ID: 2009

AQSQID: 340410007

Site Name: Columbia

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

Updated: Sept. 28, 2021, 9:01 p.m.

Location: Knowlton (Delaware Rd), NJ

Reporting: True, Located: True

Current AQI: 52.0

Knowlton (Delaware Rd) NJ, US: 40.924606, -75.067825

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
Sept. 21, 2021, 7 p.m. 9.0 ppb (9) 3.0 ppb (3) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 31.0 ppb (29) N/A N/A 3.3 μg/m3 (14) 29.0
 
Sept. 21, 2021, 6 p.m. 12.0 ppb (12) 4.0 ppb (4) N/A 8.0 ppb (8) N/A 0.0 ppb (0) 27.0 ppb (25) N/A N/A 6.2 μg/m3 (26) 26.0
 
Sept. 21, 2021, 5 p.m. 6.0 ppb (6) 2.0 ppb (2) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 28.0 ppb (26) N/A N/A 9.4 μg/m3 (40) 40.0
 
Sept. 21, 2021, 4 p.m. 13.0 ppb (13) 6.0 ppb (6) N/A 7.0 ppb (7) N/A 0.0 ppb (0) 23.0 ppb (22) N/A N/A 6.0 μg/m3 (25) 25.0
 
Sept. 21, 2021, 3 p.m. 15.0 ppb (15) 8.0 ppb (8) N/A 7.0 ppb (7) N/A 0.0 ppb (0) 14.0 ppb (13) N/A N/A 2.4 μg/m3 (10) 15.0
 
Sept. 21, 2021, 2 p.m. 28.0 ppb (27) 20.0 ppb (19) N/A 8.0 ppb (8) N/A 0.0 ppb (0) 5.0 ppb (5) N/A N/A -0.7 μg/m3 (0) 27.0
 
Sept. 21, 2021, 1 p.m. 13.0 ppb (13) 7.0 ppb (7) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 6.0 ppb (6) N/A N/A N/A 13.0
 
Sept. 21, 2021, noon 31.0 ppb (30) 25.0 ppb (24) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 1.0 ppb (1) N/A N/A -2.2 μg/m3 (0) 30.0
 
Sept. 21, 2021, 11 a.m. 29.0 ppb (28) 24.0 ppb (23) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 0.0 ppb (0) N/A N/A 1.0 μg/m3 (5) 28.0
 
Sept. 21, 2021, 10 a.m. 31.0 ppb (30) 26.0 ppb (25) N/A 5.0 ppb (5) N/A 0.0 ppb (0) N/A N/A N/A -0.6 μg/m3 (0) 30.0
 
Sept. 21, 2021, 9 a.m. 32.0 ppb (31) 26.0 ppb (25) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 0.0 ppb (0) N/A N/A -1.2 μg/m3 (0) 31.0
 
Sept. 21, 2021, 8 a.m. 54.0 ppb (51) 47.0 ppb (45) N/A 7.0 ppb (7) N/A N/A 0.0 ppb (0) N/A N/A -0.4 μg/m3 (0) 51.0
 
Sept. 21, 2021, 7 a.m. 51.0 ppb (49) 45.0 ppb (43) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 0.0 ppb (0) N/A N/A N/A 49.0
 
Sept. 21, 2021, 6 a.m. 63.0 ppb (61) 55.0 ppb (53) N/A 7.0 ppb (7) N/A 0.0 ppb (0) 0.0 ppb (0) N/A N/A N/A 61.0
 
Sept. 21, 2021, 5 a.m. 61.0 ppb (59) 52.0 ppb (50) N/A 9.0 ppb (9) N/A N/A 0.0 ppb (0) N/A N/A N/A 59.0
 
Sept. 21, 2021, 4 a.m. 67.0 ppb (65) 55.0 ppb (53) N/A 12.0 ppb (12) N/A 0.0 ppb (0) 0.0 ppb (0) N/A N/A -3.0 μg/m3 (0) 65.0
 
Sept. 21, 2021, 3 a.m. 56.0 ppb (54) 43.0 ppb (41) N/A 13.0 ppb (13) N/A 0.0 ppb (0) 0.0 ppb (0) N/A N/A 12.5 μg/m3 (52) 54.0
 
Sept. 21, 2021, 2 a.m. 119.0 ppb (105) 100.0 ppb (100) N/A 19.0 ppb (18) N/A 1.0 ppb (2) 0.0 ppb (0) N/A N/A 19.5 μg/m3 (67) 105.0
 
Sept. 21, 2021, 1 a.m. 117.0 ppb (105) 96.0 ppb (96) N/A 20.0 ppb (19) N/A 1.0 ppb (2) 0.0 ppb (0) N/A N/A 37.1 μg/m3 (105) 105.0
 
Sept. 21, 2021, midnight 14.0 ppb (14) 9.0 ppb (9) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 9.0 ppb (9) N/A N/A 61.9 μg/m3 (155) 155.0
 
