ID: 878

AQSQID: 510870014

Site Name: Math & Science Ctr

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

Updated: Sept. 20, 2020, 8:38 p.m.

Location: Richmond (Hartman St), VA

Reporting: True, Located: True

Current AQI: 29.0

Richmond (Hartman St) VA, US: 37.55652, -77.40027

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
Sept. 20, 2020, 7 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 38.0 ppb (29) 0.14 ppb (2) N/A 3.3 μg/m3 (14) 29.0
 
Sept. 20, 2020, 6 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 37.0 ppb (28) 0.14 ppb (2) N/A 3.2 μg/m3 (13) 28.0
 
Sept. 20, 2020, 5 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 36.0 ppb (28) 0.14 ppb (2) N/A 3.1 μg/m3 (13) 28.0
 
Sept. 20, 2020, 4 p.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 35.0 ppb (27) 0.14 ppb (2) N/A 3.3 μg/m3 (14) 27.0
 
Sept. 20, 2020, 3 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 33.0 ppb (25) 0.15 ppb (2) N/A 3.7 μg/m3 (15) 25.0
 
Sept. 20, 2020, 2 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 29.0 ppb (22) 0.17 ppb (2) N/A 3.9 μg/m3 (16) 22.0
 
Sept. 20, 2020, 1 p.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 22.0 ppb (17) 0.2 ppb (2) N/A 5.1 μg/m3 (21) 21.0
 
Sept. 20, 2020, noon N/A N/A N/A 4.0 ppb (4) N/A 0.0 ppb (0) 14.0 ppb (11) 0.22 ppb (2) N/A 6.4 μg/m3 (27) 27.0
 
Sept. 20, 2020, 11 a.m. N/A N/A N/A 5.0 ppb (5) N/A 0.0 ppb (0) 10.0 ppb (8) 0.21 ppb (2) N/A 6.4 μg/m3 (27) 27.0
 
Sept. 20, 2020, 10 a.m. N/A N/A N/A 5.0 ppb (5) N/A 0.0 ppb (0) 10.0 ppb (8) 0.2 ppb (2) N/A 5.9 μg/m3 (25) 25.0
 
Sept. 20, 2020, 9 a.m. N/A N/A N/A 5.0 ppb (5) N/A 0.0 ppb (0) 12.0 ppb (9) 0.19 ppb (2) N/A 5.1 μg/m3 (21) 21.0
 
Sept. 20, 2020, 8 a.m. N/A N/A N/A 6.0 ppb (6) N/A 0.0 ppb (0) 10.0 ppb (8) 0.19 ppb (2) N/A 4.9 μg/m3 (20) 20.0
 
Sept. 20, 2020, 7 a.m. N/A N/A N/A 7.0 ppb (6) N/A 0.0 ppb (0) 9.0 ppb (7) 0.18 ppb (2) N/A 5.0 μg/m3 (21) 21.0
 
Sept. 20, 2020, 6 a.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 12.0 ppb (9) 0.19 ppb (2) N/A 5.3 μg/m3 (22) 22.0
 
Sept. 20, 2020, 5 a.m. N/A N/A N/A 4.0 ppb (4) N/A 0.0 ppb (0) 15.0 ppb (12) 0.19 ppb (2) N/A 5.1 μg/m3 (21) 21.0
 
Sept. 20, 2020, 4 a.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 19.0 ppb (15) 0.18 ppb (2) N/A 4.2 μg/m3 (18) 18.0
 
Sept. 20, 2020, 3 a.m. N/A N/A N/A 4.0 ppb (4) N/A 0.0 ppb (0) 20.0 ppb (15) 0.19 ppb (2) N/A 4.7 μg/m3 (20) 20.0
 
Sept. 20, 2020, 2 a.m. N/A N/A N/A 6.0 ppb (6) N/A 0.0 ppb (0) 15.0 ppb (12) 0.25 ppb (3) N/A 7.0 μg/m3 (29) 29.0
 
Sept. 20, 2020, 1 a.m. N/A N/A N/A 9.0 ppb (8) N/A 0.0 ppb (0) 12.0 ppb (9) 0.32 ppb (4) N/A 13.0 μg/m3 (52) 52.0
 
