AQSQID: 330150018

Site Name: Londonderry - Moose Hill

Location: Londonderry, NH

Reporting: True, Located: True

Current AQI: 8.0

Londonderry NH, US: 42.862537, -71.380173

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
Sept. 18, 2019, 1 a.m. N/A N/A 2.7 ppb (3) N/A N/A 0.0 ppb (0) 11.0 ppb (8) 0.18 ppb (2) N/A 1.0 μg/m3 (4) 8.0
 
Sept. 18, 2019, midnight N/A N/A 2.5 ppb (2) N/A N/A 0.0 ppb (0) 14.0 ppb (11) 0.18 ppb (2) N/A 3.0 μg/m3 (12) 12.0
 
Sept. 17, 2019, 11 p.m. N/A N/A 2.1 ppb (2) N/A N/A 1.0 ppb (1) 17.0 ppb (13) 0.18 ppb (2) N/A 4.0 μg/m3 (17) 17.0
 
Sept. 17, 2019, 10 p.m. N/A N/A 1.9 ppb (2) N/A N/A 0.0 ppb (0) 17.0 ppb (13) 0.16 ppb (2) N/A -1.0 μg/m3 (0) 13.0
 
Sept. 17, 2019, 9 p.m. N/A N/A 1.8 ppb (2) N/A N/A 0.0 ppb (0) 19.0 ppb (15) 0.15 ppb (2) N/A -2.0 μg/m3 (0) 15.0
 
Sept. 17, 2019, 8 p.m. N/A N/A 1.7 ppb (2) N/A N/A 1.0 ppb (1) 19.0 ppb (15) 0.12 ppb (1) N/A 1.0 μg/m3 (4) 15.0
 
Sept. 17, 2019, 7 p.m. N/A N/A 1.5 ppb (1) N/A N/A 1.0 ppb (1) 20.0 ppb (15) 0.14 ppb (2) N/A 4.0 μg/m3 (17) 17.0
 
Sept. 17, 2019, 6 p.m. N/A N/A 1.4 ppb (1) N/A N/A 0.0 ppb (0) 21.0 ppb (16) 0.14 ppb (2) N/A 5.0 μg/m3 (21) 21.0
 
Sept. 17, 2019, 5 p.m. N/A N/A 1.4 ppb (1) N/A N/A 0.0 ppb (0) 20.0 ppb (15) 0.13 ppb (1) N/A 0.0 μg/m3 (0) 15.0
 
Sept. 17, 2019, 4 p.m. N/A N/A 1.7 ppb (2) N/A N/A 1.0 ppb (1) 20.0 ppb (15) 0.13 ppb (1) N/A -2.0 μg/m3 (0) 15.0
 
Sept. 17, 2019, 3 p.m. N/A N/A 2.4 ppb (2) N/A N/A 1.0 ppb (1) 22.0 ppb (17) 0.14 ppb (2) N/A -1.0 μg/m3 (0) 17.0
 
Sept. 17, 2019, 2 p.m. N/A N/A 3.8 ppb (4) N/A N/A 1.0 ppb (1) 22.0 ppb (17) 0.12 ppb (1) N/A 3.0 μg/m3 (12) 17.0
 
Sept. 17, 2019, 1 p.m. N/A N/A 4.3 ppb (4) N/A N/A 0.0 ppb (0) 20.0 ppb (15) 0.17 ppb (2) N/A 3.0 μg/m3 (12) 15.0
 
Sept. 17, 2019, noon N/A N/A 4.4 ppb (4) N/A N/A 1.0 ppb (1) 19.0 ppb (15) 0.17 ppb (2) N/A 1.0 μg/m3 (4) 15.0
 
Sept. 17, 2019, 11 a.m. N/A N/A 3.4 ppb (3) N/A N/A 0.0 ppb (0) 14.0 ppb (11) 0.16 ppb (2) N/A 2.0 μg/m3 (8) 11.0
 
Sept. 17, 2019, 10 a.m. N/A N/A 2.9 ppb (3) N/A N/A 0.0 ppb (0) 13.0 ppb (10) 0.16 ppb (2) N/A 1.0 μg/m3 (4) 10.0
 
Sept. 17, 2019, 9 a.m. N/A N/A 2.0 ppb (2) N/A N/A 1.0 ppb (1) 11.0 ppb (8) 0.15 ppb (2) N/A 0.0 μg/m3 (0) 8.0
 
Sept. 17, 2019, 8 a.m. N/A N/A 2.4 ppb (2) N/A N/A 1.0 ppb (1) 6.0 ppb (5) 0.11 ppb (1) N/A 4.0 μg/m3 (17) 17.0
 