Sept. 20, 2021, 11 p.m. 5.0 ppb (5) 0.0 ppb (0) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 17.0 ppb (16) N/A N/A 34.9 μg/m3 (99) 99.0
 
Sept. 20, 2021, 10 p.m. 7.0 ppb (7) 1.0 ppb (1) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 25.0 ppb (24) N/A N/A 5.2 μg/m3 (22) 24.0
 
Sept. 20, 2021, 9 p.m. 9.0 ppb (9) 1.0 ppb (1) N/A 7.0 ppb (7) N/A 0.0 ppb (0) 40.0 ppb (38) N/A N/A N/A 38.0
 
Sept. 20, 2021, 8 p.m. 3.0 ppb (3) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 41.0 ppb (38) N/A N/A 5.9 μg/m3 (25) 38.0
 
Sept. 20, 2021, 7 p.m. 6.0 ppb (6) 2.0 ppb (2) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 41.0 ppb (38) N/A N/A 6.7 μg/m3 (28) 38.0
 
Sept. 20, 2021, 6 p.m. 5.0 ppb (5) 2.0 ppb (2) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 37.0 ppb (35) N/A N/A 9.3 μg/m3 (39) 39.0
 
Sept. 20, 2021, 5 p.m. 5.0 ppb (5) 2.0 ppb (2) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 35.0 ppb (33) N/A N/A 12.0 μg/m3 (50) 50.0
 
Sept. 20, 2021, 4 p.m. 9.0 ppb (9) 4.0 ppb (4) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 31.0 ppb (29) N/A N/A 15.6 μg/m3 (59) 59.0
 
Sept. 20, 2021, 3 p.m. 9.0 ppb (9) 4.0 ppb (4) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 26.0 ppb (25) N/A N/A 14.1 μg/m3 (56) 56.0
 
Sept. 20, 2021, 2 p.m. 8.0 ppb (8) 4.0 ppb (4) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 16.0 ppb (15) N/A N/A 4.4 μg/m3 (19) 19.0
 
Sept. 20, 2021, 1 p.m. 20.0 ppb (19) 15.0 ppb (15) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 5.0 ppb (5) N/A N/A N/A 19.0
 
Sept. 20, 2021, noon 33.0 ppb (32) 28.0 ppb (27) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 1.0 ppb (1) N/A N/A -2.8 μg/m3 (0) 32.0
 
Sept. 20, 2021, 11 a.m. 42.0 ppb (40) 38.0 ppb (36) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 0.0 ppb (0) N/A N/A 1.4 μg/m3 (6) 40.0
 
Sept. 20, 2021, 10 a.m. 57.0 ppb (55) 53.0 ppb (50) N/A 3.0 ppb (3) N/A 0.0 ppb (0) N/A N/A N/A 2.4 μg/m3 (10) 55.0
 
Sept. 20, 2021, 9 a.m. 50.0 ppb (48) 45.0 ppb (43) N/A 4.0 ppb (4) N/A 0.0 ppb (0) N/A N/A N/A 0.6 μg/m3 (3) 48.0
 
Sept. 20, 2021, 8 a.m. 64.0 ppb (62) 59.0 ppb (57) N/A 5.0 ppb (5) N/A N/A 0.0 ppb (0) N/A N/A -1.3 μg/m3 (0) 62.0
 
Sept. 20, 2021, 7 a.m. 35.0 ppb (34) 31.0 ppb (30) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 0.0 ppb (0) N/A N/A -1.4 μg/m3 (0) 34.0
 
Sept. 20, 2021, 6 a.m. 39.0 ppb (37) 34.0 ppb (33) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 0.0 ppb (0) N/A N/A -2.1 μg/m3 (0) 37.0
 
Sept. 20, 2021, 5 a.m. 42.0 ppb (40) 37.0 ppb (35) N/A 5.0 ppb (5) N/A N/A 0.0 ppb (0) N/A N/A N/A 40.0
 
Sept. 20, 2021, 4 a.m. 44.0 ppb (42) 37.0 ppb (35) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 0.0 ppb (0) N/A N/A -2.2 μg/m3 (0) 42.0
 
Sept. 20, 2021, 3 a.m. 58.0 ppb (56) 52.0 ppb (50) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 0.0 ppb (0) N/A N/A 0.6 μg/m3 (3) 56.0
 
Sept. 20, 2021, 2 a.m. 38.0 ppb (36) 31.0 ppb (30) N/A 7.0 ppb (7) N/A 0.0 ppb (0) 0.0 ppb (0) N/A N/A 3.7 μg/m3 (16) 36.0
 
Sept. 20, 2021, 1 a.m. 46.0 ppb (44) 36.0 ppb (34) N/A 9.0 ppb (9) N/A 0.0 ppb (0) 0.0 ppb (0) N/A N/A 6.2 μg/m3 (26) 44.0
 
