AQSQID: 440071010

Site Name: E Providence

Location: E Providence, RI

Reporting: True, Located: True

Current AQI: 26.0

E Providence RI, US: 41.840302, -71.361702

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
July 23, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) N/A N/A 5.0 μg/m3 (21) 26.0
 
July 23, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) N/A N/A 5.0 μg/m3 (21) 28.0
 
July 23, 2019, 7 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 6.0 μg/m3 (25) 25.0
 
July 23, 2019, 6 a.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) N/A N/A 7.0 μg/m3 (29) 29.0
 
July 23, 2019, 5 a.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) N/A N/A 4.0 μg/m3 (17) 25.0
 
July 23, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (25) N/A N/A 1.0 μg/m3 (4) 25.0
 
July 23, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) N/A N/A 3.0 μg/m3 (12) 24.0
 
July 23, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) N/A N/A 3.0 μg/m3 (12) 23.0
 
July 23, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (25) N/A N/A 5.0 μg/m3 (21) 25.0
 
July 23, 2019, midnight N/A N/A N/A N/A N/A N/A 31.0 ppb (24) N/A N/A 8.0 μg/m3 (33) 33.0
 
July 22, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) N/A N/A 7.0 μg/m3 (29) 29.0
 
July 22, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (26) N/A N/A 6.0 μg/m3 (25) 26.0
 
July 22, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) N/A N/A 7.0 μg/m3 (29) 29.0
 
July 22, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A N/A 7.0 μg/m3 (29) 29.0
 
July 22, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (28) N/A N/A 7.0 μg/m3 (29) 29.0
 
July 22, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A N/A 8.0 μg/m3 (33) 33.0
 
July 22, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (32) N/A N/A 8.0 μg/m3 (33) 33.0
 
July 22, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (35) N/A N/A 10.0 μg/m3 (42) 42.0
 
July 22, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 51.0 ppb (39) N/A N/A 4.0 μg/m3 (17) 39.0
 
July 22, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (36) N/A N/A 6.0 μg/m3 (25) 36.0
 
July 22, 2019, 1 p.m. 4.7 ppb (4) 0.5 ppb (0) 3.6 ppb (3) 4.0 ppb (4) 3.1 ppb (3) N/A 39.0 ppb (30) N/A N/A 7.0 μg/m3 (29) 30.0
 
July 22, 2019, noon 4.8 ppb (4) 0.5 ppb (0) 3.9 ppb (4) 4.0 ppb (4) 3.3 ppb (3) N/A 34.0 ppb (26) N/A N/A 7.0 μg/m3 (29) 29.0
 
July 22, 2019, 11 a.m. 6.3 ppb (6) 0.7 ppb (1) 5.3 ppb (5) 6.0 ppb (6) 4.5 ppb (4) N/A 30.0 ppb (23) N/A N/A 9.0 μg/m3 (38) 38.0
 
July 22, 2019, 10 a.m. 8.1 ppb (8) 0.6 ppb (1) 6.8 ppb (6) 8.0 ppb (7) 6.1 ppb (6) N/A 28.0 ppb (22) N/A N/A 4.0 μg/m3 (17) 22.0
 
July 22, 2019, 9 a.m. 6.3 ppb (6) 0.2 ppb (0) 5.0 ppb (5) 6.0 ppb (6) 4.8 ppb (4) N/A 30.0 ppb (23) N/A N/A 3.0 μg/m3 (12) 23.0
 
July 22, 2019, 8 a.m. 3.2 ppb (3) 0.0 ppb (0) 1.9 ppb (2) 3.0 ppb (3) 1.8 ppb (2) N/A 36.0 ppb (28) N/A N/A 3.0 μg/m3 (12) 28.0
 
July 22, 2019, 7 a.m. 3.2 ppb (3) 0.1 ppb (0) 1.8 ppb (2) 3.0 ppb (3) 1.7 ppb (2) N/A 38.0 ppb (29) N/A N/A 5.0 μg/m3 (21) 29.0
 
July 22, 2019, 6 a.m. N/A N/A 1.5 ppb (1) N/A 1.4 ppb (1) N/A 39.0 ppb (30) N/A N/A 8.0 μg/m3 (33) 33.0
 
July 22, 2019, 5 a.m. N/A N/A 2.0 ppb (2) N/A 1.9 ppb (2) N/A 39.0 ppb (30) N/A N/A 12.0 μg/m3 (50) 50.0
 
July 22, 2019, 4 a.m. 3.6 ppb (3) 0.0 ppb (0) 1.8 ppb (2) 4.0 ppb (4) 1.7 ppb (2) N/A 41.0 ppb (32) N/A N/A 3.0 μg/m3 (12) 32.0
 
July 22, 2019, 3 a.m. 3.7 ppb (3) 0.0 ppb (0) 1.6 ppb (1) 4.0 ppb (4) 1.5 ppb (1) N/A 43.0 ppb (33) N/A N/A 5.0 μg/m3 (21) 33.0
 
July 22, 2019, 2 a.m. 4.3 ppb (4) 0.0 ppb (0) 2.1 ppb (2) 4.0 ppb (4) 2.0 ppb (2) N/A 43.0 ppb (33) N/A N/A 4.0 μg/m3 (17) 33.0
 
July 22, 2019, 1 a.m. 4.2 ppb (4) 0.0 ppb (0) 2.5 ppb (2) 4.0 ppb (4) 2.4 ppb (2) N/A 43.0 ppb (33) N/A N/A 4.0 μg/m3 (17) 33.0
 
July 22, 2019, midnight 3.4 ppb (3) 0.0 ppb (0) 2.4 ppb (2) 3.0 ppb (3) 2.3 ppb (2) N/A 44.0 ppb (34) N/A N/A 6.0 μg/m3 (25) 34.0
 