Sept. 17, 2019, 7 a.m. N/A N/A 2.1 ppb (2) N/A N/A 1.0 ppb (1) 8.0 ppb (6) 0.12 ppb (1) N/A 3.0 μg/m3 (12) 12.0
 
Sept. 17, 2019, 6 a.m. N/A N/A 2.0 ppb (2) N/A N/A 1.0 ppb (1) 11.0 ppb (8) 0.13 ppb (1) N/A 1.0 μg/m3 (4) 8.0
 
Sept. 17, 2019, 5 a.m. N/A N/A 2.0 ppb (2) N/A N/A 0.0 ppb (0) 11.0 ppb (8) 0.13 ppb (1) N/A 1.0 μg/m3 (4) 8.0
 
Sept. 17, 2019, 4 a.m. N/A N/A 2.0 ppb (2) N/A N/A 0.0 ppb (0) 9.0 ppb (7) 0.14 ppb (2) N/A 1.0 μg/m3 (4) 7.0
 
Sept. 17, 2019, 3 a.m. N/A N/A 2.0 ppb (2) N/A N/A 1.0 ppb (1) 9.0 ppb (7) 0.15 ppb (2) N/A 0.0 μg/m3 (0) 7.0
 
Sept. 17, 2019, 2 a.m. N/A N/A 2.0 ppb (2) N/A N/A 0.0 ppb (0) 11.0 ppb (8) 0.12 ppb (1) N/A 2.0 μg/m3 (8) 8.0
 
Sept. 17, 2019, 1 a.m. N/A N/A 1.9 ppb (2) N/A N/A 1.0 ppb (1) 14.0 ppb (11) 0.15 ppb (2) N/A 3.0 μg/m3 (12) 12.0
 
Sept. 17, 2019, midnight N/A N/A 1.7 ppb (2) N/A N/A 0.0 ppb (0) 18.0 ppb (14) 0.14 ppb (2) N/A -1.0 μg/m3 (0) 14.0
 
Sept. 16, 2019, 11 p.m. N/A N/A 1.4 ppb (1) N/A N/A 0.0 ppb (0) 22.0 ppb (17) 0.17 ppb (2) N/A 0.0 μg/m3 (0) 17.0
 
Sept. 16, 2019, 10 p.m. N/A N/A 1.3 ppb (1) N/A N/A 0.0 ppb (0) 29.0 ppb (22) 0.13 ppb (1) N/A 3.0 μg/m3 (12) 22.0
 
Sept. 16, 2019, 9 p.m. N/A N/A 1.3 ppb (1) N/A N/A 0.0 ppb (0) 32.0 ppb (25) 0.12 ppb (1) N/A 4.0 μg/m3 (17) 25.0
 
Sept. 16, 2019, 8 p.m. N/A N/A 1.4 ppb (1) N/A N/A 1.0 ppb (1) 31.0 ppb (24) 0.09 ppb (1) N/A 1.0 μg/m3 (4) 24.0
 
Sept. 16, 2019, 7 p.m. N/A N/A 1.4 ppb (1) N/A N/A N/A 30.0 ppb (23) 0.11 ppb (1) N/A 0.0 μg/m3 (0) 23.0
 
Sept. 16, 2019, 6 p.m. N/A N/A 1.4 ppb (1) N/A N/A N/A 30.0 ppb (23) 0.11 ppb (1) N/A 0.0 μg/m3 (0) 23.0
 
Sept. 16, 2019, 5 p.m. N/A N/A 1.4 ppb (1) N/A N/A N/A 29.0 ppb (22) 0.11 ppb (1) N/A 0.0 μg/m3 (0) 22.0
 
Sept. 16, 2019, 4 p.m. N/A N/A 1.5 ppb (1) N/A N/A N/A 29.0 ppb (22) 0.11 ppb (1) N/A 0.0 μg/m3 (0) 22.0
 
Sept. 16, 2019, 3 p.m. N/A N/A 1.7 ppb (2) N/A N/A N/A 29.0 ppb (22) 0.12 ppb (1) N/A 2.0 μg/m3 (8) 22.0
 
Sept. 16, 2019, 2 p.m. N/A N/A 1.8 ppb (2) N/A N/A N/A 28.0 ppb (22) 0.09 ppb (1) N/A 2.0 μg/m3 (8) 22.0
 
Sept. 16, 2019, 1 p.m. N/A N/A 2.0 ppb (2) N/A N/A N/A 25.0 ppb (19) 0.13 ppb (1) N/A 0.0 μg/m3 (0) 19.0
 
