AQSQID: 530330080

Site Name: Seattle-Beacon Hill

Location: Seattle (N Beacon Hill), WA

Reporting: True, Located: True

Current AQI: 21.0

Seattle (N Beacon Hill) WA, US: 47.568236, -122.308628

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
April 7, 2020, 11 a.m. N/A 0.1 ppb (0) 4.8 ppb (4) 4.0 ppb (4) N/A 1.0 ppb (1) 25.0 ppb (19) 0.18 ppb (2) N/A 5.0 μg/m3 (21) 21.0
 
April 7, 2020, 10 a.m. N/A 0.0 ppb (0) 3.6 ppb (3) 3.0 ppb (3) N/A 1.0 ppb (1) N/A 0.16 ppb (2) N/A 5.0 μg/m3 (21) 21.0
 
April 7, 2020, 9 a.m. N/A 0.0 ppb (0) 2.9 ppb (3) 3.0 ppb (3) N/A 1.0 ppb (1) 31.0 ppb (24) 0.17 ppb (2) N/A 4.0 μg/m3 (17) 24.0
 
April 7, 2020, 8 a.m. N/A 0.1 ppb (0) 6.7 ppb (6) 6.0 ppb (6) N/A 1.0 ppb (1) 26.0 ppb (20) 0.22 ppb (2) N/A 4.0 μg/m3 (17) 20.0
 
April 7, 2020, 7 a.m. N/A 0.1 ppb (0) 5.1 ppb (5) 4.0 ppb (4) N/A 1.0 ppb (1) 31.0 ppb (24) 0.19 ppb (2) N/A 4.0 μg/m3 (17) 24.0
 
April 7, 2020, 6 a.m. N/A 0.0 ppb (0) 4.0 ppb (4) 3.0 ppb (3) N/A 1.0 ppb (1) 34.0 ppb (26) 0.18 ppb (2) N/A 6.0 μg/m3 (25) 26.0
 
April 7, 2020, 5 a.m. N/A 0.1 ppb (0) 4.7 ppb (4) 4.0 ppb (4) N/A 1.0 ppb (1) 34.0 ppb (26) 0.19 ppb (2) N/A 6.0 μg/m3 (25) 26.0
 
April 7, 2020, 4 a.m. N/A 0.0 ppb (0) 9.0 ppb (8) 9.0 ppb (8) N/A 1.0 ppb (1) 31.0 ppb (24) 0.21 ppb (2) N/A 6.0 μg/m3 (25) 25.0
 
April 7, 2020, 3 a.m. N/A 0.6 ppb (1) 18.6 ppb (17) 18.0 ppb (17) N/A 1.0 ppb (1) 24.0 ppb (18) 0.21 ppb (2) N/A 5.0 μg/m3 (21) 21.0
 
April 7, 2020, 2 a.m. N/A 1.4 ppb (1) 23.1 ppb (21) 23.0 ppb (21) N/A 1.0 ppb (1) 22.0 ppb (17) 0.18 ppb (2) N/A 4.0 μg/m3 (17) 21.0
 
April 7, 2020, 1 a.m. N/A 0.5 ppb (0) 5.5 ppb (5) 5.0 ppb (5) N/A 1.0 ppb (1) 39.0 ppb (30) 0.16 ppb (2) N/A -1.0 μg/m3 (0) 30.0
 
April 7, 2020, midnight N/A 1.1 ppb (1) 6.1 ppb (6) 5.0 ppb (5) N/A 1.0 ppb (1) 40.0 ppb (31) 0.15 ppb (2) N/A -2.0 μg/m3 (0) 31.0
 
April 6, 2020, 11 p.m. N/A 1.3 ppb (1) 5.7 ppb (5) 4.0 ppb (4) N/A 1.0 ppb (1) 40.0 ppb (31) 0.15 ppb (2) N/A -3.0 μg/m3 (0) 31.0
 
April 6, 2020, 10 p.m. N/A 1.4 ppb (1) 5.6 ppb (5) 4.0 ppb (4) N/A 1.0 ppb (1) 40.0 ppb (31) 0.15 ppb (2) N/A -3.0 μg/m3 (0) 31.0
 
April 6, 2020, 9 p.m. N/A 2.1 ppb (2) 7.1 ppb (7) 5.0 ppb (5) N/A 1.0 ppb (1) 38.0 ppb (29) 0.15 ppb (2) N/A -1.0 μg/m3 (0) 29.0
 
April 6, 2020, 8 p.m. N/A 2.9 ppb (3) 8.6 ppb (8) 6.0 ppb (6) N/A 1.0 ppb (1) 35.0 ppb (27) 0.15 ppb (2) N/A 1.0 μg/m3 (4) 27.0
 
April 6, 2020, 7 p.m. N/A 2.7 ppb (3) 8.0 ppb (7) 5.0 ppb (5) N/A 1.0 ppb (1) 34.0 ppb (26) 0.16 ppb (2) N/A 2.0 μg/m3 (8) 26.0
 
April 6, 2020, 6 p.m. N/A 5.5 ppb (5) 14.8 ppb (14) 10.0 ppb (9) N/A 1.0 ppb (1) 28.0 ppb (22) 0.18 ppb (2) N/A 3.0 μg/m3 (12) 22.0
 
April 6, 2020, 5 p.m. N/A 5.5 ppb (5) 14.6 ppb (14) 9.0 ppb (8) N/A 1.0 ppb (1) 23.0 ppb (18) 0.22 ppb (2) N/A 4.0 μg/m3 (17) 18.0
 
April 6, 2020, 4 p.m. N/A 4.7 ppb (4) 13.1 ppb (12) 8.0 ppb (7) N/A 1.0 ppb (1) 21.0 ppb (16) 0.23 ppb (3) N/A 4.0 μg/m3 (17) 17.0
 
