Yuma AZ, US: 32.690277, -114.614441
| Date Observed (UTC) | NOX | NO | NOY | NO2 | NO2Y | SO2 | OZONE | CO | PM10 | PM2.5 | AQI | AQI/500 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| May 21, 2019, noon | N/A | N/A | N/A | N/A | N/A | N/A | 43.0 ppb (33) | N/A | 13.0 μg/m3 (12) | 7.0 μg/m3 (29) | 33.0 | |
| May 21, 2019, 11 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 45.0 ppb (35) | N/A | 9.0 μg/m3 (8) | 6.0 μg/m3 (25) | 35.0 | |
| May 21, 2019, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 44.0 ppb (34) | N/A | 11.0 μg/m3 (10) | 6.0 μg/m3 (25) | 34.0 | |
| May 21, 2019, 9 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 45.0 ppb (35) | N/A | 12.0 μg/m3 (11) | 8.0 μg/m3 (33) | 35.0 | |
| May 21, 2019, 8 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 41.0 ppb (32) | N/A | 22.0 μg/m3 (20) | 6.0 μg/m3 (25) | 32.0 | |
| May 21, 2019, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 46.0 ppb (35) | N/A | 13.0 μg/m3 (12) | 5.0 μg/m3 (21) | 35.0 | |
| May 21, 2019, 6 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 47.0 ppb (36) | N/A | 17.0 μg/m3 (15) | 7.0 μg/m3 (29) | 36.0 | |
| May 21, 2019, 5 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 47.0 ppb (36) | N/A | 20.0 μg/m3 (18) | 9.0 μg/m3 (38) | 38.0 | |
| May 21, 2019, 4 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 49.0 ppb (38) | N/A | 20.0 μg/m3 (18) | 6.0 μg/m3 (25) | 38.0 | |
| May 21, 2019, 3 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 52.0 ppb (40) | N/A | 29.0 μg/m3 (26) | 7.0 μg/m3 (29) | 40.0 | |
| May 21, 2019, 2 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 53.0 ppb (41) | N/A | 28.0 μg/m3 (25) | 10.0 μg/m3 (42) | 42.0 | |
| May 21, 2019, 1 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 55.0 ppb (42) | N/A | 33.0 μg/m3 (30) | 6.0 μg/m3 (25) | 42.0 | |
| May 21, 2019, midnight | N/A | N/A | N/A | N/A | N/A | N/A | 54.0 ppb (42) | N/A | 44.0 μg/m3 (40) | 7.0 μg/m3 (29) | 42.0 | |
| May 20, 2019, 11 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 52.0 ppb (40) | N/A | 83.0 μg/m3 (64) | 8.0 μg/m3 (33) | 64.0 | |
| May 20, 2019, 10 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 53.0 ppb (41) | N/A | 72.0 μg/m3 (58) | 6.0 μg/m3 (25) | 58.0 | |
| May 20, 2019, 9 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 53.0 ppb (41) | N/A | 34.0 μg/m3 (31) | 3.0 μg/m3 (12) | 41.0 | |
| May 20, 2019, 8 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 52.0 ppb (40) | N/A | 25.0 μg/m3 (23) | 5.0 μg/m3 (21) | 40.0 | |
| May 20, 2019, 7 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 52.0 ppb (40) | N/A | 53.0 μg/m3 (48) | 6.0 μg/m3 (25) | 48.0 | |
| May 20, 2019, 6 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 51.0 ppb (39) | N/A | 31.0 μg/m3 (28) | 6.0 μg/m3 (25) | 39.0 | |
| May 20, 2019, 5 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 51.0 ppb (39) | N/A | 20.0 μg/m3 (18) | 6.0 μg/m3 (25) | 39.0 | |
| May 20, 2019, 4 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 50.0 ppb (38) | N/A | 16.0 μg/m3 (15) | 4.0 μg/m3 (17) | 38.0 | |
| May 20, 2019, 3 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 47.0 ppb (36) | N/A | 31.0 μg/m3 (28) | 5.0 μg/m3 (21) | 36.0 | |
| May 20, 2019, 2 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 48.0 ppb (37) | N/A | 23.0 μg/m3 (21) | 7.0 μg/m3 (29) | 37.0 | |