Sept. 20, 2020, midnight N/A N/A N/A 7.0 ppb (6) N/A 0.0 ppb (0) 15.0 ppb (12) 0.25 ppb (3) N/A 6.3 μg/m3 (26) 26.0
 
Sept. 19, 2020, 11 p.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 22.0 ppb (17) 0.16 ppb (2) N/A 3.2 μg/m3 (13) 17.0
 
Sept. 19, 2020, 10 p.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 26.0 ppb (20) 0.16 ppb (2) N/A 3.0 μg/m3 (12) 20.0
 
Sept. 19, 2020, 9 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 32.0 ppb (25) 0.14 ppb (2) N/A 2.8 μg/m3 (12) 25.0
 
Sept. 19, 2020, 8 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 33.0 ppb (25) 0.13 ppb (1) N/A 2.7 μg/m3 (11) 25.0
 
Sept. 19, 2020, 7 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 32.0 ppb (25) 0.13 ppb (1) N/A 2.7 μg/m3 (11) 25.0
 
Sept. 19, 2020, 6 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 30.0 ppb (23) 0.13 ppb (1) N/A 2.6 μg/m3 (11) 23.0
 
Sept. 19, 2020, 5 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 29.0 ppb (22) 0.13 ppb (1) N/A 2.7 μg/m3 (11) 22.0
 
Sept. 19, 2020, 4 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 27.0 ppb (21) 0.12 ppb (1) N/A 2.6 μg/m3 (11) 21.0
 
Sept. 19, 2020, 3 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 25.0 ppb (19) 0.12 ppb (1) N/A 2.7 μg/m3 (11) 19.0
 
Sept. 19, 2020, 2 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 23.0 ppb (18) 0.12 ppb (1) N/A 2.7 μg/m3 (11) 18.0
 
Sept. 19, 2020, 1 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 23.0 ppb (18) 0.12 ppb (1) N/A 2.5 μg/m3 (10) 18.0
 
Sept. 19, 2020, noon N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 21.0 ppb (16) 0.13 ppb (1) N/A 2.5 μg/m3 (10) 16.0
 
Sept. 19, 2020, 11 a.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 22.0 ppb (17) 0.12 ppb (1) N/A 2.8 μg/m3 (12) 17.0
 
Sept. 19, 2020, 10 a.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 24.0 ppb (18) 0.12 ppb (1) N/A 2.7 μg/m3 (11) 18.0
 
Sept. 19, 2020, 9 a.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 25.0 ppb (19) 0.12 ppb (1) N/A 2.9 μg/m3 (12) 19.0
 
Sept. 19, 2020, 8 a.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 25.0 ppb (19) 0.12 ppb (1) N/A 3.2 μg/m3 (13) 19.0
 
Sept. 19, 2020, 7 a.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 26.0 ppb (20) 0.13 ppb (1) N/A 3.7 μg/m3 (15) 20.0
 
Sept. 19, 2020, 6 a.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 23.0 ppb (18) 0.15 ppb (2) N/A 5.6 μg/m3 (23) 23.0
 
Sept. 19, 2020, 5 a.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 22.0 ppb (17) 0.18 ppb (2) N/A 8.1 μg/m3 (34) 34.0
 
Sept. 19, 2020, 4 a.m. N/A N/A N/A 4.0 ppb (4) N/A 0.0 ppb (0) 22.0 ppb (17) 0.19 ppb (2) N/A 10.0 μg/m3 (42) 42.0
 
Sept. 19, 2020, 3 a.m. N/A N/A N/A 5.0 ppb (5) N/A 0.0 ppb (0) 22.0 ppb (17) 0.22 ppb (2) N/A 13.5 μg/m3 (53) 53.0
 
Sept. 19, 2020, 2 a.m. N/A N/A N/A 5.0 ppb (5) N/A 0.0 ppb (0) 25.0 ppb (19) 0.24 ppb (3) N/A 15.0 μg/m3 (56) 56.0
 
Sept. 19, 2020, 1 a.m. N/A N/A N/A 5.0 ppb (5) N/A 0.0 ppb (0) 25.0 ppb (19) 0.26 ppb (3) N/A 17.2 μg/m3 (61) 61.0
 
Sept. 19, 2020, midnight N/A N/A N/A 7.0 ppb (6) N/A 0.0 ppb (0) 24.0 ppb (18) 0.28 ppb (3) N/A 16.3 μg/m3 (59) 59.0
 