April 6, 2020, 3 p.m. N/A 4.0 ppb (4) 15.1 ppb (14) 11.0 ppb (10) N/A 1.0 ppb (1) 17.0 ppb (13) 0.22 ppb (2) N/A 5.0 μg/m3 (21) 21.0
 
April 6, 2020, 2 p.m. N/A 1.3 ppb (1) 14.4 ppb (13) 13.0 ppb (12) N/A 1.0 ppb (1) 20.0 ppb (15) 0.21 ppb (2) N/A 5.0 μg/m3 (21) 21.0
 
April 6, 2020, 1 p.m. N/A 0.5 ppb (0) 15.5 ppb (14) 14.0 ppb (13) N/A 1.0 ppb (1) 21.0 ppb (16) 0.2 ppb (2) N/A 2.0 μg/m3 (8) 16.0
 
April 6, 2020, noon N/A 0.1 ppb (0) 6.8 ppb (6) 6.0 ppb (6) N/A 1.0 ppb (1) 28.0 ppb (22) 0.18 ppb (2) N/A 4.0 μg/m3 (17) 22.0
 
April 6, 2020, 11 a.m. N/A 0.0 ppb (0) 3.4 ppb (3) 3.0 ppb (3) N/A 1.0 ppb (1) 31.0 ppb (24) 0.17 ppb (2) N/A 5.0 μg/m3 (21) 24.0
 
April 6, 2020, 10 a.m. N/A 0.0 ppb (0) 3.5 ppb (3) 3.0 ppb (3) N/A 1.0 ppb (1) 30.0 ppb (23) 0.18 ppb (2) N/A 3.0 μg/m3 (12) 23.0
 
April 6, 2020, 9 a.m. N/A 0.0 ppb (0) 4.1 ppb (4) 4.0 ppb (4) N/A 1.0 ppb (1) 29.0 ppb (22) 0.18 ppb (2) N/A 5.0 μg/m3 (21) 22.0
 
April 6, 2020, 8 a.m. N/A 0.0 ppb (0) 4.1 ppb (4) 4.0 ppb (4) N/A 1.0 ppb (1) 30.0 ppb (23) 0.18 ppb (2) N/A 5.0 μg/m3 (21) 23.0
 
April 6, 2020, 7 a.m. N/A 0.0 ppb (0) 3.0 ppb (3) 3.0 ppb (3) N/A 1.0 ppb (1) 32.0 ppb (25) 0.18 ppb (2) N/A 3.0 μg/m3 (12) 25.0
 
April 6, 2020, 6 a.m. N/A 0.0 ppb (0) 4.0 ppb (4) 4.0 ppb (4) N/A 1.0 ppb (1) 32.0 ppb (25) 0.19 ppb (2) N/A 6.0 μg/m3 (25) 25.0
 
April 6, 2020, 5 a.m. N/A 0.0 ppb (0) 5.1 ppb (5) 5.0 ppb (5) N/A 1.0 ppb (1) 32.0 ppb (25) 0.19 ppb (2) N/A 4.0 μg/m3 (17) 25.0
 
April 6, 2020, 4 a.m. N/A 0.0 ppb (0) 4.8 ppb (4) 4.0 ppb (4) N/A 1.0 ppb (1) 32.0 ppb (25) 0.19 ppb (2) N/A 4.0 μg/m3 (17) 25.0
 
April 6, 2020, 3 a.m. N/A 0.1 ppb (0) 5.4 ppb (5) 5.0 ppb (5) N/A 1.0 ppb (1) 31.0 ppb (24) 0.2 ppb (2) N/A 4.0 μg/m3 (17) 24.0
 
April 6, 2020, 2 a.m. N/A 0.1 ppb (0) 5.6 ppb (5) 5.0 ppb (5) N/A 1.0 ppb (1) 32.0 ppb (25) 0.19 ppb (2) N/A 3.0 μg/m3 (12) 25.0
 
April 6, 2020, 1 a.m. N/A 0.3 ppb (0) 4.6 ppb (4) 4.0 ppb (4) N/A 1.0 ppb (1) 34.0 ppb (26) 0.17 ppb (2) N/A 2.0 μg/m3 (8) 26.0
 
April 6, 2020, midnight N/A 0.5 ppb (0) 4.6 ppb (4) 4.0 ppb (4) N/A 1.0 ppb (1) 35.0 ppb (27) 0.17 ppb (2) N/A -2.0 μg/m3 (0) 27.0
 
April 5, 2020, 11 p.m. N/A 0.5 ppb (0) 4.2 ppb (4) 3.0 ppb (3) N/A 1.0 ppb (1) 37.0 ppb (28) 0.15 ppb (2) N/A -2.0 μg/m3 (0) 28.0
 
April 5, 2020, 10 p.m. N/A 1.2 ppb (1) 4.5 ppb (4) 3.0 ppb (3) N/A 1.0 ppb (1) 37.0 ppb (28) 0.16 ppb (2) N/A -1.0 μg/m3 (0) 28.0
 
April 5, 2020, 9 p.m. N/A 4.2 ppb (4) 11.4 ppb (11) 7.0 ppb (6) N/A 1.0 ppb (1) 29.0 ppb (22) 0.16 ppb (2) N/A 3.0 μg/m3 (12) 22.0
 
April 5, 2020, 8 p.m. N/A 4.4 ppb (4) 11.6 ppb (11) 8.0 ppb (7) N/A 1.0 ppb (1) 27.0 ppb (21) 0.16 ppb (2) N/A 3.0 μg/m3 (12) 21.0
 
April 5, 2020, 7 p.m. N/A 1.8 ppb (2) 5.5 ppb (5) 4.0 ppb (4) N/A 1.0 ppb (1) 28.0 ppb (22) 0.17 ppb (2) N/A 0.0 μg/m3 (0) 22.0
 
