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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Jan. 20, 2021, 7 p.m. | 2.0 ppb (2) | 1.0 ppb (1) | N/A | 2.0 ppb (2) | N/A | N/A | 33.0 ppb (31) | N/A | N/A | 5.0 μg/m3 (21) | 31.0 | |
| Jan. 20, 2021, 6 p.m. | 2.4 ppb (3) | 0.9 ppb (1) | 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 | |
| Jan. 20, 2021, 5 p.m. | 2.4 ppb (3) | 0.8 ppb (1) | N/A | 2.0 ppb (2) | N/A | N/A | 31.0 ppb (29) | N/A | N/A | 6.0 μg/m3 (25) | 29.0 | |
| Jan. 20, 2021, 4 p.m. | 2.7 ppb (3) | 0.9 ppb (1) | N/A | 2.0 ppb (2) | N/A | N/A | 30.0 ppb (28) | N/A | N/A | 7.0 μg/m3 (30) | 30.0 | |
| Jan. 20, 2021, 3 p.m. | 13.3 ppb (13) | 5.1 ppb (5) | N/A | 8.0 ppb (8) | N/A | N/A | 23.0 ppb (22) | N/A | N/A | 10.0 μg/m3 (42) | 42.0 | |
| Jan. 20, 2021, 2 p.m. | 33.7 ppb (32) | 15.3 ppb (15) | N/A | 19.0 ppb (18) | N/A | N/A | 9.0 ppb (9) | N/A | N/A | 13.0 μg/m3 (53) | 53.0 | |
| Jan. 20, 2021, 1 p.m. | 40.1 ppb (38) | 14.6 ppb (14) | N/A | 25.0 ppb (24) | N/A | N/A | 3.0 ppb (3) | N/A | N/A | 13.0 μg/m3 (53) | 53.0 | |
| Jan. 20, 2021, noon | 27.8 ppb (27) | 6.6 ppb (7) | N/A | 21.0 ppb (20) | N/A | N/A | 4.0 ppb (4) | N/A | N/A | 11.0 μg/m3 (46) | 46.0 | |
| Jan. 20, 2021, 11 a.m. | 22.1 ppb (21) | 1.5 ppb (2) | N/A | 21.0 ppb (20) | N/A | N/A | 6.0 ppb (6) | N/A | N/A | 10.0 μg/m3 (42) | 42.0 | |
| Jan. 20, 2021, 10 a.m. | 18.1 ppb (18) | 0.6 ppb (1) | N/A | 18.0 ppb (17) | N/A | N/A | 9.0 ppb (9) | N/A | N/A | 10.0 μg/m3 (42) | 42.0 | |
| Jan. 20, 2021, 9 a.m. | 18.5 ppb (18) | 0.6 ppb (1) | N/A | 18.0 ppb (17) | N/A | N/A | 10.0 ppb (10) | N/A | N/A | 11.0 μg/m3 (46) | 46.0 | |
| Jan. 20, 2021, 8 a.m. | 19.4 ppb (19) | 1.1 ppb (2) | N/A | 18.0 ppb (17) | N/A | N/A | N/A | N/A | N/A | 11.0 μg/m3 (46) | 46.0 | |
| Jan. 20, 2021, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 11.0 ppb (11) | N/A | N/A | 11.0 μg/m3 (46) | 46.0 | |
| Jan. 20, 2021, 6 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 15.0 ppb (14) | N/A | N/A | 10.0 μg/m3 (42) | 42.0 | |
| Jan. 20, 2021, 5 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 15.0 ppb (14) | N/A | N/A | 9.0 μg/m3 (38) | 38.0 | |
| Jan. 20, 2021, 4 a.m. | 13.4 ppb (13) | 1.1 ppb (2) | N/A | 12.0 ppb (12) | N/A | N/A | 17.0 ppb (16) | N/A | N/A | 8.0 μg/m3 (34) | 34.0 | |
| Jan. 20, 2021, 3 a.m. | 10.1 ppb (10) | 1.0 ppb (1) | N/A | 9.0 ppb (9) | N/A | N/A | 21.0 ppb (20) | N/A | N/A | 7.0 μg/m3 (30) | 30.0 | |
| Jan. 20, 2021, 2 a.m. | 11.5 ppb (11) | 0.7 ppb (1) | N/A | 11.0 ppb (11) | N/A | N/A | 19.0 ppb (18) | N/A | N/A | 8.0 μg/m3 (34) | 34.0 | |
| Jan. 20, 2021, 1 a.m. | 9.8 ppb (10) | 0.5 ppb (1) | N/A | 9.0 ppb (9) | N/A | N/A | 21.0 ppb (20) | N/A | N/A | 7.0 μg/m3 (30) | 30.0 | |
| Jan. 20, 2021, midnight | 6.8 ppb (7) | 0.5 ppb (1) | N/A | 6.0 ppb (6) | N/A | N/A | 23.0 ppb (22) | N/A | N/A | 6.0 μg/m3 (25) | 25.0 | |
| Jan. 19, 2021, 11 p.m. | 7.3 ppb (7) | 0.5 ppb (1) | N/A | 7.0 ppb (7) | N/A | N/A | 21.0 ppb (20) | N/A | N/A | 6.0 μg/m3 (25) | 25.0 | |
