ID: 1312

AQSQID: 250270023

Site Name: Worcester

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

Updated: Dec. 4, 2020, 7:42 p.m.

Location: Worcester (Downtown Worcester), MA

Reporting: True, Located: True

Current AQI: 34.0

Worcester (Downtown Worcester) MA, US: 42.263901, -71.794701

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
Dec. 4, 2020, 5 p.m. 16.0 ppb (16) 7.0 ppb (7) N/A 10.0 ppb (10) N/A 0.0 ppb (0) N/A 0.25 ppb (3) N/A 8.0 μg/m3 (34) 34.0
 
Dec. 4, 2020, 4 p.m. 14.0 ppb (14) 6.0 ppb (6) N/A 8.0 ppb (8) N/A 0.0 ppb (0) N/A 0.24 ppb (3) N/A 13.0 μg/m3 (53) 53.0
 
Dec. 4, 2020, 3 p.m. 19.0 ppb (18) 8.0 ppb (8) N/A 11.0 ppb (11) N/A 0.0 ppb (0) N/A 0.26 ppb (4) N/A 5.0 μg/m3 (21) 21.0
 
Dec. 4, 2020, 2 p.m. 22.0 ppb (21) 9.0 ppb (9) N/A 13.0 ppb (13) N/A 0.0 ppb (0) N/A 0.26 ppb (4) N/A 7.0 μg/m3 (30) 30.0
 
Dec. 4, 2020, 1 p.m. 30.0 ppb (29) 12.0 ppb (12) N/A 18.0 ppb (17) N/A 0.0 ppb (0) N/A 0.31 ppb (4) N/A 10.0 μg/m3 (42) 42.0
 
Dec. 4, 2020, noon 28.0 ppb (27) 9.0 ppb (9) N/A 19.0 ppb (18) N/A 0.0 ppb (0) N/A 0.32 ppb (4) N/A 6.0 μg/m3 (25) 27.0
 
Dec. 4, 2020, 11 a.m. 24.0 ppb (23) 5.0 ppb (5) N/A 19.0 ppb (18) N/A 0.0 ppb (0) N/A 0.28 ppb (4) N/A 8.0 μg/m3 (34) 34.0
 
Dec. 4, 2020, 10 a.m. 24.0 ppb (23) 5.0 ppb (5) N/A 20.0 ppb (19) N/A 0.0 ppb (0) N/A 0.27 ppb (4) N/A 11.0 μg/m3 (46) 46.0
 
Dec. 4, 2020, 9 a.m. 46.0 ppb (44) 18.0 ppb (17) N/A 28.0 ppb (27) N/A 0.0 ppb (0) N/A 0.32 ppb (4) N/A 12.0 μg/m3 (50) 50.0
 
Dec. 4, 2020, 8 a.m. 29.0 ppb (28) 7.0 ppb (7) N/A 22.0 ppb (21) N/A 0.0 ppb (0) N/A 0.29 ppb (4) N/A 10.0 μg/m3 (42) 42.0
 
Dec. 4, 2020, 7 a.m. 21.0 ppb (20) 4.0 ppb (4) N/A 17.0 ppb (17) N/A 0.0 ppb (0) N/A 0.29 ppb (4) N/A 11.0 μg/m3 (46) 46.0
 
Dec. 4, 2020, 6 a.m. 30.0 ppb (29) 9.0 ppb (9) N/A 21.0 ppb (20) N/A 0.0 ppb (0) N/A 0.32 ppb (4) N/A 10.0 μg/m3 (42) 42.0
 
Dec. 4, 2020, 5 a.m. 48.0 ppb (46) 22.0 ppb (21) N/A 26.0 ppb (25) N/A 0.0 ppb (0) N/A 0.36 ppb (5) N/A 11.0 μg/m3 (46) 46.0
 
Dec. 4, 2020, 4 a.m. 41.0 ppb (39) 16.0 ppb (16) N/A 25.0 ppb (24) N/A 0.0 ppb (0) N/A 0.36 ppb (5) N/A 16.0 μg/m3 (60) 60.0
 
Dec. 4, 2020, 3 a.m. 36.0 ppb (34) 13.0 ppb (13) N/A 23.0 ppb (22) N/A 0.0 ppb (0) N/A 0.32 ppb (4) N/A 9.0 μg/m3 (38) 38.0
 
Dec. 4, 2020, 2 a.m. 40.0 ppb (38) 16.0 ppb (16) N/A 24.0 ppb (23) N/A 0.0 ppb (0) N/A 0.34 ppb (4) N/A 13.0 μg/m3 (53) 53.0
 
Dec. 4, 2020, 1 a.m. 25.0 ppb (24) 6.0 ppb (6) N/A 19.0 ppb (18) N/A 0.0 ppb (0) N/A 0.3 ppb (4) N/A 16.0 μg/m3 (60) 60.0
 
Dec. 4, 2020, midnight 27.0 ppb (26) 7.0 ppb (7) N/A 20.0 ppb (19) N/A 0.0 ppb (0) N/A 0.33 ppb (4) N/A 10.0 μg/m3 (42) 42.0
 
Dec. 3, 2020, 11 p.m. 27.0 ppb (26) 6.0 ppb (6) N/A 21.0 ppb (20) N/A 0.0 ppb (0) N/A 0.32 ppb (4) N/A 12.0 μg/m3 (50) 50.0
 