Sept. 18, 2020, 11 p.m. N/A N/A N/A 6.0 ppb (6) N/A 0.0 ppb (0) 29.0 ppb (22) 0.29 ppb (3) N/A 15.2 μg/m3 (57) 57.0
 
Sept. 18, 2020, 10 p.m. N/A N/A N/A 4.0 ppb (4) N/A 0.0 ppb (0) 36.0 ppb (28) 0.26 ppb (3) N/A 14.1 μg/m3 (54) 54.0
 
Sept. 18, 2020, 9 p.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 42.0 ppb (32) 0.22 ppb (2) N/A 12.9 μg/m3 (52) 52.0
 
Sept. 18, 2020, 8 p.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 44.0 ppb (34) 0.22 ppb (2) N/A 11.7 μg/m3 (49) 49.0
 
Sept. 18, 2020, 7 p.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 44.0 ppb (34) 0.21 ppb (2) N/A 11.7 μg/m3 (49) 49.0
 
Sept. 18, 2020, 6 p.m. N/A N/A N/A 4.0 ppb (4) N/A 0.0 ppb (0) 43.0 ppb (33) 0.21 ppb (2) N/A 11.0 μg/m3 (46) 46.0
 
Sept. 18, 2020, 5 p.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 41.0 ppb (32) 0.2 ppb (2) N/A 10.0 μg/m3 (42) 42.0
 
Sept. 18, 2020, 4 p.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 37.0 ppb (28) 0.2 ppb (2) N/A 9.9 μg/m3 (41) 41.0
 
Sept. 18, 2020, 3 p.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 32.0 ppb (25) 0.19 ppb (2) N/A 9.8 μg/m3 (41) 41.0
 
Sept. 18, 2020, 2 p.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 24.0 ppb (18) 0.18 ppb (2) N/A 8.1 μg/m3 (34) 34.0
 
Sept. 18, 2020, 1 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 24.0 ppb (18) 0.22 ppb (2) N/A 5.3 μg/m3 (22) 22.0
 
Sept. 18, 2020, noon N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 27.0 ppb (21) 0.19 ppb (2) N/A 5.0 μg/m3 (21) 21.0
 
Sept. 18, 2020, 11 a.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 28.0 ppb (22) 0.19 ppb (2) N/A 5.2 μg/m3 (22) 22.0
 
Sept. 18, 2020, 10 a.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 31.0 ppb (24) 0.13 ppb (1) N/A 5.1 μg/m3 (21) 24.0
 
Sept. 18, 2020, 9 a.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) N/A 0.11 ppb (1) N/A 3.8 μg/m3 (16) 16.0
 
Sept. 18, 2020, 8 a.m. N/A N/A N/A 1.0 ppb (1) N/A N/A 30.0 ppb (23) N/A N/A 3.1 μg/m3 (13) 23.0
 
Sept. 18, 2020, 7 a.m. N/A N/A N/A 1.0 ppb (1) N/A N/A 31.0 ppb (24) N/A N/A 2.2 μg/m3 (9) 24.0
 
Sept. 18, 2020, 6 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 31.0 ppb (24) 0.13 ppb (1) N/A 1.9 μg/m3 (8) 24.0
 
Sept. 18, 2020, 5 a.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 31.0 ppb (24) 0.12 ppb (1) N/A 1.6 μg/m3 (7) 24.0
 
Sept. 18, 2020, 4 a.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 29.0 ppb (22) 0.13 ppb (1) N/A 1.6 μg/m3 (7) 22.0
 
Sept. 18, 2020, 3 a.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 29.0 ppb (22) 0.13 ppb (1) N/A 1.8 μg/m3 (8) 22.0
 
Sept. 18, 2020, 2 a.m. N/A N/A N/A 1.0 ppb (1) N/A 0.0 ppb (0) 30.0 ppb (23) 0.13 ppb (1) N/A 2.0 μg/m3 (8) 23.0
 
Sept. 18, 2020, 1 a.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 29.0 ppb (22) 0.13 ppb (1) N/A 2.2 μg/m3 (9) 22.0
 
Sept. 18, 2020, midnight N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 29.0 ppb (22) 0.13 ppb (1) N/A 1.7 μg/m3 (7) 22.0
 