July 21, 2019, 11 p.m. 2.0 ppb (2) 0.0 ppb (0) 1.6 ppb (1) 2.0 ppb (2) 1.4 ppb (1) N/A 48.0 ppb (37) N/A N/A 8.0 μg/m3 (33) 37.0
 
July 21, 2019, 10 p.m. 1.3 ppb (1) 0.1 ppb (0) 1.2 ppb (1) 1.0 ppb (1) 1.0 ppb (1) N/A 50.0 ppb (38) N/A N/A 6.0 μg/m3 (25) 38.0
 
July 21, 2019, 9 p.m. 1.0 ppb (1) 0.1 ppb (0) 1.0 ppb (1) 1.0 ppb (1) 0.8 ppb (1) N/A 48.0 ppb (37) N/A N/A 7.0 μg/m3 (29) 37.0
 
July 21, 2019, 8 p.m. 1.0 ppb (1) 0.1 ppb (0) 1.0 ppb (1) 1.0 ppb (1) 0.8 ppb (1) N/A 51.0 ppb (39) N/A N/A 9.0 μg/m3 (38) 39.0
 
July 21, 2019, 7 p.m. 1.1 ppb (1) 0.1 ppb (0) 1.1 ppb (1) 1.0 ppb (1) 0.9 ppb (1) N/A 51.0 ppb (39) N/A N/A 8.0 μg/m3 (33) 39.0
 
July 21, 2019, 6 p.m. 1.0 ppb (1) 0.1 ppb (0) 1.1 ppb (1) 1.0 ppb (1) 0.9 ppb (1) N/A 52.0 ppb (40) N/A N/A 6.0 μg/m3 (25) 40.0
 
July 21, 2019, 5 p.m. 1.6 ppb (1) 0.2 ppb (0) 1.6 ppb (1) 2.0 ppb (2) 1.4 ppb (1) N/A 51.0 ppb (39) N/A N/A 9.0 μg/m3 (38) 39.0
 
July 21, 2019, 4 p.m. 3.7 ppb (3) 0.5 ppb (0) 3.5 ppb (3) 3.0 ppb (3) 3.0 ppb (3) N/A 45.0 ppb (35) N/A N/A 9.0 μg/m3 (38) 38.0
 
July 21, 2019, 3 p.m. 2.4 ppb (2) 0.2 ppb (0) 2.2 ppb (2) 2.0 ppb (2) 1.9 ppb (2) N/A 43.0 ppb (33) N/A N/A 8.0 μg/m3 (33) 33.0
 
July 21, 2019, 2 p.m. 1.3 ppb (1) 0.1 ppb (0) 1.2 ppb (1) 1.0 ppb (1) 1.0 ppb (1) N/A 44.0 ppb (34) N/A N/A 10.0 μg/m3 (42) 42.0
 
July 21, 2019, 1 p.m. 1.5 ppb (1) 0.1 ppb (0) 1.2 ppb (1) 1.0 ppb (1) 1.0 ppb (1) N/A 44.0 ppb (34) N/A N/A 11.0 μg/m3 (46) 46.0
 
July 21, 2019, noon 1.9 ppb (2) 0.2 ppb (0) 1.6 ppb (1) 2.0 ppb (2) 1.4 ppb (1) N/A 41.0 ppb (32) N/A N/A 10.0 μg/m3 (42) 42.0
 
July 21, 2019, 11 a.m. 2.8 ppb (3) 0.3 ppb (0) 2.3 ppb (2) 3.0 ppb (3) 2.0 ppb (2) N/A 37.0 ppb (28) N/A N/A 11.0 μg/m3 (46) 46.0
 
July 21, 2019, 10 a.m. 4.2 ppb (4) 0.2 ppb (0) 3.5 ppb (3) 4.0 ppb (4) 3.2 ppb (3) N/A 34.0 ppb (26) N/A N/A 13.0 μg/m3 (52) 52.0
 
July 21, 2019, 9 a.m. 2.1 ppb (2) 0.0 ppb (0) 1.6 ppb (1) 2.0 ppb (2) 1.5 ppb (1) N/A 41.0 ppb (32) N/A N/A 11.0 μg/m3 (46) 46.0
 
July 21, 2019, 8 a.m. 1.9 ppb (2) 0.0 ppb (0) 1.4 ppb (1) 2.0 ppb (2) 1.3 ppb (1) N/A 43.0 ppb (33) N/A N/A 5.0 μg/m3 (21) 33.0
 
July 21, 2019, 7 a.m. 2.1 ppb (2) 0.0 ppb (0) 1.7 ppb (2) 2.0 ppb (2) 1.6 ppb (1) N/A 41.0 ppb (32) N/A N/A 7.0 μg/m3 (29) 32.0
 
July 21, 2019, 6 a.m. 2.3 ppb (2) 0.0 ppb (0) 1.8 ppb (2) 2.0 ppb (2) 1.8 ppb (2) N/A 37.0 ppb (28) N/A N/A 10.0 μg/m3 (42) 42.0
 
July 21, 2019, 5 a.m. 6.4 ppb (6) 0.1 ppb (0) 5.7 ppb (5) 6.0 ppb (6) 5.6 ppb (5) N/A 34.0 ppb (26) N/A N/A 15.0 μg/m3 (56) 56.0
 
July 21, 2019, 4 a.m. 6.9 ppb (6) 0.0 ppb (0) 6.0 ppb (6) 7.0 ppb (6) 5.9 ppb (5) N/A 40.0 ppb (31) N/A N/A 12.0 μg/m3 (50) 50.0
 