| Jan. 19, 2021, 10 p.m. | 5.9 ppb (6) | 0.5 ppb (1) | N/A | 5.0 ppb (5) | N/A | N/A | 21.0 ppb (20) | N/A | N/A | 5.0 μg/m3 (21) | 21.0 | |
| Jan. 19, 2021, 9 p.m. | 4.6 ppb (5) | 0.6 ppb (1) | N/A | 4.0 ppb (4) | N/A | N/A | 24.0 ppb (23) | N/A | N/A | 4.0 μg/m3 (17) | 23.0 | |
| Jan. 19, 2021, 8 p.m. | 2.8 ppb (3) | 0.5 ppb (1) | N/A | 2.0 ppb (2) | N/A | N/A | 24.0 ppb (23) | N/A | N/A | 4.0 μg/m3 (17) | 23.0 | |
| Jan. 19, 2021, 7 p.m. | 5.0 ppb (5) | 1.2 ppb (2) | N/A | 4.0 ppb (4) | N/A | N/A | 26.0 ppb (25) | N/A | N/A | 4.0 μg/m3 (17) | 25.0 | |
| Jan. 19, 2021, 6 p.m. | 4.9 ppb (5) | 1.2 ppb (2) | N/A | 4.0 ppb (4) | N/A | N/A | 27.0 ppb (25) | N/A | N/A | 4.0 μg/m3 (17) | 25.0 | |
| Jan. 19, 2021, 5 p.m. | 8.9 ppb (9) | 2.8 ppb (3) | N/A | 6.0 ppb (6) | N/A | N/A | 25.0 ppb (24) | N/A | N/A | 6.0 μg/m3 (25) | 25.0 | |
| Jan. 19, 2021, 4 p.m. | 9.0 ppb (9) | 3.3 ppb (4) | N/A | 6.0 ppb (6) | N/A | N/A | 26.0 ppb (25) | N/A | N/A | 6.0 μg/m3 (25) | 25.0 | |
| Jan. 19, 2021, 3 p.m. | 11.4 ppb (11) | 4.5 ppb (5) | N/A | 7.0 ppb (7) | N/A | N/A | 25.0 ppb (24) | N/A | N/A | 6.0 μg/m3 (25) | 25.0 | |
| Jan. 19, 2021, 2 p.m. | 16.4 ppb (16) | 5.9 ppb (6) | N/A | 11.0 ppb (11) | N/A | N/A | 22.0 ppb (21) | N/A | N/A | 6.0 μg/m3 (25) | 25.0 | |
| Jan. 19, 2021, 1 p.m. | 27.8 ppb (27) | 6.4 ppb (7) | N/A | 21.0 ppb (20) | N/A | N/A | 10.0 ppb (10) | N/A | N/A | 6.0 μg/m3 (25) | 27.0 | |
| Jan. 19, 2021, noon | 21.7 ppb (21) | 2.3 ppb (3) | N/A | 19.0 ppb (18) | N/A | N/A | 12.0 ppb (12) | N/A | N/A | 6.0 μg/m3 (25) | 25.0 | |
| Jan. 19, 2021, 11 a.m. | 14.9 ppb (15) | 0.7 ppb (1) | N/A | 14.0 ppb (14) | N/A | N/A | 18.0 ppb (17) | N/A | N/A | 5.0 μg/m3 (21) | 21.0 | |
| Jan. 19, 2021, 10 a.m. | 11.5 ppb (11) | 0.8 ppb (1) | N/A | 11.0 ppb (11) | N/A | N/A | 21.0 ppb (20) | N/A | N/A | 4.0 μg/m3 (17) | 20.0 | |
| Jan. 15, 2021, 5 p.m. | 11.8 ppb (12) | 3.0 ppb (3) | N/A | 9.0 ppb (9) | N/A | N/A | 14.0 ppb (13) | N/A | N/A | 22.0 μg/m3 (72) | 72.0 | |
| Jan. 15, 2021, 4 p.m. | 13.3 ppb (13) | 3.7 ppb (4) | N/A | 10.0 ppb (10) | N/A | N/A | 11.0 ppb (11) | N/A | N/A | 23.0 μg/m3 (74) | 74.0 | |
| Jan. 15, 2021, 3 p.m. | 13.5 ppb (13) | 3.9 ppb (4) | N/A | 10.0 ppb (10) | N/A | N/A | 10.0 ppb (10) | N/A | N/A | 24.0 μg/m3 (77) | 77.0 | |
| Jan. 15, 2021, 2 p.m. | 14.0 ppb (14) | 3.2 ppb (4) | N/A | 11.0 ppb (11) | N/A | N/A | 9.0 ppb (9) | N/A | N/A | 23.0 μg/m3 (74) | 74.0 | |
| Jan. 15, 2021, 1 p.m. | 14.3 ppb (14) | 2.4 ppb (3) | N/A | 12.0 ppb (12) | N/A | N/A | 7.0 ppb (7) | N/A | N/A | 24.0 μg/m3 (77) | 77.0 | |
| Jan. 15, 2021, noon | 13.5 ppb (13) | 1.3 ppb (2) | N/A | 12.0 ppb (12) | N/A | N/A | 10.0 ppb (10) | N/A | N/A | 20.0 μg/m3 (68) | 68.0 | |
| Jan. 15, 2021, 11 a.m. | 9.4 ppb (9) | 0.7 ppb (1) | N/A | 9.0 ppb (9) | N/A | N/A | 12.0 ppb (12) | N/A | N/A | 19.0 μg/m3 (66) | 66.0 | |
| Jan. 15, 2021, 10 a.m. | 14.1 ppb (14) | 2.5 ppb (3) | N/A | 12.0 ppb (12) | N/A | N/A | 6.0 ppb (6) | N/A | N/A | 21.0 μg/m3 (70) | 70.0 | |
