/m3 (8) 38.0
 
April 5, 2020, 6 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 47.0 ppb (36) N/A N/A 1.0 μg/m3 (4) 36.0
 
April 5, 2020, 5 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 44.0 ppb (34) N/A N/A 0.0 μg/m3 (0) 34.0
 
April 5, 2020, 4 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 39.0 ppb (30) N/A N/A 1.0 μg/m3 (4) 30.0
 
April 5, 2020, 3 p.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 34.0 ppb (26) N/A N/A 1.0 μg/m3 (4) 26.0
 
April 5, 2020, 2 p.m. N/A N/A N/A 4.0 ppb (4) N/A 0.0 ppb (0) 28.0 ppb (22) N/A N/A 4.0 μg/m3 (17) 22.0
 
April 5, 2020, 1 p.m. N/A N/A N/A 6.0 ppb (6) N/A 0.0 ppb (0) 22.0 ppb (17) N/A N/A 7.0 μg/m3 (29) 29.0
 
April 5, 2020, noon N/A N/A N/A 6.0 ppb (6) N/A 0.0 ppb (0) 20.0 ppb (15) N/A N/A 5.0 μg/m3 (21) 21.0
 
April 5, 2020, 11 a.m. N/A N/A N/A 8.0 ppb (7) N/A 0.0 ppb (0) 18.0 ppb (14) N/A N/A 3.0 μg/m3 (12) 14.0
 
April 5, 2020, 10 a.m. N/A N/A N/A 8.0 ppb (7) N/A 0.0 ppb (0) 17.0 ppb (13) N/A N/A 4.0 μg/m3 (17) 17.0
 
April 5, 2020, 9 a.m. N/A N/A N/A 5.0 ppb (5) N/A 0.0 ppb (0) 16.0 ppb (12) N/A N/A 5.0 μg/m3 (21) 21.0
 
April 5, 2020, 8 a.m. N/A N/A N/A 4.0 ppb (4) N/A 0.0 ppb (0) 18.0 ppb (14) N/A N/A 5.0 μg/m3 (21) 21.0
 
April 5, 2020, 7 a.m. N/A N/A N/A 4.0 ppb (4) N/A 0.0 ppb (0) 24.0 ppb (18) N/A N/A 6.0 μg/m3 (25) 25.0
 
April 5, 2020, 6 a.m. N/A N/A N/A 4.0 ppb (4) N/A 0.0 ppb (0) 27.0 ppb (21) N/A N/A 6.0 μg/m3 (25) 25.0
 
April 5, 2020, 5 a.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 31.0 ppb (24) N/A N/A 5.0 μg/m3 (21) 24.0
 
April 5, 2020, 4 a.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 28.0 ppb (22) N/A N/A 3.0 μg/m3 (12) 22.0
 
April 5, 2020, 3 a.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 25.0 ppb (19) N/A N/A 2.0 μg/m3 (8) 19.0
 
April 5, 2020, 2 a.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 30.0 ppb (23) N/A N/A 2.0 μg/m3 (8) 23.0
 
April 5, 2020, 1 a.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 33.0 ppb (25) N/A N/A 2.0 μg/m3 (8) 25.0
 
April 5, 2020, midnight N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 34.0 ppb (26) N/A N/A 1.0 μg/m3 (4) 26.0
 
April 4, 2020, 11 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 34.0 ppb (26) N/A N/A 1.0 μg/m3 (4) 26.0
 
April 4, 2020, 10 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 36.0 ppb (28) N/A N/A 0.0 μg/m3 (0) 28.0
 
April 4, 2020, 9 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 37.0 ppb (28) N/A N/A 3.0 μg/m3 (12) 28.0
 
April 4, 2020, 8 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 37.0 ppb (28) N/A N/A 4.0 μg/m3 (17) 28.0
 
April 4, 2020, 7 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 38.0 ppb (29) N/A N/A 0.0 μg/m3 (0) 29.0
 
April 4, 2020, 6 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 37.0 ppb (28) N/A N/A 1.0 μg/m3 (4) 28.0
 
April 4, 2020, 5 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 35.0 ppb (27) N/A N/A 0.0 μg/m3 (0) 27.0
 
April 4, 2020, 4 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 33.0 ppb (25) N/A N/A -1.0 μg/m3 (0) 25.0
 
April 4, 2020, 3 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 32.0 ppb (25) N/A N/A 0.0 μg/m3 (0) 25.0
 
April 4, 2020, 2 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 29.0 ppb (22) N/A N/A 0.0 μg/m3 (0) 22.0
 
April 4, 2020, 1 p.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 26.0 ppb (20) N/A N/A 2.0 μg/m3 (8) 20.0
 
April 4, 2020, noon N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 25.0 ppb (19) N/A N/A 3.0 μg/m3 (12) 19.0
 
April 4, 2020, 11 a.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 26.0 ppb (20) N/A N/A 2.0 μg/m3 (8) 20.0
 
