Simi Valley (Simi Valley High School) CA, US: 34.2775, -118.6847
| Date Observed (UTC) | NOX | NO | NOY | NO2 | NO2Y | SO2 | OZONE | CO | PM10 | PM2.5 | AQI | AQI/500 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Jan. 27, 2020, 2 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 39.0 ppb (30) | N/A | 5.0 μg/m3 (5) | 2.0 μg/m3 (8) | 30.0 | |
| Jan. 27, 2020, 1 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 42.0 ppb (32) | N/A | 4.0 μg/m3 (4) | 2.0 μg/m3 (8) | 32.0 | |
| Jan. 27, 2020, noon | N/A | N/A | N/A | N/A | N/A | N/A | 39.0 ppb (30) | N/A | 6.0 μg/m3 (5) | 3.0 μg/m3 (12) | 30.0 | |
| Jan. 27, 2020, 11 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 39.0 ppb (30) | N/A | 8.0 μg/m3 (7) | 4.0 μg/m3 (17) | 30.0 | |
| Jan. 27, 2020, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 39.0 ppb (30) | N/A | 7.0 μg/m3 (6) | 6.0 μg/m3 (25) | 30.0 | |
| Jan. 27, 2020, 9 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 6.0 μg/m3 (5) | 7.0 μg/m3 (29) | 29.0 | |
| Jan. 27, 2020, 8 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 37.0 ppb (28) | N/A | 8.0 μg/m3 (7) | 2.0 μg/m3 (8) | 28.0 | |
| Jan. 27, 2020, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 38.0 ppb (29) | N/A | 6.0 μg/m3 (5) | 4.0 μg/m3 (17) | 29.0 | |
| Jan. 27, 2020, 6 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 38.0 ppb (29) | N/A | 9.0 μg/m3 (8) | 5.0 μg/m3 (21) | 29.0 | |
| Jan. 27, 2020, 5 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 36.0 ppb (28) | N/A | 6.0 μg/m3 (5) | 6.0 μg/m3 (25) | 28.0 | |
| Jan. 27, 2020, 4 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 26.0 ppb (20) | N/A | 18.0 μg/m3 (16) | 9.0 μg/m3 (38) | 38.0 | |
| Jan. 27, 2020, 3 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 28.0 ppb (22) | N/A | 15.0 μg/m3 (14) | 9.0 μg/m3 (38) | 38.0 | |
| Jan. 27, 2020, 2 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 21.0 ppb (16) | N/A | 21.0 μg/m3 (19) | 17.0 μg/m3 (61) | 61.0 | |
| Jan. 27, 2020, 1 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 32.0 ppb (25) | N/A | 16.0 μg/m3 (15) | 8.0 μg/m3 (33) | 33.0 | |
| Jan. 27, 2020, midnight | N/A | N/A | N/A | N/A | N/A | N/A | 38.0 ppb (29) | N/A | 16.0 μg/m3 (15) | 9.0 μg/m3 (38) | 38.0 | |
| Jan. 26, 2020, 11 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 39.0 ppb (30) | N/A | 13.0 μg/m3 (12) | 10.0 μg/m3 (42) | 42.0 | |
| Jan. 26, 2020, 10 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 42.0 ppb (32) | N/A | 17.0 μg/m3 (15) | 11.0 μg/m3 (46) | 46.0 | |
| Jan. 26, 2020, 9 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 41.0 ppb (32) | N/A | 17.0 μg/m3 (15) | 12.0 μg/m3 (50) | 50.0 | |
| Jan. 26, 2020, 8 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 34.0 ppb (26) | N/A | 19.0 μg/m3 (17) | 9.0 μg/m3 (38) | 38.0 | |
| Jan. 26, 2020, 7 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 27.0 ppb (21) | N/A | 19.0 μg/m3 (17) | 10.0 μg/m3 (42) | 42.0 | |
| Jan. 26, 2020, 6 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 18.0 ppb (14) | N/A | 33.0 μg/m3 (30) | 30.0 μg/m3 (88) | 88.0 | |
| Jan. 26, 2020, 5 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 13.0 ppb (10) | N/A | 42.0 μg/m3 (38) | 36.0 μg/m3 (101) | 101.0 | |
