ID: 2982

AQSQID: 250130018

Site Name: Springfieldsp

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

Updated: Sept. 25, 2020, 8:39 a.m.

Location: Springfield (Liberty Heights), MA

Reporting: True, Located: True

Current AQI: 69.0

Springfield (Liberty Heights) MA, US: 42.120248, -72.58499

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
Sept. 25, 2020, 6 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) N/A N/A N/A 21.0 μg/m3 (69) 69.0
 
Sept. 25, 2020, 5 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) N/A N/A N/A 24.0 μg/m3 (76) 76.0
 
Sept. 25, 2020, 4 a.m. 35.0 ppb (32) 5.0 ppb (5) N/A 31.0 ppb (29) N/A N/A N/A N/A N/A 18.0 μg/m3 (63) 63.0
 
Sept. 25, 2020, 3 a.m. 43.0 ppb (40) 10.0 ppb (9) N/A 33.0 ppb (31) N/A N/A N/A N/A N/A 21.0 μg/m3 (69) 69.0
 
Sept. 25, 2020, 2 a.m. 46.0 ppb (43) 11.0 ppb (10) N/A 35.0 ppb (32) N/A N/A N/A N/A N/A 17.0 μg/m3 (61) 61.0
 
Sept. 25, 2020, 1 a.m. 71.0 ppb (68) 35.0 ppb (32) N/A 37.0 ppb (34) N/A 1.0 ppb (1) N/A N/A N/A 19.0 μg/m3 (65) 68.0
 
Sept. 25, 2020, midnight 52.0 ppb (48) 16.0 ppb (15) N/A 37.0 ppb (34) N/A 0.0 ppb (0) N/A N/A N/A 12.0 μg/m3 (50) 50.0
 
Sept. 24, 2020, 11 p.m. 26.0 ppb (24) 3.0 ppb (3) N/A 23.0 ppb (21) N/A 0.0 ppb (0) N/A N/A N/A 8.0 μg/m3 (33) 33.0
 
Sept. 24, 2020, 10 p.m. 18.0 ppb (17) 3.0 ppb (3) N/A 14.0 ppb (13) N/A 0.0 ppb (0) N/A N/A N/A 12.0 μg/m3 (50) 50.0
 
Sept. 24, 2020, 9 p.m. 11.0 ppb (10) 3.0 ppb (3) N/A 8.0 ppb (7) N/A 0.0 ppb (0) N/A N/A N/A 13.0 μg/m3 (52) 52.0
 
Sept. 24, 2020, 8 p.m. 10.0 ppb (9) 3.0 ppb (3) N/A 7.0 ppb (6) N/A 0.0 ppb (0) N/A N/A N/A 9.0 μg/m3 (38) 38.0
 
Sept. 24, 2020, 7 p.m. 10.0 ppb (9) 3.0 ppb (3) N/A 7.0 ppb (6) N/A 0.0 ppb (0) N/A N/A N/A 6.0 μg/m3 (25) 25.0
 
Sept. 24, 2020, 6 p.m. 10.0 ppb (9) 3.0 ppb (3) N/A 7.0 ppb (6) N/A 0.0 ppb (0) N/A N/A N/A 9.0 μg/m3 (38) 38.0
 
Sept. 24, 2020, 5 p.m. 10.0 ppb (9) 2.0 ppb (2) N/A 8.0 ppb (7) N/A 0.0 ppb (0) N/A N/A N/A 15.0 μg/m3 (56) 56.0
 
Sept. 24, 2020, 4 p.m. 13.0 ppb (12) 3.0 ppb (3) N/A 10.0 ppb (9) N/A 0.0 ppb (0) N/A N/A N/A N/A 12.0
 
Sept. 24, 2020, 3 p.m. 13.0 ppb (12) 4.0 ppb (4) N/A 10.0 ppb (9) N/A 0.0 ppb (0) N/A N/A N/A 13.0 μg/m3 (52) 52.0
 
Sept. 24, 2020, 2 p.m. 16.0 ppb (15) 5.0 ppb (5) N/A 11.0 ppb (10) N/A 0.0 ppb (0) N/A N/A N/A 13.0 μg/m3 (52) 52.0
 
Sept. 24, 2020, 1 p.m. 31.0 ppb (29) 14.0 ppb (13) N/A 17.0 ppb (16) N/A 1.0 ppb (1) N/A N/A N/A 17.0 μg/m3 (61) 61.0
 
Sept. 24, 2020, noon 46.0 ppb (43) 24.0 ppb (22) N/A 22.0 ppb (20) N/A 0.0 ppb (0) N/A N/A N/A 16.0 μg/m3 (59) 59.0
 