April 4, 2020, 10 a.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 28.0 ppb (22) N/A N/A 2.0 μg/m3 (8) 22.0
 
April 4, 2020, 9 a.m. N/A N/A N/A 4.0 ppb (4) N/A 0.0 ppb (0) 27.0 ppb (21) N/A N/A 3.0 μg/m3 (12) 21.0
 
April 4, 2020, 8 a.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 29.0 ppb (22) N/A N/A 2.0 μg/m3 (8) 22.0
 
April 4, 2020, 7 a.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 30.0 ppb (23) N/A N/A -1.0 μg/m3 (0) 23.0
 
April 4, 2020, 6 a.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 32.0 ppb (25) N/A N/A -1.0 μg/m3 (0) 25.0
 
April 4, 2020, 5 a.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 32.0 ppb (25) N/A N/A 0.0 μg/m3 (0) 25.0
 
April 4, 2020, 4 a.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 34.0 ppb (26) N/A N/A -2.0 μg/m3 (0) 26.0
 
April 4, 2020, 3 a.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 35.0 ppb (27) N/A N/A 0.0 μg/m3 (0) 27.0
 
April 4, 2020, 2 a.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 36.0 ppb (28) N/A N/A 2.0 μg/m3 (8) 28.0
 
April 4, 2020, 1 a.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 37.0 ppb (28) N/A N/A 2.0 μg/m3 (8) 28.0
 
April 4, 2020, midnight N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 37.0 ppb (28) N/A N/A 2.0 μg/m3 (8) 28.0
 
April 3, 2020, 11 p.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 39.0 ppb (30) N/A N/A 1.0 μg/m3 (4) 30.0
 
April 3, 2020, 10 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 45.0 ppb (35) N/A N/A 2.0 μg/m3 (8) 35.0
 
April 3, 2020, 9 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 48.0 ppb (37) N/A N/A 0.0 μg/m3 (0) 37.0
 
April 3, 2020, 8 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 48.0 ppb (37) N/A N/A -1.0 μg/m3 (0) 37.0
 
April 3, 2020, 7 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 49.0 ppb (38) N/A N/A -1.0 μg/m3 (0) 38.0
 
April 3, 2020, 6 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 49.0 ppb (38) N/A N/A 0.0 μg/m3 (0) 38.0
 
April 3, 2020, 5 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 48.0 ppb (37) N/A N/A 2.0 μg/m3 (8) 37.0
 
April 3, 2020, 4 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 47.0 ppb (36) N/A N/A 2.0 μg/m3 (8) 36.0
 
April 3, 2020, 3 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 46.0 ppb (35) N/A N/A 1.0 μg/m3 (4) 35.0
 
April 3, 2020, 2 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 44.0 ppb (34) N/A N/A 0.0 μg/m3 (0) 34.0
 
April 3, 2020, 1 p.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 1.0 μg/m3 (4) 33.0
 
April 3, 2020, noon N/A N/A N/A 4.0 ppb (4) N/A 0.0 ppb (0) 40.0 ppb (31) N/A N/A 2.0 μg/m3 (8) 31.0
 
April 3, 2020, 11 a.m. N/A N/A N/A 6.0 ppb (6) N/A 0.0 ppb (0) 38.0 ppb (29) N/A N/A 3.0 μg/m3 (12) 29.0
 
April 3, 2020, 10 a.m. N/A N/A N/A 5.0 ppb (5) N/A 0.0 ppb (0) 40.0 ppb (31) N/A N/A 2.0 μg/m3 (8) 31.0
 
April 3, 2020, 9 a.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 41.0 ppb (32) N/A N/A -2.0 μg/m3 (0) 32.0
 
April 3, 2020, 8 a.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 42.0 ppb (32) N/A N/A 1.0 μg/m3 (4) 32.0
 
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 2.0 μg/m3 (8) 33.0
 
April 3, 2020, 6 a.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 45.0 ppb (35) N/A N/A 0.0 μg/m3 (0) 35.0
 
April 3, 2020, 5 a.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 46.0 ppb (35) N/A N/A 1.0 μg/m3 (4) 35.0
 
April 3, 2020, 4 a.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 45.0 ppb (35) N/A N/A 2.0 μg/m3 (8) 35.0
 
April 3, 2020, 3 a.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 45.0 ppb (35) N/A N/A 2.0 μg/m3 (8) 35.0
 
April 3, 2020, 2 a.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 45.0 ppb (35) N/A N/A 4.0 μg/m3 (17) 35.0
 
April 3, 2020, 1 a.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 45.0 ppb (35) N/A N/A 3.0 μg/m3 (12) 35.0
 
April 3, 2020, midnight N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 46.0 ppb (35) N/A N/A 4.0 μg/m3 (17) 35.0
 
April 2, 2020, 11 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 48.0 ppb (37) N/A N/A 2.0 μg/m3 (8) 37.0
 
April 2, 2020, 10 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 49.0 ppb (38) N/A N/A 0.0 μg/m3 (0) 38.0
 
