ID: 2023

AQSQID: 330150018

Site Name: Londonderry - Moose Hill

Added: April 21, 2020, 6:24 p.m.

Updated: Sept. 23, 2020, 11:40 a.m.

Location: Londonderry (Moosehill School), NH

Reporting: True, Located: True

Current AQI: 20.0

Londonderry (Moosehill School) NH, US: 42.862531, -71.38014

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
Sept. 23, 2020, 10 a.m. N/A N/A 2.3 ppb (2) N/A N/A 0.0 ppb (0) 26.0 ppb (20) 0.14 ppb (2) 11.0 μg/m3 (10) 4.6 μg/m3 (19) 20.0
 
Sept. 23, 2020, 9 a.m. N/A N/A 2.4 ppb (2) N/A N/A 0.0 ppb (0) 33.0 ppb (25) 0.14 ppb (2) 12.0 μg/m3 (11) 4.7 μg/m3 (20) 25.0
 
Sept. 23, 2020, 8 a.m. N/A N/A 2.6 ppb (2) N/A N/A 1.0 ppb (1) 34.0 ppb (26) 0.1 ppb (1) 12.0 μg/m3 (11) 4.9 μg/m3 (20) 26.0
 
Sept. 23, 2020, 7 a.m. N/A N/A 2.8 ppb (3) N/A N/A 1.0 ppb (1) 33.0 ppb (25) 0.13 ppb (1) 13.0 μg/m3 (12) 5.3 μg/m3 (22) 25.0
 
Sept. 23, 2020, 6 a.m. N/A N/A 2.9 ppb (3) N/A N/A 1.0 ppb (1) 32.0 ppb (25) 0.13 ppb (1) 15.0 μg/m3 (14) 5.7 μg/m3 (24) 25.0
 
Sept. 23, 2020, 5 a.m. N/A N/A 2.7 ppb (3) N/A N/A 1.0 ppb (1) 32.0 ppb (25) 0.14 ppb (2) 15.0 μg/m3 (14) 5.7 μg/m3 (24) 25.0
 
Sept. 23, 2020, 4 a.m. N/A N/A 2.5 ppb (2) N/A N/A 1.0 ppb (1) 33.0 ppb (25) 0.13 ppb (1) 16.0 μg/m3 (15) 5.6 μg/m3 (23) 25.0
 
Sept. 23, 2020, 3 a.m. N/A N/A 2.4 ppb (2) N/A N/A 1.0 ppb (1) 35.0 ppb (27) 0.13 ppb (1) 17.0 μg/m3 (15) 5.5 μg/m3 (23) 27.0
 
Sept. 23, 2020, 2 a.m. N/A N/A 2.3 ppb (2) N/A N/A 1.0 ppb (1) 35.0 ppb (27) 0.08 ppb (1) 16.0 μg/m3 (15) 5.1 μg/m3 (21) 27.0
 
Sept. 23, 2020, 1 a.m. N/A N/A 2.1 ppb (2) N/A N/A 1.0 ppb (1) 36.0 ppb (28) 0.11 ppb (1) 14.0 μg/m3 (13) 4.9 μg/m3 (20) 28.0
 
Sept. 23, 2020, midnight N/A N/A 1.9 ppb (2) N/A N/A 1.0 ppb (1) 37.0 ppb (28) 0.11 ppb (1) 13.0 μg/m3 (12) 4.5 μg/m3 (19) 28.0
 
Sept. 22, 2020, 11 p.m. N/A N/A 1.9 ppb (2) N/A N/A 1.0 ppb (1) 37.0 ppb (28) 0.1 ppb (1) 14.0 μg/m3 (13) 3.9 μg/m3 (16) 28.0
 
Sept. 22, 2020, 10 p.m. N/A N/A 1.8 ppb (2) N/A N/A 0.0 ppb (0) 37.0 ppb (28) 0.1 ppb (1) 10.0 μg/m3 (9) 3.3 μg/m3 (14) 28.0
 
Sept. 22, 2020, 9 p.m. N/A N/A 1.8 ppb (2) N/A N/A 0.0 ppb (0) 38.0 ppb (29) 0.1 ppb (1) 10.0 μg/m3 (9) 2.8 μg/m3 (12) 29.0
 
Sept. 22, 2020, 8 p.m. N/A N/A 1.9 ppb (2) N/A N/A 0.0 ppb (0) 37.0 ppb (28) 0.09 ppb (1) 11.0 μg/m3 (10) 3.0 μg/m3 (12) 28.0
 
Sept. 22, 2020, 7 p.m. N/A N/A 1.9 ppb (2) N/A N/A 0.0 ppb (0) 37.0 ppb (28) 0.11 ppb (1) 10.0 μg/m3 (9) 2.8 μg/m3 (12) 28.0
 
Sept. 22, 2020, 6 p.m. N/A N/A 2.3 ppb (2) N/A N/A 0.0 ppb (0) 38.0 ppb (29) 0.11 ppb (1) 11.0 μg/m3 (10) 3.2 μg/m3 (13) 29.0
 
Sept. 22, 2020, 5 p.m. N/A N/A 2.9 ppb (3) N/A N/A 0.0 ppb (0) 34.0 ppb (26) 0.12 ppb (1) 14.0 μg/m3 (13) 3.5 μg/m3 (15) 26.0
 
Sept. 22, 2020, 4 p.m. N/A N/A 4.0 ppb (4) N/A N/A 0.0 ppb (0) 29.0 ppb (22) 0.13 ppb (1) 12.0 μg/m3 (11) 3.5 μg/m3 (15) 22.0
 