Sept. 20, 2021, midnight 24.0 ppb (23) 14.0 ppb (14) N/A 10.0 ppb (10) N/A 0.0 ppb (0) 0.0 ppb (0) N/A N/A 3.3 μg/m3 (14) 23.0
 
Sept. 19, 2021, 11 p.m. 12.0 ppb (12) 4.0 ppb (4) N/A 8.0 ppb (8) N/A 0.0 ppb (0) 2.0 ppb (2) N/A N/A 0.4 μg/m3 (2) 12.0
 
Sept. 19, 2021, 10 p.m. 7.0 ppb (7) 2.0 ppb (2) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 7.0 ppb (7) N/A N/A 2.0 μg/m3 (9) 9.0
 
Sept. 19, 2021, 9 p.m. 11.0 ppb (11) 5.0 ppb (5) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 17.0 ppb (16) N/A N/A N/A 16.0
 
Sept. 19, 2021, 8 p.m. 11.0 ppb (11) 6.0 ppb (6) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 19.0 ppb (18) N/A N/A 1.5 μg/m3 (7) 18.0
 
Sept. 19, 2021, 7 p.m. 4.0 ppb (4) 2.0 ppb (2) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 22.0 ppb (21) N/A N/A 1.9 μg/m3 (8) 21.0
 
Sept. 19, 2021, 6 p.m. 5.0 ppb (5) 2.0 ppb (2) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 21.0 ppb (20) N/A N/A 2.0 μg/m3 (9) 20.0
 
Sept. 19, 2021, 5 p.m. 7.0 ppb (7) 3.0 ppb (3) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 20.0 ppb (19) N/A N/A 3.0 μg/m3 (13) 19.0
 
Sept. 19, 2021, 4 p.m. 4.0 ppb (4) 2.0 ppb (2) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 21.0 ppb (20) N/A N/A 6.8 μg/m3 (29) 29.0
 
Sept. 19, 2021, 3 p.m. 8.0 ppb (8) 4.0 ppb (4) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 20.0 ppb (19) N/A N/A 10.9 μg/m3 (46) 46.0
 
Sept. 19, 2021, 2 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 19.0 ppb (18) N/A N/A 8.2 μg/m3 (35) 35.0
 
Sept. 19, 2021, 1 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 17.0 ppb (16) N/A N/A N/A 16.0
 
Sept. 19, 2021, noon N/A N/A N/A N/A N/A 0.0 ppb (0) 12.0 ppb (12) N/A N/A -1.1 μg/m3 (0) 12.0
 
Sept. 19, 2021, 11 a.m. 23.0 ppb (22) 13.0 ppb (13) N/A 9.0 ppb (9) N/A 0.0 ppb (0) 4.0 ppb (4) N/A N/A 0.7 μg/m3 (3) 22.0
 
Sept. 19, 2021, 10 a.m. 14.0 ppb (14) 4.0 ppb (4) N/A 9.0 ppb (9) N/A 0.0 ppb (0) N/A N/A N/A 2.5 μg/m3 (11) 14.0
 
Sept. 19, 2021, 9 a.m. 9.0 ppb (9) 1.0 ppb (1) N/A 7.0 ppb (7) N/A 0.0 ppb (0) 11.0 ppb (11) N/A N/A 4.6 μg/m3 (20) 20.0
 
Sept. 19, 2021, 8 a.m. 6.0 ppb (6) 1.0 ppb (1) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 21.0 ppb (20) N/A N/A 6.0 μg/m3 (25) 25.0
 
Sept. 19, 2021, 7 a.m. 8.0 ppb (8) 2.0 ppb (2) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 19.0 ppb (18) N/A N/A 8.8 μg/m3 (37) 37.0
 
Sept. 19, 2021, 6 a.m. 10.0 ppb (10) 3.0 ppb (3) N/A 7.0 ppb (7) N/A 0.0 ppb (0) 15.0 ppb (14) N/A N/A 12.2 μg/m3 (52) 52.0
 
Sept. 19, 2021, 5 a.m. 8.0 ppb (8) 1.0 ppb (1) N/A 7.0 ppb (7) N/A N/A 16.0 ppb (15) N/A N/A N/A 15.0
 
Sept. 19, 2021, 4 a.m. 8.0 ppb (8) 1.0 ppb (1) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 24.0 ppb (23) N/A N/A 9.1 μg/m3 (38) 38.0
 
Sept. 19, 2021, 3 a.m. 12.0 ppb (12) 2.0 ppb (2) N/A 10.0 ppb (10) N/A 0.0 ppb (0) 11.0 ppb (11) N/A N/A 10.3 μg/m3 (43) 43.0
 
Sept. 19, 2021, 2 a.m. 15.0 ppb (15) 2.0 ppb (2) N/A 12.0 ppb (12) N/A 0.0 ppb (0) 4.0 ppb (4) N/A N/A 10.8 μg/m3 (46) 46.0
 