| Jan. 26, 2020, 4 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 14.0 ppb (11) | N/A | 31.0 μg/m3 (28) | 31.0 μg/m3 (90) | 90.0 | |
| Jan. 26, 2020, 3 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 12.0 ppb (9) | N/A | 26.0 μg/m3 (24) | 21.0 μg/m3 (69) | 69.0 | |
| Jan. 26, 2020, 2 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 15.0 ppb (12) | N/A | 24.0 μg/m3 (22) | 21.0 μg/m3 (69) | 69.0 | |
| Jan. 26, 2020, 1 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 11.0 ppb (8) | N/A | 37.0 μg/m3 (34) | 19.0 μg/m3 (65) | 65.0 | |
| Jan. 26, 2020, noon | N/A | N/A | N/A | N/A | N/A | N/A | 6.0 ppb (5) | N/A | 35.0 μg/m3 (32) | 19.0 μg/m3 (65) | 65.0 | |
| Jan. 26, 2020, 11 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | N/A | 22.0 μg/m3 (20) | 14.0 μg/m3 (54) | 54.0 | |
| Jan. 26, 2020, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | 21.0 μg/m3 (19) | 13.0 μg/m3 (52) | 52.0 | |
| Jan. 26, 2020, 9 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 17.0 μg/m3 (15) | 16.0 μg/m3 (59) | 59.0 | |
| Jan. 26, 2020, 8 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | N/A | 17.0 μg/m3 (15) | 13.0 μg/m3 (52) | 52.0 | |
| Jan. 26, 2020, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | N/A | 26.0 μg/m3 (24) | 15.0 μg/m3 (56) | 56.0 | |
| Jan. 26, 2020, 6 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 2.0 ppb (2) | N/A | 32.0 μg/m3 (29) | 18.0 μg/m3 (63) | 63.0 | |
| Jan. 26, 2020, 5 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | N/A | 30.0 μg/m3 (27) | 26.0 μg/m3 (80) | 80.0 | |
| Jan. 26, 2020, 4 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 5.0 ppb (4) | N/A | 33.0 μg/m3 (30) | 22.0 μg/m3 (71) | 71.0 | |
| Jan. 26, 2020, 3 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 10.0 ppb (8) | N/A | 22.0 μg/m3 (20) | 19.0 μg/m3 (65) | 65.0 | |
| Jan. 26, 2020, 2 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 22.0 ppb (17) | N/A | 22.0 μg/m3 (20) | 14.0 μg/m3 (54) | 54.0 | |
| Jan. 26, 2020, 1 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 29.0 ppb (22) | N/A | 18.0 μg/m3 (16) | 14.0 μg/m3 (54) | 54.0 | |
| Jan. 26, 2020, midnight | N/A | N/A | N/A | N/A | N/A | N/A | 33.0 ppb (25) | N/A | 20.0 μg/m3 (18) | 10.0 μg/m3 (42) | 42.0 | |
| Jan. 25, 2020, 11 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 35.0 ppb (27) | N/A | 20.0 μg/m3 (18) | 8.0 μg/m3 (33) | 33.0 | |
| Jan. 25, 2020, 10 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 34.0 ppb (26) | N/A | 15.0 μg/m3 (14) | 5.0 μg/m3 (21) | 26.0 | |
| Jan. 25, 2020, 9 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 43.0 ppb (33) | N/A | 6.0 μg/m3 (5) | -1.0 μg/m3 (0) | 33.0 | |
| Jan. 25, 2020, 8 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 40.0 ppb (31) | N/A | 6.0 μg/m3 (5) | 0.0 μg/m3 (0) | 31.0 | |
| Jan. 25, 2020, 7 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 39.0 ppb (30) | N/A | 3.0 μg/m3 (3) | -1.0 μg/m3 (0) | 30.0 | |
| Jan. 25, 2020, 6 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 40.0 ppb (31) | N/A | 5.0 μg/m3 (5) | -2.0 μg/m3 (0) | 31.0 | |
