ID: 477

AQSQID: 250092006

Site Name: Lynn

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

Updated: March 1, 2021, 3:32 p.m.

Location: Lynn (Pine Hill), MA

Reporting: True, Located: True

Current AQI: 27.0

Lynn (Pine Hill) MA, US: 42.474701, -70.971901

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
March 1, 2021, 1 p.m. N/A 1.1 ppb (2) 13.3 ppb (13) 11.0 ppb (11) N/A N/A 29.0 ppb (27) N/A N/A 6.0 μg/m3 (25) 27.0
 
March 1, 2021, noon N/A 0.7 ppb (1) 11.7 ppb (12) 11.0 ppb (11) N/A N/A 31.0 ppb (29) N/A N/A 3.0 μg/m3 (13) 29.0
 
March 1, 2021, 11 a.m. N/A 0.4 ppb (1) 7.1 ppb (7) 7.0 ppb (7) N/A N/A 36.0 ppb (34) N/A N/A 2.0 μg/m3 (9) 34.0
 
March 1, 2021, 10 a.m. N/A 0.4 ppb (1) 5.8 ppb (6) 5.0 ppb (5) N/A N/A 37.0 ppb (35) N/A N/A -2.0 μg/m3 (0) 35.0
 
March 1, 2021, 9 a.m. N/A 0.2 ppb (1) 4.1 ppb (4) 4.0 ppb (4) N/A N/A 38.0 ppb (36) N/A N/A 2.0 μg/m3 (9) 36.0
 
March 1, 2021, 8 a.m. N/A 0.2 ppb (1) 3.8 ppb (4) 3.0 ppb (3) N/A N/A 39.0 ppb (37) N/A N/A 2.0 μg/m3 (9) 37.0
 
March 1, 2021, 7 a.m. N/A 0.2 ppb (1) 3.4 ppb (4) 3.0 ppb (3) N/A N/A 39.0 ppb (37) N/A N/A 3.0 μg/m3 (13) 37.0
 
March 1, 2021, 6 a.m. N/A 0.1 ppb (1) 3.5 ppb (4) 3.0 ppb (3) N/A N/A 39.0 ppb (37) N/A N/A 6.0 μg/m3 (25) 37.0
 
March 1, 2021, 5 a.m. N/A 0.2 ppb (1) 3.3 ppb (4) 3.0 ppb (3) N/A N/A 39.0 ppb (37) N/A N/A 7.0 μg/m3 (30) 37.0
 
March 1, 2021, 4 a.m. N/A 0.1 ppb (1) 4.5 ppb (5) 3.0 ppb (3) N/A N/A 37.0 ppb (35) N/A N/A 5.0 μg/m3 (21) 35.0
 
March 1, 2021, 3 a.m. N/A 0.4 ppb (1) 6.5 ppb (7) 5.0 ppb (5) N/A N/A 34.0 ppb (32) N/A N/A 6.0 μg/m3 (25) 32.0
 
March 1, 2021, 2 a.m. N/A 0.4 ppb (1) 7.6 ppb (8) 6.0 ppb (6) N/A N/A 33.0 ppb (31) N/A N/A 6.0 μg/m3 (25) 31.0
 
March 1, 2021, 1 a.m. N/A 0.5 ppb (1) 8.3 ppb (8) 6.0 ppb (6) N/A N/A 32.0 ppb (30) N/A N/A 3.0 μg/m3 (13) 30.0
 
March 1, 2021, midnight N/A 0.3 ppb (1) 7.5 ppb (8) 6.0 ppb (6) N/A N/A 33.0 ppb (31) N/A N/A 3.0 μg/m3 (13) 31.0
 
Feb. 28, 2021, 11 p.m. N/A 0.3 ppb (1) 8.4 ppb (8) 6.0 ppb (6) N/A N/A 33.0 ppb (31) N/A N/A 6.0 μg/m3 (25) 31.0
 
Feb. 28, 2021, 10 p.m. N/A 0.6 ppb (1) 13.5 ppb (13) 11.0 ppb (11) N/A N/A 29.0 ppb (27) N/A N/A 10.0 μg/m3 (42) 42.0
 
Feb. 28, 2021, 9 p.m. N/A 0.9 ppb (1) 14.7 ppb (14) 12.0 ppb (12) N/A N/A 29.0 ppb (27) N/A N/A 8.0 μg/m3 (34) 34.0
 
Feb. 28, 2021, 8 p.m. N/A 0.5 ppb (1) 8.2 ppb (8) 6.0 ppb (6) N/A N/A 34.0 ppb (32) N/A N/A 11.0 μg/m3 (46) 46.0
 
Feb. 28, 2021, 7 p.m. N/A 0.3 ppb (1) 4.7 ppb (5) 3.0 ppb (3) N/A N/A 38.0 ppb (36) N/A N/A 9.0 μg/m3 (38) 38.0
 
Feb. 28, 2021, 6 p.m. N/A 0.4 ppb (1) 4.2 ppb (4) 2.0 ppb (2) N/A N/A 38.0 ppb (36) N/A N/A 5.0 μg/m3 (21) 36.0
 