| May 20, 2019, 1 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 48.0 ppb (37) | N/A | 38.0 μg/m3 (35) | 6.0 μg/m3 (25) | 37.0 | |
| May 20, 2019, noon | N/A | N/A | N/A | N/A | N/A | N/A | 48.0 ppb (37) | N/A | 18.0 μg/m3 (16) | 4.0 μg/m3 (17) | 37.0 | |
| May 20, 2019, 11 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 45.0 ppb (35) | N/A | 16.0 μg/m3 (15) | 5.0 μg/m3 (21) | 35.0 | |
| May 20, 2019, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 44.0 ppb (34) | N/A | 18.0 μg/m3 (16) | 8.0 μg/m3 (33) | 34.0 | |
| May 20, 2019, 9 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 47.0 ppb (36) | N/A | 38.0 μg/m3 (35) | 10.0 μg/m3 (42) | 42.0 | |
| May 20, 2019, 8 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 48.0 ppb (37) | N/A | 35.0 μg/m3 (32) | 9.0 μg/m3 (38) | 38.0 | |
| May 20, 2019, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 49.0 ppb (38) | N/A | 74.0 μg/m3 (60) | 21.0 μg/m3 (69) | 69.0 | |
| May 20, 2019, 6 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 50.0 ppb (38) | N/A | 134.0 μg/m3 (90) | 22.0 μg/m3 (71) | 90.0 | |
| May 20, 2019, 5 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 50.0 ppb (38) | N/A | 80.0 μg/m3 (62) | 13.0 μg/m3 (52) | 62.0 | |
| May 20, 2019, 4 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 50.0 ppb (38) | N/A | 44.0 μg/m3 (40) | 14.0 μg/m3 (54) | 54.0 | |
| May 20, 2019, 3 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 51.0 ppb (39) | N/A | 56.0 μg/m3 (50) | 8.0 μg/m3 (33) | 50.0 | |
| May 20, 2019, 2 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 48.0 ppb (37) | N/A | 178.0 μg/m3 (112) | 25.0 μg/m3 (78) | 112.0 | |
| May 20, 2019, 1 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 42.0 ppb (32) | N/A | 185.0 μg/m3 (115) | 24.0 μg/m3 (76) | 115.0 | |
| May 20, 2019, midnight | N/A | N/A | N/A | N/A | N/A | N/A | 39.0 ppb (30) | N/A | 139.0 μg/m3 (92) | 22.0 μg/m3 (71) | 92.0 | |
| May 19, 2019, 11 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 40.0 ppb (31) | N/A | 205.0 μg/m3 (125) | 20.0 μg/m3 (67) | 125.0 | |
| May 19, 2019, 10 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 40.0 ppb (31) | N/A | 57.0 μg/m3 (51) | 5.0 μg/m3 (21) | 51.0 | |
| May 19, 2019, 9 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 45.0 ppb (35) | N/A | 56.0 μg/m3 (50) | 6.0 μg/m3 (25) | 50.0 | |
| May 19, 2019, 8 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 48.0 ppb (37) | N/A | 25.0 μg/m3 (23) | 9.0 μg/m3 (38) | 38.0 | |
| May 19, 2019, 7 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 46.0 ppb (35) | N/A | 38.0 μg/m3 (35) | 9.0 μg/m3 (38) | 38.0 | |
| May 19, 2019, 6 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 47.0 ppb (36) | N/A | 46.0 μg/m3 (42) | 5.0 μg/m3 (21) | 42.0 | |
| May 19, 2019, 5 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 48.0 ppb (37) | N/A | 31.0 μg/m3 (28) | 6.0 μg/m3 (25) | 37.0 | |
| May 19, 2019, 4 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 46.0 ppb (35) | N/A | 29.0 μg/m3 (26) | 8.0 μg/m3 (33) | 35.0 | |
| May 19, 2019, 3 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 42.0 ppb (32) | N/A | 42.0 μg/m3 (38) | 10.0 μg/m3 (42) | 42.0 | |
| May 19, 2019, 2 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 45.0 ppb (35) | N/A | 91.0 μg/m3 (68) | 10.0 μg/m3 (42) | 68.0 | |