April 5, 2020, 6 p.m. N/A 1.1 ppb (1) 3.5 ppb (3) 2.0 ppb (2) N/A 1.0 ppb (1) 27.0 ppb (21) 0.16 ppb (2) N/A 0.0 μg/m3 (0) 21.0
 
April 5, 2020, 5 p.m. N/A 0.9 ppb (1) 2.9 ppb (3) 2.0 ppb (2) N/A 1.0 ppb (1) 28.0 ppb (22) 0.17 ppb (2) N/A 2.0 μg/m3 (8) 22.0
 
April 5, 2020, 4 p.m. N/A 1.1 ppb (1) 6.1 ppb (6) 5.0 ppb (5) N/A 1.0 ppb (1) 26.0 ppb (20) 0.18 ppb (2) N/A 3.0 μg/m3 (12) 20.0
 
April 5, 2020, 3 p.m. N/A 0.7 ppb (1) 6.0 ppb (6) 5.0 ppb (5) N/A 1.0 ppb (1) 26.0 ppb (20) 0.17 ppb (2) N/A 3.0 μg/m3 (12) 20.0
 
April 5, 2020, 2 p.m. N/A 0.2 ppb (0) 5.2 ppb (5) 5.0 ppb (5) N/A 1.0 ppb (1) 27.0 ppb (21) 0.17 ppb (2) N/A 1.0 μg/m3 (4) 21.0
 
April 5, 2020, 1 p.m. N/A 0.1 ppb (0) 4.2 ppb (4) 4.0 ppb (4) N/A 1.0 ppb (1) 29.0 ppb (22) 0.17 ppb (2) N/A 0.0 μg/m3 (0) 22.0
 
April 5, 2020, noon N/A 0.1 ppb (0) 3.7 ppb (3) 3.0 ppb (3) N/A 1.0 ppb (1) 30.0 ppb (23) 0.17 ppb (2) N/A 0.0 μg/m3 (0) 23.0
 
April 5, 2020, 11 a.m. N/A 0.0 ppb (0) 3.9 ppb (4) 4.0 ppb (4) N/A 1.0 ppb (1) 29.0 ppb (22) 0.17 ppb (2) N/A 2.0 μg/m3 (8) 22.0
 
April 5, 2020, 10 a.m. N/A 0.0 ppb (0) 4.1 ppb (4) 4.0 ppb (4) N/A 1.0 ppb (1) 29.0 ppb (22) 0.18 ppb (2) N/A 1.0 μg/m3 (4) 22.0
 
April 5, 2020, 9 a.m. N/A 0.0 ppb (0) 5.0 ppb (5) 5.0 ppb (5) N/A 1.0 ppb (1) 28.0 ppb (22) 0.18 ppb (2) N/A 1.0 μg/m3 (4) 22.0
 
April 5, 2020, 8 a.m. N/A 0.0 ppb (0) 4.6 ppb (4) 4.0 ppb (4) N/A 1.0 ppb (1) 30.0 ppb (23) 0.19 ppb (2) N/A 5.0 μg/m3 (21) 23.0
 
April 5, 2020, 7 a.m. N/A 0.0 ppb (0) 4.3 ppb (4) 4.0 ppb (4) N/A 1.0 ppb (1) 31.0 ppb (24) 0.19 ppb (2) N/A 3.0 μg/m3 (12) 24.0
 
April 5, 2020, 6 a.m. N/A 0.1 ppb (0) 3.5 ppb (3) 3.0 ppb (3) N/A 1.0 ppb (1) 33.0 ppb (25) 0.2 ppb (2) N/A 1.0 μg/m3 (4) 25.0
 
April 5, 2020, 5 a.m. N/A 0.0 ppb (0) 4.1 ppb (4) 4.0 ppb (4) N/A 1.0 ppb (1) 33.0 ppb (25) 0.2 ppb (2) N/A 4.0 μg/m3 (17) 25.0
 
April 5, 2020, 4 a.m. N/A 0.0 ppb (0) 4.4 ppb (4) 4.0 ppb (4) N/A 1.0 ppb (1) 33.0 ppb (25) 0.19 ppb (2) N/A 6.0 μg/m3 (25) 25.0
 
April 5, 2020, 3 a.m. N/A 0.1 ppb (0) 4.9 ppb (5) 5.0 ppb (5) N/A 1.0 ppb (1) 34.0 ppb (26) 0.2 ppb (2) N/A 3.0 μg/m3 (12) 26.0
 
April 5, 2020, 2 a.m. N/A 0.1 ppb (0) 4.0 ppb (4) 4.0 ppb (4) N/A 1.0 ppb (1) 36.0 ppb (28) 0.19 ppb (2) N/A 3.0 μg/m3 (12) 28.0
 
April 5, 2020, 1 a.m. N/A 0.3 ppb (0) 3.7 ppb (3) 3.0 ppb (3) N/A 1.0 ppb (1) 37.0 ppb (28) 0.17 ppb (2) N/A 3.0 μg/m3 (12) 28.0
 
April 5, 2020, midnight N/A 0.6 ppb (1) 3.5 ppb (3) 3.0 ppb (3) N/A 1.0 ppb (1) 38.0 ppb (29) 0.16 ppb (2) N/A 0.0 μg/m3 (0) 29.0
 
April 4, 2020, 11 p.m. N/A 1.3 ppb (1) 5.6 ppb (5) 4.0 ppb (4) N/A 1.0 ppb (1) 35.0 ppb (27) 0.17 ppb (2) N/A 0.0 μg/m3 (0) 27.0
 
April 4, 2020, 10 p.m. N/A 0.8 ppb (1) 3.8 ppb (4) 3.0 ppb (3) N/A 1.0 ppb (1) 36.0 ppb (28) 0.17 ppb (2) N/A -2.0 μg/m3 (0) 28.0
 