Sept. 22, 2020, 3 p.m. N/A N/A 5.1 ppb (5) N/A N/A 1.0 ppb (1) 25.0 ppb (19) 0.14 ppb (2) 14.0 μg/m3 (13) 3.8 μg/m3 (16) 19.0
 
Sept. 22, 2020, 2 p.m. N/A N/A 5.8 ppb (5) N/A N/A 0.0 ppb (0) 22.0 ppb (17) 0.11 ppb (1) 12.0 μg/m3 (11) 3.8 μg/m3 (16) 17.0
 
Sept. 22, 2020, 1 p.m. N/A N/A 6.2 ppb (6) N/A N/A 0.0 ppb (0) 18.0 ppb (14) 0.14 ppb (2) 11.0 μg/m3 (10) 3.8 μg/m3 (16) 16.0
 
Sept. 22, 2020, noon N/A N/A 5.2 ppb (5) N/A N/A 0.0 ppb (0) 15.0 ppb (12) 0.15 ppb (2) 8.0 μg/m3 (7) 3.6 μg/m3 (15) 15.0
 
Sept. 22, 2020, 11 a.m. N/A N/A 4.5 ppb (4) N/A N/A 0.0 ppb (0) 13.0 ppb (10) 0.13 ppb (1) 7.0 μg/m3 (6) 3.6 μg/m3 (15) 15.0
 
Sept. 22, 2020, 10 a.m. N/A N/A 4.3 ppb (4) N/A N/A 0.0 ppb (0) 12.0 ppb (9) 0.13 ppb (1) 8.0 μg/m3 (7) 3.6 μg/m3 (15) 15.0
 
Sept. 22, 2020, 9 a.m. N/A N/A 4.5 ppb (4) N/A N/A 0.0 ppb (0) 12.0 ppb (9) 0.13 ppb (1) 8.0 μg/m3 (7) 3.6 μg/m3 (15) 15.0
 
Sept. 22, 2020, 8 a.m. N/A N/A 5.4 ppb (5) N/A N/A 0.0 ppb (0) 13.0 ppb (10) 0.11 ppb (1) 8.0 μg/m3 (7) 3.8 μg/m3 (16) 16.0
 
Sept. 22, 2020, 7 a.m. N/A N/A 6.4 ppb (6) N/A N/A 0.0 ppb (0) 13.0 ppb (10) 0.14 ppb (2) 8.0 μg/m3 (7) 4.1 μg/m3 (17) 17.0
 
Sept. 22, 2020, 6 a.m. N/A N/A 6.8 ppb (6) N/A N/A 0.0 ppb (0) 10.0 ppb (8) 0.16 ppb (2) 9.0 μg/m3 (8) 4.4 μg/m3 (18) 18.0
 
Sept. 22, 2020, 5 a.m. N/A N/A 5.9 ppb (5) N/A N/A 0.0 ppb (0) 8.0 ppb (6) 0.16 ppb (2) 9.0 μg/m3 (8) 4.4 μg/m3 (18) 18.0
 
Sept. 22, 2020, 4 a.m. N/A N/A 4.2 ppb (4) N/A N/A 0.0 ppb (0) 9.0 ppb (7) 0.15 ppb (2) 9.0 μg/m3 (8) 4.4 μg/m3 (18) 18.0
 
Sept. 22, 2020, 3 a.m. N/A N/A 4.1 ppb (4) N/A N/A 0.0 ppb (0) 11.0 ppb (8) 0.14 ppb (2) 9.0 μg/m3 (8) 4.5 μg/m3 (19) 19.0
 
Sept. 22, 2020, 2 a.m. N/A N/A 4.4 ppb (4) N/A N/A 0.0 ppb (0) 10.0 ppb (8) 0.13 ppb (1) 9.0 μg/m3 (8) 4.1 μg/m3 (17) 17.0
 
Sept. 22, 2020, 1 a.m. N/A N/A 5.3 ppb (5) N/A N/A 0.0 ppb (0) 11.0 ppb (8) 0.16 ppb (2) 9.0 μg/m3 (8) 3.2 μg/m3 (13) 13.0
 
Sept. 22, 2020, midnight N/A N/A 3.7 ppb (3) N/A N/A 0.0 ppb (0) 14.0 ppb (11) 0.14 ppb (2) 11.0 μg/m3 (10) 3.5 μg/m3 (15) 15.0
 
Sept. 21, 2020, 11 p.m. N/A N/A 2.0 ppb (2) N/A N/A 0.0 ppb (0) 19.0 ppb (15) 0.15 ppb (2) 15.0 μg/m3 (14) 3.2 μg/m3 (13) 15.0
 
Sept. 21, 2020, 10 p.m. N/A N/A 1.4 ppb (1) N/A N/A 0.0 ppb (0) 24.0 ppb (18) 0.13 ppb (1) 17.0 μg/m3 (15) 2.8 μg/m3 (12) 18.0
 
Sept. 21, 2020, 9 p.m. N/A N/A 1.2 ppb (1) N/A N/A 0.0 ppb (0) 28.0 ppb (22) 0.12 ppb (1) 18.0 μg/m3 (16) 2.6 μg/m3 (11) 22.0
 
Sept. 21, 2020, 8 p.m. N/A N/A 1.1 ppb (1) N/A N/A 0.0 ppb (0) 30.0 ppb (23) 0.08 ppb (1) 11.0 μg/m3 (10) 2.1 μg/m3 (9) 23.0
 