April 2, 2020, 9 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 48.0 ppb (37) N/A N/A 0.0 μg/m3 (0) 37.0
 
April 2, 2020, 8 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 48.0 ppb (37) N/A N/A 1.0 μg/m3 (4) 37.0
 
April 2, 2020, 7 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 48.0 ppb (37) N/A N/A 2.0 μg/m3 (8) 37.0
 
April 2, 2020, 6 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 48.0 ppb (37) N/A N/A 4.0 μg/m3 (17) 37.0
 
April 2, 2020, 5 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 47.0 ppb (36) N/A N/A 5.0 μg/m3 (21) 36.0
 
April 2, 2020, 4 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 46.0 ppb (35) N/A N/A N/A 35.0
 
April 2, 2020, 3 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 44.0 ppb (34) N/A N/A 1.0 μg/m3 (4) 34.0
 
April 2, 2020, 2 p.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 42.0 ppb (32) N/A N/A 1.0 μg/m3 (4) 32.0
 
April 2, 2020, 1 p.m. N/A N/A N/A 4.0 ppb (4) N/A 0.0 ppb (0) 41.0 ppb (32) N/A N/A 4.0 μg/m3 (17) 32.0
 
April 2, 2020, noon N/A N/A N/A 5.0 ppb (5) N/A 0.0 ppb (0) 39.0 ppb (30) N/A N/A 6.0 μg/m3 (25) 30.0
 
April 2, 2020, 11 a.m. N/A N/A N/A 8.0 ppb (7) N/A 0.0 ppb (0) 35.0 ppb (27) N/A N/A 3.0 μg/m3 (12) 27.0
 
April 2, 2020, 10 a.m. N/A N/A N/A 9.0 ppb (8) N/A 0.0 ppb (0) 33.0 ppb (25) 0.18 ppb (2) N/A 2.0 μg/m3 (8) 25.0
 
April 2, 2020, 9 a.m. N/A N/A N/A 6.0 ppb (6) N/A 0.0 ppb (0) 35.0 ppb (27) 0.16 ppb (2) N/A 3.0 μg/m3 (12) 27.0
 
April 2, 2020, 8 a.m. N/A N/A N/A 4.0 ppb (4) N/A 0.0 ppb (0) 38.0 ppb (29) 0.14 ppb (2) N/A 3.0 μg/m3 (12) 29.0
 
April 2, 2020, 7 a.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 41.0 ppb (32) 0.12 ppb (1) N/A 2.0 μg/m3 (8) 32.0
 
April 2, 2020, 6 a.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 43.0 ppb (33) 0.2 ppb (2) N/A 2.0 μg/m3 (8) 33.0
 
April 2, 2020, 5 a.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 43.0 ppb (33) 0.1 ppb (1) N/A 4.0 μg/m3 (17) 33.0
 
April 2, 2020, 4 a.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 38.0 ppb (29) 0.12 ppb (1) N/A 5.0 μg/m3 (21) 29.0
 
April 2, 2020, 3 a.m. N/A N/A N/A 8.0 ppb (7) N/A 0.0 ppb (0) 18.0 ppb (14) 0.1 ppb (1) N/A 4.0 μg/m3 (17) 17.0
 
April 2, 2020, 2 a.m. N/A N/A N/A 8.0 ppb (7) N/A 0.0 ppb (0) 21.0 ppb (16) 0.2 ppb (2) N/A 2.0 μg/m3 (8) 16.0
 
April 2, 2020, 1 a.m. N/A N/A N/A 7.0 ppb (6) N/A 0.0 ppb (0) 22.0 ppb (17) N/A N/A 3.0 μg/m3 (12) 17.0
 
April 2, 2020, midnight N/A N/A N/A 7.0 ppb (6) N/A 0.0 ppb (0) 23.0 ppb (18) N/A N/A 5.0 μg/m3 (21) 21.0
 
April 1, 2020, 11 p.m. N/A N/A N/A 5.0 ppb (5) N/A 0.0 ppb (0) 32.0 ppb (25) N/A N/A 3.0 μg/m3 (12) 25.0
 
April 1, 2020, 10 p.m. N/A N/A N/A 4.0 ppb (4) N/A 0.0 ppb (0) 36.0 ppb (28) N/A N/A 2.0 μg/m3 (8) 28.0
 
April 1, 2020, 9 p.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 37.0 ppb (28) N/A N/A 2.0 μg/m3 (8) 28.0
 
April 1, 2020, 8 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 39.0 ppb (30) N/A N/A 0.0 μg/m3 (0) 30.0
 
April 1, 2020, 7 p.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 37.0 ppb (28) N/A N/A 3.0 μg/m3 (12) 28.0
 
April 1, 2020, 6 p.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 35.0 ppb (27) N/A N/A 3.0 μg/m3 (12) 27.0
 
April 1, 2020, 5 p.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 34.0 ppb (26) N/A N/A 4.0 μg/m3 (17) 26.0