Feb. 28, 2021, 5 p.m. N/A 0.5 ppb (1) 4.1 ppb (4) 2.0 ppb (2) N/A N/A 37.0 ppb (35) N/A N/A 4.0 μg/m3 (17) 35.0
 
Feb. 28, 2021, 4 p.m. N/A 0.6 ppb (1) 4.8 ppb (5) 3.0 ppb (3) N/A N/A 35.0 ppb (33) N/A N/A 7.0 μg/m3 (30) 33.0
 
Feb. 28, 2021, 3 p.m. N/A 1.7 ppb (2) 9.2 ppb (9) 6.0 ppb (6) N/A N/A 31.0 ppb (29) N/A N/A 8.0 μg/m3 (34) 34.0
 
Feb. 28, 2021, 2 p.m. N/A 4.1 ppb (4) 18.6 ppb (18) 12.0 ppb (12) N/A N/A 23.0 ppb (22) N/A N/A 9.0 μg/m3 (38) 38.0
 
Feb. 28, 2021, 1 p.m. N/A 2.5 ppb (3) 15.6 ppb (15) 11.0 ppb (11) N/A N/A 23.0 ppb (22) N/A N/A 6.0 μg/m3 (25) 25.0
 
Feb. 28, 2021, noon N/A 0.7 ppb (1) 9.5 ppb (9) 7.0 ppb (7) N/A N/A 27.0 ppb (25) N/A N/A 8.0 μg/m3 (34) 34.0
 
Feb. 28, 2021, 11 a.m. N/A 0.3 ppb (1) 13.2 ppb (13) 11.0 ppb (11) N/A N/A 23.0 ppb (22) N/A N/A 9.0 μg/m3 (38) 38.0
 
Feb. 28, 2021, 10 a.m. N/A 0.1 ppb (1) 15.4 ppb (15) 13.0 ppb (13) N/A N/A 22.0 ppb (21) N/A N/A 5.0 μg/m3 (21) 21.0
 
Feb. 28, 2021, 9 a.m. N/A 0.1 ppb (1) 9.4 ppb (9) 9.0 ppb (9) N/A N/A 28.0 ppb (26) N/A N/A 3.0 μg/m3 (13) 26.0
 
Feb. 28, 2021, 8 a.m. N/A 0.0 ppb (0) 3.2 ppb (4) 2.0 ppb (2) N/A N/A N/A N/A N/A 1.0 μg/m3 (5) 5.0
 
Feb. 28, 2021, 7 a.m. N/A 0.0 ppb (0) 4.3 ppb (5) 3.0 ppb (3) N/A N/A 35.0 ppb (33) N/A N/A 3.0 μg/m3 (13) 33.0
 
Feb. 28, 2021, 6 a.m. N/A 0.0 ppb (0) 5.0 ppb (5) N/A N/A N/A 34.0 ppb (32) N/A N/A 5.0 μg/m3 (21) 32.0
 
Feb. 28, 2021, 5 a.m. N/A 0.1 ppb (1) 6.3 ppb (6) N/A N/A N/A 32.0 ppb (30) N/A N/A 6.0 μg/m3 (25) 30.0
 
Feb. 28, 2021, 4 a.m. N/A 0.0 ppb (0) 6.0 ppb (6) 5.0 ppb (5) N/A N/A 32.0 ppb (30) N/A N/A 5.0 μg/m3 (21) 30.0
 
Feb. 28, 2021, 3 a.m. N/A 0.1 ppb (1) 6.8 ppb (7) 5.0 ppb (5) N/A N/A 31.0 ppb (29) N/A N/A 5.0 μg/m3 (21) 29.0
 
Feb. 28, 2021, 2 a.m. N/A 0.1 ppb (1) 11.6 ppb (11) 9.0 ppb (9) N/A N/A 23.0 ppb (22) N/A N/A 8.0 μg/m3 (34) 34.0
 
Feb. 28, 2021, 1 a.m. N/A 0.2 ppb (1) 14.5 ppb (14) 11.0 ppb (11) N/A N/A 21.0 ppb (20) N/A N/A 11.0 μg/m3 (46) 46.0
 
Feb. 28, 2021, midnight N/A N/A N/A 10.0 ppb (10) N/A N/A 24.0 ppb (23) N/A N/A 9.0 μg/m3 (38) 38.0
 
Feb. 27, 2021, 11 p.m. N/A N/A N/A 13.0 ppb (13) N/A N/A 21.0 ppb (20) N/A N/A 16.0 μg/m3 (60) 60.0
 
Feb. 27, 2021, 10 p.m. N/A N/A N/A 11.0 ppb (11) N/A N/A 29.0 ppb (27) N/A N/A 10.0 μg/m3 (42) 42.0
 
Feb. 27, 2021, 9 p.m. N/A 0.4 ppb (1) 11.3 ppb (11) 10.0 ppb (10) N/A N/A 29.0 ppb (27) N/A N/A 6.0 μg/m3 (25) 27.0
 
