Providence RI, US: 41.829495, -71.417457
| Date Observed (UTC) | NOX | NO | NOY | NO2 | NO2Y | SO2 | OZONE | CO | PM10 | PM2.5 | AQI | AQI/500 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| May 19, 2019, 8 p.m. | 28240.0 ppb (7064) | 11.6 ppb (11) | N/A | 17.0 ppb (16) | N/A | N/A | N/A | 0.48 ppb (5) | N/A | 7.9 μg/m3 (33) | 33.0 | |
| May 19, 2019, 7 p.m. | 28490.0 ppb (7127) | 14.9 ppb (14) | N/A | 14.0 ppb (13) | N/A | N/A | N/A | 0.55 ppb (6) | N/A | 3.0 μg/m3 (12) | 14.0 | |
| May 19, 2019, 6 p.m. | 28080.0 ppb (7024) | 17.7 ppb (16) | N/A | 10.0 ppb (9) | N/A | N/A | N/A | 0.52 ppb (6) | N/A | 4.0 μg/m3 (17) | 17.0 | |
| May 19, 2019, 5 p.m. | 13440.0 ppb (3355) | 7.2 ppb (7) | N/A | 6.0 ppb (6) | N/A | N/A | N/A | 0.38 ppb (4) | N/A | 6.0 μg/m3 (25) | 25.0 | |
| May 19, 2019, 4 p.m. | 15740.0 ppb (3931) | 8.6 ppb (8) | N/A | 7.0 ppb (6) | N/A | N/A | N/A | 0.32 ppb (4) | N/A | 6.0 μg/m3 (25) | 25.0 | |
| May 19, 2019, 3 p.m. | 21480.0 ppb (5370) | 11.0 ppb (10) | N/A | 10.0 ppb (9) | N/A | N/A | N/A | 0.42 ppb (5) | N/A | 7.9 μg/m3 (33) | 33.0 | |
| May 19, 2019, 2 p.m. | 21200.0 ppb (5300) | 9.8 ppb (9) | N/A | 11.0 ppb (10) | N/A | N/A | N/A | 0.38 ppb (4) | N/A | 6.0 μg/m3 (25) | 25.0 | |
| May 19, 2019, 1 p.m. | 20950.0 ppb (5237) | 13.1 ppb (12) | N/A | 8.0 ppb (7) | N/A | N/A | N/A | 0.36 ppb (4) | N/A | 5.9 μg/m3 (25) | 25.0 | |
| May 19, 2019, noon | 23800.0 ppb (5951) | 12.8 ppb (12) | N/A | 11.0 ppb (10) | N/A | N/A | N/A | 0.35 ppb (4) | N/A | 4.0 μg/m3 (17) | 17.0 | |
| May 19, 2019, 11 a.m. | 20340.0 ppb (5084) | 11.9 ppb (11) | N/A | 8.0 ppb (7) | N/A | N/A | N/A | 0.32 ppb (4) | N/A | 6.0 μg/m3 (25) | 25.0 | |
| May 19, 2019, 10 a.m. | 22620.0 ppb (5656) | 10.7 ppb (10) | N/A | 12.0 ppb (11) | N/A | N/A | N/A | 0.33 ppb (4) | N/A | 5.9 μg/m3 (25) | 25.0 | |
| May 19, 2019, 9 a.m. | 13000.0 ppb (3245) | 6.2 ppb (6) | N/A | 7.0 ppb (6) | N/A | N/A | N/A | 0.25 ppb (3) | N/A | 4.0 μg/m3 (17) | 17.0 | |
| May 19, 2019, 8 a.m. | 12240.0 ppb (3054) | 5.3 ppb (5) | N/A | 7.0 ppb (6) | N/A | N/A | N/A | 0.28 ppb (3) | N/A | 5.0 μg/m3 (21) | 21.0 | |
| May 19, 2019, 7 a.m. | 12510.0 ppb (3122) | 5.2 ppb (5) | N/A | 7.0 ppb (6) | N/A | N/A | N/A | 0.31 ppb (3) | N/A | 7.0 μg/m3 (29) | 29.0 | |
| May 19, 2019, 6 a.m. | 18640.0 ppb (4658) | 8.6 ppb (8) | N/A | 10.0 ppb (9) | N/A | N/A | N/A | 0.58 ppb (6) | N/A | 7.0 μg/m3 (29) | 29.0 | |
| May 19, 2019, 5 a.m. | 19610.0 ppb (4901) | 11.6 ppb (11) | N/A | 8.0 ppb (7) | N/A | N/A | N/A | 0.41 ppb (5) | N/A | 10.0 μg/m3 (42) | 42.0 | |
| May 19, 2019, 4 a.m. | 18910.0 ppb (4726) | 9.5 ppb (9) | N/A | 9.0 ppb (8) | N/A | N/A | N/A | 0.38 ppb (4) | N/A | 12.9 μg/m3 (52) | 52.0 | |
| May 19, 2019, 3 a.m. | 24480.0 ppb (6122) | 11.5 ppb (11) | N/A | 13.0 ppb (12) | N/A | N/A | N/A | 0.52 ppb (6) | N/A | 9.9 μg/m3 (41) | 41.0 | |
| May 19, 2019, 2 a.m. | 24450.0 ppb (6114) | 13.8 ppb (13) | N/A | 11.0 ppb (10) | N/A | N/A | N/A | 0.48 ppb (5) | N/A | 9.0 μg/m3 (38) | 38.0 | |
| May 19, 2019, 1 a.m. | 18230.0 ppb (4555) | 7.5 ppb (7) | N/A | 11.0 ppb (10) | N/A | N/A | N/A | 0.38 ppb (4) | N/A | 10.9 μg/m3 (45) | 45.0 | |