July 21, 2019, 3 a.m. 7.2 ppb (7) 0.0 ppb (0) 6.3 ppb (6) 7.0 ppb (6) 6.2 ppb (6) N/A 43.0 ppb (33) N/A N/A 18.0 μg/m3 (63) 63.0
 
July 21, 2019, 2 a.m. 6.0 ppb (6) 0.0 ppb (0) 5.3 ppb (5) 6.0 ppb (6) 5.3 ppb (5) N/A 46.0 ppb (35) N/A N/A 21.0 μg/m3 (69) 69.0
 
July 21, 2019, 1 a.m. 6.5 ppb (6) 0.0 ppb (0) 5.8 ppb (5) 7.0 ppb (6) 5.7 ppb (5) N/A 44.0 ppb (34) N/A N/A 18.0 μg/m3 (63) 63.0
 
July 21, 2019, midnight 4.7 ppb (4) 0.0 ppb (0) 4.0 ppb (4) 5.0 ppb (5) 3.9 ppb (4) N/A 52.0 ppb (40) N/A N/A 18.0 μg/m3 (63) 63.0
 
July 20, 2019, 11 p.m. 4.4 ppb (4) 0.1 ppb (0) 3.8 ppb (4) 4.0 ppb (4) 3.6 ppb (3) N/A 54.0 ppb (42) N/A N/A 18.0 μg/m3 (63) 63.0
 
July 20, 2019, 10 p.m. 3.9 ppb (4) 0.1 ppb (0) 4.1 ppb (4) 4.0 ppb (4) 3.9 ppb (4) N/A 54.0 ppb (42) N/A N/A 20.0 μg/m3 (67) 67.0
 
July 20, 2019, 9 p.m. 1.5 ppb (1) 0.1 ppb (0) 1.8 ppb (2) 2.0 ppb (2) 1.6 ppb (1) N/A 52.0 ppb (40) N/A N/A 13.0 μg/m3 (52) 52.0
 
July 20, 2019, 8 p.m. 1.6 ppb (1) 0.1 ppb (0) 2.1 ppb (2) 2.0 ppb (2) 1.9 ppb (2) N/A 53.0 ppb (41) N/A N/A 14.0 μg/m3 (54) 54.0
 
July 20, 2019, 7 p.m. 1.9 ppb (2) 0.1 ppb (0) 2.4 ppb (2) 2.0 ppb (2) 2.1 ppb (2) N/A 53.0 ppb (41) N/A N/A 12.0 μg/m3 (50) 50.0
 
July 20, 2019, 6 p.m. 1.6 ppb (1) 0.1 ppb (0) 2.0 ppb (2) 2.0 ppb (2) 1.8 ppb (2) N/A 51.0 ppb (39) N/A N/A 13.0 μg/m3 (52) 52.0
 
July 20, 2019, 5 p.m. 1.3 ppb (1) 0.1 ppb (0) 1.6 ppb (1) 1.0 ppb (1) 1.4 ppb (1) N/A 49.0 ppb (38) N/A N/A 9.0 μg/m3 (38) 38.0
 
July 20, 2019, 4 p.m. 1.5 ppb (1) 0.1 ppb (0) 1.7 ppb (2) 2.0 ppb (2) 1.6 ppb (1) N/A 48.0 ppb (37) N/A N/A 10.0 μg/m3 (42) 42.0
 
July 20, 2019, 3 p.m. 1.7 ppb (2) 0.1 ppb (0) 2.0 ppb (2) 2.0 ppb (2) 1.8 ppb (2) N/A 47.0 ppb (36) N/A N/A 11.0 μg/m3 (46) 46.0
 
July 20, 2019, 2 p.m. 2.0 ppb (2) 0.2 ppb (0) 2.5 ppb (2) 2.0 ppb (2) 2.2 ppb (2) N/A 46.0 ppb (35) N/A N/A 13.0 μg/m3 (52) 52.0
 
July 20, 2019, 1 p.m. 1.5 ppb (1) 0.1 ppb (0) 1.9 ppb (2) 1.0 ppb (1) 1.6 ppb (1) N/A 42.0 ppb (32) N/A N/A 10.0 μg/m3 (42) 42.0
 
July 20, 2019, noon 2.3 ppb (2) 0.3 ppb (0) 2.6 ppb (2) 2.0 ppb (2) 2.2 ppb (2) N/A 36.0 ppb (28) N/A N/A 12.0 μg/m3 (50) 50.0
 
July 20, 2019, 11 a.m. 3.8 ppb (4) 0.5 ppb (0) 4.1 ppb (4) 3.0 ppb (3) 3.5 ppb (3) N/A 29.0 ppb (22) N/A N/A 13.0 μg/m3 (52) 52.0
 
July 20, 2019, 10 a.m. 8.2 ppb (8) 0.6 ppb (1) 8.5 ppb (8) 8.0 ppb (7) 7.9 ppb (7) N/A 19.0 ppb (15) N/A N/A 19.0 μg/m3 (65) 65.0
 
July 20, 2019, 9 a.m. 8.6 ppb (8) 0.1 ppb (0) 9.0 ppb (8) 9.0 ppb (8) 8.9 ppb (8) N/A 18.0 ppb (14) N/A N/A 15.0 μg/m3 (56) 56.0
 
July 20, 2019, 8 a.m. 5.2 ppb (5) 0.1 ppb (0) 5.7 ppb (5) 5.0 ppb (5) 5.5 ppb (5) N/A 25.0 ppb (19) N/A N/A 19.0 μg/m3 (65) 65.0
 
