AQSQID: 230031100

Site Name: Micmac

Location: Presque Isle (Nern Rd), ME

Reporting: True, Located: True

Current AQI: 30.0

Presque Isle (Nern Rd) ME, US: 46.6964, -68.033096

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
May 22, 2019, 1 p.m. 1.4 ppb (1) 0.5 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 39.0 ppb (30) 0.15 ppb (2) N/A 4.7 μg/m3 (20) 30.0
 
May 22, 2019, noon 1.5 ppb (1) 0.6 ppb (1) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 39.0 ppb (30) 0.14 ppb (2) N/A 4.4 μg/m3 (18) 30.0
 
May 22, 2019, 11 a.m. 1.2 ppb (1) 0.5 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 39.0 ppb (30) 0.1 ppb (1) N/A 4.5 μg/m3 (19) 30.0
 
May 22, 2019, 10 a.m. 1.9 ppb (2) 0.6 ppb (1) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 38.0 ppb (29) 0.13 ppb (1) N/A 5.4 μg/m3 (23) 29.0
 
May 22, 2019, 9 a.m. 2.7 ppb (3) 0.7 ppb (1) N/A 2.0 ppb (2) N/A 0.0 ppb (0) 38.0 ppb (29) 0.13 ppb (1) N/A 6.3 μg/m3 (26) 29.0
 
May 22, 2019, 8 a.m. 1.9 ppb (2) 0.4 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 38.0 ppb (29) 0.14 ppb (2) N/A 6.6 μg/m3 (28) 29.0
 
May 22, 2019, 7 a.m. 1.1 ppb (1) 0.3 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 41.0 ppb (32) 0.13 ppb (1) N/A 4.6 μg/m3 (19) 32.0
 
May 22, 2019, 6 a.m. 1.4 ppb (1) 0.3 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 39.0 ppb (30) 0.13 ppb (1) N/A 5.6 μg/m3 (23) 30.0
 
May 22, 2019, 5 a.m. 1.7 ppb (2) 0.3 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 39.0 ppb (30) 0.11 ppb (1) N/A 4.9 μg/m3 (20) 30.0
 
May 22, 2019, 4 a.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (32) N/A N/A 2.9 μg/m3 (12) 32.0
 
May 22, 2019, 3 a.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (32) N/A N/A 4.3 μg/m3 (18) 32.0
 
May 22, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (30) N/A N/A 5.0 μg/m3 (21) 30.0
 
May 22, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (30) N/A N/A 4.4 μg/m3 (18) 30.0
 
May 22, 2019, midnight N/A N/A N/A N/A N/A N/A 35.0 ppb (27) N/A N/A 4.1 μg/m3 (17) 27.0
 
May 21, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (31) N/A N/A 5.1 μg/m3 (21) 31.0
 
May 21, 2019, 10 p.m. 1.2 ppb (1) 0.3 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 40.0 ppb (31) N/A N/A 6.4 μg/m3 (27) 31.0
 
May 21, 2019, 9 p.m. 1.7 ppb (2) 0.6 ppb (1) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 40.0 ppb (31) N/A N/A 6.7 μg/m3 (28) 31.0
 
May 21, 2019, 8 p.m. 1.8 ppb (2) 0.9 ppb (1) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 39.0 ppb (30) N/A N/A 1.8 μg/m3 (8) 30.0
 
May 21, 2019, 7 p.m. 1.4 ppb (1) 0.7 ppb (1) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 34.0 ppb (26) N/A N/A 4.0 μg/m3 (17) 26.0
 
May 21, 2019, 6 p.m. 1.2 ppb (1) 0.7 ppb (1) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 34.0 ppb (26) N/A N/A 1.8 μg/m3 (8) 26.0
 
May 21, 2019, 5 p.m. 2.2 ppb (2) 1.1 ppb (1) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 33.0 ppb (25) 0.03 ppb (0) N/A 2.5 μg/m3 (10) 25.0
 
May 21, 2019, 4 p.m. 1.8 ppb (2) 0.7 ppb (1) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 32.0 ppb (25) 0.18 ppb (2) N/A 3.1 μg/m3 (13) 25.0
 
May 21, 2019, 3 p.m. 1.8 ppb (2) 0.8 ppb (1) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 32.0 ppb (25) 0.19 ppb (2) N/A 2.9 μg/m3 (12) 25.0
 