| May 19, 2019, midnight | 21060.0 ppb (5265) | 8.5 ppb (8) | N/A | 13.0 ppb (12) | N/A | N/A | N/A | 0.4 ppb (4) | N/A | 5.9 μg/m3 (25) | 25.0 | |
| May 18, 2019, 11 p.m. | 16800.0 ppb (4197) | 5.1 ppb (5) | N/A | 12.0 ppb (11) | N/A | N/A | N/A | 0.32 ppb (4) | N/A | 5.0 μg/m3 (21) | 21.0 | |
| May 18, 2019, 10 p.m. | 10470.0 ppb (2611) | 3.8 ppb (4) | N/A | 7.0 ppb (6) | N/A | N/A | N/A | 0.25 ppb (3) | N/A | 5.0 μg/m3 (21) | 21.0 | |
| May 18, 2019, 9 p.m. | 10160.0 ppb (2533) | 3.0 ppb (3) | N/A | 7.0 ppb (6) | N/A | N/A | N/A | 0.25 ppb (3) | N/A | 6.9 μg/m3 (29) | 29.0 | |
| May 18, 2019, 8 p.m. | 16200.0 ppb (4047) | 6.6 ppb (6) | N/A | 10.0 ppb (9) | N/A | N/A | N/A | 0.32 ppb (4) | N/A | 3.9 μg/m3 (16) | 16.0 | |
| May 18, 2019, 7 p.m. | 28230.0 ppb (7062) | 14.3 ppb (13) | N/A | 14.0 ppb (13) | N/A | N/A | N/A | 0.46 ppb (5) | N/A | 0.9 μg/m3 (4) | 13.0 | |
| May 18, 2019, 6 p.m. | 36700.0 ppb (9184) | 18.9 ppb (18) | N/A | 18.0 ppb (17) | N/A | N/A | N/A | 0.5 ppb (6) | N/A | 0.0 μg/m3 (0) | 18.0 | |
| May 18, 2019, 5 p.m. | 25210.0 ppb (6305) | 13.6 ppb (13) | N/A | 12.0 ppb (11) | N/A | N/A | N/A | 0.45 ppb (5) | N/A | 2.0 μg/m3 (8) | 13.0 | |
| May 18, 2019, 4 p.m. | 35420.0 ppb (8864) | 20.7 ppb (19) | N/A | 15.0 ppb (14) | N/A | N/A | N/A | 0.49 ppb (5) | N/A | 2.9 μg/m3 (12) | 19.0 | |
| May 18, 2019, 3 p.m. | 37700.0 ppb (9435) | 26.0 ppb (24) | N/A | 12.0 ppb (11) | N/A | N/A | N/A | 0.53 ppb (6) | N/A | 1.0 μg/m3 (4) | 24.0 | |
| May 18, 2019, 2 p.m. | 39660.0 ppb (9926) | 26.4 ppb (24) | N/A | 13.0 ppb (12) | N/A | N/A | N/A | 0.46 ppb (5) | N/A | 2.0 μg/m3 (8) | 24.0 | |
| May 18, 2019, 1 p.m. | 37140.0 ppb (9295) | 25.8 ppb (24) | N/A | 11.0 ppb (10) | N/A | N/A | N/A | 0.45 ppb (5) | N/A | 4.9 μg/m3 (20) | 24.0 | |
| May 18, 2019, noon | 42410.0 ppb (10616) | 28.1 ppb (26) | N/A | 14.0 ppb (13) | N/A | N/A | N/A | 0.48 ppb (5) | N/A | 4.0 μg/m3 (17) | 26.0 | |
| May 18, 2019, 11 a.m. | 48190.0 ppb (12064) | 37.0 ppb (34) | N/A | 11.0 ppb (10) | N/A | N/A | N/A | 0.47 ppb (5) | N/A | 7.0 μg/m3 (29) | 34.0 | |
| May 18, 2019, 10 a.m. | 57280.0 ppb (14342) | 41.2 ppb (38) | N/A | 16.0 ppb (15) | N/A | N/A | N/A | 0.49 ppb (5) | N/A | 7.9 μg/m3 (33) | 38.0 | |
| May 18, 2019, 9 a.m. | 45950.0 ppb (11503) | 29.7 ppb (28) | N/A | 16.0 ppb (15) | N/A | N/A | N/A | 0.46 ppb (5) | N/A | 5.0 μg/m3 (21) | 28.0 | |
| May 18, 2019, 8 a.m. | 22130.0 ppb (5533) | 11.7 ppb (11) | N/A | 10.0 ppb (9) | N/A | N/A | N/A | 0.25 ppb (3) | N/A | 7.0 μg/m3 (29) | 29.0 | |
| May 18, 2019, 7 a.m. | 14.1 ppb (13) | 7.8 ppb (7) | N/A | 6.0 ppb (6) | N/A | N/A | N/A | 0.29 ppb (3) | N/A | 10.0 μg/m3 (42) | 42.0 | |
| May 18, 2019, 6 a.m. | 26680.0 ppb (6673) | 12.4 ppb (11) | N/A | 14.0 ppb (13) | N/A | N/A | N/A | 0.54 ppb (6) | N/A | 13.0 μg/m3 (52) | 52.0 | |
| May 18, 2019, 5 a.m. | 19020.0 ppb (4753) | 11.0 ppb (10) | N/A | 8.0 ppb (7) | N/A | N/A | N/A | 0.41 ppb (5) | N/A | 16.0 μg/m3 (59) | 59.0 | |
