ID: 2009

AQSQID: 340410007

Site Name: Columbia

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

Updated: Jan. 24, 2021, 3:32 p.m.

Location: Knowlton (Delaware Rd), NJ

Reporting: True, Located: True

Current AQI: 35.0

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
Jan. 24, 2021, 2 p.m. 5.0 ppb (5) 2.0 ppb (2) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 37.0 ppb (35) N/A N/A 4.2 μg/m3 (18) 35.0
 
Jan. 24, 2021, 1 p.m. 10.0 ppb (10) 4.0 ppb (4) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 35.0 ppb (33) N/A N/A N/A 33.0
 
Jan. 24, 2021, noon 6.0 ppb (6) 2.0 ppb (2) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 35.0 ppb (33) N/A N/A 2.9 μg/m3 (13) 33.0
 
Jan. 24, 2021, 11 a.m. 6.0 ppb (6) 3.0 ppb (3) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 36.0 ppb (34) N/A N/A 2.5 μg/m3 (11) 34.0
 
Jan. 24, 2021, 10 a.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 1.6 μg/m3 (7) 7.0
 
Jan. 24, 2021, 9 a.m. 5.0 ppb (5) 2.0 ppb (2) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 35.0 ppb (33) N/A N/A 2.8 μg/m3 (12) 33.0
 
Jan. 24, 2021, 8 a.m. 2.0 ppb (2) 0.0 ppb (0) N/A 1.0 ppb (1) N/A N/A 37.0 ppb (35) N/A N/A 2.9 μg/m3 (13) 35.0
 
Jan. 24, 2021, 7 a.m. 2.0 ppb (2) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 37.0 ppb (35) N/A N/A 3.6 μg/m3 (16) 35.0
 
Jan. 24, 2021, 6 a.m. 3.0 ppb (3) 1.0 ppb (1) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 36.0 ppb (34) N/A N/A 5.2 μg/m3 (22) 34.0
 
Jan. 24, 2021, 5 a.m. 3.0 ppb (3) 1.0 ppb (1) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 35.0 ppb (33) N/A N/A N/A 33.0
 
Jan. 24, 2021, 4 a.m. 3.0 ppb (3) 1.0 ppb (1) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 34.0 ppb (32) N/A N/A 3.4 μg/m3 (15) 32.0
 
Jan. 24, 2021, 3 a.m. 6.0 ppb (6) 2.0 ppb (2) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 33.0 ppb (31) N/A N/A 3.8 μg/m3 (16) 31.0
 
Jan. 24, 2021, 2 a.m. 4.0 ppb (4) 1.0 ppb (1) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 33.0 ppb (31) N/A N/A 3.7 μg/m3 (16) 31.0
 
Jan. 24, 2021, 1 a.m. 4.0 ppb (4) 1.0 ppb (1) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 33.0 ppb (31) N/A N/A 3.5 μg/m3 (15) 31.0
 
Jan. 24, 2021, midnight 3.0 ppb (3) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 33.0 ppb (31) N/A N/A 5.3 μg/m3 (23) 31.0
 
Jan. 23, 2021, 11 p.m. 4.0 ppb (4) 1.0 ppb (1) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 32.0 ppb (30) N/A N/A 5.5 μg/m3 (23) 30.0
 
Jan. 23, 2021, 10 p.m. 12.0 ppb (12) 5.0 ppb (5) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 31.0 ppb (29) N/A N/A 3.6 μg/m3 (16) 29.0
 
Jan. 23, 2021, 9 p.m. 6.0 ppb (6) 2.0 ppb (2) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 33.0 ppb (31) N/A N/A N/A 31.0
 
Jan. 23, 2021, 8 p.m. 8.0 ppb (8) 4.0 ppb (4) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 31.0 ppb (29) N/A N/A 0.4 μg/m3 (2) 29.0
 
Jan. 23, 2021, 7 p.m. 6.0 ppb (6) 3.0 ppb (3) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 32.0 ppb (30) N/A N/A 1.1 μg/m3 (5) 30.0
 
Jan. 23, 2021, 6 p.m. 5.0 ppb (5) 2.0 ppb (2) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 32.0 ppb (30) N/A N/A 2.1 μg/m3 (9) 30.0
 
Jan. 23, 2021, 5 p.m. 5.0 ppb (5) 2.0 ppb (2) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 32.0 ppb (30) N/A N/A 1.9 μg/m3 (8) 30.0
 