May 21, 2019, 2 p.m. 2.0 ppb (2) 0.8 ppb (1) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 29.0 ppb (22) 0.18 ppb (2) N/A 1.2 μg/m3 (5) 22.0
 
May 21, 2019, 1 p.m. 1.6 ppb (1) 0.8 ppb (1) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 26.0 ppb (20) 0.17 ppb (2) N/A 0.5 μg/m3 (2) 20.0
 
May 21, 2019, noon 0.6 ppb (1) 0.2 ppb (0) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 28.0 ppb (22) 0.18 ppb (2) N/A -0.3 μg/m3 (0) 22.0
 
May 21, 2019, 11 a.m. 1.8 ppb (2) 0.7 ppb (1) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 22.0 ppb (17) 0.19 ppb (2) N/A 4.2 μg/m3 (18) 18.0
 
May 21, 2019, 10 a.m. 1.6 ppb (1) 0.3 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 20.0 ppb (15) 0.18 ppb (2) N/A 3.0 μg/m3 (12) 15.0
 
May 21, 2019, 9 a.m. 1.5 ppb (1) 0.2 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 20.0 ppb (15) 0.18 ppb (2) N/A 2.0 μg/m3 (8) 15.0
 
May 21, 2019, 8 a.m. 0.7 ppb (1) 0.1 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 23.0 ppb (18) 0.17 ppb (2) N/A 1.7 μg/m3 (7) 18.0
 
May 21, 2019, 7 a.m. 0.6 ppb (1) 0.1 ppb (0) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 23.0 ppb (18) 0.17 ppb (2) N/A 2.3 μg/m3 (10) 18.0
 
May 21, 2019, 6 a.m. 0.7 ppb (1) 0.1 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 26.0 ppb (20) 0.17 ppb (2) N/A -0.1 μg/m3 (0) 20.0
 
May 21, 2019, 5 a.m. 0.3 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 27.0 ppb (21) 0.17 ppb (2) N/A 2.2 μg/m3 (9) 21.0
 
May 21, 2019, 4 a.m. 0.3 ppb (0) 0.1 ppb (0) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 28.0 ppb (22) 0.17 ppb (2) N/A 0.7 μg/m3 (3) 22.0
 
May 21, 2019, 3 a.m. 0.3 ppb (0) 0.1 ppb (0) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 27.0 ppb (21) 0.18 ppb (2) N/A 1.0 μg/m3 (4) 21.0
 
May 21, 2019, 2 a.m. 0.6 ppb (1) 0.2 ppb (0) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 26.0 ppb (20) 0.18 ppb (2) N/A 2.6 μg/m3 (11) 20.0
 
May 21, 2019, 1 a.m. 0.6 ppb (1) 0.1 ppb (0) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 27.0 ppb (21) 0.16 ppb (2) N/A 2.7 μg/m3 (11) 21.0
 
May 21, 2019, midnight N/A N/A N/A N/A N/A N/A 24.0 ppb (18) N/A N/A -0.3 μg/m3 (0) 18.0
 
May 20, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (19) N/A N/A 0.8 μg/m3 (3) 19.0
 
May 20, 2019, 10 p.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (19) N/A N/A 4.5 μg/m3 (19) 19.0
 
May 20, 2019, 9 p.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (21) N/A N/A 4.7 μg/m3 (20) 21.0
 
May 20, 2019, 8 p.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (22) N/A N/A 6.4 μg/m3 (27) 27.0
 
May 20, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (22) N/A N/A 5.6 μg/m3 (23) 23.0
 
May 20, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (18) N/A N/A 4.2 μg/m3 (18) 18.0
 
May 20, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (16) N/A N/A 4.3 μg/m3 (18) 18.0
 
May 20, 2019, 4 p.m. 2.8 ppb (3) 0.9 ppb (1) N/A 2.0 ppb (2) N/A 0.0 ppb (0) N/A 0.17 ppb (2) N/A 4.0 μg/m3 (17) 17.0
 
May 20, 2019, 3 p.m. 2.5 ppb (2) 0.8 ppb (1) N/A 2.0 ppb (2) N/A 0.0 ppb (0) N/A 0.17 ppb (2) N/A 3.4 μg/m3 (14) 14.0
 
May 20, 2019, 2 p.m. 1.6 ppb (1) 0.4 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) N/A 0.16 ppb (2) N/A 2.9 μg/m3 (12) 12.0
 