April 4, 2020, 9 p.m. N/A 0.9 ppb (1) 3.0 ppb (3) 2.0 ppb (2) N/A 1.0 ppb (1) 37.0 ppb (28) 0.17 ppb (2) N/A -2.0 μg/m3 (0) 28.0
 
April 4, 2020, 8 p.m. N/A 2.9 ppb (3) 8.3 ppb (8) 6.0 ppb (6) N/A 1.0 ppb (1) 31.0 ppb (24) 0.18 ppb (2) N/A 1.0 μg/m3 (4) 24.0
 
April 4, 2020, 7 p.m. N/A 4.8 ppb (4) 12.6 ppb (12) 8.0 ppb (7) N/A 1.0 ppb (1) 27.0 ppb (21) 0.18 ppb (2) N/A 1.0 μg/m3 (4) 21.0
 
April 4, 2020, 6 p.m. N/A 5.8 ppb (5) 12.8 ppb (12) 8.0 ppb (7) N/A 1.0 ppb (1) 26.0 ppb (20) 0.18 ppb (2) N/A 0.0 μg/m3 (0) 20.0
 
April 4, 2020, 5 p.m. N/A 0.8 ppb (1) 2.5 ppb (2) 2.0 ppb (2) N/A 1.0 ppb (1) 31.0 ppb (24) 0.17 ppb (2) N/A 2.0 μg/m3 (8) 24.0
 
April 4, 2020, 4 p.m. N/A 2.7 ppb (3) 7.2 ppb (7) 5.0 ppb (5) N/A 1.0 ppb (1) 18.0 ppb (14) 0.18 ppb (2) N/A 4.0 μg/m3 (17) 17.0
 
April 4, 2020, 3 p.m. N/A 2.7 ppb (3) 9.9 ppb (9) 7.0 ppb (6) N/A 1.0 ppb (1) 14.0 ppb (11) 0.19 ppb (2) N/A 0.0 μg/m3 (0) 11.0
 
April 4, 2020, 2 p.m. N/A 1.0 ppb (1) 8.2 ppb (8) 8.0 ppb (7) N/A 1.0 ppb (1) 14.0 ppb (11) 0.17 ppb (2) N/A 0.0 μg/m3 (0) 11.0
 
April 4, 2020, 1 p.m. N/A 0.1 ppb (0) 3.3 ppb (3) 3.0 ppb (3) N/A 1.0 ppb (1) 22.0 ppb (17) 0.16 ppb (2) N/A 0.0 μg/m3 (0) 17.0
 
April 4, 2020, noon N/A 0.1 ppb (0) 4.3 ppb (4) 5.0 ppb (5) N/A 0.0 ppb (0) 22.0 ppb (17) 0.16 ppb (2) N/A 1.0 μg/m3 (4) 17.0
 
April 4, 2020, 11 a.m. N/A 0.1 ppb (0) 2.9 ppb (3) 3.0 ppb (3) N/A 1.0 ppb (1) 25.0 ppb (19) 0.17 ppb (2) N/A 4.0 μg/m3 (17) 19.0
 
April 4, 2020, 10 a.m. N/A 0.1 ppb (0) 4.0 ppb (4) 4.0 ppb (4) N/A 1.0 ppb (1) N/A 0.18 ppb (2) N/A 6.0 μg/m3 (25) 25.0
 
April 4, 2020, 9 a.m. N/A 0.0 ppb (0) 4.3 ppb (4) 4.0 ppb (4) N/A 1.0 ppb (1) 25.0 ppb (19) 0.19 ppb (2) N/A 6.0 μg/m3 (25) 25.0
 
April 4, 2020, 8 a.m. N/A 0.1 ppb (0) 4.8 ppb (4) 5.0 ppb (5) N/A 1.0 ppb (1) 25.0 ppb (19) 0.2 ppb (2) N/A 6.0 μg/m3 (25) 25.0
 
April 4, 2020, 7 a.m. N/A 0.2 ppb (0) 6.6 ppb (6) 6.0 ppb (6) N/A 1.0 ppb (1) 23.0 ppb (18) 0.19 ppb (2) N/A 4.0 μg/m3 (17) 18.0
 
April 4, 2020, 6 a.m. N/A 0.1 ppb (0) 5.3 ppb (5) 5.0 ppb (5) N/A 1.0 ppb (1) 27.0 ppb (21) 0.18 ppb (2) N/A 4.0 μg/m3 (17) 21.0
 
April 4, 2020, 5 a.m. N/A 0.1 ppb (0) 2.7 ppb (3) 3.0 ppb (3) N/A 1.0 ppb (1) 30.0 ppb (23) 0.17 ppb (2) N/A 1.0 μg/m3 (4) 23.0
 
April 4, 2020, 4 a.m. N/A 0.1 ppb (0) 1.9 ppb (2) 2.0 ppb (2) N/A 1.0 ppb (1) 32.0 ppb (25) 0.17 ppb (2) N/A 2.0 μg/m3 (8) 25.0
 
April 4, 2020, 3 a.m. N/A 0.1 ppb (0) 2.6 ppb (2) 2.0 ppb (2) N/A 1.0 ppb (1) 31.0 ppb (24) 0.17 ppb (2) N/A 1.0 μg/m3 (4) 24.0
 
April 4, 2020, 2 a.m. N/A 0.1 ppb (0) 2.1 ppb (2) 2.0 ppb (2) N/A 1.0 ppb (1) 35.0 ppb (27) 0.16 ppb (2) N/A 1.0 μg/m3 (4) 27.0
 
April 4, 2020, 1 a.m. N/A 0.3 ppb (0) 2.2 ppb (2) 2.0 ppb (2) N/A 1.0 ppb (1) 35.0 ppb (27) 0.17 ppb (2) N/A 1.0 μg/m3 (4) 27.0
 