Sept. 24, 2020, 11 a.m. 44.0 ppb (41) 21.0 ppb (19) N/A 23.0 ppb (21) N/A 0.0 ppb (0) N/A N/A N/A 17.0 μg/m3 (61) 61.0
 
Sept. 24, 2020, 10 a.m. 37.0 ppb (34) 14.0 ppb (13) N/A 23.0 ppb (21) N/A 0.0 ppb (0) N/A N/A N/A 19.0 μg/m3 (65) 65.0
 
Sept. 24, 2020, 9 a.m. 28.0 ppb (26) 7.0 ppb (6) N/A 21.0 ppb (19) N/A 0.0 ppb (0) N/A N/A N/A 17.0 μg/m3 (61) 61.0
 
Sept. 24, 2020, 8 a.m. 29.0 ppb (27) 7.0 ppb (6) N/A 22.0 ppb (20) N/A 0.0 ppb (0) N/A N/A N/A 12.0 μg/m3 (50) 50.0
 
Sept. 24, 2020, 7 a.m. 21.0 ppb (19) 3.0 ppb (3) N/A 19.0 ppb (18) N/A 0.0 ppb (0) N/A N/A N/A 16.0 μg/m3 (59) 59.0
 
Sept. 24, 2020, 6 a.m. 21.0 ppb (19) 3.0 ppb (3) N/A 18.0 ppb (17) N/A 0.0 ppb (0) N/A N/A N/A 15.0 μg/m3 (56) 56.0
 
Sept. 24, 2020, 5 a.m. 10.0 ppb (9) 0.0 ppb (0) N/A 10.0 ppb (9) N/A 0.0 ppb (0) N/A N/A N/A 9.0 μg/m3 (38) 38.0
 
Sept. 24, 2020, 4 a.m. 11.0 ppb (10) 2.0 ppb (2) N/A 9.0 ppb (8) N/A 0.0 ppb (0) N/A N/A N/A 11.0 μg/m3 (46) 46.0
 
Sept. 24, 2020, 3 a.m. 7.0 ppb (6) 0.0 ppb (0) N/A 6.0 ppb (6) N/A 0.0 ppb (0) N/A N/A N/A 12.0 μg/m3 (50) 50.0
 
Sept. 24, 2020, 2 a.m. 5.0 ppb (5) 1.0 ppb (1) N/A 4.0 ppb (4) N/A 0.0 ppb (0) N/A N/A N/A 11.0 μg/m3 (46) 46.0
 
Sept. 24, 2020, 1 a.m. 7.0 ppb (6) 1.0 ppb (1) N/A 6.0 ppb (6) N/A 0.0 ppb (0) N/A N/A N/A 12.0 μg/m3 (50) 50.0
 
Sept. 24, 2020, midnight 8.0 ppb (7) 1.0 ppb (1) N/A 7.0 ppb (6) N/A 0.0 ppb (0) N/A N/A N/A 13.0 μg/m3 (52) 52.0
 
Sept. 23, 2020, 11 p.m. 9.0 ppb (8) 1.0 ppb (1) N/A 8.0 ppb (7) N/A 0.0 ppb (0) N/A N/A N/A 12.0 μg/m3 (50) 50.0
 
Sept. 23, 2020, 10 p.m. 10.0 ppb (9) 2.0 ppb (2) N/A 9.0 ppb (8) N/A 0.0 ppb (0) N/A N/A N/A 12.0 μg/m3 (50) 50.0
 
Sept. 23, 2020, 9 p.m. 7.0 ppb (6) 2.0 ppb (2) N/A 5.0 ppb (5) N/A 0.0 ppb (0) N/A N/A N/A 11.0 μg/m3 (46) 46.0
 
Sept. 23, 2020, 8 p.m. 6.0 ppb (6) 1.0 ppb (1) N/A 4.0 ppb (4) N/A 0.0 ppb (0) N/A N/A N/A 10.0 μg/m3 (42) 42.0
 
Sept. 23, 2020, 7 p.m. 5.0 ppb (5) 1.0 ppb (1) N/A 4.0 ppb (4) N/A 0.0 ppb (0) N/A N/A N/A 10.0 μg/m3 (42) 42.0
 
Sept. 23, 2020, 6 p.m. 5.0 ppb (5) 1.0 ppb (1) N/A 4.0 ppb (4) N/A 0.0 ppb (0) N/A N/A N/A 11.0 μg/m3 (46) 46.0
 
Sept. 23, 2020, 5 p.m. 6.0 ppb (6) 2.0 ppb (2) N/A 4.0 ppb (4) N/A 0.0 ppb (0) N/A N/A N/A 12.0 μg/m3 (50) 50.0
 
Sept. 23, 2020, 4 p.m. 5.0 ppb (5) 2.0 ppb (2) N/A 3.0 ppb (3) N/A 0.0 ppb (0) N/A N/A N/A 11.0 μg/m3 (46) 46.0
 