| May 18, 2019, 4 a.m. | 29180.0 ppb (7300) | 12.9 ppb (12) | N/A | 16.0 ppb (15) | N/A | N/A | N/A | 0.42 ppb (5) | N/A | 21.0 μg/m3 (69) | 69.0 | |
| May 18, 2019, 3 a.m. | 70420.0 ppb (17636) | 32.6 ppb (30) | N/A | 38.0 ppb (35) | N/A | N/A | N/A | 1.21 ppb (13) | N/A | 21.9 μg/m3 (71) | 71.0 | |
| May 18, 2019, 2 a.m. | 60570.0 ppb (15167) | 28.0 ppb (26) | N/A | 33.0 ppb (31) | N/A | N/A | N/A | 0.96 ppb (11) | N/A | 18.0 μg/m3 (63) | 63.0 | |
| May 18, 2019, 1 a.m. | 37520.0 ppb (9390) | 12.2 ppb (11) | N/A | 25.0 ppb (23) | N/A | N/A | N/A | 0.62 ppb (7) | N/A | 21.0 μg/m3 (69) | 69.0 | |
| May 18, 2019, midnight | 34760.0 ppb (8698) | 13.0 ppb (12) | N/A | 22.0 ppb (20) | N/A | N/A | N/A | 0.58 ppb (6) | N/A | 20.9 μg/m3 (69) | 69.0 | |
| May 17, 2019, 11 p.m. | 28270.0 ppb (7072) | 6.0 ppb (6) | N/A | 22.0 ppb (20) | N/A | N/A | N/A | 0.42 ppb (5) | N/A | 18.9 μg/m3 (65) | 65.0 | |
| May 17, 2019, 10 p.m. | 25440.0 ppb (6362) | 6.8 ppb (6) | N/A | 19.0 ppb (18) | N/A | N/A | N/A | 0.41 ppb (5) | N/A | 18.0 μg/m3 (63) | 63.0 | |
| May 17, 2019, 9 p.m. | 54370.0 ppb (13613) | 21.2 ppb (20) | N/A | 33.0 ppb (31) | N/A | N/A | N/A | 0.8 ppb (9) | N/A | 18.9 μg/m3 (65) | 65.0 | |
| May 17, 2019, 8 p.m. | 42650.0 ppb (10676) | 20.4 ppb (19) | N/A | 22.0 ppb (20) | N/A | N/A | N/A | 0.7 ppb (8) | N/A | 11.0 μg/m3 (46) | 46.0 | |
| May 17, 2019, 7 p.m. | 50020.0 ppb (12523) | 25.7 ppb (24) | N/A | 24.0 ppb (22) | N/A | N/A | N/A | 0.64 ppb (7) | N/A | 12.0 μg/m3 (50) | 50.0 | |
| May 17, 2019, 6 p.m. | 49170.0 ppb (12310) | 23.3 ppb (22) | N/A | 26.0 ppb (24) | N/A | N/A | N/A | 0.55 ppb (6) | N/A | 15.9 μg/m3 (58) | 58.0 | |
| May 17, 2019, 5 p.m. | 44970.0 ppb (11257) | 20.3 ppb (19) | N/A | 25.0 ppb (23) | N/A | N/A | N/A | 0.5 ppb (6) | N/A | 15.0 μg/m3 (56) | 56.0 | |
| May 17, 2019, 4 p.m. | 27650.0 ppb (6916) | 9.4 ppb (9) | N/A | 18.0 ppb (17) | N/A | N/A | N/A | 0.36 ppb (4) | N/A | 19.6 μg/m3 (66) | 66.0 | |
| May 17, 2019, 3 p.m. | 42690.0 ppb (10686) | 14.1 ppb (13) | N/A | 29.0 ppb (27) | N/A | N/A | N/A | 0.54 ppb (6) | N/A | N/A | 27.0 | |
| May 17, 2019, 2 p.m. | 37300.0 ppb (9335) | 14.0 ppb (13) | N/A | 23.0 ppb (21) | N/A | N/A | N/A | 0.4 ppb (4) | N/A | 10.0 μg/m3 (42) | 42.0 | |
| May 17, 2019, 1 p.m. | 27770.0 ppb (6946) | 8.2 ppb (8) | N/A | 20.0 ppb (19) | N/A | N/A | N/A | 0.33 ppb (4) | N/A | 13.9 μg/m3 (54) | 54.0 | |
| May 17, 2019, noon | 52910.0 ppb (13247) | 29.5 ppb (27) | N/A | 23.0 ppb (21) | N/A | N/A | N/A | 0.51 ppb (6) | N/A | 11.0 μg/m3 (46) | 46.0 | |
| May 17, 2019, 11 a.m. | 68410.0 ppb (17132) | 36.8 ppb (34) | N/A | 32.0 ppb (30) | N/A | N/A | N/A | 0.62 ppb (7) | N/A | 20.9 μg/m3 (69) | 69.0 | |
| May 17, 2019, 10 a.m. | 89420.0 ppb (22397) | 60.2 ppb (57) | N/A | 29.0 ppb (27) | N/A | N/A | N/A | 0.77 ppb (9) | N/A | 17.9 μg/m3 (63) | 63.0 | |
| May 17, 2019, 9 a.m. | 79670.0 ppb (19954) | 52.5 ppb (49) | N/A | 27.0 ppb (25) | N/A | N/A | N/A | 0.65 ppb (7) | N/A | 15.9 μg/m3 (58) | 58.0 | |
| May 17, 2019, 8 a.m. | 63230.0 ppb (15834) | 41.5 ppb (38) | N/A | 22.0 ppb (20) | N/A | N/A | N/A | 0.54 ppb (6) | N/A | 14.9 μg/m3 (56) | 56.0 | |