| May 19, 2019, 1 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 47.0 ppb (36) | N/A | 41.0 μg/m3 (37) | 11.0 μg/m3 (46) | 46.0 | |
| May 19, 2019, noon | N/A | N/A | N/A | N/A | N/A | N/A | 45.0 ppb (35) | N/A | 20.0 μg/m3 (18) | 6.0 μg/m3 (25) | 35.0 | |
| May 19, 2019, 11 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 46.0 ppb (35) | N/A | 20.0 μg/m3 (18) | 7.0 μg/m3 (29) | 35.0 | |
| May 19, 2019, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 49.0 ppb (38) | N/A | 30.0 μg/m3 (27) | 7.0 μg/m3 (29) | 38.0 | |
| May 19, 2019, 9 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 50.0 ppb (38) | N/A | 31.0 μg/m3 (28) | 12.0 μg/m3 (50) | 50.0 | |
| May 19, 2019, 8 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 52.0 ppb (40) | N/A | 19.0 μg/m3 (17) | 7.0 μg/m3 (29) | 40.0 | |
| May 19, 2019, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 51.0 ppb (39) | N/A | 22.0 μg/m3 (20) | 14.0 μg/m3 (54) | 54.0 | |
| May 19, 2019, 6 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 50.0 ppb (38) | N/A | 31.0 μg/m3 (28) | 9.0 μg/m3 (38) | 38.0 | |
| May 19, 2019, 5 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 48.0 ppb (37) | N/A | 39.0 μg/m3 (35) | 6.0 μg/m3 (25) | 37.0 | |
| May 19, 2019, 4 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 57.0 ppb (44) | N/A | 23.0 μg/m3 (21) | 7.0 μg/m3 (29) | 44.0 | |
| May 19, 2019, 3 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 28.0 μg/m3 (25) | 6.0 μg/m3 (25) | 25.0 | |
| May 19, 2019, 2 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 24.0 μg/m3 (22) | 6.0 μg/m3 (25) | 25.0 | |
| May 18, 2019, 9 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 63.0 ppb (48) | N/A | N/A | N/A | 48.0 | |
| May 18, 2019, 8 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 60.0 ppb (46) | N/A | 19.0 μg/m3 (17) | 6.0 μg/m3 (25) | 46.0 | |
| May 18, 2019, 7 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 58.0 ppb (45) | N/A | 13.0 μg/m3 (12) | 5.0 μg/m3 (21) | 45.0 | |
| May 18, 2019, 6 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 57.0 ppb (44) | N/A | 14.0 μg/m3 (13) | 6.0 μg/m3 (25) | 44.0 | |
| May 18, 2019, 5 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 57.0 ppb (44) | N/A | 111.0 μg/m3 (78) | 9.0 μg/m3 (38) | 78.0 | |
| May 18, 2019, 4 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 52.0 ppb (40) | N/A | 23.0 μg/m3 (21) | 9.0 μg/m3 (38) | 40.0 | |
| May 18, 2019, 3 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 44.0 ppb (34) | N/A | 34.0 μg/m3 (31) | 10.0 μg/m3 (42) | 42.0 | |
| May 18, 2019, 2 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 40.0 ppb (31) | N/A | 51.0 μg/m3 (46) | 10.0 μg/m3 (42) | 46.0 | |
| May 18, 2019, 1 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 32.0 ppb (25) | N/A | 36.0 μg/m3 (33) | 9.0 μg/m3 (38) | 38.0 | |
| May 18, 2019, noon | N/A | N/A | N/A | N/A | N/A | N/A | 38.0 ppb (29) | N/A | 27.0 μg/m3 (25) | 10.0 μg/m3 (42) | 42.0 | |
| May 18, 2019, 11 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 39.0 ppb (30) | N/A | 25.0 μg/m3 (23) | 8.0 μg/m3 (33) | 33.0 | |
| May 18, 2019, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 43.0 ppb (33) | N/A | 25.0 μg/m3 (23) | 13.0 μg/m3 (52) | 52.0 | |