Feb. 27, 2021, 8 p.m. N/A 0.4 ppb (1) 10.0 ppb (10) 9.0 ppb (9) N/A N/A 30.0 ppb (28) N/A N/A 5.0 μg/m3 (21) 28.0
 
Feb. 27, 2021, 7 p.m. N/A 0.7 ppb (1) 9.8 ppb (10) 8.0 ppb (8) N/A N/A 29.0 ppb (27) N/A N/A 3.0 μg/m3 (13) 27.0
 
Feb. 27, 2021, 6 p.m. N/A 0.5 ppb (1) 5.8 ppb (6) 5.0 ppb (5) N/A N/A 33.0 ppb (31) N/A N/A 1.0 μg/m3 (5) 31.0
 
Feb. 27, 2021, 5 p.m. N/A 0.4 ppb (1) 4.0 ppb (4) 3.0 ppb (3) N/A N/A 35.0 ppb (33) N/A N/A 4.0 μg/m3 (17) 33.0
 
Feb. 27, 2021, 4 p.m. N/A 0.5 ppb (1) 4.4 ppb (5) 4.0 ppb (4) N/A N/A 35.0 ppb (33) N/A N/A 5.0 μg/m3 (21) 33.0
 
Feb. 27, 2021, 3 p.m. N/A 0.6 ppb (1) 5.4 ppb (6) 4.0 ppb (4) N/A N/A 34.0 ppb (32) N/A N/A 3.0 μg/m3 (13) 32.0
 
Feb. 27, 2021, 2 p.m. N/A 0.8 ppb (1) 8.4 ppb (8) 6.0 ppb (6) N/A N/A 31.0 ppb (29) N/A N/A 2.0 μg/m3 (9) 29.0
 
Feb. 27, 2021, 1 p.m. N/A 0.7 ppb (1) 7.6 ppb (8) 6.0 ppb (6) N/A N/A 31.0 ppb (29) N/A N/A 3.0 μg/m3 (13) 29.0
 
Feb. 27, 2021, noon N/A 0.3 ppb (1) 6.3 ppb (6) 4.0 ppb (4) N/A N/A 33.0 ppb (31) N/A N/A 5.0 μg/m3 (21) 31.0
 
Feb. 27, 2021, 11 a.m. N/A 0.1 ppb (1) 6.4 ppb (7) 5.0 ppb (5) N/A N/A 33.0 ppb (31) N/A N/A 6.0 μg/m3 (25) 31.0
 
Feb. 27, 2021, 10 a.m. N/A 0.1 ppb (1) 6.0 ppb (6) 4.0 ppb (4) N/A N/A 33.0 ppb (31) N/A N/A 4.0 μg/m3 (17) 31.0
 
Feb. 27, 2021, 9 a.m. N/A 0.1 ppb (1) 5.7 ppb (6) 4.0 ppb (4) N/A N/A 34.0 ppb (32) N/A N/A 5.0 μg/m3 (21) 32.0
 
Feb. 27, 2021, 8 a.m. N/A 0.0 ppb (0) 5.8 ppb (6) 4.0 ppb (4) N/A N/A 34.0 ppb (32) N/A N/A 7.0 μg/m3 (30) 32.0
 
Feb. 27, 2021, 7 a.m. N/A 0.0 ppb (0) 5.8 ppb (6) 4.0 ppb (4) N/A N/A 35.0 ppb (33) N/A N/A 7.0 μg/m3 (30) 33.0
 
Feb. 27, 2021, 6 a.m. N/A 0.1 ppb (1) 6.8 ppb (7) 5.0 ppb (5) N/A N/A 35.0 ppb (33) N/A N/A 4.0 μg/m3 (17) 33.0
 
Feb. 27, 2021, 5 a.m. N/A 0.1 ppb (1) 8.5 ppb (9) 6.0 ppb (6) N/A N/A 32.0 ppb (30) N/A N/A 6.0 μg/m3 (25) 30.0
 
Feb. 27, 2021, 4 a.m. N/A 0.1 ppb (1) 11.0 ppb (11) 7.0 ppb (7) N/A N/A 29.0 ppb (27) N/A N/A 8.0 μg/m3 (34) 34.0
 
Feb. 27, 2021, 3 a.m. N/A 0.2 ppb (1) 10.3 ppb (10) 7.0 ppb (7) N/A N/A 30.0 ppb (28) N/A N/A 7.0 μg/m3 (30) 30.0
 
Feb. 27, 2021, 2 a.m. N/A 0.2 ppb (1) 9.3 ppb (9) 7.0 ppb (7) N/A N/A 31.0 ppb (29) N/A N/A 3.0 μg/m3 (13) 29.0
 
Feb. 27, 2021, 1 a.m. N/A 0.2 ppb (1) 6.7 ppb (7) 5.0 ppb (5) N/A N/A 35.0 ppb (33) N/A N/A 3.0 μg/m3 (13) 33.0
 
Feb. 27, 2021, midnight N/A 0.3 ppb (1) 7.5 ppb (8) 6.0 ppb (6) N/A N/A 35.0 ppb (33) N/A N/A 0.0 μg/m3 (0) 33.0
 