| May 17, 2019, 7 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 14.0 μg/m3 (54) | 54.0 | |
| May 17, 2019, 6 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 15.9 μg/m3 (58) | 58.0 | |
| May 17, 2019, 5 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 11.0 μg/m3 (46) | 46.0 | |
| May 17, 2019, 4 a.m. | 44280.0 ppb (11084) | 14.3 ppb (13) | N/A | 30.0 ppb (28) | N/A | N/A | N/A | 0.52 ppb (6) | N/A | 13.9 μg/m3 (54) | 54.0 | |
| May 17, 2019, 3 a.m. | 49620.0 ppb (12423) | 16.7 ppb (15) | N/A | 33.0 ppb (31) | N/A | N/A | N/A | 0.69 ppb (8) | N/A | 12.9 μg/m3 (52) | 52.0 | |
| May 17, 2019, 2 a.m. | 23190.0 ppb (5798) | 3.6 ppb (3) | N/A | 20.0 ppb (19) | N/A | N/A | N/A | 0.37 ppb (4) | N/A | 12.0 μg/m3 (50) | 50.0 | |
| May 17, 2019, 1 a.m. | 17690.0 ppb (4420) | 4.6 ppb (4) | N/A | 13.0 ppb (12) | N/A | N/A | N/A | 0.37 ppb (4) | N/A | 11.9 μg/m3 (50) | 50.0 | |
| May 17, 2019, midnight | 27350.0 ppb (6841) | 9.3 ppb (9) | N/A | 18.0 ppb (17) | N/A | N/A | N/A | 0.51 ppb (6) | N/A | 6.9 μg/m3 (29) | 29.0 | |
| May 16, 2019, 11 p.m. | 29100.0 ppb (7280) | 10.1 ppb (9) | N/A | 19.0 ppb (18) | N/A | N/A | N/A | 0.49 ppb (5) | N/A | 6.0 μg/m3 (25) | 25.0 | |
| May 16, 2019, 10 p.m. | 21380.0 ppb (5345) | 7.4 ppb (7) | N/A | 14.0 ppb (13) | N/A | N/A | N/A | 0.38 ppb (4) | N/A | 6.0 μg/m3 (25) | 25.0 | |
| May 16, 2019, 9 p.m. | 46550.0 ppb (11653) | 27.0 ppb (25) | N/A | 20.0 ppb (19) | N/A | N/A | N/A | 0.67 ppb (7) | N/A | 7.9 μg/m3 (33) | 33.0 | |
| May 16, 2019, 8 p.m. | 40340.0 ppb (10097) | 22.7 ppb (21) | N/A | 18.0 ppb (17) | N/A | N/A | N/A | 0.46 ppb (5) | N/A | 4.0 μg/m3 (17) | 21.0 | |
| May 16, 2019, 7 p.m. | 51720.0 ppb (12949) | 29.9 ppb (28) | N/A | 22.0 ppb (20) | N/A | N/A | N/A | 0.58 ppb (6) | N/A | 4.0 μg/m3 (17) | 28.0 | |
| May 16, 2019, 6 p.m. | 59550.0 ppb (14911) | 40.1 ppb (37) | N/A | 19.0 ppb (18) | N/A | N/A | N/A | 0.52 ppb (6) | N/A | 9.0 μg/m3 (38) | 38.0 | |
| May 16, 2019, 5 p.m. | 62530.0 ppb (15658) | 41.9 ppb (39) | N/A | 21.0 ppb (19) | N/A | N/A | N/A | 0.56 ppb (6) | N/A | 13.9 μg/m3 (54) | 54.0 | |
| May 16, 2019, 4 p.m. | 62680.0 ppb (15696) | 42.9 ppb (40) | N/A | 20.0 ppb (19) | N/A | N/A | N/A | 0.63 ppb (7) | N/A | 10.0 μg/m3 (42) | 42.0 | |
| May 16, 2019, 3 p.m. | 52000.0 ppb (13019) | 30.0 ppb (28) | N/A | 22.0 ppb (20) | N/A | N/A | N/A | 0.52 ppb (6) | N/A | 9.9 μg/m3 (41) | 41.0 | |
| May 16, 2019, 2 p.m. | 82190.0 ppb (20585) | 52.4 ppb (49) | N/A | 30.0 ppb (28) | N/A | N/A | N/A | 0.65 ppb (7) | N/A | 8.0 μg/m3 (33) | 49.0 | |
| May 16, 2019, 1 p.m. | 65130.0 ppb (16310) | 42.6 ppb (39) | N/A | 22.0 ppb (20) | N/A | N/A | N/A | 0.54 ppb (6) | N/A | 8.0 μg/m3 (33) | 39.0 | |
| May 16, 2019, noon | 75640.0 ppb (18944) | 50.3 ppb (47) | N/A | 25.0 ppb (23) | N/A | N/A | N/A | 0.69 ppb (8) | N/A | 12.0 μg/m3 (50) | 50.0 | |
| May 16, 2019, 11 a.m. | N/A | 82.9 ppb (81) | N/A | 28.0 ppb (26) | N/A | N/A | N/A | 0.98 ppb (11) | N/A | 12.0 μg/m3 (50) | 81.0 | |
| May 16, 2019, 10 a.m. | 97090.0 ppb (24320) | 71.8 ppb (69) | N/A | 25.0 ppb (23) | N/A | N/A | N/A | 0.84 ppb (9) | N/A | 12.9 μg/m3 (52) | 69.0 | |