Dec. 3, 2020, 10 p.m. 40.0 ppb (38) 13.0 ppb (13) N/A 27.0 ppb (26) N/A 0.0 ppb (0) N/A 0.41 ppb (5) N/A 14.0 μg/m3 (55) 55.0
 
Dec. 3, 2020, 9 p.m. 35.0 ppb (34) 13.0 ppb (13) N/A 22.0 ppb (21) N/A 0.0 ppb (0) N/A 0.42 ppb (5) N/A 8.0 μg/m3 (34) 34.0
 
Dec. 3, 2020, 8 p.m. 27.0 ppb (26) 12.0 ppb (12) N/A 15.0 ppb (15) N/A 0.0 ppb (0) N/A 0.3 ppb (4) N/A 6.0 μg/m3 (25) 26.0
 
Dec. 3, 2020, 7 p.m. 12.0 ppb (12) 5.0 ppb (5) N/A 7.0 ppb (7) N/A 0.0 ppb (0) N/A 0.27 ppb (4) N/A 7.0 μg/m3 (30) 30.0
 
Dec. 3, 2020, 6 p.m. 13.0 ppb (13) 6.0 ppb (6) N/A 7.0 ppb (7) N/A 0.0 ppb (0) N/A 0.24 ppb (3) N/A 7.0 μg/m3 (30) 30.0
 
Dec. 3, 2020, 5 p.m. 15.0 ppb (15) 8.0 ppb (8) N/A 7.0 ppb (7) N/A 0.0 ppb (0) N/A 0.23 ppb (3) N/A 5.0 μg/m3 (21) 21.0
 
Dec. 3, 2020, 4 p.m. 14.0 ppb (14) 8.0 ppb (8) N/A 6.0 ppb (6) N/A 0.0 ppb (0) N/A 0.22 ppb (3) N/A 4.0 μg/m3 (17) 17.0
 
Dec. 3, 2020, 3 p.m. 15.0 ppb (15) 8.0 ppb (8) N/A 7.0 ppb (7) N/A 0.0 ppb (0) N/A 0.23 ppb (3) N/A 6.0 μg/m3 (25) 25.0
 
Dec. 3, 2020, 2 p.m. 29.0 ppb (28) 13.0 ppb (13) N/A 16.0 ppb (16) N/A 0.0 ppb (0) N/A 0.28 ppb (4) N/A 7.0 μg/m3 (30) 30.0
 
Dec. 3, 2020, 1 p.m. 30.0 ppb (29) 12.0 ppb (12) N/A 18.0 ppb (17) N/A 0.0 ppb (0) N/A 0.29 ppb (4) N/A 7.0 μg/m3 (30) 30.0
 
Dec. 3, 2020, noon 34.0 ppb (33) 12.0 ppb (12) N/A 22.0 ppb (21) N/A 0.0 ppb (0) N/A 0.37 ppb (5) N/A 7.0 μg/m3 (30) 33.0
 
Dec. 3, 2020, 11 a.m. 33.0 ppb (32) 7.0 ppb (7) N/A 26.0 ppb (25) N/A 0.0 ppb (0) N/A 0.28 ppb (4) N/A 9.0 μg/m3 (38) 38.0
 
Dec. 3, 2020, 10 a.m. 13.0 ppb (13) 2.0 ppb (2) N/A 11.0 ppb (11) N/A 0.0 ppb (0) N/A N/A N/A 6.0 μg/m3 (25) 25.0
 
Dec. 3, 2020, 9 a.m. 10.0 ppb (10) 1.0 ppb (1) N/A 9.0 ppb (9) N/A 0.0 ppb (0) N/A 0.19 ppb (3) N/A 3.0 μg/m3 (13) 13.0
 
Dec. 3, 2020, 8 a.m. 6.0 ppb (6) 1.0 ppb (1) N/A 6.0 ppb (6) N/A 0.0 ppb (0) N/A 0.2 ppb (3) N/A 4.0 μg/m3 (17) 17.0
 
Dec. 3, 2020, 7 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) N/A 0.18 ppb (3) N/A 5.0 μg/m3 (21) 21.0
 
Dec. 3, 2020, 6 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) N/A 0.16 ppb (3) N/A 2.0 μg/m3 (9) 9.0
 
Dec. 3, 2020, 5 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) N/A 0.17 ppb (3) N/A 3.0 μg/m3 (13) 13.0
 
Dec. 3, 2020, 4 a.m. 4.0 ppb (4) 1.0 ppb (1) N/A 3.0 ppb (3) N/A N/A N/A 0.24 ppb (3) N/A 4.0 μg/m3 (17) 17.0
 
Dec. 3, 2020, 3 a.m. 6.0 ppb (6) 2.0 ppb (2) N/A 3.0 ppb (3) N/A N/A N/A 0.18 ppb (3) N/A 3.0 μg/m3 (13) 13.0
 
Dec. 3, 2020, 2 a.m. 6.0 ppb (6) 3.0 ppb (3) N/A 3.0 ppb (3) N/A N/A N/A 0.18 ppb (3) N/A 6.0 μg/m3 (25) 25.0
 
Dec. 3, 2020, 1 a.m. 5.0 ppb (5) 2.0 ppb (2) N/A 3.0 ppb (3) N/A 0.0 ppb (0) N/A 0.18 ppb (3) N/A 12.0 μg/m3 (50) 50.0
 