July 20, 2019, 7 a.m. 5.7 ppb (5) 0.1 ppb (0) 5.8 ppb (5) 6.0 ppb (6) 5.7 ppb (5) N/A 23.0 ppb (18) N/A N/A 16.0 μg/m3 (59) 59.0
 
July 20, 2019, 6 a.m. 5.6 ppb (5) 0.0 ppb (0) 5.9 ppb (5) 6.0 ppb (6) 5.8 ppb (5) N/A 30.0 ppb (23) N/A N/A 17.0 μg/m3 (61) 61.0
 
July 20, 2019, 5 a.m. 5.3 ppb (5) 0.0 ppb (0) 5.6 ppb (5) 5.0 ppb (5) 5.5 ppb (5) N/A 38.0 ppb (29) N/A N/A 15.0 μg/m3 (56) 56.0
 
July 20, 2019, 4 a.m. 5.6 ppb (5) 0.0 ppb (0) 5.9 ppb (5) 6.0 ppb (6) 5.8 ppb (5) N/A 42.0 ppb (32) N/A N/A 11.0 μg/m3 (46) 46.0
 
July 20, 2019, 3 a.m. 8.1 ppb (8) 0.0 ppb (0) 8.8 ppb (8) 8.0 ppb (7) 8.7 ppb (8) N/A 50.0 ppb (38) N/A N/A 18.0 μg/m3 (63) 63.0
 
July 20, 2019, 2 a.m. 6.6 ppb (6) 0.0 ppb (0) 7.1 ppb (7) 7.0 ppb (6) 7.0 ppb (6) N/A 65.0 ppb (50) N/A N/A 16.0 μg/m3 (59) 59.0
 
July 20, 2019, 1 a.m. 8.5 ppb (8) 0.0 ppb (0) 9.2 ppb (9) 9.0 ppb (8) 9.1 ppb (8) N/A 69.0 ppb (53) N/A N/A 19.0 μg/m3 (65) 65.0
 
July 20, 2019, midnight 6.1 ppb (6) 0.0 ppb (0) 6.5 ppb (6) 6.0 ppb (6) 6.4 ppb (6) N/A 72.0 ppb (56) N/A N/A 13.0 μg/m3 (52) 56.0
 
July 19, 2019, 11 p.m. 4.9 ppb (5) 0.0 ppb (0) 5.2 ppb (5) 5.0 ppb (5) 5.0 ppb (5) N/A 71.0 ppb (55) N/A N/A 11.0 μg/m3 (46) 55.0
 
July 19, 2019, 10 p.m. 6.2 ppb (6) 0.3 ppb (0) 6.6 ppb (6) 6.0 ppb (6) 6.1 ppb (6) N/A 59.0 ppb (45) N/A N/A 10.0 μg/m3 (42) 45.0
 
July 19, 2019, 9 p.m. 4.6 ppb (4) 0.3 ppb (0) 4.9 ppb (5) 4.0 ppb (4) 4.5 ppb (4) N/A 55.0 ppb (42) N/A N/A 9.0 μg/m3 (38) 42.0
 
July 19, 2019, 8 p.m. 4.1 ppb (4) 0.3 ppb (0) 4.5 ppb (4) 4.0 ppb (4) 4.0 ppb (4) N/A 50.0 ppb (38) N/A N/A 10.0 μg/m3 (42) 42.0
 
July 19, 2019, 7 p.m. 3.7 ppb (3) 0.2 ppb (0) 4.3 ppb (4) 4.0 ppb (4) 4.0 ppb (4) N/A 52.0 ppb (40) N/A N/A 9.0 μg/m3 (38) 40.0
 
July 19, 2019, 6 p.m. 3.5 ppb (3) 0.2 ppb (0) 4.5 ppb (4) 3.0 ppb (3) 4.2 ppb (4) 0.0 ppb (0) 50.0 ppb (38) 0.2 ppb (2) N/A N/A 38.0
 
July 19, 2019, 5 p.m. 4.6 ppb (4) 0.5 ppb (0) 4.6 ppb (4) 4.0 ppb (4) 4.2 ppb (4) 0.0 ppb (0) 56.0 ppb (43) 0.36 ppb (4) N/A 6.0 μg/m3 (25) 43.0
 
July 19, 2019, 4 p.m. 5.5 ppb (5) 0.5 ppb (0) 6.0 ppb (6) 5.0 ppb (5) 5.3 ppb (5) 0.0 ppb (0) 55.0 ppb (42) 0.23 ppb (3) N/A 7.0 μg/m3 (29) 42.0
 
July 19, 2019, 3 p.m. 11.3 ppb (10) 2.6 ppb (2) 11.6 ppb (11) 9.0 ppb (8) 9.0 ppb (8) 0.0 ppb (0) 41.0 ppb (32) 0.26 ppb (3) N/A 6.0 μg/m3 (25) 32.0
 
July 19, 2019, 2 p.m. 14.5 ppb (13) 4.9 ppb (5) 14.5 ppb (13) 10.0 ppb (9) 9.6 ppb (9) 0.0 ppb (0) 27.0 ppb (21) 0.27 ppb (3) N/A 8.0 μg/m3 (33) 33.0
 
July 19, 2019, 1 p.m. 10.7 ppb (10) 3.7 ppb (3) 10.5 ppb (10) 7.0 ppb (6) 6.9 ppb (6) 0.0 ppb (0) 19.0 ppb (15) 0.22 ppb (2) N/A 11.0 μg/m3 (46) 46.0
 
July 19, 2019, noon 11.1 ppb (10) 2.9 ppb (3) 10.8 ppb (10) 8.0 ppb (7) 7.8 ppb (7) 0.0 ppb (0) 16.0 ppb (12) 0.22 ppb (2) N/A 8.0 μg/m3 (33) 33.0
 