| May 16, 2019, 9 a.m. | N/A | 82.3 ppb (80) | N/A | 23.0 ppb (21) | N/A | N/A | N/A | 0.79 ppb (9) | N/A | 10.0 μg/m3 (42) | 80.0 | |
| May 16, 2019, 8 a.m. | 73000.0 ppb (18282) | 48.5 ppb (45) | N/A | 24.0 ppb (22) | N/A | N/A | N/A | 0.52 ppb (6) | N/A | 9.9 μg/m3 (41) | 45.0 | |
| May 16, 2019, 7 a.m. | 77700.0 ppb (19460) | 46.6 ppb (43) | N/A | 31.0 ppb (29) | N/A | N/A | N/A | 0.52 ppb (6) | N/A | 3.0 μg/m3 (12) | 43.0 | |
| May 16, 2019, 6 a.m. | 58990.0 ppb (14771) | 29.1 ppb (27) | N/A | 30.0 ppb (28) | N/A | N/A | N/A | 0.41 ppb (5) | N/A | 4.0 μg/m3 (17) | 28.0 | |
| May 16, 2019, 5 a.m. | 26510.0 ppb (6631) | 9.8 ppb (9) | N/A | 17.0 ppb (16) | N/A | N/A | N/A | 0.39 ppb (4) | N/A | 3.9 μg/m3 (16) | 16.0 | |
| May 16, 2019, 4 a.m. | 21180.0 ppb (5295) | 8.8 ppb (8) | N/A | 12.0 ppb (11) | N/A | N/A | N/A | 0.28 ppb (3) | N/A | 3.0 μg/m3 (12) | 12.0 | |
| May 16, 2019, 3 a.m. | 22540.0 ppb (5636) | 7.5 ppb (7) | N/A | 15.0 ppb (14) | N/A | N/A | N/A | 0.35 ppb (4) | N/A | 5.0 μg/m3 (21) | 21.0 | |
| May 16, 2019, 2 a.m. | 19940.0 ppb (4984) | 5.0 ppb (5) | N/A | 15.0 ppb (14) | N/A | N/A | N/A | 0.3 ppb (3) | N/A | 6.9 μg/m3 (29) | 29.0 | |
| May 16, 2019, 1 a.m. | 31790.0 ppb (7954) | 13.4 ppb (12) | N/A | 18.0 ppb (17) | N/A | N/A | N/A | 0.4 ppb (4) | N/A | 4.9 μg/m3 (20) | 20.0 | |
| May 16, 2019, midnight | 40530.0 ppb (10144) | 16.5 ppb (15) | N/A | 24.0 ppb (22) | N/A | N/A | N/A | 0.47 ppb (5) | N/A | 3.0 μg/m3 (12) | 22.0 | |
| May 15, 2019, 11 p.m. | 45290.0 ppb (11337) | 21.6 ppb (20) | N/A | 24.0 ppb (22) | N/A | N/A | N/A | 0.61 ppb (7) | N/A | 4.0 μg/m3 (17) | 22.0 | |
| May 15, 2019, 10 p.m. | 55150.0 ppb (13809) | 34.6 ppb (32) | N/A | 21.0 ppb (19) | N/A | N/A | N/A | 0.61 ppb (7) | N/A | 6.0 μg/m3 (25) | 32.0 | |
| May 15, 2019, 9 p.m. | 41590.0 ppb (10410) | 27.8 ppb (26) | N/A | 14.0 ppb (13) | N/A | N/A | N/A | 0.55 ppb (6) | N/A | 5.9 μg/m3 (25) | 26.0 | |
| May 15, 2019, 8 p.m. | 51920.0 ppb (12999) | 34.2 ppb (32) | N/A | 18.0 ppb (17) | N/A | N/A | N/A | 0.58 ppb (6) | N/A | 3.0 μg/m3 (12) | 32.0 | |
| May 15, 2019, 7 p.m. | 69330.0 ppb (17362) | 46.7 ppb (43) | N/A | 23.0 ppb (21) | N/A | N/A | N/A | 0.65 ppb (7) | N/A | 3.0 μg/m3 (12) | 43.0 | |
| May 15, 2019, 6 p.m. | 63840.0 ppb (15986) | 44.8 ppb (41) | N/A | 19.0 ppb (18) | N/A | N/A | N/A | 0.56 ppb (6) | N/A | 4.9 μg/m3 (20) | 41.0 | |
| May 15, 2019, 5 p.m. | 78150.0 ppb (19573) | 59.9 ppb (56) | N/A | 18.0 ppb (17) | N/A | N/A | N/A | 0.58 ppb (6) | N/A | 3.0 μg/m3 (12) | 56.0 | |
| May 15, 2019, 4 p.m. | 68820.0 ppb (17235) | 44.7 ppb (41) | N/A | 24.0 ppb (22) | N/A | N/A | N/A | 0.55 ppb (6) | N/A | 4.0 μg/m3 (17) | 41.0 | |
| May 15, 2019, 3 p.m. | 65680.0 ppb (16448) | 44.7 ppb (41) | N/A | 21.0 ppb (19) | N/A | N/A | N/A | 0.5 ppb (6) | N/A | 5.9 μg/m3 (25) | 41.0 | |
| May 15, 2019, 2 p.m. | 63000.0 ppb (15776) | 47.5 ppb (44) | N/A | 16.0 ppb (15) | N/A | N/A | N/A | 0.51 ppb (6) | N/A | 4.9 μg/m3 (20) | 44.0 | |