| May 18, 2019, 9 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 44.0 ppb (34) | N/A | 20.0 μg/m3 (18) | 9.0 μg/m3 (38) | 38.0 | |
| May 18, 2019, 8 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 45.0 ppb (35) | N/A | 20.0 μg/m3 (18) | 6.0 μg/m3 (25) | 35.0 | |
| May 18, 2019, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 46.0 ppb (35) | N/A | 16.0 μg/m3 (15) | 7.0 μg/m3 (29) | 35.0 | |
| May 18, 2019, 6 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 44.0 ppb (34) | N/A | 31.0 μg/m3 (28) | 8.0 μg/m3 (33) | 34.0 | |
| May 18, 2019, 5 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 45.0 ppb (35) | N/A | 31.0 μg/m3 (28) | 12.0 μg/m3 (50) | 50.0 | |
| May 18, 2019, 4 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 49.0 ppb (38) | N/A | 38.0 μg/m3 (35) | 14.0 μg/m3 (54) | 54.0 | |
| May 18, 2019, 3 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 52.0 ppb (40) | N/A | 40.0 μg/m3 (36) | 10.0 μg/m3 (42) | 42.0 | |
| May 18, 2019, 2 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 55.0 ppb (42) | N/A | 48.0 μg/m3 (44) | 9.0 μg/m3 (38) | 44.0 | |
| May 18, 2019, 1 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 58.0 ppb (45) | N/A | 56.0 μg/m3 (50) | 5.0 μg/m3 (21) | 50.0 | |
| May 18, 2019, midnight | N/A | N/A | N/A | N/A | N/A | N/A | 60.0 ppb (46) | N/A | 27.0 μg/m3 (25) | 5.0 μg/m3 (21) | 46.0 | |
| May 17, 2019, 11 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 60.0 ppb (46) | N/A | 23.0 μg/m3 (21) | 5.0 μg/m3 (21) | 46.0 | |
| May 17, 2019, 10 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 58.0 ppb (45) | N/A | 28.0 μg/m3 (25) | 4.0 μg/m3 (17) | 45.0 | |
| May 17, 2019, 9 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 56.0 ppb (43) | N/A | 19.0 μg/m3 (17) | 2.0 μg/m3 (8) | 43.0 | |
| May 17, 2019, 8 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 54.0 ppb (42) | N/A | 23.0 μg/m3 (21) | 3.0 μg/m3 (12) | 42.0 | |
| May 17, 2019, 7 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 51.0 ppb (39) | N/A | 33.0 μg/m3 (30) | 6.0 μg/m3 (25) | 39.0 | |
| May 17, 2019, 6 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 49.0 ppb (38) | N/A | 14.0 μg/m3 (13) | 5.0 μg/m3 (21) | 38.0 | |
| May 17, 2019, 5 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 49.0 ppb (38) | N/A | 24.0 μg/m3 (22) | 4.0 μg/m3 (17) | 38.0 | |
| May 17, 2019, 4 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 45.0 ppb (35) | N/A | 36.0 μg/m3 (33) | 7.0 μg/m3 (29) | 35.0 | |
| May 17, 2019, 3 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 42.0 ppb (32) | N/A | 31.0 μg/m3 (28) | 6.0 μg/m3 (25) | 32.0 | |
| May 17, 2019, 2 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 43.0 ppb (33) | N/A | 24.0 μg/m3 (22) | 7.0 μg/m3 (29) | 33.0 | |
| May 17, 2019, 1 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 43.0 ppb (33) | N/A | 25.0 μg/m3 (23) | 8.0 μg/m3 (33) | 33.0 | |
| May 17, 2019, noon | N/A | N/A | N/A | N/A | N/A | N/A | 44.0 ppb (34) | N/A | 41.0 μg/m3 (37) | 8.0 μg/m3 (33) | 37.0 | |
| May 17, 2019, 11 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 45.0 ppb (35) | N/A | 73.0 μg/m3 (59) | 12.0 μg/m3 (50) | 59.0 | |
| May 17, 2019, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 47.0 ppb (36) | N/A | 67.0 μg/m3 (56) | 4.0 μg/m3 (17) | 56.0 | |