April 4, 2020, midnight N/A 0.9 ppb (1) 4.6 ppb (4) 4.0 ppb (4) N/A 1.0 ppb (1) 32.0 ppb (25) 0.17 ppb (2) N/A 2.0 μg/m3 (8) 25.0
 
April 3, 2020, 11 p.m. N/A 0.9 ppb (1) 5.6 ppb (5) 5.0 ppb (5) N/A 1.0 ppb (1) 32.0 ppb (25) 0.16 ppb (2) N/A 3.0 μg/m3 (12) 25.0
 
April 3, 2020, 10 p.m. N/A 0.8 ppb (1) 3.4 ppb (3) 2.0 ppb (2) N/A 1.0 ppb (1) 35.0 ppb (27) 0.17 ppb (2) N/A 2.0 μg/m3 (8) 27.0
 
April 3, 2020, 9 p.m. N/A 0.7 ppb (1) 2.2 ppb (2) 1.0 ppb (1) N/A 1.0 ppb (1) 36.0 ppb (28) 0.16 ppb (2) N/A 1.0 μg/m3 (4) 28.0
 
April 3, 2020, 8 p.m. N/A 0.8 ppb (1) 2.2 ppb (2) 1.0 ppb (1) N/A 1.0 ppb (1) 36.0 ppb (28) 0.16 ppb (2) N/A 2.0 μg/m3 (8) 28.0
 
April 3, 2020, 7 p.m. N/A 1.0 ppb (1) 2.8 ppb (3) 2.0 ppb (2) N/A 1.0 ppb (1) 34.0 ppb (26) 0.18 ppb (2) N/A 3.0 μg/m3 (12) 26.0
 
April 3, 2020, 6 p.m. N/A 1.1 ppb (1) 3.3 ppb (3) 2.0 ppb (2) N/A 1.0 ppb (1) 32.0 ppb (25) 0.16 ppb (2) N/A 1.0 μg/m3 (4) 25.0
 
April 3, 2020, 5 p.m. N/A 1.3 ppb (1) 4.3 ppb (4) 3.0 ppb (3) N/A 1.0 ppb (1) 30.0 ppb (23) 0.16 ppb (2) N/A -1.0 μg/m3 (0) 23.0
 
April 3, 2020, 4 p.m. N/A 1.0 ppb (1) 3.9 ppb (4) 3.0 ppb (3) N/A 1.0 ppb (1) 30.0 ppb (23) 0.16 ppb (2) N/A 0.0 μg/m3 (0) 23.0
 
April 3, 2020, 3 p.m. N/A 0.9 ppb (1) 5.1 ppb (5) 4.0 ppb (4) N/A 1.0 ppb (1) 28.0 ppb (22) 0.16 ppb (2) N/A 1.0 μg/m3 (4) 22.0
 
April 3, 2020, 2 p.m. N/A 0.8 ppb (1) 6.7 ppb (6) 6.0 ppb (6) N/A 1.0 ppb (1) 27.0 ppb (21) 0.16 ppb (2) N/A 1.0 μg/m3 (4) 21.0
 
April 3, 2020, 1 p.m. N/A 0.2 ppb (0) 4.0 ppb (4) 4.0 ppb (4) N/A 0.0 ppb (0) 29.0 ppb (22) 0.15 ppb (2) N/A 1.0 μg/m3 (4) 22.0
 
April 3, 2020, noon N/A 0.1 ppb (0) 2.6 ppb (2) 3.0 ppb (3) N/A 0.0 ppb (0) 29.0 ppb (22) 0.15 ppb (2) N/A -1.0 μg/m3 (0) 22.0
 
April 3, 2020, 11 a.m. N/A 0.0 ppb (0) 2.6 ppb (2) 3.0 ppb (3) N/A 0.0 ppb (0) 30.0 ppb (23) 0.15 ppb (2) N/A 0.0 μg/m3 (0) 23.0
 
April 3, 2020, 10 a.m. N/A 0.0 ppb (0) 3.1 ppb (3) 3.0 ppb (3) N/A 1.0 ppb (1) 28.0 ppb (22) 0.16 ppb (2) N/A 2.0 μg/m3 (8) 22.0
 
April 3, 2020, 9 a.m. N/A 0.1 ppb (0) 4.3 ppb (4) 4.0 ppb (4) N/A 1.0 ppb (1) 28.0 ppb (22) 0.16 ppb (2) N/A 4.0 μg/m3 (17) 22.0
 
April 3, 2020, 8 a.m. N/A 0.1 ppb (0) 1.6 ppb (1) 1.0 ppb (1) N/A 0.0 ppb (0) 33.0 ppb (25) 0.15 ppb (2) N/A 3.0 μg/m3 (12) 25.0
 
April 3, 2020, 7 a.m. N/A 0.0 ppb (0) 1.3 ppb (1) 1.0 ppb (1) N/A 0.0 ppb (0) 34.0 ppb (26) 0.16 ppb (2) N/A 3.0 μg/m3 (12) 26.0
 
April 3, 2020, 6 a.m. N/A 0.0 ppb (0) 1.5 ppb (1) 1.0 ppb (1) N/A 1.0 ppb (1) 33.0 ppb (25) 0.16 ppb (2) N/A 5.0 μg/m3 (21) 25.0
 
April 3, 2020, 5 a.m. N/A 0.1 ppb (0) 1.6 ppb (1) 2.0 ppb (2) N/A 0.0 ppb (0) 33.0 ppb (25) 0.16 ppb (2) N/A 2.0 μg/m3 (8) 25.0
 
April 3, 2020, 4 a.m. N/A 0.1 ppb (0) 5.1 ppb (5) 5.0 ppb (5) N/A 1.0 ppb (1) 30.0 ppb (23) 0.17 ppb (2) N/A 3.0 μg/m3 (12) 23.0
 