| Jan. 25, 2020, 5 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 37.0 ppb (28) | N/A | 6.0 μg/m3 (5) | 1.0 μg/m3 (4) | 28.0 | |
| Jan. 25, 2020, 4 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 25.0 ppb (19) | N/A | 7.0 μg/m3 (6) | 3.0 μg/m3 (12) | 19.0 | |
| Jan. 25, 2020, 3 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 20.0 ppb (15) | N/A | 6.0 μg/m3 (5) | 4.0 μg/m3 (17) | 17.0 | |
| Jan. 25, 2020, 2 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 34.0 ppb (26) | N/A | -1.0 μg/m3 (0) | 1.0 μg/m3 (4) | 26.0 | |
| Jan. 25, 2020, 1 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 42.0 ppb (32) | N/A | 1.0 μg/m3 (1) | 2.0 μg/m3 (8) | 32.0 | |
| Jan. 25, 2020, noon | N/A | N/A | N/A | N/A | N/A | N/A | 43.0 ppb (33) | N/A | 2.0 μg/m3 (2) | 3.0 μg/m3 (12) | 33.0 | |
| Jan. 25, 2020, 11 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 43.0 ppb (33) | N/A | 3.0 μg/m3 (3) | 1.0 μg/m3 (4) | 33.0 | |
| Jan. 25, 2020, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 42.0 ppb (32) | N/A | 4.0 μg/m3 (4) | 2.0 μg/m3 (8) | 32.0 | |
| Jan. 25, 2020, 9 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 1.0 μg/m3 (1) | 4.0 μg/m3 (17) | 17.0 | |
| Jan. 25, 2020, 8 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 22.0 ppb (17) | N/A | 2.0 μg/m3 (2) | 3.0 μg/m3 (12) | 17.0 | |
| Jan. 25, 2020, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 33.0 ppb (25) | N/A | 5.0 μg/m3 (5) | 5.0 μg/m3 (21) | 25.0 | |
| Jan. 25, 2020, 6 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 32.0 ppb (25) | N/A | 5.0 μg/m3 (5) | 3.0 μg/m3 (12) | 25.0 | |
| Jan. 25, 2020, 5 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 32.0 ppb (25) | N/A | 3.0 μg/m3 (3) | 0.0 μg/m3 (0) | 25.0 | |
| Jan. 25, 2020, 4 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 33.0 ppb (25) | N/A | 6.0 μg/m3 (5) | 5.0 μg/m3 (21) | 25.0 | |
| Jan. 25, 2020, 3 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 7.0 ppb (5) | N/A | 25.0 μg/m3 (23) | 9.0 μg/m3 (38) | 38.0 | |
| Jan. 25, 2020, 2 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 17.0 ppb (13) | N/A | 21.0 μg/m3 (19) | 7.0 μg/m3 (29) | 29.0 | |
| Jan. 25, 2020, 1 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 25.0 ppb (19) | N/A | 26.0 μg/m3 (24) | 8.0 μg/m3 (33) | 33.0 | |
| Jan. 25, 2020, midnight | N/A | N/A | N/A | N/A | N/A | N/A | 29.0 ppb (22) | N/A | 23.0 μg/m3 (21) | 5.0 μg/m3 (21) | 22.0 | |
| Jan. 24, 2020, 11 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 33.0 ppb (25) | N/A | 13.0 μg/m3 (12) | 3.0 μg/m3 (12) | 25.0 | |
| Jan. 24, 2020, 10 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 30.0 ppb (23) | N/A | 19.0 μg/m3 (17) | 3.0 μg/m3 (12) | 23.0 | |
| Jan. 24, 2020, 9 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 34.0 ppb (26) | N/A | 8.0 μg/m3 (7) | 0.0 μg/m3 (0) | 26.0 | |
| Jan. 24, 2020, 8 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 36.0 ppb (28) | N/A | 5.0 μg/m3 (5) | -1.0 μg/m3 (0) | 28.0 | |
| Jan. 24, 2020, 7 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 34.0 ppb (26) | N/A | 7.0 μg/m3 (6) | -1.0 μg/m3 (0) | 26.0 | |
| Jan. 24, 2020, 6 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 7.0 μg/m3 (6) | 2.0 μg/m3 (8) | 8.0 | |