| Jan. 15, 2021, 9 a.m. | 18.8 ppb (18) | 4.2 ppb (4) | N/A | 15.0 ppb (15) | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 21.0 μg/m3 (70) | 70.0 | |
| Jan. 15, 2021, 8 a.m. | 23.2 ppb (22) | 7.1 ppb (7) | N/A | 16.0 ppb (16) | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 28.0 μg/m3 (85) | 85.0 | |
| Jan. 15, 2021, 7 a.m. | 21.9 ppb (21) | 5.5 ppb (6) | N/A | 16.0 ppb (16) | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 31.0 μg/m3 (91) | 91.0 | |
| Jan. 15, 2021, 6 a.m. | 19.7 ppb (19) | 2.5 ppb (3) | N/A | 17.0 ppb (17) | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 32.0 μg/m3 (93) | 93.0 | |
| Jan. 15, 2021, 5 a.m. | 22.1 ppb (21) | 3.5 ppb (4) | N/A | 19.0 ppb (18) | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 35.0 μg/m3 (100) | 100.0 | |
| Jan. 15, 2021, 4 a.m. | 22.4 ppb (22) | 3.8 ppb (4) | N/A | 19.0 ppb (18) | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 31.0 μg/m3 (91) | 91.0 | |
| Jan. 15, 2021, 3 a.m. | 20.9 ppb (20) | 2.4 ppb (3) | N/A | 19.0 ppb (18) | N/A | N/A | 2.0 ppb (2) | N/A | N/A | 31.0 μg/m3 (91) | 91.0 | |
| Jan. 15, 2021, 2 a.m. | 23.2 ppb (22) | 3.3 ppb (4) | N/A | 20.0 ppb (19) | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 30.0 μg/m3 (89) | 89.0 | |
| Jan. 15, 2021, 1 a.m. | 24.0 ppb (23) | 3.5 ppb (4) | N/A | 21.0 ppb (20) | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 30.0 μg/m3 (89) | 89.0 | |
| Jan. 15, 2021, midnight | 24.8 ppb (24) | 3.3 ppb (4) | N/A | 22.0 ppb (21) | N/A | N/A | 2.0 ppb (2) | N/A | N/A | 32.0 μg/m3 (93) | 93.0 | |
| Jan. 14, 2021, 11 p.m. | 31.9 ppb (31) | 10.1 ppb (10) | N/A | 22.0 ppb (21) | N/A | N/A | 0.0 ppb (0) | N/A | N/A | 34.0 μg/m3 (98) | 98.0 | |
| Jan. 14, 2021, 10 p.m. | 28.2 ppb (27) | 6.5 ppb (7) | N/A | 22.0 ppb (21) | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 32.0 μg/m3 (93) | 93.0 | |
| Jan. 14, 2021, 9 p.m. | 25.5 ppb (25) | 4.7 ppb (5) | N/A | 21.0 ppb (20) | N/A | N/A | 3.0 ppb (3) | N/A | N/A | 30.0 μg/m3 (89) | 89.0 | |
| Jan. 14, 2021, 8 p.m. | 26.4 ppb (25) | 5.9 ppb (6) | N/A | 21.0 ppb (20) | N/A | N/A | 4.0 ppb (4) | N/A | N/A | 30.0 μg/m3 (89) | 89.0 | |
| Jan. 14, 2021, 7 p.m. | 28.6 ppb (27) | 8.3 ppb (8) | N/A | 20.0 ppb (19) | N/A | N/A | 5.0 ppb (5) | N/A | N/A | 30.0 μg/m3 (89) | 89.0 | |
| Jan. 14, 2021, 6 p.m. | 30.1 ppb (29) | 10.4 ppb (10) | N/A | 20.0 ppb (19) | N/A | N/A | 7.0 ppb (7) | N/A | N/A | 32.0 μg/m3 (93) | 93.0 | |
| Jan. 14, 2021, 5 p.m. | 33.1 ppb (32) | 13.1 ppb (13) | N/A | 20.0 ppb (19) | N/A | N/A | 7.0 ppb (7) | N/A | N/A | 31.0 μg/m3 (91) | 91.0 | |
| Jan. 14, 2021, 4 p.m. | 37.1 ppb (35) | 15.6 ppb (15) | N/A | 22.0 ppb (21) | N/A | N/A | 4.0 ppb (4) | N/A | N/A | 30.0 μg/m3 (89) | 89.0 | |
| Jan. 14, 2021, 3 p.m. | 33.4 ppb (32) | 14.3 ppb (14) | N/A | 19.0 ppb (18) | N/A | N/A | 5.0 ppb (5) | N/A | N/A | 29.0 μg/m3 (87) | 87.0 | |
| Jan. 14, 2021, 2 p.m. | 36.1 ppb (35) | 15.4 ppb (15) | N/A | 21.0 ppb (20) | N/A | N/A | 4.0 ppb (4) | N/A | N/A | 28.0 μg/m3 (85) | 85.0 | |
