ID: 479

AQSQID: 250130008

Site Name: Chicopee

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

Updated: Aug. 1, 2021, 2:55 a.m.

Location: Chicopee (Freeman Knoll), MA

Reporting: True, Located: True

Current AQI: 30.0

Chicopee (Freeman Knoll) MA, US: 42.194401, -72.555603

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
Aug. 1, 2021, 1 a.m. 5.0 ppb (5) 0.0 ppb (0) N/A 4.0 ppb (4) N/A N/A 21.0 ppb (20) N/A N/A 7.0 μg/m3 (30) 30.0
 
Aug. 1, 2021, midnight 2.0 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A N/A 26.0 ppb (25) N/A N/A 5.0 μg/m3 (21) 25.0
 
July 31, 2021, 11 p.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 31.0 ppb (29) N/A N/A 4.0 μg/m3 (17) 29.0
 
July 31, 2021, 10 p.m. 0.0 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A N/A 33.0 ppb (31) N/A N/A 4.0 μg/m3 (17) 31.0
 
July 31, 2021, 9 p.m. 0.0 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A N/A 32.0 ppb (30) N/A N/A 3.0 μg/m3 (13) 30.0
 
July 31, 2021, 8 p.m. 0.0 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A N/A 30.0 ppb (28) N/A N/A 3.0 μg/m3 (13) 28.0
 
July 31, 2021, 7 p.m. 0.0 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A N/A 28.0 ppb (26) N/A N/A 4.0 μg/m3 (17) 26.0
 
July 31, 2021, 6 p.m. 0.0 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A N/A 27.0 ppb (25) N/A N/A 4.0 μg/m3 (17) 25.0
 
July 31, 2021, 5 p.m. 0.0 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A N/A 26.0 ppb (25) N/A N/A 3.0 μg/m3 (13) 25.0
 
July 31, 2021, 4 p.m. 0.0 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A N/A 25.0 ppb (24) N/A N/A 3.0 μg/m3 (13) 24.0
 
July 31, 2021, 3 p.m. 0.0 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A N/A 25.0 ppb (24) N/A N/A 3.0 μg/m3 (13) 24.0
 
July 31, 2021, 2 p.m. 0.0 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A N/A 23.0 ppb (22) N/A N/A 3.0 μg/m3 (13) 22.0
 
July 31, 2021, 1 p.m. 0.0 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A N/A 22.0 ppb (21) N/A N/A 4.0 μg/m3 (17) 21.0
 
July 31, 2021, noon 1.0 ppb (1) 0.0 ppb (0) N/A 0.0 ppb (0) N/A N/A 20.0 ppb (19) N/A N/A 4.0 μg/m3 (17) 19.0
 
July 31, 2021, 11 a.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 18.0 ppb (17) N/A N/A 4.0 μg/m3 (17) 17.0
 
July 31, 2021, 10 a.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 15.0 ppb (14) N/A N/A 4.0 μg/m3 (17) 17.0
 
July 31, 2021, 9 a.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 17.0 ppb (16) N/A N/A 3.0 μg/m3 (13) 16.0
 
July 31, 2021, 8 a.m. 2.0 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A N/A N/A N/A N/A 3.0 μg/m3 (13) 13.0
 
July 31, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 17.0 ppb (16) N/A N/A 3.0 μg/m3 (13) 16.0
 
July 31, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (20) N/A N/A 3.0 μg/m3 (13) 20.0
 
July 31, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (21) N/A N/A 3.0 μg/m3 (13) 21.0
 
July 31, 2021, 4 a.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 23.0 ppb (22) N/A N/A 3.0 μg/m3 (13) 22.0
 
July 31, 2021, 3 a.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 24.0 ppb (23) N/A N/A 3.0 μg/m3 (13) 23.0
 
July 31, 2021, 2 a.m. 0.0 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A N/A 26.0 ppb (25) N/A N/A 3.0 μg/m3 (13) 25.0
 