July 19, 2019, 11 a.m. 7.4 ppb (7) 0.9 ppb (1) 7.1 ppb (7) 7.0 ppb (6) 6.0 ppb (6) 0.0 ppb (0) 18.0 ppb (14) 0.2 ppb (2) N/A 8.0 μg/m3 (33) 33.0
 
July 19, 2019, 10 a.m. 7.0 ppb (6) 0.4 ppb (0) 6.7 ppb (6) 7.0 ppb (6) 6.1 ppb (6) 0.0 ppb (0) 18.0 ppb (14) 0.19 ppb (2) N/A 6.0 μg/m3 (25) 25.0
 
July 19, 2019, 9 a.m. 4.4 ppb (4) 0.0 ppb (0) 4.1 ppb (4) 4.0 ppb (4) 3.9 ppb (4) 0.0 ppb (0) 19.0 ppb (15) 0.16 ppb (2) N/A 6.0 μg/m3 (25) 25.0
 
July 19, 2019, 8 a.m. 2.4 ppb (2) 0.0 ppb (0) 2.0 ppb (2) 3.0 ppb (3) 1.9 ppb (2) 0.0 ppb (0) 22.0 ppb (17) 0.14 ppb (2) N/A 5.0 μg/m3 (21) 21.0
 
July 19, 2019, 7 a.m. N/A N/A 2.2 ppb (2) N/A 2.1 ppb (2) N/A 20.0 ppb (15) N/A N/A 6.0 μg/m3 (25) 25.0
 
July 19, 2019, 6 a.m. N/A N/A 1.9 ppb (2) N/A 1.8 ppb (2) N/A 19.0 ppb (15) N/A N/A 8.0 μg/m3 (33) 33.0
 
July 19, 2019, 5 a.m. N/A N/A 1.4 ppb (1) N/A 1.3 ppb (1) N/A 18.0 ppb (14) N/A N/A 8.0 μg/m3 (33) 33.0
 
July 19, 2019, 4 a.m. 3.2 ppb (3) 0.0 ppb (0) N/A 3.0 ppb (3) N/A 0.0 ppb (0) 17.0 ppb (13) 0.16 ppb (2) N/A 7.0 μg/m3 (29) 29.0
 
July 19, 2019, 3 a.m. 2.4 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 18.0 ppb (14) 0.16 ppb (2) N/A 8.0 μg/m3 (33) 33.0
 
July 19, 2019, 2 a.m. 2.1 ppb (2) 0.0 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 19.0 ppb (15) 0.16 ppb (2) N/A 7.0 μg/m3 (29) 29.0
 
July 19, 2019, 1 a.m. 2.6 ppb (2) 0.0 ppb (0) 2.5 ppb (2) 3.0 ppb (3) 2.4 ppb (2) 0.0 ppb (0) 20.0 ppb (15) 0.16 ppb (2) N/A 5.0 μg/m3 (21) 21.0
 
July 19, 2019, midnight 2.4 ppb (2) 0.0 ppb (0) 2.4 ppb (2) 3.0 ppb (3) 2.2 ppb (2) 0.0 ppb (0) 22.0 ppb (17) 0.16 ppb (2) N/A 9.0 μg/m3 (38) 38.0
 
July 18, 2019, 11 p.m. 2.4 ppb (2) 0.1 ppb (0) 2.4 ppb (2) 2.0 ppb (2) 2.2 ppb (2) 0.0 ppb (0) 23.0 ppb (18) 0.16 ppb (2) N/A 9.0 μg/m3 (38) 38.0
 
July 18, 2019, 10 p.m. 1.7 ppb (2) 0.1 ppb (0) 1.8 ppb (2) 2.0 ppb (2) 1.6 ppb (1) 0.0 ppb (0) 23.0 ppb (18) 0.16 ppb (2) N/A 10.0 μg/m3 (42) 42.0
 
July 18, 2019, 9 p.m. 1.4 ppb (1) 0.1 ppb (0) 1.4 ppb (1) 1.0 ppb (1) 1.2 ppb (1) 0.0 ppb (0) 26.0 ppb (20) 0.16 ppb (2) N/A 9.0 μg/m3 (38) 38.0
 
July 18, 2019, 8 p.m. 1.2 ppb (1) 0.1 ppb (0) 1.3 ppb (1) 1.0 ppb (1) 1.0 ppb (1) 0.0 ppb (0) 27.0 ppb (21) 0.16 ppb (2) N/A 6.0 μg/m3 (25) 25.0
 
July 18, 2019, 7 p.m. 1.3 ppb (1) 0.2 ppb (0) 1.4 ppb (1) 1.0 ppb (1) 1.0 ppb (1) 0.0 ppb (0) 27.0 ppb (21) 0.16 ppb (2) N/A 7.0 μg/m3 (29) 29.0
 
July 18, 2019, 6 p.m. 1.3 ppb (1) 0.2 ppb (0) 1.4 ppb (1) 1.0 ppb (1) 1.1 ppb (1) 0.0 ppb (0) 27.0 ppb (21) 0.16 ppb (2) N/A 8.0 μg/m3 (33) 33.0
 
July 18, 2019, 5 p.m. 1.4 ppb (1) 0.2 ppb (0) 1.5 ppb (1) 1.0 ppb (1) 1.1 ppb (1) 0.0 ppb (0) 27.0 ppb (21) 0.15 ppb (2) N/A 13.0 μg/m3 (52) 52.0
 
July 18, 2019, 4 p.m. 1.9 ppb (2) 0.3 ppb (0) 1.9 ppb (2) 2.0 ppb (2) 1.5 ppb (1) 0.0 ppb (0) 25.0 ppb (19) 0.16 ppb (2) N/A 6.0 μg/m3 (25) 25.0
 