Dec. 3, 2020, midnight 5.0 ppb (5) 2.0 ppb (2) N/A 3.0 ppb (3) N/A 0.0 ppb (0) N/A 0.2 ppb (3) N/A 5.0 μg/m3 (21) 21.0
 
Dec. 2, 2020, 11 p.m. 9.0 ppb (9) 3.0 ppb (3) N/A 5.0 ppb (5) N/A 0.0 ppb (0) N/A 0.22 ppb (3) N/A 4.0 μg/m3 (17) 17.0
 
Dec. 2, 2020, 10 p.m. 12.0 ppb (12) 5.0 ppb (5) N/A 7.0 ppb (7) N/A 0.0 ppb (0) N/A 0.28 ppb (4) N/A 4.0 μg/m3 (17) 17.0
 
Dec. 2, 2020, 9 p.m. 21.0 ppb (20) 11.0 ppb (11) N/A 10.0 ppb (10) N/A 0.0 ppb (0) N/A 0.32 ppb (4) N/A 5.0 μg/m3 (21) 21.0
 
Dec. 2, 2020, 8 p.m. 22.0 ppb (21) 11.0 ppb (11) N/A 10.0 ppb (10) N/A 0.0 ppb (0) N/A 0.32 ppb (4) N/A 5.0 μg/m3 (21) 21.0
 
Dec. 2, 2020, 7 p.m. 11.0 ppb (11) 6.0 ppb (6) N/A 6.0 ppb (6) N/A 0.0 ppb (0) N/A 0.22 ppb (3) N/A 6.0 μg/m3 (25) 25.0
 
Dec. 2, 2020, 6 p.m. 16.0 ppb (16) 8.0 ppb (8) N/A 8.0 ppb (8) N/A 0.0 ppb (0) N/A 0.27 ppb (4) N/A 5.0 μg/m3 (21) 21.0
 
Dec. 2, 2020, 5 p.m. 13.0 ppb (13) 7.0 ppb (7) N/A 6.0 ppb (6) N/A 0.0 ppb (0) N/A 0.23 ppb (3) N/A 5.0 μg/m3 (21) 21.0
 
Dec. 2, 2020, 4 p.m. 14.0 ppb (14) 8.0 ppb (8) N/A 7.0 ppb (7) N/A 0.0 ppb (0) N/A 0.2 ppb (3) N/A 3.0 μg/m3 (13) 14.0
 
Dec. 2, 2020, 3 p.m. 14.0 ppb (14) 7.0 ppb (7) N/A 6.0 ppb (6) N/A 0.0 ppb (0) N/A 0.23 ppb (3) N/A 6.0 μg/m3 (25) 25.0
 
Dec. 2, 2020, 2 p.m. 17.0 ppb (17) 9.0 ppb (9) N/A 8.0 ppb (8) N/A 0.0 ppb (0) N/A 0.23 ppb (3) N/A 7.0 μg/m3 (30) 30.0
 
Dec. 2, 2020, 1 p.m. 21.0 ppb (20) 10.0 ppb (10) N/A 11.0 ppb (11) N/A 0.0 ppb (0) N/A 0.26 ppb (4) N/A 7.0 μg/m3 (30) 30.0
 
Dec. 2, 2020, noon 27.0 ppb (26) 12.0 ppb (12) N/A 15.0 ppb (15) N/A 0.0 ppb (0) N/A 0.35 ppb (4) N/A 8.0 μg/m3 (34) 34.0
 
Dec. 2, 2020, 11 a.m. 15.0 ppb (15) 4.0 ppb (4) N/A 11.0 ppb (11) N/A 0.0 ppb (0) N/A 0.21 ppb (3) N/A 5.0 μg/m3 (21) 21.0
 
Dec. 2, 2020, 10 a.m. 21.0 ppb (20) 9.0 ppb (9) N/A 12.0 ppb (12) N/A 0.0 ppb (0) N/A 0.16 ppb (3) N/A 4.0 μg/m3 (17) 20.0
 
Dec. 2, 2020, 9 a.m. 6.0 ppb (6) 1.0 ppb (1) N/A 5.0 ppb (5) N/A 0.0 ppb (0) N/A 0.15 ppb (2) N/A 6.0 μg/m3 (25) 25.0
 
Dec. 2, 2020, 8 a.m. 5.0 ppb (5) 1.0 ppb (1) N/A 4.0 ppb (4) N/A 0.0 ppb (0) N/A 0.15 ppb (2) N/A 5.0 μg/m3 (21) 21.0
 
Dec. 2, 2020, 7 a.m. 4.0 ppb (4) 1.0 ppb (1) N/A 4.0 ppb (4) N/A 0.0 ppb (0) N/A 0.16 ppb (3) N/A 3.0 μg/m3 (13) 13.0
 
Dec. 2, 2020, 6 a.m. 4.0 ppb (4) 1.0 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) N/A 0.14 ppb (2) N/A 6.0 μg/m3 (25) 25.0
 
Dec. 2, 2020, 5 a.m. 8.0 ppb (8) 2.0 ppb (2) N/A 6.0 ppb (6) N/A 0.0 ppb (0) N/A 0.15 ppb (2) N/A 9.0 μg/m3 (38) 38.0
 
Dec. 2, 2020, 4 a.m. 10.0 ppb (10) 3.0 ppb (3) N/A 7.0 ppb (7) N/A 0.0 ppb (0) N/A 0.18 ppb (3) N/A 6.0 μg/m3 (25) 25.0
 