| Jan. 14, 2021, 1 p.m. | 42.6 ppb (41) | 19.2 ppb (19) | N/A | 23.0 ppb (22) | N/A | N/A | 2.0 ppb (2) | N/A | N/A | 28.0 μg/m3 (85) | 85.0 | |
| Jan. 14, 2021, noon | 46.7 ppb (45) | 20.7 ppb (20) | N/A | 26.0 ppb (25) | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 27.0 μg/m3 (83) | 83.0 | |
| Jan. 14, 2021, 11 a.m. | 57.0 ppb (55) | 30.0 ppb (29) | N/A | 27.0 ppb (26) | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 27.0 μg/m3 (83) | 83.0 | |
| Jan. 14, 2021, 10 a.m. | 35.7 ppb (34) | 10.5 ppb (10) | N/A | 25.0 ppb (24) | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 24.0 μg/m3 (77) | 77.0 | |
| Jan. 14, 2021, 9 a.m. | 31.8 ppb (30) | 6.4 ppb (7) | N/A | 25.0 ppb (24) | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 24.0 μg/m3 (77) | 77.0 | |
| Jan. 14, 2021, 8 a.m. | 23.1 ppb (22) | 1.2 ppb (2) | N/A | 22.0 ppb (21) | N/A | N/A | N/A | N/A | N/A | 24.0 μg/m3 (77) | 77.0 | |
| Jan. 14, 2021, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 4.0 ppb (4) | N/A | N/A | 25.0 μg/m3 (79) | 79.0 | |
| Jan. 14, 2021, 6 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 2.0 ppb (2) | N/A | N/A | 25.0 μg/m3 (79) | 79.0 | |
| Jan. 14, 2021, 5 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 2.0 ppb (2) | N/A | N/A | 25.0 μg/m3 (79) | 79.0 | |
| Jan. 14, 2021, 4 a.m. | 35.2 ppb (34) | 4.4 ppb (5) | N/A | 31.0 ppb (30) | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 24.0 μg/m3 (77) | 77.0 | |
| Jan. 14, 2021, 3 a.m. | 31.3 ppb (30) | 2.1 ppb (2) | N/A | 29.0 ppb (28) | N/A | N/A | 2.0 ppb (2) | N/A | N/A | 24.0 μg/m3 (77) | 77.0 | |
| Jan. 14, 2021, 2 a.m. | 28.5 ppb (27) | 1.3 ppb (2) | N/A | 27.0 ppb (26) | N/A | N/A | 4.0 ppb (4) | N/A | N/A | 23.0 μg/m3 (74) | 74.0 | |
| Jan. 14, 2021, 1 a.m. | 19.6 ppb (19) | 0.8 ppb (1) | N/A | 19.0 ppb (18) | N/A | N/A | 11.0 ppb (11) | N/A | N/A | 20.0 μg/m3 (68) | 68.0 | |
| Jan. 14, 2021, midnight | 18.8 ppb (18) | 1.0 ppb (1) | N/A | 18.0 ppb (17) | N/A | N/A | 12.0 ppb (12) | N/A | N/A | 20.0 μg/m3 (68) | 68.0 | |
| Jan. 13, 2021, 11 p.m. | 17.1 ppb (17) | 1.0 ppb (1) | N/A | 16.0 ppb (16) | N/A | N/A | 14.0 ppb (13) | N/A | N/A | 18.0 μg/m3 (64) | 64.0 | |
| Jan. 13, 2021, 10 p.m. | 15.2 ppb (15) | 0.9 ppb (1) | N/A | 14.0 ppb (14) | N/A | N/A | 16.0 ppb (15) | N/A | N/A | 16.0 μg/m3 (60) | 60.0 | |
| Jan. 13, 2021, 9 p.m. | 12.3 ppb (12) | 0.8 ppb (1) | N/A | 12.0 ppb (12) | N/A | N/A | 20.0 ppb (19) | N/A | N/A | 14.0 μg/m3 (55) | 55.0 | |
| Jan. 13, 2021, 8 p.m. | 8.1 ppb (8) | 0.8 ppb (1) | N/A | 7.0 ppb (7) | N/A | N/A | 25.0 ppb (24) | N/A | N/A | 12.0 μg/m3 (50) | 50.0 | |
| Jan. 13, 2021, 7 p.m. | 6.6 ppb (7) | 1.2 ppb (2) | N/A | 5.0 ppb (5) | N/A | N/A | 26.0 ppb (25) | N/A | N/A | 11.0 μg/m3 (46) | 46.0 | |
| Jan. 13, 2021, 6 p.m. | 6.6 ppb (7) | 1.5 ppb (2) | N/A | 5.0 ppb (5) | N/A | N/A | 24.0 ppb (23) | N/A | N/A | 10.0 μg/m3 (42) | 42.0 | |
| Jan. 13, 2021, 5 p.m. | 5.9 ppb (6) | 1.8 ppb (2) | N/A | 4.0 ppb (4) | N/A | N/A | 26.0 ppb (25) | N/A | N/A | 9.0 μg/m3 (38) | 38.0 | |