May 20, 2019, 1 p.m. 1.6 ppb (1) 0.3 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) N/A 0.16 ppb (2) N/A 3.2 μg/m3 (13) 13.0
 
May 20, 2019, noon 1.1 ppb (1) 0.2 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) N/A 0.16 ppb (2) N/A 2.6 μg/m3 (11) 11.0
 
May 20, 2019, 11 a.m. 1.9 ppb (2) 0.5 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) N/A 0.13 ppb (1) N/A 2.6 μg/m3 (11) 11.0
 
May 20, 2019, 10 a.m. 1.2 ppb (1) 0.2 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) N/A 0.14 ppb (2) N/A 0.0 μg/m3 (0) 2.0
 
May 20, 2019, 9 a.m. 0.9 ppb (1) 0.2 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) N/A 0.13 ppb (1) N/A 0.4 μg/m3 (2) 2.0
 
May 20, 2019, 8 a.m. 0.8 ppb (1) 0.1 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) N/A 0.13 ppb (1) N/A 2.3 μg/m3 (10) 10.0
 
May 20, 2019, 7 a.m. 0.8 ppb (1) 0.2 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) N/A 0.13 ppb (1) N/A 0.4 μg/m3 (2) 2.0
 
May 20, 2019, 6 a.m. 0.5 ppb (0) 0.1 ppb (0) N/A 0.0 ppb (0) N/A 0.0 ppb (0) N/A 0.13 ppb (1) N/A 0.0 μg/m3 (0) 1.0
 
May 20, 2019, 5 a.m. 0.5 ppb (0) 0.1 ppb (0) N/A 0.0 ppb (0) N/A 0.0 ppb (0) N/A 0.1 ppb (1) N/A 0.2 μg/m3 (1) 1.0
 
May 20, 2019, 4 a.m. 0.8 ppb (1) 0.1 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) N/A 0.13 ppb (1) N/A 1.0 μg/m3 (4) 4.0
 
May 20, 2019, 3 a.m. 1.1 ppb (1) 0.2 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) N/A 0.13 ppb (1) N/A 3.7 μg/m3 (15) 15.0
 
May 20, 2019, 2 a.m. 0.9 ppb (1) 0.1 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) N/A 0.15 ppb (2) N/A 1.8 μg/m3 (8) 8.0
 
May 20, 2019, 1 a.m. 0.7 ppb (1) 0.1 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) N/A 0.13 ppb (1) N/A 4.2 μg/m3 (18) 18.0
 
May 20, 2019, midnight 0.8 ppb (1) 0.1 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) N/A 0.14 ppb (2) N/A 5.6 μg/m3 (23) 23.0
 
May 19, 2019, 11 p.m. 1.0 ppb (1) 0.1 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) N/A 0.12 ppb (1) N/A 3.1 μg/m3 (13) 13.0
 
May 19, 2019, 10 p.m. 0.8 ppb (1) 0.1 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) N/A 0.15 ppb (2) N/A 5.9 μg/m3 (25) 25.0
 
May 19, 2019, 9 p.m. 0.4 ppb (0) 0.1 ppb (0) N/A 0.0 ppb (0) N/A 0.0 ppb (0) N/A 0.14 ppb (2) N/A 5.7 μg/m3 (24) 24.0
 
May 19, 2019, 8 p.m. 0.7 ppb (1) 0.1 ppb (0) N/A 0.0 ppb (0) N/A 0.0 ppb (0) N/A 0.14 ppb (2) N/A 3.8 μg/m3 (16) 16.0
 
May 19, 2019, 7 p.m. 0.4 ppb (0) 0.1 ppb (0) N/A 0.0 ppb (0) N/A 0.0 ppb (0) N/A 0.14 ppb (2) N/A 5.1 μg/m3 (21) 21.0
 
May 19, 2019, 6 p.m. 0.2 ppb (0) 0.1 ppb (0) N/A 0.0 ppb (0) N/A 0.0 ppb (0) N/A 0.14 ppb (2) N/A 4.8 μg/m3 (20) 20.0
 
May 19, 2019, 5 p.m. 0.2 ppb (0) 0.1 ppb (0) N/A 0.0 ppb (0) N/A 0.0 ppb (0) N/A 0.11 ppb (1) N/A 4.4 μg/m3 (18) 18.0
 