| May 17, 2019, 9 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 47.0 ppb (36) | N/A | 30.0 μg/m3 (27) | 5.0 μg/m3 (21) | 36.0 | |
| May 17, 2019, 8 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 47.0 ppb (36) | N/A | 31.0 μg/m3 (28) | 8.0 μg/m3 (33) | 36.0 | |
| May 17, 2019, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 48.0 ppb (37) | N/A | 57.0 μg/m3 (51) | 16.0 μg/m3 (59) | 59.0 | |
| May 17, 2019, 6 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 48.0 ppb (37) | N/A | 83.0 μg/m3 (64) | 20.0 μg/m3 (67) | 67.0 | |
| May 17, 2019, 5 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 49.0 ppb (38) | N/A | 134.0 μg/m3 (90) | 32.0 μg/m3 (93) | 93.0 | |
| May 17, 2019, 4 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 52.0 ppb (40) | N/A | 296.0 μg/m3 (170) | 47.0 μg/m3 (129) | 170.0 | |
| May 17, 2019, 3 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 54.0 ppb (42) | N/A | 372.0 μg/m3 (224) | 61.0 μg/m3 (153) | 224.0 | |
| May 17, 2019, 2 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 450.0 μg/m3 (331) | 67.0 μg/m3 (156) | 331.0 | |
| May 17, 2019, 1 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 47.0 ppb (36) | N/A | 348.0 μg/m3 (196) | 43.0 μg/m3 (119) | 196.0 | |
| May 17, 2019, midnight | N/A | N/A | N/A | N/A | N/A | N/A | 36.0 ppb (28) | N/A | 255.0 μg/m3 (150) | 26.0 μg/m3 (80) | 150.0 | |
| May 16, 2019, 11 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 32.0 ppb (25) | N/A | 312.0 μg/m3 (178) | 31.0 μg/m3 (90) | 178.0 | |
| May 16, 2019, 10 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 32.0 ppb (25) | N/A | 163.0 μg/m3 (104) | 20.0 μg/m3 (67) | 104.0 | |
| May 16, 2019, 9 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 31.0 ppb (24) | N/A | 191.0 μg/m3 (118) | 20.0 μg/m3 (67) | 118.0 | |
| May 16, 2019, 8 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 31.0 ppb (24) | N/A | 167.0 μg/m3 (106) | 9.0 μg/m3 (38) | 106.0 | |
| May 16, 2019, 7 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 29.0 ppb (22) | N/A | 92.0 μg/m3 (68) | 9.0 μg/m3 (38) | 68.0 | |
| May 16, 2019, 6 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 31.0 ppb (24) | N/A | 141.0 μg/m3 (93) | 13.0 μg/m3 (52) | 93.0 | |
| May 16, 2019, 5 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 32.0 ppb (25) | N/A | 116.0 μg/m3 (80) | 12.0 μg/m3 (50) | 80.0 | |
| May 16, 2019, 4 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 36.0 ppb (28) | N/A | 124.0 μg/m3 (84) | 13.0 μg/m3 (52) | 84.0 | |
| May 16, 2019, 3 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 38.0 ppb (29) | N/A | 122.0 μg/m3 (84) | 8.0 μg/m3 (33) | 84.0 | |
| May 16, 2019, 2 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 40.0 ppb (31) | N/A | 55.0 μg/m3 (50) | 4.0 μg/m3 (17) | 50.0 | |
| May 16, 2019, 1 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 39.0 ppb (30) | N/A | 25.0 μg/m3 (23) | 5.0 μg/m3 (21) | 30.0 | |
| May 16, 2019, noon | N/A | N/A | N/A | N/A | N/A | N/A | 40.0 ppb (31) | N/A | 29.0 μg/m3 (26) | 6.0 μg/m3 (25) | 31.0 | |
| May 16, 2019, 11 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 43.0 ppb (33) | N/A | 25.0 μg/m3 (23) | 7.0 μg/m3 (29) | 33.0 | |
| May 16, 2019, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 45.0 ppb (35) | N/A | 53.0 μg/m3 (48) | 6.0 μg/m3 (25) | 48.0 | |