Sept. 21, 2020, 7 p.m. N/A N/A 1.1 ppb (1) N/A N/A 0.0 ppb (0) 31.0 ppb (24) 0.11 ppb (1) 9.0 μg/m3 (8) 2.1 μg/m3 (9) 24.0
 
Sept. 21, 2020, 6 p.m. N/A N/A 1.1 ppb (1) N/A N/A 0.0 ppb (0) 31.0 ppb (24) 0.11 ppb (1) 7.0 μg/m3 (6) 2.1 μg/m3 (9) 24.0
 
Sept. 21, 2020, 5 p.m. N/A N/A 1.0 ppb (1) N/A N/A 0.0 ppb (0) 30.0 ppb (23) 0.1 ppb (1) 7.0 μg/m3 (6) 1.9 μg/m3 (8) 23.0
 
Sept. 21, 2020, 4 p.m. N/A N/A 1.1 ppb (1) N/A N/A 0.0 ppb (0) 27.0 ppb (21) 0.12 ppb (1) 7.0 μg/m3 (6) 1.8 μg/m3 (8) 21.0
 
Sept. 21, 2020, 3 p.m. N/A N/A 1.9 ppb (2) N/A N/A 0.0 ppb (0) 25.0 ppb (19) 0.11 ppb (1) 8.0 μg/m3 (7) 2.5 μg/m3 (10) 19.0
 
Sept. 21, 2020, 2 p.m. N/A N/A 4.8 ppb (4) N/A N/A 0.0 ppb (0) 20.0 ppb (15) 0.11 ppb (1) 9.0 μg/m3 (8) 3.6 μg/m3 (15) 15.0
 
Sept. 21, 2020, 1 p.m. N/A N/A 10.2 ppb (9) N/A N/A 0.0 ppb (0) 14.0 ppb (11) 0.2 ppb (2) 10.0 μg/m3 (9) 4.4 μg/m3 (18) 18.0
 
Sept. 21, 2020, noon N/A N/A 7.5 ppb (7) N/A N/A 0.0 ppb (0) 12.0 ppb (9) 0.2 ppb (2) 9.0 μg/m3 (8) 4.6 μg/m3 (19) 19.0
 
Sept. 21, 2020, 11 a.m. N/A N/A 4.8 ppb (4) N/A N/A 0.0 ppb (0) 11.0 ppb (8) 0.16 ppb (2) 8.0 μg/m3 (7) 4.8 μg/m3 (20) 20.0
 
Sept. 21, 2020, 10 a.m. N/A N/A 4.8 ppb (4) N/A N/A 0.0 ppb (0) 11.0 ppb (8) 0.16 ppb (2) 9.0 μg/m3 (8) 5.0 μg/m3 (21) 21.0
 
Sept. 21, 2020, 9 a.m. N/A N/A 5.0 ppb (5) N/A N/A 0.0 ppb (0) 11.0 ppb (8) 0.16 ppb (2) 9.0 μg/m3 (8) 5.0 μg/m3 (21) 21.0
 
Sept. 21, 2020, 8 a.m. N/A N/A 5.1 ppb (5) N/A N/A 0.0 ppb (0) 11.0 ppb (8) 0.13 ppb (1) 8.0 μg/m3 (7) 5.1 μg/m3 (21) 21.0
 
Sept. 21, 2020, 7 a.m. N/A N/A 5.2 ppb (5) N/A N/A 0.0 ppb (0) 9.0 ppb (7) 0.18 ppb (2) 9.0 μg/m3 (8) 5.4 μg/m3 (23) 23.0
 
Sept. 21, 2020, 6 a.m. N/A N/A 5.2 ppb (5) N/A N/A 0.0 ppb (0) 8.0 ppb (6) 0.18 ppb (2) 9.0 μg/m3 (8) 5.7 μg/m3 (24) 24.0
 
Sept. 21, 2020, 5 a.m. N/A N/A 4.2 ppb (4) N/A N/A 0.0 ppb (0) 7.0 ppb (5) 0.17 ppb (2) 9.0 μg/m3 (8) 5.6 μg/m3 (23) 23.0
 
Sept. 21, 2020, 4 a.m. N/A N/A 3.5 ppb (3) N/A N/A 0.0 ppb (0) 9.0 ppb (7) 0.17 ppb (2) 10.0 μg/m3 (9) 6.0 μg/m3 (25) 25.0
 
Sept. 21, 2020, 3 a.m. N/A N/A 3.5 ppb (3) N/A N/A 0.0 ppb (0) 10.0 ppb (8) 0.18 ppb (2) 13.0 μg/m3 (12) 7.7 μg/m3 (32) 32.0
 
Sept. 21, 2020, 2 a.m. N/A N/A 3.5 ppb (3) N/A N/A 0.0 ppb (0) 11.0 ppb (8) 0.16 ppb (2) 13.0 μg/m3 (12) 7.9 μg/m3 (33) 33.0
 
Sept. 21, 2020, 1 a.m. N/A N/A 2.9 ppb (3) N/A N/A 0.0 ppb (0) 13.0 ppb (10) 0.17 ppb (2) 9.0 μg/m3 (8) 4.9 μg/m3 (20) 20.0
 
Sept. 21, 2020, midnight N/A N/A 2.5 ppb (2) N/A N/A 0.0 ppb (0) 18.0 ppb (14) 0.14 ppb (2) 14.0 μg/m3 (13) 4.4 μg/m3 (18) 18.0
 
Sept. 20, 2020, 11 p.m. N/A N/A 1.3 ppb (1) N/A N/A 0.0 ppb (0) 21.0 ppb (16) 0.15 ppb (2) 18.0 μg/m3 (16) 4.2 μg/m3 (18) 18.0
 