Sept. 17, 2020, 11 p.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 23.0 ppb (18) 0.15 ppb (2) N/A 1.3 μg/m3 (5) 18.0
 
Sept. 17, 2020, 10 p.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 22.0 ppb (17) 0.16 ppb (2) N/A 1.2 μg/m3 (5) 17.0
 
Sept. 17, 2020, 9 p.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 26.0 ppb (20) 0.15 ppb (2) N/A 1.5 μg/m3 (6) 20.0
 
Sept. 17, 2020, 8 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 29.0 ppb (22) 0.14 ppb (2) N/A 1.8 μg/m3 (8) 22.0
 
Sept. 17, 2020, 7 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 27.0 ppb (21) 0.15 ppb (2) N/A 2.8 μg/m3 (12) 21.0
 
Sept. 17, 2020, 6 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 29.0 ppb (22) 0.15 ppb (2) N/A 3.4 μg/m3 (14) 22.0
 
Sept. 17, 2020, 5 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 27.0 ppb (21) 0.15 ppb (2) N/A 3.9 μg/m3 (16) 21.0
 
Sept. 17, 2020, 4 p.m. N/A N/A N/A 5.0 ppb (5) N/A 0.0 ppb (0) 21.0 ppb (16) 0.17 ppb (2) N/A 4.4 μg/m3 (18) 18.0
 
Sept. 17, 2020, 3 p.m. N/A N/A N/A 8.0 ppb (7) N/A 0.0 ppb (0) 17.0 ppb (13) 0.2 ppb (2) N/A 4.9 μg/m3 (20) 20.0
 
Sept. 17, 2020, 2 p.m. N/A N/A N/A 9.0 ppb (8) N/A 0.0 ppb (0) 4.0 ppb (3) 0.28 ppb (3) N/A 6.0 μg/m3 (25) 25.0
 
Sept. 17, 2020, 1 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 4.0 ppb (3) 0.25 ppb (3) N/A 6.0 μg/m3 (25) 25.0
 
Sept. 17, 2020, noon N/A N/A N/A 12.0 ppb (11) N/A 0.0 ppb (0) 2.0 ppb (2) 0.25 ppb (3) N/A 6.0 μg/m3 (25) 25.0
 
Sept. 17, 2020, 11 a.m. N/A N/A N/A 13.0 ppb (12) N/A 0.0 ppb (0) 0.0 ppb (0) 0.24 ppb (3) N/A 6.1 μg/m3 (25) 25.0
 
Sept. 17, 2020, 10 a.m. N/A N/A N/A 10.0 ppb (9) N/A 0.0 ppb (0) 1.0 ppb (1) 0.22 ppb (2) N/A 6.0 μg/m3 (25) 25.0
 
Sept. 17, 2020, 9 a.m. N/A N/A N/A 8.0 ppb (7) N/A 0.0 ppb (0) 2.0 ppb (2) 0.21 ppb (2) N/A 6.2 μg/m3 (26) 26.0
 
Sept. 17, 2020, 8 a.m. N/A N/A N/A 10.0 ppb (9) N/A 0.0 ppb (0) 1.0 ppb (1) 0.22 ppb (2) N/A 6.3 μg/m3 (26) 26.0
 
Sept. 17, 2020, 7 a.m. N/A N/A N/A 12.0 ppb (11) N/A 0.0 ppb (0) 0.0 ppb (0) 0.23 ppb (3) N/A 6.3 μg/m3 (26) 26.0
 
Sept. 17, 2020, 6 a.m. N/A N/A N/A 14.0 ppb (13) N/A 0.0 ppb (0) 0.0 ppb (0) 0.25 ppb (3) N/A 6.6 μg/m3 (28) 28.0
 
Sept. 17, 2020, 5 a.m. N/A N/A N/A 12.0 ppb (11) N/A 0.0 ppb (0) 3.0 ppb (2) 0.26 ppb (3) N/A 7.4 μg/m3 (31) 31.0
 
Sept. 17, 2020, 4 a.m. N/A N/A N/A 8.0 ppb (7) N/A 0.0 ppb (0) 7.0 ppb (5) 0.24 ppb (3) N/A 6.9 μg/m3 (29) 29.0
 