Sept. 19, 2021, 1 a.m. 12.0 ppb (12) 1.0 ppb (1) N/A 10.0 ppb (10) N/A 0.0 ppb (0) 3.0 ppb (3) N/A N/A 11.4 μg/m3 (48) 48.0
 
Sept. 19, 2021, midnight 15.0 ppb (15) 4.0 ppb (4) N/A 11.0 ppb (11) N/A 0.0 ppb (0) 5.0 ppb (5) N/A N/A 13.6 μg/m3 (55) 55.0
 
Sept. 18, 2021, 11 p.m. 8.0 ppb (8) 1.0 ppb (1) N/A 7.0 ppb (7) N/A 0.0 ppb (0) 10.0 ppb (10) N/A N/A 13.5 μg/m3 (54) 54.0
 
Sept. 18, 2021, 10 p.m. 3.0 ppb (3) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 22.0 ppb (21) N/A N/A 9.7 μg/m3 (41) 41.0
 
Sept. 18, 2021, 9 p.m. 3.0 ppb (3) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 38.0 ppb (36) N/A N/A N/A 36.0
 
Sept. 18, 2021, 8 p.m. 4.0 ppb (4) 1.0 ppb (1) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 45.0 ppb (42) N/A N/A 8.6 μg/m3 (36) 42.0
 
Sept. 18, 2021, 7 p.m. 5.0 ppb (5) 1.0 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 45.0 ppb (42) N/A N/A 6.1 μg/m3 (26) 42.0
 
Sept. 18, 2021, 6 p.m. 4.0 ppb (4) 1.0 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 37.0 ppb (35) N/A N/A 6.7 μg/m3 (28) 35.0
 
Sept. 18, 2021, 5 p.m. 4.0 ppb (4) 1.0 ppb (1) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 37.0 ppb (35) N/A N/A 6.8 μg/m3 (29) 35.0
 
Sept. 18, 2021, 4 p.m. 8.0 ppb (8) 3.0 ppb (3) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 30.0 ppb (28) N/A N/A 5.5 μg/m3 (23) 28.0
 
Sept. 18, 2021, 3 p.m. 4.0 ppb (4) 2.0 ppb (2) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 27.0 ppb (25) N/A N/A 3.7 μg/m3 (16) 25.0
 
Sept. 18, 2021, 2 p.m. 5.0 ppb (5) 2.0 ppb (2) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 23.0 ppb (22) N/A N/A 2.7 μg/m3 (12) 22.0
 
Sept. 18, 2021, 1 p.m. 6.0 ppb (6) 2.0 ppb (2) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 15.0 ppb (14) N/A N/A N/A 14.0
 
Sept. 18, 2021, noon 18.0 ppb (17) 10.0 ppb (10) N/A 7.0 ppb (7) N/A 0.0 ppb (0) 6.0 ppb (6) N/A N/A 2.2 μg/m3 (10) 17.0
 
Sept. 18, 2021, 11 a.m. 29.0 ppb (28) 23.0 ppb (22) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 0.0 ppb (0) N/A N/A 3.5 μg/m3 (15) 28.0
 
Sept. 18, 2021, 10 a.m. 7.0 ppb (7) 4.0 ppb (4) N/A 2.0 ppb (2) N/A 0.0 ppb (0) N/A N/A N/A 5.1 μg/m3 (22) 22.0
 
Sept. 18, 2021, 9 a.m. 16.0 ppb (16) 10.0 ppb (10) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 0.0 ppb (0) N/A N/A 5.2 μg/m3 (22) 22.0
 
Sept. 18, 2021, 8 a.m. 17.0 ppb (17) 11.0 ppb (11) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 0.0 ppb (0) N/A N/A 6.3 μg/m3 (27) 27.0
 
Sept. 18, 2021, 7 a.m. 17.0 ppb (17) 10.0 ppb (10) N/A 7.0 ppb (7) N/A 0.0 ppb (0) 1.0 ppb (1) N/A N/A 8.9 μg/m3 (38) 38.0
 
Sept. 18, 2021, 6 a.m. 27.0 ppb (26) 20.0 ppb (19) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 0.0 ppb (0) N/A N/A 10.9 μg/m3 (46) 46.0
 
Sept. 18, 2021, 5 a.m. 25.0 ppb (24) 18.0 ppb (17) N/A 6.0 ppb (6) N/A N/A 0.0 ppb (0) N/A N/A N/A 24.0
 
Sept. 18, 2021, 4 a.m. 16.0 ppb (16) 8.0 ppb (8) N/A 7.0 ppb (7) N/A 0.0 ppb (0) 2.0 ppb (2) N/A N/A 5.3 μg/m3 (23) 23.0
 
Sept. 18, 2021, 3 a.m. 22.0 ppb (21) 12.0 ppb (12) N/A 10.0 ppb (10) N/A 0.0 ppb (0) 1.0 ppb (1) N/A N/A 5.0 μg/m3 (21) 21.0
 