Sept. 16, 2019, noon N/A N/A 2.0 ppb (2) N/A N/A N/A 22.0 ppb (17) 0.13 ppb (1) N/A 0.0 μg/m3 (0) 17.0
 
Sept. 16, 2019, 11 a.m. N/A N/A 1.9 ppb (2) N/A N/A N/A 21.0 ppb (16) 0.15 ppb (2) N/A 4.0 μg/m3 (17) 17.0
 
Sept. 16, 2019, 10 a.m. N/A N/A 1.9 ppb (2) N/A N/A N/A 23.0 ppb (18) 0.16 ppb (2) N/A 6.0 μg/m3 (25) 25.0
 
Sept. 16, 2019, 9 a.m. N/A N/A 1.7 ppb (2) N/A N/A N/A 23.0 ppb (18) 0.13 ppb (1) N/A 3.0 μg/m3 (12) 18.0
 
Sept. 16, 2019, 8 a.m. N/A N/A 1.8 ppb (2) N/A N/A N/A 21.0 ppb (16) 0.1 ppb (1) N/A 2.0 μg/m3 (8) 16.0
 
Sept. 16, 2019, 7 a.m. N/A N/A 1.8 ppb (2) N/A N/A N/A 20.0 ppb (15) 0.14 ppb (2) N/A 5.0 μg/m3 (21) 21.0
 
Sept. 16, 2019, 6 a.m. N/A N/A 1.7 ppb (2) N/A N/A N/A 14.0 ppb (11) 0.14 ppb (2) N/A 3.0 μg/m3 (12) 12.0
 
Sept. 16, 2019, 5 a.m. N/A N/A 1.7 ppb (2) N/A N/A N/A 13.0 ppb (10) 0.13 ppb (1) N/A 2.0 μg/m3 (8) 10.0
 
Sept. 16, 2019, 4 a.m. N/A N/A 1.7 ppb (2) N/A N/A N/A 17.0 ppb (13) 0.14 ppb (2) N/A 6.0 μg/m3 (25) 25.0
 
Sept. 16, 2019, 3 a.m. N/A N/A 1.8 ppb (2) N/A N/A N/A 25.0 ppb (19) 0.13 ppb (1) N/A 8.0 μg/m3 (33) 33.0
 
Sept. 16, 2019, 2 a.m. N/A N/A 1.9 ppb (2) N/A N/A N/A 27.0 ppb (21) 0.11 ppb (1) N/A 3.0 μg/m3 (12) 21.0
 
Sept. 16, 2019, 1 a.m. N/A N/A 1.7 ppb (2) N/A N/A N/A 22.0 ppb (17) 0.14 ppb (2) N/A 2.0 μg/m3 (8) 17.0
 
Sept. 16, 2019, midnight N/A N/A 1.4 ppb (1) N/A N/A N/A 32.0 ppb (25) 0.14 ppb (2) N/A 3.0 μg/m3 (12) 25.0
 
Sept. 15, 2019, 11 p.m. N/A N/A 1.3 ppb (1) N/A N/A N/A 33.0 ppb (25) 0.14 ppb (2) N/A 5.0 μg/m3 (21) 25.0
 
Sept. 15, 2019, 10 p.m. N/A N/A 1.3 ppb (1) N/A N/A N/A 36.0 ppb (28) 0.13 ppb (1) N/A 4.0 μg/m3 (17) 28.0
 
Sept. 15, 2019, 9 p.m. N/A N/A 1.3 ppb (1) N/A N/A N/A 36.0 ppb (28) 0.12 ppb (1) N/A 5.0 μg/m3 (21) 28.0
 
Sept. 15, 2019, 8 p.m. N/A N/A 1.4 ppb (1) N/A N/A N/A 36.0 ppb (28) 0.1 ppb (1) N/A 2.0 μg/m3 (8) 28.0
 
Sept. 15, 2019, 7 p.m. N/A N/A 1.4 ppb (1) N/A N/A N/A 35.0 ppb (27) N/A N/A 3.0 μg/m3 (12) 27.0
 
Sept. 15, 2019, 6 p.m. N/A N/A 1.4 ppb (1) N/A N/A N/A 36.0 ppb (28) 0.13 ppb (1) N/A 1.0 μg/m3 (4) 28.0
 
Sept. 15, 2019, 5 p.m. N/A N/A 1.5 ppb (1) N/A N/A N/A 36.0 ppb (28) 0.13 ppb (1) N/A 2.0 μg/m3 (8) 28.0
 
Sept. 15, 2019, 4 p.m. N/A N/A 1.5 ppb (1) N/A N/A N/A 35.0 ppb (27) 0.13 ppb (1) N/A 1.0 μg/m3 (4) 27.0
 