July 31, 2021, 1 a.m. 1.0 ppb (1) 0.0 ppb (0) N/A 0.0 ppb (0) N/A N/A 28.0 ppb (26) N/A N/A 3.0 μg/m3 (13) 26.0
 
July 31, 2021, midnight 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 30.0 ppb (28) N/A N/A 3.0 μg/m3 (13) 28.0
 
July 30, 2021, 11 p.m. 0.0 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A N/A 31.0 ppb (29) N/A N/A 4.0 μg/m3 (17) 29.0
 
July 30, 2021, 10 p.m. 1.0 ppb (1) 0.0 ppb (0) N/A 0.0 ppb (0) N/A N/A 33.0 ppb (31) N/A N/A 5.0 μg/m3 (21) 31.0
 
July 30, 2021, 9 p.m. 0.0 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A N/A 37.0 ppb (35) N/A N/A 5.0 μg/m3 (21) 35.0
 
July 30, 2021, 8 p.m. 1.0 ppb (1) 0.0 ppb (0) N/A 0.0 ppb (0) N/A N/A 37.0 ppb (35) N/A N/A 6.0 μg/m3 (25) 35.0
 
July 30, 2021, 7 p.m. 1.0 ppb (1) 0.0 ppb (0) N/A 0.0 ppb (0) N/A N/A 36.0 ppb (34) N/A N/A 8.0 μg/m3 (34) 34.0
 
July 30, 2021, 6 p.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 35.0 ppb (33) N/A N/A 8.0 μg/m3 (34) 34.0
 
July 30, 2021, 5 p.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 36.0 ppb (34) N/A N/A 8.0 μg/m3 (34) 34.0
 
July 30, 2021, 4 p.m. 1.0 ppb (1) 0.0 ppb (0) N/A 0.0 ppb (0) N/A N/A 42.0 ppb (39) N/A N/A 7.0 μg/m3 (30) 39.0
 
July 30, 2021, 3 p.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 39.0 ppb (37) N/A N/A 7.0 μg/m3 (30) 37.0
 
July 30, 2021, 2 p.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 36.0 ppb (34) N/A N/A 10.0 μg/m3 (42) 42.0
 
July 30, 2021, 1 p.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 34.0 ppb (32) N/A N/A 10.0 μg/m3 (42) 42.0
 
July 30, 2021, noon 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 36.0 ppb (34) N/A N/A 9.0 μg/m3 (38) 38.0
 
July 30, 2021, 11 a.m. 3.0 ppb (3) 0.0 ppb (0) N/A 2.0 ppb (2) N/A N/A 33.0 ppb (31) N/A N/A 6.0 μg/m3 (25) 31.0
 
July 30, 2021, 10 a.m. 4.0 ppb (4) 0.0 ppb (0) N/A 4.0 ppb (4) N/A N/A 28.0 ppb (26) N/A N/A 5.0 μg/m3 (21) 26.0
 
July 30, 2021, 9 a.m. 3.0 ppb (3) 0.0 ppb (0) N/A 3.0 ppb (3) N/A N/A 29.0 ppb (27) N/A N/A 4.0 μg/m3 (17) 27.0
 
July 30, 2021, 8 a.m. 3.0 ppb (3) 0.0 ppb (0) N/A 3.0 ppb (3) N/A N/A 31.0 ppb (29) N/A N/A 4.0 μg/m3 (17) 29.0
 
July 30, 2021, 7 a.m. 2.0 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A N/A 33.0 ppb (31) N/A N/A 4.0 μg/m3 (17) 31.0
 
July 30, 2021, 6 a.m. 2.0 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A N/A 39.0 ppb (37) N/A N/A 4.0 μg/m3 (17) 37.0
 
July 30, 2021, 5 a.m. 2.0 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A N/A 38.0 ppb (36) N/A N/A 5.0 μg/m3 (21) 36.0
 
July 30, 2021, 4 a.m. 2.0 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A N/A 44.0 ppb (41) N/A N/A 5.0 μg/m3 (21) 41.0
 