Sept. 18, 2021, 2 a.m. 15.0 ppb (15) 5.0 ppb (5) N/A 10.0 ppb (10) N/A 0.0 ppb (0) 3.0 ppb (3) N/A N/A 5.5 μg/m3 (23) 23.0
 
Sept. 18, 2021, 1 a.m. 25.0 ppb (24) 12.0 ppb (12) N/A 13.0 ppb (13) N/A 0.0 ppb (0) 5.0 ppb (5) N/A N/A 3.7 μg/m3 (16) 24.0
 
Sept. 18, 2021, midnight 16.0 ppb (16) 6.0 ppb (6) N/A 10.0 ppb (10) N/A 0.0 ppb (0) 10.0 ppb (10) N/A N/A 1.5 μg/m3 (7) 16.0
 
Sept. 17, 2021, 11 p.m. 24.0 ppb (23) 11.0 ppb (11) N/A 13.0 ppb (13) N/A 0.0 ppb (0) 10.0 ppb (10) N/A N/A -0.8 μg/m3 (0) 23.0
 
Sept. 17, 2021, 10 p.m. 23.0 ppb (22) 10.0 ppb (10) N/A 13.0 ppb (13) N/A 0.0 ppb (0) 13.0 ppb (13) N/A N/A -2.3 μg/m3 (0) 22.0
 
Sept. 17, 2021, 9 p.m. 22.0 ppb (21) 8.0 ppb (8) N/A 14.0 ppb (14) N/A 0.0 ppb (0) 17.0 ppb (16) N/A N/A N/A 21.0
 
Sept. 17, 2021, 8 p.m. 18.0 ppb (17) 6.0 ppb (6) N/A 11.0 ppb (11) N/A 0.0 ppb (0) 24.0 ppb (23) N/A N/A 4.0 μg/m3 (17) 23.0
 
Sept. 17, 2021, 7 p.m. 16.0 ppb (16) 5.0 ppb (5) N/A 10.0 ppb (10) N/A 0.0 ppb (0) 25.0 ppb (24) N/A N/A 5.2 μg/m3 (22) 24.0
 
Sept. 17, 2021, 6 p.m. 17.0 ppb (17) 7.0 ppb (7) N/A 10.0 ppb (10) N/A 0.0 ppb (0) 25.0 ppb (24) N/A N/A 4.5 μg/m3 (19) 24.0
 
Sept. 17, 2021, 5 p.m. 12.0 ppb (12) 4.0 ppb (4) N/A 8.0 ppb (8) N/A 0.0 ppb (0) 24.0 ppb (23) N/A N/A 3.9 μg/m3 (17) 23.0
 
Sept. 17, 2021, 4 p.m. 17.0 ppb (17) 7.0 ppb (7) N/A 9.0 ppb (9) N/A 0.0 ppb (0) 19.0 ppb (18) N/A N/A 1.8 μg/m3 (8) 18.0
 
Sept. 17, 2021, 3 p.m. 22.0 ppb (21) 12.0 ppb (12) N/A 10.0 ppb (10) N/A 0.0 ppb (0) 10.0 ppb (10) N/A N/A 2.8 μg/m3 (12) 21.0
 
Sept. 17, 2021, 2 p.m. 21.0 ppb (20) 11.0 ppb (11) N/A 10.0 ppb (10) N/A 0.0 ppb (0) 10.0 ppb (10) N/A N/A 1.2 μg/m3 (5) 20.0
 
Sept. 17, 2021, 1 p.m. 20.0 ppb (19) 10.0 ppb (10) N/A 9.0 ppb (9) N/A 0.0 ppb (0) 11.0 ppb (11) N/A N/A N/A 19.0
 
Sept. 17, 2021, noon 22.0 ppb (21) 12.0 ppb (12) N/A 9.0 ppb (9) N/A 0.0 ppb (0) 9.0 ppb (9) N/A N/A 1.8 μg/m3 (8) 21.0
 
Sept. 17, 2021, 11 a.m. 23.0 ppb (22) 12.0 ppb (12) N/A 11.0 ppb (11) N/A 0.0 ppb (0) 8.0 ppb (8) N/A N/A 4.3 μg/m3 (18) 22.0
 
Sept. 17, 2021, 10 a.m. 31.0 ppb (30) 17.0 ppb (17) N/A 13.0 ppb (13) N/A 0.0 ppb (0) N/A N/A N/A 5.5 μg/m3 (23) 30.0
 
Sept. 17, 2021, 9 a.m. 26.0 ppb (25) 12.0 ppb (12) N/A 13.0 ppb (13) N/A 0.0 ppb (0) 7.0 ppb (7) N/A N/A 4.7 μg/m3 (20) 25.0
 