Feb. 26, 2021, 11 p.m. N/A 0.4 ppb (1) 8.6 ppb (9) 7.0 ppb (7) N/A N/A 35.0 ppb (33) N/A N/A 0.0 μg/m3 (0) 33.0
 
Feb. 26, 2021, 10 p.m. N/A 0.3 ppb (1) 7.8 ppb (8) 6.0 ppb (6) N/A N/A 37.0 ppb (35) N/A N/A 4.0 μg/m3 (17) 35.0
 
Feb. 26, 2021, 9 p.m. N/A 0.9 ppb (1) 9.7 ppb (10) 7.0 ppb (7) N/A N/A 38.0 ppb (36) N/A N/A 4.0 μg/m3 (17) 36.0
 
Feb. 26, 2021, 8 p.m. N/A 0.8 ppb (1) 5.7 ppb (6) 4.0 ppb (4) N/A N/A 41.0 ppb (38) N/A N/A 4.0 μg/m3 (17) 38.0
 
Feb. 26, 2021, 7 p.m. N/A 0.4 ppb (1) 3.1 ppb (3) N/A N/A N/A 44.0 ppb (41) N/A N/A 5.0 μg/m3 (21) 41.0
 
Feb. 26, 2021, 6 p.m. N/A 0.4 ppb (1) 2.7 ppb (3) N/A N/A N/A 43.0 ppb (40) N/A N/A 4.0 μg/m3 (17) 40.0
 
Feb. 26, 2021, 5 p.m. N/A N/A N/A 1.0 ppb (1) N/A N/A 42.0 ppb (39) N/A N/A 5.0 μg/m3 (21) 39.0
 
Feb. 26, 2021, 4 p.m. N/A N/A N/A 2.0 ppb (2) N/A N/A 36.0 ppb (34) N/A N/A 6.0 μg/m3 (25) 34.0
 
Feb. 26, 2021, 3 p.m. N/A N/A N/A 3.0 ppb (3) N/A N/A 34.0 ppb (32) N/A N/A 3.0 μg/m3 (13) 32.0
 
Feb. 26, 2021, 2 p.m. N/A 80.0 ppb (79) 79.2 ppb (78) 4.0 ppb (4) N/A N/A 35.0 ppb (33) N/A N/A 4.0 μg/m3 (17) 79.0
 
Feb. 26, 2021, 1 p.m. N/A 8.1 ppb (8) 13.1 ppb (13) 5.0 ppb (5) N/A N/A 30.0 ppb (28) N/A N/A 5.0 μg/m3 (21) 28.0
 
Feb. 26, 2021, noon N/A 2.1 ppb (2) 9.5 ppb (9) 6.0 ppb (6) N/A N/A 27.0 ppb (25) N/A N/A 5.0 μg/m3 (21) 25.0
 
Feb. 26, 2021, 11 a.m. N/A 0.4 ppb (1) 9.4 ppb (9) 7.0 ppb (7) N/A N/A 25.0 ppb (24) N/A N/A 2.0 μg/m3 (9) 24.0
 
Feb. 26, 2021, 10 a.m. N/A 0.0 ppb (0) 7.0 ppb (7) 5.0 ppb (5) N/A N/A 29.0 ppb (27) N/A N/A 2.0 μg/m3 (9) 27.0
 
Feb. 26, 2021, 9 a.m. N/A 0.0 ppb (0) 6.0 ppb (6) 5.0 ppb (5) N/A N/A 31.0 ppb (29) N/A N/A 2.0 μg/m3 (9) 29.0
 
Feb. 26, 2021, 8 a.m. N/A 0.0 ppb (0) 3.6 ppb (4) 3.0 ppb (3) N/A N/A 34.0 ppb (32) N/A N/A 1.0 μg/m3 (5) 32.0
 
Feb. 26, 2021, 7 a.m. N/A 0.0 ppb (0) 3.2 ppb (4) 2.0 ppb (2) N/A N/A 35.0 ppb (33) N/A N/A 3.0 μg/m3 (13) 33.0
 
Feb. 26, 2021, 6 a.m. N/A 0.0 ppb (0) 3.2 ppb (4) 2.0 ppb (2) N/A N/A 35.0 ppb (33) N/A N/A 2.0 μg/m3 (9) 33.0
 
Feb. 26, 2021, 5 a.m. N/A 0.0 ppb (0) 4.7 ppb (5) 4.0 ppb (4) N/A N/A 34.0 ppb (32) N/A N/A 0.0 μg/m3 (0) 32.0
 
Feb. 26, 2021, 4 a.m. N/A 0.0 ppb (0) 3.9 ppb (4) 3.0 ppb (3) N/A N/A 35.0 ppb (33) N/A N/A -1.0 μg/m3 (0) 33.0
 
Feb. 26, 2021, 3 a.m. N/A 0.0 ppb (0) 2.9 ppb (3) 2.0 ppb (2) N/A N/A 38.0 ppb (36) N/A N/A 1.0 μg/m3 (5) 36.0
 