April 3, 2020, 3 a.m. N/A 0.1 ppb (0) 7.7 ppb (7) 8.0 ppb (7) N/A 1.0 ppb (1) 28.0 ppb (22) 0.17 ppb (2) N/A 5.0 μg/m3 (21) 22.0
 
April 3, 2020, 2 a.m. N/A 0.1 ppb (0) 2.2 ppb (2) 2.0 ppb (2) N/A 1.0 ppb (1) 33.0 ppb (25) 0.16 ppb (2) N/A 3.0 μg/m3 (12) 25.0
 
April 3, 2020, 1 a.m. N/A 0.2 ppb (0) 2.2 ppb (2) 2.0 ppb (2) N/A 0.0 ppb (0) 34.0 ppb (26) 0.16 ppb (2) N/A 0.0 μg/m3 (0) 26.0
 
April 3, 2020, midnight N/A 0.4 ppb (0) 1.9 ppb (2) 1.0 ppb (1) N/A 0.0 ppb (0) 36.0 ppb (28) 0.16 ppb (2) N/A 0.0 μg/m3 (0) 28.0
 
April 2, 2020, 11 p.m. N/A 0.6 ppb (1) 2.4 ppb (2) 2.0 ppb (2) N/A 1.0 ppb (1) 35.0 ppb (27) 0.16 ppb (2) N/A -2.0 μg/m3 (0) 27.0
 
April 2, 2020, 10 p.m. N/A 0.6 ppb (1) 2.0 ppb (2) 1.0 ppb (1) N/A 1.0 ppb (1) 36.0 ppb (28) 0.16 ppb (2) N/A -3.0 μg/m3 (0) 28.0
 
April 2, 2020, 9 p.m. N/A 0.5 ppb (0) 2.0 ppb (2) 1.0 ppb (1) N/A 1.0 ppb (1) 36.0 ppb (28) 0.16 ppb (2) N/A -4.0 μg/m3 (0) 28.0
 
April 2, 2020, 8 p.m. N/A 2.9 ppb (3) 6.2 ppb (6) 2.0 ppb (2) N/A 1.0 ppb (1) 36.0 ppb (28) 0.16 ppb (2) N/A -3.0 μg/m3 (0) 28.0
 
April 2, 2020, 7 p.m. N/A 0.7 ppb (1) 2.4 ppb (2) 2.0 ppb (2) N/A 1.0 ppb (1) 35.0 ppb (27) 0.17 ppb (2) N/A -1.0 μg/m3 (0) 27.0
 
April 2, 2020, 6 p.m. N/A 0.8 ppb (1) 3.2 ppb (3) 2.0 ppb (2) N/A 1.0 ppb (1) 31.0 ppb (24) 0.19 ppb (2) N/A 2.0 μg/m3 (8) 24.0
 
April 2, 2020, 5 p.m. N/A 5.7 ppb (5) 14.7 ppb (14) 9.0 ppb (8) N/A 1.0 ppb (1) 17.0 ppb (13) 0.24 ppb (3) N/A 4.0 μg/m3 (17) 17.0
 
April 2, 2020, 4 p.m. N/A 9.7 ppb (9) 21.9 ppb (20) 13.0 ppb (12) N/A 1.0 ppb (1) 10.0 ppb (8) 0.26 ppb (3) N/A 4.0 μg/m3 (17) 20.0
 
April 2, 2020, 3 p.m. N/A 7.3 ppb (7) 19.5 ppb (18) 13.0 ppb (12) N/A 1.0 ppb (1) 8.0 ppb (6) 0.27 ppb (3) N/A 2.0 μg/m3 (8) 18.0
 
April 2, 2020, 2 p.m. N/A 5.6 ppb (5) 18.2 ppb (17) 13.0 ppb (12) N/A 1.0 ppb (1) 7.0 ppb (5) 0.22 ppb (2) N/A 3.0 μg/m3 (12) 17.0
 
April 2, 2020, 1 p.m. N/A 1.8 ppb (2) 9.9 ppb (9) 8.0 ppb (7) N/A 1.0 ppb (1) 11.0 ppb (8) 0.2 ppb (2) N/A 4.0 μg/m3 (17) 17.0
 
April 2, 2020, noon N/A 0.5 ppb (0) 8.7 ppb (8) 8.0 ppb (7) N/A 1.0 ppb (1) 10.0 ppb (8) 0.22 ppb (2) N/A 5.0 μg/m3 (21) 21.0
 
April 2, 2020, 11 a.m. N/A 2.9 ppb (3) 17.4 ppb (16) 15.0 ppb (14) N/A 1.0 ppb (1) 6.0 ppb (5) 0.25 ppb (3) N/A 7.0 μg/m3 (29) 29.0
 
April 2, 2020, 10 a.m. N/A 0.8 ppb (1) 13.7 ppb (13) 13.0 ppb (12) N/A 1.0 ppb (1) 9.0 ppb (7) 0.26 ppb (3) N/A 8.0 μg/m3 (33) 33.0
 
April 2, 2020, 9 a.m. N/A 1.7 ppb (2) 18.5 ppb (17) 18.0 ppb (17) N/A 1.0 ppb (1) 8.0 ppb (6) 0.26 ppb (3) N/A 7.0 μg/m3 (29) 29.0
 
April 2, 2020, 8 a.m. N/A 1.8 ppb (2) 16.8 ppb (16) 15.0 ppb (14) N/A 1.0 ppb (1) 12.0 ppb (9) 0.27 ppb (3) N/A 6.0 μg/m3 (25) 25.0
 
April 2, 2020, 7 a.m. N/A 0.4 ppb (0) 11.2 ppb (10) 11.0 ppb (10) N/A 1.0 ppb (1) 21.0 ppb (16) 0.28 ppb (3) N/A 3.0 μg/m3 (12) 16.0
 