| May 16, 2019, 9 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 46.0 ppb (35) | N/A | 39.0 μg/m3 (35) | 9.0 μg/m3 (38) | 38.0 | |
| May 16, 2019, 8 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 48.0 ppb (37) | N/A | 34.0 μg/m3 (31) | 8.0 μg/m3 (33) | 37.0 | |
| May 16, 2019, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 48.0 ppb (37) | N/A | 28.0 μg/m3 (25) | 7.0 μg/m3 (29) | 37.0 | |
| May 16, 2019, 6 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 47.0 ppb (36) | N/A | 66.0 μg/m3 (56) | 8.0 μg/m3 (33) | 56.0 | |
| May 16, 2019, 5 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 45.0 ppb (35) | N/A | 34.0 μg/m3 (31) | 8.0 μg/m3 (33) | 35.0 | |
| May 16, 2019, 4 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 43.0 ppb (33) | N/A | 77.0 μg/m3 (61) | 15.0 μg/m3 (56) | 61.0 | |
| May 16, 2019, 3 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 46.0 ppb (35) | N/A | 86.0 μg/m3 (66) | 19.0 μg/m3 (65) | 66.0 | |
| May 16, 2019, 2 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 45.0 ppb (35) | N/A | 33.0 μg/m3 (30) | 5.0 μg/m3 (21) | 35.0 | |
| May 16, 2019, 1 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 51.0 ppb (39) | N/A | 59.0 μg/m3 (52) | 6.0 μg/m3 (25) | 52.0 | |
| May 16, 2019, midnight | N/A | N/A | N/A | N/A | N/A | N/A | 54.0 ppb (42) | N/A | 19.0 μg/m3 (17) | 6.0 μg/m3 (25) | 42.0 | |
| May 15, 2019, 11 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 52.0 ppb (40) | N/A | 17.0 μg/m3 (15) | 4.0 μg/m3 (17) | 40.0 | |
| May 15, 2019, 10 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 51.0 ppb (39) | N/A | 17.0 μg/m3 (15) | 4.0 μg/m3 (17) | 39.0 | |
| May 15, 2019, 9 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 51.0 ppb (39) | N/A | 25.0 μg/m3 (23) | 4.0 μg/m3 (17) | 39.0 | |
| May 15, 2019, 8 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 55.0 ppb (42) | N/A | 25.0 μg/m3 (23) | 5.0 μg/m3 (21) | 42.0 | |
| May 15, 2019, 7 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 58.0 ppb (45) | N/A | 19.0 μg/m3 (17) | 6.0 μg/m3 (25) | 45.0 | |
| May 15, 2019, 6 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 60.0 ppb (46) | N/A | 23.0 μg/m3 (21) | 6.0 μg/m3 (25) | 46.0 | |
| May 15, 2019, 5 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 56.0 ppb (43) | N/A | 63.0 μg/m3 (54) | 5.0 μg/m3 (21) | 54.0 | |
| May 15, 2019, 4 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 45.0 ppb (35) | N/A | 29.0 μg/m3 (26) | 7.0 μg/m3 (29) | 35.0 | |
| May 15, 2019, 3 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 40.0 ppb (31) | N/A | 27.0 μg/m3 (25) | 8.0 μg/m3 (33) | 33.0 | |
| May 15, 2019, 2 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 34.0 ppb (26) | N/A | 40.0 μg/m3 (36) | 11.0 μg/m3 (46) | 46.0 | |
| May 15, 2019, 1 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 31.0 ppb (24) | N/A | 24.0 μg/m3 (22) | 6.0 μg/m3 (25) | 25.0 | |
| May 15, 2019, noon | N/A | N/A | N/A | N/A | N/A | N/A | 34.0 ppb (26) | N/A | 17.0 μg/m3 (15) | 6.0 μg/m3 (25) | 26.0 | |
| May 15, 2019, 11 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 33.0 ppb (25) | N/A | 14.0 μg/m3 (13) | 4.0 μg/m3 (17) | 25.0 | |
| May 15, 2019, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 36.0 ppb (28) | N/A | 14.0 μg/m3 (13) | 4.0 μg/m3 (17) | 28.0 | |
| May 15, 2019, 9 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 39.0 ppb (30) | N/A | 14.0 μg/m3 (13) | 4.0 μg/m3 (17) | 30.0 | |