Feb. 26, 2021, 2 a.m. N/A 0.0 ppb (0) 2.7 ppb (3) 2.0 ppb (2) N/A N/A 39.0 ppb (37) N/A N/A 3.0 μg/m3 (13) 37.0
 
Feb. 26, 2021, 1 a.m. N/A 0.0 ppb (0) 2.7 ppb (3) 2.0 ppb (2) N/A N/A 40.0 ppb (38) N/A N/A 3.0 μg/m3 (13) 38.0
 
Feb. 26, 2021, midnight N/A 0.0 ppb (0) 2.5 ppb (3) 2.0 ppb (2) N/A N/A 41.0 ppb (38) N/A N/A 1.0 μg/m3 (5) 38.0
 
Feb. 25, 2021, 11 p.m. N/A 0.1 ppb (1) 3.0 ppb (3) 2.0 ppb (2) N/A N/A 42.0 ppb (39) N/A N/A -1.0 μg/m3 (0) 39.0
 
Feb. 25, 2021, 10 p.m. N/A 0.0 ppb (0) 2.0 ppb (2) 1.0 ppb (1) N/A N/A 43.0 ppb (40) N/A N/A -1.0 μg/m3 (0) 40.0
 
Feb. 25, 2021, 9 p.m. N/A N/A N/A 1.0 ppb (1) N/A N/A 43.0 ppb (40) N/A N/A 2.0 μg/m3 (9) 40.0
 
Feb. 25, 2021, 8 p.m. N/A N/A N/A 1.0 ppb (1) N/A N/A 43.0 ppb (40) N/A N/A 2.0 μg/m3 (9) 40.0
 
Feb. 25, 2021, 7 p.m. N/A 0.2 ppb (1) 1.4 ppb (2) 1.0 ppb (1) N/A N/A N/A N/A N/A 2.0 μg/m3 (9) 9.0
 
Feb. 25, 2021, 6 p.m. N/A N/A N/A 1.0 ppb (1) N/A N/A 44.0 ppb (41) N/A N/A 1.0 μg/m3 (5) 41.0
 
Feb. 25, 2021, 5 p.m. N/A 0.2 ppb (1) 1.4 ppb (2) 1.0 ppb (1) N/A N/A 43.0 ppb (40) N/A N/A 2.0 μg/m3 (9) 40.0
 
Feb. 25, 2021, 4 p.m. N/A 0.2 ppb (1) 1.3 ppb (2) 1.0 ppb (1) N/A N/A 43.0 ppb (40) N/A N/A 4.0 μg/m3 (17) 40.0
 
Feb. 25, 2021, 3 p.m. N/A 0.2 ppb (1) 1.4 ppb (2) 1.0 ppb (1) N/A N/A 42.0 ppb (39) N/A N/A 4.0 μg/m3 (17) 39.0
 
Feb. 25, 2021, 2 p.m. N/A 0.2 ppb (1) 1.3 ppb (2) 1.0 ppb (1) N/A N/A 42.0 ppb (39) N/A N/A 3.0 μg/m3 (13) 39.0
 
Feb. 25, 2021, 1 p.m. N/A 0.2 ppb (1) 1.8 ppb (2) 1.0 ppb (1) N/A N/A 39.0 ppb (37) N/A N/A 4.0 μg/m3 (17) 37.0
 
Feb. 25, 2021, noon N/A 0.2 ppb (1) 3.2 ppb (4) 2.0 ppb (2) N/A N/A 36.0 ppb (34) N/A N/A 5.0 μg/m3 (21) 34.0
 
Feb. 25, 2021, 11 a.m. N/A 0.0 ppb (0) 3.1 ppb (3) 2.0 ppb (2) N/A N/A 36.0 ppb (34) N/A N/A 7.0 μg/m3 (30) 34.0
 
Feb. 25, 2021, 10 a.m. N/A 0.1 ppb (1) 2.9 ppb (3) 2.0 ppb (2) N/A N/A 40.0 ppb (38) N/A N/A 6.0 μg/m3 (25) 38.0
 
Feb. 25, 2021, 9 a.m. N/A 0.0 ppb (0) 3.2 ppb (4) 1.0 ppb (1) N/A N/A 44.0 ppb (41) N/A N/A 6.0 μg/m3 (25) 41.0
 
Feb. 25, 2021, 8 a.m. N/A 0.0 ppb (0) 4.9 ppb (5) 2.0 ppb (2) N/A N/A N/A N/A N/A 9.0 μg/m3 (38) 38.0
 
Feb. 25, 2021, 7 a.m. N/A 0.0 ppb (0) 5.5 ppb (6) 3.0 ppb (3) N/A N/A 42.0 ppb (39) N/A N/A 4.0 μg/m3 (17) 39.0
 
Feb. 25, 2021, 6 a.m. N/A 0.1 ppb (1) 5.3 ppb (5) N/A N/A N/A 43.0 ppb (40) N/A N/A 4.0 μg/m3 (17) 40.0
 
Feb. 25, 2021, 5 a.m. N/A 0.1 ppb (1) 5.2 ppb (5) N/A N/A N/A 44.0 ppb (41) N/A N/A 4.0 μg/m3 (17) 41.0
 