Jan. 23, 2021, 4 p.m. 6.0 ppb (6) 3.0 ppb (3) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 30.0 ppb (28) N/A N/A 1.6 μg/m3 (7) 28.0
 
Jan. 23, 2021, 3 p.m. 5.0 ppb (5) 2.0 ppb (2) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 31.0 ppb (29) N/A N/A 0.9 μg/m3 (4) 29.0
 
Jan. 23, 2021, 2 p.m. 5.0 ppb (5) 2.0 ppb (2) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 31.0 ppb (29) N/A N/A 2.1 μg/m3 (9) 29.0
 
Jan. 23, 2021, 1 p.m. 5.0 ppb (5) 2.0 ppb (2) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 31.0 ppb (29) N/A N/A N/A 29.0
 
Jan. 23, 2021, noon 4.0 ppb (4) 1.0 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 31.0 ppb (29) N/A N/A 3.0 μg/m3 (13) 29.0
 
Jan. 23, 2021, 11 a.m. 5.0 ppb (5) 2.0 ppb (2) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 32.0 ppb (30) N/A N/A 0.8 μg/m3 (4) 30.0
 
Jan. 23, 2021, 10 a.m. 3.0 ppb (3) 1.0 ppb (1) N/A 1.0 ppb (1) N/A 0.0 ppb (0) N/A N/A N/A 0.8 μg/m3 (4) 4.0
 
Jan. 23, 2021, 9 a.m. 7.0 ppb (7) 3.0 ppb (3) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 32.0 ppb (30) N/A N/A 1.7 μg/m3 (8) 30.0
 
Jan. 23, 2021, 8 a.m. 6.0 ppb (6) 2.0 ppb (2) N/A 3.0 ppb (3) N/A N/A 31.0 ppb (29) N/A N/A 2.1 μg/m3 (9) 29.0
 
Jan. 23, 2021, 7 a.m. 2.0 ppb (2) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 33.0 ppb (31) N/A N/A 2.6 μg/m3 (11) 31.0
 
Jan. 23, 2021, 6 a.m. 5.0 ppb (5) 2.0 ppb (2) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 32.0 ppb (30) N/A N/A 2.4 μg/m3 (10) 30.0
 
Jan. 23, 2021, 5 a.m. 3.0 ppb (3) 1.0 ppb (1) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 31.0 ppb (29) N/A N/A N/A 29.0
 
Jan. 23, 2021, 4 a.m. 9.0 ppb (9) 3.0 ppb (3) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 27.0 ppb (25) N/A N/A 2.0 μg/m3 (9) 25.0
 
Jan. 23, 2021, 3 a.m. 10.0 ppb (10) 4.0 ppb (4) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 26.0 ppb (25) N/A N/A 4.0 μg/m3 (17) 25.0
 
Jan. 23, 2021, 2 a.m. 19.0 ppb (18) 7.0 ppb (7) N/A 12.0 ppb (12) N/A 0.0 ppb (0) 19.0 ppb (18) N/A N/A 5.4 μg/m3 (23) 23.0
 
Jan. 23, 2021, 1 a.m. 31.0 ppb (30) 14.0 ppb (14) N/A 16.0 ppb (16) N/A 0.0 ppb (0) 14.0 ppb (13) N/A N/A 6.7 μg/m3 (28) 30.0
 
Jan. 23, 2021, midnight 10.0 ppb (10) 2.0 ppb (2) N/A 7.0 ppb (7) N/A 0.0 ppb (0) 22.0 ppb (21) N/A N/A 7.9 μg/m3 (33) 33.0
 
Jan. 22, 2021, 11 p.m. 6.0 ppb (6) 1.0 ppb (1) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 27.0 ppb (25) N/A N/A 8.0 μg/m3 (34) 34.0
 
Jan. 22, 2021, 10 p.m. 4.0 ppb (4) 0.0 ppb (0) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 29.0 ppb (27) N/A N/A 6.5 μg/m3 (28) 28.0
 
Jan. 22, 2021, 9 p.m. 3.0 ppb (3) 0.0 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 32.0 ppb (30) N/A N/A N/A 30.0
 
Jan. 22, 2021, 8 p.m. 2.0 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 33.0 ppb (31) N/A N/A 1.0 μg/m3 (5) 31.0
 
Jan. 22, 2021, 7 p.m. 3.0 ppb (3) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 34.0 ppb (32) N/A N/A 0.0 μg/m3 (0) 32.0
 