| Jan. 24, 2020, 5 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 20.0 ppb (15) | N/A | 9.0 μg/m3 (8) | 2.0 μg/m3 (8) | 15.0 | |
| Jan. 24, 2020, 4 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 6.0 ppb (5) | N/A | 14.0 μg/m3 (13) | 2.0 μg/m3 (8) | 13.0 | |
| Jan. 24, 2020, 3 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | N/A | 16.0 μg/m3 (15) | 2.0 μg/m3 (8) | 15.0 | |
| Jan. 24, 2020, 2 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | 4.0 μg/m3 (4) | 2.0 μg/m3 (8) | 8.0 | |
| Jan. 24, 2020, 1 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 3.0 ppb (2) | N/A | 1.0 μg/m3 (1) | -1.0 μg/m3 (0) | 2.0 | |
| Jan. 24, 2020, noon | N/A | N/A | N/A | N/A | N/A | N/A | 10.0 ppb (8) | N/A | 0.0 μg/m3 (0) | -1.0 μg/m3 (0) | 8.0 | |
| Jan. 24, 2020, 11 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 12.0 ppb (9) | N/A | 3.0 μg/m3 (3) | 1.0 μg/m3 (4) | 9.0 | |
| Jan. 24, 2020, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 13.0 ppb (10) | N/A | 5.0 μg/m3 (5) | 1.0 μg/m3 (4) | 10.0 | |
| Jan. 24, 2020, 9 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 10.0 ppb (8) | N/A | 7.0 μg/m3 (6) | 2.0 μg/m3 (8) | 8.0 | |
| Jan. 24, 2020, 8 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 10.0 ppb (8) | N/A | 8.0 μg/m3 (7) | 6.0 μg/m3 (25) | 25.0 | |
| Jan. 24, 2020, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 4.0 ppb (3) | N/A | 11.0 μg/m3 (10) | 8.0 μg/m3 (33) | 33.0 | |
| Jan. 24, 2020, 6 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 3.0 ppb (2) | N/A | 10.0 μg/m3 (9) | 7.0 μg/m3 (29) | 29.0 | |
| Jan. 24, 2020, 5 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 4.0 ppb (3) | N/A | 12.0 μg/m3 (11) | 7.0 μg/m3 (29) | 29.0 | |
| Jan. 24, 2020, 4 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 7.0 ppb (5) | N/A | 16.0 μg/m3 (15) | 11.0 μg/m3 (46) | 46.0 | |
| Jan. 24, 2020, 3 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 10.0 ppb (8) | N/A | 22.0 μg/m3 (20) | 12.0 μg/m3 (50) | 50.0 | |
| Jan. 24, 2020, 2 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 24.0 ppb (18) | N/A | 15.0 μg/m3 (14) | 5.0 μg/m3 (21) | 21.0 | |
| Jan. 24, 2020, 1 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 35.0 ppb (27) | N/A | 8.0 μg/m3 (7) | 4.0 μg/m3 (17) | 27.0 | |
| Jan. 24, 2020, midnight | N/A | N/A | N/A | N/A | N/A | N/A | 38.0 ppb (29) | N/A | 3.0 μg/m3 (3) | 1.0 μg/m3 (4) | 29.0 | |
| Jan. 23, 2020, 11 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 39.0 ppb (30) | N/A | 3.0 μg/m3 (3) | -2.0 μg/m3 (0) | 30.0 | |
| Jan. 23, 2020, 10 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 41.0 ppb (32) | N/A | 3.0 μg/m3 (3) | -1.0 μg/m3 (0) | 32.0 | |
| Jan. 23, 2020, 9 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 4.0 μg/m3 (4) | -1.0 μg/m3 (0) | 4.0 | |
| Jan. 23, 2020, 8 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 39.0 ppb (30) | N/A | 4.0 μg/m3 (4) | -3.0 μg/m3 (0) | 30.0 | |
| Jan. 23, 2020, 7 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 39.0 ppb (30) | N/A | 5.0 μg/m3 (5) | -3.0 μg/m3 (0) | 30.0 | |
| Jan. 23, 2020, 6 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 38.0 ppb (29) | N/A | 5.0 μg/m3 (5) | -4.0 μg/m3 (0) | 29.0 | |