July 30, 2021, 3 a.m. 2.0 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A N/A 42.0 ppb (39) N/A N/A 8.0 μg/m3 (34) 39.0
 
July 30, 2021, 2 a.m. 2.0 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A N/A 35.0 ppb (33) N/A N/A 9.0 μg/m3 (38) 38.0
 
July 30, 2021, 1 a.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 36.0 ppb (34) N/A N/A 8.0 μg/m3 (34) 34.0
 
July 30, 2021, midnight 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 34.0 ppb (32) N/A N/A 8.0 μg/m3 (34) 34.0
 
July 29, 2021, 11 p.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 34.0 ppb (32) N/A N/A 8.0 μg/m3 (34) 34.0
 
July 29, 2021, 10 p.m. 2.0 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A N/A 32.0 ppb (30) N/A N/A 8.0 μg/m3 (34) 34.0
 
July 29, 2021, 9 p.m. 3.0 ppb (3) 0.0 ppb (0) N/A 3.0 ppb (3) N/A N/A 32.0 ppb (30) N/A N/A 8.0 μg/m3 (34) 34.0
 
July 29, 2021, 8 p.m. 4.0 ppb (4) 0.0 ppb (0) N/A 4.0 ppb (4) N/A N/A 30.0 ppb (28) N/A N/A 9.0 μg/m3 (38) 38.0
 
July 29, 2021, 7 p.m. 3.0 ppb (3) 0.0 ppb (0) N/A 3.0 ppb (3) N/A N/A 31.0 ppb (29) N/A N/A 9.0 μg/m3 (38) 38.0
 
July 29, 2021, 6 p.m. 4.0 ppb (4) 0.0 ppb (0) N/A 3.0 ppb (3) N/A N/A 32.0 ppb (30) N/A N/A 10.0 μg/m3 (42) 42.0
 
July 29, 2021, 5 p.m. 3.0 ppb (3) 0.0 ppb (0) N/A 3.0 ppb (3) N/A N/A 37.0 ppb (35) N/A N/A 11.0 μg/m3 (46) 46.0
 
July 29, 2021, 4 p.m. 3.0 ppb (3) 0.0 ppb (0) N/A 3.0 ppb (3) N/A N/A 43.0 ppb (40) N/A N/A 13.0 μg/m3 (53) 53.0
 
July 29, 2021, 3 p.m. 3.0 ppb (3) 0.0 ppb (0) N/A 3.0 ppb (3) N/A N/A 44.0 ppb (41) N/A N/A 13.0 μg/m3 (53) 53.0
 
July 29, 2021, 2 p.m. 4.0 ppb (4) 1.0 ppb (1) N/A 4.0 ppb (4) N/A N/A 39.0 ppb (37) N/A N/A 15.0 μg/m3 (58) 58.0
 
July 29, 2021, 1 p.m. 5.0 ppb (5) 1.0 ppb (1) N/A 4.0 ppb (4) N/A N/A 32.0 ppb (30) N/A N/A 12.0 μg/m3 (50) 50.0
 
July 29, 2021, noon 7.0 ppb (7) 1.0 ppb (1) N/A 6.0 ppb (6) N/A N/A 26.0 ppb (25) N/A N/A 11.0 μg/m3 (46) 46.0
 
July 29, 2021, 11 a.m. 6.0 ppb (6) 0.0 ppb (0) N/A 6.0 ppb (6) N/A N/A 24.0 ppb (23) N/A N/A 10.0 μg/m3 (42) 42.0
 
July 29, 2021, 10 a.m. 6.0 ppb (6) 0.0 ppb (0) N/A 6.0 ppb (6) N/A N/A 23.0 ppb (22) N/A N/A 12.0 μg/m3 (50) 50.0
 
July 29, 2021, 9 a.m. 5.0 ppb (5) 0.0 ppb (0) N/A 5.0 ppb (5) N/A N/A 25.0 ppb (24) N/A N/A 10.0 μg/m3 (42) 42.0
 