| May 15, 2019, 8 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 34.0 ppb (26) | N/A | 18.0 μg/m3 (16) | 6.0 μg/m3 (25) | 26.0 | |
| May 15, 2019, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 25.0 ppb (19) | N/A | 41.0 μg/m3 (37) | 10.0 μg/m3 (42) | 42.0 | |
| May 15, 2019, 6 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 23.0 ppb (18) | N/A | 55.0 μg/m3 (50) | 11.0 μg/m3 (46) | 50.0 | |
| May 15, 2019, 5 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 31.0 ppb (24) | N/A | 30.0 μg/m3 (27) | 9.0 μg/m3 (38) | 38.0 | |
| May 15, 2019, 4 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 34.0 ppb (26) | N/A | 28.0 μg/m3 (25) | 7.0 μg/m3 (29) | 29.0 | |
| May 15, 2019, 3 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 38.0 ppb (29) | N/A | 38.0 μg/m3 (35) | 9.0 μg/m3 (38) | 38.0 | |
| May 15, 2019, 2 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 44.0 ppb (34) | N/A | 25.0 μg/m3 (23) | 10.0 μg/m3 (42) | 42.0 | |
| May 15, 2019, 1 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 53.0 ppb (41) | N/A | 16.0 μg/m3 (15) | 6.0 μg/m3 (25) | 41.0 | |
| May 15, 2019, midnight | N/A | N/A | N/A | N/A | N/A | N/A | 56.0 ppb (43) | N/A | 18.0 μg/m3 (16) | 7.0 μg/m3 (29) | 43.0 | |
| May 14, 2019, 11 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 62.0 ppb (48) | N/A | 29.0 μg/m3 (26) | 8.0 μg/m3 (33) | 48.0 | |
| May 14, 2019, 10 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 64.0 ppb (49) | N/A | 63.0 μg/m3 (54) | 7.0 μg/m3 (29) | 54.0 | |
| May 14, 2019, 9 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 60.0 ppb (46) | N/A | 14.0 μg/m3 (13) | 4.0 μg/m3 (17) | 46.0 | |
| May 14, 2019, 8 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 63.0 ppb (48) | N/A | 22.0 μg/m3 (20) | 6.0 μg/m3 (25) | 48.0 | |
| May 14, 2019, 7 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 61.0 ppb (47) | N/A | 27.0 μg/m3 (25) | 6.0 μg/m3 (25) | 47.0 | |
| May 14, 2019, 6 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 59.0 ppb (45) | N/A | 24.0 μg/m3 (22) | 7.0 μg/m3 (29) | 45.0 | |
| May 14, 2019, 5 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 53.0 ppb (41) | N/A | 24.0 μg/m3 (22) | 5.0 μg/m3 (21) | 41.0 | |
| May 14, 2019, 4 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 43.0 ppb (33) | N/A | 20.0 μg/m3 (18) | 3.0 μg/m3 (12) | 33.0 | |
| May 14, 2019, 3 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) | 4.0 μg/m3 (17) | 27.0 | |
| May 14, 2019, 2 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 30.0 ppb (23) | N/A | 35.0 μg/m3 (32) | 5.0 μg/m3 (21) | 32.0 | |
| May 14, 2019, 1 p.m. | N/A | N/A | N/A | N/A | N/A | N/A | 18.0 ppb (14) | N/A | 45.0 μg/m3 (41) | 8.0 μg/m3 (33) | 41.0 | |
| May 14, 2019, noon | N/A | N/A | N/A | N/A | N/A | N/A | 22.0 ppb (17) | N/A | 58.0 μg/m3 (52) | 8.0 μg/m3 (33) | 52.0 | |
| May 14, 2019, 11 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 26.0 ppb (20) | N/A | 12.0 μg/m3 (11) | 9.0 μg/m3 (38) | 38.0 | |
| May 14, 2019, 10 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 29.0 ppb (22) | N/A | 14.0 μg/m3 (13) | 5.0 μg/m3 (21) | 22.0 | |
| May 14, 2019, 9 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | 27.0 ppb (21) | N/A | 12.0 μg/m3 (11) | 3.0 μg/m3 (12) | 21.0 |