Sept. 15, 2019, 3 p.m. N/A N/A 1.6 ppb (1) N/A N/A N/A 33.0 ppb (25) 0.13 ppb (1) N/A 2.0 μg/m3 (8) 25.0
 
Sept. 15, 2019, 2 p.m. N/A N/A 1.7 ppb (2) N/A N/A N/A N/A 0.11 ppb (1) N/A 3.0 μg/m3 (12) 12.0
 
Sept. 15, 2019, 1 p.m. N/A N/A 1.8 ppb (2) N/A N/A N/A 23.0 ppb (18) 0.15 ppb (2) N/A 1.0 μg/m3 (4) 18.0
 
Sept. 15, 2019, noon N/A N/A 1.8 ppb (2) N/A N/A N/A 17.0 ppb (13) 0.15 ppb (2) N/A 0.0 μg/m3 (0) 13.0
 
Sept. 15, 2019, 11 a.m. N/A N/A 1.9 ppb (2) N/A N/A N/A 14.0 ppb (11) 0.15 ppb (2) N/A -1.0 μg/m3 (0) 11.0
 
Sept. 15, 2019, 10 a.m. N/A N/A 1.9 ppb (2) N/A N/A N/A 14.0 ppb (11) 0.15 ppb (2) N/A 0.0 μg/m3 (0) 11.0
 
Sept. 15, 2019, 9 a.m. N/A N/A 2.0 ppb (2) N/A N/A N/A 13.0 ppb (10) 0.16 ppb (2) N/A 0.0 μg/m3 (0) 10.0
 
Sept. 15, 2019, 8 a.m. N/A N/A 2.1 ppb (2) N/A N/A N/A 13.0 ppb (10) 0.12 ppb (1) N/A -1.0 μg/m3 (0) 10.0
 
Sept. 15, 2019, 7 a.m. N/A N/A 2.2 ppb (2) N/A N/A N/A 15.0 ppb (12) 0.15 ppb (2) N/A 1.0 μg/m3 (4) 12.0
 
Sept. 15, 2019, 6 a.m. N/A N/A 2.3 ppb (2) N/A N/A N/A 16.0 ppb (12) 0.16 ppb (2) N/A 4.0 μg/m3 (17) 17.0
 
Sept. 15, 2019, 5 a.m. N/A N/A 2.4 ppb (2) N/A N/A N/A 17.0 ppb (13) 0.16 ppb (2) N/A 2.0 μg/m3 (8) 13.0
 
Sept. 15, 2019, 4 a.m. N/A N/A 2.5 ppb (2) N/A N/A N/A 19.0 ppb (15) 0.15 ppb (2) N/A 3.0 μg/m3 (12) 15.0
 
Sept. 15, 2019, 3 a.m. N/A N/A 2.7 ppb (3) N/A N/A N/A 18.0 ppb (14) 0.16 ppb (2) N/A 4.0 μg/m3 (17) 17.0
 
Sept. 15, 2019, 2 a.m. N/A N/A 2.7 ppb (3) N/A N/A N/A 16.0 ppb (12) 0.14 ppb (2) N/A 3.0 μg/m3 (12) 12.0
 
Sept. 15, 2019, 1 a.m. N/A N/A 2.6 ppb (2) N/A N/A N/A 17.0 ppb (13) 0.19 ppb (2) N/A 4.0 μg/m3 (17) 17.0
 
Sept. 15, 2019, midnight N/A N/A 2.6 ppb (2) N/A N/A N/A 17.0 ppb (13) 0.19 ppb (2) N/A 0.0 μg/m3 (0) 13.0
 
Sept. 14, 2019, 11 p.m. N/A N/A 2.6 ppb (2) N/A N/A N/A 23.0 ppb (18) 0.17 ppb (2) N/A 4.0 μg/m3 (17) 18.0
 
Sept. 14, 2019, 10 p.m. N/A N/A 2.8 ppb (3) N/A N/A N/A 21.0 ppb (16) 0.18 ppb (2) N/A 5.0 μg/m3 (21) 21.0
 
Sept. 14, 2019, 9 p.m. N/A N/A 3.0 ppb (3) N/A N/A N/A 20.0 ppb (15) 0.19 ppb (2) N/A 2.0 μg/m3 (8) 15.0
 
Sept. 14, 2019, 8 p.m. N/A N/A 3.0 ppb (3) N/A N/A N/A 17.0 ppb (13) 0.16 ppb (2) N/A 3.0 μg/m3 (12) 13.0
 
Sept. 14, 2019, 7 p.m. N/A N/A 2.9 ppb (3) N/A N/A N/A 17.0 ppb (13) 0.2 ppb (2) N/A 1.0 μg/m3 (4) 13.0
 