July 29, 2021, 8 a.m. 6.0 ppb (6) 0.0 ppb (0) N/A 6.0 ppb (6) N/A N/A 13.0 ppb (13) N/A N/A 9.0 μg/m3 (38) 38.0
 
July 29, 2021, 7 a.m. 7.0 ppb (7) 0.0 ppb (0) N/A 7.0 ppb (7) N/A N/A 3.0 ppb (3) N/A N/A 9.0 μg/m3 (38) 38.0
 
July 29, 2021, 6 a.m. 9.0 ppb (9) 0.0 ppb (0) N/A 9.0 ppb (9) N/A N/A 4.0 ppb (4) N/A N/A 9.0 μg/m3 (38) 38.0
 
July 29, 2021, 5 a.m. 8.0 ppb (8) 0.0 ppb (0) N/A 8.0 ppb (8) N/A N/A 9.0 ppb (9) N/A N/A 10.0 μg/m3 (42) 42.0
 
July 29, 2021, 4 a.m. 5.0 ppb (5) 0.0 ppb (0) N/A 5.0 ppb (5) N/A N/A 9.0 ppb (9) N/A N/A 9.0 μg/m3 (38) 38.0
 
July 29, 2021, 3 a.m. 3.0 ppb (3) 0.0 ppb (0) N/A 3.0 ppb (3) N/A N/A 7.0 ppb (7) N/A N/A 8.0 μg/m3 (34) 34.0
 
July 29, 2021, 2 a.m. 2.0 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A N/A 11.0 ppb (11) N/A N/A 8.0 μg/m3 (34) 34.0
 
July 29, 2021, 1 a.m. 3.0 ppb (3) 0.0 ppb (0) N/A 3.0 ppb (3) N/A N/A 14.0 ppb (13) N/A N/A 7.0 μg/m3 (30) 30.0
 
July 29, 2021, midnight 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 20.0 ppb (19) N/A N/A 6.0 μg/m3 (25) 25.0
 
July 28, 2021, 11 p.m. 0.0 ppb (0) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 27.0 ppb (25) N/A N/A 5.0 μg/m3 (21) 25.0
 
July 28, 2021, 10 p.m. 0.0 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A N/A 30.0 ppb (28) N/A N/A 6.0 μg/m3 (25) 28.0
 
July 28, 2021, 9 p.m. 0.0 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A N/A 32.0 ppb (30) N/A N/A 7.0 μg/m3 (30) 30.0
 
July 28, 2021, 8 p.m. 0.0 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A N/A 33.0 ppb (31) N/A N/A 8.0 μg/m3 (34) 34.0
 
July 28, 2021, 7 p.m. 0.0 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A N/A 31.0 ppb (29) N/A N/A 9.0 μg/m3 (38) 38.0
 
July 28, 2021, 6 p.m. 0.0 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A N/A 31.0 ppb (29) N/A N/A 10.0 μg/m3 (42) 42.0
 
July 28, 2021, 5 p.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 29.0 ppb (27) N/A N/A 10.0 μg/m3 (42) 42.0
 
July 28, 2021, 4 p.m. 0.0 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A N/A 31.0 ppb (29) N/A N/A 10.0 μg/m3 (42) 42.0
 
July 28, 2021, 3 p.m. 1.0 ppb (1) 0.0 ppb (0) N/A 0.0 ppb (0) N/A N/A 28.0 ppb (26) N/A N/A 10.0 μg/m3 (42) 42.0
 
July 28, 2021, 2 p.m. 1.0 ppb (1) 0.0 ppb (0) N/A 0.0 ppb (0) N/A N/A 27.0 ppb (25) N/A N/A 10.0 μg/m3 (42) 42.0
 
July 28, 2021, 1 p.m. 1.0 ppb (1) 0.0 ppb (0) N/A 0.0 ppb (0) N/A N/A 23.0 ppb (22) N/A N/A 10.0 μg/m3 (42) 42.0
 
July 28, 2021, noon 2.0 ppb (2) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 20.0 ppb (19) N/A N/A 10.0 μg/m3 (42) 42.0
 