Feb. 25, 2021, 4 a.m. N/A 0.1 ppb (1) 5.0 ppb (5) 3.0 ppb (3) N/A N/A 45.0 ppb (42) N/A N/A 3.0 μg/m3 (13) 42.0
 
Feb. 25, 2021, 3 a.m. N/A 0.0 ppb (0) 4.9 ppb (5) 3.0 ppb (3) N/A N/A 45.0 ppb (42) N/A N/A 2.0 μg/m3 (9) 42.0
 
Feb. 25, 2021, 2 a.m. N/A 0.1 ppb (1) 4.6 ppb (5) 3.0 ppb (3) N/A N/A 44.0 ppb (41) N/A N/A 3.0 μg/m3 (13) 41.0
 
Feb. 25, 2021, 1 a.m. N/A 0.1 ppb (1) 6.0 ppb (6) 4.0 ppb (4) N/A N/A 42.0 ppb (39) N/A N/A 3.0 μg/m3 (13) 39.0
 
Feb. 25, 2021, midnight N/A N/A N/A 6.0 ppb (6) N/A N/A 41.0 ppb (38) N/A N/A 5.0 μg/m3 (21) 38.0
 
Feb. 24, 2021, 11 p.m. N/A N/A N/A 10.0 ppb (10) N/A N/A 35.0 ppb (33) N/A N/A 6.0 μg/m3 (25) 33.0
 
Feb. 24, 2021, 10 p.m. N/A N/A N/A 10.0 ppb (10) N/A N/A 36.0 ppb (34) N/A N/A 4.0 μg/m3 (17) 34.0
 
Feb. 24, 2021, 9 p.m. N/A 0.4 ppb (1) 5.7 ppb (6) 4.0 ppb (4) N/A N/A 42.0 ppb (39) N/A N/A 7.0 μg/m3 (30) 39.0
 
Feb. 24, 2021, 8 p.m. N/A 0.7 ppb (1) 5.5 ppb (6) 3.0 ppb (3) N/A N/A 44.0 ppb (41) N/A N/A 6.0 μg/m3 (25) 41.0
 
Feb. 24, 2021, 7 p.m. N/A 0.8 ppb (1) 5.5 ppb (6) 3.0 ppb (3) N/A N/A 44.0 ppb (41) N/A N/A 4.0 μg/m3 (17) 41.0
 
Feb. 24, 2021, 6 p.m. N/A 0.6 ppb (1) 4.0 ppb (4) 2.0 ppb (2) N/A N/A 45.0 ppb (42) N/A N/A 4.0 μg/m3 (17) 42.0
 
Feb. 24, 2021, 5 p.m. N/A 0.5 ppb (1) 2.9 ppb (3) 1.0 ppb (1) N/A N/A 43.0 ppb (40) N/A N/A 5.0 μg/m3 (21) 40.0
 
Feb. 24, 2021, 4 p.m. N/A 0.6 ppb (1) 3.2 ppb (4) 1.0 ppb (1) N/A N/A 42.0 ppb (39) N/A N/A 7.0 μg/m3 (30) 39.0
 
Feb. 24, 2021, 3 p.m. N/A 0.7 ppb (1) 3.3 ppb (4) 2.0 ppb (2) N/A N/A 40.0 ppb (38) N/A N/A 6.0 μg/m3 (25) 38.0
 
Feb. 24, 2021, 2 p.m. N/A 0.8 ppb (1) 3.7 ppb (4) 2.0 ppb (2) N/A N/A 38.0 ppb (36) N/A N/A 6.0 μg/m3 (25) 36.0
 
Feb. 24, 2021, 1 p.m. N/A 1.3 ppb (2) 6.1 ppb (6) 4.0 ppb (4) N/A N/A 35.0 ppb (33) N/A N/A 9.0 μg/m3 (38) 38.0
 
Feb. 24, 2021, noon N/A 1.5 ppb (2) 11.4 ppb (11) 8.0 ppb (8) N/A N/A 29.0 ppb (27) N/A N/A 6.0 μg/m3 (25) 27.0
 
Feb. 24, 2021, 11 a.m. N/A 0.3 ppb (1) 9.8 ppb (10) 8.0 ppb (8) N/A N/A 28.0 ppb (26) N/A N/A 6.0 μg/m3 (25) 26.0
 
Feb. 24, 2021, 10 a.m. N/A 0.2 ppb (1) 11.2 ppb (11) 9.0 ppb (9) N/A N/A 27.0 ppb (25) N/A N/A 5.0 μg/m3 (21) 25.0
 
Feb. 24, 2021, 9 a.m. N/A 0.1 ppb (1) 7.3 ppb (7) 6.0 ppb (6) N/A N/A 30.0 ppb (28) N/A N/A 6.0 μg/m3 (25) 28.0
 
Feb. 24, 2021, 8 a.m. N/A 0.0 ppb (0) 5.7 ppb (6) 4.0 ppb (4) N/A N/A 33.0 ppb (31) N/A N/A 6.0 μg/m3 (25) 31.0
 