Sept. 20, 2020, 10 p.m. N/A N/A 1.0 ppb (1) N/A N/A 0.0 ppb (0) 27.0 ppb (21) 0.13 ppb (1) 20.0 μg/m3 (18) 3.9 μg/m3 (16) 21.0
 
Sept. 20, 2020, 9 p.m. N/A N/A 0.9 ppb (1) N/A N/A 0.0 ppb (0) 29.0 ppb (22) 0.12 ppb (1) 11.0 μg/m3 (10) 2.9 μg/m3 (12) 22.0
 
Sept. 20, 2020, 8 p.m. N/A N/A 0.8 ppb (1) N/A N/A 0.0 ppb (0) 30.0 ppb (23) 0.08 ppb (1) 6.0 μg/m3 (5) 2.4 μg/m3 (10) 23.0
 
Sept. 20, 2020, 7 p.m. N/A N/A 0.8 ppb (1) N/A N/A 0.0 ppb (0) 30.0 ppb (23) N/A 5.0 μg/m3 (5) 2.3 μg/m3 (10) 23.0
 
Sept. 20, 2020, 6 p.m. N/A N/A 0.9 ppb (1) N/A N/A N/A 29.0 ppb (22) 0.1 ppb (1) 6.0 μg/m3 (5) 2.3 μg/m3 (10) 22.0
 
Sept. 20, 2020, 5 p.m. N/A N/A 0.9 ppb (1) N/A N/A 0.0 ppb (0) 28.0 ppb (22) 0.1 ppb (1) 7.0 μg/m3 (6) 2.2 μg/m3 (9) 22.0
 
Sept. 20, 2020, 4 p.m. N/A N/A 1.0 ppb (1) N/A N/A 0.0 ppb (0) 28.0 ppb (22) 0.11 ppb (1) 8.0 μg/m3 (7) 2.1 μg/m3 (9) 22.0
 
Sept. 20, 2020, 3 p.m. N/A N/A 1.4 ppb (1) N/A N/A 0.0 ppb (0) 27.0 ppb (21) 0.1 ppb (1) 7.0 μg/m3 (6) 2.0 μg/m3 (8) 21.0
 
Sept. 20, 2020, 2 p.m. N/A N/A 2.1 ppb (2) N/A N/A 0.0 ppb (0) N/A 0.08 ppb (1) 7.0 μg/m3 (6) 2.5 μg/m3 (10) 10.0
 
Sept. 20, 2020, 1 p.m. N/A N/A 2.5 ppb (2) N/A N/A 0.0 ppb (0) 22.0 ppb (17) 0.12 ppb (1) 6.0 μg/m3 (5) 3.3 μg/m3 (14) 17.0
 
Sept. 20, 2020, noon N/A N/A 2.6 ppb (2) N/A N/A 0.0 ppb (0) 20.0 ppb (15) 0.13 ppb (1) 7.0 μg/m3 (6) 3.6 μg/m3 (15) 15.0
 
Sept. 20, 2020, 11 a.m. N/A N/A 2.6 ppb (2) N/A N/A 0.0 ppb (0) 17.0 ppb (13) 0.12 ppb (1) 7.0 μg/m3 (6) 3.8 μg/m3 (16) 16.0
 
Sept. 20, 2020, 10 a.m. N/A N/A 2.7 ppb (3) N/A N/A 0.0 ppb (0) 17.0 ppb (13) 0.12 ppb (1) 7.0 μg/m3 (6) 3.8 μg/m3 (16) 16.0
 
Sept. 20, 2020, 9 a.m. N/A N/A 3.0 ppb (3) N/A N/A 0.0 ppb (0) N/A 0.12 ppb (1) 7.0 μg/m3 (6) 3.9 μg/m3 (16) 16.0
 
Sept. 20, 2020, 8 a.m. N/A N/A 3.1 ppb (3) N/A N/A 0.0 ppb (0) 16.0 ppb (12) 0.1 ppb (1) 7.0 μg/m3 (6) 4.1 μg/m3 (17) 17.0
 
Sept. 20, 2020, 7 a.m. N/A N/A 3.0 ppb (3) N/A N/A 0.0 ppb (0) 14.0 ppb (11) N/A 8.0 μg/m3 (7) 4.4 μg/m3 (18) 18.0
 
Sept. 20, 2020, 6 a.m. N/A N/A 2.7 ppb (3) N/A N/A N/A 14.0 ppb (11) 0.14 ppb (2) 8.0 μg/m3 (7) 4.4 μg/m3 (18) 18.0
 
Sept. 20, 2020, 5 a.m. N/A N/A 2.6 ppb (2) N/A N/A N/A 16.0 ppb (12) 0.14 ppb (2) 8.0 μg/m3 (7) 4.4 μg/m3 (18) 18.0
 
Sept. 20, 2020, 4 a.m. N/A N/A 2.5 ppb (2) N/A N/A 0.0 ppb (0) 17.0 ppb (13) 0.13 ppb (1) 8.0 μg/m3 (7) 4.2 μg/m3 (18) 18.0
 
Sept. 20, 2020, 3 a.m. N/A N/A 2.6 ppb (2) N/A N/A 0.0 ppb (0) 17.0 ppb (13) 0.14 ppb (2) 7.0 μg/m3 (6) 4.3 μg/m3 (18) 18.0
 