| Jan. 13, 2021, 4 p.m. | 10.2 ppb (10) | 4.1 ppb (4) | N/A | 6.0 ppb (6) | N/A | N/A | 21.0 ppb (20) | N/A | N/A | 11.0 μg/m3 (46) | 46.0 | |
| Jan. 13, 2021, 3 p.m. | 10.4 ppb (10) | 4.2 ppb (4) | N/A | 6.0 ppb (6) | N/A | N/A | 20.0 ppb (19) | N/A | N/A | 10.0 μg/m3 (42) | 42.0 | |
| Jan. 13, 2021, 2 p.m. | 39.7 ppb (38) | 22.1 ppb (21) | N/A | 18.0 ppb (17) | N/A | N/A | 11.0 ppb (11) | N/A | N/A | 13.0 μg/m3 (53) | 53.0 | |
| Jan. 13, 2021, 1 p.m. | 70.7 ppb (69) | 47.1 ppb (45) | N/A | 24.0 ppb (23) | N/A | N/A | 2.0 ppb (2) | N/A | N/A | 14.0 μg/m3 (55) | 69.0 | |
| Jan. 13, 2021, noon | 58.5 ppb (56) | 35.0 ppb (34) | N/A | 24.0 ppb (23) | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 12.0 μg/m3 (50) | 56.0 | |
| Jan. 13, 2021, 11 a.m. | 32.5 ppb (31) | 11.9 ppb (12) | N/A | 21.0 ppb (20) | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 10.0 μg/m3 (42) | 42.0 | |
| Jan. 13, 2021, 10 a.m. | 16.5 ppb (16) | 1.2 ppb (2) | N/A | 15.0 ppb (15) | N/A | N/A | 6.0 ppb (6) | N/A | N/A | 9.0 μg/m3 (38) | 38.0 | |
| Jan. 13, 2021, 9 a.m. | 14.0 ppb (14) | 0.7 ppb (1) | N/A | 13.0 ppb (13) | N/A | N/A | 12.0 ppb (12) | N/A | N/A | 10.0 μg/m3 (42) | 42.0 | |
| Jan. 13, 2021, 8 a.m. | 12.0 ppb (12) | 0.9 ppb (1) | N/A | 11.0 ppb (11) | N/A | N/A | 16.0 ppb (15) | N/A | N/A | 10.0 μg/m3 (42) | 42.0 | |
| Jan. 13, 2021, 7 a.m. | 7.3 ppb (7) | 0.4 ppb (1) | N/A | 7.0 ppb (7) | N/A | N/A | 19.0 ppb (18) | N/A | N/A | 9.0 μg/m3 (38) | 38.0 | |
| Jan. 13, 2021, 6 a.m. | 5.7 ppb (6) | 0.4 ppb (1) | N/A | 5.0 ppb (5) | N/A | N/A | 22.0 ppb (21) | N/A | N/A | 9.0 μg/m3 (38) | 38.0 | |
| Jan. 13, 2021, 5 a.m. | 5.8 ppb (6) | 0.5 ppb (1) | N/A | 5.0 ppb (5) | N/A | N/A | 22.0 ppb (21) | N/A | N/A | 10.0 μg/m3 (42) | 42.0 | |
| Jan. 13, 2021, 4 a.m. | 5.9 ppb (6) | 0.5 ppb (1) | N/A | 5.0 ppb (5) | N/A | N/A | 23.0 ppb (22) | N/A | N/A | 11.0 μg/m3 (46) | 46.0 | |
| Jan. 13, 2021, 3 a.m. | 6.6 ppb (7) | 0.5 ppb (1) | N/A | 6.0 ppb (6) | N/A | N/A | 22.0 ppb (21) | N/A | N/A | 11.0 μg/m3 (46) | 46.0 | |
| Jan. 13, 2021, 2 a.m. | 10.9 ppb (11) | 0.5 ppb (1) | N/A | 10.0 ppb (10) | N/A | N/A | 19.0 ppb (18) | N/A | N/A | 13.0 μg/m3 (53) | 53.0 | |
| Jan. 13, 2021, 1 a.m. | 10.9 ppb (11) | 0.6 ppb (1) | N/A | 10.0 ppb (10) | N/A | N/A | 19.0 ppb (18) | N/A | N/A | 13.0 μg/m3 (53) | 53.0 | |
| Jan. 13, 2021, midnight | 8.6 ppb (9) | 0.4 ppb (1) | N/A | 8.0 ppb (8) | N/A | N/A | 22.0 ppb (21) | N/A | N/A | 14.0 μg/m3 (55) | 55.0 | |
| Jan. 12, 2021, 11 p.m. | 8.6 ppb (9) | 0.5 ppb (1) | N/A | 8.0 ppb (8) | N/A | N/A | 23.0 ppb (22) | N/A | N/A | 13.0 μg/m3 (53) | 53.0 | |
| Jan. 12, 2021, 10 p.m. | 10.6 ppb (10) | 0.6 ppb (1) | N/A | 10.0 ppb (10) | N/A | N/A | 21.0 ppb (20) | N/A | N/A | 11.0 μg/m3 (46) | 46.0 | |
| Jan. 12, 2021, 9 p.m. | 8.5 ppb (9) | 0.5 ppb (1) | N/A | 8.0 ppb (8) | N/A | N/A | 23.0 ppb (22) | N/A | N/A | 10.0 μg/m3 (42) | 42.0 | |
| Jan. 12, 2021, 8 p.m. | 6.7 ppb (7) | 0.8 ppb (1) | N/A | 6.0 ppb (6) | N/A | N/A | 26.0 ppb (25) | N/A | N/A | 9.0 μg/m3 (38) | 38.0 | |