April 2, 2020, 6 a.m. N/A 0.9 ppb (1) 7.7 ppb (7) 6.0 ppb (6) N/A 1.0 ppb (1) 30.0 ppb (23) 0.26 ppb (3) N/A 1.0 μg/m3 (4) 23.0
 
April 2, 2020, 5 a.m. N/A 0.0 ppb (0) 7.4 ppb (7) 7.0 ppb (6) N/A 1.0 ppb (1) 27.0 ppb (21) 0.19 ppb (2) N/A 4.0 μg/m3 (17) 21.0
 
April 2, 2020, 4 a.m. N/A 0.1 ppb (0) 9.1 ppb (8) 9.0 ppb (8) N/A 1.0 ppb (1) 28.0 ppb (22) 0.18 ppb (2) N/A 5.0 μg/m3 (21) 22.0
 
April 2, 2020, 3 a.m. N/A 0.0 ppb (0) 6.2 ppb (6) 6.0 ppb (6) N/A 1.0 ppb (1) 32.0 ppb (25) 0.18 ppb (2) N/A 6.0 μg/m3 (25) 25.0
 
April 2, 2020, 2 a.m. N/A 0.1 ppb (0) 3.1 ppb (3) 3.0 ppb (3) N/A 1.0 ppb (1) 36.0 ppb (28) 0.16 ppb (2) N/A 2.0 μg/m3 (8) 28.0
 
April 2, 2020, 1 a.m. N/A 0.4 ppb (0) 2.7 ppb (3) 2.0 ppb (2) N/A 1.0 ppb (1) 38.0 ppb (29) 0.16 ppb (2) N/A 0.0 μg/m3 (0) 29.0
 
April 2, 2020, midnight N/A 0.5 ppb (0) 2.6 ppb (2) 2.0 ppb (2) N/A 1.0 ppb (1) 40.0 ppb (31) 0.16 ppb (2) N/A 1.0 μg/m3 (4) 31.0
 
April 1, 2020, 11 p.m. N/A 0.5 ppb (0) 1.9 ppb (2) 1.0 ppb (1) N/A 1.0 ppb (1) 40.0 ppb (31) 0.16 ppb (2) N/A 1.0 μg/m3 (4) 31.0
 
April 1, 2020, 10 p.m. N/A 1.6 ppb (1) 4.8 ppb (4) 3.0 ppb (3) N/A 1.0 ppb (1) 37.0 ppb (28) 0.16 ppb (2) N/A -1.0 μg/m3 (0) 28.0
 
April 1, 2020, 9 p.m. N/A 2.1 ppb (2) 5.8 ppb (5) 4.0 ppb (4) N/A 1.0 ppb (1) 34.0 ppb (26) 0.16 ppb (2) N/A 0.0 μg/m3 (0) 26.0
 
April 1, 2020, 8 p.m. N/A 2.0 ppb (2) 5.4 ppb (5) 4.0 ppb (4) N/A 1.0 ppb (1) 34.0 ppb (26) 0.16 ppb (2) N/A 1.0 μg/m3 (4) 26.0
 
April 1, 2020, 7 p.m. N/A 2.3 ppb (2) 5.8 ppb (5) 4.0 ppb (4) N/A 1.0 ppb (1) 32.0 ppb (25) 0.16 ppb (2) N/A 2.0 μg/m3 (8) 25.0
 
April 1, 2020, 6 p.m. N/A 5.2 ppb (5) 15.8 ppb (15) 11.0 ppb (10) N/A 1.0 ppb (1) 23.0 ppb (18) 0.18 ppb (2) N/A 3.0 μg/m3 (12) 18.0
 
April 1, 2020, 5 p.m. N/A 3.9 ppb (4) 16.5 ppb (15) 13.0 ppb (12) N/A 1.0 ppb (1) 21.0 ppb (16) 0.19 ppb (2) N/A 3.0 μg/m3 (12) 16.0
 
April 1, 2020, 4 p.m. N/A 4.8 ppb (4) 19.5 ppb (18) 16.0 ppb (15) N/A 1.0 ppb (1) 18.0 ppb (14) 0.19 ppb (2) N/A 1.0 μg/m3 (4) 18.0
 
April 1, 2020, 3 p.m. N/A 1.4 ppb (1) 8.8 ppb (8) 7.0 ppb (6) N/A 1.0 ppb (1) 24.0 ppb (18) 0.18 ppb (2) N/A 0.0 μg/m3 (0) 18.0
 
April 1, 2020, 2 p.m. N/A 0.9 ppb (1) 13.0 ppb (12) 13.0 ppb (12) N/A 1.0 ppb (1) 18.0 ppb (14) 0.2 ppb (2) N/A 3.0 μg/m3 (12) 14.0
 
April 1, 2020, 1 p.m. N/A 0.3 ppb (0) 11.9 ppb (11) 12.0 ppb (11) N/A 1.0 ppb (1) 18.0 ppb (14) 0.19 ppb (2) N/A 4.0 μg/m3 (17) 17.0
 
April 1, 2020, noon N/A 0.1 ppb (0) 7.0 ppb (6) 7.0 ppb (6) N/A 0.0 ppb (0) 24.0 ppb (18) 0.16 ppb (2) N/A 4.0 μg/m3 (17) 18.0
 
April 1, 2020, 11 a.m. N/A 0.0 ppb (0) 4.9 ppb (5) 5.0 ppb (5) N/A 0.0 ppb (0) 26.0 ppb (20) 0.16 ppb (2) N/A 3.0 μg/m3 (12) 20.0
 
April 1, 2020, 10 a.m. N/A 0.0 ppb (0) 4.2 ppb (4) 4.0 ppb (4) N/A 0.0 ppb (0) N/A 0.16 ppb (2) N/A 2.0 μg/m3 (8) 8.0
 
April 1, 2020, 9 a.m. N/A 0.0 ppb (0) 4.1 ppb (4) 4.0 ppb (4) N/A 1.0 ppb (1) 29.0 ppb (22) 0.16 ppb (2) N/A 2.0 μg/m3 (8) 22.0
 