Sept. 20, 2020, 2 a.m. N/A N/A 2.5 ppb (2) N/A N/A 0.0 ppb (0) 17.0 ppb (13) 0.12 ppb (1) 7.0 μg/m3 (6) 4.0 μg/m3 (17) 17.0
 
Sept. 20, 2020, 1 a.m. N/A N/A 2.0 ppb (2) N/A N/A 0.0 ppb (0) 15.0 ppb (12) 0.14 ppb (2) 7.0 μg/m3 (6) 3.5 μg/m3 (15) 15.0
 
Sept. 20, 2020, midnight N/A N/A 1.5 ppb (1) N/A N/A 0.0 ppb (0) 18.0 ppb (14) 0.14 ppb (2) 8.0 μg/m3 (7) 3.6 μg/m3 (15) 15.0
 
Sept. 19, 2020, 11 p.m. N/A N/A 1.0 ppb (1) N/A N/A 0.0 ppb (0) 21.0 ppb (16) 0.13 ppb (1) 7.0 μg/m3 (6) 2.9 μg/m3 (12) 16.0
 
Sept. 19, 2020, 10 p.m. N/A N/A 0.8 ppb (1) N/A N/A 0.0 ppb (0) 27.0 ppb (21) 0.11 ppb (1) 6.0 μg/m3 (5) 2.2 μg/m3 (9) 21.0
 
Sept. 19, 2020, 9 p.m. N/A N/A 0.9 ppb (1) N/A N/A 0.0 ppb (0) 29.0 ppb (22) 0.11 ppb (1) 6.0 μg/m3 (5) 2.1 μg/m3 (9) 22.0
 
Sept. 19, 2020, 8 p.m. N/A N/A 0.9 ppb (1) N/A N/A 0.0 ppb (0) 30.0 ppb (23) 0.08 ppb (1) 4.0 μg/m3 (4) 1.6 μg/m3 (7) 23.0
 
Sept. 19, 2020, 7 p.m. N/A N/A 1.0 ppb (1) N/A N/A 0.0 ppb (0) 29.0 ppb (22) 0.1 ppb (1) 5.0 μg/m3 (5) 1.6 μg/m3 (7) 22.0
 
Sept. 19, 2020, 6 p.m. N/A N/A 1.1 ppb (1) N/A N/A 0.0 ppb (0) 30.0 ppb (23) 0.1 ppb (1) 5.0 μg/m3 (5) 1.6 μg/m3 (7) 23.0
 
Sept. 19, 2020, 5 p.m. N/A N/A 1.1 ppb (1) N/A N/A 0.0 ppb (0) 29.0 ppb (22) 0.1 ppb (1) 5.0 μg/m3 (5) 1.5 μg/m3 (6) 22.0
 
Sept. 19, 2020, 4 p.m. N/A N/A 1.3 ppb (1) N/A N/A 0.0 ppb (0) 27.0 ppb (21) 0.1 ppb (1) 6.0 μg/m3 (5) 1.5 μg/m3 (6) 21.0
 
Sept. 19, 2020, 3 p.m. N/A N/A 1.5 ppb (1) N/A N/A 0.0 ppb (0) 26.0 ppb (20) 0.1 ppb (1) 6.0 μg/m3 (5) 1.6 μg/m3 (7) 20.0
 
Sept. 19, 2020, 2 p.m. N/A N/A 1.7 ppb (2) N/A N/A 0.0 ppb (0) 24.0 ppb (18) 0.08 ppb (1) 7.0 μg/m3 (6) 1.7 μg/m3 (7) 18.0
 
Sept. 19, 2020, 1 p.m. N/A N/A 1.9 ppb (2) N/A N/A 0.0 ppb (0) 21.0 ppb (16) 0.11 ppb (1) 5.0 μg/m3 (5) 2.0 μg/m3 (8) 16.0
 
Sept. 19, 2020, noon N/A N/A 1.9 ppb (2) N/A N/A 0.0 ppb (0) 18.0 ppb (14) 0.12 ppb (1) 6.0 μg/m3 (5) 2.1 μg/m3 (9) 14.0
 
Sept. 19, 2020, 11 a.m. N/A N/A 1.7 ppb (2) N/A N/A 0.0 ppb (0) 17.0 ppb (13) 0.12 ppb (1) 6.0 μg/m3 (5) 2.2 μg/m3 (9) 13.0
 
Sept. 19, 2020, 10 a.m. N/A N/A 1.6 ppb (1) N/A N/A 0.0 ppb (0) 14.0 ppb (11) 0.11 ppb (1) 6.0 μg/m3 (5) 2.2 μg/m3 (9) 11.0
 
Sept. 19, 2020, 9 a.m. N/A N/A 1.4 ppb (1) N/A N/A 0.0 ppb (0) 16.0 ppb (12) 0.11 ppb (1) 6.0 μg/m3 (5) 2.3 μg/m3 (10) 12.0
 
Sept. 19, 2020, 8 a.m. N/A N/A 1.3 ppb (1) N/A N/A 0.0 ppb (0) 19.0 ppb (15) 0.09 ppb (1) 6.0 μg/m3 (5) 2.3 μg/m3 (10) 15.0
 
Sept. 19, 2020, 7 a.m. N/A N/A 1.2 ppb (1) N/A N/A 0.0 ppb (0) 20.0 ppb (15) 0.11 ppb (1) 6.0 μg/m3 (5) 2.2 μg/m3 (9) 15.0
 
Sept. 19, 2020, 6 a.m. N/A N/A 1.1 ppb (1) N/A N/A 0.0 ppb (0) 22.0 ppb (17) 0.1 ppb (1) 8.0 μg/m3 (7) 2.2 μg/m3 (9) 17.0
 