Sept. 17, 2020, 3 a.m. N/A N/A N/A 7.0 ppb (6) N/A 0.0 ppb (0) 12.0 ppb (9) 0.21 ppb (2) N/A 6.1 μg/m3 (25) 25.0
 
Sept. 17, 2020, 2 a.m. N/A N/A N/A 8.0 ppb (7) N/A 0.0 ppb (0) 13.0 ppb (10) 0.23 ppb (3) N/A 6.1 μg/m3 (25) 25.0
 
Sept. 17, 2020, 1 a.m. N/A N/A N/A 6.0 ppb (6) N/A 0.0 ppb (0) 17.0 ppb (13) 0.2 ppb (2) N/A 5.8 μg/m3 (24) 24.0
 
Sept. 17, 2020, midnight N/A N/A N/A 6.0 ppb (6) N/A 0.0 ppb (0) 19.0 ppb (15) 0.21 ppb (2) N/A 5.8 μg/m3 (24) 24.0
 
Sept. 16, 2020, 11 p.m. N/A N/A N/A 5.0 ppb (5) N/A 0.0 ppb (0) 23.0 ppb (18) 0.2 ppb (2) N/A 5.3 μg/m3 (22) 22.0
 
Sept. 16, 2020, 10 p.m. N/A N/A N/A 4.0 ppb (4) N/A 0.0 ppb (0) 29.0 ppb (22) 0.17 ppb (2) N/A 5.4 μg/m3 (23) 23.0
 
Sept. 16, 2020, 9 p.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 33.0 ppb (25) 0.17 ppb (2) N/A 5.6 μg/m3 (23) 25.0
 
Sept. 16, 2020, 8 p.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 36.0 ppb (28) 0.15 ppb (2) N/A 5.5 μg/m3 (23) 28.0
 
Sept. 16, 2020, 7 p.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 37.0 ppb (28) 0.15 ppb (2) N/A 5.3 μg/m3 (22) 28.0
 
Sept. 16, 2020, 6 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 38.0 ppb (29) 0.14 ppb (2) N/A 5.1 μg/m3 (21) 29.0
 
Sept. 16, 2020, 5 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 37.0 ppb (28) 0.14 ppb (2) N/A 4.6 μg/m3 (19) 28.0
 
Sept. 16, 2020, 4 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 36.0 ppb (28) 0.14 ppb (2) N/A 4.4 μg/m3 (18) 28.0
 
Sept. 16, 2020, 3 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 34.0 ppb (26) 0.13 ppb (1) N/A 4.2 μg/m3 (18) 26.0
 
Sept. 16, 2020, 2 p.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 29.0 ppb (22) 0.14 ppb (2) N/A 4.0 μg/m3 (17) 22.0
 
Sept. 16, 2020, 1 p.m. N/A N/A N/A 7.0 ppb (6) N/A 0.0 ppb (0) 15.0 ppb (12) 0.19 ppb (2) N/A 4.2 μg/m3 (18) 18.0
 
Sept. 16, 2020, noon N/A N/A N/A 8.0 ppb (7) N/A 0.0 ppb (0) 5.0 ppb (4) 0.24 ppb (3) N/A 4.2 μg/m3 (18) 18.0
 
Sept. 16, 2020, 11 a.m. N/A N/A N/A 8.0 ppb (7) N/A 0.0 ppb (0) 2.0 ppb (2) 0.22 ppb (2) N/A 4.1 μg/m3 (17) 17.0
 
Sept. 16, 2020, 10 a.m. N/A N/A N/A 10.0 ppb (9) N/A 0.0 ppb (0) 1.0 ppb (1) 0.19 ppb (2) N/A 4.3 μg/m3 (18) 18.0
 
Sept. 16, 2020, 9 a.m. N/A N/A N/A 9.0 ppb (8) N/A 0.0 ppb (0) 3.0 ppb (2) 0.17 ppb (2) N/A 4.2 μg/m3 (18) 18.0
 
Sept. 16, 2020, 8 a.m. N/A N/A N/A 9.0 ppb (8) N/A 0.0 ppb (0) 3.0 ppb (2) 0.17 ppb (2) N/A 4.4 μg/m3 (18) 18.0
 