| May 15, 2019, 1 p.m. | 66070.0 ppb (16545) | 52.8 ppb (49) | N/A | 13.0 ppb (12) | N/A | N/A | N/A | 0.57 ppb (6) | N/A | 3.9 μg/m3 (16) | 49.0 | |
| May 15, 2019, noon | 83910.0 ppb (21017) | 66.3 ppb (63) | N/A | 18.0 ppb (17) | N/A | N/A | N/A | 0.69 ppb (8) | N/A | -2.0 μg/m3 (0) | 63.0 | |
| May 15, 2019, 11 a.m. | 109.6 ppb (102) | 85.5 ppb (84) | N/A | 24.0 ppb (22) | N/A | N/A | N/A | 0.85 ppb (9) | N/A | N/A | 84.0 | |
| May 15, 2019, 10 a.m. | 128.4 ppb (105) | 100.7 ppb (100) | N/A | 28.0 ppb (26) | N/A | N/A | N/A | 0.85 ppb (9) | N/A | -4.0 μg/m3 (0) | 100.0 | |
| May 15, 2019, 9 a.m. | 102.3 ppb (100) | 74.4 ppb (72) | N/A | 28.0 ppb (26) | N/A | N/A | N/A | 0.7 ppb (8) | N/A | -1.0 μg/m3 (0) | 72.0 | |
| May 15, 2019, 8 a.m. | 46.7 ppb (43) | 34.2 ppb (32) | N/A | 12.0 ppb (11) | N/A | N/A | N/A | 0.47 ppb (5) | N/A | N/A | 32.0 | |
| May 15, 2019, 3 a.m. | 40220.0 ppb (10067) | 21.9 ppb (20) | N/A | 18.0 ppb (17) | N/A | N/A | N/A | 0.53 ppb (6) | N/A | 3.0 μg/m3 (12) | 20.0 | |
| May 15, 2019, 2 a.m. | 21560.0 ppb (5390) | 8.6 ppb (8) | N/A | 13.0 ppb (12) | N/A | N/A | N/A | 0.37 ppb (4) | N/A | 3.9 μg/m3 (16) | 16.0 | |
| May 15, 2019, 1 a.m. | 12380.0 ppb (3089) | 4.1 ppb (4) | N/A | 8.0 ppb (7) | N/A | N/A | N/A | 0.25 ppb (3) | N/A | 3.0 μg/m3 (12) | 12.0 | |
| May 15, 2019, midnight | 12900.0 ppb (3220) | 4.2 ppb (4) | N/A | 9.0 ppb (8) | N/A | N/A | N/A | 0.23 ppb (3) | N/A | 2.9 μg/m3 (12) | 12.0 | |
| May 14, 2019, 11 p.m. | 12230.0 ppb (3052) | 4.3 ppb (4) | N/A | 8.0 ppb (7) | N/A | N/A | N/A | 0.23 ppb (3) | N/A | 2.0 μg/m3 (8) | 8.0 | |
| May 14, 2019, 10 p.m. | 14420.0 ppb (3601) | 6.0 ppb (6) | N/A | 8.0 ppb (7) | N/A | N/A | N/A | 0.29 ppb (3) | N/A | 3.0 μg/m3 (12) | 12.0 | |
| May 14, 2019, 9 p.m. | 24.9 ppb (23) | 11.3 ppb (10) | N/A | 14.0 ppb (13) | N/A | N/A | N/A | 0.38 ppb (4) | N/A | 2.0 μg/m3 (8) | 13.0 | |
| May 14, 2019, 8 p.m. | 32.0 ppb (30) | 19.3 ppb (18) | N/A | 13.0 ppb (12) | N/A | N/A | N/A | 0.44 ppb (5) | N/A | 1.0 μg/m3 (4) | 18.0 | |
| May 14, 2019, 7 p.m. | 21.1 ppb (20) | 12.1 ppb (11) | N/A | 9.0 ppb (8) | N/A | N/A | N/A | 0.31 ppb (3) | N/A | 3.0 μg/m3 (12) | 12.0 | |
| May 14, 2019, 6 p.m. | 42110.0 ppb (10540) | 26.3 ppb (24) | N/A | 16.0 ppb (15) | N/A | N/A | N/A | 0.44 ppb (5) | N/A | 3.9 μg/m3 (16) | 24.0 | |
| May 14, 2019, 5 p.m. | 71790.0 ppb (17979) | 53.0 ppb (49) | N/A | 19.0 ppb (18) | N/A | N/A | N/A | 0.56 ppb (6) | N/A | 2.9 μg/m3 (12) | 49.0 | |
| May 14, 2019, 4 p.m. | 72500.0 ppb (18157) | 52.0 ppb (48) | N/A | 21.0 ppb (19) | N/A | N/A | N/A | 0.57 ppb (6) | N/A | 2.0 μg/m3 (8) | 48.0 | |
| May 14, 2019, 3 p.m. | 67.6 ppb (64) | 45.0 ppb (42) | N/A | 23.0 ppb (21) | N/A | N/A | N/A | 0.57 ppb (6) | N/A | 2.0 μg/m3 (8) | 42.0 | |
| May 14, 2019, 2 p.m. | 62.2 ppb (59) | 43.4 ppb (40) | N/A | 19.0 ppb (18) | N/A | N/A | N/A | 0.48 ppb (5) | N/A | 4.0 μg/m3 (17) | 40.0 | |
| May 14, 2019, 1 p.m. | 73.5 ppb (71) | 54.6 ppb (51) | N/A | 19.0 ppb (18) | N/A | N/A | N/A | 0.54 ppb (6) | N/A | 5.0 μg/m3 (21) | 51.0 | |