| Jan. 23, 2020, 5 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 34.0 ppb (26) | N/A | 8.0 μg/m3 (7) | -1.0 μg/m3 (0) | 26.0 | |
| Jan. 23, 2020, 4 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 17.0 ppb (13) | N/A | 12.0 μg/m3 (11) | 4.0 μg/m3 (17) | 17.0 | |
| Jan. 23, 2020, 3 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 7.0 ppb (5) | N/A | 7.0 μg/m3 (6) | 4.0 μg/m3 (17) | 17.0 | |
| Jan. 23, 2020, 2 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 4.0 ppb (3) | N/A | 5.0 μg/m3 (5) | 3.0 μg/m3 (12) | 12.0 | |
| Jan. 23, 2020, 1 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 14.0 ppb (11) | N/A | 4.0 μg/m3 (4) | 3.0 μg/m3 (12) | 12.0 | |
| Jan. 23, 2020, noon | N/A | N/A | N/A | N/A | N/A | N/A | 17.0 ppb (13) | N/A | 4.0 μg/m3 (4) | 5.0 μg/m3 (21) | 21.0 | |
| Jan. 23, 2020, 11 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 15.0 ppb (12) | N/A | 3.0 μg/m3 (3) | 6.0 μg/m3 (25) | 25.0 | |
| Jan. 23, 2020, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 11.0 ppb (8) | N/A | 7.0 μg/m3 (6) | 6.0 μg/m3 (25) | 25.0 | |
| Jan. 23, 2020, 9 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 11.0 μg/m3 (10) | 3.0 μg/m3 (12) | 12.0 | |
| Jan. 23, 2020, 8 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 16.0 ppb (12) | N/A | 17.0 μg/m3 (15) | 3.0 μg/m3 (12) | 15.0 | |
| Jan. 23, 2020, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 16.0 ppb (12) | N/A | 9.0 μg/m3 (8) | 4.0 μg/m3 (17) | 17.0 | |
| Jan. 23, 2020, 6 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 25.0 ppb (19) | N/A | 7.0 μg/m3 (6) | 4.0 μg/m3 (17) | 19.0 | |
| Jan. 23, 2020, 5 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 32.0 ppb (25) | N/A | 9.0 μg/m3 (8) | 1.0 μg/m3 (4) | 25.0 | |
| Jan. 23, 2020, 4 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 29.0 ppb (22) | N/A | 4.0 μg/m3 (4) | 2.0 μg/m3 (8) | 22.0 | |
| Jan. 23, 2020, 3 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 35.0 ppb (27) | N/A | 5.0 μg/m3 (5) | 4.0 μg/m3 (17) | 27.0 | |
| Jan. 23, 2020, 2 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 25.0 ppb (19) | N/A | 9.0 μg/m3 (8) | 7.0 μg/m3 (29) | 29.0 | |
| Jan. 23, 2020, 1 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 30.0 ppb (23) | N/A | 15.0 μg/m3 (14) | 7.0 μg/m3 (29) | 29.0 | |
| Jan. 23, 2020, midnight | N/A | N/A | N/A | N/A | N/A | N/A | 36.0 ppb (28) | N/A | 10.0 μg/m3 (9) | 3.0 μg/m3 (12) | 28.0 | |
| Jan. 22, 2020, 11 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 39.0 ppb (30) | N/A | 8.0 μg/m3 (7) | 0.0 μg/m3 (0) | 30.0 | |
| Jan. 22, 2020, 10 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 38.0 ppb (29) | N/A | 10.0 μg/m3 (9) | 3.0 μg/m3 (12) | 29.0 | |
| Jan. 22, 2020, 9 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 37.0 ppb (28) | N/A | 7.0 μg/m3 (6) | 2.0 μg/m3 (8) | 28.0 | |
| Jan. 22, 2020, 8 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 37.0 ppb (28) | N/A | 4.0 μg/m3 (4) | 2.0 μg/m3 (8) | 28.0 | |
| Jan. 22, 2020, 7 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 34.0 ppb (26) | N/A | 6.0 μg/m3 (5) | 3.0 μg/m3 (12) | 26.0 | |
