AQSQID: 250051004

Site Name: Fall River

Location: Fall River, MA

Reporting: True, Located: True

Current AQI: 32.0

Fall River MA, US: 41.6833, -71.169701

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
May 25, 2019, 7 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 42.0 ppb (32) N/A N/A 3.0 μg/m3 (12) 32.0
 
May 25, 2019, 6 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 43.0 ppb (33) N/A N/A 3.0 μg/m3 (12) 33.0
 
May 25, 2019, 5 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 45.0 ppb (35) N/A N/A 4.0 μg/m3 (17) 35.0
 
May 25, 2019, 4 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 45.0 ppb (35) N/A N/A 6.0 μg/m3 (25) 35.0
 
May 25, 2019, 3 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 42.0 ppb (32) N/A N/A 6.0 μg/m3 (25) 32.0
 
May 25, 2019, 2 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 37.0 ppb (28) N/A N/A 2.0 μg/m3 (8) 28.0
 
May 25, 2019, 1 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 31.0 ppb (24) N/A N/A 3.0 μg/m3 (12) 24.0
 
May 25, 2019, noon N/A N/A N/A N/A N/A 1.0 ppb (1) 28.0 ppb (22) N/A N/A 2.0 μg/m3 (8) 22.0
 
May 25, 2019, 11 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 25.0 ppb (19) N/A N/A 3.0 μg/m3 (12) 19.0
 
May 25, 2019, 10 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 18.0 ppb (14) N/A N/A 1.0 μg/m3 (4) 14.0
 
May 25, 2019, 9 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 19.0 ppb (15) N/A N/A 3.0 μg/m3 (12) 15.0
 
May 25, 2019, 8 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 2.0 μg/m3 (8) 8.0
 
May 25, 2019, 7 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 25.0 ppb (19) N/A N/A 0.0 μg/m3 (0) 19.0
 
May 25, 2019, 6 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 27.0 ppb (21) N/A N/A -1.0 μg/m3 (0) 21.0
 
May 25, 2019, 5 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 29.0 ppb (22) N/A N/A 0.0 μg/m3 (0) 22.0
 
May 25, 2019, 4 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 33.0 ppb (25) N/A N/A 3.0 μg/m3 (12) 25.0
 
May 25, 2019, 3 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 35.0 ppb (27) N/A N/A 0.0 μg/m3 (0) 27.0
 
May 25, 2019, 2 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 37.0 ppb (28) N/A N/A 2.0 μg/m3 (8) 28.0
 
May 25, 2019, 1 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 39.0 ppb (30) N/A N/A 6.0 μg/m3 (25) 30.0
 
May 25, 2019, midnight N/A N/A N/A N/A N/A 1.0 ppb (1) 40.0 ppb (31) N/A N/A 6.0 μg/m3 (25) 31.0
 
May 24, 2019, 11 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 36.0 ppb (28) N/A N/A 0.0 μg/m3 (0) 28.0
 
May 24, 2019, 10 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 32.0 ppb (25) N/A N/A 0.0 μg/m3 (0) 25.0
 
May 24, 2019, 9 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 30.0 ppb (23) N/A N/A 0.0 μg/m3 (0) 23.0
 
May 24, 2019, 8 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 29.0 ppb (22) N/A N/A 1.0 μg/m3 (4) 22.0
 
May 24, 2019, 7 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 40.0 ppb (31) N/A N/A 3.0 μg/m3 (12) 31.0
 
May 24, 2019, 6 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 49.0 ppb (38) N/A N/A 2.0 μg/m3 (8) 38.0
 
May 24, 2019, 5 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 50.0 ppb (38) N/A N/A 3.0 μg/m3 (12) 38.0
 
May 24, 2019, 4 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 42.0 ppb (32) N/A N/A 2.0 μg/m3 (8) 32.0
 
May 24, 2019, 3 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 42.0 ppb (32) N/A N/A 2.0 μg/m3 (8) 32.0
 
May 24, 2019, 2 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 39.0 ppb (30) N/A N/A 3.0 μg/m3 (12) 30.0
 
May 24, 2019, 1 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 39.0 ppb (30) N/A N/A 1.0 μg/m3 (4) 30.0
 
May 24, 2019, noon N/A N/A N/A N/A N/A 1.0 ppb (1) 39.0 ppb (30) N/A N/A 3.0 μg/m3 (12) 30.0
 