Feb. 24, 2021, 7 a.m. N/A 0.0 ppb (0) 6.2 ppb (6) 4.0 ppb (4) N/A N/A 34.0 ppb (32) N/A N/A 5.0 μg/m3 (21) 32.0
 
Feb. 24, 2021, 6 a.m. N/A 0.0 ppb (0) 4.6 ppb (5) 3.0 ppb (3) N/A N/A 36.0 ppb (34) N/A N/A 2.0 μg/m3 (9) 34.0
 
Feb. 24, 2021, 5 a.m. N/A 0.0 ppb (0) 4.4 ppb (5) 3.0 ppb (3) N/A N/A 37.0 ppb (35) N/A N/A 5.0 μg/m3 (21) 35.0
 
Feb. 24, 2021, 4 a.m. N/A 0.0 ppb (0) 5.5 ppb (6) 3.0 ppb (3) N/A N/A 36.0 ppb (34) N/A N/A 9.0 μg/m3 (38) 38.0
 
Feb. 24, 2021, 3 a.m. N/A 0.0 ppb (0) 5.8 ppb (6) 4.0 ppb (4) N/A N/A 37.0 ppb (35) N/A N/A 7.0 μg/m3 (30) 35.0
 
Feb. 24, 2021, 2 a.m. N/A 0.0 ppb (0) 6.5 ppb (7) 4.0 ppb (4) N/A N/A 38.0 ppb (36) N/A N/A 8.0 μg/m3 (34) 36.0
 
Feb. 24, 2021, 1 a.m. N/A 0.1 ppb (1) 6.8 ppb (7) 4.0 ppb (4) N/A N/A 39.0 ppb (37) N/A N/A 4.0 μg/m3 (17) 37.0
 
Feb. 24, 2021, midnight N/A 0.1 ppb (1) 7.8 ppb (8) 5.0 ppb (5) N/A N/A 40.0 ppb (38) N/A N/A 7.0 μg/m3 (30) 38.0
 
Feb. 23, 2021, 11 p.m. N/A 0.1 ppb (1) 7.6 ppb (8) 5.0 ppb (5) N/A N/A 42.0 ppb (39) N/A N/A 10.0 μg/m3 (42) 42.0
 
Feb. 23, 2021, 10 p.m. N/A 0.2 ppb (1) 7.5 ppb (8) 5.0 ppb (5) N/A N/A 43.0 ppb (40) N/A N/A N/A 40.0
 
Feb. 23, 2021, 9 p.m. N/A 0.3 ppb (1) 6.3 ppb (6) 4.0 ppb (4) N/A N/A 45.0 ppb (42) N/A N/A N/A 42.0
 
Feb. 23, 2021, 8 p.m. N/A 0.4 ppb (1) 5.8 ppb (6) 3.0 ppb (3) N/A N/A 47.0 ppb (44) N/A N/A N/A 44.0
 
Feb. 23, 2021, 7 p.m. N/A 0.9 ppb (1) 6.9 ppb (7) 3.0 ppb (3) N/A N/A 47.0 ppb (44) N/A N/A 11.0 μg/m3 (46) 46.0
 
Feb. 23, 2021, 6 p.m. N/A 0.7 ppb (1) 6.1 ppb (6) 3.0 ppb (3) N/A N/A 48.0 ppb (45) N/A N/A 12.0 μg/m3 (50) 50.0
 
Feb. 23, 2021, 5 p.m. N/A N/A N/A 2.0 ppb (2) N/A N/A 47.0 ppb (44) N/A N/A 13.0 μg/m3 (53) 53.0
 
Feb. 23, 2021, 4 p.m. N/A 0.6 ppb (1) 4.8 ppb (5) 2.0 ppb (2) N/A N/A 48.0 ppb (45) N/A N/A 9.0 μg/m3 (38) 45.0
 
Feb. 23, 2021, 3 p.m. N/A 1.1 ppb (2) 6.0 ppb (6) 3.0 ppb (3) N/A N/A 45.0 ppb (42) N/A N/A 10.0 μg/m3 (42) 42.0
 
Feb. 23, 2021, 2 p.m. N/A 2.6 ppb (3) 12.3 ppb (12) 7.0 ppb (7) N/A N/A 34.0 ppb (32) N/A N/A 10.0 μg/m3 (42) 42.0
 
Feb. 23, 2021, 1 p.m. N/A 2.9 ppb (3) 15.9 ppb (15) 10.0 ppb (10) N/A N/A 29.0 ppb (27) N/A N/A 10.0 μg/m3 (42) 42.0
 
Feb. 23, 2021, noon N/A 2.1 ppb (2) 19.9 ppb (19) 14.0 ppb (14) N/A N/A 23.0 ppb (22) N/A N/A 7.0 μg/m3 (30) 30.0
 
Feb. 23, 2021, 11 a.m. N/A 0.3 ppb (1) 13.9 ppb (14) 11.0 ppb (11) N/A N/A 25.0 ppb (24) N/A N/A 7.0 μg/m3 (30) 30.0
 