Sept. 23, 2020, 3 p.m. 6.0 ppb (6) 2.0 ppb (2) N/A 4.0 ppb (4) N/A 0.0 ppb (0) N/A N/A N/A 11.0 μg/m3 (46) 46.0
 
Sept. 23, 2020, 2 p.m. 16.0 ppb (15) 6.0 ppb (6) N/A 11.0 ppb (10) N/A 0.0 ppb (0) N/A N/A N/A 7.0 μg/m3 (29) 29.0
 
Sept. 23, 2020, 1 p.m. 24.0 ppb (22) 9.0 ppb (8) N/A 15.0 ppb (14) N/A 1.0 ppb (1) N/A N/A N/A 6.0 μg/m3 (25) 25.0
 
Sept. 23, 2020, noon 39.0 ppb (36) 18.0 ppb (17) N/A 20.0 ppb (19) N/A 0.0 ppb (0) N/A N/A N/A 8.0 μg/m3 (33) 36.0
 
Sept. 23, 2020, 11 a.m. 68.0 ppb (65) 37.0 ppb (34) N/A 31.0 ppb (29) N/A 1.0 ppb (1) N/A N/A N/A 10.0 μg/m3 (42) 65.0
 
Sept. 23, 2020, 10 a.m. 87.0 ppb (85) 52.0 ppb (48) N/A 35.0 ppb (32) N/A 1.0 ppb (1) N/A N/A N/A 10.0 μg/m3 (42) 85.0
 
Sept. 23, 2020, 9 a.m. 55.0 ppb (51) 25.0 ppb (23) N/A 29.0 ppb (27) N/A 0.0 ppb (0) N/A N/A N/A 9.0 μg/m3 (38) 51.0
 
Sept. 23, 2020, 8 a.m. 19.0 ppb (18) 2.0 ppb (2) N/A 17.0 ppb (16) N/A 0.0 ppb (0) N/A N/A N/A 6.0 μg/m3 (25) 25.0
 
Sept. 23, 2020, 7 a.m. 18.0 ppb (17) 3.0 ppb (3) N/A 15.0 ppb (14) N/A 0.0 ppb (0) N/A N/A N/A 6.0 μg/m3 (25) 25.0
 
Sept. 23, 2020, 6 a.m. 7.0 ppb (6) 1.0 ppb (1) N/A 6.0 ppb (6) N/A 0.0 ppb (0) N/A N/A N/A 6.0 μg/m3 (25) 25.0
 
Sept. 23, 2020, 5 a.m. 3.0 ppb (3) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) N/A N/A N/A 6.0 μg/m3 (25) 25.0
 
Sept. 23, 2020, 3 a.m. 10.0 ppb (9) 1.0 ppb (1) N/A 9.0 ppb (8) N/A 0.0 ppb (0) N/A N/A N/A 6.0 μg/m3 (25) 25.0
 
Sept. 23, 2020, 2 a.m. 7.0 ppb (6) 2.0 ppb (2) N/A 5.0 ppb (5) N/A 0.0 ppb (0) N/A N/A N/A 6.0 μg/m3 (25) 25.0
 
Sept. 23, 2020, 1 a.m. 6.0 ppb (6) 1.0 ppb (1) N/A 4.0 ppb (4) N/A 0.0 ppb (0) N/A N/A N/A 4.0 μg/m3 (17) 17.0
 
Sept. 23, 2020, midnight 6.0 ppb (6) 2.0 ppb (2) N/A 4.0 ppb (4) N/A 0.0 ppb (0) N/A N/A N/A 5.0 μg/m3 (21) 21.0
 
Sept. 22, 2020, 11 p.m. 7.0 ppb (6) 2.0 ppb (2) N/A 5.0 ppb (5) N/A 0.0 ppb (0) N/A N/A N/A 1.0 μg/m3 (4) 6.0
 
Sept. 22, 2020, 10 p.m. 8.0 ppb (7) 3.0 ppb (3) N/A 5.0 ppb (5) N/A 0.0 ppb (0) N/A N/A N/A 0.0 μg/m3 (0) 7.0
 
Sept. 22, 2020, 9 p.m. 6.0 ppb (6) 2.0 ppb (2) N/A 4.0 ppb (4) N/A 0.0 ppb (0) N/A N/A N/A 5.0 μg/m3 (21) 21.0
 
Sept. 22, 2020, 8 p.m. 6.0 ppb (6) 2.0 ppb (2) N/A 4.0 ppb (4) N/A 0.0 ppb (0) N/A N/A N/A 5.0 μg/m3 (21) 21.0
 
Sept. 22, 2020, 7 p.m. 6.0 ppb (6) 3.0 ppb (3) N/A 3.0 ppb (3) N/A 0.0 ppb (0) N/A N/A N/A 2.0 μg/m3 (8) 8.0
 