Sept. 14, 2019, 6 p.m. N/A N/A 2.9 ppb (3) N/A N/A N/A 18.0 ppb (14) 0.2 ppb (2) N/A 2.0 μg/m3 (8) 14.0
 
Sept. 14, 2019, 5 p.m. N/A N/A 2.8 ppb (3) N/A N/A N/A 20.0 ppb (15) 0.19 ppb (2) N/A 1.0 μg/m3 (4) 15.0
 
Sept. 14, 2019, 4 p.m. N/A N/A 2.8 ppb (3) N/A N/A N/A 23.0 ppb (18) 0.18 ppb (2) N/A 1.0 μg/m3 (4) 18.0
 
Sept. 14, 2019, 3 p.m. N/A N/A 2.9 ppb (3) N/A N/A N/A 22.0 ppb (17) 0.17 ppb (2) N/A 4.0 μg/m3 (17) 17.0
 
Sept. 14, 2019, 2 p.m. N/A N/A 3.0 ppb (3) N/A N/A N/A 21.0 ppb (16) 0.14 ppb (2) N/A 6.0 μg/m3 (25) 25.0
 
Sept. 14, 2019, 1 p.m. N/A N/A 3.2 ppb (3) N/A N/A N/A 20.0 ppb (15) 0.16 ppb (2) N/A 2.0 μg/m3 (8) 15.0
 
Sept. 14, 2019, noon N/A N/A 3.2 ppb (3) N/A N/A N/A 17.0 ppb (13) 0.16 ppb (2) N/A 2.0 μg/m3 (8) 13.0
 
Sept. 14, 2019, 11 a.m. N/A N/A 3.4 ppb (3) N/A N/A N/A 15.0 ppb (12) 0.16 ppb (2) N/A 2.0 μg/m3 (8) 12.0
 
Sept. 14, 2019, 10 a.m. N/A N/A 3.4 ppb (3) N/A N/A N/A 11.0 ppb (8) 0.17 ppb (2) N/A 3.0 μg/m3 (12) 12.0
 
Sept. 14, 2019, 9 a.m. N/A N/A 3.4 ppb (3) N/A N/A N/A N/A 0.17 ppb (2) N/A 2.0 μg/m3 (8) 8.0
 
Sept. 14, 2019, 8 a.m. N/A N/A 3.6 ppb (3) N/A N/A N/A 8.0 ppb (6) 0.13 ppb (1) N/A 3.0 μg/m3 (12) 12.0
 
Sept. 14, 2019, 7 a.m. N/A N/A 3.8 ppb (4) N/A N/A N/A 8.0 ppb (6) N/A N/A 5.0 μg/m3 (21) 21.0
 
Sept. 14, 2019, 6 a.m. N/A N/A 4.0 ppb (4) N/A N/A N/A 10.0 ppb (8) 0.17 ppb (2) N/A 7.0 μg/m3 (29) 29.0
 
Sept. 14, 2019, 5 a.m. N/A N/A 4.3 ppb (4) N/A N/A N/A 8.0 ppb (6) 0.17 ppb (2) N/A 6.0 μg/m3 (25) 25.0
 
Sept. 14, 2019, 4 a.m. N/A N/A 5.0 ppb (5) N/A N/A N/A 8.0 ppb (6) 0.18 ppb (2) N/A 10.0 μg/m3 (42) 42.0
 
Sept. 14, 2019, 3 a.m. N/A N/A 4.0 ppb (4) N/A N/A N/A 8.0 ppb (6) 0.18 ppb (2) N/A 8.0 μg/m3 (33) 33.0
 
Sept. 14, 2019, 2 a.m. N/A N/A N/A N/A N/A N/A 13.0 ppb (10) 0.14 ppb (2) N/A 6.0 μg/m3 (25) 25.0
 
Sept. 14, 2019, 1 a.m. N/A N/A N/A N/A N/A N/A 15.0 ppb (12) 0.18 ppb (2) N/A 17.0 μg/m3 (61) 61.0
 
Sept. 14, 2019, midnight N/A N/A 2.9 ppb (3) N/A N/A N/A 20.0 ppb (15) 0.18 ppb (2) N/A 17.0 μg/m3 (61) 61.0
 
Sept. 13, 2019, 11 p.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (18) 0.16 ppb (2) N/A 2.0 μg/m3 (8) 18.0
 
Sept. 13, 2019, 10 p.m. N/A N/A 1.8 ppb (2) N/A N/A N/A 28.0 ppb (22) 0.14 ppb (2) N/A 1.0 μg/m3 (4) 22.0
 