May 24, 2019, 11 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 38.0 ppb (29) N/A N/A 2.0 μg/m3 (8) 29.0
 
May 24, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) N/A N/A 3.0 μg/m3 (12) 28.0
 
May 24, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) N/A N/A 3.0 μg/m3 (12) 27.0
 
May 24, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (27) N/A N/A 4.0 μg/m3 (17) 27.0
 
May 24, 2019, 7 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 34.0 ppb (26) N/A N/A 4.0 μg/m3 (17) 26.0
 
May 24, 2019, 6 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 36.0 ppb (28) N/A N/A 3.0 μg/m3 (12) 28.0
 
May 24, 2019, 5 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 37.0 ppb (28) N/A N/A 6.0 μg/m3 (25) 28.0
 
May 24, 2019, 4 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 40.0 ppb (31) N/A N/A 8.0 μg/m3 (33) 33.0
 
May 24, 2019, 3 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 41.0 ppb (32) N/A N/A 6.0 μg/m3 (25) 32.0
 
May 24, 2019, 2 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 40.0 ppb (31) N/A N/A 5.0 μg/m3 (21) 31.0
 
May 24, 2019, 1 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 40.0 ppb (31) N/A N/A 2.0 μg/m3 (8) 31.0
 
May 24, 2019, midnight N/A N/A N/A N/A N/A 1.0 ppb (1) 40.0 ppb (31) N/A N/A 5.0 μg/m3 (21) 31.0
 
May 23, 2019, 11 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 39.0 ppb (30) N/A N/A 4.0 μg/m3 (17) 30.0
 
May 23, 2019, 10 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 39.0 ppb (30) N/A N/A 4.0 μg/m3 (17) 30.0
 
May 23, 2019, 9 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 39.0 ppb (30) N/A N/A 3.0 μg/m3 (12) 30.0
 
May 23, 2019, 8 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 39.0 ppb (30) N/A N/A 2.0 μg/m3 (8) 30.0
 
May 23, 2019, 7 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 38.0 ppb (29) N/A N/A 3.0 μg/m3 (12) 29.0
 
May 23, 2019, 6 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 39.0 ppb (30) N/A N/A 0.0 μg/m3 (0) 30.0
 
May 23, 2019, 5 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 39.0 ppb (30) N/A N/A 0.0 μg/m3 (0) 30.0
 
May 23, 2019, 4 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 39.0 ppb (30) N/A N/A 3.0 μg/m3 (12) 30.0
 
May 23, 2019, 3 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 38.0 ppb (29) N/A N/A 2.0 μg/m3 (8) 29.0
 
May 23, 2019, 2 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 35.0 ppb (27) N/A N/A 1.0 μg/m3 (4) 27.0
 
May 23, 2019, 1 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 34.0 ppb (26) N/A N/A -3.0 μg/m3 (0) 26.0
 
May 23, 2019, noon N/A N/A N/A N/A N/A 1.0 ppb (1) 34.0 ppb (26) N/A N/A 0.0 μg/m3 (0) 26.0
 
May 23, 2019, 11 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 35.0 ppb (27) N/A N/A 1.0 μg/m3 (4) 27.0
 
May 23, 2019, 10 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 35.0 ppb (27) N/A N/A 2.0 μg/m3 (8) 27.0
 
May 23, 2019, 9 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 34.0 ppb (26) N/A N/A 2.0 μg/m3 (8) 26.0
 
May 23, 2019, 8 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 32.0 ppb (25) N/A N/A 3.0 μg/m3 (12) 25.0
 
May 23, 2019, 7 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 32.0 ppb (25) N/A N/A 3.0 μg/m3 (12) 25.0
 
May 23, 2019, 6 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 31.0 ppb (24) N/A N/A 0.0 μg/m3 (0) 24.0
 
May 23, 2019, 5 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 31.0 ppb (24) N/A N/A 1.0 μg/m3 (4) 24.0
 
May 23, 2019, 4 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 31.0 ppb (24) N/A N/A 2.0 μg/m3 (8) 24.0
 
May 23, 2019, 3 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 31.0 ppb (24) N/A N/A 2.0 μg/m3 (8) 24.0
 
May 23, 2019, 2 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 29.0 ppb (22) N/A N/A 4.0 μg/m3 (17) 22.0
 
May 23, 2019, 1 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 31.0 ppb (24) N/A N/A 3.0 μg/m3 (12) 24.0
 