May 19, 2019, 4 p.m. 0.3 ppb (0) 0.1 ppb (0) N/A 0.0 ppb (0) N/A 0.0 ppb (0) N/A 0.12 ppb (1) N/A 4.3 μg/m3 (18) 18.0
 
May 19, 2019, 3 p.m. 0.3 ppb (0) 0.1 ppb (0) N/A 0.0 ppb (0) N/A 0.0 ppb (0) N/A 0.11 ppb (1) N/A 3.7 μg/m3 (15) 15.0
 
May 19, 2019, 2 p.m. 0.2 ppb (0) 0.0 ppb (0) N/A 0.0 ppb (0) N/A 0.0 ppb (0) N/A 0.11 ppb (1) N/A 0.8 μg/m3 (3) 3.0
 
May 19, 2019, 1 p.m. 0.5 ppb (0) 0.1 ppb (0) N/A 0.0 ppb (0) N/A 0.0 ppb (0) N/A 0.12 ppb (1) N/A -0.8 μg/m3 (0) 1.0
 
May 19, 2019, noon 1.3 ppb (1) 0.5 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) N/A 0.12 ppb (1) N/A 3.2 μg/m3 (13) 13.0
 
May 19, 2019, 11 a.m. 1.9 ppb (2) 0.7 ppb (1) N/A 1.0 ppb (1) N/A 0.0 ppb (0) N/A 0.09 ppb (1) N/A 3.1 μg/m3 (13) 13.0
 
May 19, 2019, 10 a.m. 1.4 ppb (1) 0.7 ppb (1) N/A 1.0 ppb (1) N/A 0.0 ppb (0) N/A 0.14 ppb (2) N/A 5.9 μg/m3 (25) 25.0
 
May 19, 2019, 9 a.m. 1.0 ppb (1) 0.5 ppb (0) N/A 0.0 ppb (0) N/A 0.0 ppb (0) N/A 0.13 ppb (1) N/A 3.8 μg/m3 (16) 16.0
 
May 19, 2019, 8 a.m. 1.7 ppb (2) 0.5 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) N/A 0.13 ppb (1) N/A 3.7 μg/m3 (15) 15.0
 
May 19, 2019, 7 a.m. 2.2 ppb (2) 0.6 ppb (1) N/A 2.0 ppb (2) N/A 0.0 ppb (0) N/A 0.13 ppb (1) N/A 3.0 μg/m3 (12) 12.0
 
May 19, 2019, 6 a.m. 2.6 ppb (2) 0.5 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) N/A 0.14 ppb (2) N/A 3.2 μg/m3 (13) 13.0
 
May 19, 2019, 5 a.m. 6.5 ppb (6) 2.5 ppb (2) N/A 4.0 ppb (4) N/A 0.0 ppb (0) N/A 0.16 ppb (2) N/A 10.9 μg/m3 (45) 45.0
 
May 19, 2019, 4 a.m. 7.5 ppb (7) 2.1 ppb (2) N/A 5.0 ppb (5) N/A 0.0 ppb (0) N/A 0.15 ppb (2) N/A 4.1 μg/m3 (17) 17.0
 
May 19, 2019, 3 a.m. 2.3 ppb (2) 0.5 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) N/A 0.15 ppb (2) N/A 6.8 μg/m3 (28) 28.0
 
May 19, 2019, 2 a.m. 2.6 ppb (2) 0.2 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) N/A 0.19 ppb (2) N/A 11.8 μg/m3 (49) 49.0
 
May 19, 2019, 1 a.m. 1.0 ppb (1) 0.1 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) N/A 0.14 ppb (2) N/A 6.4 μg/m3 (27) 27.0
 
May 19, 2019, midnight 1.5 ppb (1) 0.3 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) N/A 0.13 ppb (1) N/A 3.7 μg/m3 (15) 15.0
 
May 18, 2019, 11 p.m. 0.9 ppb (1) 0.1 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) N/A 0.11 ppb (1) N/A 3.8 μg/m3 (16) 16.0
 
May 18, 2019, 10 p.m. 1.0 ppb (1) 0.3 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) N/A 0.17 ppb (2) N/A 4.2 μg/m3 (18) 18.0
 
May 18, 2019, 9 p.m. 0.3 ppb (0) 0.1 ppb (0) N/A 0.0 ppb (0) N/A 0.0 ppb (0) N/A 0.14 ppb (2) N/A 3.7 μg/m3 (15) 15.0
 