Jan. 22, 2021, 6 p.m. 5.0 ppb (5) 2.0 ppb (2) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 33.0 ppb (31) N/A N/A 0.6 μg/m3 (3) 31.0
 
Jan. 22, 2021, 5 p.m. 2.0 ppb (2) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 34.0 ppb (32) N/A N/A 1.3 μg/m3 (6) 32.0
 
Jan. 22, 2021, 4 p.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 33.0 ppb (31) N/A N/A 4.2 μg/m3 (18) 31.0
 
Jan. 22, 2021, 3 p.m. 2.0 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 32.0 ppb (30) N/A N/A 7.2 μg/m3 (31) 31.0
 
Jan. 22, 2021, 2 p.m. 4.0 ppb (4) 0.0 ppb (0) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 27.0 ppb (25) N/A N/A 10.8 μg/m3 (46) 46.0
 
Jan. 22, 2021, 1 p.m. 7.0 ppb (7) 1.0 ppb (1) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 27.0 ppb (25) N/A N/A N/A 25.0
 
Jan. 22, 2021, noon 35.0 ppb (34) 19.0 ppb (18) N/A 16.0 ppb (16) N/A 0.0 ppb (0) 6.0 ppb (6) N/A N/A 16.1 μg/m3 (60) 60.0
 
Jan. 22, 2021, 11 a.m. 95.0 ppb (95) 73.0 ppb (72) N/A 22.0 ppb (21) N/A 0.0 ppb (0) 0.0 ppb (0) N/A N/A 19.8 μg/m3 (68) 95.0
 
Jan. 22, 2021, 10 a.m. 141.0 ppb (109) 116.0 ppb (104) N/A 24.0 ppb (23) N/A 1.0 ppb (2) N/A N/A N/A 21.8 μg/m3 (72) 109.0
 
Jan. 22, 2021, 9 a.m. 70.0 ppb (69) 48.0 ppb (46) N/A 21.0 ppb (20) N/A 0.0 ppb (0) 1.0 ppb (1) N/A N/A 20.4 μg/m3 (69) 69.0
 
Jan. 22, 2021, 8 a.m. 71.0 ppb (70) 50.0 ppb (48) N/A 21.0 ppb (20) N/A N/A 0.0 ppb (0) N/A N/A 18.0 μg/m3 (64) 70.0
 
Jan. 22, 2021, 7 a.m. 58.0 ppb (56) 37.0 ppb (35) N/A 21.0 ppb (20) N/A 0.0 ppb (0) 0.0 ppb (0) N/A N/A 15.7 μg/m3 (59) 59.0
 
Jan. 22, 2021, 6 a.m. 59.0 ppb (57) 37.0 ppb (35) N/A 21.0 ppb (20) N/A 0.0 ppb (0) 0.0 ppb (0) N/A N/A 14.9 μg/m3 (57) 57.0
 
Jan. 22, 2021, 5 a.m. 48.0 ppb (46) 27.0 ppb (26) N/A 21.0 ppb (20) N/A 0.0 ppb (0) 3.0 ppb (3) N/A N/A N/A 46.0
 
Jan. 22, 2021, 4 a.m. 81.0 ppb (80) 58.0 ppb (56) N/A 23.0 ppb (22) N/A 0.0 ppb (0) 0.0 ppb (0) N/A N/A 20.6 μg/m3 (69) 80.0
 
Jan. 22, 2021, 3 a.m. 83.0 ppb (82) 59.0 ppb (57) N/A 24.0 ppb (23) N/A 0.0 ppb (0) 0.0 ppb (0) N/A N/A 20.5 μg/m3 (69) 82.0
 
Jan. 22, 2021, 2 a.m. 119.0 ppb (105) 93.0 ppb (93) N/A 26.0 ppb (25) N/A 1.0 ppb (2) 0.0 ppb (0) N/A N/A 21.0 μg/m3 (70) 105.0
 
Jan. 22, 2021, 1 a.m. 98.0 ppb (98) 73.0 ppb (72) N/A 24.0 ppb (23) N/A 0.0 ppb (0) 1.0 ppb (1) N/A N/A 18.6 μg/m3 (65) 98.0
 
Jan. 22, 2021, midnight 76.0 ppb (75) 51.0 ppb (49) N/A 25.0 ppb (24) N/A 0.0 ppb (0) 0.0 ppb (0) N/A N/A 16.7 μg/m3 (61) 75.0
 