July 28, 2021, 11 a.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 17.0 ppb (16) N/A N/A 9.0 μg/m3 (38) 38.0
 
July 28, 2021, 10 a.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 16.0 ppb (15) N/A N/A 10.0 μg/m3 (42) 42.0
 
July 28, 2021, 9 a.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 14.0 ppb (13) N/A N/A 13.0 μg/m3 (53) 53.0
 
July 28, 2021, 8 a.m. 2.0 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A N/A N/A N/A N/A 14.0 μg/m3 (55) 55.0
 
July 28, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (21) N/A N/A 11.0 μg/m3 (46) 46.0
 
July 28, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (24) N/A N/A 9.0 μg/m3 (38) 38.0
 
July 28, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (19) N/A N/A 10.0 μg/m3 (42) 42.0
 
July 28, 2021, 1 a.m. 5.0 ppb (5) 0.0 ppb (0) N/A 5.0 ppb (5) N/A N/A 36.0 ppb (34) N/A N/A 9.0 μg/m3 (38) 38.0
 
July 28, 2021, midnight 4.0 ppb (4) 0.0 ppb (0) N/A 4.0 ppb (4) N/A N/A 40.0 ppb (38) N/A N/A 8.0 μg/m3 (34) 38.0
 
July 27, 2021, 11 p.m. 2.0 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A N/A 46.0 ppb (43) N/A N/A 8.0 μg/m3 (34) 43.0
 
July 27, 2021, 10 p.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 49.0 ppb (46) N/A N/A 8.0 μg/m3 (34) 46.0
 
July 27, 2021, 9 p.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 53.0 ppb (50) N/A N/A N/A 50.0
 
July 27, 2021, 8 p.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 52.0 ppb (49) N/A N/A 16.0 μg/m3 (60) 60.0
 
July 27, 2021, 7 p.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 51.0 ppb (48) N/A N/A 16.0 μg/m3 (60) 60.0
 
July 27, 2021, 6 p.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 50.0 ppb (47) N/A N/A 16.0 μg/m3 (60) 60.0
 
July 27, 2021, 5 p.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 49.0 ppb (46) N/A N/A 19.0 μg/m3 (66) 66.0
 
July 27, 2021, 4 p.m. 2.0 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A N/A 50.0 ppb (47) N/A N/A 19.0 μg/m3 (66) 66.0
 
July 27, 2021, 3 p.m. 3.0 ppb (3) 0.0 ppb (0) N/A 3.0 ppb (3) N/A N/A 49.0 ppb (46) N/A N/A 20.0 μg/m3 (68) 68.0
 
July 27, 2021, 2 p.m. 8.0 ppb (8) 2.0 ppb (2) N/A 7.0 ppb (7) N/A N/A 39.0 ppb (37) N/A N/A 24.0 μg/m3 (77) 77.0
 
July 27, 2021, 1 p.m. 12.0 ppb (12) 3.0 ppb (3) N/A 8.0 ppb (8) N/A N/A 25.0 ppb (24) N/A N/A 26.0 μg/m3 (81) 81.0
 
July 27, 2021, noon 21.0 ppb (20) 9.0 ppb (9) N/A 12.0 ppb (12) N/A N/A 12.0 ppb (12) N/A N/A 32.0 μg/m3 (93) 93.0
 
July 27, 2021, 11 a.m. 22.0 ppb (21) 10.0 ppb (10) N/A 12.0 ppb (12) N/A N/A 5.0 ppb (5) N/A N/A 42.0 μg/m3 (118) 118.0
 
July 27, 2021, 10 a.m. 6.0 ppb (6) 2.0 ppb (2) N/A 4.0 ppb (4) N/A N/A 3.0 ppb (3) N/A N/A 38.0 μg/m3 (108) 108.0
 
July 27, 2021, 9 a.m. 5.0 ppb (5) 1.0 ppb (1) N/A 5.0 ppb (5) N/A N/A 1.0 ppb (1) N/A N/A 39.0 μg/m3 (110) 110.0
 