Sept. 22, 2020, 6 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) N/A N/A N/A 4.0 μg/m3 (17) 17.0
 
Sept. 22, 2020, 5 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) N/A N/A N/A 4.0 μg/m3 (17) 17.0
 
Sept. 22, 2020, 4 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) N/A N/A N/A 4.0 μg/m3 (17) 17.0
 
Sept. 22, 2020, 3 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) N/A N/A N/A 3.0 μg/m3 (12) 12.0
 
Sept. 22, 2020, 2 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) N/A N/A N/A 4.0 μg/m3 (17) 17.0
 
Sept. 22, 2020, 1 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) N/A N/A N/A 7.0 μg/m3 (29) 29.0
 
Sept. 22, 2020, noon N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 8.0 μg/m3 (33) 33.0
 
Sept. 22, 2020, 11 a.m. 31.0 ppb (29) 18.0 ppb (17) N/A 13.0 ppb (12) N/A 0.0 ppb (0) N/A N/A N/A 8.0 μg/m3 (33) 33.0
 
Sept. 22, 2020, 10 a.m. 18.0 ppb (17) 7.0 ppb (6) N/A 11.0 ppb (10) N/A 0.0 ppb (0) N/A N/A N/A 9.0 μg/m3 (38) 38.0
 
Sept. 22, 2020, 9 a.m. 18.0 ppb (17) 7.0 ppb (6) N/A 11.0 ppb (10) N/A 0.0 ppb (0) N/A N/A N/A 7.0 μg/m3 (29) 29.0
 
Sept. 22, 2020, 8 a.m. 13.0 ppb (12) 3.0 ppb (3) N/A 10.0 ppb (9) N/A 0.0 ppb (0) N/A N/A N/A 6.0 μg/m3 (25) 25.0
 
Sept. 22, 2020, 7 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) N/A N/A N/A 8.0 μg/m3 (33) 33.0
 
Sept. 22, 2020, 6 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) N/A N/A N/A 7.0 μg/m3 (29) 29.0
 
Sept. 22, 2020, 5 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) N/A N/A N/A 9.0 μg/m3 (38) 38.0
 
Sept. 22, 2020, 4 a.m. 20.0 ppb (19) 3.0 ppb (3) N/A 17.0 ppb (16) N/A N/A N/A N/A N/A 10.0 μg/m3 (42) 42.0
 
Sept. 22, 2020, 3 a.m. 24.0 ppb (22) 5.0 ppb (5) N/A 18.0 ppb (17) N/A N/A N/A N/A N/A 11.0 μg/m3 (46) 46.0
 
Sept. 22, 2020, 2 a.m. 28.0 ppb (26) 7.0 ppb (6) N/A 21.0 ppb (19) N/A N/A N/A N/A N/A 10.0 μg/m3 (42) 42.0
 
Sept. 22, 2020, 1 a.m. 40.0 ppb (37) 13.0 ppb (12) N/A 26.0 ppb (24) N/A 0.0 ppb (0) N/A N/A N/A 12.0 μg/m3 (50) 50.0
 
Sept. 22, 2020, midnight 50.0 ppb (46) 23.0 ppb (21) N/A 27.0 ppb (25) N/A 0.0 ppb (0) N/A N/A N/A 11.0 μg/m3 (46) 46.0
 
Sept. 21, 2020, 11 p.m. 44.0 ppb (41) 17.0 ppb (16) N/A 27.0 ppb (25) N/A 0.0 ppb (0) N/A N/A N/A 12.0 μg/m3 (50) 50.0
 
Sept. 21, 2020, 10 p.m. 10.0 ppb (9) 1.0 ppb (1) N/A 9.0 ppb (8) N/A 0.0 ppb (0) N/A N/A N/A 4.0 μg/m3 (17) 17.0
 
Sept. 21, 2020, 9 p.m. 6.0 ppb (6) 2.0 ppb (2) N/A 4.0 ppb (4) N/A 0.0 ppb (0) N/A N/A N/A 5.0 μg/m3 (21) 21.0
 
Sept. 21, 2020, 8 p.m. 6.0 ppb (6) 2.0 ppb (2) N/A 3.0 ppb (3) N/A 0.0 ppb (0) N/A N/A N/A 4.0 μg/m3 (17) 17.0
 
Sept. 21, 2020, 7 p.m. 5.0 ppb (5) 2.0 ppb (2) N/A 3.0 ppb (3) N/A 0.0 ppb (0) N/A N/A N/A 5.0 μg/m3 (21) 21.0
 
Sept. 21, 2020, 6 p.m. 7.0 ppb (6) 4.0 ppb (4) N/A 3.0 ppb (3) N/A 0.0 ppb (0) N/A N/A N/A 4.0 μg/m3 (17) 17.0
 