Jan. 21, 2021, 11 p.m. 39.0 ppb (37) 16.0 ppb (16) N/A 22.0 ppb (21) N/A 0.0 ppb (0) 0.0 ppb (0) N/A N/A 14.4 μg/m3 (56) 56.0
 
Jan. 21, 2021, 10 p.m. 28.0 ppb (27) 9.0 ppb (9) N/A 18.0 ppb (17) N/A 0.0 ppb (0) 11.0 ppb (11) N/A N/A 11.0 μg/m3 (46) 46.0
 
Jan. 21, 2021, 9 p.m. 10.0 ppb (10) 2.0 ppb (2) N/A 8.0 ppb (8) N/A 0.0 ppb (0) 25.0 ppb (24) N/A N/A N/A 24.0
 
Jan. 21, 2021, 8 p.m. 6.0 ppb (6) 1.0 ppb (1) N/A 5.0 ppb (5) N/A 0.0 ppb (0) N/A N/A N/A 5.7 μg/m3 (24) 24.0
 
Jan. 21, 2021, 7 p.m. 6.0 ppb (6) 1.0 ppb (1) N/A 5.0 ppb (5) N/A 0.0 ppb (0) N/A N/A N/A 6.5 μg/m3 (28) 28.0
 
Jan. 21, 2021, 6 p.m. 11.0 ppb (11) 3.0 ppb (3) N/A 7.0 ppb (7) N/A 0.0 ppb (0) 25.0 ppb (24) N/A N/A 6.0 μg/m3 (25) 25.0
 
Jan. 21, 2021, 5 p.m. 11.0 ppb (11) 3.0 ppb (3) N/A 8.0 ppb (8) N/A 0.0 ppb (0) 24.0 ppb (23) N/A N/A 5.2 μg/m3 (22) 23.0
 
Jan. 21, 2021, 4 p.m. 10.0 ppb (10) 2.0 ppb (2) N/A 8.0 ppb (8) N/A 0.0 ppb (0) 24.0 ppb (23) N/A N/A 3.4 μg/m3 (15) 23.0
 
Jan. 21, 2021, 3 p.m. 11.0 ppb (11) 3.0 ppb (3) N/A 8.0 ppb (8) N/A 0.0 ppb (0) 24.0 ppb (23) N/A N/A 0.1 μg/m3 (1) 23.0
 
Jan. 21, 2021, 2 p.m. 13.0 ppb (13) 4.0 ppb (4) N/A 9.0 ppb (9) N/A 0.0 ppb (0) 22.0 ppb (21) N/A N/A 1.8 μg/m3 (8) 21.0
 
Jan. 21, 2021, 1 p.m. 18.0 ppb (17) 4.0 ppb (4) N/A 13.0 ppb (13) N/A 0.0 ppb (0) 13.0 ppb (13) N/A N/A N/A 17.0
 
Jan. 21, 2021, noon 96.0 ppb (96) 75.0 ppb (74) N/A 21.0 ppb (20) N/A 0.0 ppb (0) 1.0 ppb (1) N/A N/A 14.2 μg/m3 (56) 96.0
 
Jan. 21, 2021, 11 a.m. 112.0 ppb (104) 90.0 ppb (90) N/A 21.0 ppb (20) N/A 1.0 ppb (2) 0.0 ppb (0) N/A N/A 15.7 μg/m3 (59) 104.0
 
Jan. 21, 2021, 10 a.m. 136.0 ppb (108) 112.0 ppb (104) N/A 23.0 ppb (22) N/A 1.0 ppb (2) N/A N/A N/A 15.4 μg/m3 (58) 108.0
 
Jan. 21, 2021, 9 a.m. 123.0 ppb (106) 99.0 ppb (99) N/A 23.0 ppb (22) N/A 1.0 ppb (2) 0.0 ppb (0) N/A N/A 14.7 μg/m3 (57) 106.0
 
Jan. 21, 2021, 8 a.m. 93.0 ppb (93) 70.0 ppb (69) N/A 22.0 ppb (21) N/A N/A 0.0 ppb (0) N/A N/A 11.3 μg/m3 (48) 93.0
 
Jan. 21, 2021, 7 a.m. 60.0 ppb (58) 39.0 ppb (37) N/A 20.0 ppb (19) N/A 0.0 ppb (0) 0.0 ppb (0) N/A N/A 8.2 μg/m3 (35) 58.0
 
Jan. 21, 2021, 6 a.m. 29.0 ppb (28) 11.0 ppb (11) N/A 18.0 ppb (17) N/A 0.0 ppb (0) 3.0 ppb (3) N/A N/A 6.3 μg/m3 (27) 28.0
 