July 27, 2021, 8 a.m. 8.0 ppb (8) 0.0 ppb (0) N/A 8.0 ppb (8) N/A N/A 1.0 ppb (1) N/A N/A 42.0 μg/m3 (118) 118.0
 
July 27, 2021, 7 a.m. 9.0 ppb (9) 0.0 ppb (0) N/A 9.0 ppb (9) N/A N/A 1.0 ppb (1) N/A N/A 42.0 μg/m3 (118) 118.0
 
July 27, 2021, 6 a.m. 16.0 ppb (16) 1.0 ppb (1) N/A 15.0 ppb (15) N/A N/A 2.0 ppb (2) N/A N/A 42.0 μg/m3 (118) 118.0
 
July 27, 2021, 5 a.m. 14.0 ppb (14) 0.0 ppb (0) N/A 14.0 ppb (14) N/A N/A 3.0 ppb (3) N/A N/A 41.0 μg/m3 (115) 115.0
 
July 27, 2021, 4 a.m. 12.0 ppb (12) 0.0 ppb (0) N/A 12.0 ppb (12) N/A N/A 10.0 ppb (10) N/A N/A 40.0 μg/m3 (113) 113.0
 
July 27, 2021, 3 a.m. 5.0 ppb (5) 0.0 ppb (0) N/A 5.0 ppb (5) N/A N/A 16.0 ppb (15) N/A N/A 39.0 μg/m3 (110) 110.0
 
July 27, 2021, 2 a.m. 6.0 ppb (6) 0.0 ppb (0) N/A 6.0 ppb (6) N/A N/A 29.0 ppb (27) N/A N/A 37.0 μg/m3 (105) 105.0
 
July 27, 2021, 1 a.m. 4.0 ppb (4) 0.0 ppb (0) N/A 5.0 ppb (5) N/A N/A 33.0 ppb (31) N/A N/A 41.0 μg/m3 (115) 115.0
 
July 27, 2021, midnight 4.0 ppb (4) 0.0 ppb (0) N/A 4.0 ppb (4) N/A N/A 36.0 ppb (34) N/A N/A 42.0 μg/m3 (118) 118.0
 
July 26, 2021, 11 p.m. 2.0 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A N/A 42.0 ppb (39) N/A N/A 42.0 μg/m3 (118) 118.0
 
July 26, 2021, 10 p.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 46.0 ppb (43) N/A N/A 44.0 μg/m3 (122) 122.0
 
July 26, 2021, 9 p.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 49.0 ppb (46) N/A N/A 53.0 μg/m3 (145) 145.0
 
July 26, 2021, 8 p.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 50.0 ppb (47) N/A N/A 71.0 μg/m3 (160) 160.0
 
July 26, 2021, 7 p.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 51.0 ppb (48) N/A N/A 81.0 μg/m3 (165) 165.0
 
July 26, 2021, 6 p.m. 2.0 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A N/A 50.0 ppb (47) N/A N/A 97.0 μg/m3 (173) 173.0
 
July 26, 2021, 5 p.m. 2.0 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A N/A 51.0 ppb (48) N/A N/A 115.0 μg/m3 (182) 182.0
 
July 26, 2021, 4 p.m. 2.0 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A N/A 50.0 ppb (47) N/A N/A 99.0 μg/m3 (174) 174.0
 
July 26, 2021, 3 p.m. 2.0 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A N/A 45.0 ppb (42) N/A N/A 46.0 μg/m3 (127) 127.0
 
July 26, 2021, 2 p.m. 6.0 ppb (6) 1.0 ppb (1) N/A 5.0 ppb (5) N/A N/A 38.0 ppb (36) N/A N/A 23.0 μg/m3 (74) 74.0
 
July 26, 2021, 1 p.m. 8.0 ppb (8) 2.0 ppb (2) N/A 6.0 ppb (6) N/A N/A 29.0 ppb (27) N/A N/A 23.0 μg/m3 (74) 74.0
 