Sept. 13, 2019, 9 p.m. N/A N/A 1.8 ppb (2) N/A N/A N/A 30.0 ppb (23) 0.13 ppb (1) N/A 2.0 μg/m3 (8) 23.0
 
Sept. 13, 2019, 8 p.m. N/A N/A 1.3 ppb (1) N/A N/A N/A 32.0 ppb (25) 0.1 ppb (1) N/A 2.0 μg/m3 (8) 25.0
 
Sept. 13, 2019, 7 p.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) 0.13 ppb (1) N/A 1.0 μg/m3 (4) 24.0
 
Sept. 13, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (23) 0.13 ppb (1) N/A 1.0 μg/m3 (4) 23.0
 
Sept. 13, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (22) 0.13 ppb (1) N/A 1.0 μg/m3 (4) 22.0
 
Sept. 13, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (22) 0.13 ppb (1) N/A 1.0 μg/m3 (4) 22.0
 
Sept. 13, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (21) 0.14 ppb (2) N/A 2.0 μg/m3 (8) 21.0
 
Sept. 13, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (18) 0.11 ppb (1) N/A 6.0 μg/m3 (25) 25.0
 
Sept. 13, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (16) 0.14 ppb (2) N/A 5.0 μg/m3 (21) 21.0
 
Sept. 13, 2019, noon N/A N/A 2.6 ppb (2) N/A N/A N/A 19.0 ppb (15) 0.14 ppb (2) N/A N/A 15.0
 
Sept. 13, 2019, 11 a.m. N/A N/A 2.8 ppb (3) N/A N/A N/A 13.0 ppb (10) 0.15 ppb (2) N/A 1.0 μg/m3 (4) 10.0
 
Sept. 13, 2019, 10 a.m. N/A N/A 2.9 ppb (3) N/A N/A N/A 7.0 ppb (5) 0.16 ppb (2) N/A 5.0 μg/m3 (21) 21.0
 
Sept. 13, 2019, 9 a.m. N/A N/A 3.0 ppb (3) N/A N/A N/A 6.0 ppb (5) 0.16 ppb (2) N/A 6.0 μg/m3 (25) 25.0
 
Sept. 13, 2019, 8 a.m. N/A N/A 3.2 ppb (3) N/A N/A N/A 5.0 ppb (4) 0.14 ppb (2) N/A 5.0 μg/m3 (21) 21.0
 
Sept. 13, 2019, 7 a.m. N/A N/A 3.3 ppb (3) N/A N/A N/A 4.0 ppb (3) 0.19 ppb (2) N/A 3.0 μg/m3 (12) 12.0
 
Sept. 13, 2019, 6 a.m. N/A N/A 3.0 ppb (3) N/A N/A N/A 4.0 ppb (3) 0.2 ppb (2) N/A 1.0 μg/m3 (4) 4.0
 
Sept. 13, 2019, 5 a.m. N/A N/A 2.0 ppb (2) N/A N/A N/A 3.0 ppb (2) 0.19 ppb (2) N/A 4.0 μg/m3 (17) 17.0
 
Sept. 13, 2019, 4 a.m. N/A N/A 1.8 ppb (2) N/A N/A N/A 2.0 ppb (2) 0.17 ppb (2) N/A 5.0 μg/m3 (21) 21.0
 
Sept. 13, 2019, 3 a.m. N/A N/A 1.7 ppb (2) N/A N/A N/A 2.0 ppb (2) 0.17 ppb (2) N/A 5.0 μg/m3 (21) 21.0
 
Sept. 13, 2019, 2 a.m. N/A N/A 1.7 ppb (2) N/A N/A N/A 2.0 ppb (2) 0.14 ppb (2) N/A 6.0 μg/m3 (25) 25.0
 
Sept. 13, 2019, 1 a.m. N/A N/A 1.6 ppb (1) N/A N/A N/A 3.0 ppb (2) 0.17 ppb (2) N/A 0.0 μg/m3 (0) 2.0
 
Sept. 13, 2019, midnight N/A N/A 1.6 ppb (1) N/A N/A N/A 6.0 ppb (5) 0.17 ppb (2) N/A 3.0 μg/m3 (12) 12.0
 
Sept. 12, 2019, 11 p.m. N/A N/A 1.6 ppb (1) N/A N/A N/A 8.0 ppb (6) 0.17 ppb (2) N/A 4.0 μg/m3 (17) 17.0
 
Sept. 12, 2019, 10 p.m. N/A N/A 1.6 ppb (1) N/A N/A N/A 16.0 ppb (12) 0.15 ppb (2) N/A 2.0 μg/m3 (8) 12.0
 