Jan. 21, 2021, 5 a.m. 36.0 ppb (34) 15.0 ppb (15) N/A 21.0 ppb (20) N/A 0.0 ppb (0) 3.0 ppb (3) N/A N/A N/A 34.0
 
Jan. 21, 2021, 4 a.m. 47.0 ppb (45) 28.0 ppb (27) N/A 18.0 ppb (17) N/A 0.0 ppb (0) 7.0 ppb (7) N/A N/A 4.5 μg/m3 (19) 45.0
 
Jan. 21, 2021, 3 a.m. 48.0 ppb (46) 21.0 ppb (20) N/A 26.0 ppb (25) N/A 0.0 ppb (0) 2.0 ppb (2) N/A N/A 3.7 μg/m3 (16) 46.0
 
Jan. 21, 2021, 2 a.m. 28.0 ppb (27) 12.0 ppb (12) N/A 15.0 ppb (15) N/A 0.0 ppb (0) 10.0 ppb (10) N/A N/A 3.4 μg/m3 (15) 27.0
 
Jan. 21, 2021, 1 a.m. 37.0 ppb (35) 17.0 ppb (17) N/A 20.0 ppb (19) N/A 0.0 ppb (0) 11.0 ppb (11) N/A N/A 2.8 μg/m3 (12) 35.0
 
Jan. 21, 2021, midnight 35.0 ppb (34) 19.0 ppb (18) N/A 16.0 ppb (16) N/A 0.0 ppb (0) 17.0 ppb (16) N/A N/A 1.9 μg/m3 (8) 34.0
 
Jan. 20, 2021, 11 p.m. 21.0 ppb (20) 9.0 ppb (9) N/A 11.0 ppb (11) N/A 0.0 ppb (0) 23.0 ppb (22) N/A N/A 1.6 μg/m3 (7) 22.0
 
Jan. 20, 2021, 10 p.m. 22.0 ppb (21) 10.0 ppb (10) N/A 11.0 ppb (11) N/A 0.0 ppb (0) 24.0 ppb (23) N/A N/A 1.1 μg/m3 (5) 23.0
 
Jan. 20, 2021, 9 p.m. 17.0 ppb (17) 8.0 ppb (8) N/A 9.0 ppb (9) N/A 0.0 ppb (0) 26.0 ppb (25) N/A N/A N/A 25.0
 
Jan. 20, 2021, 8 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 33.0 ppb (31) N/A N/A 3.0 μg/m3 (13) 31.0
 
Jan. 20, 2021, 7 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 34.0 ppb (32) N/A N/A 4.1 μg/m3 (18) 32.0
 
Jan. 20, 2021, 6 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 34.0 ppb (32) N/A N/A 4.5 μg/m3 (19) 32.0
 
Jan. 20, 2021, 5 p.m. 18.0 ppb (17) 10.0 ppb (10) N/A 7.0 ppb (7) N/A 0.0 ppb (0) 28.0 ppb (26) N/A N/A 2.4 μg/m3 (10) 26.0
 
Jan. 20, 2021, 4 p.m. 12.0 ppb (12) 7.0 ppb (7) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 29.0 ppb (27) N/A N/A 2.2 μg/m3 (10) 27.0
 
Jan. 20, 2021, 3 p.m. 13.0 ppb (13) 8.0 ppb (8) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 28.0 ppb (26) N/A N/A 4.9 μg/m3 (21) 26.0
 
Jan. 20, 2021, 2 p.m. 18.0 ppb (17) 9.0 ppb (9) N/A 8.0 ppb (8) N/A 0.0 ppb (0) 24.0 ppb (23) N/A N/A 7.9 μg/m3 (33) 33.0
 
Jan. 20, 2021, 1 p.m. 9.0 ppb (9) 2.0 ppb (2) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 22.0 ppb (21) N/A N/A N/A 21.0
 
Jan. 20, 2021, noon 10.0 ppb (10) 2.0 ppb (2) N/A 7.0 ppb (7) N/A 0.0 ppb (0) 21.0 ppb (20) N/A N/A 10.4 μg/m3 (44) 44.0
 
Jan. 20, 2021, 11 a.m. 28.0 ppb (27) 14.0 ppb (14) N/A 14.0 ppb (14) N/A 0.0 ppb (0) 18.0 ppb (17) N/A N/A 14.8 μg/m3 (57) 57.0
 