| Jan. 22, 2020, 6 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 26.0 ppb (20) | N/A | 9.0 μg/m3 (8) | 4.0 μg/m3 (17) | 20.0 | |
| Jan. 22, 2020, 5 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 26.0 ppb (20) | N/A | 9.0 μg/m3 (8) | 4.0 μg/m3 (17) | 20.0 | |
| Jan. 22, 2020, 4 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 6.0 ppb (5) | N/A | 12.0 μg/m3 (11) | 6.0 μg/m3 (25) | 25.0 | |
| Jan. 22, 2020, 3 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | N/A | 15.0 μg/m3 (14) | 6.0 μg/m3 (25) | 25.0 | |
| Jan. 22, 2020, 2 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | 5.0 μg/m3 (5) | 4.0 μg/m3 (17) | 17.0 | |
| Jan. 22, 2020, 1 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | 5.0 μg/m3 (5) | 3.0 μg/m3 (12) | 12.0 | |
| Jan. 22, 2020, noon | N/A | N/A | N/A | N/A | N/A | N/A | 1.0 ppb (1) | N/A | 5.0 μg/m3 (5) | 6.0 μg/m3 (25) | 25.0 | |
| Jan. 22, 2020, 11 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 6.0 ppb (5) | N/A | 5.0 μg/m3 (5) | 6.0 μg/m3 (25) | 25.0 | |
| Jan. 22, 2020, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 9.0 ppb (7) | N/A | 7.0 μg/m3 (6) | 4.0 μg/m3 (17) | 17.0 | |
| Jan. 22, 2020, 9 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 5.0 μg/m3 (5) | 5.0 μg/m3 (21) | 21.0 | |
| Jan. 22, 2020, 8 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 28.0 ppb (22) | N/A | 7.0 μg/m3 (6) | 3.0 μg/m3 (12) | 22.0 | |
| Jan. 22, 2020, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 27.0 ppb (21) | N/A | 10.0 μg/m3 (9) | 3.0 μg/m3 (12) | 21.0 | |
| Jan. 22, 2020, 6 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 27.0 ppb (21) | N/A | 8.0 μg/m3 (7) | 2.0 μg/m3 (8) | 21.0 | |
| Jan. 22, 2020, 5 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 23.0 ppb (18) | N/A | 10.0 μg/m3 (9) | 3.0 μg/m3 (12) | 18.0 | |
| Jan. 22, 2020, 4 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 29.0 ppb (22) | N/A | 12.0 μg/m3 (11) | 3.0 μg/m3 (12) | 22.0 | |
| Jan. 22, 2020, 3 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 33.0 ppb (25) | N/A | 9.0 μg/m3 (8) | 3.0 μg/m3 (12) | 25.0 | |
| Jan. 22, 2020, 2 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 35.0 ppb (27) | N/A | 7.0 μg/m3 (6) | 4.0 μg/m3 (17) | 27.0 | |
| Jan. 22, 2020, 1 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 38.0 ppb (29) | N/A | 4.0 μg/m3 (4) | 5.0 μg/m3 (21) | 29.0 | |
| Jan. 22, 2020, midnight | N/A | N/A | N/A | N/A | N/A | N/A | 41.0 ppb (32) | N/A | 7.0 μg/m3 (6) | 7.0 μg/m3 (29) | 32.0 | |
| Jan. 21, 2020, 11 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 42.0 ppb (32) | N/A | 8.0 μg/m3 (7) | 2.0 μg/m3 (8) | 32.0 | |
| Jan. 21, 2020, 10 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 7.0 μg/m3 (6) | 3.0 μg/m3 (12) | 12.0 | |
| Jan. 21, 2020, 9 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. 21, 2020, 7 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 4.0 ppb (3) | N/A | N/A | N/A | 3.0 | |
| Jan. 21, 2020, 6 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 0.0 ppb (0) | N/A | N/A | N/A | N/A | |
| Jan. 21, 2020, 4 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 39.0 μg/m3 (35) | 16.0 μg/m3 (59) | 59.0 | |