Sept. 17, 2021, 8 a.m. 27.0 ppb (26) 12.0 ppb (12) N/A 15.0 ppb (15) N/A 0.0 ppb (0) 6.0 ppb (6) N/A N/A 5.7 μg/m3 (24) 26.0
 
Sept. 17, 2021, 7 a.m. 24.0 ppb (23) 10.0 ppb (10) N/A 13.0 ppb (13) N/A 0.0 ppb (0) 8.0 ppb (8) N/A N/A 6.2 μg/m3 (26) 26.0
 
Sept. 17, 2021, 6 a.m. 19.0 ppb (18) 7.0 ppb (7) N/A 12.0 ppb (12) N/A 0.0 ppb (0) 12.0 ppb (12) N/A N/A 5.7 μg/m3 (24) 24.0
 
Sept. 17, 2021, 5 a.m. 17.0 ppb (17) 6.0 ppb (6) N/A 11.0 ppb (11) N/A N/A 17.0 ppb (16) N/A N/A N/A 17.0
 
Sept. 17, 2021, 4 a.m. 15.0 ppb (15) 4.0 ppb (4) N/A 10.0 ppb (10) N/A 0.0 ppb (0) 18.0 ppb (17) N/A N/A 4.7 μg/m3 (20) 20.0
 
Sept. 17, 2021, 3 a.m. 28.0 ppb (27) 12.0 ppb (12) N/A 15.0 ppb (15) N/A 0.0 ppb (0) 9.0 ppb (9) N/A N/A 6.8 μg/m3 (29) 29.0
 
Sept. 17, 2021, 2 a.m. 21.0 ppb (20) 7.0 ppb (7) N/A 14.0 ppb (14) N/A 0.0 ppb (0) 11.0 ppb (11) N/A N/A 6.1 μg/m3 (26) 26.0
 
Sept. 17, 2021, 1 a.m. 25.0 ppb (24) 9.0 ppb (9) N/A 16.0 ppb (16) N/A 0.0 ppb (0) 5.0 ppb (5) N/A N/A 4.5 μg/m3 (19) 24.0
 
Sept. 17, 2021, midnight 31.0 ppb (30) 15.0 ppb (15) N/A 15.0 ppb (15) N/A 0.0 ppb (0) 0.0 ppb (0) N/A N/A 4.1 μg/m3 (18) 30.0
 
Sept. 16, 2021, 11 p.m. 16.0 ppb (16) 4.0 ppb (4) N/A 12.0 ppb (12) N/A 0.0 ppb (0) 5.0 ppb (5) N/A N/A 3.2 μg/m3 (14) 16.0
 
Sept. 16, 2021, 10 p.m. 26.0 ppb (25) 11.0 ppb (11) N/A 15.0 ppb (15) N/A 0.0 ppb (0) 7.0 ppb (7) N/A N/A 2.0 μg/m3 (9) 25.0
 
Sept. 16, 2021, 9 p.m. 27.0 ppb (26) 11.0 ppb (11) N/A 15.0 ppb (15) N/A 0.0 ppb (0) 12.0 ppb (12) N/A N/A N/A 26.0
 
Sept. 16, 2021, 8 p.m. 18.0 ppb (17) 7.0 ppb (7) N/A 10.0 ppb (10) N/A 0.0 ppb (0) 22.0 ppb (21) N/A N/A 3.6 μg/m3 (16) 21.0
 
Sept. 16, 2021, 7 p.m. 18.0 ppb (17) 8.0 ppb (8) N/A 10.0 ppb (10) N/A 0.0 ppb (0) 23.0 ppb (22) N/A N/A 4.2 μg/m3 (18) 22.0
 
Sept. 16, 2021, 5 p.m. 14.0 ppb (14) 6.0 ppb (6) N/A 7.0 ppb (7) N/A 0.0 ppb (0) 24.0 ppb (23) N/A N/A 4.8 μg/m3 (20) 23.0
 
Sept. 16, 2021, 4 p.m. 15.0 ppb (15) 7.0 ppb (7) N/A 7.0 ppb (7) N/A 0.0 ppb (0) 21.0 ppb (20) N/A N/A 3.6 μg/m3 (16) 20.0
 
Sept. 16, 2021, 3 p.m. 18.0 ppb (17) 9.0 ppb (9) N/A 9.0 ppb (9) N/A 0.0 ppb (0) 20.0 ppb (19) N/A N/A 3.4 μg/m3 (15) 19.0
 
Sept. 16, 2021, 2 p.m. 23.0 ppb (22) 12.0 ppb (12) N/A 10.0 ppb (10) N/A 0.0 ppb (0) 17.0 ppb (16) N/A N/A 1.7 μg/m3 (8) 22.0
 
Sept. 16, 2021, 1 p.m. 28.0 ppb (27) 16.0 ppb (16) N/A 11.0 ppb (11) N/A 0.0 ppb (0) 15.0 ppb (14) N/A N/A N/A 27.0
 