Dec. 2, 2020, 3 a.m. 6.0 ppb (6) 1.0 ppb (1) N/A 5.0 ppb (5) N/A 0.0 ppb (0) N/A 0.17 ppb (3) N/A 7.0 μg/m3 (30) 30.0
 
Dec. 2, 2020, 2 a.m. 7.0 ppb (7) 2.0 ppb (2) N/A 5.0 ppb (5) N/A 0.0 ppb (0) N/A 0.18 ppb (3) N/A 4.0 μg/m3 (17) 17.0
 
Dec. 2, 2020, 1 a.m. 7.0 ppb (7) 1.0 ppb (1) N/A 5.0 ppb (5) N/A 0.0 ppb (0) N/A 0.19 ppb (3) N/A 5.0 μg/m3 (21) 21.0
 
Dec. 2, 2020, midnight 9.0 ppb (9) 2.0 ppb (2) N/A 7.0 ppb (7) N/A 0.0 ppb (0) N/A 0.2 ppb (3) N/A 0.0 μg/m3 (0) 9.0
 
Dec. 1, 2020, 11 p.m. 7.0 ppb (7) 2.0 ppb (2) N/A 5.0 ppb (5) N/A 0.0 ppb (0) N/A 0.2 ppb (3) N/A 1.0 μg/m3 (5) 7.0
 
Dec. 1, 2020, 10 p.m. 8.0 ppb (8) 2.0 ppb (2) N/A 6.0 ppb (6) N/A 0.0 ppb (0) N/A 0.22 ppb (3) N/A 3.0 μg/m3 (13) 13.0
 
Dec. 1, 2020, 9 p.m. 14.0 ppb (14) 6.0 ppb (6) N/A 9.0 ppb (9) N/A 0.0 ppb (0) N/A 0.22 ppb (3) N/A 2.0 μg/m3 (9) 14.0
 
Dec. 1, 2020, 8 p.m. 12.0 ppb (12) 4.0 ppb (4) N/A 8.0 ppb (8) N/A 0.0 ppb (0) N/A 0.23 ppb (3) N/A 2.0 μg/m3 (9) 12.0
 
Dec. 1, 2020, 7 p.m. 7.0 ppb (7) 3.0 ppb (3) N/A 5.0 ppb (5) N/A 0.0 ppb (0) N/A 0.22 ppb (3) N/A 4.0 μg/m3 (17) 17.0
 
Dec. 1, 2020, 6 p.m. 8.0 ppb (8) 3.0 ppb (3) N/A 5.0 ppb (5) N/A 0.0 ppb (0) N/A 0.25 ppb (3) N/A 5.0 μg/m3 (21) 21.0
 
Dec. 1, 2020, 5 p.m. 9.0 ppb (9) 4.0 ppb (4) N/A 5.0 ppb (5) N/A 0.0 ppb (0) N/A 0.24 ppb (3) N/A 7.0 μg/m3 (30) 30.0
 
Dec. 1, 2020, 4 p.m. 14.0 ppb (14) 6.0 ppb (6) N/A 8.0 ppb (8) N/A 0.0 ppb (0) N/A 0.24 ppb (3) N/A 7.0 μg/m3 (30) 30.0
 
Dec. 1, 2020, 3 p.m. 21.0 ppb (20) 10.0 ppb (10) N/A 12.0 ppb (12) N/A 0.0 ppb (0) N/A 0.28 ppb (4) N/A N/A 20.0
 
Dec. 1, 2020, 2 p.m. 41.0 ppb (39) 20.0 ppb (19) N/A 21.0 ppb (20) N/A 0.0 ppb (0) N/A 0.43 ppb (5) N/A 14.0 μg/m3 (55) 55.0
 
Dec. 1, 2020, 1 p.m. 54.0 ppb (51) 28.0 ppb (27) N/A 26.0 ppb (25) N/A 1.0 ppb (2) N/A 0.45 ppb (6) N/A 7.0 μg/m3 (30) 51.0
 
Dec. 1, 2020, noon 50.0 ppb (48) 23.0 ppb (22) N/A 27.0 ppb (26) N/A 0.0 ppb (0) N/A 0.46 ppb (6) N/A 10.0 μg/m3 (42) 48.0
 
Dec. 1, 2020, 11 a.m. 18.0 ppb (17) 5.0 ppb (5) N/A 13.0 ppb (13) N/A 0.0 ppb (0) N/A 0.25 ppb (3) N/A 8.0 μg/m3 (34) 34.0
 
Dec. 1, 2020, 10 a.m. 23.0 ppb (22) 7.0 ppb (7) N/A 16.0 ppb (16) N/A 0.0 ppb (0) N/A 0.19 ppb (3) N/A 9.0 μg/m3 (38) 38.0
 
Dec. 1, 2020, 9 a.m. 15.0 ppb (15) 3.0 ppb (3) N/A 12.0 ppb (12) N/A 0.0 ppb (0) N/A 0.19 ppb (3) N/A 12.0 μg/m3 (50) 50.0
 
Dec. 1, 2020, 8 a.m. 4.0 ppb (4) 1.0 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) N/A 0.17 ppb (3) N/A 12.0 μg/m3 (50) 50.0
 
Dec. 1, 2020, 7 a.m. 2.0 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) N/A 0.17 ppb (3) N/A 9.0 μg/m3 (38) 38.0
 