Sept. 21, 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 N/A N/A 2.0 μg/m3 (8) 8.0
 
Sept. 21, 2020, 4 p.m. 5.0 ppb (5) 3.0 ppb (3) N/A 3.0 ppb (3) N/A 0.0 ppb (0) N/A N/A N/A 3.0 μg/m3 (12) 12.0
 
Sept. 21, 2020, 3 p.m. 7.0 ppb (6) 4.0 ppb (4) N/A 3.0 ppb (3) N/A 0.0 ppb (0) N/A N/A N/A 4.0 μg/m3 (17) 17.0
 
Sept. 21, 2020, 2 p.m. 8.0 ppb (7) 4.0 ppb (4) N/A 4.0 ppb (4) N/A 0.0 ppb (0) N/A N/A N/A 4.0 μg/m3 (17) 17.0
 
Sept. 21, 2020, 1 p.m. 12.0 ppb (11) 6.0 ppb (6) N/A 5.0 ppb (5) N/A 0.0 ppb (0) N/A N/A N/A 7.0 μg/m3 (29) 29.0
 
Sept. 21, 2020, noon 15.0 ppb (14) 8.0 ppb (7) N/A 7.0 ppb (6) N/A 0.0 ppb (0) N/A N/A N/A 8.0 μg/m3 (33) 33.0
 
Sept. 21, 2020, 11 a.m. 14.0 ppb (13) 7.0 ppb (6) N/A 8.0 ppb (7) N/A 0.0 ppb (0) N/A N/A N/A 9.0 μg/m3 (38) 38.0
 
Sept. 21, 2020, 10 a.m. 16.0 ppb (15) 6.0 ppb (6) N/A 11.0 ppb (10) N/A 0.0 ppb (0) N/A N/A N/A 12.0 μg/m3 (50) 50.0
 
Sept. 21, 2020, 9 a.m. 14.0 ppb (13) 4.0 ppb (4) N/A 10.0 ppb (9) N/A 0.0 ppb (0) N/A N/A N/A 6.0 μg/m3 (25) 25.0
 
Sept. 21, 2020, 8 a.m. 9.0 ppb (8) 1.0 ppb (1) N/A 7.0 ppb (6) N/A 0.0 ppb (0) N/A N/A N/A 7.0 μg/m3 (29) 29.0
 
Sept. 21, 2020, 7 a.m. 8.0 ppb (7) 1.0 ppb (1) N/A 7.0 ppb (6) N/A 0.0 ppb (0) N/A N/A N/A 8.0 μg/m3 (33) 33.0
 
Sept. 21, 2020, 6 a.m. 11.0 ppb (10) 2.0 ppb (2) N/A 10.0 ppb (9) N/A 0.0 ppb (0) N/A N/A N/A 9.0 μg/m3 (38) 38.0
 
Sept. 21, 2020, 5 a.m. 13.0 ppb (12) 1.0 ppb (1) N/A 12.0 ppb (11) N/A 0.0 ppb (0) N/A N/A N/A 8.0 μg/m3 (33) 33.0
 
Sept. 21, 2020, 4 a.m. 16.0 ppb (15) 2.0 ppb (2) N/A 14.0 ppb (13) N/A 0.0 ppb (0) N/A N/A N/A 7.0 μg/m3 (29) 29.0
 
Sept. 21, 2020, 3 a.m. 14.0 ppb (13) 2.0 ppb (2) N/A 12.0 ppb (11) N/A 0.0 ppb (0) N/A N/A N/A 8.0 μg/m3 (33) 33.0
 
Sept. 21, 2020, 2 a.m. 14.0 ppb (13) 4.0 ppb (4) N/A 11.0 ppb (10) N/A 0.0 ppb (0) N/A N/A N/A 11.0 μg/m3 (46) 46.0
 
Sept. 21, 2020, 1 a.m. 23.0 ppb (21) 6.0 ppb (6) N/A 17.0 ppb (16) N/A 0.0 ppb (0) N/A N/A N/A 14.0 μg/m3 (54) 54.0
 
Sept. 21, 2020, midnight 29.0 ppb (27) 8.0 ppb (7) N/A 21.0 ppb (19) N/A 0.0 ppb (0) N/A N/A N/A 12.0 μg/m3 (50) 50.0
 
Sept. 20, 2020, 11 p.m. 21.0 ppb (19) 5.0 ppb (5) N/A 16.0 ppb (15) N/A 0.0 ppb (0) N/A N/A N/A 8.0 μg/m3 (33) 33.0
 
Sept. 20, 2020, 10 p.m. 10.0 ppb (9) 3.0 ppb (3) N/A 7.0 ppb (6) N/A 0.0 ppb (0) N/A N/A N/A 3.0 μg/m3 (12) 12.0
 