Sept. 16, 2020, 7 a.m. N/A N/A N/A 9.0 ppb (8) N/A 0.0 ppb (0) 4.0 ppb (3) 0.16 ppb (2) N/A 4.4 μg/m3 (18) 18.0
 
Sept. 16, 2020, 6 a.m. N/A N/A N/A 9.0 ppb (8) N/A 0.0 ppb (0) 3.0 ppb (2) 0.16 ppb (2) N/A 4.5 μg/m3 (19) 19.0
 
Sept. 16, 2020, 5 a.m. N/A N/A N/A 9.0 ppb (8) N/A 0.0 ppb (0) 5.0 ppb (4) 0.16 ppb (2) N/A 4.8 μg/m3 (20) 20.0
 
Sept. 16, 2020, 4 a.m. N/A N/A N/A 7.0 ppb (6) N/A 0.0 ppb (0) 8.0 ppb (6) 0.17 ppb (2) N/A 4.5 μg/m3 (19) 19.0
 
Sept. 16, 2020, 3 a.m. N/A N/A N/A 5.0 ppb (5) N/A 0.0 ppb (0) 11.0 ppb (8) 0.18 ppb (2) N/A 4.3 μg/m3 (18) 18.0
 
Sept. 16, 2020, 2 a.m. N/A N/A N/A 6.0 ppb (6) N/A 0.0 ppb (0) 11.0 ppb (8) 0.19 ppb (2) N/A 4.2 μg/m3 (18) 18.0
 
Sept. 16, 2020, 1 a.m. N/A N/A N/A 7.0 ppb (6) N/A 0.0 ppb (0) 11.0 ppb (8) 0.2 ppb (2) N/A 4.7 μg/m3 (20) 20.0
 
Sept. 16, 2020, midnight N/A N/A N/A 7.0 ppb (6) N/A 0.0 ppb (0) 13.0 ppb (10) 0.21 ppb (2) N/A 4.4 μg/m3 (18) 18.0
 
Sept. 15, 2020, 11 p.m. N/A N/A N/A 5.0 ppb (5) N/A 0.0 ppb (0) 18.0 ppb (14) 0.21 ppb (2) N/A 4.1 μg/m3 (17) 17.0
 
Sept. 15, 2020, 10 p.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 24.0 ppb (18) 0.16 ppb (2) N/A 3.7 μg/m3 (15) 18.0
 
Sept. 15, 2020, 9 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 29.0 ppb (22) 0.14 ppb (2) N/A 3.8 μg/m3 (16) 22.0
 
Sept. 15, 2020, 8 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 30.0 ppb (23) 0.13 ppb (1) N/A 3.6 μg/m3 (15) 23.0
 
Sept. 15, 2020, 7 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 30.0 ppb (23) 0.13 ppb (1) N/A 3.3 μg/m3 (14) 23.0
 
Sept. 15, 2020, 6 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 29.0 ppb (22) 0.13 ppb (1) N/A 3.0 μg/m3 (12) 22.0
 
Sept. 15, 2020, 5 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 27.0 ppb (21) 0.13 ppb (1) N/A 2.7 μg/m3 (11) 21.0
 
Sept. 15, 2020, 4 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 24.0 ppb (18) 0.13 ppb (1) N/A 2.6 μg/m3 (11) 18.0
 
Sept. 15, 2020, 3 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 22.0 ppb (17) 0.13 ppb (1) N/A 2.6 μg/m3 (11) 17.0
 
Sept. 15, 2020, 2 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 20.0 ppb (15) 0.13 ppb (1) N/A 2.8 μg/m3 (12) 15.0
 
Sept. 15, 2020, 1 p.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 18.0 ppb (14) 0.13 ppb (1) N/A 3.2 μg/m3 (13) 14.0
 
Sept. 15, 2020, noon N/A N/A N/A 5.0 ppb (5) N/A 0.0 ppb (0) 15.0 ppb (12) 0.15 ppb (2) N/A 3.9 μg/m3 (16) 16.0
 
Sept. 15, 2020, 11 a.m. N/A N/A N/A 5.0 ppb (5) N/A 0.0 ppb (0) 12.0 ppb (9) 0.16 ppb (2) N/A 4.7 μg/m3 (20) 20.0
 