Feb. 23, 2021, 10 a.m. N/A 0.1 ppb (1) 10.2 ppb (10) 8.0 ppb (8) N/A N/A 28.0 ppb (26) N/A N/A 5.0 μg/m3 (21) 26.0
 
Feb. 23, 2021, 9 a.m. N/A 0.1 ppb (1) 8.2 ppb (8) 6.0 ppb (6) N/A N/A 29.0 ppb (27) N/A N/A 1.0 μg/m3 (5) 27.0
 
Feb. 23, 2021, 8 a.m. N/A 0.1 ppb (1) 6.8 ppb (7) 5.0 ppb (5) N/A N/A 31.0 ppb (29) N/A N/A 3.0 μg/m3 (13) 29.0
 
Feb. 23, 2021, 7 a.m. N/A 0.1 ppb (1) 5.7 ppb (6) 4.0 ppb (4) N/A N/A 34.0 ppb (32) N/A N/A 5.0 μg/m3 (21) 32.0
 
Feb. 23, 2021, 6 a.m. N/A 0.0 ppb (0) 4.3 ppb (5) 3.0 ppb (3) N/A N/A 35.0 ppb (33) N/A N/A 3.0 μg/m3 (13) 33.0
 
Feb. 23, 2021, 5 a.m. N/A 0.1 ppb (1) 4.8 ppb (5) 4.0 ppb (4) N/A N/A 34.0 ppb (32) N/A N/A 2.0 μg/m3 (9) 32.0
 
Feb. 23, 2021, 4 a.m. N/A 0.0 ppb (0) 5.4 ppb (6) 4.0 ppb (4) N/A N/A 33.0 ppb (31) N/A N/A 3.0 μg/m3 (13) 31.0
 
Feb. 23, 2021, 3 a.m. N/A 0.1 ppb (1) 5.3 ppb (5) 4.0 ppb (4) N/A N/A 35.0 ppb (33) N/A N/A 4.0 μg/m3 (17) 33.0
 
Feb. 23, 2021, 2 a.m. N/A 0.1 ppb (1) 6.0 ppb (6) 5.0 ppb (5) N/A N/A 36.0 ppb (34) N/A N/A 6.0 μg/m3 (25) 34.0
 
Feb. 23, 2021, 1 a.m. N/A 0.1 ppb (1) 9.1 ppb (9) 8.0 ppb (8) N/A N/A 34.0 ppb (32) N/A N/A 4.0 μg/m3 (17) 32.0
 
Feb. 23, 2021, midnight N/A 0.1 ppb (1) 7.8 ppb (8) 7.0 ppb (7) N/A N/A 35.0 ppb (33) N/A N/A 1.0 μg/m3 (5) 33.0
 
Feb. 22, 2021, 11 p.m. N/A 0.2 ppb (1) 7.0 ppb (7) 6.0 ppb (6) N/A N/A 36.0 ppb (34) N/A N/A 1.0 μg/m3 (5) 34.0
 
Feb. 22, 2021, 10 p.m. N/A 0.2 ppb (1) 8.2 ppb (8) 7.0 ppb (7) N/A N/A 35.0 ppb (33) N/A N/A 4.0 μg/m3 (17) 33.0
 
Feb. 22, 2021, 9 p.m. N/A 0.3 ppb (1) 6.7 ppb (7) 5.0 ppb (5) N/A N/A 36.0 ppb (34) N/A N/A 7.0 μg/m3 (30) 34.0
 
Feb. 22, 2021, 8 p.m. N/A 0.6 ppb (1) 8.6 ppb (9) 6.0 ppb (6) N/A N/A 37.0 ppb (35) N/A N/A 9.0 μg/m3 (38) 38.0
 
Feb. 22, 2021, 7 p.m. N/A 0.7 ppb (1) 7.8 ppb (8) 5.0 ppb (5) N/A N/A 40.0 ppb (38) N/A N/A 9.0 μg/m3 (38) 38.0
 
Feb. 22, 2021, 6 p.m. N/A 2.2 ppb (3) 13.3 ppb (13) 9.0 ppb (9) N/A N/A 38.0 ppb (36) N/A N/A 10.0 μg/m3 (42) 42.0
 
Feb. 22, 2021, 5 p.m. N/A 3.0 ppb (3) 13.1 ppb (13) 7.0 ppb (7) N/A N/A 39.0 ppb (37) N/A N/A 11.0 μg/m3 (46) 46.0
 
Feb. 22, 2021, 4 p.m. N/A 2.8 ppb (3) 12.1 ppb (12) 7.0 ppb (7) N/A N/A 35.0 ppb (33) N/A N/A 12.0 μg/m3 (50) 50.0
 
Feb. 22, 2021, 3 p.m. N/A 4.1 ppb (4) 15.5 ppb (15) 9.0 ppb (9) N/A N/A 30.0 ppb (28) N/A N/A 15.0 μg/m3 (58) 58.0
 
Feb. 22, 2021, 2 p.m. N/A 4.3 ppb (5) 21.3 ppb (21) 15.0 ppb (15) N/A N/A 20.0 ppb (19) N/A N/A 11.0 μg/m3 (46) 46.0