Jan. 20, 2021, 10 a.m. 89.0 ppb (89) 69.0 ppb (67) N/A 19.0 ppb (18) N/A 1.0 ppb (2) N/A N/A N/A 15.5 μg/m3 (59) 89.0
 
Jan. 20, 2021, 9 a.m. 76.0 ppb (75) 54.0 ppb (51) N/A 21.0 ppb (20) N/A N/A 0.0 ppb (0) N/A N/A 14.6 μg/m3 (57) 75.0
 
Jan. 20, 2021, 8 a.m. 99.0 ppb (99) 75.0 ppb (74) N/A 24.0 ppb (23) N/A N/A 0.0 ppb (0) N/A N/A 12.8 μg/m3 (53) 99.0
 
Jan. 20, 2021, 7 a.m. 116.0 ppb (104) 93.0 ppb (93) N/A 23.0 ppb (22) N/A 1.0 ppb (2) 1.0 ppb (1) N/A N/A 9.0 μg/m3 (38) 104.0
 
Jan. 20, 2021, 6 a.m. 95.0 ppb (95) 73.0 ppb (72) N/A 21.0 ppb (20) N/A 0.0 ppb (0) 4.0 ppb (4) N/A N/A 8.1 μg/m3 (34) 95.0
 
Jan. 20, 2021, 5 a.m. 25.0 ppb (24) 9.0 ppb (9) N/A 16.0 ppb (16) N/A 0.0 ppb (0) 9.0 ppb (9) N/A N/A N/A 24.0
 
Jan. 20, 2021, 4 a.m. 25.0 ppb (24) 9.0 ppb (9) N/A 16.0 ppb (16) N/A 0.0 ppb (0) 2.0 ppb (2) N/A N/A 12.0 μg/m3 (50) 50.0
 
Jan. 20, 2021, 3 a.m. 29.0 ppb (28) 11.0 ppb (11) N/A 17.0 ppb (17) N/A 0.0 ppb (0) 1.0 ppb (1) N/A N/A 13.9 μg/m3 (55) 55.0
 
Jan. 20, 2021, 2 a.m. 38.0 ppb (36) 19.0 ppb (18) N/A 18.0 ppb (17) N/A 0.0 ppb (0) 0.0 ppb (0) N/A N/A 14.9 μg/m3 (57) 57.0
 
Jan. 20, 2021, 1 a.m. 33.0 ppb (32) 14.0 ppb (14) N/A 18.0 ppb (17) N/A 0.0 ppb (0) 2.0 ppb (2) N/A N/A 13.9 μg/m3 (55) 55.0
 
Jan. 20, 2021, midnight 28.0 ppb (27) 12.0 ppb (12) N/A 16.0 ppb (16) N/A 0.0 ppb (0) 2.0 ppb (2) N/A N/A 12.2 μg/m3 (52) 52.0
 
Jan. 19, 2021, 11 p.m. 16.0 ppb (16) 4.0 ppb (4) N/A 11.0 ppb (11) N/A 0.0 ppb (0) 9.0 ppb (9) N/A N/A 10.8 μg/m3 (46) 46.0
 
Jan. 19, 2021, 10 p.m. 11.0 ppb (11) 4.0 ppb (4) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 20.0 ppb (19) N/A N/A 9.0 μg/m3 (38) 38.0
 
Jan. 19, 2021, 9 p.m. 2.0 ppb (2) 0.0 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 29.0 ppb (27) N/A N/A N/A 27.0
 
Jan. 19, 2021, 8 p.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 7.6 μg/m3 (32) 32.0
 
Jan. 19, 2021, 7 p.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 7.1 μg/m3 (30) 30.0
 
Jan. 19, 2021, 6 p.m. 3.0 ppb (3) 0.0 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 27.0 ppb (25) N/A N/A 5.4 μg/m3 (23) 25.0
 
Jan. 19, 2021, 5 p.m. 2.0 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 28.0 ppb (26) N/A N/A 5.7 μg/m3 (24) 26.0
 
Jan. 19, 2021, 4 p.m. 1.0 ppb (1) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 29.0 ppb (27) N/A N/A 4.2 μg/m3 (18) 27.0
 
Jan. 19, 2021, 3 p.m. 2.0 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 27.0 ppb (25) N/A N/A 3.8 μg/m3 (16) 25.0
 
Jan. 19, 2021, 2 p.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 29.0 ppb (27) N/A N/A 4.9 μg/m3 (21) 27.0
 