Sept. 12, 2019, 9 p.m. N/A N/A 1.7 ppb (2) N/A N/A N/A 23.0 ppb (18) 0.14 ppb (2) N/A 3.0 μg/m3 (12) 18.0
 
Sept. 12, 2019, 8 p.m. N/A N/A 1.9 ppb (2) N/A N/A N/A 24.0 ppb (18) 0.11 ppb (1) N/A 2.0 μg/m3 (8) 18.0
 
Sept. 12, 2019, 7 p.m. N/A N/A 2.0 ppb (2) N/A N/A N/A 24.0 ppb (18) 0.15 ppb (2) N/A 1.0 μg/m3 (4) 18.0
 
Sept. 12, 2019, 6 p.m. N/A N/A 2.1 ppb (2) N/A N/A N/A 23.0 ppb (18) 0.15 ppb (2) N/A -1.0 μg/m3 (0) 18.0
 
Sept. 12, 2019, 5 p.m. N/A N/A 2.1 ppb (2) N/A N/A N/A 23.0 ppb (18) 0.14 ppb (2) N/A 1.0 μg/m3 (4) 18.0
 
Sept. 12, 2019, 4 p.m. N/A N/A 2.3 ppb (2) N/A N/A N/A 24.0 ppb (18) 0.14 ppb (2) N/A 4.0 μg/m3 (17) 18.0
 
Sept. 12, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (17) 0.16 ppb (2) N/A 4.0 μg/m3 (17) 17.0
 
Sept. 12, 2019, 2 p.m. N/A N/A 2.2 ppb (2) N/A N/A N/A 15.0 ppb (12) 0.12 ppb (1) N/A 2.0 μg/m3 (8) 12.0
 
Sept. 12, 2019, 1 p.m. N/A N/A 3.2 ppb (3) N/A N/A N/A 14.0 ppb (11) 0.17 ppb (2) N/A 5.0 μg/m3 (21) 21.0
 
Sept. 12, 2019, noon N/A N/A 3.4 ppb (3) N/A N/A N/A 15.0 ppb (12) 0.17 ppb (2) N/A 3.0 μg/m3 (12) 12.0
 
Sept. 12, 2019, 11 a.m. N/A N/A 4.7 ppb (4) N/A N/A N/A 17.0 ppb (13) 0.18 ppb (2) N/A 3.0 μg/m3 (12) 13.0
 
Sept. 12, 2019, 10 a.m. N/A N/A 3.3 ppb (3) N/A N/A N/A 9.0 ppb (7) 0.18 ppb (2) N/A 2.0 μg/m3 (8) 8.0
 
Sept. 12, 2019, 9 a.m. N/A N/A 2.7 ppb (3) N/A N/A N/A 9.0 ppb (7) 0.18 ppb (2) N/A 6.0 μg/m3 (25) 25.0
 
Sept. 12, 2019, 8 a.m. N/A N/A 2.9 ppb (3) N/A N/A N/A 15.0 ppb (12) 0.14 ppb (2) N/A 7.0 μg/m3 (29) 29.0
 
Sept. 12, 2019, 7 a.m. N/A N/A 2.4 ppb (2) N/A N/A N/A 17.0 ppb (13) 0.19 ppb (2) N/A 4.0 μg/m3 (17) 17.0
 
Sept. 12, 2019, 6 a.m. N/A N/A 2.3 ppb (2) N/A N/A N/A 12.0 ppb (9) 0.19 ppb (2) N/A 7.0 μg/m3 (29) 29.0
 
Sept. 12, 2019, 5 a.m. N/A N/A 3.0 ppb (3) N/A N/A N/A 11.0 ppb (8) 0.19 ppb (2) N/A 6.0 μg/m3 (25) 25.0
 
Sept. 12, 2019, 4 a.m. N/A N/A 3.2 ppb (3) N/A N/A N/A 15.0 ppb (12) 0.19 ppb (2) N/A 4.0 μg/m3 (17) 17.0
 
Sept. 12, 2019, 3 a.m. N/A N/A 4.0 ppb (4) N/A N/A N/A 19.0 ppb (15) 0.19 ppb (2) N/A 4.0 μg/m3 (17) 17.0
 
Sept. 12, 2019, 2 a.m. N/A N/A 3.5 ppb (3) N/A N/A N/A 29.0 ppb (22) 0.15 ppb (2) N/A 6.0 μg/m3 (25) 25.0
 
Sept. 12, 2019, 1 a.m. N/A N/A 4.5 ppb (4) N/A N/A N/A 25.0 ppb (19) 0.19 ppb (2) N/A 7.0 μg/m3 (29) 29.0
 