Sept. 15, 2020, 10 a.m. N/A N/A N/A 4.0 ppb (4) N/A 0.0 ppb (0) 13.0 ppb (10) 0.15 ppb (2) N/A 4.9 μg/m3 (20) 20.0
 
Sept. 15, 2020, 9 a.m. N/A N/A N/A 4.0 ppb (4) N/A 0.0 ppb (0) N/A 0.1 ppb (1) N/A 5.5 μg/m3 (23) 23.0
 
Sept. 15, 2020, 8 a.m. N/A N/A N/A 4.0 ppb (4) N/A N/A 15.0 ppb (12) N/A N/A 5.6 μg/m3 (23) 23.0
 
Sept. 15, 2020, 7 a.m. N/A N/A N/A 6.0 ppb (6) N/A N/A 15.0 ppb (12) N/A N/A 5.9 μg/m3 (25) 25.0
 
Sept. 15, 2020, 6 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 17.0 ppb (13) 0.16 ppb (2) N/A 5.8 μg/m3 (24) 24.0
 
Sept. 15, 2020, 5 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 19.0 ppb (15) 0.16 ppb (2) N/A 5.7 μg/m3 (24) 24.0
 
Sept. 15, 2020, 4 a.m. N/A N/A N/A 3.0 ppb (3) N/A 1.0 ppb (1) 22.0 ppb (17) 0.15 ppb (2) N/A 5.6 μg/m3 (23) 23.0
 
Sept. 15, 2020, 3 a.m. N/A N/A N/A 4.0 ppb (4) N/A 0.0 ppb (0) 23.0 ppb (18) 0.16 ppb (2) N/A 5.3 μg/m3 (22) 22.0
 
Sept. 15, 2020, 2 a.m. N/A N/A N/A 6.0 ppb (6) N/A 0.0 ppb (0) 21.0 ppb (16) 0.17 ppb (2) N/A 5.6 μg/m3 (23) 23.0
 
Sept. 15, 2020, 1 a.m. N/A N/A N/A 6.0 ppb (6) N/A 0.0 ppb (0) 23.0 ppb (18) 0.17 ppb (2) N/A 5.6 μg/m3 (23) 23.0
 
Sept. 15, 2020, midnight N/A N/A N/A 4.0 ppb (4) N/A 0.0 ppb (0) 27.0 ppb (21) 0.17 ppb (2) N/A 5.6 μg/m3 (23) 23.0
 
Sept. 14, 2020, 11 p.m. N/A N/A N/A 4.0 ppb (4) N/A 0.0 ppb (0) 29.0 ppb (22) 0.21 ppb (2) N/A 5.6 μg/m3 (23) 23.0
 
Sept. 14, 2020, 10 p.m. N/A N/A N/A 4.0 ppb (4) N/A 0.0 ppb (0) 33.0 ppb (25) 0.19 ppb (2) N/A 5.6 μg/m3 (23) 25.0
 
Sept. 14, 2020, 9 p.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 37.0 ppb (28) 0.17 ppb (2) N/A 5.5 μg/m3 (23) 28.0
 
Sept. 14, 2020, 8 p.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 41.0 ppb (32) 0.17 ppb (2) N/A 6.2 μg/m3 (26) 32.0
 
Sept. 14, 2020, 7 p.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 39.0 ppb (30) 0.17 ppb (2) N/A 6.7 μg/m3 (28) 30.0
 
Sept. 14, 2020, 6 p.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 33.0 ppb (25) 0.17 ppb (2) N/A 6.9 μg/m3 (29) 29.0
 
Sept. 14, 2020, 5 p.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 29.0 ppb (22) 0.18 ppb (2) N/A 6.6 μg/m3 (28) 28.0
 
Sept. 14, 2020, 4 p.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 24.0 ppb (18) 0.19 ppb (2) N/A 6.7 μg/m3 (28) 28.0
 
Sept. 14, 2020, 3 p.m. N/A N/A N/A 3.0 ppb (3) N/A N/A 24.0 ppb (18) N/A N/A 6.5 μg/m3 (27) 27.0
 
Sept. 14, 2020, 2 p.m. N/A N/A N/A 3.0 ppb (3) N/A N/A N/A N/A N/A 5.9 μg/m3 (25) 25.0
 