May 23, 2019, midnight N/A N/A N/A N/A N/A 1.0 ppb (1) 35.0 ppb (27) N/A N/A 2.0 μg/m3 (8) 27.0
 
May 22, 2019, 11 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 38.0 ppb (29) N/A N/A -1.0 μg/m3 (0) 29.0
 
May 22, 2019, 10 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 41.0 ppb (32) N/A N/A -1.0 μg/m3 (0) 32.0
 
May 22, 2019, 9 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 41.0 ppb (32) N/A N/A 3.0 μg/m3 (12) 32.0
 
May 22, 2019, 8 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 42.0 ppb (32) N/A N/A 3.0 μg/m3 (12) 32.0
 
May 22, 2019, 7 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 46.0 ppb (35) N/A N/A -1.0 μg/m3 (0) 35.0
 
May 22, 2019, 6 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 44.0 ppb (34) N/A N/A -1.0 μg/m3 (0) 34.0
 
May 22, 2019, 5 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 42.0 ppb (32) N/A N/A 0.0 μg/m3 (0) 32.0
 
May 22, 2019, 4 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 40.0 ppb (31) N/A N/A 1.0 μg/m3 (4) 31.0
 
May 22, 2019, 3 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 38.0 ppb (29) N/A N/A 0.0 μg/m3 (0) 29.0
 
May 22, 2019, 2 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 36.0 ppb (28) N/A N/A -4.0 μg/m3 (0) 28.0
 
May 22, 2019, 1 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 35.0 ppb (27) N/A N/A -2.0 μg/m3 (0) 27.0
 
May 22, 2019, noon N/A N/A N/A N/A N/A 1.0 ppb (1) 34.0 ppb (26) N/A N/A 3.0 μg/m3 (12) 26.0
 
May 22, 2019, 11 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 31.0 ppb (24) N/A N/A 4.0 μg/m3 (17) 24.0
 
May 22, 2019, 10 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 27.0 ppb (21) N/A N/A 2.0 μg/m3 (8) 21.0
 
May 22, 2019, 9 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 30.0 ppb (23) N/A N/A 2.0 μg/m3 (8) 23.0
 
May 22, 2019, 8 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 5.0 μg/m3 (21) 21.0
 
May 22, 2019, 7 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 34.0 ppb (26) N/A N/A 4.0 μg/m3 (17) 26.0
 
May 22, 2019, 6 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 36.0 ppb (28) N/A N/A 2.0 μg/m3 (8) 28.0
 
May 22, 2019, 5 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 37.0 ppb (28) N/A N/A 3.0 μg/m3 (12) 28.0
 
May 22, 2019, 4 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 38.0 ppb (29) N/A N/A 4.0 μg/m3 (17) 29.0
 
May 22, 2019, 3 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 40.0 ppb (31) N/A N/A 5.0 μg/m3 (21) 31.0
 
May 22, 2019, 2 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 40.0 ppb (31) N/A N/A 3.0 μg/m3 (12) 31.0
 
May 22, 2019, 1 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 40.0 ppb (31) N/A N/A 4.0 μg/m3 (17) 31.0
 
May 22, 2019, midnight N/A N/A N/A N/A N/A 1.0 ppb (1) 40.0 ppb (31) N/A N/A 3.0 μg/m3 (12) 31.0
 
May 21, 2019, 11 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 40.0 ppb (31) N/A N/A 2.0 μg/m3 (8) 31.0
 
May 21, 2019, 10 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 40.0 ppb (31) N/A N/A 4.0 μg/m3 (17) 31.0
 
May 21, 2019, 9 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 40.0 ppb (31) N/A N/A 3.0 μg/m3 (12) 31.0
 
May 21, 2019, 8 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 38.0 ppb (29) N/A N/A 2.0 μg/m3 (8) 29.0
 
May 21, 2019, 7 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 39.0 ppb (30) N/A N/A 0.0 μg/m3 (0) 30.0
 
May 21, 2019, 6 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 37.0 ppb (28) N/A N/A 2.0 μg/m3 (8) 28.0
 
May 21, 2019, 5 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 35.0 ppb (27) N/A N/A 2.0 μg/m3 (8) 27.0
 
May 21, 2019, 4 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 34.0 ppb (26) N/A N/A N/A 26.0
 
May 21, 2019, 3 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 32.0 ppb (25) N/A N/A -1.0 μg/m3 (0) 25.0
 