| Jan. 12, 2021, 7 p.m. | 12.0 ppb (12) | 2.0 ppb (2) | N/A | 11.0 ppb (11) | N/A | N/A | 22.0 ppb (21) | N/A | N/A | 11.0 μg/m3 (46) | 46.0 | |
| Jan. 12, 2021, 6 p.m. | 27.0 ppb (26) | 8.0 ppb (8) | N/A | 19.0 ppb (18) | N/A | N/A | 12.0 ppb (12) | N/A | N/A | 15.0 μg/m3 (58) | 58.0 | |
| Jan. 12, 2021, 5 p.m. | 63.0 ppb (61) | 35.0 ppb (34) | N/A | 28.0 ppb (27) | N/A | N/A | 4.0 ppb (4) | N/A | N/A | 21.0 μg/m3 (70) | 70.0 | |
| Jan. 12, 2021, 4 p.m. | 109.0 ppb (103) | 78.0 ppb (77) | N/A | 31.0 ppb (30) | N/A | N/A | 2.0 ppb (2) | N/A | N/A | 26.0 μg/m3 (81) | 103.0 | |
| Jan. 12, 2021, 3 p.m. | 112.0 ppb (104) | 85.0 ppb (85) | N/A | 27.0 ppb (26) | N/A | N/A | 2.0 ppb (2) | N/A | N/A | 26.0 μg/m3 (81) | 104.0 | |
| Jan. 12, 2021, 2 p.m. | 86.0 ppb (86) | 63.0 ppb (61) | N/A | 22.0 ppb (21) | N/A | N/A | 2.0 ppb (2) | N/A | N/A | 26.0 μg/m3 (81) | 86.0 | |
| Jan. 12, 2021, 1 p.m. | 46.0 ppb (44) | 31.0 ppb (30) | N/A | 15.0 ppb (15) | N/A | N/A | 2.0 ppb (2) | N/A | N/A | 23.0 μg/m3 (74) | 74.0 | |
| Jan. 12, 2021, noon | 33.0 ppb (32) | 19.0 ppb (18) | N/A | 14.0 ppb (14) | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 21.0 μg/m3 (70) | 70.0 | |
| Jan. 12, 2021, 11 a.m. | 46.0 ppb (44) | 29.0 ppb (28) | N/A | 17.0 ppb (17) | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 23.0 μg/m3 (74) | 74.0 | |
| Jan. 12, 2021, 10 a.m. | 34.0 ppb (33) | 18.0 ppb (17) | N/A | 17.0 ppb (17) | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 24.0 μg/m3 (77) | 77.0 | |
| Jan. 12, 2021, 9 a.m. | 37.0 ppb (35) | 18.0 ppb (17) | N/A | 19.0 ppb (18) | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 24.0 μg/m3 (77) | 77.0 | |
| Jan. 12, 2021, 8 a.m. | 41.0 ppb (39) | 22.0 ppb (21) | N/A | 19.0 ppb (18) | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 23.0 μg/m3 (74) | 74.0 | |
| Jan. 12, 2021, 7 a.m. | 41.0 ppb (39) | 20.0 ppb (19) | N/A | 21.0 ppb (20) | N/A | N/A | N/A | N/A | N/A | 21.0 μg/m3 (70) | 70.0 | |
| Jan. 12, 2021, 6 a.m. | 38.0 ppb (36) | 16.0 ppb (16) | N/A | 21.0 ppb (20) | N/A | N/A | N/A | N/A | N/A | 20.0 μg/m3 (68) | 68.0 | |
| Jan. 12, 2021, 5 a.m. | 33.0 ppb (32) | 11.0 ppb (11) | N/A | 22.0 ppb (21) | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 18.0 μg/m3 (64) | 64.0 | |
| Jan. 12, 2021, 4 a.m. | 37.0 ppb (35) | 13.0 ppb (13) | N/A | 23.0 ppb (22) | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 17.0 μg/m3 (62) | 62.0 | |
| Jan. 12, 2021, 3 a.m. | 52.0 ppb (50) | 26.0 ppb (25) | N/A | 27.0 ppb (26) | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 21.0 μg/m3 (70) | 70.0 | |
| Jan. 12, 2021, 2 a.m. | 52.0 ppb (50) | 24.0 ppb (23) | N/A | 28.0 ppb (27) | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 23.0 μg/m3 (74) | 74.0 | |
| Jan. 12, 2021, 1 a.m. | 34.0 ppb (33) | 8.0 ppb (8) | N/A | 26.0 ppb (25) | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 15.0 μg/m3 (58) | 58.0 | |
| Jan. 12, 2021, midnight | 31.0 ppb (30) | 5.0 ppb (5) | N/A | 26.0 ppb (25) | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 14.0 μg/m3 (55) | 55.0 | |