| Jan. 21, 2020, 3 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 9.0 μg/m3 (8) | 6.0 μg/m3 (25) | 25.0 | |
| Jan. 21, 2020, 2 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 10.0 μg/m3 (9) | 5.0 μg/m3 (21) | 21.0 | |
| Jan. 21, 2020, 1 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 10.0 μg/m3 (9) | 2.0 μg/m3 (8) | 9.0 | |
| Jan. 21, 2020, noon | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 6.0 μg/m3 (5) | 3.0 μg/m3 (12) | 12.0 | |
| Jan. 21, 2020, 11 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 8.0 μg/m3 (7) | 3.0 μg/m3 (12) | 12.0 | |
| Jan. 21, 2020, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 8.0 μg/m3 (7) | 4.0 μg/m3 (17) | 17.0 | |
| Jan. 21, 2020, 9 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 6.0 μg/m3 (5) | 5.0 μg/m3 (21) | 21.0 | |
| Jan. 21, 2020, 8 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 7.0 μg/m3 (6) | 6.0 μg/m3 (25) | 25.0 | |
| Jan. 21, 2020, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 10.0 μg/m3 (9) | 7.0 μg/m3 (29) | 29.0 | |
| Jan. 21, 2020, 6 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 15.0 μg/m3 (14) | 7.0 μg/m3 (29) | 29.0 | |
| Jan. 21, 2020, 5 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 12.0 μg/m3 (11) | 6.0 μg/m3 (25) | 25.0 | |
| Jan. 21, 2020, 4 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 12.0 μg/m3 (11) | 5.0 μg/m3 (21) | 21.0 | |
| Jan. 21, 2020, 3 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 11.0 μg/m3 (10) | 6.0 μg/m3 (25) | 25.0 | |
| Jan. 21, 2020, 2 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 10.0 μg/m3 (9) | 6.0 μg/m3 (25) | 25.0 | |
| Jan. 21, 2020, 1 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 13.0 μg/m3 (12) | 6.0 μg/m3 (25) | 25.0 | |
| Jan. 21, 2020, midnight | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 17.0 μg/m3 (15) | 10.0 μg/m3 (42) | 42.0 | |
| Jan. 20, 2020, 11 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 24.0 μg/m3 (22) | 10.0 μg/m3 (42) | 42.0 | |
| Jan. 20, 2020, 10 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 14.0 μg/m3 (13) | 8.0 μg/m3 (33) | 33.0 | |
| Jan. 20, 2020, 9 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 17.0 μg/m3 (15) | 9.0 μg/m3 (38) | 38.0 | |
| Jan. 20, 2020, 8 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 14.0 μg/m3 (13) | 12.0 μg/m3 (50) | 50.0 | |
| Jan. 20, 2020, 7 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 17.0 μg/m3 (15) | 8.0 μg/m3 (33) | 33.0 | |
| Jan. 20, 2020, 6 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 19.0 μg/m3 (17) | 7.0 μg/m3 (29) | 29.0 | |
| Jan. 20, 2020, 5 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 13.0 μg/m3 (12) | 5.0 μg/m3 (21) | 21.0 | |
| Jan. 20, 2020, 4 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 17.0 μg/m3 (15) | 7.0 μg/m3 (29) | 29.0 | |
| Jan. 20, 2020, 3 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 18.0 μg/m3 (16) | 5.0 μg/m3 (21) | 21.0 | |
| Jan. 20, 2020, 2 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 7.0 μg/m3 (6) | 5.0 μg/m3 (21) | 21.0 | |
| Jan. 20, 2020, 1 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 7.0 μg/m3 (6) | 6.0 μg/m3 (25) | 25.0 |