Jan. 19, 2021, 1 p.m. 2.0 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 29.0 ppb (27) N/A N/A N/A 27.0
 
Jan. 19, 2021, noon 2.0 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 27.0 ppb (25) N/A N/A 5.5 μg/m3 (23) 25.0
 
Jan. 19, 2021, 11 a.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 7.1 μg/m3 (30) 30.0
 
Jan. 19, 2021, 10 a.m. 16.0 ppb (16) 8.0 ppb (8) N/A 7.0 ppb (7) N/A 0.0 ppb (0) N/A N/A N/A 7.4 μg/m3 (31) 31.0
 
Jan. 19, 2021, 9 a.m. 7.0 ppb (7) 1.0 ppb (1) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 15.0 ppb (14) N/A N/A 7.6 μg/m3 (32) 32.0
 
Jan. 19, 2021, 8 a.m. 9.0 ppb (9) 2.0 ppb (2) N/A 6.0 ppb (6) N/A N/A 15.0 ppb (14) N/A N/A 5.7 μg/m3 (24) 24.0
 
Jan. 19, 2021, 7 a.m. 5.0 ppb (5) 0.0 ppb (0) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 19.0 ppb (18) N/A N/A 5.4 μg/m3 (23) 23.0
 
Jan. 19, 2021, 6 a.m. 3.0 ppb (3) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 20.0 ppb (19) N/A N/A 5.1 μg/m3 (22) 22.0
 
Jan. 19, 2021, 5 a.m. 3.0 ppb (3) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 21.0 ppb (20) N/A N/A N/A 20.0
 
Jan. 19, 2021, 4 a.m. 3.0 ppb (3) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 21.0 ppb (20) N/A N/A 5.3 μg/m3 (23) 23.0
 
Jan. 19, 2021, 3 a.m. 7.0 ppb (7) 1.0 ppb (1) N/A 5.0 ppb (5) N/A 0.0 ppb (0) 20.0 ppb (19) N/A N/A 5.7 μg/m3 (24) 24.0
 
Jan. 19, 2021, 2 a.m. 2.0 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 21.0 ppb (20) N/A N/A 4.9 μg/m3 (21) 21.0
 
Jan. 19, 2021, 1 a.m. 16.0 ppb (16) 13.0 ppb (13) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 19.0 ppb (18) N/A N/A 5.1 μg/m3 (22) 22.0
 
Jan. 19, 2021, midnight 21.0 ppb (20) 15.0 ppb (15) N/A 6.0 ppb (6) N/A 0.0 ppb (0) 16.0 ppb (15) N/A N/A 4.9 μg/m3 (21) 21.0
 
Jan. 18, 2021, 11 p.m. 24.0 ppb (23) 12.0 ppb (12) N/A 11.0 ppb (11) N/A 0.0 ppb (0) 11.0 ppb (11) N/A N/A 3.9 μg/m3 (17) 23.0
 
Jan. 18, 2021, 10 p.m. 12.0 ppb (12) 4.0 ppb (4) N/A 8.0 ppb (8) N/A 0.0 ppb (0) 15.0 ppb (14) N/A N/A 2.8 μg/m3 (12) 14.0
 
Jan. 18, 2021, 9 p.m. 5.0 ppb (5) 1.0 ppb (1) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 20.0 ppb (19) N/A N/A N/A 19.0
 
Jan. 18, 2021, 8 p.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 1.7 μg/m3 (8) 8.0
 
Jan. 18, 2021, 7 p.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 1.2 μg/m3 (5) 5.0
 
Jan. 18, 2021, 6 p.m. 3.0 ppb (3) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 19.0 ppb (18) N/A N/A 1.7 μg/m3 (8) 18.0
 
Jan. 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) 18.0 ppb (17) N/A N/A 3.1 μg/m3 (13) 17.0
 
Jan. 18, 2021, 4 p.m. 4.0 ppb (4) 1.0 ppb (1) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 18.0 ppb (17) N/A N/A 3.1 μg/m3 (13) 17.0
 
Jan. 18, 2021, 3 p.m. 3.0 ppb (3) 1.0 ppb (1) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 18.0 ppb (17) N/A N/A 4.7 μg/m3 (20) 20.0
 
Jan. 18, 2021, 2 p.m. 6.0 ppb (6) 2.0 ppb (2) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 17.0 ppb (16) N/A N/A 6.6 μg/m3 (28) 28.0
 