Sept. 20, 2020, 9 p.m. 6.0 ppb (6) 2.0 ppb (2) N/A 3.0 ppb (3) N/A 0.0 ppb (0) N/A N/A N/A 2.0 μg/m3 (8) 8.0
 
Sept. 20, 2020, 8 p.m. 4.0 ppb (4) 2.0 ppb (2) N/A 2.0 ppb (2) N/A 0.0 ppb (0) N/A N/A N/A 3.0 μg/m3 (12) 12.0
 
Sept. 20, 2020, 7 p.m. 4.0 ppb (4) 2.0 ppb (2) N/A 2.0 ppb (2) N/A 0.0 ppb (0) N/A N/A N/A 6.0 μg/m3 (25) 25.0
 
Sept. 20, 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 N/A N/A 5.0 μg/m3 (21) 21.0
 
Sept. 20, 2020, 5 p.m. 3.0 ppb (3) 2.0 ppb (2) N/A 2.0 ppb (2) N/A 0.0 ppb (0) N/A N/A N/A 2.0 μg/m3 (8) 8.0
 
Sept. 20, 2020, 4 p.m. 4.0 ppb (4) 2.0 ppb (2) N/A 2.0 ppb (2) N/A 0.0 ppb (0) N/A N/A N/A 4.0 μg/m3 (17) 17.0
 
Sept. 20, 2020, 3 p.m. 4.0 ppb (4) 2.0 ppb (2) N/A 2.0 ppb (2) N/A 0.0 ppb (0) N/A N/A N/A 7.0 μg/m3 (29) 29.0
 
Sept. 20, 2020, 2 p.m. 4.0 ppb (4) 2.0 ppb (2) N/A 2.0 ppb (2) N/A 0.0 ppb (0) N/A N/A N/A 6.0 μg/m3 (25) 25.0
 
Sept. 20, 2020, 1 p.m. 5.0 ppb (5) 2.0 ppb (2) N/A 3.0 ppb (3) N/A 0.0 ppb (0) N/A N/A N/A 7.0 μg/m3 (29) 29.0
 
Sept. 20, 2020, noon 5.0 ppb (5) 2.0 ppb (2) N/A 3.0 ppb (3) N/A 0.0 ppb (0) N/A N/A N/A 8.0 μg/m3 (33) 33.0
 
Sept. 20, 2020, 11 a.m. 9.0 ppb (8) 2.0 ppb (2) N/A 7.0 ppb (6) N/A 0.0 ppb (0) N/A N/A N/A 7.0 μg/m3 (29) 29.0
 
Sept. 20, 2020, 10 a.m. 9.0 ppb (8) 2.0 ppb (2) N/A 7.0 ppb (6) N/A 0.0 ppb (0) N/A N/A N/A 6.0 μg/m3 (25) 25.0
 
Sept. 20, 2020, 9 a.m. 4.0 ppb (4) 0.0 ppb (0) N/A 4.0 ppb (4) N/A 0.0 ppb (0) N/A N/A N/A 7.0 μg/m3 (29) 29.0
 
Sept. 20, 2020, 8 a.m. 7.0 ppb (6) 1.0 ppb (1) N/A 6.0 ppb (6) N/A 0.0 ppb (0) N/A N/A N/A 5.0 μg/m3 (21) 21.0
 
Sept. 20, 2020, 7 a.m. 7.0 ppb (6) 1.0 ppb (1) N/A 6.0 ppb (6) N/A 0.0 ppb (0) N/A N/A N/A 6.0 μg/m3 (25) 25.0
 
Sept. 20, 2020, 6 a.m. 3.0 ppb (3) 0.0 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) N/A N/A N/A 4.0 μg/m3 (17) 17.0
 
Sept. 20, 2020, 5 a.m. 4.0 ppb (4) 0.0 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) N/A N/A N/A 7.0 μg/m3 (29) 29.0
 
Sept. 20, 2020, 4 a.m. 8.0 ppb (7) 2.0 ppb (2) N/A 6.0 ppb (6) N/A 0.0 ppb (0) N/A N/A N/A 10.0 μg/m3 (42) 42.0
 
Sept. 20, 2020, 3 a.m. 13.0 ppb (12) 3.0 ppb (3) N/A 10.0 ppb (9) N/A 0.0 ppb (0) N/A N/A N/A 12.0 μg/m3 (50) 50.0
 
Sept. 20, 2020, 2 a.m. 13.0 ppb (12) 3.0 ppb (3) N/A 10.0 ppb (9) N/A 0.0 ppb (0) N/A N/A N/A 15.0 μg/m3 (56) 56.0
 