| May 14, 2019, noon | 77.3 ppb (75) | 53.7 ppb (50) | N/A | 24.0 ppb (22) | N/A | N/A | N/A | 0.58 ppb (6) | N/A | 5.0 μg/m3 (21) | 50.0 | |
| May 14, 2019, 11 a.m. | 74.2 ppb (71) | 48.7 ppb (45) | N/A | 26.0 ppb (24) | N/A | N/A | N/A | 0.62 ppb (7) | N/A | 1.0 μg/m3 (4) | 45.0 | |
| May 14, 2019, 10 a.m. | 95.0 ppb (94) | 67.1 ppb (64) | N/A | 28.0 ppb (26) | N/A | N/A | N/A | 0.66 ppb (7) | N/A | 0.0 μg/m3 (0) | 64.0 | |
| May 14, 2019, 9 a.m. | 73.1 ppb (70) | 48.7 ppb (45) | N/A | 25.0 ppb (23) | N/A | N/A | N/A | 0.54 ppb (6) | N/A | 0.0 μg/m3 (0) | 45.0 | |
| May 14, 2019, 8 a.m. | 42.2 ppb (39) | 25.0 ppb (23) | N/A | 17.0 ppb (16) | N/A | N/A | N/A | 0.29 ppb (3) | N/A | -1.0 μg/m3 (0) | 23.0 | |
| May 14, 2019, 7 a.m. | 38.5 ppb (36) | 24.5 ppb (23) | N/A | 14.0 ppb (13) | N/A | N/A | N/A | 0.21 ppb (2) | N/A | -1.0 μg/m3 (0) | 23.0 | |
| May 14, 2019, 6 a.m. | 17.1 ppb (16) | 5.2 ppb (5) | N/A | 12.0 ppb (11) | N/A | N/A | N/A | 0.17 ppb (2) | N/A | 0.0 μg/m3 (0) | 11.0 | |
| May 14, 2019, 5 a.m. | 10.5 ppb (10) | 4.6 ppb (4) | N/A | 6.0 ppb (6) | N/A | N/A | N/A | 0.17 ppb (2) | N/A | 0.0 μg/m3 (0) | 6.0 | |
| May 14, 2019, 4 a.m. | 3920.0 ppb (969) | 1.3 ppb (1) | N/A | 3.0 ppb (3) | N/A | N/A | N/A | 0.12 ppb (1) | N/A | 3.0 μg/m3 (12) | 12.0 | |
| May 14, 2019, 3 a.m. | 4870.0 ppb (1207) | 1.4 ppb (1) | N/A | 3.0 ppb (3) | N/A | N/A | N/A | 0.17 ppb (2) | N/A | 4.0 μg/m3 (17) | 17.0 | |
| May 14, 2019, 2 a.m. | 4240.0 ppb (1049) | 1.7 ppb (2) | N/A | 3.0 ppb (3) | N/A | N/A | N/A | 0.17 ppb (2) | N/A | 6.0 μg/m3 (25) | 25.0 | |
| May 14, 2019, 1 a.m. | 6.3 ppb (6) | 2.3 ppb (2) | N/A | 4.0 ppb (4) | N/A | N/A | N/A | 0.21 ppb (2) | N/A | 8.0 μg/m3 (33) | 33.0 | |
| May 14, 2019, midnight | 13740.0 ppb (3430) | 8.6 ppb (8) | N/A | 5.0 ppb (5) | N/A | N/A | N/A | 0.27 ppb (3) | N/A | 6.0 μg/m3 (25) | 25.0 | |
| May 13, 2019, 11 p.m. | 13030.0 ppb (3252) | 6.2 ppb (6) | N/A | 7.0 ppb (6) | N/A | N/A | N/A | 0.25 ppb (3) | N/A | 7.9 μg/m3 (33) | 33.0 | |
| May 13, 2019, 10 p.m. | 10850.0 ppb (2706) | 4.5 ppb (4) | N/A | 6.0 ppb (6) | N/A | N/A | N/A | 0.23 ppb (3) | N/A | 5.9 μg/m3 (25) | 25.0 | |
| May 13, 2019, 9 p.m. | 14940.0 ppb (3731) | 7.1 ppb (7) | N/A | 8.0 ppb (7) | N/A | N/A | N/A | 0.28 ppb (3) | N/A | 2.9 μg/m3 (12) | 12.0 | |
| May 13, 2019, 8 p.m. | 20990.0 ppb (5247) | 13.6 ppb (13) | N/A | 7.0 ppb (6) | N/A | N/A | N/A | 0.33 ppb (4) | N/A | 2.0 μg/m3 (8) | 13.0 | |
| May 13, 2019, 7 p.m. | 20010.0 ppb (5002) | 14.7 ppb (14) | N/A | 5.0 ppb (5) | N/A | N/A | N/A | 0.3 ppb (3) | N/A | 3.0 μg/m3 (12) | 14.0 | |
| May 13, 2019, 6 p.m. | 26.5 ppb (25) | 15.0 ppb (14) | N/A | 12.0 ppb (11) | N/A | N/A | N/A | 0.3 ppb (3) | N/A | 3.0 μg/m3 (12) | 14.0 | |
| May 13, 2019, 5 p.m. | 20.3 ppb (19) | 12.1 ppb (11) | N/A | 8.0 ppb (7) | N/A | N/A | N/A | 0.27 ppb (3) | N/A | 2.0 μg/m3 (8) | 11.0 | |
| May 13, 2019, 4 p.m. | 23630.0 ppb (5909) | 11.8 ppb (11) | N/A | 12.0 ppb (11) | N/A | N/A | N/A | 0.28 ppb (3) | N/A | 2.0 μg/m3 (8) | 11.0 | |
| May 13, 2019, 3 p.m. | 16350.0 ppb (4084) | 10.2 ppb (9) | N/A | 6.0 ppb (6) | N/A | N/A | N/A | 0.23 ppb (3) | N/A | 2.0 μg/m3 (8) | 9.0 | |