Sept. 14, 2020, 1 p.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 22.0 ppb (17) 0.17 ppb (2) N/A 5.7 μg/m3 (24) 24.0
 
Sept. 14, 2020, noon N/A N/A N/A 5.0 ppb (5) N/A 0.0 ppb (0) 16.0 ppb (12) 0.18 ppb (2) N/A 6.0 μg/m3 (25) 25.0
 
Sept. 14, 2020, 11 a.m. N/A N/A N/A 7.0 ppb (6) N/A 0.0 ppb (0) 9.0 ppb (7) 0.2 ppb (2) N/A 6.3 μg/m3 (26) 26.0
 
Sept. 14, 2020, 10 a.m. N/A N/A N/A 11.0 ppb (10) N/A 0.0 ppb (0) 1.0 ppb (1) 0.3 ppb (3) N/A 7.7 μg/m3 (32) 32.0
 
Sept. 14, 2020, 9 a.m. N/A N/A N/A 8.0 ppb (7) N/A 0.0 ppb (0) 0.0 ppb (0) 0.31 ppb (3) N/A 8.5 μg/m3 (35) 35.0
 
Sept. 14, 2020, 8 a.m. N/A N/A N/A 10.0 ppb (9) N/A 0.0 ppb (0) 0.0 ppb (0) 0.31 ppb (3) N/A 9.1 μg/m3 (38) 38.0
 
Sept. 14, 2020, 7 a.m. N/A N/A N/A 8.0 ppb (7) N/A 0.0 ppb (0) 1.0 ppb (1) 0.3 ppb (3) N/A 9.5 μg/m3 (40) 40.0
 
Sept. 14, 2020, 6 a.m. N/A N/A N/A 10.0 ppb (9) N/A 0.0 ppb (0) 2.0 ppb (2) 0.31 ppb (3) N/A 9.8 μg/m3 (41) 41.0
 
Sept. 14, 2020, 5 a.m. N/A N/A N/A 9.0 ppb (8) N/A 0.0 ppb (0) 3.0 ppb (2) 0.31 ppb (3) N/A 9.1 μg/m3 (38) 38.0
 
Sept. 14, 2020, 4 a.m. N/A N/A N/A 8.0 ppb (7) N/A 0.0 ppb (0) 7.0 ppb (5) 0.3 ppb (3) N/A 10.0 μg/m3 (42) 42.0
 
Sept. 14, 2020, 3 a.m. N/A N/A N/A 9.0 ppb (8) N/A 0.0 ppb (0) 8.0 ppb (6) 0.32 ppb (4) N/A 12.3 μg/m3 (51) 51.0
 
Sept. 14, 2020, 2 a.m. N/A N/A N/A 11.0 ppb (10) N/A 0.0 ppb (0) 10.0 ppb (8) 0.34 ppb (4) N/A 8.8 μg/m3 (37) 37.0
 
Sept. 14, 2020, 1 a.m. N/A N/A N/A 14.0 ppb (13) N/A 0.0 ppb (0) 13.0 ppb (10) 0.32 ppb (4) N/A 7.8 μg/m3 (32) 32.0
 
Sept. 14, 2020, midnight N/A N/A N/A 9.0 ppb (8) N/A 0.0 ppb (0) 22.0 ppb (17) 0.35 ppb (4) N/A 7.6 μg/m3 (32) 32.0
 
Sept. 13, 2020, 11 p.m. N/A N/A N/A 6.0 ppb (6) N/A 0.0 ppb (0) 30.0 ppb (23) 0.26 ppb (3) N/A 7.2 μg/m3 (30) 30.0
 
Sept. 13, 2020, 10 p.m. N/A N/A N/A 4.0 ppb (4) N/A 0.0 ppb (0) 40.0 ppb (31) 0.19 ppb (2) N/A 6.8 μg/m3 (28) 31.0
 
Sept. 13, 2020, 9 p.m. N/A N/A N/A 3.0 ppb (3) N/A 0.0 ppb (0) 44.0 ppb (34) 0.17 ppb (2) N/A 6.7 μg/m3 (28) 34.0
 
Sept. 13, 2020, 8 p.m. N/A N/A N/A 2.0 ppb (2) N/A 0.0 ppb (0) 47.0 ppb (36) 0.17 ppb (2) N/A 6.8 μg/m3 (28) 36.0