| Jan. 11, 2021, 11 p.m. | 35.0 ppb (34) | 7.0 ppb (7) | N/A | 29.0 ppb (28) | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 14.0 μg/m3 (55) | 55.0 | |
| Jan. 11, 2021, 10 p.m. | 27.0 ppb (26) | 2.0 ppb (2) | N/A | 24.0 ppb (23) | N/A | N/A | 3.0 ppb (3) | N/A | N/A | 13.0 μg/m3 (53) | 53.0 | |
| Jan. 11, 2021, 9 p.m. | 9.0 ppb (9) | 3.0 ppb (3) | N/A | 6.0 ppb (6) | N/A | N/A | 3.0 ppb (3) | N/A | N/A | 17.0 μg/m3 (62) | 62.0 | |
| Jan. 11, 2021, 8 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 7.0 ppb (7) | N/A | N/A | 15.0 μg/m3 (58) | 58.0 | |
| Jan. 11, 2021, 7 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 14.0 ppb (13) | N/A | N/A | 13.0 μg/m3 (53) | 53.0 | |
| Jan. 11, 2021, 6 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 15.0 ppb (14) | N/A | N/A | 13.0 μg/m3 (53) | 53.0 | |
| Jan. 11, 2021, 5 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 14.0 ppb (13) | N/A | N/A | 14.0 μg/m3 (55) | 55.0 | |
| Jan. 11, 2021, 4 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 12.0 ppb (12) | N/A | N/A | 15.0 μg/m3 (58) | 58.0 | |
| Jan. 11, 2021, 3 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | |
| Jan. 11, 2021, 2 p.m. | 25.0 ppb (24) | 12.0 ppb (12) | N/A | 13.0 ppb (13) | N/A | N/A | 7.0 ppb (7) | N/A | N/A | 17.0 μg/m3 (62) | 62.0 | |
| Jan. 11, 2021, 1 p.m. | 38.0 ppb (36) | 22.0 ppb (21) | N/A | 16.0 ppb (16) | N/A | N/A | 3.0 ppb (3) | N/A | N/A | 17.0 μg/m3 (62) | 62.0 | |
| Jan. 11, 2021, noon | 21.0 ppb (20) | 9.0 ppb (9) | N/A | 12.0 ppb (12) | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 16.0 μg/m3 (60) | 60.0 | |
| Jan. 11, 2021, 11 a.m. | 23.0 ppb (22) | 8.0 ppb (8) | N/A | 15.0 ppb (15) | N/A | N/A | 1.0 ppb (1) | N/A | N/A | 15.0 μg/m3 (58) | 58.0 | |
| Jan. 11, 2021, 10 a.m. | 25.0 ppb (24) | 7.0 ppb (7) | N/A | 18.0 ppb (17) | N/A | N/A | 2.0 ppb (2) | N/A | N/A | 15.0 μg/m3 (58) | 58.0 | |
| Jan. 11, 2021, 9 a.m. | 19.0 ppb (18) | 5.0 ppb (5) | N/A | 15.0 ppb (15) | N/A | N/A | 4.0 ppb (4) | N/A | N/A | 14.0 μg/m3 (55) | 55.0 | |
| Jan. 11, 2021, 8 a.m. | 18.0 ppb (17) | 3.0 ppb (3) | N/A | 14.0 ppb (14) | N/A | N/A | N/A | N/A | N/A | 15.0 μg/m3 (58) | 58.0 | |
| Jan. 11, 2021, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 3.0 ppb (3) | N/A | N/A | 14.0 μg/m3 (55) | 55.0 | |
| Jan. 11, 2021, 6 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 4.0 ppb (4) | N/A | N/A | 15.0 μg/m3 (58) | 58.0 | |
| Jan. 11, 2021, 5 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 8.0 ppb (8) | N/A | N/A | 16.0 μg/m3 (60) | 60.0 | |
| Jan. 11, 2021, 4 a.m. | 14.0 ppb (14) | 1.0 ppb (1) | N/A | 13.0 ppb (13) | N/A | N/A | 12.0 ppb (12) | N/A | N/A | 11.0 μg/m3 (46) | 46.0 | |
| Jan. 11, 2021, 3 a.m. | 7.0 ppb (7) | 0.0 ppb (0) | N/A | 7.0 ppb (7) | N/A | N/A | 21.0 ppb (20) | N/A | N/A | 11.0 μg/m3 (46) | 46.0 | |
| Jan. 11, 2021, 2 a.m. | 9.0 ppb (9) | 1.0 ppb (1) | N/A | 8.0 ppb (8) | N/A | N/A | 22.0 ppb (21) | N/A | N/A | 10.0 μg/m3 (42) | 42.0 | |