May 18, 2019, 8 p.m. 0.5 ppb (0) 0.1 ppb (0) N/A 0.0 ppb (0) N/A 0.0 ppb (0) N/A 0.14 ppb (2) N/A 2.8 μg/m3 (12) 12.0
 
May 18, 2019, 7 p.m. 0.4 ppb (0) 0.1 ppb (0) N/A 0.0 ppb (0) N/A 0.0 ppb (0) N/A 0.16 ppb (2) N/A 2.9 μg/m3 (12) 12.0
 
May 18, 2019, 6 p.m. 1.3 ppb (1) 0.7 ppb (1) N/A 1.0 ppb (1) N/A 0.0 ppb (0) N/A 0.16 ppb (2) N/A 9.0 μg/m3 (38) 38.0
 
May 18, 2019, 5 p.m. 0.3 ppb (0) 0.1 ppb (0) N/A 0.0 ppb (0) N/A 0.0 ppb (0) N/A 0.14 ppb (2) N/A 1.4 μg/m3 (6) 6.0
 
May 18, 2019, 4 p.m. 0.2 ppb (0) 0.1 ppb (0) N/A 0.0 ppb (0) N/A 0.0 ppb (0) N/A 0.14 ppb (2) N/A 2.9 μg/m3 (12) 12.0
 
May 18, 2019, 3 p.m. 0.3 ppb (0) 0.2 ppb (0) N/A 0.0 ppb (0) N/A 0.0 ppb (0) N/A 0.14 ppb (2) N/A 3.5 μg/m3 (15) 15.0
 
May 18, 2019, 2 p.m. 0.3 ppb (0) 0.2 ppb (0) N/A 0.0 ppb (0) N/A 0.0 ppb (0) N/A 0.13 ppb (1) N/A 3.0 μg/m3 (12) 12.0
 
May 18, 2019, 1 p.m. 0.2 ppb (0) 0.1 ppb (0) N/A 0.0 ppb (0) N/A 0.0 ppb (0) N/A 0.14 ppb (2) N/A 1.2 μg/m3 (5) 5.0
 
May 18, 2019, noon 0.5 ppb (0) 0.3 ppb (0) N/A 0.0 ppb (0) N/A 0.0 ppb (0) N/A 0.14 ppb (2) N/A 2.9 μg/m3 (12) 12.0
 
May 18, 2019, 11 a.m. 0.4 ppb (0) 0.2 ppb (0) N/A 0.0 ppb (0) N/A 0.0 ppb (0) N/A 0.14 ppb (2) N/A 4.6 μg/m3 (19) 19.0
 
May 18, 2019, 10 a.m. 0.3 ppb (0) 0.1 ppb (0) N/A 0.0 ppb (0) N/A 0.0 ppb (0) N/A 0.14 ppb (2) N/A 4.2 μg/m3 (18) 18.0
 
May 18, 2019, 9 a.m. 0.1 ppb (0) 0.1 ppb (0) N/A 0.0 ppb (0) N/A 0.0 ppb (0) N/A 0.13 ppb (1) N/A 4.5 μg/m3 (19) 19.0
 
May 18, 2019, 8 a.m. 0.9 ppb (1) 0.5 ppb (0) N/A 0.0 ppb (0) N/A 0.0 ppb (0) N/A 0.15 ppb (2) N/A 2.8 μg/m3 (12) 12.0
 
May 18, 2019, 7 a.m. 0.3 ppb (0) 0.1 ppb (0) N/A 0.0 ppb (0) N/A 0.0 ppb (0) N/A 0.17 ppb (2) N/A 2.5 μg/m3 (10) 10.0
 
May 18, 2019, 6 a.m. 0.4 ppb (0) 0.1 ppb (0) N/A 0.0 ppb (0) N/A 0.0 ppb (0) N/A 0.17 ppb (2) N/A 1.6 μg/m3 (7) 7.0
 
May 18, 2019, 5 a.m. 1.3 ppb (1) 0.6 ppb (1) N/A 1.0 ppb (1) N/A 0.0 ppb (0) N/A 0.17 ppb (2) N/A 2.0 μg/m3 (8) 8.0
 
May 18, 2019, 4 a.m. 0.4 ppb (0) 0.1 ppb (0) N/A 0.0 ppb (0) N/A 0.0 ppb (0) N/A 0.16 ppb (2) N/A 0.8 μg/m3 (3) 3.0
 