Sept. 16, 2021, noon 32.0 ppb (31) 18.0 ppb (17) N/A 14.0 ppb (14) N/A 0.0 ppb (0) 8.0 ppb (8) N/A N/A 1.6 μg/m3 (7) 31.0
 
Sept. 16, 2021, 11 a.m. 16.0 ppb (16) 7.0 ppb (7) N/A 9.0 ppb (9) N/A 0.0 ppb (0) 9.0 ppb (9) N/A N/A 2.3 μg/m3 (10) 16.0
 
Sept. 16, 2021, 10 a.m. 30.0 ppb (29) 17.0 ppb (17) N/A 13.0 ppb (13) N/A 0.0 ppb (0) N/A N/A N/A 2.2 μg/m3 (10) 29.0
 
Sept. 16, 2021, 9 a.m. 39.0 ppb (37) 24.0 ppb (23) N/A 15.0 ppb (15) N/A 0.0 ppb (0) N/A N/A N/A 2.3 μg/m3 (10) 37.0
 
Sept. 16, 2021, 8 a.m. 34.0 ppb (33) 19.0 ppb (18) N/A 15.0 ppb (15) N/A 0.0 ppb (0) 5.0 ppb (5) N/A N/A -0.4 μg/m3 (0) 33.0
 
Sept. 16, 2021, 7 a.m. 37.0 ppb (35) 21.0 ppb (20) N/A 15.0 ppb (15) N/A 0.0 ppb (0) 7.0 ppb (7) N/A N/A -2.9 μg/m3 (0) 35.0
 
Sept. 16, 2021, 6 a.m. 52.0 ppb (50) 34.0 ppb (33) N/A 17.0 ppb (17) N/A 0.0 ppb (0) 2.0 ppb (2) N/A N/A N/A 50.0
 
Sept. 16, 2021, 5 a.m. 32.0 ppb (31) 15.0 ppb (15) N/A 17.0 ppb (17) N/A N/A 2.0 ppb (2) N/A N/A N/A 31.0
 
Sept. 16, 2021, 4 a.m. 33.0 ppb (32) 17.0 ppb (17) N/A 16.0 ppb (16) N/A 0.0 ppb (0) 7.0 ppb (7) N/A N/A 1.8 μg/m3 (8) 32.0
 
Sept. 16, 2021, 3 a.m. 30.0 ppb (29) 14.0 ppb (14) N/A 16.0 ppb (16) N/A 0.0 ppb (0) 9.0 ppb (9) N/A N/A 2.6 μg/m3 (11) 29.0
 
Sept. 16, 2021, 2 a.m. 28.0 ppb (27) 11.0 ppb (11) N/A 16.0 ppb (16) N/A 0.0 ppb (0) 12.0 ppb (12) N/A N/A 3.2 μg/m3 (14) 27.0
 
Sept. 16, 2021, 1 a.m. 26.0 ppb (25) 8.0 ppb (8) N/A 17.0 ppb (17) N/A 0.0 ppb (0) 16.0 ppb (15) N/A N/A 6.7 μg/m3 (28) 28.0
 
Sept. 16, 2021, midnight 28.0 ppb (27) 8.0 ppb (8) N/A 19.0 ppb (18) N/A 0.0 ppb (0) 18.0 ppb (17) N/A N/A 11.2 μg/m3 (47) 47.0
 
Sept. 15, 2021, 11 p.m. 14.0 ppb (14) 3.0 ppb (3) N/A 10.0 ppb (10) N/A 0.0 ppb (0) 35.0 ppb (33) N/A N/A 16.5 μg/m3 (61) 61.0
 
Sept. 15, 2021, 10 p.m. 18.0 ppb (17) 6.0 ppb (6) N/A 11.0 ppb (11) N/A 0.0 ppb (0) 33.0 ppb (31) N/A N/A 22.4 μg/m3 (73) 73.0
 
Sept. 15, 2021, 9 p.m. 3.0 ppb (3) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 55.0 ppb (51) N/A N/A N/A 51.0
 
Sept. 15, 2021, 8 p.m. 3.0 ppb (3) 1.0 ppb (1) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 56.0 ppb (55) N/A N/A 17.5 μg/m3 (63) 63.0
 
Sept. 15, 2021, 7 p.m. 2.0 ppb (2) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 58.0 ppb (61) N/A N/A 19.9 μg/m3 (68) 68.0
 
Sept. 15, 2021, 6 p.m. 2.0 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 55.0 ppb (51) N/A N/A 21.0 μg/m3 (70) 70.0
 
Sept. 15, 2021, 5 p.m. 4.0 ppb (4) 1.0 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 50.0 ppb (47) N/A N/A 18.2 μg/m3 (64) 64.0
 
Sept. 15, 2021, 4 p.m. 4.0 ppb (4) 1.0 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 43.0 ppb (40) N/A N/A 16.1 μg/m3 (60) 60.0
 