Dec. 1, 2020, 6 a.m. 3.0 ppb (3) 1.0 ppb (1) N/A 2.0 ppb (2) N/A 0.0 ppb (0) N/A 0.17 ppb (3) N/A 4.0 μg/m3 (17) 17.0
 
Dec. 1, 2020, 5 a.m. 8.0 ppb (8) 1.0 ppb (1) N/A 7.0 ppb (7) N/A 0.0 ppb (0) N/A 0.19 ppb (3) N/A 6.0 μg/m3 (25) 25.0
 
Dec. 1, 2020, 4 a.m. 5.0 ppb (5) 1.0 ppb (1) N/A 4.0 ppb (4) N/A 0.0 ppb (0) N/A 0.19 ppb (3) N/A 6.0 μg/m3 (25) 25.0
 
Dec. 1, 2020, 3 a.m. 2.0 ppb (2) 1.0 ppb (1) N/A 2.0 ppb (2) N/A 0.0 ppb (0) N/A 0.18 ppb (3) N/A 4.0 μg/m3 (17) 17.0
 
Dec. 1, 2020, 2 a.m. 9.0 ppb (9) 3.0 ppb (3) N/A 6.0 ppb (6) N/A 0.0 ppb (0) N/A 0.21 ppb (3) N/A 1.0 μg/m3 (5) 9.0
 
Dec. 1, 2020, 1 a.m. 5.0 ppb (5) 2.0 ppb (2) N/A 4.0 ppb (4) N/A 0.0 ppb (0) N/A 0.22 ppb (3) N/A -2.0 μg/m3 (0) 5.0
 
Dec. 1, 2020, midnight 7.0 ppb (7) 2.0 ppb (2) N/A 5.0 ppb (5) N/A 0.0 ppb (0) N/A 0.24 ppb (3) N/A 1.0 μg/m3 (5) 7.0
 
Nov. 30, 2020, 11 p.m. 7.0 ppb (7) 2.0 ppb (2) N/A 4.0 ppb (4) N/A 0.0 ppb (0) N/A 0.22 ppb (3) N/A 3.0 μg/m3 (13) 13.0
 
Nov. 30, 2020, 10 p.m. 10.0 ppb (10) 3.0 ppb (3) N/A 7.0 ppb (7) N/A 0.0 ppb (0) N/A 0.24 ppb (3) N/A 3.0 μg/m3 (13) 13.0
 
Nov. 30, 2020, 9 p.m. 14.0 ppb (14) 4.0 ppb (4) N/A 10.0 ppb (10) N/A 0.0 ppb (0) N/A 0.25 ppb (3) N/A 0.0 μg/m3 (0) 14.0
 
Nov. 30, 2020, 8 p.m. 21.0 ppb (20) 8.0 ppb (8) N/A 13.0 ppb (13) N/A 0.0 ppb (0) N/A 0.27 ppb (4) N/A 4.0 μg/m3 (17) 20.0
 
Nov. 30, 2020, 7 p.m. 41.0 ppb (39) 22.0 ppb (21) N/A 19.0 ppb (18) N/A 1.0 ppb (2) N/A 0.4 ppb (5) N/A 8.0 μg/m3 (34) 39.0
 
Nov. 30, 2020, 6 p.m. 69.0 ppb (67) 46.0 ppb (44) N/A 24.0 ppb (23) N/A 1.0 ppb (2) N/A 0.72 ppb (8) N/A 11.0 μg/m3 (46) 67.0
 
Nov. 30, 2020, 5 p.m. 49.0 ppb (47) 27.0 ppb (26) N/A 22.0 ppb (21) N/A 0.0 ppb (0) N/A 0.64 ppb (7) N/A 14.0 μg/m3 (55) 55.0
 
Nov. 30, 2020, 4 p.m. 56.0 ppb (54) 33.0 ppb (32) N/A 22.0 ppb (21) N/A 1.0 ppb (2) N/A 0.56 ppb (7) N/A 14.0 μg/m3 (55) 55.0
 
Nov. 30, 2020, 3 p.m. 48.0 ppb (46) 28.0 ppb (27) N/A 20.0 ppb (19) N/A 0.0 ppb (0) N/A 0.66 ppb (8) N/A 14.0 μg/m3 (55) 55.0
 
Nov. 30, 2020, 2 p.m. 56.0 ppb (54) 35.0 ppb (34) N/A 21.0 ppb (20) N/A 1.0 ppb (2) N/A 1.13 ppb (13) N/A 17.0 μg/m3 (62) 62.0
 
Nov. 30, 2020, 1 p.m. 67.0 ppb (65) 43.0 ppb (41) N/A 24.0 ppb (23) N/A 1.0 ppb (2) N/A 0.87 ppb (11) N/A 19.0 μg/m3 (66) 66.0
 
Nov. 30, 2020, noon 102.0 ppb (102) 75.0 ppb (74) N/A 27.0 ppb (26) N/A 1.0 ppb (2) N/A 0.93 ppb (11) N/A 14.0 μg/m3 (55) 102.0
 
Nov. 30, 2020, 11 a.m. 91.0 ppb (91) 65.0 ppb (63) N/A 25.0 ppb (24) N/A 1.0 ppb (2) N/A 0.81 ppb (10) N/A 15.0 μg/m3 (58) 91.0
 