July 18, 2019, 3 p.m. 1.5 ppb (1) 0.2 ppb (0) 1.5 ppb (1) 1.0 ppb (1) 1.1 ppb (1) 0.0 ppb (0) 25.0 ppb (19) 0.15 ppb (2) N/A 9.0 μg/m3 (38) 38.0
 
July 18, 2019, 2 p.m. 2.1 ppb (2) 0.4 ppb (0) 2.1 ppb (2) 2.0 ppb (2) 1.6 ppb (1) 0.0 ppb (0) 24.0 ppb (18) 0.15 ppb (2) N/A 6.0 μg/m3 (25) 25.0
 
July 18, 2019, 1 p.m. 3.8 ppb (4) 0.7 ppb (1) 3.8 ppb (4) 3.0 ppb (3) 3.0 ppb (3) 0.0 ppb (0) 20.0 ppb (15) 0.16 ppb (2) N/A 8.0 μg/m3 (33) 33.0
 
July 18, 2019, noon 6.6 ppb (6) 0.6 ppb (1) 6.6 ppb (6) 6.0 ppb (6) 5.9 ppb (5) 0.0 ppb (0) 22.0 ppb (17) 0.18 ppb (2) N/A 7.0 μg/m3 (29) 29.0
 
July 18, 2019, 11 a.m. 8.7 ppb (8) 1.5 ppb (1) 34.4 ppb (32) 7.0 ppb (6) 15.2 ppb (14) 0.0 ppb (0) 23.0 ppb (18) 0.16 ppb (2) N/A 7.0 μg/m3 (29) 32.0
 
July 18, 2019, 10 a.m. 9.4 ppb (9) 0.8 ppb (1) 9.5 ppb (9) 9.0 ppb (8) 8.7 ppb (8) 0.0 ppb (0) 16.0 ppb (12) 0.2 ppb (2) N/A 7.0 μg/m3 (29) 29.0
 
July 18, 2019, 9 a.m. 9.5 ppb (9) 0.3 ppb (0) 9.7 ppb (9) 9.0 ppb (8) 9.4 ppb (9) 0.0 ppb (0) 12.0 ppb (9) 0.19 ppb (2) N/A 8.0 μg/m3 (33) 33.0
 
July 18, 2019, 8 a.m. 8.8 ppb (8) 0.1 ppb (0) 8.7 ppb (8) 9.0 ppb (8) 8.5 ppb (8) 0.0 ppb (0) N/A 0.18 ppb (2) N/A 8.0 μg/m3 (33) 33.0
 
July 18, 2019, 7 a.m. 6.8 ppb (6) 0.0 ppb (0) 7.2 ppb (7) 7.0 ppb (6) 7.0 ppb (6) 0.0 ppb (0) N/A 0.16 ppb (2) N/A 7.0 μg/m3 (29) 29.0
 
July 18, 2019, 6 a.m. 4.5 ppb (4) 0.1 ppb (0) 4.3 ppb (4) 5.0 ppb (5) 4.1 ppb (4) 0.0 ppb (0) 21.0 ppb (16) 0.15 ppb (2) N/A 5.0 μg/m3 (21) 21.0
 
July 18, 2019, 5 a.m. 4.5 ppb (4) 0.0 ppb (0) 4.4 ppb (4) 5.0 ppb (5) 4.2 ppb (4) 0.0 ppb (0) 27.0 ppb (21) 0.14 ppb (2) N/A 6.0 μg/m3 (25) 25.0
 
July 18, 2019, 4 a.m. 2.6 ppb (2) 0.0 ppb (0) 2.6 ppb (2) 3.0 ppb (3) 2.5 ppb (2) 0.0 ppb (0) 35.0 ppb (27) 0.13 ppb (1) N/A 9.0 μg/m3 (38) 38.0
 
July 18, 2019, 3 a.m. 6.4 ppb (6) 0.1 ppb (0) 6.7 ppb (6) 6.0 ppb (6) 6.5 ppb (6) 0.0 ppb (0) 28.0 ppb (22) 0.17 ppb (2) N/A 5.0 μg/m3 (21) 22.0
 
July 18, 2019, 2 a.m. 6.2 ppb (6) 0.0 ppb (0) 6.4 ppb (6) 6.0 ppb (6) 6.3 ppb (6) 0.0 ppb (0) 33.0 ppb (25) 0.16 ppb (2) N/A 8.0 μg/m3 (33) 33.0
 
July 18, 2019, 1 a.m. 7.1 ppb (7) 0.0 ppb (0) 7.3 ppb (7) 7.0 ppb (6) 7.2 ppb (7) 0.0 ppb (0) 28.0 ppb (22) 0.17 ppb (2) N/A 10.0 μg/m3 (42) 42.0
 
July 18, 2019, midnight 5.9 ppb (5) 0.1 ppb (0) 5.6 ppb (5) 6.0 ppb (6) 5.5 ppb (5) 0.0 ppb (0) 30.0 ppb (23) 0.15 ppb (2) N/A 5.0 μg/m3 (21) 23.0
 
July 17, 2019, 11 p.m. 4.2 ppb (4) 0.0 ppb (0) 4.3 ppb (4) 4.0 ppb (4) 4.2 ppb (4) 0.0 ppb (0) 37.0 ppb (28) 0.13 ppb (1) N/A 5.0 μg/m3 (21) 28.0
 
July 17, 2019, 10 p.m. 3.3 ppb (3) 0.0 ppb (0) 3.4 ppb (3) 3.0 ppb (3) 3.2 ppb (3) 0.0 ppb (0) 45.0 ppb (35) 0.12 ppb (1) N/A 5.0 μg/m3 (21) 35.0
 