Sept. 20, 2020, 1 a.m. 16.0 ppb (15) 5.0 ppb (5) N/A 10.0 ppb (9) N/A 0.0 ppb (0) N/A N/A N/A 8.0 μg/m3 (33) 33.0
 
Sept. 20, 2020, midnight 11.0 ppb (10) 4.0 ppb (4) N/A 7.0 ppb (6) N/A 0.0 ppb (0) N/A N/A N/A 10.0 μg/m3 (42) 42.0
 
Sept. 19, 2020, 11 p.m. 15.0 ppb (14) 6.0 ppb (6) N/A 9.0 ppb (8) N/A 0.0 ppb (0) N/A N/A N/A 10.0 μg/m3 (42) 42.0
 
Sept. 19, 2020, 10 p.m. 16.0 ppb (15) 6.0 ppb (6) N/A 10.0 ppb (9) N/A 0.0 ppb (0) N/A N/A N/A 7.0 μg/m3 (29) 29.0
 
Sept. 19, 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 N/A N/A 2.0 μg/m3 (8) 8.0
 
Sept. 19, 2020, 8 p.m. 4.0 ppb (4) 2.0 ppb (2) N/A 2.0 ppb (2) N/A 0.0 ppb (0) N/A N/A N/A 1.0 μg/m3 (4) 4.0
 
Sept. 19, 2020, 7 p.m. 5.0 ppb (5) 2.0 ppb (2) N/A 2.0 ppb (2) N/A 0.0 ppb (0) N/A N/A N/A 2.0 μg/m3 (8) 8.0
 
Sept. 19, 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 N/A N/A 2.0 μg/m3 (8) 8.0
 
Sept. 19, 2020, 5 p.m. 5.0 ppb (5) 3.0 ppb (3) N/A 2.0 ppb (2) N/A 0.0 ppb (0) N/A N/A N/A 2.0 μg/m3 (8) 8.0
 
Sept. 19, 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 N/A N/A 5.0 μg/m3 (21) 21.0
 
Sept. 19, 2020, 3 p.m. 5.0 ppb (5) 2.0 ppb (2) N/A 2.0 ppb (2) N/A 0.0 ppb (0) N/A N/A N/A 4.0 μg/m3 (17) 17.0
 
Sept. 19, 2020, 2 p.m. 5.0 ppb (5) 3.0 ppb (3) N/A 2.0 ppb (2) N/A 0.0 ppb (0) N/A N/A N/A 2.0 μg/m3 (8) 8.0
 
Sept. 19, 2020, 1 p.m. 5.0 ppb (5) 3.0 ppb (3) N/A 2.0 ppb (2) N/A 0.0 ppb (0) N/A N/A N/A 3.0 μg/m3 (12) 12.0
 
Sept. 19, 2020, noon 7.0 ppb (6) 3.0 ppb (3) N/A 3.0 ppb (3) N/A 0.0 ppb (0) N/A N/A N/A 6.0 μg/m3 (25) 25.0
 
Sept. 19, 2020, 11 a.m. 14.0 ppb (13) 5.0 ppb (5) N/A 8.0 ppb (7) N/A 0.0 ppb (0) N/A N/A N/A 9.0 μg/m3 (38) 38.0
 
Sept. 19, 2020, 10 a.m. 13.0 ppb (12) 4.0 ppb (4) N/A 9.0 ppb (8) N/A 0.0 ppb (0) N/A N/A N/A 10.0 μg/m3 (42) 42.0
 
Sept. 19, 2020, 9 a.m. 8.0 ppb (7) 1.0 ppb (1) N/A 6.0 ppb (6) N/A 0.0 ppb (0) N/A N/A N/A 7.0 μg/m3 (29) 29.0
 
Sept. 19, 2020, 8 a.m. 6.0 ppb (6) 2.0 ppb (2) N/A 4.0 ppb (4) N/A 0.0 ppb (0) N/A N/A N/A 4.0 μg/m3 (17) 17.0
 
Sept. 19, 2020, 7 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) N/A N/A N/A 5.0 μg/m3 (21) 21.0
 
Sept. 19, 2020, 6 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) N/A N/A N/A 5.0 μg/m3 (21) 21.0
 
Sept. 19, 2020, 5 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) N/A N/A N/A 6.0 μg/m3 (25) 25.0
 
Sept. 19, 2020, 4 a.m. 5.0 ppb (5) 2.0 ppb (2) N/A 3.0 ppb (3) N/A N/A N/A N/A N/A 6.0 μg/m3 (25) 25.0
 
Sept. 19, 2020, 3 a.m. 3.0 ppb (3) 1.0 ppb (1) N/A 2.0 ppb (2) N/A N/A N/A N/A N/A 7.0 μg/m3 (29) 29.0
 