May 21, 2019, 2 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 31.0 ppb (24) N/A N/A 1.0 μg/m3 (4) 24.0
 
May 21, 2019, 1 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 27.0 ppb (21) N/A N/A 3.0 μg/m3 (12) 21.0
 
May 21, 2019, noon N/A N/A N/A N/A N/A 1.0 ppb (1) 25.0 ppb (19) N/A N/A 1.0 μg/m3 (4) 19.0
 
May 21, 2019, 11 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 24.0 ppb (18) N/A N/A 0.0 μg/m3 (0) 18.0
 
May 21, 2019, 10 a.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (20) N/A N/A 2.0 μg/m3 (8) 20.0
 
May 21, 2019, 9 a.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (22) N/A N/A 3.0 μg/m3 (12) 22.0
 
May 21, 2019, 8 a.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) N/A N/A 2.0 μg/m3 (8) 24.0
 
May 21, 2019, 7 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 33.0 ppb (25) N/A N/A 5.0 μg/m3 (21) 25.0
 
May 21, 2019, 6 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 32.0 ppb (25) N/A N/A 9.0 μg/m3 (38) 38.0
 
May 21, 2019, 5 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 32.0 ppb (25) N/A N/A 11.0 μg/m3 (46) 46.0
 
May 21, 2019, 4 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 37.0 ppb (28) N/A N/A 12.0 μg/m3 (50) 50.0
 
May 21, 2019, 3 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 40.0 ppb (31) N/A N/A 11.0 μg/m3 (46) 46.0
 
May 21, 2019, 2 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 41.0 ppb (32) N/A N/A 11.0 μg/m3 (46) 46.0
 
May 21, 2019, 1 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 38.0 ppb (29) N/A N/A 12.0 μg/m3 (50) 50.0
 
May 21, 2019, midnight N/A N/A N/A N/A N/A 1.0 ppb (1) 40.0 ppb (31) N/A N/A 14.0 μg/m3 (54) 54.0
 
May 20, 2019, 11 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 46.0 ppb (35) N/A N/A 13.0 μg/m3 (52) 52.0
 
May 20, 2019, 10 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 50.0 ppb (38) N/A N/A 17.0 μg/m3 (61) 61.0
 
May 20, 2019, 9 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 54.0 ppb (42) N/A N/A 17.0 μg/m3 (61) 61.0
 
May 20, 2019, 8 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 62.0 ppb (48) N/A N/A 16.0 μg/m3 (59) 59.0
 
May 20, 2019, 7 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 61.0 ppb (47) N/A N/A 17.0 μg/m3 (61) 61.0
 
May 20, 2019, 6 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 58.0 ppb (45) N/A N/A 21.0 μg/m3 (69) 69.0
 
May 20, 2019, 5 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 51.0 ppb (39) N/A N/A 20.0 μg/m3 (67) 67.0
 
May 20, 2019, 4 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 48.0 ppb (37) N/A N/A 17.0 μg/m3 (61) 61.0
 
May 20, 2019, 3 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 46.0 ppb (35) N/A N/A 15.0 μg/m3 (56) 56.0
 
May 20, 2019, 2 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 41.0 ppb (32) N/A N/A 9.0 μg/m3 (38) 38.0
 
May 20, 2019, 1 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 43.0 ppb (33) N/A N/A 8.0 μg/m3 (33) 33.0
 
May 20, 2019, noon N/A N/A N/A N/A N/A 1.0 ppb (1) 44.0 ppb (34) N/A N/A 6.0 μg/m3 (25) 34.0
 
May 20, 2019, 11 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 46.0 ppb (35) N/A N/A 7.0 μg/m3 (29) 35.0
 
May 20, 2019, 10 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 48.0 ppb (37) N/A N/A 8.0 μg/m3 (33) 37.0
 
May 20, 2019, 9 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 46.0 ppb (35) N/A N/A 10.0 μg/m3 (42) 42.0
 
May 20, 2019, 8 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 43.0 ppb (33) N/A N/A 9.0 μg/m3 (38) 38.0
 
May 20, 2019, 7 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 45.0 ppb (35) N/A N/A 10.0 μg/m3 (42) 42.0
 
May 20, 2019, 6 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 47.0 ppb (36) N/A N/A 7.0 μg/m3 (29) 36.0
 
May 20, 2019, 5 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 45.0 ppb (35) N/A N/A 7.0 μg/m3 (29) 35.0
 