July 17, 2019, 9 p.m. 4.0 ppb (4) 0.0 ppb (0) 4.5 ppb (4) 4.0 ppb (4) 4.4 ppb (4) 0.0 ppb (0) 62.0 ppb (48) 0.19 ppb (2) N/A 19.0 μg/m3 (65) 65.0
 
July 17, 2019, 8 p.m. 3.4 ppb (3) 0.1 ppb (0) 3.8 ppb (4) 3.0 ppb (3) 3.6 ppb (3) 0.0 ppb (0) 68.0 ppb (52) 0.19 ppb (2) N/A 13.0 μg/m3 (52) 52.0
 
July 17, 2019, 7 p.m. 3.7 ppb (3) 0.2 ppb (0) 4.1 ppb (4) 4.0 ppb (4) 3.8 ppb (4) 0.0 ppb (0) 60.0 ppb (46) 0.19 ppb (2) N/A 16.0 μg/m3 (59) 59.0
 
July 17, 2019, 6 p.m. 2.9 ppb (3) 0.1 ppb (0) 3.3 ppb (3) 3.0 ppb (3) 3.0 ppb (3) 0.0 ppb (0) 55.0 ppb (42) 0.18 ppb (2) N/A 16.0 μg/m3 (59) 59.0
 
July 17, 2019, 5 p.m. 3.0 ppb (3) 0.2 ppb (0) 3.4 ppb (3) 3.0 ppb (3) 3.0 ppb (3) 0.0 ppb (0) 53.0 ppb (41) 0.17 ppb (2) N/A 16.0 μg/m3 (59) 59.0
 
July 17, 2019, 4 p.m. 3.8 ppb (4) 0.2 ppb (0) 4.4 ppb (4) 4.0 ppb (4) 4.0 ppb (4) 0.0 ppb (0) 56.0 ppb (43) 0.18 ppb (2) N/A 14.0 μg/m3 (54) 54.0
 
July 17, 2019, 3 p.m. 4.5 ppb (4) 0.3 ppb (0) 4.8 ppb (4) 4.0 ppb (4) 4.4 ppb (4) 0.0 ppb (0) 52.0 ppb (40) 0.2 ppb (2) N/A 13.0 μg/m3 (52) 52.0
 
July 17, 2019, 2 p.m. 5.9 ppb (5) 0.5 ppb (0) 6.1 ppb (6) 5.0 ppb (5) 5.5 ppb (5) 0.0 ppb (0) 48.0 ppb (37) 0.2 ppb (2) N/A 14.0 μg/m3 (54) 54.0
 
July 17, 2019, 1 p.m. 7.7 ppb (7) 0.7 ppb (1) 7.9 ppb (7) 7.0 ppb (6) 7.1 ppb (7) 0.0 ppb (0) 41.0 ppb (32) 0.23 ppb (3) N/A 16.0 μg/m3 (59) 59.0
 
July 17, 2019, noon 8.0 ppb (7) 0.6 ppb (1) 8.2 ppb (8) 7.0 ppb (6) 7.5 ppb (7) 0.0 ppb (0) 38.0 ppb (29) 0.23 ppb (3) N/A 14.0 μg/m3 (54) 54.0
 
July 17, 2019, 11 a.m. 8.2 ppb (8) 0.7 ppb (1) 8.2 ppb (8) 8.0 ppb (7) 7.5 ppb (7) 0.0 ppb (0) 37.0 ppb (28) 0.22 ppb (2) N/A 13.0 μg/m3 (52) 52.0
 
July 17, 2019, 10 a.m. 8.6 ppb (8) 0.4 ppb (0) 8.6 ppb (8) 8.0 ppb (7) 8.2 ppb (8) 0.0 ppb (0) 38.0 ppb (29) 0.21 ppb (2) N/A 12.0 μg/m3 (50) 50.0
 
July 17, 2019, 9 a.m. 6.8 ppb (6) 0.0 ppb (0) 6.7 ppb (6) 7.0 ppb (6) 6.6 ppb (6) 0.0 ppb (0) 39.0 ppb (30) 0.2 ppb (2) N/A 13.0 μg/m3 (52) 52.0
 
July 17, 2019, 8 a.m. 4.0 ppb (4) 0.0 ppb (0) 4.0 ppb (4) 4.0 ppb (4) 3.9 ppb (4) 0.0 ppb (0) 48.0 ppb (37) 0.17 ppb (2) N/A 12.0 μg/m3 (50) 50.0
 
July 17, 2019, 7 a.m. 2.7 ppb (3) 0.0 ppb (0) 2.7 ppb (3) 3.0 ppb (3) 2.6 ppb (2) 0.0 ppb (0) 54.0 ppb (42) 0.17 ppb (2) N/A 14.0 μg/m3 (54) 54.0
 
July 17, 2019, 6 a.m. 2.7 ppb (3) 0.0 ppb (0) 2.7 ppb (3) 3.0 ppb (3) 2.6 ppb (2) 0.0 ppb (0) 56.0 ppb (43) 0.17 ppb (2) N/A 13.0 μg/m3 (52) 52.0
 
July 17, 2019, 5 a.m. 2.6 ppb (2) 0.0 ppb (0) 2.5 ppb (2) 3.0 ppb (3) 2.4 ppb (2) 0.0 ppb (0) 57.0 ppb (44) 0.17 ppb (2) N/A 14.0 μg/m3 (54) 54.0
 
July 17, 2019, 4 a.m. 3.0 ppb (3) 0.0 ppb (0) 2.8 ppb (3) 3.0 ppb (3) 2.7 ppb (3) 0.0 ppb (0) 58.0 ppb (45) 0.18 ppb (2) N/A 12.0 μg/m3 (50) 50.0
 