July 26, 2021, noon 8.0 ppb (8) 2.0 ppb (2) N/A 6.0 ppb (6) N/A N/A 25.0 ppb (24) N/A N/A 20.0 μg/m3 (68) 68.0
 
July 26, 2021, 11 a.m. 7.0 ppb (7) 1.0 ppb (1) N/A 6.0 ppb (6) N/A N/A 19.0 ppb (18) N/A N/A 17.0 μg/m3 (62) 62.0
 
July 26, 2021, 10 a.m. 5.0 ppb (5) 0.0 ppb (0) N/A 5.0 ppb (5) N/A N/A 17.0 ppb (16) N/A N/A 11.0 μg/m3 (46) 46.0
 
July 26, 2021, 9 a.m. 5.0 ppb (5) 0.0 ppb (0) N/A 5.0 ppb (5) N/A N/A 17.0 ppb (16) N/A N/A 10.0 μg/m3 (42) 42.0
 
July 26, 2021, 8 a.m. 7.0 ppb (7) 0.0 ppb (0) N/A 7.0 ppb (7) N/A N/A 16.0 ppb (15) N/A N/A 9.0 μg/m3 (38) 38.0
 
July 26, 2021, 7 a.m. 8.0 ppb (8) 0.0 ppb (0) N/A 8.0 ppb (8) N/A N/A 14.0 ppb (13) N/A N/A 11.0 μg/m3 (46) 46.0
 
July 26, 2021, 6 a.m. 6.0 ppb (6) 0.0 ppb (0) N/A 6.0 ppb (6) N/A N/A 11.0 ppb (11) N/A N/A 12.0 μg/m3 (50) 50.0
 
July 26, 2021, 5 a.m. 5.0 ppb (5) 0.0 ppb (0) N/A 5.0 ppb (5) N/A N/A 17.0 ppb (16) N/A N/A 12.0 μg/m3 (50) 50.0
 
July 26, 2021, 4 a.m. 5.0 ppb (5) 0.0 ppb (0) N/A 4.0 ppb (4) N/A N/A 23.0 ppb (22) N/A N/A 13.0 μg/m3 (53) 53.0
 
July 26, 2021, 3 a.m. 4.0 ppb (4) 0.0 ppb (0) N/A 4.0 ppb (4) N/A N/A 29.0 ppb (27) N/A N/A 14.0 μg/m3 (55) 55.0
 
July 26, 2021, 2 a.m. 3.0 ppb (3) 0.0 ppb (0) N/A 4.0 ppb (4) N/A N/A 34.0 ppb (32) N/A N/A 13.0 μg/m3 (53) 53.0
 
July 26, 2021, 1 a.m. 5.0 ppb (5) 0.0 ppb (0) N/A 5.0 ppb (5) N/A N/A 30.0 ppb (28) N/A N/A 15.0 μg/m3 (58) 58.0
 
July 26, 2021, midnight 4.0 ppb (4) 0.0 ppb (0) N/A 4.0 ppb (4) N/A N/A 35.0 ppb (33) N/A N/A 15.0 μg/m3 (58) 58.0
 
July 25, 2021, 11 p.m. 3.0 ppb (3) 0.0 ppb (0) N/A 3.0 ppb (3) N/A N/A 37.0 ppb (35) N/A N/A 15.0 μg/m3 (58) 58.0
 
July 25, 2021, 10 p.m. 2.0 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A N/A 41.0 ppb (38) N/A N/A 14.0 μg/m3 (55) 55.0
 
July 25, 2021, 9 p.m. 2.0 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A N/A 39.0 ppb (37) N/A N/A 13.0 μg/m3 (53) 53.0
 
July 25, 2021, 8 p.m. 2.0 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A N/A 39.0 ppb (37) N/A N/A 13.0 μg/m3 (53) 53.0
 
July 25, 2021, 7 p.m. 2.0 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A N/A 39.0 ppb (37) N/A N/A 13.0 μg/m3 (53) 53.0
 
July 25, 2021, 6 p.m. 3.0 ppb (3) 0.0 ppb (0) N/A 2.0 ppb (2) N/A N/A 39.0 ppb (37) N/A N/A 12.0 μg/m3 (50) 50.0
 