Sept. 19, 2020, 5 a.m. N/A N/A 1.0 ppb (1) N/A N/A 0.0 ppb (0) 23.0 ppb (18) 0.11 ppb (1) 8.0 μg/m3 (7) 2.3 μg/m3 (10) 18.0
 
Sept. 19, 2020, 4 a.m. N/A N/A 0.9 ppb (1) N/A N/A 0.0 ppb (0) 25.0 ppb (19) 0.11 ppb (1) 8.0 μg/m3 (7) 2.3 μg/m3 (10) 19.0
 
Sept. 19, 2020, 3 a.m. N/A N/A 0.9 ppb (1) N/A N/A 1.0 ppb (1) 25.0 ppb (19) 0.11 ppb (1) 8.0 μg/m3 (7) 2.4 μg/m3 (10) 19.0
 
Sept. 19, 2020, 2 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 26.0 ppb (20) 0.08 ppb (1) 9.0 μg/m3 (8) 2.4 μg/m3 (10) 20.0
 
Sept. 19, 2020, 1 a.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 27.0 ppb (21) 0.11 ppb (1) 11.0 μg/m3 (10) 2.4 μg/m3 (10) 21.0
 
Sept. 19, 2020, midnight N/A N/A 1.0 ppb (1) N/A N/A 0.0 ppb (0) 28.0 ppb (22) 0.1 ppb (1) 10.0 μg/m3 (9) 2.2 μg/m3 (9) 22.0
 
Sept. 18, 2020, 11 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 30.0 ppb (23) 0.11 ppb (1) 9.0 μg/m3 (8) 2.1 μg/m3 (9) 23.0
 
Sept. 18, 2020, 10 p.m. N/A N/A 1.2 ppb (1) N/A N/A 0.0 ppb (0) 32.0 ppb (25) 0.11 ppb (1) 9.0 μg/m3 (8) 2.7 μg/m3 (11) 25.0
 
Sept. 18, 2020, 9 p.m. N/A N/A 1.5 ppb (1) N/A N/A 0.0 ppb (0) 31.0 ppb (24) 0.14 ppb (2) 20.0 μg/m3 (18) 5.9 μg/m3 (25) 25.0
 
Sept. 18, 2020, 8 p.m. N/A N/A 3.4 ppb (3) N/A N/A 0.0 ppb (0) 26.0 ppb (20) 0.62 ppb (7) 20.0 μg/m3 (18) 6.9 μg/m3 (29) 29.0
 
Sept. 18, 2020, 7 p.m. N/A N/A 1.5 ppb (1) N/A N/A 0.0 ppb (0) 25.0 ppb (19) 0.13 ppb (1) 12.0 μg/m3 (11) 5.4 μg/m3 (23) 23.0
 
Sept. 18, 2020, 6 p.m. N/A N/A 1.4 ppb (1) N/A N/A 0.0 ppb (0) 24.0 ppb (18) 0.13 ppb (1) 11.0 μg/m3 (10) 4.5 μg/m3 (19) 19.0
 
Sept. 18, 2020, 5 p.m. N/A N/A 1.4 ppb (1) N/A N/A 0.0 ppb (0) 24.0 ppb (18) 0.12 ppb (1) 11.0 μg/m3 (10) 4.0 μg/m3 (17) 18.0
 
Sept. 18, 2020, 4 p.m. N/A N/A 1.6 ppb (1) N/A N/A 0.0 ppb (0) 24.0 ppb (18) 0.11 ppb (1) 10.0 μg/m3 (9) 4.1 μg/m3 (17) 18.0
 
Sept. 18, 2020, 3 p.m. N/A N/A 2.2 ppb (2) N/A N/A 0.0 ppb (0) 24.0 ppb (18) 0.11 ppb (1) 10.0 μg/m3 (9) 4.1 μg/m3 (17) 18.0
 
Sept. 18, 2020, 2 p.m. N/A N/A N/A N/A N/A 0.0 ppb (0) 23.0 ppb (18) 0.09 ppb (1) 10.0 μg/m3 (9) 4.4 μg/m3 (18) 18.0
 
Sept. 18, 2020, 1 p.m. N/A N/A 1.5 ppb (1) N/A N/A 0.0 ppb (0) 21.0 ppb (16) 0.11 ppb (1) 10.0 μg/m3 (9) 5.1 μg/m3 (21) 21.0
 
Sept. 18, 2020, noon N/A N/A 1.5 ppb (1) N/A N/A 0.0 ppb (0) 20.0 ppb (15) 0.12 ppb (1) 10.0 μg/m3 (9) 5.7 μg/m3 (24) 24.0
 
Sept. 18, 2020, 11 a.m. N/A N/A 1.4 ppb (1) N/A N/A 0.0 ppb (0) 21.0 ppb (16) 0.13 ppb (1) 11.0 μg/m3 (10) 6.5 μg/m3 (27) 27.0
 
Sept. 18, 2020, 10 a.m. N/A N/A 1.5 ppb (1) N/A N/A 0.0 ppb (0) 21.0 ppb (16) 0.14 ppb (2) 13.0 μg/m3 (12) 7.3 μg/m3 (30) 30.0
 
Sept. 18, 2020, 9 a.m. N/A N/A 1.6 ppb (1) N/A N/A 0.0 ppb (0) 20.0 ppb (15) 0.14 ppb (2) 13.0 μg/m3 (12) 7.7 μg/m3 (32) 32.0
 