Nov. 30, 2020, 10 a.m. 82.0 ppb (81) 57.0 ppb (55) N/A 25.0 ppb (24) N/A 1.0 ppb (2) N/A N/A N/A 18.0 μg/m3 (64) 81.0
 
Nov. 30, 2020, 9 a.m. 76.0 ppb (75) 50.0 ppb (48) N/A 26.0 ppb (25) N/A 1.0 ppb (2) N/A 0.56 ppb (7) N/A 13.0 μg/m3 (53) 75.0
 
Nov. 30, 2020, 8 a.m. 56.0 ppb (54) 30.0 ppb (29) N/A 26.0 ppb (25) N/A 0.0 ppb (0) N/A 0.58 ppb (7) N/A 14.0 μg/m3 (55) 55.0
 
Nov. 30, 2020, 7 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) N/A 0.4 ppb (5) N/A 15.0 μg/m3 (58) 58.0
 
Nov. 30, 2020, 6 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) N/A 0.37 ppb (5) N/A 11.0 μg/m3 (46) 46.0
 
Nov. 30, 2020, 5 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) N/A 0.32 ppb (4) N/A 18.0 μg/m3 (64) 64.0
 
Nov. 30, 2020, 4 a.m. 36.0 ppb (34) 10.0 ppb (10) N/A 26.0 ppb (25) N/A N/A N/A 0.4 ppb (5) N/A 13.0 μg/m3 (53) 53.0
 
Nov. 30, 2020, 3 a.m. 36.0 ppb (34) 11.0 ppb (11) N/A 25.0 ppb (24) N/A N/A N/A 0.38 ppb (5) N/A 11.0 μg/m3 (46) 46.0
 
Nov. 30, 2020, 2 a.m. 46.0 ppb (44) 19.0 ppb (18) N/A 27.0 ppb (26) N/A N/A N/A 0.48 ppb (6) N/A 12.0 μg/m3 (50) 50.0
 
Nov. 30, 2020, 1 a.m. 66.0 ppb (64) 34.0 ppb (33) N/A 33.0 ppb (32) N/A 1.0 ppb (2) N/A 0.58 ppb (7) N/A 11.0 μg/m3 (46) 64.0
 
Nov. 30, 2020, midnight 43.0 ppb (41) 12.0 ppb (12) N/A 31.0 ppb (30) N/A 0.0 ppb (0) N/A 0.39 ppb (5) N/A 11.0 μg/m3 (46) 46.0
 
Nov. 29, 2020, 11 p.m. 51.0 ppb (49) 19.0 ppb (18) N/A 32.0 ppb (31) N/A 0.0 ppb (0) N/A 0.5 ppb (6) N/A 9.0 μg/m3 (38) 49.0
 
Nov. 29, 2020, 10 p.m. 53.0 ppb (50) 18.0 ppb (17) N/A 35.0 ppb (34) N/A 0.0 ppb (0) N/A 0.53 ppb (6) N/A 6.0 μg/m3 (25) 50.0
 
Nov. 29, 2020, 9 p.m. 27.0 ppb (26) 6.0 ppb (6) N/A 21.0 ppb (20) N/A 0.0 ppb (0) N/A 0.36 ppb (5) N/A 1.0 μg/m3 (5) 26.0
 
Nov. 29, 2020, 8 p.m. 10.0 ppb (10) 4.0 ppb (4) N/A 6.0 ppb (6) N/A 0.0 ppb (0) N/A 0.27 ppb (4) N/A 1.0 μg/m3 (5) 10.0
 
Nov. 29, 2020, 7 p.m. 5.0 ppb (5) 3.0 ppb (3) N/A 3.0 ppb (3) N/A 0.0 ppb (0) N/A 0.21 ppb (3) N/A 2.0 μg/m3 (9) 9.0
 
Nov. 29, 2020, 6 p.m. 4.0 ppb (4) 2.0 ppb (2) N/A 2.0 ppb (2) N/A 0.0 ppb (0) N/A 0.23 ppb (3) N/A 4.0 μg/m3 (17) 17.0
 
Nov. 29, 2020, 5 p.m. 4.0 ppb (4) 2.0 ppb (2) N/A 2.0 ppb (2) N/A 0.0 ppb (0) N/A 0.23 ppb (3) N/A 4.0 μg/m3 (17) 17.0
 
Nov. 29, 2020, 4 p.m. 5.0 ppb (5) 3.0 ppb (3) N/A 2.0 ppb (2) N/A 0.0 ppb (0) N/A 0.22 ppb (3) N/A 7.0 μg/m3 (30) 30.0
 
Nov. 29, 2020, 3 p.m. 6.0 ppb (6) 4.0 ppb (4) N/A 2.0 ppb (2) N/A 0.0 ppb (0) N/A 0.21 ppb (3) N/A 13.0 μg/m3 (53) 53.0
 
Nov. 29, 2020, 2 p.m. 17.0 ppb (17) 8.0 ppb (8) N/A 10.0 ppb (10) N/A 0.0 ppb (0) N/A 0.26 ppb (4) N/A 13.0 μg/m3 (53) 53.0
 
Nov. 29, 2020, 1 p.m. 24.0 ppb (23) 11.0 ppb (11) N/A 13.0 ppb (13) N/A 0.0 ppb (0) N/A 0.27 ppb (4) N/A 8.0 μg/m3 (34) 34.0
 