July 17, 2019, 3 a.m. 3.4 ppb (3) 0.0 ppb (0) 3.2 ppb (3) 4.0 ppb (4) 3.1 ppb (3) 0.0 ppb (0) 59.0 ppb (45) 0.19 ppb (2) N/A 11.0 μg/m3 (46) 46.0
 
July 17, 2019, 2 a.m. 4.2 ppb (4) 0.0 ppb (0) 4.1 ppb (4) 4.0 ppb (4) 4.0 ppb (4) 0.0 ppb (0) 63.0 ppb (48) 0.22 ppb (2) N/A 14.0 μg/m3 (54) 54.0
 
July 17, 2019, 1 a.m. 5.2 ppb (5) 0.0 ppb (0) 5.1 ppb (5) 5.0 ppb (5) 5.0 ppb (5) 0.0 ppb (0) 61.0 ppb (47) 0.24 ppb (3) N/A 11.0 μg/m3 (46) 47.0
 
July 17, 2019, midnight 5.5 ppb (5) 0.0 ppb (0) 5.4 ppb (5) 6.0 ppb (6) 5.2 ppb (5) 0.0 ppb (0) 54.0 ppb (42) 0.23 ppb (3) N/A 12.0 μg/m3 (50) 50.0
 
July 16, 2019, 11 p.m. 3.9 ppb (4) 0.0 ppb (0) 3.8 ppb (4) 4.0 ppb (4) 3.7 ppb (3) 0.0 ppb (0) 57.0 ppb (44) 0.22 ppb (2) N/A 11.0 μg/m3 (46) 46.0
 
July 16, 2019, 10 p.m. 3.6 ppb (3) 0.1 ppb (0) 3.6 ppb (3) 4.0 ppb (4) 3.4 ppb (3) 0.0 ppb (0) 58.0 ppb (45) 0.21 ppb (2) N/A 8.0 μg/m3 (33) 45.0
 
July 16, 2019, 9 p.m. 3.3 ppb (3) 0.2 ppb (0) 3.4 ppb (3) 3.0 ppb (3) 3.1 ppb (3) 0.0 ppb (0) 53.0 ppb (41) 0.19 ppb (2) N/A 10.0 μg/m3 (42) 42.0
 
July 16, 2019, 8 p.m. 2.9 ppb (3) 0.2 ppb (0) 2.5 ppb (2) 3.0 ppb (3) 2.3 ppb (2) 0.0 ppb (0) 50.0 ppb (38) 0.18 ppb (2) N/A 7.0 μg/m3 (29) 38.0
 
July 16, 2019, 7 p.m. 2.7 ppb (3) 0.2 ppb (0) 2.7 ppb (3) 3.0 ppb (3) 2.4 ppb (2) 0.0 ppb (0) 50.0 ppb (38) 0.16 ppb (2) N/A 9.0 μg/m3 (38) 38.0
 
July 16, 2019, 6 p.m. 2.4 ppb (2) 0.2 ppb (0) 2.5 ppb (2) 2.0 ppb (2) 2.2 ppb (2) 0.0 ppb (0) 48.0 ppb (37) 0.16 ppb (2) N/A 5.0 μg/m3 (21) 37.0
 
July 16, 2019, 5 p.m. 2.5 ppb (2) 0.2 ppb (0) 2.6 ppb (2) 2.0 ppb (2) 2.2 ppb (2) 0.0 ppb (0) 46.0 ppb (35) 0.16 ppb (2) N/A N/A 35.0
 
July 16, 2019, 4 p.m. 3.0 ppb (3) 0.3 ppb (0) 3.0 ppb (3) 3.0 ppb (3) 2.6 ppb (2) 0.0 ppb (0) 45.0 ppb (35) 0.15 ppb (2) N/A 11.0 μg/m3 (46) 46.0
 
July 16, 2019, 3 p.m. 4.1 ppb (4) 0.6 ppb (1) 4.0 ppb (4) 4.0 ppb (4) 3.3 ppb (3) 0.0 ppb (0) 41.0 ppb (32) 0.16 ppb (2) N/A 15.0 μg/m3 (56) 56.0
 
July 16, 2019, 2 p.m. 8.3 ppb (8) 1.7 ppb (2) 7.9 ppb (7) 7.0 ppb (6) 6.2 ppb (6) 0.0 ppb (0) 36.0 ppb (28) 0.19 ppb (2) N/A 17.0 μg/m3 (61) 61.0
 
July 16, 2019, 1 p.m. 9.9 ppb (9) 2.6 ppb (2) 9.3 ppb (9) 7.0 ppb (6) 6.7 ppb (6) 1.0 ppb (1) 30.0 ppb (23) 0.27 ppb (3) N/A N/A 23.0
 
July 16, 2019, noon 13.2 ppb (12) 4.4 ppb (4) 12.4 ppb (11) 9.0 ppb (8) 8.1 ppb (8) 1.0 ppb (1) 20.0 ppb (15) 0.3 ppb (3) N/A N/A 15.0
 
July 16, 2019, 11 a.m. 24.2 ppb (22) 11.4 ppb (11) 23.4 ppb (22) 13.0 ppb (12) 12.5 ppb (12) 0.0 ppb (0) 9.0 ppb (7) 0.32 ppb (4) N/A N/A 22.0
 
July 16, 2019, 10 a.m. 18.3 ppb (17) 9.0 ppb (8) 17.2 ppb (16) 9.0 ppb (8) 9.4 ppb (9) 0.0 ppb (0) 4.0 ppb (3) 0.41 ppb (5) N/A N/A 17.0