July 25, 2021, 5 p.m. 3.0 ppb (3) 0.0 ppb (0) N/A 2.0 ppb (2) N/A N/A 38.0 ppb (36) N/A N/A 12.0 μg/m3 (50) 50.0
 
July 25, 2021, 4 p.m. 3.0 ppb (3) 0.0 ppb (0) N/A 2.0 ppb (2) N/A N/A 37.0 ppb (35) N/A N/A 11.0 μg/m3 (46) 46.0
 
July 25, 2021, 3 p.m. 3.0 ppb (3) 0.0 ppb (0) N/A 2.0 ppb (2) N/A N/A 38.0 ppb (36) N/A N/A 11.0 μg/m3 (46) 46.0
 
July 25, 2021, 2 p.m. 3.0 ppb (3) 0.0 ppb (0) N/A 3.0 ppb (3) N/A N/A 38.0 ppb (36) N/A N/A 11.0 μg/m3 (46) 46.0
 
July 25, 2021, 1 p.m. 3.0 ppb (3) 0.0 ppb (0) N/A 3.0 ppb (3) N/A N/A 40.0 ppb (38) N/A N/A 12.0 μg/m3 (50) 50.0
 
July 25, 2021, noon 3.0 ppb (3) 0.0 ppb (0) N/A 3.0 ppb (3) N/A N/A 37.0 ppb (35) N/A N/A 12.0 μg/m3 (50) 50.0
 
July 25, 2021, 11 a.m. 3.0 ppb (3) 0.0 ppb (0) N/A 3.0 ppb (3) N/A N/A 35.0 ppb (33) N/A N/A 11.0 μg/m3 (46) 46.0
 
July 25, 2021, 10 a.m. 3.0 ppb (3) 0.0 ppb (0) N/A 3.0 ppb (3) N/A N/A 36.0 ppb (34) N/A N/A 11.0 μg/m3 (46) 46.0
 
July 25, 2021, 9 a.m. 3.0 ppb (3) 0.0 ppb (0) N/A 3.0 ppb (3) N/A N/A 31.0 ppb (29) N/A N/A 10.0 μg/m3 (42) 42.0
 
July 25, 2021, 8 a.m. 3.0 ppb (3) 0.0 ppb (0) N/A 3.0 ppb (3) N/A N/A N/A N/A N/A 9.0 μg/m3 (38) 38.0
 
July 25, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (33) N/A N/A 10.0 μg/m3 (42) 42.0
 
July 25, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (32) N/A N/A 10.0 μg/m3 (42) 42.0
 
July 25, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (30) N/A N/A 10.0 μg/m3 (42) 42.0
 
July 25, 2021, 4 a.m. 3.0 ppb (3) 0.0 ppb (0) N/A 3.0 ppb (3) N/A N/A 32.0 ppb (30) N/A N/A 11.0 μg/m3 (46) 46.0
 
July 25, 2021, 3 a.m. 3.0 ppb (3) 0.0 ppb (0) N/A 3.0 ppb (3) N/A N/A 34.0 ppb (32) N/A N/A 11.0 μg/m3 (46) 46.0
 
July 25, 2021, 2 a.m. 3.0 ppb (3) 0.0 ppb (0) N/A 3.0 ppb (3) N/A N/A 37.0 ppb (35) N/A N/A 11.0 μg/m3 (46) 46.0
 
July 25, 2021, 1 a.m. 2.0 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A N/A 38.0 ppb (36) N/A N/A 10.0 μg/m3 (42) 42.0
 
July 25, 2021, midnight 2.0 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A N/A 36.0 ppb (34) N/A N/A 10.0 μg/m3 (42) 42.0
 
July 24, 2021, 11 p.m. 3.0 ppb (3) 0.0 ppb (0) N/A 3.0 ppb (3) N/A N/A 40.0 ppb (38) N/A N/A 8.0 μg/m3 (34) 38.0