Sept. 18, 2020, 8 a.m. N/A N/A 1.7 ppb (2) N/A N/A 0.0 ppb (0) 21.0 ppb (16) 0.13 ppb (1) 14.0 μg/m3 (13) 8.5 μg/m3 (35) 35.0
 
Sept. 18, 2020, 7 a.m. N/A N/A 1.9 ppb (2) N/A N/A 0.0 ppb (0) 22.0 ppb (17) 0.16 ppb (2) 15.0 μg/m3 (14) 8.8 μg/m3 (37) 37.0
 
Sept. 18, 2020, 6 a.m. N/A N/A 2.1 ppb (2) N/A N/A 0.0 ppb (0) 21.0 ppb (16) 0.17 ppb (2) 16.0 μg/m3 (15) 9.1 μg/m3 (38) 38.0
 
Sept. 18, 2020, 5 a.m. N/A N/A 2.2 ppb (2) N/A N/A 0.0 ppb (0) 21.0 ppb (16) 0.17 ppb (2) 17.0 μg/m3 (15) 9.1 μg/m3 (38) 38.0
 
Sept. 18, 2020, 4 a.m. N/A N/A 2.4 ppb (2) N/A N/A 0.0 ppb (0) 22.0 ppb (17) 0.17 ppb (2) 16.0 μg/m3 (15) 8.3 μg/m3 (35) 35.0
 
Sept. 18, 2020, 3 a.m. N/A N/A 2.7 ppb (3) N/A N/A 0.0 ppb (0) 22.0 ppb (17) 0.17 ppb (2) 14.0 μg/m3 (13) 7.4 μg/m3 (31) 31.0
 
Sept. 18, 2020, 2 a.m. N/A N/A 3.0 ppb (3) N/A N/A 0.0 ppb (0) 24.0 ppb (18) 0.14 ppb (2) 13.0 μg/m3 (12) 6.6 μg/m3 (28) 28.0
 
Sept. 18, 2020, 1 a.m. N/A N/A 3.1 ppb (3) N/A N/A 0.0 ppb (0) 24.0 ppb (18) 0.17 ppb (2) 12.0 μg/m3 (11) 6.4 μg/m3 (27) 27.0
 
Sept. 18, 2020, midnight N/A N/A 3.0 ppb (3) N/A N/A 0.0 ppb (0) 26.0 ppb (20) 0.17 ppb (2) 14.0 μg/m3 (13) 7.0 μg/m3 (29) 29.0
 
Sept. 17, 2020, 11 p.m. N/A N/A 2.9 ppb (3) N/A N/A 0.0 ppb (0) 28.0 ppb (22) 0.17 ppb (2) 16.0 μg/m3 (15) 7.2 μg/m3 (30) 30.0
 
Sept. 17, 2020, 10 p.m. N/A N/A 2.6 ppb (2) N/A N/A 0.0 ppb (0) 31.0 ppb (24) 0.17 ppb (2) 15.0 μg/m3 (14) 7.0 μg/m3 (29) 29.0
 
Sept. 17, 2020, 9 p.m. N/A N/A 2.5 ppb (2) N/A N/A 0.0 ppb (0) 35.0 ppb (27) 0.16 ppb (2) 13.0 μg/m3 (12) 6.2 μg/m3 (26) 27.0
 
Sept. 17, 2020, 8 p.m. N/A N/A 2.6 ppb (2) N/A N/A 0.0 ppb (0) 42.0 ppb (32) 0.11 ppb (1) 12.0 μg/m3 (11) 6.3 μg/m3 (26) 32.0
 
Sept. 17, 2020, 7 p.m. N/A N/A 2.8 ppb (3) N/A N/A 0.0 ppb (0) 45.0 ppb (35) 0.15 ppb (2) 13.0 μg/m3 (12) 6.6 μg/m3 (28) 35.0
 
Sept. 17, 2020, 6 p.m. N/A N/A 2.9 ppb (3) N/A N/A 0.0 ppb (0) 44.0 ppb (34) 0.16 ppb (2) 14.0 μg/m3 (13) 6.6 μg/m3 (28) 34.0
 
Sept. 17, 2020, 5 p.m. N/A N/A 3.0 ppb (3) N/A N/A 0.0 ppb (0) 43.0 ppb (33) 0.14 ppb (2) 13.0 μg/m3 (12) 6.2 μg/m3 (26) 33.0
 
Sept. 17, 2020, 4 p.m. N/A N/A 3.4 ppb (3) N/A N/A 0.0 ppb (0) 39.0 ppb (30) 0.14 ppb (2) 12.0 μg/m3 (11) 5.9 μg/m3 (25) 30.0
 
Sept. 17, 2020, 3 p.m. N/A N/A 4.1 ppb (4) N/A N/A 0.0 ppb (0) 35.0 ppb (27) 0.14 ppb (2) 12.0 μg/m3 (11) 5.6 μg/m3 (23) 27.0
 
Sept. 17, 2020, 2 p.m. N/A N/A 4.6 ppb (4) N/A N/A 0.0 ppb (0) 28.0 ppb (22) 0.13 ppb (1) 12.0 μg/m3 (11) 5.4 μg/m3 (23) 23.0
 
Sept. 17, 2020, 1 p.m. N/A N/A 5.0 ppb (5) N/A N/A 0.0 ppb (0) 23.0 ppb (18) 0.17 ppb (2) 17.0 μg/m3 (15) 5.6 μg/m3 (23) 23.0
 