Sept. 19, 2020, 2 a.m. 3.0 ppb (3) 1.0 ppb (1) N/A 2.0 ppb (2) N/A N/A N/A N/A N/A 8.0 μg/m3 (33) 33.0
 
Sept. 19, 2020, 1 a.m. 4.0 ppb (4) 1.0 ppb (1) N/A 2.0 ppb (2) N/A 0.0 ppb (0) N/A N/A N/A 4.0 μg/m3 (17) 17.0
 
Sept. 19, 2020, midnight 4.0 ppb (4) 1.0 ppb (1) N/A 2.0 ppb (2) N/A 0.0 ppb (0) N/A N/A N/A 4.0 μg/m3 (17) 17.0
 
Sept. 18, 2020, 11 p.m. 8.0 ppb (7) 3.0 ppb (3) N/A 5.0 ppb (5) N/A 0.0 ppb (0) N/A N/A N/A 5.0 μg/m3 (21) 21.0
 
Sept. 18, 2020, 10 p.m. 8.0 ppb (7) 3.0 ppb (3) N/A 5.0 ppb (5) N/A 0.0 ppb (0) N/A N/A N/A 5.0 μg/m3 (21) 21.0
 
Sept. 18, 2020, 9 p.m. 7.0 ppb (6) 3.0 ppb (3) N/A 4.0 ppb (4) N/A 0.0 ppb (0) N/A N/A N/A 9.0 μg/m3 (38) 38.0
 
Sept. 18, 2020, 8 p.m. 6.0 ppb (6) 3.0 ppb (3) N/A 3.0 ppb (3) N/A 0.0 ppb (0) N/A N/A N/A 8.0 μg/m3 (33) 33.0
 
Sept. 18, 2020, 7 p.m. 7.0 ppb (6) 4.0 ppb (4) N/A 3.0 ppb (3) N/A 0.0 ppb (0) N/A N/A N/A 6.0 μg/m3 (25) 25.0
 
Sept. 18, 2020, 6 p.m. 6.0 ppb (6) 4.0 ppb (4) N/A 2.0 ppb (2) N/A 0.0 ppb (0) N/A N/A N/A 7.0 μg/m3 (29) 29.0
 
Sept. 18, 2020, 5 p.m. 7.0 ppb (6) 5.0 ppb (5) N/A 2.0 ppb (2) N/A 0.0 ppb (0) N/A N/A N/A 7.0 μg/m3 (29) 29.0
 
Sept. 18, 2020, 4 p.m. 6.0 ppb (6) 3.0 ppb (3) N/A 3.0 ppb (3) N/A 0.0 ppb (0) N/A N/A N/A 9.0 μg/m3 (38) 38.0
 
Sept. 18, 2020, 3 p.m. 7.0 ppb (6) 4.0 ppb (4) N/A 3.0 ppb (3) N/A 0.0 ppb (0) N/A N/A N/A 8.0 μg/m3 (33) 33.0
 
Sept. 18, 2020, 2 p.m. 6.0 ppb (6) 3.0 ppb (3) N/A 3.0 ppb (3) N/A 0.0 ppb (0) N/A N/A N/A 7.0 μg/m3 (29) 29.0
 
Sept. 18, 2020, 1 p.m. 8.0 ppb (7) 4.0 ppb (4) N/A 3.0 ppb (3) N/A 0.0 ppb (0) N/A N/A N/A 8.0 μg/m3 (33) 33.0
 
Sept. 18, 2020, noon 7.0 ppb (6) 3.0 ppb (3) N/A 3.0 ppb (3) N/A 0.0 ppb (0) N/A N/A N/A 7.0 μg/m3 (29) 29.0
 
Sept. 18, 2020, 11 a.m. 5.0 ppb (5) 2.0 ppb (2) N/A 3.0 ppb (3) N/A 0.0 ppb (0) N/A N/A N/A 9.0 μg/m3 (38) 38.0
 
Sept. 18, 2020, 10 a.m. 5.0 ppb (5) 2.0 ppb (2) N/A 2.0 ppb (2) N/A 0.0 ppb (0) N/A N/A N/A 9.0 μg/m3 (38) 38.0
 
Sept. 18, 2020, 9 a.m. 4.0 ppb (4) 1.0 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) N/A N/A N/A 8.0 μg/m3 (33) 33.0
 
Sept. 18, 2020, 8 a.m. 3.0 ppb (3) 1.0 ppb (1) N/A 2.0 ppb (2) N/A 0.0 ppb (0) N/A N/A N/A 11.0 μg/m3 (46) 46.0
 
Sept. 18, 2020, 7 a.m. 3.0 ppb (3) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) N/A N/A N/A 9.0 μg/m3 (38) 38.0
 
Sept. 18, 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 N/A N/A 9.0 μg/m3 (38) 38.0