| Jan. 11, 2021, 1 a.m. | 16.0 ppb (16) | 1.0 ppb (1) | N/A | 15.0 ppb (15) | N/A | N/A | 18.0 ppb (17) | N/A | N/A | 12.0 μg/m3 (50) | 50.0 | |
| Jan. 11, 2021, midnight | 18.0 ppb (17) | 1.0 ppb (1) | N/A | 18.0 ppb (17) | N/A | N/A | 16.0 ppb (15) | N/A | N/A | 14.0 μg/m3 (55) | 55.0 | |
| Jan. 10, 2021, 11 p.m. | 18.0 ppb (17) | 1.0 ppb (1) | N/A | 18.0 ppb (17) | N/A | N/A | 17.0 ppb (16) | N/A | N/A | 14.0 μg/m3 (55) | 55.0 | |
| Jan. 10, 2021, 10 p.m. | 8.0 ppb (8) | 0.0 ppb (0) | N/A | 8.0 ppb (8) | N/A | N/A | 28.0 ppb (26) | N/A | N/A | 8.0 μg/m3 (34) | 34.0 | |
| Jan. 10, 2021, 9 p.m. | 3.0 ppb (3) | 1.0 ppb (1) | N/A | 2.0 ppb (2) | N/A | N/A | 34.0 ppb (32) | N/A | N/A | 5.0 μg/m3 (21) | 32.0 | |
| Jan. 10, 2021, 8 p.m. | 1.0 ppb (1) | 1.0 ppb (1) | N/A | 0.0 ppb (0) | N/A | N/A | 37.0 ppb (35) | N/A | N/A | 4.0 μg/m3 (17) | 35.0 | |
| Jan. 10, 2021, 7 p.m. | 1.0 ppb (1) | 1.0 ppb (1) | N/A | 0.0 ppb (0) | N/A | N/A | 37.0 ppb (35) | N/A | N/A | 4.0 μg/m3 (17) | 35.0 | |
| Jan. 10, 2021, 6 p.m. | 1.0 ppb (1) | 1.0 ppb (1) | N/A | 0.0 ppb (0) | N/A | N/A | 37.0 ppb (35) | N/A | N/A | 4.0 μg/m3 (17) | 35.0 | |
| Jan. 10, 2021, 5 p.m. | 1.0 ppb (1) | 1.0 ppb (1) | N/A | 0.0 ppb (0) | N/A | N/A | 37.0 ppb (35) | N/A | N/A | 4.0 μg/m3 (17) | 35.0 | |
| Jan. 10, 2021, 4 p.m. | 1.0 ppb (1) | 1.0 ppb (1) | N/A | 0.0 ppb (0) | N/A | N/A | 37.0 ppb (35) | N/A | N/A | 4.0 μg/m3 (17) | 35.0 | |
| Jan. 10, 2021, 3 p.m. | 1.0 ppb (1) | 1.0 ppb (1) | N/A | 0.0 ppb (0) | N/A | N/A | 37.0 ppb (35) | N/A | N/A | 4.0 μg/m3 (17) | 35.0 | |
| Jan. 10, 2021, 2 p.m. | 1.0 ppb (1) | 1.0 ppb (1) | N/A | 0.0 ppb (0) | N/A | N/A | 36.0 ppb (34) | N/A | N/A | 4.0 μg/m3 (17) | 34.0 | |
| Jan. 10, 2021, 1 p.m. | 1.0 ppb (1) | 1.0 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 35.0 ppb (33) | N/A | N/A | 4.0 μg/m3 (17) | 33.0 | |
| Jan. 10, 2021, noon | 1.0 ppb (1) | 1.0 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 35.0 ppb (33) | N/A | N/A | 4.0 μg/m3 (17) | 33.0 | |
| Jan. 10, 2021, 11 a.m. | 2.0 ppb (2) | 0.0 ppb (0) | N/A | 1.0 ppb (1) | N/A | N/A | 35.0 ppb (33) | N/A | N/A | 4.0 μg/m3 (17) | 33.0 | |
| Jan. 10, 2021, 10 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 | 4.0 μg/m3 (17) | 34.0 | |
| Jan. 10, 2021, 9 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 | 4.0 μg/m3 (17) | 34.0 | |
| Jan. 10, 2021, 8 a.m. | 1.0 ppb (1) | 1.0 ppb (1) | N/A | 1.0 ppb (1) | N/A | N/A | 37.0 ppb (35) | N/A | N/A | 4.0 μg/m3 (17) | 35.0 | |
| Jan. 10, 2021, 7 a.m. | 1.0 ppb (1) | 0.0 ppb (0) | N/A | 0.0 ppb (0) | N/A | N/A | 38.0 ppb (36) | N/A | N/A | 4.0 μg/m3 (17) | 36.0 | |
| Jan. 10, 2021, 6 a.m. | 1.0 ppb (1) | 0.0 ppb (0) | N/A | 0.0 ppb (0) | N/A | N/A | 38.0 ppb (36) | N/A | N/A | 3.0 μg/m3 (13) | 36.0 | |
| Jan. 10, 2021, 5 a.m. | 1.0 ppb (1) | 0.0 ppb (0) | N/A | 0.0 ppb (0) | N/A | N/A | 39.0 ppb (37) | N/A | N/A | 3.0 μg/m3 (13) | 37.0 | |
| Jan. 10, 2021, 4 a.m. | 1.0 ppb (1) | 1.0 ppb (1) | N/A | 0.0 ppb (0) | N/A | N/A | 39.0 ppb (37) | N/A | N/A | 3.0 μg/m3 (13) | 37.0 |