Nov. 29, 2020, noon 23.0 ppb (22) 7.0 ppb (7) N/A 16.0 ppb (16) N/A 0.0 ppb (0) N/A 0.27 ppb (4) N/A 5.0 μg/m3 (21) 22.0
 
Nov. 29, 2020, 11 a.m. 14.0 ppb (14) 3.0 ppb (3) N/A 12.0 ppb (12) N/A 0.0 ppb (0) N/A 0.24 ppb (3) N/A 5.0 μg/m3 (21) 21.0
 
Nov. 29, 2020, 10 a.m. 2.0 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) N/A 0.17 ppb (3) N/A 4.0 μg/m3 (17) 17.0
 
Nov. 29, 2020, 9 a.m. 3.0 ppb (3) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) N/A 0.18 ppb (3) N/A 3.0 μg/m3 (13) 13.0
 
Nov. 29, 2020, 8 a.m. 3.0 ppb (3) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) N/A 0.17 ppb (3) N/A 5.0 μg/m3 (21) 21.0
 
Nov. 29, 2020, 7 a.m. 3.0 ppb (3) 0.0 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) N/A 0.16 ppb (3) N/A 6.0 μg/m3 (25) 25.0
 
Nov. 29, 2020, 6 a.m. 2.0 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) N/A 0.17 ppb (3) N/A 7.0 μg/m3 (30) 30.0
 
Nov. 29, 2020, 5 a.m. 11.0 ppb (11) 2.0 ppb (2) N/A 9.0 ppb (9) N/A 0.0 ppb (0) N/A 0.2 ppb (3) N/A 6.0 μg/m3 (25) 25.0
 
Nov. 29, 2020, 4 a.m. 11.0 ppb (11) 2.0 ppb (2) N/A 8.0 ppb (8) N/A 0.0 ppb (0) N/A 0.25 ppb (3) N/A 3.0 μg/m3 (13) 13.0
 
Nov. 29, 2020, 3 a.m. 5.0 ppb (5) 0.0 ppb (0) N/A 4.0 ppb (4) N/A 0.0 ppb (0) N/A 0.2 ppb (3) N/A 1.0 μg/m3 (5) 5.0
 
Nov. 29, 2020, 2 a.m. 4.0 ppb (4) 1.0 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) N/A 0.2 ppb (3) N/A 3.0 μg/m3 (13) 13.0
 
Nov. 29, 2020, 1 a.m. 6.0 ppb (6) 1.0 ppb (1) N/A 5.0 ppb (5) N/A 0.0 ppb (0) N/A 0.21 ppb (3) N/A 5.0 μg/m3 (21) 21.0
 
Nov. 29, 2020, midnight 9.0 ppb (9) 3.0 ppb (3) N/A 6.0 ppb (6) N/A 0.0 ppb (0) N/A 0.24 ppb (3) N/A 5.0 μg/m3 (21) 21.0
 
Nov. 28, 2020, 11 p.m. 4.0 ppb (4) 2.0 ppb (2) N/A 2.0 ppb (2) N/A 0.0 ppb (0) N/A 0.2 ppb (3) N/A 5.0 μg/m3 (21) 21.0
 
Nov. 28, 2020, 10 p.m. 5.0 ppb (5) 2.0 ppb (2) N/A 2.0 ppb (2) N/A 0.0 ppb (0) N/A 0.2 ppb (3) N/A 4.0 μg/m3 (17) 17.0
 
Nov. 28, 2020, 9 p.m. 5.0 ppb (5) 2.0 ppb (2) N/A 3.0 ppb (3) N/A 0.0 ppb (0) N/A 0.21 ppb (3) N/A 4.0 μg/m3 (17) 17.0
 
Nov. 28, 2020, 8 p.m. 5.0 ppb (5) 3.0 ppb (3) N/A 2.0 ppb (2) N/A 0.0 ppb (0) N/A 0.23 ppb (3) N/A 6.0 μg/m3 (25) 25.0
 
Nov. 28, 2020, 7 p.m. 7.0 ppb (7) 3.0 ppb (3) N/A 4.0 ppb (4) N/A 0.0 ppb (0) N/A 0.23 ppb (3) N/A 8.0 μg/m3 (34) 34.0
 
Nov. 28, 2020, 6 p.m. 4.0 ppb (4) 2.0 ppb (2) N/A 2.0 ppb (2) N/A 0.0 ppb (0) N/A 0.2 ppb (3) N/A 5.0 μg/m3 (21) 21.0
 
Nov. 28, 2020, 5 p.m. 4.0 ppb (4) 2.0 ppb (2) N/A 2.0 ppb (2) N/A 0.0 ppb (0) N/A 0.24 ppb (3) N/A 6.0 μg/m3 (25) 25.0
 
Nov. 28, 2020, 4 p.m. 4.0 ppb (4) 3.0 ppb (3) N/A 2.0 ppb (2) N/A 0.0 ppb (0) N/A 0.24 ppb (3) N/A 7.0 μg/m3 (30) 30.0
 
Nov. 28, 2020, 3 p.m. 7.0 ppb (7) 4.0 ppb (4) N/A 3.0 ppb (3) N/A 0.0 ppb (0) N/A 0.26 ppb (4) N/A 5.0 μg/m3 (21) 21.0
 
Nov. 28, 2020, 2 p.m. 10.0 ppb (10) 6.0 ppb (6) N/A 5.0 ppb (5) N/A 0.0 ppb (0) N/A 0.32 ppb (4) N/A 5.0 μg/m3 (21) 21.0
 