April 1, 2020, 8 a.m. N/A 0.1 ppb (0) 4.2 ppb (4) 4.0 ppb (4) N/A 1.0 ppb (1) 30.0 ppb (23) 0.16 ppb (2) N/A 1.0 μg/m3 (4) 23.0
 
April 1, 2020, 7 a.m. N/A 0.7 ppb (1) 11.9 ppb (11) 12.0 ppb (11) N/A N/A 23.0 ppb (18) 0.19 ppb (2) N/A 1.0 μg/m3 (4) 18.0
 
April 1, 2020, 6 a.m. N/A 0.2 ppb (0) 8.3 ppb (8) 9.0 ppb (8) N/A N/A 26.0 ppb (20) 0.19 ppb (2) N/A 2.0 μg/m3 (8) 20.0
 
April 1, 2020, 5 a.m. N/A 0.2 ppb (0) 7.4 ppb (7) 7.0 ppb (6) N/A 0.0 ppb (0) 29.0 ppb (22) 0.18 ppb (2) N/A 2.0 μg/m3 (8) 22.0
 
April 1, 2020, 4 a.m. N/A 0.1 ppb (0) 4.1 ppb (4) 4.0 ppb (4) N/A 0.0 ppb (0) 31.0 ppb (24) 0.18 ppb (2) N/A 0.0 μg/m3 (0) 24.0
 
April 1, 2020, 3 a.m. N/A 0.1 ppb (0) 2.6 ppb (2) 3.0 ppb (3) N/A 0.0 ppb (0) 36.0 ppb (28) 0.17 ppb (2) N/A -1.0 μg/m3 (0) 28.0
 
April 1, 2020, 2 a.m. N/A 0.1 ppb (0) 3.3 ppb (3) 3.0 ppb (3) N/A 0.0 ppb (0) 38.0 ppb (29) 0.17 ppb (2) N/A 4.0 μg/m3 (17) 29.0
 
April 1, 2020, 1 a.m. N/A 0.5 ppb (0) 4.8 ppb (4) 5.0 ppb (5) N/A 1.0 ppb (1) 36.0 ppb (28) 0.16 ppb (2) N/A 6.0 μg/m3 (25) 28.0
 
April 1, 2020, midnight N/A 0.2 ppb (0) 1.8 ppb (2) 2.0 ppb (2) N/A 0.0 ppb (0) 41.0 ppb (32) 0.16 ppb (2) N/A -1.0 μg/m3 (0) 32.0
 
March 31, 2020, 11 p.m. N/A 0.4 ppb (0) 1.8 ppb (2) 1.0 ppb (1) N/A N/A 40.0 ppb (31) 0.15 ppb (2) N/A -1.0 μg/m3 (0) 31.0
 
March 31, 2020, 10 p.m. N/A 0.4 ppb (0) 2.0 ppb (2) 1.0 ppb (1) N/A N/A 40.0 ppb (31) 0.15 ppb (2) N/A -2.0 μg/m3 (0) 31.0
 
March 31, 2020, 9 p.m. N/A 0.4 ppb (0) 1.5 ppb (1) 1.0 ppb (1) N/A 1.0 ppb (1) 40.0 ppb (31) 0.15 ppb (2) N/A -1.0 μg/m3 (0) 31.0
 
March 31, 2020, 8 p.m. N/A 0.5 ppb (0) 1.8 ppb (2) 1.0 ppb (1) N/A 1.0 ppb (1) 38.0 ppb (29) 0.15 ppb (2) N/A 0.0 μg/m3 (0) 29.0
 
March 31, 2020, 7 p.m. N/A 1.2 ppb (1) 3.4 ppb (3) 2.0 ppb (2) N/A 1.0 ppb (1) 35.0 ppb (27) 0.15 ppb (2) N/A -1.0 μg/m3 (0) 27.0
 
March 31, 2020, 6 p.m. N/A 1.0 ppb (1) 3.7 ppb (3) 3.0 ppb (3) N/A 1.0 ppb (1) 32.0 ppb (25) 0.15 ppb (2) N/A 1.0 μg/m3 (4) 25.0
 
March 31, 2020, 5 p.m. N/A 1.1 ppb (1) 5.4 ppb (5) 5.0 ppb (5) N/A 1.0 ppb (1) 29.0 ppb (22) 0.16 ppb (2) N/A 2.0 μg/m3 (8) 22.0
 
March 31, 2020, 4 p.m. N/A 0.7 ppb (1) 4.9 ppb (5) 5.0 ppb (5) N/A 1.0 ppb (1) 31.0 ppb (24) 0.15 ppb (2) N/A 1.0 μg/m3 (4) 24.0
 
March 31, 2020, 3 p.m. N/A 0.6 ppb (1) 7.9 ppb (7) 8.0 ppb (7) N/A 1.0 ppb (1) 27.0 ppb (21) 0.16 ppb (2) N/A 2.0 μg/m3 (8) 21.0
 
March 31, 2020, 2 p.m. N/A 0.7 ppb (1) 10.2 ppb (9) 10.0 ppb (9) N/A 1.0 ppb (1) 25.0 ppb (19) 0.17 ppb (2) N/A 2.0 μg/m3 (8) 19.0
 
March 31, 2020, 1 p.m. N/A 0.1 ppb (0) 5.5 ppb (5) 6.0 ppb (6) N/A 0.0 ppb (0) 29.0 ppb (22) 0.15 ppb (2) N/A 0.0 μg/m3 (0) 22.0
 
March 31, 2020, noon N/A 0.1 ppb (0) 3.8 ppb (4) 4.0 ppb (4) N/A 0.0 ppb (0) 31.0 ppb (24) 0.15 ppb (2) N/A 0.0 μg/m3 (0) 24.0