| May 13, 2019, 2 p.m. | 17.5 ppb (16) | 12.7 ppb (12) | N/A | 5.0 ppb (5) | N/A | N/A | N/A | 0.24 ppb (3) | N/A | 2.0 μg/m3 (8) | 12.0 | |
| May 13, 2019, 1 p.m. | 17.9 ppb (17) | 9.4 ppb (9) | N/A | 9.0 ppb (8) | N/A | N/A | N/A | 0.22 ppb (2) | N/A | 1.0 μg/m3 (4) | 9.0 | |
| May 13, 2019, noon | 21580.0 ppb (5395) | 10.2 ppb (9) | N/A | 11.0 ppb (10) | N/A | N/A | N/A | 0.25 ppb (3) | N/A | 1.0 μg/m3 (4) | 10.0 | |
| May 13, 2019, 11 a.m. | 20070.0 ppb (5017) | 13.6 ppb (13) | N/A | 6.0 ppb (6) | N/A | N/A | N/A | 0.27 ppb (3) | N/A | 4.0 μg/m3 (17) | 17.0 | |
| May 13, 2019, 10 a.m. | 26.6 ppb (25) | 15.5 ppb (14) | N/A | 11.0 ppb (10) | N/A | N/A | N/A | 0.28 ppb (3) | N/A | 4.0 μg/m3 (17) | 17.0 | |
| May 13, 2019, 9 a.m. | 13.7 ppb (13) | 4.3 ppb (4) | N/A | 9.0 ppb (8) | N/A | N/A | N/A | 0.23 ppb (3) | N/A | 4.0 μg/m3 (17) | 17.0 | |
| May 13, 2019, 8 a.m. | 15.2 ppb (14) | 2.9 ppb (3) | N/A | 12.0 ppb (11) | N/A | N/A | N/A | 0.22 ppb (2) | N/A | 5.0 μg/m3 (21) | 21.0 | |
| May 13, 2019, 7 a.m. | 20.4 ppb (19) | 8.1 ppb (8) | N/A | 12.0 ppb (11) | N/A | N/A | N/A | 0.22 ppb (2) | N/A | 3.0 μg/m3 (12) | 12.0 | |
| May 13, 2019, 6 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 4.0 μg/m3 (17) | 17.0 | |
| May 13, 2019, 5 a.m. | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 3.0 μg/m3 (12) | 12.0 | |
| May 13, 2019, 3 a.m. | 18090.0 ppb (4520) | 7.7 ppb (7) | N/A | 10.0 ppb (9) | N/A | N/A | N/A | 0.3 ppb (3) | N/A | 1.0 μg/m3 (4) | 9.0 | |
| May 13, 2019, 2 a.m. | 13070.0 ppb (3262) | 7.7 ppb (7) | N/A | 5.0 ppb (5) | N/A | N/A | N/A | 0.24 ppb (3) | N/A | 1.0 μg/m3 (4) | 7.0 | |
| May 13, 2019, 1 a.m. | 11300.0 ppb (2819) | 3.7 ppb (3) | N/A | 8.0 ppb (7) | N/A | N/A | N/A | 0.26 ppb (3) | N/A | 2.0 μg/m3 (8) | 8.0 | |
| May 13, 2019, midnight | 14310.0 ppb (3573) | 5.1 ppb (5) | N/A | 9.0 ppb (8) | N/A | N/A | N/A | 0.31 ppb (3) | N/A | 4.9 μg/m3 (20) | 20.0 | |
| May 12, 2019, 11 p.m. | 9740.0 ppb (2428) | 3.9 ppb (4) | N/A | 6.0 ppb (6) | N/A | N/A | N/A | 0.24 ppb (3) | N/A | 2.9 μg/m3 (12) | 12.0 | |
| May 12, 2019, 10 p.m. | 13270.0 ppb (3312) | 5.5 ppb (5) | N/A | 8.0 ppb (7) | N/A | N/A | N/A | 0.29 ppb (3) | N/A | 1.0 μg/m3 (4) | 7.0 | |
| May 12, 2019, 9 p.m. | 11700.0 ppb (2919) | 5.0 ppb (5) | N/A | 7.0 ppb (6) | N/A | N/A | N/A | 0.27 ppb (3) | N/A | 2.9 μg/m3 (12) | 12.0 | |
| May 12, 2019, 8 p.m. | 13770.0 ppb (3438) | 7.5 ppb (7) | N/A | 6.0 ppb (6) | N/A | N/A | N/A | 0.27 ppb (3) | N/A | 1.0 μg/m3 (4) | 7.0 | |
| May 12, 2019, 7 p.m. | 12790.0 ppb (3192) | 5.9 ppb (5) | N/A | 7.0 ppb (6) | N/A | N/A | N/A | 0.27 ppb (3) | N/A | 3.0 μg/m3 (12) | 12.0 | |
| May 12, 2019, 6 p.m. | 9.6 ppb (9) | 3.8 ppb (4) | N/A | 6.0 ppb (6) | N/A | N/A | N/A | 0.24 ppb (3) | N/A | 4.0 μg/m3 (17) | 17.0 | |
| May 12, 2019, 5 p.m. | 7790.0 ppb (1939) | 3.2 ppb (3) | N/A | 5.0 ppb (5) | N/A | N/A | N/A | 0.23 ppb (3) | N/A | 3.0 μg/m3 (12) | 12.0 | |
| May 12, 2019, 4 p.m. | 6800.0 ppb (1691) | 4.0 ppb (4) | N/A | 3.0 ppb (3) | N/A | N/A | N/A | 0.26 ppb (3) | N/A | 4.0 μg/m3 (17) | 17.0 |