May 20, 2019, 4 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 43.0 ppb (33) N/A N/A 6.0 μg/m3 (25) 33.0
 
May 20, 2019, 3 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 42.0 ppb (32) N/A N/A 5.0 μg/m3 (21) 32.0
 
May 20, 2019, 2 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 40.0 ppb (31) N/A N/A 3.0 μg/m3 (12) 31.0
 
May 20, 2019, 1 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 39.0 ppb (30) N/A N/A 5.0 μg/m3 (21) 30.0
 
May 20, 2019, midnight N/A N/A N/A N/A N/A 1.0 ppb (1) 38.0 ppb (29) N/A N/A 4.0 μg/m3 (17) 29.0
 
May 19, 2019, 11 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 37.0 ppb (28) N/A N/A 4.0 μg/m3 (17) 28.0
 
May 19, 2019, 10 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 37.0 ppb (28) N/A N/A 4.0 μg/m3 (17) 28.0
 
May 19, 2019, 9 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 37.0 ppb (28) N/A N/A 3.0 μg/m3 (12) 28.0
 
May 19, 2019, 8 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 37.0 ppb (28) N/A N/A 5.0 μg/m3 (21) 28.0
 
May 19, 2019, 7 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 40.0 ppb (31) N/A N/A 5.0 μg/m3 (21) 31.0
 
May 19, 2019, 6 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 41.0 ppb (32) N/A N/A 3.0 μg/m3 (12) 32.0
 
May 19, 2019, 5 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 40.0 ppb (31) N/A N/A 4.0 μg/m3 (17) 31.0
 
May 19, 2019, 4 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 39.0 ppb (30) N/A N/A 5.0 μg/m3 (21) 30.0
 
May 19, 2019, 3 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 39.0 ppb (30) N/A N/A 3.0 μg/m3 (12) 30.0
 
May 19, 2019, 2 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 41.0 ppb (32) N/A N/A 4.0 μg/m3 (17) 32.0
 
May 19, 2019, 1 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 41.0 ppb (32) N/A N/A 4.0 μg/m3 (17) 32.0
 
May 19, 2019, noon N/A N/A N/A N/A N/A 1.0 ppb (1) 40.0 ppb (31) N/A N/A 3.0 μg/m3 (12) 31.0
 
May 19, 2019, 11 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 38.0 ppb (29) N/A N/A 6.0 μg/m3 (25) 29.0
 
May 19, 2019, 10 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 37.0 ppb (28) N/A N/A 6.0 μg/m3 (25) 28.0
 
May 19, 2019, 9 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 37.0 ppb (28) N/A N/A 5.0 μg/m3 (21) 28.0
 
May 19, 2019, 8 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) N/A N/A N/A 7.0 μg/m3 (29) 29.0
 
May 19, 2019, 7 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 41.0 ppb (32) N/A N/A 6.0 μg/m3 (25) 32.0
 
May 19, 2019, 6 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 41.0 ppb (32) N/A N/A 6.0 μg/m3 (25) 32.0
 
May 19, 2019, 5 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 41.0 ppb (32) N/A N/A 0.0 μg/m3 (0) 32.0
 
May 19, 2019, 4 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 44.0 ppb (34) N/A N/A 3.0 μg/m3 (12) 34.0
 
May 19, 2019, 3 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 45.0 ppb (35) N/A N/A 7.0 μg/m3 (29) 35.0
 
May 19, 2019, 2 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 44.0 ppb (34) N/A N/A 8.0 μg/m3 (33) 34.0
 
May 19, 2019, 1 a.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 43.0 ppb (33) N/A N/A 10.0 μg/m3 (42) 42.0
 
May 19, 2019, midnight N/A N/A N/A N/A N/A 1.0 ppb (1) 43.0 ppb (33) N/A N/A 5.0 μg/m3 (21) 33.0
 
May 18, 2019, 11 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 42.0 ppb (32) N/A N/A 5.0 μg/m3 (21) 32.0
 
May 18, 2019, 10 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 45.0 ppb (35) N/A N/A 1.0 μg/m3 (4) 35.0
 
May 18, 2019, 9 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 47.0 ppb (36) N/A N/A 2.0 μg/m3 (8) 36.0
 
May 18, 2019, 8 p.m. N/A N/A N/A N/A N/A 1.0 ppb (1) 45.0 ppb (35) N/A N/A 4.0 μg/m3 (17) 35.0