Jan. 18, 2021, 1 p.m. 25.0 ppb (24) 14.0 ppb (14) N/A 10.0 ppb (10) N/A 0.0 ppb (0) 8.0 ppb (8) N/A N/A N/A 24.0
 
Jan. 18, 2021, noon 31.0 ppb (30) 19.0 ppb (18) N/A 12.0 ppb (12) N/A 0.0 ppb (0) 1.0 ppb (1) N/A N/A 12.9 μg/m3 (53) 53.0
 
Jan. 18, 2021, 11 a.m. 22.0 ppb (21) 10.0 ppb (10) N/A 12.0 ppb (12) N/A 0.0 ppb (0) 0.0 ppb (0) N/A N/A 13.3 μg/m3 (54) 54.0
 
Jan. 18, 2021, 10 a.m. 34.0 ppb (33) 20.0 ppb (19) N/A 13.0 ppb (13) N/A 0.0 ppb (0) N/A N/A N/A 12.6 μg/m3 (53) 53.0
 
Jan. 18, 2021, 9 a.m. 41.0 ppb (39) 25.0 ppb (24) N/A 15.0 ppb (15) N/A N/A 0.0 ppb (0) N/A N/A 11.3 μg/m3 (48) 48.0
 
Jan. 18, 2021, 8 a.m. 30.0 ppb (29) 14.0 ppb (14) N/A 15.0 ppb (15) N/A N/A 2.0 ppb (2) N/A N/A 11.3 μg/m3 (48) 48.0
 
Jan. 18, 2021, 7 a.m. 19.0 ppb (18) 6.0 ppb (6) N/A 12.0 ppb (12) N/A 0.0 ppb (0) 10.0 ppb (10) N/A N/A 9.0 μg/m3 (38) 38.0
 
Jan. 18, 2021, 6 a.m. 18.0 ppb (17) 6.0 ppb (6) N/A 11.0 ppb (11) N/A 0.0 ppb (0) 12.0 ppb (12) N/A N/A 7.2 μg/m3 (31) 31.0
 
Jan. 18, 2021, 5 a.m. 4.0 ppb (4) 0.0 ppb (0) N/A 4.0 ppb (4) N/A 0.0 ppb (0) 23.0 ppb (22) N/A N/A N/A 22.0
 
Jan. 18, 2021, 4 a.m. 11.0 ppb (11) 3.0 ppb (3) N/A 7.0 ppb (7) N/A 0.0 ppb (0) 20.0 ppb (19) N/A N/A 6.2 μg/m3 (26) 26.0
 
Jan. 18, 2021, 3 a.m. 3.0 ppb (3) 0.0 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 25.0 ppb (24) N/A N/A 4.7 μg/m3 (20) 24.0
 
Jan. 18, 2021, 2 a.m. 2.0 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 26.0 ppb (25) N/A N/A 5.1 μg/m3 (22) 25.0
 
Jan. 18, 2021, 1 a.m. 4.0 ppb (4) 0.0 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 25.0 ppb (24) N/A N/A 5.9 μg/m3 (25) 25.0
 
Jan. 18, 2021, midnight 2.0 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 26.0 ppb (25) N/A N/A 7.7 μg/m3 (33) 33.0
 
Jan. 17, 2021, 11 p.m. 2.0 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 26.0 ppb (25) N/A N/A 9.0 μg/m3 (38) 38.0
 
Jan. 17, 2021, 10 p.m. 2.0 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 28.0 ppb (26) N/A N/A 8.4 μg/m3 (36) 36.0
 
Jan. 17, 2021, 9 p.m. 3.0 ppb (3) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 27.0 ppb (25) N/A N/A N/A 25.0
 
Jan. 17, 2021, 8 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 26.0 ppb (25) N/A N/A 3.2 μg/m3 (14) 25.0
 
Jan. 17, 2021, 7 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 28.0 ppb (26) N/A N/A 2.4 μg/m3 (10) 26.0
 
Jan. 17, 2021, 6 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 28.0 ppb (26) N/A N/A 3.7 μg/m3 (16) 26.0
 
Jan. 17, 2021, 5 p.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 27.0 ppb (25) N/A N/A 4.3 μg/m3 (18) 25.0
 
Jan. 17, 2021, 4 p.m. 1.0 ppb (1) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 26.0 ppb (25) N/A N/A 4.4 μg/m3 (19) 25.0
 
Jan. 17, 2021, 3 p.m. 2.0 ppb (2) 0.0 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 26.0 ppb (25) N/A N/A 4.8 μg/m3 (20) 25.0