May 18, 2019, 3 a.m. 0.6 ppb (1) 0.0 ppb (0) N/A 0.0 ppb (0) N/A 0.0 ppb (0) N/A 0.15 ppb (2) N/A 2.8 μg/m3 (12) 12.0
 
May 18, 2019, 2 a.m. 2.0 ppb (2) 0.8 ppb (1) N/A 1.0 ppb (1) N/A 0.0 ppb (0) N/A 0.15 ppb (2) N/A 3.5 μg/m3 (15) 15.0
 
May 18, 2019, 1 a.m. 1.9 ppb (2) 0.5 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) N/A 0.15 ppb (2) N/A 6.3 μg/m3 (26) 26.0
 
May 18, 2019, midnight 1.1 ppb (1) 0.1 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) N/A 0.15 ppb (2) N/A 5.9 μg/m3 (25) 25.0
 
May 17, 2019, 11 p.m. 1.4 ppb (1) 0.1 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) N/A 0.14 ppb (2) N/A 4.3 μg/m3 (18) 18.0
 
May 17, 2019, 10 p.m. 1.5 ppb (1) 0.1 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) N/A 0.14 ppb (2) N/A 6.1 μg/m3 (25) 25.0
 
May 17, 2019, 9 p.m. 0.8 ppb (1) 0.1 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) N/A 0.14 ppb (2) N/A 8.1 μg/m3 (34) 34.0
 
May 17, 2019, 8 p.m. 0.9 ppb (1) 0.1 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) N/A 0.14 ppb (2) N/A 5.4 μg/m3 (23) 23.0
 
May 17, 2019, 7 p.m. 1.1 ppb (1) 0.2 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) N/A 0.14 ppb (2) N/A 4.0 μg/m3 (17) 17.0
 
May 17, 2019, 6 p.m. 0.6 ppb (1) 0.2 ppb (0) N/A 0.0 ppb (0) N/A 0.0 ppb (0) N/A 0.13 ppb (1) N/A 2.9 μg/m3 (12) 12.0
 
May 17, 2019, 5 p.m. 1.0 ppb (1) 0.3 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) N/A 0.11 ppb (1) N/A 3.0 μg/m3 (12) 12.0
 
May 17, 2019, 4 p.m. 1.1 ppb (1) 0.3 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) N/A 0.14 ppb (2) N/A 2.2 μg/m3 (9) 9.0
 
May 17, 2019, 3 p.m. 0.9 ppb (1) 0.3 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) N/A 0.14 ppb (2) N/A 1.3 μg/m3 (5) 5.0
 
May 17, 2019, 2 p.m. 1.0 ppb (1) 0.3 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) N/A 0.14 ppb (2) N/A 0.8 μg/m3 (3) 3.0
 
May 17, 2019, 1 p.m. 0.7 ppb (1) 0.1 ppb (0) N/A 0.0 ppb (0) N/A 0.0 ppb (0) N/A 0.13 ppb (1) N/A 1.6 μg/m3 (7) 7.0
 
May 17, 2019, noon 0.8 ppb (1) 0.2 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) N/A 0.13 ppb (1) N/A 1.3 μg/m3 (5) 5.0
 
May 17, 2019, 11 a.m. 1.7 ppb (2) 0.4 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) N/A 0.11 ppb (1) N/A 2.8 μg/m3 (12) 12.0
 
May 17, 2019, 10 a.m. 2.5 ppb (2) 0.5 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) N/A 0.13 ppb (1) N/A 5.5 μg/m3 (23) 23.0
 
May 17, 2019, 9 a.m. 1.9 ppb (2) 0.3 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) N/A 0.13 ppb (1) N/A 4.1 μg/m3 (17) 17.0
 
May 17, 2019, 8 a.m. 2.3 ppb (2) 0.7 ppb (1) N/A 2.0 ppb (2) N/A 0.0 ppb (0) N/A 0.11 ppb (1) N/A 2.2 μg/m3 (9) 9.0
 
May 17, 2019, 7 a.m. 1.1 ppb (1) 0.1 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) N/A 0.11 ppb (1) N/A 2.7 μg/m3 (11) 11.0
 
May 17, 2019, 6 a.m. 1.5 ppb (1) 0.3 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) N/A 0.11 ppb (1) N/A 2.0 μg/m3 (8) 8.0
 