Sept. 15, 2021, 3 p.m. 5.0 ppb (5) 1.0 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 30.0 ppb (28) N/A N/A 15.0 μg/m3 (58) 58.0
 
Sept. 15, 2021, 2 p.m. 6.0 ppb (6) 1.0 ppb (1) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 19.0 ppb (18) N/A N/A 10.6 μg/m3 (45) 45.0
 
Sept. 15, 2021, 1 p.m. 18.0 ppb (17) 7.0 ppb (7) N/A 11.0 ppb (11) N/A 0.0 ppb (0) 8.0 ppb (8) N/A N/A N/A 17.0
 
Sept. 15, 2021, noon 36.0 ppb (34) 24.0 ppb (23) N/A 12.0 ppb (12) N/A 0.0 ppb (0) 1.0 ppb (1) N/A N/A 4.3 μg/m3 (18) 34.0
 
Sept. 15, 2021, 11 a.m. 21.0 ppb (20) 15.0 ppb (15) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 6.0 ppb (6) N/A N/A 11.3 μg/m3 (48) 48.0
 
Sept. 15, 2021, 10 a.m. 48.0 ppb (46) 44.0 ppb (42) N/A 4.0 ppb (4) N/A 0.0 ppb (0) N/A N/A N/A 14.3 μg/m3 (56) 56.0
 
Sept. 15, 2021, 9 a.m. 101.0 ppb (101) 92.0 ppb (92) N/A 8.0 ppb (8) N/A 1.0 ppb (2) 0.0 ppb (0) N/A N/A 11.0 μg/m3 (46) 101.0
 
Sept. 15, 2021, 8 a.m. 89.0 ppb (89) 81.0 ppb (80) N/A 8.0 ppb (8) N/A 1.0 ppb (2) 0.0 ppb (0) N/A N/A 11.7 μg/m3 (49) 89.0
 
Sept. 15, 2021, 7 a.m. 83.0 ppb (82) 74.0 ppb (73) N/A 8.0 ppb (8) N/A 1.0 ppb (2) 0.0 ppb (0) N/A N/A 11.5 μg/m3 (48) 82.0
 
Sept. 15, 2021, 6 a.m. 45.0 ppb (43) 36.0 ppb (34) N/A 8.0 ppb (8) N/A 0.0 ppb (0) 0.0 ppb (0) N/A N/A 14.2 μg/m3 (56) 56.0
 
Sept. 15, 2021, 5 a.m. 25.0 ppb (24) 15.0 ppb (15) N/A 9.0 ppb (9) N/A N/A 0.0 ppb (0) N/A N/A N/A 24.0
 
Sept. 15, 2021, 4 a.m. 56.0 ppb (54) 39.0 ppb (37) N/A 17.0 ppb (17) N/A 0.0 ppb (0) 0.0 ppb (0) N/A N/A 14.3 μg/m3 (56) 56.0
 
Sept. 15, 2021, 3 a.m. 15.0 ppb (15) 9.0 ppb (9) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 16.0 ppb (15) N/A N/A 14.3 μg/m3 (56) 56.0
 
Sept. 15, 2021, 2 a.m. 8.0 ppb (8) 2.0 ppb (2) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 19.0 ppb (18) N/A N/A 14.9 μg/m3 (57) 57.0
 
Sept. 15, 2021, 1 a.m. 28.0 ppb (27) 9.0 ppb (9) N/A 19.0 ppb (18) N/A 0.0 ppb (0) 9.0 ppb (9) N/A N/A 15.0 μg/m3 (58) 58.0
 
Sept. 15, 2021, midnight 27.0 ppb (26) 7.0 ppb (7) N/A 19.0 ppb (18) N/A 0.0 ppb (0) 6.0 ppb (6) N/A N/A 13.5 μg/m3 (54) 54.0
 
Sept. 14, 2021, 11 p.m. 22.0 ppb (21) 6.0 ppb (6) N/A 15.0 ppb (15) N/A 0.0 ppb (0) 9.0 ppb (9) N/A N/A 8.6 μg/m3 (36) 36.0
 
Sept. 14, 2021, 10 p.m. 4.0 ppb (4) 0.0 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 20.0 ppb (19) N/A N/A 3.7 μg/m3 (16) 19.0
 
Sept. 14, 2021, 9 p.m. 8.0 ppb (8) 1.0 ppb (1) N/A 7.0 ppb (7) N/A 0.0 ppb (0) 31.0 ppb (29) N/A N/A N/A 29.0
 
Sept. 14, 2021, 8 p.m. 6.0 ppb (6) 1.0 ppb (1) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 41.0 ppb (38) N/A N/A 12.9 μg/m3 (53) 53.0
 
Sept. 14, 2021, 7 p.m. 3.0 ppb (3) 1.0 ppb (1) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 47.0 ppb (44) N/A N/A 14.2 μg/m3 (56) 56.0