Nov. 28, 2020, 1 p.m. 14.0 ppb (14) 6.0 ppb (6) N/A 9.0 ppb (9) N/A 0.0 ppb (0) N/A 0.33 ppb (4) N/A 6.0 μg/m3 (25) 25.0
 
Nov. 28, 2020, noon 29.0 ppb (28) 11.0 ppb (11) N/A 17.0 ppb (17) N/A 0.0 ppb (0) N/A 0.35 ppb (4) N/A 7.0 μg/m3 (30) 30.0
 
Nov. 28, 2020, 11 a.m. 27.0 ppb (26) 9.0 ppb (9) N/A 18.0 ppb (17) N/A 0.0 ppb (0) N/A 0.29 ppb (4) N/A 6.0 μg/m3 (25) 26.0
 
Nov. 28, 2020, 10 a.m. 12.0 ppb (12) 2.0 ppb (2) N/A 10.0 ppb (10) N/A 0.0 ppb (0) N/A 0.29 ppb (4) N/A 3.0 μg/m3 (13) 13.0
 
Nov. 28, 2020, 9 a.m. 12.0 ppb (12) 2.0 ppb (2) N/A 10.0 ppb (10) N/A 0.0 ppb (0) N/A 0.26 ppb (4) N/A 1.0 μg/m3 (5) 12.0
 
Nov. 28, 2020, 8 a.m. 20.0 ppb (19) 4.0 ppb (4) N/A 16.0 ppb (16) N/A 0.0 ppb (0) N/A 0.25 ppb (3) N/A 6.0 μg/m3 (25) 25.0
 
Nov. 28, 2020, 7 a.m. 8.0 ppb (8) 0.0 ppb (0) N/A 8.0 ppb (8) N/A 0.0 ppb (0) N/A 0.23 ppb (3) N/A 13.0 μg/m3 (53) 53.0
 
Nov. 28, 2020, 6 a.m. 14.0 ppb (14) 2.0 ppb (2) N/A 12.0 ppb (12) N/A 0.0 ppb (0) N/A 0.25 ppb (3) N/A 9.0 μg/m3 (38) 38.0
 
Nov. 28, 2020, 5 a.m. 29.0 ppb (28) 10.0 ppb (10) N/A 19.0 ppb (18) N/A 0.0 ppb (0) N/A 0.37 ppb (5) N/A 9.0 μg/m3 (38) 38.0
 
Nov. 28, 2020, 4 a.m. 31.0 ppb (30) 11.0 ppb (11) N/A 19.0 ppb (18) N/A 0.0 ppb (0) N/A 0.45 ppb (6) N/A 10.0 μg/m3 (42) 42.0
 
Nov. 28, 2020, 3 a.m. 20.0 ppb (19) 5.0 ppb (5) N/A 15.0 ppb (15) N/A 0.0 ppb (0) N/A 0.51 ppb (6) N/A 15.0 μg/m3 (58) 58.0
 
Nov. 28, 2020, 2 a.m. 14.0 ppb (14) 3.0 ppb (3) N/A 12.0 ppb (12) N/A 0.0 ppb (0) N/A 0.37 ppb (5) N/A 9.0 μg/m3 (38) 38.0
 
Nov. 28, 2020, 1 a.m. 15.0 ppb (15) 5.0 ppb (5) N/A 10.0 ppb (10) N/A 0.0 ppb (0) N/A 0.33 ppb (4) N/A 10.0 μg/m3 (42) 42.0
 
Nov. 28, 2020, midnight 14.0 ppb (14) 5.0 ppb (5) N/A 10.0 ppb (10) N/A 0.0 ppb (0) N/A 0.35 ppb (4) N/A 6.0 μg/m3 (25) 25.0
 
Nov. 27, 2020, 11 p.m. 14.0 ppb (14) 5.0 ppb (5) N/A 9.0 ppb (9) N/A 0.0 ppb (0) N/A 0.43 ppb (5) N/A 3.0 μg/m3 (13) 14.0
 
Nov. 27, 2020, 10 p.m. 19.0 ppb (18) 8.0 ppb (8) N/A 11.0 ppb (11) N/A 0.0 ppb (0) N/A 0.43 ppb (5) N/A 3.0 μg/m3 (13) 18.0
 
Nov. 27, 2020, 9 p.m. 17.0 ppb (17) 8.0 ppb (8) N/A 9.0 ppb (9) N/A 0.0 ppb (0) N/A 0.43 ppb (5) N/A 5.0 μg/m3 (21) 21.0
 
Nov. 27, 2020, 8 p.m. 16.0 ppb (16) 8.0 ppb (8) N/A 8.0 ppb (8) N/A 0.0 ppb (0) N/A 0.38 ppb (5) N/A 1.0 μg/m3 (5) 16.0
 
Nov. 27, 2020, 7 p.m. 9.0 ppb (9) 5.0 ppb (5) N/A 4.0 ppb (4) N/A 0.0 ppb (0) N/A 0.3 ppb (4) N/A -1.0 μg/m3 (0) 9.0
 
Nov. 27, 2020, 6 p.m. 5.0 ppb (5) 3.0 ppb (3) N/A 2.0 ppb (2) N/A 0.0 ppb (0) N/A 0.27 ppb (4) N/A 0.0 μg/m3 (0) 5.0