May 17, 2019, 5 a.m. 0.8 ppb (1) 0.2 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) N/A 0.09 ppb (1) N/A 2.8 μg/m3 (12) 12.0
 
May 17, 2019, 4 a.m. 1.1 ppb (1) 0.1 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) N/A 0.19 ppb (2) N/A 1.9 μg/m3 (8) 8.0
 
May 17, 2019, 3 a.m. 1.4 ppb (1) 0.2 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) N/A 0.11 ppb (1) N/A 4.0 μg/m3 (17) 17.0
 
May 17, 2019, 2 a.m. 2.2 ppb (2) 0.4 ppb (0) N/A 2.0 ppb (2) N/A 0.0 ppb (0) N/A 0.14 ppb (2) N/A 5.0 μg/m3 (21) 21.0
 
May 17, 2019, 1 a.m. 1.4 ppb (1) 0.1 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) N/A 0.12 ppb (1) N/A 4.0 μg/m3 (17) 17.0
 
May 17, 2019, midnight 0.9 ppb (1) 0.1 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) N/A 0.11 ppb (1) N/A 4.3 μg/m3 (18) 18.0
 
May 16, 2019, 11 p.m. 1.0 ppb (1) 0.1 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) N/A 0.1 ppb (1) N/A 4.8 μg/m3 (20) 20.0
 
May 16, 2019, 10 p.m. 0.8 ppb (1) 0.2 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) N/A 0.14 ppb (2) N/A 3.9 μg/m3 (16) 16.0
 
May 16, 2019, 9 p.m. 2.0 ppb (2) 0.8 ppb (1) N/A 1.0 ppb (1) N/A 0.0 ppb (0) N/A 0.15 ppb (2) N/A 3.6 μg/m3 (15) 15.0
 
May 16, 2019, 8 p.m. 1.0 ppb (1) 0.3 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) N/A 0.15 ppb (2) N/A 2.1 μg/m3 (9) 9.0
 
May 16, 2019, 7 p.m. 1.2 ppb (1) 0.5 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) N/A 0.14 ppb (2) N/A 4.4 μg/m3 (18) 18.0
 
May 16, 2019, 6 p.m. 0.8 ppb (1) 0.3 ppb (0) N/A 0.0 ppb (0) N/A 0.0 ppb (0) N/A 0.13 ppb (1) N/A 6.9 μg/m3 (29) 29.0
 
May 16, 2019, 5 p.m. 1.6 ppb (1) 0.6 ppb (1) N/A 1.0 ppb (1) N/A 0.0 ppb (0) N/A 0.1 ppb (1) N/A 2.0 μg/m3 (8) 8.0
 
May 16, 2019, 4 p.m. 0.5 ppb (0) 0.2 ppb (0) N/A 0.0 ppb (0) N/A 0.0 ppb (0) N/A 0.13 ppb (1) N/A 3.1 μg/m3 (13) 13.0
 
May 16, 2019, 3 p.m. 0.9 ppb (1) 0.3 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) N/A 0.14 ppb (2) N/A 3.3 μg/m3 (14) 14.0
 
May 16, 2019, 2 p.m. 1.7 ppb (2) 0.7 ppb (1) N/A 1.0 ppb (1) N/A 0.0 ppb (0) N/A 0.16 ppb (2) N/A 2.4 μg/m3 (10) 10.0
 
May 16, 2019, 1 p.m. 1.3 ppb (1) 0.4 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) N/A 0.14 ppb (2) N/A 3.5 μg/m3 (15) 15.0
 
May 16, 2019, noon 1.5 ppb (1) 0.5 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) N/A 0.13 ppb (1) N/A 3.5 μg/m3 (15) 15.0
 
May 16, 2019, 11 a.m. 2.7 ppb (3) 0.9 ppb (1) N/A 2.0 ppb (2) N/A 0.0 ppb (0) N/A 0.12 ppb (1) N/A 4.7 μg/m3 (20) 20.0
 
May 16, 2019, 10 a.m. 0.8 ppb (1) 0.3 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) N/A 0.14 ppb (2) N/A 4.6 μg/m3 (19) 19.0
 
May 16, 2019, 9 a.m. 0.6 ppb (1) 0.2 ppb (0) N/A 0.0 ppb (0) N/A 0.0 ppb (0) N/A 0.13 ppb (1) N/A 4.6 μg/m3 (19) 19.0
 