Sept. 12, 2019, midnight N/A N/A 4.1 ppb (4) N/A N/A N/A 25.0 ppb (19) 0.19 ppb (2) N/A 8.0 μg/m3 (33) 33.0
 
Sept. 11, 2019, 11 p.m. N/A N/A 2.7 ppb (3) N/A N/A N/A 41.0 ppb (32) 0.17 ppb (2) N/A 7.0 μg/m3 (29) 32.0
 
Sept. 11, 2019, 10 p.m. N/A N/A 2.2 ppb (2) N/A N/A N/A 45.0 ppb (35) 0.17 ppb (2) N/A 6.0 μg/m3 (25) 35.0
 
Sept. 11, 2019, 9 p.m. N/A N/A 2.4 ppb (2) N/A N/A N/A 46.0 ppb (35) 0.17 ppb (2) N/A 5.0 μg/m3 (21) 35.0
 
Sept. 11, 2019, 8 p.m. N/A N/A 2.4 ppb (2) N/A N/A N/A 46.0 ppb (35) 0.13 ppb (1) N/A 6.0 μg/m3 (25) 35.0
 
Sept. 11, 2019, 7 p.m. N/A N/A 2.4 ppb (2) N/A N/A N/A 46.0 ppb (35) 0.15 ppb (2) N/A 7.0 μg/m3 (29) 35.0
 
Sept. 11, 2019, 6 p.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (35) 0.16 ppb (2) N/A 3.0 μg/m3 (12) 35.0
 
Sept. 11, 2019, 5 p.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (32) 0.17 ppb (2) N/A 4.0 μg/m3 (17) 32.0
 
Sept. 11, 2019, 4 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (28) 0.17 ppb (2) N/A 6.0 μg/m3 (25) 28.0
 
Sept. 11, 2019, 3 p.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (24) 0.17 ppb (2) N/A 6.0 μg/m3 (25) 25.0
 
Sept. 11, 2019, 2 p.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (21) 0.13 ppb (1) N/A 3.0 μg/m3 (12) 21.0
 
Sept. 11, 2019, 1 p.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (20) 0.17 ppb (2) N/A 4.0 μg/m3 (17) 20.0
 
Sept. 11, 2019, noon N/A N/A 5.4 ppb (5) N/A N/A N/A 25.0 ppb (19) 0.17 ppb (2) N/A 3.0 μg/m3 (12) 19.0
 
Sept. 11, 2019, 11 a.m. N/A N/A 5.0 ppb (5) N/A N/A N/A 23.0 ppb (18) 0.16 ppb (2) N/A 3.0 μg/m3 (12) 18.0
 
Sept. 11, 2019, 10 a.m. N/A N/A 3.4 ppb (3) N/A N/A N/A 22.0 ppb (17) 0.15 ppb (2) N/A 5.0 μg/m3 (21) 21.0
 
Sept. 11, 2019, 9 a.m. N/A N/A 2.2 ppb (2) N/A N/A N/A 22.0 ppb (17) 0.14 ppb (2) N/A 2.0 μg/m3 (8) 17.0
 
Sept. 11, 2019, 8 a.m. N/A N/A 2.1 ppb (2) N/A N/A N/A 22.0 ppb (17) 0.11 ppb (1) N/A -1.0 μg/m3 (0) 17.0
 
Sept. 11, 2019, 7 a.m. N/A N/A 2.2 ppb (2) N/A N/A N/A 22.0 ppb (17) 0.16 ppb (2) N/A 2.0 μg/m3 (8) 17.0
 
Sept. 11, 2019, 6 a.m. N/A N/A 2.7 ppb (3) N/A N/A N/A 24.0 ppb (18) 0.16 ppb (2) N/A 3.0 μg/m3 (12) 18.0
 
Sept. 11, 2019, 5 a.m. N/A N/A 3.3 ppb (3) N/A N/A N/A 24.0 ppb (18) 0.17 ppb (2) N/A 0.0 μg/m3 (0) 18.0
 
Sept. 11, 2019, 4 a.m. N/A N/A 3.8 ppb (4) N/A N/A N/A 24.0 ppb (18) 0.17 ppb (2) N/A 1.0 μg/m3 (4) 18.0
 
Sept. 11, 2019, 3 a.m. N/A N/A 3.9 ppb (4) N/A N/A N/A 25.0 ppb (19) 0.18 ppb (2) N/A 2.0 μg/m3 (8) 19.0
 
Sept. 11, 2019, 2 a.m. N/A N/A 5.5 ppb (5) N/A N/A N/A 22.0 ppb (17) 0.16 ppb (2) N/A 1.0 μg/m3 (4) 17.0