Sept. 17, 2020, noon N/A N/A 3.9 ppb (4) N/A N/A 1.0 ppb (1) 20.0 ppb (15) 0.16 ppb (2) 12.0 μg/m3 (11) 4.8 μg/m3 (20) 20.0
 
Sept. 17, 2020, 11 a.m. N/A N/A 3.1 ppb (3) N/A N/A 0.0 ppb (0) 19.0 ppb (15) 0.15 ppb (2) 9.0 μg/m3 (8) 4.3 μg/m3 (18) 18.0
 
Sept. 17, 2020, 10 a.m. N/A N/A 2.7 ppb (3) N/A N/A 0.0 ppb (0) 20.0 ppb (15) 0.14 ppb (2) 9.0 μg/m3 (8) 4.2 μg/m3 (18) 18.0
 
Sept. 17, 2020, 9 a.m. N/A N/A 2.3 ppb (2) N/A N/A 0.0 ppb (0) 22.0 ppb (17) 0.13 ppb (1) 9.0 μg/m3 (8) 4.0 μg/m3 (17) 17.0
 
Sept. 17, 2020, 8 a.m. N/A N/A 2.0 ppb (2) N/A N/A 0.0 ppb (0) 24.0 ppb (18) 0.1 ppb (1) 8.0 μg/m3 (7) 3.9 μg/m3 (16) 18.0
 
Sept. 17, 2020, 7 a.m. N/A N/A 2.0 ppb (2) N/A N/A 0.0 ppb (0) 27.0 ppb (21) 0.12 ppb (1) 8.0 μg/m3 (7) 3.8 μg/m3 (16) 21.0
 
Sept. 17, 2020, 6 a.m. N/A N/A 2.1 ppb (2) N/A N/A 0.0 ppb (0) 25.0 ppb (19) 0.12 ppb (1) 9.0 μg/m3 (8) 3.9 μg/m3 (16) 19.0
 
Sept. 17, 2020, 5 a.m. N/A N/A 2.1 ppb (2) N/A N/A 0.0 ppb (0) 27.0 ppb (21) 0.12 ppb (1) 9.0 μg/m3 (8) 4.0 μg/m3 (17) 21.0
 
Sept. 17, 2020, 4 a.m. N/A N/A 2.3 ppb (2) N/A N/A 0.0 ppb (0) 28.0 ppb (22) 0.12 ppb (1) 9.0 μg/m3 (8) 3.9 μg/m3 (16) 22.0
 
Sept. 17, 2020, 3 a.m. N/A N/A 2.4 ppb (2) N/A N/A 0.0 ppb (0) 29.0 ppb (22) 0.12 ppb (1) 10.0 μg/m3 (9) 4.0 μg/m3 (17) 22.0
 
Sept. 17, 2020, 2 a.m. N/A N/A 2.6 ppb (2) N/A N/A 1.0 ppb (1) 30.0 ppb (23) 0.09 ppb (1) 11.0 μg/m3 (10) 4.5 μg/m3 (19) 23.0
 
Sept. 17, 2020, 1 a.m. N/A N/A 2.6 ppb (2) N/A N/A 1.0 ppb (1) 31.0 ppb (24) 0.12 ppb (1) 12.0 μg/m3 (11) 5.1 μg/m3 (21) 24.0
 
Sept. 17, 2020, midnight N/A N/A 2.7 ppb (3) N/A N/A 0.0 ppb (0) 34.0 ppb (26) 0.12 ppb (1) 11.0 μg/m3 (10) 4.6 μg/m3 (19) 26.0
 
Sept. 16, 2020, 11 p.m. N/A N/A 2.8 ppb (3) N/A N/A 0.0 ppb (0) 38.0 ppb (29) 0.13 ppb (1) 12.0 μg/m3 (11) 4.2 μg/m3 (18) 29.0
 
Sept. 16, 2020, 10 p.m. N/A N/A 2.8 ppb (3) N/A N/A 0.0 ppb (0) 39.0 ppb (30) 0.13 ppb (1) 12.0 μg/m3 (11) 4.1 μg/m3 (17) 30.0
 
Sept. 16, 2020, 9 p.m. N/A N/A 2.7 ppb (3) N/A N/A 0.0 ppb (0) 41.0 ppb (32) 0.13 ppb (1) 12.0 μg/m3 (11) 4.0 μg/m3 (17) 32.0
 
Sept. 16, 2020, 8 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 13.0 μg/m3 (12) 3.9 μg/m3 (16) 16.0
 
Sept. 16, 2020, 7 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 13.0 μg/m3 (12) 3.9 μg/m3 (16) 16.0
 
Sept. 16, 2020, 6 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 16.0 μg/m3 (15) 3.9 μg/m3 (16) 16.0
 
Sept. 16, 2020, 5 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 14.0 μg/m3 (13) 3.9 μg/m3 (16) 16.0
 
Sept. 16, 2020, 4 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 17.0 μg/m3 (15) 4.0 μg/m3 (17) 17.0
 
Sept. 16, 2020, 3 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 17.0 μg/m3 (15) 4.2 μg/m3 (18) 18.0
 
Sept. 16, 2020, 2 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 11.0 μg/m3 (10) 4.4 μg/m3 (18) 18.0
 
Sept. 16, 2020, 1 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 11.0 μg/m3 (10) 4.5 μg/m3 (19) 19.0
 
Sept. 16, 2020, noon N/A N/A N/A N/A N/A N/A N/A N/A 11.0 μg/m3 (10) 4.6 μg/m3 (19) 19.0
 
Sept. 16, 2020, 11 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 11.0 μg/m3 (10) 4.4 μg/m3 (18) 18.0