May 16, 2019, 8 a.m. 0.5 ppb (0) 0.1 ppb (0) N/A 0.0 ppb (0) N/A 0.0 ppb (0) N/A 0.13 ppb (1) N/A 3.6 μg/m3 (15) 15.0
 
May 16, 2019, 7 a.m. 0.4 ppb (0) 0.2 ppb (0) N/A 0.0 ppb (0) N/A 0.0 ppb (0) N/A 0.13 ppb (1) N/A 3.1 μg/m3 (13) 13.0
 
May 16, 2019, 6 a.m. 0.4 ppb (0) 0.1 ppb (0) N/A 0.0 ppb (0) N/A 0.0 ppb (0) N/A 0.14 ppb (2) N/A 3.2 μg/m3 (13) 13.0
 
May 16, 2019, 5 a.m. 0.7 ppb (1) 0.2 ppb (0) N/A 0.0 ppb (0) N/A 0.0 ppb (0) N/A 0.11 ppb (1) N/A 3.1 μg/m3 (13) 13.0
 
May 16, 2019, 4 a.m. 0.8 ppb (1) 0.2 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) N/A 0.13 ppb (1) N/A 3.4 μg/m3 (14) 14.0
 
May 16, 2019, 3 a.m. 0.7 ppb (1) 0.1 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) N/A 0.13 ppb (1) N/A 2.9 μg/m3 (12) 12.0
 
May 16, 2019, 2 a.m. 0.8 ppb (1) 0.2 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) N/A 0.13 ppb (1) N/A 2.8 μg/m3 (12) 12.0
 
May 16, 2019, 1 a.m. 0.5 ppb (0) 0.2 ppb (0) N/A 0.0 ppb (0) N/A 0.0 ppb (0) N/A 0.12 ppb (1) N/A 2.8 μg/m3 (12) 12.0
 
May 16, 2019, midnight 0.8 ppb (1) 0.2 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) N/A 0.11 ppb (1) N/A 2.6 μg/m3 (11) 11.0
 
May 15, 2019, 11 p.m. 1.1 ppb (1) 0.4 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) N/A 0.09 ppb (1) N/A 2.7 μg/m3 (11) 11.0
 
May 15, 2019, 10 p.m. 0.6 ppb (1) 0.3 ppb (0) N/A 0.0 ppb (0) N/A 0.0 ppb (0) N/A 0.11 ppb (1) N/A 2.8 μg/m3 (12) 12.0
 
May 15, 2019, 9 p.m. 0.3 ppb (0) 0.1 ppb (0) N/A 0.0 ppb (0) N/A 0.0 ppb (0) N/A 0.07 ppb (1) N/A 0.8 μg/m3 (3) 3.0
 
May 15, 2019, 8 p.m. 0.6 ppb (1) 0.2 ppb (0) N/A 0.0 ppb (0) N/A 0.0 ppb (0) N/A 0.04 ppb (0) N/A 3.8 μg/m3 (16) 16.0
 
May 15, 2019, 7 p.m. 1.4 ppb (1) 0.5 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) N/A 0.07 ppb (1) N/A 4.0 μg/m3 (17) 17.0
 
May 15, 2019, 6 p.m. 1.9 ppb (2) 0.8 ppb (1) N/A 1.0 ppb (1) N/A 0.0 ppb (0) N/A 0.09 ppb (1) N/A 3.3 μg/m3 (14) 14.0
 
May 15, 2019, 5 p.m. 1.5 ppb (1) 0.6 ppb (1) N/A 1.0 ppb (1) N/A 0.0 ppb (0) N/A 0.09 ppb (1) N/A 5.5 μg/m3 (23) 23.0
 
May 15, 2019, 4 p.m. 1.5 ppb (1) 0.6 ppb (1) N/A 1.0 ppb (1) N/A 0.0 ppb (0) N/A 0.14 ppb (2) N/A 3.2 μg/m3 (13) 13.0
 
May 15, 2019, 3 p.m. 1.9 ppb (2) 0.8 ppb (1) N/A 1.0 ppb (1) N/A 0.0 ppb (0) N/A 0.14 ppb (2) N/A 3.1 μg/m3 (13) 13.0
 
May 15, 2019, 2 p.m. 1.5 ppb (1) 0.5 ppb (0) N/A 1.0 ppb (1) N/A 0.0 ppb (0) N/A 0.14 ppb (2) N/A 3.1 μg/m3 (13) 13.0